net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  */
   7
   8 #include <linux/if.h>
   9 #include <linux/module.h>
  10 #include <linux/err.h>
  11 #include <linux/slab.h>
  12 #include <linux/list.h>
  13 #include <linux/if_ether.h>
  14 #include <linux/ieee80211.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/rtnetlink.h>
  17 #include <linux/netlink.h>
  18 #include <linux/etherdevice.h>
  19 #include <net/net_namespace.h>
  20 #include <net/genetlink.h>
  21 #include <net/cfg80211.h>
  22 #include <net/sock.h>
  23 #include <net/inet_connection_sock.h>
  24 #include "core.h"
  25 #include "nl80211.h"
  26 #include "reg.h"
  27 #include "rdev-ops.h"
  28
  29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  30                                    struct genl_info *info,
  31                                    struct cfg80211_crypto_settings *settings,
  32                                    int cipher_limit);
  33
  34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  35                             struct genl_info *info);
  36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  37                               struct genl_info *info);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam = {
  41         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  42         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  43         .hdrsize = 0,                   /* no private header */
  44         .version = 1,                   /* no particular meaning now */
  45         .maxattr = NL80211_ATTR_MAX,
  46         .netnsok = true,
  47         .pre_doit = nl80211_pre_doit,
  48         .post_doit = nl80211_post_doit,
  49 };
  50
  51 /* multicast groups */
  52 enum nl80211_multicast_groups {
  53         NL80211_MCGRP_CONFIG,
  54         NL80211_MCGRP_SCAN,
  55         NL80211_MCGRP_REGULATORY,
  56         NL80211_MCGRP_MLME,
  57         NL80211_MCGRP_VENDOR,
  58         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  59 };
  60
  61 static const struct genl_multicast_group nl80211_mcgrps[] = {
  62         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  63         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  64         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  65         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  66         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  69 #endif
  70 };
  71
  72 /* returns ERR_PTR values */
  73 static struct wireless_dev *
  74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  75 {
  76         struct cfg80211_registered_device *rdev;
  77         struct wireless_dev *result = NULL;
  78         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  79         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  80         u64 wdev_id;
  81         int wiphy_idx = -1;
  82         int ifidx = -1;
  83
  84         ASSERT_RTNL();
  85
  86         if (!have_ifidx && !have_wdev_id)
  87                 return ERR_PTR(-EINVAL);
  88
  89         if (have_ifidx)
  90                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  91         if (have_wdev_id) {
  92                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  93                 wiphy_idx = wdev_id >> 32;
  94         }
  95
  96         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  97                 struct wireless_dev *wdev;
  98
  99                 if (wiphy_net(&rdev->wiphy) != netns)
 100                         continue;
 101
 102                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 103                         continue;
 104
 105                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 106                         if (have_ifidx && wdev->netdev &&
 107                             wdev->netdev->ifindex == ifidx) {
 108                                 result = wdev;
 109                                 break;
 110                         }
 111                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 112                                 result = wdev;
 113                                 break;
 114                         }
 115                 }
 116
 117                 if (result)
 118                         break;
 119         }
 120
 121         if (result)
 122                 return result;
 123         return ERR_PTR(-ENODEV);
 124 }
 125
 126 static struct cfg80211_registered_device *
 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 128 {
 129         struct cfg80211_registered_device *rdev = NULL, *tmp;
 130         struct net_device *netdev;
 131
 132         ASSERT_RTNL();
 133
 134         if (!attrs[NL80211_ATTR_WIPHY] &&
 135             !attrs[NL80211_ATTR_IFINDEX] &&
 136             !attrs[NL80211_ATTR_WDEV])
 137                 return ERR_PTR(-EINVAL);
 138
 139         if (attrs[NL80211_ATTR_WIPHY])
 140                 rdev = cfg80211_rdev_by_wiphy_idx(
 141                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 142
 143         if (attrs[NL80211_ATTR_WDEV]) {
 144                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 145                 struct wireless_dev *wdev;
 146                 bool found = false;
 147
 148                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 149                 if (tmp) {
 150                         /* make sure wdev exists */
 151                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 152                                 if (wdev->identifier != (u32)wdev_id)
 153                                         continue;
 154                                 found = true;
 155                                 break;
 156                         }
 157
 158                         if (!found)
 159                                 tmp = NULL;
 160
 161                         if (rdev && tmp != rdev)
 162                                 return ERR_PTR(-EINVAL);
 163                         rdev = tmp;
 164                 }
 165         }
 166
 167         if (attrs[NL80211_ATTR_IFINDEX]) {
 168                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 169                 netdev = __dev_get_by_index(netns, ifindex);
 170                 if (netdev) {
 171                         if (netdev->ieee80211_ptr)
 172                                 tmp = wiphy_to_rdev(
 173                                         netdev->ieee80211_ptr->wiphy);
 174                         else
 175                                 tmp = NULL;
 176
 177                         /* not wireless device -- return error */
 178                         if (!tmp)
 179                                 return ERR_PTR(-EINVAL);
 180
 181                         /* mismatch -- return error */
 182                         if (rdev && tmp != rdev)
 183                                 return ERR_PTR(-EINVAL);
 184
 185                         rdev = tmp;
 186                 }
 187         }
 188
 189         if (!rdev)
 190                 return ERR_PTR(-ENODEV);
 191
 192         if (netns != wiphy_net(&rdev->wiphy))
 193                 return ERR_PTR(-ENODEV);
 194
 195         return rdev;
 196 }
 197
 198 /*
 199  * This function returns a pointer to the driver
 200  * that the genl_info item that is passed refers to.
 201  *
 202  * The result of this can be a PTR_ERR and hence must
 203  * be checked with IS_ERR() for errors.
 204  */
 205 static struct cfg80211_registered_device *
 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 207 {
 208         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 209 }
 210
 211 /* policy for the attributes */
 212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 213         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 214         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 215                                       .len = 20-1 },
 216         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 217
 218         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 223
 224         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 226         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 229         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 230
 231         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 232         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 233         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 234
 235         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 236         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 237
 238         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 239         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 240                                     .len = WLAN_MAX_KEY_LEN },
 241         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 242         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 243         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 244         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 245         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 246
 247         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 248         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 249         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 257                                                .len = NL80211_MAX_SUPP_RATES },
 258         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 259         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 260         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 261         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 262                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 263         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 264
 265         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 266         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 267
 268         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 270         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 272                                            .len = NL80211_MAX_SUPP_RATES },
 273         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 274
 275         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 277
 278         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 279
 280         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 281         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 282                               .len = IEEE80211_MAX_DATA_LEN },
 283         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 284         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 285
 286         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 287                                 .len = IEEE80211_MAX_SSID_LEN },
 288         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 289         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 293         [NL80211_ATTR_STA_FLAGS2] = {
 294                 .len = sizeof(struct nl80211_sta_flag_update),
 295         },
 296         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 300         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 302         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 303         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 304         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 305                                  .len = WLAN_PMKID_LEN },
 306         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 307         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 308         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 309         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 310                                  .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 312         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 313         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 317         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 318         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 319         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 320         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 322         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 323         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 324         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 326         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 327         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 329         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 330         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 336         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 339         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 342         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 345                                       .len = IEEE80211_MAX_DATA_LEN },
 346         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 347         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 348         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 349                 .len = NL80211_HT_CAPABILITY_LEN
 350         },
 351         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 352         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 353         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 354         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 355         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 356         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 357         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 358         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 359         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 360         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 361         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 362         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 363         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 364         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 365         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 366         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 368                 .len = NL80211_VHT_CAPABILITY_LEN,
 369         },
 370         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 372                                   .len = IEEE80211_MAX_DATA_LEN },
 373         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 374         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 375         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 376         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 377         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 383         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 384         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 385         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 387                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 388         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 390         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 392         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 393         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 395         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 396         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 397         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 398         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 399         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 400         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 401         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 402 };
 403
 404 /* policy for the key attributes */
 405 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 406         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 407         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 408         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 409         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 410         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 411         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 412         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 413         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 414 };
 415
 416 /* policy for the key default flags */
 417 static const struct nla_policy
 418 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 419         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 420         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 421 };
 422
 423 /* policy for WoWLAN attributes */
 424 static const struct nla_policy
 425 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 426         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 427         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 428         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 430         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 433         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 434         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 435         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 436 };
 437
 438 static const struct nla_policy
 439 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 440         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 441         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 442         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 443         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 444         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 445         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 446         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 447                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 448         },
 449         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 450                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 451         },
 452         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 453         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 454         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 455 };
 456
 457 /* policy for coalesce rule attributes */
 458 static const struct nla_policy
 459 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 460         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 461         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 462         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 463 };
 464
 465 /* policy for GTK rekey offload attributes */
 466 static const struct nla_policy
 467 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 468         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 469         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 470         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 471 };
 472
 473 static const struct nla_policy
 474 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 475         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 476                                                  .len = IEEE80211_MAX_SSID_LEN },
 477         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 478 };
 479
 480 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 481                                      struct netlink_callback *cb,
 482                                      struct cfg80211_registered_device **rdev,
 483                                      struct wireless_dev **wdev)
 484 {
 485         int err;
 486
 487         rtnl_lock();
 488
 489         if (!cb->args[0]) {
 490                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 491                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 492                                   nl80211_policy);
 493                 if (err)
 494                         goto out_unlock;
 495
 496                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 497                                                    nl80211_fam.attrbuf);
 498                 if (IS_ERR(*wdev)) {
 499                         err = PTR_ERR(*wdev);
 500                         goto out_unlock;
 501                 }
 502                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 503                 /* 0 is the first index - add 1 to parse only once */
 504                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 505                 cb->args[1] = (*wdev)->identifier;
 506         } else {
 507                 /* subtract the 1 again here */
 508                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 509                 struct wireless_dev *tmp;
 510
 511                 if (!wiphy) {
 512                         err = -ENODEV;
 513                         goto out_unlock;
 514                 }
 515                 *rdev = wiphy_to_rdev(wiphy);
 516                 *wdev = NULL;
 517
 518                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 519                         if (tmp->identifier == cb->args[1]) {
 520                                 *wdev = tmp;
 521                                 break;
 522                         }
 523                 }
 524
 525                 if (!*wdev) {
 526                         err = -ENODEV;
 527                         goto out_unlock;
 528                 }
 529         }
 530
 531         return 0;
 532  out_unlock:
 533         rtnl_unlock();
 534         return err;
 535 }
 536
 537 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 538 {
 539         rtnl_unlock();
 540 }
 541
 542 /* IE validation */
 543 static bool is_valid_ie_attr(const struct nlattr *attr)
 544 {
 545         const u8 *pos;
 546         int len;
 547
 548         if (!attr)
 549                 return true;
 550
 551         pos = nla_data(attr);
 552         len = nla_len(attr);
 553
 554         while (len) {
 555                 u8 elemlen;
 556
 557                 if (len < 2)
 558                         return false;
 559                 len -= 2;
 560
 561                 elemlen = pos[1];
 562                 if (elemlen > len)
 563                         return false;
 564
 565                 len -= elemlen;
 566                 pos += 2 + elemlen;
 567         }
 568
 569         return true;
 570 }
 571
 572 /* message building helper */
 573 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 574                                    int flags, u8 cmd)
 575 {
 576         /* since there is no private header just add the generic one */
 577         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 578 }
 579
 580 static int nl80211_msg_put_channel(struct sk_buff *msg,
 581                                    struct ieee80211_channel *chan,
 582                                    bool large)
 583 {
 584         /* Some channels must be completely excluded from the
 585          * list to protect old user-space tools from breaking
 586          */
 587         if (!large && chan->flags &
 588             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 589                 return 0;
 590
 591         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 592                         chan->center_freq))
 593                 goto nla_put_failure;
 594
 595         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 596             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 597                 goto nla_put_failure;
 598         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 599                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 600                         goto nla_put_failure;
 601                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 602                         goto nla_put_failure;
 603         }
 604         if (chan->flags & IEEE80211_CHAN_RADAR) {
 605                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 606                         goto nla_put_failure;
 607                 if (large) {
 608                         u32 time;
 609
 610                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 611
 612                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 613                                         chan->dfs_state))
 614                                 goto nla_put_failure;
 615                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 616                                         time))
 617                                 goto nla_put_failure;
 618                         if (nla_put_u32(msg,
 619                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 620                                         chan->dfs_cac_ms))
 621                                 goto nla_put_failure;
 622                 }
 623         }
 624
 625         if (large) {
 626                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 627                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 628                         goto nla_put_failure;
 629                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 630                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 631                         goto nla_put_failure;
 632                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 633                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 634                         goto nla_put_failure;
 635                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 636                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 637                         goto nla_put_failure;
 638                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 639                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 640                         goto nla_put_failure;
 641                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 642                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 643                         goto nla_put_failure;
 644                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 645                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 646                         goto nla_put_failure;
 647                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 648                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 649                         goto nla_put_failure;
 650         }
 651
 652         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 653                         DBM_TO_MBM(chan->max_power)))
 654                 goto nla_put_failure;
 655
 656         return 0;
 657
 658  nla_put_failure:
 659         return -ENOBUFS;
 660 }
 661
 662 /* netlink command implementations */
 663
 664 struct key_parse {
 665         struct key_params p;
 666         int idx;
 667         int type;
 668         bool def, defmgmt;
 669         bool def_uni, def_multi;
 670 };
 671
 672 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 673 {
 674         struct nlattr *tb[NL80211_KEY_MAX + 1];
 675         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 676                                    nl80211_key_policy);
 677         if (err)
 678                 return err;
 679
 680         k->def = !!tb[NL80211_KEY_DEFAULT];
 681         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 682
 683         if (k->def) {
 684                 k->def_uni = true;
 685                 k->def_multi = true;
 686         }
 687         if (k->defmgmt)
 688                 k->def_multi = true;
 689
 690         if (tb[NL80211_KEY_IDX])
 691                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 692
 693         if (tb[NL80211_KEY_DATA]) {
 694                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 695                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 696         }
 697
 698         if (tb[NL80211_KEY_SEQ]) {
 699                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 700                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 701         }
 702
 703         if (tb[NL80211_KEY_CIPHER])
 704                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 705
 706         if (tb[NL80211_KEY_TYPE]) {
 707                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 708                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 709                         return -EINVAL;
 710         }
 711
 712         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 713                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 714                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 715                                        tb[NL80211_KEY_DEFAULT_TYPES],
 716                                        nl80211_key_default_policy);
 717                 if (err)
 718                         return err;
 719
 720                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 721                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 722         }
 723
 724         return 0;
 725 }
 726
 727 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 728 {
 729         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 730                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 731                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 732         }
 733
 734         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 735                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 736                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 737         }
 738
 739         if (info->attrs[NL80211_ATTR_KEY_IDX])
 740                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 741
 742         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 743                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 744
 745         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 746         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 747
 748         if (k->def) {
 749                 k->def_uni = true;
 750                 k->def_multi = true;
 751         }
 752         if (k->defmgmt)
 753                 k->def_multi = true;
 754
 755         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 756                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 757                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 758                         return -EINVAL;
 759         }
 760
 761         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 762                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 763                 int err = nla_parse_nested(
 764                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 765                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 766                                 nl80211_key_default_policy);
 767                 if (err)
 768                         return err;
 769
 770                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 771                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 772         }
 773
 774         return 0;
 775 }
 776
 777 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 778 {
 779         int err;
 780
 781         memset(k, 0, sizeof(*k));
 782         k->idx = -1;
 783         k->type = -1;
 784
 785         if (info->attrs[NL80211_ATTR_KEY])
 786                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 787         else
 788                 err = nl80211_parse_key_old(info, k);
 789
 790         if (err)
 791                 return err;
 792
 793         if (k->def && k->defmgmt)
 794                 return -EINVAL;
 795
 796         if (k->defmgmt) {
 797                 if (k->def_uni || !k->def_multi)
 798                         return -EINVAL;
 799         }
 800
 801         if (k->idx != -1) {
 802                 if (k->defmgmt) {
 803                         if (k->idx < 4 || k->idx > 5)
 804                                 return -EINVAL;
 805                 } else if (k->def) {
 806                         if (k->idx < 0 || k->idx > 3)
 807                                 return -EINVAL;
 808                 } else {
 809                         if (k->idx < 0 || k->idx > 5)
 810                                 return -EINVAL;
 811                 }
 812         }
 813
 814         return 0;
 815 }
 816
 817 static struct cfg80211_cached_keys *
 818 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 819                        struct nlattr *keys, bool *no_ht)
 820 {
 821         struct key_parse parse;
 822         struct nlattr *key;
 823         struct cfg80211_cached_keys *result;
 824         int rem, err, def = 0;
 825
 826         result = kzalloc(sizeof(*result), GFP_KERNEL);
 827         if (!result)
 828                 return ERR_PTR(-ENOMEM);
 829
 830         result->def = -1;
 831         result->defmgmt = -1;
 832
 833         nla_for_each_nested(key, keys, rem) {
 834                 memset(&parse, 0, sizeof(parse));
 835                 parse.idx = -1;
 836
 837                 err = nl80211_parse_key_new(key, &parse);
 838                 if (err)
 839                         goto error;
 840                 err = -EINVAL;
 841                 if (!parse.p.key)
 842                         goto error;
 843                 if (parse.idx < 0 || parse.idx > 4)
 844                         goto error;
 845                 if (parse.def) {
 846                         if (def)
 847                                 goto error;
 848                         def = 1;
 849                         result->def = parse.idx;
 850                         if (!parse.def_uni || !parse.def_multi)
 851                                 goto error;
 852                 } else if (parse.defmgmt)
 853                         goto error;
 854                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 855                                                      parse.idx, false, NULL);
 856                 if (err)
 857                         goto error;
 858                 result->params[parse.idx].cipher = parse.p.cipher;
 859                 result->params[parse.idx].key_len = parse.p.key_len;
 860                 result->params[parse.idx].key = result->data[parse.idx];
 861                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 862
 863                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 864                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 865                         if (no_ht)
 866                                 *no_ht = true;
 867                 }
 868         }
 869
 870         return result;
 871  error:
 872         kfree(result);
 873         return ERR_PTR(err);
 874 }
 875
 876 static int nl80211_key_allowed(struct wireless_dev *wdev)
 877 {
 878         ASSERT_WDEV_LOCK(wdev);
 879
 880         switch (wdev->iftype) {
 881         case NL80211_IFTYPE_AP:
 882         case NL80211_IFTYPE_AP_VLAN:
 883         case NL80211_IFTYPE_P2P_GO:
 884         case NL80211_IFTYPE_MESH_POINT:
 885                 break;
 886         case NL80211_IFTYPE_ADHOC:
 887         case NL80211_IFTYPE_STATION:
 888         case NL80211_IFTYPE_P2P_CLIENT:
 889                 if (!wdev->current_bss)
 890                         return -ENOLINK;
 891                 break;
 892         case NL80211_IFTYPE_UNSPECIFIED:
 893         case NL80211_IFTYPE_OCB:
 894         case NL80211_IFTYPE_MONITOR:
 895         case NL80211_IFTYPE_P2P_DEVICE:
 896         case NL80211_IFTYPE_WDS:
 897         case NUM_NL80211_IFTYPES:
 898                 return -EINVAL;
 899         }
 900
 901         return 0;
 902 }
 903
 904 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 905                                                         struct nlattr *tb)
 906 {
 907         struct ieee80211_channel *chan;
 908
 909         if (tb == NULL)
 910                 return NULL;
 911         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 912         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 913                 return NULL;
 914         return chan;
 915 }
 916
 917 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 918 {
 919         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 920         int i;
 921
 922         if (!nl_modes)
 923                 goto nla_put_failure;
 924
 925         i = 0;
 926         while (ifmodes) {
 927                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 928                         goto nla_put_failure;
 929                 ifmodes >>= 1;
 930                 i++;
 931         }
 932
 933         nla_nest_end(msg, nl_modes);
 934         return 0;
 935
 936 nla_put_failure:
 937         return -ENOBUFS;
 938 }
 939
 940 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 941                                           struct sk_buff *msg,
 942                                           bool large)
 943 {
 944         struct nlattr *nl_combis;
 945         int i, j;
 946
 947         nl_combis = nla_nest_start(msg,
 948                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 949         if (!nl_combis)
 950                 goto nla_put_failure;
 951
 952         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 953                 const struct ieee80211_iface_combination *c;
 954                 struct nlattr *nl_combi, *nl_limits;
 955
 956                 c = &wiphy->iface_combinations[i];
 957
 958                 nl_combi = nla_nest_start(msg, i + 1);
 959                 if (!nl_combi)
 960                         goto nla_put_failure;
 961
 962                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 963                 if (!nl_limits)
 964                         goto nla_put_failure;
 965
 966                 for (j = 0; j < c->n_limits; j++) {
 967                         struct nlattr *nl_limit;
 968
 969                         nl_limit = nla_nest_start(msg, j + 1);
 970                         if (!nl_limit)
 971                                 goto nla_put_failure;
 972                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 973                                         c->limits[j].max))
 974                                 goto nla_put_failure;
 975                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 976                                                 c->limits[j].types))
 977                                 goto nla_put_failure;
 978                         nla_nest_end(msg, nl_limit);
 979                 }
 980
 981                 nla_nest_end(msg, nl_limits);
 982
 983                 if (c->beacon_int_infra_match &&
 984                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 985                         goto nla_put_failure;
 986                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 987                                 c->num_different_channels) ||
 988                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 989                                 c->max_interfaces))
 990                         goto nla_put_failure;
 991                 if (large &&
 992                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 993                                 c->radar_detect_widths) ||
 994                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 995                                 c->radar_detect_regions)))
 996                         goto nla_put_failure;
 997
 998                 nla_nest_end(msg, nl_combi);
 999         }
1000
1001         nla_nest_end(msg, nl_combis);
1002
1003         return 0;
1004 nla_put_failure:
1005         return -ENOBUFS;
1006 }
1007
1008 #ifdef CONFIG_PM
1009 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1010                                         struct sk_buff *msg)
1011 {
1012         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1013         struct nlattr *nl_tcp;
1014
1015         if (!tcp)
1016                 return 0;
1017
1018         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1019         if (!nl_tcp)
1020                 return -ENOBUFS;
1021
1022         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1023                         tcp->data_payload_max))
1024                 return -ENOBUFS;
1025
1026         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1027                         tcp->data_payload_max))
1028                 return -ENOBUFS;
1029
1030         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1031                 return -ENOBUFS;
1032
1033         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1034                                 sizeof(*tcp->tok), tcp->tok))
1035                 return -ENOBUFS;
1036
1037         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1038                         tcp->data_interval_max))
1039                 return -ENOBUFS;
1040
1041         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1042                         tcp->wake_payload_max))
1043                 return -ENOBUFS;
1044
1045         nla_nest_end(msg, nl_tcp);
1046         return 0;
1047 }
1048
1049 static int nl80211_send_wowlan(struct sk_buff *msg,
1050                                struct cfg80211_registered_device *rdev,
1051                                bool large)
1052 {
1053         struct nlattr *nl_wowlan;
1054
1055         if (!rdev->wiphy.wowlan)
1056                 return 0;
1057
1058         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1059         if (!nl_wowlan)
1060                 return -ENOBUFS;
1061
1062         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1063              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1064             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1065              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1066             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1067              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1068             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1069              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1070             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1071              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1072             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1073              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1074             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1075              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1076             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1077              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1078                 return -ENOBUFS;
1079
1080         if (rdev->wiphy.wowlan->n_patterns) {
1081                 struct nl80211_pattern_support pat = {
1082                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1083                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1084                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1085                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1086                 };
1087
1088                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1089                             sizeof(pat), &pat))
1090                         return -ENOBUFS;
1091         }
1092
1093         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1094             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1095                         rdev->wiphy.wowlan->max_nd_match_sets))
1096                 return -ENOBUFS;
1097
1098         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1099                 return -ENOBUFS;
1100
1101         /* TODO: send wowlan net detect */
1102
1103         nla_nest_end(msg, nl_wowlan);
1104
1105         return 0;
1106 }
1107 #endif
1108
1109 static int nl80211_send_coalesce(struct sk_buff *msg,
1110                                  struct cfg80211_registered_device *rdev)
1111 {
1112         struct nl80211_coalesce_rule_support rule;
1113
1114         if (!rdev->wiphy.coalesce)
1115                 return 0;
1116
1117         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1118         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1119         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1120         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1121         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1122         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1123
1124         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1125                 return -ENOBUFS;
1126
1127         return 0;
1128 }
1129
1130 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1131                                       struct ieee80211_supported_band *sband)
1132 {
1133         struct nlattr *nl_rates, *nl_rate;
1134         struct ieee80211_rate *rate;
1135         int i;
1136
1137         /* add HT info */
1138         if (sband->ht_cap.ht_supported &&
1139             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1140                      sizeof(sband->ht_cap.mcs),
1141                      &sband->ht_cap.mcs) ||
1142              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1143                          sband->ht_cap.cap) ||
1144              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1145                         sband->ht_cap.ampdu_factor) ||
1146              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1147                         sband->ht_cap.ampdu_density)))
1148                 return -ENOBUFS;
1149
1150         /* add VHT info */
1151         if (sband->vht_cap.vht_supported &&
1152             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1153                      sizeof(sband->vht_cap.vht_mcs),
1154                      &sband->vht_cap.vht_mcs) ||
1155              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1156                          sband->vht_cap.cap)))
1157                 return -ENOBUFS;
1158
1159         /* add bitrates */
1160         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1161         if (!nl_rates)
1162                 return -ENOBUFS;
1163
1164         for (i = 0; i < sband->n_bitrates; i++) {
1165                 nl_rate = nla_nest_start(msg, i);
1166                 if (!nl_rate)
1167                         return -ENOBUFS;
1168
1169                 rate = &sband->bitrates[i];
1170                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1171                                 rate->bitrate))
1172                         return -ENOBUFS;
1173                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1174                     nla_put_flag(msg,
1175                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1176                         return -ENOBUFS;
1177
1178                 nla_nest_end(msg, nl_rate);
1179         }
1180
1181         nla_nest_end(msg, nl_rates);
1182
1183         return 0;
1184 }
1185
1186 static int
1187 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1188                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1189 {
1190         u16 stypes;
1191         struct nlattr *nl_ftypes, *nl_ifs;
1192         enum nl80211_iftype ift;
1193         int i;
1194
1195         if (!mgmt_stypes)
1196                 return 0;
1197
1198         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1199         if (!nl_ifs)
1200                 return -ENOBUFS;
1201
1202         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1203                 nl_ftypes = nla_nest_start(msg, ift);
1204                 if (!nl_ftypes)
1205                         return -ENOBUFS;
1206                 i = 0;
1207                 stypes = mgmt_stypes[ift].tx;
1208                 while (stypes) {
1209                         if ((stypes & 1) &&
1210                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1211                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1212                                 return -ENOBUFS;
1213                         stypes >>= 1;
1214                         i++;
1215                 }
1216                 nla_nest_end(msg, nl_ftypes);
1217         }
1218
1219         nla_nest_end(msg, nl_ifs);
1220
1221         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1222         if (!nl_ifs)
1223                 return -ENOBUFS;
1224
1225         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1226                 nl_ftypes = nla_nest_start(msg, ift);
1227                 if (!nl_ftypes)
1228                         return -ENOBUFS;
1229                 i = 0;
1230                 stypes = mgmt_stypes[ift].rx;
1231                 while (stypes) {
1232                         if ((stypes & 1) &&
1233                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1234                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1235                                 return -ENOBUFS;
1236                         stypes >>= 1;
1237                         i++;
1238                 }
1239                 nla_nest_end(msg, nl_ftypes);
1240         }
1241         nla_nest_end(msg, nl_ifs);
1242
1243         return 0;
1244 }
1245
1246 struct nl80211_dump_wiphy_state {
1247         s64 filter_wiphy;
1248         long start;
1249         long split_start, band_start, chan_start;
1250         bool split;
1251 };
1252
1253 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1254                               enum nl80211_commands cmd,
1255                               struct sk_buff *msg, u32 portid, u32 seq,
1256                               int flags, struct nl80211_dump_wiphy_state *state)
1257 {
1258         void *hdr;
1259         struct nlattr *nl_bands, *nl_band;
1260         struct nlattr *nl_freqs, *nl_freq;
1261         struct nlattr *nl_cmds;
1262         enum ieee80211_band band;
1263         struct ieee80211_channel *chan;
1264         int i;
1265         const struct ieee80211_txrx_stypes *mgmt_stypes =
1266                                 rdev->wiphy.mgmt_stypes;
1267         u32 features;
1268
1269         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1270         if (!hdr)
1271                 return -ENOBUFS;
1272
1273         if (WARN_ON(!state))
1274                 return -EINVAL;
1275
1276         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1277             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1278                            wiphy_name(&rdev->wiphy)) ||
1279             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1280                         cfg80211_rdev_list_generation))
1281                 goto nla_put_failure;
1282
1283         if (cmd != NL80211_CMD_NEW_WIPHY)
1284                 goto finish;
1285
1286         switch (state->split_start) {
1287         case 0:
1288                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1289                                rdev->wiphy.retry_short) ||
1290                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1291                                rdev->wiphy.retry_long) ||
1292                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1293                                 rdev->wiphy.frag_threshold) ||
1294                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1295                                 rdev->wiphy.rts_threshold) ||
1296                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1297                                rdev->wiphy.coverage_class) ||
1298                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1299                                rdev->wiphy.max_scan_ssids) ||
1300                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1301                                rdev->wiphy.max_sched_scan_ssids) ||
1302                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1303                                 rdev->wiphy.max_scan_ie_len) ||
1304                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1305                                 rdev->wiphy.max_sched_scan_ie_len) ||
1306                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1307                                rdev->wiphy.max_match_sets))
1308                         goto nla_put_failure;
1309
1310                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1311                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1312                         goto nla_put_failure;
1313                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1314                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1315                         goto nla_put_failure;
1316                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1317                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1318                         goto nla_put_failure;
1319                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1320                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1321                         goto nla_put_failure;
1322                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1323                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1324                         goto nla_put_failure;
1325                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1326                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1327                         goto nla_put_failure;
1328                 state->split_start++;
1329                 if (state->split)
1330                         break;
1331         case 1:
1332                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1333                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1334                             rdev->wiphy.cipher_suites))
1335                         goto nla_put_failure;
1336
1337                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1338                                rdev->wiphy.max_num_pmkids))
1339                         goto nla_put_failure;
1340
1341                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1342                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1343                         goto nla_put_failure;
1344
1345                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1346                                 rdev->wiphy.available_antennas_tx) ||
1347                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1348                                 rdev->wiphy.available_antennas_rx))
1349                         goto nla_put_failure;
1350
1351                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1352                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1353                                 rdev->wiphy.probe_resp_offload))
1354                         goto nla_put_failure;
1355
1356                 if ((rdev->wiphy.available_antennas_tx ||
1357                      rdev->wiphy.available_antennas_rx) &&
1358                     rdev->ops->get_antenna) {
1359                         u32 tx_ant = 0, rx_ant = 0;
1360                         int res;
1361                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1362                         if (!res) {
1363                                 if (nla_put_u32(msg,
1364                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1365                                                 tx_ant) ||
1366                                     nla_put_u32(msg,
1367                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1368                                                 rx_ant))
1369                                         goto nla_put_failure;
1370                         }
1371                 }
1372
1373                 state->split_start++;
1374                 if (state->split)
1375                         break;
1376         case 2:
1377                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1378                                         rdev->wiphy.interface_modes))
1379                                 goto nla_put_failure;
1380                 state->split_start++;
1381                 if (state->split)
1382                         break;
1383         case 3:
1384                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1385                 if (!nl_bands)
1386                         goto nla_put_failure;
1387
1388                 for (band = state->band_start;
1389                      band < IEEE80211_NUM_BANDS; band++) {
1390                         struct ieee80211_supported_band *sband;
1391
1392                         sband = rdev->wiphy.bands[band];
1393
1394                         if (!sband)
1395                                 continue;
1396
1397                         nl_band = nla_nest_start(msg, band);
1398                         if (!nl_band)
1399                                 goto nla_put_failure;
1400
1401                         switch (state->chan_start) {
1402                         case 0:
1403                                 if (nl80211_send_band_rateinfo(msg, sband))
1404                                         goto nla_put_failure;
1405                                 state->chan_start++;
1406                                 if (state->split)
1407                                         break;
1408                         default:
1409                                 /* add frequencies */
1410                                 nl_freqs = nla_nest_start(
1411                                         msg, NL80211_BAND_ATTR_FREQS);
1412                                 if (!nl_freqs)
1413                                         goto nla_put_failure;
1414
1415                                 for (i = state->chan_start - 1;
1416                                      i < sband->n_channels;
1417                                      i++) {
1418                                         nl_freq = nla_nest_start(msg, i);
1419                                         if (!nl_freq)
1420                                                 goto nla_put_failure;
1421
1422                                         chan = &sband->channels[i];
1423
1424                                         if (nl80211_msg_put_channel(
1425                                                         msg, chan,
1426                                                         state->split))
1427                                                 goto nla_put_failure;
1428
1429                                         nla_nest_end(msg, nl_freq);
1430                                         if (state->split)
1431                                                 break;
1432                                 }
1433                                 if (i < sband->n_channels)
1434                                         state->chan_start = i + 2;
1435                                 else
1436                                         state->chan_start = 0;
1437                                 nla_nest_end(msg, nl_freqs);
1438                         }
1439
1440                         nla_nest_end(msg, nl_band);
1441
1442                         if (state->split) {
1443                                 /* start again here */
1444                                 if (state->chan_start)
1445                                         band--;
1446                                 break;
1447                         }
1448                 }
1449                 nla_nest_end(msg, nl_bands);
1450
1451                 if (band < IEEE80211_NUM_BANDS)
1452                         state->band_start = band + 1;
1453                 else
1454                         state->band_start = 0;
1455
1456                 /* if bands & channels are done, continue outside */
1457                 if (state->band_start == 0 && state->chan_start == 0)
1458                         state->split_start++;
1459                 if (state->split)
1460                         break;
1461         case 4:
1462                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1463                 if (!nl_cmds)
1464                         goto nla_put_failure;
1465
1466                 i = 0;
1467 #define CMD(op, n)                                                      \
1468                  do {                                                   \
1469                         if (rdev->ops->op) {                            \
1470                                 i++;                                    \
1471                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1472                                         goto nla_put_failure;           \
1473                         }                                               \
1474                 } while (0)
1475
1476                 CMD(add_virtual_intf, NEW_INTERFACE);
1477                 CMD(change_virtual_intf, SET_INTERFACE);
1478                 CMD(add_key, NEW_KEY);
1479                 CMD(start_ap, START_AP);
1480                 CMD(add_station, NEW_STATION);
1481                 CMD(add_mpath, NEW_MPATH);
1482                 CMD(update_mesh_config, SET_MESH_CONFIG);
1483                 CMD(change_bss, SET_BSS);
1484                 CMD(auth, AUTHENTICATE);
1485                 CMD(assoc, ASSOCIATE);
1486                 CMD(deauth, DEAUTHENTICATE);
1487                 CMD(disassoc, DISASSOCIATE);
1488                 CMD(join_ibss, JOIN_IBSS);
1489                 CMD(join_mesh, JOIN_MESH);
1490                 CMD(set_pmksa, SET_PMKSA);
1491                 CMD(del_pmksa, DEL_PMKSA);
1492                 CMD(flush_pmksa, FLUSH_PMKSA);
1493                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1494                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1495                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1496                 CMD(mgmt_tx, FRAME);
1497                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1498                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1499                         i++;
1500                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1501                                 goto nla_put_failure;
1502                 }
1503                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1504                     rdev->ops->join_mesh) {
1505                         i++;
1506                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1507                                 goto nla_put_failure;
1508                 }
1509                 CMD(set_wds_peer, SET_WDS_PEER);
1510                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1511                         CMD(tdls_mgmt, TDLS_MGMT);
1512                         CMD(tdls_oper, TDLS_OPER);
1513                 }
1514                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1515                         CMD(sched_scan_start, START_SCHED_SCAN);
1516                 CMD(probe_client, PROBE_CLIENT);
1517                 CMD(set_noack_map, SET_NOACK_MAP);
1518                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1519                         i++;
1520                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1521                                 goto nla_put_failure;
1522                 }
1523                 CMD(start_p2p_device, START_P2P_DEVICE);
1524                 CMD(set_mcast_rate, SET_MCAST_RATE);
1525 #ifdef CONFIG_NL80211_TESTMODE
1526                 CMD(testmode_cmd, TESTMODE);
1527 #endif
1528                 if (state->split) {
1529                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1530                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1531                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1532                                 CMD(channel_switch, CHANNEL_SWITCH);
1533                         CMD(set_qos_map, SET_QOS_MAP);
1534                         if (rdev->wiphy.features &
1535                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1536                                 CMD(add_tx_ts, ADD_TX_TS);
1537                 }
1538                 /* add into the if now */
1539 #undef CMD
1540
1541                 if (rdev->ops->connect || rdev->ops->auth) {
1542                         i++;
1543                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1544                                 goto nla_put_failure;
1545                 }
1546
1547                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1548                         i++;
1549                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1550                                 goto nla_put_failure;
1551                 }
1552
1553                 nla_nest_end(msg, nl_cmds);
1554                 state->split_start++;
1555                 if (state->split)
1556                         break;
1557         case 5:
1558                 if (rdev->ops->remain_on_channel &&
1559                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1560                     nla_put_u32(msg,
1561                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1562                                 rdev->wiphy.max_remain_on_channel_duration))
1563                         goto nla_put_failure;
1564
1565                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1566                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1567                         goto nla_put_failure;
1568
1569                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1570                         goto nla_put_failure;
1571                 state->split_start++;
1572                 if (state->split)
1573                         break;
1574         case 6:
1575 #ifdef CONFIG_PM
1576                 if (nl80211_send_wowlan(msg, rdev, state->split))
1577                         goto nla_put_failure;
1578                 state->split_start++;
1579                 if (state->split)
1580                         break;
1581 #else
1582                 state->split_start++;
1583 #endif
1584         case 7:
1585                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1586                                         rdev->wiphy.software_iftypes))
1587                         goto nla_put_failure;
1588
1589                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1590                                                    state->split))
1591                         goto nla_put_failure;
1592
1593                 state->split_start++;
1594                 if (state->split)
1595                         break;
1596         case 8:
1597                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1598                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1599                                 rdev->wiphy.ap_sme_capa))
1600                         goto nla_put_failure;
1601
1602                 features = rdev->wiphy.features;
1603                 /*
1604                  * We can only add the per-channel limit information if the
1605                  * dump is split, otherwise it makes it too big. Therefore
1606                  * only advertise it in that case.
1607                  */
1608                 if (state->split)
1609                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1610                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1611                         goto nla_put_failure;
1612
1613                 if (rdev->wiphy.ht_capa_mod_mask &&
1614                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1615                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1616                             rdev->wiphy.ht_capa_mod_mask))
1617                         goto nla_put_failure;
1618
1619                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1620                     rdev->wiphy.max_acl_mac_addrs &&
1621                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1622                                 rdev->wiphy.max_acl_mac_addrs))
1623                         goto nla_put_failure;
1624
1625                 /*
1626                  * Any information below this point is only available to
1627                  * applications that can deal with it being split. This
1628                  * helps ensure that newly added capabilities don't break
1629                  * older tools by overrunning their buffers.
1630                  *
1631                  * We still increment split_start so that in the split
1632                  * case we'll continue with more data in the next round,
1633                  * but break unconditionally so unsplit data stops here.
1634                  */
1635                 state->split_start++;
1636                 break;
1637         case 9:
1638                 if (rdev->wiphy.extended_capabilities &&
1639                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1640                              rdev->wiphy.extended_capabilities_len,
1641                              rdev->wiphy.extended_capabilities) ||
1642                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1643                              rdev->wiphy.extended_capabilities_len,
1644                              rdev->wiphy.extended_capabilities_mask)))
1645                         goto nla_put_failure;
1646
1647                 if (rdev->wiphy.vht_capa_mod_mask &&
1648                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1649                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1650                             rdev->wiphy.vht_capa_mod_mask))
1651                         goto nla_put_failure;
1652
1653                 state->split_start++;
1654                 break;
1655         case 10:
1656                 if (nl80211_send_coalesce(msg, rdev))
1657                         goto nla_put_failure;
1658
1659                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1660                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1661                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1662                         goto nla_put_failure;
1663
1664                 if (rdev->wiphy.max_ap_assoc_sta &&
1665                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1666                                 rdev->wiphy.max_ap_assoc_sta))
1667                         goto nla_put_failure;
1668
1669                 state->split_start++;
1670                 break;
1671         case 11:
1672                 if (rdev->wiphy.n_vendor_commands) {
1673                         const struct nl80211_vendor_cmd_info *info;
1674                         struct nlattr *nested;
1675
1676                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1677                         if (!nested)
1678                                 goto nla_put_failure;
1679
1680                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1681                                 info = &rdev->wiphy.vendor_commands[i].info;
1682                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1683                                         goto nla_put_failure;
1684                         }
1685                         nla_nest_end(msg, nested);
1686                 }
1687
1688                 if (rdev->wiphy.n_vendor_events) {
1689                         const struct nl80211_vendor_cmd_info *info;
1690                         struct nlattr *nested;
1691
1692                         nested = nla_nest_start(msg,
1693                                                 NL80211_ATTR_VENDOR_EVENTS);
1694                         if (!nested)
1695                                 goto nla_put_failure;
1696
1697                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1698                                 info = &rdev->wiphy.vendor_events[i];
1699                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1700                                         goto nla_put_failure;
1701                         }
1702                         nla_nest_end(msg, nested);
1703                 }
1704                 state->split_start++;
1705                 break;
1706         case 12:
1707                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1708                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1709                                rdev->wiphy.max_num_csa_counters))
1710                         goto nla_put_failure;
1711
1712                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1713                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1714                         goto nla_put_failure;
1715
1716                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1717                             sizeof(rdev->wiphy.ext_features),
1718                             rdev->wiphy.ext_features))
1719                         goto nla_put_failure;
1720
1721                 /* done */
1722                 state->split_start = 0;
1723                 break;
1724         }
1725  finish:
1726         genlmsg_end(msg, hdr);
1727         return 0;
1728
1729  nla_put_failure:
1730         genlmsg_cancel(msg, hdr);
1731         return -EMSGSIZE;
1732 }
1733
1734 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1735                                     struct netlink_callback *cb,
1736                                     struct nl80211_dump_wiphy_state *state)
1737 {
1738         struct nlattr **tb = nl80211_fam.attrbuf;
1739         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1740                               tb, nl80211_fam.maxattr, nl80211_policy);
1741         /* ignore parse errors for backward compatibility */
1742         if (ret)
1743                 return 0;
1744
1745         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1746         if (tb[NL80211_ATTR_WIPHY])
1747                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1748         if (tb[NL80211_ATTR_WDEV])
1749                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1750         if (tb[NL80211_ATTR_IFINDEX]) {
1751                 struct net_device *netdev;
1752                 struct cfg80211_registered_device *rdev;
1753                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1754
1755                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1756                 if (!netdev)
1757                         return -ENODEV;
1758                 if (netdev->ieee80211_ptr) {
1759                         rdev = wiphy_to_rdev(
1760                                 netdev->ieee80211_ptr->wiphy);
1761                         state->filter_wiphy = rdev->wiphy_idx;
1762                 }
1763         }
1764
1765         return 0;
1766 }
1767
1768 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1769 {
1770         int idx = 0, ret;
1771         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1772         struct cfg80211_registered_device *rdev;
1773
1774         rtnl_lock();
1775         if (!state) {
1776                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1777                 if (!state) {
1778                         rtnl_unlock();
1779                         return -ENOMEM;
1780                 }
1781                 state->filter_wiphy = -1;
1782                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1783                 if (ret) {
1784                         kfree(state);
1785                         rtnl_unlock();
1786                         return ret;
1787                 }
1788                 cb->args[0] = (long)state;
1789         }
1790
1791         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1792                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1793                         continue;
1794                 if (++idx <= state->start)
1795                         continue;
1796                 if (state->filter_wiphy != -1 &&
1797                     state->filter_wiphy != rdev->wiphy_idx)
1798                         continue;
1799                 /* attempt to fit multiple wiphy data chunks into the skb */
1800                 do {
1801                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1802                                                  skb,
1803                                                  NETLINK_CB(cb->skb).portid,
1804                                                  cb->nlh->nlmsg_seq,
1805                                                  NLM_F_MULTI, state);
1806                         if (ret < 0) {
1807                                 /*
1808                                  * If sending the wiphy data didn't fit (ENOBUFS
1809                                  * or EMSGSIZE returned), this SKB is still
1810                                  * empty (so it's not too big because another
1811                                  * wiphy dataset is already in the skb) and
1812                                  * we've not tried to adjust the dump allocation
1813                                  * yet ... then adjust the alloc size to be
1814                                  * bigger, and return 1 but with the empty skb.
1815                                  * This results in an empty message being RX'ed
1816                                  * in userspace, but that is ignored.
1817                                  *
1818                                  * We can then retry with the larger buffer.
1819                                  */
1820                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1821                                     !skb->len && !state->split &&
1822                                     cb->min_dump_alloc < 4096) {
1823                                         cb->min_dump_alloc = 4096;
1824                                         state->split_start = 0;
1825                                         rtnl_unlock();
1826                                         return 1;
1827                                 }
1828                                 idx--;
1829                                 break;
1830                         }
1831                 } while (state->split_start > 0);
1832                 break;
1833         }
1834         rtnl_unlock();
1835
1836         state->start = idx;
1837
1838         return skb->len;
1839 }
1840
1841 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1842 {
1843         kfree((void *)cb->args[0]);
1844         return 0;
1845 }
1846
1847 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1848 {
1849         struct sk_buff *msg;
1850         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1851         struct nl80211_dump_wiphy_state state = {};
1852
1853         msg = nlmsg_new(4096, GFP_KERNEL);
1854         if (!msg)
1855                 return -ENOMEM;
1856
1857         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1858                                info->snd_portid, info->snd_seq, 0,
1859                                &state) < 0) {
1860                 nlmsg_free(msg);
1861                 return -ENOBUFS;
1862         }
1863
1864         return genlmsg_reply(msg, info);
1865 }
1866
1867 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1868         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1869         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1870         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1871         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1872         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1873 };
1874
1875 static int parse_txq_params(struct nlattr *tb[],
1876                             struct ieee80211_txq_params *txq_params)
1877 {
1878         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1879             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1880             !tb[NL80211_TXQ_ATTR_AIFS])
1881                 return -EINVAL;
1882
1883         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1884         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1885         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1886         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1887         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1888
1889         if (txq_params->ac >= NL80211_NUM_ACS)
1890                 return -EINVAL;
1891
1892         return 0;
1893 }
1894
1895 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1896 {
1897         /*
1898          * You can only set the channel explicitly for WDS interfaces,
1899          * all others have their channel managed via their respective
1900          * "establish a connection" command (connect, join, ...)
1901          *
1902          * For AP/GO and mesh mode, the channel can be set with the
1903          * channel userspace API, but is only stored and passed to the
1904          * low-level driver when the AP starts or the mesh is joined.
1905          * This is for backward compatibility, userspace can also give
1906          * the channel in the start-ap or join-mesh commands instead.
1907          *
1908          * Monitors are special as they are normally slaved to
1909          * whatever else is going on, so they have their own special
1910          * operation to set the monitor channel if possible.
1911          */
1912         return !wdev ||
1913                 wdev->iftype == NL80211_IFTYPE_AP ||
1914                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1915                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1916                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1917 }
1918
1919 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1920                                  struct genl_info *info,
1921                                  struct cfg80211_chan_def *chandef)
1922 {
1923         u32 control_freq;
1924
1925         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1926                 return -EINVAL;
1927
1928         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1929
1930         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1931         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1932         chandef->center_freq1 = control_freq;
1933         chandef->center_freq2 = 0;
1934
1935         /* Primary channel not allowed */
1936         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1937                 return -EINVAL;
1938
1939         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1940                 enum nl80211_channel_type chantype;
1941
1942                 chantype = nla_get_u32(
1943                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1944
1945                 switch (chantype) {
1946                 case NL80211_CHAN_NO_HT:
1947                 case NL80211_CHAN_HT20:
1948                 case NL80211_CHAN_HT40PLUS:
1949                 case NL80211_CHAN_HT40MINUS:
1950                         cfg80211_chandef_create(chandef, chandef->chan,
1951                                                 chantype);
1952                         break;
1953                 default:
1954                         return -EINVAL;
1955                 }
1956         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1957                 chandef->width =
1958                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1959                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1960                         chandef->center_freq1 =
1961                                 nla_get_u32(
1962                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1963                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1964                         chandef->center_freq2 =
1965                                 nla_get_u32(
1966                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1967         }
1968
1969         if (!cfg80211_chandef_valid(chandef))
1970                 return -EINVAL;
1971
1972         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1973                                      IEEE80211_CHAN_DISABLED))
1974                 return -EINVAL;
1975
1976         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1977              chandef->width == NL80211_CHAN_WIDTH_10) &&
1978             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1979                 return -EINVAL;
1980
1981         return 0;
1982 }
1983
1984 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1985                                  struct net_device *dev,
1986                                  struct genl_info *info)
1987 {
1988         struct cfg80211_chan_def chandef;
1989         int result;
1990         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1991         struct wireless_dev *wdev = NULL;
1992
1993         if (dev)
1994                 wdev = dev->ieee80211_ptr;
1995         if (!nl80211_can_set_dev_channel(wdev))
1996                 return -EOPNOTSUPP;
1997         if (wdev)
1998                 iftype = wdev->iftype;
1999
2000         result = nl80211_parse_chandef(rdev, info, &chandef);
2001         if (result)
2002                 return result;
2003
2004         switch (iftype) {
2005         case NL80211_IFTYPE_AP:
2006         case NL80211_IFTYPE_P2P_GO:
2007                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2008                         result = -EINVAL;
2009                         break;
2010                 }
2011                 if (wdev->beacon_interval) {
2012                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2013                             !(rdev->wiphy.features &
2014                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2015                                 result = -EBUSY;
2016                                 break;
2017                         }
2018
2019                         /* Only allow dynamic channel width changes */
2020                         if (chandef.chan != wdev->preset_chandef.chan) {
2021                                 result = -EBUSY;
2022                                 break;
2023                         }
2024                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2025                         if (result)
2026                                 break;
2027                 }
2028                 wdev->preset_chandef = chandef;
2029                 result = 0;
2030                 break;
2031         case NL80211_IFTYPE_MESH_POINT:
2032                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2033                 break;
2034         case NL80211_IFTYPE_MONITOR:
2035                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2036                 break;
2037         default:
2038                 result = -EINVAL;
2039         }
2040
2041         return result;
2042 }
2043
2044 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2045 {
2046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047         struct net_device *netdev = info->user_ptr[1];
2048
2049         return __nl80211_set_channel(rdev, netdev, info);
2050 }
2051
2052 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2053 {
2054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2055         struct net_device *dev = info->user_ptr[1];
2056         struct wireless_dev *wdev = dev->ieee80211_ptr;
2057         const u8 *bssid;
2058
2059         if (!info->attrs[NL80211_ATTR_MAC])
2060                 return -EINVAL;
2061
2062         if (netif_running(dev))
2063                 return -EBUSY;
2064
2065         if (!rdev->ops->set_wds_peer)
2066                 return -EOPNOTSUPP;
2067
2068         if (wdev->iftype != NL80211_IFTYPE_WDS)
2069                 return -EOPNOTSUPP;
2070
2071         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2072         return rdev_set_wds_peer(rdev, dev, bssid);
2073 }
2074
2075
2076 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2077 {
2078         struct cfg80211_registered_device *rdev;
2079         struct net_device *netdev = NULL;
2080         struct wireless_dev *wdev;
2081         int result = 0, rem_txq_params = 0;
2082         struct nlattr *nl_txq_params;
2083         u32 changed;
2084         u8 retry_short = 0, retry_long = 0;
2085         u32 frag_threshold = 0, rts_threshold = 0;
2086         u8 coverage_class = 0;
2087
2088         ASSERT_RTNL();
2089
2090         /*
2091          * Try to find the wiphy and netdev. Normally this
2092          * function shouldn't need the netdev, but this is
2093          * done for backward compatibility -- previously
2094          * setting the channel was done per wiphy, but now
2095          * it is per netdev. Previous userland like hostapd
2096          * also passed a netdev to set_wiphy, so that it is
2097          * possible to let that go to the right netdev!
2098          */
2099
2100         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2101                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2102
2103                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2104                 if (netdev && netdev->ieee80211_ptr)
2105                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2106                 else
2107                         netdev = NULL;
2108         }
2109
2110         if (!netdev) {
2111                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2112                                                   info->attrs);
2113                 if (IS_ERR(rdev))
2114                         return PTR_ERR(rdev);
2115                 wdev = NULL;
2116                 netdev = NULL;
2117                 result = 0;
2118         } else
2119                 wdev = netdev->ieee80211_ptr;
2120
2121         /*
2122          * end workaround code, by now the rdev is available
2123          * and locked, and wdev may or may not be NULL.
2124          */
2125
2126         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2127                 result = cfg80211_dev_rename(
2128                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2129
2130         if (result)
2131                 return result;
2132
2133         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2134                 struct ieee80211_txq_params txq_params;
2135                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2136
2137                 if (!rdev->ops->set_txq_params)
2138                         return -EOPNOTSUPP;
2139
2140                 if (!netdev)
2141                         return -EINVAL;
2142
2143                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2144                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2145                         return -EINVAL;
2146
2147                 if (!netif_running(netdev))
2148                         return -ENETDOWN;
2149
2150                 nla_for_each_nested(nl_txq_params,
2151                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2152                                     rem_txq_params) {
2153                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2154                                            nla_data(nl_txq_params),
2155                                            nla_len(nl_txq_params),
2156                                            txq_params_policy);
2157                         if (result)
2158                                 return result;
2159                         result = parse_txq_params(tb, &txq_params);
2160                         if (result)
2161                                 return result;
2162
2163                         result = rdev_set_txq_params(rdev, netdev,
2164                                                      &txq_params);
2165                         if (result)
2166                                 return result;
2167                 }
2168         }
2169
2170         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2171                 result = __nl80211_set_channel(
2172                         rdev,
2173                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2174                         info);
2175                 if (result)
2176                         return result;
2177         }
2178
2179         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2180                 struct wireless_dev *txp_wdev = wdev;
2181                 enum nl80211_tx_power_setting type;
2182                 int idx, mbm = 0;
2183
2184                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2185                         txp_wdev = NULL;
2186
2187                 if (!rdev->ops->set_tx_power)
2188                         return -EOPNOTSUPP;
2189
2190                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2191                 type = nla_get_u32(info->attrs[idx]);
2192
2193                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2194                     (type != NL80211_TX_POWER_AUTOMATIC))
2195                         return -EINVAL;
2196
2197                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2198                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2199                         mbm = nla_get_u32(info->attrs[idx]);
2200                 }
2201
2202                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2203                 if (result)
2204                         return result;
2205         }
2206
2207         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2208             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2209                 u32 tx_ant, rx_ant;
2210                 if ((!rdev->wiphy.available_antennas_tx &&
2211                      !rdev->wiphy.available_antennas_rx) ||
2212                     !rdev->ops->set_antenna)
2213                         return -EOPNOTSUPP;
2214
2215                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2216                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2217
2218                 /* reject antenna configurations which don't match the
2219                  * available antenna masks, except for the "all" mask */
2220                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2221                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2222                         return -EINVAL;
2223
2224                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2225                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2226
2227                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2228                 if (result)
2229                         return result;
2230         }
2231
2232         changed = 0;
2233
2234         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2235                 retry_short = nla_get_u8(
2236                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2237                 if (retry_short == 0)
2238                         return -EINVAL;
2239
2240                 changed |= WIPHY_PARAM_RETRY_SHORT;
2241         }
2242
2243         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2244                 retry_long = nla_get_u8(
2245                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2246                 if (retry_long == 0)
2247                         return -EINVAL;
2248
2249                 changed |= WIPHY_PARAM_RETRY_LONG;
2250         }
2251
2252         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2253                 frag_threshold = nla_get_u32(
2254                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2255                 if (frag_threshold < 256)
2256                         return -EINVAL;
2257
2258                 if (frag_threshold != (u32) -1) {
2259                         /*
2260                          * Fragments (apart from the last one) are required to
2261                          * have even length. Make the fragmentation code
2262                          * simpler by stripping LSB should someone try to use
2263                          * odd threshold value.
2264                          */
2265                         frag_threshold &= ~0x1;
2266                 }
2267                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2268         }
2269
2270         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2271                 rts_threshold = nla_get_u32(
2272                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2273                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2274         }
2275
2276         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2277                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2278                         return -EINVAL;
2279
2280                 coverage_class = nla_get_u8(
2281                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2282                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2283         }
2284
2285         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2286                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2287                         return -EOPNOTSUPP;
2288
2289                 changed |= WIPHY_PARAM_DYN_ACK;
2290         }
2291
2292         if (changed) {
2293                 u8 old_retry_short, old_retry_long;
2294                 u32 old_frag_threshold, old_rts_threshold;
2295                 u8 old_coverage_class;
2296
2297                 if (!rdev->ops->set_wiphy_params)
2298                         return -EOPNOTSUPP;
2299
2300                 old_retry_short = rdev->wiphy.retry_short;
2301                 old_retry_long = rdev->wiphy.retry_long;
2302                 old_frag_threshold = rdev->wiphy.frag_threshold;
2303                 old_rts_threshold = rdev->wiphy.rts_threshold;
2304                 old_coverage_class = rdev->wiphy.coverage_class;
2305
2306                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2307                         rdev->wiphy.retry_short = retry_short;
2308                 if (changed & WIPHY_PARAM_RETRY_LONG)
2309                         rdev->wiphy.retry_long = retry_long;
2310                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2311                         rdev->wiphy.frag_threshold = frag_threshold;
2312                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2313                         rdev->wiphy.rts_threshold = rts_threshold;
2314                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2315                         rdev->wiphy.coverage_class = coverage_class;
2316
2317                 result = rdev_set_wiphy_params(rdev, changed);
2318                 if (result) {
2319                         rdev->wiphy.retry_short = old_retry_short;
2320                         rdev->wiphy.retry_long = old_retry_long;
2321                         rdev->wiphy.frag_threshold = old_frag_threshold;
2322                         rdev->wiphy.rts_threshold = old_rts_threshold;
2323                         rdev->wiphy.coverage_class = old_coverage_class;
2324                 }
2325         }
2326         return 0;
2327 }
2328
2329 static inline u64 wdev_id(struct wireless_dev *wdev)
2330 {
2331         return (u64)wdev->identifier |
2332                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2333 }
2334
2335 static int nl80211_send_chandef(struct sk_buff *msg,
2336                                 const struct cfg80211_chan_def *chandef)
2337 {
2338         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2339                 return -EINVAL;
2340
2341         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2342                         chandef->chan->center_freq))
2343                 return -ENOBUFS;
2344         switch (chandef->width) {
2345         case NL80211_CHAN_WIDTH_20_NOHT:
2346         case NL80211_CHAN_WIDTH_20:
2347         case NL80211_CHAN_WIDTH_40:
2348                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2349                                 cfg80211_get_chandef_type(chandef)))
2350                         return -ENOBUFS;
2351                 break;
2352         default:
2353                 break;
2354         }
2355         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2356                 return -ENOBUFS;
2357         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2358                 return -ENOBUFS;
2359         if (chandef->center_freq2 &&
2360             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2361                 return -ENOBUFS;
2362         return 0;
2363 }
2364
2365 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2366                               struct cfg80211_registered_device *rdev,
2367                               struct wireless_dev *wdev, bool removal)
2368 {
2369         struct net_device *dev = wdev->netdev;
2370         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2371         void *hdr;
2372
2373         if (removal)
2374                 cmd = NL80211_CMD_DEL_INTERFACE;
2375
2376         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2377         if (!hdr)
2378                 return -1;
2379
2380         if (dev &&
2381             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2382              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2383                 goto nla_put_failure;
2384
2385         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2386             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2387             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2388             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2389             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2390                         rdev->devlist_generation ^
2391                         (cfg80211_rdev_list_generation << 2)))
2392                 goto nla_put_failure;
2393
2394         if (rdev->ops->get_channel) {
2395                 int ret;
2396                 struct cfg80211_chan_def chandef;
2397
2398                 ret = rdev_get_channel(rdev, wdev, &chandef);
2399                 if (ret == 0) {
2400                         if (nl80211_send_chandef(msg, &chandef))
2401                                 goto nla_put_failure;
2402                 }
2403         }
2404
2405         if (wdev->ssid_len) {
2406                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2407                         goto nla_put_failure;
2408         }
2409
2410         genlmsg_end(msg, hdr);
2411         return 0;
2412
2413  nla_put_failure:
2414         genlmsg_cancel(msg, hdr);
2415         return -EMSGSIZE;
2416 }
2417
2418 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2419 {
2420         int wp_idx = 0;
2421         int if_idx = 0;
2422         int wp_start = cb->args[0];
2423         int if_start = cb->args[1];
2424         struct cfg80211_registered_device *rdev;
2425         struct wireless_dev *wdev;
2426
2427         rtnl_lock();
2428         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2429                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2430                         continue;
2431                 if (wp_idx < wp_start) {
2432                         wp_idx++;
2433                         continue;
2434                 }
2435                 if_idx = 0;
2436
2437                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2438                         if (if_idx < if_start) {
2439                                 if_idx++;
2440                                 continue;
2441                         }
2442                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2443                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2444                                                rdev, wdev, false) < 0) {
2445                                 goto out;
2446                         }
2447                         if_idx++;
2448                 }
2449
2450                 wp_idx++;
2451         }
2452  out:
2453         rtnl_unlock();
2454
2455         cb->args[0] = wp_idx;
2456         cb->args[1] = if_idx;
2457
2458         return skb->len;
2459 }
2460
2461 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2462 {
2463         struct sk_buff *msg;
2464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2465         struct wireless_dev *wdev = info->user_ptr[1];
2466
2467         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2468         if (!msg)
2469                 return -ENOMEM;
2470
2471         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2472                                rdev, wdev, false) < 0) {
2473                 nlmsg_free(msg);
2474                 return -ENOBUFS;
2475         }
2476
2477         return genlmsg_reply(msg, info);
2478 }
2479
2480 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2481         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2482         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2483         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2484         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2485         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2486         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2487 };
2488
2489 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2490 {
2491         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2492         int flag;
2493
2494         *mntrflags = 0;
2495
2496         if (!nla)
2497                 return -EINVAL;
2498
2499         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2500                              nla, mntr_flags_policy))
2501                 return -EINVAL;
2502
2503         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2504                 if (flags[flag])
2505                         *mntrflags |= (1<<flag);
2506
2507         return 0;
2508 }
2509
2510 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2511                                struct net_device *netdev, u8 use_4addr,
2512                                enum nl80211_iftype iftype)
2513 {
2514         if (!use_4addr) {
2515                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2516                         return -EBUSY;
2517                 return 0;
2518         }
2519
2520         switch (iftype) {
2521         case NL80211_IFTYPE_AP_VLAN:
2522                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2523                         return 0;
2524                 break;
2525         case NL80211_IFTYPE_STATION:
2526                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2527                         return 0;
2528                 break;
2529         default:
2530                 break;
2531         }
2532
2533         return -EOPNOTSUPP;
2534 }
2535
2536 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2537 {
2538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2539         struct vif_params params;
2540         int err;
2541         enum nl80211_iftype otype, ntype;
2542         struct net_device *dev = info->user_ptr[1];
2543         u32 _flags, *flags = NULL;
2544         bool change = false;
2545
2546         memset(&params, 0, sizeof(params));
2547
2548         otype = ntype = dev->ieee80211_ptr->iftype;
2549
2550         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2551                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2552                 if (otype != ntype)
2553                         change = true;
2554                 if (ntype > NL80211_IFTYPE_MAX)
2555                         return -EINVAL;
2556         }
2557
2558         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2559                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2560
2561                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2562                         return -EINVAL;
2563                 if (netif_running(dev))
2564                         return -EBUSY;
2565
2566                 wdev_lock(wdev);
2567                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2568                              IEEE80211_MAX_MESH_ID_LEN);
2569                 wdev->mesh_id_up_len =
2570                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2571                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2572                        wdev->mesh_id_up_len);
2573                 wdev_unlock(wdev);
2574         }
2575
2576         if (info->attrs[NL80211_ATTR_4ADDR]) {
2577                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2578                 change = true;
2579                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2580                 if (err)
2581                         return err;
2582         } else {
2583                 params.use_4addr = -1;
2584         }
2585
2586         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2587                 if (ntype != NL80211_IFTYPE_MONITOR)
2588                         return -EINVAL;
2589                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2590                                           &_flags);
2591                 if (err)
2592                         return err;
2593
2594                 flags = &_flags;
2595                 change = true;
2596         }
2597
2598         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2599             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2600                 return -EOPNOTSUPP;
2601
2602         if (change)
2603                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2604         else
2605                 err = 0;
2606
2607         if (!err && params.use_4addr != -1)
2608                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2609
2610         return err;
2611 }
2612
2613 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2614 {
2615         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2616         struct vif_params params;
2617         struct wireless_dev *wdev;
2618         struct sk_buff *msg, *event;
2619         int err;
2620         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2621         u32 flags;
2622
2623         /* to avoid failing a new interface creation due to pending removal */
2624         cfg80211_destroy_ifaces(rdev);
2625
2626         memset(&params, 0, sizeof(params));
2627
2628         if (!info->attrs[NL80211_ATTR_IFNAME])
2629                 return -EINVAL;
2630
2631         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2632                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2633                 if (type > NL80211_IFTYPE_MAX)
2634                         return -EINVAL;
2635         }
2636
2637         if (!rdev->ops->add_virtual_intf ||
2638             !(rdev->wiphy.interface_modes & (1 << type)))
2639                 return -EOPNOTSUPP;
2640
2641         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2642              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2643             info->attrs[NL80211_ATTR_MAC]) {
2644                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2645                            ETH_ALEN);
2646                 if (!is_valid_ether_addr(params.macaddr))
2647                         return -EADDRNOTAVAIL;
2648         }
2649
2650         if (info->attrs[NL80211_ATTR_4ADDR]) {
2651                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2652                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2653                 if (err)
2654                         return err;
2655         }
2656
2657         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2658                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2659                                   &flags);
2660
2661         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2662             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2663                 return -EOPNOTSUPP;
2664
2665         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2666         if (!msg)
2667                 return -ENOMEM;
2668
2669         wdev = rdev_add_virtual_intf(rdev,
2670                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2671                                 type, err ? NULL : &flags, &params);
2672         if (WARN_ON(!wdev)) {
2673                 nlmsg_free(msg);
2674                 return -EPROTO;
2675         } else if (IS_ERR(wdev)) {
2676                 nlmsg_free(msg);
2677                 return PTR_ERR(wdev);
2678         }
2679
2680         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2681                 wdev->owner_nlportid = info->snd_portid;
2682
2683         switch (type) {
2684         case NL80211_IFTYPE_MESH_POINT:
2685                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2686                         break;
2687                 wdev_lock(wdev);
2688                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2689                              IEEE80211_MAX_MESH_ID_LEN);
2690                 wdev->mesh_id_up_len =
2691                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2692                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2693                        wdev->mesh_id_up_len);
2694                 wdev_unlock(wdev);
2695                 break;
2696         case NL80211_IFTYPE_P2P_DEVICE:
2697                 /*
2698                  * P2P Device doesn't have a netdev, so doesn't go
2699                  * through the netdev notifier and must be added here
2700                  */
2701                 mutex_init(&wdev->mtx);
2702                 INIT_LIST_HEAD(&wdev->event_list);
2703                 spin_lock_init(&wdev->event_lock);
2704                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2705                 spin_lock_init(&wdev->mgmt_registrations_lock);
2706
2707                 wdev->identifier = ++rdev->wdev_id;
2708                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2709                 rdev->devlist_generation++;
2710                 break;
2711         default:
2712                 break;
2713         }
2714
2715         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2716                                rdev, wdev, false) < 0) {
2717                 nlmsg_free(msg);
2718                 return -ENOBUFS;
2719         }
2720
2721         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2722         if (event) {
2723                 if (nl80211_send_iface(event, 0, 0, 0,
2724                                        rdev, wdev, false) < 0) {
2725                         nlmsg_free(event);
2726                         goto out;
2727                 }
2728
2729                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2730                                         event, 0, NL80211_MCGRP_CONFIG,
2731                                         GFP_KERNEL);
2732         }
2733
2734 out:
2735         return genlmsg_reply(msg, info);
2736 }
2737
2738 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2739 {
2740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2741         struct wireless_dev *wdev = info->user_ptr[1];
2742         struct sk_buff *msg;
2743         int status;
2744
2745         if (!rdev->ops->del_virtual_intf)
2746                 return -EOPNOTSUPP;
2747
2748         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2749         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2750                 nlmsg_free(msg);
2751                 msg = NULL;
2752         }
2753
2754         /*
2755          * If we remove a wireless device without a netdev then clear
2756          * user_ptr[1] so that nl80211_post_doit won't dereference it
2757          * to check if it needs to do dev_put(). Otherwise it crashes
2758          * since the wdev has been freed, unlike with a netdev where
2759          * we need the dev_put() for the netdev to really be freed.
2760          */
2761         if (!wdev->netdev)
2762                 info->user_ptr[1] = NULL;
2763
2764         status = rdev_del_virtual_intf(rdev, wdev);
2765         if (status >= 0 && msg)
2766                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2767                                         msg, 0, NL80211_MCGRP_CONFIG,
2768                                         GFP_KERNEL);
2769         else
2770                 nlmsg_free(msg);
2771
2772         return status;
2773 }
2774
2775 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2776 {
2777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2778         struct net_device *dev = info->user_ptr[1];
2779         u16 noack_map;
2780
2781         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2782                 return -EINVAL;
2783
2784         if (!rdev->ops->set_noack_map)
2785                 return -EOPNOTSUPP;
2786
2787         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2788
2789         return rdev_set_noack_map(rdev, dev, noack_map);
2790 }
2791
2792 struct get_key_cookie {
2793         struct sk_buff *msg;
2794         int error;
2795         int idx;
2796 };
2797
2798 static void get_key_callback(void *c, struct key_params *params)
2799 {
2800         struct nlattr *key;
2801         struct get_key_cookie *cookie = c;
2802
2803         if ((params->key &&
2804              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2805                      params->key_len, params->key)) ||
2806             (params->seq &&
2807              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2808                      params->seq_len, params->seq)) ||
2809             (params->cipher &&
2810              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2811                          params->cipher)))
2812                 goto nla_put_failure;
2813
2814         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2815         if (!key)
2816                 goto nla_put_failure;
2817
2818         if ((params->key &&
2819              nla_put(cookie->msg, NL80211_KEY_DATA,
2820                      params->key_len, params->key)) ||
2821             (params->seq &&
2822              nla_put(cookie->msg, NL80211_KEY_SEQ,
2823                      params->seq_len, params->seq)) ||
2824             (params->cipher &&
2825              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2826                          params->cipher)))
2827                 goto nla_put_failure;
2828
2829         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2830                 goto nla_put_failure;
2831
2832         nla_nest_end(cookie->msg, key);
2833
2834         return;
2835  nla_put_failure:
2836         cookie->error = 1;
2837 }
2838
2839 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2840 {
2841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2842         int err;
2843         struct net_device *dev = info->user_ptr[1];
2844         u8 key_idx = 0;
2845         const u8 *mac_addr = NULL;
2846         bool pairwise;
2847         struct get_key_cookie cookie = {
2848                 .error = 0,
2849         };
2850         void *hdr;
2851         struct sk_buff *msg;
2852
2853         if (info->attrs[NL80211_ATTR_KEY_IDX])
2854                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2855
2856         if (key_idx > 5)
2857                 return -EINVAL;
2858
2859         if (info->attrs[NL80211_ATTR_MAC])
2860                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2861
2862         pairwise = !!mac_addr;
2863         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2864                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2865                 if (kt >= NUM_NL80211_KEYTYPES)
2866                         return -EINVAL;
2867                 if (kt != NL80211_KEYTYPE_GROUP &&
2868                     kt != NL80211_KEYTYPE_PAIRWISE)
2869                         return -EINVAL;
2870                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2871         }
2872
2873         if (!rdev->ops->get_key)
2874                 return -EOPNOTSUPP;
2875
2876         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2877                 return -ENOENT;
2878
2879         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2880         if (!msg)
2881                 return -ENOMEM;
2882
2883         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2884                              NL80211_CMD_NEW_KEY);
2885         if (!hdr)
2886                 goto nla_put_failure;
2887
2888         cookie.msg = msg;
2889         cookie.idx = key_idx;
2890
2891         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2892             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2893                 goto nla_put_failure;
2894         if (mac_addr &&
2895             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2896                 goto nla_put_failure;
2897
2898         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2899                            get_key_callback);
2900
2901         if (err)
2902                 goto free_msg;
2903
2904         if (cookie.error)
2905                 goto nla_put_failure;
2906
2907         genlmsg_end(msg, hdr);
2908         return genlmsg_reply(msg, info);
2909
2910  nla_put_failure:
2911         err = -ENOBUFS;
2912  free_msg:
2913         nlmsg_free(msg);
2914         return err;
2915 }
2916
2917 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2918 {
2919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2920         struct key_parse key;
2921         int err;
2922         struct net_device *dev = info->user_ptr[1];
2923
2924         err = nl80211_parse_key(info, &key);
2925         if (err)
2926                 return err;
2927
2928         if (key.idx < 0)
2929                 return -EINVAL;
2930
2931         /* only support setting default key */
2932         if (!key.def && !key.defmgmt)
2933                 return -EINVAL;
2934
2935         wdev_lock(dev->ieee80211_ptr);
2936
2937         if (key.def) {
2938                 if (!rdev->ops->set_default_key) {
2939                         err = -EOPNOTSUPP;
2940                         goto out;
2941                 }
2942
2943                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2944                 if (err)
2945                         goto out;
2946
2947                 err = rdev_set_default_key(rdev, dev, key.idx,
2948                                                  key.def_uni, key.def_multi);
2949
2950                 if (err)
2951                         goto out;
2952
2953 #ifdef CONFIG_CFG80211_WEXT
2954                 dev->ieee80211_ptr->wext.default_key = key.idx;
2955 #endif
2956         } else {
2957                 if (key.def_uni || !key.def_multi) {
2958                         err = -EINVAL;
2959                         goto out;
2960                 }
2961
2962                 if (!rdev->ops->set_default_mgmt_key) {
2963                         err = -EOPNOTSUPP;
2964                         goto out;
2965                 }
2966
2967                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2968                 if (err)
2969                         goto out;
2970
2971                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2972                 if (err)
2973                         goto out;
2974
2975 #ifdef CONFIG_CFG80211_WEXT
2976                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2977 #endif
2978         }
2979
2980  out:
2981         wdev_unlock(dev->ieee80211_ptr);
2982
2983         return err;
2984 }
2985
2986 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2987 {
2988         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2989         int err;
2990         struct net_device *dev = info->user_ptr[1];
2991         struct key_parse key;
2992         const u8 *mac_addr = NULL;
2993
2994         err = nl80211_parse_key(info, &key);
2995         if (err)
2996                 return err;
2997
2998         if (!key.p.key)
2999                 return -EINVAL;
3000
3001         if (info->attrs[NL80211_ATTR_MAC])
3002                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3003
3004         if (key.type == -1) {
3005                 if (mac_addr)
3006                         key.type = NL80211_KEYTYPE_PAIRWISE;
3007                 else
3008                         key.type = NL80211_KEYTYPE_GROUP;
3009         }
3010
3011         /* for now */
3012         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3013             key.type != NL80211_KEYTYPE_GROUP)
3014                 return -EINVAL;
3015
3016         if (!rdev->ops->add_key)
3017                 return -EOPNOTSUPP;
3018
3019         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3020                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3021                                            mac_addr))
3022                 return -EINVAL;
3023
3024         wdev_lock(dev->ieee80211_ptr);
3025         err = nl80211_key_allowed(dev->ieee80211_ptr);
3026         if (!err)
3027                 err = rdev_add_key(rdev, dev, key.idx,
3028                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3029                                     mac_addr, &key.p);
3030         wdev_unlock(dev->ieee80211_ptr);
3031
3032         return err;
3033 }
3034
3035 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3036 {
3037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3038         int err;
3039         struct net_device *dev = info->user_ptr[1];
3040         u8 *mac_addr = NULL;
3041         struct key_parse key;
3042
3043         err = nl80211_parse_key(info, &key);
3044         if (err)
3045                 return err;
3046
3047         if (info->attrs[NL80211_ATTR_MAC])
3048                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3049
3050         if (key.type == -1) {
3051                 if (mac_addr)
3052                         key.type = NL80211_KEYTYPE_PAIRWISE;
3053                 else
3054                         key.type = NL80211_KEYTYPE_GROUP;
3055         }
3056
3057         /* for now */
3058         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3059             key.type != NL80211_KEYTYPE_GROUP)
3060                 return -EINVAL;
3061
3062         if (!rdev->ops->del_key)
3063                 return -EOPNOTSUPP;
3064
3065         wdev_lock(dev->ieee80211_ptr);
3066         err = nl80211_key_allowed(dev->ieee80211_ptr);
3067
3068         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3069             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3070                 err = -ENOENT;
3071
3072         if (!err)
3073                 err = rdev_del_key(rdev, dev, key.idx,
3074                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3075                                    mac_addr);
3076
3077 #ifdef CONFIG_CFG80211_WEXT
3078         if (!err) {
3079                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3080                         dev->ieee80211_ptr->wext.default_key = -1;
3081                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3082                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3083         }
3084 #endif
3085         wdev_unlock(dev->ieee80211_ptr);
3086
3087         return err;
3088 }
3089
3090 /* This function returns an error or the number of nested attributes */
3091 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3092 {
3093         struct nlattr *attr;
3094         int n_entries = 0, tmp;
3095
3096         nla_for_each_nested(attr, nl_attr, tmp) {
3097                 if (nla_len(attr) != ETH_ALEN)
3098                         return -EINVAL;
3099
3100                 n_entries++;
3101         }
3102
3103         return n_entries;
3104 }
3105
3106 /*
3107  * This function parses ACL information and allocates memory for ACL data.
3108  * On successful return, the calling function is responsible to free the
3109  * ACL buffer returned by this function.
3110  */
3111 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3112                                                 struct genl_info *info)
3113 {
3114         enum nl80211_acl_policy acl_policy;
3115         struct nlattr *attr;
3116         struct cfg80211_acl_data *acl;
3117         int i = 0, n_entries, tmp;
3118
3119         if (!wiphy->max_acl_mac_addrs)
3120                 return ERR_PTR(-EOPNOTSUPP);
3121
3122         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3123                 return ERR_PTR(-EINVAL);
3124
3125         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3126         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3127             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3128                 return ERR_PTR(-EINVAL);
3129
3130         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3131                 return ERR_PTR(-EINVAL);
3132
3133         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3134         if (n_entries < 0)
3135                 return ERR_PTR(n_entries);
3136
3137         if (n_entries > wiphy->max_acl_mac_addrs)
3138                 return ERR_PTR(-ENOTSUPP);
3139
3140         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3141                       GFP_KERNEL);
3142         if (!acl)
3143                 return ERR_PTR(-ENOMEM);
3144
3145         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3146                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3147                 i++;
3148         }
3149
3150         acl->n_acl_entries = n_entries;
3151         acl->acl_policy = acl_policy;
3152
3153         return acl;
3154 }
3155
3156 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3157 {
3158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3159         struct net_device *dev = info->user_ptr[1];
3160         struct cfg80211_acl_data *acl;
3161         int err;
3162
3163         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3164             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3165                 return -EOPNOTSUPP;
3166
3167         if (!dev->ieee80211_ptr->beacon_interval)
3168                 return -EINVAL;
3169
3170         acl = parse_acl_data(&rdev->wiphy, info);
3171         if (IS_ERR(acl))
3172                 return PTR_ERR(acl);
3173
3174         err = rdev_set_mac_acl(rdev, dev, acl);
3175
3176         kfree(acl);
3177
3178         return err;
3179 }
3180
3181 static int nl80211_parse_beacon(struct nlattr *attrs[],
3182                                 struct cfg80211_beacon_data *bcn)
3183 {
3184         bool haveinfo = false;
3185
3186         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3187             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3188             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3189             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3190                 return -EINVAL;
3191
3192         memset(bcn, 0, sizeof(*bcn));
3193
3194         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3195                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3196                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3197                 if (!bcn->head_len)
3198                         return -EINVAL;
3199                 haveinfo = true;
3200         }
3201
3202         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3203                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3204                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3205                 haveinfo = true;
3206         }
3207
3208         if (!haveinfo)
3209                 return -EINVAL;
3210
3211         if (attrs[NL80211_ATTR_IE]) {
3212                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3213                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3214         }
3215
3216         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3217                 bcn->proberesp_ies =
3218                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3219                 bcn->proberesp_ies_len =
3220                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3221         }
3222
3223         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3224                 bcn->assocresp_ies =
3225                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3226                 bcn->assocresp_ies_len =
3227                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3228         }
3229
3230         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3231                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3232                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3233         }
3234
3235         return 0;
3236 }
3237
3238 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3239                                    struct cfg80211_ap_settings *params)
3240 {
3241         struct wireless_dev *wdev;
3242         bool ret = false;
3243
3244         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3245                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3246                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3247                         continue;
3248
3249                 if (!wdev->preset_chandef.chan)
3250                         continue;
3251
3252                 params->chandef = wdev->preset_chandef;
3253                 ret = true;
3254                 break;
3255         }
3256
3257         return ret;
3258 }
3259
3260 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3261                                     enum nl80211_auth_type auth_type,
3262                                     enum nl80211_commands cmd)
3263 {
3264         if (auth_type > NL80211_AUTHTYPE_MAX)
3265                 return false;
3266
3267         switch (cmd) {
3268         case NL80211_CMD_AUTHENTICATE:
3269                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3270                     auth_type == NL80211_AUTHTYPE_SAE)
3271                         return false;
3272                 return true;
3273         case NL80211_CMD_CONNECT:
3274         case NL80211_CMD_START_AP:
3275                 /* SAE not supported yet */
3276                 if (auth_type == NL80211_AUTHTYPE_SAE)
3277                         return false;
3278                 return true;
3279         default:
3280                 return false;
3281         }
3282 }
3283
3284 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3285 {
3286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3287         struct net_device *dev = info->user_ptr[1];
3288         struct wireless_dev *wdev = dev->ieee80211_ptr;
3289         struct cfg80211_ap_settings params;
3290         int err;
3291
3292         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3293             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3294                 return -EOPNOTSUPP;
3295
3296         if (!rdev->ops->start_ap)
3297                 return -EOPNOTSUPP;
3298
3299         if (wdev->beacon_interval)
3300                 return -EALREADY;
3301
3302         memset(&params, 0, sizeof(params));
3303
3304         /* these are required for START_AP */
3305         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3306             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3307             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3308                 return -EINVAL;
3309
3310         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3311         if (err)
3312                 return err;
3313
3314         params.beacon_interval =
3315                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3316         params.dtim_period =
3317                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3318
3319         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3320         if (err)
3321                 return err;
3322
3323         /*
3324          * In theory, some of these attributes should be required here
3325          * but since they were not used when the command was originally
3326          * added, keep them optional for old user space programs to let
3327          * them continue to work with drivers that do not need the
3328          * additional information -- drivers must check!
3329          */
3330         if (info->attrs[NL80211_ATTR_SSID]) {
3331                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3332                 params.ssid_len =
3333                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3334                 if (params.ssid_len == 0 ||
3335                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3336                         return -EINVAL;
3337         }
3338
3339         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3340                 params.hidden_ssid = nla_get_u32(
3341                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3342                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3343                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3344                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3345                         return -EINVAL;
3346         }
3347
3348         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3349
3350         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3351                 params.auth_type = nla_get_u32(
3352                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3353                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3354                                              NL80211_CMD_START_AP))
3355                         return -EINVAL;
3356         } else
3357                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3358
3359         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3360                                       NL80211_MAX_NR_CIPHER_SUITES);
3361         if (err)
3362                 return err;
3363
3364         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3365                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3366                         return -EOPNOTSUPP;
3367                 params.inactivity_timeout = nla_get_u16(
3368                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3369         }
3370
3371         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3372                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3373                         return -EINVAL;
3374                 params.p2p_ctwindow =
3375                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3376                 if (params.p2p_ctwindow > 127)
3377                         return -EINVAL;
3378                 if (params.p2p_ctwindow != 0 &&
3379                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3380                         return -EINVAL;
3381         }
3382
3383         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3384                 u8 tmp;
3385
3386                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3387                         return -EINVAL;
3388                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3389                 if (tmp > 1)
3390                         return -EINVAL;
3391                 params.p2p_opp_ps = tmp;
3392                 if (params.p2p_opp_ps != 0 &&
3393                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3394                         return -EINVAL;
3395         }
3396
3397         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3398                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3399                 if (err)
3400                         return err;
3401         } else if (wdev->preset_chandef.chan) {
3402                 params.chandef = wdev->preset_chandef;
3403         } else if (!nl80211_get_ap_channel(rdev, &params))
3404                 return -EINVAL;
3405
3406         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3407                                      wdev->iftype))
3408                 return -EINVAL;
3409
3410         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3411                 params.acl = parse_acl_data(&rdev->wiphy, info);
3412                 if (IS_ERR(params.acl))
3413                         return PTR_ERR(params.acl);
3414         }
3415
3416         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3417                 params.smps_mode =
3418                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3419                 switch (params.smps_mode) {
3420                 case NL80211_SMPS_OFF:
3421                         break;
3422                 case NL80211_SMPS_STATIC:
3423                         if (!(rdev->wiphy.features &
3424                               NL80211_FEATURE_STATIC_SMPS))
3425                                 return -EINVAL;
3426                         break;
3427                 case NL80211_SMPS_DYNAMIC:
3428                         if (!(rdev->wiphy.features &
3429                               NL80211_FEATURE_DYNAMIC_SMPS))
3430                                 return -EINVAL;
3431                         break;
3432                 default:
3433                         return -EINVAL;
3434                 }
3435         } else {
3436                 params.smps_mode = NL80211_SMPS_OFF;
3437         }
3438
3439         wdev_lock(wdev);
3440         err = rdev_start_ap(rdev, dev, &params);
3441         if (!err) {
3442                 wdev->preset_chandef = params.chandef;
3443                 wdev->beacon_interval = params.beacon_interval;
3444                 wdev->chandef = params.chandef;
3445                 wdev->ssid_len = params.ssid_len;
3446                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3447         }
3448         wdev_unlock(wdev);
3449
3450         kfree(params.acl);
3451
3452         return err;
3453 }
3454
3455 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3456 {
3457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3458         struct net_device *dev = info->user_ptr[1];
3459         struct wireless_dev *wdev = dev->ieee80211_ptr;
3460         struct cfg80211_beacon_data params;
3461         int err;
3462
3463         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3464             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3465                 return -EOPNOTSUPP;
3466
3467         if (!rdev->ops->change_beacon)
3468                 return -EOPNOTSUPP;
3469
3470         if (!wdev->beacon_interval)
3471                 return -EINVAL;
3472
3473         err = nl80211_parse_beacon(info->attrs, &params);
3474         if (err)
3475                 return err;
3476
3477         wdev_lock(wdev);
3478         err = rdev_change_beacon(rdev, dev, &params);
3479         wdev_unlock(wdev);
3480
3481         return err;
3482 }
3483
3484 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3485 {
3486         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3487         struct net_device *dev = info->user_ptr[1];
3488
3489         return cfg80211_stop_ap(rdev, dev, false);
3490 }
3491
3492 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3493         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3494         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3495         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3496         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3497         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3498         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3499 };
3500
3501 static int parse_station_flags(struct genl_info *info,
3502                                enum nl80211_iftype iftype,
3503                                struct station_parameters *params)
3504 {
3505         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3506         struct nlattr *nla;
3507         int flag;
3508
3509         /*
3510          * Try parsing the new attribute first so userspace
3511          * can specify both for older kernels.
3512          */
3513         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3514         if (nla) {
3515                 struct nl80211_sta_flag_update *sta_flags;
3516
3517                 sta_flags = nla_data(nla);
3518                 params->sta_flags_mask = sta_flags->mask;
3519                 params->sta_flags_set = sta_flags->set;
3520                 params->sta_flags_set &= params->sta_flags_mask;
3521                 if ((params->sta_flags_mask |
3522                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3523                         return -EINVAL;
3524                 return 0;
3525         }
3526
3527         /* if present, parse the old attribute */
3528
3529         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3530         if (!nla)
3531                 return 0;
3532
3533         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3534                              nla, sta_flags_policy))
3535                 return -EINVAL;
3536
3537         /*
3538          * Only allow certain flags for interface types so that
3539          * other attributes are silently ignored. Remember that
3540          * this is backward compatibility code with old userspace
3541          * and shouldn't be hit in other cases anyway.
3542          */
3543         switch (iftype) {
3544         case NL80211_IFTYPE_AP:
3545         case NL80211_IFTYPE_AP_VLAN:
3546         case NL80211_IFTYPE_P2P_GO:
3547                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3548                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3549                                          BIT(NL80211_STA_FLAG_WME) |
3550                                          BIT(NL80211_STA_FLAG_MFP);
3551                 break;
3552         case NL80211_IFTYPE_P2P_CLIENT:
3553         case NL80211_IFTYPE_STATION:
3554                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3555                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3556                 break;
3557         case NL80211_IFTYPE_MESH_POINT:
3558                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3559                                          BIT(NL80211_STA_FLAG_MFP) |
3560                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3561         default:
3562                 return -EINVAL;
3563         }
3564
3565         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3566                 if (flags[flag]) {
3567                         params->sta_flags_set |= (1<<flag);
3568
3569                         /* no longer support new API additions in old API */
3570                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3571                                 return -EINVAL;
3572                 }
3573         }
3574
3575         return 0;
3576 }
3577
3578 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3579                                  int attr)
3580 {
3581         struct nlattr *rate;
3582         u32 bitrate;
3583         u16 bitrate_compat;
3584         enum nl80211_attrs rate_flg;
3585
3586         rate = nla_nest_start(msg, attr);
3587         if (!rate)
3588                 return false;
3589
3590         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3591         bitrate = cfg80211_calculate_bitrate(info);
3592         /* report 16-bit bitrate only if we can */
3593         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3594         if (bitrate > 0 &&
3595             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3596                 return false;
3597         if (bitrate_compat > 0 &&
3598             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3599                 return false;
3600
3601         switch (info->bw) {
3602         case RATE_INFO_BW_5:
3603                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3604                 break;
3605         case RATE_INFO_BW_10:
3606                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3607                 break;
3608         default:
3609                 WARN_ON(1);
3610                 /* fall through */
3611         case RATE_INFO_BW_20:
3612                 rate_flg = 0;
3613                 break;
3614         case RATE_INFO_BW_40:
3615                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3616                 break;
3617         case RATE_INFO_BW_80:
3618                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3619                 break;
3620         case RATE_INFO_BW_160:
3621                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3622                 break;
3623         }
3624
3625         if (rate_flg && nla_put_flag(msg, rate_flg))
3626                 return false;
3627
3628         if (info->flags & RATE_INFO_FLAGS_MCS) {
3629                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3630                         return false;
3631                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3632                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3633                         return false;
3634         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3635                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3636                         return false;
3637                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3638                         return false;
3639                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3640                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3641                         return false;
3642         }
3643
3644         nla_nest_end(msg, rate);
3645         return true;
3646 }
3647
3648 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3649                                int id)
3650 {
3651         void *attr;
3652         int i = 0;
3653
3654         if (!mask)
3655                 return true;
3656
3657         attr = nla_nest_start(msg, id);
3658         if (!attr)
3659                 return false;
3660
3661         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3662                 if (!(mask & BIT(i)))
3663                         continue;
3664
3665                 if (nla_put_u8(msg, i, signal[i]))
3666                         return false;
3667         }
3668
3669         nla_nest_end(msg, attr);
3670
3671         return true;
3672 }
3673
3674 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3675                                 u32 seq, int flags,
3676                                 struct cfg80211_registered_device *rdev,
3677                                 struct net_device *dev,
3678                                 const u8 *mac_addr, struct station_info *sinfo)
3679 {
3680         void *hdr;
3681         struct nlattr *sinfoattr, *bss_param;
3682
3683         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3684         if (!hdr)
3685                 return -1;
3686
3687         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3688             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3689             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3690                 goto nla_put_failure;
3691
3692         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3693         if (!sinfoattr)
3694                 goto nla_put_failure;
3695
3696 #define PUT_SINFO(attr, memb, type) do {                                \
3697         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3698             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3699                              sinfo->memb))                              \
3700                 goto nla_put_failure;                                   \
3701         } while (0)
3702
3703         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3704         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3705
3706         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3707                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3708             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3709                         (u32)sinfo->rx_bytes))
3710                 goto nla_put_failure;
3711
3712         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3713                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3714             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3715                         (u32)sinfo->tx_bytes))
3716                 goto nla_put_failure;
3717
3718         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3719         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3720         PUT_SINFO(LLID, llid, u16);
3721         PUT_SINFO(PLID, plid, u16);
3722         PUT_SINFO(PLINK_STATE, plink_state, u8);
3723
3724         switch (rdev->wiphy.signal_type) {
3725         case CFG80211_SIGNAL_TYPE_MBM:
3726                 PUT_SINFO(SIGNAL, signal, u8);
3727                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3728                 break;
3729         default:
3730                 break;
3731         }
3732         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3733                 if (!nl80211_put_signal(msg, sinfo->chains,
3734                                         sinfo->chain_signal,
3735                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3736                         goto nla_put_failure;
3737         }
3738         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3739                 if (!nl80211_put_signal(msg, sinfo->chains,
3740                                         sinfo->chain_signal_avg,
3741                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3742                         goto nla_put_failure;
3743         }
3744         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3745                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3746                                           NL80211_STA_INFO_TX_BITRATE))
3747                         goto nla_put_failure;
3748         }
3749         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3750                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3751                                           NL80211_STA_INFO_RX_BITRATE))
3752                         goto nla_put_failure;
3753         }
3754
3755         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3756         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3757         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3758         PUT_SINFO(TX_FAILED, tx_failed, u32);
3759         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3760         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3761         PUT_SINFO(LOCAL_PM, local_pm, u32);
3762         PUT_SINFO(PEER_PM, peer_pm, u32);
3763         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3764
3765         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3766                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3767                 if (!bss_param)
3768                         goto nla_put_failure;
3769
3770                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3771                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3772                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3773                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3774                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3775                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3776                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3777                                sinfo->bss_param.dtim_period) ||
3778                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3779                                 sinfo->bss_param.beacon_interval))
3780                         goto nla_put_failure;
3781
3782                 nla_nest_end(msg, bss_param);
3783         }
3784         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3785             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3786                     sizeof(struct nl80211_sta_flag_update),
3787                     &sinfo->sta_flags))
3788                 goto nla_put_failure;
3789
3790         PUT_SINFO(T_OFFSET, t_offset, u64);
3791         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3792         PUT_SINFO(BEACON_RX, rx_beacon, u64);
3793         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3794
3795 #undef PUT_SINFO
3796
3797         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3798                 struct nlattr *tidsattr;
3799                 int tid;
3800
3801                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3802                 if (!tidsattr)
3803                         goto nla_put_failure;
3804
3805                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3806                         struct cfg80211_tid_stats *tidstats;
3807                         struct nlattr *tidattr;
3808
3809                         tidstats = &sinfo->pertid[tid];
3810
3811                         if (!tidstats->filled)
3812                                 continue;
3813
3814                         tidattr = nla_nest_start(msg, tid + 1);
3815                         if (!tidattr)
3816                                 goto nla_put_failure;
3817
3818 #define PUT_TIDVAL(attr, memb, type) do {                               \
3819         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3820             nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr,           \
3821                              tidstats->memb))                           \
3822                 goto nla_put_failure;                                   \
3823         } while (0)
3824
3825                         PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3826                         PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3827                         PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3828                         PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3829
3830 #undef PUT_TIDVAL
3831                         nla_nest_end(msg, tidattr);
3832                 }
3833
3834                 nla_nest_end(msg, tidsattr);
3835         }
3836
3837         nla_nest_end(msg, sinfoattr);
3838
3839         if (sinfo->assoc_req_ies_len &&
3840             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3841                     sinfo->assoc_req_ies))
3842                 goto nla_put_failure;
3843
3844         genlmsg_end(msg, hdr);
3845         return 0;
3846
3847  nla_put_failure:
3848         genlmsg_cancel(msg, hdr);
3849         return -EMSGSIZE;
3850 }
3851
3852 static int nl80211_dump_station(struct sk_buff *skb,
3853                                 struct netlink_callback *cb)
3854 {
3855         struct station_info sinfo;
3856         struct cfg80211_registered_device *rdev;
3857         struct wireless_dev *wdev;
3858         u8 mac_addr[ETH_ALEN];
3859         int sta_idx = cb->args[2];
3860         int err;
3861
3862         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3863         if (err)
3864                 return err;
3865
3866         if (!wdev->netdev) {
3867                 err = -EINVAL;
3868                 goto out_err;
3869         }
3870
3871         if (!rdev->ops->dump_station) {
3872                 err = -EOPNOTSUPP;
3873                 goto out_err;
3874         }
3875
3876         while (1) {
3877                 memset(&sinfo, 0, sizeof(sinfo));
3878                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3879                                         mac_addr, &sinfo);
3880                 if (err == -ENOENT)
3881                         break;
3882                 if (err)
3883                         goto out_err;
3884
3885                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3886                                 NETLINK_CB(cb->skb).portid,
3887                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3888                                 rdev, wdev->netdev, mac_addr,
3889                                 &sinfo) < 0)
3890                         goto out;
3891
3892                 sta_idx++;
3893         }
3894
3895
3896  out:
3897         cb->args[2] = sta_idx;
3898         err = skb->len;
3899  out_err:
3900         nl80211_finish_wdev_dump(rdev);
3901
3902         return err;
3903 }
3904
3905 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3906 {
3907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3908         struct net_device *dev = info->user_ptr[1];
3909         struct station_info sinfo;
3910         struct sk_buff *msg;
3911         u8 *mac_addr = NULL;
3912         int err;
3913
3914         memset(&sinfo, 0, sizeof(sinfo));
3915
3916         if (!info->attrs[NL80211_ATTR_MAC])
3917                 return -EINVAL;
3918
3919         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3920
3921         if (!rdev->ops->get_station)
3922                 return -EOPNOTSUPP;
3923
3924         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3925         if (err)
3926                 return err;
3927
3928         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3929         if (!msg)
3930                 return -ENOMEM;
3931
3932         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3933                                  info->snd_portid, info->snd_seq, 0,
3934                                  rdev, dev, mac_addr, &sinfo) < 0) {
3935                 nlmsg_free(msg);
3936                 return -ENOBUFS;
3937         }
3938
3939         return genlmsg_reply(msg, info);
3940 }
3941
3942 int cfg80211_check_station_change(struct wiphy *wiphy,
3943                                   struct station_parameters *params,
3944                                   enum cfg80211_station_type statype)
3945 {
3946         if (params->listen_interval != -1)
3947                 return -EINVAL;
3948         if (params->aid &&
3949             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3950                 return -EINVAL;
3951
3952         /* When you run into this, adjust the code below for the new flag */
3953         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3954
3955         switch (statype) {
3956         case CFG80211_STA_MESH_PEER_KERNEL:
3957         case CFG80211_STA_MESH_PEER_USER:
3958                 /*
3959                  * No ignoring the TDLS flag here -- the userspace mesh
3960                  * code doesn't have the bug of including TDLS in the
3961                  * mask everywhere.
3962                  */
3963                 if (params->sta_flags_mask &
3964                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3965                                   BIT(NL80211_STA_FLAG_MFP) |
3966                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3967                         return -EINVAL;
3968                 break;
3969         case CFG80211_STA_TDLS_PEER_SETUP:
3970         case CFG80211_STA_TDLS_PEER_ACTIVE:
3971                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3972                         return -EINVAL;
3973                 /* ignore since it can't change */
3974                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3975                 break;
3976         default:
3977                 /* disallow mesh-specific things */
3978                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3979                         return -EINVAL;
3980                 if (params->local_pm)
3981                         return -EINVAL;
3982                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3983                         return -EINVAL;
3984         }
3985
3986         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3987             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3988                 /* TDLS can't be set, ... */
3989                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3990                         return -EINVAL;
3991                 /*
3992                  * ... but don't bother the driver with it. This works around
3993                  * a hostapd/wpa_supplicant issue -- it always includes the
3994                  * TLDS_PEER flag in the mask even for AP mode.
3995                  */
3996                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3997         }
3998
3999         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
4000                 /* reject other things that can't change */
4001                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4002                         return -EINVAL;
4003                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4004                         return -EINVAL;
4005                 if (params->supported_rates)
4006                         return -EINVAL;
4007                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4008                         return -EINVAL;
4009         }
4010
4011         if (statype != CFG80211_STA_AP_CLIENT) {
4012                 if (params->vlan)
4013                         return -EINVAL;
4014         }
4015
4016         switch (statype) {
4017         case CFG80211_STA_AP_MLME_CLIENT:
4018                 /* Use this only for authorizing/unauthorizing a station */
4019                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4020                         return -EOPNOTSUPP;
4021                 break;
4022         case CFG80211_STA_AP_CLIENT:
4023                 /* accept only the listed bits */
4024                 if (params->sta_flags_mask &
4025                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4026                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4027                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4028                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4029                                   BIT(NL80211_STA_FLAG_WME) |
4030                                   BIT(NL80211_STA_FLAG_MFP)))
4031                         return -EINVAL;
4032
4033                 /* but authenticated/associated only if driver handles it */
4034                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4035                     params->sta_flags_mask &
4036                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4037                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4038                         return -EINVAL;
4039                 break;
4040         case CFG80211_STA_IBSS:
4041         case CFG80211_STA_AP_STA:
4042                 /* reject any changes other than AUTHORIZED */
4043                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4044                         return -EINVAL;
4045                 break;
4046         case CFG80211_STA_TDLS_PEER_SETUP:
4047                 /* reject any changes other than AUTHORIZED or WME */
4048                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4049                                                BIT(NL80211_STA_FLAG_WME)))
4050                         return -EINVAL;
4051                 /* force (at least) rates when authorizing */
4052                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4053                     !params->supported_rates)
4054                         return -EINVAL;
4055                 break;
4056         case CFG80211_STA_TDLS_PEER_ACTIVE:
4057                 /* reject any changes */
4058                 return -EINVAL;
4059         case CFG80211_STA_MESH_PEER_KERNEL:
4060                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4061                         return -EINVAL;
4062                 break;
4063         case CFG80211_STA_MESH_PEER_USER:
4064                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4065                         return -EINVAL;
4066                 break;
4067         }
4068
4069         return 0;
4070 }
4071 EXPORT_SYMBOL(cfg80211_check_station_change);
4072
4073 /*
4074  * Get vlan interface making sure it is running and on the right wiphy.
4075  */
4076 static struct net_device *get_vlan(struct genl_info *info,
4077                                    struct cfg80211_registered_device *rdev)
4078 {
4079         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4080         struct net_device *v;
4081         int ret;
4082
4083         if (!vlanattr)
4084                 return NULL;
4085
4086         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4087         if (!v)
4088                 return ERR_PTR(-ENODEV);
4089
4090         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4091                 ret = -EINVAL;
4092                 goto error;
4093         }
4094
4095         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4096             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4097             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4098                 ret = -EINVAL;
4099                 goto error;
4100         }
4101
4102         if (!netif_running(v)) {
4103                 ret = -ENETDOWN;
4104                 goto error;
4105         }
4106
4107         return v;
4108  error:
4109         dev_put(v);
4110         return ERR_PTR(ret);
4111 }
4112
4113 static const struct nla_policy
4114 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4115         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4116         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4117 };
4118
4119 static int nl80211_parse_sta_wme(struct genl_info *info,
4120                                  struct station_parameters *params)
4121 {
4122         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4123         struct nlattr *nla;
4124         int err;
4125
4126         /* parse WME attributes if present */
4127         if (!info->attrs[NL80211_ATTR_STA_WME])
4128                 return 0;
4129
4130         nla = info->attrs[NL80211_ATTR_STA_WME];
4131         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4132                                nl80211_sta_wme_policy);
4133         if (err)
4134                 return err;
4135
4136         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4137                 params->uapsd_queues = nla_get_u8(
4138                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4139         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4140                 return -EINVAL;
4141
4142         if (tb[NL80211_STA_WME_MAX_SP])
4143                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4144
4145         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4146                 return -EINVAL;
4147
4148         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4149
4150         return 0;
4151 }
4152
4153 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4154                                       struct station_parameters *params)
4155 {
4156         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4157                 params->supported_channels =
4158                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4159                 params->supported_channels_len =
4160                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4161                 /*
4162                  * Need to include at least one (first channel, number of
4163                  * channels) tuple for each subband, and must have proper
4164                  * tuples for the rest of the data as well.
4165                  */
4166                 if (params->supported_channels_len < 2)
4167                         return -EINVAL;
4168                 if (params->supported_channels_len % 2)
4169                         return -EINVAL;
4170         }
4171
4172         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4173                 params->supported_oper_classes =
4174                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4175                 params->supported_oper_classes_len =
4176                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4177                 /*
4178                  * The value of the Length field of the Supported Operating
4179                  * Classes element is between 2 and 253.
4180                  */
4181                 if (params->supported_oper_classes_len < 2 ||
4182                     params->supported_oper_classes_len > 253)
4183                         return -EINVAL;
4184         }
4185         return 0;
4186 }
4187
4188 static int nl80211_set_station_tdls(struct genl_info *info,
4189                                     struct station_parameters *params)
4190 {
4191         int err;
4192         /* Dummy STA entry gets updated once the peer capabilities are known */
4193         if (info->attrs[NL80211_ATTR_PEER_AID])
4194                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4195         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4196                 params->ht_capa =
4197                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4198         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4199                 params->vht_capa =
4200                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4201
4202         err = nl80211_parse_sta_channel_info(info, params);
4203         if (err)
4204                 return err;
4205
4206         return nl80211_parse_sta_wme(info, params);
4207 }
4208
4209 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4210 {
4211         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4212         struct net_device *dev = info->user_ptr[1];
4213         struct station_parameters params;
4214         u8 *mac_addr;
4215         int err;
4216
4217         memset(&params, 0, sizeof(params));
4218
4219         params.listen_interval = -1;
4220
4221         if (!rdev->ops->change_station)
4222                 return -EOPNOTSUPP;
4223
4224         if (info->attrs[NL80211_ATTR_STA_AID])
4225                 return -EINVAL;
4226
4227         if (!info->attrs[NL80211_ATTR_MAC])
4228                 return -EINVAL;
4229
4230         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4231
4232         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4233                 params.supported_rates =
4234                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4235                 params.supported_rates_len =
4236                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4237         }
4238
4239         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4240                 params.capability =
4241                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4242                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4243         }
4244
4245         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4246                 params.ext_capab =
4247                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4248                 params.ext_capab_len =
4249                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4250         }
4251
4252         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4253                 return -EINVAL;
4254
4255         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4256                 return -EINVAL;
4257
4258         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4259                 params.plink_action =
4260                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4261                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4262                         return -EINVAL;
4263         }
4264
4265         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4266                 params.plink_state =
4267                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4268                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4269                         return -EINVAL;
4270                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4271         }
4272
4273         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4274                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4275                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4276
4277                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4278                     pm > NL80211_MESH_POWER_MAX)
4279                         return -EINVAL;
4280
4281                 params.local_pm = pm;
4282         }
4283
4284         /* Include parameters for TDLS peer (will check later) */
4285         err = nl80211_set_station_tdls(info, &params);
4286         if (err)
4287                 return err;
4288
4289         params.vlan = get_vlan(info, rdev);
4290         if (IS_ERR(params.vlan))
4291                 return PTR_ERR(params.vlan);
4292
4293         switch (dev->ieee80211_ptr->iftype) {
4294         case NL80211_IFTYPE_AP:
4295         case NL80211_IFTYPE_AP_VLAN:
4296         case NL80211_IFTYPE_P2P_GO:
4297         case NL80211_IFTYPE_P2P_CLIENT:
4298         case NL80211_IFTYPE_STATION:
4299         case NL80211_IFTYPE_ADHOC:
4300         case NL80211_IFTYPE_MESH_POINT:
4301                 break;
4302         default:
4303                 err = -EOPNOTSUPP;
4304                 goto out_put_vlan;
4305         }
4306
4307         /* driver will call cfg80211_check_station_change() */
4308         err = rdev_change_station(rdev, dev, mac_addr, &params);
4309
4310  out_put_vlan:
4311         if (params.vlan)
4312                 dev_put(params.vlan);
4313
4314         return err;
4315 }
4316
4317 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4318 {
4319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4320         int err;
4321         struct net_device *dev = info->user_ptr[1];
4322         struct station_parameters params;
4323         u8 *mac_addr = NULL;
4324
4325         memset(&params, 0, sizeof(params));
4326
4327         if (!rdev->ops->add_station)
4328                 return -EOPNOTSUPP;
4329
4330         if (!info->attrs[NL80211_ATTR_MAC])
4331                 return -EINVAL;
4332
4333         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4334                 return -EINVAL;
4335
4336         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4337                 return -EINVAL;
4338
4339         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4340             !info->attrs[NL80211_ATTR_PEER_AID])
4341                 return -EINVAL;
4342
4343         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4344         params.supported_rates =
4345                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4346         params.supported_rates_len =
4347                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4348         params.listen_interval =
4349                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4350
4351         if (info->attrs[NL80211_ATTR_PEER_AID])
4352                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4353         else
4354                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4355         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4356                 return -EINVAL;
4357
4358         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4359                 params.capability =
4360                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4361                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4362         }
4363
4364         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4365                 params.ext_capab =
4366                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4367                 params.ext_capab_len =
4368                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4369         }
4370
4371         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4372                 params.ht_capa =
4373                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4374
4375         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4376                 params.vht_capa =
4377                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4378
4379         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4380                 params.opmode_notif_used = true;
4381                 params.opmode_notif =
4382                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4383         }
4384
4385         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4386                 params.plink_action =
4387                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4388                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4389                         return -EINVAL;
4390         }
4391
4392         err = nl80211_parse_sta_channel_info(info, &params);
4393         if (err)
4394                 return err;
4395
4396         err = nl80211_parse_sta_wme(info, &params);
4397         if (err)
4398                 return err;
4399
4400         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4401                 return -EINVAL;
4402
4403         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4404          * as userspace might just pass through the capabilities from the IEs
4405          * directly, rather than enforcing this restriction and returning an
4406          * error in this case.
4407          */
4408         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4409                 params.ht_capa = NULL;
4410                 params.vht_capa = NULL;
4411         }
4412
4413         /* When you run into this, adjust the code below for the new flag */
4414         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4415
4416         switch (dev->ieee80211_ptr->iftype) {
4417         case NL80211_IFTYPE_AP:
4418         case NL80211_IFTYPE_AP_VLAN:
4419         case NL80211_IFTYPE_P2P_GO:
4420                 /* ignore WME attributes if iface/sta is not capable */
4421                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4422                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4423                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4424
4425                 /* TDLS peers cannot be added */
4426                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4427                     info->attrs[NL80211_ATTR_PEER_AID])
4428                         return -EINVAL;
4429                 /* but don't bother the driver with it */
4430                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4431
4432                 /* allow authenticated/associated only if driver handles it */
4433                 if (!(rdev->wiphy.features &
4434                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4435                     params.sta_flags_mask &
4436                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4437                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4438                         return -EINVAL;
4439
4440                 /* must be last in here for error handling */
4441                 params.vlan = get_vlan(info, rdev);
4442                 if (IS_ERR(params.vlan))
4443                         return PTR_ERR(params.vlan);
4444                 break;
4445         case NL80211_IFTYPE_MESH_POINT:
4446                 /* ignore uAPSD data */
4447                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4448
4449                 /* associated is disallowed */
4450                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4451                         return -EINVAL;
4452                 /* TDLS peers cannot be added */
4453                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4454                     info->attrs[NL80211_ATTR_PEER_AID])
4455                         return -EINVAL;
4456                 break;
4457         case NL80211_IFTYPE_STATION:
4458         case NL80211_IFTYPE_P2P_CLIENT:
4459                 /* ignore uAPSD data */
4460                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4461
4462                 /* these are disallowed */
4463                 if (params.sta_flags_mask &
4464                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4465                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4466                         return -EINVAL;
4467                 /* Only TDLS peers can be added */
4468                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4469                         return -EINVAL;
4470                 /* Can only add if TDLS ... */
4471                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4472                         return -EOPNOTSUPP;
4473                 /* ... with external setup is supported */
4474                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4475                         return -EOPNOTSUPP;
4476                 /*
4477                  * Older wpa_supplicant versions always mark the TDLS peer
4478                  * as authorized, but it shouldn't yet be.
4479                  */
4480                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4481                 break;
4482         default:
4483                 return -EOPNOTSUPP;
4484         }
4485
4486         /* be aware of params.vlan when changing code here */
4487
4488         err = rdev_add_station(rdev, dev, mac_addr, &params);
4489
4490         if (params.vlan)
4491                 dev_put(params.vlan);
4492         return err;
4493 }
4494
4495 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4496 {
4497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4498         struct net_device *dev = info->user_ptr[1];
4499         struct station_del_parameters params;
4500
4501         memset(&params, 0, sizeof(params));
4502
4503         if (info->attrs[NL80211_ATTR_MAC])
4504                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4505
4506         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4507             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4508             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4509             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4510                 return -EINVAL;
4511
4512         if (!rdev->ops->del_station)
4513                 return -EOPNOTSUPP;
4514
4515         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4516                 params.subtype =
4517                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4518                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4519                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4520                         return -EINVAL;
4521         } else {
4522                 /* Default to Deauthentication frame */
4523                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4524         }
4525
4526         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4527                 params.reason_code =
4528                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4529                 if (params.reason_code == 0)
4530                         return -EINVAL; /* 0 is reserved */
4531         } else {
4532                 /* Default to reason code 2 */
4533                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4534         }
4535
4536         return rdev_del_station(rdev, dev, &params);
4537 }
4538
4539 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4540                                 int flags, struct net_device *dev,
4541                                 u8 *dst, u8 *next_hop,
4542                                 struct mpath_info *pinfo)
4543 {
4544         void *hdr;
4545         struct nlattr *pinfoattr;
4546
4547         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4548         if (!hdr)
4549                 return -1;
4550
4551         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4552             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4553             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4554             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4555                 goto nla_put_failure;
4556
4557         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4558         if (!pinfoattr)
4559                 goto nla_put_failure;
4560         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4561             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4562                         pinfo->frame_qlen))
4563                 goto nla_put_failure;
4564         if (((pinfo->filled & MPATH_INFO_SN) &&
4565              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4566             ((pinfo->filled & MPATH_INFO_METRIC) &&
4567              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4568                          pinfo->metric)) ||
4569             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4570              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4571                          pinfo->exptime)) ||
4572             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4573              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4574                         pinfo->flags)) ||
4575             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4576              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4577                          pinfo->discovery_timeout)) ||
4578             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4579              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4580                         pinfo->discovery_retries)))
4581                 goto nla_put_failure;
4582
4583         nla_nest_end(msg, pinfoattr);
4584
4585         genlmsg_end(msg, hdr);
4586         return 0;
4587
4588  nla_put_failure:
4589         genlmsg_cancel(msg, hdr);
4590         return -EMSGSIZE;
4591 }
4592
4593 static int nl80211_dump_mpath(struct sk_buff *skb,
4594                               struct netlink_callback *cb)
4595 {
4596         struct mpath_info pinfo;
4597         struct cfg80211_registered_device *rdev;
4598         struct wireless_dev *wdev;
4599         u8 dst[ETH_ALEN];
4600         u8 next_hop[ETH_ALEN];
4601         int path_idx = cb->args[2];
4602         int err;
4603
4604         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4605         if (err)
4606                 return err;
4607
4608         if (!rdev->ops->dump_mpath) {
4609                 err = -EOPNOTSUPP;
4610                 goto out_err;
4611         }
4612
4613         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4614                 err = -EOPNOTSUPP;
4615                 goto out_err;
4616         }
4617
4618         while (1) {
4619                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4620                                       next_hop, &pinfo);
4621                 if (err == -ENOENT)
4622                         break;
4623                 if (err)
4624                         goto out_err;
4625
4626                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4627                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4628                                        wdev->netdev, dst, next_hop,
4629                                        &pinfo) < 0)
4630                         goto out;
4631
4632                 path_idx++;
4633         }
4634
4635
4636  out:
4637         cb->args[2] = path_idx;
4638         err = skb->len;
4639  out_err:
4640         nl80211_finish_wdev_dump(rdev);
4641         return err;
4642 }
4643
4644 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4645 {
4646         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4647         int err;
4648         struct net_device *dev = info->user_ptr[1];
4649         struct mpath_info pinfo;
4650         struct sk_buff *msg;
4651         u8 *dst = NULL;
4652         u8 next_hop[ETH_ALEN];
4653
4654         memset(&pinfo, 0, sizeof(pinfo));
4655
4656         if (!info->attrs[NL80211_ATTR_MAC])
4657                 return -EINVAL;
4658
4659         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4660
4661         if (!rdev->ops->get_mpath)
4662                 return -EOPNOTSUPP;
4663
4664         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4665                 return -EOPNOTSUPP;
4666
4667         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4668         if (err)
4669                 return err;
4670
4671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4672         if (!msg)
4673                 return -ENOMEM;
4674
4675         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4676                                  dev, dst, next_hop, &pinfo) < 0) {
4677                 nlmsg_free(msg);
4678                 return -ENOBUFS;
4679         }
4680
4681         return genlmsg_reply(msg, info);
4682 }
4683
4684 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4685 {
4686         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4687         struct net_device *dev = info->user_ptr[1];
4688         u8 *dst = NULL;
4689         u8 *next_hop = NULL;
4690
4691         if (!info->attrs[NL80211_ATTR_MAC])
4692                 return -EINVAL;
4693
4694         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4695                 return -EINVAL;
4696
4697         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4698         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4699
4700         if (!rdev->ops->change_mpath)
4701                 return -EOPNOTSUPP;
4702
4703         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4704                 return -EOPNOTSUPP;
4705
4706         return rdev_change_mpath(rdev, dev, dst, next_hop);
4707 }
4708
4709 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4710 {
4711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4712         struct net_device *dev = info->user_ptr[1];
4713         u8 *dst = NULL;
4714         u8 *next_hop = NULL;
4715
4716         if (!info->attrs[NL80211_ATTR_MAC])
4717                 return -EINVAL;
4718
4719         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4720                 return -EINVAL;
4721
4722         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4723         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4724
4725         if (!rdev->ops->add_mpath)
4726                 return -EOPNOTSUPP;
4727
4728         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4729                 return -EOPNOTSUPP;
4730
4731         return rdev_add_mpath(rdev, dev, dst, next_hop);
4732 }
4733
4734 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4735 {
4736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4737         struct net_device *dev = info->user_ptr[1];
4738         u8 *dst = NULL;
4739
4740         if (info->attrs[NL80211_ATTR_MAC])
4741                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4742
4743         if (!rdev->ops->del_mpath)
4744                 return -EOPNOTSUPP;
4745
4746         return rdev_del_mpath(rdev, dev, dst);
4747 }
4748
4749 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4750 {
4751         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4752         int err;
4753         struct net_device *dev = info->user_ptr[1];
4754         struct mpath_info pinfo;
4755         struct sk_buff *msg;
4756         u8 *dst = NULL;
4757         u8 mpp[ETH_ALEN];
4758
4759         memset(&pinfo, 0, sizeof(pinfo));
4760
4761         if (!info->attrs[NL80211_ATTR_MAC])
4762                 return -EINVAL;
4763
4764         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4765
4766         if (!rdev->ops->get_mpp)
4767                 return -EOPNOTSUPP;
4768
4769         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4770                 return -EOPNOTSUPP;
4771
4772         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4773         if (err)
4774                 return err;
4775
4776         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4777         if (!msg)
4778                 return -ENOMEM;
4779
4780         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4781                                dev, dst, mpp, &pinfo) < 0) {
4782                 nlmsg_free(msg);
4783                 return -ENOBUFS;
4784         }
4785
4786         return genlmsg_reply(msg, info);
4787 }
4788
4789 static int nl80211_dump_mpp(struct sk_buff *skb,
4790                             struct netlink_callback *cb)
4791 {
4792         struct mpath_info pinfo;
4793         struct cfg80211_registered_device *rdev;
4794         struct wireless_dev *wdev;
4795         u8 dst[ETH_ALEN];
4796         u8 mpp[ETH_ALEN];
4797         int path_idx = cb->args[2];
4798         int err;
4799
4800         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4801         if (err)
4802                 return err;
4803
4804         if (!rdev->ops->dump_mpp) {
4805                 err = -EOPNOTSUPP;
4806                 goto out_err;
4807         }
4808
4809         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4810                 err = -EOPNOTSUPP;
4811                 goto out_err;
4812         }
4813
4814         while (1) {
4815                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4816                                     mpp, &pinfo);
4817                 if (err == -ENOENT)
4818                         break;
4819                 if (err)
4820                         goto out_err;
4821
4822                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4823                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4824                                        wdev->netdev, dst, mpp,
4825                                        &pinfo) < 0)
4826                         goto out;
4827
4828                 path_idx++;
4829         }
4830
4831  out:
4832         cb->args[2] = path_idx;
4833         err = skb->len;
4834  out_err:
4835         nl80211_finish_wdev_dump(rdev);
4836         return err;
4837 }
4838
4839 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4840 {
4841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4842         struct net_device *dev = info->user_ptr[1];
4843         struct wireless_dev *wdev = dev->ieee80211_ptr;
4844         struct bss_parameters params;
4845         int err;
4846
4847         memset(&params, 0, sizeof(params));
4848         /* default to not changing parameters */
4849         params.use_cts_prot = -1;
4850         params.use_short_preamble = -1;
4851         params.use_short_slot_time = -1;
4852         params.ap_isolate = -1;
4853         params.ht_opmode = -1;
4854         params.p2p_ctwindow = -1;
4855         params.p2p_opp_ps = -1;
4856
4857         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4858                 params.use_cts_prot =
4859                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4860         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4861                 params.use_short_preamble =
4862                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4863         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4864                 params.use_short_slot_time =
4865                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4866         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4867                 params.basic_rates =
4868                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4869                 params.basic_rates_len =
4870                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4871         }
4872         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4873                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4874         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4875                 params.ht_opmode =
4876                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4877
4878         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4879                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4880                         return -EINVAL;
4881                 params.p2p_ctwindow =
4882                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4883                 if (params.p2p_ctwindow < 0)
4884                         return -EINVAL;
4885                 if (params.p2p_ctwindow != 0 &&
4886                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4887                         return -EINVAL;
4888         }
4889
4890         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4891                 u8 tmp;
4892
4893                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4894                         return -EINVAL;
4895                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4896                 if (tmp > 1)
4897                         return -EINVAL;
4898                 params.p2p_opp_ps = tmp;
4899                 if (params.p2p_opp_ps &&
4900                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4901                         return -EINVAL;
4902         }
4903
4904         if (!rdev->ops->change_bss)
4905                 return -EOPNOTSUPP;
4906
4907         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4908             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4909                 return -EOPNOTSUPP;
4910
4911         wdev_lock(wdev);
4912         err = rdev_change_bss(rdev, dev, &params);
4913         wdev_unlock(wdev);
4914
4915         return err;
4916 }
4917
4918 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4919         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4920         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4921         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4922         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4923         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4924         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4925         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4926 };
4927
4928 static int parse_reg_rule(struct nlattr *tb[],
4929         struct ieee80211_reg_rule *reg_rule)
4930 {
4931         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4932         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4933
4934         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4935                 return -EINVAL;
4936         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4937                 return -EINVAL;
4938         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4939                 return -EINVAL;
4940         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4941                 return -EINVAL;
4942         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4943                 return -EINVAL;
4944
4945         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4946
4947         freq_range->start_freq_khz =
4948                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4949         freq_range->end_freq_khz =
4950                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4951         freq_range->max_bandwidth_khz =
4952                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4953
4954         power_rule->max_eirp =
4955                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4956
4957         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4958                 power_rule->max_antenna_gain =
4959                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4960
4961         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4962                 reg_rule->dfs_cac_ms =
4963                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4964
4965         return 0;
4966 }
4967
4968 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4969 {
4970         char *data = NULL;
4971         enum nl80211_user_reg_hint_type user_reg_hint_type;
4972
4973         /*
4974          * You should only get this when cfg80211 hasn't yet initialized
4975          * completely when built-in to the kernel right between the time
4976          * window between nl80211_init() and regulatory_init(), if that is
4977          * even possible.
4978          */
4979         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4980                 return -EINPROGRESS;
4981
4982         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4983                 user_reg_hint_type =
4984                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4985         else
4986                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4987
4988         switch (user_reg_hint_type) {
4989         case NL80211_USER_REG_HINT_USER:
4990         case NL80211_USER_REG_HINT_CELL_BASE:
4991                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4992                         return -EINVAL;
4993
4994                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4995                 return regulatory_hint_user(data, user_reg_hint_type);
4996         case NL80211_USER_REG_HINT_INDOOR:
4997                 return regulatory_hint_indoor_user();
4998         default:
4999                 return -EINVAL;
5000         }
5001 }
5002
5003 static int nl80211_get_mesh_config(struct sk_buff *skb,
5004                                    struct genl_info *info)
5005 {
5006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5007         struct net_device *dev = info->user_ptr[1];
5008         struct wireless_dev *wdev = dev->ieee80211_ptr;
5009         struct mesh_config cur_params;
5010         int err = 0;
5011         void *hdr;
5012         struct nlattr *pinfoattr;
5013         struct sk_buff *msg;
5014
5015         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5016                 return -EOPNOTSUPP;
5017
5018         if (!rdev->ops->get_mesh_config)
5019                 return -EOPNOTSUPP;
5020
5021         wdev_lock(wdev);
5022         /* If not connected, get default parameters */
5023         if (!wdev->mesh_id_len)
5024                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5025         else
5026                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5027         wdev_unlock(wdev);
5028
5029         if (err)
5030                 return err;
5031
5032         /* Draw up a netlink message to send back */
5033         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5034         if (!msg)
5035                 return -ENOMEM;
5036         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5037                              NL80211_CMD_GET_MESH_CONFIG);
5038         if (!hdr)
5039                 goto out;
5040         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5041         if (!pinfoattr)
5042                 goto nla_put_failure;
5043         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5044             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5045                         cur_params.dot11MeshRetryTimeout) ||
5046             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5047                         cur_params.dot11MeshConfirmTimeout) ||
5048             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5049                         cur_params.dot11MeshHoldingTimeout) ||
5050             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5051                         cur_params.dot11MeshMaxPeerLinks) ||
5052             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5053                        cur_params.dot11MeshMaxRetries) ||
5054             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5055                        cur_params.dot11MeshTTL) ||
5056             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5057                        cur_params.element_ttl) ||
5058             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5059                        cur_params.auto_open_plinks) ||
5060             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5061                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5062             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5063                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5064             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5065                         cur_params.path_refresh_time) ||
5066             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5067                         cur_params.min_discovery_timeout) ||
5068             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5069                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5070             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5071                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5072             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5073                         cur_params.dot11MeshHWMPperrMinInterval) ||
5074             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5075                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5076             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5077                        cur_params.dot11MeshHWMPRootMode) ||
5078             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5079                         cur_params.dot11MeshHWMPRannInterval) ||
5080             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5081                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5082             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5083                        cur_params.dot11MeshForwarding) ||
5084             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5085                         cur_params.rssi_threshold) ||
5086             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5087                         cur_params.ht_opmode) ||
5088             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5089                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5090             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5091                         cur_params.dot11MeshHWMProotInterval) ||
5092             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5093                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5094             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5095                         cur_params.power_mode) ||
5096             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5097                         cur_params.dot11MeshAwakeWindowDuration) ||
5098             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5099                         cur_params.plink_timeout))
5100                 goto nla_put_failure;
5101         nla_nest_end(msg, pinfoattr);
5102         genlmsg_end(msg, hdr);
5103         return genlmsg_reply(msg, info);
5104
5105  nla_put_failure:
5106         genlmsg_cancel(msg, hdr);
5107  out:
5108         nlmsg_free(msg);
5109         return -ENOBUFS;
5110 }
5111
5112 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5113         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5114         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5115         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5116         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5117         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5118         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5119         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5120         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5121         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5122         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5123         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5124         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5125         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5126         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5127         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5128         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5129         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5130         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5131         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5132         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5133         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5134         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5135         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5136         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5137         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5138         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5139         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5140         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5141 };
5142
5143 static const struct nla_policy
5144         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5145         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5146         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5147         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5148         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5149         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5150         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5151         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5152                                     .len = IEEE80211_MAX_DATA_LEN },
5153         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5154 };
5155
5156 static int nl80211_parse_mesh_config(struct genl_info *info,
5157                                      struct mesh_config *cfg,
5158                                      u32 *mask_out)
5159 {
5160         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5161         u32 mask = 0;
5162
5163 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5164 do {                                                                        \
5165         if (tb[attr]) {                                                     \
5166                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5167                         return -EINVAL;                                     \
5168                 cfg->param = fn(tb[attr]);                                  \
5169                 mask |= (1 << (attr - 1));                                  \
5170         }                                                                   \
5171 } while (0)
5172
5173
5174         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5175                 return -EINVAL;
5176         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5177                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5178                              nl80211_meshconf_params_policy))
5179                 return -EINVAL;
5180
5181         /* This makes sure that there aren't more than 32 mesh config
5182          * parameters (otherwise our bitfield scheme would not work.) */
5183         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5184
5185         /* Fill in the params struct */
5186         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5187                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5188                                   nla_get_u16);
5189         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5190                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5191                                   nla_get_u16);
5192         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5193                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5194                                   nla_get_u16);
5195         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5196                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5197                                   nla_get_u16);
5198         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5199                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5200                                   nla_get_u8);
5201         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5202                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5203         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5204                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5205                                   nla_get_u8);
5206         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5207                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5208                                   nla_get_u8);
5209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5210                                   1, 255, mask,
5211                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5212                                   nla_get_u32);
5213         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5214                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5215                                   nla_get_u8);
5216         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5217                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5218                                   nla_get_u32);
5219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5220                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5221                                   nla_get_u16);
5222         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5223                                   1, 65535, mask,
5224                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5225                                   nla_get_u32);
5226         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5227                                   1, 65535, mask,
5228                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5229                                   nla_get_u16);
5230         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5231                                   1, 65535, mask,
5232                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5233                                   nla_get_u16);
5234         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5235                                   dot11MeshHWMPnetDiameterTraversalTime,
5236                                   1, 65535, mask,
5237                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5238                                   nla_get_u16);
5239         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5240                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5241                                   nla_get_u8);
5242         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5243                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5244                                   nla_get_u16);
5245         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5246                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5247                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5248                                   nla_get_u8);
5249         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5250                                   mask, NL80211_MESHCONF_FORWARDING,
5251                                   nla_get_u8);
5252         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5253                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5254                                   nla_get_s32);
5255         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5256                                   mask, NL80211_MESHCONF_HT_OPMODE,
5257                                   nla_get_u16);
5258         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5259                                   1, 65535, mask,
5260                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5261                                   nla_get_u32);
5262         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5263                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5264                                   nla_get_u16);
5265         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5266                                   dot11MeshHWMPconfirmationInterval,
5267                                   1, 65535, mask,
5268                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5269                                   nla_get_u16);
5270         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5271                                   NL80211_MESH_POWER_ACTIVE,
5272                                   NL80211_MESH_POWER_MAX,
5273                                   mask, NL80211_MESHCONF_POWER_MODE,
5274                                   nla_get_u32);
5275         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5276                                   0, 65535, mask,
5277                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5278         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5279                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5280                                   nla_get_u32);
5281         if (mask_out)
5282                 *mask_out = mask;
5283
5284         return 0;
5285
5286 #undef FILL_IN_MESH_PARAM_IF_SET
5287 }
5288
5289 static int nl80211_parse_mesh_setup(struct genl_info *info,
5290                                      struct mesh_setup *setup)
5291 {
5292         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5293         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5294
5295         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5296                 return -EINVAL;
5297         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5298                              info->attrs[NL80211_ATTR_MESH_SETUP],
5299                              nl80211_mesh_setup_params_policy))
5300                 return -EINVAL;
5301
5302         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5303                 setup->sync_method =
5304                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5305                  IEEE80211_SYNC_METHOD_VENDOR :
5306                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5307
5308         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5309                 setup->path_sel_proto =
5310                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5311                  IEEE80211_PATH_PROTOCOL_VENDOR :
5312                  IEEE80211_PATH_PROTOCOL_HWMP;
5313
5314         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5315                 setup->path_metric =
5316                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5317                  IEEE80211_PATH_METRIC_VENDOR :
5318                  IEEE80211_PATH_METRIC_AIRTIME;
5319
5320
5321         if (tb[NL80211_MESH_SETUP_IE]) {
5322                 struct nlattr *ieattr =
5323                         tb[NL80211_MESH_SETUP_IE];
5324                 if (!is_valid_ie_attr(ieattr))
5325                         return -EINVAL;
5326                 setup->ie = nla_data(ieattr);
5327                 setup->ie_len = nla_len(ieattr);
5328         }
5329         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5330             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5331                 return -EINVAL;
5332         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5333         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5334         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5335         if (setup->is_secure)
5336                 setup->user_mpm = true;
5337
5338         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5339                 if (!setup->user_mpm)
5340                         return -EINVAL;
5341                 setup->auth_id =
5342                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5343         }
5344
5345         return 0;
5346 }
5347
5348 static int nl80211_update_mesh_config(struct sk_buff *skb,
5349                                       struct genl_info *info)
5350 {
5351         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5352         struct net_device *dev = info->user_ptr[1];
5353         struct wireless_dev *wdev = dev->ieee80211_ptr;
5354         struct mesh_config cfg;
5355         u32 mask;
5356         int err;
5357
5358         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5359                 return -EOPNOTSUPP;
5360
5361         if (!rdev->ops->update_mesh_config)
5362                 return -EOPNOTSUPP;
5363
5364         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5365         if (err)
5366                 return err;
5367
5368         wdev_lock(wdev);
5369         if (!wdev->mesh_id_len)
5370                 err = -ENOLINK;
5371
5372         if (!err)
5373                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5374
5375         wdev_unlock(wdev);
5376
5377         return err;
5378 }
5379
5380 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5381                               struct sk_buff *msg)
5382 {
5383         struct nlattr *nl_reg_rules;
5384         unsigned int i;
5385
5386         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5387             (regdom->dfs_region &&
5388              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5389                 goto nla_put_failure;
5390
5391         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5392         if (!nl_reg_rules)
5393                 goto nla_put_failure;
5394
5395         for (i = 0; i < regdom->n_reg_rules; i++) {
5396                 struct nlattr *nl_reg_rule;
5397                 const struct ieee80211_reg_rule *reg_rule;
5398                 const struct ieee80211_freq_range *freq_range;
5399                 const struct ieee80211_power_rule *power_rule;
5400                 unsigned int max_bandwidth_khz;
5401
5402                 reg_rule = &regdom->reg_rules[i];
5403                 freq_range = &reg_rule->freq_range;
5404                 power_rule = &reg_rule->power_rule;
5405
5406                 nl_reg_rule = nla_nest_start(msg, i);
5407                 if (!nl_reg_rule)
5408                         goto nla_put_failure;
5409
5410                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5411                 if (!max_bandwidth_khz)
5412                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5413                                                                   reg_rule);
5414
5415                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5416                                 reg_rule->flags) ||
5417                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5418                                 freq_range->start_freq_khz) ||
5419                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5420                                 freq_range->end_freq_khz) ||
5421                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5422                                 max_bandwidth_khz) ||
5423                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5424                                 power_rule->max_antenna_gain) ||
5425                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5426                                 power_rule->max_eirp) ||
5427                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5428                                 reg_rule->dfs_cac_ms))
5429                         goto nla_put_failure;
5430
5431                 nla_nest_end(msg, nl_reg_rule);
5432         }
5433
5434         nla_nest_end(msg, nl_reg_rules);
5435         return 0;
5436
5437 nla_put_failure:
5438         return -EMSGSIZE;
5439 }
5440
5441 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5442 {
5443         const struct ieee80211_regdomain *regdom = NULL;
5444         struct cfg80211_registered_device *rdev;
5445         struct wiphy *wiphy = NULL;
5446         struct sk_buff *msg;
5447         void *hdr;
5448
5449         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5450         if (!msg)
5451                 return -ENOBUFS;
5452
5453         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5454                              NL80211_CMD_GET_REG);
5455         if (!hdr)
5456                 goto put_failure;
5457
5458         if (info->attrs[NL80211_ATTR_WIPHY]) {
5459                 bool self_managed;
5460
5461                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5462                 if (IS_ERR(rdev)) {
5463                         nlmsg_free(msg);
5464                         return PTR_ERR(rdev);
5465                 }
5466
5467                 wiphy = &rdev->wiphy;
5468                 self_managed = wiphy->regulatory_flags &
5469                                REGULATORY_WIPHY_SELF_MANAGED;
5470                 regdom = get_wiphy_regdom(wiphy);
5471
5472                 /* a self-managed-reg device must have a private regdom */
5473                 if (WARN_ON(!regdom && self_managed)) {
5474                         nlmsg_free(msg);
5475                         return -EINVAL;
5476                 }
5477
5478                 if (regdom &&
5479                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5480                         goto nla_put_failure;
5481         }
5482
5483         if (!wiphy && reg_last_request_cell_base() &&
5484             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5485                         NL80211_USER_REG_HINT_CELL_BASE))
5486                 goto nla_put_failure;
5487
5488         rcu_read_lock();
5489
5490         if (!regdom)
5491                 regdom = rcu_dereference(cfg80211_regdomain);
5492
5493         if (nl80211_put_regdom(regdom, msg))
5494                 goto nla_put_failure_rcu;
5495
5496         rcu_read_unlock();
5497
5498         genlmsg_end(msg, hdr);
5499         return genlmsg_reply(msg, info);
5500
5501 nla_put_failure_rcu:
5502         rcu_read_unlock();
5503 nla_put_failure:
5504         genlmsg_cancel(msg, hdr);
5505 put_failure:
5506         nlmsg_free(msg);
5507         return -EMSGSIZE;
5508 }
5509
5510 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5511                                u32 seq, int flags, struct wiphy *wiphy,
5512                                const struct ieee80211_regdomain *regdom)
5513 {
5514         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5515                                    NL80211_CMD_GET_REG);
5516
5517         if (!hdr)
5518                 return -1;
5519
5520         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5521
5522         if (nl80211_put_regdom(regdom, msg))
5523                 goto nla_put_failure;
5524
5525         if (!wiphy && reg_last_request_cell_base() &&
5526             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5527                         NL80211_USER_REG_HINT_CELL_BASE))
5528                 goto nla_put_failure;
5529
5530         if (wiphy &&
5531             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5532                 goto nla_put_failure;
5533
5534         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5535             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5536                 goto nla_put_failure;
5537
5538         genlmsg_end(msg, hdr);
5539         return 0;
5540
5541 nla_put_failure:
5542         genlmsg_cancel(msg, hdr);
5543         return -EMSGSIZE;
5544 }
5545
5546 static int nl80211_get_reg_dump(struct sk_buff *skb,
5547                                 struct netlink_callback *cb)
5548 {
5549         const struct ieee80211_regdomain *regdom = NULL;
5550         struct cfg80211_registered_device *rdev;
5551         int err, reg_idx, start = cb->args[2];
5552
5553         rtnl_lock();
5554
5555         if (cfg80211_regdomain && start == 0) {
5556                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5557                                           NLM_F_MULTI, NULL,
5558                                           rtnl_dereference(cfg80211_regdomain));
5559                 if (err < 0)
5560                         goto out_err;
5561         }
5562
5563         /* the global regdom is idx 0 */
5564         reg_idx = 1;
5565         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5566                 regdom = get_wiphy_regdom(&rdev->wiphy);
5567                 if (!regdom)
5568                         continue;
5569
5570                 if (++reg_idx <= start)
5571                         continue;
5572
5573                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5574                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5575                 if (err < 0) {
5576                         reg_idx--;
5577                         break;
5578                 }
5579         }
5580
5581         cb->args[2] = reg_idx;
5582         err = skb->len;
5583 out_err:
5584         rtnl_unlock();
5585         return err;
5586 }
5587
5588 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5589 {
5590         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5591         struct nlattr *nl_reg_rule;
5592         char *alpha2;
5593         int rem_reg_rules, r;
5594         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5595         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5596         struct ieee80211_regdomain *rd;
5597
5598         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5599                 return -EINVAL;
5600
5601         if (!info->attrs[NL80211_ATTR_REG_RULES])
5602                 return -EINVAL;
5603
5604         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5605
5606         if (info->attrs[NL80211_ATTR_DFS_REGION])
5607                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5608
5609         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5610                             rem_reg_rules) {
5611                 num_rules++;
5612                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5613                         return -EINVAL;
5614         }
5615
5616         if (!reg_is_valid_request(alpha2))
5617                 return -EINVAL;
5618
5619         size_of_regd = sizeof(struct ieee80211_regdomain) +
5620                        num_rules * sizeof(struct ieee80211_reg_rule);
5621
5622         rd = kzalloc(size_of_regd, GFP_KERNEL);
5623         if (!rd)
5624                 return -ENOMEM;
5625
5626         rd->n_reg_rules = num_rules;
5627         rd->alpha2[0] = alpha2[0];
5628         rd->alpha2[1] = alpha2[1];
5629
5630         /*
5631          * Disable DFS master mode if the DFS region was
5632          * not supported or known on this kernel.
5633          */
5634         if (reg_supported_dfs_region(dfs_region))
5635                 rd->dfs_region = dfs_region;
5636
5637         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5638                             rem_reg_rules) {
5639                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5640                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5641                               reg_rule_policy);
5642                 if (r)
5643                         goto bad_reg;
5644                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5645                 if (r)
5646                         goto bad_reg;
5647
5648                 rule_idx++;
5649
5650                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5651                         r = -EINVAL;
5652                         goto bad_reg;
5653                 }
5654         }
5655
5656         r = set_regdom(rd);
5657         /* set_regdom took ownership */
5658         rd = NULL;
5659
5660  bad_reg:
5661         kfree(rd);
5662         return r;
5663 }
5664
5665 static int validate_scan_freqs(struct nlattr *freqs)
5666 {
5667         struct nlattr *attr1, *attr2;
5668         int n_channels = 0, tmp1, tmp2;
5669
5670         nla_for_each_nested(attr1, freqs, tmp1) {
5671                 n_channels++;
5672                 /*
5673                  * Some hardware has a limited channel list for
5674                  * scanning, and it is pretty much nonsensical
5675                  * to scan for a channel twice, so disallow that
5676                  * and don't require drivers to check that the
5677                  * channel list they get isn't longer than what
5678                  * they can scan, as long as they can scan all
5679                  * the channels they registered at once.
5680                  */
5681                 nla_for_each_nested(attr2, freqs, tmp2)
5682                         if (attr1 != attr2 &&
5683                             nla_get_u32(attr1) == nla_get_u32(attr2))
5684                                 return 0;
5685         }
5686
5687         return n_channels;
5688 }
5689
5690 static int nl80211_parse_random_mac(struct nlattr **attrs,
5691                                     u8 *mac_addr, u8 *mac_addr_mask)
5692 {
5693         int i;
5694
5695         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5696                 eth_zero_addr(mac_addr);
5697                 eth_zero_addr(mac_addr_mask);
5698                 mac_addr[0] = 0x2;
5699                 mac_addr_mask[0] = 0x3;
5700
5701                 return 0;
5702         }
5703
5704         /* need both or none */
5705         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5706                 return -EINVAL;
5707
5708         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5709         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5710
5711         /* don't allow or configure an mcast address */
5712         if (!is_multicast_ether_addr(mac_addr_mask) ||
5713             is_multicast_ether_addr(mac_addr))
5714                 return -EINVAL;
5715
5716         /*
5717          * allow users to pass a MAC address that has bits set outside
5718          * of the mask, but don't bother drivers with having to deal
5719          * with such bits
5720          */
5721         for (i = 0; i < ETH_ALEN; i++)
5722                 mac_addr[i] &= mac_addr_mask[i];
5723
5724         return 0;
5725 }
5726
5727 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5728 {
5729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5730         struct wireless_dev *wdev = info->user_ptr[1];
5731         struct cfg80211_scan_request *request;
5732         struct nlattr *attr;
5733         struct wiphy *wiphy;
5734         int err, tmp, n_ssids = 0, n_channels, i;
5735         size_t ie_len;
5736
5737         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5738                 return -EINVAL;
5739
5740         wiphy = &rdev->wiphy;
5741
5742         if (!rdev->ops->scan)
5743                 return -EOPNOTSUPP;
5744
5745         if (rdev->scan_req || rdev->scan_msg) {
5746                 err = -EBUSY;
5747                 goto unlock;
5748         }
5749
5750         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5751                 n_channels = validate_scan_freqs(
5752                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5753                 if (!n_channels) {
5754                         err = -EINVAL;
5755                         goto unlock;
5756                 }
5757         } else {
5758                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5759         }
5760
5761         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5762                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5763                         n_ssids++;
5764
5765         if (n_ssids > wiphy->max_scan_ssids) {
5766                 err = -EINVAL;
5767                 goto unlock;
5768         }
5769
5770         if (info->attrs[NL80211_ATTR_IE])
5771                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5772         else
5773                 ie_len = 0;
5774
5775         if (ie_len > wiphy->max_scan_ie_len) {
5776                 err = -EINVAL;
5777                 goto unlock;
5778         }
5779
5780         request = kzalloc(sizeof(*request)
5781                         + sizeof(*request->ssids) * n_ssids
5782                         + sizeof(*request->channels) * n_channels
5783                         + ie_len, GFP_KERNEL);
5784         if (!request) {
5785                 err = -ENOMEM;
5786                 goto unlock;
5787         }
5788
5789         if (n_ssids)
5790                 request->ssids = (void *)&request->channels[n_channels];
5791         request->n_ssids = n_ssids;
5792         if (ie_len) {
5793                 if (n_ssids)
5794                         request->ie = (void *)(request->ssids + n_ssids);
5795                 else
5796                         request->ie = (void *)(request->channels + n_channels);
5797         }
5798
5799         i = 0;
5800         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5801                 /* user specified, bail out if channel not found */
5802                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5803                         struct ieee80211_channel *chan;
5804
5805                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5806
5807                         if (!chan) {
5808                                 err = -EINVAL;
5809                                 goto out_free;
5810                         }
5811
5812                         /* ignore disabled channels */
5813                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5814                                 continue;
5815
5816                         request->channels[i] = chan;
5817                         i++;
5818                 }
5819         } else {
5820                 enum ieee80211_band band;
5821
5822                 /* all channels */
5823                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5824                         int j;
5825                         if (!wiphy->bands[band])
5826                                 continue;
5827                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5828                                 struct ieee80211_channel *chan;
5829
5830                                 chan = &wiphy->bands[band]->channels[j];
5831
5832                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5833                                         continue;
5834
5835                                 request->channels[i] = chan;
5836                                 i++;
5837                         }
5838                 }
5839         }
5840
5841         if (!i) {
5842                 err = -EINVAL;
5843                 goto out_free;
5844         }
5845
5846         request->n_channels = i;
5847
5848         i = 0;
5849         if (n_ssids) {
5850                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5851                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5852                                 err = -EINVAL;
5853                                 goto out_free;
5854                         }
5855                         request->ssids[i].ssid_len = nla_len(attr);
5856                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5857                         i++;
5858                 }
5859         }
5860
5861         if (info->attrs[NL80211_ATTR_IE]) {
5862                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5863                 memcpy((void *)request->ie,
5864                        nla_data(info->attrs[NL80211_ATTR_IE]),
5865                        request->ie_len);
5866         }
5867
5868         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5869                 if (wiphy->bands[i])
5870                         request->rates[i] =
5871                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5872
5873         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5874                 nla_for_each_nested(attr,
5875                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5876                                     tmp) {
5877                         enum ieee80211_band band = nla_type(attr);
5878
5879                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5880                                 err = -EINVAL;
5881                                 goto out_free;
5882                         }
5883
5884                         if (!wiphy->bands[band])
5885                                 continue;
5886
5887                         err = ieee80211_get_ratemask(wiphy->bands[band],
5888                                                      nla_data(attr),
5889                                                      nla_len(attr),
5890                                                      &request->rates[band]);
5891                         if (err)
5892                                 goto out_free;
5893                 }
5894         }
5895
5896         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5897                 request->flags = nla_get_u32(
5898                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5899                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5900                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5901                         err = -EOPNOTSUPP;
5902                         goto out_free;
5903                 }
5904
5905                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5906                         if (!(wiphy->features &
5907                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5908                                 err = -EOPNOTSUPP;
5909                                 goto out_free;
5910                         }
5911
5912                         if (wdev->current_bss) {
5913                                 err = -EOPNOTSUPP;
5914                                 goto out_free;
5915                         }
5916
5917                         err = nl80211_parse_random_mac(info->attrs,
5918                                                        request->mac_addr,
5919                                                        request->mac_addr_mask);
5920                         if (err)
5921                                 goto out_free;
5922                 }
5923         }
5924
5925         request->no_cck =
5926                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5927
5928         request->wdev = wdev;
5929         request->wiphy = &rdev->wiphy;
5930         request->scan_start = jiffies;
5931
5932         rdev->scan_req = request;
5933         err = rdev_scan(rdev, request);
5934
5935         if (!err) {
5936                 nl80211_send_scan_start(rdev, wdev);
5937                 if (wdev->netdev)
5938                         dev_hold(wdev->netdev);
5939         } else {
5940  out_free:
5941                 rdev->scan_req = NULL;
5942                 kfree(request);
5943         }
5944
5945  unlock:
5946         return err;
5947 }
5948
5949 static struct cfg80211_sched_scan_request *
5950 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5951                          struct nlattr **attrs)
5952 {
5953         struct cfg80211_sched_scan_request *request;
5954         struct nlattr *attr;
5955         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5956         u32 interval;
5957         enum ieee80211_band band;
5958         size_t ie_len;
5959         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5960         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5961
5962         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5963                 return ERR_PTR(-EINVAL);
5964
5965         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5966                 return ERR_PTR(-EINVAL);
5967
5968         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5969         if (interval == 0)
5970                 return ERR_PTR(-EINVAL);
5971
5972         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5973                 n_channels = validate_scan_freqs(
5974                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5975                 if (!n_channels)
5976                         return ERR_PTR(-EINVAL);
5977         } else {
5978                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5979         }
5980
5981         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5982                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5983                                     tmp)
5984                         n_ssids++;
5985
5986         if (n_ssids > wiphy->max_sched_scan_ssids)
5987                 return ERR_PTR(-EINVAL);
5988
5989         /*
5990          * First, count the number of 'real' matchsets. Due to an issue with
5991          * the old implementation, matchsets containing only the RSSI attribute
5992          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5993          * RSSI for all matchsets, rather than their own matchset for reporting
5994          * all APs with a strong RSSI. This is needed to be compatible with
5995          * older userspace that treated a matchset with only the RSSI as the
5996          * global RSSI for all other matchsets - if there are other matchsets.
5997          */
5998         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5999                 nla_for_each_nested(attr,
6000                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6001                                     tmp) {
6002                         struct nlattr *rssi;
6003
6004                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6005                                         nla_data(attr), nla_len(attr),
6006                                         nl80211_match_policy);
6007                         if (err)
6008                                 return ERR_PTR(err);
6009                         /* add other standalone attributes here */
6010                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6011                                 n_match_sets++;
6012                                 continue;
6013                         }
6014                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6015                         if (rssi)
6016                                 default_match_rssi = nla_get_s32(rssi);
6017                 }
6018         }
6019
6020         /* However, if there's no other matchset, add the RSSI one */
6021         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6022                 n_match_sets = 1;
6023
6024         if (n_match_sets > wiphy->max_match_sets)
6025                 return ERR_PTR(-EINVAL);
6026
6027         if (attrs[NL80211_ATTR_IE])
6028                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6029         else
6030                 ie_len = 0;
6031
6032         if (ie_len > wiphy->max_sched_scan_ie_len)
6033                 return ERR_PTR(-EINVAL);
6034
6035         request = kzalloc(sizeof(*request)
6036                         + sizeof(*request->ssids) * n_ssids
6037                         + sizeof(*request->match_sets) * n_match_sets
6038                         + sizeof(*request->channels) * n_channels
6039                         + ie_len, GFP_KERNEL);
6040         if (!request)
6041                 return ERR_PTR(-ENOMEM);
6042
6043         if (n_ssids)
6044                 request->ssids = (void *)&request->channels[n_channels];
6045         request->n_ssids = n_ssids;
6046         if (ie_len) {
6047                 if (n_ssids)
6048                         request->ie = (void *)(request->ssids + n_ssids);
6049                 else
6050                         request->ie = (void *)(request->channels + n_channels);
6051         }
6052
6053         if (n_match_sets) {
6054                 if (request->ie)
6055                         request->match_sets = (void *)(request->ie + ie_len);
6056                 else if (n_ssids)
6057                         request->match_sets =
6058                                 (void *)(request->ssids + n_ssids);
6059                 else
6060                         request->match_sets =
6061                                 (void *)(request->channels + n_channels);
6062         }
6063         request->n_match_sets = n_match_sets;
6064
6065         i = 0;
6066         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6067                 /* user specified, bail out if channel not found */
6068                 nla_for_each_nested(attr,
6069                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6070                                     tmp) {
6071                         struct ieee80211_channel *chan;
6072
6073                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6074
6075                         if (!chan) {
6076                                 err = -EINVAL;
6077                                 goto out_free;
6078                         }
6079
6080                         /* ignore disabled channels */
6081                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6082                                 continue;
6083
6084                         request->channels[i] = chan;
6085                         i++;
6086                 }
6087         } else {
6088                 /* all channels */
6089                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6090                         int j;
6091                         if (!wiphy->bands[band])
6092                                 continue;
6093                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6094                                 struct ieee80211_channel *chan;
6095
6096                                 chan = &wiphy->bands[band]->channels[j];
6097
6098                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6099                                         continue;
6100
6101                                 request->channels[i] = chan;
6102                                 i++;
6103                         }
6104                 }
6105         }
6106
6107         if (!i) {
6108                 err = -EINVAL;
6109                 goto out_free;
6110         }
6111
6112         request->n_channels = i;
6113
6114         i = 0;
6115         if (n_ssids) {
6116                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6117                                     tmp) {
6118                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6119                                 err = -EINVAL;
6120                                 goto out_free;
6121                         }
6122                         request->ssids[i].ssid_len = nla_len(attr);
6123                         memcpy(request->ssids[i].ssid, nla_data(attr),
6124                                nla_len(attr));
6125                         i++;
6126                 }
6127         }
6128
6129         i = 0;
6130         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6131                 nla_for_each_nested(attr,
6132                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6133                                     tmp) {
6134                         struct nlattr *ssid, *rssi;
6135
6136                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6137                                         nla_data(attr), nla_len(attr),
6138                                         nl80211_match_policy);
6139                         if (err)
6140                                 goto out_free;
6141                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6142                         if (ssid) {
6143                                 if (WARN_ON(i >= n_match_sets)) {
6144                                         /* this indicates a programming error,
6145                                          * the loop above should have verified
6146                                          * things properly
6147                                          */
6148                                         err = -EINVAL;
6149                                         goto out_free;
6150                                 }
6151
6152                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6153                                         err = -EINVAL;
6154                                         goto out_free;
6155                                 }
6156                                 memcpy(request->match_sets[i].ssid.ssid,
6157                                        nla_data(ssid), nla_len(ssid));
6158                                 request->match_sets[i].ssid.ssid_len =
6159                                         nla_len(ssid);
6160                                 /* special attribute - old implemenation w/a */
6161                                 request->match_sets[i].rssi_thold =
6162                                         default_match_rssi;
6163                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6164                                 if (rssi)
6165                                         request->match_sets[i].rssi_thold =
6166                                                 nla_get_s32(rssi);
6167                         }
6168                         i++;
6169                 }
6170
6171                 /* there was no other matchset, so the RSSI one is alone */
6172                 if (i == 0 && n_match_sets)
6173                         request->match_sets[0].rssi_thold = default_match_rssi;
6174
6175                 request->min_rssi_thold = INT_MAX;
6176                 for (i = 0; i < n_match_sets; i++)
6177                         request->min_rssi_thold =
6178                                 min(request->match_sets[i].rssi_thold,
6179                                     request->min_rssi_thold);
6180         } else {
6181                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6182         }
6183
6184         if (ie_len) {
6185                 request->ie_len = ie_len;
6186                 memcpy((void *)request->ie,
6187                        nla_data(attrs[NL80211_ATTR_IE]),
6188                        request->ie_len);
6189         }
6190
6191         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6192                 request->flags = nla_get_u32(
6193                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6194                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6195                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6196                         err = -EOPNOTSUPP;
6197                         goto out_free;
6198                 }
6199
6200                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6201                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6202
6203                         if (!wdev) /* must be net-detect */
6204                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6205
6206                         if (!(wiphy->features & flg)) {
6207                                 err = -EOPNOTSUPP;
6208                                 goto out_free;
6209                         }
6210
6211                         if (wdev && wdev->current_bss) {
6212                                 err = -EOPNOTSUPP;
6213                                 goto out_free;
6214                         }
6215
6216                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6217                                                        request->mac_addr_mask);
6218                         if (err)
6219                                 goto out_free;
6220                 }
6221         }
6222
6223         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6224                 request->delay =
6225                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6226
6227         request->interval = interval;
6228         request->scan_start = jiffies;
6229
6230         return request;
6231
6232 out_free:
6233         kfree(request);
6234         return ERR_PTR(err);
6235 }
6236
6237 static int nl80211_start_sched_scan(struct sk_buff *skb,
6238                                     struct genl_info *info)
6239 {
6240         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6241         struct net_device *dev = info->user_ptr[1];
6242         struct wireless_dev *wdev = dev->ieee80211_ptr;
6243         struct cfg80211_sched_scan_request *sched_scan_req;
6244         int err;
6245
6246         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6247             !rdev->ops->sched_scan_start)
6248                 return -EOPNOTSUPP;
6249
6250         if (rdev->sched_scan_req)
6251                 return -EINPROGRESS;
6252
6253         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6254                                                   info->attrs);
6255
6256         err = PTR_ERR_OR_ZERO(sched_scan_req);
6257         if (err)
6258                 goto out_err;
6259
6260         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6261         if (err)
6262                 goto out_free;
6263
6264         sched_scan_req->dev = dev;
6265         sched_scan_req->wiphy = &rdev->wiphy;
6266
6267         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6268                 sched_scan_req->owner_nlportid = info->snd_portid;
6269
6270         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6271
6272         nl80211_send_sched_scan(rdev, dev,
6273                                 NL80211_CMD_START_SCHED_SCAN);
6274         return 0;
6275
6276 out_free:
6277         kfree(sched_scan_req);
6278 out_err:
6279         return err;
6280 }
6281
6282 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6283                                    struct genl_info *info)
6284 {
6285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6286
6287         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6288             !rdev->ops->sched_scan_stop)
6289                 return -EOPNOTSUPP;
6290
6291         return __cfg80211_stop_sched_scan(rdev, false);
6292 }
6293
6294 static int nl80211_start_radar_detection(struct sk_buff *skb,
6295                                          struct genl_info *info)
6296 {
6297         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6298         struct net_device *dev = info->user_ptr[1];
6299         struct wireless_dev *wdev = dev->ieee80211_ptr;
6300         struct cfg80211_chan_def chandef;
6301         enum nl80211_dfs_regions dfs_region;
6302         unsigned int cac_time_ms;
6303         int err;
6304
6305         dfs_region = reg_get_dfs_region(wdev->wiphy);
6306         if (dfs_region == NL80211_DFS_UNSET)
6307                 return -EINVAL;
6308
6309         err = nl80211_parse_chandef(rdev, info, &chandef);
6310         if (err)
6311                 return err;
6312
6313         if (netif_carrier_ok(dev))
6314                 return -EBUSY;
6315
6316         if (wdev->cac_started)
6317                 return -EBUSY;
6318
6319         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6320                                             wdev->iftype);
6321         if (err < 0)
6322                 return err;
6323
6324         if (err == 0)
6325                 return -EINVAL;
6326
6327         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6328                 return -EINVAL;
6329
6330         if (!rdev->ops->start_radar_detection)
6331                 return -EOPNOTSUPP;
6332
6333         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6334         if (WARN_ON(!cac_time_ms))
6335                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6336
6337         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6338                                                cac_time_ms);
6339         if (!err) {
6340                 wdev->chandef = chandef;
6341                 wdev->cac_started = true;
6342                 wdev->cac_start_time = jiffies;
6343                 wdev->cac_time_ms = cac_time_ms;
6344         }
6345         return err;
6346 }
6347
6348 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6349 {
6350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6351         struct net_device *dev = info->user_ptr[1];
6352         struct wireless_dev *wdev = dev->ieee80211_ptr;
6353         struct cfg80211_csa_settings params;
6354         /* csa_attrs is defined static to avoid waste of stack size - this
6355          * function is called under RTNL lock, so this should not be a problem.
6356          */
6357         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6358         int err;
6359         bool need_new_beacon = false;
6360         int len, i;
6361         u32 cs_count;
6362
6363         if (!rdev->ops->channel_switch ||
6364             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6365                 return -EOPNOTSUPP;
6366
6367         switch (dev->ieee80211_ptr->iftype) {
6368         case NL80211_IFTYPE_AP:
6369         case NL80211_IFTYPE_P2P_GO:
6370                 need_new_beacon = true;
6371
6372                 /* useless if AP is not running */
6373                 if (!wdev->beacon_interval)
6374                         return -ENOTCONN;
6375                 break;
6376         case NL80211_IFTYPE_ADHOC:
6377                 if (!wdev->ssid_len)
6378                         return -ENOTCONN;
6379                 break;
6380         case NL80211_IFTYPE_MESH_POINT:
6381                 if (!wdev->mesh_id_len)
6382                         return -ENOTCONN;
6383                 break;
6384         default:
6385                 return -EOPNOTSUPP;
6386         }
6387
6388         memset(&params, 0, sizeof(params));
6389
6390         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6391             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6392                 return -EINVAL;
6393
6394         /* only important for AP, IBSS and mesh create IEs internally */
6395         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6396                 return -EINVAL;
6397
6398         /* Even though the attribute is u32, the specification says
6399          * u8, so let's make sure we don't overflow.
6400          */
6401         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6402         if (cs_count > 255)
6403                 return -EINVAL;
6404
6405         params.count = cs_count;
6406
6407         if (!need_new_beacon)
6408                 goto skip_beacons;
6409
6410         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6411         if (err)
6412                 return err;
6413
6414         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6415                                info->attrs[NL80211_ATTR_CSA_IES],
6416                                nl80211_policy);
6417         if (err)
6418                 return err;
6419
6420         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6421         if (err)
6422                 return err;
6423
6424         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6425                 return -EINVAL;
6426
6427         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6428         if (!len || (len % sizeof(u16)))
6429                 return -EINVAL;
6430
6431         params.n_counter_offsets_beacon = len / sizeof(u16);
6432         if (rdev->wiphy.max_num_csa_counters &&
6433             (params.n_counter_offsets_beacon >
6434              rdev->wiphy.max_num_csa_counters))
6435                 return -EINVAL;
6436
6437         params.counter_offsets_beacon =
6438                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6439
6440         /* sanity checks - counters should fit and be the same */
6441         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6442                 u16 offset = params.counter_offsets_beacon[i];
6443
6444                 if (offset >= params.beacon_csa.tail_len)
6445                         return -EINVAL;
6446
6447                 if (params.beacon_csa.tail[offset] != params.count)
6448                         return -EINVAL;
6449         }
6450
6451         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6452                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6453                 if (!len || (len % sizeof(u16)))
6454                         return -EINVAL;
6455
6456                 params.n_counter_offsets_presp = len / sizeof(u16);
6457                 if (rdev->wiphy.max_num_csa_counters &&
6458                     (params.n_counter_offsets_beacon >
6459                      rdev->wiphy.max_num_csa_counters))
6460                         return -EINVAL;
6461
6462                 params.counter_offsets_presp =
6463                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6464
6465                 /* sanity checks - counters should fit and be the same */
6466                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6467                         u16 offset = params.counter_offsets_presp[i];
6468
6469                         if (offset >= params.beacon_csa.probe_resp_len)
6470                                 return -EINVAL;
6471
6472                         if (params.beacon_csa.probe_resp[offset] !=
6473                             params.count)
6474                                 return -EINVAL;
6475                 }
6476         }
6477
6478 skip_beacons:
6479         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6480         if (err)
6481                 return err;
6482
6483         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6484                                      wdev->iftype))
6485                 return -EINVAL;
6486
6487         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6488                                             &params.chandef,
6489                                             wdev->iftype);
6490         if (err < 0)
6491                 return err;
6492
6493         if (err > 0)
6494                 params.radar_required = true;
6495
6496         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6497                 params.block_tx = true;
6498
6499         wdev_lock(wdev);
6500         err = rdev_channel_switch(rdev, dev, &params);
6501         wdev_unlock(wdev);
6502
6503         return err;
6504 }
6505
6506 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6507                             u32 seq, int flags,
6508                             struct cfg80211_registered_device *rdev,
6509                             struct wireless_dev *wdev,
6510                             struct cfg80211_internal_bss *intbss)
6511 {
6512         struct cfg80211_bss *res = &intbss->pub;
6513         const struct cfg80211_bss_ies *ies;
6514         void *hdr;
6515         struct nlattr *bss;
6516
6517         ASSERT_WDEV_LOCK(wdev);
6518
6519         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6520                              NL80211_CMD_NEW_SCAN_RESULTS);
6521         if (!hdr)
6522                 return -1;
6523
6524         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6525
6526         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6527                 goto nla_put_failure;
6528         if (wdev->netdev &&
6529             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6530                 goto nla_put_failure;
6531         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6532                 goto nla_put_failure;
6533
6534         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6535         if (!bss)
6536                 goto nla_put_failure;
6537         if ((!is_zero_ether_addr(res->bssid) &&
6538              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6539                 goto nla_put_failure;
6540
6541         rcu_read_lock();
6542         /* indicate whether we have probe response data or not */
6543         if (rcu_access_pointer(res->proberesp_ies) &&
6544             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6545                 goto fail_unlock_rcu;
6546
6547         /* this pointer prefers to be pointed to probe response data
6548          * but is always valid
6549          */
6550         ies = rcu_dereference(res->ies);
6551         if (ies) {
6552                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6553                         goto fail_unlock_rcu;
6554                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6555                                         ies->len, ies->data))
6556                         goto fail_unlock_rcu;
6557         }
6558
6559         /* and this pointer is always (unless driver didn't know) beacon data */
6560         ies = rcu_dereference(res->beacon_ies);
6561         if (ies && ies->from_beacon) {
6562                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6563                         goto fail_unlock_rcu;
6564                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6565                                         ies->len, ies->data))
6566                         goto fail_unlock_rcu;
6567         }
6568         rcu_read_unlock();
6569
6570         if (res->beacon_interval &&
6571             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6572                 goto nla_put_failure;
6573         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6574             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6575             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6576             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6577                         jiffies_to_msecs(jiffies - intbss->ts)))
6578                 goto nla_put_failure;
6579
6580         switch (rdev->wiphy.signal_type) {
6581         case CFG80211_SIGNAL_TYPE_MBM:
6582                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6583                         goto nla_put_failure;
6584                 break;
6585         case CFG80211_SIGNAL_TYPE_UNSPEC:
6586                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6587                         goto nla_put_failure;
6588                 break;
6589         default:
6590                 break;
6591         }
6592
6593         switch (wdev->iftype) {
6594         case NL80211_IFTYPE_P2P_CLIENT:
6595         case NL80211_IFTYPE_STATION:
6596                 if (intbss == wdev->current_bss &&
6597                     nla_put_u32(msg, NL80211_BSS_STATUS,
6598                                 NL80211_BSS_STATUS_ASSOCIATED))
6599                         goto nla_put_failure;
6600                 break;
6601         case NL80211_IFTYPE_ADHOC:
6602                 if (intbss == wdev->current_bss &&
6603                     nla_put_u32(msg, NL80211_BSS_STATUS,
6604                                 NL80211_BSS_STATUS_IBSS_JOINED))
6605                         goto nla_put_failure;
6606                 break;
6607         default:
6608                 break;
6609         }
6610
6611         nla_nest_end(msg, bss);
6612
6613         genlmsg_end(msg, hdr);
6614         return 0;
6615
6616  fail_unlock_rcu:
6617         rcu_read_unlock();
6618  nla_put_failure:
6619         genlmsg_cancel(msg, hdr);
6620         return -EMSGSIZE;
6621 }
6622
6623 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6624 {
6625         struct cfg80211_registered_device *rdev;
6626         struct cfg80211_internal_bss *scan;
6627         struct wireless_dev *wdev;
6628         int start = cb->args[2], idx = 0;
6629         int err;
6630
6631         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6632         if (err)
6633                 return err;
6634
6635         wdev_lock(wdev);
6636         spin_lock_bh(&rdev->bss_lock);
6637         cfg80211_bss_expire(rdev);
6638
6639         cb->seq = rdev->bss_generation;
6640
6641         list_for_each_entry(scan, &rdev->bss_list, list) {
6642                 if (++idx <= start)
6643                         continue;
6644                 if (nl80211_send_bss(skb, cb,
6645                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6646                                 rdev, wdev, scan) < 0) {
6647                         idx--;
6648                         break;
6649                 }
6650         }
6651
6652         spin_unlock_bh(&rdev->bss_lock);
6653         wdev_unlock(wdev);
6654
6655         cb->args[2] = idx;
6656         nl80211_finish_wdev_dump(rdev);
6657
6658         return skb->len;
6659 }
6660
6661 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6662                                int flags, struct net_device *dev,
6663                                bool allow_radio_stats,
6664                                struct survey_info *survey)
6665 {
6666         void *hdr;
6667         struct nlattr *infoattr;
6668
6669         /* skip radio stats if userspace didn't request them */
6670         if (!survey->channel && !allow_radio_stats)
6671                 return 0;
6672
6673         hdr = nl80211hdr_put(msg, portid, seq, flags,
6674                              NL80211_CMD_NEW_SURVEY_RESULTS);
6675         if (!hdr)
6676                 return -ENOMEM;
6677
6678         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6679                 goto nla_put_failure;
6680
6681         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6682         if (!infoattr)
6683                 goto nla_put_failure;
6684
6685         if (survey->channel &&
6686             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6687                         survey->channel->center_freq))
6688                 goto nla_put_failure;
6689
6690         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6691             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6692                 goto nla_put_failure;
6693         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6694             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6695                 goto nla_put_failure;
6696         if ((survey->filled & SURVEY_INFO_TIME) &&
6697             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6698                         survey->time))
6699                 goto nla_put_failure;
6700         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6701             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6702                         survey->time_busy))
6703                 goto nla_put_failure;
6704         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6705             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6706                         survey->time_ext_busy))
6707                 goto nla_put_failure;
6708         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6709             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6710                         survey->time_rx))
6711                 goto nla_put_failure;
6712         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6713             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6714                         survey->time_tx))
6715                 goto nla_put_failure;
6716         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6717             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6718                         survey->time_scan))
6719                 goto nla_put_failure;
6720
6721         nla_nest_end(msg, infoattr);
6722
6723         genlmsg_end(msg, hdr);
6724         return 0;
6725
6726  nla_put_failure:
6727         genlmsg_cancel(msg, hdr);
6728         return -EMSGSIZE;
6729 }
6730
6731 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6732 {
6733         struct survey_info survey;
6734         struct cfg80211_registered_device *rdev;
6735         struct wireless_dev *wdev;
6736         int survey_idx = cb->args[2];
6737         int res;
6738         bool radio_stats;
6739
6740         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6741         if (res)
6742                 return res;
6743
6744         /* prepare_wdev_dump parsed the attributes */
6745         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6746
6747         if (!wdev->netdev) {
6748                 res = -EINVAL;
6749                 goto out_err;
6750         }
6751
6752         if (!rdev->ops->dump_survey) {
6753                 res = -EOPNOTSUPP;
6754                 goto out_err;
6755         }
6756
6757         while (1) {
6758                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6759                 if (res == -ENOENT)
6760                         break;
6761                 if (res)
6762                         goto out_err;
6763
6764                 /* don't send disabled channels, but do send non-channel data */
6765                 if (survey.channel &&
6766                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6767                         survey_idx++;
6768                         continue;
6769                 }
6770
6771                 if (nl80211_send_survey(skb,
6772                                 NETLINK_CB(cb->skb).portid,
6773                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6774                                 wdev->netdev, radio_stats, &survey) < 0)
6775                         goto out;
6776                 survey_idx++;
6777         }
6778
6779  out:
6780         cb->args[2] = survey_idx;
6781         res = skb->len;
6782  out_err:
6783         nl80211_finish_wdev_dump(rdev);
6784         return res;
6785 }
6786
6787 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6788 {
6789         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6790                                   NL80211_WPA_VERSION_2));
6791 }
6792
6793 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6794 {
6795         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6796         struct net_device *dev = info->user_ptr[1];
6797         struct ieee80211_channel *chan;
6798         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6799         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6800         enum nl80211_auth_type auth_type;
6801         struct key_parse key;
6802         bool local_state_change;
6803
6804         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6805                 return -EINVAL;
6806
6807         if (!info->attrs[NL80211_ATTR_MAC])
6808                 return -EINVAL;
6809
6810         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6811                 return -EINVAL;
6812
6813         if (!info->attrs[NL80211_ATTR_SSID])
6814                 return -EINVAL;
6815
6816         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6817                 return -EINVAL;
6818
6819         err = nl80211_parse_key(info, &key);
6820         if (err)
6821                 return err;
6822
6823         if (key.idx >= 0) {
6824                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6825                         return -EINVAL;
6826                 if (!key.p.key || !key.p.key_len)
6827                         return -EINVAL;
6828                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6829                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6830                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6831                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6832                         return -EINVAL;
6833                 if (key.idx > 4)
6834                         return -EINVAL;
6835         } else {
6836                 key.p.key_len = 0;
6837                 key.p.key = NULL;
6838         }
6839
6840         if (key.idx >= 0) {
6841                 int i;
6842                 bool ok = false;
6843                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6844                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6845                                 ok = true;
6846                                 break;
6847                         }
6848                 }
6849                 if (!ok)
6850                         return -EINVAL;
6851         }
6852
6853         if (!rdev->ops->auth)
6854                 return -EOPNOTSUPP;
6855
6856         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6857             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6858                 return -EOPNOTSUPP;
6859
6860         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6861         chan = nl80211_get_valid_chan(&rdev->wiphy,
6862                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6863         if (!chan)
6864                 return -EINVAL;
6865
6866         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6867         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6868
6869         if (info->attrs[NL80211_ATTR_IE]) {
6870                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6871                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6872         }
6873
6874         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6875         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6876                 return -EINVAL;
6877
6878         if (auth_type == NL80211_AUTHTYPE_SAE &&
6879             !info->attrs[NL80211_ATTR_SAE_DATA])
6880                 return -EINVAL;
6881
6882         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6883                 if (auth_type != NL80211_AUTHTYPE_SAE)
6884                         return -EINVAL;
6885                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6886                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6887                 /* need to include at least Auth Transaction and Status Code */
6888                 if (sae_data_len < 4)
6889                         return -EINVAL;
6890         }
6891
6892         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6893
6894         /*
6895          * Since we no longer track auth state, ignore
6896          * requests to only change local state.
6897          */
6898         if (local_state_change)
6899                 return 0;
6900
6901         wdev_lock(dev->ieee80211_ptr);
6902         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6903                                  ssid, ssid_len, ie, ie_len,
6904                                  key.p.key, key.p.key_len, key.idx,
6905                                  sae_data, sae_data_len);
6906         wdev_unlock(dev->ieee80211_ptr);
6907         return err;
6908 }
6909
6910 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6911                                    struct genl_info *info,
6912                                    struct cfg80211_crypto_settings *settings,
6913                                    int cipher_limit)
6914 {
6915         memset(settings, 0, sizeof(*settings));
6916
6917         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6918
6919         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6920                 u16 proto;
6921                 proto = nla_get_u16(
6922                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6923                 settings->control_port_ethertype = cpu_to_be16(proto);
6924                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6925                     proto != ETH_P_PAE)
6926                         return -EINVAL;
6927                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6928                         settings->control_port_no_encrypt = true;
6929         } else
6930                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6931
6932         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6933                 void *data;
6934                 int len, i;
6935
6936                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6937                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6938                 settings->n_ciphers_pairwise = len / sizeof(u32);
6939
6940                 if (len % sizeof(u32))
6941                         return -EINVAL;
6942
6943                 if (settings->n_ciphers_pairwise > cipher_limit)
6944                         return -EINVAL;
6945
6946                 memcpy(settings->ciphers_pairwise, data, len);
6947
6948                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6949                         if (!cfg80211_supported_cipher_suite(
6950                                         &rdev->wiphy,
6951                                         settings->ciphers_pairwise[i]))
6952                                 return -EINVAL;
6953         }
6954
6955         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6956                 settings->cipher_group =
6957                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6958                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6959                                                      settings->cipher_group))
6960                         return -EINVAL;
6961         }
6962
6963         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6964                 settings->wpa_versions =
6965                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6966                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6967                         return -EINVAL;
6968         }
6969
6970         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6971                 void *data;
6972                 int len;
6973
6974                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6975                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6976                 settings->n_akm_suites = len / sizeof(u32);
6977
6978                 if (len % sizeof(u32))
6979                         return -EINVAL;
6980
6981                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6982                         return -EINVAL;
6983
6984                 memcpy(settings->akm_suites, data, len);
6985         }
6986
6987         return 0;
6988 }
6989
6990 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6991 {
6992         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6993         struct net_device *dev = info->user_ptr[1];
6994         struct ieee80211_channel *chan;
6995         struct cfg80211_assoc_request req = {};
6996         const u8 *bssid, *ssid;
6997         int err, ssid_len = 0;
6998
6999         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7000                 return -EINVAL;
7001
7002         if (!info->attrs[NL80211_ATTR_MAC] ||
7003             !info->attrs[NL80211_ATTR_SSID] ||
7004             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7005                 return -EINVAL;
7006
7007         if (!rdev->ops->assoc)
7008                 return -EOPNOTSUPP;
7009
7010         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7011             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7012                 return -EOPNOTSUPP;
7013
7014         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7015
7016         chan = nl80211_get_valid_chan(&rdev->wiphy,
7017                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7018         if (!chan)
7019                 return -EINVAL;
7020
7021         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7022         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7023
7024         if (info->attrs[NL80211_ATTR_IE]) {
7025                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7026                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7027         }
7028
7029         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7030                 enum nl80211_mfp mfp =
7031                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7032                 if (mfp == NL80211_MFP_REQUIRED)
7033                         req.use_mfp = true;
7034                 else if (mfp != NL80211_MFP_NO)
7035                         return -EINVAL;
7036         }
7037
7038         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7039                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7040
7041         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7042                 req.flags |= ASSOC_REQ_DISABLE_HT;
7043
7044         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7045                 memcpy(&req.ht_capa_mask,
7046                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7047                        sizeof(req.ht_capa_mask));
7048
7049         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7050                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7051                         return -EINVAL;
7052                 memcpy(&req.ht_capa,
7053                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7054                        sizeof(req.ht_capa));
7055         }
7056
7057         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7058                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7059
7060         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7061                 memcpy(&req.vht_capa_mask,
7062                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7063                        sizeof(req.vht_capa_mask));
7064
7065         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7066                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7067                         return -EINVAL;
7068                 memcpy(&req.vht_capa,
7069                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7070                        sizeof(req.vht_capa));
7071         }
7072
7073         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7074                 if (!(rdev->wiphy.features &
7075                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7076                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7077                         return -EINVAL;
7078                 req.flags |= ASSOC_REQ_USE_RRM;
7079         }
7080
7081         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7082         if (!err) {
7083                 wdev_lock(dev->ieee80211_ptr);
7084                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7085                                           ssid, ssid_len, &req);
7086                 wdev_unlock(dev->ieee80211_ptr);
7087         }
7088
7089         return err;
7090 }
7091
7092 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7093 {
7094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7095         struct net_device *dev = info->user_ptr[1];
7096         const u8 *ie = NULL, *bssid;
7097         int ie_len = 0, err;
7098         u16 reason_code;
7099         bool local_state_change;
7100
7101         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7102                 return -EINVAL;
7103
7104         if (!info->attrs[NL80211_ATTR_MAC])
7105                 return -EINVAL;
7106
7107         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7108                 return -EINVAL;
7109
7110         if (!rdev->ops->deauth)
7111                 return -EOPNOTSUPP;
7112
7113         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7114             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7115                 return -EOPNOTSUPP;
7116
7117         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7118
7119         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7120         if (reason_code == 0) {
7121                 /* Reason Code 0 is reserved */
7122                 return -EINVAL;
7123         }
7124
7125         if (info->attrs[NL80211_ATTR_IE]) {
7126                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7127                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7128         }
7129
7130         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7131
7132         wdev_lock(dev->ieee80211_ptr);
7133         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7134                                    local_state_change);
7135         wdev_unlock(dev->ieee80211_ptr);
7136         return err;
7137 }
7138
7139 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7140 {
7141         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7142         struct net_device *dev = info->user_ptr[1];
7143         const u8 *ie = NULL, *bssid;
7144         int ie_len = 0, err;
7145         u16 reason_code;
7146         bool local_state_change;
7147
7148         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7149                 return -EINVAL;
7150
7151         if (!info->attrs[NL80211_ATTR_MAC])
7152                 return -EINVAL;
7153
7154         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7155                 return -EINVAL;
7156
7157         if (!rdev->ops->disassoc)
7158                 return -EOPNOTSUPP;
7159
7160         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7161             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7162                 return -EOPNOTSUPP;
7163
7164         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7165
7166         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7167         if (reason_code == 0) {
7168                 /* Reason Code 0 is reserved */
7169                 return -EINVAL;
7170         }
7171
7172         if (info->attrs[NL80211_ATTR_IE]) {
7173                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7174                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7175         }
7176
7177         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7178
7179         wdev_lock(dev->ieee80211_ptr);
7180         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7181                                      local_state_change);
7182         wdev_unlock(dev->ieee80211_ptr);
7183         return err;
7184 }
7185
7186 static bool
7187 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7188                          int mcast_rate[IEEE80211_NUM_BANDS],
7189                          int rateval)
7190 {
7191         struct wiphy *wiphy = &rdev->wiphy;
7192         bool found = false;
7193         int band, i;
7194
7195         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7196                 struct ieee80211_supported_band *sband;
7197
7198                 sband = wiphy->bands[band];
7199                 if (!sband)
7200                         continue;
7201
7202                 for (i = 0; i < sband->n_bitrates; i++) {
7203                         if (sband->bitrates[i].bitrate == rateval) {
7204                                 mcast_rate[band] = i + 1;
7205                                 found = true;
7206                                 break;
7207                         }
7208                 }
7209         }
7210
7211         return found;
7212 }
7213
7214 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7215 {
7216         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7217         struct net_device *dev = info->user_ptr[1];
7218         struct cfg80211_ibss_params ibss;
7219         struct wiphy *wiphy;
7220         struct cfg80211_cached_keys *connkeys = NULL;
7221         int err;
7222
7223         memset(&ibss, 0, sizeof(ibss));
7224
7225         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7226                 return -EINVAL;
7227
7228         if (!info->attrs[NL80211_ATTR_SSID] ||
7229             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7230                 return -EINVAL;
7231
7232         ibss.beacon_interval = 100;
7233
7234         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7235                 ibss.beacon_interval =
7236                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7237                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7238                         return -EINVAL;
7239         }
7240
7241         if (!rdev->ops->join_ibss)
7242                 return -EOPNOTSUPP;
7243
7244         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7245                 return -EOPNOTSUPP;
7246
7247         wiphy = &rdev->wiphy;
7248
7249         if (info->attrs[NL80211_ATTR_MAC]) {
7250                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7251
7252                 if (!is_valid_ether_addr(ibss.bssid))
7253                         return -EINVAL;
7254         }
7255         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7256         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7257
7258         if (info->attrs[NL80211_ATTR_IE]) {
7259                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7260                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7261         }
7262
7263         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7264         if (err)
7265                 return err;
7266
7267         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7268                                      NL80211_IFTYPE_ADHOC))
7269                 return -EINVAL;
7270
7271         switch (ibss.chandef.width) {
7272         case NL80211_CHAN_WIDTH_5:
7273         case NL80211_CHAN_WIDTH_10:
7274         case NL80211_CHAN_WIDTH_20_NOHT:
7275                 break;
7276         case NL80211_CHAN_WIDTH_20:
7277         case NL80211_CHAN_WIDTH_40:
7278                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7279                         break;
7280         default:
7281                 return -EINVAL;
7282         }
7283
7284         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7285         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7286
7287         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7288                 u8 *rates =
7289                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7290                 int n_rates =
7291                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7292                 struct ieee80211_supported_band *sband =
7293                         wiphy->bands[ibss.chandef.chan->band];
7294
7295                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7296                                              &ibss.basic_rates);
7297                 if (err)
7298                         return err;
7299         }
7300
7301         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7302                 memcpy(&ibss.ht_capa_mask,
7303                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7304                        sizeof(ibss.ht_capa_mask));
7305
7306         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7307                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7308                         return -EINVAL;
7309                 memcpy(&ibss.ht_capa,
7310                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7311                        sizeof(ibss.ht_capa));
7312         }
7313
7314         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7315             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7316                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7317                 return -EINVAL;
7318
7319         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7320                 bool no_ht = false;
7321
7322                 connkeys = nl80211_parse_connkeys(rdev,
7323                                           info->attrs[NL80211_ATTR_KEYS],
7324                                           &no_ht);
7325                 if (IS_ERR(connkeys))
7326                         return PTR_ERR(connkeys);
7327
7328                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7329                     no_ht) {
7330                         kfree(connkeys);
7331                         return -EINVAL;
7332                 }
7333         }
7334
7335         ibss.control_port =
7336                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7337
7338         ibss.userspace_handles_dfs =
7339                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7340
7341         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7342         if (err)
7343                 kzfree(connkeys);
7344         return err;
7345 }
7346
7347 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7348 {
7349         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7350         struct net_device *dev = info->user_ptr[1];
7351
7352         if (!rdev->ops->leave_ibss)
7353                 return -EOPNOTSUPP;
7354
7355         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7356                 return -EOPNOTSUPP;
7357
7358         return cfg80211_leave_ibss(rdev, dev, false);
7359 }
7360
7361 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7362 {
7363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7364         struct net_device *dev = info->user_ptr[1];
7365         int mcast_rate[IEEE80211_NUM_BANDS];
7366         u32 nla_rate;
7367         int err;
7368
7369         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7370             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7371                 return -EOPNOTSUPP;
7372
7373         if (!rdev->ops->set_mcast_rate)
7374                 return -EOPNOTSUPP;
7375
7376         memset(mcast_rate, 0, sizeof(mcast_rate));
7377
7378         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7379                 return -EINVAL;
7380
7381         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7382         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7383                 return -EINVAL;
7384
7385         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7386
7387         return err;
7388 }
7389
7390 static struct sk_buff *
7391 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7392                             int approxlen, u32 portid, u32 seq,
7393                             enum nl80211_commands cmd,
7394                             enum nl80211_attrs attr,
7395                             const struct nl80211_vendor_cmd_info *info,
7396                             gfp_t gfp)
7397 {
7398         struct sk_buff *skb;
7399         void *hdr;
7400         struct nlattr *data;
7401
7402         skb = nlmsg_new(approxlen + 100, gfp);
7403         if (!skb)
7404                 return NULL;
7405
7406         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7407         if (!hdr) {
7408                 kfree_skb(skb);
7409                 return NULL;
7410         }
7411
7412         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7413                 goto nla_put_failure;
7414
7415         if (info) {
7416                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7417                                 info->vendor_id))
7418                         goto nla_put_failure;
7419                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7420                                 info->subcmd))
7421                         goto nla_put_failure;
7422         }
7423
7424         data = nla_nest_start(skb, attr);
7425
7426         ((void **)skb->cb)[0] = rdev;
7427         ((void **)skb->cb)[1] = hdr;
7428         ((void **)skb->cb)[2] = data;
7429
7430         return skb;
7431
7432  nla_put_failure:
7433         kfree_skb(skb);
7434         return NULL;
7435 }
7436
7437 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7438                                            enum nl80211_commands cmd,
7439                                            enum nl80211_attrs attr,
7440                                            int vendor_event_idx,
7441                                            int approxlen, gfp_t gfp)
7442 {
7443         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7444         const struct nl80211_vendor_cmd_info *info;
7445
7446         switch (cmd) {
7447         case NL80211_CMD_TESTMODE:
7448                 if (WARN_ON(vendor_event_idx != -1))
7449                         return NULL;
7450                 info = NULL;
7451                 break;
7452         case NL80211_CMD_VENDOR:
7453                 if (WARN_ON(vendor_event_idx < 0 ||
7454                             vendor_event_idx >= wiphy->n_vendor_events))
7455                         return NULL;
7456                 info = &wiphy->vendor_events[vendor_event_idx];
7457                 break;
7458         default:
7459                 WARN_ON(1);
7460                 return NULL;
7461         }
7462
7463         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7464                                            cmd, attr, info, gfp);
7465 }
7466 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7467
7468 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7469 {
7470         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7471         void *hdr = ((void **)skb->cb)[1];
7472         struct nlattr *data = ((void **)skb->cb)[2];
7473         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7474
7475         /* clear CB data for netlink core to own from now on */
7476         memset(skb->cb, 0, sizeof(skb->cb));
7477
7478         nla_nest_end(skb, data);
7479         genlmsg_end(skb, hdr);
7480
7481         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7482                 mcgrp = NL80211_MCGRP_VENDOR;
7483
7484         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7485                                 mcgrp, gfp);
7486 }
7487 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7488
7489 #ifdef CONFIG_NL80211_TESTMODE
7490 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7491 {
7492         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7493         struct wireless_dev *wdev =
7494                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7495         int err;
7496
7497         if (!rdev->ops->testmode_cmd)
7498                 return -EOPNOTSUPP;
7499
7500         if (IS_ERR(wdev)) {
7501                 err = PTR_ERR(wdev);
7502                 if (err != -EINVAL)
7503                         return err;
7504                 wdev = NULL;
7505         } else if (wdev->wiphy != &rdev->wiphy) {
7506                 return -EINVAL;
7507         }
7508
7509         if (!info->attrs[NL80211_ATTR_TESTDATA])
7510                 return -EINVAL;
7511
7512         rdev->cur_cmd_info = info;
7513         err = rdev_testmode_cmd(rdev, wdev,
7514                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7515                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7516         rdev->cur_cmd_info = NULL;
7517
7518         return err;
7519 }
7520
7521 static int nl80211_testmode_dump(struct sk_buff *skb,
7522                                  struct netlink_callback *cb)
7523 {
7524         struct cfg80211_registered_device *rdev;
7525         int err;
7526         long phy_idx;
7527         void *data = NULL;
7528         int data_len = 0;
7529
7530         rtnl_lock();
7531
7532         if (cb->args[0]) {
7533                 /*
7534                  * 0 is a valid index, but not valid for args[0],
7535                  * so we need to offset by 1.
7536                  */
7537                 phy_idx = cb->args[0] - 1;
7538         } else {
7539                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7540                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7541                                   nl80211_policy);
7542                 if (err)
7543                         goto out_err;
7544
7545                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7546                                                   nl80211_fam.attrbuf);
7547                 if (IS_ERR(rdev)) {
7548                         err = PTR_ERR(rdev);
7549                         goto out_err;
7550                 }
7551                 phy_idx = rdev->wiphy_idx;
7552                 rdev = NULL;
7553
7554                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7555                         cb->args[1] =
7556                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7557         }
7558
7559         if (cb->args[1]) {
7560                 data = nla_data((void *)cb->args[1]);
7561                 data_len = nla_len((void *)cb->args[1]);
7562         }
7563
7564         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7565         if (!rdev) {
7566                 err = -ENOENT;
7567                 goto out_err;
7568         }
7569
7570         if (!rdev->ops->testmode_dump) {
7571                 err = -EOPNOTSUPP;
7572                 goto out_err;
7573         }
7574
7575         while (1) {
7576                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7577                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7578                                            NL80211_CMD_TESTMODE);
7579                 struct nlattr *tmdata;
7580
7581                 if (!hdr)
7582                         break;
7583
7584                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7585                         genlmsg_cancel(skb, hdr);
7586                         break;
7587                 }
7588
7589                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7590                 if (!tmdata) {
7591                         genlmsg_cancel(skb, hdr);
7592                         break;
7593                 }
7594                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7595                 nla_nest_end(skb, tmdata);
7596
7597                 if (err == -ENOBUFS || err == -ENOENT) {
7598                         genlmsg_cancel(skb, hdr);
7599                         break;
7600                 } else if (err) {
7601                         genlmsg_cancel(skb, hdr);
7602                         goto out_err;
7603                 }
7604
7605                 genlmsg_end(skb, hdr);
7606         }
7607
7608         err = skb->len;
7609         /* see above */
7610         cb->args[0] = phy_idx + 1;
7611  out_err:
7612         rtnl_unlock();
7613         return err;
7614 }
7615 #endif
7616
7617 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7618 {
7619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7620         struct net_device *dev = info->user_ptr[1];
7621         struct cfg80211_connect_params connect;
7622         struct wiphy *wiphy;
7623         struct cfg80211_cached_keys *connkeys = NULL;
7624         int err;
7625
7626         memset(&connect, 0, sizeof(connect));
7627
7628         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7629                 return -EINVAL;
7630
7631         if (!info->attrs[NL80211_ATTR_SSID] ||
7632             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7633                 return -EINVAL;
7634
7635         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7636                 connect.auth_type =
7637                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7638                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7639                                              NL80211_CMD_CONNECT))
7640                         return -EINVAL;
7641         } else
7642                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7643
7644         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7645
7646         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7647                                       NL80211_MAX_NR_CIPHER_SUITES);
7648         if (err)
7649                 return err;
7650
7651         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7652             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7653                 return -EOPNOTSUPP;
7654
7655         wiphy = &rdev->wiphy;
7656
7657         connect.bg_scan_period = -1;
7658         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7659                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7660                 connect.bg_scan_period =
7661                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7662         }
7663
7664         if (info->attrs[NL80211_ATTR_MAC])
7665                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7666         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7667                 connect.bssid_hint =
7668                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7669         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7670         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7671
7672         if (info->attrs[NL80211_ATTR_IE]) {
7673                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7674                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7675         }
7676
7677         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7678                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7679                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7680                     connect.mfp != NL80211_MFP_NO)
7681                         return -EINVAL;
7682         } else {
7683                 connect.mfp = NL80211_MFP_NO;
7684         }
7685
7686         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7687                 connect.channel = nl80211_get_valid_chan(
7688                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7689                 if (!connect.channel)
7690                         return -EINVAL;
7691         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7692                 connect.channel_hint = nl80211_get_valid_chan(
7693                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7694                 if (!connect.channel_hint)
7695                         return -EINVAL;
7696         }
7697
7698         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7699                 connkeys = nl80211_parse_connkeys(rdev,
7700                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7701                 if (IS_ERR(connkeys))
7702                         return PTR_ERR(connkeys);
7703         }
7704
7705         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7706                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7707
7708         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7709                 memcpy(&connect.ht_capa_mask,
7710                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7711                        sizeof(connect.ht_capa_mask));
7712
7713         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7714                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7715                         kzfree(connkeys);
7716                         return -EINVAL;
7717                 }
7718                 memcpy(&connect.ht_capa,
7719                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7720                        sizeof(connect.ht_capa));
7721         }
7722
7723         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7724                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7725
7726         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7727                 memcpy(&connect.vht_capa_mask,
7728                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7729                        sizeof(connect.vht_capa_mask));
7730
7731         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7732                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7733                         kzfree(connkeys);
7734                         return -EINVAL;
7735                 }
7736                 memcpy(&connect.vht_capa,
7737                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7738                        sizeof(connect.vht_capa));
7739         }
7740
7741         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7742                 if (!(rdev->wiphy.features &
7743                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7744                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7745                         return -EINVAL;
7746                 connect.flags |= ASSOC_REQ_USE_RRM;
7747         }
7748
7749         wdev_lock(dev->ieee80211_ptr);
7750         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7751         wdev_unlock(dev->ieee80211_ptr);
7752         if (err)
7753                 kzfree(connkeys);
7754         return err;
7755 }
7756
7757 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7758 {
7759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7760         struct net_device *dev = info->user_ptr[1];
7761         u16 reason;
7762         int ret;
7763
7764         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7765                 reason = WLAN_REASON_DEAUTH_LEAVING;
7766         else
7767                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7768
7769         if (reason == 0)
7770                 return -EINVAL;
7771
7772         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7773             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7774                 return -EOPNOTSUPP;
7775
7776         wdev_lock(dev->ieee80211_ptr);
7777         ret = cfg80211_disconnect(rdev, dev, reason, true);
7778         wdev_unlock(dev->ieee80211_ptr);
7779         return ret;
7780 }
7781
7782 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7783 {
7784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7785         struct net *net;
7786         int err;
7787
7788         if (info->attrs[NL80211_ATTR_PID]) {
7789                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7790
7791                 net = get_net_ns_by_pid(pid);
7792         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
7793                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
7794
7795                 net = get_net_ns_by_fd(fd);
7796         } else {
7797                 return -EINVAL;
7798         }
7799
7800         if (IS_ERR(net))
7801                 return PTR_ERR(net);
7802
7803         err = 0;
7804
7805         /* check if anything to do */
7806         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7807                 err = cfg80211_switch_netns(rdev, net);
7808
7809         put_net(net);
7810         return err;
7811 }
7812
7813 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7814 {
7815         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7816         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7817                         struct cfg80211_pmksa *pmksa) = NULL;
7818         struct net_device *dev = info->user_ptr[1];
7819         struct cfg80211_pmksa pmksa;
7820
7821         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7822
7823         if (!info->attrs[NL80211_ATTR_MAC])
7824                 return -EINVAL;
7825
7826         if (!info->attrs[NL80211_ATTR_PMKID])
7827                 return -EINVAL;
7828
7829         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7830         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7831
7832         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7833             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7834                 return -EOPNOTSUPP;
7835
7836         switch (info->genlhdr->cmd) {
7837         case NL80211_CMD_SET_PMKSA:
7838                 rdev_ops = rdev->ops->set_pmksa;
7839                 break;
7840         case NL80211_CMD_DEL_PMKSA:
7841                 rdev_ops = rdev->ops->del_pmksa;
7842                 break;
7843         default:
7844                 WARN_ON(1);
7845                 break;
7846         }
7847
7848         if (!rdev_ops)
7849                 return -EOPNOTSUPP;
7850
7851         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7852 }
7853
7854 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7855 {
7856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7857         struct net_device *dev = info->user_ptr[1];
7858
7859         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7860             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7861                 return -EOPNOTSUPP;
7862
7863         if (!rdev->ops->flush_pmksa)
7864                 return -EOPNOTSUPP;
7865
7866         return rdev_flush_pmksa(rdev, dev);
7867 }
7868
7869 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7870 {
7871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7872         struct net_device *dev = info->user_ptr[1];
7873         u8 action_code, dialog_token;
7874         u32 peer_capability = 0;
7875         u16 status_code;
7876         u8 *peer;
7877         bool initiator;
7878
7879         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7880             !rdev->ops->tdls_mgmt)
7881                 return -EOPNOTSUPP;
7882
7883         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7884             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7885             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7886             !info->attrs[NL80211_ATTR_IE] ||
7887             !info->attrs[NL80211_ATTR_MAC])
7888                 return -EINVAL;
7889
7890         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7891         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7892         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7893         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7894         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7895         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7896                 peer_capability =
7897                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7898
7899         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7900                               dialog_token, status_code, peer_capability,
7901                               initiator,
7902                               nla_data(info->attrs[NL80211_ATTR_IE]),
7903                               nla_len(info->attrs[NL80211_ATTR_IE]));
7904 }
7905
7906 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7907 {
7908         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7909         struct net_device *dev = info->user_ptr[1];
7910         enum nl80211_tdls_operation operation;
7911         u8 *peer;
7912
7913         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7914             !rdev->ops->tdls_oper)
7915                 return -EOPNOTSUPP;
7916
7917         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7918             !info->attrs[NL80211_ATTR_MAC])
7919                 return -EINVAL;
7920
7921         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7922         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7923
7924         return rdev_tdls_oper(rdev, dev, peer, operation);
7925 }
7926
7927 static int nl80211_remain_on_channel(struct sk_buff *skb,
7928                                      struct genl_info *info)
7929 {
7930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7931         struct wireless_dev *wdev = info->user_ptr[1];
7932         struct cfg80211_chan_def chandef;
7933         struct sk_buff *msg;
7934         void *hdr;
7935         u64 cookie;
7936         u32 duration;
7937         int err;
7938
7939         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7940             !info->attrs[NL80211_ATTR_DURATION])
7941                 return -EINVAL;
7942
7943         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7944
7945         if (!rdev->ops->remain_on_channel ||
7946             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7947                 return -EOPNOTSUPP;
7948
7949         /*
7950          * We should be on that channel for at least a minimum amount of
7951          * time (10ms) but no longer than the driver supports.
7952          */
7953         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7954             duration > rdev->wiphy.max_remain_on_channel_duration)
7955                 return -EINVAL;
7956
7957         err = nl80211_parse_chandef(rdev, info, &chandef);
7958         if (err)
7959                 return err;
7960
7961         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7962         if (!msg)
7963                 return -ENOMEM;
7964
7965         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7966                              NL80211_CMD_REMAIN_ON_CHANNEL);
7967         if (!hdr) {
7968                 err = -ENOBUFS;
7969                 goto free_msg;
7970         }
7971
7972         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7973                                      duration, &cookie);
7974
7975         if (err)
7976                 goto free_msg;
7977
7978         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7979                 goto nla_put_failure;
7980
7981         genlmsg_end(msg, hdr);
7982
7983         return genlmsg_reply(msg, info);
7984
7985  nla_put_failure:
7986         err = -ENOBUFS;
7987  free_msg:
7988         nlmsg_free(msg);
7989         return err;
7990 }
7991
7992 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7993                                             struct genl_info *info)
7994 {
7995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7996         struct wireless_dev *wdev = info->user_ptr[1];
7997         u64 cookie;
7998
7999         if (!info->attrs[NL80211_ATTR_COOKIE])
8000                 return -EINVAL;
8001
8002         if (!rdev->ops->cancel_remain_on_channel)
8003                 return -EOPNOTSUPP;
8004
8005         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8006
8007         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8008 }
8009
8010 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8011                            u8 *rates, u8 rates_len)
8012 {
8013         u8 i;
8014         u32 mask = 0;
8015
8016         for (i = 0; i < rates_len; i++) {
8017                 int rate = (rates[i] & 0x7f) * 5;
8018                 int ridx;
8019                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8020                         struct ieee80211_rate *srate =
8021                                 &sband->bitrates[ridx];
8022                         if (rate == srate->bitrate) {
8023                                 mask |= 1 << ridx;
8024                                 break;
8025                         }
8026                 }
8027                 if (ridx == sband->n_bitrates)
8028                         return 0; /* rate not found */
8029         }
8030
8031         return mask;
8032 }
8033
8034 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8035                                u8 *rates, u8 rates_len,
8036                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8037 {
8038         u8 i;
8039
8040         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8041
8042         for (i = 0; i < rates_len; i++) {
8043                 int ridx, rbit;
8044
8045                 ridx = rates[i] / 8;
8046                 rbit = BIT(rates[i] % 8);
8047
8048                 /* check validity */
8049                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8050                         return false;
8051
8052                 /* check availability */
8053                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8054                         mcs[ridx] |= rbit;
8055                 else
8056                         return false;
8057         }
8058
8059         return true;
8060 }
8061
8062 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8063 {
8064         u16 mcs_mask = 0;
8065
8066         switch (vht_mcs_map) {
8067         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8068                 break;
8069         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8070                 mcs_mask = 0x00FF;
8071                 break;
8072         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8073                 mcs_mask = 0x01FF;
8074                 break;
8075         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8076                 mcs_mask = 0x03FF;
8077                 break;
8078         default:
8079                 break;
8080         }
8081
8082         return mcs_mask;
8083 }
8084
8085 static void vht_build_mcs_mask(u16 vht_mcs_map,
8086                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8087 {
8088         u8 nss;
8089
8090         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8091                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8092                 vht_mcs_map >>= 2;
8093         }
8094 }
8095
8096 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8097                              struct nl80211_txrate_vht *txrate,
8098                              u16 mcs[NL80211_VHT_NSS_MAX])
8099 {
8100         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8101         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8102         u8 i;
8103
8104         if (!sband->vht_cap.vht_supported)
8105                 return false;
8106
8107         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8108
8109         /* Build vht_mcs_mask from VHT capabilities */
8110         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8111
8112         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8113                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8114                         mcs[i] = txrate->mcs[i];
8115                 else
8116                         return false;
8117         }
8118
8119         return true;
8120 }
8121
8122 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8123         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8124                                     .len = NL80211_MAX_SUPP_RATES },
8125         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8126                                 .len = NL80211_MAX_SUPP_HT_RATES },
8127         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8128         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8129 };
8130
8131 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8132                                        struct genl_info *info)
8133 {
8134         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8135         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8136         struct cfg80211_bitrate_mask mask;
8137         int rem, i;
8138         struct net_device *dev = info->user_ptr[1];
8139         struct nlattr *tx_rates;
8140         struct ieee80211_supported_band *sband;
8141         u16 vht_tx_mcs_map;
8142
8143         if (!rdev->ops->set_bitrate_mask)
8144                 return -EOPNOTSUPP;
8145
8146         memset(&mask, 0, sizeof(mask));
8147         /* Default to all rates enabled */
8148         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8149                 sband = rdev->wiphy.bands[i];
8150
8151                 if (!sband)
8152                         continue;
8153
8154                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8155                 memcpy(mask.control[i].ht_mcs,
8156                        sband->ht_cap.mcs.rx_mask,
8157                        sizeof(mask.control[i].ht_mcs));
8158
8159                 if (!sband->vht_cap.vht_supported)
8160                         continue;
8161
8162                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8163                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8164         }
8165
8166         /* if no rates are given set it back to the defaults */
8167         if (!info->attrs[NL80211_ATTR_TX_RATES])
8168                 goto out;
8169
8170         /*
8171          * The nested attribute uses enum nl80211_band as the index. This maps
8172          * directly to the enum ieee80211_band values used in cfg80211.
8173          */
8174         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8175         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8176                 enum ieee80211_band band = nla_type(tx_rates);
8177                 int err;
8178
8179                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8180                         return -EINVAL;
8181                 sband = rdev->wiphy.bands[band];
8182                 if (sband == NULL)
8183                         return -EINVAL;
8184                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8185                                 nla_len(tx_rates), nl80211_txattr_policy);
8186                 if (err)
8187                         return err;
8188                 if (tb[NL80211_TXRATE_LEGACY]) {
8189                         mask.control[band].legacy = rateset_to_mask(
8190                                 sband,
8191                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8192                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8193                         if ((mask.control[band].legacy == 0) &&
8194                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8195                                 return -EINVAL;
8196                 }
8197                 if (tb[NL80211_TXRATE_HT]) {
8198                         if (!ht_rateset_to_mask(
8199                                         sband,
8200                                         nla_data(tb[NL80211_TXRATE_HT]),
8201                                         nla_len(tb[NL80211_TXRATE_HT]),
8202                                         mask.control[band].ht_mcs))
8203                                 return -EINVAL;
8204                 }
8205                 if (tb[NL80211_TXRATE_VHT]) {
8206                         if (!vht_set_mcs_mask(
8207                                         sband,
8208                                         nla_data(tb[NL80211_TXRATE_VHT]),
8209                                         mask.control[band].vht_mcs))
8210                                 return -EINVAL;
8211                 }
8212                 if (tb[NL80211_TXRATE_GI]) {
8213                         mask.control[band].gi =
8214                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8215                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8216                                 return -EINVAL;
8217                 }
8218
8219                 if (mask.control[band].legacy == 0) {
8220                         /* don't allow empty legacy rates if HT or VHT
8221                          * are not even supported.
8222                          */
8223                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8224                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8225                                 return -EINVAL;
8226
8227                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8228                                 if (mask.control[band].ht_mcs[i])
8229                                         goto out;
8230
8231                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8232                                 if (mask.control[band].vht_mcs[i])
8233                                         goto out;
8234
8235                         /* legacy and mcs rates may not be both empty */
8236                         return -EINVAL;
8237                 }
8238         }
8239
8240 out:
8241         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8242 }
8243
8244 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8245 {
8246         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8247         struct wireless_dev *wdev = info->user_ptr[1];
8248         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8249
8250         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8251                 return -EINVAL;
8252
8253         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8254                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8255
8256         switch (wdev->iftype) {
8257         case NL80211_IFTYPE_STATION:
8258         case NL80211_IFTYPE_ADHOC:
8259         case NL80211_IFTYPE_P2P_CLIENT:
8260         case NL80211_IFTYPE_AP:
8261         case NL80211_IFTYPE_AP_VLAN:
8262         case NL80211_IFTYPE_MESH_POINT:
8263         case NL80211_IFTYPE_P2P_GO:
8264         case NL80211_IFTYPE_P2P_DEVICE:
8265                 break;
8266         default:
8267                 return -EOPNOTSUPP;
8268         }
8269
8270         /* not much point in registering if we can't reply */
8271         if (!rdev->ops->mgmt_tx)
8272                 return -EOPNOTSUPP;
8273
8274         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8275                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8276                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8277 }
8278
8279 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8280 {
8281         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8282         struct wireless_dev *wdev = info->user_ptr[1];
8283         struct cfg80211_chan_def chandef;
8284         int err;
8285         void *hdr = NULL;
8286         u64 cookie;
8287         struct sk_buff *msg = NULL;
8288         struct cfg80211_mgmt_tx_params params = {
8289                 .dont_wait_for_ack =
8290                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8291         };
8292
8293         if (!info->attrs[NL80211_ATTR_FRAME])
8294                 return -EINVAL;
8295
8296         if (!rdev->ops->mgmt_tx)
8297                 return -EOPNOTSUPP;
8298
8299         switch (wdev->iftype) {
8300         case NL80211_IFTYPE_P2P_DEVICE:
8301                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8302                         return -EINVAL;
8303         case NL80211_IFTYPE_STATION:
8304         case NL80211_IFTYPE_ADHOC:
8305         case NL80211_IFTYPE_P2P_CLIENT:
8306         case NL80211_IFTYPE_AP:
8307         case NL80211_IFTYPE_AP_VLAN:
8308         case NL80211_IFTYPE_MESH_POINT:
8309         case NL80211_IFTYPE_P2P_GO:
8310                 break;
8311         default:
8312                 return -EOPNOTSUPP;
8313         }
8314
8315         if (info->attrs[NL80211_ATTR_DURATION]) {
8316                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8317                         return -EINVAL;
8318                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8319
8320                 /*
8321                  * We should wait on the channel for at least a minimum amount
8322                  * of time (10ms) but no longer than the driver supports.
8323                  */
8324                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8325                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8326                         return -EINVAL;
8327
8328         }
8329
8330         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8331
8332         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8333                 return -EINVAL;
8334
8335         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8336
8337         /* get the channel if any has been specified, otherwise pass NULL to
8338          * the driver. The latter will use the current one
8339          */
8340         chandef.chan = NULL;
8341         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8342                 err = nl80211_parse_chandef(rdev, info, &chandef);
8343                 if (err)
8344                         return err;
8345         }
8346
8347         if (!chandef.chan && params.offchan)
8348                 return -EINVAL;
8349
8350         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8351         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8352
8353         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8354                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8355                 int i;
8356
8357                 if (len % sizeof(u16))
8358                         return -EINVAL;
8359
8360                 params.n_csa_offsets = len / sizeof(u16);
8361                 params.csa_offsets =
8362                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8363
8364                 /* check that all the offsets fit the frame */
8365                 for (i = 0; i < params.n_csa_offsets; i++) {
8366                         if (params.csa_offsets[i] >= params.len)
8367                                 return -EINVAL;
8368                 }
8369         }
8370
8371         if (!params.dont_wait_for_ack) {
8372                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8373                 if (!msg)
8374                         return -ENOMEM;
8375
8376                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8377                                      NL80211_CMD_FRAME);
8378                 if (!hdr) {
8379                         err = -ENOBUFS;
8380                         goto free_msg;
8381                 }
8382         }
8383
8384         params.chan = chandef.chan;
8385         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8386         if (err)
8387                 goto free_msg;
8388
8389         if (msg) {
8390                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8391                         goto nla_put_failure;
8392
8393                 genlmsg_end(msg, hdr);
8394                 return genlmsg_reply(msg, info);
8395         }
8396
8397         return 0;
8398
8399  nla_put_failure:
8400         err = -ENOBUFS;
8401  free_msg:
8402         nlmsg_free(msg);
8403         return err;
8404 }
8405
8406 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8407 {
8408         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8409         struct wireless_dev *wdev = info->user_ptr[1];
8410         u64 cookie;
8411
8412         if (!info->attrs[NL80211_ATTR_COOKIE])
8413                 return -EINVAL;
8414
8415         if (!rdev->ops->mgmt_tx_cancel_wait)
8416                 return -EOPNOTSUPP;
8417
8418         switch (wdev->iftype) {
8419         case NL80211_IFTYPE_STATION:
8420         case NL80211_IFTYPE_ADHOC:
8421         case NL80211_IFTYPE_P2P_CLIENT:
8422         case NL80211_IFTYPE_AP:
8423         case NL80211_IFTYPE_AP_VLAN:
8424         case NL80211_IFTYPE_P2P_GO:
8425         case NL80211_IFTYPE_P2P_DEVICE:
8426                 break;
8427         default:
8428                 return -EOPNOTSUPP;
8429         }
8430
8431         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8432
8433         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8434 }
8435
8436 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8437 {
8438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8439         struct wireless_dev *wdev;
8440         struct net_device *dev = info->user_ptr[1];
8441         u8 ps_state;
8442         bool state;
8443         int err;
8444
8445         if (!info->attrs[NL80211_ATTR_PS_STATE])
8446                 return -EINVAL;
8447
8448         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8449
8450         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8451                 return -EINVAL;
8452
8453         wdev = dev->ieee80211_ptr;
8454
8455         if (!rdev->ops->set_power_mgmt)
8456                 return -EOPNOTSUPP;
8457
8458         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8459
8460         if (state == wdev->ps)
8461                 return 0;
8462
8463         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8464         if (!err)
8465                 wdev->ps = state;
8466         return err;
8467 }
8468
8469 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8470 {
8471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8472         enum nl80211_ps_state ps_state;
8473         struct wireless_dev *wdev;
8474         struct net_device *dev = info->user_ptr[1];
8475         struct sk_buff *msg;
8476         void *hdr;
8477         int err;
8478
8479         wdev = dev->ieee80211_ptr;
8480
8481         if (!rdev->ops->set_power_mgmt)
8482                 return -EOPNOTSUPP;
8483
8484         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8485         if (!msg)
8486                 return -ENOMEM;
8487
8488         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8489                              NL80211_CMD_GET_POWER_SAVE);
8490         if (!hdr) {
8491                 err = -ENOBUFS;
8492                 goto free_msg;
8493         }
8494
8495         if (wdev->ps)
8496                 ps_state = NL80211_PS_ENABLED;
8497         else
8498                 ps_state = NL80211_PS_DISABLED;
8499
8500         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8501                 goto nla_put_failure;
8502
8503         genlmsg_end(msg, hdr);
8504         return genlmsg_reply(msg, info);
8505
8506  nla_put_failure:
8507         err = -ENOBUFS;
8508  free_msg:
8509         nlmsg_free(msg);
8510         return err;
8511 }
8512
8513 static const struct nla_policy
8514 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8515         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8516         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8517         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8518         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8519         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8520         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8521 };
8522
8523 static int nl80211_set_cqm_txe(struct genl_info *info,
8524                                u32 rate, u32 pkts, u32 intvl)
8525 {
8526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8527         struct net_device *dev = info->user_ptr[1];
8528         struct wireless_dev *wdev = dev->ieee80211_ptr;
8529
8530         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8531                 return -EINVAL;
8532
8533         if (!rdev->ops->set_cqm_txe_config)
8534                 return -EOPNOTSUPP;
8535
8536         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8537             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8538                 return -EOPNOTSUPP;
8539
8540         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8541 }
8542
8543 static int nl80211_set_cqm_rssi(struct genl_info *info,
8544                                 s32 threshold, u32 hysteresis)
8545 {
8546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8547         struct net_device *dev = info->user_ptr[1];
8548         struct wireless_dev *wdev = dev->ieee80211_ptr;
8549
8550         if (threshold > 0)
8551                 return -EINVAL;
8552
8553         /* disabling - hysteresis should also be zero then */
8554         if (threshold == 0)
8555                 hysteresis = 0;
8556
8557         if (!rdev->ops->set_cqm_rssi_config)
8558                 return -EOPNOTSUPP;
8559
8560         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8561             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8562                 return -EOPNOTSUPP;
8563
8564         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8565 }
8566
8567 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8568 {
8569         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8570         struct nlattr *cqm;
8571         int err;
8572
8573         cqm = info->attrs[NL80211_ATTR_CQM];
8574         if (!cqm)
8575                 return -EINVAL;
8576
8577         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8578                                nl80211_attr_cqm_policy);
8579         if (err)
8580                 return err;
8581
8582         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8583             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8584                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8585                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8586
8587                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8588         }
8589
8590         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8591             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8592             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8593                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8594                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8595                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8596
8597                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8598         }
8599
8600         return -EINVAL;
8601 }
8602
8603 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8604 {
8605         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8606         struct net_device *dev = info->user_ptr[1];
8607         struct ocb_setup setup = {};
8608         int err;
8609
8610         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8611         if (err)
8612                 return err;
8613
8614         return cfg80211_join_ocb(rdev, dev, &setup);
8615 }
8616
8617 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8618 {
8619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8620         struct net_device *dev = info->user_ptr[1];
8621
8622         return cfg80211_leave_ocb(rdev, dev);
8623 }
8624
8625 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8626 {
8627         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8628         struct net_device *dev = info->user_ptr[1];
8629         struct mesh_config cfg;
8630         struct mesh_setup setup;
8631         int err;
8632
8633         /* start with default */
8634         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8635         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8636
8637         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8638                 /* and parse parameters if given */
8639                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8640                 if (err)
8641                         return err;
8642         }
8643
8644         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8645             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8646                 return -EINVAL;
8647
8648         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8649         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8650
8651         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8652             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8653                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8654                         return -EINVAL;
8655
8656         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8657                 setup.beacon_interval =
8658                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8659                 if (setup.beacon_interval < 10 ||
8660                     setup.beacon_interval > 10000)
8661                         return -EINVAL;
8662         }
8663
8664         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8665                 setup.dtim_period =
8666                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8667                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8668                         return -EINVAL;
8669         }
8670
8671         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8672                 /* parse additional setup parameters if given */
8673                 err = nl80211_parse_mesh_setup(info, &setup);
8674                 if (err)
8675                         return err;
8676         }
8677
8678         if (setup.user_mpm)
8679                 cfg.auto_open_plinks = false;
8680
8681         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8682                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8683                 if (err)
8684                         return err;
8685         } else {
8686                 /* cfg80211_join_mesh() will sort it out */
8687                 setup.chandef.chan = NULL;
8688         }
8689
8690         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8691                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8692                 int n_rates =
8693                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8694                 struct ieee80211_supported_band *sband;
8695
8696                 if (!setup.chandef.chan)
8697                         return -EINVAL;
8698
8699                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8700
8701                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8702                                              &setup.basic_rates);
8703                 if (err)
8704                         return err;
8705         }
8706
8707         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8708 }
8709
8710 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8711 {
8712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8713         struct net_device *dev = info->user_ptr[1];
8714
8715         return cfg80211_leave_mesh(rdev, dev);
8716 }
8717
8718 #ifdef CONFIG_PM
8719 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8720                                         struct cfg80211_registered_device *rdev)
8721 {
8722         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8723         struct nlattr *nl_pats, *nl_pat;
8724         int i, pat_len;
8725
8726         if (!wowlan->n_patterns)
8727                 return 0;
8728
8729         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8730         if (!nl_pats)
8731                 return -ENOBUFS;
8732
8733         for (i = 0; i < wowlan->n_patterns; i++) {
8734                 nl_pat = nla_nest_start(msg, i + 1);
8735                 if (!nl_pat)
8736                         return -ENOBUFS;
8737                 pat_len = wowlan->patterns[i].pattern_len;
8738                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8739                             wowlan->patterns[i].mask) ||
8740                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8741                             wowlan->patterns[i].pattern) ||
8742                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8743                                 wowlan->patterns[i].pkt_offset))
8744                         return -ENOBUFS;
8745                 nla_nest_end(msg, nl_pat);
8746         }
8747         nla_nest_end(msg, nl_pats);
8748
8749         return 0;
8750 }
8751
8752 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8753                                    struct cfg80211_wowlan_tcp *tcp)
8754 {
8755         struct nlattr *nl_tcp;
8756
8757         if (!tcp)
8758                 return 0;
8759
8760         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8761         if (!nl_tcp)
8762                 return -ENOBUFS;
8763
8764         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8765             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8766             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8767             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8768             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8769             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8770                     tcp->payload_len, tcp->payload) ||
8771             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8772                         tcp->data_interval) ||
8773             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8774                     tcp->wake_len, tcp->wake_data) ||
8775             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8776                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8777                 return -ENOBUFS;
8778
8779         if (tcp->payload_seq.len &&
8780             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8781                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8782                 return -ENOBUFS;
8783
8784         if (tcp->payload_tok.len &&
8785             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8786                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8787                     &tcp->payload_tok))
8788                 return -ENOBUFS;
8789
8790         nla_nest_end(msg, nl_tcp);
8791
8792         return 0;
8793 }
8794
8795 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8796                                   struct cfg80211_sched_scan_request *req)
8797 {
8798         struct nlattr *nd, *freqs, *matches, *match;
8799         int i;
8800
8801         if (!req)
8802                 return 0;
8803
8804         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8805         if (!nd)
8806                 return -ENOBUFS;
8807
8808         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8809                 return -ENOBUFS;
8810
8811         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8812         if (!freqs)
8813                 return -ENOBUFS;
8814
8815         for (i = 0; i < req->n_channels; i++)
8816                 nla_put_u32(msg, i, req->channels[i]->center_freq);
8817
8818         nla_nest_end(msg, freqs);
8819
8820         if (req->n_match_sets) {
8821                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8822                 for (i = 0; i < req->n_match_sets; i++) {
8823                         match = nla_nest_start(msg, i);
8824                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8825                                 req->match_sets[i].ssid.ssid_len,
8826                                 req->match_sets[i].ssid.ssid);
8827                         nla_nest_end(msg, match);
8828                 }
8829                 nla_nest_end(msg, matches);
8830         }
8831
8832         nla_nest_end(msg, nd);
8833
8834         return 0;
8835 }
8836
8837 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8838 {
8839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8840         struct sk_buff *msg;
8841         void *hdr;
8842         u32 size = NLMSG_DEFAULT_SIZE;
8843
8844         if (!rdev->wiphy.wowlan)
8845                 return -EOPNOTSUPP;
8846
8847         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8848                 /* adjust size to have room for all the data */
8849                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8850                         rdev->wiphy.wowlan_config->tcp->payload_len +
8851                         rdev->wiphy.wowlan_config->tcp->wake_len +
8852                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8853         }
8854
8855         msg = nlmsg_new(size, GFP_KERNEL);
8856         if (!msg)
8857                 return -ENOMEM;
8858
8859         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8860                              NL80211_CMD_GET_WOWLAN);
8861         if (!hdr)
8862                 goto nla_put_failure;
8863
8864         if (rdev->wiphy.wowlan_config) {
8865                 struct nlattr *nl_wowlan;
8866
8867                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8868                 if (!nl_wowlan)
8869                         goto nla_put_failure;
8870
8871                 if ((rdev->wiphy.wowlan_config->any &&
8872                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8873                     (rdev->wiphy.wowlan_config->disconnect &&
8874                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8875                     (rdev->wiphy.wowlan_config->magic_pkt &&
8876                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8877                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8878                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8879                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8880                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8881                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8882                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8883                     (rdev->wiphy.wowlan_config->rfkill_release &&
8884                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8885                         goto nla_put_failure;
8886
8887                 if (nl80211_send_wowlan_patterns(msg, rdev))
8888                         goto nla_put_failure;
8889
8890                 if (nl80211_send_wowlan_tcp(msg,
8891                                             rdev->wiphy.wowlan_config->tcp))
8892                         goto nla_put_failure;
8893
8894                 if (nl80211_send_wowlan_nd(
8895                             msg,
8896                             rdev->wiphy.wowlan_config->nd_config))
8897                         goto nla_put_failure;
8898
8899                 nla_nest_end(msg, nl_wowlan);
8900         }
8901
8902         genlmsg_end(msg, hdr);
8903         return genlmsg_reply(msg, info);
8904
8905 nla_put_failure:
8906         nlmsg_free(msg);
8907         return -ENOBUFS;
8908 }
8909
8910 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8911                                     struct nlattr *attr,
8912                                     struct cfg80211_wowlan *trig)
8913 {
8914         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8915         struct cfg80211_wowlan_tcp *cfg;
8916         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8917         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8918         u32 size;
8919         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8920         int err, port;
8921
8922         if (!rdev->wiphy.wowlan->tcp)
8923                 return -EINVAL;
8924
8925         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8926                         nla_data(attr), nla_len(attr),
8927                         nl80211_wowlan_tcp_policy);
8928         if (err)
8929                 return err;
8930
8931         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8932             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8933             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8934             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8935             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8936             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8937             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8938             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8939                 return -EINVAL;
8940
8941         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8942         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8943                 return -EINVAL;
8944
8945         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8946                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8947             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8948                 return -EINVAL;
8949
8950         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8951         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8952                 return -EINVAL;
8953
8954         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8955         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8956                 return -EINVAL;
8957
8958         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8959                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8960
8961                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8962                 tokens_size = tokln - sizeof(*tok);
8963
8964                 if (!tok->len || tokens_size % tok->len)
8965                         return -EINVAL;
8966                 if (!rdev->wiphy.wowlan->tcp->tok)
8967                         return -EINVAL;
8968                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8969                         return -EINVAL;
8970                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8971                         return -EINVAL;
8972                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8973                         return -EINVAL;
8974                 if (tok->offset + tok->len > data_size)
8975                         return -EINVAL;
8976         }
8977
8978         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8979                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8980                 if (!rdev->wiphy.wowlan->tcp->seq)
8981                         return -EINVAL;
8982                 if (seq->len == 0 || seq->len > 4)
8983                         return -EINVAL;
8984                 if (seq->len + seq->offset > data_size)
8985                         return -EINVAL;
8986         }
8987
8988         size = sizeof(*cfg);
8989         size += data_size;
8990         size += wake_size + wake_mask_size;
8991         size += tokens_size;
8992
8993         cfg = kzalloc(size, GFP_KERNEL);
8994         if (!cfg)
8995                 return -ENOMEM;
8996         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8997         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8998         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8999                ETH_ALEN);
9000         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9001                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9002         else
9003                 port = 0;
9004 #ifdef CONFIG_INET
9005         /* allocate a socket and port for it and use it */
9006         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9007                             IPPROTO_TCP, &cfg->sock, 1);
9008         if (err) {
9009                 kfree(cfg);
9010                 return err;
9011         }
9012         if (inet_csk_get_port(cfg->sock->sk, port)) {
9013                 sock_release(cfg->sock);
9014                 kfree(cfg);
9015                 return -EADDRINUSE;
9016         }
9017         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9018 #else
9019         if (!port) {
9020                 kfree(cfg);
9021                 return -EINVAL;
9022         }
9023         cfg->src_port = port;
9024 #endif
9025
9026         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9027         cfg->payload_len = data_size;
9028         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9029         memcpy((void *)cfg->payload,
9030                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9031                data_size);
9032         if (seq)
9033                 cfg->payload_seq = *seq;
9034         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9035         cfg->wake_len = wake_size;
9036         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9037         memcpy((void *)cfg->wake_data,
9038                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9039                wake_size);
9040         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9041                          data_size + wake_size;
9042         memcpy((void *)cfg->wake_mask,
9043                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9044                wake_mask_size);
9045         if (tok) {
9046                 cfg->tokens_size = tokens_size;
9047                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9048         }
9049
9050         trig->tcp = cfg;
9051
9052         return 0;
9053 }
9054
9055 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9056                                    const struct wiphy_wowlan_support *wowlan,
9057                                    struct nlattr *attr,
9058                                    struct cfg80211_wowlan *trig)
9059 {
9060         struct nlattr **tb;
9061         int err;
9062
9063         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9064         if (!tb)
9065                 return -ENOMEM;
9066
9067         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9068                 err = -EOPNOTSUPP;
9069                 goto out;
9070         }
9071
9072         err = nla_parse(tb, NL80211_ATTR_MAX,
9073                         nla_data(attr), nla_len(attr),
9074                         nl80211_policy);
9075         if (err)
9076                 goto out;
9077
9078         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9079         err = PTR_ERR_OR_ZERO(trig->nd_config);
9080         if (err)
9081                 trig->nd_config = NULL;
9082
9083 out:
9084         kfree(tb);
9085         return err;
9086 }
9087
9088 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9089 {
9090         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9091         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9092         struct cfg80211_wowlan new_triggers = {};
9093         struct cfg80211_wowlan *ntrig;
9094         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9095         int err, i;
9096         bool prev_enabled = rdev->wiphy.wowlan_config;
9097
9098         if (!wowlan)
9099                 return -EOPNOTSUPP;
9100
9101         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9102                 cfg80211_rdev_free_wowlan(rdev);
9103                 rdev->wiphy.wowlan_config = NULL;
9104                 goto set_wakeup;
9105         }
9106
9107         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9108                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9109                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9110                         nl80211_wowlan_policy);
9111         if (err)
9112                 return err;
9113
9114         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9115                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9116                         return -EINVAL;
9117                 new_triggers.any = true;
9118         }
9119
9120         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9121                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9122                         return -EINVAL;
9123                 new_triggers.disconnect = true;
9124         }
9125
9126         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9127                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9128                         return -EINVAL;
9129                 new_triggers.magic_pkt = true;
9130         }
9131
9132         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9133                 return -EINVAL;
9134
9135         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9136                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9137                         return -EINVAL;
9138                 new_triggers.gtk_rekey_failure = true;
9139         }
9140
9141         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9142                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9143                         return -EINVAL;
9144                 new_triggers.eap_identity_req = true;
9145         }
9146
9147         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9148                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9149                         return -EINVAL;
9150                 new_triggers.four_way_handshake = true;
9151         }
9152
9153         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9154                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9155                         return -EINVAL;
9156                 new_triggers.rfkill_release = true;
9157         }
9158
9159         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9160                 struct nlattr *pat;
9161                 int n_patterns = 0;
9162                 int rem, pat_len, mask_len, pkt_offset;
9163                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9164
9165                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9166                                     rem)
9167                         n_patterns++;
9168                 if (n_patterns > wowlan->n_patterns)
9169                         return -EINVAL;
9170
9171                 new_triggers.patterns = kcalloc(n_patterns,
9172                                                 sizeof(new_triggers.patterns[0]),
9173                                                 GFP_KERNEL);
9174                 if (!new_triggers.patterns)
9175                         return -ENOMEM;
9176
9177                 new_triggers.n_patterns = n_patterns;
9178                 i = 0;
9179
9180                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9181                                     rem) {
9182                         u8 *mask_pat;
9183
9184                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9185                                   nla_len(pat), NULL);
9186                         err = -EINVAL;
9187                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9188                             !pat_tb[NL80211_PKTPAT_PATTERN])
9189                                 goto error;
9190                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9191                         mask_len = DIV_ROUND_UP(pat_len, 8);
9192                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9193                                 goto error;
9194                         if (pat_len > wowlan->pattern_max_len ||
9195                             pat_len < wowlan->pattern_min_len)
9196                                 goto error;
9197
9198                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9199                                 pkt_offset = 0;
9200                         else
9201                                 pkt_offset = nla_get_u32(
9202                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9203                         if (pkt_offset > wowlan->max_pkt_offset)
9204                                 goto error;
9205                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9206
9207                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9208                         if (!mask_pat) {
9209                                 err = -ENOMEM;
9210                                 goto error;
9211                         }
9212                         new_triggers.patterns[i].mask = mask_pat;
9213                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9214                                mask_len);
9215                         mask_pat += mask_len;
9216                         new_triggers.patterns[i].pattern = mask_pat;
9217                         new_triggers.patterns[i].pattern_len = pat_len;
9218                         memcpy(mask_pat,
9219                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9220                                pat_len);
9221                         i++;
9222                 }
9223         }
9224
9225         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9226                 err = nl80211_parse_wowlan_tcp(
9227                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9228                         &new_triggers);
9229                 if (err)
9230                         goto error;
9231         }
9232
9233         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9234                 err = nl80211_parse_wowlan_nd(
9235                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9236                         &new_triggers);
9237                 if (err)
9238                         goto error;
9239         }
9240
9241         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9242         if (!ntrig) {
9243                 err = -ENOMEM;
9244                 goto error;
9245         }
9246         cfg80211_rdev_free_wowlan(rdev);
9247         rdev->wiphy.wowlan_config = ntrig;
9248
9249  set_wakeup:
9250         if (rdev->ops->set_wakeup &&
9251             prev_enabled != !!rdev->wiphy.wowlan_config)
9252                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9253
9254         return 0;
9255  error:
9256         for (i = 0; i < new_triggers.n_patterns; i++)
9257                 kfree(new_triggers.patterns[i].mask);
9258         kfree(new_triggers.patterns);
9259         if (new_triggers.tcp && new_triggers.tcp->sock)
9260                 sock_release(new_triggers.tcp->sock);
9261         kfree(new_triggers.tcp);
9262         return err;
9263 }
9264 #endif
9265
9266 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9267                                        struct cfg80211_registered_device *rdev)
9268 {
9269         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9270         int i, j, pat_len;
9271         struct cfg80211_coalesce_rules *rule;
9272
9273         if (!rdev->coalesce->n_rules)
9274                 return 0;
9275
9276         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9277         if (!nl_rules)
9278                 return -ENOBUFS;
9279
9280         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9281                 nl_rule = nla_nest_start(msg, i + 1);
9282                 if (!nl_rule)
9283                         return -ENOBUFS;
9284
9285                 rule = &rdev->coalesce->rules[i];
9286                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9287                                 rule->delay))
9288                         return -ENOBUFS;
9289
9290                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9291                                 rule->condition))
9292                         return -ENOBUFS;
9293
9294                 nl_pats = nla_nest_start(msg,
9295                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9296                 if (!nl_pats)
9297                         return -ENOBUFS;
9298
9299                 for (j = 0; j < rule->n_patterns; j++) {
9300                         nl_pat = nla_nest_start(msg, j + 1);
9301                         if (!nl_pat)
9302                                 return -ENOBUFS;
9303                         pat_len = rule->patterns[j].pattern_len;
9304                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9305                                     DIV_ROUND_UP(pat_len, 8),
9306                                     rule->patterns[j].mask) ||
9307                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9308                                     rule->patterns[j].pattern) ||
9309                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9310                                         rule->patterns[j].pkt_offset))
9311                                 return -ENOBUFS;
9312                         nla_nest_end(msg, nl_pat);
9313                 }
9314                 nla_nest_end(msg, nl_pats);
9315                 nla_nest_end(msg, nl_rule);
9316         }
9317         nla_nest_end(msg, nl_rules);
9318
9319         return 0;
9320 }
9321
9322 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9323 {
9324         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9325         struct sk_buff *msg;
9326         void *hdr;
9327
9328         if (!rdev->wiphy.coalesce)
9329                 return -EOPNOTSUPP;
9330
9331         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9332         if (!msg)
9333                 return -ENOMEM;
9334
9335         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9336                              NL80211_CMD_GET_COALESCE);
9337         if (!hdr)
9338                 goto nla_put_failure;
9339
9340         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9341                 goto nla_put_failure;
9342
9343         genlmsg_end(msg, hdr);
9344         return genlmsg_reply(msg, info);
9345
9346 nla_put_failure:
9347         nlmsg_free(msg);
9348         return -ENOBUFS;
9349 }
9350
9351 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9352 {
9353         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9354         int i, j;
9355         struct cfg80211_coalesce_rules *rule;
9356
9357         if (!coalesce)
9358                 return;
9359
9360         for (i = 0; i < coalesce->n_rules; i++) {
9361                 rule = &coalesce->rules[i];
9362                 for (j = 0; j < rule->n_patterns; j++)
9363                         kfree(rule->patterns[j].mask);
9364                 kfree(rule->patterns);
9365         }
9366         kfree(coalesce->rules);
9367         kfree(coalesce);
9368         rdev->coalesce = NULL;
9369 }
9370
9371 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9372                                        struct nlattr *rule,
9373                                        struct cfg80211_coalesce_rules *new_rule)
9374 {
9375         int err, i;
9376         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9377         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9378         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9379         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9380
9381         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9382                         nla_len(rule), nl80211_coalesce_policy);
9383         if (err)
9384                 return err;
9385
9386         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9387                 new_rule->delay =
9388                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9389         if (new_rule->delay > coalesce->max_delay)
9390                 return -EINVAL;
9391
9392         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9393                 new_rule->condition =
9394                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9395         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9396             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9397                 return -EINVAL;
9398
9399         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9400                 return -EINVAL;
9401
9402         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9403                             rem)
9404                 n_patterns++;
9405         if (n_patterns > coalesce->n_patterns)
9406                 return -EINVAL;
9407
9408         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9409                                      GFP_KERNEL);
9410         if (!new_rule->patterns)
9411                 return -ENOMEM;
9412
9413         new_rule->n_patterns = n_patterns;
9414         i = 0;
9415
9416         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9417                             rem) {
9418                 u8 *mask_pat;
9419
9420                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9421                           nla_len(pat), NULL);
9422                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9423                     !pat_tb[NL80211_PKTPAT_PATTERN])
9424                         return -EINVAL;
9425                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9426                 mask_len = DIV_ROUND_UP(pat_len, 8);
9427                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9428                         return -EINVAL;
9429                 if (pat_len > coalesce->pattern_max_len ||
9430                     pat_len < coalesce->pattern_min_len)
9431                         return -EINVAL;
9432
9433                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9434                         pkt_offset = 0;
9435                 else
9436                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9437                 if (pkt_offset > coalesce->max_pkt_offset)
9438                         return -EINVAL;
9439                 new_rule->patterns[i].pkt_offset = pkt_offset;
9440
9441                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9442                 if (!mask_pat)
9443                         return -ENOMEM;
9444
9445                 new_rule->patterns[i].mask = mask_pat;
9446                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9447                        mask_len);
9448
9449                 mask_pat += mask_len;
9450                 new_rule->patterns[i].pattern = mask_pat;
9451                 new_rule->patterns[i].pattern_len = pat_len;
9452                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9453                        pat_len);
9454                 i++;
9455         }
9456
9457         return 0;
9458 }
9459
9460 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9461 {
9462         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9463         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9464         struct cfg80211_coalesce new_coalesce = {};
9465         struct cfg80211_coalesce *n_coalesce;
9466         int err, rem_rule, n_rules = 0, i, j;
9467         struct nlattr *rule;
9468         struct cfg80211_coalesce_rules *tmp_rule;
9469
9470         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9471                 return -EOPNOTSUPP;
9472
9473         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9474                 cfg80211_rdev_free_coalesce(rdev);
9475                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9476                 return 0;
9477         }
9478
9479         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9480                             rem_rule)
9481                 n_rules++;
9482         if (n_rules > coalesce->n_rules)
9483                 return -EINVAL;
9484
9485         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9486                                      GFP_KERNEL);
9487         if (!new_coalesce.rules)
9488                 return -ENOMEM;
9489
9490         new_coalesce.n_rules = n_rules;
9491         i = 0;
9492
9493         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9494                             rem_rule) {
9495                 err = nl80211_parse_coalesce_rule(rdev, rule,
9496                                                   &new_coalesce.rules[i]);
9497                 if (err)
9498                         goto error;
9499
9500                 i++;
9501         }
9502
9503         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9504         if (err)
9505                 goto error;
9506
9507         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9508         if (!n_coalesce) {
9509                 err = -ENOMEM;
9510                 goto error;
9511         }
9512         cfg80211_rdev_free_coalesce(rdev);
9513         rdev->coalesce = n_coalesce;
9514
9515         return 0;
9516 error:
9517         for (i = 0; i < new_coalesce.n_rules; i++) {
9518                 tmp_rule = &new_coalesce.rules[i];
9519                 for (j = 0; j < tmp_rule->n_patterns; j++)
9520                         kfree(tmp_rule->patterns[j].mask);
9521                 kfree(tmp_rule->patterns);
9522         }
9523         kfree(new_coalesce.rules);
9524
9525         return err;
9526 }
9527
9528 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9529 {
9530         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9531         struct net_device *dev = info->user_ptr[1];
9532         struct wireless_dev *wdev = dev->ieee80211_ptr;
9533         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9534         struct cfg80211_gtk_rekey_data rekey_data;
9535         int err;
9536
9537         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9538                 return -EINVAL;
9539
9540         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9541                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9542                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9543                         nl80211_rekey_policy);
9544         if (err)
9545                 return err;
9546
9547         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9548                 return -ERANGE;
9549         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9550                 return -ERANGE;
9551         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9552                 return -ERANGE;
9553
9554         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9555         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9556         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9557
9558         wdev_lock(wdev);
9559         if (!wdev->current_bss) {
9560                 err = -ENOTCONN;
9561                 goto out;
9562         }
9563
9564         if (!rdev->ops->set_rekey_data) {
9565                 err = -EOPNOTSUPP;
9566                 goto out;
9567         }
9568
9569         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9570  out:
9571         wdev_unlock(wdev);
9572         return err;
9573 }
9574
9575 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9576                                              struct genl_info *info)
9577 {
9578         struct net_device *dev = info->user_ptr[1];
9579         struct wireless_dev *wdev = dev->ieee80211_ptr;
9580
9581         if (wdev->iftype != NL80211_IFTYPE_AP &&
9582             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9583                 return -EINVAL;
9584
9585         if (wdev->ap_unexpected_nlportid)
9586                 return -EBUSY;
9587
9588         wdev->ap_unexpected_nlportid = info->snd_portid;
9589         return 0;
9590 }
9591
9592 static int nl80211_probe_client(struct sk_buff *skb,
9593                                 struct genl_info *info)
9594 {
9595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9596         struct net_device *dev = info->user_ptr[1];
9597         struct wireless_dev *wdev = dev->ieee80211_ptr;
9598         struct sk_buff *msg;
9599         void *hdr;
9600         const u8 *addr;
9601         u64 cookie;
9602         int err;
9603
9604         if (wdev->iftype != NL80211_IFTYPE_AP &&
9605             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9606                 return -EOPNOTSUPP;
9607
9608         if (!info->attrs[NL80211_ATTR_MAC])
9609                 return -EINVAL;
9610
9611         if (!rdev->ops->probe_client)
9612                 return -EOPNOTSUPP;
9613
9614         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9615         if (!msg)
9616                 return -ENOMEM;
9617
9618         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9619                              NL80211_CMD_PROBE_CLIENT);
9620         if (!hdr) {
9621                 err = -ENOBUFS;
9622                 goto free_msg;
9623         }
9624
9625         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9626
9627         err = rdev_probe_client(rdev, dev, addr, &cookie);
9628         if (err)
9629                 goto free_msg;
9630
9631         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9632                 goto nla_put_failure;
9633
9634         genlmsg_end(msg, hdr);
9635
9636         return genlmsg_reply(msg, info);
9637
9638  nla_put_failure:
9639         err = -ENOBUFS;
9640  free_msg:
9641         nlmsg_free(msg);
9642         return err;
9643 }
9644
9645 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9646 {
9647         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9648         struct cfg80211_beacon_registration *reg, *nreg;
9649         int rv;
9650
9651         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9652                 return -EOPNOTSUPP;
9653
9654         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9655         if (!nreg)
9656                 return -ENOMEM;
9657
9658         /* First, check if already registered. */
9659         spin_lock_bh(&rdev->beacon_registrations_lock);
9660         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9661                 if (reg->nlportid == info->snd_portid) {
9662                         rv = -EALREADY;
9663                         goto out_err;
9664                 }
9665         }
9666         /* Add it to the list */
9667         nreg->nlportid = info->snd_portid;
9668         list_add(&nreg->list, &rdev->beacon_registrations);
9669
9670         spin_unlock_bh(&rdev->beacon_registrations_lock);
9671
9672         return 0;
9673 out_err:
9674         spin_unlock_bh(&rdev->beacon_registrations_lock);
9675         kfree(nreg);
9676         return rv;
9677 }
9678
9679 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9680 {
9681         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9682         struct wireless_dev *wdev = info->user_ptr[1];
9683         int err;
9684
9685         if (!rdev->ops->start_p2p_device)
9686                 return -EOPNOTSUPP;
9687
9688         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9689                 return -EOPNOTSUPP;
9690
9691         if (wdev->p2p_started)
9692                 return 0;
9693
9694         if (rfkill_blocked(rdev->rfkill))
9695                 return -ERFKILL;
9696
9697         err = rdev_start_p2p_device(rdev, wdev);
9698         if (err)
9699                 return err;
9700
9701         wdev->p2p_started = true;
9702         rdev->opencount++;
9703
9704         return 0;
9705 }
9706
9707 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9708 {
9709         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9710         struct wireless_dev *wdev = info->user_ptr[1];
9711
9712         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9713                 return -EOPNOTSUPP;
9714
9715         if (!rdev->ops->stop_p2p_device)
9716                 return -EOPNOTSUPP;
9717
9718         cfg80211_stop_p2p_device(rdev, wdev);
9719
9720         return 0;
9721 }
9722
9723 static int nl80211_get_protocol_features(struct sk_buff *skb,
9724                                          struct genl_info *info)
9725 {
9726         void *hdr;
9727         struct sk_buff *msg;
9728
9729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9730         if (!msg)
9731                 return -ENOMEM;
9732
9733         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9734                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9735         if (!hdr)
9736                 goto nla_put_failure;
9737
9738         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9739                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9740                 goto nla_put_failure;
9741
9742         genlmsg_end(msg, hdr);
9743         return genlmsg_reply(msg, info);
9744
9745  nla_put_failure:
9746         kfree_skb(msg);
9747         return -ENOBUFS;
9748 }
9749
9750 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9751 {
9752         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9753         struct cfg80211_update_ft_ies_params ft_params;
9754         struct net_device *dev = info->user_ptr[1];
9755
9756         if (!rdev->ops->update_ft_ies)
9757                 return -EOPNOTSUPP;
9758
9759         if (!info->attrs[NL80211_ATTR_MDID] ||
9760             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9761                 return -EINVAL;
9762
9763         memset(&ft_params, 0, sizeof(ft_params));
9764         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9765         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9766         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9767
9768         return rdev_update_ft_ies(rdev, dev, &ft_params);
9769 }
9770
9771 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9772                                        struct genl_info *info)
9773 {
9774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9775         struct wireless_dev *wdev = info->user_ptr[1];
9776         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9777         u16 duration;
9778         int ret;
9779
9780         if (!rdev->ops->crit_proto_start)
9781                 return -EOPNOTSUPP;
9782
9783         if (WARN_ON(!rdev->ops->crit_proto_stop))
9784                 return -EINVAL;
9785
9786         if (rdev->crit_proto_nlportid)
9787                 return -EBUSY;
9788
9789         /* determine protocol if provided */
9790         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9791                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9792
9793         if (proto >= NUM_NL80211_CRIT_PROTO)
9794                 return -EINVAL;
9795
9796         /* timeout must be provided */
9797         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9798                 return -EINVAL;
9799
9800         duration =
9801                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9802
9803         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9804                 return -ERANGE;
9805
9806         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9807         if (!ret)
9808                 rdev->crit_proto_nlportid = info->snd_portid;
9809
9810         return ret;
9811 }
9812
9813 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9814                                       struct genl_info *info)
9815 {
9816         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9817         struct wireless_dev *wdev = info->user_ptr[1];
9818
9819         if (!rdev->ops->crit_proto_stop)
9820                 return -EOPNOTSUPP;
9821
9822         if (rdev->crit_proto_nlportid) {
9823                 rdev->crit_proto_nlportid = 0;
9824                 rdev_crit_proto_stop(rdev, wdev);
9825         }
9826         return 0;
9827 }
9828
9829 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9830 {
9831         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9832         struct wireless_dev *wdev =
9833                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9834         int i, err;
9835         u32 vid, subcmd;
9836
9837         if (!rdev->wiphy.vendor_commands)
9838                 return -EOPNOTSUPP;
9839
9840         if (IS_ERR(wdev)) {
9841                 err = PTR_ERR(wdev);
9842                 if (err != -EINVAL)
9843                         return err;
9844                 wdev = NULL;
9845         } else if (wdev->wiphy != &rdev->wiphy) {
9846                 return -EINVAL;
9847         }
9848
9849         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9850             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9851                 return -EINVAL;
9852
9853         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9854         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9855         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9856                 const struct wiphy_vendor_command *vcmd;
9857                 void *data = NULL;
9858                 int len = 0;
9859
9860                 vcmd = &rdev->wiphy.vendor_commands[i];
9861
9862                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9863                         continue;
9864
9865                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9866                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9867                         if (!wdev)
9868                                 return -EINVAL;
9869                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9870                             !wdev->netdev)
9871                                 return -EINVAL;
9872
9873                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9874                                 if (wdev->netdev &&
9875                                     !netif_running(wdev->netdev))
9876                                         return -ENETDOWN;
9877                                 if (!wdev->netdev && !wdev->p2p_started)
9878                                         return -ENETDOWN;
9879                         }
9880                 } else {
9881                         wdev = NULL;
9882                 }
9883
9884                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9885                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9886                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9887                 }
9888
9889                 rdev->cur_cmd_info = info;
9890                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9891                                                           data, len);
9892                 rdev->cur_cmd_info = NULL;
9893                 return err;
9894         }
9895
9896         return -EOPNOTSUPP;
9897 }
9898
9899 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9900                                            enum nl80211_commands cmd,
9901                                            enum nl80211_attrs attr,
9902                                            int approxlen)
9903 {
9904         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9905
9906         if (WARN_ON(!rdev->cur_cmd_info))
9907                 return NULL;
9908
9909         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9910                                            rdev->cur_cmd_info->snd_portid,
9911                                            rdev->cur_cmd_info->snd_seq,
9912                                            cmd, attr, NULL, GFP_KERNEL);
9913 }
9914 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9915
9916 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9917 {
9918         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9919         void *hdr = ((void **)skb->cb)[1];
9920         struct nlattr *data = ((void **)skb->cb)[2];
9921
9922         /* clear CB data for netlink core to own from now on */
9923         memset(skb->cb, 0, sizeof(skb->cb));
9924
9925         if (WARN_ON(!rdev->cur_cmd_info)) {
9926                 kfree_skb(skb);
9927                 return -EINVAL;
9928         }
9929
9930         nla_nest_end(skb, data);
9931         genlmsg_end(skb, hdr);
9932         return genlmsg_reply(skb, rdev->cur_cmd_info);
9933 }
9934 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9935
9936
9937 static int nl80211_set_qos_map(struct sk_buff *skb,
9938                                struct genl_info *info)
9939 {
9940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9941         struct cfg80211_qos_map *qos_map = NULL;
9942         struct net_device *dev = info->user_ptr[1];
9943         u8 *pos, len, num_des, des_len, des;
9944         int ret;
9945
9946         if (!rdev->ops->set_qos_map)
9947                 return -EOPNOTSUPP;
9948
9949         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9950                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9951                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9952
9953                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9954                     len > IEEE80211_QOS_MAP_LEN_MAX)
9955                         return -EINVAL;
9956
9957                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9958                 if (!qos_map)
9959                         return -ENOMEM;
9960
9961                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9962                 if (num_des) {
9963                         des_len = num_des *
9964                                 sizeof(struct cfg80211_dscp_exception);
9965                         memcpy(qos_map->dscp_exception, pos, des_len);
9966                         qos_map->num_des = num_des;
9967                         for (des = 0; des < num_des; des++) {
9968                                 if (qos_map->dscp_exception[des].up > 7) {
9969                                         kfree(qos_map);
9970                                         return -EINVAL;
9971                                 }
9972                         }
9973                         pos += des_len;
9974                 }
9975                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9976         }
9977
9978         wdev_lock(dev->ieee80211_ptr);
9979         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9980         if (!ret)
9981                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9982         wdev_unlock(dev->ieee80211_ptr);
9983
9984         kfree(qos_map);
9985         return ret;
9986 }
9987
9988 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9989 {
9990         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9991         struct net_device *dev = info->user_ptr[1];
9992         struct wireless_dev *wdev = dev->ieee80211_ptr;
9993         const u8 *peer;
9994         u8 tsid, up;
9995         u16 admitted_time = 0;
9996         int err;
9997
9998         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9999                 return -EOPNOTSUPP;
10000
10001         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10002             !info->attrs[NL80211_ATTR_USER_PRIO])
10003                 return -EINVAL;
10004
10005         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10006         if (tsid >= IEEE80211_NUM_TIDS)
10007                 return -EINVAL;
10008
10009         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10010         if (up >= IEEE80211_NUM_UPS)
10011                 return -EINVAL;
10012
10013         /* WMM uses TIDs 0-7 even for TSPEC */
10014         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10015                 /* TODO: handle 802.11 TSPEC/admission control
10016                  * need more attributes for that (e.g. BA session requirement);
10017                  * change the WMM adminssion test above to allow both then
10018                  */
10019                 return -EINVAL;
10020         }
10021
10022         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10023
10024         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10025                 admitted_time =
10026                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10027                 if (!admitted_time)
10028                         return -EINVAL;
10029         }
10030
10031         wdev_lock(wdev);
10032         switch (wdev->iftype) {
10033         case NL80211_IFTYPE_STATION:
10034         case NL80211_IFTYPE_P2P_CLIENT:
10035                 if (wdev->current_bss)
10036                         break;
10037                 err = -ENOTCONN;
10038                 goto out;
10039         default:
10040                 err = -EOPNOTSUPP;
10041                 goto out;
10042         }
10043
10044         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10045
10046  out:
10047         wdev_unlock(wdev);
10048         return err;
10049 }
10050
10051 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10052 {
10053         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10054         struct net_device *dev = info->user_ptr[1];
10055         struct wireless_dev *wdev = dev->ieee80211_ptr;
10056         const u8 *peer;
10057         u8 tsid;
10058         int err;
10059
10060         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10061                 return -EINVAL;
10062
10063         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10064         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10065
10066         wdev_lock(wdev);
10067         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10068         wdev_unlock(wdev);
10069
10070         return err;
10071 }
10072
10073 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10074                                        struct genl_info *info)
10075 {
10076         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10077         struct net_device *dev = info->user_ptr[1];
10078         struct wireless_dev *wdev = dev->ieee80211_ptr;
10079         struct cfg80211_chan_def chandef = {};
10080         const u8 *addr;
10081         u8 oper_class;
10082         int err;
10083
10084         if (!rdev->ops->tdls_channel_switch ||
10085             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10086                 return -EOPNOTSUPP;
10087
10088         switch (dev->ieee80211_ptr->iftype) {
10089         case NL80211_IFTYPE_STATION:
10090         case NL80211_IFTYPE_P2P_CLIENT:
10091                 break;
10092         default:
10093                 return -EOPNOTSUPP;
10094         }
10095
10096         if (!info->attrs[NL80211_ATTR_MAC] ||
10097             !info->attrs[NL80211_ATTR_OPER_CLASS])
10098                 return -EINVAL;
10099
10100         err = nl80211_parse_chandef(rdev, info, &chandef);
10101         if (err)
10102                 return err;
10103
10104         /*
10105          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10106          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10107          * specification is not defined for them.
10108          */
10109         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10110             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10111             chandef.width != NL80211_CHAN_WIDTH_20)
10112                 return -EINVAL;
10113
10114         /* we will be active on the TDLS link */
10115         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10116                 return -EINVAL;
10117
10118         /* don't allow switching to DFS channels */
10119         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10120                 return -EINVAL;
10121
10122         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10123         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10124
10125         wdev_lock(wdev);
10126         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10127         wdev_unlock(wdev);
10128
10129         return err;
10130 }
10131
10132 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10133                                               struct genl_info *info)
10134 {
10135         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10136         struct net_device *dev = info->user_ptr[1];
10137         struct wireless_dev *wdev = dev->ieee80211_ptr;
10138         const u8 *addr;
10139
10140         if (!rdev->ops->tdls_channel_switch ||
10141             !rdev->ops->tdls_cancel_channel_switch ||
10142             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10143                 return -EOPNOTSUPP;
10144
10145         switch (dev->ieee80211_ptr->iftype) {
10146         case NL80211_IFTYPE_STATION:
10147         case NL80211_IFTYPE_P2P_CLIENT:
10148                 break;
10149         default:
10150                 return -EOPNOTSUPP;
10151         }
10152
10153         if (!info->attrs[NL80211_ATTR_MAC])
10154                 return -EINVAL;
10155
10156         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10157
10158         wdev_lock(wdev);
10159         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10160         wdev_unlock(wdev);
10161
10162         return 0;
10163 }
10164
10165 #define NL80211_FLAG_NEED_WIPHY         0x01
10166 #define NL80211_FLAG_NEED_NETDEV        0x02
10167 #define NL80211_FLAG_NEED_RTNL          0x04
10168 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10169 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10170                                          NL80211_FLAG_CHECK_NETDEV_UP)
10171 #define NL80211_FLAG_NEED_WDEV          0x10
10172 /* If a netdev is associated, it must be UP, P2P must be started */
10173 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10174                                          NL80211_FLAG_CHECK_NETDEV_UP)
10175 #define NL80211_FLAG_CLEAR_SKB          0x20
10176
10177 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10178                             struct genl_info *info)
10179 {
10180         struct cfg80211_registered_device *rdev;
10181         struct wireless_dev *wdev;
10182         struct net_device *dev;
10183         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10184
10185         if (rtnl)
10186                 rtnl_lock();
10187
10188         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10189                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10190                 if (IS_ERR(rdev)) {
10191                         if (rtnl)
10192                                 rtnl_unlock();
10193                         return PTR_ERR(rdev);
10194                 }
10195                 info->user_ptr[0] = rdev;
10196         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10197                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10198                 ASSERT_RTNL();
10199
10200                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10201                                                   info->attrs);
10202                 if (IS_ERR(wdev)) {
10203                         if (rtnl)
10204                                 rtnl_unlock();
10205                         return PTR_ERR(wdev);
10206                 }
10207
10208                 dev = wdev->netdev;
10209                 rdev = wiphy_to_rdev(wdev->wiphy);
10210
10211                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10212                         if (!dev) {
10213                                 if (rtnl)
10214                                         rtnl_unlock();
10215                                 return -EINVAL;
10216                         }
10217
10218                         info->user_ptr[1] = dev;
10219                 } else {
10220                         info->user_ptr[1] = wdev;
10221                 }
10222
10223                 if (dev) {
10224                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10225                             !netif_running(dev)) {
10226                                 if (rtnl)
10227                                         rtnl_unlock();
10228                                 return -ENETDOWN;
10229                         }
10230
10231                         dev_hold(dev);
10232                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10233                         if (!wdev->p2p_started) {
10234                                 if (rtnl)
10235                                         rtnl_unlock();
10236                                 return -ENETDOWN;
10237                         }
10238                 }
10239
10240                 info->user_ptr[0] = rdev;
10241         }
10242
10243         return 0;
10244 }
10245
10246 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10247                               struct genl_info *info)
10248 {
10249         if (info->user_ptr[1]) {
10250                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10251                         struct wireless_dev *wdev = info->user_ptr[1];
10252
10253                         if (wdev->netdev)
10254                                 dev_put(wdev->netdev);
10255                 } else {
10256                         dev_put(info->user_ptr[1]);
10257                 }
10258         }
10259
10260         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10261                 rtnl_unlock();
10262
10263         /* If needed, clear the netlink message payload from the SKB
10264          * as it might contain key data that shouldn't stick around on
10265          * the heap after the SKB is freed. The netlink message header
10266          * is still needed for further processing, so leave it intact.
10267          */
10268         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10269                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10270
10271                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10272         }
10273 }
10274
10275 static const struct genl_ops nl80211_ops[] = {
10276         {
10277                 .cmd = NL80211_CMD_GET_WIPHY,
10278                 .doit = nl80211_get_wiphy,
10279                 .dumpit = nl80211_dump_wiphy,
10280                 .done = nl80211_dump_wiphy_done,
10281                 .policy = nl80211_policy,
10282                 /* can be retrieved by unprivileged users */
10283                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10284                                   NL80211_FLAG_NEED_RTNL,
10285         },
10286         {
10287                 .cmd = NL80211_CMD_SET_WIPHY,
10288                 .doit = nl80211_set_wiphy,
10289                 .policy = nl80211_policy,
10290                 .flags = GENL_ADMIN_PERM,
10291                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10292         },
10293         {
10294                 .cmd = NL80211_CMD_GET_INTERFACE,
10295                 .doit = nl80211_get_interface,
10296                 .dumpit = nl80211_dump_interface,
10297                 .policy = nl80211_policy,
10298                 /* can be retrieved by unprivileged users */
10299                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10300                                   NL80211_FLAG_NEED_RTNL,
10301         },
10302         {
10303                 .cmd = NL80211_CMD_SET_INTERFACE,
10304                 .doit = nl80211_set_interface,
10305                 .policy = nl80211_policy,
10306                 .flags = GENL_ADMIN_PERM,
10307                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10308                                   NL80211_FLAG_NEED_RTNL,
10309         },
10310         {
10311                 .cmd = NL80211_CMD_NEW_INTERFACE,
10312                 .doit = nl80211_new_interface,
10313                 .policy = nl80211_policy,
10314                 .flags = GENL_ADMIN_PERM,
10315                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10316                                   NL80211_FLAG_NEED_RTNL,
10317         },
10318         {
10319                 .cmd = NL80211_CMD_DEL_INTERFACE,
10320                 .doit = nl80211_del_interface,
10321                 .policy = nl80211_policy,
10322                 .flags = GENL_ADMIN_PERM,
10323                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10324                                   NL80211_FLAG_NEED_RTNL,
10325         },
10326         {
10327                 .cmd = NL80211_CMD_GET_KEY,
10328                 .doit = nl80211_get_key,
10329                 .policy = nl80211_policy,
10330                 .flags = GENL_ADMIN_PERM,
10331                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10332                                   NL80211_FLAG_NEED_RTNL,
10333         },
10334         {
10335                 .cmd = NL80211_CMD_SET_KEY,
10336                 .doit = nl80211_set_key,
10337                 .policy = nl80211_policy,
10338                 .flags = GENL_ADMIN_PERM,
10339                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10340                                   NL80211_FLAG_NEED_RTNL |
10341                                   NL80211_FLAG_CLEAR_SKB,
10342         },
10343         {
10344                 .cmd = NL80211_CMD_NEW_KEY,
10345                 .doit = nl80211_new_key,
10346                 .policy = nl80211_policy,
10347                 .flags = GENL_ADMIN_PERM,
10348                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10349                                   NL80211_FLAG_NEED_RTNL |
10350                                   NL80211_FLAG_CLEAR_SKB,
10351         },
10352         {
10353                 .cmd = NL80211_CMD_DEL_KEY,
10354                 .doit = nl80211_del_key,
10355                 .policy = nl80211_policy,
10356                 .flags = GENL_ADMIN_PERM,
10357                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10358                                   NL80211_FLAG_NEED_RTNL,
10359         },
10360         {
10361                 .cmd = NL80211_CMD_SET_BEACON,
10362                 .policy = nl80211_policy,
10363                 .flags = GENL_ADMIN_PERM,
10364                 .doit = nl80211_set_beacon,
10365                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10366                                   NL80211_FLAG_NEED_RTNL,
10367         },
10368         {
10369                 .cmd = NL80211_CMD_START_AP,
10370                 .policy = nl80211_policy,
10371                 .flags = GENL_ADMIN_PERM,
10372                 .doit = nl80211_start_ap,
10373                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10374                                   NL80211_FLAG_NEED_RTNL,
10375         },
10376         {
10377                 .cmd = NL80211_CMD_STOP_AP,
10378                 .policy = nl80211_policy,
10379                 .flags = GENL_ADMIN_PERM,
10380                 .doit = nl80211_stop_ap,
10381                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10382                                   NL80211_FLAG_NEED_RTNL,
10383         },
10384         {
10385                 .cmd = NL80211_CMD_GET_STATION,
10386                 .doit = nl80211_get_station,
10387                 .dumpit = nl80211_dump_station,
10388                 .policy = nl80211_policy,
10389                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10390                                   NL80211_FLAG_NEED_RTNL,
10391         },
10392         {
10393                 .cmd = NL80211_CMD_SET_STATION,
10394                 .doit = nl80211_set_station,
10395                 .policy = nl80211_policy,
10396                 .flags = GENL_ADMIN_PERM,
10397                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10398                                   NL80211_FLAG_NEED_RTNL,
10399         },
10400         {
10401                 .cmd = NL80211_CMD_NEW_STATION,
10402                 .doit = nl80211_new_station,
10403                 .policy = nl80211_policy,
10404                 .flags = GENL_ADMIN_PERM,
10405                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10406                                   NL80211_FLAG_NEED_RTNL,
10407         },
10408         {
10409                 .cmd = NL80211_CMD_DEL_STATION,
10410                 .doit = nl80211_del_station,
10411                 .policy = nl80211_policy,
10412                 .flags = GENL_ADMIN_PERM,
10413                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10414                                   NL80211_FLAG_NEED_RTNL,
10415         },
10416         {
10417                 .cmd = NL80211_CMD_GET_MPATH,
10418                 .doit = nl80211_get_mpath,
10419                 .dumpit = nl80211_dump_mpath,
10420                 .policy = nl80211_policy,
10421                 .flags = GENL_ADMIN_PERM,
10422                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10423                                   NL80211_FLAG_NEED_RTNL,
10424         },
10425         {
10426                 .cmd = NL80211_CMD_GET_MPP,
10427                 .doit = nl80211_get_mpp,
10428                 .dumpit = nl80211_dump_mpp,
10429                 .policy = nl80211_policy,
10430                 .flags = GENL_ADMIN_PERM,
10431                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10432                                   NL80211_FLAG_NEED_RTNL,
10433         },
10434         {
10435                 .cmd = NL80211_CMD_SET_MPATH,
10436                 .doit = nl80211_set_mpath,
10437                 .policy = nl80211_policy,
10438                 .flags = GENL_ADMIN_PERM,
10439                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10440                                   NL80211_FLAG_NEED_RTNL,
10441         },
10442         {
10443                 .cmd = NL80211_CMD_NEW_MPATH,
10444                 .doit = nl80211_new_mpath,
10445                 .policy = nl80211_policy,
10446                 .flags = GENL_ADMIN_PERM,
10447                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10448                                   NL80211_FLAG_NEED_RTNL,
10449         },
10450         {
10451                 .cmd = NL80211_CMD_DEL_MPATH,
10452                 .doit = nl80211_del_mpath,
10453                 .policy = nl80211_policy,
10454                 .flags = GENL_ADMIN_PERM,
10455                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10456                                   NL80211_FLAG_NEED_RTNL,
10457         },
10458         {
10459                 .cmd = NL80211_CMD_SET_BSS,
10460                 .doit = nl80211_set_bss,
10461                 .policy = nl80211_policy,
10462                 .flags = GENL_ADMIN_PERM,
10463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10464                                   NL80211_FLAG_NEED_RTNL,
10465         },
10466         {
10467                 .cmd = NL80211_CMD_GET_REG,
10468                 .doit = nl80211_get_reg_do,
10469                 .dumpit = nl80211_get_reg_dump,
10470                 .policy = nl80211_policy,
10471                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10472                 /* can be retrieved by unprivileged users */
10473         },
10474         {
10475                 .cmd = NL80211_CMD_SET_REG,
10476                 .doit = nl80211_set_reg,
10477                 .policy = nl80211_policy,
10478                 .flags = GENL_ADMIN_PERM,
10479                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10480         },
10481         {
10482                 .cmd = NL80211_CMD_REQ_SET_REG,
10483                 .doit = nl80211_req_set_reg,
10484                 .policy = nl80211_policy,
10485                 .flags = GENL_ADMIN_PERM,
10486         },
10487         {
10488                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10489                 .doit = nl80211_get_mesh_config,
10490                 .policy = nl80211_policy,
10491                 /* can be retrieved by unprivileged users */
10492                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10493                                   NL80211_FLAG_NEED_RTNL,
10494         },
10495         {
10496                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10497                 .doit = nl80211_update_mesh_config,
10498                 .policy = nl80211_policy,
10499                 .flags = GENL_ADMIN_PERM,
10500                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10501                                   NL80211_FLAG_NEED_RTNL,
10502         },
10503         {
10504                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10505                 .doit = nl80211_trigger_scan,
10506                 .policy = nl80211_policy,
10507                 .flags = GENL_ADMIN_PERM,
10508                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10509                                   NL80211_FLAG_NEED_RTNL,
10510         },
10511         {
10512                 .cmd = NL80211_CMD_GET_SCAN,
10513                 .policy = nl80211_policy,
10514                 .dumpit = nl80211_dump_scan,
10515         },
10516         {
10517                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10518                 .doit = nl80211_start_sched_scan,
10519                 .policy = nl80211_policy,
10520                 .flags = GENL_ADMIN_PERM,
10521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10522                                   NL80211_FLAG_NEED_RTNL,
10523         },
10524         {
10525                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10526                 .doit = nl80211_stop_sched_scan,
10527                 .policy = nl80211_policy,
10528                 .flags = GENL_ADMIN_PERM,
10529                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10530                                   NL80211_FLAG_NEED_RTNL,
10531         },
10532         {
10533                 .cmd = NL80211_CMD_AUTHENTICATE,
10534                 .doit = nl80211_authenticate,
10535                 .policy = nl80211_policy,
10536                 .flags = GENL_ADMIN_PERM,
10537                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10538                                   NL80211_FLAG_NEED_RTNL |
10539                                   NL80211_FLAG_CLEAR_SKB,
10540         },
10541         {
10542                 .cmd = NL80211_CMD_ASSOCIATE,
10543                 .doit = nl80211_associate,
10544                 .policy = nl80211_policy,
10545                 .flags = GENL_ADMIN_PERM,
10546                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10547                                   NL80211_FLAG_NEED_RTNL,
10548         },
10549         {
10550                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10551                 .doit = nl80211_deauthenticate,
10552                 .policy = nl80211_policy,
10553                 .flags = GENL_ADMIN_PERM,
10554                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10555                                   NL80211_FLAG_NEED_RTNL,
10556         },
10557         {
10558                 .cmd = NL80211_CMD_DISASSOCIATE,
10559                 .doit = nl80211_disassociate,
10560                 .policy = nl80211_policy,
10561                 .flags = GENL_ADMIN_PERM,
10562                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10563                                   NL80211_FLAG_NEED_RTNL,
10564         },
10565         {
10566                 .cmd = NL80211_CMD_JOIN_IBSS,
10567                 .doit = nl80211_join_ibss,
10568                 .policy = nl80211_policy,
10569                 .flags = GENL_ADMIN_PERM,
10570                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10571                                   NL80211_FLAG_NEED_RTNL,
10572         },
10573         {
10574                 .cmd = NL80211_CMD_LEAVE_IBSS,
10575                 .doit = nl80211_leave_ibss,
10576                 .policy = nl80211_policy,
10577                 .flags = GENL_ADMIN_PERM,
10578                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10579                                   NL80211_FLAG_NEED_RTNL,
10580         },
10581 #ifdef CONFIG_NL80211_TESTMODE
10582         {
10583                 .cmd = NL80211_CMD_TESTMODE,
10584                 .doit = nl80211_testmode_do,
10585                 .dumpit = nl80211_testmode_dump,
10586                 .policy = nl80211_policy,
10587                 .flags = GENL_ADMIN_PERM,
10588                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10589                                   NL80211_FLAG_NEED_RTNL,
10590         },
10591 #endif
10592         {
10593                 .cmd = NL80211_CMD_CONNECT,
10594                 .doit = nl80211_connect,
10595                 .policy = nl80211_policy,
10596                 .flags = GENL_ADMIN_PERM,
10597                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10598                                   NL80211_FLAG_NEED_RTNL,
10599         },
10600         {
10601                 .cmd = NL80211_CMD_DISCONNECT,
10602                 .doit = nl80211_disconnect,
10603                 .policy = nl80211_policy,
10604                 .flags = GENL_ADMIN_PERM,
10605                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10606                                   NL80211_FLAG_NEED_RTNL,
10607         },
10608         {
10609                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10610                 .doit = nl80211_wiphy_netns,
10611                 .policy = nl80211_policy,
10612                 .flags = GENL_ADMIN_PERM,
10613                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10614                                   NL80211_FLAG_NEED_RTNL,
10615         },
10616         {
10617                 .cmd = NL80211_CMD_GET_SURVEY,
10618                 .policy = nl80211_policy,
10619                 .dumpit = nl80211_dump_survey,
10620         },
10621         {
10622                 .cmd = NL80211_CMD_SET_PMKSA,
10623                 .doit = nl80211_setdel_pmksa,
10624                 .policy = nl80211_policy,
10625                 .flags = GENL_ADMIN_PERM,
10626                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10627                                   NL80211_FLAG_NEED_RTNL,
10628         },
10629         {
10630                 .cmd = NL80211_CMD_DEL_PMKSA,
10631                 .doit = nl80211_setdel_pmksa,
10632                 .policy = nl80211_policy,
10633                 .flags = GENL_ADMIN_PERM,
10634                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10635                                   NL80211_FLAG_NEED_RTNL,
10636         },
10637         {
10638                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10639                 .doit = nl80211_flush_pmksa,
10640                 .policy = nl80211_policy,
10641                 .flags = GENL_ADMIN_PERM,
10642                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10643                                   NL80211_FLAG_NEED_RTNL,
10644         },
10645         {
10646                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10647                 .doit = nl80211_remain_on_channel,
10648                 .policy = nl80211_policy,
10649                 .flags = GENL_ADMIN_PERM,
10650                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10651                                   NL80211_FLAG_NEED_RTNL,
10652         },
10653         {
10654                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10655                 .doit = nl80211_cancel_remain_on_channel,
10656                 .policy = nl80211_policy,
10657                 .flags = GENL_ADMIN_PERM,
10658                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10659                                   NL80211_FLAG_NEED_RTNL,
10660         },
10661         {
10662                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10663                 .doit = nl80211_set_tx_bitrate_mask,
10664                 .policy = nl80211_policy,
10665                 .flags = GENL_ADMIN_PERM,
10666                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10667                                   NL80211_FLAG_NEED_RTNL,
10668         },
10669         {
10670                 .cmd = NL80211_CMD_REGISTER_FRAME,
10671                 .doit = nl80211_register_mgmt,
10672                 .policy = nl80211_policy,
10673                 .flags = GENL_ADMIN_PERM,
10674                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10675                                   NL80211_FLAG_NEED_RTNL,
10676         },
10677         {
10678                 .cmd = NL80211_CMD_FRAME,
10679                 .doit = nl80211_tx_mgmt,
10680                 .policy = nl80211_policy,
10681                 .flags = GENL_ADMIN_PERM,
10682                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10683                                   NL80211_FLAG_NEED_RTNL,
10684         },
10685         {
10686                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10687                 .doit = nl80211_tx_mgmt_cancel_wait,
10688                 .policy = nl80211_policy,
10689                 .flags = GENL_ADMIN_PERM,
10690                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10691                                   NL80211_FLAG_NEED_RTNL,
10692         },
10693         {
10694                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10695                 .doit = nl80211_set_power_save,
10696                 .policy = nl80211_policy,
10697                 .flags = GENL_ADMIN_PERM,
10698                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10699                                   NL80211_FLAG_NEED_RTNL,
10700         },
10701         {
10702                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10703                 .doit = nl80211_get_power_save,
10704                 .policy = nl80211_policy,
10705                 /* can be retrieved by unprivileged users */
10706                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10707                                   NL80211_FLAG_NEED_RTNL,
10708         },
10709         {
10710                 .cmd = NL80211_CMD_SET_CQM,
10711                 .doit = nl80211_set_cqm,
10712                 .policy = nl80211_policy,
10713                 .flags = GENL_ADMIN_PERM,
10714                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10715                                   NL80211_FLAG_NEED_RTNL,
10716         },
10717         {
10718                 .cmd = NL80211_CMD_SET_CHANNEL,
10719                 .doit = nl80211_set_channel,
10720                 .policy = nl80211_policy,
10721                 .flags = GENL_ADMIN_PERM,
10722                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10723                                   NL80211_FLAG_NEED_RTNL,
10724         },
10725         {
10726                 .cmd = NL80211_CMD_SET_WDS_PEER,
10727                 .doit = nl80211_set_wds_peer,
10728                 .policy = nl80211_policy,
10729                 .flags = GENL_ADMIN_PERM,
10730                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10731                                   NL80211_FLAG_NEED_RTNL,
10732         },
10733         {
10734                 .cmd = NL80211_CMD_JOIN_MESH,
10735                 .doit = nl80211_join_mesh,
10736                 .policy = nl80211_policy,
10737                 .flags = GENL_ADMIN_PERM,
10738                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10739                                   NL80211_FLAG_NEED_RTNL,
10740         },
10741         {
10742                 .cmd = NL80211_CMD_LEAVE_MESH,
10743                 .doit = nl80211_leave_mesh,
10744                 .policy = nl80211_policy,
10745                 .flags = GENL_ADMIN_PERM,
10746                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10747                                   NL80211_FLAG_NEED_RTNL,
10748         },
10749         {
10750                 .cmd = NL80211_CMD_JOIN_OCB,
10751                 .doit = nl80211_join_ocb,
10752                 .policy = nl80211_policy,
10753                 .flags = GENL_ADMIN_PERM,
10754                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10755                                   NL80211_FLAG_NEED_RTNL,
10756         },
10757         {
10758                 .cmd = NL80211_CMD_LEAVE_OCB,
10759                 .doit = nl80211_leave_ocb,
10760                 .policy = nl80211_policy,
10761                 .flags = GENL_ADMIN_PERM,
10762                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10763                                   NL80211_FLAG_NEED_RTNL,
10764         },
10765 #ifdef CONFIG_PM
10766         {
10767                 .cmd = NL80211_CMD_GET_WOWLAN,
10768                 .doit = nl80211_get_wowlan,
10769                 .policy = nl80211_policy,
10770                 /* can be retrieved by unprivileged users */
10771                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10772                                   NL80211_FLAG_NEED_RTNL,
10773         },
10774         {
10775                 .cmd = NL80211_CMD_SET_WOWLAN,
10776                 .doit = nl80211_set_wowlan,
10777                 .policy = nl80211_policy,
10778                 .flags = GENL_ADMIN_PERM,
10779                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10780                                   NL80211_FLAG_NEED_RTNL,
10781         },
10782 #endif
10783         {
10784                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10785                 .doit = nl80211_set_rekey_data,
10786                 .policy = nl80211_policy,
10787                 .flags = GENL_ADMIN_PERM,
10788                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10789                                   NL80211_FLAG_NEED_RTNL |
10790                                   NL80211_FLAG_CLEAR_SKB,
10791         },
10792         {
10793                 .cmd = NL80211_CMD_TDLS_MGMT,
10794                 .doit = nl80211_tdls_mgmt,
10795                 .policy = nl80211_policy,
10796                 .flags = GENL_ADMIN_PERM,
10797                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10798                                   NL80211_FLAG_NEED_RTNL,
10799         },
10800         {
10801                 .cmd = NL80211_CMD_TDLS_OPER,
10802                 .doit = nl80211_tdls_oper,
10803                 .policy = nl80211_policy,
10804                 .flags = GENL_ADMIN_PERM,
10805                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10806                                   NL80211_FLAG_NEED_RTNL,
10807         },
10808         {
10809                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10810                 .doit = nl80211_register_unexpected_frame,
10811                 .policy = nl80211_policy,
10812                 .flags = GENL_ADMIN_PERM,
10813                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10814                                   NL80211_FLAG_NEED_RTNL,
10815         },
10816         {
10817                 .cmd = NL80211_CMD_PROBE_CLIENT,
10818                 .doit = nl80211_probe_client,
10819                 .policy = nl80211_policy,
10820                 .flags = GENL_ADMIN_PERM,
10821                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10822                                   NL80211_FLAG_NEED_RTNL,
10823         },
10824         {
10825                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10826                 .doit = nl80211_register_beacons,
10827                 .policy = nl80211_policy,
10828                 .flags = GENL_ADMIN_PERM,
10829                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10830                                   NL80211_FLAG_NEED_RTNL,
10831         },
10832         {
10833                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10834                 .doit = nl80211_set_noack_map,
10835                 .policy = nl80211_policy,
10836                 .flags = GENL_ADMIN_PERM,
10837                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10838                                   NL80211_FLAG_NEED_RTNL,
10839         },
10840         {
10841                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10842                 .doit = nl80211_start_p2p_device,
10843                 .policy = nl80211_policy,
10844                 .flags = GENL_ADMIN_PERM,
10845                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10846                                   NL80211_FLAG_NEED_RTNL,
10847         },
10848         {
10849                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10850                 .doit = nl80211_stop_p2p_device,
10851                 .policy = nl80211_policy,
10852                 .flags = GENL_ADMIN_PERM,
10853                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10854                                   NL80211_FLAG_NEED_RTNL,
10855         },
10856         {
10857                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10858                 .doit = nl80211_set_mcast_rate,
10859                 .policy = nl80211_policy,
10860                 .flags = GENL_ADMIN_PERM,
10861                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10862                                   NL80211_FLAG_NEED_RTNL,
10863         },
10864         {
10865                 .cmd = NL80211_CMD_SET_MAC_ACL,
10866                 .doit = nl80211_set_mac_acl,
10867                 .policy = nl80211_policy,
10868                 .flags = GENL_ADMIN_PERM,
10869                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10870                                   NL80211_FLAG_NEED_RTNL,
10871         },
10872         {
10873                 .cmd = NL80211_CMD_RADAR_DETECT,
10874                 .doit = nl80211_start_radar_detection,
10875                 .policy = nl80211_policy,
10876                 .flags = GENL_ADMIN_PERM,
10877                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10878                                   NL80211_FLAG_NEED_RTNL,
10879         },
10880         {
10881                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10882                 .doit = nl80211_get_protocol_features,
10883                 .policy = nl80211_policy,
10884         },
10885         {
10886                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10887                 .doit = nl80211_update_ft_ies,
10888                 .policy = nl80211_policy,
10889                 .flags = GENL_ADMIN_PERM,
10890                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10891                                   NL80211_FLAG_NEED_RTNL,
10892         },
10893         {
10894                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10895                 .doit = nl80211_crit_protocol_start,
10896                 .policy = nl80211_policy,
10897                 .flags = GENL_ADMIN_PERM,
10898                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10899                                   NL80211_FLAG_NEED_RTNL,
10900         },
10901         {
10902                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10903                 .doit = nl80211_crit_protocol_stop,
10904                 .policy = nl80211_policy,
10905                 .flags = GENL_ADMIN_PERM,
10906                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10907                                   NL80211_FLAG_NEED_RTNL,
10908         },
10909         {
10910                 .cmd = NL80211_CMD_GET_COALESCE,
10911                 .doit = nl80211_get_coalesce,
10912                 .policy = nl80211_policy,
10913                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10914                                   NL80211_FLAG_NEED_RTNL,
10915         },
10916         {
10917                 .cmd = NL80211_CMD_SET_COALESCE,
10918                 .doit = nl80211_set_coalesce,
10919                 .policy = nl80211_policy,
10920                 .flags = GENL_ADMIN_PERM,
10921                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10922                                   NL80211_FLAG_NEED_RTNL,
10923         },
10924         {
10925                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10926                 .doit = nl80211_channel_switch,
10927                 .policy = nl80211_policy,
10928                 .flags = GENL_ADMIN_PERM,
10929                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10930                                   NL80211_FLAG_NEED_RTNL,
10931         },
10932         {
10933                 .cmd = NL80211_CMD_VENDOR,
10934                 .doit = nl80211_vendor_cmd,
10935                 .policy = nl80211_policy,
10936                 .flags = GENL_ADMIN_PERM,
10937                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10938                                   NL80211_FLAG_NEED_RTNL,
10939         },
10940         {
10941                 .cmd = NL80211_CMD_SET_QOS_MAP,
10942                 .doit = nl80211_set_qos_map,
10943                 .policy = nl80211_policy,
10944                 .flags = GENL_ADMIN_PERM,
10945                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10946                                   NL80211_FLAG_NEED_RTNL,
10947         },
10948         {
10949                 .cmd = NL80211_CMD_ADD_TX_TS,
10950                 .doit = nl80211_add_tx_ts,
10951                 .policy = nl80211_policy,
10952                 .flags = GENL_ADMIN_PERM,
10953                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10954                                   NL80211_FLAG_NEED_RTNL,
10955         },
10956         {
10957                 .cmd = NL80211_CMD_DEL_TX_TS,
10958                 .doit = nl80211_del_tx_ts,
10959                 .policy = nl80211_policy,
10960                 .flags = GENL_ADMIN_PERM,
10961                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10962                                   NL80211_FLAG_NEED_RTNL,
10963         },
10964         {
10965                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10966                 .doit = nl80211_tdls_channel_switch,
10967                 .policy = nl80211_policy,
10968                 .flags = GENL_ADMIN_PERM,
10969                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10970                                   NL80211_FLAG_NEED_RTNL,
10971         },
10972         {
10973                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10974                 .doit = nl80211_tdls_cancel_channel_switch,
10975                 .policy = nl80211_policy,
10976                 .flags = GENL_ADMIN_PERM,
10977                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10978                                   NL80211_FLAG_NEED_RTNL,
10979         },
10980 };
10981
10982 /* notification functions */
10983
10984 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10985                           enum nl80211_commands cmd)
10986 {
10987         struct sk_buff *msg;
10988         struct nl80211_dump_wiphy_state state = {};
10989
10990         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10991                 cmd != NL80211_CMD_DEL_WIPHY);
10992
10993         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10994         if (!msg)
10995                 return;
10996
10997         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10998                 nlmsg_free(msg);
10999                 return;
11000         }
11001
11002         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11003                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11004 }
11005
11006 static int nl80211_add_scan_req(struct sk_buff *msg,
11007                                 struct cfg80211_registered_device *rdev)
11008 {
11009         struct cfg80211_scan_request *req = rdev->scan_req;
11010         struct nlattr *nest;
11011         int i;
11012
11013         if (WARN_ON(!req))
11014                 return 0;
11015
11016         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11017         if (!nest)
11018                 goto nla_put_failure;
11019         for (i = 0; i < req->n_ssids; i++) {
11020                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11021                         goto nla_put_failure;
11022         }
11023         nla_nest_end(msg, nest);
11024
11025         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11026         if (!nest)
11027                 goto nla_put_failure;
11028         for (i = 0; i < req->n_channels; i++) {
11029                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11030                         goto nla_put_failure;
11031         }
11032         nla_nest_end(msg, nest);
11033
11034         if (req->ie &&
11035             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11036                 goto nla_put_failure;
11037
11038         if (req->flags &&
11039             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11040                 goto nla_put_failure;
11041
11042         return 0;
11043  nla_put_failure:
11044         return -ENOBUFS;
11045 }
11046
11047 static int nl80211_send_scan_msg(struct sk_buff *msg,
11048                                  struct cfg80211_registered_device *rdev,
11049                                  struct wireless_dev *wdev,
11050                                  u32 portid, u32 seq, int flags,
11051                                  u32 cmd)
11052 {
11053         void *hdr;
11054
11055         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11056         if (!hdr)
11057                 return -1;
11058
11059         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11060             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11061                                          wdev->netdev->ifindex)) ||
11062             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11063                 goto nla_put_failure;
11064
11065         /* ignore errors and send incomplete event anyway */
11066         nl80211_add_scan_req(msg, rdev);
11067
11068         genlmsg_end(msg, hdr);
11069         return 0;
11070
11071  nla_put_failure:
11072         genlmsg_cancel(msg, hdr);
11073         return -EMSGSIZE;
11074 }
11075
11076 static int
11077 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11078                             struct cfg80211_registered_device *rdev,
11079                             struct net_device *netdev,
11080                             u32 portid, u32 seq, int flags, u32 cmd)
11081 {
11082         void *hdr;
11083
11084         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11085         if (!hdr)
11086                 return -1;
11087
11088         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11089             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11090                 goto nla_put_failure;
11091
11092         genlmsg_end(msg, hdr);
11093         return 0;
11094
11095  nla_put_failure:
11096         genlmsg_cancel(msg, hdr);
11097         return -EMSGSIZE;
11098 }
11099
11100 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11101                              struct wireless_dev *wdev)
11102 {
11103         struct sk_buff *msg;
11104
11105         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11106         if (!msg)
11107                 return;
11108
11109         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11110                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11111                 nlmsg_free(msg);
11112                 return;
11113         }
11114
11115         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11116                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11117 }
11118
11119 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11120                                        struct wireless_dev *wdev, bool aborted)
11121 {
11122         struct sk_buff *msg;
11123
11124         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11125         if (!msg)
11126                 return NULL;
11127
11128         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11129                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11130                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11131                 nlmsg_free(msg);
11132                 return NULL;
11133         }
11134
11135         return msg;
11136 }
11137
11138 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11139                               struct sk_buff *msg)
11140 {
11141         if (!msg)
11142                 return;
11143
11144         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11145                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11146 }
11147
11148 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11149                                      struct net_device *netdev)
11150 {
11151         struct sk_buff *msg;
11152
11153         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11154         if (!msg)
11155                 return;
11156
11157         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11158                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11159                 nlmsg_free(msg);
11160                 return;
11161         }
11162
11163         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11164                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11165 }
11166
11167 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11168                              struct net_device *netdev, u32 cmd)
11169 {
11170         struct sk_buff *msg;
11171
11172         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11173         if (!msg)
11174                 return;
11175
11176         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11177                 nlmsg_free(msg);
11178                 return;
11179         }
11180
11181         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11182                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11183 }
11184
11185 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11186                                           struct regulatory_request *request)
11187 {
11188         /* Userspace can always count this one always being set */
11189         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11190                 goto nla_put_failure;
11191
11192         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11193                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11194                                NL80211_REGDOM_TYPE_WORLD))
11195                         goto nla_put_failure;
11196         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11197                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11198                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11199                         goto nla_put_failure;
11200         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11201                    request->intersect) {
11202                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11203                                NL80211_REGDOM_TYPE_INTERSECTION))
11204                         goto nla_put_failure;
11205         } else {
11206                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11207                                NL80211_REGDOM_TYPE_COUNTRY) ||
11208                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11209                                    request->alpha2))
11210                         goto nla_put_failure;
11211         }
11212
11213         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11214                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11215
11216                 if (wiphy &&
11217                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11218                         goto nla_put_failure;
11219
11220                 if (wiphy &&
11221                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11222                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11223                         goto nla_put_failure;
11224         }
11225
11226         return true;
11227
11228 nla_put_failure:
11229         return false;
11230 }
11231
11232 /*
11233  * This can happen on global regulatory changes or device specific settings
11234  * based on custom regulatory domains.
11235  */
11236 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11237                                      struct regulatory_request *request)
11238 {
11239         struct sk_buff *msg;
11240         void *hdr;
11241
11242         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11243         if (!msg)
11244                 return;
11245
11246         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11247         if (!hdr) {
11248                 nlmsg_free(msg);
11249                 return;
11250         }
11251
11252         if (nl80211_reg_change_event_fill(msg, request) == false)
11253                 goto nla_put_failure;
11254
11255         genlmsg_end(msg, hdr);
11256
11257         rcu_read_lock();
11258         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11259                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11260         rcu_read_unlock();
11261
11262         return;
11263
11264 nla_put_failure:
11265         genlmsg_cancel(msg, hdr);
11266         nlmsg_free(msg);
11267 }
11268
11269 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11270                                     struct net_device *netdev,
11271                                     const u8 *buf, size_t len,
11272                                     enum nl80211_commands cmd, gfp_t gfp,
11273                                     int uapsd_queues)
11274 {
11275         struct sk_buff *msg;
11276         void *hdr;
11277
11278         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11279         if (!msg)
11280                 return;
11281
11282         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11283         if (!hdr) {
11284                 nlmsg_free(msg);
11285                 return;
11286         }
11287
11288         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11289             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11290             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11291                 goto nla_put_failure;
11292
11293         if (uapsd_queues >= 0) {
11294                 struct nlattr *nla_wmm =
11295                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11296                 if (!nla_wmm)
11297                         goto nla_put_failure;
11298
11299                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11300                                uapsd_queues))
11301                         goto nla_put_failure;
11302
11303                 nla_nest_end(msg, nla_wmm);
11304         }
11305
11306         genlmsg_end(msg, hdr);
11307
11308         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11309                                 NL80211_MCGRP_MLME, gfp);
11310         return;
11311
11312  nla_put_failure:
11313         genlmsg_cancel(msg, hdr);
11314         nlmsg_free(msg);
11315 }
11316
11317 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11318                           struct net_device *netdev, const u8 *buf,
11319                           size_t len, gfp_t gfp)
11320 {
11321         nl80211_send_mlme_event(rdev, netdev, buf, len,
11322                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11323 }
11324
11325 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11326                            struct net_device *netdev, const u8 *buf,
11327                            size_t len, gfp_t gfp, int uapsd_queues)
11328 {
11329         nl80211_send_mlme_event(rdev, netdev, buf, len,
11330                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11331 }
11332
11333 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11334                          struct net_device *netdev, const u8 *buf,
11335                          size_t len, gfp_t gfp)
11336 {
11337         nl80211_send_mlme_event(rdev, netdev, buf, len,
11338                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11339 }
11340
11341 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11342                            struct net_device *netdev, const u8 *buf,
11343                            size_t len, gfp_t gfp)
11344 {
11345         nl80211_send_mlme_event(rdev, netdev, buf, len,
11346                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11347 }
11348
11349 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11350                                   size_t len)
11351 {
11352         struct wireless_dev *wdev = dev->ieee80211_ptr;
11353         struct wiphy *wiphy = wdev->wiphy;
11354         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11355         const struct ieee80211_mgmt *mgmt = (void *)buf;
11356         u32 cmd;
11357
11358         if (WARN_ON(len < 2))
11359                 return;
11360
11361         if (ieee80211_is_deauth(mgmt->frame_control))
11362                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11363         else
11364                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11365
11366         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11367         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11368 }
11369 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11370
11371 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11372                                       struct net_device *netdev, int cmd,
11373                                       const u8 *addr, gfp_t gfp)
11374 {
11375         struct sk_buff *msg;
11376         void *hdr;
11377
11378         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11379         if (!msg)
11380                 return;
11381
11382         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11383         if (!hdr) {
11384                 nlmsg_free(msg);
11385                 return;
11386         }
11387
11388         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11389             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11390             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11391             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11392                 goto nla_put_failure;
11393
11394         genlmsg_end(msg, hdr);
11395
11396         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11397                                 NL80211_MCGRP_MLME, gfp);
11398         return;
11399
11400  nla_put_failure:
11401         genlmsg_cancel(msg, hdr);
11402         nlmsg_free(msg);
11403 }
11404
11405 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11406                                struct net_device *netdev, const u8 *addr,
11407                                gfp_t gfp)
11408 {
11409         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11410                                   addr, gfp);
11411 }
11412
11413 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11414                                 struct net_device *netdev, const u8 *addr,
11415                                 gfp_t gfp)
11416 {
11417         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11418                                   addr, gfp);
11419 }
11420
11421 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11422                                  struct net_device *netdev, const u8 *bssid,
11423                                  const u8 *req_ie, size_t req_ie_len,
11424                                  const u8 *resp_ie, size_t resp_ie_len,
11425                                  u16 status, gfp_t gfp)
11426 {
11427         struct sk_buff *msg;
11428         void *hdr;
11429
11430         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11431         if (!msg)
11432                 return;
11433
11434         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11435         if (!hdr) {
11436                 nlmsg_free(msg);
11437                 return;
11438         }
11439
11440         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11441             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11442             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11443             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11444             (req_ie &&
11445              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11446             (resp_ie &&
11447              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11448                 goto nla_put_failure;
11449
11450         genlmsg_end(msg, hdr);
11451
11452         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11453                                 NL80211_MCGRP_MLME, gfp);
11454         return;
11455
11456  nla_put_failure:
11457         genlmsg_cancel(msg, hdr);
11458         nlmsg_free(msg);
11459
11460 }
11461
11462 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11463                          struct net_device *netdev, const u8 *bssid,
11464                          const u8 *req_ie, size_t req_ie_len,
11465                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11466 {
11467         struct sk_buff *msg;
11468         void *hdr;
11469
11470         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11471         if (!msg)
11472                 return;
11473
11474         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11475         if (!hdr) {
11476                 nlmsg_free(msg);
11477                 return;
11478         }
11479
11480         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11481             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11482             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11483             (req_ie &&
11484              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11485             (resp_ie &&
11486              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11487                 goto nla_put_failure;
11488
11489         genlmsg_end(msg, hdr);
11490
11491         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11492                                 NL80211_MCGRP_MLME, gfp);
11493         return;
11494
11495  nla_put_failure:
11496         genlmsg_cancel(msg, hdr);
11497         nlmsg_free(msg);
11498
11499 }
11500
11501 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11502                                struct net_device *netdev, u16 reason,
11503                                const u8 *ie, size_t ie_len, bool from_ap)
11504 {
11505         struct sk_buff *msg;
11506         void *hdr;
11507
11508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11509         if (!msg)
11510                 return;
11511
11512         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11513         if (!hdr) {
11514                 nlmsg_free(msg);
11515                 return;
11516         }
11517
11518         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11519             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11520             (from_ap && reason &&
11521              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11522             (from_ap &&
11523              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11524             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11525                 goto nla_put_failure;
11526
11527         genlmsg_end(msg, hdr);
11528
11529         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11530                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11531         return;
11532
11533  nla_put_failure:
11534         genlmsg_cancel(msg, hdr);
11535         nlmsg_free(msg);
11536
11537 }
11538
11539 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11540                              struct net_device *netdev, const u8 *bssid,
11541                              gfp_t gfp)
11542 {
11543         struct sk_buff *msg;
11544         void *hdr;
11545
11546         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11547         if (!msg)
11548                 return;
11549
11550         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11551         if (!hdr) {
11552                 nlmsg_free(msg);
11553                 return;
11554         }
11555
11556         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11557             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11558             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11559                 goto nla_put_failure;
11560
11561         genlmsg_end(msg, hdr);
11562
11563         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11564                                 NL80211_MCGRP_MLME, gfp);
11565         return;
11566
11567  nla_put_failure:
11568         genlmsg_cancel(msg, hdr);
11569         nlmsg_free(msg);
11570 }
11571
11572 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11573                                         const u8* ie, u8 ie_len, gfp_t gfp)
11574 {
11575         struct wireless_dev *wdev = dev->ieee80211_ptr;
11576         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11577         struct sk_buff *msg;
11578         void *hdr;
11579
11580         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11581                 return;
11582
11583         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11584
11585         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11586         if (!msg)
11587                 return;
11588
11589         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11590         if (!hdr) {
11591                 nlmsg_free(msg);
11592                 return;
11593         }
11594
11595         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11596             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11597             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11598             (ie_len && ie &&
11599              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11600                 goto nla_put_failure;
11601
11602         genlmsg_end(msg, hdr);
11603
11604         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11605                                 NL80211_MCGRP_MLME, gfp);
11606         return;
11607
11608  nla_put_failure:
11609         genlmsg_cancel(msg, hdr);
11610         nlmsg_free(msg);
11611 }
11612 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11613
11614 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11615                                  struct net_device *netdev, const u8 *addr,
11616                                  enum nl80211_key_type key_type, int key_id,
11617                                  const u8 *tsc, gfp_t gfp)
11618 {
11619         struct sk_buff *msg;
11620         void *hdr;
11621
11622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11623         if (!msg)
11624                 return;
11625
11626         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11627         if (!hdr) {
11628                 nlmsg_free(msg);
11629                 return;
11630         }
11631
11632         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11633             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11634             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11635             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11636             (key_id != -1 &&
11637              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11638             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11639                 goto nla_put_failure;
11640
11641         genlmsg_end(msg, hdr);
11642
11643         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11644                                 NL80211_MCGRP_MLME, gfp);
11645         return;
11646
11647  nla_put_failure:
11648         genlmsg_cancel(msg, hdr);
11649         nlmsg_free(msg);
11650 }
11651
11652 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11653                                     struct ieee80211_channel *channel_before,
11654                                     struct ieee80211_channel *channel_after)
11655 {
11656         struct sk_buff *msg;
11657         void *hdr;
11658         struct nlattr *nl_freq;
11659
11660         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11661         if (!msg)
11662                 return;
11663
11664         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11665         if (!hdr) {
11666                 nlmsg_free(msg);
11667                 return;
11668         }
11669
11670         /*
11671          * Since we are applying the beacon hint to a wiphy we know its
11672          * wiphy_idx is valid
11673          */
11674         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11675                 goto nla_put_failure;
11676
11677         /* Before */
11678         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11679         if (!nl_freq)
11680                 goto nla_put_failure;
11681         if (nl80211_msg_put_channel(msg, channel_before, false))
11682                 goto nla_put_failure;
11683         nla_nest_end(msg, nl_freq);
11684
11685         /* After */
11686         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11687         if (!nl_freq)
11688                 goto nla_put_failure;
11689         if (nl80211_msg_put_channel(msg, channel_after, false))
11690                 goto nla_put_failure;
11691         nla_nest_end(msg, nl_freq);
11692
11693         genlmsg_end(msg, hdr);
11694
11695         rcu_read_lock();
11696         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11697                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11698         rcu_read_unlock();
11699
11700         return;
11701
11702 nla_put_failure:
11703         genlmsg_cancel(msg, hdr);
11704         nlmsg_free(msg);
11705 }
11706
11707 static void nl80211_send_remain_on_chan_event(
11708         int cmd, struct cfg80211_registered_device *rdev,
11709         struct wireless_dev *wdev, u64 cookie,
11710         struct ieee80211_channel *chan,
11711         unsigned int duration, gfp_t gfp)
11712 {
11713         struct sk_buff *msg;
11714         void *hdr;
11715
11716         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11717         if (!msg)
11718                 return;
11719
11720         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11721         if (!hdr) {
11722                 nlmsg_free(msg);
11723                 return;
11724         }
11725
11726         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11727             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11728                                          wdev->netdev->ifindex)) ||
11729             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11730             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11731             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11732                         NL80211_CHAN_NO_HT) ||
11733             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11734                 goto nla_put_failure;
11735
11736         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11737             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11738                 goto nla_put_failure;
11739
11740         genlmsg_end(msg, hdr);
11741
11742         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11743                                 NL80211_MCGRP_MLME, gfp);
11744         return;
11745
11746  nla_put_failure:
11747         genlmsg_cancel(msg, hdr);
11748         nlmsg_free(msg);
11749 }
11750
11751 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11752                                struct ieee80211_channel *chan,
11753                                unsigned int duration, gfp_t gfp)
11754 {
11755         struct wiphy *wiphy = wdev->wiphy;
11756         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11757
11758         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11759         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11760                                           rdev, wdev, cookie, chan,
11761                                           duration, gfp);
11762 }
11763 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11764
11765 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11766                                         struct ieee80211_channel *chan,
11767                                         gfp_t gfp)
11768 {
11769         struct wiphy *wiphy = wdev->wiphy;
11770         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11771
11772         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11773         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11774                                           rdev, wdev, cookie, chan, 0, gfp);
11775 }
11776 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11777
11778 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11779                       struct station_info *sinfo, gfp_t gfp)
11780 {
11781         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11782         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11783         struct sk_buff *msg;
11784
11785         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11786
11787         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11788         if (!msg)
11789                 return;
11790
11791         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11792                                  rdev, dev, mac_addr, sinfo) < 0) {
11793                 nlmsg_free(msg);
11794                 return;
11795         }
11796
11797         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11798                                 NL80211_MCGRP_MLME, gfp);
11799 }
11800 EXPORT_SYMBOL(cfg80211_new_sta);
11801
11802 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11803                             struct station_info *sinfo, gfp_t gfp)
11804 {
11805         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11806         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11807         struct sk_buff *msg;
11808         struct station_info empty_sinfo = {};
11809
11810         if (!sinfo)
11811                 sinfo = &empty_sinfo;
11812
11813         trace_cfg80211_del_sta(dev, mac_addr);
11814
11815         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11816         if (!msg)
11817                 return;
11818
11819         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11820                                  rdev, dev, mac_addr, sinfo) < 0) {
11821                 nlmsg_free(msg);
11822                 return;
11823         }
11824
11825         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11826                                 NL80211_MCGRP_MLME, gfp);
11827 }
11828 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11829
11830 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11831                           enum nl80211_connect_failed_reason reason,
11832                           gfp_t gfp)
11833 {
11834         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11835         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11836         struct sk_buff *msg;
11837         void *hdr;
11838
11839         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11840         if (!msg)
11841                 return;
11842
11843         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11844         if (!hdr) {
11845                 nlmsg_free(msg);
11846                 return;
11847         }
11848
11849         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11850             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11851             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11852                 goto nla_put_failure;
11853
11854         genlmsg_end(msg, hdr);
11855
11856         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11857                                 NL80211_MCGRP_MLME, gfp);
11858         return;
11859
11860  nla_put_failure:
11861         genlmsg_cancel(msg, hdr);
11862         nlmsg_free(msg);
11863 }
11864 EXPORT_SYMBOL(cfg80211_conn_failed);
11865
11866 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11867                                        const u8 *addr, gfp_t gfp)
11868 {
11869         struct wireless_dev *wdev = dev->ieee80211_ptr;
11870         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11871         struct sk_buff *msg;
11872         void *hdr;
11873         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11874
11875         if (!nlportid)
11876                 return false;
11877
11878         msg = nlmsg_new(100, gfp);
11879         if (!msg)
11880                 return true;
11881
11882         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11883         if (!hdr) {
11884                 nlmsg_free(msg);
11885                 return true;
11886         }
11887
11888         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11889             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11890             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11891                 goto nla_put_failure;
11892
11893         genlmsg_end(msg, hdr);
11894         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11895         return true;
11896
11897  nla_put_failure:
11898         genlmsg_cancel(msg, hdr);
11899         nlmsg_free(msg);
11900         return true;
11901 }
11902
11903 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11904                                 const u8 *addr, gfp_t gfp)
11905 {
11906         struct wireless_dev *wdev = dev->ieee80211_ptr;
11907         bool ret;
11908
11909         trace_cfg80211_rx_spurious_frame(dev, addr);
11910
11911         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11912                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11913                 trace_cfg80211_return_bool(false);
11914                 return false;
11915         }
11916         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11917                                          addr, gfp);
11918         trace_cfg80211_return_bool(ret);
11919         return ret;
11920 }
11921 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11922
11923 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11924                                         const u8 *addr, gfp_t gfp)
11925 {
11926         struct wireless_dev *wdev = dev->ieee80211_ptr;
11927         bool ret;
11928
11929         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11930
11931         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11932                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11933                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11934                 trace_cfg80211_return_bool(false);
11935                 return false;
11936         }
11937         ret = __nl80211_unexpected_frame(dev,
11938                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11939                                          addr, gfp);
11940         trace_cfg80211_return_bool(ret);
11941         return ret;
11942 }
11943 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11944
11945 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11946                       struct wireless_dev *wdev, u32 nlportid,
11947                       int freq, int sig_dbm,
11948                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11949 {
11950         struct net_device *netdev = wdev->netdev;
11951         struct sk_buff *msg;
11952         void *hdr;
11953
11954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11955         if (!msg)
11956                 return -ENOMEM;
11957
11958         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11959         if (!hdr) {
11960                 nlmsg_free(msg);
11961                 return -ENOMEM;
11962         }
11963
11964         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11965             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11966                                         netdev->ifindex)) ||
11967             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11968             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11969             (sig_dbm &&
11970              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11971             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11972             (flags &&
11973              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11974                 goto nla_put_failure;
11975
11976         genlmsg_end(msg, hdr);
11977
11978         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11979
11980  nla_put_failure:
11981         genlmsg_cancel(msg, hdr);
11982         nlmsg_free(msg);
11983         return -ENOBUFS;
11984 }
11985
11986 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11987                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11988 {
11989         struct wiphy *wiphy = wdev->wiphy;
11990         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11991         struct net_device *netdev = wdev->netdev;
11992         struct sk_buff *msg;
11993         void *hdr;
11994
11995         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11996
11997         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11998         if (!msg)
11999                 return;
12000
12001         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12002         if (!hdr) {
12003                 nlmsg_free(msg);
12004                 return;
12005         }
12006
12007         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12008             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12009                                    netdev->ifindex)) ||
12010             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12011             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12012             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12013             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12014                 goto nla_put_failure;
12015
12016         genlmsg_end(msg, hdr);
12017
12018         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12019                                 NL80211_MCGRP_MLME, gfp);
12020         return;
12021
12022  nla_put_failure:
12023         genlmsg_cancel(msg, hdr);
12024         nlmsg_free(msg);
12025 }
12026 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12027
12028 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12029                                             const char *mac, gfp_t gfp)
12030 {
12031         struct wireless_dev *wdev = dev->ieee80211_ptr;
12032         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12033         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12034         void **cb;
12035
12036         if (!msg)
12037                 return NULL;
12038
12039         cb = (void **)msg->cb;
12040
12041         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12042         if (!cb[0]) {
12043                 nlmsg_free(msg);
12044                 return NULL;
12045         }
12046
12047         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12048             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12049                 goto nla_put_failure;
12050
12051         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12052                 goto nla_put_failure;
12053
12054         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12055         if (!cb[1])
12056                 goto nla_put_failure;
12057
12058         cb[2] = rdev;
12059
12060         return msg;
12061  nla_put_failure:
12062         nlmsg_free(msg);
12063         return NULL;
12064 }
12065
12066 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12067 {
12068         void **cb = (void **)msg->cb;
12069         struct cfg80211_registered_device *rdev = cb[2];
12070
12071         nla_nest_end(msg, cb[1]);
12072         genlmsg_end(msg, cb[0]);
12073
12074         memset(msg->cb, 0, sizeof(msg->cb));
12075
12076         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12077                                 NL80211_MCGRP_MLME, gfp);
12078 }
12079
12080 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12081                               enum nl80211_cqm_rssi_threshold_event rssi_event,
12082                               gfp_t gfp)
12083 {
12084         struct sk_buff *msg;
12085
12086         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12087
12088         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12089                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12090                 return;
12091
12092         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12093         if (!msg)
12094                 return;
12095
12096         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12097                         rssi_event))
12098                 goto nla_put_failure;
12099
12100         cfg80211_send_cqm(msg, gfp);
12101
12102         return;
12103
12104  nla_put_failure:
12105         nlmsg_free(msg);
12106 }
12107 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12108
12109 void cfg80211_cqm_txe_notify(struct net_device *dev,
12110                              const u8 *peer, u32 num_packets,
12111                              u32 rate, u32 intvl, gfp_t gfp)
12112 {
12113         struct sk_buff *msg;
12114
12115         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12116         if (!msg)
12117                 return;
12118
12119         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12120                 goto nla_put_failure;
12121
12122         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12123                 goto nla_put_failure;
12124
12125         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12126                 goto nla_put_failure;
12127
12128         cfg80211_send_cqm(msg, gfp);
12129         return;
12130
12131  nla_put_failure:
12132         nlmsg_free(msg);
12133 }
12134 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12135
12136 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12137                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12138 {
12139         struct sk_buff *msg;
12140
12141         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12142
12143         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12144         if (!msg)
12145                 return;
12146
12147         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12148                 goto nla_put_failure;
12149
12150         cfg80211_send_cqm(msg, gfp);
12151         return;
12152
12153  nla_put_failure:
12154         nlmsg_free(msg);
12155 }
12156 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12157
12158 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12159 {
12160         struct sk_buff *msg;
12161
12162         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12163         if (!msg)
12164                 return;
12165
12166         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12167                 goto nla_put_failure;
12168
12169         cfg80211_send_cqm(msg, gfp);
12170         return;
12171
12172  nla_put_failure:
12173         nlmsg_free(msg);
12174 }
12175 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12176
12177 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12178                                      struct net_device *netdev, const u8 *bssid,
12179                                      const u8 *replay_ctr, gfp_t gfp)
12180 {
12181         struct sk_buff *msg;
12182         struct nlattr *rekey_attr;
12183         void *hdr;
12184
12185         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12186         if (!msg)
12187                 return;
12188
12189         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12190         if (!hdr) {
12191                 nlmsg_free(msg);
12192                 return;
12193         }
12194
12195         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12196             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12197             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12198                 goto nla_put_failure;
12199
12200         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12201         if (!rekey_attr)
12202                 goto nla_put_failure;
12203
12204         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12205                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12206                 goto nla_put_failure;
12207
12208         nla_nest_end(msg, rekey_attr);
12209
12210         genlmsg_end(msg, hdr);
12211
12212         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12213                                 NL80211_MCGRP_MLME, gfp);
12214         return;
12215
12216  nla_put_failure:
12217         genlmsg_cancel(msg, hdr);
12218         nlmsg_free(msg);
12219 }
12220
12221 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12222                                const u8 *replay_ctr, gfp_t gfp)
12223 {
12224         struct wireless_dev *wdev = dev->ieee80211_ptr;
12225         struct wiphy *wiphy = wdev->wiphy;
12226         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12227
12228         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12229         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12230 }
12231 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12232
12233 static void
12234 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12235                                struct net_device *netdev, int index,
12236                                const u8 *bssid, bool preauth, gfp_t gfp)
12237 {
12238         struct sk_buff *msg;
12239         struct nlattr *attr;
12240         void *hdr;
12241
12242         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12243         if (!msg)
12244                 return;
12245
12246         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12247         if (!hdr) {
12248                 nlmsg_free(msg);
12249                 return;
12250         }
12251
12252         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12253             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12254                 goto nla_put_failure;
12255
12256         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12257         if (!attr)
12258                 goto nla_put_failure;
12259
12260         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12261             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12262             (preauth &&
12263              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12264                 goto nla_put_failure;
12265
12266         nla_nest_end(msg, attr);
12267
12268         genlmsg_end(msg, hdr);
12269
12270         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12271                                 NL80211_MCGRP_MLME, gfp);
12272         return;
12273
12274  nla_put_failure:
12275         genlmsg_cancel(msg, hdr);
12276         nlmsg_free(msg);
12277 }
12278
12279 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12280                                      const u8 *bssid, bool preauth, gfp_t gfp)
12281 {
12282         struct wireless_dev *wdev = dev->ieee80211_ptr;
12283         struct wiphy *wiphy = wdev->wiphy;
12284         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12285
12286         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12287         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12288 }
12289 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12290
12291 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12292                                      struct net_device *netdev,
12293                                      struct cfg80211_chan_def *chandef,
12294                                      gfp_t gfp,
12295                                      enum nl80211_commands notif,
12296                                      u8 count)
12297 {
12298         struct sk_buff *msg;
12299         void *hdr;
12300
12301         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12302         if (!msg)
12303                 return;
12304
12305         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12306         if (!hdr) {
12307                 nlmsg_free(msg);
12308                 return;
12309         }
12310
12311         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12312                 goto nla_put_failure;
12313
12314         if (nl80211_send_chandef(msg, chandef))
12315                 goto nla_put_failure;
12316
12317         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12318             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12319                         goto nla_put_failure;
12320
12321         genlmsg_end(msg, hdr);
12322
12323         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12324                                 NL80211_MCGRP_MLME, gfp);
12325         return;
12326
12327  nla_put_failure:
12328         genlmsg_cancel(msg, hdr);
12329         nlmsg_free(msg);
12330 }
12331
12332 void cfg80211_ch_switch_notify(struct net_device *dev,
12333                                struct cfg80211_chan_def *chandef)
12334 {
12335         struct wireless_dev *wdev = dev->ieee80211_ptr;
12336         struct wiphy *wiphy = wdev->wiphy;
12337         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12338
12339         ASSERT_WDEV_LOCK(wdev);
12340
12341         trace_cfg80211_ch_switch_notify(dev, chandef);
12342
12343         wdev->chandef = *chandef;
12344         wdev->preset_chandef = *chandef;
12345         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12346                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12347 }
12348 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12349
12350 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12351                                        struct cfg80211_chan_def *chandef,
12352                                        u8 count)
12353 {
12354         struct wireless_dev *wdev = dev->ieee80211_ptr;
12355         struct wiphy *wiphy = wdev->wiphy;
12356         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12357
12358         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12359
12360         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12361                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12362 }
12363 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12364
12365 void
12366 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12367                      const struct cfg80211_chan_def *chandef,
12368                      enum nl80211_radar_event event,
12369                      struct net_device *netdev, gfp_t gfp)
12370 {
12371         struct sk_buff *msg;
12372         void *hdr;
12373
12374         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12375         if (!msg)
12376                 return;
12377
12378         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12379         if (!hdr) {
12380                 nlmsg_free(msg);
12381                 return;
12382         }
12383
12384         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12385                 goto nla_put_failure;
12386
12387         /* NOP and radar events don't need a netdev parameter */
12388         if (netdev) {
12389                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12390
12391                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12392                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12393                         goto nla_put_failure;
12394         }
12395
12396         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12397                 goto nla_put_failure;
12398
12399         if (nl80211_send_chandef(msg, chandef))
12400                 goto nla_put_failure;
12401
12402         genlmsg_end(msg, hdr);
12403
12404         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12405                                 NL80211_MCGRP_MLME, gfp);
12406         return;
12407
12408  nla_put_failure:
12409         genlmsg_cancel(msg, hdr);
12410         nlmsg_free(msg);
12411 }
12412
12413 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12414                            u64 cookie, bool acked, gfp_t gfp)
12415 {
12416         struct wireless_dev *wdev = dev->ieee80211_ptr;
12417         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12418         struct sk_buff *msg;
12419         void *hdr;
12420
12421         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12422
12423         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12424
12425         if (!msg)
12426                 return;
12427
12428         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12429         if (!hdr) {
12430                 nlmsg_free(msg);
12431                 return;
12432         }
12433
12434         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12435             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12436             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12437             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12438             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12439                 goto nla_put_failure;
12440
12441         genlmsg_end(msg, hdr);
12442
12443         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12444                                 NL80211_MCGRP_MLME, gfp);
12445         return;
12446
12447  nla_put_failure:
12448         genlmsg_cancel(msg, hdr);
12449         nlmsg_free(msg);
12450 }
12451 EXPORT_SYMBOL(cfg80211_probe_status);
12452
12453 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12454                                  const u8 *frame, size_t len,
12455                                  int freq, int sig_dbm)
12456 {
12457         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12458         struct sk_buff *msg;
12459         void *hdr;
12460         struct cfg80211_beacon_registration *reg;
12461
12462         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12463
12464         spin_lock_bh(&rdev->beacon_registrations_lock);
12465         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12466                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12467                 if (!msg) {
12468                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12469                         return;
12470                 }
12471
12472                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12473                 if (!hdr)
12474                         goto nla_put_failure;
12475
12476                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12477                     (freq &&
12478                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12479                     (sig_dbm &&
12480                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12481                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12482                         goto nla_put_failure;
12483
12484                 genlmsg_end(msg, hdr);
12485
12486                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12487         }
12488         spin_unlock_bh(&rdev->beacon_registrations_lock);
12489         return;
12490
12491  nla_put_failure:
12492         spin_unlock_bh(&rdev->beacon_registrations_lock);
12493         if (hdr)
12494                 genlmsg_cancel(msg, hdr);
12495         nlmsg_free(msg);
12496 }
12497 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12498
12499 #ifdef CONFIG_PM
12500 static int cfg80211_net_detect_results(struct sk_buff *msg,
12501                                        struct cfg80211_wowlan_wakeup *wakeup)
12502 {
12503         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12504         struct nlattr *nl_results, *nl_match, *nl_freqs;
12505         int i, j;
12506
12507         nl_results = nla_nest_start(
12508                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12509         if (!nl_results)
12510                 return -EMSGSIZE;
12511
12512         for (i = 0; i < nd->n_matches; i++) {
12513                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12514
12515                 nl_match = nla_nest_start(msg, i);
12516                 if (!nl_match)
12517                         break;
12518
12519                 /* The SSID attribute is optional in nl80211, but for
12520                  * simplicity reasons it's always present in the
12521                  * cfg80211 structure.  If a driver can't pass the
12522                  * SSID, that needs to be changed.  A zero length SSID
12523                  * is still a valid SSID (wildcard), so it cannot be
12524                  * used for this purpose.
12525                  */
12526                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12527                             match->ssid.ssid)) {
12528                         nla_nest_cancel(msg, nl_match);
12529                         goto out;
12530                 }
12531
12532                 if (match->n_channels) {
12533                         nl_freqs = nla_nest_start(
12534                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12535                         if (!nl_freqs) {
12536                                 nla_nest_cancel(msg, nl_match);
12537                                 goto out;
12538                         }
12539
12540                         for (j = 0; j < match->n_channels; j++) {
12541                                 if (nla_put_u32(msg, j, match->channels[j])) {
12542                                         nla_nest_cancel(msg, nl_freqs);
12543                                         nla_nest_cancel(msg, nl_match);
12544                                         goto out;
12545                                 }
12546                         }
12547
12548                         nla_nest_end(msg, nl_freqs);
12549                 }
12550
12551                 nla_nest_end(msg, nl_match);
12552         }
12553
12554 out:
12555         nla_nest_end(msg, nl_results);
12556         return 0;
12557 }
12558
12559 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12560                                    struct cfg80211_wowlan_wakeup *wakeup,
12561                                    gfp_t gfp)
12562 {
12563         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12564         struct sk_buff *msg;
12565         void *hdr;
12566         int size = 200;
12567
12568         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12569
12570         if (wakeup)
12571                 size += wakeup->packet_present_len;
12572
12573         msg = nlmsg_new(size, gfp);
12574         if (!msg)
12575                 return;
12576
12577         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12578         if (!hdr)
12579                 goto free_msg;
12580
12581         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12582             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12583                 goto free_msg;
12584
12585         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12586                                         wdev->netdev->ifindex))
12587                 goto free_msg;
12588
12589         if (wakeup) {
12590                 struct nlattr *reasons;
12591
12592                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12593                 if (!reasons)
12594                         goto free_msg;
12595
12596                 if (wakeup->disconnect &&
12597                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12598                         goto free_msg;
12599                 if (wakeup->magic_pkt &&
12600                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12601                         goto free_msg;
12602                 if (wakeup->gtk_rekey_failure &&
12603                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12604                         goto free_msg;
12605                 if (wakeup->eap_identity_req &&
12606                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12607                         goto free_msg;
12608                 if (wakeup->four_way_handshake &&
12609                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12610                         goto free_msg;
12611                 if (wakeup->rfkill_release &&
12612                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12613                         goto free_msg;
12614
12615                 if (wakeup->pattern_idx >= 0 &&
12616                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12617                                 wakeup->pattern_idx))
12618                         goto free_msg;
12619
12620                 if (wakeup->tcp_match &&
12621                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12622                         goto free_msg;
12623
12624                 if (wakeup->tcp_connlost &&
12625                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12626                         goto free_msg;
12627
12628                 if (wakeup->tcp_nomoretokens &&
12629                     nla_put_flag(msg,
12630                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12631                         goto free_msg;
12632
12633                 if (wakeup->packet) {
12634                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12635                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12636
12637                         if (!wakeup->packet_80211) {
12638                                 pkt_attr =
12639                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12640                                 len_attr =
12641                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12642                         }
12643
12644                         if (wakeup->packet_len &&
12645                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12646                                 goto free_msg;
12647
12648                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12649                                     wakeup->packet))
12650                                 goto free_msg;
12651                 }
12652
12653                 if (wakeup->net_detect &&
12654                     cfg80211_net_detect_results(msg, wakeup))
12655                                 goto free_msg;
12656
12657                 nla_nest_end(msg, reasons);
12658         }
12659
12660         genlmsg_end(msg, hdr);
12661
12662         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12663                                 NL80211_MCGRP_MLME, gfp);
12664         return;
12665
12666  free_msg:
12667         nlmsg_free(msg);
12668 }
12669 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12670 #endif
12671
12672 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12673                                 enum nl80211_tdls_operation oper,
12674                                 u16 reason_code, gfp_t gfp)
12675 {
12676         struct wireless_dev *wdev = dev->ieee80211_ptr;
12677         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12678         struct sk_buff *msg;
12679         void *hdr;
12680
12681         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12682                                          reason_code);
12683
12684         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12685         if (!msg)
12686                 return;
12687
12688         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12689         if (!hdr) {
12690                 nlmsg_free(msg);
12691                 return;
12692         }
12693
12694         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12695             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12696             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12697             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12698             (reason_code > 0 &&
12699              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12700                 goto nla_put_failure;
12701
12702         genlmsg_end(msg, hdr);
12703
12704         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12705                                 NL80211_MCGRP_MLME, gfp);
12706         return;
12707
12708  nla_put_failure:
12709         genlmsg_cancel(msg, hdr);
12710         nlmsg_free(msg);
12711 }
12712 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12713
12714 static int nl80211_netlink_notify(struct notifier_block * nb,
12715                                   unsigned long state,
12716                                   void *_notify)
12717 {
12718         struct netlink_notify *notify = _notify;
12719         struct cfg80211_registered_device *rdev;
12720         struct wireless_dev *wdev;
12721         struct cfg80211_beacon_registration *reg, *tmp;
12722
12723         if (state != NETLINK_URELEASE)
12724                 return NOTIFY_DONE;
12725
12726         rcu_read_lock();
12727
12728         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12729                 bool schedule_destroy_work = false;
12730                 bool schedule_scan_stop = false;
12731                 struct cfg80211_sched_scan_request *sched_scan_req =
12732                         rcu_dereference(rdev->sched_scan_req);
12733
12734                 if (sched_scan_req && notify->portid &&
12735                     sched_scan_req->owner_nlportid == notify->portid)
12736                         schedule_scan_stop = true;
12737
12738                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12739                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12740
12741                         if (wdev->owner_nlportid == notify->portid)
12742                                 schedule_destroy_work = true;
12743                 }
12744
12745                 spin_lock_bh(&rdev->beacon_registrations_lock);
12746                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12747                                          list) {
12748                         if (reg->nlportid == notify->portid) {
12749                                 list_del(&reg->list);
12750                                 kfree(reg);
12751                                 break;
12752                         }
12753                 }
12754                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12755
12756                 if (schedule_destroy_work) {
12757                         struct cfg80211_iface_destroy *destroy;
12758
12759                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12760                         if (destroy) {
12761                                 destroy->nlportid = notify->portid;
12762                                 spin_lock(&rdev->destroy_list_lock);
12763                                 list_add(&destroy->list, &rdev->destroy_list);
12764                                 spin_unlock(&rdev->destroy_list_lock);
12765                                 schedule_work(&rdev->destroy_work);
12766                         }
12767                 } else if (schedule_scan_stop) {
12768                         sched_scan_req->owner_nlportid = 0;
12769
12770                         if (rdev->ops->sched_scan_stop &&
12771                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12772                                 schedule_work(&rdev->sched_scan_stop_wk);
12773                 }
12774         }
12775
12776         rcu_read_unlock();
12777
12778         return NOTIFY_OK;
12779 }
12780
12781 static struct notifier_block nl80211_netlink_notifier = {
12782         .notifier_call = nl80211_netlink_notify,
12783 };
12784
12785 void cfg80211_ft_event(struct net_device *netdev,
12786                        struct cfg80211_ft_event_params *ft_event)
12787 {
12788         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12789         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12790         struct sk_buff *msg;
12791         void *hdr;
12792
12793         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12794
12795         if (!ft_event->target_ap)
12796                 return;
12797
12798         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12799         if (!msg)
12800                 return;
12801
12802         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12803         if (!hdr)
12804                 goto out;
12805
12806         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12807             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12808             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12809                 goto out;
12810
12811         if (ft_event->ies &&
12812             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12813                 goto out;
12814         if (ft_event->ric_ies &&
12815             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12816                     ft_event->ric_ies))
12817                 goto out;
12818
12819         genlmsg_end(msg, hdr);
12820
12821         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12822                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12823         return;
12824  out:
12825         nlmsg_free(msg);
12826 }
12827 EXPORT_SYMBOL(cfg80211_ft_event);
12828
12829 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12830 {
12831         struct cfg80211_registered_device *rdev;
12832         struct sk_buff *msg;
12833         void *hdr;
12834         u32 nlportid;
12835
12836         rdev = wiphy_to_rdev(wdev->wiphy);
12837         if (!rdev->crit_proto_nlportid)
12838                 return;
12839
12840         nlportid = rdev->crit_proto_nlportid;
12841         rdev->crit_proto_nlportid = 0;
12842
12843         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12844         if (!msg)
12845                 return;
12846
12847         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12848         if (!hdr)
12849                 goto nla_put_failure;
12850
12851         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12852             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12853                 goto nla_put_failure;
12854
12855         genlmsg_end(msg, hdr);
12856
12857         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12858         return;
12859
12860  nla_put_failure:
12861         if (hdr)
12862                 genlmsg_cancel(msg, hdr);
12863         nlmsg_free(msg);
12864
12865 }
12866 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12867
12868 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12869 {
12870         struct wiphy *wiphy = wdev->wiphy;
12871         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12872         struct sk_buff *msg;
12873         void *hdr;
12874
12875         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12876         if (!msg)
12877                 return;
12878
12879         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12880         if (!hdr)
12881                 goto out;
12882
12883         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12884             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12885             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12886                 goto out;
12887
12888         genlmsg_end(msg, hdr);
12889
12890         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12891                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12892         return;
12893  out:
12894         nlmsg_free(msg);
12895 }
12896
12897 /* initialisation/exit functions */
12898
12899 int nl80211_init(void)
12900 {
12901         int err;
12902
12903         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12904                                                    nl80211_mcgrps);
12905         if (err)
12906                 return err;
12907
12908         err = netlink_register_notifier(&nl80211_netlink_notifier);
12909         if (err)
12910                 goto err_out;
12911
12912         return 0;
12913  err_out:
12914         genl_unregister_family(&nl80211_fam);
12915         return err;
12916 }
12917
12918 void nl80211_exit(void)
12919 {
12920         netlink_unregister_notifier(&nl80211_netlink_notifier);
12921         genl_unregister_family(&nl80211_fam);
12922 }