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
3584         rate = nla_nest_start(msg, attr);
3585         if (!rate)
3586                 return false;
3587
3588         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3589         bitrate = cfg80211_calculate_bitrate(info);
3590         /* report 16-bit bitrate only if we can */
3591         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3592         if (bitrate > 0 &&
3593             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3594                 return false;
3595         if (bitrate_compat > 0 &&
3596             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3597                 return false;
3598
3599         if (info->flags & RATE_INFO_FLAGS_MCS) {
3600                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3601                         return false;
3602                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3603                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3604                         return false;
3605                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3606                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3607                         return false;
3608         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3609                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3610                         return false;
3611                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3612                         return false;
3613                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3614                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3615                         return false;
3616                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3617                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3618                         return false;
3619                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3620                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3621                         return false;
3622                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3623                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3624                         return false;
3625                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3626                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3627                         return false;
3628         }
3629
3630         nla_nest_end(msg, rate);
3631         return true;
3632 }
3633
3634 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3635                                int id)
3636 {
3637         void *attr;
3638         int i = 0;
3639
3640         if (!mask)
3641                 return true;
3642
3643         attr = nla_nest_start(msg, id);
3644         if (!attr)
3645                 return false;
3646
3647         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3648                 if (!(mask & BIT(i)))
3649                         continue;
3650
3651                 if (nla_put_u8(msg, i, signal[i]))
3652                         return false;
3653         }
3654
3655         nla_nest_end(msg, attr);
3656
3657         return true;
3658 }
3659
3660 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3661                                 u32 seq, int flags,
3662                                 struct cfg80211_registered_device *rdev,
3663                                 struct net_device *dev,
3664                                 const u8 *mac_addr, struct station_info *sinfo)
3665 {
3666         void *hdr;
3667         struct nlattr *sinfoattr, *bss_param;
3668
3669         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3670         if (!hdr)
3671                 return -1;
3672
3673         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3674             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3675             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3676                 goto nla_put_failure;
3677
3678         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3679         if (!sinfoattr)
3680                 goto nla_put_failure;
3681
3682 #define PUT_SINFO(attr, memb, type) do {                                \
3683         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3684             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3685                              sinfo->memb))                              \
3686                 goto nla_put_failure;                                   \
3687         } while (0)
3688
3689         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3690         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3691
3692         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3693                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3694             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3695                         (u32)sinfo->rx_bytes))
3696                 goto nla_put_failure;
3697
3698         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3699                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3700             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3701                         (u32)sinfo->tx_bytes))
3702                 goto nla_put_failure;
3703
3704         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3705         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3706         PUT_SINFO(LLID, llid, u16);
3707         PUT_SINFO(PLID, plid, u16);
3708         PUT_SINFO(PLINK_STATE, plink_state, u8);
3709
3710         switch (rdev->wiphy.signal_type) {
3711         case CFG80211_SIGNAL_TYPE_MBM:
3712                 PUT_SINFO(SIGNAL, signal, u8);
3713                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3714                 break;
3715         default:
3716                 break;
3717         }
3718         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3719                 if (!nl80211_put_signal(msg, sinfo->chains,
3720                                         sinfo->chain_signal,
3721                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3722                         goto nla_put_failure;
3723         }
3724         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3725                 if (!nl80211_put_signal(msg, sinfo->chains,
3726                                         sinfo->chain_signal_avg,
3727                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3728                         goto nla_put_failure;
3729         }
3730         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3731                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3732                                           NL80211_STA_INFO_TX_BITRATE))
3733                         goto nla_put_failure;
3734         }
3735         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3736                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3737                                           NL80211_STA_INFO_RX_BITRATE))
3738                         goto nla_put_failure;
3739         }
3740
3741         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3742         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3743         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3744         PUT_SINFO(TX_FAILED, tx_failed, u32);
3745         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3746         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3747         PUT_SINFO(LOCAL_PM, local_pm, u32);
3748         PUT_SINFO(PEER_PM, peer_pm, u32);
3749         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3750
3751         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3752                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3753                 if (!bss_param)
3754                         goto nla_put_failure;
3755
3756                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3757                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3758                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3759                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3760                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3761                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3762                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3763                                sinfo->bss_param.dtim_period) ||
3764                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3765                                 sinfo->bss_param.beacon_interval))
3766                         goto nla_put_failure;
3767
3768                 nla_nest_end(msg, bss_param);
3769         }
3770         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3771             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3772                     sizeof(struct nl80211_sta_flag_update),
3773                     &sinfo->sta_flags))
3774                 goto nla_put_failure;
3775
3776         PUT_SINFO(T_OFFSET, t_offset, u64);
3777         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3778         PUT_SINFO(BEACON_RX, rx_beacon, u64);
3779         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3780
3781 #undef PUT_SINFO
3782
3783         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3784                 struct nlattr *tidsattr;
3785                 int tid;
3786
3787                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3788                 if (!tidsattr)
3789                         goto nla_put_failure;
3790
3791                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3792                         struct cfg80211_tid_stats *tidstats;
3793                         struct nlattr *tidattr;
3794
3795                         tidstats = &sinfo->pertid[tid];
3796
3797                         if (!tidstats->filled)
3798                                 continue;
3799
3800                         tidattr = nla_nest_start(msg, tid + 1);
3801                         if (!tidattr)
3802                                 goto nla_put_failure;
3803
3804 #define PUT_TIDVAL(attr, memb, type) do {                               \
3805         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3806             nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr,           \
3807                              tidstats->memb))                           \
3808                 goto nla_put_failure;                                   \
3809         } while (0)
3810
3811                         PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3812                         PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3813                         PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3814                         PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3815
3816 #undef PUT_TIDVAL
3817                         nla_nest_end(msg, tidattr);
3818                 }
3819
3820                 nla_nest_end(msg, tidsattr);
3821         }
3822
3823         nla_nest_end(msg, sinfoattr);
3824
3825         if (sinfo->assoc_req_ies_len &&
3826             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3827                     sinfo->assoc_req_ies))
3828                 goto nla_put_failure;
3829
3830         genlmsg_end(msg, hdr);
3831         return 0;
3832
3833  nla_put_failure:
3834         genlmsg_cancel(msg, hdr);
3835         return -EMSGSIZE;
3836 }
3837
3838 static int nl80211_dump_station(struct sk_buff *skb,
3839                                 struct netlink_callback *cb)
3840 {
3841         struct station_info sinfo;
3842         struct cfg80211_registered_device *rdev;
3843         struct wireless_dev *wdev;
3844         u8 mac_addr[ETH_ALEN];
3845         int sta_idx = cb->args[2];
3846         int err;
3847
3848         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3849         if (err)
3850                 return err;
3851
3852         if (!wdev->netdev) {
3853                 err = -EINVAL;
3854                 goto out_err;
3855         }
3856
3857         if (!rdev->ops->dump_station) {
3858                 err = -EOPNOTSUPP;
3859                 goto out_err;
3860         }
3861
3862         while (1) {
3863                 memset(&sinfo, 0, sizeof(sinfo));
3864                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3865                                         mac_addr, &sinfo);
3866                 if (err == -ENOENT)
3867                         break;
3868                 if (err)
3869                         goto out_err;
3870
3871                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3872                                 NETLINK_CB(cb->skb).portid,
3873                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3874                                 rdev, wdev->netdev, mac_addr,
3875                                 &sinfo) < 0)
3876                         goto out;
3877
3878                 sta_idx++;
3879         }
3880
3881
3882  out:
3883         cb->args[2] = sta_idx;
3884         err = skb->len;
3885  out_err:
3886         nl80211_finish_wdev_dump(rdev);
3887
3888         return err;
3889 }
3890
3891 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3892 {
3893         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3894         struct net_device *dev = info->user_ptr[1];
3895         struct station_info sinfo;
3896         struct sk_buff *msg;
3897         u8 *mac_addr = NULL;
3898         int err;
3899
3900         memset(&sinfo, 0, sizeof(sinfo));
3901
3902         if (!info->attrs[NL80211_ATTR_MAC])
3903                 return -EINVAL;
3904
3905         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3906
3907         if (!rdev->ops->get_station)
3908                 return -EOPNOTSUPP;
3909
3910         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3911         if (err)
3912                 return err;
3913
3914         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3915         if (!msg)
3916                 return -ENOMEM;
3917
3918         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3919                                  info->snd_portid, info->snd_seq, 0,
3920                                  rdev, dev, mac_addr, &sinfo) < 0) {
3921                 nlmsg_free(msg);
3922                 return -ENOBUFS;
3923         }
3924
3925         return genlmsg_reply(msg, info);
3926 }
3927
3928 int cfg80211_check_station_change(struct wiphy *wiphy,
3929                                   struct station_parameters *params,
3930                                   enum cfg80211_station_type statype)
3931 {
3932         if (params->listen_interval != -1)
3933                 return -EINVAL;
3934         if (params->aid &&
3935             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3936                 return -EINVAL;
3937
3938         /* When you run into this, adjust the code below for the new flag */
3939         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3940
3941         switch (statype) {
3942         case CFG80211_STA_MESH_PEER_KERNEL:
3943         case CFG80211_STA_MESH_PEER_USER:
3944                 /*
3945                  * No ignoring the TDLS flag here -- the userspace mesh
3946                  * code doesn't have the bug of including TDLS in the
3947                  * mask everywhere.
3948                  */
3949                 if (params->sta_flags_mask &
3950                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3951                                   BIT(NL80211_STA_FLAG_MFP) |
3952                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3953                         return -EINVAL;
3954                 break;
3955         case CFG80211_STA_TDLS_PEER_SETUP:
3956         case CFG80211_STA_TDLS_PEER_ACTIVE:
3957                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3958                         return -EINVAL;
3959                 /* ignore since it can't change */
3960                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3961                 break;
3962         default:
3963                 /* disallow mesh-specific things */
3964                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3965                         return -EINVAL;
3966                 if (params->local_pm)
3967                         return -EINVAL;
3968                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3969                         return -EINVAL;
3970         }
3971
3972         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3973             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3974                 /* TDLS can't be set, ... */
3975                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3976                         return -EINVAL;
3977                 /*
3978                  * ... but don't bother the driver with it. This works around
3979                  * a hostapd/wpa_supplicant issue -- it always includes the
3980                  * TLDS_PEER flag in the mask even for AP mode.
3981                  */
3982                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3983         }
3984
3985         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3986                 /* reject other things that can't change */
3987                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3988                         return -EINVAL;
3989                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3990                         return -EINVAL;
3991                 if (params->supported_rates)
3992                         return -EINVAL;
3993                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3994                         return -EINVAL;
3995         }
3996
3997         if (statype != CFG80211_STA_AP_CLIENT) {
3998                 if (params->vlan)
3999                         return -EINVAL;
4000         }
4001
4002         switch (statype) {
4003         case CFG80211_STA_AP_MLME_CLIENT:
4004                 /* Use this only for authorizing/unauthorizing a station */
4005                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4006                         return -EOPNOTSUPP;
4007                 break;
4008         case CFG80211_STA_AP_CLIENT:
4009                 /* accept only the listed bits */
4010                 if (params->sta_flags_mask &
4011                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4012                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4013                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4014                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4015                                   BIT(NL80211_STA_FLAG_WME) |
4016                                   BIT(NL80211_STA_FLAG_MFP)))
4017                         return -EINVAL;
4018
4019                 /* but authenticated/associated only if driver handles it */
4020                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4021                     params->sta_flags_mask &
4022                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4023                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4024                         return -EINVAL;
4025                 break;
4026         case CFG80211_STA_IBSS:
4027         case CFG80211_STA_AP_STA:
4028                 /* reject any changes other than AUTHORIZED */
4029                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4030                         return -EINVAL;
4031                 break;
4032         case CFG80211_STA_TDLS_PEER_SETUP:
4033                 /* reject any changes other than AUTHORIZED or WME */
4034                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4035                                                BIT(NL80211_STA_FLAG_WME)))
4036                         return -EINVAL;
4037                 /* force (at least) rates when authorizing */
4038                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4039                     !params->supported_rates)
4040                         return -EINVAL;
4041                 break;
4042         case CFG80211_STA_TDLS_PEER_ACTIVE:
4043                 /* reject any changes */
4044                 return -EINVAL;
4045         case CFG80211_STA_MESH_PEER_KERNEL:
4046                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4047                         return -EINVAL;
4048                 break;
4049         case CFG80211_STA_MESH_PEER_USER:
4050                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4051                         return -EINVAL;
4052                 break;
4053         }
4054
4055         return 0;
4056 }
4057 EXPORT_SYMBOL(cfg80211_check_station_change);
4058
4059 /*
4060  * Get vlan interface making sure it is running and on the right wiphy.
4061  */
4062 static struct net_device *get_vlan(struct genl_info *info,
4063                                    struct cfg80211_registered_device *rdev)
4064 {
4065         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4066         struct net_device *v;
4067         int ret;
4068
4069         if (!vlanattr)
4070                 return NULL;
4071
4072         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4073         if (!v)
4074                 return ERR_PTR(-ENODEV);
4075
4076         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4077                 ret = -EINVAL;
4078                 goto error;
4079         }
4080
4081         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4082             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4083             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4084                 ret = -EINVAL;
4085                 goto error;
4086         }
4087
4088         if (!netif_running(v)) {
4089                 ret = -ENETDOWN;
4090                 goto error;
4091         }
4092
4093         return v;
4094  error:
4095         dev_put(v);
4096         return ERR_PTR(ret);
4097 }
4098
4099 static const struct nla_policy
4100 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4101         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4102         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4103 };
4104
4105 static int nl80211_parse_sta_wme(struct genl_info *info,
4106                                  struct station_parameters *params)
4107 {
4108         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4109         struct nlattr *nla;
4110         int err;
4111
4112         /* parse WME attributes if present */
4113         if (!info->attrs[NL80211_ATTR_STA_WME])
4114                 return 0;
4115
4116         nla = info->attrs[NL80211_ATTR_STA_WME];
4117         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4118                                nl80211_sta_wme_policy);
4119         if (err)
4120                 return err;
4121
4122         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4123                 params->uapsd_queues = nla_get_u8(
4124                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4125         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4126                 return -EINVAL;
4127
4128         if (tb[NL80211_STA_WME_MAX_SP])
4129                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4130
4131         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4132                 return -EINVAL;
4133
4134         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4135
4136         return 0;
4137 }
4138
4139 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4140                                       struct station_parameters *params)
4141 {
4142         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4143                 params->supported_channels =
4144                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4145                 params->supported_channels_len =
4146                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4147                 /*
4148                  * Need to include at least one (first channel, number of
4149                  * channels) tuple for each subband, and must have proper
4150                  * tuples for the rest of the data as well.
4151                  */
4152                 if (params->supported_channels_len < 2)
4153                         return -EINVAL;
4154                 if (params->supported_channels_len % 2)
4155                         return -EINVAL;
4156         }
4157
4158         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4159                 params->supported_oper_classes =
4160                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4161                 params->supported_oper_classes_len =
4162                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4163                 /*
4164                  * The value of the Length field of the Supported Operating
4165                  * Classes element is between 2 and 253.
4166                  */
4167                 if (params->supported_oper_classes_len < 2 ||
4168                     params->supported_oper_classes_len > 253)
4169                         return -EINVAL;
4170         }
4171         return 0;
4172 }
4173
4174 static int nl80211_set_station_tdls(struct genl_info *info,
4175                                     struct station_parameters *params)
4176 {
4177         int err;
4178         /* Dummy STA entry gets updated once the peer capabilities are known */
4179         if (info->attrs[NL80211_ATTR_PEER_AID])
4180                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4181         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4182                 params->ht_capa =
4183                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4184         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4185                 params->vht_capa =
4186                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4187
4188         err = nl80211_parse_sta_channel_info(info, params);
4189         if (err)
4190                 return err;
4191
4192         return nl80211_parse_sta_wme(info, params);
4193 }
4194
4195 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4196 {
4197         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4198         struct net_device *dev = info->user_ptr[1];
4199         struct station_parameters params;
4200         u8 *mac_addr;
4201         int err;
4202
4203         memset(&params, 0, sizeof(params));
4204
4205         params.listen_interval = -1;
4206
4207         if (!rdev->ops->change_station)
4208                 return -EOPNOTSUPP;
4209
4210         if (info->attrs[NL80211_ATTR_STA_AID])
4211                 return -EINVAL;
4212
4213         if (!info->attrs[NL80211_ATTR_MAC])
4214                 return -EINVAL;
4215
4216         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4217
4218         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4219                 params.supported_rates =
4220                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4221                 params.supported_rates_len =
4222                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4223         }
4224
4225         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4226                 params.capability =
4227                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4228                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4229         }
4230
4231         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4232                 params.ext_capab =
4233                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4234                 params.ext_capab_len =
4235                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4236         }
4237
4238         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4239                 return -EINVAL;
4240
4241         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4242                 return -EINVAL;
4243
4244         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4245                 params.plink_action =
4246                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4247                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4248                         return -EINVAL;
4249         }
4250
4251         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4252                 params.plink_state =
4253                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4254                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4255                         return -EINVAL;
4256                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4257         }
4258
4259         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4260                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4261                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4262
4263                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4264                     pm > NL80211_MESH_POWER_MAX)
4265                         return -EINVAL;
4266
4267                 params.local_pm = pm;
4268         }
4269
4270         /* Include parameters for TDLS peer (will check later) */
4271         err = nl80211_set_station_tdls(info, &params);
4272         if (err)
4273                 return err;
4274
4275         params.vlan = get_vlan(info, rdev);
4276         if (IS_ERR(params.vlan))
4277                 return PTR_ERR(params.vlan);
4278
4279         switch (dev->ieee80211_ptr->iftype) {
4280         case NL80211_IFTYPE_AP:
4281         case NL80211_IFTYPE_AP_VLAN:
4282         case NL80211_IFTYPE_P2P_GO:
4283         case NL80211_IFTYPE_P2P_CLIENT:
4284         case NL80211_IFTYPE_STATION:
4285         case NL80211_IFTYPE_ADHOC:
4286         case NL80211_IFTYPE_MESH_POINT:
4287                 break;
4288         default:
4289                 err = -EOPNOTSUPP;
4290                 goto out_put_vlan;
4291         }
4292
4293         /* driver will call cfg80211_check_station_change() */
4294         err = rdev_change_station(rdev, dev, mac_addr, &params);
4295
4296  out_put_vlan:
4297         if (params.vlan)
4298                 dev_put(params.vlan);
4299
4300         return err;
4301 }
4302
4303 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4304 {
4305         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4306         int err;
4307         struct net_device *dev = info->user_ptr[1];
4308         struct station_parameters params;
4309         u8 *mac_addr = NULL;
4310
4311         memset(&params, 0, sizeof(params));
4312
4313         if (!rdev->ops->add_station)
4314                 return -EOPNOTSUPP;
4315
4316         if (!info->attrs[NL80211_ATTR_MAC])
4317                 return -EINVAL;
4318
4319         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4320                 return -EINVAL;
4321
4322         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4323                 return -EINVAL;
4324
4325         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4326             !info->attrs[NL80211_ATTR_PEER_AID])
4327                 return -EINVAL;
4328
4329         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4330         params.supported_rates =
4331                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4332         params.supported_rates_len =
4333                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4334         params.listen_interval =
4335                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4336
4337         if (info->attrs[NL80211_ATTR_PEER_AID])
4338                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4339         else
4340                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4341         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4342                 return -EINVAL;
4343
4344         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4345                 params.capability =
4346                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4347                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4348         }
4349
4350         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4351                 params.ext_capab =
4352                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4353                 params.ext_capab_len =
4354                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4355         }
4356
4357         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4358                 params.ht_capa =
4359                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4360
4361         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4362                 params.vht_capa =
4363                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4364
4365         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4366                 params.opmode_notif_used = true;
4367                 params.opmode_notif =
4368                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4369         }
4370
4371         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4372                 params.plink_action =
4373                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4374                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4375                         return -EINVAL;
4376         }
4377
4378         err = nl80211_parse_sta_channel_info(info, &params);
4379         if (err)
4380                 return err;
4381
4382         err = nl80211_parse_sta_wme(info, &params);
4383         if (err)
4384                 return err;
4385
4386         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4387                 return -EINVAL;
4388
4389         /* When you run into this, adjust the code below for the new flag */
4390         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4391
4392         switch (dev->ieee80211_ptr->iftype) {
4393         case NL80211_IFTYPE_AP:
4394         case NL80211_IFTYPE_AP_VLAN:
4395         case NL80211_IFTYPE_P2P_GO:
4396                 /* ignore WME attributes if iface/sta is not capable */
4397                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4398                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4399                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4400
4401                 /* TDLS peers cannot be added */
4402                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4403                     info->attrs[NL80211_ATTR_PEER_AID])
4404                         return -EINVAL;
4405                 /* but don't bother the driver with it */
4406                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4407
4408                 /* allow authenticated/associated only if driver handles it */
4409                 if (!(rdev->wiphy.features &
4410                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4411                     params.sta_flags_mask &
4412                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4413                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4414                         return -EINVAL;
4415
4416                 /* must be last in here for error handling */
4417                 params.vlan = get_vlan(info, rdev);
4418                 if (IS_ERR(params.vlan))
4419                         return PTR_ERR(params.vlan);
4420                 break;
4421         case NL80211_IFTYPE_MESH_POINT:
4422                 /* ignore uAPSD data */
4423                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4424
4425                 /* associated is disallowed */
4426                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4427                         return -EINVAL;
4428                 /* TDLS peers cannot be added */
4429                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4430                     info->attrs[NL80211_ATTR_PEER_AID])
4431                         return -EINVAL;
4432                 break;
4433         case NL80211_IFTYPE_STATION:
4434         case NL80211_IFTYPE_P2P_CLIENT:
4435                 /* ignore uAPSD data */
4436                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4437
4438                 /* these are disallowed */
4439                 if (params.sta_flags_mask &
4440                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4441                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4442                         return -EINVAL;
4443                 /* Only TDLS peers can be added */
4444                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4445                         return -EINVAL;
4446                 /* Can only add if TDLS ... */
4447                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4448                         return -EOPNOTSUPP;
4449                 /* ... with external setup is supported */
4450                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4451                         return -EOPNOTSUPP;
4452                 /*
4453                  * Older wpa_supplicant versions always mark the TDLS peer
4454                  * as authorized, but it shouldn't yet be.
4455                  */
4456                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4457                 break;
4458         default:
4459                 return -EOPNOTSUPP;
4460         }
4461
4462         /* be aware of params.vlan when changing code here */
4463
4464         err = rdev_add_station(rdev, dev, mac_addr, &params);
4465
4466         if (params.vlan)
4467                 dev_put(params.vlan);
4468         return err;
4469 }
4470
4471 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4472 {
4473         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4474         struct net_device *dev = info->user_ptr[1];
4475         struct station_del_parameters params;
4476
4477         memset(&params, 0, sizeof(params));
4478
4479         if (info->attrs[NL80211_ATTR_MAC])
4480                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4481
4482         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4483             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4484             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4485             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4486                 return -EINVAL;
4487
4488         if (!rdev->ops->del_station)
4489                 return -EOPNOTSUPP;
4490
4491         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4492                 params.subtype =
4493                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4494                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4495                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4496                         return -EINVAL;
4497         } else {
4498                 /* Default to Deauthentication frame */
4499                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4500         }
4501
4502         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4503                 params.reason_code =
4504                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4505                 if (params.reason_code == 0)
4506                         return -EINVAL; /* 0 is reserved */
4507         } else {
4508                 /* Default to reason code 2 */
4509                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4510         }
4511
4512         return rdev_del_station(rdev, dev, &params);
4513 }
4514
4515 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4516                                 int flags, struct net_device *dev,
4517                                 u8 *dst, u8 *next_hop,
4518                                 struct mpath_info *pinfo)
4519 {
4520         void *hdr;
4521         struct nlattr *pinfoattr;
4522
4523         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4524         if (!hdr)
4525                 return -1;
4526
4527         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4528             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4529             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4530             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4531                 goto nla_put_failure;
4532
4533         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4534         if (!pinfoattr)
4535                 goto nla_put_failure;
4536         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4537             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4538                         pinfo->frame_qlen))
4539                 goto nla_put_failure;
4540         if (((pinfo->filled & MPATH_INFO_SN) &&
4541              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4542             ((pinfo->filled & MPATH_INFO_METRIC) &&
4543              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4544                          pinfo->metric)) ||
4545             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4546              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4547                          pinfo->exptime)) ||
4548             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4549              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4550                         pinfo->flags)) ||
4551             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4552              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4553                          pinfo->discovery_timeout)) ||
4554             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4555              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4556                         pinfo->discovery_retries)))
4557                 goto nla_put_failure;
4558
4559         nla_nest_end(msg, pinfoattr);
4560
4561         genlmsg_end(msg, hdr);
4562         return 0;
4563
4564  nla_put_failure:
4565         genlmsg_cancel(msg, hdr);
4566         return -EMSGSIZE;
4567 }
4568
4569 static int nl80211_dump_mpath(struct sk_buff *skb,
4570                               struct netlink_callback *cb)
4571 {
4572         struct mpath_info pinfo;
4573         struct cfg80211_registered_device *rdev;
4574         struct wireless_dev *wdev;
4575         u8 dst[ETH_ALEN];
4576         u8 next_hop[ETH_ALEN];
4577         int path_idx = cb->args[2];
4578         int err;
4579
4580         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4581         if (err)
4582                 return err;
4583
4584         if (!rdev->ops->dump_mpath) {
4585                 err = -EOPNOTSUPP;
4586                 goto out_err;
4587         }
4588
4589         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4590                 err = -EOPNOTSUPP;
4591                 goto out_err;
4592         }
4593
4594         while (1) {
4595                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4596                                       next_hop, &pinfo);
4597                 if (err == -ENOENT)
4598                         break;
4599                 if (err)
4600                         goto out_err;
4601
4602                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4603                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4604                                        wdev->netdev, dst, next_hop,
4605                                        &pinfo) < 0)
4606                         goto out;
4607
4608                 path_idx++;
4609         }
4610
4611
4612  out:
4613         cb->args[2] = path_idx;
4614         err = skb->len;
4615  out_err:
4616         nl80211_finish_wdev_dump(rdev);
4617         return err;
4618 }
4619
4620 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4621 {
4622         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4623         int err;
4624         struct net_device *dev = info->user_ptr[1];
4625         struct mpath_info pinfo;
4626         struct sk_buff *msg;
4627         u8 *dst = NULL;
4628         u8 next_hop[ETH_ALEN];
4629
4630         memset(&pinfo, 0, sizeof(pinfo));
4631
4632         if (!info->attrs[NL80211_ATTR_MAC])
4633                 return -EINVAL;
4634
4635         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4636
4637         if (!rdev->ops->get_mpath)
4638                 return -EOPNOTSUPP;
4639
4640         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4641                 return -EOPNOTSUPP;
4642
4643         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4644         if (err)
4645                 return err;
4646
4647         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4648         if (!msg)
4649                 return -ENOMEM;
4650
4651         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4652                                  dev, dst, next_hop, &pinfo) < 0) {
4653                 nlmsg_free(msg);
4654                 return -ENOBUFS;
4655         }
4656
4657         return genlmsg_reply(msg, info);
4658 }
4659
4660 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4661 {
4662         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4663         struct net_device *dev = info->user_ptr[1];
4664         u8 *dst = NULL;
4665         u8 *next_hop = NULL;
4666
4667         if (!info->attrs[NL80211_ATTR_MAC])
4668                 return -EINVAL;
4669
4670         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4671                 return -EINVAL;
4672
4673         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4674         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4675
4676         if (!rdev->ops->change_mpath)
4677                 return -EOPNOTSUPP;
4678
4679         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4680                 return -EOPNOTSUPP;
4681
4682         return rdev_change_mpath(rdev, dev, dst, next_hop);
4683 }
4684
4685 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4686 {
4687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4688         struct net_device *dev = info->user_ptr[1];
4689         u8 *dst = NULL;
4690         u8 *next_hop = NULL;
4691
4692         if (!info->attrs[NL80211_ATTR_MAC])
4693                 return -EINVAL;
4694
4695         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4696                 return -EINVAL;
4697
4698         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4699         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4700
4701         if (!rdev->ops->add_mpath)
4702                 return -EOPNOTSUPP;
4703
4704         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4705                 return -EOPNOTSUPP;
4706
4707         return rdev_add_mpath(rdev, dev, dst, next_hop);
4708 }
4709
4710 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4711 {
4712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4713         struct net_device *dev = info->user_ptr[1];
4714         u8 *dst = NULL;
4715
4716         if (info->attrs[NL80211_ATTR_MAC])
4717                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4718
4719         if (!rdev->ops->del_mpath)
4720                 return -EOPNOTSUPP;
4721
4722         return rdev_del_mpath(rdev, dev, dst);
4723 }
4724
4725 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4726 {
4727         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4728         int err;
4729         struct net_device *dev = info->user_ptr[1];
4730         struct mpath_info pinfo;
4731         struct sk_buff *msg;
4732         u8 *dst = NULL;
4733         u8 mpp[ETH_ALEN];
4734
4735         memset(&pinfo, 0, sizeof(pinfo));
4736
4737         if (!info->attrs[NL80211_ATTR_MAC])
4738                 return -EINVAL;
4739
4740         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4741
4742         if (!rdev->ops->get_mpp)
4743                 return -EOPNOTSUPP;
4744
4745         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4746                 return -EOPNOTSUPP;
4747
4748         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4749         if (err)
4750                 return err;
4751
4752         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4753         if (!msg)
4754                 return -ENOMEM;
4755
4756         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4757                                dev, dst, mpp, &pinfo) < 0) {
4758                 nlmsg_free(msg);
4759                 return -ENOBUFS;
4760         }
4761
4762         return genlmsg_reply(msg, info);
4763 }
4764
4765 static int nl80211_dump_mpp(struct sk_buff *skb,
4766                             struct netlink_callback *cb)
4767 {
4768         struct mpath_info pinfo;
4769         struct cfg80211_registered_device *rdev;
4770         struct wireless_dev *wdev;
4771         u8 dst[ETH_ALEN];
4772         u8 mpp[ETH_ALEN];
4773         int path_idx = cb->args[2];
4774         int err;
4775
4776         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4777         if (err)
4778                 return err;
4779
4780         if (!rdev->ops->dump_mpp) {
4781                 err = -EOPNOTSUPP;
4782                 goto out_err;
4783         }
4784
4785         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4786                 err = -EOPNOTSUPP;
4787                 goto out_err;
4788         }
4789
4790         while (1) {
4791                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4792                                     mpp, &pinfo);
4793                 if (err == -ENOENT)
4794                         break;
4795                 if (err)
4796                         goto out_err;
4797
4798                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4799                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4800                                        wdev->netdev, dst, mpp,
4801                                        &pinfo) < 0)
4802                         goto out;
4803
4804                 path_idx++;
4805         }
4806
4807  out:
4808         cb->args[2] = path_idx;
4809         err = skb->len;
4810  out_err:
4811         nl80211_finish_wdev_dump(rdev);
4812         return err;
4813 }
4814
4815 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4816 {
4817         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4818         struct net_device *dev = info->user_ptr[1];
4819         struct wireless_dev *wdev = dev->ieee80211_ptr;
4820         struct bss_parameters params;
4821         int err;
4822
4823         memset(&params, 0, sizeof(params));
4824         /* default to not changing parameters */
4825         params.use_cts_prot = -1;
4826         params.use_short_preamble = -1;
4827         params.use_short_slot_time = -1;
4828         params.ap_isolate = -1;
4829         params.ht_opmode = -1;
4830         params.p2p_ctwindow = -1;
4831         params.p2p_opp_ps = -1;
4832
4833         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4834                 params.use_cts_prot =
4835                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4836         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4837                 params.use_short_preamble =
4838                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4839         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4840                 params.use_short_slot_time =
4841                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4842         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4843                 params.basic_rates =
4844                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4845                 params.basic_rates_len =
4846                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4847         }
4848         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4849                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4850         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4851                 params.ht_opmode =
4852                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4853
4854         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4855                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4856                         return -EINVAL;
4857                 params.p2p_ctwindow =
4858                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4859                 if (params.p2p_ctwindow < 0)
4860                         return -EINVAL;
4861                 if (params.p2p_ctwindow != 0 &&
4862                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4863                         return -EINVAL;
4864         }
4865
4866         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4867                 u8 tmp;
4868
4869                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4870                         return -EINVAL;
4871                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4872                 if (tmp > 1)
4873                         return -EINVAL;
4874                 params.p2p_opp_ps = tmp;
4875                 if (params.p2p_opp_ps &&
4876                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4877                         return -EINVAL;
4878         }
4879
4880         if (!rdev->ops->change_bss)
4881                 return -EOPNOTSUPP;
4882
4883         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4884             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4885                 return -EOPNOTSUPP;
4886
4887         wdev_lock(wdev);
4888         err = rdev_change_bss(rdev, dev, &params);
4889         wdev_unlock(wdev);
4890
4891         return err;
4892 }
4893
4894 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4895         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4896         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4897         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4898         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4899         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4900         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4901         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4902 };
4903
4904 static int parse_reg_rule(struct nlattr *tb[],
4905         struct ieee80211_reg_rule *reg_rule)
4906 {
4907         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4908         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4909
4910         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4911                 return -EINVAL;
4912         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4913                 return -EINVAL;
4914         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4915                 return -EINVAL;
4916         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4917                 return -EINVAL;
4918         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4919                 return -EINVAL;
4920
4921         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4922
4923         freq_range->start_freq_khz =
4924                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4925         freq_range->end_freq_khz =
4926                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4927         freq_range->max_bandwidth_khz =
4928                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4929
4930         power_rule->max_eirp =
4931                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4932
4933         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4934                 power_rule->max_antenna_gain =
4935                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4936
4937         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4938                 reg_rule->dfs_cac_ms =
4939                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4940
4941         return 0;
4942 }
4943
4944 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4945 {
4946         char *data = NULL;
4947         enum nl80211_user_reg_hint_type user_reg_hint_type;
4948
4949         /*
4950          * You should only get this when cfg80211 hasn't yet initialized
4951          * completely when built-in to the kernel right between the time
4952          * window between nl80211_init() and regulatory_init(), if that is
4953          * even possible.
4954          */
4955         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4956                 return -EINPROGRESS;
4957
4958         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4959                 user_reg_hint_type =
4960                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4961         else
4962                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4963
4964         switch (user_reg_hint_type) {
4965         case NL80211_USER_REG_HINT_USER:
4966         case NL80211_USER_REG_HINT_CELL_BASE:
4967                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4968                         return -EINVAL;
4969
4970                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4971                 return regulatory_hint_user(data, user_reg_hint_type);
4972         case NL80211_USER_REG_HINT_INDOOR:
4973                 return regulatory_hint_indoor_user();
4974         default:
4975                 return -EINVAL;
4976         }
4977 }
4978
4979 static int nl80211_get_mesh_config(struct sk_buff *skb,
4980                                    struct genl_info *info)
4981 {
4982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4983         struct net_device *dev = info->user_ptr[1];
4984         struct wireless_dev *wdev = dev->ieee80211_ptr;
4985         struct mesh_config cur_params;
4986         int err = 0;
4987         void *hdr;
4988         struct nlattr *pinfoattr;
4989         struct sk_buff *msg;
4990
4991         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4992                 return -EOPNOTSUPP;
4993
4994         if (!rdev->ops->get_mesh_config)
4995                 return -EOPNOTSUPP;
4996
4997         wdev_lock(wdev);
4998         /* If not connected, get default parameters */
4999         if (!wdev->mesh_id_len)
5000                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5001         else
5002                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5003         wdev_unlock(wdev);
5004
5005         if (err)
5006                 return err;
5007
5008         /* Draw up a netlink message to send back */
5009         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5010         if (!msg)
5011                 return -ENOMEM;
5012         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5013                              NL80211_CMD_GET_MESH_CONFIG);
5014         if (!hdr)
5015                 goto out;
5016         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5017         if (!pinfoattr)
5018                 goto nla_put_failure;
5019         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5020             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5021                         cur_params.dot11MeshRetryTimeout) ||
5022             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5023                         cur_params.dot11MeshConfirmTimeout) ||
5024             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5025                         cur_params.dot11MeshHoldingTimeout) ||
5026             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5027                         cur_params.dot11MeshMaxPeerLinks) ||
5028             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5029                        cur_params.dot11MeshMaxRetries) ||
5030             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5031                        cur_params.dot11MeshTTL) ||
5032             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5033                        cur_params.element_ttl) ||
5034             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5035                        cur_params.auto_open_plinks) ||
5036             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5037                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5038             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5039                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5040             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5041                         cur_params.path_refresh_time) ||
5042             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5043                         cur_params.min_discovery_timeout) ||
5044             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5045                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5046             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5047                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5048             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5049                         cur_params.dot11MeshHWMPperrMinInterval) ||
5050             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5051                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5052             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5053                        cur_params.dot11MeshHWMPRootMode) ||
5054             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5055                         cur_params.dot11MeshHWMPRannInterval) ||
5056             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5057                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5058             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5059                        cur_params.dot11MeshForwarding) ||
5060             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5061                         cur_params.rssi_threshold) ||
5062             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5063                         cur_params.ht_opmode) ||
5064             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5065                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5066             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5067                         cur_params.dot11MeshHWMProotInterval) ||
5068             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5069                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5070             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5071                         cur_params.power_mode) ||
5072             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5073                         cur_params.dot11MeshAwakeWindowDuration) ||
5074             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5075                         cur_params.plink_timeout))
5076                 goto nla_put_failure;
5077         nla_nest_end(msg, pinfoattr);
5078         genlmsg_end(msg, hdr);
5079         return genlmsg_reply(msg, info);
5080
5081  nla_put_failure:
5082         genlmsg_cancel(msg, hdr);
5083  out:
5084         nlmsg_free(msg);
5085         return -ENOBUFS;
5086 }
5087
5088 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5089         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5090         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5091         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5092         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5093         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5094         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5095         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5096         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5097         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5098         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5099         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5100         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5101         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5102         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5103         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5104         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5105         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5106         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5107         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5108         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5109         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5110         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5111         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5112         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5113         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5114         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5115         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5116         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5117 };
5118
5119 static const struct nla_policy
5120         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5121         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5122         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5123         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5124         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5125         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5126         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5127         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5128                                     .len = IEEE80211_MAX_DATA_LEN },
5129         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5130 };
5131
5132 static int nl80211_parse_mesh_config(struct genl_info *info,
5133                                      struct mesh_config *cfg,
5134                                      u32 *mask_out)
5135 {
5136         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5137         u32 mask = 0;
5138
5139 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5140 do {                                                                        \
5141         if (tb[attr]) {                                                     \
5142                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5143                         return -EINVAL;                                     \
5144                 cfg->param = fn(tb[attr]);                                  \
5145                 mask |= (1 << (attr - 1));                                  \
5146         }                                                                   \
5147 } while (0)
5148
5149
5150         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5151                 return -EINVAL;
5152         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5153                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5154                              nl80211_meshconf_params_policy))
5155                 return -EINVAL;
5156
5157         /* This makes sure that there aren't more than 32 mesh config
5158          * parameters (otherwise our bitfield scheme would not work.) */
5159         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5160
5161         /* Fill in the params struct */
5162         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5163                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5164                                   nla_get_u16);
5165         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5166                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5167                                   nla_get_u16);
5168         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5169                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5170                                   nla_get_u16);
5171         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5172                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5173                                   nla_get_u16);
5174         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5175                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5176                                   nla_get_u8);
5177         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5178                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5179         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5180                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5181                                   nla_get_u8);
5182         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5183                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5184                                   nla_get_u8);
5185         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5186                                   1, 255, mask,
5187                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5188                                   nla_get_u32);
5189         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5190                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5191                                   nla_get_u8);
5192         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5193                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5194                                   nla_get_u32);
5195         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5196                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5197                                   nla_get_u16);
5198         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5199                                   1, 65535, mask,
5200                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5201                                   nla_get_u32);
5202         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5203                                   1, 65535, mask,
5204                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5205                                   nla_get_u16);
5206         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5207                                   1, 65535, mask,
5208                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5209                                   nla_get_u16);
5210         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5211                                   dot11MeshHWMPnetDiameterTraversalTime,
5212                                   1, 65535, mask,
5213                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5214                                   nla_get_u16);
5215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5216                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5217                                   nla_get_u8);
5218         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5219                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5220                                   nla_get_u16);
5221         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5222                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5223                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5224                                   nla_get_u8);
5225         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5226                                   mask, NL80211_MESHCONF_FORWARDING,
5227                                   nla_get_u8);
5228         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5229                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5230                                   nla_get_s32);
5231         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5232                                   mask, NL80211_MESHCONF_HT_OPMODE,
5233                                   nla_get_u16);
5234         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5235                                   1, 65535, mask,
5236                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5237                                   nla_get_u32);
5238         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5239                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5240                                   nla_get_u16);
5241         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5242                                   dot11MeshHWMPconfirmationInterval,
5243                                   1, 65535, mask,
5244                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5245                                   nla_get_u16);
5246         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5247                                   NL80211_MESH_POWER_ACTIVE,
5248                                   NL80211_MESH_POWER_MAX,
5249                                   mask, NL80211_MESHCONF_POWER_MODE,
5250                                   nla_get_u32);
5251         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5252                                   0, 65535, mask,
5253                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5254         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5255                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5256                                   nla_get_u32);
5257         if (mask_out)
5258                 *mask_out = mask;
5259
5260         return 0;
5261
5262 #undef FILL_IN_MESH_PARAM_IF_SET
5263 }
5264
5265 static int nl80211_parse_mesh_setup(struct genl_info *info,
5266                                      struct mesh_setup *setup)
5267 {
5268         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5269         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5270
5271         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5272                 return -EINVAL;
5273         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5274                              info->attrs[NL80211_ATTR_MESH_SETUP],
5275                              nl80211_mesh_setup_params_policy))
5276                 return -EINVAL;
5277
5278         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5279                 setup->sync_method =
5280                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5281                  IEEE80211_SYNC_METHOD_VENDOR :
5282                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5283
5284         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5285                 setup->path_sel_proto =
5286                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5287                  IEEE80211_PATH_PROTOCOL_VENDOR :
5288                  IEEE80211_PATH_PROTOCOL_HWMP;
5289
5290         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5291                 setup->path_metric =
5292                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5293                  IEEE80211_PATH_METRIC_VENDOR :
5294                  IEEE80211_PATH_METRIC_AIRTIME;
5295
5296
5297         if (tb[NL80211_MESH_SETUP_IE]) {
5298                 struct nlattr *ieattr =
5299                         tb[NL80211_MESH_SETUP_IE];
5300                 if (!is_valid_ie_attr(ieattr))
5301                         return -EINVAL;
5302                 setup->ie = nla_data(ieattr);
5303                 setup->ie_len = nla_len(ieattr);
5304         }
5305         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5306             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5307                 return -EINVAL;
5308         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5309         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5310         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5311         if (setup->is_secure)
5312                 setup->user_mpm = true;
5313
5314         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5315                 if (!setup->user_mpm)
5316                         return -EINVAL;
5317                 setup->auth_id =
5318                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5319         }
5320
5321         return 0;
5322 }
5323
5324 static int nl80211_update_mesh_config(struct sk_buff *skb,
5325                                       struct genl_info *info)
5326 {
5327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5328         struct net_device *dev = info->user_ptr[1];
5329         struct wireless_dev *wdev = dev->ieee80211_ptr;
5330         struct mesh_config cfg;
5331         u32 mask;
5332         int err;
5333
5334         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5335                 return -EOPNOTSUPP;
5336
5337         if (!rdev->ops->update_mesh_config)
5338                 return -EOPNOTSUPP;
5339
5340         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5341         if (err)
5342                 return err;
5343
5344         wdev_lock(wdev);
5345         if (!wdev->mesh_id_len)
5346                 err = -ENOLINK;
5347
5348         if (!err)
5349                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5350
5351         wdev_unlock(wdev);
5352
5353         return err;
5354 }
5355
5356 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5357                               struct sk_buff *msg)
5358 {
5359         struct nlattr *nl_reg_rules;
5360         unsigned int i;
5361
5362         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5363             (regdom->dfs_region &&
5364              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5365                 goto nla_put_failure;
5366
5367         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5368         if (!nl_reg_rules)
5369                 goto nla_put_failure;
5370
5371         for (i = 0; i < regdom->n_reg_rules; i++) {
5372                 struct nlattr *nl_reg_rule;
5373                 const struct ieee80211_reg_rule *reg_rule;
5374                 const struct ieee80211_freq_range *freq_range;
5375                 const struct ieee80211_power_rule *power_rule;
5376                 unsigned int max_bandwidth_khz;
5377
5378                 reg_rule = &regdom->reg_rules[i];
5379                 freq_range = &reg_rule->freq_range;
5380                 power_rule = &reg_rule->power_rule;
5381
5382                 nl_reg_rule = nla_nest_start(msg, i);
5383                 if (!nl_reg_rule)
5384                         goto nla_put_failure;
5385
5386                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5387                 if (!max_bandwidth_khz)
5388                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5389                                                                   reg_rule);
5390
5391                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5392                                 reg_rule->flags) ||
5393                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5394                                 freq_range->start_freq_khz) ||
5395                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5396                                 freq_range->end_freq_khz) ||
5397                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5398                                 max_bandwidth_khz) ||
5399                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5400                                 power_rule->max_antenna_gain) ||
5401                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5402                                 power_rule->max_eirp) ||
5403                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5404                                 reg_rule->dfs_cac_ms))
5405                         goto nla_put_failure;
5406
5407                 nla_nest_end(msg, nl_reg_rule);
5408         }
5409
5410         nla_nest_end(msg, nl_reg_rules);
5411         return 0;
5412
5413 nla_put_failure:
5414         return -EMSGSIZE;
5415 }
5416
5417 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5418 {
5419         const struct ieee80211_regdomain *regdom = NULL;
5420         struct cfg80211_registered_device *rdev;
5421         struct wiphy *wiphy = NULL;
5422         struct sk_buff *msg;
5423         void *hdr;
5424
5425         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5426         if (!msg)
5427                 return -ENOBUFS;
5428
5429         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5430                              NL80211_CMD_GET_REG);
5431         if (!hdr)
5432                 goto put_failure;
5433
5434         if (info->attrs[NL80211_ATTR_WIPHY]) {
5435                 bool self_managed;
5436
5437                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5438                 if (IS_ERR(rdev)) {
5439                         nlmsg_free(msg);
5440                         return PTR_ERR(rdev);
5441                 }
5442
5443                 wiphy = &rdev->wiphy;
5444                 self_managed = wiphy->regulatory_flags &
5445                                REGULATORY_WIPHY_SELF_MANAGED;
5446                 regdom = get_wiphy_regdom(wiphy);
5447
5448                 /* a self-managed-reg device must have a private regdom */
5449                 if (WARN_ON(!regdom && self_managed)) {
5450                         nlmsg_free(msg);
5451                         return -EINVAL;
5452                 }
5453
5454                 if (regdom &&
5455                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5456                         goto nla_put_failure;
5457         }
5458
5459         if (!wiphy && reg_last_request_cell_base() &&
5460             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5461                         NL80211_USER_REG_HINT_CELL_BASE))
5462                 goto nla_put_failure;
5463
5464         rcu_read_lock();
5465
5466         if (!regdom)
5467                 regdom = rcu_dereference(cfg80211_regdomain);
5468
5469         if (nl80211_put_regdom(regdom, msg))
5470                 goto nla_put_failure_rcu;
5471
5472         rcu_read_unlock();
5473
5474         genlmsg_end(msg, hdr);
5475         return genlmsg_reply(msg, info);
5476
5477 nla_put_failure_rcu:
5478         rcu_read_unlock();
5479 nla_put_failure:
5480         genlmsg_cancel(msg, hdr);
5481 put_failure:
5482         nlmsg_free(msg);
5483         return -EMSGSIZE;
5484 }
5485
5486 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5487                                u32 seq, int flags, struct wiphy *wiphy,
5488                                const struct ieee80211_regdomain *regdom)
5489 {
5490         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5491                                    NL80211_CMD_GET_REG);
5492
5493         if (!hdr)
5494                 return -1;
5495
5496         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5497
5498         if (nl80211_put_regdom(regdom, msg))
5499                 goto nla_put_failure;
5500
5501         if (!wiphy && reg_last_request_cell_base() &&
5502             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5503                         NL80211_USER_REG_HINT_CELL_BASE))
5504                 goto nla_put_failure;
5505
5506         if (wiphy &&
5507             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5508                 goto nla_put_failure;
5509
5510         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5511             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5512                 goto nla_put_failure;
5513
5514         genlmsg_end(msg, hdr);
5515         return 0;
5516
5517 nla_put_failure:
5518         genlmsg_cancel(msg, hdr);
5519         return -EMSGSIZE;
5520 }
5521
5522 static int nl80211_get_reg_dump(struct sk_buff *skb,
5523                                 struct netlink_callback *cb)
5524 {
5525         const struct ieee80211_regdomain *regdom = NULL;
5526         struct cfg80211_registered_device *rdev;
5527         int err, reg_idx, start = cb->args[2];
5528
5529         rtnl_lock();
5530
5531         if (cfg80211_regdomain && start == 0) {
5532                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5533                                           NLM_F_MULTI, NULL,
5534                                           rtnl_dereference(cfg80211_regdomain));
5535                 if (err < 0)
5536                         goto out_err;
5537         }
5538
5539         /* the global regdom is idx 0 */
5540         reg_idx = 1;
5541         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5542                 regdom = get_wiphy_regdom(&rdev->wiphy);
5543                 if (!regdom)
5544                         continue;
5545
5546                 if (++reg_idx <= start)
5547                         continue;
5548
5549                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5550                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5551                 if (err < 0) {
5552                         reg_idx--;
5553                         break;
5554                 }
5555         }
5556
5557         cb->args[2] = reg_idx;
5558         err = skb->len;
5559 out_err:
5560         rtnl_unlock();
5561         return err;
5562 }
5563
5564 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5565 {
5566         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5567         struct nlattr *nl_reg_rule;
5568         char *alpha2;
5569         int rem_reg_rules, r;
5570         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5571         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5572         struct ieee80211_regdomain *rd;
5573
5574         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5575                 return -EINVAL;
5576
5577         if (!info->attrs[NL80211_ATTR_REG_RULES])
5578                 return -EINVAL;
5579
5580         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5581
5582         if (info->attrs[NL80211_ATTR_DFS_REGION])
5583                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5584
5585         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5586                             rem_reg_rules) {
5587                 num_rules++;
5588                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5589                         return -EINVAL;
5590         }
5591
5592         if (!reg_is_valid_request(alpha2))
5593                 return -EINVAL;
5594
5595         size_of_regd = sizeof(struct ieee80211_regdomain) +
5596                        num_rules * sizeof(struct ieee80211_reg_rule);
5597
5598         rd = kzalloc(size_of_regd, GFP_KERNEL);
5599         if (!rd)
5600                 return -ENOMEM;
5601
5602         rd->n_reg_rules = num_rules;
5603         rd->alpha2[0] = alpha2[0];
5604         rd->alpha2[1] = alpha2[1];
5605
5606         /*
5607          * Disable DFS master mode if the DFS region was
5608          * not supported or known on this kernel.
5609          */
5610         if (reg_supported_dfs_region(dfs_region))
5611                 rd->dfs_region = dfs_region;
5612
5613         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5614                             rem_reg_rules) {
5615                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5616                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5617                               reg_rule_policy);
5618                 if (r)
5619                         goto bad_reg;
5620                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5621                 if (r)
5622                         goto bad_reg;
5623
5624                 rule_idx++;
5625
5626                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5627                         r = -EINVAL;
5628                         goto bad_reg;
5629                 }
5630         }
5631
5632         r = set_regdom(rd);
5633         /* set_regdom took ownership */
5634         rd = NULL;
5635
5636  bad_reg:
5637         kfree(rd);
5638         return r;
5639 }
5640
5641 static int validate_scan_freqs(struct nlattr *freqs)
5642 {
5643         struct nlattr *attr1, *attr2;
5644         int n_channels = 0, tmp1, tmp2;
5645
5646         nla_for_each_nested(attr1, freqs, tmp1) {
5647                 n_channels++;
5648                 /*
5649                  * Some hardware has a limited channel list for
5650                  * scanning, and it is pretty much nonsensical
5651                  * to scan for a channel twice, so disallow that
5652                  * and don't require drivers to check that the
5653                  * channel list they get isn't longer than what
5654                  * they can scan, as long as they can scan all
5655                  * the channels they registered at once.
5656                  */
5657                 nla_for_each_nested(attr2, freqs, tmp2)
5658                         if (attr1 != attr2 &&
5659                             nla_get_u32(attr1) == nla_get_u32(attr2))
5660                                 return 0;
5661         }
5662
5663         return n_channels;
5664 }
5665
5666 static int nl80211_parse_random_mac(struct nlattr **attrs,
5667                                     u8 *mac_addr, u8 *mac_addr_mask)
5668 {
5669         int i;
5670
5671         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5672                 memset(mac_addr, 0, ETH_ALEN);
5673                 memset(mac_addr_mask, 0, ETH_ALEN);
5674                 mac_addr[0] = 0x2;
5675                 mac_addr_mask[0] = 0x3;
5676
5677                 return 0;
5678         }
5679
5680         /* need both or none */
5681         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5682                 return -EINVAL;
5683
5684         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5685         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5686
5687         /* don't allow or configure an mcast address */
5688         if (!is_multicast_ether_addr(mac_addr_mask) ||
5689             is_multicast_ether_addr(mac_addr))
5690                 return -EINVAL;
5691
5692         /*
5693          * allow users to pass a MAC address that has bits set outside
5694          * of the mask, but don't bother drivers with having to deal
5695          * with such bits
5696          */
5697         for (i = 0; i < ETH_ALEN; i++)
5698                 mac_addr[i] &= mac_addr_mask[i];
5699
5700         return 0;
5701 }
5702
5703 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5704 {
5705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5706         struct wireless_dev *wdev = info->user_ptr[1];
5707         struct cfg80211_scan_request *request;
5708         struct nlattr *attr;
5709         struct wiphy *wiphy;
5710         int err, tmp, n_ssids = 0, n_channels, i;
5711         size_t ie_len;
5712
5713         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5714                 return -EINVAL;
5715
5716         wiphy = &rdev->wiphy;
5717
5718         if (!rdev->ops->scan)
5719                 return -EOPNOTSUPP;
5720
5721         if (rdev->scan_req || rdev->scan_msg) {
5722                 err = -EBUSY;
5723                 goto unlock;
5724         }
5725
5726         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5727                 n_channels = validate_scan_freqs(
5728                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5729                 if (!n_channels) {
5730                         err = -EINVAL;
5731                         goto unlock;
5732                 }
5733         } else {
5734                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5735         }
5736
5737         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5738                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5739                         n_ssids++;
5740
5741         if (n_ssids > wiphy->max_scan_ssids) {
5742                 err = -EINVAL;
5743                 goto unlock;
5744         }
5745
5746         if (info->attrs[NL80211_ATTR_IE])
5747                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5748         else
5749                 ie_len = 0;
5750
5751         if (ie_len > wiphy->max_scan_ie_len) {
5752                 err = -EINVAL;
5753                 goto unlock;
5754         }
5755
5756         request = kzalloc(sizeof(*request)
5757                         + sizeof(*request->ssids) * n_ssids
5758                         + sizeof(*request->channels) * n_channels
5759                         + ie_len, GFP_KERNEL);
5760         if (!request) {
5761                 err = -ENOMEM;
5762                 goto unlock;
5763         }
5764
5765         if (n_ssids)
5766                 request->ssids = (void *)&request->channels[n_channels];
5767         request->n_ssids = n_ssids;
5768         if (ie_len) {
5769                 if (request->ssids)
5770                         request->ie = (void *)(request->ssids + n_ssids);
5771                 else
5772                         request->ie = (void *)(request->channels + n_channels);
5773         }
5774
5775         i = 0;
5776         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5777                 /* user specified, bail out if channel not found */
5778                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5779                         struct ieee80211_channel *chan;
5780
5781                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5782
5783                         if (!chan) {
5784                                 err = -EINVAL;
5785                                 goto out_free;
5786                         }
5787
5788                         /* ignore disabled channels */
5789                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5790                                 continue;
5791
5792                         request->channels[i] = chan;
5793                         i++;
5794                 }
5795         } else {
5796                 enum ieee80211_band band;
5797
5798                 /* all channels */
5799                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5800                         int j;
5801                         if (!wiphy->bands[band])
5802                                 continue;
5803                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5804                                 struct ieee80211_channel *chan;
5805
5806                                 chan = &wiphy->bands[band]->channels[j];
5807
5808                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5809                                         continue;
5810
5811                                 request->channels[i] = chan;
5812                                 i++;
5813                         }
5814                 }
5815         }
5816
5817         if (!i) {
5818                 err = -EINVAL;
5819                 goto out_free;
5820         }
5821
5822         request->n_channels = i;
5823
5824         i = 0;
5825         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5826                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5827                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5828                                 err = -EINVAL;
5829                                 goto out_free;
5830                         }
5831                         request->ssids[i].ssid_len = nla_len(attr);
5832                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5833                         i++;
5834                 }
5835         }
5836
5837         if (info->attrs[NL80211_ATTR_IE]) {
5838                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5839                 memcpy((void *)request->ie,
5840                        nla_data(info->attrs[NL80211_ATTR_IE]),
5841                        request->ie_len);
5842         }
5843
5844         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5845                 if (wiphy->bands[i])
5846                         request->rates[i] =
5847                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5848
5849         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5850                 nla_for_each_nested(attr,
5851                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5852                                     tmp) {
5853                         enum ieee80211_band band = nla_type(attr);
5854
5855                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5856                                 err = -EINVAL;
5857                                 goto out_free;
5858                         }
5859
5860                         if (!wiphy->bands[band])
5861                                 continue;
5862
5863                         err = ieee80211_get_ratemask(wiphy->bands[band],
5864                                                      nla_data(attr),
5865                                                      nla_len(attr),
5866                                                      &request->rates[band]);
5867                         if (err)
5868                                 goto out_free;
5869                 }
5870         }
5871
5872         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5873                 request->flags = nla_get_u32(
5874                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5875                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5876                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5877                         err = -EOPNOTSUPP;
5878                         goto out_free;
5879                 }
5880
5881                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5882                         if (!(wiphy->features &
5883                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5884                                 err = -EOPNOTSUPP;
5885                                 goto out_free;
5886                         }
5887
5888                         if (wdev->current_bss) {
5889                                 err = -EOPNOTSUPP;
5890                                 goto out_free;
5891                         }
5892
5893                         err = nl80211_parse_random_mac(info->attrs,
5894                                                        request->mac_addr,
5895                                                        request->mac_addr_mask);
5896                         if (err)
5897                                 goto out_free;
5898                 }
5899         }
5900
5901         request->no_cck =
5902                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5903
5904         request->wdev = wdev;
5905         request->wiphy = &rdev->wiphy;
5906         request->scan_start = jiffies;
5907
5908         rdev->scan_req = request;
5909         err = rdev_scan(rdev, request);
5910
5911         if (!err) {
5912                 nl80211_send_scan_start(rdev, wdev);
5913                 if (wdev->netdev)
5914                         dev_hold(wdev->netdev);
5915         } else {
5916  out_free:
5917                 rdev->scan_req = NULL;
5918                 kfree(request);
5919         }
5920
5921  unlock:
5922         return err;
5923 }
5924
5925 static struct cfg80211_sched_scan_request *
5926 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5927                          struct nlattr **attrs)
5928 {
5929         struct cfg80211_sched_scan_request *request;
5930         struct nlattr *attr;
5931         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5932         u32 interval;
5933         enum ieee80211_band band;
5934         size_t ie_len;
5935         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5936         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5937
5938         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5939                 return ERR_PTR(-EINVAL);
5940
5941         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5942                 return ERR_PTR(-EINVAL);
5943
5944         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5945         if (interval == 0)
5946                 return ERR_PTR(-EINVAL);
5947
5948         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5949                 n_channels = validate_scan_freqs(
5950                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5951                 if (!n_channels)
5952                         return ERR_PTR(-EINVAL);
5953         } else {
5954                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5955         }
5956
5957         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5958                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5959                                     tmp)
5960                         n_ssids++;
5961
5962         if (n_ssids > wiphy->max_sched_scan_ssids)
5963                 return ERR_PTR(-EINVAL);
5964
5965         /*
5966          * First, count the number of 'real' matchsets. Due to an issue with
5967          * the old implementation, matchsets containing only the RSSI attribute
5968          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5969          * RSSI for all matchsets, rather than their own matchset for reporting
5970          * all APs with a strong RSSI. This is needed to be compatible with
5971          * older userspace that treated a matchset with only the RSSI as the
5972          * global RSSI for all other matchsets - if there are other matchsets.
5973          */
5974         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5975                 nla_for_each_nested(attr,
5976                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5977                                     tmp) {
5978                         struct nlattr *rssi;
5979
5980                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5981                                         nla_data(attr), nla_len(attr),
5982                                         nl80211_match_policy);
5983                         if (err)
5984                                 return ERR_PTR(err);
5985                         /* add other standalone attributes here */
5986                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5987                                 n_match_sets++;
5988                                 continue;
5989                         }
5990                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5991                         if (rssi)
5992                                 default_match_rssi = nla_get_s32(rssi);
5993                 }
5994         }
5995
5996         /* However, if there's no other matchset, add the RSSI one */
5997         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5998                 n_match_sets = 1;
5999
6000         if (n_match_sets > wiphy->max_match_sets)
6001                 return ERR_PTR(-EINVAL);
6002
6003         if (attrs[NL80211_ATTR_IE])
6004                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6005         else
6006                 ie_len = 0;
6007
6008         if (ie_len > wiphy->max_sched_scan_ie_len)
6009                 return ERR_PTR(-EINVAL);
6010
6011         request = kzalloc(sizeof(*request)
6012                         + sizeof(*request->ssids) * n_ssids
6013                         + sizeof(*request->match_sets) * n_match_sets
6014                         + sizeof(*request->channels) * n_channels
6015                         + ie_len, GFP_KERNEL);
6016         if (!request)
6017                 return ERR_PTR(-ENOMEM);
6018
6019         if (n_ssids)
6020                 request->ssids = (void *)&request->channels[n_channels];
6021         request->n_ssids = n_ssids;
6022         if (ie_len) {
6023                 if (request->ssids)
6024                         request->ie = (void *)(request->ssids + n_ssids);
6025                 else
6026                         request->ie = (void *)(request->channels + n_channels);
6027         }
6028
6029         if (n_match_sets) {
6030                 if (request->ie)
6031                         request->match_sets = (void *)(request->ie + ie_len);
6032                 else if (request->ssids)
6033                         request->match_sets =
6034                                 (void *)(request->ssids + n_ssids);
6035                 else
6036                         request->match_sets =
6037                                 (void *)(request->channels + n_channels);
6038         }
6039         request->n_match_sets = n_match_sets;
6040
6041         i = 0;
6042         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6043                 /* user specified, bail out if channel not found */
6044                 nla_for_each_nested(attr,
6045                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6046                                     tmp) {
6047                         struct ieee80211_channel *chan;
6048
6049                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6050
6051                         if (!chan) {
6052                                 err = -EINVAL;
6053                                 goto out_free;
6054                         }
6055
6056                         /* ignore disabled channels */
6057                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6058                                 continue;
6059
6060                         request->channels[i] = chan;
6061                         i++;
6062                 }
6063         } else {
6064                 /* all channels */
6065                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6066                         int j;
6067                         if (!wiphy->bands[band])
6068                                 continue;
6069                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6070                                 struct ieee80211_channel *chan;
6071
6072                                 chan = &wiphy->bands[band]->channels[j];
6073
6074                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6075                                         continue;
6076
6077                                 request->channels[i] = chan;
6078                                 i++;
6079                         }
6080                 }
6081         }
6082
6083         if (!i) {
6084                 err = -EINVAL;
6085                 goto out_free;
6086         }
6087
6088         request->n_channels = i;
6089
6090         i = 0;
6091         if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6092                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6093                                     tmp) {
6094                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6095                                 err = -EINVAL;
6096                                 goto out_free;
6097                         }
6098                         request->ssids[i].ssid_len = nla_len(attr);
6099                         memcpy(request->ssids[i].ssid, nla_data(attr),
6100                                nla_len(attr));
6101                         i++;
6102                 }
6103         }
6104
6105         i = 0;
6106         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6107                 nla_for_each_nested(attr,
6108                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6109                                     tmp) {
6110                         struct nlattr *ssid, *rssi;
6111
6112                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6113                                         nla_data(attr), nla_len(attr),
6114                                         nl80211_match_policy);
6115                         if (err)
6116                                 goto out_free;
6117                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6118                         if (ssid) {
6119                                 if (WARN_ON(i >= n_match_sets)) {
6120                                         /* this indicates a programming error,
6121                                          * the loop above should have verified
6122                                          * things properly
6123                                          */
6124                                         err = -EINVAL;
6125                                         goto out_free;
6126                                 }
6127
6128                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6129                                         err = -EINVAL;
6130                                         goto out_free;
6131                                 }
6132                                 memcpy(request->match_sets[i].ssid.ssid,
6133                                        nla_data(ssid), nla_len(ssid));
6134                                 request->match_sets[i].ssid.ssid_len =
6135                                         nla_len(ssid);
6136                                 /* special attribute - old implemenation w/a */
6137                                 request->match_sets[i].rssi_thold =
6138                                         default_match_rssi;
6139                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6140                                 if (rssi)
6141                                         request->match_sets[i].rssi_thold =
6142                                                 nla_get_s32(rssi);
6143                         }
6144                         i++;
6145                 }
6146
6147                 /* there was no other matchset, so the RSSI one is alone */
6148                 if (i == 0 && n_match_sets)
6149                         request->match_sets[0].rssi_thold = default_match_rssi;
6150
6151                 request->min_rssi_thold = INT_MAX;
6152                 for (i = 0; i < n_match_sets; i++)
6153                         request->min_rssi_thold =
6154                                 min(request->match_sets[i].rssi_thold,
6155                                     request->min_rssi_thold);
6156         } else {
6157                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6158         }
6159
6160         if (ie_len) {
6161                 request->ie_len = ie_len;
6162                 memcpy((void *)request->ie,
6163                        nla_data(attrs[NL80211_ATTR_IE]),
6164                        request->ie_len);
6165         }
6166
6167         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6168                 request->flags = nla_get_u32(
6169                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6170                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6171                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6172                         err = -EOPNOTSUPP;
6173                         goto out_free;
6174                 }
6175
6176                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6177                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6178
6179                         if (!wdev) /* must be net-detect */
6180                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6181
6182                         if (!(wiphy->features & flg)) {
6183                                 err = -EOPNOTSUPP;
6184                                 goto out_free;
6185                         }
6186
6187                         if (wdev && wdev->current_bss) {
6188                                 err = -EOPNOTSUPP;
6189                                 goto out_free;
6190                         }
6191
6192                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6193                                                        request->mac_addr_mask);
6194                         if (err)
6195                                 goto out_free;
6196                 }
6197         }
6198
6199         request->interval = interval;
6200         request->scan_start = jiffies;
6201
6202         return request;
6203
6204 out_free:
6205         kfree(request);
6206         return ERR_PTR(err);
6207 }
6208
6209 static int nl80211_start_sched_scan(struct sk_buff *skb,
6210                                     struct genl_info *info)
6211 {
6212         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6213         struct net_device *dev = info->user_ptr[1];
6214         struct wireless_dev *wdev = dev->ieee80211_ptr;
6215         struct cfg80211_sched_scan_request *sched_scan_req;
6216         int err;
6217
6218         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6219             !rdev->ops->sched_scan_start)
6220                 return -EOPNOTSUPP;
6221
6222         if (rdev->sched_scan_req)
6223                 return -EINPROGRESS;
6224
6225         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6226                                                   info->attrs);
6227
6228         err = PTR_ERR_OR_ZERO(sched_scan_req);
6229         if (err)
6230                 goto out_err;
6231
6232         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6233         if (err)
6234                 goto out_free;
6235
6236         sched_scan_req->dev = dev;
6237         sched_scan_req->wiphy = &rdev->wiphy;
6238
6239         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6240                 sched_scan_req->owner_nlportid = info->snd_portid;
6241
6242         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6243
6244         nl80211_send_sched_scan(rdev, dev,
6245                                 NL80211_CMD_START_SCHED_SCAN);
6246         return 0;
6247
6248 out_free:
6249         kfree(sched_scan_req);
6250 out_err:
6251         return err;
6252 }
6253
6254 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6255                                    struct genl_info *info)
6256 {
6257         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6258
6259         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6260             !rdev->ops->sched_scan_stop)
6261                 return -EOPNOTSUPP;
6262
6263         return __cfg80211_stop_sched_scan(rdev, false);
6264 }
6265
6266 static int nl80211_start_radar_detection(struct sk_buff *skb,
6267                                          struct genl_info *info)
6268 {
6269         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6270         struct net_device *dev = info->user_ptr[1];
6271         struct wireless_dev *wdev = dev->ieee80211_ptr;
6272         struct cfg80211_chan_def chandef;
6273         enum nl80211_dfs_regions dfs_region;
6274         unsigned int cac_time_ms;
6275         int err;
6276
6277         dfs_region = reg_get_dfs_region(wdev->wiphy);
6278         if (dfs_region == NL80211_DFS_UNSET)
6279                 return -EINVAL;
6280
6281         err = nl80211_parse_chandef(rdev, info, &chandef);
6282         if (err)
6283                 return err;
6284
6285         if (netif_carrier_ok(dev))
6286                 return -EBUSY;
6287
6288         if (wdev->cac_started)
6289                 return -EBUSY;
6290
6291         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6292                                             wdev->iftype);
6293         if (err < 0)
6294                 return err;
6295
6296         if (err == 0)
6297                 return -EINVAL;
6298
6299         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6300                 return -EINVAL;
6301
6302         if (!rdev->ops->start_radar_detection)
6303                 return -EOPNOTSUPP;
6304
6305         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6306         if (WARN_ON(!cac_time_ms))
6307                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6308
6309         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6310                                                cac_time_ms);
6311         if (!err) {
6312                 wdev->chandef = chandef;
6313                 wdev->cac_started = true;
6314                 wdev->cac_start_time = jiffies;
6315                 wdev->cac_time_ms = cac_time_ms;
6316         }
6317         return err;
6318 }
6319
6320 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6321 {
6322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6323         struct net_device *dev = info->user_ptr[1];
6324         struct wireless_dev *wdev = dev->ieee80211_ptr;
6325         struct cfg80211_csa_settings params;
6326         /* csa_attrs is defined static to avoid waste of stack size - this
6327          * function is called under RTNL lock, so this should not be a problem.
6328          */
6329         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6330         int err;
6331         bool need_new_beacon = false;
6332         int len, i;
6333         u32 cs_count;
6334
6335         if (!rdev->ops->channel_switch ||
6336             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6337                 return -EOPNOTSUPP;
6338
6339         switch (dev->ieee80211_ptr->iftype) {
6340         case NL80211_IFTYPE_AP:
6341         case NL80211_IFTYPE_P2P_GO:
6342                 need_new_beacon = true;
6343
6344                 /* useless if AP is not running */
6345                 if (!wdev->beacon_interval)
6346                         return -ENOTCONN;
6347                 break;
6348         case NL80211_IFTYPE_ADHOC:
6349                 if (!wdev->ssid_len)
6350                         return -ENOTCONN;
6351                 break;
6352         case NL80211_IFTYPE_MESH_POINT:
6353                 if (!wdev->mesh_id_len)
6354                         return -ENOTCONN;
6355                 break;
6356         default:
6357                 return -EOPNOTSUPP;
6358         }
6359
6360         memset(&params, 0, sizeof(params));
6361
6362         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6363             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6364                 return -EINVAL;
6365
6366         /* only important for AP, IBSS and mesh create IEs internally */
6367         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6368                 return -EINVAL;
6369
6370         /* Even though the attribute is u32, the specification says
6371          * u8, so let's make sure we don't overflow.
6372          */
6373         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6374         if (cs_count > 255)
6375                 return -EINVAL;
6376
6377         params.count = cs_count;
6378
6379         if (!need_new_beacon)
6380                 goto skip_beacons;
6381
6382         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6383         if (err)
6384                 return err;
6385
6386         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6387                                info->attrs[NL80211_ATTR_CSA_IES],
6388                                nl80211_policy);
6389         if (err)
6390                 return err;
6391
6392         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6393         if (err)
6394                 return err;
6395
6396         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6397                 return -EINVAL;
6398
6399         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6400         if (!len || (len % sizeof(u16)))
6401                 return -EINVAL;
6402
6403         params.n_counter_offsets_beacon = len / sizeof(u16);
6404         if (rdev->wiphy.max_num_csa_counters &&
6405             (params.n_counter_offsets_beacon >
6406              rdev->wiphy.max_num_csa_counters))
6407                 return -EINVAL;
6408
6409         params.counter_offsets_beacon =
6410                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6411
6412         /* sanity checks - counters should fit and be the same */
6413         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6414                 u16 offset = params.counter_offsets_beacon[i];
6415
6416                 if (offset >= params.beacon_csa.tail_len)
6417                         return -EINVAL;
6418
6419                 if (params.beacon_csa.tail[offset] != params.count)
6420                         return -EINVAL;
6421         }
6422
6423         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6424                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6425                 if (!len || (len % sizeof(u16)))
6426                         return -EINVAL;
6427
6428                 params.n_counter_offsets_presp = len / sizeof(u16);
6429                 if (rdev->wiphy.max_num_csa_counters &&
6430                     (params.n_counter_offsets_beacon >
6431                      rdev->wiphy.max_num_csa_counters))
6432                         return -EINVAL;
6433
6434                 params.counter_offsets_presp =
6435                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6436
6437                 /* sanity checks - counters should fit and be the same */
6438                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6439                         u16 offset = params.counter_offsets_presp[i];
6440
6441                         if (offset >= params.beacon_csa.probe_resp_len)
6442                                 return -EINVAL;
6443
6444                         if (params.beacon_csa.probe_resp[offset] !=
6445                             params.count)
6446                                 return -EINVAL;
6447                 }
6448         }
6449
6450 skip_beacons:
6451         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6452         if (err)
6453                 return err;
6454
6455         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6456                                      wdev->iftype))
6457                 return -EINVAL;
6458
6459         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6460                                             &params.chandef,
6461                                             wdev->iftype);
6462         if (err < 0)
6463                 return err;
6464
6465         if (err > 0)
6466                 params.radar_required = true;
6467
6468         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6469                 params.block_tx = true;
6470
6471         wdev_lock(wdev);
6472         err = rdev_channel_switch(rdev, dev, &params);
6473         wdev_unlock(wdev);
6474
6475         return err;
6476 }
6477
6478 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6479                             u32 seq, int flags,
6480                             struct cfg80211_registered_device *rdev,
6481                             struct wireless_dev *wdev,
6482                             struct cfg80211_internal_bss *intbss)
6483 {
6484         struct cfg80211_bss *res = &intbss->pub;
6485         const struct cfg80211_bss_ies *ies;
6486         void *hdr;
6487         struct nlattr *bss;
6488
6489         ASSERT_WDEV_LOCK(wdev);
6490
6491         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6492                              NL80211_CMD_NEW_SCAN_RESULTS);
6493         if (!hdr)
6494                 return -1;
6495
6496         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6497
6498         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6499                 goto nla_put_failure;
6500         if (wdev->netdev &&
6501             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6502                 goto nla_put_failure;
6503         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6504                 goto nla_put_failure;
6505
6506         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6507         if (!bss)
6508                 goto nla_put_failure;
6509         if ((!is_zero_ether_addr(res->bssid) &&
6510              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6511                 goto nla_put_failure;
6512
6513         rcu_read_lock();
6514         /* indicate whether we have probe response data or not */
6515         if (rcu_access_pointer(res->proberesp_ies) &&
6516             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6517                 goto fail_unlock_rcu;
6518
6519         /* this pointer prefers to be pointed to probe response data
6520          * but is always valid
6521          */
6522         ies = rcu_dereference(res->ies);
6523         if (ies) {
6524                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6525                         goto fail_unlock_rcu;
6526                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6527                                         ies->len, ies->data))
6528                         goto fail_unlock_rcu;
6529         }
6530
6531         /* and this pointer is always (unless driver didn't know) beacon data */
6532         ies = rcu_dereference(res->beacon_ies);
6533         if (ies && ies->from_beacon) {
6534                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6535                         goto fail_unlock_rcu;
6536                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6537                                         ies->len, ies->data))
6538                         goto fail_unlock_rcu;
6539         }
6540         rcu_read_unlock();
6541
6542         if (res->beacon_interval &&
6543             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6544                 goto nla_put_failure;
6545         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6546             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6547             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6548             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6549                         jiffies_to_msecs(jiffies - intbss->ts)))
6550                 goto nla_put_failure;
6551
6552         switch (rdev->wiphy.signal_type) {
6553         case CFG80211_SIGNAL_TYPE_MBM:
6554                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6555                         goto nla_put_failure;
6556                 break;
6557         case CFG80211_SIGNAL_TYPE_UNSPEC:
6558                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6559                         goto nla_put_failure;
6560                 break;
6561         default:
6562                 break;
6563         }
6564
6565         switch (wdev->iftype) {
6566         case NL80211_IFTYPE_P2P_CLIENT:
6567         case NL80211_IFTYPE_STATION:
6568                 if (intbss == wdev->current_bss &&
6569                     nla_put_u32(msg, NL80211_BSS_STATUS,
6570                                 NL80211_BSS_STATUS_ASSOCIATED))
6571                         goto nla_put_failure;
6572                 break;
6573         case NL80211_IFTYPE_ADHOC:
6574                 if (intbss == wdev->current_bss &&
6575                     nla_put_u32(msg, NL80211_BSS_STATUS,
6576                                 NL80211_BSS_STATUS_IBSS_JOINED))
6577                         goto nla_put_failure;
6578                 break;
6579         default:
6580                 break;
6581         }
6582
6583         nla_nest_end(msg, bss);
6584
6585         genlmsg_end(msg, hdr);
6586         return 0;
6587
6588  fail_unlock_rcu:
6589         rcu_read_unlock();
6590  nla_put_failure:
6591         genlmsg_cancel(msg, hdr);
6592         return -EMSGSIZE;
6593 }
6594
6595 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6596 {
6597         struct cfg80211_registered_device *rdev;
6598         struct cfg80211_internal_bss *scan;
6599         struct wireless_dev *wdev;
6600         int start = cb->args[2], idx = 0;
6601         int err;
6602
6603         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6604         if (err)
6605                 return err;
6606
6607         wdev_lock(wdev);
6608         spin_lock_bh(&rdev->bss_lock);
6609         cfg80211_bss_expire(rdev);
6610
6611         cb->seq = rdev->bss_generation;
6612
6613         list_for_each_entry(scan, &rdev->bss_list, list) {
6614                 if (++idx <= start)
6615                         continue;
6616                 if (nl80211_send_bss(skb, cb,
6617                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6618                                 rdev, wdev, scan) < 0) {
6619                         idx--;
6620                         break;
6621                 }
6622         }
6623
6624         spin_unlock_bh(&rdev->bss_lock);
6625         wdev_unlock(wdev);
6626
6627         cb->args[2] = idx;
6628         nl80211_finish_wdev_dump(rdev);
6629
6630         return skb->len;
6631 }
6632
6633 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6634                                int flags, struct net_device *dev,
6635                                bool allow_radio_stats,
6636                                struct survey_info *survey)
6637 {
6638         void *hdr;
6639         struct nlattr *infoattr;
6640
6641         /* skip radio stats if userspace didn't request them */
6642         if (!survey->channel && !allow_radio_stats)
6643                 return 0;
6644
6645         hdr = nl80211hdr_put(msg, portid, seq, flags,
6646                              NL80211_CMD_NEW_SURVEY_RESULTS);
6647         if (!hdr)
6648                 return -ENOMEM;
6649
6650         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6651                 goto nla_put_failure;
6652
6653         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6654         if (!infoattr)
6655                 goto nla_put_failure;
6656
6657         if (survey->channel &&
6658             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6659                         survey->channel->center_freq))
6660                 goto nla_put_failure;
6661
6662         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6663             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6664                 goto nla_put_failure;
6665         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6666             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6667                 goto nla_put_failure;
6668         if ((survey->filled & SURVEY_INFO_TIME) &&
6669             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6670                         survey->time))
6671                 goto nla_put_failure;
6672         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6673             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6674                         survey->time_busy))
6675                 goto nla_put_failure;
6676         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6677             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6678                         survey->time_ext_busy))
6679                 goto nla_put_failure;
6680         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6681             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6682                         survey->time_rx))
6683                 goto nla_put_failure;
6684         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6685             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6686                         survey->time_tx))
6687                 goto nla_put_failure;
6688         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6689             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6690                         survey->time_scan))
6691                 goto nla_put_failure;
6692
6693         nla_nest_end(msg, infoattr);
6694
6695         genlmsg_end(msg, hdr);
6696         return 0;
6697
6698  nla_put_failure:
6699         genlmsg_cancel(msg, hdr);
6700         return -EMSGSIZE;
6701 }
6702
6703 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6704 {
6705         struct survey_info survey;
6706         struct cfg80211_registered_device *rdev;
6707         struct wireless_dev *wdev;
6708         int survey_idx = cb->args[2];
6709         int res;
6710         bool radio_stats;
6711
6712         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6713         if (res)
6714                 return res;
6715
6716         /* prepare_wdev_dump parsed the attributes */
6717         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6718
6719         if (!wdev->netdev) {
6720                 res = -EINVAL;
6721                 goto out_err;
6722         }
6723
6724         if (!rdev->ops->dump_survey) {
6725                 res = -EOPNOTSUPP;
6726                 goto out_err;
6727         }
6728
6729         while (1) {
6730                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6731                 if (res == -ENOENT)
6732                         break;
6733                 if (res)
6734                         goto out_err;
6735
6736                 /* don't send disabled channels, but do send non-channel data */
6737                 if (survey.channel &&
6738                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6739                         survey_idx++;
6740                         continue;
6741                 }
6742
6743                 if (nl80211_send_survey(skb,
6744                                 NETLINK_CB(cb->skb).portid,
6745                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6746                                 wdev->netdev, radio_stats, &survey) < 0)
6747                         goto out;
6748                 survey_idx++;
6749         }
6750
6751  out:
6752         cb->args[2] = survey_idx;
6753         res = skb->len;
6754  out_err:
6755         nl80211_finish_wdev_dump(rdev);
6756         return res;
6757 }
6758
6759 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6760 {
6761         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6762                                   NL80211_WPA_VERSION_2));
6763 }
6764
6765 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6766 {
6767         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6768         struct net_device *dev = info->user_ptr[1];
6769         struct ieee80211_channel *chan;
6770         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6771         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6772         enum nl80211_auth_type auth_type;
6773         struct key_parse key;
6774         bool local_state_change;
6775
6776         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6777                 return -EINVAL;
6778
6779         if (!info->attrs[NL80211_ATTR_MAC])
6780                 return -EINVAL;
6781
6782         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6783                 return -EINVAL;
6784
6785         if (!info->attrs[NL80211_ATTR_SSID])
6786                 return -EINVAL;
6787
6788         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6789                 return -EINVAL;
6790
6791         err = nl80211_parse_key(info, &key);
6792         if (err)
6793                 return err;
6794
6795         if (key.idx >= 0) {
6796                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6797                         return -EINVAL;
6798                 if (!key.p.key || !key.p.key_len)
6799                         return -EINVAL;
6800                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6801                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6802                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6803                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6804                         return -EINVAL;
6805                 if (key.idx > 4)
6806                         return -EINVAL;
6807         } else {
6808                 key.p.key_len = 0;
6809                 key.p.key = NULL;
6810         }
6811
6812         if (key.idx >= 0) {
6813                 int i;
6814                 bool ok = false;
6815                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6816                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6817                                 ok = true;
6818                                 break;
6819                         }
6820                 }
6821                 if (!ok)
6822                         return -EINVAL;
6823         }
6824
6825         if (!rdev->ops->auth)
6826                 return -EOPNOTSUPP;
6827
6828         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6829             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6830                 return -EOPNOTSUPP;
6831
6832         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6833         chan = nl80211_get_valid_chan(&rdev->wiphy,
6834                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6835         if (!chan)
6836                 return -EINVAL;
6837
6838         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6839         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6840
6841         if (info->attrs[NL80211_ATTR_IE]) {
6842                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6843                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6844         }
6845
6846         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6847         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6848                 return -EINVAL;
6849
6850         if (auth_type == NL80211_AUTHTYPE_SAE &&
6851             !info->attrs[NL80211_ATTR_SAE_DATA])
6852                 return -EINVAL;
6853
6854         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6855                 if (auth_type != NL80211_AUTHTYPE_SAE)
6856                         return -EINVAL;
6857                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6858                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6859                 /* need to include at least Auth Transaction and Status Code */
6860                 if (sae_data_len < 4)
6861                         return -EINVAL;
6862         }
6863
6864         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6865
6866         /*
6867          * Since we no longer track auth state, ignore
6868          * requests to only change local state.
6869          */
6870         if (local_state_change)
6871                 return 0;
6872
6873         wdev_lock(dev->ieee80211_ptr);
6874         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6875                                  ssid, ssid_len, ie, ie_len,
6876                                  key.p.key, key.p.key_len, key.idx,
6877                                  sae_data, sae_data_len);
6878         wdev_unlock(dev->ieee80211_ptr);
6879         return err;
6880 }
6881
6882 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6883                                    struct genl_info *info,
6884                                    struct cfg80211_crypto_settings *settings,
6885                                    int cipher_limit)
6886 {
6887         memset(settings, 0, sizeof(*settings));
6888
6889         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6890
6891         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6892                 u16 proto;
6893                 proto = nla_get_u16(
6894                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6895                 settings->control_port_ethertype = cpu_to_be16(proto);
6896                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6897                     proto != ETH_P_PAE)
6898                         return -EINVAL;
6899                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6900                         settings->control_port_no_encrypt = true;
6901         } else
6902                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6903
6904         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6905                 void *data;
6906                 int len, i;
6907
6908                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6909                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6910                 settings->n_ciphers_pairwise = len / sizeof(u32);
6911
6912                 if (len % sizeof(u32))
6913                         return -EINVAL;
6914
6915                 if (settings->n_ciphers_pairwise > cipher_limit)
6916                         return -EINVAL;
6917
6918                 memcpy(settings->ciphers_pairwise, data, len);
6919
6920                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6921                         if (!cfg80211_supported_cipher_suite(
6922                                         &rdev->wiphy,
6923                                         settings->ciphers_pairwise[i]))
6924                                 return -EINVAL;
6925         }
6926
6927         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6928                 settings->cipher_group =
6929                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6930                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6931                                                      settings->cipher_group))
6932                         return -EINVAL;
6933         }
6934
6935         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6936                 settings->wpa_versions =
6937                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6938                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6939                         return -EINVAL;
6940         }
6941
6942         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6943                 void *data;
6944                 int len;
6945
6946                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6947                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6948                 settings->n_akm_suites = len / sizeof(u32);
6949
6950                 if (len % sizeof(u32))
6951                         return -EINVAL;
6952
6953                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6954                         return -EINVAL;
6955
6956                 memcpy(settings->akm_suites, data, len);
6957         }
6958
6959         return 0;
6960 }
6961
6962 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6963 {
6964         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6965         struct net_device *dev = info->user_ptr[1];
6966         struct ieee80211_channel *chan;
6967         struct cfg80211_assoc_request req = {};
6968         const u8 *bssid, *ssid;
6969         int err, ssid_len = 0;
6970
6971         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6972                 return -EINVAL;
6973
6974         if (!info->attrs[NL80211_ATTR_MAC] ||
6975             !info->attrs[NL80211_ATTR_SSID] ||
6976             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6977                 return -EINVAL;
6978
6979         if (!rdev->ops->assoc)
6980                 return -EOPNOTSUPP;
6981
6982         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6983             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6984                 return -EOPNOTSUPP;
6985
6986         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6987
6988         chan = nl80211_get_valid_chan(&rdev->wiphy,
6989                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6990         if (!chan)
6991                 return -EINVAL;
6992
6993         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6994         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6995
6996         if (info->attrs[NL80211_ATTR_IE]) {
6997                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6998                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6999         }
7000
7001         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7002                 enum nl80211_mfp mfp =
7003                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7004                 if (mfp == NL80211_MFP_REQUIRED)
7005                         req.use_mfp = true;
7006                 else if (mfp != NL80211_MFP_NO)
7007                         return -EINVAL;
7008         }
7009
7010         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7011                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7012
7013         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7014                 req.flags |= ASSOC_REQ_DISABLE_HT;
7015
7016         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7017                 memcpy(&req.ht_capa_mask,
7018                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7019                        sizeof(req.ht_capa_mask));
7020
7021         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7022                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7023                         return -EINVAL;
7024                 memcpy(&req.ht_capa,
7025                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7026                        sizeof(req.ht_capa));
7027         }
7028
7029         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7030                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7031
7032         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7033                 memcpy(&req.vht_capa_mask,
7034                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7035                        sizeof(req.vht_capa_mask));
7036
7037         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7038                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7039                         return -EINVAL;
7040                 memcpy(&req.vht_capa,
7041                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7042                        sizeof(req.vht_capa));
7043         }
7044
7045         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7046                 if (!(rdev->wiphy.features &
7047                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7048                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7049                         return -EINVAL;
7050                 req.flags |= ASSOC_REQ_USE_RRM;
7051         }
7052
7053         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7054         if (!err) {
7055                 wdev_lock(dev->ieee80211_ptr);
7056                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7057                                           ssid, ssid_len, &req);
7058                 wdev_unlock(dev->ieee80211_ptr);
7059         }
7060
7061         return err;
7062 }
7063
7064 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7065 {
7066         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7067         struct net_device *dev = info->user_ptr[1];
7068         const u8 *ie = NULL, *bssid;
7069         int ie_len = 0, err;
7070         u16 reason_code;
7071         bool local_state_change;
7072
7073         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7074                 return -EINVAL;
7075
7076         if (!info->attrs[NL80211_ATTR_MAC])
7077                 return -EINVAL;
7078
7079         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7080                 return -EINVAL;
7081
7082         if (!rdev->ops->deauth)
7083                 return -EOPNOTSUPP;
7084
7085         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7086             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7087                 return -EOPNOTSUPP;
7088
7089         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7090
7091         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7092         if (reason_code == 0) {
7093                 /* Reason Code 0 is reserved */
7094                 return -EINVAL;
7095         }
7096
7097         if (info->attrs[NL80211_ATTR_IE]) {
7098                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7099                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7100         }
7101
7102         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7103
7104         wdev_lock(dev->ieee80211_ptr);
7105         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7106                                    local_state_change);
7107         wdev_unlock(dev->ieee80211_ptr);
7108         return err;
7109 }
7110
7111 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7112 {
7113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7114         struct net_device *dev = info->user_ptr[1];
7115         const u8 *ie = NULL, *bssid;
7116         int ie_len = 0, err;
7117         u16 reason_code;
7118         bool local_state_change;
7119
7120         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7121                 return -EINVAL;
7122
7123         if (!info->attrs[NL80211_ATTR_MAC])
7124                 return -EINVAL;
7125
7126         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7127                 return -EINVAL;
7128
7129         if (!rdev->ops->disassoc)
7130                 return -EOPNOTSUPP;
7131
7132         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7133             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7134                 return -EOPNOTSUPP;
7135
7136         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7137
7138         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7139         if (reason_code == 0) {
7140                 /* Reason Code 0 is reserved */
7141                 return -EINVAL;
7142         }
7143
7144         if (info->attrs[NL80211_ATTR_IE]) {
7145                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7146                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7147         }
7148
7149         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7150
7151         wdev_lock(dev->ieee80211_ptr);
7152         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7153                                      local_state_change);
7154         wdev_unlock(dev->ieee80211_ptr);
7155         return err;
7156 }
7157
7158 static bool
7159 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7160                          int mcast_rate[IEEE80211_NUM_BANDS],
7161                          int rateval)
7162 {
7163         struct wiphy *wiphy = &rdev->wiphy;
7164         bool found = false;
7165         int band, i;
7166
7167         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7168                 struct ieee80211_supported_band *sband;
7169
7170                 sband = wiphy->bands[band];
7171                 if (!sband)
7172                         continue;
7173
7174                 for (i = 0; i < sband->n_bitrates; i++) {
7175                         if (sband->bitrates[i].bitrate == rateval) {
7176                                 mcast_rate[band] = i + 1;
7177                                 found = true;
7178                                 break;
7179                         }
7180                 }
7181         }
7182
7183         return found;
7184 }
7185
7186 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7187 {
7188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7189         struct net_device *dev = info->user_ptr[1];
7190         struct cfg80211_ibss_params ibss;
7191         struct wiphy *wiphy;
7192         struct cfg80211_cached_keys *connkeys = NULL;
7193         int err;
7194
7195         memset(&ibss, 0, sizeof(ibss));
7196
7197         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7198                 return -EINVAL;
7199
7200         if (!info->attrs[NL80211_ATTR_SSID] ||
7201             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7202                 return -EINVAL;
7203
7204         ibss.beacon_interval = 100;
7205
7206         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7207                 ibss.beacon_interval =
7208                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7209                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7210                         return -EINVAL;
7211         }
7212
7213         if (!rdev->ops->join_ibss)
7214                 return -EOPNOTSUPP;
7215
7216         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7217                 return -EOPNOTSUPP;
7218
7219         wiphy = &rdev->wiphy;
7220
7221         if (info->attrs[NL80211_ATTR_MAC]) {
7222                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7223
7224                 if (!is_valid_ether_addr(ibss.bssid))
7225                         return -EINVAL;
7226         }
7227         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7228         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7229
7230         if (info->attrs[NL80211_ATTR_IE]) {
7231                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7232                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7233         }
7234
7235         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7236         if (err)
7237                 return err;
7238
7239         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7240                                      NL80211_IFTYPE_ADHOC))
7241                 return -EINVAL;
7242
7243         switch (ibss.chandef.width) {
7244         case NL80211_CHAN_WIDTH_5:
7245         case NL80211_CHAN_WIDTH_10:
7246         case NL80211_CHAN_WIDTH_20_NOHT:
7247                 break;
7248         case NL80211_CHAN_WIDTH_20:
7249         case NL80211_CHAN_WIDTH_40:
7250                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7251                         break;
7252         default:
7253                 return -EINVAL;
7254         }
7255
7256         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7257         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7258
7259         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7260                 u8 *rates =
7261                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7262                 int n_rates =
7263                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7264                 struct ieee80211_supported_band *sband =
7265                         wiphy->bands[ibss.chandef.chan->band];
7266
7267                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7268                                              &ibss.basic_rates);
7269                 if (err)
7270                         return err;
7271         }
7272
7273         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7274                 memcpy(&ibss.ht_capa_mask,
7275                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7276                        sizeof(ibss.ht_capa_mask));
7277
7278         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7279                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7280                         return -EINVAL;
7281                 memcpy(&ibss.ht_capa,
7282                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7283                        sizeof(ibss.ht_capa));
7284         }
7285
7286         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7287             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7288                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7289                 return -EINVAL;
7290
7291         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7292                 bool no_ht = false;
7293
7294                 connkeys = nl80211_parse_connkeys(rdev,
7295                                           info->attrs[NL80211_ATTR_KEYS],
7296                                           &no_ht);
7297                 if (IS_ERR(connkeys))
7298                         return PTR_ERR(connkeys);
7299
7300                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7301                     no_ht) {
7302                         kfree(connkeys);
7303                         return -EINVAL;
7304                 }
7305         }
7306
7307         ibss.control_port =
7308                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7309
7310         ibss.userspace_handles_dfs =
7311                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7312
7313         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7314         if (err)
7315                 kzfree(connkeys);
7316         return err;
7317 }
7318
7319 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7320 {
7321         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7322         struct net_device *dev = info->user_ptr[1];
7323
7324         if (!rdev->ops->leave_ibss)
7325                 return -EOPNOTSUPP;
7326
7327         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7328                 return -EOPNOTSUPP;
7329
7330         return cfg80211_leave_ibss(rdev, dev, false);
7331 }
7332
7333 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7334 {
7335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7336         struct net_device *dev = info->user_ptr[1];
7337         int mcast_rate[IEEE80211_NUM_BANDS];
7338         u32 nla_rate;
7339         int err;
7340
7341         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7342             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7343                 return -EOPNOTSUPP;
7344
7345         if (!rdev->ops->set_mcast_rate)
7346                 return -EOPNOTSUPP;
7347
7348         memset(mcast_rate, 0, sizeof(mcast_rate));
7349
7350         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7351                 return -EINVAL;
7352
7353         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7354         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7355                 return -EINVAL;
7356
7357         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7358
7359         return err;
7360 }
7361
7362 static struct sk_buff *
7363 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7364                             int approxlen, u32 portid, u32 seq,
7365                             enum nl80211_commands cmd,
7366                             enum nl80211_attrs attr,
7367                             const struct nl80211_vendor_cmd_info *info,
7368                             gfp_t gfp)
7369 {
7370         struct sk_buff *skb;
7371         void *hdr;
7372         struct nlattr *data;
7373
7374         skb = nlmsg_new(approxlen + 100, gfp);
7375         if (!skb)
7376                 return NULL;
7377
7378         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7379         if (!hdr) {
7380                 kfree_skb(skb);
7381                 return NULL;
7382         }
7383
7384         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7385                 goto nla_put_failure;
7386
7387         if (info) {
7388                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7389                                 info->vendor_id))
7390                         goto nla_put_failure;
7391                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7392                                 info->subcmd))
7393                         goto nla_put_failure;
7394         }
7395
7396         data = nla_nest_start(skb, attr);
7397
7398         ((void **)skb->cb)[0] = rdev;
7399         ((void **)skb->cb)[1] = hdr;
7400         ((void **)skb->cb)[2] = data;
7401
7402         return skb;
7403
7404  nla_put_failure:
7405         kfree_skb(skb);
7406         return NULL;
7407 }
7408
7409 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7410                                            enum nl80211_commands cmd,
7411                                            enum nl80211_attrs attr,
7412                                            int vendor_event_idx,
7413                                            int approxlen, gfp_t gfp)
7414 {
7415         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7416         const struct nl80211_vendor_cmd_info *info;
7417
7418         switch (cmd) {
7419         case NL80211_CMD_TESTMODE:
7420                 if (WARN_ON(vendor_event_idx != -1))
7421                         return NULL;
7422                 info = NULL;
7423                 break;
7424         case NL80211_CMD_VENDOR:
7425                 if (WARN_ON(vendor_event_idx < 0 ||
7426                             vendor_event_idx >= wiphy->n_vendor_events))
7427                         return NULL;
7428                 info = &wiphy->vendor_events[vendor_event_idx];
7429                 break;
7430         default:
7431                 WARN_ON(1);
7432                 return NULL;
7433         }
7434
7435         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7436                                            cmd, attr, info, gfp);
7437 }
7438 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7439
7440 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7441 {
7442         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7443         void *hdr = ((void **)skb->cb)[1];
7444         struct nlattr *data = ((void **)skb->cb)[2];
7445         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7446
7447         /* clear CB data for netlink core to own from now on */
7448         memset(skb->cb, 0, sizeof(skb->cb));
7449
7450         nla_nest_end(skb, data);
7451         genlmsg_end(skb, hdr);
7452
7453         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7454                 mcgrp = NL80211_MCGRP_VENDOR;
7455
7456         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7457                                 mcgrp, gfp);
7458 }
7459 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7460
7461 #ifdef CONFIG_NL80211_TESTMODE
7462 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7463 {
7464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7465         struct wireless_dev *wdev =
7466                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7467         int err;
7468
7469         if (!rdev->ops->testmode_cmd)
7470                 return -EOPNOTSUPP;
7471
7472         if (IS_ERR(wdev)) {
7473                 err = PTR_ERR(wdev);
7474                 if (err != -EINVAL)
7475                         return err;
7476                 wdev = NULL;
7477         } else if (wdev->wiphy != &rdev->wiphy) {
7478                 return -EINVAL;
7479         }
7480
7481         if (!info->attrs[NL80211_ATTR_TESTDATA])
7482                 return -EINVAL;
7483
7484         rdev->cur_cmd_info = info;
7485         err = rdev_testmode_cmd(rdev, wdev,
7486                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7487                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7488         rdev->cur_cmd_info = NULL;
7489
7490         return err;
7491 }
7492
7493 static int nl80211_testmode_dump(struct sk_buff *skb,
7494                                  struct netlink_callback *cb)
7495 {
7496         struct cfg80211_registered_device *rdev;
7497         int err;
7498         long phy_idx;
7499         void *data = NULL;
7500         int data_len = 0;
7501
7502         rtnl_lock();
7503
7504         if (cb->args[0]) {
7505                 /*
7506                  * 0 is a valid index, but not valid for args[0],
7507                  * so we need to offset by 1.
7508                  */
7509                 phy_idx = cb->args[0] - 1;
7510         } else {
7511                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7512                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7513                                   nl80211_policy);
7514                 if (err)
7515                         goto out_err;
7516
7517                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7518                                                   nl80211_fam.attrbuf);
7519                 if (IS_ERR(rdev)) {
7520                         err = PTR_ERR(rdev);
7521                         goto out_err;
7522                 }
7523                 phy_idx = rdev->wiphy_idx;
7524                 rdev = NULL;
7525
7526                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7527                         cb->args[1] =
7528                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7529         }
7530
7531         if (cb->args[1]) {
7532                 data = nla_data((void *)cb->args[1]);
7533                 data_len = nla_len((void *)cb->args[1]);
7534         }
7535
7536         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7537         if (!rdev) {
7538                 err = -ENOENT;
7539                 goto out_err;
7540         }
7541
7542         if (!rdev->ops->testmode_dump) {
7543                 err = -EOPNOTSUPP;
7544                 goto out_err;
7545         }
7546
7547         while (1) {
7548                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7549                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7550                                            NL80211_CMD_TESTMODE);
7551                 struct nlattr *tmdata;
7552
7553                 if (!hdr)
7554                         break;
7555
7556                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7557                         genlmsg_cancel(skb, hdr);
7558                         break;
7559                 }
7560
7561                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7562                 if (!tmdata) {
7563                         genlmsg_cancel(skb, hdr);
7564                         break;
7565                 }
7566                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7567                 nla_nest_end(skb, tmdata);
7568
7569                 if (err == -ENOBUFS || err == -ENOENT) {
7570                         genlmsg_cancel(skb, hdr);
7571                         break;
7572                 } else if (err) {
7573                         genlmsg_cancel(skb, hdr);
7574                         goto out_err;
7575                 }
7576
7577                 genlmsg_end(skb, hdr);
7578         }
7579
7580         err = skb->len;
7581         /* see above */
7582         cb->args[0] = phy_idx + 1;
7583  out_err:
7584         rtnl_unlock();
7585         return err;
7586 }
7587 #endif
7588
7589 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7590 {
7591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7592         struct net_device *dev = info->user_ptr[1];
7593         struct cfg80211_connect_params connect;
7594         struct wiphy *wiphy;
7595         struct cfg80211_cached_keys *connkeys = NULL;
7596         int err;
7597
7598         memset(&connect, 0, sizeof(connect));
7599
7600         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7601                 return -EINVAL;
7602
7603         if (!info->attrs[NL80211_ATTR_SSID] ||
7604             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7605                 return -EINVAL;
7606
7607         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7608                 connect.auth_type =
7609                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7610                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7611                                              NL80211_CMD_CONNECT))
7612                         return -EINVAL;
7613         } else
7614                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7615
7616         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7617
7618         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7619                                       NL80211_MAX_NR_CIPHER_SUITES);
7620         if (err)
7621                 return err;
7622
7623         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7624             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7625                 return -EOPNOTSUPP;
7626
7627         wiphy = &rdev->wiphy;
7628
7629         connect.bg_scan_period = -1;
7630         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7631                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7632                 connect.bg_scan_period =
7633                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7634         }
7635
7636         if (info->attrs[NL80211_ATTR_MAC])
7637                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7638         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7639                 connect.bssid_hint =
7640                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7641         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7642         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7643
7644         if (info->attrs[NL80211_ATTR_IE]) {
7645                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7646                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7647         }
7648
7649         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7650                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7651                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7652                     connect.mfp != NL80211_MFP_NO)
7653                         return -EINVAL;
7654         } else {
7655                 connect.mfp = NL80211_MFP_NO;
7656         }
7657
7658         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7659                 connect.channel = nl80211_get_valid_chan(
7660                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7661                 if (!connect.channel)
7662                         return -EINVAL;
7663         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7664                 connect.channel_hint = nl80211_get_valid_chan(
7665                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7666                 if (!connect.channel_hint)
7667                         return -EINVAL;
7668         }
7669
7670         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7671                 connkeys = nl80211_parse_connkeys(rdev,
7672                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7673                 if (IS_ERR(connkeys))
7674                         return PTR_ERR(connkeys);
7675         }
7676
7677         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7678                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7679
7680         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7681                 memcpy(&connect.ht_capa_mask,
7682                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7683                        sizeof(connect.ht_capa_mask));
7684
7685         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7686                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7687                         kzfree(connkeys);
7688                         return -EINVAL;
7689                 }
7690                 memcpy(&connect.ht_capa,
7691                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7692                        sizeof(connect.ht_capa));
7693         }
7694
7695         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7696                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7697
7698         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7699                 memcpy(&connect.vht_capa_mask,
7700                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7701                        sizeof(connect.vht_capa_mask));
7702
7703         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7704                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7705                         kzfree(connkeys);
7706                         return -EINVAL;
7707                 }
7708                 memcpy(&connect.vht_capa,
7709                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7710                        sizeof(connect.vht_capa));
7711         }
7712
7713         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7714                 if (!(rdev->wiphy.features &
7715                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7716                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7717                         return -EINVAL;
7718                 connect.flags |= ASSOC_REQ_USE_RRM;
7719         }
7720
7721         wdev_lock(dev->ieee80211_ptr);
7722         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7723         wdev_unlock(dev->ieee80211_ptr);
7724         if (err)
7725                 kzfree(connkeys);
7726         return err;
7727 }
7728
7729 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7730 {
7731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7732         struct net_device *dev = info->user_ptr[1];
7733         u16 reason;
7734         int ret;
7735
7736         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7737                 reason = WLAN_REASON_DEAUTH_LEAVING;
7738         else
7739                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7740
7741         if (reason == 0)
7742                 return -EINVAL;
7743
7744         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7745             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7746                 return -EOPNOTSUPP;
7747
7748         wdev_lock(dev->ieee80211_ptr);
7749         ret = cfg80211_disconnect(rdev, dev, reason, true);
7750         wdev_unlock(dev->ieee80211_ptr);
7751         return ret;
7752 }
7753
7754 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7755 {
7756         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7757         struct net *net;
7758         int err;
7759         u32 pid;
7760
7761         if (!info->attrs[NL80211_ATTR_PID])
7762                 return -EINVAL;
7763
7764         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7765
7766         net = get_net_ns_by_pid(pid);
7767         if (IS_ERR(net))
7768                 return PTR_ERR(net);
7769
7770         err = 0;
7771
7772         /* check if anything to do */
7773         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7774                 err = cfg80211_switch_netns(rdev, net);
7775
7776         put_net(net);
7777         return err;
7778 }
7779
7780 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7781 {
7782         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7783         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7784                         struct cfg80211_pmksa *pmksa) = NULL;
7785         struct net_device *dev = info->user_ptr[1];
7786         struct cfg80211_pmksa pmksa;
7787
7788         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7789
7790         if (!info->attrs[NL80211_ATTR_MAC])
7791                 return -EINVAL;
7792
7793         if (!info->attrs[NL80211_ATTR_PMKID])
7794                 return -EINVAL;
7795
7796         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7797         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7798
7799         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7800             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7801                 return -EOPNOTSUPP;
7802
7803         switch (info->genlhdr->cmd) {
7804         case NL80211_CMD_SET_PMKSA:
7805                 rdev_ops = rdev->ops->set_pmksa;
7806                 break;
7807         case NL80211_CMD_DEL_PMKSA:
7808                 rdev_ops = rdev->ops->del_pmksa;
7809                 break;
7810         default:
7811                 WARN_ON(1);
7812                 break;
7813         }
7814
7815         if (!rdev_ops)
7816                 return -EOPNOTSUPP;
7817
7818         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7819 }
7820
7821 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7822 {
7823         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7824         struct net_device *dev = info->user_ptr[1];
7825
7826         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7827             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7828                 return -EOPNOTSUPP;
7829
7830         if (!rdev->ops->flush_pmksa)
7831                 return -EOPNOTSUPP;
7832
7833         return rdev_flush_pmksa(rdev, dev);
7834 }
7835
7836 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7837 {
7838         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7839         struct net_device *dev = info->user_ptr[1];
7840         u8 action_code, dialog_token;
7841         u32 peer_capability = 0;
7842         u16 status_code;
7843         u8 *peer;
7844         bool initiator;
7845
7846         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7847             !rdev->ops->tdls_mgmt)
7848                 return -EOPNOTSUPP;
7849
7850         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7851             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7852             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7853             !info->attrs[NL80211_ATTR_IE] ||
7854             !info->attrs[NL80211_ATTR_MAC])
7855                 return -EINVAL;
7856
7857         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7858         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7859         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7860         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7861         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7862         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7863                 peer_capability =
7864                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7865
7866         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7867                               dialog_token, status_code, peer_capability,
7868                               initiator,
7869                               nla_data(info->attrs[NL80211_ATTR_IE]),
7870                               nla_len(info->attrs[NL80211_ATTR_IE]));
7871 }
7872
7873 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7874 {
7875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7876         struct net_device *dev = info->user_ptr[1];
7877         enum nl80211_tdls_operation operation;
7878         u8 *peer;
7879
7880         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7881             !rdev->ops->tdls_oper)
7882                 return -EOPNOTSUPP;
7883
7884         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7885             !info->attrs[NL80211_ATTR_MAC])
7886                 return -EINVAL;
7887
7888         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7889         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7890
7891         return rdev_tdls_oper(rdev, dev, peer, operation);
7892 }
7893
7894 static int nl80211_remain_on_channel(struct sk_buff *skb,
7895                                      struct genl_info *info)
7896 {
7897         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7898         struct wireless_dev *wdev = info->user_ptr[1];
7899         struct cfg80211_chan_def chandef;
7900         struct sk_buff *msg;
7901         void *hdr;
7902         u64 cookie;
7903         u32 duration;
7904         int err;
7905
7906         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7907             !info->attrs[NL80211_ATTR_DURATION])
7908                 return -EINVAL;
7909
7910         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7911
7912         if (!rdev->ops->remain_on_channel ||
7913             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7914                 return -EOPNOTSUPP;
7915
7916         /*
7917          * We should be on that channel for at least a minimum amount of
7918          * time (10ms) but no longer than the driver supports.
7919          */
7920         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7921             duration > rdev->wiphy.max_remain_on_channel_duration)
7922                 return -EINVAL;
7923
7924         err = nl80211_parse_chandef(rdev, info, &chandef);
7925         if (err)
7926                 return err;
7927
7928         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7929         if (!msg)
7930                 return -ENOMEM;
7931
7932         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7933                              NL80211_CMD_REMAIN_ON_CHANNEL);
7934         if (!hdr) {
7935                 err = -ENOBUFS;
7936                 goto free_msg;
7937         }
7938
7939         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7940                                      duration, &cookie);
7941
7942         if (err)
7943                 goto free_msg;
7944
7945         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7946                 goto nla_put_failure;
7947
7948         genlmsg_end(msg, hdr);
7949
7950         return genlmsg_reply(msg, info);
7951
7952  nla_put_failure:
7953         err = -ENOBUFS;
7954  free_msg:
7955         nlmsg_free(msg);
7956         return err;
7957 }
7958
7959 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7960                                             struct genl_info *info)
7961 {
7962         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7963         struct wireless_dev *wdev = info->user_ptr[1];
7964         u64 cookie;
7965
7966         if (!info->attrs[NL80211_ATTR_COOKIE])
7967                 return -EINVAL;
7968
7969         if (!rdev->ops->cancel_remain_on_channel)
7970                 return -EOPNOTSUPP;
7971
7972         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7973
7974         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7975 }
7976
7977 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7978                            u8 *rates, u8 rates_len)
7979 {
7980         u8 i;
7981         u32 mask = 0;
7982
7983         for (i = 0; i < rates_len; i++) {
7984                 int rate = (rates[i] & 0x7f) * 5;
7985                 int ridx;
7986                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7987                         struct ieee80211_rate *srate =
7988                                 &sband->bitrates[ridx];
7989                         if (rate == srate->bitrate) {
7990                                 mask |= 1 << ridx;
7991                                 break;
7992                         }
7993                 }
7994                 if (ridx == sband->n_bitrates)
7995                         return 0; /* rate not found */
7996         }
7997
7998         return mask;
7999 }
8000
8001 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8002                                u8 *rates, u8 rates_len,
8003                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8004 {
8005         u8 i;
8006
8007         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8008
8009         for (i = 0; i < rates_len; i++) {
8010                 int ridx, rbit;
8011
8012                 ridx = rates[i] / 8;
8013                 rbit = BIT(rates[i] % 8);
8014
8015                 /* check validity */
8016                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8017                         return false;
8018
8019                 /* check availability */
8020                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8021                         mcs[ridx] |= rbit;
8022                 else
8023                         return false;
8024         }
8025
8026         return true;
8027 }
8028
8029 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8030 {
8031         u16 mcs_mask = 0;
8032
8033         switch (vht_mcs_map) {
8034         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8035                 break;
8036         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8037                 mcs_mask = 0x00FF;
8038                 break;
8039         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8040                 mcs_mask = 0x01FF;
8041                 break;
8042         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8043                 mcs_mask = 0x03FF;
8044                 break;
8045         default:
8046                 break;
8047         }
8048
8049         return mcs_mask;
8050 }
8051
8052 static void vht_build_mcs_mask(u16 vht_mcs_map,
8053                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8054 {
8055         u8 nss;
8056
8057         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8058                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8059                 vht_mcs_map >>= 2;
8060         }
8061 }
8062
8063 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8064                              struct nl80211_txrate_vht *txrate,
8065                              u16 mcs[NL80211_VHT_NSS_MAX])
8066 {
8067         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8068         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8069         u8 i;
8070
8071         if (!sband->vht_cap.vht_supported)
8072                 return false;
8073
8074         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8075
8076         /* Build vht_mcs_mask from VHT capabilities */
8077         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8078
8079         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8080                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8081                         mcs[i] = txrate->mcs[i];
8082                 else
8083                         return false;
8084         }
8085
8086         return true;
8087 }
8088
8089 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8090         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8091                                     .len = NL80211_MAX_SUPP_RATES },
8092         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8093                                 .len = NL80211_MAX_SUPP_HT_RATES },
8094         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8095         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8096 };
8097
8098 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8099                                        struct genl_info *info)
8100 {
8101         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8103         struct cfg80211_bitrate_mask mask;
8104         int rem, i;
8105         struct net_device *dev = info->user_ptr[1];
8106         struct nlattr *tx_rates;
8107         struct ieee80211_supported_band *sband;
8108         u16 vht_tx_mcs_map;
8109
8110         if (!rdev->ops->set_bitrate_mask)
8111                 return -EOPNOTSUPP;
8112
8113         memset(&mask, 0, sizeof(mask));
8114         /* Default to all rates enabled */
8115         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8116                 sband = rdev->wiphy.bands[i];
8117
8118                 if (!sband)
8119                         continue;
8120
8121                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8122                 memcpy(mask.control[i].ht_mcs,
8123                        sband->ht_cap.mcs.rx_mask,
8124                        sizeof(mask.control[i].ht_mcs));
8125
8126                 if (!sband->vht_cap.vht_supported)
8127                         continue;
8128
8129                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8130                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8131         }
8132
8133         /* if no rates are given set it back to the defaults */
8134         if (!info->attrs[NL80211_ATTR_TX_RATES])
8135                 goto out;
8136
8137         /*
8138          * The nested attribute uses enum nl80211_band as the index. This maps
8139          * directly to the enum ieee80211_band values used in cfg80211.
8140          */
8141         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8142         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8143                 enum ieee80211_band band = nla_type(tx_rates);
8144                 int err;
8145
8146                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8147                         return -EINVAL;
8148                 sband = rdev->wiphy.bands[band];
8149                 if (sband == NULL)
8150                         return -EINVAL;
8151                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8152                                 nla_len(tx_rates), nl80211_txattr_policy);
8153                 if (err)
8154                         return err;
8155                 if (tb[NL80211_TXRATE_LEGACY]) {
8156                         mask.control[band].legacy = rateset_to_mask(
8157                                 sband,
8158                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8159                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8160                         if ((mask.control[band].legacy == 0) &&
8161                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8162                                 return -EINVAL;
8163                 }
8164                 if (tb[NL80211_TXRATE_HT]) {
8165                         if (!ht_rateset_to_mask(
8166                                         sband,
8167                                         nla_data(tb[NL80211_TXRATE_HT]),
8168                                         nla_len(tb[NL80211_TXRATE_HT]),
8169                                         mask.control[band].ht_mcs))
8170                                 return -EINVAL;
8171                 }
8172                 if (tb[NL80211_TXRATE_VHT]) {
8173                         if (!vht_set_mcs_mask(
8174                                         sband,
8175                                         nla_data(tb[NL80211_TXRATE_VHT]),
8176                                         mask.control[band].vht_mcs))
8177                                 return -EINVAL;
8178                 }
8179                 if (tb[NL80211_TXRATE_GI]) {
8180                         mask.control[band].gi =
8181                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8182                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8183                                 return -EINVAL;
8184                 }
8185
8186                 if (mask.control[band].legacy == 0) {
8187                         /* don't allow empty legacy rates if HT or VHT
8188                          * are not even supported.
8189                          */
8190                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8191                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8192                                 return -EINVAL;
8193
8194                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8195                                 if (mask.control[band].ht_mcs[i])
8196                                         goto out;
8197
8198                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8199                                 if (mask.control[band].vht_mcs[i])
8200                                         goto out;
8201
8202                         /* legacy and mcs rates may not be both empty */
8203                         return -EINVAL;
8204                 }
8205         }
8206
8207 out:
8208         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8209 }
8210
8211 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8212 {
8213         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8214         struct wireless_dev *wdev = info->user_ptr[1];
8215         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8216
8217         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8218                 return -EINVAL;
8219
8220         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8221                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8222
8223         switch (wdev->iftype) {
8224         case NL80211_IFTYPE_STATION:
8225         case NL80211_IFTYPE_ADHOC:
8226         case NL80211_IFTYPE_P2P_CLIENT:
8227         case NL80211_IFTYPE_AP:
8228         case NL80211_IFTYPE_AP_VLAN:
8229         case NL80211_IFTYPE_MESH_POINT:
8230         case NL80211_IFTYPE_P2P_GO:
8231         case NL80211_IFTYPE_P2P_DEVICE:
8232                 break;
8233         default:
8234                 return -EOPNOTSUPP;
8235         }
8236
8237         /* not much point in registering if we can't reply */
8238         if (!rdev->ops->mgmt_tx)
8239                 return -EOPNOTSUPP;
8240
8241         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8242                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8243                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8244 }
8245
8246 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8247 {
8248         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8249         struct wireless_dev *wdev = info->user_ptr[1];
8250         struct cfg80211_chan_def chandef;
8251         int err;
8252         void *hdr = NULL;
8253         u64 cookie;
8254         struct sk_buff *msg = NULL;
8255         struct cfg80211_mgmt_tx_params params = {
8256                 .dont_wait_for_ack =
8257                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8258         };
8259
8260         if (!info->attrs[NL80211_ATTR_FRAME])
8261                 return -EINVAL;
8262
8263         if (!rdev->ops->mgmt_tx)
8264                 return -EOPNOTSUPP;
8265
8266         switch (wdev->iftype) {
8267         case NL80211_IFTYPE_P2P_DEVICE:
8268                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8269                         return -EINVAL;
8270         case NL80211_IFTYPE_STATION:
8271         case NL80211_IFTYPE_ADHOC:
8272         case NL80211_IFTYPE_P2P_CLIENT:
8273         case NL80211_IFTYPE_AP:
8274         case NL80211_IFTYPE_AP_VLAN:
8275         case NL80211_IFTYPE_MESH_POINT:
8276         case NL80211_IFTYPE_P2P_GO:
8277                 break;
8278         default:
8279                 return -EOPNOTSUPP;
8280         }
8281
8282         if (info->attrs[NL80211_ATTR_DURATION]) {
8283                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8284                         return -EINVAL;
8285                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8286
8287                 /*
8288                  * We should wait on the channel for at least a minimum amount
8289                  * of time (10ms) but no longer than the driver supports.
8290                  */
8291                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8292                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8293                         return -EINVAL;
8294
8295         }
8296
8297         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8298
8299         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8300                 return -EINVAL;
8301
8302         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8303
8304         /* get the channel if any has been specified, otherwise pass NULL to
8305          * the driver. The latter will use the current one
8306          */
8307         chandef.chan = NULL;
8308         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8309                 err = nl80211_parse_chandef(rdev, info, &chandef);
8310                 if (err)
8311                         return err;
8312         }
8313
8314         if (!chandef.chan && params.offchan)
8315                 return -EINVAL;
8316
8317         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8318         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8319
8320         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8321                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8322                 int i;
8323
8324                 if (len % sizeof(u16))
8325                         return -EINVAL;
8326
8327                 params.n_csa_offsets = len / sizeof(u16);
8328                 params.csa_offsets =
8329                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8330
8331                 /* check that all the offsets fit the frame */
8332                 for (i = 0; i < params.n_csa_offsets; i++) {
8333                         if (params.csa_offsets[i] >= params.len)
8334                                 return -EINVAL;
8335                 }
8336         }
8337
8338         if (!params.dont_wait_for_ack) {
8339                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8340                 if (!msg)
8341                         return -ENOMEM;
8342
8343                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8344                                      NL80211_CMD_FRAME);
8345                 if (!hdr) {
8346                         err = -ENOBUFS;
8347                         goto free_msg;
8348                 }
8349         }
8350
8351         params.chan = chandef.chan;
8352         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8353         if (err)
8354                 goto free_msg;
8355
8356         if (msg) {
8357                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8358                         goto nla_put_failure;
8359
8360                 genlmsg_end(msg, hdr);
8361                 return genlmsg_reply(msg, info);
8362         }
8363
8364         return 0;
8365
8366  nla_put_failure:
8367         err = -ENOBUFS;
8368  free_msg:
8369         nlmsg_free(msg);
8370         return err;
8371 }
8372
8373 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8374 {
8375         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8376         struct wireless_dev *wdev = info->user_ptr[1];
8377         u64 cookie;
8378
8379         if (!info->attrs[NL80211_ATTR_COOKIE])
8380                 return -EINVAL;
8381
8382         if (!rdev->ops->mgmt_tx_cancel_wait)
8383                 return -EOPNOTSUPP;
8384
8385         switch (wdev->iftype) {
8386         case NL80211_IFTYPE_STATION:
8387         case NL80211_IFTYPE_ADHOC:
8388         case NL80211_IFTYPE_P2P_CLIENT:
8389         case NL80211_IFTYPE_AP:
8390         case NL80211_IFTYPE_AP_VLAN:
8391         case NL80211_IFTYPE_P2P_GO:
8392         case NL80211_IFTYPE_P2P_DEVICE:
8393                 break;
8394         default:
8395                 return -EOPNOTSUPP;
8396         }
8397
8398         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8399
8400         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8401 }
8402
8403 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8404 {
8405         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8406         struct wireless_dev *wdev;
8407         struct net_device *dev = info->user_ptr[1];
8408         u8 ps_state;
8409         bool state;
8410         int err;
8411
8412         if (!info->attrs[NL80211_ATTR_PS_STATE])
8413                 return -EINVAL;
8414
8415         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8416
8417         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8418                 return -EINVAL;
8419
8420         wdev = dev->ieee80211_ptr;
8421
8422         if (!rdev->ops->set_power_mgmt)
8423                 return -EOPNOTSUPP;
8424
8425         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8426
8427         if (state == wdev->ps)
8428                 return 0;
8429
8430         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8431         if (!err)
8432                 wdev->ps = state;
8433         return err;
8434 }
8435
8436 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8437 {
8438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8439         enum nl80211_ps_state ps_state;
8440         struct wireless_dev *wdev;
8441         struct net_device *dev = info->user_ptr[1];
8442         struct sk_buff *msg;
8443         void *hdr;
8444         int err;
8445
8446         wdev = dev->ieee80211_ptr;
8447
8448         if (!rdev->ops->set_power_mgmt)
8449                 return -EOPNOTSUPP;
8450
8451         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8452         if (!msg)
8453                 return -ENOMEM;
8454
8455         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8456                              NL80211_CMD_GET_POWER_SAVE);
8457         if (!hdr) {
8458                 err = -ENOBUFS;
8459                 goto free_msg;
8460         }
8461
8462         if (wdev->ps)
8463                 ps_state = NL80211_PS_ENABLED;
8464         else
8465                 ps_state = NL80211_PS_DISABLED;
8466
8467         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8468                 goto nla_put_failure;
8469
8470         genlmsg_end(msg, hdr);
8471         return genlmsg_reply(msg, info);
8472
8473  nla_put_failure:
8474         err = -ENOBUFS;
8475  free_msg:
8476         nlmsg_free(msg);
8477         return err;
8478 }
8479
8480 static const struct nla_policy
8481 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8482         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8483         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8484         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8485         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8486         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8487         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8488 };
8489
8490 static int nl80211_set_cqm_txe(struct genl_info *info,
8491                                u32 rate, u32 pkts, u32 intvl)
8492 {
8493         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8494         struct net_device *dev = info->user_ptr[1];
8495         struct wireless_dev *wdev = dev->ieee80211_ptr;
8496
8497         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8498                 return -EINVAL;
8499
8500         if (!rdev->ops->set_cqm_txe_config)
8501                 return -EOPNOTSUPP;
8502
8503         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8504             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8505                 return -EOPNOTSUPP;
8506
8507         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8508 }
8509
8510 static int nl80211_set_cqm_rssi(struct genl_info *info,
8511                                 s32 threshold, u32 hysteresis)
8512 {
8513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8514         struct net_device *dev = info->user_ptr[1];
8515         struct wireless_dev *wdev = dev->ieee80211_ptr;
8516
8517         if (threshold > 0)
8518                 return -EINVAL;
8519
8520         /* disabling - hysteresis should also be zero then */
8521         if (threshold == 0)
8522                 hysteresis = 0;
8523
8524         if (!rdev->ops->set_cqm_rssi_config)
8525                 return -EOPNOTSUPP;
8526
8527         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8528             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8529                 return -EOPNOTSUPP;
8530
8531         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8532 }
8533
8534 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8535 {
8536         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8537         struct nlattr *cqm;
8538         int err;
8539
8540         cqm = info->attrs[NL80211_ATTR_CQM];
8541         if (!cqm)
8542                 return -EINVAL;
8543
8544         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8545                                nl80211_attr_cqm_policy);
8546         if (err)
8547                 return err;
8548
8549         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8550             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8551                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8552                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8553
8554                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8555         }
8556
8557         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8558             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8559             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8560                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8561                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8562                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8563
8564                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8565         }
8566
8567         return -EINVAL;
8568 }
8569
8570 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8571 {
8572         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8573         struct net_device *dev = info->user_ptr[1];
8574         struct ocb_setup setup = {};
8575         int err;
8576
8577         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8578         if (err)
8579                 return err;
8580
8581         return cfg80211_join_ocb(rdev, dev, &setup);
8582 }
8583
8584 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8585 {
8586         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8587         struct net_device *dev = info->user_ptr[1];
8588
8589         return cfg80211_leave_ocb(rdev, dev);
8590 }
8591
8592 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8593 {
8594         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8595         struct net_device *dev = info->user_ptr[1];
8596         struct mesh_config cfg;
8597         struct mesh_setup setup;
8598         int err;
8599
8600         /* start with default */
8601         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8602         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8603
8604         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8605                 /* and parse parameters if given */
8606                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8607                 if (err)
8608                         return err;
8609         }
8610
8611         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8612             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8613                 return -EINVAL;
8614
8615         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8616         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8617
8618         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8619             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8620                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8621                         return -EINVAL;
8622
8623         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8624                 setup.beacon_interval =
8625                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8626                 if (setup.beacon_interval < 10 ||
8627                     setup.beacon_interval > 10000)
8628                         return -EINVAL;
8629         }
8630
8631         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8632                 setup.dtim_period =
8633                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8634                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8635                         return -EINVAL;
8636         }
8637
8638         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8639                 /* parse additional setup parameters if given */
8640                 err = nl80211_parse_mesh_setup(info, &setup);
8641                 if (err)
8642                         return err;
8643         }
8644
8645         if (setup.user_mpm)
8646                 cfg.auto_open_plinks = false;
8647
8648         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8649                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8650                 if (err)
8651                         return err;
8652         } else {
8653                 /* cfg80211_join_mesh() will sort it out */
8654                 setup.chandef.chan = NULL;
8655         }
8656
8657         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8658                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8659                 int n_rates =
8660                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8661                 struct ieee80211_supported_band *sband;
8662
8663                 if (!setup.chandef.chan)
8664                         return -EINVAL;
8665
8666                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8667
8668                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8669                                              &setup.basic_rates);
8670                 if (err)
8671                         return err;
8672         }
8673
8674         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8675 }
8676
8677 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8678 {
8679         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8680         struct net_device *dev = info->user_ptr[1];
8681
8682         return cfg80211_leave_mesh(rdev, dev);
8683 }
8684
8685 #ifdef CONFIG_PM
8686 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8687                                         struct cfg80211_registered_device *rdev)
8688 {
8689         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8690         struct nlattr *nl_pats, *nl_pat;
8691         int i, pat_len;
8692
8693         if (!wowlan->n_patterns)
8694                 return 0;
8695
8696         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8697         if (!nl_pats)
8698                 return -ENOBUFS;
8699
8700         for (i = 0; i < wowlan->n_patterns; i++) {
8701                 nl_pat = nla_nest_start(msg, i + 1);
8702                 if (!nl_pat)
8703                         return -ENOBUFS;
8704                 pat_len = wowlan->patterns[i].pattern_len;
8705                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8706                             wowlan->patterns[i].mask) ||
8707                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8708                             wowlan->patterns[i].pattern) ||
8709                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8710                                 wowlan->patterns[i].pkt_offset))
8711                         return -ENOBUFS;
8712                 nla_nest_end(msg, nl_pat);
8713         }
8714         nla_nest_end(msg, nl_pats);
8715
8716         return 0;
8717 }
8718
8719 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8720                                    struct cfg80211_wowlan_tcp *tcp)
8721 {
8722         struct nlattr *nl_tcp;
8723
8724         if (!tcp)
8725                 return 0;
8726
8727         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8728         if (!nl_tcp)
8729                 return -ENOBUFS;
8730
8731         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8732             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8733             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8734             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8735             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8736             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8737                     tcp->payload_len, tcp->payload) ||
8738             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8739                         tcp->data_interval) ||
8740             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8741                     tcp->wake_len, tcp->wake_data) ||
8742             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8743                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8744                 return -ENOBUFS;
8745
8746         if (tcp->payload_seq.len &&
8747             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8748                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8749                 return -ENOBUFS;
8750
8751         if (tcp->payload_tok.len &&
8752             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8753                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8754                     &tcp->payload_tok))
8755                 return -ENOBUFS;
8756
8757         nla_nest_end(msg, nl_tcp);
8758
8759         return 0;
8760 }
8761
8762 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8763                                   struct cfg80211_sched_scan_request *req)
8764 {
8765         struct nlattr *nd, *freqs, *matches, *match;
8766         int i;
8767
8768         if (!req)
8769                 return 0;
8770
8771         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8772         if (!nd)
8773                 return -ENOBUFS;
8774
8775         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8776                 return -ENOBUFS;
8777
8778         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8779         if (!freqs)
8780                 return -ENOBUFS;
8781
8782         for (i = 0; i < req->n_channels; i++)
8783                 nla_put_u32(msg, i, req->channels[i]->center_freq);
8784
8785         nla_nest_end(msg, freqs);
8786
8787         if (req->n_match_sets) {
8788                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8789                 for (i = 0; i < req->n_match_sets; i++) {
8790                         match = nla_nest_start(msg, i);
8791                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8792                                 req->match_sets[i].ssid.ssid_len,
8793                                 req->match_sets[i].ssid.ssid);
8794                         nla_nest_end(msg, match);
8795                 }
8796                 nla_nest_end(msg, matches);
8797         }
8798
8799         nla_nest_end(msg, nd);
8800
8801         return 0;
8802 }
8803
8804 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8805 {
8806         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8807         struct sk_buff *msg;
8808         void *hdr;
8809         u32 size = NLMSG_DEFAULT_SIZE;
8810
8811         if (!rdev->wiphy.wowlan)
8812                 return -EOPNOTSUPP;
8813
8814         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8815                 /* adjust size to have room for all the data */
8816                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8817                         rdev->wiphy.wowlan_config->tcp->payload_len +
8818                         rdev->wiphy.wowlan_config->tcp->wake_len +
8819                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8820         }
8821
8822         msg = nlmsg_new(size, GFP_KERNEL);
8823         if (!msg)
8824                 return -ENOMEM;
8825
8826         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8827                              NL80211_CMD_GET_WOWLAN);
8828         if (!hdr)
8829                 goto nla_put_failure;
8830
8831         if (rdev->wiphy.wowlan_config) {
8832                 struct nlattr *nl_wowlan;
8833
8834                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8835                 if (!nl_wowlan)
8836                         goto nla_put_failure;
8837
8838                 if ((rdev->wiphy.wowlan_config->any &&
8839                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8840                     (rdev->wiphy.wowlan_config->disconnect &&
8841                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8842                     (rdev->wiphy.wowlan_config->magic_pkt &&
8843                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8844                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8845                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8846                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8847                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8848                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8849                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8850                     (rdev->wiphy.wowlan_config->rfkill_release &&
8851                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8852                         goto nla_put_failure;
8853
8854                 if (nl80211_send_wowlan_patterns(msg, rdev))
8855                         goto nla_put_failure;
8856
8857                 if (nl80211_send_wowlan_tcp(msg,
8858                                             rdev->wiphy.wowlan_config->tcp))
8859                         goto nla_put_failure;
8860
8861                 if (nl80211_send_wowlan_nd(
8862                             msg,
8863                             rdev->wiphy.wowlan_config->nd_config))
8864                         goto nla_put_failure;
8865
8866                 nla_nest_end(msg, nl_wowlan);
8867         }
8868
8869         genlmsg_end(msg, hdr);
8870         return genlmsg_reply(msg, info);
8871
8872 nla_put_failure:
8873         nlmsg_free(msg);
8874         return -ENOBUFS;
8875 }
8876
8877 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8878                                     struct nlattr *attr,
8879                                     struct cfg80211_wowlan *trig)
8880 {
8881         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8882         struct cfg80211_wowlan_tcp *cfg;
8883         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8884         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8885         u32 size;
8886         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8887         int err, port;
8888
8889         if (!rdev->wiphy.wowlan->tcp)
8890                 return -EINVAL;
8891
8892         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8893                         nla_data(attr), nla_len(attr),
8894                         nl80211_wowlan_tcp_policy);
8895         if (err)
8896                 return err;
8897
8898         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8899             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8900             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8901             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8902             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8903             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8904             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8905             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8906                 return -EINVAL;
8907
8908         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8909         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8910                 return -EINVAL;
8911
8912         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8913                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8914             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8915                 return -EINVAL;
8916
8917         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8918         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8919                 return -EINVAL;
8920
8921         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8922         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8923                 return -EINVAL;
8924
8925         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8926                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8927
8928                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8929                 tokens_size = tokln - sizeof(*tok);
8930
8931                 if (!tok->len || tokens_size % tok->len)
8932                         return -EINVAL;
8933                 if (!rdev->wiphy.wowlan->tcp->tok)
8934                         return -EINVAL;
8935                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8936                         return -EINVAL;
8937                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8938                         return -EINVAL;
8939                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8940                         return -EINVAL;
8941                 if (tok->offset + tok->len > data_size)
8942                         return -EINVAL;
8943         }
8944
8945         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8946                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8947                 if (!rdev->wiphy.wowlan->tcp->seq)
8948                         return -EINVAL;
8949                 if (seq->len == 0 || seq->len > 4)
8950                         return -EINVAL;
8951                 if (seq->len + seq->offset > data_size)
8952                         return -EINVAL;
8953         }
8954
8955         size = sizeof(*cfg);
8956         size += data_size;
8957         size += wake_size + wake_mask_size;
8958         size += tokens_size;
8959
8960         cfg = kzalloc(size, GFP_KERNEL);
8961         if (!cfg)
8962                 return -ENOMEM;
8963         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8964         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8965         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8966                ETH_ALEN);
8967         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8968                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8969         else
8970                 port = 0;
8971 #ifdef CONFIG_INET
8972         /* allocate a socket and port for it and use it */
8973         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8974                             IPPROTO_TCP, &cfg->sock, 1);
8975         if (err) {
8976                 kfree(cfg);
8977                 return err;
8978         }
8979         if (inet_csk_get_port(cfg->sock->sk, port)) {
8980                 sock_release(cfg->sock);
8981                 kfree(cfg);
8982                 return -EADDRINUSE;
8983         }
8984         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8985 #else
8986         if (!port) {
8987                 kfree(cfg);
8988                 return -EINVAL;
8989         }
8990         cfg->src_port = port;
8991 #endif
8992
8993         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8994         cfg->payload_len = data_size;
8995         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8996         memcpy((void *)cfg->payload,
8997                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8998                data_size);
8999         if (seq)
9000                 cfg->payload_seq = *seq;
9001         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9002         cfg->wake_len = wake_size;
9003         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9004         memcpy((void *)cfg->wake_data,
9005                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9006                wake_size);
9007         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9008                          data_size + wake_size;
9009         memcpy((void *)cfg->wake_mask,
9010                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9011                wake_mask_size);
9012         if (tok) {
9013                 cfg->tokens_size = tokens_size;
9014                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9015         }
9016
9017         trig->tcp = cfg;
9018
9019         return 0;
9020 }
9021
9022 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9023                                    const struct wiphy_wowlan_support *wowlan,
9024                                    struct nlattr *attr,
9025                                    struct cfg80211_wowlan *trig)
9026 {
9027         struct nlattr **tb;
9028         int err;
9029
9030         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9031         if (!tb)
9032                 return -ENOMEM;
9033
9034         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9035                 err = -EOPNOTSUPP;
9036                 goto out;
9037         }
9038
9039         err = nla_parse(tb, NL80211_ATTR_MAX,
9040                         nla_data(attr), nla_len(attr),
9041                         nl80211_policy);
9042         if (err)
9043                 goto out;
9044
9045         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9046         err = PTR_ERR_OR_ZERO(trig->nd_config);
9047         if (err)
9048                 trig->nd_config = NULL;
9049
9050 out:
9051         kfree(tb);
9052         return err;
9053 }
9054
9055 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9056 {
9057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9058         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9059         struct cfg80211_wowlan new_triggers = {};
9060         struct cfg80211_wowlan *ntrig;
9061         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9062         int err, i;
9063         bool prev_enabled = rdev->wiphy.wowlan_config;
9064
9065         if (!wowlan)
9066                 return -EOPNOTSUPP;
9067
9068         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9069                 cfg80211_rdev_free_wowlan(rdev);
9070                 rdev->wiphy.wowlan_config = NULL;
9071                 goto set_wakeup;
9072         }
9073
9074         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9075                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9076                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9077                         nl80211_wowlan_policy);
9078         if (err)
9079                 return err;
9080
9081         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9082                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9083                         return -EINVAL;
9084                 new_triggers.any = true;
9085         }
9086
9087         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9088                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9089                         return -EINVAL;
9090                 new_triggers.disconnect = true;
9091         }
9092
9093         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9094                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9095                         return -EINVAL;
9096                 new_triggers.magic_pkt = true;
9097         }
9098
9099         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9100                 return -EINVAL;
9101
9102         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9103                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9104                         return -EINVAL;
9105                 new_triggers.gtk_rekey_failure = true;
9106         }
9107
9108         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9109                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9110                         return -EINVAL;
9111                 new_triggers.eap_identity_req = true;
9112         }
9113
9114         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9115                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9116                         return -EINVAL;
9117                 new_triggers.four_way_handshake = true;
9118         }
9119
9120         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9121                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9122                         return -EINVAL;
9123                 new_triggers.rfkill_release = true;
9124         }
9125
9126         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9127                 struct nlattr *pat;
9128                 int n_patterns = 0;
9129                 int rem, pat_len, mask_len, pkt_offset;
9130                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9131
9132                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9133                                     rem)
9134                         n_patterns++;
9135                 if (n_patterns > wowlan->n_patterns)
9136                         return -EINVAL;
9137
9138                 new_triggers.patterns = kcalloc(n_patterns,
9139                                                 sizeof(new_triggers.patterns[0]),
9140                                                 GFP_KERNEL);
9141                 if (!new_triggers.patterns)
9142                         return -ENOMEM;
9143
9144                 new_triggers.n_patterns = n_patterns;
9145                 i = 0;
9146
9147                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9148                                     rem) {
9149                         u8 *mask_pat;
9150
9151                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9152                                   nla_len(pat), NULL);
9153                         err = -EINVAL;
9154                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9155                             !pat_tb[NL80211_PKTPAT_PATTERN])
9156                                 goto error;
9157                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9158                         mask_len = DIV_ROUND_UP(pat_len, 8);
9159                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9160                                 goto error;
9161                         if (pat_len > wowlan->pattern_max_len ||
9162                             pat_len < wowlan->pattern_min_len)
9163                                 goto error;
9164
9165                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9166                                 pkt_offset = 0;
9167                         else
9168                                 pkt_offset = nla_get_u32(
9169                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9170                         if (pkt_offset > wowlan->max_pkt_offset)
9171                                 goto error;
9172                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9173
9174                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9175                         if (!mask_pat) {
9176                                 err = -ENOMEM;
9177                                 goto error;
9178                         }
9179                         new_triggers.patterns[i].mask = mask_pat;
9180                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9181                                mask_len);
9182                         mask_pat += mask_len;
9183                         new_triggers.patterns[i].pattern = mask_pat;
9184                         new_triggers.patterns[i].pattern_len = pat_len;
9185                         memcpy(mask_pat,
9186                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9187                                pat_len);
9188                         i++;
9189                 }
9190         }
9191
9192         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9193                 err = nl80211_parse_wowlan_tcp(
9194                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9195                         &new_triggers);
9196                 if (err)
9197                         goto error;
9198         }
9199
9200         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9201                 err = nl80211_parse_wowlan_nd(
9202                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9203                         &new_triggers);
9204                 if (err)
9205                         goto error;
9206         }
9207
9208         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9209         if (!ntrig) {
9210                 err = -ENOMEM;
9211                 goto error;
9212         }
9213         cfg80211_rdev_free_wowlan(rdev);
9214         rdev->wiphy.wowlan_config = ntrig;
9215
9216  set_wakeup:
9217         if (rdev->ops->set_wakeup &&
9218             prev_enabled != !!rdev->wiphy.wowlan_config)
9219                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9220
9221         return 0;
9222  error:
9223         for (i = 0; i < new_triggers.n_patterns; i++)
9224                 kfree(new_triggers.patterns[i].mask);
9225         kfree(new_triggers.patterns);
9226         if (new_triggers.tcp && new_triggers.tcp->sock)
9227                 sock_release(new_triggers.tcp->sock);
9228         kfree(new_triggers.tcp);
9229         return err;
9230 }
9231 #endif
9232
9233 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9234                                        struct cfg80211_registered_device *rdev)
9235 {
9236         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9237         int i, j, pat_len;
9238         struct cfg80211_coalesce_rules *rule;
9239
9240         if (!rdev->coalesce->n_rules)
9241                 return 0;
9242
9243         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9244         if (!nl_rules)
9245                 return -ENOBUFS;
9246
9247         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9248                 nl_rule = nla_nest_start(msg, i + 1);
9249                 if (!nl_rule)
9250                         return -ENOBUFS;
9251
9252                 rule = &rdev->coalesce->rules[i];
9253                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9254                                 rule->delay))
9255                         return -ENOBUFS;
9256
9257                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9258                                 rule->condition))
9259                         return -ENOBUFS;
9260
9261                 nl_pats = nla_nest_start(msg,
9262                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9263                 if (!nl_pats)
9264                         return -ENOBUFS;
9265
9266                 for (j = 0; j < rule->n_patterns; j++) {
9267                         nl_pat = nla_nest_start(msg, j + 1);
9268                         if (!nl_pat)
9269                                 return -ENOBUFS;
9270                         pat_len = rule->patterns[j].pattern_len;
9271                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9272                                     DIV_ROUND_UP(pat_len, 8),
9273                                     rule->patterns[j].mask) ||
9274                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9275                                     rule->patterns[j].pattern) ||
9276                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9277                                         rule->patterns[j].pkt_offset))
9278                                 return -ENOBUFS;
9279                         nla_nest_end(msg, nl_pat);
9280                 }
9281                 nla_nest_end(msg, nl_pats);
9282                 nla_nest_end(msg, nl_rule);
9283         }
9284         nla_nest_end(msg, nl_rules);
9285
9286         return 0;
9287 }
9288
9289 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9290 {
9291         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9292         struct sk_buff *msg;
9293         void *hdr;
9294
9295         if (!rdev->wiphy.coalesce)
9296                 return -EOPNOTSUPP;
9297
9298         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9299         if (!msg)
9300                 return -ENOMEM;
9301
9302         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9303                              NL80211_CMD_GET_COALESCE);
9304         if (!hdr)
9305                 goto nla_put_failure;
9306
9307         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9308                 goto nla_put_failure;
9309
9310         genlmsg_end(msg, hdr);
9311         return genlmsg_reply(msg, info);
9312
9313 nla_put_failure:
9314         nlmsg_free(msg);
9315         return -ENOBUFS;
9316 }
9317
9318 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9319 {
9320         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9321         int i, j;
9322         struct cfg80211_coalesce_rules *rule;
9323
9324         if (!coalesce)
9325                 return;
9326
9327         for (i = 0; i < coalesce->n_rules; i++) {
9328                 rule = &coalesce->rules[i];
9329                 for (j = 0; j < rule->n_patterns; j++)
9330                         kfree(rule->patterns[j].mask);
9331                 kfree(rule->patterns);
9332         }
9333         kfree(coalesce->rules);
9334         kfree(coalesce);
9335         rdev->coalesce = NULL;
9336 }
9337
9338 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9339                                        struct nlattr *rule,
9340                                        struct cfg80211_coalesce_rules *new_rule)
9341 {
9342         int err, i;
9343         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9344         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9345         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9346         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9347
9348         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9349                         nla_len(rule), nl80211_coalesce_policy);
9350         if (err)
9351                 return err;
9352
9353         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9354                 new_rule->delay =
9355                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9356         if (new_rule->delay > coalesce->max_delay)
9357                 return -EINVAL;
9358
9359         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9360                 new_rule->condition =
9361                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9362         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9363             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9364                 return -EINVAL;
9365
9366         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9367                 return -EINVAL;
9368
9369         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9370                             rem)
9371                 n_patterns++;
9372         if (n_patterns > coalesce->n_patterns)
9373                 return -EINVAL;
9374
9375         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9376                                      GFP_KERNEL);
9377         if (!new_rule->patterns)
9378                 return -ENOMEM;
9379
9380         new_rule->n_patterns = n_patterns;
9381         i = 0;
9382
9383         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9384                             rem) {
9385                 u8 *mask_pat;
9386
9387                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9388                           nla_len(pat), NULL);
9389                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9390                     !pat_tb[NL80211_PKTPAT_PATTERN])
9391                         return -EINVAL;
9392                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9393                 mask_len = DIV_ROUND_UP(pat_len, 8);
9394                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9395                         return -EINVAL;
9396                 if (pat_len > coalesce->pattern_max_len ||
9397                     pat_len < coalesce->pattern_min_len)
9398                         return -EINVAL;
9399
9400                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9401                         pkt_offset = 0;
9402                 else
9403                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9404                 if (pkt_offset > coalesce->max_pkt_offset)
9405                         return -EINVAL;
9406                 new_rule->patterns[i].pkt_offset = pkt_offset;
9407
9408                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9409                 if (!mask_pat)
9410                         return -ENOMEM;
9411
9412                 new_rule->patterns[i].mask = mask_pat;
9413                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9414                        mask_len);
9415
9416                 mask_pat += mask_len;
9417                 new_rule->patterns[i].pattern = mask_pat;
9418                 new_rule->patterns[i].pattern_len = pat_len;
9419                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9420                        pat_len);
9421                 i++;
9422         }
9423
9424         return 0;
9425 }
9426
9427 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9428 {
9429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9430         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9431         struct cfg80211_coalesce new_coalesce = {};
9432         struct cfg80211_coalesce *n_coalesce;
9433         int err, rem_rule, n_rules = 0, i, j;
9434         struct nlattr *rule;
9435         struct cfg80211_coalesce_rules *tmp_rule;
9436
9437         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9438                 return -EOPNOTSUPP;
9439
9440         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9441                 cfg80211_rdev_free_coalesce(rdev);
9442                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9443                 return 0;
9444         }
9445
9446         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9447                             rem_rule)
9448                 n_rules++;
9449         if (n_rules > coalesce->n_rules)
9450                 return -EINVAL;
9451
9452         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9453                                      GFP_KERNEL);
9454         if (!new_coalesce.rules)
9455                 return -ENOMEM;
9456
9457         new_coalesce.n_rules = n_rules;
9458         i = 0;
9459
9460         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9461                             rem_rule) {
9462                 err = nl80211_parse_coalesce_rule(rdev, rule,
9463                                                   &new_coalesce.rules[i]);
9464                 if (err)
9465                         goto error;
9466
9467                 i++;
9468         }
9469
9470         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9471         if (err)
9472                 goto error;
9473
9474         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9475         if (!n_coalesce) {
9476                 err = -ENOMEM;
9477                 goto error;
9478         }
9479         cfg80211_rdev_free_coalesce(rdev);
9480         rdev->coalesce = n_coalesce;
9481
9482         return 0;
9483 error:
9484         for (i = 0; i < new_coalesce.n_rules; i++) {
9485                 tmp_rule = &new_coalesce.rules[i];
9486                 for (j = 0; j < tmp_rule->n_patterns; j++)
9487                         kfree(tmp_rule->patterns[j].mask);
9488                 kfree(tmp_rule->patterns);
9489         }
9490         kfree(new_coalesce.rules);
9491
9492         return err;
9493 }
9494
9495 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9496 {
9497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9498         struct net_device *dev = info->user_ptr[1];
9499         struct wireless_dev *wdev = dev->ieee80211_ptr;
9500         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9501         struct cfg80211_gtk_rekey_data rekey_data;
9502         int err;
9503
9504         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9505                 return -EINVAL;
9506
9507         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9508                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9509                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9510                         nl80211_rekey_policy);
9511         if (err)
9512                 return err;
9513
9514         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9515                 return -ERANGE;
9516         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9517                 return -ERANGE;
9518         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9519                 return -ERANGE;
9520
9521         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9522         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9523         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9524
9525         wdev_lock(wdev);
9526         if (!wdev->current_bss) {
9527                 err = -ENOTCONN;
9528                 goto out;
9529         }
9530
9531         if (!rdev->ops->set_rekey_data) {
9532                 err = -EOPNOTSUPP;
9533                 goto out;
9534         }
9535
9536         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9537  out:
9538         wdev_unlock(wdev);
9539         return err;
9540 }
9541
9542 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9543                                              struct genl_info *info)
9544 {
9545         struct net_device *dev = info->user_ptr[1];
9546         struct wireless_dev *wdev = dev->ieee80211_ptr;
9547
9548         if (wdev->iftype != NL80211_IFTYPE_AP &&
9549             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9550                 return -EINVAL;
9551
9552         if (wdev->ap_unexpected_nlportid)
9553                 return -EBUSY;
9554
9555         wdev->ap_unexpected_nlportid = info->snd_portid;
9556         return 0;
9557 }
9558
9559 static int nl80211_probe_client(struct sk_buff *skb,
9560                                 struct genl_info *info)
9561 {
9562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9563         struct net_device *dev = info->user_ptr[1];
9564         struct wireless_dev *wdev = dev->ieee80211_ptr;
9565         struct sk_buff *msg;
9566         void *hdr;
9567         const u8 *addr;
9568         u64 cookie;
9569         int err;
9570
9571         if (wdev->iftype != NL80211_IFTYPE_AP &&
9572             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9573                 return -EOPNOTSUPP;
9574
9575         if (!info->attrs[NL80211_ATTR_MAC])
9576                 return -EINVAL;
9577
9578         if (!rdev->ops->probe_client)
9579                 return -EOPNOTSUPP;
9580
9581         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9582         if (!msg)
9583                 return -ENOMEM;
9584
9585         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9586                              NL80211_CMD_PROBE_CLIENT);
9587         if (!hdr) {
9588                 err = -ENOBUFS;
9589                 goto free_msg;
9590         }
9591
9592         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9593
9594         err = rdev_probe_client(rdev, dev, addr, &cookie);
9595         if (err)
9596                 goto free_msg;
9597
9598         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9599                 goto nla_put_failure;
9600
9601         genlmsg_end(msg, hdr);
9602
9603         return genlmsg_reply(msg, info);
9604
9605  nla_put_failure:
9606         err = -ENOBUFS;
9607  free_msg:
9608         nlmsg_free(msg);
9609         return err;
9610 }
9611
9612 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9613 {
9614         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9615         struct cfg80211_beacon_registration *reg, *nreg;
9616         int rv;
9617
9618         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9619                 return -EOPNOTSUPP;
9620
9621         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9622         if (!nreg)
9623                 return -ENOMEM;
9624
9625         /* First, check if already registered. */
9626         spin_lock_bh(&rdev->beacon_registrations_lock);
9627         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9628                 if (reg->nlportid == info->snd_portid) {
9629                         rv = -EALREADY;
9630                         goto out_err;
9631                 }
9632         }
9633         /* Add it to the list */
9634         nreg->nlportid = info->snd_portid;
9635         list_add(&nreg->list, &rdev->beacon_registrations);
9636
9637         spin_unlock_bh(&rdev->beacon_registrations_lock);
9638
9639         return 0;
9640 out_err:
9641         spin_unlock_bh(&rdev->beacon_registrations_lock);
9642         kfree(nreg);
9643         return rv;
9644 }
9645
9646 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9647 {
9648         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9649         struct wireless_dev *wdev = info->user_ptr[1];
9650         int err;
9651
9652         if (!rdev->ops->start_p2p_device)
9653                 return -EOPNOTSUPP;
9654
9655         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9656                 return -EOPNOTSUPP;
9657
9658         if (wdev->p2p_started)
9659                 return 0;
9660
9661         if (rfkill_blocked(rdev->rfkill))
9662                 return -ERFKILL;
9663
9664         err = rdev_start_p2p_device(rdev, wdev);
9665         if (err)
9666                 return err;
9667
9668         wdev->p2p_started = true;
9669         rdev->opencount++;
9670
9671         return 0;
9672 }
9673
9674 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9675 {
9676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9677         struct wireless_dev *wdev = info->user_ptr[1];
9678
9679         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9680                 return -EOPNOTSUPP;
9681
9682         if (!rdev->ops->stop_p2p_device)
9683                 return -EOPNOTSUPP;
9684
9685         cfg80211_stop_p2p_device(rdev, wdev);
9686
9687         return 0;
9688 }
9689
9690 static int nl80211_get_protocol_features(struct sk_buff *skb,
9691                                          struct genl_info *info)
9692 {
9693         void *hdr;
9694         struct sk_buff *msg;
9695
9696         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9697         if (!msg)
9698                 return -ENOMEM;
9699
9700         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9701                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9702         if (!hdr)
9703                 goto nla_put_failure;
9704
9705         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9706                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9707                 goto nla_put_failure;
9708
9709         genlmsg_end(msg, hdr);
9710         return genlmsg_reply(msg, info);
9711
9712  nla_put_failure:
9713         kfree_skb(msg);
9714         return -ENOBUFS;
9715 }
9716
9717 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9718 {
9719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9720         struct cfg80211_update_ft_ies_params ft_params;
9721         struct net_device *dev = info->user_ptr[1];
9722
9723         if (!rdev->ops->update_ft_ies)
9724                 return -EOPNOTSUPP;
9725
9726         if (!info->attrs[NL80211_ATTR_MDID] ||
9727             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9728                 return -EINVAL;
9729
9730         memset(&ft_params, 0, sizeof(ft_params));
9731         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9732         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9733         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9734
9735         return rdev_update_ft_ies(rdev, dev, &ft_params);
9736 }
9737
9738 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9739                                        struct genl_info *info)
9740 {
9741         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9742         struct wireless_dev *wdev = info->user_ptr[1];
9743         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9744         u16 duration;
9745         int ret;
9746
9747         if (!rdev->ops->crit_proto_start)
9748                 return -EOPNOTSUPP;
9749
9750         if (WARN_ON(!rdev->ops->crit_proto_stop))
9751                 return -EINVAL;
9752
9753         if (rdev->crit_proto_nlportid)
9754                 return -EBUSY;
9755
9756         /* determine protocol if provided */
9757         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9758                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9759
9760         if (proto >= NUM_NL80211_CRIT_PROTO)
9761                 return -EINVAL;
9762
9763         /* timeout must be provided */
9764         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9765                 return -EINVAL;
9766
9767         duration =
9768                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9769
9770         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9771                 return -ERANGE;
9772
9773         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9774         if (!ret)
9775                 rdev->crit_proto_nlportid = info->snd_portid;
9776
9777         return ret;
9778 }
9779
9780 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9781                                       struct genl_info *info)
9782 {
9783         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9784         struct wireless_dev *wdev = info->user_ptr[1];
9785
9786         if (!rdev->ops->crit_proto_stop)
9787                 return -EOPNOTSUPP;
9788
9789         if (rdev->crit_proto_nlportid) {
9790                 rdev->crit_proto_nlportid = 0;
9791                 rdev_crit_proto_stop(rdev, wdev);
9792         }
9793         return 0;
9794 }
9795
9796 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9797 {
9798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9799         struct wireless_dev *wdev =
9800                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9801         int i, err;
9802         u32 vid, subcmd;
9803
9804         if (!rdev->wiphy.vendor_commands)
9805                 return -EOPNOTSUPP;
9806
9807         if (IS_ERR(wdev)) {
9808                 err = PTR_ERR(wdev);
9809                 if (err != -EINVAL)
9810                         return err;
9811                 wdev = NULL;
9812         } else if (wdev->wiphy != &rdev->wiphy) {
9813                 return -EINVAL;
9814         }
9815
9816         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9817             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9818                 return -EINVAL;
9819
9820         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9821         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9822         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9823                 const struct wiphy_vendor_command *vcmd;
9824                 void *data = NULL;
9825                 int len = 0;
9826
9827                 vcmd = &rdev->wiphy.vendor_commands[i];
9828
9829                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9830                         continue;
9831
9832                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9833                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9834                         if (!wdev)
9835                                 return -EINVAL;
9836                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9837                             !wdev->netdev)
9838                                 return -EINVAL;
9839
9840                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9841                                 if (wdev->netdev &&
9842                                     !netif_running(wdev->netdev))
9843                                         return -ENETDOWN;
9844                                 if (!wdev->netdev && !wdev->p2p_started)
9845                                         return -ENETDOWN;
9846                         }
9847                 } else {
9848                         wdev = NULL;
9849                 }
9850
9851                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9852                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9853                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9854                 }
9855
9856                 rdev->cur_cmd_info = info;
9857                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9858                                                           data, len);
9859                 rdev->cur_cmd_info = NULL;
9860                 return err;
9861         }
9862
9863         return -EOPNOTSUPP;
9864 }
9865
9866 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9867                                            enum nl80211_commands cmd,
9868                                            enum nl80211_attrs attr,
9869                                            int approxlen)
9870 {
9871         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9872
9873         if (WARN_ON(!rdev->cur_cmd_info))
9874                 return NULL;
9875
9876         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9877                                            rdev->cur_cmd_info->snd_portid,
9878                                            rdev->cur_cmd_info->snd_seq,
9879                                            cmd, attr, NULL, GFP_KERNEL);
9880 }
9881 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9882
9883 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9884 {
9885         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9886         void *hdr = ((void **)skb->cb)[1];
9887         struct nlattr *data = ((void **)skb->cb)[2];
9888
9889         /* clear CB data for netlink core to own from now on */
9890         memset(skb->cb, 0, sizeof(skb->cb));
9891
9892         if (WARN_ON(!rdev->cur_cmd_info)) {
9893                 kfree_skb(skb);
9894                 return -EINVAL;
9895         }
9896
9897         nla_nest_end(skb, data);
9898         genlmsg_end(skb, hdr);
9899         return genlmsg_reply(skb, rdev->cur_cmd_info);
9900 }
9901 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9902
9903
9904 static int nl80211_set_qos_map(struct sk_buff *skb,
9905                                struct genl_info *info)
9906 {
9907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9908         struct cfg80211_qos_map *qos_map = NULL;
9909         struct net_device *dev = info->user_ptr[1];
9910         u8 *pos, len, num_des, des_len, des;
9911         int ret;
9912
9913         if (!rdev->ops->set_qos_map)
9914                 return -EOPNOTSUPP;
9915
9916         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9917                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9918                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9919
9920                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9921                     len > IEEE80211_QOS_MAP_LEN_MAX)
9922                         return -EINVAL;
9923
9924                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9925                 if (!qos_map)
9926                         return -ENOMEM;
9927
9928                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9929                 if (num_des) {
9930                         des_len = num_des *
9931                                 sizeof(struct cfg80211_dscp_exception);
9932                         memcpy(qos_map->dscp_exception, pos, des_len);
9933                         qos_map->num_des = num_des;
9934                         for (des = 0; des < num_des; des++) {
9935                                 if (qos_map->dscp_exception[des].up > 7) {
9936                                         kfree(qos_map);
9937                                         return -EINVAL;
9938                                 }
9939                         }
9940                         pos += des_len;
9941                 }
9942                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9943         }
9944
9945         wdev_lock(dev->ieee80211_ptr);
9946         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9947         if (!ret)
9948                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9949         wdev_unlock(dev->ieee80211_ptr);
9950
9951         kfree(qos_map);
9952         return ret;
9953 }
9954
9955 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9956 {
9957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9958         struct net_device *dev = info->user_ptr[1];
9959         struct wireless_dev *wdev = dev->ieee80211_ptr;
9960         const u8 *peer;
9961         u8 tsid, up;
9962         u16 admitted_time = 0;
9963         int err;
9964
9965         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9966                 return -EOPNOTSUPP;
9967
9968         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9969             !info->attrs[NL80211_ATTR_USER_PRIO])
9970                 return -EINVAL;
9971
9972         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9973         if (tsid >= IEEE80211_NUM_TIDS)
9974                 return -EINVAL;
9975
9976         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9977         if (up >= IEEE80211_NUM_UPS)
9978                 return -EINVAL;
9979
9980         /* WMM uses TIDs 0-7 even for TSPEC */
9981         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9982                 /* TODO: handle 802.11 TSPEC/admission control
9983                  * need more attributes for that (e.g. BA session requirement);
9984                  * change the WMM adminssion test above to allow both then
9985                  */
9986                 return -EINVAL;
9987         }
9988
9989         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9990
9991         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9992                 admitted_time =
9993                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9994                 if (!admitted_time)
9995                         return -EINVAL;
9996         }
9997
9998         wdev_lock(wdev);
9999         switch (wdev->iftype) {
10000         case NL80211_IFTYPE_STATION:
10001         case NL80211_IFTYPE_P2P_CLIENT:
10002                 if (wdev->current_bss)
10003                         break;
10004                 err = -ENOTCONN;
10005                 goto out;
10006         default:
10007                 err = -EOPNOTSUPP;
10008                 goto out;
10009         }
10010
10011         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10012
10013  out:
10014         wdev_unlock(wdev);
10015         return err;
10016 }
10017
10018 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10019 {
10020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10021         struct net_device *dev = info->user_ptr[1];
10022         struct wireless_dev *wdev = dev->ieee80211_ptr;
10023         const u8 *peer;
10024         u8 tsid;
10025         int err;
10026
10027         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10028                 return -EINVAL;
10029
10030         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10031         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10032
10033         wdev_lock(wdev);
10034         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10035         wdev_unlock(wdev);
10036
10037         return err;
10038 }
10039
10040 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10041                                        struct genl_info *info)
10042 {
10043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10044         struct net_device *dev = info->user_ptr[1];
10045         struct wireless_dev *wdev = dev->ieee80211_ptr;
10046         struct cfg80211_chan_def chandef = {};
10047         const u8 *addr;
10048         u8 oper_class;
10049         int err;
10050
10051         if (!rdev->ops->tdls_channel_switch ||
10052             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10053                 return -EOPNOTSUPP;
10054
10055         switch (dev->ieee80211_ptr->iftype) {
10056         case NL80211_IFTYPE_STATION:
10057         case NL80211_IFTYPE_P2P_CLIENT:
10058                 break;
10059         default:
10060                 return -EOPNOTSUPP;
10061         }
10062
10063         if (!info->attrs[NL80211_ATTR_MAC] ||
10064             !info->attrs[NL80211_ATTR_OPER_CLASS])
10065                 return -EINVAL;
10066
10067         err = nl80211_parse_chandef(rdev, info, &chandef);
10068         if (err)
10069                 return err;
10070
10071         /*
10072          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10073          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10074          * specification is not defined for them.
10075          */
10076         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10077             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10078             chandef.width != NL80211_CHAN_WIDTH_20)
10079                 return -EINVAL;
10080
10081         /* we will be active on the TDLS link */
10082         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10083                 return -EINVAL;
10084
10085         /* don't allow switching to DFS channels */
10086         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10087                 return -EINVAL;
10088
10089         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10090         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10091
10092         wdev_lock(wdev);
10093         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10094         wdev_unlock(wdev);
10095
10096         return err;
10097 }
10098
10099 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10100                                               struct genl_info *info)
10101 {
10102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10103         struct net_device *dev = info->user_ptr[1];
10104         struct wireless_dev *wdev = dev->ieee80211_ptr;
10105         const u8 *addr;
10106
10107         if (!rdev->ops->tdls_channel_switch ||
10108             !rdev->ops->tdls_cancel_channel_switch ||
10109             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10110                 return -EOPNOTSUPP;
10111
10112         switch (dev->ieee80211_ptr->iftype) {
10113         case NL80211_IFTYPE_STATION:
10114         case NL80211_IFTYPE_P2P_CLIENT:
10115                 break;
10116         default:
10117                 return -EOPNOTSUPP;
10118         }
10119
10120         if (!info->attrs[NL80211_ATTR_MAC])
10121                 return -EINVAL;
10122
10123         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10124
10125         wdev_lock(wdev);
10126         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10127         wdev_unlock(wdev);
10128
10129         return 0;
10130 }
10131
10132 #define NL80211_FLAG_NEED_WIPHY         0x01
10133 #define NL80211_FLAG_NEED_NETDEV        0x02
10134 #define NL80211_FLAG_NEED_RTNL          0x04
10135 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10136 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10137                                          NL80211_FLAG_CHECK_NETDEV_UP)
10138 #define NL80211_FLAG_NEED_WDEV          0x10
10139 /* If a netdev is associated, it must be UP, P2P must be started */
10140 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10141                                          NL80211_FLAG_CHECK_NETDEV_UP)
10142 #define NL80211_FLAG_CLEAR_SKB          0x20
10143
10144 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10145                             struct genl_info *info)
10146 {
10147         struct cfg80211_registered_device *rdev;
10148         struct wireless_dev *wdev;
10149         struct net_device *dev;
10150         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10151
10152         if (rtnl)
10153                 rtnl_lock();
10154
10155         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10156                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10157                 if (IS_ERR(rdev)) {
10158                         if (rtnl)
10159                                 rtnl_unlock();
10160                         return PTR_ERR(rdev);
10161                 }
10162                 info->user_ptr[0] = rdev;
10163         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10164                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10165                 ASSERT_RTNL();
10166
10167                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10168                                                   info->attrs);
10169                 if (IS_ERR(wdev)) {
10170                         if (rtnl)
10171                                 rtnl_unlock();
10172                         return PTR_ERR(wdev);
10173                 }
10174
10175                 dev = wdev->netdev;
10176                 rdev = wiphy_to_rdev(wdev->wiphy);
10177
10178                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10179                         if (!dev) {
10180                                 if (rtnl)
10181                                         rtnl_unlock();
10182                                 return -EINVAL;
10183                         }
10184
10185                         info->user_ptr[1] = dev;
10186                 } else {
10187                         info->user_ptr[1] = wdev;
10188                 }
10189
10190                 if (dev) {
10191                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10192                             !netif_running(dev)) {
10193                                 if (rtnl)
10194                                         rtnl_unlock();
10195                                 return -ENETDOWN;
10196                         }
10197
10198                         dev_hold(dev);
10199                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10200                         if (!wdev->p2p_started) {
10201                                 if (rtnl)
10202                                         rtnl_unlock();
10203                                 return -ENETDOWN;
10204                         }
10205                 }
10206
10207                 info->user_ptr[0] = rdev;
10208         }
10209
10210         return 0;
10211 }
10212
10213 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10214                               struct genl_info *info)
10215 {
10216         if (info->user_ptr[1]) {
10217                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10218                         struct wireless_dev *wdev = info->user_ptr[1];
10219
10220                         if (wdev->netdev)
10221                                 dev_put(wdev->netdev);
10222                 } else {
10223                         dev_put(info->user_ptr[1]);
10224                 }
10225         }
10226
10227         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10228                 rtnl_unlock();
10229
10230         /* If needed, clear the netlink message payload from the SKB
10231          * as it might contain key data that shouldn't stick around on
10232          * the heap after the SKB is freed. The netlink message header
10233          * is still needed for further processing, so leave it intact.
10234          */
10235         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10236                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10237
10238                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10239         }
10240 }
10241
10242 static const struct genl_ops nl80211_ops[] = {
10243         {
10244                 .cmd = NL80211_CMD_GET_WIPHY,
10245                 .doit = nl80211_get_wiphy,
10246                 .dumpit = nl80211_dump_wiphy,
10247                 .done = nl80211_dump_wiphy_done,
10248                 .policy = nl80211_policy,
10249                 /* can be retrieved by unprivileged users */
10250                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10251                                   NL80211_FLAG_NEED_RTNL,
10252         },
10253         {
10254                 .cmd = NL80211_CMD_SET_WIPHY,
10255                 .doit = nl80211_set_wiphy,
10256                 .policy = nl80211_policy,
10257                 .flags = GENL_ADMIN_PERM,
10258                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10259         },
10260         {
10261                 .cmd = NL80211_CMD_GET_INTERFACE,
10262                 .doit = nl80211_get_interface,
10263                 .dumpit = nl80211_dump_interface,
10264                 .policy = nl80211_policy,
10265                 /* can be retrieved by unprivileged users */
10266                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10267                                   NL80211_FLAG_NEED_RTNL,
10268         },
10269         {
10270                 .cmd = NL80211_CMD_SET_INTERFACE,
10271                 .doit = nl80211_set_interface,
10272                 .policy = nl80211_policy,
10273                 .flags = GENL_ADMIN_PERM,
10274                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10275                                   NL80211_FLAG_NEED_RTNL,
10276         },
10277         {
10278                 .cmd = NL80211_CMD_NEW_INTERFACE,
10279                 .doit = nl80211_new_interface,
10280                 .policy = nl80211_policy,
10281                 .flags = GENL_ADMIN_PERM,
10282                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10283                                   NL80211_FLAG_NEED_RTNL,
10284         },
10285         {
10286                 .cmd = NL80211_CMD_DEL_INTERFACE,
10287                 .doit = nl80211_del_interface,
10288                 .policy = nl80211_policy,
10289                 .flags = GENL_ADMIN_PERM,
10290                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10291                                   NL80211_FLAG_NEED_RTNL,
10292         },
10293         {
10294                 .cmd = NL80211_CMD_GET_KEY,
10295                 .doit = nl80211_get_key,
10296                 .policy = nl80211_policy,
10297                 .flags = GENL_ADMIN_PERM,
10298                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10299                                   NL80211_FLAG_NEED_RTNL,
10300         },
10301         {
10302                 .cmd = NL80211_CMD_SET_KEY,
10303                 .doit = nl80211_set_key,
10304                 .policy = nl80211_policy,
10305                 .flags = GENL_ADMIN_PERM,
10306                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10307                                   NL80211_FLAG_NEED_RTNL |
10308                                   NL80211_FLAG_CLEAR_SKB,
10309         },
10310         {
10311                 .cmd = NL80211_CMD_NEW_KEY,
10312                 .doit = nl80211_new_key,
10313                 .policy = nl80211_policy,
10314                 .flags = GENL_ADMIN_PERM,
10315                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10316                                   NL80211_FLAG_NEED_RTNL |
10317                                   NL80211_FLAG_CLEAR_SKB,
10318         },
10319         {
10320                 .cmd = NL80211_CMD_DEL_KEY,
10321                 .doit = nl80211_del_key,
10322                 .policy = nl80211_policy,
10323                 .flags = GENL_ADMIN_PERM,
10324                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10325                                   NL80211_FLAG_NEED_RTNL,
10326         },
10327         {
10328                 .cmd = NL80211_CMD_SET_BEACON,
10329                 .policy = nl80211_policy,
10330                 .flags = GENL_ADMIN_PERM,
10331                 .doit = nl80211_set_beacon,
10332                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10333                                   NL80211_FLAG_NEED_RTNL,
10334         },
10335         {
10336                 .cmd = NL80211_CMD_START_AP,
10337                 .policy = nl80211_policy,
10338                 .flags = GENL_ADMIN_PERM,
10339                 .doit = nl80211_start_ap,
10340                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10341                                   NL80211_FLAG_NEED_RTNL,
10342         },
10343         {
10344                 .cmd = NL80211_CMD_STOP_AP,
10345                 .policy = nl80211_policy,
10346                 .flags = GENL_ADMIN_PERM,
10347                 .doit = nl80211_stop_ap,
10348                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10349                                   NL80211_FLAG_NEED_RTNL,
10350         },
10351         {
10352                 .cmd = NL80211_CMD_GET_STATION,
10353                 .doit = nl80211_get_station,
10354                 .dumpit = nl80211_dump_station,
10355                 .policy = nl80211_policy,
10356                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10357                                   NL80211_FLAG_NEED_RTNL,
10358         },
10359         {
10360                 .cmd = NL80211_CMD_SET_STATION,
10361                 .doit = nl80211_set_station,
10362                 .policy = nl80211_policy,
10363                 .flags = GENL_ADMIN_PERM,
10364                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10365                                   NL80211_FLAG_NEED_RTNL,
10366         },
10367         {
10368                 .cmd = NL80211_CMD_NEW_STATION,
10369                 .doit = nl80211_new_station,
10370                 .policy = nl80211_policy,
10371                 .flags = GENL_ADMIN_PERM,
10372                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10373                                   NL80211_FLAG_NEED_RTNL,
10374         },
10375         {
10376                 .cmd = NL80211_CMD_DEL_STATION,
10377                 .doit = nl80211_del_station,
10378                 .policy = nl80211_policy,
10379                 .flags = GENL_ADMIN_PERM,
10380                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10381                                   NL80211_FLAG_NEED_RTNL,
10382         },
10383         {
10384                 .cmd = NL80211_CMD_GET_MPATH,
10385                 .doit = nl80211_get_mpath,
10386                 .dumpit = nl80211_dump_mpath,
10387                 .policy = nl80211_policy,
10388                 .flags = GENL_ADMIN_PERM,
10389                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10390                                   NL80211_FLAG_NEED_RTNL,
10391         },
10392         {
10393                 .cmd = NL80211_CMD_GET_MPP,
10394                 .doit = nl80211_get_mpp,
10395                 .dumpit = nl80211_dump_mpp,
10396                 .policy = nl80211_policy,
10397                 .flags = GENL_ADMIN_PERM,
10398                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10399                                   NL80211_FLAG_NEED_RTNL,
10400         },
10401         {
10402                 .cmd = NL80211_CMD_SET_MPATH,
10403                 .doit = nl80211_set_mpath,
10404                 .policy = nl80211_policy,
10405                 .flags = GENL_ADMIN_PERM,
10406                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10407                                   NL80211_FLAG_NEED_RTNL,
10408         },
10409         {
10410                 .cmd = NL80211_CMD_NEW_MPATH,
10411                 .doit = nl80211_new_mpath,
10412                 .policy = nl80211_policy,
10413                 .flags = GENL_ADMIN_PERM,
10414                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10415                                   NL80211_FLAG_NEED_RTNL,
10416         },
10417         {
10418                 .cmd = NL80211_CMD_DEL_MPATH,
10419                 .doit = nl80211_del_mpath,
10420                 .policy = nl80211_policy,
10421                 .flags = GENL_ADMIN_PERM,
10422                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10423                                   NL80211_FLAG_NEED_RTNL,
10424         },
10425         {
10426                 .cmd = NL80211_CMD_SET_BSS,
10427                 .doit = nl80211_set_bss,
10428                 .policy = nl80211_policy,
10429                 .flags = GENL_ADMIN_PERM,
10430                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10431                                   NL80211_FLAG_NEED_RTNL,
10432         },
10433         {
10434                 .cmd = NL80211_CMD_GET_REG,
10435                 .doit = nl80211_get_reg_do,
10436                 .dumpit = nl80211_get_reg_dump,
10437                 .policy = nl80211_policy,
10438                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10439                 /* can be retrieved by unprivileged users */
10440         },
10441         {
10442                 .cmd = NL80211_CMD_SET_REG,
10443                 .doit = nl80211_set_reg,
10444                 .policy = nl80211_policy,
10445                 .flags = GENL_ADMIN_PERM,
10446                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10447         },
10448         {
10449                 .cmd = NL80211_CMD_REQ_SET_REG,
10450                 .doit = nl80211_req_set_reg,
10451                 .policy = nl80211_policy,
10452                 .flags = GENL_ADMIN_PERM,
10453         },
10454         {
10455                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10456                 .doit = nl80211_get_mesh_config,
10457                 .policy = nl80211_policy,
10458                 /* can be retrieved by unprivileged users */
10459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10460                                   NL80211_FLAG_NEED_RTNL,
10461         },
10462         {
10463                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10464                 .doit = nl80211_update_mesh_config,
10465                 .policy = nl80211_policy,
10466                 .flags = GENL_ADMIN_PERM,
10467                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10468                                   NL80211_FLAG_NEED_RTNL,
10469         },
10470         {
10471                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10472                 .doit = nl80211_trigger_scan,
10473                 .policy = nl80211_policy,
10474                 .flags = GENL_ADMIN_PERM,
10475                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10476                                   NL80211_FLAG_NEED_RTNL,
10477         },
10478         {
10479                 .cmd = NL80211_CMD_GET_SCAN,
10480                 .policy = nl80211_policy,
10481                 .dumpit = nl80211_dump_scan,
10482         },
10483         {
10484                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10485                 .doit = nl80211_start_sched_scan,
10486                 .policy = nl80211_policy,
10487                 .flags = GENL_ADMIN_PERM,
10488                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10489                                   NL80211_FLAG_NEED_RTNL,
10490         },
10491         {
10492                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10493                 .doit = nl80211_stop_sched_scan,
10494                 .policy = nl80211_policy,
10495                 .flags = GENL_ADMIN_PERM,
10496                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10497                                   NL80211_FLAG_NEED_RTNL,
10498         },
10499         {
10500                 .cmd = NL80211_CMD_AUTHENTICATE,
10501                 .doit = nl80211_authenticate,
10502                 .policy = nl80211_policy,
10503                 .flags = GENL_ADMIN_PERM,
10504                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10505                                   NL80211_FLAG_NEED_RTNL |
10506                                   NL80211_FLAG_CLEAR_SKB,
10507         },
10508         {
10509                 .cmd = NL80211_CMD_ASSOCIATE,
10510                 .doit = nl80211_associate,
10511                 .policy = nl80211_policy,
10512                 .flags = GENL_ADMIN_PERM,
10513                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10514                                   NL80211_FLAG_NEED_RTNL,
10515         },
10516         {
10517                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10518                 .doit = nl80211_deauthenticate,
10519                 .policy = nl80211_policy,
10520                 .flags = GENL_ADMIN_PERM,
10521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10522                                   NL80211_FLAG_NEED_RTNL,
10523         },
10524         {
10525                 .cmd = NL80211_CMD_DISASSOCIATE,
10526                 .doit = nl80211_disassociate,
10527                 .policy = nl80211_policy,
10528                 .flags = GENL_ADMIN_PERM,
10529                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10530                                   NL80211_FLAG_NEED_RTNL,
10531         },
10532         {
10533                 .cmd = NL80211_CMD_JOIN_IBSS,
10534                 .doit = nl80211_join_ibss,
10535                 .policy = nl80211_policy,
10536                 .flags = GENL_ADMIN_PERM,
10537                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10538                                   NL80211_FLAG_NEED_RTNL,
10539         },
10540         {
10541                 .cmd = NL80211_CMD_LEAVE_IBSS,
10542                 .doit = nl80211_leave_ibss,
10543                 .policy = nl80211_policy,
10544                 .flags = GENL_ADMIN_PERM,
10545                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10546                                   NL80211_FLAG_NEED_RTNL,
10547         },
10548 #ifdef CONFIG_NL80211_TESTMODE
10549         {
10550                 .cmd = NL80211_CMD_TESTMODE,
10551                 .doit = nl80211_testmode_do,
10552                 .dumpit = nl80211_testmode_dump,
10553                 .policy = nl80211_policy,
10554                 .flags = GENL_ADMIN_PERM,
10555                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10556                                   NL80211_FLAG_NEED_RTNL,
10557         },
10558 #endif
10559         {
10560                 .cmd = NL80211_CMD_CONNECT,
10561                 .doit = nl80211_connect,
10562                 .policy = nl80211_policy,
10563                 .flags = GENL_ADMIN_PERM,
10564                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10565                                   NL80211_FLAG_NEED_RTNL,
10566         },
10567         {
10568                 .cmd = NL80211_CMD_DISCONNECT,
10569                 .doit = nl80211_disconnect,
10570                 .policy = nl80211_policy,
10571                 .flags = GENL_ADMIN_PERM,
10572                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10573                                   NL80211_FLAG_NEED_RTNL,
10574         },
10575         {
10576                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10577                 .doit = nl80211_wiphy_netns,
10578                 .policy = nl80211_policy,
10579                 .flags = GENL_ADMIN_PERM,
10580                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10581                                   NL80211_FLAG_NEED_RTNL,
10582         },
10583         {
10584                 .cmd = NL80211_CMD_GET_SURVEY,
10585                 .policy = nl80211_policy,
10586                 .dumpit = nl80211_dump_survey,
10587         },
10588         {
10589                 .cmd = NL80211_CMD_SET_PMKSA,
10590                 .doit = nl80211_setdel_pmksa,
10591                 .policy = nl80211_policy,
10592                 .flags = GENL_ADMIN_PERM,
10593                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10594                                   NL80211_FLAG_NEED_RTNL,
10595         },
10596         {
10597                 .cmd = NL80211_CMD_DEL_PMKSA,
10598                 .doit = nl80211_setdel_pmksa,
10599                 .policy = nl80211_policy,
10600                 .flags = GENL_ADMIN_PERM,
10601                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10602                                   NL80211_FLAG_NEED_RTNL,
10603         },
10604         {
10605                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10606                 .doit = nl80211_flush_pmksa,
10607                 .policy = nl80211_policy,
10608                 .flags = GENL_ADMIN_PERM,
10609                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10610                                   NL80211_FLAG_NEED_RTNL,
10611         },
10612         {
10613                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10614                 .doit = nl80211_remain_on_channel,
10615                 .policy = nl80211_policy,
10616                 .flags = GENL_ADMIN_PERM,
10617                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10618                                   NL80211_FLAG_NEED_RTNL,
10619         },
10620         {
10621                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10622                 .doit = nl80211_cancel_remain_on_channel,
10623                 .policy = nl80211_policy,
10624                 .flags = GENL_ADMIN_PERM,
10625                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10626                                   NL80211_FLAG_NEED_RTNL,
10627         },
10628         {
10629                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10630                 .doit = nl80211_set_tx_bitrate_mask,
10631                 .policy = nl80211_policy,
10632                 .flags = GENL_ADMIN_PERM,
10633                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10634                                   NL80211_FLAG_NEED_RTNL,
10635         },
10636         {
10637                 .cmd = NL80211_CMD_REGISTER_FRAME,
10638                 .doit = nl80211_register_mgmt,
10639                 .policy = nl80211_policy,
10640                 .flags = GENL_ADMIN_PERM,
10641                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10642                                   NL80211_FLAG_NEED_RTNL,
10643         },
10644         {
10645                 .cmd = NL80211_CMD_FRAME,
10646                 .doit = nl80211_tx_mgmt,
10647                 .policy = nl80211_policy,
10648                 .flags = GENL_ADMIN_PERM,
10649                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10650                                   NL80211_FLAG_NEED_RTNL,
10651         },
10652         {
10653                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10654                 .doit = nl80211_tx_mgmt_cancel_wait,
10655                 .policy = nl80211_policy,
10656                 .flags = GENL_ADMIN_PERM,
10657                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10658                                   NL80211_FLAG_NEED_RTNL,
10659         },
10660         {
10661                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10662                 .doit = nl80211_set_power_save,
10663                 .policy = nl80211_policy,
10664                 .flags = GENL_ADMIN_PERM,
10665                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10666                                   NL80211_FLAG_NEED_RTNL,
10667         },
10668         {
10669                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10670                 .doit = nl80211_get_power_save,
10671                 .policy = nl80211_policy,
10672                 /* can be retrieved by unprivileged users */
10673                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10674                                   NL80211_FLAG_NEED_RTNL,
10675         },
10676         {
10677                 .cmd = NL80211_CMD_SET_CQM,
10678                 .doit = nl80211_set_cqm,
10679                 .policy = nl80211_policy,
10680                 .flags = GENL_ADMIN_PERM,
10681                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10682                                   NL80211_FLAG_NEED_RTNL,
10683         },
10684         {
10685                 .cmd = NL80211_CMD_SET_CHANNEL,
10686                 .doit = nl80211_set_channel,
10687                 .policy = nl80211_policy,
10688                 .flags = GENL_ADMIN_PERM,
10689                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10690                                   NL80211_FLAG_NEED_RTNL,
10691         },
10692         {
10693                 .cmd = NL80211_CMD_SET_WDS_PEER,
10694                 .doit = nl80211_set_wds_peer,
10695                 .policy = nl80211_policy,
10696                 .flags = GENL_ADMIN_PERM,
10697                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10698                                   NL80211_FLAG_NEED_RTNL,
10699         },
10700         {
10701                 .cmd = NL80211_CMD_JOIN_MESH,
10702                 .doit = nl80211_join_mesh,
10703                 .policy = nl80211_policy,
10704                 .flags = GENL_ADMIN_PERM,
10705                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10706                                   NL80211_FLAG_NEED_RTNL,
10707         },
10708         {
10709                 .cmd = NL80211_CMD_LEAVE_MESH,
10710                 .doit = nl80211_leave_mesh,
10711                 .policy = nl80211_policy,
10712                 .flags = GENL_ADMIN_PERM,
10713                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10714                                   NL80211_FLAG_NEED_RTNL,
10715         },
10716         {
10717                 .cmd = NL80211_CMD_JOIN_OCB,
10718                 .doit = nl80211_join_ocb,
10719                 .policy = nl80211_policy,
10720                 .flags = GENL_ADMIN_PERM,
10721                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10722                                   NL80211_FLAG_NEED_RTNL,
10723         },
10724         {
10725                 .cmd = NL80211_CMD_LEAVE_OCB,
10726                 .doit = nl80211_leave_ocb,
10727                 .policy = nl80211_policy,
10728                 .flags = GENL_ADMIN_PERM,
10729                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10730                                   NL80211_FLAG_NEED_RTNL,
10731         },
10732 #ifdef CONFIG_PM
10733         {
10734                 .cmd = NL80211_CMD_GET_WOWLAN,
10735                 .doit = nl80211_get_wowlan,
10736                 .policy = nl80211_policy,
10737                 /* can be retrieved by unprivileged users */
10738                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10739                                   NL80211_FLAG_NEED_RTNL,
10740         },
10741         {
10742                 .cmd = NL80211_CMD_SET_WOWLAN,
10743                 .doit = nl80211_set_wowlan,
10744                 .policy = nl80211_policy,
10745                 .flags = GENL_ADMIN_PERM,
10746                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10747                                   NL80211_FLAG_NEED_RTNL,
10748         },
10749 #endif
10750         {
10751                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10752                 .doit = nl80211_set_rekey_data,
10753                 .policy = nl80211_policy,
10754                 .flags = GENL_ADMIN_PERM,
10755                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10756                                   NL80211_FLAG_NEED_RTNL |
10757                                   NL80211_FLAG_CLEAR_SKB,
10758         },
10759         {
10760                 .cmd = NL80211_CMD_TDLS_MGMT,
10761                 .doit = nl80211_tdls_mgmt,
10762                 .policy = nl80211_policy,
10763                 .flags = GENL_ADMIN_PERM,
10764                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10765                                   NL80211_FLAG_NEED_RTNL,
10766         },
10767         {
10768                 .cmd = NL80211_CMD_TDLS_OPER,
10769                 .doit = nl80211_tdls_oper,
10770                 .policy = nl80211_policy,
10771                 .flags = GENL_ADMIN_PERM,
10772                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10773                                   NL80211_FLAG_NEED_RTNL,
10774         },
10775         {
10776                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10777                 .doit = nl80211_register_unexpected_frame,
10778                 .policy = nl80211_policy,
10779                 .flags = GENL_ADMIN_PERM,
10780                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10781                                   NL80211_FLAG_NEED_RTNL,
10782         },
10783         {
10784                 .cmd = NL80211_CMD_PROBE_CLIENT,
10785                 .doit = nl80211_probe_client,
10786                 .policy = nl80211_policy,
10787                 .flags = GENL_ADMIN_PERM,
10788                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10789                                   NL80211_FLAG_NEED_RTNL,
10790         },
10791         {
10792                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10793                 .doit = nl80211_register_beacons,
10794                 .policy = nl80211_policy,
10795                 .flags = GENL_ADMIN_PERM,
10796                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10797                                   NL80211_FLAG_NEED_RTNL,
10798         },
10799         {
10800                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10801                 .doit = nl80211_set_noack_map,
10802                 .policy = nl80211_policy,
10803                 .flags = GENL_ADMIN_PERM,
10804                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10805                                   NL80211_FLAG_NEED_RTNL,
10806         },
10807         {
10808                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10809                 .doit = nl80211_start_p2p_device,
10810                 .policy = nl80211_policy,
10811                 .flags = GENL_ADMIN_PERM,
10812                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10813                                   NL80211_FLAG_NEED_RTNL,
10814         },
10815         {
10816                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10817                 .doit = nl80211_stop_p2p_device,
10818                 .policy = nl80211_policy,
10819                 .flags = GENL_ADMIN_PERM,
10820                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10821                                   NL80211_FLAG_NEED_RTNL,
10822         },
10823         {
10824                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10825                 .doit = nl80211_set_mcast_rate,
10826                 .policy = nl80211_policy,
10827                 .flags = GENL_ADMIN_PERM,
10828                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10829                                   NL80211_FLAG_NEED_RTNL,
10830         },
10831         {
10832                 .cmd = NL80211_CMD_SET_MAC_ACL,
10833                 .doit = nl80211_set_mac_acl,
10834                 .policy = nl80211_policy,
10835                 .flags = GENL_ADMIN_PERM,
10836                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10837                                   NL80211_FLAG_NEED_RTNL,
10838         },
10839         {
10840                 .cmd = NL80211_CMD_RADAR_DETECT,
10841                 .doit = nl80211_start_radar_detection,
10842                 .policy = nl80211_policy,
10843                 .flags = GENL_ADMIN_PERM,
10844                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10845                                   NL80211_FLAG_NEED_RTNL,
10846         },
10847         {
10848                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10849                 .doit = nl80211_get_protocol_features,
10850                 .policy = nl80211_policy,
10851         },
10852         {
10853                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10854                 .doit = nl80211_update_ft_ies,
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_CRIT_PROTOCOL_START,
10862                 .doit = nl80211_crit_protocol_start,
10863                 .policy = nl80211_policy,
10864                 .flags = GENL_ADMIN_PERM,
10865                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10866                                   NL80211_FLAG_NEED_RTNL,
10867         },
10868         {
10869                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10870                 .doit = nl80211_crit_protocol_stop,
10871                 .policy = nl80211_policy,
10872                 .flags = GENL_ADMIN_PERM,
10873                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10874                                   NL80211_FLAG_NEED_RTNL,
10875         },
10876         {
10877                 .cmd = NL80211_CMD_GET_COALESCE,
10878                 .doit = nl80211_get_coalesce,
10879                 .policy = nl80211_policy,
10880                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10881                                   NL80211_FLAG_NEED_RTNL,
10882         },
10883         {
10884                 .cmd = NL80211_CMD_SET_COALESCE,
10885                 .doit = nl80211_set_coalesce,
10886                 .policy = nl80211_policy,
10887                 .flags = GENL_ADMIN_PERM,
10888                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10889                                   NL80211_FLAG_NEED_RTNL,
10890         },
10891         {
10892                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10893                 .doit = nl80211_channel_switch,
10894                 .policy = nl80211_policy,
10895                 .flags = GENL_ADMIN_PERM,
10896                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10897                                   NL80211_FLAG_NEED_RTNL,
10898         },
10899         {
10900                 .cmd = NL80211_CMD_VENDOR,
10901                 .doit = nl80211_vendor_cmd,
10902                 .policy = nl80211_policy,
10903                 .flags = GENL_ADMIN_PERM,
10904                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10905                                   NL80211_FLAG_NEED_RTNL,
10906         },
10907         {
10908                 .cmd = NL80211_CMD_SET_QOS_MAP,
10909                 .doit = nl80211_set_qos_map,
10910                 .policy = nl80211_policy,
10911                 .flags = GENL_ADMIN_PERM,
10912                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10913                                   NL80211_FLAG_NEED_RTNL,
10914         },
10915         {
10916                 .cmd = NL80211_CMD_ADD_TX_TS,
10917                 .doit = nl80211_add_tx_ts,
10918                 .policy = nl80211_policy,
10919                 .flags = GENL_ADMIN_PERM,
10920                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10921                                   NL80211_FLAG_NEED_RTNL,
10922         },
10923         {
10924                 .cmd = NL80211_CMD_DEL_TX_TS,
10925                 .doit = nl80211_del_tx_ts,
10926                 .policy = nl80211_policy,
10927                 .flags = GENL_ADMIN_PERM,
10928                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10929                                   NL80211_FLAG_NEED_RTNL,
10930         },
10931         {
10932                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10933                 .doit = nl80211_tdls_channel_switch,
10934                 .policy = nl80211_policy,
10935                 .flags = GENL_ADMIN_PERM,
10936                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10937                                   NL80211_FLAG_NEED_RTNL,
10938         },
10939         {
10940                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10941                 .doit = nl80211_tdls_cancel_channel_switch,
10942                 .policy = nl80211_policy,
10943                 .flags = GENL_ADMIN_PERM,
10944                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10945                                   NL80211_FLAG_NEED_RTNL,
10946         },
10947 };
10948
10949 /* notification functions */
10950
10951 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10952                           enum nl80211_commands cmd)
10953 {
10954         struct sk_buff *msg;
10955         struct nl80211_dump_wiphy_state state = {};
10956
10957         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10958                 cmd != NL80211_CMD_DEL_WIPHY);
10959
10960         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10961         if (!msg)
10962                 return;
10963
10964         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10965                 nlmsg_free(msg);
10966                 return;
10967         }
10968
10969         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10970                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10971 }
10972
10973 static int nl80211_add_scan_req(struct sk_buff *msg,
10974                                 struct cfg80211_registered_device *rdev)
10975 {
10976         struct cfg80211_scan_request *req = rdev->scan_req;
10977         struct nlattr *nest;
10978         int i;
10979
10980         if (WARN_ON(!req))
10981                 return 0;
10982
10983         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10984         if (!nest)
10985                 goto nla_put_failure;
10986         for (i = 0; i < req->n_ssids; i++) {
10987                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10988                         goto nla_put_failure;
10989         }
10990         nla_nest_end(msg, nest);
10991
10992         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10993         if (!nest)
10994                 goto nla_put_failure;
10995         for (i = 0; i < req->n_channels; i++) {
10996                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10997                         goto nla_put_failure;
10998         }
10999         nla_nest_end(msg, nest);
11000
11001         if (req->ie &&
11002             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11003                 goto nla_put_failure;
11004
11005         if (req->flags &&
11006             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11007                 goto nla_put_failure;
11008
11009         return 0;
11010  nla_put_failure:
11011         return -ENOBUFS;
11012 }
11013
11014 static int nl80211_send_scan_msg(struct sk_buff *msg,
11015                                  struct cfg80211_registered_device *rdev,
11016                                  struct wireless_dev *wdev,
11017                                  u32 portid, u32 seq, int flags,
11018                                  u32 cmd)
11019 {
11020         void *hdr;
11021
11022         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11023         if (!hdr)
11024                 return -1;
11025
11026         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11027             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11028                                          wdev->netdev->ifindex)) ||
11029             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11030                 goto nla_put_failure;
11031
11032         /* ignore errors and send incomplete event anyway */
11033         nl80211_add_scan_req(msg, rdev);
11034
11035         genlmsg_end(msg, hdr);
11036         return 0;
11037
11038  nla_put_failure:
11039         genlmsg_cancel(msg, hdr);
11040         return -EMSGSIZE;
11041 }
11042
11043 static int
11044 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11045                             struct cfg80211_registered_device *rdev,
11046                             struct net_device *netdev,
11047                             u32 portid, u32 seq, int flags, u32 cmd)
11048 {
11049         void *hdr;
11050
11051         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11052         if (!hdr)
11053                 return -1;
11054
11055         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11056             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11057                 goto nla_put_failure;
11058
11059         genlmsg_end(msg, hdr);
11060         return 0;
11061
11062  nla_put_failure:
11063         genlmsg_cancel(msg, hdr);
11064         return -EMSGSIZE;
11065 }
11066
11067 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11068                              struct wireless_dev *wdev)
11069 {
11070         struct sk_buff *msg;
11071
11072         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11073         if (!msg)
11074                 return;
11075
11076         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11077                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11078                 nlmsg_free(msg);
11079                 return;
11080         }
11081
11082         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11083                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11084 }
11085
11086 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11087                                        struct wireless_dev *wdev, bool aborted)
11088 {
11089         struct sk_buff *msg;
11090
11091         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11092         if (!msg)
11093                 return NULL;
11094
11095         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11096                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11097                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11098                 nlmsg_free(msg);
11099                 return NULL;
11100         }
11101
11102         return msg;
11103 }
11104
11105 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11106                               struct sk_buff *msg)
11107 {
11108         if (!msg)
11109                 return;
11110
11111         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11112                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11113 }
11114
11115 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11116                                      struct net_device *netdev)
11117 {
11118         struct sk_buff *msg;
11119
11120         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11121         if (!msg)
11122                 return;
11123
11124         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11125                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11126                 nlmsg_free(msg);
11127                 return;
11128         }
11129
11130         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11131                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11132 }
11133
11134 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11135                              struct net_device *netdev, u32 cmd)
11136 {
11137         struct sk_buff *msg;
11138
11139         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11140         if (!msg)
11141                 return;
11142
11143         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11144                 nlmsg_free(msg);
11145                 return;
11146         }
11147
11148         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11149                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11150 }
11151
11152 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11153                                           struct regulatory_request *request)
11154 {
11155         /* Userspace can always count this one always being set */
11156         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11157                 goto nla_put_failure;
11158
11159         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11160                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11161                                NL80211_REGDOM_TYPE_WORLD))
11162                         goto nla_put_failure;
11163         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11164                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11165                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11166                         goto nla_put_failure;
11167         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11168                    request->intersect) {
11169                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11170                                NL80211_REGDOM_TYPE_INTERSECTION))
11171                         goto nla_put_failure;
11172         } else {
11173                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11174                                NL80211_REGDOM_TYPE_COUNTRY) ||
11175                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11176                                    request->alpha2))
11177                         goto nla_put_failure;
11178         }
11179
11180         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11181                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11182
11183                 if (wiphy &&
11184                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11185                         goto nla_put_failure;
11186
11187                 if (wiphy &&
11188                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11189                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11190                         goto nla_put_failure;
11191         }
11192
11193         return true;
11194
11195 nla_put_failure:
11196         return false;
11197 }
11198
11199 /*
11200  * This can happen on global regulatory changes or device specific settings
11201  * based on custom regulatory domains.
11202  */
11203 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11204                                      struct regulatory_request *request)
11205 {
11206         struct sk_buff *msg;
11207         void *hdr;
11208
11209         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11210         if (!msg)
11211                 return;
11212
11213         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11214         if (!hdr) {
11215                 nlmsg_free(msg);
11216                 return;
11217         }
11218
11219         if (nl80211_reg_change_event_fill(msg, request) == false)
11220                 goto nla_put_failure;
11221
11222         genlmsg_end(msg, hdr);
11223
11224         rcu_read_lock();
11225         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11226                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11227         rcu_read_unlock();
11228
11229         return;
11230
11231 nla_put_failure:
11232         genlmsg_cancel(msg, hdr);
11233         nlmsg_free(msg);
11234 }
11235
11236 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11237                                     struct net_device *netdev,
11238                                     const u8 *buf, size_t len,
11239                                     enum nl80211_commands cmd, gfp_t gfp,
11240                                     int uapsd_queues)
11241 {
11242         struct sk_buff *msg;
11243         void *hdr;
11244
11245         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11246         if (!msg)
11247                 return;
11248
11249         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11250         if (!hdr) {
11251                 nlmsg_free(msg);
11252                 return;
11253         }
11254
11255         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11256             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11257             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11258                 goto nla_put_failure;
11259
11260         if (uapsd_queues >= 0) {
11261                 struct nlattr *nla_wmm =
11262                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11263                 if (!nla_wmm)
11264                         goto nla_put_failure;
11265
11266                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11267                                uapsd_queues))
11268                         goto nla_put_failure;
11269
11270                 nla_nest_end(msg, nla_wmm);
11271         }
11272
11273         genlmsg_end(msg, hdr);
11274
11275         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11276                                 NL80211_MCGRP_MLME, gfp);
11277         return;
11278
11279  nla_put_failure:
11280         genlmsg_cancel(msg, hdr);
11281         nlmsg_free(msg);
11282 }
11283
11284 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11285                           struct net_device *netdev, const u8 *buf,
11286                           size_t len, gfp_t gfp)
11287 {
11288         nl80211_send_mlme_event(rdev, netdev, buf, len,
11289                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11290 }
11291
11292 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11293                            struct net_device *netdev, const u8 *buf,
11294                            size_t len, gfp_t gfp, int uapsd_queues)
11295 {
11296         nl80211_send_mlme_event(rdev, netdev, buf, len,
11297                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11298 }
11299
11300 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11301                          struct net_device *netdev, const u8 *buf,
11302                          size_t len, gfp_t gfp)
11303 {
11304         nl80211_send_mlme_event(rdev, netdev, buf, len,
11305                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11306 }
11307
11308 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11309                            struct net_device *netdev, const u8 *buf,
11310                            size_t len, gfp_t gfp)
11311 {
11312         nl80211_send_mlme_event(rdev, netdev, buf, len,
11313                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11314 }
11315
11316 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11317                                   size_t len)
11318 {
11319         struct wireless_dev *wdev = dev->ieee80211_ptr;
11320         struct wiphy *wiphy = wdev->wiphy;
11321         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11322         const struct ieee80211_mgmt *mgmt = (void *)buf;
11323         u32 cmd;
11324
11325         if (WARN_ON(len < 2))
11326                 return;
11327
11328         if (ieee80211_is_deauth(mgmt->frame_control))
11329                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11330         else
11331                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11332
11333         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11334         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11335 }
11336 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11337
11338 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11339                                       struct net_device *netdev, int cmd,
11340                                       const u8 *addr, gfp_t gfp)
11341 {
11342         struct sk_buff *msg;
11343         void *hdr;
11344
11345         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11346         if (!msg)
11347                 return;
11348
11349         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11350         if (!hdr) {
11351                 nlmsg_free(msg);
11352                 return;
11353         }
11354
11355         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11356             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11357             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11358             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11359                 goto nla_put_failure;
11360
11361         genlmsg_end(msg, hdr);
11362
11363         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11364                                 NL80211_MCGRP_MLME, gfp);
11365         return;
11366
11367  nla_put_failure:
11368         genlmsg_cancel(msg, hdr);
11369         nlmsg_free(msg);
11370 }
11371
11372 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11373                                struct net_device *netdev, const u8 *addr,
11374                                gfp_t gfp)
11375 {
11376         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11377                                   addr, gfp);
11378 }
11379
11380 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11381                                 struct net_device *netdev, const u8 *addr,
11382                                 gfp_t gfp)
11383 {
11384         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11385                                   addr, gfp);
11386 }
11387
11388 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11389                                  struct net_device *netdev, const u8 *bssid,
11390                                  const u8 *req_ie, size_t req_ie_len,
11391                                  const u8 *resp_ie, size_t resp_ie_len,
11392                                  u16 status, gfp_t gfp)
11393 {
11394         struct sk_buff *msg;
11395         void *hdr;
11396
11397         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11398         if (!msg)
11399                 return;
11400
11401         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11402         if (!hdr) {
11403                 nlmsg_free(msg);
11404                 return;
11405         }
11406
11407         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11408             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11409             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11410             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11411             (req_ie &&
11412              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11413             (resp_ie &&
11414              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11415                 goto nla_put_failure;
11416
11417         genlmsg_end(msg, hdr);
11418
11419         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11420                                 NL80211_MCGRP_MLME, gfp);
11421         return;
11422
11423  nla_put_failure:
11424         genlmsg_cancel(msg, hdr);
11425         nlmsg_free(msg);
11426
11427 }
11428
11429 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11430                          struct net_device *netdev, const u8 *bssid,
11431                          const u8 *req_ie, size_t req_ie_len,
11432                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11433 {
11434         struct sk_buff *msg;
11435         void *hdr;
11436
11437         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11438         if (!msg)
11439                 return;
11440
11441         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11442         if (!hdr) {
11443                 nlmsg_free(msg);
11444                 return;
11445         }
11446
11447         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11448             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11449             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11450             (req_ie &&
11451              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11452             (resp_ie &&
11453              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11454                 goto nla_put_failure;
11455
11456         genlmsg_end(msg, hdr);
11457
11458         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11459                                 NL80211_MCGRP_MLME, gfp);
11460         return;
11461
11462  nla_put_failure:
11463         genlmsg_cancel(msg, hdr);
11464         nlmsg_free(msg);
11465
11466 }
11467
11468 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11469                                struct net_device *netdev, u16 reason,
11470                                const u8 *ie, size_t ie_len, bool from_ap)
11471 {
11472         struct sk_buff *msg;
11473         void *hdr;
11474
11475         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11476         if (!msg)
11477                 return;
11478
11479         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11480         if (!hdr) {
11481                 nlmsg_free(msg);
11482                 return;
11483         }
11484
11485         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11486             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11487             (from_ap && reason &&
11488              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11489             (from_ap &&
11490              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11491             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11492                 goto nla_put_failure;
11493
11494         genlmsg_end(msg, hdr);
11495
11496         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11497                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11498         return;
11499
11500  nla_put_failure:
11501         genlmsg_cancel(msg, hdr);
11502         nlmsg_free(msg);
11503
11504 }
11505
11506 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11507                              struct net_device *netdev, const u8 *bssid,
11508                              gfp_t gfp)
11509 {
11510         struct sk_buff *msg;
11511         void *hdr;
11512
11513         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11514         if (!msg)
11515                 return;
11516
11517         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11518         if (!hdr) {
11519                 nlmsg_free(msg);
11520                 return;
11521         }
11522
11523         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11524             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11525             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11526                 goto nla_put_failure;
11527
11528         genlmsg_end(msg, hdr);
11529
11530         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11531                                 NL80211_MCGRP_MLME, gfp);
11532         return;
11533
11534  nla_put_failure:
11535         genlmsg_cancel(msg, hdr);
11536         nlmsg_free(msg);
11537 }
11538
11539 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11540                                         const u8* ie, u8 ie_len, gfp_t gfp)
11541 {
11542         struct wireless_dev *wdev = dev->ieee80211_ptr;
11543         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11544         struct sk_buff *msg;
11545         void *hdr;
11546
11547         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11548                 return;
11549
11550         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11551
11552         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11553         if (!msg)
11554                 return;
11555
11556         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11557         if (!hdr) {
11558                 nlmsg_free(msg);
11559                 return;
11560         }
11561
11562         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11563             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11564             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11565             (ie_len && ie &&
11566              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11567                 goto nla_put_failure;
11568
11569         genlmsg_end(msg, hdr);
11570
11571         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11572                                 NL80211_MCGRP_MLME, gfp);
11573         return;
11574
11575  nla_put_failure:
11576         genlmsg_cancel(msg, hdr);
11577         nlmsg_free(msg);
11578 }
11579 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11580
11581 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11582                                  struct net_device *netdev, const u8 *addr,
11583                                  enum nl80211_key_type key_type, int key_id,
11584                                  const u8 *tsc, gfp_t gfp)
11585 {
11586         struct sk_buff *msg;
11587         void *hdr;
11588
11589         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11590         if (!msg)
11591                 return;
11592
11593         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11594         if (!hdr) {
11595                 nlmsg_free(msg);
11596                 return;
11597         }
11598
11599         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11600             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11601             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11602             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11603             (key_id != -1 &&
11604              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11605             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11606                 goto nla_put_failure;
11607
11608         genlmsg_end(msg, hdr);
11609
11610         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11611                                 NL80211_MCGRP_MLME, gfp);
11612         return;
11613
11614  nla_put_failure:
11615         genlmsg_cancel(msg, hdr);
11616         nlmsg_free(msg);
11617 }
11618
11619 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11620                                     struct ieee80211_channel *channel_before,
11621                                     struct ieee80211_channel *channel_after)
11622 {
11623         struct sk_buff *msg;
11624         void *hdr;
11625         struct nlattr *nl_freq;
11626
11627         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11628         if (!msg)
11629                 return;
11630
11631         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11632         if (!hdr) {
11633                 nlmsg_free(msg);
11634                 return;
11635         }
11636
11637         /*
11638          * Since we are applying the beacon hint to a wiphy we know its
11639          * wiphy_idx is valid
11640          */
11641         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11642                 goto nla_put_failure;
11643
11644         /* Before */
11645         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11646         if (!nl_freq)
11647                 goto nla_put_failure;
11648         if (nl80211_msg_put_channel(msg, channel_before, false))
11649                 goto nla_put_failure;
11650         nla_nest_end(msg, nl_freq);
11651
11652         /* After */
11653         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11654         if (!nl_freq)
11655                 goto nla_put_failure;
11656         if (nl80211_msg_put_channel(msg, channel_after, false))
11657                 goto nla_put_failure;
11658         nla_nest_end(msg, nl_freq);
11659
11660         genlmsg_end(msg, hdr);
11661
11662         rcu_read_lock();
11663         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11664                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11665         rcu_read_unlock();
11666
11667         return;
11668
11669 nla_put_failure:
11670         genlmsg_cancel(msg, hdr);
11671         nlmsg_free(msg);
11672 }
11673
11674 static void nl80211_send_remain_on_chan_event(
11675         int cmd, struct cfg80211_registered_device *rdev,
11676         struct wireless_dev *wdev, u64 cookie,
11677         struct ieee80211_channel *chan,
11678         unsigned int duration, gfp_t gfp)
11679 {
11680         struct sk_buff *msg;
11681         void *hdr;
11682
11683         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11684         if (!msg)
11685                 return;
11686
11687         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11688         if (!hdr) {
11689                 nlmsg_free(msg);
11690                 return;
11691         }
11692
11693         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11694             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11695                                          wdev->netdev->ifindex)) ||
11696             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11697             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11698             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11699                         NL80211_CHAN_NO_HT) ||
11700             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11701                 goto nla_put_failure;
11702
11703         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11704             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11705                 goto nla_put_failure;
11706
11707         genlmsg_end(msg, hdr);
11708
11709         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11710                                 NL80211_MCGRP_MLME, gfp);
11711         return;
11712
11713  nla_put_failure:
11714         genlmsg_cancel(msg, hdr);
11715         nlmsg_free(msg);
11716 }
11717
11718 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11719                                struct ieee80211_channel *chan,
11720                                unsigned int duration, gfp_t gfp)
11721 {
11722         struct wiphy *wiphy = wdev->wiphy;
11723         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11724
11725         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11726         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11727                                           rdev, wdev, cookie, chan,
11728                                           duration, gfp);
11729 }
11730 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11731
11732 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11733                                         struct ieee80211_channel *chan,
11734                                         gfp_t gfp)
11735 {
11736         struct wiphy *wiphy = wdev->wiphy;
11737         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11738
11739         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11740         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11741                                           rdev, wdev, cookie, chan, 0, gfp);
11742 }
11743 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11744
11745 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11746                       struct station_info *sinfo, gfp_t gfp)
11747 {
11748         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11749         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11750         struct sk_buff *msg;
11751
11752         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11753
11754         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11755         if (!msg)
11756                 return;
11757
11758         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11759                                  rdev, dev, mac_addr, sinfo) < 0) {
11760                 nlmsg_free(msg);
11761                 return;
11762         }
11763
11764         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11765                                 NL80211_MCGRP_MLME, gfp);
11766 }
11767 EXPORT_SYMBOL(cfg80211_new_sta);
11768
11769 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11770                             struct station_info *sinfo, gfp_t gfp)
11771 {
11772         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11773         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11774         struct sk_buff *msg;
11775         struct station_info empty_sinfo = {};
11776
11777         if (!sinfo)
11778                 sinfo = &empty_sinfo;
11779
11780         trace_cfg80211_del_sta(dev, mac_addr);
11781
11782         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11783         if (!msg)
11784                 return;
11785
11786         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11787                                  rdev, dev, mac_addr, sinfo)) {
11788                 nlmsg_free(msg);
11789                 return;
11790         }
11791
11792         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11793                                 NL80211_MCGRP_MLME, gfp);
11794 }
11795 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11796
11797 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11798                           enum nl80211_connect_failed_reason reason,
11799                           gfp_t gfp)
11800 {
11801         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11802         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11803         struct sk_buff *msg;
11804         void *hdr;
11805
11806         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11807         if (!msg)
11808                 return;
11809
11810         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11811         if (!hdr) {
11812                 nlmsg_free(msg);
11813                 return;
11814         }
11815
11816         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11817             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11818             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11819                 goto nla_put_failure;
11820
11821         genlmsg_end(msg, hdr);
11822
11823         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11824                                 NL80211_MCGRP_MLME, gfp);
11825         return;
11826
11827  nla_put_failure:
11828         genlmsg_cancel(msg, hdr);
11829         nlmsg_free(msg);
11830 }
11831 EXPORT_SYMBOL(cfg80211_conn_failed);
11832
11833 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11834                                        const u8 *addr, gfp_t gfp)
11835 {
11836         struct wireless_dev *wdev = dev->ieee80211_ptr;
11837         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11838         struct sk_buff *msg;
11839         void *hdr;
11840         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11841
11842         if (!nlportid)
11843                 return false;
11844
11845         msg = nlmsg_new(100, gfp);
11846         if (!msg)
11847                 return true;
11848
11849         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11850         if (!hdr) {
11851                 nlmsg_free(msg);
11852                 return true;
11853         }
11854
11855         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11856             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11857             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11858                 goto nla_put_failure;
11859
11860         genlmsg_end(msg, hdr);
11861         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11862         return true;
11863
11864  nla_put_failure:
11865         genlmsg_cancel(msg, hdr);
11866         nlmsg_free(msg);
11867         return true;
11868 }
11869
11870 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11871                                 const u8 *addr, gfp_t gfp)
11872 {
11873         struct wireless_dev *wdev = dev->ieee80211_ptr;
11874         bool ret;
11875
11876         trace_cfg80211_rx_spurious_frame(dev, addr);
11877
11878         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11879                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11880                 trace_cfg80211_return_bool(false);
11881                 return false;
11882         }
11883         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11884                                          addr, gfp);
11885         trace_cfg80211_return_bool(ret);
11886         return ret;
11887 }
11888 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11889
11890 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11891                                         const u8 *addr, gfp_t gfp)
11892 {
11893         struct wireless_dev *wdev = dev->ieee80211_ptr;
11894         bool ret;
11895
11896         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11897
11898         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11899                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11900                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11901                 trace_cfg80211_return_bool(false);
11902                 return false;
11903         }
11904         ret = __nl80211_unexpected_frame(dev,
11905                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11906                                          addr, gfp);
11907         trace_cfg80211_return_bool(ret);
11908         return ret;
11909 }
11910 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11911
11912 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11913                       struct wireless_dev *wdev, u32 nlportid,
11914                       int freq, int sig_dbm,
11915                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11916 {
11917         struct net_device *netdev = wdev->netdev;
11918         struct sk_buff *msg;
11919         void *hdr;
11920
11921         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11922         if (!msg)
11923                 return -ENOMEM;
11924
11925         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11926         if (!hdr) {
11927                 nlmsg_free(msg);
11928                 return -ENOMEM;
11929         }
11930
11931         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11932             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11933                                         netdev->ifindex)) ||
11934             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11935             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11936             (sig_dbm &&
11937              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11938             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11939             (flags &&
11940              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11941                 goto nla_put_failure;
11942
11943         genlmsg_end(msg, hdr);
11944
11945         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11946
11947  nla_put_failure:
11948         genlmsg_cancel(msg, hdr);
11949         nlmsg_free(msg);
11950         return -ENOBUFS;
11951 }
11952
11953 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11954                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11955 {
11956         struct wiphy *wiphy = wdev->wiphy;
11957         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11958         struct net_device *netdev = wdev->netdev;
11959         struct sk_buff *msg;
11960         void *hdr;
11961
11962         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11963
11964         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11965         if (!msg)
11966                 return;
11967
11968         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11969         if (!hdr) {
11970                 nlmsg_free(msg);
11971                 return;
11972         }
11973
11974         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11975             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11976                                    netdev->ifindex)) ||
11977             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11978             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11979             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11980             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11981                 goto nla_put_failure;
11982
11983         genlmsg_end(msg, hdr);
11984
11985         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11986                                 NL80211_MCGRP_MLME, gfp);
11987         return;
11988
11989  nla_put_failure:
11990         genlmsg_cancel(msg, hdr);
11991         nlmsg_free(msg);
11992 }
11993 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11994
11995 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11996                                             const char *mac, gfp_t gfp)
11997 {
11998         struct wireless_dev *wdev = dev->ieee80211_ptr;
11999         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12000         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12001         void **cb;
12002
12003         if (!msg)
12004                 return NULL;
12005
12006         cb = (void **)msg->cb;
12007
12008         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12009         if (!cb[0]) {
12010                 nlmsg_free(msg);
12011                 return NULL;
12012         }
12013
12014         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12015             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12016                 goto nla_put_failure;
12017
12018         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12019                 goto nla_put_failure;
12020
12021         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12022         if (!cb[1])
12023                 goto nla_put_failure;
12024
12025         cb[2] = rdev;
12026
12027         return msg;
12028  nla_put_failure:
12029         nlmsg_free(msg);
12030         return NULL;
12031 }
12032
12033 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12034 {
12035         void **cb = (void **)msg->cb;
12036         struct cfg80211_registered_device *rdev = cb[2];
12037
12038         nla_nest_end(msg, cb[1]);
12039         genlmsg_end(msg, cb[0]);
12040
12041         memset(msg->cb, 0, sizeof(msg->cb));
12042
12043         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12044                                 NL80211_MCGRP_MLME, gfp);
12045 }
12046
12047 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12048                               enum nl80211_cqm_rssi_threshold_event rssi_event,
12049                               gfp_t gfp)
12050 {
12051         struct sk_buff *msg;
12052
12053         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12054
12055         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12056                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12057                 return;
12058
12059         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12060         if (!msg)
12061                 return;
12062
12063         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12064                         rssi_event))
12065                 goto nla_put_failure;
12066
12067         cfg80211_send_cqm(msg, gfp);
12068
12069         return;
12070
12071  nla_put_failure:
12072         nlmsg_free(msg);
12073 }
12074 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12075
12076 void cfg80211_cqm_txe_notify(struct net_device *dev,
12077                              const u8 *peer, u32 num_packets,
12078                              u32 rate, u32 intvl, gfp_t gfp)
12079 {
12080         struct sk_buff *msg;
12081
12082         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12083         if (!msg)
12084                 return;
12085
12086         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12087                 goto nla_put_failure;
12088
12089         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12090                 goto nla_put_failure;
12091
12092         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12093                 goto nla_put_failure;
12094
12095         cfg80211_send_cqm(msg, gfp);
12096         return;
12097
12098  nla_put_failure:
12099         nlmsg_free(msg);
12100 }
12101 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12102
12103 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12104                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12105 {
12106         struct sk_buff *msg;
12107
12108         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12109
12110         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12111         if (!msg)
12112                 return;
12113
12114         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12115                 goto nla_put_failure;
12116
12117         cfg80211_send_cqm(msg, gfp);
12118         return;
12119
12120  nla_put_failure:
12121         nlmsg_free(msg);
12122 }
12123 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12124
12125 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12126 {
12127         struct sk_buff *msg;
12128
12129         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12130         if (!msg)
12131                 return;
12132
12133         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12134                 goto nla_put_failure;
12135
12136         cfg80211_send_cqm(msg, gfp);
12137         return;
12138
12139  nla_put_failure:
12140         nlmsg_free(msg);
12141 }
12142 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12143
12144 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12145                                      struct net_device *netdev, const u8 *bssid,
12146                                      const u8 *replay_ctr, gfp_t gfp)
12147 {
12148         struct sk_buff *msg;
12149         struct nlattr *rekey_attr;
12150         void *hdr;
12151
12152         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12153         if (!msg)
12154                 return;
12155
12156         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12157         if (!hdr) {
12158                 nlmsg_free(msg);
12159                 return;
12160         }
12161
12162         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12163             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12164             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12165                 goto nla_put_failure;
12166
12167         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12168         if (!rekey_attr)
12169                 goto nla_put_failure;
12170
12171         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12172                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12173                 goto nla_put_failure;
12174
12175         nla_nest_end(msg, rekey_attr);
12176
12177         genlmsg_end(msg, hdr);
12178
12179         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12180                                 NL80211_MCGRP_MLME, gfp);
12181         return;
12182
12183  nla_put_failure:
12184         genlmsg_cancel(msg, hdr);
12185         nlmsg_free(msg);
12186 }
12187
12188 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12189                                const u8 *replay_ctr, gfp_t gfp)
12190 {
12191         struct wireless_dev *wdev = dev->ieee80211_ptr;
12192         struct wiphy *wiphy = wdev->wiphy;
12193         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12194
12195         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12196         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12197 }
12198 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12199
12200 static void
12201 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12202                                struct net_device *netdev, int index,
12203                                const u8 *bssid, bool preauth, gfp_t gfp)
12204 {
12205         struct sk_buff *msg;
12206         struct nlattr *attr;
12207         void *hdr;
12208
12209         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12210         if (!msg)
12211                 return;
12212
12213         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12214         if (!hdr) {
12215                 nlmsg_free(msg);
12216                 return;
12217         }
12218
12219         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12220             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12221                 goto nla_put_failure;
12222
12223         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12224         if (!attr)
12225                 goto nla_put_failure;
12226
12227         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12228             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12229             (preauth &&
12230              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12231                 goto nla_put_failure;
12232
12233         nla_nest_end(msg, attr);
12234
12235         genlmsg_end(msg, hdr);
12236
12237         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12238                                 NL80211_MCGRP_MLME, gfp);
12239         return;
12240
12241  nla_put_failure:
12242         genlmsg_cancel(msg, hdr);
12243         nlmsg_free(msg);
12244 }
12245
12246 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12247                                      const u8 *bssid, bool preauth, gfp_t gfp)
12248 {
12249         struct wireless_dev *wdev = dev->ieee80211_ptr;
12250         struct wiphy *wiphy = wdev->wiphy;
12251         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12252
12253         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12254         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12255 }
12256 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12257
12258 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12259                                      struct net_device *netdev,
12260                                      struct cfg80211_chan_def *chandef,
12261                                      gfp_t gfp,
12262                                      enum nl80211_commands notif,
12263                                      u8 count)
12264 {
12265         struct sk_buff *msg;
12266         void *hdr;
12267
12268         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12269         if (!msg)
12270                 return;
12271
12272         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12273         if (!hdr) {
12274                 nlmsg_free(msg);
12275                 return;
12276         }
12277
12278         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12279                 goto nla_put_failure;
12280
12281         if (nl80211_send_chandef(msg, chandef))
12282                 goto nla_put_failure;
12283
12284         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12285             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12286                         goto nla_put_failure;
12287
12288         genlmsg_end(msg, hdr);
12289
12290         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12291                                 NL80211_MCGRP_MLME, gfp);
12292         return;
12293
12294  nla_put_failure:
12295         genlmsg_cancel(msg, hdr);
12296         nlmsg_free(msg);
12297 }
12298
12299 void cfg80211_ch_switch_notify(struct net_device *dev,
12300                                struct cfg80211_chan_def *chandef)
12301 {
12302         struct wireless_dev *wdev = dev->ieee80211_ptr;
12303         struct wiphy *wiphy = wdev->wiphy;
12304         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12305
12306         ASSERT_WDEV_LOCK(wdev);
12307
12308         trace_cfg80211_ch_switch_notify(dev, chandef);
12309
12310         wdev->chandef = *chandef;
12311         wdev->preset_chandef = *chandef;
12312         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12313                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12314 }
12315 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12316
12317 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12318                                        struct cfg80211_chan_def *chandef,
12319                                        u8 count)
12320 {
12321         struct wireless_dev *wdev = dev->ieee80211_ptr;
12322         struct wiphy *wiphy = wdev->wiphy;
12323         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12324
12325         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12326
12327         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12328                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12329 }
12330 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12331
12332 void
12333 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12334                      const struct cfg80211_chan_def *chandef,
12335                      enum nl80211_radar_event event,
12336                      struct net_device *netdev, gfp_t gfp)
12337 {
12338         struct sk_buff *msg;
12339         void *hdr;
12340
12341         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12342         if (!msg)
12343                 return;
12344
12345         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12346         if (!hdr) {
12347                 nlmsg_free(msg);
12348                 return;
12349         }
12350
12351         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12352                 goto nla_put_failure;
12353
12354         /* NOP and radar events don't need a netdev parameter */
12355         if (netdev) {
12356                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12357
12358                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12359                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12360                         goto nla_put_failure;
12361         }
12362
12363         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12364                 goto nla_put_failure;
12365
12366         if (nl80211_send_chandef(msg, chandef))
12367                 goto nla_put_failure;
12368
12369         genlmsg_end(msg, hdr);
12370
12371         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12372                                 NL80211_MCGRP_MLME, gfp);
12373         return;
12374
12375  nla_put_failure:
12376         genlmsg_cancel(msg, hdr);
12377         nlmsg_free(msg);
12378 }
12379
12380 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12381                            u64 cookie, bool acked, gfp_t gfp)
12382 {
12383         struct wireless_dev *wdev = dev->ieee80211_ptr;
12384         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12385         struct sk_buff *msg;
12386         void *hdr;
12387
12388         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12389
12390         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12391
12392         if (!msg)
12393                 return;
12394
12395         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12396         if (!hdr) {
12397                 nlmsg_free(msg);
12398                 return;
12399         }
12400
12401         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12402             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12403             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12404             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12405             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12406                 goto nla_put_failure;
12407
12408         genlmsg_end(msg, hdr);
12409
12410         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12411                                 NL80211_MCGRP_MLME, gfp);
12412         return;
12413
12414  nla_put_failure:
12415         genlmsg_cancel(msg, hdr);
12416         nlmsg_free(msg);
12417 }
12418 EXPORT_SYMBOL(cfg80211_probe_status);
12419
12420 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12421                                  const u8 *frame, size_t len,
12422                                  int freq, int sig_dbm)
12423 {
12424         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12425         struct sk_buff *msg;
12426         void *hdr;
12427         struct cfg80211_beacon_registration *reg;
12428
12429         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12430
12431         spin_lock_bh(&rdev->beacon_registrations_lock);
12432         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12433                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12434                 if (!msg) {
12435                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12436                         return;
12437                 }
12438
12439                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12440                 if (!hdr)
12441                         goto nla_put_failure;
12442
12443                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12444                     (freq &&
12445                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12446                     (sig_dbm &&
12447                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12448                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12449                         goto nla_put_failure;
12450
12451                 genlmsg_end(msg, hdr);
12452
12453                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12454         }
12455         spin_unlock_bh(&rdev->beacon_registrations_lock);
12456         return;
12457
12458  nla_put_failure:
12459         spin_unlock_bh(&rdev->beacon_registrations_lock);
12460         if (hdr)
12461                 genlmsg_cancel(msg, hdr);
12462         nlmsg_free(msg);
12463 }
12464 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12465
12466 #ifdef CONFIG_PM
12467 static int cfg80211_net_detect_results(struct sk_buff *msg,
12468                                        struct cfg80211_wowlan_wakeup *wakeup)
12469 {
12470         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12471         struct nlattr *nl_results, *nl_match, *nl_freqs;
12472         int i, j;
12473
12474         nl_results = nla_nest_start(
12475                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12476         if (!nl_results)
12477                 return -EMSGSIZE;
12478
12479         for (i = 0; i < nd->n_matches; i++) {
12480                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12481
12482                 nl_match = nla_nest_start(msg, i);
12483                 if (!nl_match)
12484                         break;
12485
12486                 /* The SSID attribute is optional in nl80211, but for
12487                  * simplicity reasons it's always present in the
12488                  * cfg80211 structure.  If a driver can't pass the
12489                  * SSID, that needs to be changed.  A zero length SSID
12490                  * is still a valid SSID (wildcard), so it cannot be
12491                  * used for this purpose.
12492                  */
12493                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12494                             match->ssid.ssid)) {
12495                         nla_nest_cancel(msg, nl_match);
12496                         goto out;
12497                 }
12498
12499                 if (match->n_channels) {
12500                         nl_freqs = nla_nest_start(
12501                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12502                         if (!nl_freqs) {
12503                                 nla_nest_cancel(msg, nl_match);
12504                                 goto out;
12505                         }
12506
12507                         for (j = 0; j < match->n_channels; j++) {
12508                                 if (nla_put_u32(msg,
12509                                                 NL80211_ATTR_WIPHY_FREQ,
12510                                                 match->channels[j])) {
12511                                         nla_nest_cancel(msg, nl_freqs);
12512                                         nla_nest_cancel(msg, nl_match);
12513                                         goto out;
12514                                 }
12515                         }
12516
12517                         nla_nest_end(msg, nl_freqs);
12518                 }
12519
12520                 nla_nest_end(msg, nl_match);
12521         }
12522
12523 out:
12524         nla_nest_end(msg, nl_results);
12525         return 0;
12526 }
12527
12528 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12529                                    struct cfg80211_wowlan_wakeup *wakeup,
12530                                    gfp_t gfp)
12531 {
12532         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12533         struct sk_buff *msg;
12534         void *hdr;
12535         int size = 200;
12536
12537         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12538
12539         if (wakeup)
12540                 size += wakeup->packet_present_len;
12541
12542         msg = nlmsg_new(size, gfp);
12543         if (!msg)
12544                 return;
12545
12546         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12547         if (!hdr)
12548                 goto free_msg;
12549
12550         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12551             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12552                 goto free_msg;
12553
12554         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12555                                         wdev->netdev->ifindex))
12556                 goto free_msg;
12557
12558         if (wakeup) {
12559                 struct nlattr *reasons;
12560
12561                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12562                 if (!reasons)
12563                         goto free_msg;
12564
12565                 if (wakeup->disconnect &&
12566                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12567                         goto free_msg;
12568                 if (wakeup->magic_pkt &&
12569                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12570                         goto free_msg;
12571                 if (wakeup->gtk_rekey_failure &&
12572                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12573                         goto free_msg;
12574                 if (wakeup->eap_identity_req &&
12575                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12576                         goto free_msg;
12577                 if (wakeup->four_way_handshake &&
12578                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12579                         goto free_msg;
12580                 if (wakeup->rfkill_release &&
12581                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12582                         goto free_msg;
12583
12584                 if (wakeup->pattern_idx >= 0 &&
12585                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12586                                 wakeup->pattern_idx))
12587                         goto free_msg;
12588
12589                 if (wakeup->tcp_match &&
12590                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12591                         goto free_msg;
12592
12593                 if (wakeup->tcp_connlost &&
12594                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12595                         goto free_msg;
12596
12597                 if (wakeup->tcp_nomoretokens &&
12598                     nla_put_flag(msg,
12599                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12600                         goto free_msg;
12601
12602                 if (wakeup->packet) {
12603                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12604                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12605
12606                         if (!wakeup->packet_80211) {
12607                                 pkt_attr =
12608                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12609                                 len_attr =
12610                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12611                         }
12612
12613                         if (wakeup->packet_len &&
12614                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12615                                 goto free_msg;
12616
12617                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12618                                     wakeup->packet))
12619                                 goto free_msg;
12620                 }
12621
12622                 if (wakeup->net_detect &&
12623                     cfg80211_net_detect_results(msg, wakeup))
12624                                 goto free_msg;
12625
12626                 nla_nest_end(msg, reasons);
12627         }
12628
12629         genlmsg_end(msg, hdr);
12630
12631         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12632                                 NL80211_MCGRP_MLME, gfp);
12633         return;
12634
12635  free_msg:
12636         nlmsg_free(msg);
12637 }
12638 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12639 #endif
12640
12641 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12642                                 enum nl80211_tdls_operation oper,
12643                                 u16 reason_code, gfp_t gfp)
12644 {
12645         struct wireless_dev *wdev = dev->ieee80211_ptr;
12646         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12647         struct sk_buff *msg;
12648         void *hdr;
12649
12650         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12651                                          reason_code);
12652
12653         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12654         if (!msg)
12655                 return;
12656
12657         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12658         if (!hdr) {
12659                 nlmsg_free(msg);
12660                 return;
12661         }
12662
12663         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12664             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12665             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12666             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12667             (reason_code > 0 &&
12668              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12669                 goto nla_put_failure;
12670
12671         genlmsg_end(msg, hdr);
12672
12673         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12674                                 NL80211_MCGRP_MLME, gfp);
12675         return;
12676
12677  nla_put_failure:
12678         genlmsg_cancel(msg, hdr);
12679         nlmsg_free(msg);
12680 }
12681 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12682
12683 static int nl80211_netlink_notify(struct notifier_block * nb,
12684                                   unsigned long state,
12685                                   void *_notify)
12686 {
12687         struct netlink_notify *notify = _notify;
12688         struct cfg80211_registered_device *rdev;
12689         struct wireless_dev *wdev;
12690         struct cfg80211_beacon_registration *reg, *tmp;
12691
12692         if (state != NETLINK_URELEASE)
12693                 return NOTIFY_DONE;
12694
12695         rcu_read_lock();
12696
12697         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12698                 bool schedule_destroy_work = false;
12699                 bool schedule_scan_stop = false;
12700                 struct cfg80211_sched_scan_request *sched_scan_req =
12701                         rcu_dereference(rdev->sched_scan_req);
12702
12703                 if (sched_scan_req && notify->portid &&
12704                     sched_scan_req->owner_nlportid == notify->portid)
12705                         schedule_scan_stop = true;
12706
12707                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12708                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12709
12710                         if (wdev->owner_nlportid == notify->portid)
12711                                 schedule_destroy_work = true;
12712                 }
12713
12714                 spin_lock_bh(&rdev->beacon_registrations_lock);
12715                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12716                                          list) {
12717                         if (reg->nlportid == notify->portid) {
12718                                 list_del(&reg->list);
12719                                 kfree(reg);
12720                                 break;
12721                         }
12722                 }
12723                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12724
12725                 if (schedule_destroy_work) {
12726                         struct cfg80211_iface_destroy *destroy;
12727
12728                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12729                         if (destroy) {
12730                                 destroy->nlportid = notify->portid;
12731                                 spin_lock(&rdev->destroy_list_lock);
12732                                 list_add(&destroy->list, &rdev->destroy_list);
12733                                 spin_unlock(&rdev->destroy_list_lock);
12734                                 schedule_work(&rdev->destroy_work);
12735                         }
12736                 } else if (schedule_scan_stop) {
12737                         sched_scan_req->owner_nlportid = 0;
12738
12739                         if (rdev->ops->sched_scan_stop &&
12740                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12741                                 schedule_work(&rdev->sched_scan_stop_wk);
12742                 }
12743         }
12744
12745         rcu_read_unlock();
12746
12747         return NOTIFY_OK;
12748 }
12749
12750 static struct notifier_block nl80211_netlink_notifier = {
12751         .notifier_call = nl80211_netlink_notify,
12752 };
12753
12754 void cfg80211_ft_event(struct net_device *netdev,
12755                        struct cfg80211_ft_event_params *ft_event)
12756 {
12757         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12758         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12759         struct sk_buff *msg;
12760         void *hdr;
12761
12762         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12763
12764         if (!ft_event->target_ap)
12765                 return;
12766
12767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12768         if (!msg)
12769                 return;
12770
12771         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12772         if (!hdr)
12773                 goto out;
12774
12775         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12776             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12777             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12778                 goto out;
12779
12780         if (ft_event->ies &&
12781             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12782                 goto out;
12783         if (ft_event->ric_ies &&
12784             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12785                     ft_event->ric_ies))
12786                 goto out;
12787
12788         genlmsg_end(msg, hdr);
12789
12790         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12791                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12792         return;
12793  out:
12794         nlmsg_free(msg);
12795 }
12796 EXPORT_SYMBOL(cfg80211_ft_event);
12797
12798 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12799 {
12800         struct cfg80211_registered_device *rdev;
12801         struct sk_buff *msg;
12802         void *hdr;
12803         u32 nlportid;
12804
12805         rdev = wiphy_to_rdev(wdev->wiphy);
12806         if (!rdev->crit_proto_nlportid)
12807                 return;
12808
12809         nlportid = rdev->crit_proto_nlportid;
12810         rdev->crit_proto_nlportid = 0;
12811
12812         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12813         if (!msg)
12814                 return;
12815
12816         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12817         if (!hdr)
12818                 goto nla_put_failure;
12819
12820         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12821             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12822                 goto nla_put_failure;
12823
12824         genlmsg_end(msg, hdr);
12825
12826         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12827         return;
12828
12829  nla_put_failure:
12830         if (hdr)
12831                 genlmsg_cancel(msg, hdr);
12832         nlmsg_free(msg);
12833
12834 }
12835 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12836
12837 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12838 {
12839         struct wiphy *wiphy = wdev->wiphy;
12840         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12841         struct sk_buff *msg;
12842         void *hdr;
12843
12844         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12845         if (!msg)
12846                 return;
12847
12848         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12849         if (!hdr)
12850                 goto out;
12851
12852         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12853             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12854             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12855                 goto out;
12856
12857         genlmsg_end(msg, hdr);
12858
12859         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12860                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12861         return;
12862  out:
12863         nlmsg_free(msg);
12864 }
12865
12866 /* initialisation/exit functions */
12867
12868 int nl80211_init(void)
12869 {
12870         int err;
12871
12872         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12873                                                    nl80211_mcgrps);
12874         if (err)
12875                 return err;
12876
12877         err = netlink_register_notifier(&nl80211_netlink_notifier);
12878         if (err)
12879                 goto err_out;
12880
12881         return 0;
12882  err_out:
12883         genl_unregister_family(&nl80211_fam);
12884         return err;
12885 }
12886
12887 void nl80211_exit(void)
12888 {
12889         netlink_unregister_notifier(&nl80211_netlink_notifier);
12890         genl_unregister_family(&nl80211_fam);
12891 }