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 };
 401
 402 /* policy for the key attributes */
 403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 404         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 405         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 406         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 407         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 408         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 409         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 410         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 411         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 412 };
 413
 414 /* policy for the key default flags */
 415 static const struct nla_policy
 416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 417         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 418         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 419 };
 420
 421 /* policy for WoWLAN attributes */
 422 static const struct nla_policy
 423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 424         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 425         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 426         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 427         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 428         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 433         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 434 };
 435
 436 static const struct nla_policy
 437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 438         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 439         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 440         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 441         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 442         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 443         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 444         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 445                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 446         },
 447         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 448                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 449         },
 450         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 451         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 452         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 453 };
 454
 455 /* policy for coalesce rule attributes */
 456 static const struct nla_policy
 457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 458         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 459         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 460         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 461 };
 462
 463 /* policy for GTK rekey offload attributes */
 464 static const struct nla_policy
 465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 466         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 467         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 468         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 469 };
 470
 471 static const struct nla_policy
 472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 473         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 474                                                  .len = IEEE80211_MAX_SSID_LEN },
 475         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 476 };
 477
 478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 479                                      struct netlink_callback *cb,
 480                                      struct cfg80211_registered_device **rdev,
 481                                      struct wireless_dev **wdev)
 482 {
 483         int err;
 484
 485         rtnl_lock();
 486
 487         if (!cb->args[0]) {
 488                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 489                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 490                                   nl80211_policy);
 491                 if (err)
 492                         goto out_unlock;
 493
 494                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 495                                                    nl80211_fam.attrbuf);
 496                 if (IS_ERR(*wdev)) {
 497                         err = PTR_ERR(*wdev);
 498                         goto out_unlock;
 499                 }
 500                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 501                 /* 0 is the first index - add 1 to parse only once */
 502                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 503                 cb->args[1] = (*wdev)->identifier;
 504         } else {
 505                 /* subtract the 1 again here */
 506                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 507                 struct wireless_dev *tmp;
 508
 509                 if (!wiphy) {
 510                         err = -ENODEV;
 511                         goto out_unlock;
 512                 }
 513                 *rdev = wiphy_to_rdev(wiphy);
 514                 *wdev = NULL;
 515
 516                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 517                         if (tmp->identifier == cb->args[1]) {
 518                                 *wdev = tmp;
 519                                 break;
 520                         }
 521                 }
 522
 523                 if (!*wdev) {
 524                         err = -ENODEV;
 525                         goto out_unlock;
 526                 }
 527         }
 528
 529         return 0;
 530  out_unlock:
 531         rtnl_unlock();
 532         return err;
 533 }
 534
 535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 536 {
 537         rtnl_unlock();
 538 }
 539
 540 /* IE validation */
 541 static bool is_valid_ie_attr(const struct nlattr *attr)
 542 {
 543         const u8 *pos;
 544         int len;
 545
 546         if (!attr)
 547                 return true;
 548
 549         pos = nla_data(attr);
 550         len = nla_len(attr);
 551
 552         while (len) {
 553                 u8 elemlen;
 554
 555                 if (len < 2)
 556                         return false;
 557                 len -= 2;
 558
 559                 elemlen = pos[1];
 560                 if (elemlen > len)
 561                         return false;
 562
 563                 len -= elemlen;
 564                 pos += 2 + elemlen;
 565         }
 566
 567         return true;
 568 }
 569
 570 /* message building helper */
 571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 572                                    int flags, u8 cmd)
 573 {
 574         /* since there is no private header just add the generic one */
 575         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 576 }
 577
 578 static int nl80211_msg_put_channel(struct sk_buff *msg,
 579                                    struct ieee80211_channel *chan,
 580                                    bool large)
 581 {
 582         /* Some channels must be completely excluded from the
 583          * list to protect old user-space tools from breaking
 584          */
 585         if (!large && chan->flags &
 586             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 587                 return 0;
 588
 589         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 590                         chan->center_freq))
 591                 goto nla_put_failure;
 592
 593         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 594             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 595                 goto nla_put_failure;
 596         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 597                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 598                         goto nla_put_failure;
 599                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 600                         goto nla_put_failure;
 601         }
 602         if (chan->flags & IEEE80211_CHAN_RADAR) {
 603                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 604                         goto nla_put_failure;
 605                 if (large) {
 606                         u32 time;
 607
 608                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 609
 610                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 611                                         chan->dfs_state))
 612                                 goto nla_put_failure;
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 614                                         time))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg,
 617                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 618                                         chan->dfs_cac_ms))
 619                                 goto nla_put_failure;
 620                 }
 621         }
 622
 623         if (large) {
 624                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 625                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 626                         goto nla_put_failure;
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 647                         goto nla_put_failure;
 648         }
 649
 650         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 651                         DBM_TO_MBM(chan->max_power)))
 652                 goto nla_put_failure;
 653
 654         return 0;
 655
 656  nla_put_failure:
 657         return -ENOBUFS;
 658 }
 659
 660 /* netlink command implementations */
 661
 662 struct key_parse {
 663         struct key_params p;
 664         int idx;
 665         int type;
 666         bool def, defmgmt;
 667         bool def_uni, def_multi;
 668 };
 669
 670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 671 {
 672         struct nlattr *tb[NL80211_KEY_MAX + 1];
 673         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 674                                    nl80211_key_policy);
 675         if (err)
 676                 return err;
 677
 678         k->def = !!tb[NL80211_KEY_DEFAULT];
 679         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 680
 681         if (k->def) {
 682                 k->def_uni = true;
 683                 k->def_multi = true;
 684         }
 685         if (k->defmgmt)
 686                 k->def_multi = true;
 687
 688         if (tb[NL80211_KEY_IDX])
 689                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 690
 691         if (tb[NL80211_KEY_DATA]) {
 692                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 693                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 694         }
 695
 696         if (tb[NL80211_KEY_SEQ]) {
 697                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 698                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 699         }
 700
 701         if (tb[NL80211_KEY_CIPHER])
 702                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 703
 704         if (tb[NL80211_KEY_TYPE]) {
 705                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 706                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 707                         return -EINVAL;
 708         }
 709
 710         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 711                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 712                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 713                                        tb[NL80211_KEY_DEFAULT_TYPES],
 714                                        nl80211_key_default_policy);
 715                 if (err)
 716                         return err;
 717
 718                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 719                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 720         }
 721
 722         return 0;
 723 }
 724
 725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 726 {
 727         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 728                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 729                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 730         }
 731
 732         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 733                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 734                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 735         }
 736
 737         if (info->attrs[NL80211_ATTR_KEY_IDX])
 738                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 739
 740         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 741                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 742
 743         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 744         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 745
 746         if (k->def) {
 747                 k->def_uni = true;
 748                 k->def_multi = true;
 749         }
 750         if (k->defmgmt)
 751                 k->def_multi = true;
 752
 753         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 754                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 755                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 756                         return -EINVAL;
 757         }
 758
 759         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 760                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 761                 int err = nla_parse_nested(
 762                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 763                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 764                                 nl80211_key_default_policy);
 765                 if (err)
 766                         return err;
 767
 768                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 769                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 776 {
 777         int err;
 778
 779         memset(k, 0, sizeof(*k));
 780         k->idx = -1;
 781         k->type = -1;
 782
 783         if (info->attrs[NL80211_ATTR_KEY])
 784                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 785         else
 786                 err = nl80211_parse_key_old(info, k);
 787
 788         if (err)
 789                 return err;
 790
 791         if (k->def && k->defmgmt)
 792                 return -EINVAL;
 793
 794         if (k->defmgmt) {
 795                 if (k->def_uni || !k->def_multi)
 796                         return -EINVAL;
 797         }
 798
 799         if (k->idx != -1) {
 800                 if (k->defmgmt) {
 801                         if (k->idx < 4 || k->idx > 5)
 802                                 return -EINVAL;
 803                 } else if (k->def) {
 804                         if (k->idx < 0 || k->idx > 3)
 805                                 return -EINVAL;
 806                 } else {
 807                         if (k->idx < 0 || k->idx > 5)
 808                                 return -EINVAL;
 809                 }
 810         }
 811
 812         return 0;
 813 }
 814
 815 static struct cfg80211_cached_keys *
 816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 817                        struct nlattr *keys, bool *no_ht)
 818 {
 819         struct key_parse parse;
 820         struct nlattr *key;
 821         struct cfg80211_cached_keys *result;
 822         int rem, err, def = 0;
 823
 824         result = kzalloc(sizeof(*result), GFP_KERNEL);
 825         if (!result)
 826                 return ERR_PTR(-ENOMEM);
 827
 828         result->def = -1;
 829         result->defmgmt = -1;
 830
 831         nla_for_each_nested(key, keys, rem) {
 832                 memset(&parse, 0, sizeof(parse));
 833                 parse.idx = -1;
 834
 835                 err = nl80211_parse_key_new(key, &parse);
 836                 if (err)
 837                         goto error;
 838                 err = -EINVAL;
 839                 if (!parse.p.key)
 840                         goto error;
 841                 if (parse.idx < 0 || parse.idx > 4)
 842                         goto error;
 843                 if (parse.def) {
 844                         if (def)
 845                                 goto error;
 846                         def = 1;
 847                         result->def = parse.idx;
 848                         if (!parse.def_uni || !parse.def_multi)
 849                                 goto error;
 850                 } else if (parse.defmgmt)
 851                         goto error;
 852                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 853                                                      parse.idx, false, NULL);
 854                 if (err)
 855                         goto error;
 856                 result->params[parse.idx].cipher = parse.p.cipher;
 857                 result->params[parse.idx].key_len = parse.p.key_len;
 858                 result->params[parse.idx].key = result->data[parse.idx];
 859                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 860
 861                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 862                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 863                         if (no_ht)
 864                                 *no_ht = true;
 865                 }
 866         }
 867
 868         return result;
 869  error:
 870         kfree(result);
 871         return ERR_PTR(err);
 872 }
 873
 874 static int nl80211_key_allowed(struct wireless_dev *wdev)
 875 {
 876         ASSERT_WDEV_LOCK(wdev);
 877
 878         switch (wdev->iftype) {
 879         case NL80211_IFTYPE_AP:
 880         case NL80211_IFTYPE_AP_VLAN:
 881         case NL80211_IFTYPE_P2P_GO:
 882         case NL80211_IFTYPE_MESH_POINT:
 883                 break;
 884         case NL80211_IFTYPE_ADHOC:
 885         case NL80211_IFTYPE_STATION:
 886         case NL80211_IFTYPE_P2P_CLIENT:
 887                 if (!wdev->current_bss)
 888                         return -ENOLINK;
 889                 break;
 890         case NL80211_IFTYPE_UNSPECIFIED:
 891         case NL80211_IFTYPE_OCB:
 892         case NL80211_IFTYPE_MONITOR:
 893         case NL80211_IFTYPE_P2P_DEVICE:
 894         case NL80211_IFTYPE_WDS:
 895         case NUM_NL80211_IFTYPES:
 896                 return -EINVAL;
 897         }
 898
 899         return 0;
 900 }
 901
 902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 903                                                         struct nlattr *tb)
 904 {
 905         struct ieee80211_channel *chan;
 906
 907         if (tb == NULL)
 908                 return NULL;
 909         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 910         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 911                 return NULL;
 912         return chan;
 913 }
 914
 915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 916 {
 917         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 918         int i;
 919
 920         if (!nl_modes)
 921                 goto nla_put_failure;
 922
 923         i = 0;
 924         while (ifmodes) {
 925                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 926                         goto nla_put_failure;
 927                 ifmodes >>= 1;
 928                 i++;
 929         }
 930
 931         nla_nest_end(msg, nl_modes);
 932         return 0;
 933
 934 nla_put_failure:
 935         return -ENOBUFS;
 936 }
 937
 938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 939                                           struct sk_buff *msg,
 940                                           bool large)
 941 {
 942         struct nlattr *nl_combis;
 943         int i, j;
 944
 945         nl_combis = nla_nest_start(msg,
 946                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 947         if (!nl_combis)
 948                 goto nla_put_failure;
 949
 950         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 951                 const struct ieee80211_iface_combination *c;
 952                 struct nlattr *nl_combi, *nl_limits;
 953
 954                 c = &wiphy->iface_combinations[i];
 955
 956                 nl_combi = nla_nest_start(msg, i + 1);
 957                 if (!nl_combi)
 958                         goto nla_put_failure;
 959
 960                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 961                 if (!nl_limits)
 962                         goto nla_put_failure;
 963
 964                 for (j = 0; j < c->n_limits; j++) {
 965                         struct nlattr *nl_limit;
 966
 967                         nl_limit = nla_nest_start(msg, j + 1);
 968                         if (!nl_limit)
 969                                 goto nla_put_failure;
 970                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 971                                         c->limits[j].max))
 972                                 goto nla_put_failure;
 973                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 974                                                 c->limits[j].types))
 975                                 goto nla_put_failure;
 976                         nla_nest_end(msg, nl_limit);
 977                 }
 978
 979                 nla_nest_end(msg, nl_limits);
 980
 981                 if (c->beacon_int_infra_match &&
 982                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 983                         goto nla_put_failure;
 984                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 985                                 c->num_different_channels) ||
 986                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 987                                 c->max_interfaces))
 988                         goto nla_put_failure;
 989                 if (large &&
 990                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 991                                 c->radar_detect_widths) ||
 992                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 993                                 c->radar_detect_regions)))
 994                         goto nla_put_failure;
 995
 996                 nla_nest_end(msg, nl_combi);
 997         }
 998
 999         nla_nest_end(msg, nl_combis);
1000
1001         return 0;
1002 nla_put_failure:
1003         return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008                                         struct sk_buff *msg)
1009 {
1010         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011         struct nlattr *nl_tcp;
1012
1013         if (!tcp)
1014                 return 0;
1015
1016         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017         if (!nl_tcp)
1018                 return -ENOBUFS;
1019
1020         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021                         tcp->data_payload_max))
1022                 return -ENOBUFS;
1023
1024         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025                         tcp->data_payload_max))
1026                 return -ENOBUFS;
1027
1028         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029                 return -ENOBUFS;
1030
1031         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032                                 sizeof(*tcp->tok), tcp->tok))
1033                 return -ENOBUFS;
1034
1035         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036                         tcp->data_interval_max))
1037                 return -ENOBUFS;
1038
1039         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040                         tcp->wake_payload_max))
1041                 return -ENOBUFS;
1042
1043         nla_nest_end(msg, nl_tcp);
1044         return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048                                struct cfg80211_registered_device *rdev,
1049                                bool large)
1050 {
1051         struct nlattr *nl_wowlan;
1052
1053         if (!rdev->wiphy.wowlan)
1054                 return 0;
1055
1056         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057         if (!nl_wowlan)
1058                 return -ENOBUFS;
1059
1060         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076                 return -ENOBUFS;
1077
1078         if (rdev->wiphy.wowlan->n_patterns) {
1079                 struct nl80211_pattern_support pat = {
1080                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084                 };
1085
1086                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087                             sizeof(pat), &pat))
1088                         return -ENOBUFS;
1089         }
1090
1091         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1092             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1093                         rdev->wiphy.wowlan->max_nd_match_sets))
1094                 return -ENOBUFS;
1095
1096         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1097                 return -ENOBUFS;
1098
1099         /* TODO: send wowlan net detect */
1100
1101         nla_nest_end(msg, nl_wowlan);
1102
1103         return 0;
1104 }
1105 #endif
1106
1107 static int nl80211_send_coalesce(struct sk_buff *msg,
1108                                  struct cfg80211_registered_device *rdev)
1109 {
1110         struct nl80211_coalesce_rule_support rule;
1111
1112         if (!rdev->wiphy.coalesce)
1113                 return 0;
1114
1115         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1116         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1117         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1118         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1119         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1120         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1121
1122         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1123                 return -ENOBUFS;
1124
1125         return 0;
1126 }
1127
1128 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1129                                       struct ieee80211_supported_band *sband)
1130 {
1131         struct nlattr *nl_rates, *nl_rate;
1132         struct ieee80211_rate *rate;
1133         int i;
1134
1135         /* add HT info */
1136         if (sband->ht_cap.ht_supported &&
1137             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1138                      sizeof(sband->ht_cap.mcs),
1139                      &sband->ht_cap.mcs) ||
1140              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1141                          sband->ht_cap.cap) ||
1142              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1143                         sband->ht_cap.ampdu_factor) ||
1144              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1145                         sband->ht_cap.ampdu_density)))
1146                 return -ENOBUFS;
1147
1148         /* add VHT info */
1149         if (sband->vht_cap.vht_supported &&
1150             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1151                      sizeof(sband->vht_cap.vht_mcs),
1152                      &sband->vht_cap.vht_mcs) ||
1153              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1154                          sband->vht_cap.cap)))
1155                 return -ENOBUFS;
1156
1157         /* add bitrates */
1158         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1159         if (!nl_rates)
1160                 return -ENOBUFS;
1161
1162         for (i = 0; i < sband->n_bitrates; i++) {
1163                 nl_rate = nla_nest_start(msg, i);
1164                 if (!nl_rate)
1165                         return -ENOBUFS;
1166
1167                 rate = &sband->bitrates[i];
1168                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1169                                 rate->bitrate))
1170                         return -ENOBUFS;
1171                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1172                     nla_put_flag(msg,
1173                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1174                         return -ENOBUFS;
1175
1176                 nla_nest_end(msg, nl_rate);
1177         }
1178
1179         nla_nest_end(msg, nl_rates);
1180
1181         return 0;
1182 }
1183
1184 static int
1185 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1186                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1187 {
1188         u16 stypes;
1189         struct nlattr *nl_ftypes, *nl_ifs;
1190         enum nl80211_iftype ift;
1191         int i;
1192
1193         if (!mgmt_stypes)
1194                 return 0;
1195
1196         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1197         if (!nl_ifs)
1198                 return -ENOBUFS;
1199
1200         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1201                 nl_ftypes = nla_nest_start(msg, ift);
1202                 if (!nl_ftypes)
1203                         return -ENOBUFS;
1204                 i = 0;
1205                 stypes = mgmt_stypes[ift].tx;
1206                 while (stypes) {
1207                         if ((stypes & 1) &&
1208                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1209                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1210                                 return -ENOBUFS;
1211                         stypes >>= 1;
1212                         i++;
1213                 }
1214                 nla_nest_end(msg, nl_ftypes);
1215         }
1216
1217         nla_nest_end(msg, nl_ifs);
1218
1219         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1220         if (!nl_ifs)
1221                 return -ENOBUFS;
1222
1223         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1224                 nl_ftypes = nla_nest_start(msg, ift);
1225                 if (!nl_ftypes)
1226                         return -ENOBUFS;
1227                 i = 0;
1228                 stypes = mgmt_stypes[ift].rx;
1229                 while (stypes) {
1230                         if ((stypes & 1) &&
1231                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1232                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1233                                 return -ENOBUFS;
1234                         stypes >>= 1;
1235                         i++;
1236                 }
1237                 nla_nest_end(msg, nl_ftypes);
1238         }
1239         nla_nest_end(msg, nl_ifs);
1240
1241         return 0;
1242 }
1243
1244 struct nl80211_dump_wiphy_state {
1245         s64 filter_wiphy;
1246         long start;
1247         long split_start, band_start, chan_start;
1248         bool split;
1249 };
1250
1251 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1252                               enum nl80211_commands cmd,
1253                               struct sk_buff *msg, u32 portid, u32 seq,
1254                               int flags, struct nl80211_dump_wiphy_state *state)
1255 {
1256         void *hdr;
1257         struct nlattr *nl_bands, *nl_band;
1258         struct nlattr *nl_freqs, *nl_freq;
1259         struct nlattr *nl_cmds;
1260         enum ieee80211_band band;
1261         struct ieee80211_channel *chan;
1262         int i;
1263         const struct ieee80211_txrx_stypes *mgmt_stypes =
1264                                 rdev->wiphy.mgmt_stypes;
1265         u32 features;
1266
1267         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1268         if (!hdr)
1269                 return -ENOBUFS;
1270
1271         if (WARN_ON(!state))
1272                 return -EINVAL;
1273
1274         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1275             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1276                            wiphy_name(&rdev->wiphy)) ||
1277             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1278                         cfg80211_rdev_list_generation))
1279                 goto nla_put_failure;
1280
1281         if (cmd != NL80211_CMD_NEW_WIPHY)
1282                 goto finish;
1283
1284         switch (state->split_start) {
1285         case 0:
1286                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1287                                rdev->wiphy.retry_short) ||
1288                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1289                                rdev->wiphy.retry_long) ||
1290                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1291                                 rdev->wiphy.frag_threshold) ||
1292                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1293                                 rdev->wiphy.rts_threshold) ||
1294                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1295                                rdev->wiphy.coverage_class) ||
1296                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1297                                rdev->wiphy.max_scan_ssids) ||
1298                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1299                                rdev->wiphy.max_sched_scan_ssids) ||
1300                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1301                                 rdev->wiphy.max_scan_ie_len) ||
1302                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1303                                 rdev->wiphy.max_sched_scan_ie_len) ||
1304                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1305                                rdev->wiphy.max_match_sets))
1306                         goto nla_put_failure;
1307
1308                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1309                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1310                         goto nla_put_failure;
1311                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1312                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1313                         goto nla_put_failure;
1314                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1315                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1316                         goto nla_put_failure;
1317                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1318                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1319                         goto nla_put_failure;
1320                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1321                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1322                         goto nla_put_failure;
1323                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1324                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1325                         goto nla_put_failure;
1326                 state->split_start++;
1327                 if (state->split)
1328                         break;
1329         case 1:
1330                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1331                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1332                             rdev->wiphy.cipher_suites))
1333                         goto nla_put_failure;
1334
1335                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1336                                rdev->wiphy.max_num_pmkids))
1337                         goto nla_put_failure;
1338
1339                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1340                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1341                         goto nla_put_failure;
1342
1343                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1344                                 rdev->wiphy.available_antennas_tx) ||
1345                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1346                                 rdev->wiphy.available_antennas_rx))
1347                         goto nla_put_failure;
1348
1349                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1350                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1351                                 rdev->wiphy.probe_resp_offload))
1352                         goto nla_put_failure;
1353
1354                 if ((rdev->wiphy.available_antennas_tx ||
1355                      rdev->wiphy.available_antennas_rx) &&
1356                     rdev->ops->get_antenna) {
1357                         u32 tx_ant = 0, rx_ant = 0;
1358                         int res;
1359                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1360                         if (!res) {
1361                                 if (nla_put_u32(msg,
1362                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1363                                                 tx_ant) ||
1364                                     nla_put_u32(msg,
1365                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1366                                                 rx_ant))
1367                                         goto nla_put_failure;
1368                         }
1369                 }
1370
1371                 state->split_start++;
1372                 if (state->split)
1373                         break;
1374         case 2:
1375                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1376                                         rdev->wiphy.interface_modes))
1377                                 goto nla_put_failure;
1378                 state->split_start++;
1379                 if (state->split)
1380                         break;
1381         case 3:
1382                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1383                 if (!nl_bands)
1384                         goto nla_put_failure;
1385
1386                 for (band = state->band_start;
1387                      band < IEEE80211_NUM_BANDS; band++) {
1388                         struct ieee80211_supported_band *sband;
1389
1390                         sband = rdev->wiphy.bands[band];
1391
1392                         if (!sband)
1393                                 continue;
1394
1395                         nl_band = nla_nest_start(msg, band);
1396                         if (!nl_band)
1397                                 goto nla_put_failure;
1398
1399                         switch (state->chan_start) {
1400                         case 0:
1401                                 if (nl80211_send_band_rateinfo(msg, sband))
1402                                         goto nla_put_failure;
1403                                 state->chan_start++;
1404                                 if (state->split)
1405                                         break;
1406                         default:
1407                                 /* add frequencies */
1408                                 nl_freqs = nla_nest_start(
1409                                         msg, NL80211_BAND_ATTR_FREQS);
1410                                 if (!nl_freqs)
1411                                         goto nla_put_failure;
1412
1413                                 for (i = state->chan_start - 1;
1414                                      i < sband->n_channels;
1415                                      i++) {
1416                                         nl_freq = nla_nest_start(msg, i);
1417                                         if (!nl_freq)
1418                                                 goto nla_put_failure;
1419
1420                                         chan = &sband->channels[i];
1421
1422                                         if (nl80211_msg_put_channel(
1423                                                         msg, chan,
1424                                                         state->split))
1425                                                 goto nla_put_failure;
1426
1427                                         nla_nest_end(msg, nl_freq);
1428                                         if (state->split)
1429                                                 break;
1430                                 }
1431                                 if (i < sband->n_channels)
1432                                         state->chan_start = i + 2;
1433                                 else
1434                                         state->chan_start = 0;
1435                                 nla_nest_end(msg, nl_freqs);
1436                         }
1437
1438                         nla_nest_end(msg, nl_band);
1439
1440                         if (state->split) {
1441                                 /* start again here */
1442                                 if (state->chan_start)
1443                                         band--;
1444                                 break;
1445                         }
1446                 }
1447                 nla_nest_end(msg, nl_bands);
1448
1449                 if (band < IEEE80211_NUM_BANDS)
1450                         state->band_start = band + 1;
1451                 else
1452                         state->band_start = 0;
1453
1454                 /* if bands & channels are done, continue outside */
1455                 if (state->band_start == 0 && state->chan_start == 0)
1456                         state->split_start++;
1457                 if (state->split)
1458                         break;
1459         case 4:
1460                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1461                 if (!nl_cmds)
1462                         goto nla_put_failure;
1463
1464                 i = 0;
1465 #define CMD(op, n)                                                      \
1466                  do {                                                   \
1467                         if (rdev->ops->op) {                            \
1468                                 i++;                                    \
1469                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1470                                         goto nla_put_failure;           \
1471                         }                                               \
1472                 } while (0)
1473
1474                 CMD(add_virtual_intf, NEW_INTERFACE);
1475                 CMD(change_virtual_intf, SET_INTERFACE);
1476                 CMD(add_key, NEW_KEY);
1477                 CMD(start_ap, START_AP);
1478                 CMD(add_station, NEW_STATION);
1479                 CMD(add_mpath, NEW_MPATH);
1480                 CMD(update_mesh_config, SET_MESH_CONFIG);
1481                 CMD(change_bss, SET_BSS);
1482                 CMD(auth, AUTHENTICATE);
1483                 CMD(assoc, ASSOCIATE);
1484                 CMD(deauth, DEAUTHENTICATE);
1485                 CMD(disassoc, DISASSOCIATE);
1486                 CMD(join_ibss, JOIN_IBSS);
1487                 CMD(join_mesh, JOIN_MESH);
1488                 CMD(set_pmksa, SET_PMKSA);
1489                 CMD(del_pmksa, DEL_PMKSA);
1490                 CMD(flush_pmksa, FLUSH_PMKSA);
1491                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1492                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1493                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1494                 CMD(mgmt_tx, FRAME);
1495                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1496                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1497                         i++;
1498                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1499                                 goto nla_put_failure;
1500                 }
1501                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1502                     rdev->ops->join_mesh) {
1503                         i++;
1504                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1505                                 goto nla_put_failure;
1506                 }
1507                 CMD(set_wds_peer, SET_WDS_PEER);
1508                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1509                         CMD(tdls_mgmt, TDLS_MGMT);
1510                         CMD(tdls_oper, TDLS_OPER);
1511                 }
1512                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1513                         CMD(sched_scan_start, START_SCHED_SCAN);
1514                 CMD(probe_client, PROBE_CLIENT);
1515                 CMD(set_noack_map, SET_NOACK_MAP);
1516                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1517                         i++;
1518                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1519                                 goto nla_put_failure;
1520                 }
1521                 CMD(start_p2p_device, START_P2P_DEVICE);
1522                 CMD(set_mcast_rate, SET_MCAST_RATE);
1523 #ifdef CONFIG_NL80211_TESTMODE
1524                 CMD(testmode_cmd, TESTMODE);
1525 #endif
1526                 if (state->split) {
1527                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1528                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1529                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1530                                 CMD(channel_switch, CHANNEL_SWITCH);
1531                         CMD(set_qos_map, SET_QOS_MAP);
1532                         if (rdev->wiphy.features &
1533                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1534                                 CMD(add_tx_ts, ADD_TX_TS);
1535                 }
1536                 /* add into the if now */
1537 #undef CMD
1538
1539                 if (rdev->ops->connect || rdev->ops->auth) {
1540                         i++;
1541                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1542                                 goto nla_put_failure;
1543                 }
1544
1545                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1546                         i++;
1547                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1548                                 goto nla_put_failure;
1549                 }
1550
1551                 nla_nest_end(msg, nl_cmds);
1552                 state->split_start++;
1553                 if (state->split)
1554                         break;
1555         case 5:
1556                 if (rdev->ops->remain_on_channel &&
1557                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1558                     nla_put_u32(msg,
1559                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1560                                 rdev->wiphy.max_remain_on_channel_duration))
1561                         goto nla_put_failure;
1562
1563                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1564                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1565                         goto nla_put_failure;
1566
1567                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1568                         goto nla_put_failure;
1569                 state->split_start++;
1570                 if (state->split)
1571                         break;
1572         case 6:
1573 #ifdef CONFIG_PM
1574                 if (nl80211_send_wowlan(msg, rdev, state->split))
1575                         goto nla_put_failure;
1576                 state->split_start++;
1577                 if (state->split)
1578                         break;
1579 #else
1580                 state->split_start++;
1581 #endif
1582         case 7:
1583                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1584                                         rdev->wiphy.software_iftypes))
1585                         goto nla_put_failure;
1586
1587                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1588                                                    state->split))
1589                         goto nla_put_failure;
1590
1591                 state->split_start++;
1592                 if (state->split)
1593                         break;
1594         case 8:
1595                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1596                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1597                                 rdev->wiphy.ap_sme_capa))
1598                         goto nla_put_failure;
1599
1600                 features = rdev->wiphy.features;
1601                 /*
1602                  * We can only add the per-channel limit information if the
1603                  * dump is split, otherwise it makes it too big. Therefore
1604                  * only advertise it in that case.
1605                  */
1606                 if (state->split)
1607                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1608                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1609                         goto nla_put_failure;
1610
1611                 if (rdev->wiphy.ht_capa_mod_mask &&
1612                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1613                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1614                             rdev->wiphy.ht_capa_mod_mask))
1615                         goto nla_put_failure;
1616
1617                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1618                     rdev->wiphy.max_acl_mac_addrs &&
1619                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1620                                 rdev->wiphy.max_acl_mac_addrs))
1621                         goto nla_put_failure;
1622
1623                 /*
1624                  * Any information below this point is only available to
1625                  * applications that can deal with it being split. This
1626                  * helps ensure that newly added capabilities don't break
1627                  * older tools by overrunning their buffers.
1628                  *
1629                  * We still increment split_start so that in the split
1630                  * case we'll continue with more data in the next round,
1631                  * but break unconditionally so unsplit data stops here.
1632                  */
1633                 state->split_start++;
1634                 break;
1635         case 9:
1636                 if (rdev->wiphy.extended_capabilities &&
1637                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1638                              rdev->wiphy.extended_capabilities_len,
1639                              rdev->wiphy.extended_capabilities) ||
1640                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1641                              rdev->wiphy.extended_capabilities_len,
1642                              rdev->wiphy.extended_capabilities_mask)))
1643                         goto nla_put_failure;
1644
1645                 if (rdev->wiphy.vht_capa_mod_mask &&
1646                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1647                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1648                             rdev->wiphy.vht_capa_mod_mask))
1649                         goto nla_put_failure;
1650
1651                 state->split_start++;
1652                 break;
1653         case 10:
1654                 if (nl80211_send_coalesce(msg, rdev))
1655                         goto nla_put_failure;
1656
1657                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1658                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1659                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1660                         goto nla_put_failure;
1661
1662                 if (rdev->wiphy.max_ap_assoc_sta &&
1663                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1664                                 rdev->wiphy.max_ap_assoc_sta))
1665                         goto nla_put_failure;
1666
1667                 state->split_start++;
1668                 break;
1669         case 11:
1670                 if (rdev->wiphy.n_vendor_commands) {
1671                         const struct nl80211_vendor_cmd_info *info;
1672                         struct nlattr *nested;
1673
1674                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1675                         if (!nested)
1676                                 goto nla_put_failure;
1677
1678                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1679                                 info = &rdev->wiphy.vendor_commands[i].info;
1680                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1681                                         goto nla_put_failure;
1682                         }
1683                         nla_nest_end(msg, nested);
1684                 }
1685
1686                 if (rdev->wiphy.n_vendor_events) {
1687                         const struct nl80211_vendor_cmd_info *info;
1688                         struct nlattr *nested;
1689
1690                         nested = nla_nest_start(msg,
1691                                                 NL80211_ATTR_VENDOR_EVENTS);
1692                         if (!nested)
1693                                 goto nla_put_failure;
1694
1695                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1696                                 info = &rdev->wiphy.vendor_events[i];
1697                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1698                                         goto nla_put_failure;
1699                         }
1700                         nla_nest_end(msg, nested);
1701                 }
1702                 state->split_start++;
1703                 break;
1704         case 12:
1705                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1706                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1707                                rdev->wiphy.max_num_csa_counters))
1708                         goto nla_put_failure;
1709
1710                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1711                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1712                         goto nla_put_failure;
1713
1714                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1715                             sizeof(rdev->wiphy.ext_features),
1716                             rdev->wiphy.ext_features))
1717                         goto nla_put_failure;
1718
1719                 /* done */
1720                 state->split_start = 0;
1721                 break;
1722         }
1723  finish:
1724         genlmsg_end(msg, hdr);
1725         return 0;
1726
1727  nla_put_failure:
1728         genlmsg_cancel(msg, hdr);
1729         return -EMSGSIZE;
1730 }
1731
1732 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1733                                     struct netlink_callback *cb,
1734                                     struct nl80211_dump_wiphy_state *state)
1735 {
1736         struct nlattr **tb = nl80211_fam.attrbuf;
1737         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1738                               tb, nl80211_fam.maxattr, nl80211_policy);
1739         /* ignore parse errors for backward compatibility */
1740         if (ret)
1741                 return 0;
1742
1743         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1744         if (tb[NL80211_ATTR_WIPHY])
1745                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1746         if (tb[NL80211_ATTR_WDEV])
1747                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1748         if (tb[NL80211_ATTR_IFINDEX]) {
1749                 struct net_device *netdev;
1750                 struct cfg80211_registered_device *rdev;
1751                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1752
1753                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1754                 if (!netdev)
1755                         return -ENODEV;
1756                 if (netdev->ieee80211_ptr) {
1757                         rdev = wiphy_to_rdev(
1758                                 netdev->ieee80211_ptr->wiphy);
1759                         state->filter_wiphy = rdev->wiphy_idx;
1760                 }
1761         }
1762
1763         return 0;
1764 }
1765
1766 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1767 {
1768         int idx = 0, ret;
1769         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1770         struct cfg80211_registered_device *rdev;
1771
1772         rtnl_lock();
1773         if (!state) {
1774                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1775                 if (!state) {
1776                         rtnl_unlock();
1777                         return -ENOMEM;
1778                 }
1779                 state->filter_wiphy = -1;
1780                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1781                 if (ret) {
1782                         kfree(state);
1783                         rtnl_unlock();
1784                         return ret;
1785                 }
1786                 cb->args[0] = (long)state;
1787         }
1788
1789         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1790                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1791                         continue;
1792                 if (++idx <= state->start)
1793                         continue;
1794                 if (state->filter_wiphy != -1 &&
1795                     state->filter_wiphy != rdev->wiphy_idx)
1796                         continue;
1797                 /* attempt to fit multiple wiphy data chunks into the skb */
1798                 do {
1799                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1800                                                  skb,
1801                                                  NETLINK_CB(cb->skb).portid,
1802                                                  cb->nlh->nlmsg_seq,
1803                                                  NLM_F_MULTI, state);
1804                         if (ret < 0) {
1805                                 /*
1806                                  * If sending the wiphy data didn't fit (ENOBUFS
1807                                  * or EMSGSIZE returned), this SKB is still
1808                                  * empty (so it's not too big because another
1809                                  * wiphy dataset is already in the skb) and
1810                                  * we've not tried to adjust the dump allocation
1811                                  * yet ... then adjust the alloc size to be
1812                                  * bigger, and return 1 but with the empty skb.
1813                                  * This results in an empty message being RX'ed
1814                                  * in userspace, but that is ignored.
1815                                  *
1816                                  * We can then retry with the larger buffer.
1817                                  */
1818                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1819                                     !skb->len && !state->split &&
1820                                     cb->min_dump_alloc < 4096) {
1821                                         cb->min_dump_alloc = 4096;
1822                                         state->split_start = 0;
1823                                         rtnl_unlock();
1824                                         return 1;
1825                                 }
1826                                 idx--;
1827                                 break;
1828                         }
1829                 } while (state->split_start > 0);
1830                 break;
1831         }
1832         rtnl_unlock();
1833
1834         state->start = idx;
1835
1836         return skb->len;
1837 }
1838
1839 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1840 {
1841         kfree((void *)cb->args[0]);
1842         return 0;
1843 }
1844
1845 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1846 {
1847         struct sk_buff *msg;
1848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1849         struct nl80211_dump_wiphy_state state = {};
1850
1851         msg = nlmsg_new(4096, GFP_KERNEL);
1852         if (!msg)
1853                 return -ENOMEM;
1854
1855         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1856                                info->snd_portid, info->snd_seq, 0,
1857                                &state) < 0) {
1858                 nlmsg_free(msg);
1859                 return -ENOBUFS;
1860         }
1861
1862         return genlmsg_reply(msg, info);
1863 }
1864
1865 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1866         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1867         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1868         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1869         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1870         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1871 };
1872
1873 static int parse_txq_params(struct nlattr *tb[],
1874                             struct ieee80211_txq_params *txq_params)
1875 {
1876         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1877             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1878             !tb[NL80211_TXQ_ATTR_AIFS])
1879                 return -EINVAL;
1880
1881         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1882         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1883         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1884         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1885         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1886
1887         if (txq_params->ac >= NL80211_NUM_ACS)
1888                 return -EINVAL;
1889
1890         return 0;
1891 }
1892
1893 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1894 {
1895         /*
1896          * You can only set the channel explicitly for WDS interfaces,
1897          * all others have their channel managed via their respective
1898          * "establish a connection" command (connect, join, ...)
1899          *
1900          * For AP/GO and mesh mode, the channel can be set with the
1901          * channel userspace API, but is only stored and passed to the
1902          * low-level driver when the AP starts or the mesh is joined.
1903          * This is for backward compatibility, userspace can also give
1904          * the channel in the start-ap or join-mesh commands instead.
1905          *
1906          * Monitors are special as they are normally slaved to
1907          * whatever else is going on, so they have their own special
1908          * operation to set the monitor channel if possible.
1909          */
1910         return !wdev ||
1911                 wdev->iftype == NL80211_IFTYPE_AP ||
1912                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1913                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1914                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1915 }
1916
1917 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1918                                  struct genl_info *info,
1919                                  struct cfg80211_chan_def *chandef)
1920 {
1921         u32 control_freq;
1922
1923         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1924                 return -EINVAL;
1925
1926         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1927
1928         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1929         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1930         chandef->center_freq1 = control_freq;
1931         chandef->center_freq2 = 0;
1932
1933         /* Primary channel not allowed */
1934         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1935                 return -EINVAL;
1936
1937         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1938                 enum nl80211_channel_type chantype;
1939
1940                 chantype = nla_get_u32(
1941                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1942
1943                 switch (chantype) {
1944                 case NL80211_CHAN_NO_HT:
1945                 case NL80211_CHAN_HT20:
1946                 case NL80211_CHAN_HT40PLUS:
1947                 case NL80211_CHAN_HT40MINUS:
1948                         cfg80211_chandef_create(chandef, chandef->chan,
1949                                                 chantype);
1950                         break;
1951                 default:
1952                         return -EINVAL;
1953                 }
1954         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1955                 chandef->width =
1956                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1957                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1958                         chandef->center_freq1 =
1959                                 nla_get_u32(
1960                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1961                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1962                         chandef->center_freq2 =
1963                                 nla_get_u32(
1964                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1965         }
1966
1967         if (!cfg80211_chandef_valid(chandef))
1968                 return -EINVAL;
1969
1970         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1971                                      IEEE80211_CHAN_DISABLED))
1972                 return -EINVAL;
1973
1974         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1975              chandef->width == NL80211_CHAN_WIDTH_10) &&
1976             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1977                 return -EINVAL;
1978
1979         return 0;
1980 }
1981
1982 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1983                                  struct net_device *dev,
1984                                  struct genl_info *info)
1985 {
1986         struct cfg80211_chan_def chandef;
1987         int result;
1988         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1989         struct wireless_dev *wdev = NULL;
1990
1991         if (dev)
1992                 wdev = dev->ieee80211_ptr;
1993         if (!nl80211_can_set_dev_channel(wdev))
1994                 return -EOPNOTSUPP;
1995         if (wdev)
1996                 iftype = wdev->iftype;
1997
1998         result = nl80211_parse_chandef(rdev, info, &chandef);
1999         if (result)
2000                 return result;
2001
2002         switch (iftype) {
2003         case NL80211_IFTYPE_AP:
2004         case NL80211_IFTYPE_P2P_GO:
2005                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2006                         result = -EINVAL;
2007                         break;
2008                 }
2009                 if (wdev->beacon_interval) {
2010                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2011                             !(rdev->wiphy.features &
2012                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2013                                 result = -EBUSY;
2014                                 break;
2015                         }
2016
2017                         /* Only allow dynamic channel width changes */
2018                         if (chandef.chan != wdev->preset_chandef.chan) {
2019                                 result = -EBUSY;
2020                                 break;
2021                         }
2022                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2023                         if (result)
2024                                 break;
2025                 }
2026                 wdev->preset_chandef = chandef;
2027                 result = 0;
2028                 break;
2029         case NL80211_IFTYPE_MESH_POINT:
2030                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2031                 break;
2032         case NL80211_IFTYPE_MONITOR:
2033                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2034                 break;
2035         default:
2036                 result = -EINVAL;
2037         }
2038
2039         return result;
2040 }
2041
2042 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2043 {
2044         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2045         struct net_device *netdev = info->user_ptr[1];
2046
2047         return __nl80211_set_channel(rdev, netdev, info);
2048 }
2049
2050 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2051 {
2052         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2053         struct net_device *dev = info->user_ptr[1];
2054         struct wireless_dev *wdev = dev->ieee80211_ptr;
2055         const u8 *bssid;
2056
2057         if (!info->attrs[NL80211_ATTR_MAC])
2058                 return -EINVAL;
2059
2060         if (netif_running(dev))
2061                 return -EBUSY;
2062
2063         if (!rdev->ops->set_wds_peer)
2064                 return -EOPNOTSUPP;
2065
2066         if (wdev->iftype != NL80211_IFTYPE_WDS)
2067                 return -EOPNOTSUPP;
2068
2069         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2070         return rdev_set_wds_peer(rdev, dev, bssid);
2071 }
2072
2073
2074 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2075 {
2076         struct cfg80211_registered_device *rdev;
2077         struct net_device *netdev = NULL;
2078         struct wireless_dev *wdev;
2079         int result = 0, rem_txq_params = 0;
2080         struct nlattr *nl_txq_params;
2081         u32 changed;
2082         u8 retry_short = 0, retry_long = 0;
2083         u32 frag_threshold = 0, rts_threshold = 0;
2084         u8 coverage_class = 0;
2085
2086         ASSERT_RTNL();
2087
2088         /*
2089          * Try to find the wiphy and netdev. Normally this
2090          * function shouldn't need the netdev, but this is
2091          * done for backward compatibility -- previously
2092          * setting the channel was done per wiphy, but now
2093          * it is per netdev. Previous userland like hostapd
2094          * also passed a netdev to set_wiphy, so that it is
2095          * possible to let that go to the right netdev!
2096          */
2097
2098         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2099                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2100
2101                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2102                 if (netdev && netdev->ieee80211_ptr)
2103                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2104                 else
2105                         netdev = NULL;
2106         }
2107
2108         if (!netdev) {
2109                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2110                                                   info->attrs);
2111                 if (IS_ERR(rdev))
2112                         return PTR_ERR(rdev);
2113                 wdev = NULL;
2114                 netdev = NULL;
2115                 result = 0;
2116         } else
2117                 wdev = netdev->ieee80211_ptr;
2118
2119         /*
2120          * end workaround code, by now the rdev is available
2121          * and locked, and wdev may or may not be NULL.
2122          */
2123
2124         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2125                 result = cfg80211_dev_rename(
2126                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2127
2128         if (result)
2129                 return result;
2130
2131         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2132                 struct ieee80211_txq_params txq_params;
2133                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2134
2135                 if (!rdev->ops->set_txq_params)
2136                         return -EOPNOTSUPP;
2137
2138                 if (!netdev)
2139                         return -EINVAL;
2140
2141                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2142                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2143                         return -EINVAL;
2144
2145                 if (!netif_running(netdev))
2146                         return -ENETDOWN;
2147
2148                 nla_for_each_nested(nl_txq_params,
2149                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2150                                     rem_txq_params) {
2151                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2152                                            nla_data(nl_txq_params),
2153                                            nla_len(nl_txq_params),
2154                                            txq_params_policy);
2155                         if (result)
2156                                 return result;
2157                         result = parse_txq_params(tb, &txq_params);
2158                         if (result)
2159                                 return result;
2160
2161                         result = rdev_set_txq_params(rdev, netdev,
2162                                                      &txq_params);
2163                         if (result)
2164                                 return result;
2165                 }
2166         }
2167
2168         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2169                 result = __nl80211_set_channel(
2170                         rdev,
2171                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2172                         info);
2173                 if (result)
2174                         return result;
2175         }
2176
2177         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2178                 struct wireless_dev *txp_wdev = wdev;
2179                 enum nl80211_tx_power_setting type;
2180                 int idx, mbm = 0;
2181
2182                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2183                         txp_wdev = NULL;
2184
2185                 if (!rdev->ops->set_tx_power)
2186                         return -EOPNOTSUPP;
2187
2188                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2189                 type = nla_get_u32(info->attrs[idx]);
2190
2191                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2192                     (type != NL80211_TX_POWER_AUTOMATIC))
2193                         return -EINVAL;
2194
2195                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2196                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2197                         mbm = nla_get_u32(info->attrs[idx]);
2198                 }
2199
2200                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2201                 if (result)
2202                         return result;
2203         }
2204
2205         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2206             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2207                 u32 tx_ant, rx_ant;
2208                 if ((!rdev->wiphy.available_antennas_tx &&
2209                      !rdev->wiphy.available_antennas_rx) ||
2210                     !rdev->ops->set_antenna)
2211                         return -EOPNOTSUPP;
2212
2213                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2214                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2215
2216                 /* reject antenna configurations which don't match the
2217                  * available antenna masks, except for the "all" mask */
2218                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2219                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2220                         return -EINVAL;
2221
2222                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2223                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2224
2225                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2226                 if (result)
2227                         return result;
2228         }
2229
2230         changed = 0;
2231
2232         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2233                 retry_short = nla_get_u8(
2234                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2235                 if (retry_short == 0)
2236                         return -EINVAL;
2237
2238                 changed |= WIPHY_PARAM_RETRY_SHORT;
2239         }
2240
2241         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2242                 retry_long = nla_get_u8(
2243                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2244                 if (retry_long == 0)
2245                         return -EINVAL;
2246
2247                 changed |= WIPHY_PARAM_RETRY_LONG;
2248         }
2249
2250         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2251                 frag_threshold = nla_get_u32(
2252                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2253                 if (frag_threshold < 256)
2254                         return -EINVAL;
2255
2256                 if (frag_threshold != (u32) -1) {
2257                         /*
2258                          * Fragments (apart from the last one) are required to
2259                          * have even length. Make the fragmentation code
2260                          * simpler by stripping LSB should someone try to use
2261                          * odd threshold value.
2262                          */
2263                         frag_threshold &= ~0x1;
2264                 }
2265                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2266         }
2267
2268         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2269                 rts_threshold = nla_get_u32(
2270                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2271                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2272         }
2273
2274         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2275                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2276                         return -EINVAL;
2277
2278                 coverage_class = nla_get_u8(
2279                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2280                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2281         }
2282
2283         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2284                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2285                         return -EOPNOTSUPP;
2286
2287                 changed |= WIPHY_PARAM_DYN_ACK;
2288         }
2289
2290         if (changed) {
2291                 u8 old_retry_short, old_retry_long;
2292                 u32 old_frag_threshold, old_rts_threshold;
2293                 u8 old_coverage_class;
2294
2295                 if (!rdev->ops->set_wiphy_params)
2296                         return -EOPNOTSUPP;
2297
2298                 old_retry_short = rdev->wiphy.retry_short;
2299                 old_retry_long = rdev->wiphy.retry_long;
2300                 old_frag_threshold = rdev->wiphy.frag_threshold;
2301                 old_rts_threshold = rdev->wiphy.rts_threshold;
2302                 old_coverage_class = rdev->wiphy.coverage_class;
2303
2304                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2305                         rdev->wiphy.retry_short = retry_short;
2306                 if (changed & WIPHY_PARAM_RETRY_LONG)
2307                         rdev->wiphy.retry_long = retry_long;
2308                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2309                         rdev->wiphy.frag_threshold = frag_threshold;
2310                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2311                         rdev->wiphy.rts_threshold = rts_threshold;
2312                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2313                         rdev->wiphy.coverage_class = coverage_class;
2314
2315                 result = rdev_set_wiphy_params(rdev, changed);
2316                 if (result) {
2317                         rdev->wiphy.retry_short = old_retry_short;
2318                         rdev->wiphy.retry_long = old_retry_long;
2319                         rdev->wiphy.frag_threshold = old_frag_threshold;
2320                         rdev->wiphy.rts_threshold = old_rts_threshold;
2321                         rdev->wiphy.coverage_class = old_coverage_class;
2322                 }
2323         }
2324         return 0;
2325 }
2326
2327 static inline u64 wdev_id(struct wireless_dev *wdev)
2328 {
2329         return (u64)wdev->identifier |
2330                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2331 }
2332
2333 static int nl80211_send_chandef(struct sk_buff *msg,
2334                                 const struct cfg80211_chan_def *chandef)
2335 {
2336         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2337                 return -EINVAL;
2338
2339         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2340                         chandef->chan->center_freq))
2341                 return -ENOBUFS;
2342         switch (chandef->width) {
2343         case NL80211_CHAN_WIDTH_20_NOHT:
2344         case NL80211_CHAN_WIDTH_20:
2345         case NL80211_CHAN_WIDTH_40:
2346                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2347                                 cfg80211_get_chandef_type(chandef)))
2348                         return -ENOBUFS;
2349                 break;
2350         default:
2351                 break;
2352         }
2353         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2354                 return -ENOBUFS;
2355         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2356                 return -ENOBUFS;
2357         if (chandef->center_freq2 &&
2358             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2359                 return -ENOBUFS;
2360         return 0;
2361 }
2362
2363 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2364                               struct cfg80211_registered_device *rdev,
2365                               struct wireless_dev *wdev, bool removal)
2366 {
2367         struct net_device *dev = wdev->netdev;
2368         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2369         void *hdr;
2370
2371         if (removal)
2372                 cmd = NL80211_CMD_DEL_INTERFACE;
2373
2374         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2375         if (!hdr)
2376                 return -1;
2377
2378         if (dev &&
2379             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2380              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2381                 goto nla_put_failure;
2382
2383         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2384             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2385             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2386             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2387             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2388                         rdev->devlist_generation ^
2389                         (cfg80211_rdev_list_generation << 2)))
2390                 goto nla_put_failure;
2391
2392         if (rdev->ops->get_channel) {
2393                 int ret;
2394                 struct cfg80211_chan_def chandef;
2395
2396                 ret = rdev_get_channel(rdev, wdev, &chandef);
2397                 if (ret == 0) {
2398                         if (nl80211_send_chandef(msg, &chandef))
2399                                 goto nla_put_failure;
2400                 }
2401         }
2402
2403         if (wdev->ssid_len) {
2404                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2405                         goto nla_put_failure;
2406         }
2407
2408         genlmsg_end(msg, hdr);
2409         return 0;
2410
2411  nla_put_failure:
2412         genlmsg_cancel(msg, hdr);
2413         return -EMSGSIZE;
2414 }
2415
2416 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2417 {
2418         int wp_idx = 0;
2419         int if_idx = 0;
2420         int wp_start = cb->args[0];
2421         int if_start = cb->args[1];
2422         struct cfg80211_registered_device *rdev;
2423         struct wireless_dev *wdev;
2424
2425         rtnl_lock();
2426         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2427                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2428                         continue;
2429                 if (wp_idx < wp_start) {
2430                         wp_idx++;
2431                         continue;
2432                 }
2433                 if_idx = 0;
2434
2435                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2436                         if (if_idx < if_start) {
2437                                 if_idx++;
2438                                 continue;
2439                         }
2440                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2441                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2442                                                rdev, wdev, false) < 0) {
2443                                 goto out;
2444                         }
2445                         if_idx++;
2446                 }
2447
2448                 wp_idx++;
2449         }
2450  out:
2451         rtnl_unlock();
2452
2453         cb->args[0] = wp_idx;
2454         cb->args[1] = if_idx;
2455
2456         return skb->len;
2457 }
2458
2459 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2460 {
2461         struct sk_buff *msg;
2462         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2463         struct wireless_dev *wdev = info->user_ptr[1];
2464
2465         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2466         if (!msg)
2467                 return -ENOMEM;
2468
2469         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2470                                rdev, wdev, false) < 0) {
2471                 nlmsg_free(msg);
2472                 return -ENOBUFS;
2473         }
2474
2475         return genlmsg_reply(msg, info);
2476 }
2477
2478 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2479         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2480         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2481         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2482         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2483         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2484         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2485 };
2486
2487 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2488 {
2489         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2490         int flag;
2491
2492         *mntrflags = 0;
2493
2494         if (!nla)
2495                 return -EINVAL;
2496
2497         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2498                              nla, mntr_flags_policy))
2499                 return -EINVAL;
2500
2501         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2502                 if (flags[flag])
2503                         *mntrflags |= (1<<flag);
2504
2505         return 0;
2506 }
2507
2508 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2509                                struct net_device *netdev, u8 use_4addr,
2510                                enum nl80211_iftype iftype)
2511 {
2512         if (!use_4addr) {
2513                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2514                         return -EBUSY;
2515                 return 0;
2516         }
2517
2518         switch (iftype) {
2519         case NL80211_IFTYPE_AP_VLAN:
2520                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2521                         return 0;
2522                 break;
2523         case NL80211_IFTYPE_STATION:
2524                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2525                         return 0;
2526                 break;
2527         default:
2528                 break;
2529         }
2530
2531         return -EOPNOTSUPP;
2532 }
2533
2534 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2535 {
2536         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2537         struct vif_params params;
2538         int err;
2539         enum nl80211_iftype otype, ntype;
2540         struct net_device *dev = info->user_ptr[1];
2541         u32 _flags, *flags = NULL;
2542         bool change = false;
2543
2544         memset(&params, 0, sizeof(params));
2545
2546         otype = ntype = dev->ieee80211_ptr->iftype;
2547
2548         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2549                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2550                 if (otype != ntype)
2551                         change = true;
2552                 if (ntype > NL80211_IFTYPE_MAX)
2553                         return -EINVAL;
2554         }
2555
2556         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2557                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2558
2559                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2560                         return -EINVAL;
2561                 if (netif_running(dev))
2562                         return -EBUSY;
2563
2564                 wdev_lock(wdev);
2565                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2566                              IEEE80211_MAX_MESH_ID_LEN);
2567                 wdev->mesh_id_up_len =
2568                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2569                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2570                        wdev->mesh_id_up_len);
2571                 wdev_unlock(wdev);
2572         }
2573
2574         if (info->attrs[NL80211_ATTR_4ADDR]) {
2575                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2576                 change = true;
2577                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2578                 if (err)
2579                         return err;
2580         } else {
2581                 params.use_4addr = -1;
2582         }
2583
2584         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2585                 if (ntype != NL80211_IFTYPE_MONITOR)
2586                         return -EINVAL;
2587                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2588                                           &_flags);
2589                 if (err)
2590                         return err;
2591
2592                 flags = &_flags;
2593                 change = true;
2594         }
2595
2596         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2597             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2598                 return -EOPNOTSUPP;
2599
2600         if (change)
2601                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2602         else
2603                 err = 0;
2604
2605         if (!err && params.use_4addr != -1)
2606                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2607
2608         return err;
2609 }
2610
2611 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2612 {
2613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2614         struct vif_params params;
2615         struct wireless_dev *wdev;
2616         struct sk_buff *msg, *event;
2617         int err;
2618         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2619         u32 flags;
2620
2621         /* to avoid failing a new interface creation due to pending removal */
2622         cfg80211_destroy_ifaces(rdev);
2623
2624         memset(&params, 0, sizeof(params));
2625
2626         if (!info->attrs[NL80211_ATTR_IFNAME])
2627                 return -EINVAL;
2628
2629         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2630                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2631                 if (type > NL80211_IFTYPE_MAX)
2632                         return -EINVAL;
2633         }
2634
2635         if (!rdev->ops->add_virtual_intf ||
2636             !(rdev->wiphy.interface_modes & (1 << type)))
2637                 return -EOPNOTSUPP;
2638
2639         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2640              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2641             info->attrs[NL80211_ATTR_MAC]) {
2642                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2643                            ETH_ALEN);
2644                 if (!is_valid_ether_addr(params.macaddr))
2645                         return -EADDRNOTAVAIL;
2646         }
2647
2648         if (info->attrs[NL80211_ATTR_4ADDR]) {
2649                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2650                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2651                 if (err)
2652                         return err;
2653         }
2654
2655         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2656         if (!msg)
2657                 return -ENOMEM;
2658
2659         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2660                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2661                                   &flags);
2662
2663         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2664             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2665                 return -EOPNOTSUPP;
2666
2667         wdev = rdev_add_virtual_intf(rdev,
2668                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2669                                 type, err ? NULL : &flags, &params);
2670         if (WARN_ON(!wdev)) {
2671                 nlmsg_free(msg);
2672                 return -EPROTO;
2673         } else if (IS_ERR(wdev)) {
2674                 nlmsg_free(msg);
2675                 return PTR_ERR(wdev);
2676         }
2677
2678         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2679                 wdev->owner_nlportid = info->snd_portid;
2680
2681         switch (type) {
2682         case NL80211_IFTYPE_MESH_POINT:
2683                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2684                         break;
2685                 wdev_lock(wdev);
2686                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2687                              IEEE80211_MAX_MESH_ID_LEN);
2688                 wdev->mesh_id_up_len =
2689                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2690                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2691                        wdev->mesh_id_up_len);
2692                 wdev_unlock(wdev);
2693                 break;
2694         case NL80211_IFTYPE_P2P_DEVICE:
2695                 /*
2696                  * P2P Device doesn't have a netdev, so doesn't go
2697                  * through the netdev notifier and must be added here
2698                  */
2699                 mutex_init(&wdev->mtx);
2700                 INIT_LIST_HEAD(&wdev->event_list);
2701                 spin_lock_init(&wdev->event_lock);
2702                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2703                 spin_lock_init(&wdev->mgmt_registrations_lock);
2704
2705                 wdev->identifier = ++rdev->wdev_id;
2706                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2707                 rdev->devlist_generation++;
2708                 break;
2709         default:
2710                 break;
2711         }
2712
2713         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2714                                rdev, wdev, false) < 0) {
2715                 nlmsg_free(msg);
2716                 return -ENOBUFS;
2717         }
2718
2719         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2720         if (event) {
2721                 if (nl80211_send_iface(event, 0, 0, 0,
2722                                        rdev, wdev, false) < 0) {
2723                         nlmsg_free(event);
2724                         goto out;
2725                 }
2726
2727                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2728                                         event, 0, NL80211_MCGRP_CONFIG,
2729                                         GFP_KERNEL);
2730         }
2731
2732 out:
2733         return genlmsg_reply(msg, info);
2734 }
2735
2736 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2737 {
2738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2739         struct wireless_dev *wdev = info->user_ptr[1];
2740         struct sk_buff *msg;
2741         int status;
2742
2743         if (!rdev->ops->del_virtual_intf)
2744                 return -EOPNOTSUPP;
2745
2746         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2747         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2748                 nlmsg_free(msg);
2749                 msg = NULL;
2750         }
2751
2752         /*
2753          * If we remove a wireless device without a netdev then clear
2754          * user_ptr[1] so that nl80211_post_doit won't dereference it
2755          * to check if it needs to do dev_put(). Otherwise it crashes
2756          * since the wdev has been freed, unlike with a netdev where
2757          * we need the dev_put() for the netdev to really be freed.
2758          */
2759         if (!wdev->netdev)
2760                 info->user_ptr[1] = NULL;
2761
2762         status = rdev_del_virtual_intf(rdev, wdev);
2763         if (status >= 0 && msg)
2764                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2765                                         msg, 0, NL80211_MCGRP_CONFIG,
2766                                         GFP_KERNEL);
2767         else
2768                 nlmsg_free(msg);
2769
2770         return status;
2771 }
2772
2773 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2774 {
2775         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2776         struct net_device *dev = info->user_ptr[1];
2777         u16 noack_map;
2778
2779         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2780                 return -EINVAL;
2781
2782         if (!rdev->ops->set_noack_map)
2783                 return -EOPNOTSUPP;
2784
2785         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2786
2787         return rdev_set_noack_map(rdev, dev, noack_map);
2788 }
2789
2790 struct get_key_cookie {
2791         struct sk_buff *msg;
2792         int error;
2793         int idx;
2794 };
2795
2796 static void get_key_callback(void *c, struct key_params *params)
2797 {
2798         struct nlattr *key;
2799         struct get_key_cookie *cookie = c;
2800
2801         if ((params->key &&
2802              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2803                      params->key_len, params->key)) ||
2804             (params->seq &&
2805              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2806                      params->seq_len, params->seq)) ||
2807             (params->cipher &&
2808              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2809                          params->cipher)))
2810                 goto nla_put_failure;
2811
2812         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2813         if (!key)
2814                 goto nla_put_failure;
2815
2816         if ((params->key &&
2817              nla_put(cookie->msg, NL80211_KEY_DATA,
2818                      params->key_len, params->key)) ||
2819             (params->seq &&
2820              nla_put(cookie->msg, NL80211_KEY_SEQ,
2821                      params->seq_len, params->seq)) ||
2822             (params->cipher &&
2823              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2824                          params->cipher)))
2825                 goto nla_put_failure;
2826
2827         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2828                 goto nla_put_failure;
2829
2830         nla_nest_end(cookie->msg, key);
2831
2832         return;
2833  nla_put_failure:
2834         cookie->error = 1;
2835 }
2836
2837 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2838 {
2839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2840         int err;
2841         struct net_device *dev = info->user_ptr[1];
2842         u8 key_idx = 0;
2843         const u8 *mac_addr = NULL;
2844         bool pairwise;
2845         struct get_key_cookie cookie = {
2846                 .error = 0,
2847         };
2848         void *hdr;
2849         struct sk_buff *msg;
2850
2851         if (info->attrs[NL80211_ATTR_KEY_IDX])
2852                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2853
2854         if (key_idx > 5)
2855                 return -EINVAL;
2856
2857         if (info->attrs[NL80211_ATTR_MAC])
2858                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2859
2860         pairwise = !!mac_addr;
2861         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2862                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2863                 if (kt >= NUM_NL80211_KEYTYPES)
2864                         return -EINVAL;
2865                 if (kt != NL80211_KEYTYPE_GROUP &&
2866                     kt != NL80211_KEYTYPE_PAIRWISE)
2867                         return -EINVAL;
2868                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2869         }
2870
2871         if (!rdev->ops->get_key)
2872                 return -EOPNOTSUPP;
2873
2874         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2875         if (!msg)
2876                 return -ENOMEM;
2877
2878         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2879                              NL80211_CMD_NEW_KEY);
2880         if (!hdr)
2881                 goto nla_put_failure;
2882
2883         cookie.msg = msg;
2884         cookie.idx = key_idx;
2885
2886         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2887             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2888                 goto nla_put_failure;
2889         if (mac_addr &&
2890             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2891                 goto nla_put_failure;
2892
2893         if (pairwise && mac_addr &&
2894             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2895                 return -ENOENT;
2896
2897         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2898                            get_key_callback);
2899
2900         if (err)
2901                 goto free_msg;
2902
2903         if (cookie.error)
2904                 goto nla_put_failure;
2905
2906         genlmsg_end(msg, hdr);
2907         return genlmsg_reply(msg, info);
2908
2909  nla_put_failure:
2910         err = -ENOBUFS;
2911  free_msg:
2912         nlmsg_free(msg);
2913         return err;
2914 }
2915
2916 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2917 {
2918         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2919         struct key_parse key;
2920         int err;
2921         struct net_device *dev = info->user_ptr[1];
2922
2923         err = nl80211_parse_key(info, &key);
2924         if (err)
2925                 return err;
2926
2927         if (key.idx < 0)
2928                 return -EINVAL;
2929
2930         /* only support setting default key */
2931         if (!key.def && !key.defmgmt)
2932                 return -EINVAL;
2933
2934         wdev_lock(dev->ieee80211_ptr);
2935
2936         if (key.def) {
2937                 if (!rdev->ops->set_default_key) {
2938                         err = -EOPNOTSUPP;
2939                         goto out;
2940                 }
2941
2942                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2943                 if (err)
2944                         goto out;
2945
2946                 err = rdev_set_default_key(rdev, dev, key.idx,
2947                                                  key.def_uni, key.def_multi);
2948
2949                 if (err)
2950                         goto out;
2951
2952 #ifdef CONFIG_CFG80211_WEXT
2953                 dev->ieee80211_ptr->wext.default_key = key.idx;
2954 #endif
2955         } else {
2956                 if (key.def_uni || !key.def_multi) {
2957                         err = -EINVAL;
2958                         goto out;
2959                 }
2960
2961                 if (!rdev->ops->set_default_mgmt_key) {
2962                         err = -EOPNOTSUPP;
2963                         goto out;
2964                 }
2965
2966                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2967                 if (err)
2968                         goto out;
2969
2970                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2971                 if (err)
2972                         goto out;
2973
2974 #ifdef CONFIG_CFG80211_WEXT
2975                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2976 #endif
2977         }
2978
2979  out:
2980         wdev_unlock(dev->ieee80211_ptr);
2981
2982         return err;
2983 }
2984
2985 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2986 {
2987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2988         int err;
2989         struct net_device *dev = info->user_ptr[1];
2990         struct key_parse key;
2991         const u8 *mac_addr = NULL;
2992
2993         err = nl80211_parse_key(info, &key);
2994         if (err)
2995                 return err;
2996
2997         if (!key.p.key)
2998                 return -EINVAL;
2999
3000         if (info->attrs[NL80211_ATTR_MAC])
3001                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3002
3003         if (key.type == -1) {
3004                 if (mac_addr)
3005                         key.type = NL80211_KEYTYPE_PAIRWISE;
3006                 else
3007                         key.type = NL80211_KEYTYPE_GROUP;
3008         }
3009
3010         /* for now */
3011         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3012             key.type != NL80211_KEYTYPE_GROUP)
3013                 return -EINVAL;
3014
3015         if (!rdev->ops->add_key)
3016                 return -EOPNOTSUPP;
3017
3018         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3019                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3020                                            mac_addr))
3021                 return -EINVAL;
3022
3023         wdev_lock(dev->ieee80211_ptr);
3024         err = nl80211_key_allowed(dev->ieee80211_ptr);
3025         if (!err)
3026                 err = rdev_add_key(rdev, dev, key.idx,
3027                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3028                                     mac_addr, &key.p);
3029         wdev_unlock(dev->ieee80211_ptr);
3030
3031         return err;
3032 }
3033
3034 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3035 {
3036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3037         int err;
3038         struct net_device *dev = info->user_ptr[1];
3039         u8 *mac_addr = NULL;
3040         struct key_parse key;
3041
3042         err = nl80211_parse_key(info, &key);
3043         if (err)
3044                 return err;
3045
3046         if (info->attrs[NL80211_ATTR_MAC])
3047                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3048
3049         if (key.type == -1) {
3050                 if (mac_addr)
3051                         key.type = NL80211_KEYTYPE_PAIRWISE;
3052                 else
3053                         key.type = NL80211_KEYTYPE_GROUP;
3054         }
3055
3056         /* for now */
3057         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3058             key.type != NL80211_KEYTYPE_GROUP)
3059                 return -EINVAL;
3060
3061         if (!rdev->ops->del_key)
3062                 return -EOPNOTSUPP;
3063
3064         wdev_lock(dev->ieee80211_ptr);
3065         err = nl80211_key_allowed(dev->ieee80211_ptr);
3066
3067         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3068             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3069                 err = -ENOENT;
3070
3071         if (!err)
3072                 err = rdev_del_key(rdev, dev, key.idx,
3073                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3074                                    mac_addr);
3075
3076 #ifdef CONFIG_CFG80211_WEXT
3077         if (!err) {
3078                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3079                         dev->ieee80211_ptr->wext.default_key = -1;
3080                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3081                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3082         }
3083 #endif
3084         wdev_unlock(dev->ieee80211_ptr);
3085
3086         return err;
3087 }
3088
3089 /* This function returns an error or the number of nested attributes */
3090 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3091 {
3092         struct nlattr *attr;
3093         int n_entries = 0, tmp;
3094
3095         nla_for_each_nested(attr, nl_attr, tmp) {
3096                 if (nla_len(attr) != ETH_ALEN)
3097                         return -EINVAL;
3098
3099                 n_entries++;
3100         }
3101
3102         return n_entries;
3103 }
3104
3105 /*
3106  * This function parses ACL information and allocates memory for ACL data.
3107  * On successful return, the calling function is responsible to free the
3108  * ACL buffer returned by this function.
3109  */
3110 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3111                                                 struct genl_info *info)
3112 {
3113         enum nl80211_acl_policy acl_policy;
3114         struct nlattr *attr;
3115         struct cfg80211_acl_data *acl;
3116         int i = 0, n_entries, tmp;
3117
3118         if (!wiphy->max_acl_mac_addrs)
3119                 return ERR_PTR(-EOPNOTSUPP);
3120
3121         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3122                 return ERR_PTR(-EINVAL);
3123
3124         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3125         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3126             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3127                 return ERR_PTR(-EINVAL);
3128
3129         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3130                 return ERR_PTR(-EINVAL);
3131
3132         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3133         if (n_entries < 0)
3134                 return ERR_PTR(n_entries);
3135
3136         if (n_entries > wiphy->max_acl_mac_addrs)
3137                 return ERR_PTR(-ENOTSUPP);
3138
3139         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3140                       GFP_KERNEL);
3141         if (!acl)
3142                 return ERR_PTR(-ENOMEM);
3143
3144         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3145                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3146                 i++;
3147         }
3148
3149         acl->n_acl_entries = n_entries;
3150         acl->acl_policy = acl_policy;
3151
3152         return acl;
3153 }
3154
3155 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3156 {
3157         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3158         struct net_device *dev = info->user_ptr[1];
3159         struct cfg80211_acl_data *acl;
3160         int err;
3161
3162         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3163             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3164                 return -EOPNOTSUPP;
3165
3166         if (!dev->ieee80211_ptr->beacon_interval)
3167                 return -EINVAL;
3168
3169         acl = parse_acl_data(&rdev->wiphy, info);
3170         if (IS_ERR(acl))
3171                 return PTR_ERR(acl);
3172
3173         err = rdev_set_mac_acl(rdev, dev, acl);
3174
3175         kfree(acl);
3176
3177         return err;
3178 }
3179
3180 static int nl80211_parse_beacon(struct nlattr *attrs[],
3181                                 struct cfg80211_beacon_data *bcn)
3182 {
3183         bool haveinfo = false;
3184
3185         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3186             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3187             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3188             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3189                 return -EINVAL;
3190
3191         memset(bcn, 0, sizeof(*bcn));
3192
3193         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3194                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3195                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3196                 if (!bcn->head_len)
3197                         return -EINVAL;
3198                 haveinfo = true;
3199         }
3200
3201         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3202                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3203                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3204                 haveinfo = true;
3205         }
3206
3207         if (!haveinfo)
3208                 return -EINVAL;
3209
3210         if (attrs[NL80211_ATTR_IE]) {
3211                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3212                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3213         }
3214
3215         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3216                 bcn->proberesp_ies =
3217                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3218                 bcn->proberesp_ies_len =
3219                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3220         }
3221
3222         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3223                 bcn->assocresp_ies =
3224                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3225                 bcn->assocresp_ies_len =
3226                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3227         }
3228
3229         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3230                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3231                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3232         }
3233
3234         return 0;
3235 }
3236
3237 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3238                                    struct cfg80211_ap_settings *params)
3239 {
3240         struct wireless_dev *wdev;
3241         bool ret = false;
3242
3243         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3244                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3245                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3246                         continue;
3247
3248                 if (!wdev->preset_chandef.chan)
3249                         continue;
3250
3251                 params->chandef = wdev->preset_chandef;
3252                 ret = true;
3253                 break;
3254         }
3255
3256         return ret;
3257 }
3258
3259 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3260                                     enum nl80211_auth_type auth_type,
3261                                     enum nl80211_commands cmd)
3262 {
3263         if (auth_type > NL80211_AUTHTYPE_MAX)
3264                 return false;
3265
3266         switch (cmd) {
3267         case NL80211_CMD_AUTHENTICATE:
3268                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3269                     auth_type == NL80211_AUTHTYPE_SAE)
3270                         return false;
3271                 return true;
3272         case NL80211_CMD_CONNECT:
3273         case NL80211_CMD_START_AP:
3274                 /* SAE not supported yet */
3275                 if (auth_type == NL80211_AUTHTYPE_SAE)
3276                         return false;
3277                 return true;
3278         default:
3279                 return false;
3280         }
3281 }
3282
3283 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3284 {
3285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3286         struct net_device *dev = info->user_ptr[1];
3287         struct wireless_dev *wdev = dev->ieee80211_ptr;
3288         struct cfg80211_ap_settings params;
3289         int err;
3290
3291         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3292             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3293                 return -EOPNOTSUPP;
3294
3295         if (!rdev->ops->start_ap)
3296                 return -EOPNOTSUPP;
3297
3298         if (wdev->beacon_interval)
3299                 return -EALREADY;
3300
3301         memset(&params, 0, sizeof(params));
3302
3303         /* these are required for START_AP */
3304         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3305             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3306             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3307                 return -EINVAL;
3308
3309         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3310         if (err)
3311                 return err;
3312
3313         params.beacon_interval =
3314                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3315         params.dtim_period =
3316                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3317
3318         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3319         if (err)
3320                 return err;
3321
3322         /*
3323          * In theory, some of these attributes should be required here
3324          * but since they were not used when the command was originally
3325          * added, keep them optional for old user space programs to let
3326          * them continue to work with drivers that do not need the
3327          * additional information -- drivers must check!
3328          */
3329         if (info->attrs[NL80211_ATTR_SSID]) {
3330                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3331                 params.ssid_len =
3332                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3333                 if (params.ssid_len == 0 ||
3334                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3335                         return -EINVAL;
3336         }
3337
3338         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3339                 params.hidden_ssid = nla_get_u32(
3340                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3341                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3342                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3343                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3344                         return -EINVAL;
3345         }
3346
3347         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3348
3349         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3350                 params.auth_type = nla_get_u32(
3351                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3352                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3353                                              NL80211_CMD_START_AP))
3354                         return -EINVAL;
3355         } else
3356                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3357
3358         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3359                                       NL80211_MAX_NR_CIPHER_SUITES);
3360         if (err)
3361                 return err;
3362
3363         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3364                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3365                         return -EOPNOTSUPP;
3366                 params.inactivity_timeout = nla_get_u16(
3367                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3368         }
3369
3370         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3371                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3372                         return -EINVAL;
3373                 params.p2p_ctwindow =
3374                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3375                 if (params.p2p_ctwindow > 127)
3376                         return -EINVAL;
3377                 if (params.p2p_ctwindow != 0 &&
3378                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3379                         return -EINVAL;
3380         }
3381
3382         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3383                 u8 tmp;
3384
3385                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3386                         return -EINVAL;
3387                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3388                 if (tmp > 1)
3389                         return -EINVAL;
3390                 params.p2p_opp_ps = tmp;
3391                 if (params.p2p_opp_ps != 0 &&
3392                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3393                         return -EINVAL;
3394         }
3395
3396         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3397                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3398                 if (err)
3399                         return err;
3400         } else if (wdev->preset_chandef.chan) {
3401                 params.chandef = wdev->preset_chandef;
3402         } else if (!nl80211_get_ap_channel(rdev, &params))
3403                 return -EINVAL;
3404
3405         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3406                                      wdev->iftype))
3407                 return -EINVAL;
3408
3409         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3410                 params.acl = parse_acl_data(&rdev->wiphy, info);
3411                 if (IS_ERR(params.acl))
3412                         return PTR_ERR(params.acl);
3413         }
3414
3415         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3416                 params.smps_mode =
3417                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3418                 switch (params.smps_mode) {
3419                 case NL80211_SMPS_OFF:
3420                         break;
3421                 case NL80211_SMPS_STATIC:
3422                         if (!(rdev->wiphy.features &
3423                               NL80211_FEATURE_STATIC_SMPS))
3424                                 return -EINVAL;
3425                         break;
3426                 case NL80211_SMPS_DYNAMIC:
3427                         if (!(rdev->wiphy.features &
3428                               NL80211_FEATURE_DYNAMIC_SMPS))
3429                                 return -EINVAL;
3430                         break;
3431                 default:
3432                         return -EINVAL;
3433                 }
3434         } else {
3435                 params.smps_mode = NL80211_SMPS_OFF;
3436         }
3437
3438         wdev_lock(wdev);
3439         err = rdev_start_ap(rdev, dev, &params);
3440         if (!err) {
3441                 wdev->preset_chandef = params.chandef;
3442                 wdev->beacon_interval = params.beacon_interval;
3443                 wdev->chandef = params.chandef;
3444                 wdev->ssid_len = params.ssid_len;
3445                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3446         }
3447         wdev_unlock(wdev);
3448
3449         kfree(params.acl);
3450
3451         return err;
3452 }
3453
3454 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3455 {
3456         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3457         struct net_device *dev = info->user_ptr[1];
3458         struct wireless_dev *wdev = dev->ieee80211_ptr;
3459         struct cfg80211_beacon_data params;
3460         int err;
3461
3462         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3463             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3464                 return -EOPNOTSUPP;
3465
3466         if (!rdev->ops->change_beacon)
3467                 return -EOPNOTSUPP;
3468
3469         if (!wdev->beacon_interval)
3470                 return -EINVAL;
3471
3472         err = nl80211_parse_beacon(info->attrs, &params);
3473         if (err)
3474                 return err;
3475
3476         wdev_lock(wdev);
3477         err = rdev_change_beacon(rdev, dev, &params);
3478         wdev_unlock(wdev);
3479
3480         return err;
3481 }
3482
3483 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3484 {
3485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3486         struct net_device *dev = info->user_ptr[1];
3487
3488         return cfg80211_stop_ap(rdev, dev, false);
3489 }
3490
3491 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3492         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3493         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3494         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3495         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3496         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3497         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3498 };
3499
3500 static int parse_station_flags(struct genl_info *info,
3501                                enum nl80211_iftype iftype,
3502                                struct station_parameters *params)
3503 {
3504         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3505         struct nlattr *nla;
3506         int flag;
3507
3508         /*
3509          * Try parsing the new attribute first so userspace
3510          * can specify both for older kernels.
3511          */
3512         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3513         if (nla) {
3514                 struct nl80211_sta_flag_update *sta_flags;
3515
3516                 sta_flags = nla_data(nla);
3517                 params->sta_flags_mask = sta_flags->mask;
3518                 params->sta_flags_set = sta_flags->set;
3519                 params->sta_flags_set &= params->sta_flags_mask;
3520                 if ((params->sta_flags_mask |
3521                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3522                         return -EINVAL;
3523                 return 0;
3524         }
3525
3526         /* if present, parse the old attribute */
3527
3528         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3529         if (!nla)
3530                 return 0;
3531
3532         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3533                              nla, sta_flags_policy))
3534                 return -EINVAL;
3535
3536         /*
3537          * Only allow certain flags for interface types so that
3538          * other attributes are silently ignored. Remember that
3539          * this is backward compatibility code with old userspace
3540          * and shouldn't be hit in other cases anyway.
3541          */
3542         switch (iftype) {
3543         case NL80211_IFTYPE_AP:
3544         case NL80211_IFTYPE_AP_VLAN:
3545         case NL80211_IFTYPE_P2P_GO:
3546                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3547                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3548                                          BIT(NL80211_STA_FLAG_WME) |
3549                                          BIT(NL80211_STA_FLAG_MFP);
3550                 break;
3551         case NL80211_IFTYPE_P2P_CLIENT:
3552         case NL80211_IFTYPE_STATION:
3553                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3554                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3555                 break;
3556         case NL80211_IFTYPE_MESH_POINT:
3557                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3558                                          BIT(NL80211_STA_FLAG_MFP) |
3559                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3560         default:
3561                 return -EINVAL;
3562         }
3563
3564         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3565                 if (flags[flag]) {
3566                         params->sta_flags_set |= (1<<flag);
3567
3568                         /* no longer support new API additions in old API */
3569                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3570                                 return -EINVAL;
3571                 }
3572         }
3573
3574         return 0;
3575 }
3576
3577 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3578                                  int attr)
3579 {
3580         struct nlattr *rate;
3581         u32 bitrate;
3582         u16 bitrate_compat;
3583         enum nl80211_attrs rate_flg;
3584
3585         rate = nla_nest_start(msg, attr);
3586         if (!rate)
3587                 return false;
3588
3589         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3590         bitrate = cfg80211_calculate_bitrate(info);
3591         /* report 16-bit bitrate only if we can */
3592         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3593         if (bitrate > 0 &&
3594             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3595                 return false;
3596         if (bitrate_compat > 0 &&
3597             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3598                 return false;
3599
3600         switch (info->bw) {
3601         case RATE_INFO_BW_5:
3602                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3603                 break;
3604         case RATE_INFO_BW_10:
3605                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3606                 break;
3607         default:
3608                 WARN_ON(1);
3609                 /* fall through */
3610         case RATE_INFO_BW_20:
3611                 rate_flg = 0;
3612                 break;
3613         case RATE_INFO_BW_40:
3614                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3615                 break;
3616         case RATE_INFO_BW_80:
3617                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3618                 break;
3619         case RATE_INFO_BW_160:
3620                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3621                 break;
3622         }
3623
3624         if (rate_flg && nla_put_flag(msg, rate_flg))
3625                 return false;
3626
3627         if (info->flags & RATE_INFO_FLAGS_MCS) {
3628                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3629                         return false;
3630                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3631                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3632                         return false;
3633         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3634                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3635                         return false;
3636                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3637                         return false;
3638                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3639                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3640                         return false;
3641         }
3642
3643         nla_nest_end(msg, rate);
3644         return true;
3645 }
3646
3647 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3648                                int id)
3649 {
3650         void *attr;
3651         int i = 0;
3652
3653         if (!mask)
3654                 return true;
3655
3656         attr = nla_nest_start(msg, id);
3657         if (!attr)
3658                 return false;
3659
3660         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3661                 if (!(mask & BIT(i)))
3662                         continue;
3663
3664                 if (nla_put_u8(msg, i, signal[i]))
3665                         return false;
3666         }
3667
3668         nla_nest_end(msg, attr);
3669
3670         return true;
3671 }
3672
3673 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3674                                 u32 seq, int flags,
3675                                 struct cfg80211_registered_device *rdev,
3676                                 struct net_device *dev,
3677                                 const u8 *mac_addr, struct station_info *sinfo)
3678 {
3679         void *hdr;
3680         struct nlattr *sinfoattr, *bss_param;
3681
3682         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3683         if (!hdr)
3684                 return -1;
3685
3686         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3687             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3688             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3689                 goto nla_put_failure;
3690
3691         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3692         if (!sinfoattr)
3693                 goto nla_put_failure;
3694
3695 #define PUT_SINFO(attr, memb, type) do {                                \
3696         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3697             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3698                              sinfo->memb))                              \
3699                 goto nla_put_failure;                                   \
3700         } while (0)
3701
3702         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3703         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3704
3705         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3706                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3707             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3708                         (u32)sinfo->rx_bytes))
3709                 goto nla_put_failure;
3710
3711         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3712                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3713             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3714                         (u32)sinfo->tx_bytes))
3715                 goto nla_put_failure;
3716
3717         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3718         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3719         PUT_SINFO(LLID, llid, u16);
3720         PUT_SINFO(PLID, plid, u16);
3721         PUT_SINFO(PLINK_STATE, plink_state, u8);
3722
3723         switch (rdev->wiphy.signal_type) {
3724         case CFG80211_SIGNAL_TYPE_MBM:
3725                 PUT_SINFO(SIGNAL, signal, u8);
3726                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3727                 break;
3728         default:
3729                 break;
3730         }
3731         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3732                 if (!nl80211_put_signal(msg, sinfo->chains,
3733                                         sinfo->chain_signal,
3734                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3735                         goto nla_put_failure;
3736         }
3737         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3738                 if (!nl80211_put_signal(msg, sinfo->chains,
3739                                         sinfo->chain_signal_avg,
3740                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3741                         goto nla_put_failure;
3742         }
3743         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3744                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3745                                           NL80211_STA_INFO_TX_BITRATE))
3746                         goto nla_put_failure;
3747         }
3748         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3749                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3750                                           NL80211_STA_INFO_RX_BITRATE))
3751                         goto nla_put_failure;
3752         }
3753
3754         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3755         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3756         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3757         PUT_SINFO(TX_FAILED, tx_failed, u32);
3758         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3759         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3760         PUT_SINFO(LOCAL_PM, local_pm, u32);
3761         PUT_SINFO(PEER_PM, peer_pm, u32);
3762         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3763
3764         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3765                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3766                 if (!bss_param)
3767                         goto nla_put_failure;
3768
3769                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3770                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3771                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3772                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3773                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3774                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3775                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3776                                sinfo->bss_param.dtim_period) ||
3777                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3778                                 sinfo->bss_param.beacon_interval))
3779                         goto nla_put_failure;
3780
3781                 nla_nest_end(msg, bss_param);
3782         }
3783         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3784             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3785                     sizeof(struct nl80211_sta_flag_update),
3786                     &sinfo->sta_flags))
3787                 goto nla_put_failure;
3788
3789         PUT_SINFO(T_OFFSET, t_offset, u64);
3790         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3791         PUT_SINFO(BEACON_RX, rx_beacon, u64);
3792         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3793
3794 #undef PUT_SINFO
3795
3796         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3797                 struct nlattr *tidsattr;
3798                 int tid;
3799
3800                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3801                 if (!tidsattr)
3802                         goto nla_put_failure;
3803
3804                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3805                         struct cfg80211_tid_stats *tidstats;
3806                         struct nlattr *tidattr;
3807
3808                         tidstats = &sinfo->pertid[tid];
3809
3810                         if (!tidstats->filled)
3811                                 continue;
3812
3813                         tidattr = nla_nest_start(msg, tid + 1);
3814                         if (!tidattr)
3815                                 goto nla_put_failure;
3816
3817 #define PUT_TIDVAL(attr, memb, type) do {                               \
3818         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3819             nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr,           \
3820                              tidstats->memb))                           \
3821                 goto nla_put_failure;                                   \
3822         } while (0)
3823
3824                         PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3825                         PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3826                         PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3827                         PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3828
3829 #undef PUT_TIDVAL
3830                         nla_nest_end(msg, tidattr);
3831                 }
3832
3833                 nla_nest_end(msg, tidsattr);
3834         }
3835
3836         nla_nest_end(msg, sinfoattr);
3837
3838         if (sinfo->assoc_req_ies_len &&
3839             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3840                     sinfo->assoc_req_ies))
3841                 goto nla_put_failure;
3842
3843         genlmsg_end(msg, hdr);
3844         return 0;
3845
3846  nla_put_failure:
3847         genlmsg_cancel(msg, hdr);
3848         return -EMSGSIZE;
3849 }
3850
3851 static int nl80211_dump_station(struct sk_buff *skb,
3852                                 struct netlink_callback *cb)
3853 {
3854         struct station_info sinfo;
3855         struct cfg80211_registered_device *rdev;
3856         struct wireless_dev *wdev;
3857         u8 mac_addr[ETH_ALEN];
3858         int sta_idx = cb->args[2];
3859         int err;
3860
3861         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3862         if (err)
3863                 return err;
3864
3865         if (!wdev->netdev) {
3866                 err = -EINVAL;
3867                 goto out_err;
3868         }
3869
3870         if (!rdev->ops->dump_station) {
3871                 err = -EOPNOTSUPP;
3872                 goto out_err;
3873         }
3874
3875         while (1) {
3876                 memset(&sinfo, 0, sizeof(sinfo));
3877                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3878                                         mac_addr, &sinfo);
3879                 if (err == -ENOENT)
3880                         break;
3881                 if (err)
3882                         goto out_err;
3883
3884                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3885                                 NETLINK_CB(cb->skb).portid,
3886                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3887                                 rdev, wdev->netdev, mac_addr,
3888                                 &sinfo) < 0)
3889                         goto out;
3890
3891                 sta_idx++;
3892         }
3893
3894
3895  out:
3896         cb->args[2] = sta_idx;
3897         err = skb->len;
3898  out_err:
3899         nl80211_finish_wdev_dump(rdev);
3900
3901         return err;
3902 }
3903
3904 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3905 {
3906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3907         struct net_device *dev = info->user_ptr[1];
3908         struct station_info sinfo;
3909         struct sk_buff *msg;
3910         u8 *mac_addr = NULL;
3911         int err;
3912
3913         memset(&sinfo, 0, sizeof(sinfo));
3914
3915         if (!info->attrs[NL80211_ATTR_MAC])
3916                 return -EINVAL;
3917
3918         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3919
3920         if (!rdev->ops->get_station)
3921                 return -EOPNOTSUPP;
3922
3923         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3924         if (err)
3925                 return err;
3926
3927         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3928         if (!msg)
3929                 return -ENOMEM;
3930
3931         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3932                                  info->snd_portid, info->snd_seq, 0,
3933                                  rdev, dev, mac_addr, &sinfo) < 0) {
3934                 nlmsg_free(msg);
3935                 return -ENOBUFS;
3936         }
3937
3938         return genlmsg_reply(msg, info);
3939 }
3940
3941 int cfg80211_check_station_change(struct wiphy *wiphy,
3942                                   struct station_parameters *params,
3943                                   enum cfg80211_station_type statype)
3944 {
3945         if (params->listen_interval != -1)
3946                 return -EINVAL;
3947         if (params->aid &&
3948             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3949                 return -EINVAL;
3950
3951         /* When you run into this, adjust the code below for the new flag */
3952         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3953
3954         switch (statype) {
3955         case CFG80211_STA_MESH_PEER_KERNEL:
3956         case CFG80211_STA_MESH_PEER_USER:
3957                 /*
3958                  * No ignoring the TDLS flag here -- the userspace mesh
3959                  * code doesn't have the bug of including TDLS in the
3960                  * mask everywhere.
3961                  */
3962                 if (params->sta_flags_mask &
3963                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3964                                   BIT(NL80211_STA_FLAG_MFP) |
3965                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3966                         return -EINVAL;
3967                 break;
3968         case CFG80211_STA_TDLS_PEER_SETUP:
3969         case CFG80211_STA_TDLS_PEER_ACTIVE:
3970                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3971                         return -EINVAL;
3972                 /* ignore since it can't change */
3973                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3974                 break;
3975         default:
3976                 /* disallow mesh-specific things */
3977                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3978                         return -EINVAL;
3979                 if (params->local_pm)
3980                         return -EINVAL;
3981                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3982                         return -EINVAL;
3983         }
3984
3985         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3986             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3987                 /* TDLS can't be set, ... */
3988                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3989                         return -EINVAL;
3990                 /*
3991                  * ... but don't bother the driver with it. This works around
3992                  * a hostapd/wpa_supplicant issue -- it always includes the
3993                  * TLDS_PEER flag in the mask even for AP mode.
3994                  */
3995                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3996         }
3997
3998         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3999                 /* reject other things that can't change */
4000                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4001                         return -EINVAL;
4002                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4003                         return -EINVAL;
4004                 if (params->supported_rates)
4005                         return -EINVAL;
4006                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4007                         return -EINVAL;
4008         }
4009
4010         if (statype != CFG80211_STA_AP_CLIENT) {
4011                 if (params->vlan)
4012                         return -EINVAL;
4013         }
4014
4015         switch (statype) {
4016         case CFG80211_STA_AP_MLME_CLIENT:
4017                 /* Use this only for authorizing/unauthorizing a station */
4018                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4019                         return -EOPNOTSUPP;
4020                 break;
4021         case CFG80211_STA_AP_CLIENT:
4022                 /* accept only the listed bits */
4023                 if (params->sta_flags_mask &
4024                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4025                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4026                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4027                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4028                                   BIT(NL80211_STA_FLAG_WME) |
4029                                   BIT(NL80211_STA_FLAG_MFP)))
4030                         return -EINVAL;
4031
4032                 /* but authenticated/associated only if driver handles it */
4033                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4034                     params->sta_flags_mask &
4035                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4036                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4037                         return -EINVAL;
4038                 break;
4039         case CFG80211_STA_IBSS:
4040         case CFG80211_STA_AP_STA:
4041                 /* reject any changes other than AUTHORIZED */
4042                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4043                         return -EINVAL;
4044                 break;
4045         case CFG80211_STA_TDLS_PEER_SETUP:
4046                 /* reject any changes other than AUTHORIZED or WME */
4047                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4048                                                BIT(NL80211_STA_FLAG_WME)))
4049                         return -EINVAL;
4050                 /* force (at least) rates when authorizing */
4051                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4052                     !params->supported_rates)
4053                         return -EINVAL;
4054                 break;
4055         case CFG80211_STA_TDLS_PEER_ACTIVE:
4056                 /* reject any changes */
4057                 return -EINVAL;
4058         case CFG80211_STA_MESH_PEER_KERNEL:
4059                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4060                         return -EINVAL;
4061                 break;
4062         case CFG80211_STA_MESH_PEER_USER:
4063                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4064                         return -EINVAL;
4065                 break;
4066         }
4067
4068         return 0;
4069 }
4070 EXPORT_SYMBOL(cfg80211_check_station_change);
4071
4072 /*
4073  * Get vlan interface making sure it is running and on the right wiphy.
4074  */
4075 static struct net_device *get_vlan(struct genl_info *info,
4076                                    struct cfg80211_registered_device *rdev)
4077 {
4078         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4079         struct net_device *v;
4080         int ret;
4081
4082         if (!vlanattr)
4083                 return NULL;
4084
4085         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4086         if (!v)
4087                 return ERR_PTR(-ENODEV);
4088
4089         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4090                 ret = -EINVAL;
4091                 goto error;
4092         }
4093
4094         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4095             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4096             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4097                 ret = -EINVAL;
4098                 goto error;
4099         }
4100
4101         if (!netif_running(v)) {
4102                 ret = -ENETDOWN;
4103                 goto error;
4104         }
4105
4106         return v;
4107  error:
4108         dev_put(v);
4109         return ERR_PTR(ret);
4110 }
4111
4112 static const struct nla_policy
4113 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4114         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4115         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4116 };
4117
4118 static int nl80211_parse_sta_wme(struct genl_info *info,
4119                                  struct station_parameters *params)
4120 {
4121         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4122         struct nlattr *nla;
4123         int err;
4124
4125         /* parse WME attributes if present */
4126         if (!info->attrs[NL80211_ATTR_STA_WME])
4127                 return 0;
4128
4129         nla = info->attrs[NL80211_ATTR_STA_WME];
4130         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4131                                nl80211_sta_wme_policy);
4132         if (err)
4133                 return err;
4134
4135         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4136                 params->uapsd_queues = nla_get_u8(
4137                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4138         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4139                 return -EINVAL;
4140
4141         if (tb[NL80211_STA_WME_MAX_SP])
4142                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4143
4144         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4145                 return -EINVAL;
4146
4147         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4148
4149         return 0;
4150 }
4151
4152 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4153                                       struct station_parameters *params)
4154 {
4155         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4156                 params->supported_channels =
4157                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4158                 params->supported_channels_len =
4159                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4160                 /*
4161                  * Need to include at least one (first channel, number of
4162                  * channels) tuple for each subband, and must have proper
4163                  * tuples for the rest of the data as well.
4164                  */
4165                 if (params->supported_channels_len < 2)
4166                         return -EINVAL;
4167                 if (params->supported_channels_len % 2)
4168                         return -EINVAL;
4169         }
4170
4171         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4172                 params->supported_oper_classes =
4173                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4174                 params->supported_oper_classes_len =
4175                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4176                 /*
4177                  * The value of the Length field of the Supported Operating
4178                  * Classes element is between 2 and 253.
4179                  */
4180                 if (params->supported_oper_classes_len < 2 ||
4181                     params->supported_oper_classes_len > 253)
4182                         return -EINVAL;
4183         }
4184         return 0;
4185 }
4186
4187 static int nl80211_set_station_tdls(struct genl_info *info,
4188                                     struct station_parameters *params)
4189 {
4190         int err;
4191         /* Dummy STA entry gets updated once the peer capabilities are known */
4192         if (info->attrs[NL80211_ATTR_PEER_AID])
4193                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4194         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4195                 params->ht_capa =
4196                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4197         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4198                 params->vht_capa =
4199                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4200
4201         err = nl80211_parse_sta_channel_info(info, params);
4202         if (err)
4203                 return err;
4204
4205         return nl80211_parse_sta_wme(info, params);
4206 }
4207
4208 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4209 {
4210         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4211         struct net_device *dev = info->user_ptr[1];
4212         struct station_parameters params;
4213         u8 *mac_addr;
4214         int err;
4215
4216         memset(&params, 0, sizeof(params));
4217
4218         params.listen_interval = -1;
4219
4220         if (!rdev->ops->change_station)
4221                 return -EOPNOTSUPP;
4222
4223         if (info->attrs[NL80211_ATTR_STA_AID])
4224                 return -EINVAL;
4225
4226         if (!info->attrs[NL80211_ATTR_MAC])
4227                 return -EINVAL;
4228
4229         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4230
4231         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4232                 params.supported_rates =
4233                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4234                 params.supported_rates_len =
4235                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4236         }
4237
4238         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4239                 params.capability =
4240                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4241                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4242         }
4243
4244         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4245                 params.ext_capab =
4246                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4247                 params.ext_capab_len =
4248                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4249         }
4250
4251         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4252                 return -EINVAL;
4253
4254         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4255                 return -EINVAL;
4256
4257         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4258                 params.plink_action =
4259                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4260                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4261                         return -EINVAL;
4262         }
4263
4264         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4265                 params.plink_state =
4266                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4267                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4268                         return -EINVAL;
4269                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4270         }
4271
4272         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4273                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4274                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4275
4276                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4277                     pm > NL80211_MESH_POWER_MAX)
4278                         return -EINVAL;
4279
4280                 params.local_pm = pm;
4281         }
4282
4283         /* Include parameters for TDLS peer (will check later) */
4284         err = nl80211_set_station_tdls(info, &params);
4285         if (err)
4286                 return err;
4287
4288         params.vlan = get_vlan(info, rdev);
4289         if (IS_ERR(params.vlan))
4290                 return PTR_ERR(params.vlan);
4291
4292         switch (dev->ieee80211_ptr->iftype) {
4293         case NL80211_IFTYPE_AP:
4294         case NL80211_IFTYPE_AP_VLAN:
4295         case NL80211_IFTYPE_P2P_GO:
4296         case NL80211_IFTYPE_P2P_CLIENT:
4297         case NL80211_IFTYPE_STATION:
4298         case NL80211_IFTYPE_ADHOC:
4299         case NL80211_IFTYPE_MESH_POINT:
4300                 break;
4301         default:
4302                 err = -EOPNOTSUPP;
4303                 goto out_put_vlan;
4304         }
4305
4306         /* driver will call cfg80211_check_station_change() */
4307         err = rdev_change_station(rdev, dev, mac_addr, &params);
4308
4309  out_put_vlan:
4310         if (params.vlan)
4311                 dev_put(params.vlan);
4312
4313         return err;
4314 }
4315
4316 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4317 {
4318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4319         int err;
4320         struct net_device *dev = info->user_ptr[1];
4321         struct station_parameters params;
4322         u8 *mac_addr = NULL;
4323
4324         memset(&params, 0, sizeof(params));
4325
4326         if (!rdev->ops->add_station)
4327                 return -EOPNOTSUPP;
4328
4329         if (!info->attrs[NL80211_ATTR_MAC])
4330                 return -EINVAL;
4331
4332         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4333                 return -EINVAL;
4334
4335         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4336                 return -EINVAL;
4337
4338         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4339             !info->attrs[NL80211_ATTR_PEER_AID])
4340                 return -EINVAL;
4341
4342         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4343         params.supported_rates =
4344                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4345         params.supported_rates_len =
4346                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4347         params.listen_interval =
4348                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4349
4350         if (info->attrs[NL80211_ATTR_PEER_AID])
4351                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4352         else
4353                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4354         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4355                 return -EINVAL;
4356
4357         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4358                 params.capability =
4359                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4360                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4361         }
4362
4363         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4364                 params.ext_capab =
4365                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4366                 params.ext_capab_len =
4367                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4368         }
4369
4370         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4371                 params.ht_capa =
4372                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4373
4374         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4375                 params.vht_capa =
4376                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4377
4378         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4379                 params.opmode_notif_used = true;
4380                 params.opmode_notif =
4381                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4382         }
4383
4384         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4385                 params.plink_action =
4386                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4387                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4388                         return -EINVAL;
4389         }
4390
4391         err = nl80211_parse_sta_channel_info(info, &params);
4392         if (err)
4393                 return err;
4394
4395         err = nl80211_parse_sta_wme(info, &params);
4396         if (err)
4397                 return err;
4398
4399         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4400                 return -EINVAL;
4401
4402         /* When you run into this, adjust the code below for the new flag */
4403         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4404
4405         switch (dev->ieee80211_ptr->iftype) {
4406         case NL80211_IFTYPE_AP:
4407         case NL80211_IFTYPE_AP_VLAN:
4408         case NL80211_IFTYPE_P2P_GO:
4409                 /* ignore WME attributes if iface/sta is not capable */
4410                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4411                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4412                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4413
4414                 /* TDLS peers cannot be added */
4415                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4416                     info->attrs[NL80211_ATTR_PEER_AID])
4417                         return -EINVAL;
4418                 /* but don't bother the driver with it */
4419                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4420
4421                 /* allow authenticated/associated only if driver handles it */
4422                 if (!(rdev->wiphy.features &
4423                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4424                     params.sta_flags_mask &
4425                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4426                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4427                         return -EINVAL;
4428
4429                 /* must be last in here for error handling */
4430                 params.vlan = get_vlan(info, rdev);
4431                 if (IS_ERR(params.vlan))
4432                         return PTR_ERR(params.vlan);
4433                 break;
4434         case NL80211_IFTYPE_MESH_POINT:
4435                 /* ignore uAPSD data */
4436                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4437
4438                 /* associated is disallowed */
4439                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4440                         return -EINVAL;
4441                 /* TDLS peers cannot be added */
4442                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4443                     info->attrs[NL80211_ATTR_PEER_AID])
4444                         return -EINVAL;
4445                 break;
4446         case NL80211_IFTYPE_STATION:
4447         case NL80211_IFTYPE_P2P_CLIENT:
4448                 /* ignore uAPSD data */
4449                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4450
4451                 /* these are disallowed */
4452                 if (params.sta_flags_mask &
4453                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4454                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4455                         return -EINVAL;
4456                 /* Only TDLS peers can be added */
4457                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4458                         return -EINVAL;
4459                 /* Can only add if TDLS ... */
4460                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4461                         return -EOPNOTSUPP;
4462                 /* ... with external setup is supported */
4463                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4464                         return -EOPNOTSUPP;
4465                 /*
4466                  * Older wpa_supplicant versions always mark the TDLS peer
4467                  * as authorized, but it shouldn't yet be.
4468                  */
4469                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4470                 break;
4471         default:
4472                 return -EOPNOTSUPP;
4473         }
4474
4475         /* be aware of params.vlan when changing code here */
4476
4477         err = rdev_add_station(rdev, dev, mac_addr, &params);
4478
4479         if (params.vlan)
4480                 dev_put(params.vlan);
4481         return err;
4482 }
4483
4484 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4485 {
4486         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4487         struct net_device *dev = info->user_ptr[1];
4488         struct station_del_parameters params;
4489
4490         memset(&params, 0, sizeof(params));
4491
4492         if (info->attrs[NL80211_ATTR_MAC])
4493                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4494
4495         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4496             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4497             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4498             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4499                 return -EINVAL;
4500
4501         if (!rdev->ops->del_station)
4502                 return -EOPNOTSUPP;
4503
4504         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4505                 params.subtype =
4506                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4507                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4508                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4509                         return -EINVAL;
4510         } else {
4511                 /* Default to Deauthentication frame */
4512                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4513         }
4514
4515         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4516                 params.reason_code =
4517                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4518                 if (params.reason_code == 0)
4519                         return -EINVAL; /* 0 is reserved */
4520         } else {
4521                 /* Default to reason code 2 */
4522                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4523         }
4524
4525         return rdev_del_station(rdev, dev, &params);
4526 }
4527
4528 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4529                                 int flags, struct net_device *dev,
4530                                 u8 *dst, u8 *next_hop,
4531                                 struct mpath_info *pinfo)
4532 {
4533         void *hdr;
4534         struct nlattr *pinfoattr;
4535
4536         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4537         if (!hdr)
4538                 return -1;
4539
4540         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4541             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4542             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4543             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4544                 goto nla_put_failure;
4545
4546         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4547         if (!pinfoattr)
4548                 goto nla_put_failure;
4549         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4550             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4551                         pinfo->frame_qlen))
4552                 goto nla_put_failure;
4553         if (((pinfo->filled & MPATH_INFO_SN) &&
4554              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4555             ((pinfo->filled & MPATH_INFO_METRIC) &&
4556              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4557                          pinfo->metric)) ||
4558             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4559              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4560                          pinfo->exptime)) ||
4561             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4562              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4563                         pinfo->flags)) ||
4564             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4565              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4566                          pinfo->discovery_timeout)) ||
4567             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4568              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4569                         pinfo->discovery_retries)))
4570                 goto nla_put_failure;
4571
4572         nla_nest_end(msg, pinfoattr);
4573
4574         genlmsg_end(msg, hdr);
4575         return 0;
4576
4577  nla_put_failure:
4578         genlmsg_cancel(msg, hdr);
4579         return -EMSGSIZE;
4580 }
4581
4582 static int nl80211_dump_mpath(struct sk_buff *skb,
4583                               struct netlink_callback *cb)
4584 {
4585         struct mpath_info pinfo;
4586         struct cfg80211_registered_device *rdev;
4587         struct wireless_dev *wdev;
4588         u8 dst[ETH_ALEN];
4589         u8 next_hop[ETH_ALEN];
4590         int path_idx = cb->args[2];
4591         int err;
4592
4593         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4594         if (err)
4595                 return err;
4596
4597         if (!rdev->ops->dump_mpath) {
4598                 err = -EOPNOTSUPP;
4599                 goto out_err;
4600         }
4601
4602         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4603                 err = -EOPNOTSUPP;
4604                 goto out_err;
4605         }
4606
4607         while (1) {
4608                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4609                                       next_hop, &pinfo);
4610                 if (err == -ENOENT)
4611                         break;
4612                 if (err)
4613                         goto out_err;
4614
4615                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4616                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4617                                        wdev->netdev, dst, next_hop,
4618                                        &pinfo) < 0)
4619                         goto out;
4620
4621                 path_idx++;
4622         }
4623
4624
4625  out:
4626         cb->args[2] = path_idx;
4627         err = skb->len;
4628  out_err:
4629         nl80211_finish_wdev_dump(rdev);
4630         return err;
4631 }
4632
4633 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4634 {
4635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4636         int err;
4637         struct net_device *dev = info->user_ptr[1];
4638         struct mpath_info pinfo;
4639         struct sk_buff *msg;
4640         u8 *dst = NULL;
4641         u8 next_hop[ETH_ALEN];
4642
4643         memset(&pinfo, 0, sizeof(pinfo));
4644
4645         if (!info->attrs[NL80211_ATTR_MAC])
4646                 return -EINVAL;
4647
4648         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4649
4650         if (!rdev->ops->get_mpath)
4651                 return -EOPNOTSUPP;
4652
4653         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4654                 return -EOPNOTSUPP;
4655
4656         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4657         if (err)
4658                 return err;
4659
4660         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4661         if (!msg)
4662                 return -ENOMEM;
4663
4664         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4665                                  dev, dst, next_hop, &pinfo) < 0) {
4666                 nlmsg_free(msg);
4667                 return -ENOBUFS;
4668         }
4669
4670         return genlmsg_reply(msg, info);
4671 }
4672
4673 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4674 {
4675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4676         struct net_device *dev = info->user_ptr[1];
4677         u8 *dst = NULL;
4678         u8 *next_hop = NULL;
4679
4680         if (!info->attrs[NL80211_ATTR_MAC])
4681                 return -EINVAL;
4682
4683         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4684                 return -EINVAL;
4685
4686         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4687         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4688
4689         if (!rdev->ops->change_mpath)
4690                 return -EOPNOTSUPP;
4691
4692         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4693                 return -EOPNOTSUPP;
4694
4695         return rdev_change_mpath(rdev, dev, dst, next_hop);
4696 }
4697
4698 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4699 {
4700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4701         struct net_device *dev = info->user_ptr[1];
4702         u8 *dst = NULL;
4703         u8 *next_hop = NULL;
4704
4705         if (!info->attrs[NL80211_ATTR_MAC])
4706                 return -EINVAL;
4707
4708         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4709                 return -EINVAL;
4710
4711         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4712         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4713
4714         if (!rdev->ops->add_mpath)
4715                 return -EOPNOTSUPP;
4716
4717         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4718                 return -EOPNOTSUPP;
4719
4720         return rdev_add_mpath(rdev, dev, dst, next_hop);
4721 }
4722
4723 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4724 {
4725         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4726         struct net_device *dev = info->user_ptr[1];
4727         u8 *dst = NULL;
4728
4729         if (info->attrs[NL80211_ATTR_MAC])
4730                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4731
4732         if (!rdev->ops->del_mpath)
4733                 return -EOPNOTSUPP;
4734
4735         return rdev_del_mpath(rdev, dev, dst);
4736 }
4737
4738 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4739 {
4740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4741         int err;
4742         struct net_device *dev = info->user_ptr[1];
4743         struct mpath_info pinfo;
4744         struct sk_buff *msg;
4745         u8 *dst = NULL;
4746         u8 mpp[ETH_ALEN];
4747
4748         memset(&pinfo, 0, sizeof(pinfo));
4749
4750         if (!info->attrs[NL80211_ATTR_MAC])
4751                 return -EINVAL;
4752
4753         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4754
4755         if (!rdev->ops->get_mpp)
4756                 return -EOPNOTSUPP;
4757
4758         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4759                 return -EOPNOTSUPP;
4760
4761         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4762         if (err)
4763                 return err;
4764
4765         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4766         if (!msg)
4767                 return -ENOMEM;
4768
4769         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4770                                dev, dst, mpp, &pinfo) < 0) {
4771                 nlmsg_free(msg);
4772                 return -ENOBUFS;
4773         }
4774
4775         return genlmsg_reply(msg, info);
4776 }
4777
4778 static int nl80211_dump_mpp(struct sk_buff *skb,
4779                             struct netlink_callback *cb)
4780 {
4781         struct mpath_info pinfo;
4782         struct cfg80211_registered_device *rdev;
4783         struct wireless_dev *wdev;
4784         u8 dst[ETH_ALEN];
4785         u8 mpp[ETH_ALEN];
4786         int path_idx = cb->args[2];
4787         int err;
4788
4789         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4790         if (err)
4791                 return err;
4792
4793         if (!rdev->ops->dump_mpp) {
4794                 err = -EOPNOTSUPP;
4795                 goto out_err;
4796         }
4797
4798         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4799                 err = -EOPNOTSUPP;
4800                 goto out_err;
4801         }
4802
4803         while (1) {
4804                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4805                                     mpp, &pinfo);
4806                 if (err == -ENOENT)
4807                         break;
4808                 if (err)
4809                         goto out_err;
4810
4811                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4812                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4813                                        wdev->netdev, dst, mpp,
4814                                        &pinfo) < 0)
4815                         goto out;
4816
4817                 path_idx++;
4818         }
4819
4820  out:
4821         cb->args[2] = path_idx;
4822         err = skb->len;
4823  out_err:
4824         nl80211_finish_wdev_dump(rdev);
4825         return err;
4826 }
4827
4828 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4829 {
4830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4831         struct net_device *dev = info->user_ptr[1];
4832         struct wireless_dev *wdev = dev->ieee80211_ptr;
4833         struct bss_parameters params;
4834         int err;
4835
4836         memset(&params, 0, sizeof(params));
4837         /* default to not changing parameters */
4838         params.use_cts_prot = -1;
4839         params.use_short_preamble = -1;
4840         params.use_short_slot_time = -1;
4841         params.ap_isolate = -1;
4842         params.ht_opmode = -1;
4843         params.p2p_ctwindow = -1;
4844         params.p2p_opp_ps = -1;
4845
4846         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4847                 params.use_cts_prot =
4848                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4849         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4850                 params.use_short_preamble =
4851                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4852         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4853                 params.use_short_slot_time =
4854                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4855         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4856                 params.basic_rates =
4857                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4858                 params.basic_rates_len =
4859                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4860         }
4861         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4862                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4863         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4864                 params.ht_opmode =
4865                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4866
4867         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4868                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4869                         return -EINVAL;
4870                 params.p2p_ctwindow =
4871                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4872                 if (params.p2p_ctwindow < 0)
4873                         return -EINVAL;
4874                 if (params.p2p_ctwindow != 0 &&
4875                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4876                         return -EINVAL;
4877         }
4878
4879         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4880                 u8 tmp;
4881
4882                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4883                         return -EINVAL;
4884                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4885                 if (tmp > 1)
4886                         return -EINVAL;
4887                 params.p2p_opp_ps = tmp;
4888                 if (params.p2p_opp_ps &&
4889                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4890                         return -EINVAL;
4891         }
4892
4893         if (!rdev->ops->change_bss)
4894                 return -EOPNOTSUPP;
4895
4896         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4897             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4898                 return -EOPNOTSUPP;
4899
4900         wdev_lock(wdev);
4901         err = rdev_change_bss(rdev, dev, &params);
4902         wdev_unlock(wdev);
4903
4904         return err;
4905 }
4906
4907 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4908         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4909         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4910         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4911         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4912         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4913         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4914         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4915 };
4916
4917 static int parse_reg_rule(struct nlattr *tb[],
4918         struct ieee80211_reg_rule *reg_rule)
4919 {
4920         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4921         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4922
4923         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4924                 return -EINVAL;
4925         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4926                 return -EINVAL;
4927         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4928                 return -EINVAL;
4929         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4930                 return -EINVAL;
4931         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4932                 return -EINVAL;
4933
4934         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4935
4936         freq_range->start_freq_khz =
4937                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4938         freq_range->end_freq_khz =
4939                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4940         freq_range->max_bandwidth_khz =
4941                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4942
4943         power_rule->max_eirp =
4944                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4945
4946         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4947                 power_rule->max_antenna_gain =
4948                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4949
4950         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4951                 reg_rule->dfs_cac_ms =
4952                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4953
4954         return 0;
4955 }
4956
4957 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4958 {
4959         char *data = NULL;
4960         enum nl80211_user_reg_hint_type user_reg_hint_type;
4961
4962         /*
4963          * You should only get this when cfg80211 hasn't yet initialized
4964          * completely when built-in to the kernel right between the time
4965          * window between nl80211_init() and regulatory_init(), if that is
4966          * even possible.
4967          */
4968         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4969                 return -EINPROGRESS;
4970
4971         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4972                 user_reg_hint_type =
4973                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4974         else
4975                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4976
4977         switch (user_reg_hint_type) {
4978         case NL80211_USER_REG_HINT_USER:
4979         case NL80211_USER_REG_HINT_CELL_BASE:
4980                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4981                         return -EINVAL;
4982
4983                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4984                 return regulatory_hint_user(data, user_reg_hint_type);
4985         case NL80211_USER_REG_HINT_INDOOR:
4986                 return regulatory_hint_indoor_user();
4987         default:
4988                 return -EINVAL;
4989         }
4990 }
4991
4992 static int nl80211_get_mesh_config(struct sk_buff *skb,
4993                                    struct genl_info *info)
4994 {
4995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4996         struct net_device *dev = info->user_ptr[1];
4997         struct wireless_dev *wdev = dev->ieee80211_ptr;
4998         struct mesh_config cur_params;
4999         int err = 0;
5000         void *hdr;
5001         struct nlattr *pinfoattr;
5002         struct sk_buff *msg;
5003
5004         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5005                 return -EOPNOTSUPP;
5006
5007         if (!rdev->ops->get_mesh_config)
5008                 return -EOPNOTSUPP;
5009
5010         wdev_lock(wdev);
5011         /* If not connected, get default parameters */
5012         if (!wdev->mesh_id_len)
5013                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5014         else
5015                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5016         wdev_unlock(wdev);
5017
5018         if (err)
5019                 return err;
5020
5021         /* Draw up a netlink message to send back */
5022         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5023         if (!msg)
5024                 return -ENOMEM;
5025         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5026                              NL80211_CMD_GET_MESH_CONFIG);
5027         if (!hdr)
5028                 goto out;
5029         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5030         if (!pinfoattr)
5031                 goto nla_put_failure;
5032         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5033             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5034                         cur_params.dot11MeshRetryTimeout) ||
5035             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5036                         cur_params.dot11MeshConfirmTimeout) ||
5037             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5038                         cur_params.dot11MeshHoldingTimeout) ||
5039             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5040                         cur_params.dot11MeshMaxPeerLinks) ||
5041             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5042                        cur_params.dot11MeshMaxRetries) ||
5043             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5044                        cur_params.dot11MeshTTL) ||
5045             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5046                        cur_params.element_ttl) ||
5047             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5048                        cur_params.auto_open_plinks) ||
5049             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5050                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5051             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5052                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5053             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5054                         cur_params.path_refresh_time) ||
5055             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5056                         cur_params.min_discovery_timeout) ||
5057             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5058                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5059             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5060                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5061             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5062                         cur_params.dot11MeshHWMPperrMinInterval) ||
5063             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5064                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5065             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5066                        cur_params.dot11MeshHWMPRootMode) ||
5067             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5068                         cur_params.dot11MeshHWMPRannInterval) ||
5069             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5070                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5071             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5072                        cur_params.dot11MeshForwarding) ||
5073             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5074                         cur_params.rssi_threshold) ||
5075             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5076                         cur_params.ht_opmode) ||
5077             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5078                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5079             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5080                         cur_params.dot11MeshHWMProotInterval) ||
5081             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5082                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5083             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5084                         cur_params.power_mode) ||
5085             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5086                         cur_params.dot11MeshAwakeWindowDuration) ||
5087             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5088                         cur_params.plink_timeout))
5089                 goto nla_put_failure;
5090         nla_nest_end(msg, pinfoattr);
5091         genlmsg_end(msg, hdr);
5092         return genlmsg_reply(msg, info);
5093
5094  nla_put_failure:
5095         genlmsg_cancel(msg, hdr);
5096  out:
5097         nlmsg_free(msg);
5098         return -ENOBUFS;
5099 }
5100
5101 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5102         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5103         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5104         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5105         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5106         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5107         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5108         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5109         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5110         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5111         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5112         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5113         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5114         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5115         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5116         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5117         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5118         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5119         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5120         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5121         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5122         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5123         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5124         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5125         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5126         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5127         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5128         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5129         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5130 };
5131
5132 static const struct nla_policy
5133         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5134         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5135         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5136         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5137         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5138         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5139         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5140         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5141                                     .len = IEEE80211_MAX_DATA_LEN },
5142         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5143 };
5144
5145 static int nl80211_parse_mesh_config(struct genl_info *info,
5146                                      struct mesh_config *cfg,
5147                                      u32 *mask_out)
5148 {
5149         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5150         u32 mask = 0;
5151
5152 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5153 do {                                                                        \
5154         if (tb[attr]) {                                                     \
5155                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5156                         return -EINVAL;                                     \
5157                 cfg->param = fn(tb[attr]);                                  \
5158                 mask |= (1 << (attr - 1));                                  \
5159         }                                                                   \
5160 } while (0)
5161
5162
5163         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5164                 return -EINVAL;
5165         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5166                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5167                              nl80211_meshconf_params_policy))
5168                 return -EINVAL;
5169
5170         /* This makes sure that there aren't more than 32 mesh config
5171          * parameters (otherwise our bitfield scheme would not work.) */
5172         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5173
5174         /* Fill in the params struct */
5175         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5176                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5177                                   nla_get_u16);
5178         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5179                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5180                                   nla_get_u16);
5181         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5182                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5183                                   nla_get_u16);
5184         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5185                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5186                                   nla_get_u16);
5187         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5188                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5189                                   nla_get_u8);
5190         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5191                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5192         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5193                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5194                                   nla_get_u8);
5195         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5196                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5197                                   nla_get_u8);
5198         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5199                                   1, 255, mask,
5200                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5201                                   nla_get_u32);
5202         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5203                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5204                                   nla_get_u8);
5205         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5206                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5207                                   nla_get_u32);
5208         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5209                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5210                                   nla_get_u16);
5211         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5212                                   1, 65535, mask,
5213                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5214                                   nla_get_u32);
5215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5216                                   1, 65535, mask,
5217                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5218                                   nla_get_u16);
5219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5220                                   1, 65535, mask,
5221                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5222                                   nla_get_u16);
5223         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5224                                   dot11MeshHWMPnetDiameterTraversalTime,
5225                                   1, 65535, mask,
5226                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5227                                   nla_get_u16);
5228         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5229                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5230                                   nla_get_u8);
5231         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5232                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5233                                   nla_get_u16);
5234         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5235                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5236                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5237                                   nla_get_u8);
5238         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5239                                   mask, NL80211_MESHCONF_FORWARDING,
5240                                   nla_get_u8);
5241         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5242                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5243                                   nla_get_s32);
5244         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5245                                   mask, NL80211_MESHCONF_HT_OPMODE,
5246                                   nla_get_u16);
5247         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5248                                   1, 65535, mask,
5249                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5250                                   nla_get_u32);
5251         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5252                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5253                                   nla_get_u16);
5254         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5255                                   dot11MeshHWMPconfirmationInterval,
5256                                   1, 65535, mask,
5257                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5258                                   nla_get_u16);
5259         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5260                                   NL80211_MESH_POWER_ACTIVE,
5261                                   NL80211_MESH_POWER_MAX,
5262                                   mask, NL80211_MESHCONF_POWER_MODE,
5263                                   nla_get_u32);
5264         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5265                                   0, 65535, mask,
5266                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5267         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5268                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5269                                   nla_get_u32);
5270         if (mask_out)
5271                 *mask_out = mask;
5272
5273         return 0;
5274
5275 #undef FILL_IN_MESH_PARAM_IF_SET
5276 }
5277
5278 static int nl80211_parse_mesh_setup(struct genl_info *info,
5279                                      struct mesh_setup *setup)
5280 {
5281         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5282         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5283
5284         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5285                 return -EINVAL;
5286         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5287                              info->attrs[NL80211_ATTR_MESH_SETUP],
5288                              nl80211_mesh_setup_params_policy))
5289                 return -EINVAL;
5290
5291         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5292                 setup->sync_method =
5293                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5294                  IEEE80211_SYNC_METHOD_VENDOR :
5295                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5296
5297         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5298                 setup->path_sel_proto =
5299                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5300                  IEEE80211_PATH_PROTOCOL_VENDOR :
5301                  IEEE80211_PATH_PROTOCOL_HWMP;
5302
5303         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5304                 setup->path_metric =
5305                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5306                  IEEE80211_PATH_METRIC_VENDOR :
5307                  IEEE80211_PATH_METRIC_AIRTIME;
5308
5309
5310         if (tb[NL80211_MESH_SETUP_IE]) {
5311                 struct nlattr *ieattr =
5312                         tb[NL80211_MESH_SETUP_IE];
5313                 if (!is_valid_ie_attr(ieattr))
5314                         return -EINVAL;
5315                 setup->ie = nla_data(ieattr);
5316                 setup->ie_len = nla_len(ieattr);
5317         }
5318         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5319             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5320                 return -EINVAL;
5321         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5322         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5323         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5324         if (setup->is_secure)
5325                 setup->user_mpm = true;
5326
5327         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5328                 if (!setup->user_mpm)
5329                         return -EINVAL;
5330                 setup->auth_id =
5331                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5332         }
5333
5334         return 0;
5335 }
5336
5337 static int nl80211_update_mesh_config(struct sk_buff *skb,
5338                                       struct genl_info *info)
5339 {
5340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5341         struct net_device *dev = info->user_ptr[1];
5342         struct wireless_dev *wdev = dev->ieee80211_ptr;
5343         struct mesh_config cfg;
5344         u32 mask;
5345         int err;
5346
5347         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5348                 return -EOPNOTSUPP;
5349
5350         if (!rdev->ops->update_mesh_config)
5351                 return -EOPNOTSUPP;
5352
5353         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5354         if (err)
5355                 return err;
5356
5357         wdev_lock(wdev);
5358         if (!wdev->mesh_id_len)
5359                 err = -ENOLINK;
5360
5361         if (!err)
5362                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5363
5364         wdev_unlock(wdev);
5365
5366         return err;
5367 }
5368
5369 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5370                               struct sk_buff *msg)
5371 {
5372         struct nlattr *nl_reg_rules;
5373         unsigned int i;
5374
5375         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5376             (regdom->dfs_region &&
5377              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5378                 goto nla_put_failure;
5379
5380         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5381         if (!nl_reg_rules)
5382                 goto nla_put_failure;
5383
5384         for (i = 0; i < regdom->n_reg_rules; i++) {
5385                 struct nlattr *nl_reg_rule;
5386                 const struct ieee80211_reg_rule *reg_rule;
5387                 const struct ieee80211_freq_range *freq_range;
5388                 const struct ieee80211_power_rule *power_rule;
5389                 unsigned int max_bandwidth_khz;
5390
5391                 reg_rule = &regdom->reg_rules[i];
5392                 freq_range = &reg_rule->freq_range;
5393                 power_rule = &reg_rule->power_rule;
5394
5395                 nl_reg_rule = nla_nest_start(msg, i);
5396                 if (!nl_reg_rule)
5397                         goto nla_put_failure;
5398
5399                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5400                 if (!max_bandwidth_khz)
5401                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5402                                                                   reg_rule);
5403
5404                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5405                                 reg_rule->flags) ||
5406                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5407                                 freq_range->start_freq_khz) ||
5408                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5409                                 freq_range->end_freq_khz) ||
5410                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5411                                 max_bandwidth_khz) ||
5412                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5413                                 power_rule->max_antenna_gain) ||
5414                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5415                                 power_rule->max_eirp) ||
5416                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5417                                 reg_rule->dfs_cac_ms))
5418                         goto nla_put_failure;
5419
5420                 nla_nest_end(msg, nl_reg_rule);
5421         }
5422
5423         nla_nest_end(msg, nl_reg_rules);
5424         return 0;
5425
5426 nla_put_failure:
5427         return -EMSGSIZE;
5428 }
5429
5430 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5431 {
5432         const struct ieee80211_regdomain *regdom = NULL;
5433         struct cfg80211_registered_device *rdev;
5434         struct wiphy *wiphy = NULL;
5435         struct sk_buff *msg;
5436         void *hdr;
5437
5438         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5439         if (!msg)
5440                 return -ENOBUFS;
5441
5442         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5443                              NL80211_CMD_GET_REG);
5444         if (!hdr)
5445                 goto put_failure;
5446
5447         if (info->attrs[NL80211_ATTR_WIPHY]) {
5448                 bool self_managed;
5449
5450                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5451                 if (IS_ERR(rdev)) {
5452                         nlmsg_free(msg);
5453                         return PTR_ERR(rdev);
5454                 }
5455
5456                 wiphy = &rdev->wiphy;
5457                 self_managed = wiphy->regulatory_flags &
5458                                REGULATORY_WIPHY_SELF_MANAGED;
5459                 regdom = get_wiphy_regdom(wiphy);
5460
5461                 /* a self-managed-reg device must have a private regdom */
5462                 if (WARN_ON(!regdom && self_managed)) {
5463                         nlmsg_free(msg);
5464                         return -EINVAL;
5465                 }
5466
5467                 if (regdom &&
5468                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5469                         goto nla_put_failure;
5470         }
5471
5472         if (!wiphy && reg_last_request_cell_base() &&
5473             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5474                         NL80211_USER_REG_HINT_CELL_BASE))
5475                 goto nla_put_failure;
5476
5477         rcu_read_lock();
5478
5479         if (!regdom)
5480                 regdom = rcu_dereference(cfg80211_regdomain);
5481
5482         if (nl80211_put_regdom(regdom, msg))
5483                 goto nla_put_failure_rcu;
5484
5485         rcu_read_unlock();
5486
5487         genlmsg_end(msg, hdr);
5488         return genlmsg_reply(msg, info);
5489
5490 nla_put_failure_rcu:
5491         rcu_read_unlock();
5492 nla_put_failure:
5493         genlmsg_cancel(msg, hdr);
5494 put_failure:
5495         nlmsg_free(msg);
5496         return -EMSGSIZE;
5497 }
5498
5499 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5500                                u32 seq, int flags, struct wiphy *wiphy,
5501                                const struct ieee80211_regdomain *regdom)
5502 {
5503         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5504                                    NL80211_CMD_GET_REG);
5505
5506         if (!hdr)
5507                 return -1;
5508
5509         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5510
5511         if (nl80211_put_regdom(regdom, msg))
5512                 goto nla_put_failure;
5513
5514         if (!wiphy && reg_last_request_cell_base() &&
5515             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5516                         NL80211_USER_REG_HINT_CELL_BASE))
5517                 goto nla_put_failure;
5518
5519         if (wiphy &&
5520             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5521                 goto nla_put_failure;
5522
5523         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5524             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5525                 goto nla_put_failure;
5526
5527         genlmsg_end(msg, hdr);
5528         return 0;
5529
5530 nla_put_failure:
5531         genlmsg_cancel(msg, hdr);
5532         return -EMSGSIZE;
5533 }
5534
5535 static int nl80211_get_reg_dump(struct sk_buff *skb,
5536                                 struct netlink_callback *cb)
5537 {
5538         const struct ieee80211_regdomain *regdom = NULL;
5539         struct cfg80211_registered_device *rdev;
5540         int err, reg_idx, start = cb->args[2];
5541
5542         rtnl_lock();
5543
5544         if (cfg80211_regdomain && start == 0) {
5545                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5546                                           NLM_F_MULTI, NULL,
5547                                           rtnl_dereference(cfg80211_regdomain));
5548                 if (err < 0)
5549                         goto out_err;
5550         }
5551
5552         /* the global regdom is idx 0 */
5553         reg_idx = 1;
5554         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5555                 regdom = get_wiphy_regdom(&rdev->wiphy);
5556                 if (!regdom)
5557                         continue;
5558
5559                 if (++reg_idx <= start)
5560                         continue;
5561
5562                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5563                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5564                 if (err < 0) {
5565                         reg_idx--;
5566                         break;
5567                 }
5568         }
5569
5570         cb->args[2] = reg_idx;
5571         err = skb->len;
5572 out_err:
5573         rtnl_unlock();
5574         return err;
5575 }
5576
5577 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5578 {
5579         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5580         struct nlattr *nl_reg_rule;
5581         char *alpha2;
5582         int rem_reg_rules, r;
5583         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5584         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5585         struct ieee80211_regdomain *rd;
5586
5587         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5588                 return -EINVAL;
5589
5590         if (!info->attrs[NL80211_ATTR_REG_RULES])
5591                 return -EINVAL;
5592
5593         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5594
5595         if (info->attrs[NL80211_ATTR_DFS_REGION])
5596                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5597
5598         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5599                             rem_reg_rules) {
5600                 num_rules++;
5601                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5602                         return -EINVAL;
5603         }
5604
5605         if (!reg_is_valid_request(alpha2))
5606                 return -EINVAL;
5607
5608         size_of_regd = sizeof(struct ieee80211_regdomain) +
5609                        num_rules * sizeof(struct ieee80211_reg_rule);
5610
5611         rd = kzalloc(size_of_regd, GFP_KERNEL);
5612         if (!rd)
5613                 return -ENOMEM;
5614
5615         rd->n_reg_rules = num_rules;
5616         rd->alpha2[0] = alpha2[0];
5617         rd->alpha2[1] = alpha2[1];
5618
5619         /*
5620          * Disable DFS master mode if the DFS region was
5621          * not supported or known on this kernel.
5622          */
5623         if (reg_supported_dfs_region(dfs_region))
5624                 rd->dfs_region = dfs_region;
5625
5626         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5627                             rem_reg_rules) {
5628                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5629                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5630                               reg_rule_policy);
5631                 if (r)
5632                         goto bad_reg;
5633                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5634                 if (r)
5635                         goto bad_reg;
5636
5637                 rule_idx++;
5638
5639                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5640                         r = -EINVAL;
5641                         goto bad_reg;
5642                 }
5643         }
5644
5645         r = set_regdom(rd);
5646         /* set_regdom took ownership */
5647         rd = NULL;
5648
5649  bad_reg:
5650         kfree(rd);
5651         return r;
5652 }
5653
5654 static int validate_scan_freqs(struct nlattr *freqs)
5655 {
5656         struct nlattr *attr1, *attr2;
5657         int n_channels = 0, tmp1, tmp2;
5658
5659         nla_for_each_nested(attr1, freqs, tmp1) {
5660                 n_channels++;
5661                 /*
5662                  * Some hardware has a limited channel list for
5663                  * scanning, and it is pretty much nonsensical
5664                  * to scan for a channel twice, so disallow that
5665                  * and don't require drivers to check that the
5666                  * channel list they get isn't longer than what
5667                  * they can scan, as long as they can scan all
5668                  * the channels they registered at once.
5669                  */
5670                 nla_for_each_nested(attr2, freqs, tmp2)
5671                         if (attr1 != attr2 &&
5672                             nla_get_u32(attr1) == nla_get_u32(attr2))
5673                                 return 0;
5674         }
5675
5676         return n_channels;
5677 }
5678
5679 static int nl80211_parse_random_mac(struct nlattr **attrs,
5680                                     u8 *mac_addr, u8 *mac_addr_mask)
5681 {
5682         int i;
5683
5684         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5685                 memset(mac_addr, 0, ETH_ALEN);
5686                 memset(mac_addr_mask, 0, ETH_ALEN);
5687                 mac_addr[0] = 0x2;
5688                 mac_addr_mask[0] = 0x3;
5689
5690                 return 0;
5691         }
5692
5693         /* need both or none */
5694         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5695                 return -EINVAL;
5696
5697         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5698         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5699
5700         /* don't allow or configure an mcast address */
5701         if (!is_multicast_ether_addr(mac_addr_mask) ||
5702             is_multicast_ether_addr(mac_addr))
5703                 return -EINVAL;
5704
5705         /*
5706          * allow users to pass a MAC address that has bits set outside
5707          * of the mask, but don't bother drivers with having to deal
5708          * with such bits
5709          */
5710         for (i = 0; i < ETH_ALEN; i++)
5711                 mac_addr[i] &= mac_addr_mask[i];
5712
5713         return 0;
5714 }
5715
5716 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5717 {
5718         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5719         struct wireless_dev *wdev = info->user_ptr[1];
5720         struct cfg80211_scan_request *request;
5721         struct nlattr *attr;
5722         struct wiphy *wiphy;
5723         int err, tmp, n_ssids = 0, n_channels, i;
5724         size_t ie_len;
5725
5726         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5727                 return -EINVAL;
5728
5729         wiphy = &rdev->wiphy;
5730
5731         if (!rdev->ops->scan)
5732                 return -EOPNOTSUPP;
5733
5734         if (rdev->scan_req || rdev->scan_msg) {
5735                 err = -EBUSY;
5736                 goto unlock;
5737         }
5738
5739         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5740                 n_channels = validate_scan_freqs(
5741                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5742                 if (!n_channels) {
5743                         err = -EINVAL;
5744                         goto unlock;
5745                 }
5746         } else {
5747                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5748         }
5749
5750         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5751                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5752                         n_ssids++;
5753
5754         if (n_ssids > wiphy->max_scan_ssids) {
5755                 err = -EINVAL;
5756                 goto unlock;
5757         }
5758
5759         if (info->attrs[NL80211_ATTR_IE])
5760                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5761         else
5762                 ie_len = 0;
5763
5764         if (ie_len > wiphy->max_scan_ie_len) {
5765                 err = -EINVAL;
5766                 goto unlock;
5767         }
5768
5769         request = kzalloc(sizeof(*request)
5770                         + sizeof(*request->ssids) * n_ssids
5771                         + sizeof(*request->channels) * n_channels
5772                         + ie_len, GFP_KERNEL);
5773         if (!request) {
5774                 err = -ENOMEM;
5775                 goto unlock;
5776         }
5777
5778         if (n_ssids)
5779                 request->ssids = (void *)&request->channels[n_channels];
5780         request->n_ssids = n_ssids;
5781         if (ie_len) {
5782                 if (request->ssids)
5783                         request->ie = (void *)(request->ssids + n_ssids);
5784                 else
5785                         request->ie = (void *)(request->channels + n_channels);
5786         }
5787
5788         i = 0;
5789         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5790                 /* user specified, bail out if channel not found */
5791                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5792                         struct ieee80211_channel *chan;
5793
5794                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5795
5796                         if (!chan) {
5797                                 err = -EINVAL;
5798                                 goto out_free;
5799                         }
5800
5801                         /* ignore disabled channels */
5802                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5803                                 continue;
5804
5805                         request->channels[i] = chan;
5806                         i++;
5807                 }
5808         } else {
5809                 enum ieee80211_band band;
5810
5811                 /* all channels */
5812                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5813                         int j;
5814                         if (!wiphy->bands[band])
5815                                 continue;
5816                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5817                                 struct ieee80211_channel *chan;
5818
5819                                 chan = &wiphy->bands[band]->channels[j];
5820
5821                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5822                                         continue;
5823
5824                                 request->channels[i] = chan;
5825                                 i++;
5826                         }
5827                 }
5828         }
5829
5830         if (!i) {
5831                 err = -EINVAL;
5832                 goto out_free;
5833         }
5834
5835         request->n_channels = i;
5836
5837         i = 0;
5838         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5839                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5840                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5841                                 err = -EINVAL;
5842                                 goto out_free;
5843                         }
5844                         request->ssids[i].ssid_len = nla_len(attr);
5845                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5846                         i++;
5847                 }
5848         }
5849
5850         if (info->attrs[NL80211_ATTR_IE]) {
5851                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5852                 memcpy((void *)request->ie,
5853                        nla_data(info->attrs[NL80211_ATTR_IE]),
5854                        request->ie_len);
5855         }
5856
5857         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5858                 if (wiphy->bands[i])
5859                         request->rates[i] =
5860                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5861
5862         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5863                 nla_for_each_nested(attr,
5864                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5865                                     tmp) {
5866                         enum ieee80211_band band = nla_type(attr);
5867
5868                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5869                                 err = -EINVAL;
5870                                 goto out_free;
5871                         }
5872
5873                         if (!wiphy->bands[band])
5874                                 continue;
5875
5876                         err = ieee80211_get_ratemask(wiphy->bands[band],
5877                                                      nla_data(attr),
5878                                                      nla_len(attr),
5879                                                      &request->rates[band]);
5880                         if (err)
5881                                 goto out_free;
5882                 }
5883         }
5884
5885         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5886                 request->flags = nla_get_u32(
5887                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5888                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5889                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5890                         err = -EOPNOTSUPP;
5891                         goto out_free;
5892                 }
5893
5894                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5895                         if (!(wiphy->features &
5896                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5897                                 err = -EOPNOTSUPP;
5898                                 goto out_free;
5899                         }
5900
5901                         if (wdev->current_bss) {
5902                                 err = -EOPNOTSUPP;
5903                                 goto out_free;
5904                         }
5905
5906                         err = nl80211_parse_random_mac(info->attrs,
5907                                                        request->mac_addr,
5908                                                        request->mac_addr_mask);
5909                         if (err)
5910                                 goto out_free;
5911                 }
5912         }
5913
5914         request->no_cck =
5915                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5916
5917         request->wdev = wdev;
5918         request->wiphy = &rdev->wiphy;
5919         request->scan_start = jiffies;
5920
5921         rdev->scan_req = request;
5922         err = rdev_scan(rdev, request);
5923
5924         if (!err) {
5925                 nl80211_send_scan_start(rdev, wdev);
5926                 if (wdev->netdev)
5927                         dev_hold(wdev->netdev);
5928         } else {
5929  out_free:
5930                 rdev->scan_req = NULL;
5931                 kfree(request);
5932         }
5933
5934  unlock:
5935         return err;
5936 }
5937
5938 static struct cfg80211_sched_scan_request *
5939 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5940                          struct nlattr **attrs)
5941 {
5942         struct cfg80211_sched_scan_request *request;
5943         struct nlattr *attr;
5944         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5945         u32 interval;
5946         enum ieee80211_band band;
5947         size_t ie_len;
5948         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5949         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5950
5951         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5952                 return ERR_PTR(-EINVAL);
5953
5954         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5955                 return ERR_PTR(-EINVAL);
5956
5957         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5958         if (interval == 0)
5959                 return ERR_PTR(-EINVAL);
5960
5961         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5962                 n_channels = validate_scan_freqs(
5963                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5964                 if (!n_channels)
5965                         return ERR_PTR(-EINVAL);
5966         } else {
5967                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5968         }
5969
5970         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5971                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5972                                     tmp)
5973                         n_ssids++;
5974
5975         if (n_ssids > wiphy->max_sched_scan_ssids)
5976                 return ERR_PTR(-EINVAL);
5977
5978         /*
5979          * First, count the number of 'real' matchsets. Due to an issue with
5980          * the old implementation, matchsets containing only the RSSI attribute
5981          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5982          * RSSI for all matchsets, rather than their own matchset for reporting
5983          * all APs with a strong RSSI. This is needed to be compatible with
5984          * older userspace that treated a matchset with only the RSSI as the
5985          * global RSSI for all other matchsets - if there are other matchsets.
5986          */
5987         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5988                 nla_for_each_nested(attr,
5989                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5990                                     tmp) {
5991                         struct nlattr *rssi;
5992
5993                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5994                                         nla_data(attr), nla_len(attr),
5995                                         nl80211_match_policy);
5996                         if (err)
5997                                 return ERR_PTR(err);
5998                         /* add other standalone attributes here */
5999                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6000                                 n_match_sets++;
6001                                 continue;
6002                         }
6003                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6004                         if (rssi)
6005                                 default_match_rssi = nla_get_s32(rssi);
6006                 }
6007         }
6008
6009         /* However, if there's no other matchset, add the RSSI one */
6010         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6011                 n_match_sets = 1;
6012
6013         if (n_match_sets > wiphy->max_match_sets)
6014                 return ERR_PTR(-EINVAL);
6015
6016         if (attrs[NL80211_ATTR_IE])
6017                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6018         else
6019                 ie_len = 0;
6020
6021         if (ie_len > wiphy->max_sched_scan_ie_len)
6022                 return ERR_PTR(-EINVAL);
6023
6024         request = kzalloc(sizeof(*request)
6025                         + sizeof(*request->ssids) * n_ssids
6026                         + sizeof(*request->match_sets) * n_match_sets
6027                         + sizeof(*request->channels) * n_channels
6028                         + ie_len, GFP_KERNEL);
6029         if (!request)
6030                 return ERR_PTR(-ENOMEM);
6031
6032         if (n_ssids)
6033                 request->ssids = (void *)&request->channels[n_channels];
6034         request->n_ssids = n_ssids;
6035         if (ie_len) {
6036                 if (request->ssids)
6037                         request->ie = (void *)(request->ssids + n_ssids);
6038                 else
6039                         request->ie = (void *)(request->channels + n_channels);
6040         }
6041
6042         if (n_match_sets) {
6043                 if (request->ie)
6044                         request->match_sets = (void *)(request->ie + ie_len);
6045                 else if (request->ssids)
6046                         request->match_sets =
6047                                 (void *)(request->ssids + n_ssids);
6048                 else
6049                         request->match_sets =
6050                                 (void *)(request->channels + n_channels);
6051         }
6052         request->n_match_sets = n_match_sets;
6053
6054         i = 0;
6055         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6056                 /* user specified, bail out if channel not found */
6057                 nla_for_each_nested(attr,
6058                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6059                                     tmp) {
6060                         struct ieee80211_channel *chan;
6061
6062                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6063
6064                         if (!chan) {
6065                                 err = -EINVAL;
6066                                 goto out_free;
6067                         }
6068
6069                         /* ignore disabled channels */
6070                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6071                                 continue;
6072
6073                         request->channels[i] = chan;
6074                         i++;
6075                 }
6076         } else {
6077                 /* all channels */
6078                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6079                         int j;
6080                         if (!wiphy->bands[band])
6081                                 continue;
6082                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6083                                 struct ieee80211_channel *chan;
6084
6085                                 chan = &wiphy->bands[band]->channels[j];
6086
6087                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6088                                         continue;
6089
6090                                 request->channels[i] = chan;
6091                                 i++;
6092                         }
6093                 }
6094         }
6095
6096         if (!i) {
6097                 err = -EINVAL;
6098                 goto out_free;
6099         }
6100
6101         request->n_channels = i;
6102
6103         i = 0;
6104         if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6105                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6106                                     tmp) {
6107                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6108                                 err = -EINVAL;
6109                                 goto out_free;
6110                         }
6111                         request->ssids[i].ssid_len = nla_len(attr);
6112                         memcpy(request->ssids[i].ssid, nla_data(attr),
6113                                nla_len(attr));
6114                         i++;
6115                 }
6116         }
6117
6118         i = 0;
6119         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6120                 nla_for_each_nested(attr,
6121                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6122                                     tmp) {
6123                         struct nlattr *ssid, *rssi;
6124
6125                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6126                                         nla_data(attr), nla_len(attr),
6127                                         nl80211_match_policy);
6128                         if (err)
6129                                 goto out_free;
6130                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6131                         if (ssid) {
6132                                 if (WARN_ON(i >= n_match_sets)) {
6133                                         /* this indicates a programming error,
6134                                          * the loop above should have verified
6135                                          * things properly
6136                                          */
6137                                         err = -EINVAL;
6138                                         goto out_free;
6139                                 }
6140
6141                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6142                                         err = -EINVAL;
6143                                         goto out_free;
6144                                 }
6145                                 memcpy(request->match_sets[i].ssid.ssid,
6146                                        nla_data(ssid), nla_len(ssid));
6147                                 request->match_sets[i].ssid.ssid_len =
6148                                         nla_len(ssid);
6149                                 /* special attribute - old implemenation w/a */
6150                                 request->match_sets[i].rssi_thold =
6151                                         default_match_rssi;
6152                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6153                                 if (rssi)
6154                                         request->match_sets[i].rssi_thold =
6155                                                 nla_get_s32(rssi);
6156                         }
6157                         i++;
6158                 }
6159
6160                 /* there was no other matchset, so the RSSI one is alone */
6161                 if (i == 0 && n_match_sets)
6162                         request->match_sets[0].rssi_thold = default_match_rssi;
6163
6164                 request->min_rssi_thold = INT_MAX;
6165                 for (i = 0; i < n_match_sets; i++)
6166                         request->min_rssi_thold =
6167                                 min(request->match_sets[i].rssi_thold,
6168                                     request->min_rssi_thold);
6169         } else {
6170                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6171         }
6172
6173         if (ie_len) {
6174                 request->ie_len = ie_len;
6175                 memcpy((void *)request->ie,
6176                        nla_data(attrs[NL80211_ATTR_IE]),
6177                        request->ie_len);
6178         }
6179
6180         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6181                 request->flags = nla_get_u32(
6182                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6183                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6184                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6185                         err = -EOPNOTSUPP;
6186                         goto out_free;
6187                 }
6188
6189                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6190                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6191
6192                         if (!wdev) /* must be net-detect */
6193                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6194
6195                         if (!(wiphy->features & flg)) {
6196                                 err = -EOPNOTSUPP;
6197                                 goto out_free;
6198                         }
6199
6200                         if (wdev && wdev->current_bss) {
6201                                 err = -EOPNOTSUPP;
6202                                 goto out_free;
6203                         }
6204
6205                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6206                                                        request->mac_addr_mask);
6207                         if (err)
6208                                 goto out_free;
6209                 }
6210         }
6211
6212         request->interval = interval;
6213         request->scan_start = jiffies;
6214
6215         return request;
6216
6217 out_free:
6218         kfree(request);
6219         return ERR_PTR(err);
6220 }
6221
6222 static int nl80211_start_sched_scan(struct sk_buff *skb,
6223                                     struct genl_info *info)
6224 {
6225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6226         struct net_device *dev = info->user_ptr[1];
6227         struct wireless_dev *wdev = dev->ieee80211_ptr;
6228         struct cfg80211_sched_scan_request *sched_scan_req;
6229         int err;
6230
6231         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6232             !rdev->ops->sched_scan_start)
6233                 return -EOPNOTSUPP;
6234
6235         if (rdev->sched_scan_req)
6236                 return -EINPROGRESS;
6237
6238         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6239                                                   info->attrs);
6240
6241         err = PTR_ERR_OR_ZERO(sched_scan_req);
6242         if (err)
6243                 goto out_err;
6244
6245         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6246         if (err)
6247                 goto out_free;
6248
6249         sched_scan_req->dev = dev;
6250         sched_scan_req->wiphy = &rdev->wiphy;
6251
6252         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6253                 sched_scan_req->owner_nlportid = info->snd_portid;
6254
6255         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6256
6257         nl80211_send_sched_scan(rdev, dev,
6258                                 NL80211_CMD_START_SCHED_SCAN);
6259         return 0;
6260
6261 out_free:
6262         kfree(sched_scan_req);
6263 out_err:
6264         return err;
6265 }
6266
6267 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6268                                    struct genl_info *info)
6269 {
6270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6271
6272         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6273             !rdev->ops->sched_scan_stop)
6274                 return -EOPNOTSUPP;
6275
6276         return __cfg80211_stop_sched_scan(rdev, false);
6277 }
6278
6279 static int nl80211_start_radar_detection(struct sk_buff *skb,
6280                                          struct genl_info *info)
6281 {
6282         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6283         struct net_device *dev = info->user_ptr[1];
6284         struct wireless_dev *wdev = dev->ieee80211_ptr;
6285         struct cfg80211_chan_def chandef;
6286         enum nl80211_dfs_regions dfs_region;
6287         unsigned int cac_time_ms;
6288         int err;
6289
6290         dfs_region = reg_get_dfs_region(wdev->wiphy);
6291         if (dfs_region == NL80211_DFS_UNSET)
6292                 return -EINVAL;
6293
6294         err = nl80211_parse_chandef(rdev, info, &chandef);
6295         if (err)
6296                 return err;
6297
6298         if (netif_carrier_ok(dev))
6299                 return -EBUSY;
6300
6301         if (wdev->cac_started)
6302                 return -EBUSY;
6303
6304         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6305                                             wdev->iftype);
6306         if (err < 0)
6307                 return err;
6308
6309         if (err == 0)
6310                 return -EINVAL;
6311
6312         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6313                 return -EINVAL;
6314
6315         if (!rdev->ops->start_radar_detection)
6316                 return -EOPNOTSUPP;
6317
6318         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6319         if (WARN_ON(!cac_time_ms))
6320                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6321
6322         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6323                                                cac_time_ms);
6324         if (!err) {
6325                 wdev->chandef = chandef;
6326                 wdev->cac_started = true;
6327                 wdev->cac_start_time = jiffies;
6328                 wdev->cac_time_ms = cac_time_ms;
6329         }
6330         return err;
6331 }
6332
6333 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6334 {
6335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6336         struct net_device *dev = info->user_ptr[1];
6337         struct wireless_dev *wdev = dev->ieee80211_ptr;
6338         struct cfg80211_csa_settings params;
6339         /* csa_attrs is defined static to avoid waste of stack size - this
6340          * function is called under RTNL lock, so this should not be a problem.
6341          */
6342         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6343         int err;
6344         bool need_new_beacon = false;
6345         int len, i;
6346         u32 cs_count;
6347
6348         if (!rdev->ops->channel_switch ||
6349             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6350                 return -EOPNOTSUPP;
6351
6352         switch (dev->ieee80211_ptr->iftype) {
6353         case NL80211_IFTYPE_AP:
6354         case NL80211_IFTYPE_P2P_GO:
6355                 need_new_beacon = true;
6356
6357                 /* useless if AP is not running */
6358                 if (!wdev->beacon_interval)
6359                         return -ENOTCONN;
6360                 break;
6361         case NL80211_IFTYPE_ADHOC:
6362                 if (!wdev->ssid_len)
6363                         return -ENOTCONN;
6364                 break;
6365         case NL80211_IFTYPE_MESH_POINT:
6366                 if (!wdev->mesh_id_len)
6367                         return -ENOTCONN;
6368                 break;
6369         default:
6370                 return -EOPNOTSUPP;
6371         }
6372
6373         memset(&params, 0, sizeof(params));
6374
6375         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6376             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6377                 return -EINVAL;
6378
6379         /* only important for AP, IBSS and mesh create IEs internally */
6380         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6381                 return -EINVAL;
6382
6383         /* Even though the attribute is u32, the specification says
6384          * u8, so let's make sure we don't overflow.
6385          */
6386         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6387         if (cs_count > 255)
6388                 return -EINVAL;
6389
6390         params.count = cs_count;
6391
6392         if (!need_new_beacon)
6393                 goto skip_beacons;
6394
6395         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6396         if (err)
6397                 return err;
6398
6399         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6400                                info->attrs[NL80211_ATTR_CSA_IES],
6401                                nl80211_policy);
6402         if (err)
6403                 return err;
6404
6405         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6406         if (err)
6407                 return err;
6408
6409         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6410                 return -EINVAL;
6411
6412         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6413         if (!len || (len % sizeof(u16)))
6414                 return -EINVAL;
6415
6416         params.n_counter_offsets_beacon = len / sizeof(u16);
6417         if (rdev->wiphy.max_num_csa_counters &&
6418             (params.n_counter_offsets_beacon >
6419              rdev->wiphy.max_num_csa_counters))
6420                 return -EINVAL;
6421
6422         params.counter_offsets_beacon =
6423                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6424
6425         /* sanity checks - counters should fit and be the same */
6426         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6427                 u16 offset = params.counter_offsets_beacon[i];
6428
6429                 if (offset >= params.beacon_csa.tail_len)
6430                         return -EINVAL;
6431
6432                 if (params.beacon_csa.tail[offset] != params.count)
6433                         return -EINVAL;
6434         }
6435
6436         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6437                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6438                 if (!len || (len % sizeof(u16)))
6439                         return -EINVAL;
6440
6441                 params.n_counter_offsets_presp = len / sizeof(u16);
6442                 if (rdev->wiphy.max_num_csa_counters &&
6443                     (params.n_counter_offsets_beacon >
6444                      rdev->wiphy.max_num_csa_counters))
6445                         return -EINVAL;
6446
6447                 params.counter_offsets_presp =
6448                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6449
6450                 /* sanity checks - counters should fit and be the same */
6451                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6452                         u16 offset = params.counter_offsets_presp[i];
6453
6454                         if (offset >= params.beacon_csa.probe_resp_len)
6455                                 return -EINVAL;
6456
6457                         if (params.beacon_csa.probe_resp[offset] !=
6458                             params.count)
6459                                 return -EINVAL;
6460                 }
6461         }
6462
6463 skip_beacons:
6464         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6465         if (err)
6466                 return err;
6467
6468         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6469                                      wdev->iftype))
6470                 return -EINVAL;
6471
6472         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6473                                             &params.chandef,
6474                                             wdev->iftype);
6475         if (err < 0)
6476                 return err;
6477
6478         if (err > 0)
6479                 params.radar_required = true;
6480
6481         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6482                 params.block_tx = true;
6483
6484         wdev_lock(wdev);
6485         err = rdev_channel_switch(rdev, dev, &params);
6486         wdev_unlock(wdev);
6487
6488         return err;
6489 }
6490
6491 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6492                             u32 seq, int flags,
6493                             struct cfg80211_registered_device *rdev,
6494                             struct wireless_dev *wdev,
6495                             struct cfg80211_internal_bss *intbss)
6496 {
6497         struct cfg80211_bss *res = &intbss->pub;
6498         const struct cfg80211_bss_ies *ies;
6499         void *hdr;
6500         struct nlattr *bss;
6501
6502         ASSERT_WDEV_LOCK(wdev);
6503
6504         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6505                              NL80211_CMD_NEW_SCAN_RESULTS);
6506         if (!hdr)
6507                 return -1;
6508
6509         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6510
6511         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6512                 goto nla_put_failure;
6513         if (wdev->netdev &&
6514             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6515                 goto nla_put_failure;
6516         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6517                 goto nla_put_failure;
6518
6519         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6520         if (!bss)
6521                 goto nla_put_failure;
6522         if ((!is_zero_ether_addr(res->bssid) &&
6523              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6524                 goto nla_put_failure;
6525
6526         rcu_read_lock();
6527         /* indicate whether we have probe response data or not */
6528         if (rcu_access_pointer(res->proberesp_ies) &&
6529             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6530                 goto fail_unlock_rcu;
6531
6532         /* this pointer prefers to be pointed to probe response data
6533          * but is always valid
6534          */
6535         ies = rcu_dereference(res->ies);
6536         if (ies) {
6537                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6538                         goto fail_unlock_rcu;
6539                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6540                                         ies->len, ies->data))
6541                         goto fail_unlock_rcu;
6542         }
6543
6544         /* and this pointer is always (unless driver didn't know) beacon data */
6545         ies = rcu_dereference(res->beacon_ies);
6546         if (ies && ies->from_beacon) {
6547                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6548                         goto fail_unlock_rcu;
6549                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6550                                         ies->len, ies->data))
6551                         goto fail_unlock_rcu;
6552         }
6553         rcu_read_unlock();
6554
6555         if (res->beacon_interval &&
6556             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6557                 goto nla_put_failure;
6558         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6559             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6560             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6561             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6562                         jiffies_to_msecs(jiffies - intbss->ts)))
6563                 goto nla_put_failure;
6564
6565         switch (rdev->wiphy.signal_type) {
6566         case CFG80211_SIGNAL_TYPE_MBM:
6567                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6568                         goto nla_put_failure;
6569                 break;
6570         case CFG80211_SIGNAL_TYPE_UNSPEC:
6571                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6572                         goto nla_put_failure;
6573                 break;
6574         default:
6575                 break;
6576         }
6577
6578         switch (wdev->iftype) {
6579         case NL80211_IFTYPE_P2P_CLIENT:
6580         case NL80211_IFTYPE_STATION:
6581                 if (intbss == wdev->current_bss &&
6582                     nla_put_u32(msg, NL80211_BSS_STATUS,
6583                                 NL80211_BSS_STATUS_ASSOCIATED))
6584                         goto nla_put_failure;
6585                 break;
6586         case NL80211_IFTYPE_ADHOC:
6587                 if (intbss == wdev->current_bss &&
6588                     nla_put_u32(msg, NL80211_BSS_STATUS,
6589                                 NL80211_BSS_STATUS_IBSS_JOINED))
6590                         goto nla_put_failure;
6591                 break;
6592         default:
6593                 break;
6594         }
6595
6596         nla_nest_end(msg, bss);
6597
6598         genlmsg_end(msg, hdr);
6599         return 0;
6600
6601  fail_unlock_rcu:
6602         rcu_read_unlock();
6603  nla_put_failure:
6604         genlmsg_cancel(msg, hdr);
6605         return -EMSGSIZE;
6606 }
6607
6608 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6609 {
6610         struct cfg80211_registered_device *rdev;
6611         struct cfg80211_internal_bss *scan;
6612         struct wireless_dev *wdev;
6613         int start = cb->args[2], idx = 0;
6614         int err;
6615
6616         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6617         if (err)
6618                 return err;
6619
6620         wdev_lock(wdev);
6621         spin_lock_bh(&rdev->bss_lock);
6622         cfg80211_bss_expire(rdev);
6623
6624         cb->seq = rdev->bss_generation;
6625
6626         list_for_each_entry(scan, &rdev->bss_list, list) {
6627                 if (++idx <= start)
6628                         continue;
6629                 if (nl80211_send_bss(skb, cb,
6630                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6631                                 rdev, wdev, scan) < 0) {
6632                         idx--;
6633                         break;
6634                 }
6635         }
6636
6637         spin_unlock_bh(&rdev->bss_lock);
6638         wdev_unlock(wdev);
6639
6640         cb->args[2] = idx;
6641         nl80211_finish_wdev_dump(rdev);
6642
6643         return skb->len;
6644 }
6645
6646 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6647                                int flags, struct net_device *dev,
6648                                bool allow_radio_stats,
6649                                struct survey_info *survey)
6650 {
6651         void *hdr;
6652         struct nlattr *infoattr;
6653
6654         /* skip radio stats if userspace didn't request them */
6655         if (!survey->channel && !allow_radio_stats)
6656                 return 0;
6657
6658         hdr = nl80211hdr_put(msg, portid, seq, flags,
6659                              NL80211_CMD_NEW_SURVEY_RESULTS);
6660         if (!hdr)
6661                 return -ENOMEM;
6662
6663         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6664                 goto nla_put_failure;
6665
6666         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6667         if (!infoattr)
6668                 goto nla_put_failure;
6669
6670         if (survey->channel &&
6671             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6672                         survey->channel->center_freq))
6673                 goto nla_put_failure;
6674
6675         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6676             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6677                 goto nla_put_failure;
6678         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6679             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6680                 goto nla_put_failure;
6681         if ((survey->filled & SURVEY_INFO_TIME) &&
6682             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6683                         survey->time))
6684                 goto nla_put_failure;
6685         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6686             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6687                         survey->time_busy))
6688                 goto nla_put_failure;
6689         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6690             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6691                         survey->time_ext_busy))
6692                 goto nla_put_failure;
6693         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6694             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6695                         survey->time_rx))
6696                 goto nla_put_failure;
6697         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6698             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6699                         survey->time_tx))
6700                 goto nla_put_failure;
6701         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6702             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6703                         survey->time_scan))
6704                 goto nla_put_failure;
6705
6706         nla_nest_end(msg, infoattr);
6707
6708         genlmsg_end(msg, hdr);
6709         return 0;
6710
6711  nla_put_failure:
6712         genlmsg_cancel(msg, hdr);
6713         return -EMSGSIZE;
6714 }
6715
6716 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6717 {
6718         struct survey_info survey;
6719         struct cfg80211_registered_device *rdev;
6720         struct wireless_dev *wdev;
6721         int survey_idx = cb->args[2];
6722         int res;
6723         bool radio_stats;
6724
6725         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6726         if (res)
6727                 return res;
6728
6729         /* prepare_wdev_dump parsed the attributes */
6730         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6731
6732         if (!wdev->netdev) {
6733                 res = -EINVAL;
6734                 goto out_err;
6735         }
6736
6737         if (!rdev->ops->dump_survey) {
6738                 res = -EOPNOTSUPP;
6739                 goto out_err;
6740         }
6741
6742         while (1) {
6743                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6744                 if (res == -ENOENT)
6745                         break;
6746                 if (res)
6747                         goto out_err;
6748
6749                 /* don't send disabled channels, but do send non-channel data */
6750                 if (survey.channel &&
6751                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6752                         survey_idx++;
6753                         continue;
6754                 }
6755
6756                 if (nl80211_send_survey(skb,
6757                                 NETLINK_CB(cb->skb).portid,
6758                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6759                                 wdev->netdev, radio_stats, &survey) < 0)
6760                         goto out;
6761                 survey_idx++;
6762         }
6763
6764  out:
6765         cb->args[2] = survey_idx;
6766         res = skb->len;
6767  out_err:
6768         nl80211_finish_wdev_dump(rdev);
6769         return res;
6770 }
6771
6772 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6773 {
6774         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6775                                   NL80211_WPA_VERSION_2));
6776 }
6777
6778 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6779 {
6780         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6781         struct net_device *dev = info->user_ptr[1];
6782         struct ieee80211_channel *chan;
6783         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6784         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6785         enum nl80211_auth_type auth_type;
6786         struct key_parse key;
6787         bool local_state_change;
6788
6789         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6790                 return -EINVAL;
6791
6792         if (!info->attrs[NL80211_ATTR_MAC])
6793                 return -EINVAL;
6794
6795         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6796                 return -EINVAL;
6797
6798         if (!info->attrs[NL80211_ATTR_SSID])
6799                 return -EINVAL;
6800
6801         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6802                 return -EINVAL;
6803
6804         err = nl80211_parse_key(info, &key);
6805         if (err)
6806                 return err;
6807
6808         if (key.idx >= 0) {
6809                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6810                         return -EINVAL;
6811                 if (!key.p.key || !key.p.key_len)
6812                         return -EINVAL;
6813                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6814                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6815                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6816                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6817                         return -EINVAL;
6818                 if (key.idx > 4)
6819                         return -EINVAL;
6820         } else {
6821                 key.p.key_len = 0;
6822                 key.p.key = NULL;
6823         }
6824
6825         if (key.idx >= 0) {
6826                 int i;
6827                 bool ok = false;
6828                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6829                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6830                                 ok = true;
6831                                 break;
6832                         }
6833                 }
6834                 if (!ok)
6835                         return -EINVAL;
6836         }
6837
6838         if (!rdev->ops->auth)
6839                 return -EOPNOTSUPP;
6840
6841         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6842             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6843                 return -EOPNOTSUPP;
6844
6845         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6846         chan = nl80211_get_valid_chan(&rdev->wiphy,
6847                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6848         if (!chan)
6849                 return -EINVAL;
6850
6851         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6852         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6853
6854         if (info->attrs[NL80211_ATTR_IE]) {
6855                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6856                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6857         }
6858
6859         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6860         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6861                 return -EINVAL;
6862
6863         if (auth_type == NL80211_AUTHTYPE_SAE &&
6864             !info->attrs[NL80211_ATTR_SAE_DATA])
6865                 return -EINVAL;
6866
6867         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6868                 if (auth_type != NL80211_AUTHTYPE_SAE)
6869                         return -EINVAL;
6870                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6871                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6872                 /* need to include at least Auth Transaction and Status Code */
6873                 if (sae_data_len < 4)
6874                         return -EINVAL;
6875         }
6876
6877         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6878
6879         /*
6880          * Since we no longer track auth state, ignore
6881          * requests to only change local state.
6882          */
6883         if (local_state_change)
6884                 return 0;
6885
6886         wdev_lock(dev->ieee80211_ptr);
6887         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6888                                  ssid, ssid_len, ie, ie_len,
6889                                  key.p.key, key.p.key_len, key.idx,
6890                                  sae_data, sae_data_len);
6891         wdev_unlock(dev->ieee80211_ptr);
6892         return err;
6893 }
6894
6895 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6896                                    struct genl_info *info,
6897                                    struct cfg80211_crypto_settings *settings,
6898                                    int cipher_limit)
6899 {
6900         memset(settings, 0, sizeof(*settings));
6901
6902         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6903
6904         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6905                 u16 proto;
6906                 proto = nla_get_u16(
6907                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6908                 settings->control_port_ethertype = cpu_to_be16(proto);
6909                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6910                     proto != ETH_P_PAE)
6911                         return -EINVAL;
6912                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6913                         settings->control_port_no_encrypt = true;
6914         } else
6915                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6916
6917         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6918                 void *data;
6919                 int len, i;
6920
6921                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6922                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6923                 settings->n_ciphers_pairwise = len / sizeof(u32);
6924
6925                 if (len % sizeof(u32))
6926                         return -EINVAL;
6927
6928                 if (settings->n_ciphers_pairwise > cipher_limit)
6929                         return -EINVAL;
6930
6931                 memcpy(settings->ciphers_pairwise, data, len);
6932
6933                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6934                         if (!cfg80211_supported_cipher_suite(
6935                                         &rdev->wiphy,
6936                                         settings->ciphers_pairwise[i]))
6937                                 return -EINVAL;
6938         }
6939
6940         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6941                 settings->cipher_group =
6942                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6943                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6944                                                      settings->cipher_group))
6945                         return -EINVAL;
6946         }
6947
6948         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6949                 settings->wpa_versions =
6950                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6951                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6952                         return -EINVAL;
6953         }
6954
6955         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6956                 void *data;
6957                 int len;
6958
6959                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6960                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6961                 settings->n_akm_suites = len / sizeof(u32);
6962
6963                 if (len % sizeof(u32))
6964                         return -EINVAL;
6965
6966                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6967                         return -EINVAL;
6968
6969                 memcpy(settings->akm_suites, data, len);
6970         }
6971
6972         return 0;
6973 }
6974
6975 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6976 {
6977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6978         struct net_device *dev = info->user_ptr[1];
6979         struct ieee80211_channel *chan;
6980         struct cfg80211_assoc_request req = {};
6981         const u8 *bssid, *ssid;
6982         int err, ssid_len = 0;
6983
6984         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6985                 return -EINVAL;
6986
6987         if (!info->attrs[NL80211_ATTR_MAC] ||
6988             !info->attrs[NL80211_ATTR_SSID] ||
6989             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6990                 return -EINVAL;
6991
6992         if (!rdev->ops->assoc)
6993                 return -EOPNOTSUPP;
6994
6995         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6996             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6997                 return -EOPNOTSUPP;
6998
6999         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7000
7001         chan = nl80211_get_valid_chan(&rdev->wiphy,
7002                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7003         if (!chan)
7004                 return -EINVAL;
7005
7006         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7007         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7008
7009         if (info->attrs[NL80211_ATTR_IE]) {
7010                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7011                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7012         }
7013
7014         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7015                 enum nl80211_mfp mfp =
7016                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7017                 if (mfp == NL80211_MFP_REQUIRED)
7018                         req.use_mfp = true;
7019                 else if (mfp != NL80211_MFP_NO)
7020                         return -EINVAL;
7021         }
7022
7023         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7024                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7025
7026         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7027                 req.flags |= ASSOC_REQ_DISABLE_HT;
7028
7029         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7030                 memcpy(&req.ht_capa_mask,
7031                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7032                        sizeof(req.ht_capa_mask));
7033
7034         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7035                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7036                         return -EINVAL;
7037                 memcpy(&req.ht_capa,
7038                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7039                        sizeof(req.ht_capa));
7040         }
7041
7042         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7043                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7044
7045         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7046                 memcpy(&req.vht_capa_mask,
7047                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7048                        sizeof(req.vht_capa_mask));
7049
7050         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7051                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7052                         return -EINVAL;
7053                 memcpy(&req.vht_capa,
7054                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7055                        sizeof(req.vht_capa));
7056         }
7057
7058         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7059                 if (!(rdev->wiphy.features &
7060                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7061                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7062                         return -EINVAL;
7063                 req.flags |= ASSOC_REQ_USE_RRM;
7064         }
7065
7066         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7067         if (!err) {
7068                 wdev_lock(dev->ieee80211_ptr);
7069                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7070                                           ssid, ssid_len, &req);
7071                 wdev_unlock(dev->ieee80211_ptr);
7072         }
7073
7074         return err;
7075 }
7076
7077 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7078 {
7079         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7080         struct net_device *dev = info->user_ptr[1];
7081         const u8 *ie = NULL, *bssid;
7082         int ie_len = 0, err;
7083         u16 reason_code;
7084         bool local_state_change;
7085
7086         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7087                 return -EINVAL;
7088
7089         if (!info->attrs[NL80211_ATTR_MAC])
7090                 return -EINVAL;
7091
7092         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7093                 return -EINVAL;
7094
7095         if (!rdev->ops->deauth)
7096                 return -EOPNOTSUPP;
7097
7098         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7099             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7100                 return -EOPNOTSUPP;
7101
7102         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7103
7104         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7105         if (reason_code == 0) {
7106                 /* Reason Code 0 is reserved */
7107                 return -EINVAL;
7108         }
7109
7110         if (info->attrs[NL80211_ATTR_IE]) {
7111                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7112                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7113         }
7114
7115         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7116
7117         wdev_lock(dev->ieee80211_ptr);
7118         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7119                                    local_state_change);
7120         wdev_unlock(dev->ieee80211_ptr);
7121         return err;
7122 }
7123
7124 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7125 {
7126         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7127         struct net_device *dev = info->user_ptr[1];
7128         const u8 *ie = NULL, *bssid;
7129         int ie_len = 0, err;
7130         u16 reason_code;
7131         bool local_state_change;
7132
7133         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7134                 return -EINVAL;
7135
7136         if (!info->attrs[NL80211_ATTR_MAC])
7137                 return -EINVAL;
7138
7139         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7140                 return -EINVAL;
7141
7142         if (!rdev->ops->disassoc)
7143                 return -EOPNOTSUPP;
7144
7145         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7146             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7147                 return -EOPNOTSUPP;
7148
7149         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7150
7151         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7152         if (reason_code == 0) {
7153                 /* Reason Code 0 is reserved */
7154                 return -EINVAL;
7155         }
7156
7157         if (info->attrs[NL80211_ATTR_IE]) {
7158                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7159                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7160         }
7161
7162         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7163
7164         wdev_lock(dev->ieee80211_ptr);
7165         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7166                                      local_state_change);
7167         wdev_unlock(dev->ieee80211_ptr);
7168         return err;
7169 }
7170
7171 static bool
7172 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7173                          int mcast_rate[IEEE80211_NUM_BANDS],
7174                          int rateval)
7175 {
7176         struct wiphy *wiphy = &rdev->wiphy;
7177         bool found = false;
7178         int band, i;
7179
7180         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7181                 struct ieee80211_supported_band *sband;
7182
7183                 sband = wiphy->bands[band];
7184                 if (!sband)
7185                         continue;
7186
7187                 for (i = 0; i < sband->n_bitrates; i++) {
7188                         if (sband->bitrates[i].bitrate == rateval) {
7189                                 mcast_rate[band] = i + 1;
7190                                 found = true;
7191                                 break;
7192                         }
7193                 }
7194         }
7195
7196         return found;
7197 }
7198
7199 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7200 {
7201         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7202         struct net_device *dev = info->user_ptr[1];
7203         struct cfg80211_ibss_params ibss;
7204         struct wiphy *wiphy;
7205         struct cfg80211_cached_keys *connkeys = NULL;
7206         int err;
7207
7208         memset(&ibss, 0, sizeof(ibss));
7209
7210         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7211                 return -EINVAL;
7212
7213         if (!info->attrs[NL80211_ATTR_SSID] ||
7214             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7215                 return -EINVAL;
7216
7217         ibss.beacon_interval = 100;
7218
7219         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7220                 ibss.beacon_interval =
7221                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7222                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7223                         return -EINVAL;
7224         }
7225
7226         if (!rdev->ops->join_ibss)
7227                 return -EOPNOTSUPP;
7228
7229         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7230                 return -EOPNOTSUPP;
7231
7232         wiphy = &rdev->wiphy;
7233
7234         if (info->attrs[NL80211_ATTR_MAC]) {
7235                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7236
7237                 if (!is_valid_ether_addr(ibss.bssid))
7238                         return -EINVAL;
7239         }
7240         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7241         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7242
7243         if (info->attrs[NL80211_ATTR_IE]) {
7244                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7245                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7246         }
7247
7248         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7249         if (err)
7250                 return err;
7251
7252         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7253                                      NL80211_IFTYPE_ADHOC))
7254                 return -EINVAL;
7255
7256         switch (ibss.chandef.width) {
7257         case NL80211_CHAN_WIDTH_5:
7258         case NL80211_CHAN_WIDTH_10:
7259         case NL80211_CHAN_WIDTH_20_NOHT:
7260                 break;
7261         case NL80211_CHAN_WIDTH_20:
7262         case NL80211_CHAN_WIDTH_40:
7263                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7264                         break;
7265         default:
7266                 return -EINVAL;
7267         }
7268
7269         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7270         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7271
7272         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7273                 u8 *rates =
7274                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7275                 int n_rates =
7276                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7277                 struct ieee80211_supported_band *sband =
7278                         wiphy->bands[ibss.chandef.chan->band];
7279
7280                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7281                                              &ibss.basic_rates);
7282                 if (err)
7283                         return err;
7284         }
7285
7286         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7287                 memcpy(&ibss.ht_capa_mask,
7288                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7289                        sizeof(ibss.ht_capa_mask));
7290
7291         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7292                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7293                         return -EINVAL;
7294                 memcpy(&ibss.ht_capa,
7295                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7296                        sizeof(ibss.ht_capa));
7297         }
7298
7299         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7300             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7301                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7302                 return -EINVAL;
7303
7304         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7305                 bool no_ht = false;
7306
7307                 connkeys = nl80211_parse_connkeys(rdev,
7308                                           info->attrs[NL80211_ATTR_KEYS],
7309                                           &no_ht);
7310                 if (IS_ERR(connkeys))
7311                         return PTR_ERR(connkeys);
7312
7313                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7314                     no_ht) {
7315                         kfree(connkeys);
7316                         return -EINVAL;
7317                 }
7318         }
7319
7320         ibss.control_port =
7321                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7322
7323         ibss.userspace_handles_dfs =
7324                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7325
7326         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7327         if (err)
7328                 kzfree(connkeys);
7329         return err;
7330 }
7331
7332 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7333 {
7334         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7335         struct net_device *dev = info->user_ptr[1];
7336
7337         if (!rdev->ops->leave_ibss)
7338                 return -EOPNOTSUPP;
7339
7340         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7341                 return -EOPNOTSUPP;
7342
7343         return cfg80211_leave_ibss(rdev, dev, false);
7344 }
7345
7346 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7347 {
7348         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7349         struct net_device *dev = info->user_ptr[1];
7350         int mcast_rate[IEEE80211_NUM_BANDS];
7351         u32 nla_rate;
7352         int err;
7353
7354         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7355             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7356                 return -EOPNOTSUPP;
7357
7358         if (!rdev->ops->set_mcast_rate)
7359                 return -EOPNOTSUPP;
7360
7361         memset(mcast_rate, 0, sizeof(mcast_rate));
7362
7363         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7364                 return -EINVAL;
7365
7366         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7367         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7368                 return -EINVAL;
7369
7370         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7371
7372         return err;
7373 }
7374
7375 static struct sk_buff *
7376 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7377                             int approxlen, u32 portid, u32 seq,
7378                             enum nl80211_commands cmd,
7379                             enum nl80211_attrs attr,
7380                             const struct nl80211_vendor_cmd_info *info,
7381                             gfp_t gfp)
7382 {
7383         struct sk_buff *skb;
7384         void *hdr;
7385         struct nlattr *data;
7386
7387         skb = nlmsg_new(approxlen + 100, gfp);
7388         if (!skb)
7389                 return NULL;
7390
7391         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7392         if (!hdr) {
7393                 kfree_skb(skb);
7394                 return NULL;
7395         }
7396
7397         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7398                 goto nla_put_failure;
7399
7400         if (info) {
7401                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7402                                 info->vendor_id))
7403                         goto nla_put_failure;
7404                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7405                                 info->subcmd))
7406                         goto nla_put_failure;
7407         }
7408
7409         data = nla_nest_start(skb, attr);
7410
7411         ((void **)skb->cb)[0] = rdev;
7412         ((void **)skb->cb)[1] = hdr;
7413         ((void **)skb->cb)[2] = data;
7414
7415         return skb;
7416
7417  nla_put_failure:
7418         kfree_skb(skb);
7419         return NULL;
7420 }
7421
7422 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7423                                            enum nl80211_commands cmd,
7424                                            enum nl80211_attrs attr,
7425                                            int vendor_event_idx,
7426                                            int approxlen, gfp_t gfp)
7427 {
7428         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7429         const struct nl80211_vendor_cmd_info *info;
7430
7431         switch (cmd) {
7432         case NL80211_CMD_TESTMODE:
7433                 if (WARN_ON(vendor_event_idx != -1))
7434                         return NULL;
7435                 info = NULL;
7436                 break;
7437         case NL80211_CMD_VENDOR:
7438                 if (WARN_ON(vendor_event_idx < 0 ||
7439                             vendor_event_idx >= wiphy->n_vendor_events))
7440                         return NULL;
7441                 info = &wiphy->vendor_events[vendor_event_idx];
7442                 break;
7443         default:
7444                 WARN_ON(1);
7445                 return NULL;
7446         }
7447
7448         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7449                                            cmd, attr, info, gfp);
7450 }
7451 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7452
7453 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7454 {
7455         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7456         void *hdr = ((void **)skb->cb)[1];
7457         struct nlattr *data = ((void **)skb->cb)[2];
7458         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7459
7460         /* clear CB data for netlink core to own from now on */
7461         memset(skb->cb, 0, sizeof(skb->cb));
7462
7463         nla_nest_end(skb, data);
7464         genlmsg_end(skb, hdr);
7465
7466         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7467                 mcgrp = NL80211_MCGRP_VENDOR;
7468
7469         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7470                                 mcgrp, gfp);
7471 }
7472 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7473
7474 #ifdef CONFIG_NL80211_TESTMODE
7475 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7476 {
7477         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7478         struct wireless_dev *wdev =
7479                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7480         int err;
7481
7482         if (!rdev->ops->testmode_cmd)
7483                 return -EOPNOTSUPP;
7484
7485         if (IS_ERR(wdev)) {
7486                 err = PTR_ERR(wdev);
7487                 if (err != -EINVAL)
7488                         return err;
7489                 wdev = NULL;
7490         } else if (wdev->wiphy != &rdev->wiphy) {
7491                 return -EINVAL;
7492         }
7493
7494         if (!info->attrs[NL80211_ATTR_TESTDATA])
7495                 return -EINVAL;
7496
7497         rdev->cur_cmd_info = info;
7498         err = rdev_testmode_cmd(rdev, wdev,
7499                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7500                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7501         rdev->cur_cmd_info = NULL;
7502
7503         return err;
7504 }
7505
7506 static int nl80211_testmode_dump(struct sk_buff *skb,
7507                                  struct netlink_callback *cb)
7508 {
7509         struct cfg80211_registered_device *rdev;
7510         int err;
7511         long phy_idx;
7512         void *data = NULL;
7513         int data_len = 0;
7514
7515         rtnl_lock();
7516
7517         if (cb->args[0]) {
7518                 /*
7519                  * 0 is a valid index, but not valid for args[0],
7520                  * so we need to offset by 1.
7521                  */
7522                 phy_idx = cb->args[0] - 1;
7523         } else {
7524                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7525                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7526                                   nl80211_policy);
7527                 if (err)
7528                         goto out_err;
7529
7530                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7531                                                   nl80211_fam.attrbuf);
7532                 if (IS_ERR(rdev)) {
7533                         err = PTR_ERR(rdev);
7534                         goto out_err;
7535                 }
7536                 phy_idx = rdev->wiphy_idx;
7537                 rdev = NULL;
7538
7539                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7540                         cb->args[1] =
7541                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7542         }
7543
7544         if (cb->args[1]) {
7545                 data = nla_data((void *)cb->args[1]);
7546                 data_len = nla_len((void *)cb->args[1]);
7547         }
7548
7549         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7550         if (!rdev) {
7551                 err = -ENOENT;
7552                 goto out_err;
7553         }
7554
7555         if (!rdev->ops->testmode_dump) {
7556                 err = -EOPNOTSUPP;
7557                 goto out_err;
7558         }
7559
7560         while (1) {
7561                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7562                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7563                                            NL80211_CMD_TESTMODE);
7564                 struct nlattr *tmdata;
7565
7566                 if (!hdr)
7567                         break;
7568
7569                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7570                         genlmsg_cancel(skb, hdr);
7571                         break;
7572                 }
7573
7574                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7575                 if (!tmdata) {
7576                         genlmsg_cancel(skb, hdr);
7577                         break;
7578                 }
7579                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7580                 nla_nest_end(skb, tmdata);
7581
7582                 if (err == -ENOBUFS || err == -ENOENT) {
7583                         genlmsg_cancel(skb, hdr);
7584                         break;
7585                 } else if (err) {
7586                         genlmsg_cancel(skb, hdr);
7587                         goto out_err;
7588                 }
7589
7590                 genlmsg_end(skb, hdr);
7591         }
7592
7593         err = skb->len;
7594         /* see above */
7595         cb->args[0] = phy_idx + 1;
7596  out_err:
7597         rtnl_unlock();
7598         return err;
7599 }
7600 #endif
7601
7602 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7603 {
7604         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7605         struct net_device *dev = info->user_ptr[1];
7606         struct cfg80211_connect_params connect;
7607         struct wiphy *wiphy;
7608         struct cfg80211_cached_keys *connkeys = NULL;
7609         int err;
7610
7611         memset(&connect, 0, sizeof(connect));
7612
7613         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7614                 return -EINVAL;
7615
7616         if (!info->attrs[NL80211_ATTR_SSID] ||
7617             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7618                 return -EINVAL;
7619
7620         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7621                 connect.auth_type =
7622                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7623                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7624                                              NL80211_CMD_CONNECT))
7625                         return -EINVAL;
7626         } else
7627                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7628
7629         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7630
7631         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7632                                       NL80211_MAX_NR_CIPHER_SUITES);
7633         if (err)
7634                 return err;
7635
7636         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7637             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7638                 return -EOPNOTSUPP;
7639
7640         wiphy = &rdev->wiphy;
7641
7642         connect.bg_scan_period = -1;
7643         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7644                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7645                 connect.bg_scan_period =
7646                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7647         }
7648
7649         if (info->attrs[NL80211_ATTR_MAC])
7650                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7651         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7652                 connect.bssid_hint =
7653                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7654         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7655         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7656
7657         if (info->attrs[NL80211_ATTR_IE]) {
7658                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7659                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7660         }
7661
7662         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7663                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7664                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7665                     connect.mfp != NL80211_MFP_NO)
7666                         return -EINVAL;
7667         } else {
7668                 connect.mfp = NL80211_MFP_NO;
7669         }
7670
7671         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7672                 connect.channel = nl80211_get_valid_chan(
7673                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7674                 if (!connect.channel)
7675                         return -EINVAL;
7676         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7677                 connect.channel_hint = nl80211_get_valid_chan(
7678                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7679                 if (!connect.channel_hint)
7680                         return -EINVAL;
7681         }
7682
7683         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7684                 connkeys = nl80211_parse_connkeys(rdev,
7685                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7686                 if (IS_ERR(connkeys))
7687                         return PTR_ERR(connkeys);
7688         }
7689
7690         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7691                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7692
7693         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7694                 memcpy(&connect.ht_capa_mask,
7695                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7696                        sizeof(connect.ht_capa_mask));
7697
7698         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7699                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7700                         kzfree(connkeys);
7701                         return -EINVAL;
7702                 }
7703                 memcpy(&connect.ht_capa,
7704                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7705                        sizeof(connect.ht_capa));
7706         }
7707
7708         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7709                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7710
7711         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7712                 memcpy(&connect.vht_capa_mask,
7713                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7714                        sizeof(connect.vht_capa_mask));
7715
7716         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7717                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7718                         kzfree(connkeys);
7719                         return -EINVAL;
7720                 }
7721                 memcpy(&connect.vht_capa,
7722                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7723                        sizeof(connect.vht_capa));
7724         }
7725
7726         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7727                 if (!(rdev->wiphy.features &
7728                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7729                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7730                         return -EINVAL;
7731                 connect.flags |= ASSOC_REQ_USE_RRM;
7732         }
7733
7734         wdev_lock(dev->ieee80211_ptr);
7735         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7736         wdev_unlock(dev->ieee80211_ptr);
7737         if (err)
7738                 kzfree(connkeys);
7739         return err;
7740 }
7741
7742 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7743 {
7744         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7745         struct net_device *dev = info->user_ptr[1];
7746         u16 reason;
7747         int ret;
7748
7749         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7750                 reason = WLAN_REASON_DEAUTH_LEAVING;
7751         else
7752                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7753
7754         if (reason == 0)
7755                 return -EINVAL;
7756
7757         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7758             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7759                 return -EOPNOTSUPP;
7760
7761         wdev_lock(dev->ieee80211_ptr);
7762         ret = cfg80211_disconnect(rdev, dev, reason, true);
7763         wdev_unlock(dev->ieee80211_ptr);
7764         return ret;
7765 }
7766
7767 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7768 {
7769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7770         struct net *net;
7771         int err;
7772         u32 pid;
7773
7774         if (!info->attrs[NL80211_ATTR_PID])
7775                 return -EINVAL;
7776
7777         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7778
7779         net = get_net_ns_by_pid(pid);
7780         if (IS_ERR(net))
7781                 return PTR_ERR(net);
7782
7783         err = 0;
7784
7785         /* check if anything to do */
7786         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7787                 err = cfg80211_switch_netns(rdev, net);
7788
7789         put_net(net);
7790         return err;
7791 }
7792
7793 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7794 {
7795         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7796         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7797                         struct cfg80211_pmksa *pmksa) = NULL;
7798         struct net_device *dev = info->user_ptr[1];
7799         struct cfg80211_pmksa pmksa;
7800
7801         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7802
7803         if (!info->attrs[NL80211_ATTR_MAC])
7804                 return -EINVAL;
7805
7806         if (!info->attrs[NL80211_ATTR_PMKID])
7807                 return -EINVAL;
7808
7809         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7810         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7811
7812         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7813             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7814                 return -EOPNOTSUPP;
7815
7816         switch (info->genlhdr->cmd) {
7817         case NL80211_CMD_SET_PMKSA:
7818                 rdev_ops = rdev->ops->set_pmksa;
7819                 break;
7820         case NL80211_CMD_DEL_PMKSA:
7821                 rdev_ops = rdev->ops->del_pmksa;
7822                 break;
7823         default:
7824                 WARN_ON(1);
7825                 break;
7826         }
7827
7828         if (!rdev_ops)
7829                 return -EOPNOTSUPP;
7830
7831         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7832 }
7833
7834 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7835 {
7836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7837         struct net_device *dev = info->user_ptr[1];
7838
7839         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7840             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7841                 return -EOPNOTSUPP;
7842
7843         if (!rdev->ops->flush_pmksa)
7844                 return -EOPNOTSUPP;
7845
7846         return rdev_flush_pmksa(rdev, dev);
7847 }
7848
7849 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7850 {
7851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7852         struct net_device *dev = info->user_ptr[1];
7853         u8 action_code, dialog_token;
7854         u32 peer_capability = 0;
7855         u16 status_code;
7856         u8 *peer;
7857         bool initiator;
7858
7859         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7860             !rdev->ops->tdls_mgmt)
7861                 return -EOPNOTSUPP;
7862
7863         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7864             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7865             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7866             !info->attrs[NL80211_ATTR_IE] ||
7867             !info->attrs[NL80211_ATTR_MAC])
7868                 return -EINVAL;
7869
7870         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7871         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7872         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7873         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7874         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7875         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7876                 peer_capability =
7877                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7878
7879         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7880                               dialog_token, status_code, peer_capability,
7881                               initiator,
7882                               nla_data(info->attrs[NL80211_ATTR_IE]),
7883                               nla_len(info->attrs[NL80211_ATTR_IE]));
7884 }
7885
7886 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7887 {
7888         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7889         struct net_device *dev = info->user_ptr[1];
7890         enum nl80211_tdls_operation operation;
7891         u8 *peer;
7892
7893         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7894             !rdev->ops->tdls_oper)
7895                 return -EOPNOTSUPP;
7896
7897         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7898             !info->attrs[NL80211_ATTR_MAC])
7899                 return -EINVAL;
7900
7901         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7902         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7903
7904         return rdev_tdls_oper(rdev, dev, peer, operation);
7905 }
7906
7907 static int nl80211_remain_on_channel(struct sk_buff *skb,
7908                                      struct genl_info *info)
7909 {
7910         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7911         struct wireless_dev *wdev = info->user_ptr[1];
7912         struct cfg80211_chan_def chandef;
7913         struct sk_buff *msg;
7914         void *hdr;
7915         u64 cookie;
7916         u32 duration;
7917         int err;
7918
7919         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7920             !info->attrs[NL80211_ATTR_DURATION])
7921                 return -EINVAL;
7922
7923         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7924
7925         if (!rdev->ops->remain_on_channel ||
7926             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7927                 return -EOPNOTSUPP;
7928
7929         /*
7930          * We should be on that channel for at least a minimum amount of
7931          * time (10ms) but no longer than the driver supports.
7932          */
7933         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7934             duration > rdev->wiphy.max_remain_on_channel_duration)
7935                 return -EINVAL;
7936
7937         err = nl80211_parse_chandef(rdev, info, &chandef);
7938         if (err)
7939                 return err;
7940
7941         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7942         if (!msg)
7943                 return -ENOMEM;
7944
7945         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7946                              NL80211_CMD_REMAIN_ON_CHANNEL);
7947         if (!hdr) {
7948                 err = -ENOBUFS;
7949                 goto free_msg;
7950         }
7951
7952         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7953                                      duration, &cookie);
7954
7955         if (err)
7956                 goto free_msg;
7957
7958         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7959                 goto nla_put_failure;
7960
7961         genlmsg_end(msg, hdr);
7962
7963         return genlmsg_reply(msg, info);
7964
7965  nla_put_failure:
7966         err = -ENOBUFS;
7967  free_msg:
7968         nlmsg_free(msg);
7969         return err;
7970 }
7971
7972 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7973                                             struct genl_info *info)
7974 {
7975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7976         struct wireless_dev *wdev = info->user_ptr[1];
7977         u64 cookie;
7978
7979         if (!info->attrs[NL80211_ATTR_COOKIE])
7980                 return -EINVAL;
7981
7982         if (!rdev->ops->cancel_remain_on_channel)
7983                 return -EOPNOTSUPP;
7984
7985         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7986
7987         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7988 }
7989
7990 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7991                            u8 *rates, u8 rates_len)
7992 {
7993         u8 i;
7994         u32 mask = 0;
7995
7996         for (i = 0; i < rates_len; i++) {
7997                 int rate = (rates[i] & 0x7f) * 5;
7998                 int ridx;
7999                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8000                         struct ieee80211_rate *srate =
8001                                 &sband->bitrates[ridx];
8002                         if (rate == srate->bitrate) {
8003                                 mask |= 1 << ridx;
8004                                 break;
8005                         }
8006                 }
8007                 if (ridx == sband->n_bitrates)
8008                         return 0; /* rate not found */
8009         }
8010
8011         return mask;
8012 }
8013
8014 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8015                                u8 *rates, u8 rates_len,
8016                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8017 {
8018         u8 i;
8019
8020         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8021
8022         for (i = 0; i < rates_len; i++) {
8023                 int ridx, rbit;
8024
8025                 ridx = rates[i] / 8;
8026                 rbit = BIT(rates[i] % 8);
8027
8028                 /* check validity */
8029                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8030                         return false;
8031
8032                 /* check availability */
8033                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8034                         mcs[ridx] |= rbit;
8035                 else
8036                         return false;
8037         }
8038
8039         return true;
8040 }
8041
8042 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8043 {
8044         u16 mcs_mask = 0;
8045
8046         switch (vht_mcs_map) {
8047         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8048                 break;
8049         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8050                 mcs_mask = 0x00FF;
8051                 break;
8052         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8053                 mcs_mask = 0x01FF;
8054                 break;
8055         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8056                 mcs_mask = 0x03FF;
8057                 break;
8058         default:
8059                 break;
8060         }
8061
8062         return mcs_mask;
8063 }
8064
8065 static void vht_build_mcs_mask(u16 vht_mcs_map,
8066                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8067 {
8068         u8 nss;
8069
8070         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8071                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8072                 vht_mcs_map >>= 2;
8073         }
8074 }
8075
8076 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8077                              struct nl80211_txrate_vht *txrate,
8078                              u16 mcs[NL80211_VHT_NSS_MAX])
8079 {
8080         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8081         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8082         u8 i;
8083
8084         if (!sband->vht_cap.vht_supported)
8085                 return false;
8086
8087         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8088
8089         /* Build vht_mcs_mask from VHT capabilities */
8090         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8091
8092         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8093                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8094                         mcs[i] = txrate->mcs[i];
8095                 else
8096                         return false;
8097         }
8098
8099         return true;
8100 }
8101
8102 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8103         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8104                                     .len = NL80211_MAX_SUPP_RATES },
8105         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8106                                 .len = NL80211_MAX_SUPP_HT_RATES },
8107         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8108         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8109 };
8110
8111 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8112                                        struct genl_info *info)
8113 {
8114         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8115         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8116         struct cfg80211_bitrate_mask mask;
8117         int rem, i;
8118         struct net_device *dev = info->user_ptr[1];
8119         struct nlattr *tx_rates;
8120         struct ieee80211_supported_band *sband;
8121         u16 vht_tx_mcs_map;
8122
8123         if (!rdev->ops->set_bitrate_mask)
8124                 return -EOPNOTSUPP;
8125
8126         memset(&mask, 0, sizeof(mask));
8127         /* Default to all rates enabled */
8128         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8129                 sband = rdev->wiphy.bands[i];
8130
8131                 if (!sband)
8132                         continue;
8133
8134                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8135                 memcpy(mask.control[i].ht_mcs,
8136                        sband->ht_cap.mcs.rx_mask,
8137                        sizeof(mask.control[i].ht_mcs));
8138
8139                 if (!sband->vht_cap.vht_supported)
8140                         continue;
8141
8142                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8143                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8144         }
8145
8146         /* if no rates are given set it back to the defaults */
8147         if (!info->attrs[NL80211_ATTR_TX_RATES])
8148                 goto out;
8149
8150         /*
8151          * The nested attribute uses enum nl80211_band as the index. This maps
8152          * directly to the enum ieee80211_band values used in cfg80211.
8153          */
8154         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8155         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8156                 enum ieee80211_band band = nla_type(tx_rates);
8157                 int err;
8158
8159                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8160                         return -EINVAL;
8161                 sband = rdev->wiphy.bands[band];
8162                 if (sband == NULL)
8163                         return -EINVAL;
8164                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8165                                 nla_len(tx_rates), nl80211_txattr_policy);
8166                 if (err)
8167                         return err;
8168                 if (tb[NL80211_TXRATE_LEGACY]) {
8169                         mask.control[band].legacy = rateset_to_mask(
8170                                 sband,
8171                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8172                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8173                         if ((mask.control[band].legacy == 0) &&
8174                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8175                                 return -EINVAL;
8176                 }
8177                 if (tb[NL80211_TXRATE_HT]) {
8178                         if (!ht_rateset_to_mask(
8179                                         sband,
8180                                         nla_data(tb[NL80211_TXRATE_HT]),
8181                                         nla_len(tb[NL80211_TXRATE_HT]),
8182                                         mask.control[band].ht_mcs))
8183                                 return -EINVAL;
8184                 }
8185                 if (tb[NL80211_TXRATE_VHT]) {
8186                         if (!vht_set_mcs_mask(
8187                                         sband,
8188                                         nla_data(tb[NL80211_TXRATE_VHT]),
8189                                         mask.control[band].vht_mcs))
8190                                 return -EINVAL;
8191                 }
8192                 if (tb[NL80211_TXRATE_GI]) {
8193                         mask.control[band].gi =
8194                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8195                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8196                                 return -EINVAL;
8197                 }
8198
8199                 if (mask.control[band].legacy == 0) {
8200                         /* don't allow empty legacy rates if HT or VHT
8201                          * are not even supported.
8202                          */
8203                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8204                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8205                                 return -EINVAL;
8206
8207                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8208                                 if (mask.control[band].ht_mcs[i])
8209                                         goto out;
8210
8211                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8212                                 if (mask.control[band].vht_mcs[i])
8213                                         goto out;
8214
8215                         /* legacy and mcs rates may not be both empty */
8216                         return -EINVAL;
8217                 }
8218         }
8219
8220 out:
8221         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8222 }
8223
8224 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8225 {
8226         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8227         struct wireless_dev *wdev = info->user_ptr[1];
8228         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8229
8230         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8231                 return -EINVAL;
8232
8233         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8234                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8235
8236         switch (wdev->iftype) {
8237         case NL80211_IFTYPE_STATION:
8238         case NL80211_IFTYPE_ADHOC:
8239         case NL80211_IFTYPE_P2P_CLIENT:
8240         case NL80211_IFTYPE_AP:
8241         case NL80211_IFTYPE_AP_VLAN:
8242         case NL80211_IFTYPE_MESH_POINT:
8243         case NL80211_IFTYPE_P2P_GO:
8244         case NL80211_IFTYPE_P2P_DEVICE:
8245                 break;
8246         default:
8247                 return -EOPNOTSUPP;
8248         }
8249
8250         /* not much point in registering if we can't reply */
8251         if (!rdev->ops->mgmt_tx)
8252                 return -EOPNOTSUPP;
8253
8254         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8255                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8256                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8257 }
8258
8259 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8260 {
8261         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8262         struct wireless_dev *wdev = info->user_ptr[1];
8263         struct cfg80211_chan_def chandef;
8264         int err;
8265         void *hdr = NULL;
8266         u64 cookie;
8267         struct sk_buff *msg = NULL;
8268         struct cfg80211_mgmt_tx_params params = {
8269                 .dont_wait_for_ack =
8270                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8271         };
8272
8273         if (!info->attrs[NL80211_ATTR_FRAME])
8274                 return -EINVAL;
8275
8276         if (!rdev->ops->mgmt_tx)
8277                 return -EOPNOTSUPP;
8278
8279         switch (wdev->iftype) {
8280         case NL80211_IFTYPE_P2P_DEVICE:
8281                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8282                         return -EINVAL;
8283         case NL80211_IFTYPE_STATION:
8284         case NL80211_IFTYPE_ADHOC:
8285         case NL80211_IFTYPE_P2P_CLIENT:
8286         case NL80211_IFTYPE_AP:
8287         case NL80211_IFTYPE_AP_VLAN:
8288         case NL80211_IFTYPE_MESH_POINT:
8289         case NL80211_IFTYPE_P2P_GO:
8290                 break;
8291         default:
8292                 return -EOPNOTSUPP;
8293         }
8294
8295         if (info->attrs[NL80211_ATTR_DURATION]) {
8296                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8297                         return -EINVAL;
8298                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8299
8300                 /*
8301                  * We should wait on the channel for at least a minimum amount
8302                  * of time (10ms) but no longer than the driver supports.
8303                  */
8304                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8305                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8306                         return -EINVAL;
8307
8308         }
8309
8310         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8311
8312         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8313                 return -EINVAL;
8314
8315         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8316
8317         /* get the channel if any has been specified, otherwise pass NULL to
8318          * the driver. The latter will use the current one
8319          */
8320         chandef.chan = NULL;
8321         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8322                 err = nl80211_parse_chandef(rdev, info, &chandef);
8323                 if (err)
8324                         return err;
8325         }
8326
8327         if (!chandef.chan && params.offchan)
8328                 return -EINVAL;
8329
8330         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8331         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8332
8333         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8334                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8335                 int i;
8336
8337                 if (len % sizeof(u16))
8338                         return -EINVAL;
8339
8340                 params.n_csa_offsets = len / sizeof(u16);
8341                 params.csa_offsets =
8342                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8343
8344                 /* check that all the offsets fit the frame */
8345                 for (i = 0; i < params.n_csa_offsets; i++) {
8346                         if (params.csa_offsets[i] >= params.len)
8347                                 return -EINVAL;
8348                 }
8349         }
8350
8351         if (!params.dont_wait_for_ack) {
8352                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8353                 if (!msg)
8354                         return -ENOMEM;
8355
8356                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8357                                      NL80211_CMD_FRAME);
8358                 if (!hdr) {
8359                         err = -ENOBUFS;
8360                         goto free_msg;
8361                 }
8362         }
8363
8364         params.chan = chandef.chan;
8365         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8366         if (err)
8367                 goto free_msg;
8368
8369         if (msg) {
8370                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8371                         goto nla_put_failure;
8372
8373                 genlmsg_end(msg, hdr);
8374                 return genlmsg_reply(msg, info);
8375         }
8376
8377         return 0;
8378
8379  nla_put_failure:
8380         err = -ENOBUFS;
8381  free_msg:
8382         nlmsg_free(msg);
8383         return err;
8384 }
8385
8386 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8387 {
8388         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8389         struct wireless_dev *wdev = info->user_ptr[1];
8390         u64 cookie;
8391
8392         if (!info->attrs[NL80211_ATTR_COOKIE])
8393                 return -EINVAL;
8394
8395         if (!rdev->ops->mgmt_tx_cancel_wait)
8396                 return -EOPNOTSUPP;
8397
8398         switch (wdev->iftype) {
8399         case NL80211_IFTYPE_STATION:
8400         case NL80211_IFTYPE_ADHOC:
8401         case NL80211_IFTYPE_P2P_CLIENT:
8402         case NL80211_IFTYPE_AP:
8403         case NL80211_IFTYPE_AP_VLAN:
8404         case NL80211_IFTYPE_P2P_GO:
8405         case NL80211_IFTYPE_P2P_DEVICE:
8406                 break;
8407         default:
8408                 return -EOPNOTSUPP;
8409         }
8410
8411         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8412
8413         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8414 }
8415
8416 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8417 {
8418         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8419         struct wireless_dev *wdev;
8420         struct net_device *dev = info->user_ptr[1];
8421         u8 ps_state;
8422         bool state;
8423         int err;
8424
8425         if (!info->attrs[NL80211_ATTR_PS_STATE])
8426                 return -EINVAL;
8427
8428         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8429
8430         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8431                 return -EINVAL;
8432
8433         wdev = dev->ieee80211_ptr;
8434
8435         if (!rdev->ops->set_power_mgmt)
8436                 return -EOPNOTSUPP;
8437
8438         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8439
8440         if (state == wdev->ps)
8441                 return 0;
8442
8443         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8444         if (!err)
8445                 wdev->ps = state;
8446         return err;
8447 }
8448
8449 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8450 {
8451         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8452         enum nl80211_ps_state ps_state;
8453         struct wireless_dev *wdev;
8454         struct net_device *dev = info->user_ptr[1];
8455         struct sk_buff *msg;
8456         void *hdr;
8457         int err;
8458
8459         wdev = dev->ieee80211_ptr;
8460
8461         if (!rdev->ops->set_power_mgmt)
8462                 return -EOPNOTSUPP;
8463
8464         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8465         if (!msg)
8466                 return -ENOMEM;
8467
8468         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8469                              NL80211_CMD_GET_POWER_SAVE);
8470         if (!hdr) {
8471                 err = -ENOBUFS;
8472                 goto free_msg;
8473         }
8474
8475         if (wdev->ps)
8476                 ps_state = NL80211_PS_ENABLED;
8477         else
8478                 ps_state = NL80211_PS_DISABLED;
8479
8480         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8481                 goto nla_put_failure;
8482
8483         genlmsg_end(msg, hdr);
8484         return genlmsg_reply(msg, info);
8485
8486  nla_put_failure:
8487         err = -ENOBUFS;
8488  free_msg:
8489         nlmsg_free(msg);
8490         return err;
8491 }
8492
8493 static const struct nla_policy
8494 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8495         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8496         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8497         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8498         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8499         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8500         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8501 };
8502
8503 static int nl80211_set_cqm_txe(struct genl_info *info,
8504                                u32 rate, u32 pkts, u32 intvl)
8505 {
8506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8507         struct net_device *dev = info->user_ptr[1];
8508         struct wireless_dev *wdev = dev->ieee80211_ptr;
8509
8510         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8511                 return -EINVAL;
8512
8513         if (!rdev->ops->set_cqm_txe_config)
8514                 return -EOPNOTSUPP;
8515
8516         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8517             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8518                 return -EOPNOTSUPP;
8519
8520         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8521 }
8522
8523 static int nl80211_set_cqm_rssi(struct genl_info *info,
8524                                 s32 threshold, u32 hysteresis)
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 (threshold > 0)
8531                 return -EINVAL;
8532
8533         /* disabling - hysteresis should also be zero then */
8534         if (threshold == 0)
8535                 hysteresis = 0;
8536
8537         if (!rdev->ops->set_cqm_rssi_config)
8538                 return -EOPNOTSUPP;
8539
8540         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8541             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8542                 return -EOPNOTSUPP;
8543
8544         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8545 }
8546
8547 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8548 {
8549         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8550         struct nlattr *cqm;
8551         int err;
8552
8553         cqm = info->attrs[NL80211_ATTR_CQM];
8554         if (!cqm)
8555                 return -EINVAL;
8556
8557         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8558                                nl80211_attr_cqm_policy);
8559         if (err)
8560                 return err;
8561
8562         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8563             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8564                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8565                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8566
8567                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8568         }
8569
8570         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8571             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8572             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8573                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8574                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8575                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8576
8577                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8578         }
8579
8580         return -EINVAL;
8581 }
8582
8583 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8584 {
8585         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8586         struct net_device *dev = info->user_ptr[1];
8587         struct ocb_setup setup = {};
8588         int err;
8589
8590         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8591         if (err)
8592                 return err;
8593
8594         return cfg80211_join_ocb(rdev, dev, &setup);
8595 }
8596
8597 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8598 {
8599         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8600         struct net_device *dev = info->user_ptr[1];
8601
8602         return cfg80211_leave_ocb(rdev, dev);
8603 }
8604
8605 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8606 {
8607         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8608         struct net_device *dev = info->user_ptr[1];
8609         struct mesh_config cfg;
8610         struct mesh_setup setup;
8611         int err;
8612
8613         /* start with default */
8614         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8615         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8616
8617         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8618                 /* and parse parameters if given */
8619                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8620                 if (err)
8621                         return err;
8622         }
8623
8624         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8625             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8626                 return -EINVAL;
8627
8628         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8629         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8630
8631         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8632             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8633                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8634                         return -EINVAL;
8635
8636         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8637                 setup.beacon_interval =
8638                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8639                 if (setup.beacon_interval < 10 ||
8640                     setup.beacon_interval > 10000)
8641                         return -EINVAL;
8642         }
8643
8644         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8645                 setup.dtim_period =
8646                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8647                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8648                         return -EINVAL;
8649         }
8650
8651         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8652                 /* parse additional setup parameters if given */
8653                 err = nl80211_parse_mesh_setup(info, &setup);
8654                 if (err)
8655                         return err;
8656         }
8657
8658         if (setup.user_mpm)
8659                 cfg.auto_open_plinks = false;
8660
8661         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8662                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8663                 if (err)
8664                         return err;
8665         } else {
8666                 /* cfg80211_join_mesh() will sort it out */
8667                 setup.chandef.chan = NULL;
8668         }
8669
8670         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8671                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8672                 int n_rates =
8673                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8674                 struct ieee80211_supported_band *sband;
8675
8676                 if (!setup.chandef.chan)
8677                         return -EINVAL;
8678
8679                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8680
8681                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8682                                              &setup.basic_rates);
8683                 if (err)
8684                         return err;
8685         }
8686
8687         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8688 }
8689
8690 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8691 {
8692         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8693         struct net_device *dev = info->user_ptr[1];
8694
8695         return cfg80211_leave_mesh(rdev, dev);
8696 }
8697
8698 #ifdef CONFIG_PM
8699 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8700                                         struct cfg80211_registered_device *rdev)
8701 {
8702         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8703         struct nlattr *nl_pats, *nl_pat;
8704         int i, pat_len;
8705
8706         if (!wowlan->n_patterns)
8707                 return 0;
8708
8709         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8710         if (!nl_pats)
8711                 return -ENOBUFS;
8712
8713         for (i = 0; i < wowlan->n_patterns; i++) {
8714                 nl_pat = nla_nest_start(msg, i + 1);
8715                 if (!nl_pat)
8716                         return -ENOBUFS;
8717                 pat_len = wowlan->patterns[i].pattern_len;
8718                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8719                             wowlan->patterns[i].mask) ||
8720                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8721                             wowlan->patterns[i].pattern) ||
8722                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8723                                 wowlan->patterns[i].pkt_offset))
8724                         return -ENOBUFS;
8725                 nla_nest_end(msg, nl_pat);
8726         }
8727         nla_nest_end(msg, nl_pats);
8728
8729         return 0;
8730 }
8731
8732 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8733                                    struct cfg80211_wowlan_tcp *tcp)
8734 {
8735         struct nlattr *nl_tcp;
8736
8737         if (!tcp)
8738                 return 0;
8739
8740         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8741         if (!nl_tcp)
8742                 return -ENOBUFS;
8743
8744         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8745             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8746             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8747             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8748             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8749             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8750                     tcp->payload_len, tcp->payload) ||
8751             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8752                         tcp->data_interval) ||
8753             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8754                     tcp->wake_len, tcp->wake_data) ||
8755             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8756                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8757                 return -ENOBUFS;
8758
8759         if (tcp->payload_seq.len &&
8760             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8761                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8762                 return -ENOBUFS;
8763
8764         if (tcp->payload_tok.len &&
8765             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8766                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8767                     &tcp->payload_tok))
8768                 return -ENOBUFS;
8769
8770         nla_nest_end(msg, nl_tcp);
8771
8772         return 0;
8773 }
8774
8775 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8776                                   struct cfg80211_sched_scan_request *req)
8777 {
8778         struct nlattr *nd, *freqs, *matches, *match;
8779         int i;
8780
8781         if (!req)
8782                 return 0;
8783
8784         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8785         if (!nd)
8786                 return -ENOBUFS;
8787
8788         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8789                 return -ENOBUFS;
8790
8791         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8792         if (!freqs)
8793                 return -ENOBUFS;
8794
8795         for (i = 0; i < req->n_channels; i++)
8796                 nla_put_u32(msg, i, req->channels[i]->center_freq);
8797
8798         nla_nest_end(msg, freqs);
8799
8800         if (req->n_match_sets) {
8801                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8802                 for (i = 0; i < req->n_match_sets; i++) {
8803                         match = nla_nest_start(msg, i);
8804                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8805                                 req->match_sets[i].ssid.ssid_len,
8806                                 req->match_sets[i].ssid.ssid);
8807                         nla_nest_end(msg, match);
8808                 }
8809                 nla_nest_end(msg, matches);
8810         }
8811
8812         nla_nest_end(msg, nd);
8813
8814         return 0;
8815 }
8816
8817 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8818 {
8819         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8820         struct sk_buff *msg;
8821         void *hdr;
8822         u32 size = NLMSG_DEFAULT_SIZE;
8823
8824         if (!rdev->wiphy.wowlan)
8825                 return -EOPNOTSUPP;
8826
8827         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8828                 /* adjust size to have room for all the data */
8829                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8830                         rdev->wiphy.wowlan_config->tcp->payload_len +
8831                         rdev->wiphy.wowlan_config->tcp->wake_len +
8832                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8833         }
8834
8835         msg = nlmsg_new(size, GFP_KERNEL);
8836         if (!msg)
8837                 return -ENOMEM;
8838
8839         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8840                              NL80211_CMD_GET_WOWLAN);
8841         if (!hdr)
8842                 goto nla_put_failure;
8843
8844         if (rdev->wiphy.wowlan_config) {
8845                 struct nlattr *nl_wowlan;
8846
8847                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8848                 if (!nl_wowlan)
8849                         goto nla_put_failure;
8850
8851                 if ((rdev->wiphy.wowlan_config->any &&
8852                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8853                     (rdev->wiphy.wowlan_config->disconnect &&
8854                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8855                     (rdev->wiphy.wowlan_config->magic_pkt &&
8856                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8857                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8858                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8859                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8860                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8861                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8862                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8863                     (rdev->wiphy.wowlan_config->rfkill_release &&
8864                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8865                         goto nla_put_failure;
8866
8867                 if (nl80211_send_wowlan_patterns(msg, rdev))
8868                         goto nla_put_failure;
8869
8870                 if (nl80211_send_wowlan_tcp(msg,
8871                                             rdev->wiphy.wowlan_config->tcp))
8872                         goto nla_put_failure;
8873
8874                 if (nl80211_send_wowlan_nd(
8875                             msg,
8876                             rdev->wiphy.wowlan_config->nd_config))
8877                         goto nla_put_failure;
8878
8879                 nla_nest_end(msg, nl_wowlan);
8880         }
8881
8882         genlmsg_end(msg, hdr);
8883         return genlmsg_reply(msg, info);
8884
8885 nla_put_failure:
8886         nlmsg_free(msg);
8887         return -ENOBUFS;
8888 }
8889
8890 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8891                                     struct nlattr *attr,
8892                                     struct cfg80211_wowlan *trig)
8893 {
8894         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8895         struct cfg80211_wowlan_tcp *cfg;
8896         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8897         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8898         u32 size;
8899         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8900         int err, port;
8901
8902         if (!rdev->wiphy.wowlan->tcp)
8903                 return -EINVAL;
8904
8905         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8906                         nla_data(attr), nla_len(attr),
8907                         nl80211_wowlan_tcp_policy);
8908         if (err)
8909                 return err;
8910
8911         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8912             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8913             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8914             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8915             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8916             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8917             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8918             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8919                 return -EINVAL;
8920
8921         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8922         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8923                 return -EINVAL;
8924
8925         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8926                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8927             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8928                 return -EINVAL;
8929
8930         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8931         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8932                 return -EINVAL;
8933
8934         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8935         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8936                 return -EINVAL;
8937
8938         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8939                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8940
8941                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8942                 tokens_size = tokln - sizeof(*tok);
8943
8944                 if (!tok->len || tokens_size % tok->len)
8945                         return -EINVAL;
8946                 if (!rdev->wiphy.wowlan->tcp->tok)
8947                         return -EINVAL;
8948                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8949                         return -EINVAL;
8950                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8951                         return -EINVAL;
8952                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8953                         return -EINVAL;
8954                 if (tok->offset + tok->len > data_size)
8955                         return -EINVAL;
8956         }
8957
8958         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8959                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8960                 if (!rdev->wiphy.wowlan->tcp->seq)
8961                         return -EINVAL;
8962                 if (seq->len == 0 || seq->len > 4)
8963                         return -EINVAL;
8964                 if (seq->len + seq->offset > data_size)
8965                         return -EINVAL;
8966         }
8967
8968         size = sizeof(*cfg);
8969         size += data_size;
8970         size += wake_size + wake_mask_size;
8971         size += tokens_size;
8972
8973         cfg = kzalloc(size, GFP_KERNEL);
8974         if (!cfg)
8975                 return -ENOMEM;
8976         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8977         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8978         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8979                ETH_ALEN);
8980         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8981                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8982         else
8983                 port = 0;
8984 #ifdef CONFIG_INET
8985         /* allocate a socket and port for it and use it */
8986         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8987                             IPPROTO_TCP, &cfg->sock, 1);
8988         if (err) {
8989                 kfree(cfg);
8990                 return err;
8991         }
8992         if (inet_csk_get_port(cfg->sock->sk, port)) {
8993                 sock_release(cfg->sock);
8994                 kfree(cfg);
8995                 return -EADDRINUSE;
8996         }
8997         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8998 #else
8999         if (!port) {
9000                 kfree(cfg);
9001                 return -EINVAL;
9002         }
9003         cfg->src_port = port;
9004 #endif
9005
9006         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9007         cfg->payload_len = data_size;
9008         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9009         memcpy((void *)cfg->payload,
9010                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9011                data_size);
9012         if (seq)
9013                 cfg->payload_seq = *seq;
9014         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9015         cfg->wake_len = wake_size;
9016         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9017         memcpy((void *)cfg->wake_data,
9018                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9019                wake_size);
9020         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9021                          data_size + wake_size;
9022         memcpy((void *)cfg->wake_mask,
9023                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9024                wake_mask_size);
9025         if (tok) {
9026                 cfg->tokens_size = tokens_size;
9027                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9028         }
9029
9030         trig->tcp = cfg;
9031
9032         return 0;
9033 }
9034
9035 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9036                                    const struct wiphy_wowlan_support *wowlan,
9037                                    struct nlattr *attr,
9038                                    struct cfg80211_wowlan *trig)
9039 {
9040         struct nlattr **tb;
9041         int err;
9042
9043         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9044         if (!tb)
9045                 return -ENOMEM;
9046
9047         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9048                 err = -EOPNOTSUPP;
9049                 goto out;
9050         }
9051
9052         err = nla_parse(tb, NL80211_ATTR_MAX,
9053                         nla_data(attr), nla_len(attr),
9054                         nl80211_policy);
9055         if (err)
9056                 goto out;
9057
9058         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9059         err = PTR_ERR_OR_ZERO(trig->nd_config);
9060         if (err)
9061                 trig->nd_config = NULL;
9062
9063 out:
9064         kfree(tb);
9065         return err;
9066 }
9067
9068 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9069 {
9070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9071         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9072         struct cfg80211_wowlan new_triggers = {};
9073         struct cfg80211_wowlan *ntrig;
9074         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9075         int err, i;
9076         bool prev_enabled = rdev->wiphy.wowlan_config;
9077
9078         if (!wowlan)
9079                 return -EOPNOTSUPP;
9080
9081         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9082                 cfg80211_rdev_free_wowlan(rdev);
9083                 rdev->wiphy.wowlan_config = NULL;
9084                 goto set_wakeup;
9085         }
9086
9087         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9088                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9089                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9090                         nl80211_wowlan_policy);
9091         if (err)
9092                 return err;
9093
9094         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9095                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9096                         return -EINVAL;
9097                 new_triggers.any = true;
9098         }
9099
9100         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9101                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9102                         return -EINVAL;
9103                 new_triggers.disconnect = true;
9104         }
9105
9106         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9107                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9108                         return -EINVAL;
9109                 new_triggers.magic_pkt = true;
9110         }
9111
9112         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9113                 return -EINVAL;
9114
9115         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9116                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9117                         return -EINVAL;
9118                 new_triggers.gtk_rekey_failure = true;
9119         }
9120
9121         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9122                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9123                         return -EINVAL;
9124                 new_triggers.eap_identity_req = true;
9125         }
9126
9127         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9128                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9129                         return -EINVAL;
9130                 new_triggers.four_way_handshake = true;
9131         }
9132
9133         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9134                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9135                         return -EINVAL;
9136                 new_triggers.rfkill_release = true;
9137         }
9138
9139         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9140                 struct nlattr *pat;
9141                 int n_patterns = 0;
9142                 int rem, pat_len, mask_len, pkt_offset;
9143                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9144
9145                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9146                                     rem)
9147                         n_patterns++;
9148                 if (n_patterns > wowlan->n_patterns)
9149                         return -EINVAL;
9150
9151                 new_triggers.patterns = kcalloc(n_patterns,
9152                                                 sizeof(new_triggers.patterns[0]),
9153                                                 GFP_KERNEL);
9154                 if (!new_triggers.patterns)
9155                         return -ENOMEM;
9156
9157                 new_triggers.n_patterns = n_patterns;
9158                 i = 0;
9159
9160                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9161                                     rem) {
9162                         u8 *mask_pat;
9163
9164                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9165                                   nla_len(pat), NULL);
9166                         err = -EINVAL;
9167                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9168                             !pat_tb[NL80211_PKTPAT_PATTERN])
9169                                 goto error;
9170                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9171                         mask_len = DIV_ROUND_UP(pat_len, 8);
9172                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9173                                 goto error;
9174                         if (pat_len > wowlan->pattern_max_len ||
9175                             pat_len < wowlan->pattern_min_len)
9176                                 goto error;
9177
9178                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9179                                 pkt_offset = 0;
9180                         else
9181                                 pkt_offset = nla_get_u32(
9182                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9183                         if (pkt_offset > wowlan->max_pkt_offset)
9184                                 goto error;
9185                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9186
9187                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9188                         if (!mask_pat) {
9189                                 err = -ENOMEM;
9190                                 goto error;
9191                         }
9192                         new_triggers.patterns[i].mask = mask_pat;
9193                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9194                                mask_len);
9195                         mask_pat += mask_len;
9196                         new_triggers.patterns[i].pattern = mask_pat;
9197                         new_triggers.patterns[i].pattern_len = pat_len;
9198                         memcpy(mask_pat,
9199                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9200                                pat_len);
9201                         i++;
9202                 }
9203         }
9204
9205         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9206                 err = nl80211_parse_wowlan_tcp(
9207                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9208                         &new_triggers);
9209                 if (err)
9210                         goto error;
9211         }
9212
9213         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9214                 err = nl80211_parse_wowlan_nd(
9215                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9216                         &new_triggers);
9217                 if (err)
9218                         goto error;
9219         }
9220
9221         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9222         if (!ntrig) {
9223                 err = -ENOMEM;
9224                 goto error;
9225         }
9226         cfg80211_rdev_free_wowlan(rdev);
9227         rdev->wiphy.wowlan_config = ntrig;
9228
9229  set_wakeup:
9230         if (rdev->ops->set_wakeup &&
9231             prev_enabled != !!rdev->wiphy.wowlan_config)
9232                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9233
9234         return 0;
9235  error:
9236         for (i = 0; i < new_triggers.n_patterns; i++)
9237                 kfree(new_triggers.patterns[i].mask);
9238         kfree(new_triggers.patterns);
9239         if (new_triggers.tcp && new_triggers.tcp->sock)
9240                 sock_release(new_triggers.tcp->sock);
9241         kfree(new_triggers.tcp);
9242         return err;
9243 }
9244 #endif
9245
9246 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9247                                        struct cfg80211_registered_device *rdev)
9248 {
9249         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9250         int i, j, pat_len;
9251         struct cfg80211_coalesce_rules *rule;
9252
9253         if (!rdev->coalesce->n_rules)
9254                 return 0;
9255
9256         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9257         if (!nl_rules)
9258                 return -ENOBUFS;
9259
9260         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9261                 nl_rule = nla_nest_start(msg, i + 1);
9262                 if (!nl_rule)
9263                         return -ENOBUFS;
9264
9265                 rule = &rdev->coalesce->rules[i];
9266                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9267                                 rule->delay))
9268                         return -ENOBUFS;
9269
9270                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9271                                 rule->condition))
9272                         return -ENOBUFS;
9273
9274                 nl_pats = nla_nest_start(msg,
9275                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9276                 if (!nl_pats)
9277                         return -ENOBUFS;
9278
9279                 for (j = 0; j < rule->n_patterns; j++) {
9280                         nl_pat = nla_nest_start(msg, j + 1);
9281                         if (!nl_pat)
9282                                 return -ENOBUFS;
9283                         pat_len = rule->patterns[j].pattern_len;
9284                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9285                                     DIV_ROUND_UP(pat_len, 8),
9286                                     rule->patterns[j].mask) ||
9287                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9288                                     rule->patterns[j].pattern) ||
9289                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9290                                         rule->patterns[j].pkt_offset))
9291                                 return -ENOBUFS;
9292                         nla_nest_end(msg, nl_pat);
9293                 }
9294                 nla_nest_end(msg, nl_pats);
9295                 nla_nest_end(msg, nl_rule);
9296         }
9297         nla_nest_end(msg, nl_rules);
9298
9299         return 0;
9300 }
9301
9302 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9303 {
9304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9305         struct sk_buff *msg;
9306         void *hdr;
9307
9308         if (!rdev->wiphy.coalesce)
9309                 return -EOPNOTSUPP;
9310
9311         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9312         if (!msg)
9313                 return -ENOMEM;
9314
9315         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9316                              NL80211_CMD_GET_COALESCE);
9317         if (!hdr)
9318                 goto nla_put_failure;
9319
9320         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9321                 goto nla_put_failure;
9322
9323         genlmsg_end(msg, hdr);
9324         return genlmsg_reply(msg, info);
9325
9326 nla_put_failure:
9327         nlmsg_free(msg);
9328         return -ENOBUFS;
9329 }
9330
9331 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9332 {
9333         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9334         int i, j;
9335         struct cfg80211_coalesce_rules *rule;
9336
9337         if (!coalesce)
9338                 return;
9339
9340         for (i = 0; i < coalesce->n_rules; i++) {
9341                 rule = &coalesce->rules[i];
9342                 for (j = 0; j < rule->n_patterns; j++)
9343                         kfree(rule->patterns[j].mask);
9344                 kfree(rule->patterns);
9345         }
9346         kfree(coalesce->rules);
9347         kfree(coalesce);
9348         rdev->coalesce = NULL;
9349 }
9350
9351 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9352                                        struct nlattr *rule,
9353                                        struct cfg80211_coalesce_rules *new_rule)
9354 {
9355         int err, i;
9356         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9357         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9358         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9359         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9360
9361         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9362                         nla_len(rule), nl80211_coalesce_policy);
9363         if (err)
9364                 return err;
9365
9366         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9367                 new_rule->delay =
9368                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9369         if (new_rule->delay > coalesce->max_delay)
9370                 return -EINVAL;
9371
9372         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9373                 new_rule->condition =
9374                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9375         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9376             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9377                 return -EINVAL;
9378
9379         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9380                 return -EINVAL;
9381
9382         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9383                             rem)
9384                 n_patterns++;
9385         if (n_patterns > coalesce->n_patterns)
9386                 return -EINVAL;
9387
9388         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9389                                      GFP_KERNEL);
9390         if (!new_rule->patterns)
9391                 return -ENOMEM;
9392
9393         new_rule->n_patterns = n_patterns;
9394         i = 0;
9395
9396         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9397                             rem) {
9398                 u8 *mask_pat;
9399
9400                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9401                           nla_len(pat), NULL);
9402                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9403                     !pat_tb[NL80211_PKTPAT_PATTERN])
9404                         return -EINVAL;
9405                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9406                 mask_len = DIV_ROUND_UP(pat_len, 8);
9407                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9408                         return -EINVAL;
9409                 if (pat_len > coalesce->pattern_max_len ||
9410                     pat_len < coalesce->pattern_min_len)
9411                         return -EINVAL;
9412
9413                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9414                         pkt_offset = 0;
9415                 else
9416                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9417                 if (pkt_offset > coalesce->max_pkt_offset)
9418                         return -EINVAL;
9419                 new_rule->patterns[i].pkt_offset = pkt_offset;
9420
9421                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9422                 if (!mask_pat)
9423                         return -ENOMEM;
9424
9425                 new_rule->patterns[i].mask = mask_pat;
9426                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9427                        mask_len);
9428
9429                 mask_pat += mask_len;
9430                 new_rule->patterns[i].pattern = mask_pat;
9431                 new_rule->patterns[i].pattern_len = pat_len;
9432                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9433                        pat_len);
9434                 i++;
9435         }
9436
9437         return 0;
9438 }
9439
9440 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9441 {
9442         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9443         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9444         struct cfg80211_coalesce new_coalesce = {};
9445         struct cfg80211_coalesce *n_coalesce;
9446         int err, rem_rule, n_rules = 0, i, j;
9447         struct nlattr *rule;
9448         struct cfg80211_coalesce_rules *tmp_rule;
9449
9450         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9451                 return -EOPNOTSUPP;
9452
9453         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9454                 cfg80211_rdev_free_coalesce(rdev);
9455                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9456                 return 0;
9457         }
9458
9459         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9460                             rem_rule)
9461                 n_rules++;
9462         if (n_rules > coalesce->n_rules)
9463                 return -EINVAL;
9464
9465         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9466                                      GFP_KERNEL);
9467         if (!new_coalesce.rules)
9468                 return -ENOMEM;
9469
9470         new_coalesce.n_rules = n_rules;
9471         i = 0;
9472
9473         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9474                             rem_rule) {
9475                 err = nl80211_parse_coalesce_rule(rdev, rule,
9476                                                   &new_coalesce.rules[i]);
9477                 if (err)
9478                         goto error;
9479
9480                 i++;
9481         }
9482
9483         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9484         if (err)
9485                 goto error;
9486
9487         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9488         if (!n_coalesce) {
9489                 err = -ENOMEM;
9490                 goto error;
9491         }
9492         cfg80211_rdev_free_coalesce(rdev);
9493         rdev->coalesce = n_coalesce;
9494
9495         return 0;
9496 error:
9497         for (i = 0; i < new_coalesce.n_rules; i++) {
9498                 tmp_rule = &new_coalesce.rules[i];
9499                 for (j = 0; j < tmp_rule->n_patterns; j++)
9500                         kfree(tmp_rule->patterns[j].mask);
9501                 kfree(tmp_rule->patterns);
9502         }
9503         kfree(new_coalesce.rules);
9504
9505         return err;
9506 }
9507
9508 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9509 {
9510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9511         struct net_device *dev = info->user_ptr[1];
9512         struct wireless_dev *wdev = dev->ieee80211_ptr;
9513         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9514         struct cfg80211_gtk_rekey_data rekey_data;
9515         int err;
9516
9517         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9518                 return -EINVAL;
9519
9520         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9521                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9522                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9523                         nl80211_rekey_policy);
9524         if (err)
9525                 return err;
9526
9527         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9528                 return -ERANGE;
9529         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9530                 return -ERANGE;
9531         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9532                 return -ERANGE;
9533
9534         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9535         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9536         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9537
9538         wdev_lock(wdev);
9539         if (!wdev->current_bss) {
9540                 err = -ENOTCONN;
9541                 goto out;
9542         }
9543
9544         if (!rdev->ops->set_rekey_data) {
9545                 err = -EOPNOTSUPP;
9546                 goto out;
9547         }
9548
9549         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9550  out:
9551         wdev_unlock(wdev);
9552         return err;
9553 }
9554
9555 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9556                                              struct genl_info *info)
9557 {
9558         struct net_device *dev = info->user_ptr[1];
9559         struct wireless_dev *wdev = dev->ieee80211_ptr;
9560
9561         if (wdev->iftype != NL80211_IFTYPE_AP &&
9562             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9563                 return -EINVAL;
9564
9565         if (wdev->ap_unexpected_nlportid)
9566                 return -EBUSY;
9567
9568         wdev->ap_unexpected_nlportid = info->snd_portid;
9569         return 0;
9570 }
9571
9572 static int nl80211_probe_client(struct sk_buff *skb,
9573                                 struct genl_info *info)
9574 {
9575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9576         struct net_device *dev = info->user_ptr[1];
9577         struct wireless_dev *wdev = dev->ieee80211_ptr;
9578         struct sk_buff *msg;
9579         void *hdr;
9580         const u8 *addr;
9581         u64 cookie;
9582         int err;
9583
9584         if (wdev->iftype != NL80211_IFTYPE_AP &&
9585             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9586                 return -EOPNOTSUPP;
9587
9588         if (!info->attrs[NL80211_ATTR_MAC])
9589                 return -EINVAL;
9590
9591         if (!rdev->ops->probe_client)
9592                 return -EOPNOTSUPP;
9593
9594         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9595         if (!msg)
9596                 return -ENOMEM;
9597
9598         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9599                              NL80211_CMD_PROBE_CLIENT);
9600         if (!hdr) {
9601                 err = -ENOBUFS;
9602                 goto free_msg;
9603         }
9604
9605         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9606
9607         err = rdev_probe_client(rdev, dev, addr, &cookie);
9608         if (err)
9609                 goto free_msg;
9610
9611         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9612                 goto nla_put_failure;
9613
9614         genlmsg_end(msg, hdr);
9615
9616         return genlmsg_reply(msg, info);
9617
9618  nla_put_failure:
9619         err = -ENOBUFS;
9620  free_msg:
9621         nlmsg_free(msg);
9622         return err;
9623 }
9624
9625 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9626 {
9627         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9628         struct cfg80211_beacon_registration *reg, *nreg;
9629         int rv;
9630
9631         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9632                 return -EOPNOTSUPP;
9633
9634         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9635         if (!nreg)
9636                 return -ENOMEM;
9637
9638         /* First, check if already registered. */
9639         spin_lock_bh(&rdev->beacon_registrations_lock);
9640         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9641                 if (reg->nlportid == info->snd_portid) {
9642                         rv = -EALREADY;
9643                         goto out_err;
9644                 }
9645         }
9646         /* Add it to the list */
9647         nreg->nlportid = info->snd_portid;
9648         list_add(&nreg->list, &rdev->beacon_registrations);
9649
9650         spin_unlock_bh(&rdev->beacon_registrations_lock);
9651
9652         return 0;
9653 out_err:
9654         spin_unlock_bh(&rdev->beacon_registrations_lock);
9655         kfree(nreg);
9656         return rv;
9657 }
9658
9659 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9660 {
9661         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9662         struct wireless_dev *wdev = info->user_ptr[1];
9663         int err;
9664
9665         if (!rdev->ops->start_p2p_device)
9666                 return -EOPNOTSUPP;
9667
9668         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9669                 return -EOPNOTSUPP;
9670
9671         if (wdev->p2p_started)
9672                 return 0;
9673
9674         if (rfkill_blocked(rdev->rfkill))
9675                 return -ERFKILL;
9676
9677         err = rdev_start_p2p_device(rdev, wdev);
9678         if (err)
9679                 return err;
9680
9681         wdev->p2p_started = true;
9682         rdev->opencount++;
9683
9684         return 0;
9685 }
9686
9687 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9688 {
9689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9690         struct wireless_dev *wdev = info->user_ptr[1];
9691
9692         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9693                 return -EOPNOTSUPP;
9694
9695         if (!rdev->ops->stop_p2p_device)
9696                 return -EOPNOTSUPP;
9697
9698         cfg80211_stop_p2p_device(rdev, wdev);
9699
9700         return 0;
9701 }
9702
9703 static int nl80211_get_protocol_features(struct sk_buff *skb,
9704                                          struct genl_info *info)
9705 {
9706         void *hdr;
9707         struct sk_buff *msg;
9708
9709         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9710         if (!msg)
9711                 return -ENOMEM;
9712
9713         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9714                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9715         if (!hdr)
9716                 goto nla_put_failure;
9717
9718         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9719                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9720                 goto nla_put_failure;
9721
9722         genlmsg_end(msg, hdr);
9723         return genlmsg_reply(msg, info);
9724
9725  nla_put_failure:
9726         kfree_skb(msg);
9727         return -ENOBUFS;
9728 }
9729
9730 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9731 {
9732         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9733         struct cfg80211_update_ft_ies_params ft_params;
9734         struct net_device *dev = info->user_ptr[1];
9735
9736         if (!rdev->ops->update_ft_ies)
9737                 return -EOPNOTSUPP;
9738
9739         if (!info->attrs[NL80211_ATTR_MDID] ||
9740             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9741                 return -EINVAL;
9742
9743         memset(&ft_params, 0, sizeof(ft_params));
9744         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9745         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9746         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9747
9748         return rdev_update_ft_ies(rdev, dev, &ft_params);
9749 }
9750
9751 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9752                                        struct genl_info *info)
9753 {
9754         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9755         struct wireless_dev *wdev = info->user_ptr[1];
9756         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9757         u16 duration;
9758         int ret;
9759
9760         if (!rdev->ops->crit_proto_start)
9761                 return -EOPNOTSUPP;
9762
9763         if (WARN_ON(!rdev->ops->crit_proto_stop))
9764                 return -EINVAL;
9765
9766         if (rdev->crit_proto_nlportid)
9767                 return -EBUSY;
9768
9769         /* determine protocol if provided */
9770         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9771                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9772
9773         if (proto >= NUM_NL80211_CRIT_PROTO)
9774                 return -EINVAL;
9775
9776         /* timeout must be provided */
9777         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9778                 return -EINVAL;
9779
9780         duration =
9781                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9782
9783         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9784                 return -ERANGE;
9785
9786         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9787         if (!ret)
9788                 rdev->crit_proto_nlportid = info->snd_portid;
9789
9790         return ret;
9791 }
9792
9793 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9794                                       struct genl_info *info)
9795 {
9796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9797         struct wireless_dev *wdev = info->user_ptr[1];
9798
9799         if (!rdev->ops->crit_proto_stop)
9800                 return -EOPNOTSUPP;
9801
9802         if (rdev->crit_proto_nlportid) {
9803                 rdev->crit_proto_nlportid = 0;
9804                 rdev_crit_proto_stop(rdev, wdev);
9805         }
9806         return 0;
9807 }
9808
9809 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9810 {
9811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9812         struct wireless_dev *wdev =
9813                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9814         int i, err;
9815         u32 vid, subcmd;
9816
9817         if (!rdev->wiphy.vendor_commands)
9818                 return -EOPNOTSUPP;
9819
9820         if (IS_ERR(wdev)) {
9821                 err = PTR_ERR(wdev);
9822                 if (err != -EINVAL)
9823                         return err;
9824                 wdev = NULL;
9825         } else if (wdev->wiphy != &rdev->wiphy) {
9826                 return -EINVAL;
9827         }
9828
9829         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9830             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9831                 return -EINVAL;
9832
9833         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9834         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9835         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9836                 const struct wiphy_vendor_command *vcmd;
9837                 void *data = NULL;
9838                 int len = 0;
9839
9840                 vcmd = &rdev->wiphy.vendor_commands[i];
9841
9842                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9843                         continue;
9844
9845                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9846                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9847                         if (!wdev)
9848                                 return -EINVAL;
9849                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9850                             !wdev->netdev)
9851                                 return -EINVAL;
9852
9853                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9854                                 if (wdev->netdev &&
9855                                     !netif_running(wdev->netdev))
9856                                         return -ENETDOWN;
9857                                 if (!wdev->netdev && !wdev->p2p_started)
9858                                         return -ENETDOWN;
9859                         }
9860                 } else {
9861                         wdev = NULL;
9862                 }
9863
9864                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9865                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9866                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9867                 }
9868
9869                 rdev->cur_cmd_info = info;
9870                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9871                                                           data, len);
9872                 rdev->cur_cmd_info = NULL;
9873                 return err;
9874         }
9875
9876         return -EOPNOTSUPP;
9877 }
9878
9879 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9880                                            enum nl80211_commands cmd,
9881                                            enum nl80211_attrs attr,
9882                                            int approxlen)
9883 {
9884         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9885
9886         if (WARN_ON(!rdev->cur_cmd_info))
9887                 return NULL;
9888
9889         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9890                                            rdev->cur_cmd_info->snd_portid,
9891                                            rdev->cur_cmd_info->snd_seq,
9892                                            cmd, attr, NULL, GFP_KERNEL);
9893 }
9894 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9895
9896 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9897 {
9898         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9899         void *hdr = ((void **)skb->cb)[1];
9900         struct nlattr *data = ((void **)skb->cb)[2];
9901
9902         /* clear CB data for netlink core to own from now on */
9903         memset(skb->cb, 0, sizeof(skb->cb));
9904
9905         if (WARN_ON(!rdev->cur_cmd_info)) {
9906                 kfree_skb(skb);
9907                 return -EINVAL;
9908         }
9909
9910         nla_nest_end(skb, data);
9911         genlmsg_end(skb, hdr);
9912         return genlmsg_reply(skb, rdev->cur_cmd_info);
9913 }
9914 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9915
9916
9917 static int nl80211_set_qos_map(struct sk_buff *skb,
9918                                struct genl_info *info)
9919 {
9920         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9921         struct cfg80211_qos_map *qos_map = NULL;
9922         struct net_device *dev = info->user_ptr[1];
9923         u8 *pos, len, num_des, des_len, des;
9924         int ret;
9925
9926         if (!rdev->ops->set_qos_map)
9927                 return -EOPNOTSUPP;
9928
9929         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9930                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9931                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9932
9933                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9934                     len > IEEE80211_QOS_MAP_LEN_MAX)
9935                         return -EINVAL;
9936
9937                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9938                 if (!qos_map)
9939                         return -ENOMEM;
9940
9941                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9942                 if (num_des) {
9943                         des_len = num_des *
9944                                 sizeof(struct cfg80211_dscp_exception);
9945                         memcpy(qos_map->dscp_exception, pos, des_len);
9946                         qos_map->num_des = num_des;
9947                         for (des = 0; des < num_des; des++) {
9948                                 if (qos_map->dscp_exception[des].up > 7) {
9949                                         kfree(qos_map);
9950                                         return -EINVAL;
9951                                 }
9952                         }
9953                         pos += des_len;
9954                 }
9955                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9956         }
9957
9958         wdev_lock(dev->ieee80211_ptr);
9959         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9960         if (!ret)
9961                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9962         wdev_unlock(dev->ieee80211_ptr);
9963
9964         kfree(qos_map);
9965         return ret;
9966 }
9967
9968 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9969 {
9970         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9971         struct net_device *dev = info->user_ptr[1];
9972         struct wireless_dev *wdev = dev->ieee80211_ptr;
9973         const u8 *peer;
9974         u8 tsid, up;
9975         u16 admitted_time = 0;
9976         int err;
9977
9978         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9979                 return -EOPNOTSUPP;
9980
9981         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9982             !info->attrs[NL80211_ATTR_USER_PRIO])
9983                 return -EINVAL;
9984
9985         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9986         if (tsid >= IEEE80211_NUM_TIDS)
9987                 return -EINVAL;
9988
9989         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9990         if (up >= IEEE80211_NUM_UPS)
9991                 return -EINVAL;
9992
9993         /* WMM uses TIDs 0-7 even for TSPEC */
9994         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9995                 /* TODO: handle 802.11 TSPEC/admission control
9996                  * need more attributes for that (e.g. BA session requirement);
9997                  * change the WMM adminssion test above to allow both then
9998                  */
9999                 return -EINVAL;
10000         }
10001
10002         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10003
10004         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10005                 admitted_time =
10006                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10007                 if (!admitted_time)
10008                         return -EINVAL;
10009         }
10010
10011         wdev_lock(wdev);
10012         switch (wdev->iftype) {
10013         case NL80211_IFTYPE_STATION:
10014         case NL80211_IFTYPE_P2P_CLIENT:
10015                 if (wdev->current_bss)
10016                         break;
10017                 err = -ENOTCONN;
10018                 goto out;
10019         default:
10020                 err = -EOPNOTSUPP;
10021                 goto out;
10022         }
10023
10024         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10025
10026  out:
10027         wdev_unlock(wdev);
10028         return err;
10029 }
10030
10031 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10032 {
10033         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10034         struct net_device *dev = info->user_ptr[1];
10035         struct wireless_dev *wdev = dev->ieee80211_ptr;
10036         const u8 *peer;
10037         u8 tsid;
10038         int err;
10039
10040         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10041                 return -EINVAL;
10042
10043         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10044         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10045
10046         wdev_lock(wdev);
10047         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10048         wdev_unlock(wdev);
10049
10050         return err;
10051 }
10052
10053 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10054                                        struct genl_info *info)
10055 {
10056         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10057         struct net_device *dev = info->user_ptr[1];
10058         struct wireless_dev *wdev = dev->ieee80211_ptr;
10059         struct cfg80211_chan_def chandef = {};
10060         const u8 *addr;
10061         u8 oper_class;
10062         int err;
10063
10064         if (!rdev->ops->tdls_channel_switch ||
10065             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10066                 return -EOPNOTSUPP;
10067
10068         switch (dev->ieee80211_ptr->iftype) {
10069         case NL80211_IFTYPE_STATION:
10070         case NL80211_IFTYPE_P2P_CLIENT:
10071                 break;
10072         default:
10073                 return -EOPNOTSUPP;
10074         }
10075
10076         if (!info->attrs[NL80211_ATTR_MAC] ||
10077             !info->attrs[NL80211_ATTR_OPER_CLASS])
10078                 return -EINVAL;
10079
10080         err = nl80211_parse_chandef(rdev, info, &chandef);
10081         if (err)
10082                 return err;
10083
10084         /*
10085          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10086          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10087          * specification is not defined for them.
10088          */
10089         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10090             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10091             chandef.width != NL80211_CHAN_WIDTH_20)
10092                 return -EINVAL;
10093
10094         /* we will be active on the TDLS link */
10095         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10096                 return -EINVAL;
10097
10098         /* don't allow switching to DFS channels */
10099         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10100                 return -EINVAL;
10101
10102         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10103         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10104
10105         wdev_lock(wdev);
10106         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10107         wdev_unlock(wdev);
10108
10109         return err;
10110 }
10111
10112 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10113                                               struct genl_info *info)
10114 {
10115         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10116         struct net_device *dev = info->user_ptr[1];
10117         struct wireless_dev *wdev = dev->ieee80211_ptr;
10118         const u8 *addr;
10119
10120         if (!rdev->ops->tdls_channel_switch ||
10121             !rdev->ops->tdls_cancel_channel_switch ||
10122             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10123                 return -EOPNOTSUPP;
10124
10125         switch (dev->ieee80211_ptr->iftype) {
10126         case NL80211_IFTYPE_STATION:
10127         case NL80211_IFTYPE_P2P_CLIENT:
10128                 break;
10129         default:
10130                 return -EOPNOTSUPP;
10131         }
10132
10133         if (!info->attrs[NL80211_ATTR_MAC])
10134                 return -EINVAL;
10135
10136         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10137
10138         wdev_lock(wdev);
10139         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10140         wdev_unlock(wdev);
10141
10142         return 0;
10143 }
10144
10145 #define NL80211_FLAG_NEED_WIPHY         0x01
10146 #define NL80211_FLAG_NEED_NETDEV        0x02
10147 #define NL80211_FLAG_NEED_RTNL          0x04
10148 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10149 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10150                                          NL80211_FLAG_CHECK_NETDEV_UP)
10151 #define NL80211_FLAG_NEED_WDEV          0x10
10152 /* If a netdev is associated, it must be UP, P2P must be started */
10153 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10154                                          NL80211_FLAG_CHECK_NETDEV_UP)
10155 #define NL80211_FLAG_CLEAR_SKB          0x20
10156
10157 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10158                             struct genl_info *info)
10159 {
10160         struct cfg80211_registered_device *rdev;
10161         struct wireless_dev *wdev;
10162         struct net_device *dev;
10163         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10164
10165         if (rtnl)
10166                 rtnl_lock();
10167
10168         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10169                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10170                 if (IS_ERR(rdev)) {
10171                         if (rtnl)
10172                                 rtnl_unlock();
10173                         return PTR_ERR(rdev);
10174                 }
10175                 info->user_ptr[0] = rdev;
10176         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10177                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10178                 ASSERT_RTNL();
10179
10180                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10181                                                   info->attrs);
10182                 if (IS_ERR(wdev)) {
10183                         if (rtnl)
10184                                 rtnl_unlock();
10185                         return PTR_ERR(wdev);
10186                 }
10187
10188                 dev = wdev->netdev;
10189                 rdev = wiphy_to_rdev(wdev->wiphy);
10190
10191                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10192                         if (!dev) {
10193                                 if (rtnl)
10194                                         rtnl_unlock();
10195                                 return -EINVAL;
10196                         }
10197
10198                         info->user_ptr[1] = dev;
10199                 } else {
10200                         info->user_ptr[1] = wdev;
10201                 }
10202
10203                 if (dev) {
10204                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10205                             !netif_running(dev)) {
10206                                 if (rtnl)
10207                                         rtnl_unlock();
10208                                 return -ENETDOWN;
10209                         }
10210
10211                         dev_hold(dev);
10212                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10213                         if (!wdev->p2p_started) {
10214                                 if (rtnl)
10215                                         rtnl_unlock();
10216                                 return -ENETDOWN;
10217                         }
10218                 }
10219
10220                 info->user_ptr[0] = rdev;
10221         }
10222
10223         return 0;
10224 }
10225
10226 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10227                               struct genl_info *info)
10228 {
10229         if (info->user_ptr[1]) {
10230                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10231                         struct wireless_dev *wdev = info->user_ptr[1];
10232
10233                         if (wdev->netdev)
10234                                 dev_put(wdev->netdev);
10235                 } else {
10236                         dev_put(info->user_ptr[1]);
10237                 }
10238         }
10239
10240         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10241                 rtnl_unlock();
10242
10243         /* If needed, clear the netlink message payload from the SKB
10244          * as it might contain key data that shouldn't stick around on
10245          * the heap after the SKB is freed. The netlink message header
10246          * is still needed for further processing, so leave it intact.
10247          */
10248         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10249                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10250
10251                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10252         }
10253 }
10254
10255 static const struct genl_ops nl80211_ops[] = {
10256         {
10257                 .cmd = NL80211_CMD_GET_WIPHY,
10258                 .doit = nl80211_get_wiphy,
10259                 .dumpit = nl80211_dump_wiphy,
10260                 .done = nl80211_dump_wiphy_done,
10261                 .policy = nl80211_policy,
10262                 /* can be retrieved by unprivileged users */
10263                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10264                                   NL80211_FLAG_NEED_RTNL,
10265         },
10266         {
10267                 .cmd = NL80211_CMD_SET_WIPHY,
10268                 .doit = nl80211_set_wiphy,
10269                 .policy = nl80211_policy,
10270                 .flags = GENL_ADMIN_PERM,
10271                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10272         },
10273         {
10274                 .cmd = NL80211_CMD_GET_INTERFACE,
10275                 .doit = nl80211_get_interface,
10276                 .dumpit = nl80211_dump_interface,
10277                 .policy = nl80211_policy,
10278                 /* can be retrieved by unprivileged users */
10279                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10280                                   NL80211_FLAG_NEED_RTNL,
10281         },
10282         {
10283                 .cmd = NL80211_CMD_SET_INTERFACE,
10284                 .doit = nl80211_set_interface,
10285                 .policy = nl80211_policy,
10286                 .flags = GENL_ADMIN_PERM,
10287                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10288                                   NL80211_FLAG_NEED_RTNL,
10289         },
10290         {
10291                 .cmd = NL80211_CMD_NEW_INTERFACE,
10292                 .doit = nl80211_new_interface,
10293                 .policy = nl80211_policy,
10294                 .flags = GENL_ADMIN_PERM,
10295                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10296                                   NL80211_FLAG_NEED_RTNL,
10297         },
10298         {
10299                 .cmd = NL80211_CMD_DEL_INTERFACE,
10300                 .doit = nl80211_del_interface,
10301                 .policy = nl80211_policy,
10302                 .flags = GENL_ADMIN_PERM,
10303                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10304                                   NL80211_FLAG_NEED_RTNL,
10305         },
10306         {
10307                 .cmd = NL80211_CMD_GET_KEY,
10308                 .doit = nl80211_get_key,
10309                 .policy = nl80211_policy,
10310                 .flags = GENL_ADMIN_PERM,
10311                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10312                                   NL80211_FLAG_NEED_RTNL,
10313         },
10314         {
10315                 .cmd = NL80211_CMD_SET_KEY,
10316                 .doit = nl80211_set_key,
10317                 .policy = nl80211_policy,
10318                 .flags = GENL_ADMIN_PERM,
10319                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10320                                   NL80211_FLAG_NEED_RTNL |
10321                                   NL80211_FLAG_CLEAR_SKB,
10322         },
10323         {
10324                 .cmd = NL80211_CMD_NEW_KEY,
10325                 .doit = nl80211_new_key,
10326                 .policy = nl80211_policy,
10327                 .flags = GENL_ADMIN_PERM,
10328                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10329                                   NL80211_FLAG_NEED_RTNL |
10330                                   NL80211_FLAG_CLEAR_SKB,
10331         },
10332         {
10333                 .cmd = NL80211_CMD_DEL_KEY,
10334                 .doit = nl80211_del_key,
10335                 .policy = nl80211_policy,
10336                 .flags = GENL_ADMIN_PERM,
10337                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10338                                   NL80211_FLAG_NEED_RTNL,
10339         },
10340         {
10341                 .cmd = NL80211_CMD_SET_BEACON,
10342                 .policy = nl80211_policy,
10343                 .flags = GENL_ADMIN_PERM,
10344                 .doit = nl80211_set_beacon,
10345                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10346                                   NL80211_FLAG_NEED_RTNL,
10347         },
10348         {
10349                 .cmd = NL80211_CMD_START_AP,
10350                 .policy = nl80211_policy,
10351                 .flags = GENL_ADMIN_PERM,
10352                 .doit = nl80211_start_ap,
10353                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10354                                   NL80211_FLAG_NEED_RTNL,
10355         },
10356         {
10357                 .cmd = NL80211_CMD_STOP_AP,
10358                 .policy = nl80211_policy,
10359                 .flags = GENL_ADMIN_PERM,
10360                 .doit = nl80211_stop_ap,
10361                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10362                                   NL80211_FLAG_NEED_RTNL,
10363         },
10364         {
10365                 .cmd = NL80211_CMD_GET_STATION,
10366                 .doit = nl80211_get_station,
10367                 .dumpit = nl80211_dump_station,
10368                 .policy = nl80211_policy,
10369                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10370                                   NL80211_FLAG_NEED_RTNL,
10371         },
10372         {
10373                 .cmd = NL80211_CMD_SET_STATION,
10374                 .doit = nl80211_set_station,
10375                 .policy = nl80211_policy,
10376                 .flags = GENL_ADMIN_PERM,
10377                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10378                                   NL80211_FLAG_NEED_RTNL,
10379         },
10380         {
10381                 .cmd = NL80211_CMD_NEW_STATION,
10382                 .doit = nl80211_new_station,
10383                 .policy = nl80211_policy,
10384                 .flags = GENL_ADMIN_PERM,
10385                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10386                                   NL80211_FLAG_NEED_RTNL,
10387         },
10388         {
10389                 .cmd = NL80211_CMD_DEL_STATION,
10390                 .doit = nl80211_del_station,
10391                 .policy = nl80211_policy,
10392                 .flags = GENL_ADMIN_PERM,
10393                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10394                                   NL80211_FLAG_NEED_RTNL,
10395         },
10396         {
10397                 .cmd = NL80211_CMD_GET_MPATH,
10398                 .doit = nl80211_get_mpath,
10399                 .dumpit = nl80211_dump_mpath,
10400                 .policy = nl80211_policy,
10401                 .flags = GENL_ADMIN_PERM,
10402                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10403                                   NL80211_FLAG_NEED_RTNL,
10404         },
10405         {
10406                 .cmd = NL80211_CMD_GET_MPP,
10407                 .doit = nl80211_get_mpp,
10408                 .dumpit = nl80211_dump_mpp,
10409                 .policy = nl80211_policy,
10410                 .flags = GENL_ADMIN_PERM,
10411                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10412                                   NL80211_FLAG_NEED_RTNL,
10413         },
10414         {
10415                 .cmd = NL80211_CMD_SET_MPATH,
10416                 .doit = nl80211_set_mpath,
10417                 .policy = nl80211_policy,
10418                 .flags = GENL_ADMIN_PERM,
10419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10420                                   NL80211_FLAG_NEED_RTNL,
10421         },
10422         {
10423                 .cmd = NL80211_CMD_NEW_MPATH,
10424                 .doit = nl80211_new_mpath,
10425                 .policy = nl80211_policy,
10426                 .flags = GENL_ADMIN_PERM,
10427                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10428                                   NL80211_FLAG_NEED_RTNL,
10429         },
10430         {
10431                 .cmd = NL80211_CMD_DEL_MPATH,
10432                 .doit = nl80211_del_mpath,
10433                 .policy = nl80211_policy,
10434                 .flags = GENL_ADMIN_PERM,
10435                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10436                                   NL80211_FLAG_NEED_RTNL,
10437         },
10438         {
10439                 .cmd = NL80211_CMD_SET_BSS,
10440                 .doit = nl80211_set_bss,
10441                 .policy = nl80211_policy,
10442                 .flags = GENL_ADMIN_PERM,
10443                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10444                                   NL80211_FLAG_NEED_RTNL,
10445         },
10446         {
10447                 .cmd = NL80211_CMD_GET_REG,
10448                 .doit = nl80211_get_reg_do,
10449                 .dumpit = nl80211_get_reg_dump,
10450                 .policy = nl80211_policy,
10451                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10452                 /* can be retrieved by unprivileged users */
10453         },
10454         {
10455                 .cmd = NL80211_CMD_SET_REG,
10456                 .doit = nl80211_set_reg,
10457                 .policy = nl80211_policy,
10458                 .flags = GENL_ADMIN_PERM,
10459                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10460         },
10461         {
10462                 .cmd = NL80211_CMD_REQ_SET_REG,
10463                 .doit = nl80211_req_set_reg,
10464                 .policy = nl80211_policy,
10465                 .flags = GENL_ADMIN_PERM,
10466         },
10467         {
10468                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10469                 .doit = nl80211_get_mesh_config,
10470                 .policy = nl80211_policy,
10471                 /* can be retrieved by unprivileged users */
10472                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10473                                   NL80211_FLAG_NEED_RTNL,
10474         },
10475         {
10476                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10477                 .doit = nl80211_update_mesh_config,
10478                 .policy = nl80211_policy,
10479                 .flags = GENL_ADMIN_PERM,
10480                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10481                                   NL80211_FLAG_NEED_RTNL,
10482         },
10483         {
10484                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10485                 .doit = nl80211_trigger_scan,
10486                 .policy = nl80211_policy,
10487                 .flags = GENL_ADMIN_PERM,
10488                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10489                                   NL80211_FLAG_NEED_RTNL,
10490         },
10491         {
10492                 .cmd = NL80211_CMD_GET_SCAN,
10493                 .policy = nl80211_policy,
10494                 .dumpit = nl80211_dump_scan,
10495         },
10496         {
10497                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10498                 .doit = nl80211_start_sched_scan,
10499                 .policy = nl80211_policy,
10500                 .flags = GENL_ADMIN_PERM,
10501                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10502                                   NL80211_FLAG_NEED_RTNL,
10503         },
10504         {
10505                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10506                 .doit = nl80211_stop_sched_scan,
10507                 .policy = nl80211_policy,
10508                 .flags = GENL_ADMIN_PERM,
10509                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10510                                   NL80211_FLAG_NEED_RTNL,
10511         },
10512         {
10513                 .cmd = NL80211_CMD_AUTHENTICATE,
10514                 .doit = nl80211_authenticate,
10515                 .policy = nl80211_policy,
10516                 .flags = GENL_ADMIN_PERM,
10517                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10518                                   NL80211_FLAG_NEED_RTNL |
10519                                   NL80211_FLAG_CLEAR_SKB,
10520         },
10521         {
10522                 .cmd = NL80211_CMD_ASSOCIATE,
10523                 .doit = nl80211_associate,
10524                 .policy = nl80211_policy,
10525                 .flags = GENL_ADMIN_PERM,
10526                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10527                                   NL80211_FLAG_NEED_RTNL,
10528         },
10529         {
10530                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10531                 .doit = nl80211_deauthenticate,
10532                 .policy = nl80211_policy,
10533                 .flags = GENL_ADMIN_PERM,
10534                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10535                                   NL80211_FLAG_NEED_RTNL,
10536         },
10537         {
10538                 .cmd = NL80211_CMD_DISASSOCIATE,
10539                 .doit = nl80211_disassociate,
10540                 .policy = nl80211_policy,
10541                 .flags = GENL_ADMIN_PERM,
10542                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10543                                   NL80211_FLAG_NEED_RTNL,
10544         },
10545         {
10546                 .cmd = NL80211_CMD_JOIN_IBSS,
10547                 .doit = nl80211_join_ibss,
10548                 .policy = nl80211_policy,
10549                 .flags = GENL_ADMIN_PERM,
10550                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10551                                   NL80211_FLAG_NEED_RTNL,
10552         },
10553         {
10554                 .cmd = NL80211_CMD_LEAVE_IBSS,
10555                 .doit = nl80211_leave_ibss,
10556                 .policy = nl80211_policy,
10557                 .flags = GENL_ADMIN_PERM,
10558                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10559                                   NL80211_FLAG_NEED_RTNL,
10560         },
10561 #ifdef CONFIG_NL80211_TESTMODE
10562         {
10563                 .cmd = NL80211_CMD_TESTMODE,
10564                 .doit = nl80211_testmode_do,
10565                 .dumpit = nl80211_testmode_dump,
10566                 .policy = nl80211_policy,
10567                 .flags = GENL_ADMIN_PERM,
10568                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10569                                   NL80211_FLAG_NEED_RTNL,
10570         },
10571 #endif
10572         {
10573                 .cmd = NL80211_CMD_CONNECT,
10574                 .doit = nl80211_connect,
10575                 .policy = nl80211_policy,
10576                 .flags = GENL_ADMIN_PERM,
10577                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10578                                   NL80211_FLAG_NEED_RTNL,
10579         },
10580         {
10581                 .cmd = NL80211_CMD_DISCONNECT,
10582                 .doit = nl80211_disconnect,
10583                 .policy = nl80211_policy,
10584                 .flags = GENL_ADMIN_PERM,
10585                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10586                                   NL80211_FLAG_NEED_RTNL,
10587         },
10588         {
10589                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10590                 .doit = nl80211_wiphy_netns,
10591                 .policy = nl80211_policy,
10592                 .flags = GENL_ADMIN_PERM,
10593                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10594                                   NL80211_FLAG_NEED_RTNL,
10595         },
10596         {
10597                 .cmd = NL80211_CMD_GET_SURVEY,
10598                 .policy = nl80211_policy,
10599                 .dumpit = nl80211_dump_survey,
10600         },
10601         {
10602                 .cmd = NL80211_CMD_SET_PMKSA,
10603                 .doit = nl80211_setdel_pmksa,
10604                 .policy = nl80211_policy,
10605                 .flags = GENL_ADMIN_PERM,
10606                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10607                                   NL80211_FLAG_NEED_RTNL,
10608         },
10609         {
10610                 .cmd = NL80211_CMD_DEL_PMKSA,
10611                 .doit = nl80211_setdel_pmksa,
10612                 .policy = nl80211_policy,
10613                 .flags = GENL_ADMIN_PERM,
10614                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10615                                   NL80211_FLAG_NEED_RTNL,
10616         },
10617         {
10618                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10619                 .doit = nl80211_flush_pmksa,
10620                 .policy = nl80211_policy,
10621                 .flags = GENL_ADMIN_PERM,
10622                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10623                                   NL80211_FLAG_NEED_RTNL,
10624         },
10625         {
10626                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10627                 .doit = nl80211_remain_on_channel,
10628                 .policy = nl80211_policy,
10629                 .flags = GENL_ADMIN_PERM,
10630                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10631                                   NL80211_FLAG_NEED_RTNL,
10632         },
10633         {
10634                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10635                 .doit = nl80211_cancel_remain_on_channel,
10636                 .policy = nl80211_policy,
10637                 .flags = GENL_ADMIN_PERM,
10638                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10639                                   NL80211_FLAG_NEED_RTNL,
10640         },
10641         {
10642                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10643                 .doit = nl80211_set_tx_bitrate_mask,
10644                 .policy = nl80211_policy,
10645                 .flags = GENL_ADMIN_PERM,
10646                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10647                                   NL80211_FLAG_NEED_RTNL,
10648         },
10649         {
10650                 .cmd = NL80211_CMD_REGISTER_FRAME,
10651                 .doit = nl80211_register_mgmt,
10652                 .policy = nl80211_policy,
10653                 .flags = GENL_ADMIN_PERM,
10654                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10655                                   NL80211_FLAG_NEED_RTNL,
10656         },
10657         {
10658                 .cmd = NL80211_CMD_FRAME,
10659                 .doit = nl80211_tx_mgmt,
10660                 .policy = nl80211_policy,
10661                 .flags = GENL_ADMIN_PERM,
10662                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10663                                   NL80211_FLAG_NEED_RTNL,
10664         },
10665         {
10666                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10667                 .doit = nl80211_tx_mgmt_cancel_wait,
10668                 .policy = nl80211_policy,
10669                 .flags = GENL_ADMIN_PERM,
10670                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10671                                   NL80211_FLAG_NEED_RTNL,
10672         },
10673         {
10674                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10675                 .doit = nl80211_set_power_save,
10676                 .policy = nl80211_policy,
10677                 .flags = GENL_ADMIN_PERM,
10678                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10679                                   NL80211_FLAG_NEED_RTNL,
10680         },
10681         {
10682                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10683                 .doit = nl80211_get_power_save,
10684                 .policy = nl80211_policy,
10685                 /* can be retrieved by unprivileged users */
10686                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10687                                   NL80211_FLAG_NEED_RTNL,
10688         },
10689         {
10690                 .cmd = NL80211_CMD_SET_CQM,
10691                 .doit = nl80211_set_cqm,
10692                 .policy = nl80211_policy,
10693                 .flags = GENL_ADMIN_PERM,
10694                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10695                                   NL80211_FLAG_NEED_RTNL,
10696         },
10697         {
10698                 .cmd = NL80211_CMD_SET_CHANNEL,
10699                 .doit = nl80211_set_channel,
10700                 .policy = nl80211_policy,
10701                 .flags = GENL_ADMIN_PERM,
10702                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10703                                   NL80211_FLAG_NEED_RTNL,
10704         },
10705         {
10706                 .cmd = NL80211_CMD_SET_WDS_PEER,
10707                 .doit = nl80211_set_wds_peer,
10708                 .policy = nl80211_policy,
10709                 .flags = GENL_ADMIN_PERM,
10710                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10711                                   NL80211_FLAG_NEED_RTNL,
10712         },
10713         {
10714                 .cmd = NL80211_CMD_JOIN_MESH,
10715                 .doit = nl80211_join_mesh,
10716                 .policy = nl80211_policy,
10717                 .flags = GENL_ADMIN_PERM,
10718                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10719                                   NL80211_FLAG_NEED_RTNL,
10720         },
10721         {
10722                 .cmd = NL80211_CMD_LEAVE_MESH,
10723                 .doit = nl80211_leave_mesh,
10724                 .policy = nl80211_policy,
10725                 .flags = GENL_ADMIN_PERM,
10726                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10727                                   NL80211_FLAG_NEED_RTNL,
10728         },
10729         {
10730                 .cmd = NL80211_CMD_JOIN_OCB,
10731                 .doit = nl80211_join_ocb,
10732                 .policy = nl80211_policy,
10733                 .flags = GENL_ADMIN_PERM,
10734                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10735                                   NL80211_FLAG_NEED_RTNL,
10736         },
10737         {
10738                 .cmd = NL80211_CMD_LEAVE_OCB,
10739                 .doit = nl80211_leave_ocb,
10740                 .policy = nl80211_policy,
10741                 .flags = GENL_ADMIN_PERM,
10742                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10743                                   NL80211_FLAG_NEED_RTNL,
10744         },
10745 #ifdef CONFIG_PM
10746         {
10747                 .cmd = NL80211_CMD_GET_WOWLAN,
10748                 .doit = nl80211_get_wowlan,
10749                 .policy = nl80211_policy,
10750                 /* can be retrieved by unprivileged users */
10751                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10752                                   NL80211_FLAG_NEED_RTNL,
10753         },
10754         {
10755                 .cmd = NL80211_CMD_SET_WOWLAN,
10756                 .doit = nl80211_set_wowlan,
10757                 .policy = nl80211_policy,
10758                 .flags = GENL_ADMIN_PERM,
10759                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10760                                   NL80211_FLAG_NEED_RTNL,
10761         },
10762 #endif
10763         {
10764                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10765                 .doit = nl80211_set_rekey_data,
10766                 .policy = nl80211_policy,
10767                 .flags = GENL_ADMIN_PERM,
10768                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10769                                   NL80211_FLAG_NEED_RTNL |
10770                                   NL80211_FLAG_CLEAR_SKB,
10771         },
10772         {
10773                 .cmd = NL80211_CMD_TDLS_MGMT,
10774                 .doit = nl80211_tdls_mgmt,
10775                 .policy = nl80211_policy,
10776                 .flags = GENL_ADMIN_PERM,
10777                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10778                                   NL80211_FLAG_NEED_RTNL,
10779         },
10780         {
10781                 .cmd = NL80211_CMD_TDLS_OPER,
10782                 .doit = nl80211_tdls_oper,
10783                 .policy = nl80211_policy,
10784                 .flags = GENL_ADMIN_PERM,
10785                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10786                                   NL80211_FLAG_NEED_RTNL,
10787         },
10788         {
10789                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10790                 .doit = nl80211_register_unexpected_frame,
10791                 .policy = nl80211_policy,
10792                 .flags = GENL_ADMIN_PERM,
10793                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10794                                   NL80211_FLAG_NEED_RTNL,
10795         },
10796         {
10797                 .cmd = NL80211_CMD_PROBE_CLIENT,
10798                 .doit = nl80211_probe_client,
10799                 .policy = nl80211_policy,
10800                 .flags = GENL_ADMIN_PERM,
10801                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10802                                   NL80211_FLAG_NEED_RTNL,
10803         },
10804         {
10805                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10806                 .doit = nl80211_register_beacons,
10807                 .policy = nl80211_policy,
10808                 .flags = GENL_ADMIN_PERM,
10809                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10810                                   NL80211_FLAG_NEED_RTNL,
10811         },
10812         {
10813                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10814                 .doit = nl80211_set_noack_map,
10815                 .policy = nl80211_policy,
10816                 .flags = GENL_ADMIN_PERM,
10817                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10818                                   NL80211_FLAG_NEED_RTNL,
10819         },
10820         {
10821                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10822                 .doit = nl80211_start_p2p_device,
10823                 .policy = nl80211_policy,
10824                 .flags = GENL_ADMIN_PERM,
10825                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10826                                   NL80211_FLAG_NEED_RTNL,
10827         },
10828         {
10829                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10830                 .doit = nl80211_stop_p2p_device,
10831                 .policy = nl80211_policy,
10832                 .flags = GENL_ADMIN_PERM,
10833                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10834                                   NL80211_FLAG_NEED_RTNL,
10835         },
10836         {
10837                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10838                 .doit = nl80211_set_mcast_rate,
10839                 .policy = nl80211_policy,
10840                 .flags = GENL_ADMIN_PERM,
10841                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10842                                   NL80211_FLAG_NEED_RTNL,
10843         },
10844         {
10845                 .cmd = NL80211_CMD_SET_MAC_ACL,
10846                 .doit = nl80211_set_mac_acl,
10847                 .policy = nl80211_policy,
10848                 .flags = GENL_ADMIN_PERM,
10849                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10850                                   NL80211_FLAG_NEED_RTNL,
10851         },
10852         {
10853                 .cmd = NL80211_CMD_RADAR_DETECT,
10854                 .doit = nl80211_start_radar_detection,
10855                 .policy = nl80211_policy,
10856                 .flags = GENL_ADMIN_PERM,
10857                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10858                                   NL80211_FLAG_NEED_RTNL,
10859         },
10860         {
10861                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10862                 .doit = nl80211_get_protocol_features,
10863                 .policy = nl80211_policy,
10864         },
10865         {
10866                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10867                 .doit = nl80211_update_ft_ies,
10868                 .policy = nl80211_policy,
10869                 .flags = GENL_ADMIN_PERM,
10870                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10871                                   NL80211_FLAG_NEED_RTNL,
10872         },
10873         {
10874                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10875                 .doit = nl80211_crit_protocol_start,
10876                 .policy = nl80211_policy,
10877                 .flags = GENL_ADMIN_PERM,
10878                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10879                                   NL80211_FLAG_NEED_RTNL,
10880         },
10881         {
10882                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10883                 .doit = nl80211_crit_protocol_stop,
10884                 .policy = nl80211_policy,
10885                 .flags = GENL_ADMIN_PERM,
10886                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10887                                   NL80211_FLAG_NEED_RTNL,
10888         },
10889         {
10890                 .cmd = NL80211_CMD_GET_COALESCE,
10891                 .doit = nl80211_get_coalesce,
10892                 .policy = nl80211_policy,
10893                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10894                                   NL80211_FLAG_NEED_RTNL,
10895         },
10896         {
10897                 .cmd = NL80211_CMD_SET_COALESCE,
10898                 .doit = nl80211_set_coalesce,
10899                 .policy = nl80211_policy,
10900                 .flags = GENL_ADMIN_PERM,
10901                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10902                                   NL80211_FLAG_NEED_RTNL,
10903         },
10904         {
10905                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10906                 .doit = nl80211_channel_switch,
10907                 .policy = nl80211_policy,
10908                 .flags = GENL_ADMIN_PERM,
10909                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10910                                   NL80211_FLAG_NEED_RTNL,
10911         },
10912         {
10913                 .cmd = NL80211_CMD_VENDOR,
10914                 .doit = nl80211_vendor_cmd,
10915                 .policy = nl80211_policy,
10916                 .flags = GENL_ADMIN_PERM,
10917                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10918                                   NL80211_FLAG_NEED_RTNL,
10919         },
10920         {
10921                 .cmd = NL80211_CMD_SET_QOS_MAP,
10922                 .doit = nl80211_set_qos_map,
10923                 .policy = nl80211_policy,
10924                 .flags = GENL_ADMIN_PERM,
10925                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10926                                   NL80211_FLAG_NEED_RTNL,
10927         },
10928         {
10929                 .cmd = NL80211_CMD_ADD_TX_TS,
10930                 .doit = nl80211_add_tx_ts,
10931                 .policy = nl80211_policy,
10932                 .flags = GENL_ADMIN_PERM,
10933                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10934                                   NL80211_FLAG_NEED_RTNL,
10935         },
10936         {
10937                 .cmd = NL80211_CMD_DEL_TX_TS,
10938                 .doit = nl80211_del_tx_ts,
10939                 .policy = nl80211_policy,
10940                 .flags = GENL_ADMIN_PERM,
10941                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10942                                   NL80211_FLAG_NEED_RTNL,
10943         },
10944         {
10945                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10946                 .doit = nl80211_tdls_channel_switch,
10947                 .policy = nl80211_policy,
10948                 .flags = GENL_ADMIN_PERM,
10949                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10950                                   NL80211_FLAG_NEED_RTNL,
10951         },
10952         {
10953                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10954                 .doit = nl80211_tdls_cancel_channel_switch,
10955                 .policy = nl80211_policy,
10956                 .flags = GENL_ADMIN_PERM,
10957                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10958                                   NL80211_FLAG_NEED_RTNL,
10959         },
10960 };
10961
10962 /* notification functions */
10963
10964 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10965                           enum nl80211_commands cmd)
10966 {
10967         struct sk_buff *msg;
10968         struct nl80211_dump_wiphy_state state = {};
10969
10970         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10971                 cmd != NL80211_CMD_DEL_WIPHY);
10972
10973         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10974         if (!msg)
10975                 return;
10976
10977         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10978                 nlmsg_free(msg);
10979                 return;
10980         }
10981
10982         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10983                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10984 }
10985
10986 static int nl80211_add_scan_req(struct sk_buff *msg,
10987                                 struct cfg80211_registered_device *rdev)
10988 {
10989         struct cfg80211_scan_request *req = rdev->scan_req;
10990         struct nlattr *nest;
10991         int i;
10992
10993         if (WARN_ON(!req))
10994                 return 0;
10995
10996         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10997         if (!nest)
10998                 goto nla_put_failure;
10999         for (i = 0; i < req->n_ssids; i++) {
11000                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11001                         goto nla_put_failure;
11002         }
11003         nla_nest_end(msg, nest);
11004
11005         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11006         if (!nest)
11007                 goto nla_put_failure;
11008         for (i = 0; i < req->n_channels; i++) {
11009                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11010                         goto nla_put_failure;
11011         }
11012         nla_nest_end(msg, nest);
11013
11014         if (req->ie &&
11015             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11016                 goto nla_put_failure;
11017
11018         if (req->flags &&
11019             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11020                 goto nla_put_failure;
11021
11022         return 0;
11023  nla_put_failure:
11024         return -ENOBUFS;
11025 }
11026
11027 static int nl80211_send_scan_msg(struct sk_buff *msg,
11028                                  struct cfg80211_registered_device *rdev,
11029                                  struct wireless_dev *wdev,
11030                                  u32 portid, u32 seq, int flags,
11031                                  u32 cmd)
11032 {
11033         void *hdr;
11034
11035         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11036         if (!hdr)
11037                 return -1;
11038
11039         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11040             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11041                                          wdev->netdev->ifindex)) ||
11042             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11043                 goto nla_put_failure;
11044
11045         /* ignore errors and send incomplete event anyway */
11046         nl80211_add_scan_req(msg, rdev);
11047
11048         genlmsg_end(msg, hdr);
11049         return 0;
11050
11051  nla_put_failure:
11052         genlmsg_cancel(msg, hdr);
11053         return -EMSGSIZE;
11054 }
11055
11056 static int
11057 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11058                             struct cfg80211_registered_device *rdev,
11059                             struct net_device *netdev,
11060                             u32 portid, u32 seq, int flags, u32 cmd)
11061 {
11062         void *hdr;
11063
11064         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11065         if (!hdr)
11066                 return -1;
11067
11068         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11069             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11070                 goto nla_put_failure;
11071
11072         genlmsg_end(msg, hdr);
11073         return 0;
11074
11075  nla_put_failure:
11076         genlmsg_cancel(msg, hdr);
11077         return -EMSGSIZE;
11078 }
11079
11080 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11081                              struct wireless_dev *wdev)
11082 {
11083         struct sk_buff *msg;
11084
11085         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11086         if (!msg)
11087                 return;
11088
11089         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11090                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11091                 nlmsg_free(msg);
11092                 return;
11093         }
11094
11095         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11096                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11097 }
11098
11099 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11100                                        struct wireless_dev *wdev, bool aborted)
11101 {
11102         struct sk_buff *msg;
11103
11104         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11105         if (!msg)
11106                 return NULL;
11107
11108         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11109                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11110                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11111                 nlmsg_free(msg);
11112                 return NULL;
11113         }
11114
11115         return msg;
11116 }
11117
11118 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11119                               struct sk_buff *msg)
11120 {
11121         if (!msg)
11122                 return;
11123
11124         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11125                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11126 }
11127
11128 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11129                                      struct net_device *netdev)
11130 {
11131         struct sk_buff *msg;
11132
11133         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11134         if (!msg)
11135                 return;
11136
11137         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11138                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11139                 nlmsg_free(msg);
11140                 return;
11141         }
11142
11143         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11144                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11145 }
11146
11147 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11148                              struct net_device *netdev, u32 cmd)
11149 {
11150         struct sk_buff *msg;
11151
11152         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11153         if (!msg)
11154                 return;
11155
11156         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11157                 nlmsg_free(msg);
11158                 return;
11159         }
11160
11161         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11162                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11163 }
11164
11165 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11166                                           struct regulatory_request *request)
11167 {
11168         /* Userspace can always count this one always being set */
11169         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11170                 goto nla_put_failure;
11171
11172         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11173                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11174                                NL80211_REGDOM_TYPE_WORLD))
11175                         goto nla_put_failure;
11176         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11177                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11178                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11179                         goto nla_put_failure;
11180         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11181                    request->intersect) {
11182                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11183                                NL80211_REGDOM_TYPE_INTERSECTION))
11184                         goto nla_put_failure;
11185         } else {
11186                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11187                                NL80211_REGDOM_TYPE_COUNTRY) ||
11188                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11189                                    request->alpha2))
11190                         goto nla_put_failure;
11191         }
11192
11193         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11194                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11195
11196                 if (wiphy &&
11197                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11198                         goto nla_put_failure;
11199
11200                 if (wiphy &&
11201                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11202                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11203                         goto nla_put_failure;
11204         }
11205
11206         return true;
11207
11208 nla_put_failure:
11209         return false;
11210 }
11211
11212 /*
11213  * This can happen on global regulatory changes or device specific settings
11214  * based on custom regulatory domains.
11215  */
11216 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11217                                      struct regulatory_request *request)
11218 {
11219         struct sk_buff *msg;
11220         void *hdr;
11221
11222         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11223         if (!msg)
11224                 return;
11225
11226         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11227         if (!hdr) {
11228                 nlmsg_free(msg);
11229                 return;
11230         }
11231
11232         if (nl80211_reg_change_event_fill(msg, request) == false)
11233                 goto nla_put_failure;
11234
11235         genlmsg_end(msg, hdr);
11236
11237         rcu_read_lock();
11238         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11239                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11240         rcu_read_unlock();
11241
11242         return;
11243
11244 nla_put_failure:
11245         genlmsg_cancel(msg, hdr);
11246         nlmsg_free(msg);
11247 }
11248
11249 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11250                                     struct net_device *netdev,
11251                                     const u8 *buf, size_t len,
11252                                     enum nl80211_commands cmd, gfp_t gfp,
11253                                     int uapsd_queues)
11254 {
11255         struct sk_buff *msg;
11256         void *hdr;
11257
11258         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11259         if (!msg)
11260                 return;
11261
11262         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11263         if (!hdr) {
11264                 nlmsg_free(msg);
11265                 return;
11266         }
11267
11268         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11269             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11270             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11271                 goto nla_put_failure;
11272
11273         if (uapsd_queues >= 0) {
11274                 struct nlattr *nla_wmm =
11275                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11276                 if (!nla_wmm)
11277                         goto nla_put_failure;
11278
11279                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11280                                uapsd_queues))
11281                         goto nla_put_failure;
11282
11283                 nla_nest_end(msg, nla_wmm);
11284         }
11285
11286         genlmsg_end(msg, hdr);
11287
11288         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11289                                 NL80211_MCGRP_MLME, gfp);
11290         return;
11291
11292  nla_put_failure:
11293         genlmsg_cancel(msg, hdr);
11294         nlmsg_free(msg);
11295 }
11296
11297 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11298                           struct net_device *netdev, const u8 *buf,
11299                           size_t len, gfp_t gfp)
11300 {
11301         nl80211_send_mlme_event(rdev, netdev, buf, len,
11302                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11303 }
11304
11305 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11306                            struct net_device *netdev, const u8 *buf,
11307                            size_t len, gfp_t gfp, int uapsd_queues)
11308 {
11309         nl80211_send_mlme_event(rdev, netdev, buf, len,
11310                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11311 }
11312
11313 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11314                          struct net_device *netdev, const u8 *buf,
11315                          size_t len, gfp_t gfp)
11316 {
11317         nl80211_send_mlme_event(rdev, netdev, buf, len,
11318                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11319 }
11320
11321 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11322                            struct net_device *netdev, const u8 *buf,
11323                            size_t len, gfp_t gfp)
11324 {
11325         nl80211_send_mlme_event(rdev, netdev, buf, len,
11326                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11327 }
11328
11329 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11330                                   size_t len)
11331 {
11332         struct wireless_dev *wdev = dev->ieee80211_ptr;
11333         struct wiphy *wiphy = wdev->wiphy;
11334         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11335         const struct ieee80211_mgmt *mgmt = (void *)buf;
11336         u32 cmd;
11337
11338         if (WARN_ON(len < 2))
11339                 return;
11340
11341         if (ieee80211_is_deauth(mgmt->frame_control))
11342                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11343         else
11344                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11345
11346         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11347         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11348 }
11349 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11350
11351 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11352                                       struct net_device *netdev, int cmd,
11353                                       const u8 *addr, gfp_t gfp)
11354 {
11355         struct sk_buff *msg;
11356         void *hdr;
11357
11358         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11359         if (!msg)
11360                 return;
11361
11362         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11363         if (!hdr) {
11364                 nlmsg_free(msg);
11365                 return;
11366         }
11367
11368         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11369             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11370             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11371             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11372                 goto nla_put_failure;
11373
11374         genlmsg_end(msg, hdr);
11375
11376         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11377                                 NL80211_MCGRP_MLME, gfp);
11378         return;
11379
11380  nla_put_failure:
11381         genlmsg_cancel(msg, hdr);
11382         nlmsg_free(msg);
11383 }
11384
11385 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11386                                struct net_device *netdev, const u8 *addr,
11387                                gfp_t gfp)
11388 {
11389         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11390                                   addr, gfp);
11391 }
11392
11393 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11394                                 struct net_device *netdev, const u8 *addr,
11395                                 gfp_t gfp)
11396 {
11397         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11398                                   addr, gfp);
11399 }
11400
11401 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11402                                  struct net_device *netdev, const u8 *bssid,
11403                                  const u8 *req_ie, size_t req_ie_len,
11404                                  const u8 *resp_ie, size_t resp_ie_len,
11405                                  u16 status, gfp_t gfp)
11406 {
11407         struct sk_buff *msg;
11408         void *hdr;
11409
11410         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11411         if (!msg)
11412                 return;
11413
11414         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11415         if (!hdr) {
11416                 nlmsg_free(msg);
11417                 return;
11418         }
11419
11420         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11421             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11422             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11423             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11424             (req_ie &&
11425              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11426             (resp_ie &&
11427              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11428                 goto nla_put_failure;
11429
11430         genlmsg_end(msg, hdr);
11431
11432         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11433                                 NL80211_MCGRP_MLME, gfp);
11434         return;
11435
11436  nla_put_failure:
11437         genlmsg_cancel(msg, hdr);
11438         nlmsg_free(msg);
11439
11440 }
11441
11442 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11443                          struct net_device *netdev, const u8 *bssid,
11444                          const u8 *req_ie, size_t req_ie_len,
11445                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11446 {
11447         struct sk_buff *msg;
11448         void *hdr;
11449
11450         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11451         if (!msg)
11452                 return;
11453
11454         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11455         if (!hdr) {
11456                 nlmsg_free(msg);
11457                 return;
11458         }
11459
11460         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11461             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11462             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11463             (req_ie &&
11464              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11465             (resp_ie &&
11466              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11467                 goto nla_put_failure;
11468
11469         genlmsg_end(msg, hdr);
11470
11471         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11472                                 NL80211_MCGRP_MLME, gfp);
11473         return;
11474
11475  nla_put_failure:
11476         genlmsg_cancel(msg, hdr);
11477         nlmsg_free(msg);
11478
11479 }
11480
11481 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11482                                struct net_device *netdev, u16 reason,
11483                                const u8 *ie, size_t ie_len, bool from_ap)
11484 {
11485         struct sk_buff *msg;
11486         void *hdr;
11487
11488         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11489         if (!msg)
11490                 return;
11491
11492         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11493         if (!hdr) {
11494                 nlmsg_free(msg);
11495                 return;
11496         }
11497
11498         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11499             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11500             (from_ap && reason &&
11501              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11502             (from_ap &&
11503              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11504             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11505                 goto nla_put_failure;
11506
11507         genlmsg_end(msg, hdr);
11508
11509         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11510                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11511         return;
11512
11513  nla_put_failure:
11514         genlmsg_cancel(msg, hdr);
11515         nlmsg_free(msg);
11516
11517 }
11518
11519 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11520                              struct net_device *netdev, const u8 *bssid,
11521                              gfp_t gfp)
11522 {
11523         struct sk_buff *msg;
11524         void *hdr;
11525
11526         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11527         if (!msg)
11528                 return;
11529
11530         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11531         if (!hdr) {
11532                 nlmsg_free(msg);
11533                 return;
11534         }
11535
11536         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11537             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11538             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11539                 goto nla_put_failure;
11540
11541         genlmsg_end(msg, hdr);
11542
11543         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11544                                 NL80211_MCGRP_MLME, gfp);
11545         return;
11546
11547  nla_put_failure:
11548         genlmsg_cancel(msg, hdr);
11549         nlmsg_free(msg);
11550 }
11551
11552 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11553                                         const u8* ie, u8 ie_len, gfp_t gfp)
11554 {
11555         struct wireless_dev *wdev = dev->ieee80211_ptr;
11556         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11557         struct sk_buff *msg;
11558         void *hdr;
11559
11560         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11561                 return;
11562
11563         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11564
11565         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11566         if (!msg)
11567                 return;
11568
11569         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11570         if (!hdr) {
11571                 nlmsg_free(msg);
11572                 return;
11573         }
11574
11575         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11576             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11577             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11578             (ie_len && ie &&
11579              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11580                 goto nla_put_failure;
11581
11582         genlmsg_end(msg, hdr);
11583
11584         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11585                                 NL80211_MCGRP_MLME, gfp);
11586         return;
11587
11588  nla_put_failure:
11589         genlmsg_cancel(msg, hdr);
11590         nlmsg_free(msg);
11591 }
11592 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11593
11594 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11595                                  struct net_device *netdev, const u8 *addr,
11596                                  enum nl80211_key_type key_type, int key_id,
11597                                  const u8 *tsc, gfp_t gfp)
11598 {
11599         struct sk_buff *msg;
11600         void *hdr;
11601
11602         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11603         if (!msg)
11604                 return;
11605
11606         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11607         if (!hdr) {
11608                 nlmsg_free(msg);
11609                 return;
11610         }
11611
11612         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11613             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11614             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11615             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11616             (key_id != -1 &&
11617              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11618             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11619                 goto nla_put_failure;
11620
11621         genlmsg_end(msg, hdr);
11622
11623         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11624                                 NL80211_MCGRP_MLME, gfp);
11625         return;
11626
11627  nla_put_failure:
11628         genlmsg_cancel(msg, hdr);
11629         nlmsg_free(msg);
11630 }
11631
11632 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11633                                     struct ieee80211_channel *channel_before,
11634                                     struct ieee80211_channel *channel_after)
11635 {
11636         struct sk_buff *msg;
11637         void *hdr;
11638         struct nlattr *nl_freq;
11639
11640         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11641         if (!msg)
11642                 return;
11643
11644         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11645         if (!hdr) {
11646                 nlmsg_free(msg);
11647                 return;
11648         }
11649
11650         /*
11651          * Since we are applying the beacon hint to a wiphy we know its
11652          * wiphy_idx is valid
11653          */
11654         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11655                 goto nla_put_failure;
11656
11657         /* Before */
11658         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11659         if (!nl_freq)
11660                 goto nla_put_failure;
11661         if (nl80211_msg_put_channel(msg, channel_before, false))
11662                 goto nla_put_failure;
11663         nla_nest_end(msg, nl_freq);
11664
11665         /* After */
11666         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11667         if (!nl_freq)
11668                 goto nla_put_failure;
11669         if (nl80211_msg_put_channel(msg, channel_after, false))
11670                 goto nla_put_failure;
11671         nla_nest_end(msg, nl_freq);
11672
11673         genlmsg_end(msg, hdr);
11674
11675         rcu_read_lock();
11676         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11677                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11678         rcu_read_unlock();
11679
11680         return;
11681
11682 nla_put_failure:
11683         genlmsg_cancel(msg, hdr);
11684         nlmsg_free(msg);
11685 }
11686
11687 static void nl80211_send_remain_on_chan_event(
11688         int cmd, struct cfg80211_registered_device *rdev,
11689         struct wireless_dev *wdev, u64 cookie,
11690         struct ieee80211_channel *chan,
11691         unsigned int duration, gfp_t gfp)
11692 {
11693         struct sk_buff *msg;
11694         void *hdr;
11695
11696         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11697         if (!msg)
11698                 return;
11699
11700         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11701         if (!hdr) {
11702                 nlmsg_free(msg);
11703                 return;
11704         }
11705
11706         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11707             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11708                                          wdev->netdev->ifindex)) ||
11709             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11710             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11711             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11712                         NL80211_CHAN_NO_HT) ||
11713             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11714                 goto nla_put_failure;
11715
11716         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11717             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11718                 goto nla_put_failure;
11719
11720         genlmsg_end(msg, hdr);
11721
11722         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11723                                 NL80211_MCGRP_MLME, gfp);
11724         return;
11725
11726  nla_put_failure:
11727         genlmsg_cancel(msg, hdr);
11728         nlmsg_free(msg);
11729 }
11730
11731 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11732                                struct ieee80211_channel *chan,
11733                                unsigned int duration, gfp_t gfp)
11734 {
11735         struct wiphy *wiphy = wdev->wiphy;
11736         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11737
11738         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11739         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11740                                           rdev, wdev, cookie, chan,
11741                                           duration, gfp);
11742 }
11743 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11744
11745 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11746                                         struct ieee80211_channel *chan,
11747                                         gfp_t gfp)
11748 {
11749         struct wiphy *wiphy = wdev->wiphy;
11750         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11751
11752         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11753         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11754                                           rdev, wdev, cookie, chan, 0, gfp);
11755 }
11756 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11757
11758 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11759                       struct station_info *sinfo, gfp_t gfp)
11760 {
11761         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11762         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11763         struct sk_buff *msg;
11764
11765         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11766
11767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11768         if (!msg)
11769                 return;
11770
11771         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11772                                  rdev, dev, mac_addr, sinfo) < 0) {
11773                 nlmsg_free(msg);
11774                 return;
11775         }
11776
11777         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11778                                 NL80211_MCGRP_MLME, gfp);
11779 }
11780 EXPORT_SYMBOL(cfg80211_new_sta);
11781
11782 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11783                             struct station_info *sinfo, gfp_t gfp)
11784 {
11785         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11786         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11787         struct sk_buff *msg;
11788         struct station_info empty_sinfo = {};
11789
11790         if (!sinfo)
11791                 sinfo = &empty_sinfo;
11792
11793         trace_cfg80211_del_sta(dev, mac_addr);
11794
11795         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11796         if (!msg)
11797                 return;
11798
11799         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11800                                  rdev, dev, mac_addr, sinfo) < 0) {
11801                 nlmsg_free(msg);
11802                 return;
11803         }
11804
11805         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11806                                 NL80211_MCGRP_MLME, gfp);
11807 }
11808 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11809
11810 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11811                           enum nl80211_connect_failed_reason reason,
11812                           gfp_t gfp)
11813 {
11814         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11815         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11816         struct sk_buff *msg;
11817         void *hdr;
11818
11819         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11820         if (!msg)
11821                 return;
11822
11823         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11824         if (!hdr) {
11825                 nlmsg_free(msg);
11826                 return;
11827         }
11828
11829         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11830             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11831             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11832                 goto nla_put_failure;
11833
11834         genlmsg_end(msg, hdr);
11835
11836         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11837                                 NL80211_MCGRP_MLME, gfp);
11838         return;
11839
11840  nla_put_failure:
11841         genlmsg_cancel(msg, hdr);
11842         nlmsg_free(msg);
11843 }
11844 EXPORT_SYMBOL(cfg80211_conn_failed);
11845
11846 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11847                                        const u8 *addr, gfp_t gfp)
11848 {
11849         struct wireless_dev *wdev = dev->ieee80211_ptr;
11850         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11851         struct sk_buff *msg;
11852         void *hdr;
11853         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11854
11855         if (!nlportid)
11856                 return false;
11857
11858         msg = nlmsg_new(100, gfp);
11859         if (!msg)
11860                 return true;
11861
11862         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11863         if (!hdr) {
11864                 nlmsg_free(msg);
11865                 return true;
11866         }
11867
11868         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11869             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11870             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11871                 goto nla_put_failure;
11872
11873         genlmsg_end(msg, hdr);
11874         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11875         return true;
11876
11877  nla_put_failure:
11878         genlmsg_cancel(msg, hdr);
11879         nlmsg_free(msg);
11880         return true;
11881 }
11882
11883 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11884                                 const u8 *addr, gfp_t gfp)
11885 {
11886         struct wireless_dev *wdev = dev->ieee80211_ptr;
11887         bool ret;
11888
11889         trace_cfg80211_rx_spurious_frame(dev, addr);
11890
11891         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11892                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11893                 trace_cfg80211_return_bool(false);
11894                 return false;
11895         }
11896         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11897                                          addr, gfp);
11898         trace_cfg80211_return_bool(ret);
11899         return ret;
11900 }
11901 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11902
11903 bool cfg80211_rx_unexpected_4addr_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_unexpected_4addr_frame(dev, addr);
11910
11911         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11912                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11913                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11914                 trace_cfg80211_return_bool(false);
11915                 return false;
11916         }
11917         ret = __nl80211_unexpected_frame(dev,
11918                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11919                                          addr, gfp);
11920         trace_cfg80211_return_bool(ret);
11921         return ret;
11922 }
11923 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11924
11925 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11926                       struct wireless_dev *wdev, u32 nlportid,
11927                       int freq, int sig_dbm,
11928                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11929 {
11930         struct net_device *netdev = wdev->netdev;
11931         struct sk_buff *msg;
11932         void *hdr;
11933
11934         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11935         if (!msg)
11936                 return -ENOMEM;
11937
11938         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11939         if (!hdr) {
11940                 nlmsg_free(msg);
11941                 return -ENOMEM;
11942         }
11943
11944         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11945             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11946                                         netdev->ifindex)) ||
11947             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11948             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11949             (sig_dbm &&
11950              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11951             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11952             (flags &&
11953              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11954                 goto nla_put_failure;
11955
11956         genlmsg_end(msg, hdr);
11957
11958         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11959
11960  nla_put_failure:
11961         genlmsg_cancel(msg, hdr);
11962         nlmsg_free(msg);
11963         return -ENOBUFS;
11964 }
11965
11966 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11967                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11968 {
11969         struct wiphy *wiphy = wdev->wiphy;
11970         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11971         struct net_device *netdev = wdev->netdev;
11972         struct sk_buff *msg;
11973         void *hdr;
11974
11975         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11976
11977         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11978         if (!msg)
11979                 return;
11980
11981         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11982         if (!hdr) {
11983                 nlmsg_free(msg);
11984                 return;
11985         }
11986
11987         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11988             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11989                                    netdev->ifindex)) ||
11990             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11991             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11992             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11993             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11994                 goto nla_put_failure;
11995
11996         genlmsg_end(msg, hdr);
11997
11998         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11999                                 NL80211_MCGRP_MLME, gfp);
12000         return;
12001
12002  nla_put_failure:
12003         genlmsg_cancel(msg, hdr);
12004         nlmsg_free(msg);
12005 }
12006 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12007
12008 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12009                                             const char *mac, gfp_t gfp)
12010 {
12011         struct wireless_dev *wdev = dev->ieee80211_ptr;
12012         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12013         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12014         void **cb;
12015
12016         if (!msg)
12017                 return NULL;
12018
12019         cb = (void **)msg->cb;
12020
12021         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12022         if (!cb[0]) {
12023                 nlmsg_free(msg);
12024                 return NULL;
12025         }
12026
12027         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12028             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12029                 goto nla_put_failure;
12030
12031         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12032                 goto nla_put_failure;
12033
12034         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12035         if (!cb[1])
12036                 goto nla_put_failure;
12037
12038         cb[2] = rdev;
12039
12040         return msg;
12041  nla_put_failure:
12042         nlmsg_free(msg);
12043         return NULL;
12044 }
12045
12046 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12047 {
12048         void **cb = (void **)msg->cb;
12049         struct cfg80211_registered_device *rdev = cb[2];
12050
12051         nla_nest_end(msg, cb[1]);
12052         genlmsg_end(msg, cb[0]);
12053
12054         memset(msg->cb, 0, sizeof(msg->cb));
12055
12056         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12057                                 NL80211_MCGRP_MLME, gfp);
12058 }
12059
12060 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12061                               enum nl80211_cqm_rssi_threshold_event rssi_event,
12062                               gfp_t gfp)
12063 {
12064         struct sk_buff *msg;
12065
12066         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12067
12068         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12069                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12070                 return;
12071
12072         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12073         if (!msg)
12074                 return;
12075
12076         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12077                         rssi_event))
12078                 goto nla_put_failure;
12079
12080         cfg80211_send_cqm(msg, gfp);
12081
12082         return;
12083
12084  nla_put_failure:
12085         nlmsg_free(msg);
12086 }
12087 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12088
12089 void cfg80211_cqm_txe_notify(struct net_device *dev,
12090                              const u8 *peer, u32 num_packets,
12091                              u32 rate, u32 intvl, gfp_t gfp)
12092 {
12093         struct sk_buff *msg;
12094
12095         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12096         if (!msg)
12097                 return;
12098
12099         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12100                 goto nla_put_failure;
12101
12102         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12103                 goto nla_put_failure;
12104
12105         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12106                 goto nla_put_failure;
12107
12108         cfg80211_send_cqm(msg, gfp);
12109         return;
12110
12111  nla_put_failure:
12112         nlmsg_free(msg);
12113 }
12114 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12115
12116 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12117                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12118 {
12119         struct sk_buff *msg;
12120
12121         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12122
12123         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12124         if (!msg)
12125                 return;
12126
12127         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12128                 goto nla_put_failure;
12129
12130         cfg80211_send_cqm(msg, gfp);
12131         return;
12132
12133  nla_put_failure:
12134         nlmsg_free(msg);
12135 }
12136 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12137
12138 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12139 {
12140         struct sk_buff *msg;
12141
12142         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12143         if (!msg)
12144                 return;
12145
12146         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12147                 goto nla_put_failure;
12148
12149         cfg80211_send_cqm(msg, gfp);
12150         return;
12151
12152  nla_put_failure:
12153         nlmsg_free(msg);
12154 }
12155 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12156
12157 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12158                                      struct net_device *netdev, const u8 *bssid,
12159                                      const u8 *replay_ctr, gfp_t gfp)
12160 {
12161         struct sk_buff *msg;
12162         struct nlattr *rekey_attr;
12163         void *hdr;
12164
12165         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12166         if (!msg)
12167                 return;
12168
12169         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12170         if (!hdr) {
12171                 nlmsg_free(msg);
12172                 return;
12173         }
12174
12175         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12176             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12177             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12178                 goto nla_put_failure;
12179
12180         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12181         if (!rekey_attr)
12182                 goto nla_put_failure;
12183
12184         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12185                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12186                 goto nla_put_failure;
12187
12188         nla_nest_end(msg, rekey_attr);
12189
12190         genlmsg_end(msg, hdr);
12191
12192         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12193                                 NL80211_MCGRP_MLME, gfp);
12194         return;
12195
12196  nla_put_failure:
12197         genlmsg_cancel(msg, hdr);
12198         nlmsg_free(msg);
12199 }
12200
12201 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12202                                const u8 *replay_ctr, gfp_t gfp)
12203 {
12204         struct wireless_dev *wdev = dev->ieee80211_ptr;
12205         struct wiphy *wiphy = wdev->wiphy;
12206         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12207
12208         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12209         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12210 }
12211 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12212
12213 static void
12214 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12215                                struct net_device *netdev, int index,
12216                                const u8 *bssid, bool preauth, gfp_t gfp)
12217 {
12218         struct sk_buff *msg;
12219         struct nlattr *attr;
12220         void *hdr;
12221
12222         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12223         if (!msg)
12224                 return;
12225
12226         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12227         if (!hdr) {
12228                 nlmsg_free(msg);
12229                 return;
12230         }
12231
12232         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12233             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12234                 goto nla_put_failure;
12235
12236         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12237         if (!attr)
12238                 goto nla_put_failure;
12239
12240         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12241             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12242             (preauth &&
12243              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12244                 goto nla_put_failure;
12245
12246         nla_nest_end(msg, attr);
12247
12248         genlmsg_end(msg, hdr);
12249
12250         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12251                                 NL80211_MCGRP_MLME, gfp);
12252         return;
12253
12254  nla_put_failure:
12255         genlmsg_cancel(msg, hdr);
12256         nlmsg_free(msg);
12257 }
12258
12259 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12260                                      const u8 *bssid, bool preauth, gfp_t gfp)
12261 {
12262         struct wireless_dev *wdev = dev->ieee80211_ptr;
12263         struct wiphy *wiphy = wdev->wiphy;
12264         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12265
12266         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12267         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12268 }
12269 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12270
12271 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12272                                      struct net_device *netdev,
12273                                      struct cfg80211_chan_def *chandef,
12274                                      gfp_t gfp,
12275                                      enum nl80211_commands notif,
12276                                      u8 count)
12277 {
12278         struct sk_buff *msg;
12279         void *hdr;
12280
12281         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12282         if (!msg)
12283                 return;
12284
12285         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12286         if (!hdr) {
12287                 nlmsg_free(msg);
12288                 return;
12289         }
12290
12291         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12292                 goto nla_put_failure;
12293
12294         if (nl80211_send_chandef(msg, chandef))
12295                 goto nla_put_failure;
12296
12297         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12298             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12299                         goto nla_put_failure;
12300
12301         genlmsg_end(msg, hdr);
12302
12303         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12304                                 NL80211_MCGRP_MLME, gfp);
12305         return;
12306
12307  nla_put_failure:
12308         genlmsg_cancel(msg, hdr);
12309         nlmsg_free(msg);
12310 }
12311
12312 void cfg80211_ch_switch_notify(struct net_device *dev,
12313                                struct cfg80211_chan_def *chandef)
12314 {
12315         struct wireless_dev *wdev = dev->ieee80211_ptr;
12316         struct wiphy *wiphy = wdev->wiphy;
12317         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12318
12319         ASSERT_WDEV_LOCK(wdev);
12320
12321         trace_cfg80211_ch_switch_notify(dev, chandef);
12322
12323         wdev->chandef = *chandef;
12324         wdev->preset_chandef = *chandef;
12325         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12326                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12327 }
12328 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12329
12330 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12331                                        struct cfg80211_chan_def *chandef,
12332                                        u8 count)
12333 {
12334         struct wireless_dev *wdev = dev->ieee80211_ptr;
12335         struct wiphy *wiphy = wdev->wiphy;
12336         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12337
12338         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12339
12340         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12341                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12342 }
12343 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12344
12345 void
12346 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12347                      const struct cfg80211_chan_def *chandef,
12348                      enum nl80211_radar_event event,
12349                      struct net_device *netdev, gfp_t gfp)
12350 {
12351         struct sk_buff *msg;
12352         void *hdr;
12353
12354         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12355         if (!msg)
12356                 return;
12357
12358         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12359         if (!hdr) {
12360                 nlmsg_free(msg);
12361                 return;
12362         }
12363
12364         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12365                 goto nla_put_failure;
12366
12367         /* NOP and radar events don't need a netdev parameter */
12368         if (netdev) {
12369                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12370
12371                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12372                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12373                         goto nla_put_failure;
12374         }
12375
12376         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12377                 goto nla_put_failure;
12378
12379         if (nl80211_send_chandef(msg, chandef))
12380                 goto nla_put_failure;
12381
12382         genlmsg_end(msg, hdr);
12383
12384         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12385                                 NL80211_MCGRP_MLME, gfp);
12386         return;
12387
12388  nla_put_failure:
12389         genlmsg_cancel(msg, hdr);
12390         nlmsg_free(msg);
12391 }
12392
12393 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12394                            u64 cookie, bool acked, gfp_t gfp)
12395 {
12396         struct wireless_dev *wdev = dev->ieee80211_ptr;
12397         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12398         struct sk_buff *msg;
12399         void *hdr;
12400
12401         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12402
12403         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12404
12405         if (!msg)
12406                 return;
12407
12408         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12409         if (!hdr) {
12410                 nlmsg_free(msg);
12411                 return;
12412         }
12413
12414         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12415             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12416             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12417             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12418             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12419                 goto nla_put_failure;
12420
12421         genlmsg_end(msg, hdr);
12422
12423         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12424                                 NL80211_MCGRP_MLME, gfp);
12425         return;
12426
12427  nla_put_failure:
12428         genlmsg_cancel(msg, hdr);
12429         nlmsg_free(msg);
12430 }
12431 EXPORT_SYMBOL(cfg80211_probe_status);
12432
12433 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12434                                  const u8 *frame, size_t len,
12435                                  int freq, int sig_dbm)
12436 {
12437         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12438         struct sk_buff *msg;
12439         void *hdr;
12440         struct cfg80211_beacon_registration *reg;
12441
12442         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12443
12444         spin_lock_bh(&rdev->beacon_registrations_lock);
12445         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12446                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12447                 if (!msg) {
12448                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12449                         return;
12450                 }
12451
12452                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12453                 if (!hdr)
12454                         goto nla_put_failure;
12455
12456                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12457                     (freq &&
12458                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12459                     (sig_dbm &&
12460                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12461                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12462                         goto nla_put_failure;
12463
12464                 genlmsg_end(msg, hdr);
12465
12466                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12467         }
12468         spin_unlock_bh(&rdev->beacon_registrations_lock);
12469         return;
12470
12471  nla_put_failure:
12472         spin_unlock_bh(&rdev->beacon_registrations_lock);
12473         if (hdr)
12474                 genlmsg_cancel(msg, hdr);
12475         nlmsg_free(msg);
12476 }
12477 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12478
12479 #ifdef CONFIG_PM
12480 static int cfg80211_net_detect_results(struct sk_buff *msg,
12481                                        struct cfg80211_wowlan_wakeup *wakeup)
12482 {
12483         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12484         struct nlattr *nl_results, *nl_match, *nl_freqs;
12485         int i, j;
12486
12487         nl_results = nla_nest_start(
12488                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12489         if (!nl_results)
12490                 return -EMSGSIZE;
12491
12492         for (i = 0; i < nd->n_matches; i++) {
12493                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12494
12495                 nl_match = nla_nest_start(msg, i);
12496                 if (!nl_match)
12497                         break;
12498
12499                 /* The SSID attribute is optional in nl80211, but for
12500                  * simplicity reasons it's always present in the
12501                  * cfg80211 structure.  If a driver can't pass the
12502                  * SSID, that needs to be changed.  A zero length SSID
12503                  * is still a valid SSID (wildcard), so it cannot be
12504                  * used for this purpose.
12505                  */
12506                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12507                             match->ssid.ssid)) {
12508                         nla_nest_cancel(msg, nl_match);
12509                         goto out;
12510                 }
12511
12512                 if (match->n_channels) {
12513                         nl_freqs = nla_nest_start(
12514                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12515                         if (!nl_freqs) {
12516                                 nla_nest_cancel(msg, nl_match);
12517                                 goto out;
12518                         }
12519
12520                         for (j = 0; j < match->n_channels; j++) {
12521                                 if (nla_put_u32(msg,
12522                                                 NL80211_ATTR_WIPHY_FREQ,
12523                                                 match->channels[j])) {
12524                                         nla_nest_cancel(msg, nl_freqs);
12525                                         nla_nest_cancel(msg, nl_match);
12526                                         goto out;
12527                                 }
12528                         }
12529
12530                         nla_nest_end(msg, nl_freqs);
12531                 }
12532
12533                 nla_nest_end(msg, nl_match);
12534         }
12535
12536 out:
12537         nla_nest_end(msg, nl_results);
12538         return 0;
12539 }
12540
12541 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12542                                    struct cfg80211_wowlan_wakeup *wakeup,
12543                                    gfp_t gfp)
12544 {
12545         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12546         struct sk_buff *msg;
12547         void *hdr;
12548         int size = 200;
12549
12550         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12551
12552         if (wakeup)
12553                 size += wakeup->packet_present_len;
12554
12555         msg = nlmsg_new(size, gfp);
12556         if (!msg)
12557                 return;
12558
12559         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12560         if (!hdr)
12561                 goto free_msg;
12562
12563         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12564             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12565                 goto free_msg;
12566
12567         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12568                                         wdev->netdev->ifindex))
12569                 goto free_msg;
12570
12571         if (wakeup) {
12572                 struct nlattr *reasons;
12573
12574                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12575                 if (!reasons)
12576                         goto free_msg;
12577
12578                 if (wakeup->disconnect &&
12579                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12580                         goto free_msg;
12581                 if (wakeup->magic_pkt &&
12582                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12583                         goto free_msg;
12584                 if (wakeup->gtk_rekey_failure &&
12585                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12586                         goto free_msg;
12587                 if (wakeup->eap_identity_req &&
12588                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12589                         goto free_msg;
12590                 if (wakeup->four_way_handshake &&
12591                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12592                         goto free_msg;
12593                 if (wakeup->rfkill_release &&
12594                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12595                         goto free_msg;
12596
12597                 if (wakeup->pattern_idx >= 0 &&
12598                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12599                                 wakeup->pattern_idx))
12600                         goto free_msg;
12601
12602                 if (wakeup->tcp_match &&
12603                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12604                         goto free_msg;
12605
12606                 if (wakeup->tcp_connlost &&
12607                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12608                         goto free_msg;
12609
12610                 if (wakeup->tcp_nomoretokens &&
12611                     nla_put_flag(msg,
12612                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12613                         goto free_msg;
12614
12615                 if (wakeup->packet) {
12616                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12617                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12618
12619                         if (!wakeup->packet_80211) {
12620                                 pkt_attr =
12621                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12622                                 len_attr =
12623                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12624                         }
12625
12626                         if (wakeup->packet_len &&
12627                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12628                                 goto free_msg;
12629
12630                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12631                                     wakeup->packet))
12632                                 goto free_msg;
12633                 }
12634
12635                 if (wakeup->net_detect &&
12636                     cfg80211_net_detect_results(msg, wakeup))
12637                                 goto free_msg;
12638
12639                 nla_nest_end(msg, reasons);
12640         }
12641
12642         genlmsg_end(msg, hdr);
12643
12644         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12645                                 NL80211_MCGRP_MLME, gfp);
12646         return;
12647
12648  free_msg:
12649         nlmsg_free(msg);
12650 }
12651 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12652 #endif
12653
12654 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12655                                 enum nl80211_tdls_operation oper,
12656                                 u16 reason_code, gfp_t gfp)
12657 {
12658         struct wireless_dev *wdev = dev->ieee80211_ptr;
12659         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12660         struct sk_buff *msg;
12661         void *hdr;
12662
12663         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12664                                          reason_code);
12665
12666         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12667         if (!msg)
12668                 return;
12669
12670         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12671         if (!hdr) {
12672                 nlmsg_free(msg);
12673                 return;
12674         }
12675
12676         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12677             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12678             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12679             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12680             (reason_code > 0 &&
12681              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12682                 goto nla_put_failure;
12683
12684         genlmsg_end(msg, hdr);
12685
12686         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12687                                 NL80211_MCGRP_MLME, gfp);
12688         return;
12689
12690  nla_put_failure:
12691         genlmsg_cancel(msg, hdr);
12692         nlmsg_free(msg);
12693 }
12694 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12695
12696 static int nl80211_netlink_notify(struct notifier_block * nb,
12697                                   unsigned long state,
12698                                   void *_notify)
12699 {
12700         struct netlink_notify *notify = _notify;
12701         struct cfg80211_registered_device *rdev;
12702         struct wireless_dev *wdev;
12703         struct cfg80211_beacon_registration *reg, *tmp;
12704
12705         if (state != NETLINK_URELEASE)
12706                 return NOTIFY_DONE;
12707
12708         rcu_read_lock();
12709
12710         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12711                 bool schedule_destroy_work = false;
12712                 bool schedule_scan_stop = false;
12713                 struct cfg80211_sched_scan_request *sched_scan_req =
12714                         rcu_dereference(rdev->sched_scan_req);
12715
12716                 if (sched_scan_req && notify->portid &&
12717                     sched_scan_req->owner_nlportid == notify->portid)
12718                         schedule_scan_stop = true;
12719
12720                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12721                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12722
12723                         if (wdev->owner_nlportid == notify->portid)
12724                                 schedule_destroy_work = true;
12725                 }
12726
12727                 spin_lock_bh(&rdev->beacon_registrations_lock);
12728                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12729                                          list) {
12730                         if (reg->nlportid == notify->portid) {
12731                                 list_del(&reg->list);
12732                                 kfree(reg);
12733                                 break;
12734                         }
12735                 }
12736                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12737
12738                 if (schedule_destroy_work) {
12739                         struct cfg80211_iface_destroy *destroy;
12740
12741                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12742                         if (destroy) {
12743                                 destroy->nlportid = notify->portid;
12744                                 spin_lock(&rdev->destroy_list_lock);
12745                                 list_add(&destroy->list, &rdev->destroy_list);
12746                                 spin_unlock(&rdev->destroy_list_lock);
12747                                 schedule_work(&rdev->destroy_work);
12748                         }
12749                 } else if (schedule_scan_stop) {
12750                         sched_scan_req->owner_nlportid = 0;
12751
12752                         if (rdev->ops->sched_scan_stop &&
12753                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12754                                 schedule_work(&rdev->sched_scan_stop_wk);
12755                 }
12756         }
12757
12758         rcu_read_unlock();
12759
12760         return NOTIFY_OK;
12761 }
12762
12763 static struct notifier_block nl80211_netlink_notifier = {
12764         .notifier_call = nl80211_netlink_notify,
12765 };
12766
12767 void cfg80211_ft_event(struct net_device *netdev,
12768                        struct cfg80211_ft_event_params *ft_event)
12769 {
12770         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12771         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12772         struct sk_buff *msg;
12773         void *hdr;
12774
12775         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12776
12777         if (!ft_event->target_ap)
12778                 return;
12779
12780         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12781         if (!msg)
12782                 return;
12783
12784         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12785         if (!hdr)
12786                 goto out;
12787
12788         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12789             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12790             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12791                 goto out;
12792
12793         if (ft_event->ies &&
12794             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12795                 goto out;
12796         if (ft_event->ric_ies &&
12797             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12798                     ft_event->ric_ies))
12799                 goto out;
12800
12801         genlmsg_end(msg, hdr);
12802
12803         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12804                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12805         return;
12806  out:
12807         nlmsg_free(msg);
12808 }
12809 EXPORT_SYMBOL(cfg80211_ft_event);
12810
12811 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12812 {
12813         struct cfg80211_registered_device *rdev;
12814         struct sk_buff *msg;
12815         void *hdr;
12816         u32 nlportid;
12817
12818         rdev = wiphy_to_rdev(wdev->wiphy);
12819         if (!rdev->crit_proto_nlportid)
12820                 return;
12821
12822         nlportid = rdev->crit_proto_nlportid;
12823         rdev->crit_proto_nlportid = 0;
12824
12825         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12826         if (!msg)
12827                 return;
12828
12829         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12830         if (!hdr)
12831                 goto nla_put_failure;
12832
12833         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12834             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12835                 goto nla_put_failure;
12836
12837         genlmsg_end(msg, hdr);
12838
12839         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12840         return;
12841
12842  nla_put_failure:
12843         if (hdr)
12844                 genlmsg_cancel(msg, hdr);
12845         nlmsg_free(msg);
12846
12847 }
12848 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12849
12850 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12851 {
12852         struct wiphy *wiphy = wdev->wiphy;
12853         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12854         struct sk_buff *msg;
12855         void *hdr;
12856
12857         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12858         if (!msg)
12859                 return;
12860
12861         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12862         if (!hdr)
12863                 goto out;
12864
12865         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12866             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12867             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12868                 goto out;
12869
12870         genlmsg_end(msg, hdr);
12871
12872         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12873                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12874         return;
12875  out:
12876         nlmsg_free(msg);
12877 }
12878
12879 /* initialisation/exit functions */
12880
12881 int nl80211_init(void)
12882 {
12883         int err;
12884
12885         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12886                                                    nl80211_mcgrps);
12887         if (err)
12888                 return err;
12889
12890         err = netlink_register_notifier(&nl80211_netlink_notifier);
12891         if (err)
12892                 goto err_out;
12893
12894         return 0;
12895  err_out:
12896         genl_unregister_family(&nl80211_fam);
12897         return err;
12898 }
12899
12900 void nl80211_exit(void)
12901 {
12902         netlink_unregister_notifier(&nl80211_netlink_notifier);
12903         genl_unregister_family(&nl80211_fam);
12904 }