Pileus Git - ~andy/linux/blob - 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  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/slab.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <linux/etherdevice.h>
  18 #include <net/net_namespace.h>
  19 #include <net/genetlink.h>
  20 #include <net/cfg80211.h>
  21 #include <net/sock.h>
  22 #include "core.h"
  23 #include "nl80211.h"
  24 #include "reg.h"
  25
  26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
  27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  28                                    struct genl_info *info,
  29                                    struct cfg80211_crypto_settings *settings,
  30                                    int cipher_limit);
  31
  32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
  33                             struct genl_info *info);
  34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
  35                               struct genl_info *info);
  36
  37 /* the netlink family */
  38 static struct genl_family nl80211_fam = {
  39         .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
  40         .name = "nl80211",      /* have users key off the name instead */
  41         .hdrsize = 0,           /* no private header */
  42         .version = 1,           /* no particular meaning now */
  43         .maxattr = NL80211_ATTR_MAX,
  44         .netnsok = true,
  45         .pre_doit = nl80211_pre_doit,
  46         .post_doit = nl80211_post_doit,
  47 };
  48
  49 /* internal helper: get rdev and dev */
  50 static int get_rdev_dev_by_ifindex(struct net *netns, struct nlattr **attrs,
  51                                    struct cfg80211_registered_device **rdev,
  52                                    struct net_device **dev)
  53 {
  54         int ifindex;
  55
  56         if (!attrs[NL80211_ATTR_IFINDEX])
  57                 return -EINVAL;
  58
  59         ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  60         *dev = dev_get_by_index(netns, ifindex);
  61         if (!*dev)
  62                 return -ENODEV;
  63
  64         *rdev = cfg80211_get_dev_from_ifindex(netns, ifindex);
  65         if (IS_ERR(*rdev)) {
  66                 dev_put(*dev);
  67                 return PTR_ERR(*rdev);
  68         }
  69
  70         return 0;
  71 }
  72
  73 static struct cfg80211_registered_device *
  74 __cfg80211_rdev_from_info(struct net *netns, struct genl_info *info)
  75 {
  76         struct cfg80211_registered_device *rdev = NULL, *tmp;
  77         struct net_device *netdev;
  78
  79         assert_cfg80211_lock();
  80
  81         if (!info->attrs[NL80211_ATTR_WIPHY] &&
  82             !info->attrs[NL80211_ATTR_IFINDEX])
  83                 return ERR_PTR(-EINVAL);
  84
  85         if (info->attrs[NL80211_ATTR_WIPHY])
  86                 rdev = cfg80211_rdev_by_wiphy_idx(
  87                                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY]));
  88
  89         if (info->attrs[NL80211_ATTR_IFINDEX]) {
  90                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
  91                 netdev = dev_get_by_index(netns, ifindex);
  92                 if (netdev) {
  93                         if (netdev->ieee80211_ptr)
  94                                 tmp = wiphy_to_dev(
  95                                                 netdev->ieee80211_ptr->wiphy);
  96                         else
  97                                 tmp = NULL;
  98
  99                         dev_put(netdev);
 100
 101                         /* not wireless device -- return error */
 102                         if (!tmp)
 103                                 return ERR_PTR(-EINVAL);
 104
 105                         /* mismatch -- return error */
 106                         if (rdev && tmp != rdev)
 107                                 return ERR_PTR(-EINVAL);
 108
 109                         rdev = tmp;
 110                 }
 111         }
 112
 113         if (!rdev)
 114                 return ERR_PTR(-ENODEV);
 115
 116         if (netns != wiphy_net(&rdev->wiphy))
 117                 return ERR_PTR(-ENODEV);
 118
 119         return rdev;
 120 }
 121
 122 /*
 123  * This function returns a pointer to the driver
 124  * that the genl_info item that is passed refers to.
 125  * If successful, it returns non-NULL and also locks
 126  * the driver's mutex!
 127  *
 128  * This means that you need to call cfg80211_unlock_rdev()
 129  * before being allowed to acquire &cfg80211_mutex!
 130  *
 131  * This is necessary because we need to lock the global
 132  * mutex to get an item off the list safely, and then
 133  * we lock the rdev mutex so it doesn't go away under us.
 134  *
 135  * We don't want to keep cfg80211_mutex locked
 136  * for all the time in order to allow requests on
 137  * other interfaces to go through at the same time.
 138  *
 139  * The result of this can be a PTR_ERR and hence must
 140  * be checked with IS_ERR() for errors.
 141  */
 142 static struct cfg80211_registered_device *
 143 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 144 {
 145         struct cfg80211_registered_device *rdev;
 146
 147         mutex_lock(&cfg80211_mutex);
 148         rdev = __cfg80211_rdev_from_info(netns, info);
 149
 150         /* if it is not an error we grab the lock on
 151          * it to assure it won't be going away while
 152          * we operate on it */
 153         if (!IS_ERR(rdev))
 154                 mutex_lock(&rdev->mtx);
 155
 156         mutex_unlock(&cfg80211_mutex);
 157
 158         return rdev;
 159 }
 160
 161 /* policy for the attributes */
 162 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 163         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 164         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 165                                       .len = 20-1 },
 166         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 167         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 168         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 169         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 170         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 171         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 172         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 173         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 174
 175         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 176         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 177         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 178
 179         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 180         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 181
 182         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 183         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 184                                     .len = WLAN_MAX_KEY_LEN },
 185         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 186         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 187         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 188         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 189         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 190
 191         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 192         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 193         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 194                                        .len = IEEE80211_MAX_DATA_LEN },
 195         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 196                                        .len = IEEE80211_MAX_DATA_LEN },
 197         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 198         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 199         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 200         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 201                                                .len = NL80211_MAX_SUPP_RATES },
 202         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 203         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 204         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 205         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 206                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 207         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 208
 209         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 210         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 211
 212         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 213         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 214         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 215         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 216                                            .len = NL80211_MAX_SUPP_RATES },
 217         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 218
 219         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 220         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 221
 222         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 223
 224         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 225         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 226                               .len = IEEE80211_MAX_DATA_LEN },
 227         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 228         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 229
 230         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 231                                 .len = IEEE80211_MAX_SSID_LEN },
 232         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 233         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 234         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 235         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 236         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 237         [NL80211_ATTR_STA_FLAGS2] = {
 238                 .len = sizeof(struct nl80211_sta_flag_update),
 239         },
 240         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 241         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 242         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 243         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 244         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 245         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 246         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 247         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 248         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 249                                  .len = WLAN_PMKID_LEN },
 250         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 251         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 252         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 253         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 254                                  .len = IEEE80211_MAX_DATA_LEN },
 255         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 256         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 257         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 258         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 259         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 261         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 262         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 263         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 264         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 265         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 266         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 267         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 268         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 269         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 270         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 271         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 272         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 273         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 274         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 275                                          .len = IEEE80211_MAX_DATA_LEN },
 276         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 277                                          .len = IEEE80211_MAX_DATA_LEN },
 278         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 279         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 280         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 281         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 282         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 283         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 284         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 285         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 286         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 287         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 288                                       .len = IEEE80211_MAX_DATA_LEN },
 289         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 290         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 292                 .len = NL80211_HT_CAPABILITY_LEN
 293         },
 294         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 295         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 296         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 297 };
 298
 299 /* policy for the key attributes */
 300 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 301         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 302         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 303         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 304         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 305         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 306         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 307         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 308         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 309 };
 310
 311 /* policy for the key default flags */
 312 static const struct nla_policy
 313 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 314         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 315         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 316 };
 317
 318 /* policy for WoWLAN attributes */
 319 static const struct nla_policy
 320 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 321         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 322         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 323         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 324         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 325         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 326         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 327         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 328         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 329 };
 330
 331 /* policy for GTK rekey offload attributes */
 332 static const struct nla_policy
 333 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 334         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 335         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 336         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 337 };
 338
 339 static const struct nla_policy
 340 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 341         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 342                                                  .len = IEEE80211_MAX_SSID_LEN },
 343 };
 344
 345 /* ifidx get helper */
 346 static int nl80211_get_ifidx(struct netlink_callback *cb)
 347 {
 348         int res;
 349
 350         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 351                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
 352                           nl80211_policy);
 353         if (res)
 354                 return res;
 355
 356         if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
 357                 return -EINVAL;
 358
 359         res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
 360         if (!res)
 361                 return -EINVAL;
 362         return res;
 363 }
 364
 365 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
 366                                        struct netlink_callback *cb,
 367                                        struct cfg80211_registered_device **rdev,
 368                                        struct net_device **dev)
 369 {
 370         int ifidx = cb->args[0];
 371         int err;
 372
 373         if (!ifidx)
 374                 ifidx = nl80211_get_ifidx(cb);
 375         if (ifidx < 0)
 376                 return ifidx;
 377
 378         cb->args[0] = ifidx;
 379
 380         rtnl_lock();
 381
 382         *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
 383         if (!*dev) {
 384                 err = -ENODEV;
 385                 goto out_rtnl;
 386         }
 387
 388         *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
 389         if (IS_ERR(*rdev)) {
 390                 err = PTR_ERR(*rdev);
 391                 goto out_rtnl;
 392         }
 393
 394         return 0;
 395  out_rtnl:
 396         rtnl_unlock();
 397         return err;
 398 }
 399
 400 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
 401 {
 402         cfg80211_unlock_rdev(rdev);
 403         rtnl_unlock();
 404 }
 405
 406 /* IE validation */
 407 static bool is_valid_ie_attr(const struct nlattr *attr)
 408 {
 409         const u8 *pos;
 410         int len;
 411
 412         if (!attr)
 413                 return true;
 414
 415         pos = nla_data(attr);
 416         len = nla_len(attr);
 417
 418         while (len) {
 419                 u8 elemlen;
 420
 421                 if (len < 2)
 422                         return false;
 423                 len -= 2;
 424
 425                 elemlen = pos[1];
 426                 if (elemlen > len)
 427                         return false;
 428
 429                 len -= elemlen;
 430                 pos += 2 + elemlen;
 431         }
 432
 433         return true;
 434 }
 435
 436 /* message building helper */
 437 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
 438                                    int flags, u8 cmd)
 439 {
 440         /* since there is no private header just add the generic one */
 441         return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
 442 }
 443
 444 static int nl80211_msg_put_channel(struct sk_buff *msg,
 445                                    struct ieee80211_channel *chan)
 446 {
 447         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 448                         chan->center_freq))
 449                 goto nla_put_failure;
 450
 451         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 452             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 453                 goto nla_put_failure;
 454         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 455             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 456                 goto nla_put_failure;
 457         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 458             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 459                 goto nla_put_failure;
 460         if ((chan->flags & IEEE80211_CHAN_RADAR) &&
 461             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 462                 goto nla_put_failure;
 463
 464         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 465                         DBM_TO_MBM(chan->max_power)))
 466                 goto nla_put_failure;
 467
 468         return 0;
 469
 470  nla_put_failure:
 471         return -ENOBUFS;
 472 }
 473
 474 /* netlink command implementations */
 475
 476 struct key_parse {
 477         struct key_params p;
 478         int idx;
 479         int type;
 480         bool def, defmgmt;
 481         bool def_uni, def_multi;
 482 };
 483
 484 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 485 {
 486         struct nlattr *tb[NL80211_KEY_MAX + 1];
 487         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 488                                    nl80211_key_policy);
 489         if (err)
 490                 return err;
 491
 492         k->def = !!tb[NL80211_KEY_DEFAULT];
 493         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 494
 495         if (k->def) {
 496                 k->def_uni = true;
 497                 k->def_multi = true;
 498         }
 499         if (k->defmgmt)
 500                 k->def_multi = true;
 501
 502         if (tb[NL80211_KEY_IDX])
 503                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 504
 505         if (tb[NL80211_KEY_DATA]) {
 506                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 507                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 508         }
 509
 510         if (tb[NL80211_KEY_SEQ]) {
 511                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 512                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 513         }
 514
 515         if (tb[NL80211_KEY_CIPHER])
 516                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 517
 518         if (tb[NL80211_KEY_TYPE]) {
 519                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 520                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 521                         return -EINVAL;
 522         }
 523
 524         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 525                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 526                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 527                                        tb[NL80211_KEY_DEFAULT_TYPES],
 528                                        nl80211_key_default_policy);
 529                 if (err)
 530                         return err;
 531
 532                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 533                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 534         }
 535
 536         return 0;
 537 }
 538
 539 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 540 {
 541         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 542                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 543                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 544         }
 545
 546         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 547                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 548                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 549         }
 550
 551         if (info->attrs[NL80211_ATTR_KEY_IDX])
 552                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 553
 554         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 555                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 556
 557         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 558         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 559
 560         if (k->def) {
 561                 k->def_uni = true;
 562                 k->def_multi = true;
 563         }
 564         if (k->defmgmt)
 565                 k->def_multi = true;
 566
 567         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 568                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 569                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 570                         return -EINVAL;
 571         }
 572
 573         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 574                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 575                 int err = nla_parse_nested(
 576                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 577                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 578                                 nl80211_key_default_policy);
 579                 if (err)
 580                         return err;
 581
 582                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 583                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 584         }
 585
 586         return 0;
 587 }
 588
 589 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 590 {
 591         int err;
 592
 593         memset(k, 0, sizeof(*k));
 594         k->idx = -1;
 595         k->type = -1;
 596
 597         if (info->attrs[NL80211_ATTR_KEY])
 598                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 599         else
 600                 err = nl80211_parse_key_old(info, k);
 601
 602         if (err)
 603                 return err;
 604
 605         if (k->def && k->defmgmt)
 606                 return -EINVAL;
 607
 608         if (k->defmgmt) {
 609                 if (k->def_uni || !k->def_multi)
 610                         return -EINVAL;
 611         }
 612
 613         if (k->idx != -1) {
 614                 if (k->defmgmt) {
 615                         if (k->idx < 4 || k->idx > 5)
 616                                 return -EINVAL;
 617                 } else if (k->def) {
 618                         if (k->idx < 0 || k->idx > 3)
 619                                 return -EINVAL;
 620                 } else {
 621                         if (k->idx < 0 || k->idx > 5)
 622                                 return -EINVAL;
 623                 }
 624         }
 625
 626         return 0;
 627 }
 628
 629 static struct cfg80211_cached_keys *
 630 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 631                        struct nlattr *keys)
 632 {
 633         struct key_parse parse;
 634         struct nlattr *key;
 635         struct cfg80211_cached_keys *result;
 636         int rem, err, def = 0;
 637
 638         result = kzalloc(sizeof(*result), GFP_KERNEL);
 639         if (!result)
 640                 return ERR_PTR(-ENOMEM);
 641
 642         result->def = -1;
 643         result->defmgmt = -1;
 644
 645         nla_for_each_nested(key, keys, rem) {
 646                 memset(&parse, 0, sizeof(parse));
 647                 parse.idx = -1;
 648
 649                 err = nl80211_parse_key_new(key, &parse);
 650                 if (err)
 651                         goto error;
 652                 err = -EINVAL;
 653                 if (!parse.p.key)
 654                         goto error;
 655                 if (parse.idx < 0 || parse.idx > 4)
 656                         goto error;
 657                 if (parse.def) {
 658                         if (def)
 659                                 goto error;
 660                         def = 1;
 661                         result->def = parse.idx;
 662                         if (!parse.def_uni || !parse.def_multi)
 663                                 goto error;
 664                 } else if (parse.defmgmt)
 665                         goto error;
 666                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 667                                                      parse.idx, false, NULL);
 668                 if (err)
 669                         goto error;
 670                 result->params[parse.idx].cipher = parse.p.cipher;
 671                 result->params[parse.idx].key_len = parse.p.key_len;
 672                 result->params[parse.idx].key = result->data[parse.idx];
 673                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 674         }
 675
 676         return result;
 677  error:
 678         kfree(result);
 679         return ERR_PTR(err);
 680 }
 681
 682 static int nl80211_key_allowed(struct wireless_dev *wdev)
 683 {
 684         ASSERT_WDEV_LOCK(wdev);
 685
 686         switch (wdev->iftype) {
 687         case NL80211_IFTYPE_AP:
 688         case NL80211_IFTYPE_AP_VLAN:
 689         case NL80211_IFTYPE_P2P_GO:
 690         case NL80211_IFTYPE_MESH_POINT:
 691                 break;
 692         case NL80211_IFTYPE_ADHOC:
 693                 if (!wdev->current_bss)
 694                         return -ENOLINK;
 695                 break;
 696         case NL80211_IFTYPE_STATION:
 697         case NL80211_IFTYPE_P2P_CLIENT:
 698                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
 699                         return -ENOLINK;
 700                 break;
 701         default:
 702                 return -EINVAL;
 703         }
 704
 705         return 0;
 706 }
 707
 708 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 709 {
 710         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 711         int i;
 712
 713         if (!nl_modes)
 714                 goto nla_put_failure;
 715
 716         i = 0;
 717         while (ifmodes) {
 718                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 719                         goto nla_put_failure;
 720                 ifmodes >>= 1;
 721                 i++;
 722         }
 723
 724         nla_nest_end(msg, nl_modes);
 725         return 0;
 726
 727 nla_put_failure:
 728         return -ENOBUFS;
 729 }
 730
 731 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 732                                           struct sk_buff *msg)
 733 {
 734         struct nlattr *nl_combis;
 735         int i, j;
 736
 737         nl_combis = nla_nest_start(msg,
 738                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 739         if (!nl_combis)
 740                 goto nla_put_failure;
 741
 742         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 743                 const struct ieee80211_iface_combination *c;
 744                 struct nlattr *nl_combi, *nl_limits;
 745
 746                 c = &wiphy->iface_combinations[i];
 747
 748                 nl_combi = nla_nest_start(msg, i + 1);
 749                 if (!nl_combi)
 750                         goto nla_put_failure;
 751
 752                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 753                 if (!nl_limits)
 754                         goto nla_put_failure;
 755
 756                 for (j = 0; j < c->n_limits; j++) {
 757                         struct nlattr *nl_limit;
 758
 759                         nl_limit = nla_nest_start(msg, j + 1);
 760                         if (!nl_limit)
 761                                 goto nla_put_failure;
 762                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 763                                         c->limits[j].max))
 764                                 goto nla_put_failure;
 765                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 766                                                 c->limits[j].types))
 767                                 goto nla_put_failure;
 768                         nla_nest_end(msg, nl_limit);
 769                 }
 770
 771                 nla_nest_end(msg, nl_limits);
 772
 773                 if (c->beacon_int_infra_match &&
 774                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 775                         goto nla_put_failure;
 776                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 777                                 c->num_different_channels) ||
 778                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 779                                 c->max_interfaces))
 780                         goto nla_put_failure;
 781
 782                 nla_nest_end(msg, nl_combi);
 783         }
 784
 785         nla_nest_end(msg, nl_combis);
 786
 787         return 0;
 788 nla_put_failure:
 789         return -ENOBUFS;
 790 }
 791
 792 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 793                               struct cfg80211_registered_device *dev)
 794 {
 795         void *hdr;
 796         struct nlattr *nl_bands, *nl_band;
 797         struct nlattr *nl_freqs, *nl_freq;
 798         struct nlattr *nl_rates, *nl_rate;
 799         struct nlattr *nl_cmds;
 800         enum ieee80211_band band;
 801         struct ieee80211_channel *chan;
 802         struct ieee80211_rate *rate;
 803         int i;
 804         const struct ieee80211_txrx_stypes *mgmt_stypes =
 805                                 dev->wiphy.mgmt_stypes;
 806
 807         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
 808         if (!hdr)
 809                 return -1;
 810
 811         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
 812             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
 813             nla_put_u32(msg, NL80211_ATTR_GENERATION,
 814                         cfg80211_rdev_list_generation) ||
 815             nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
 816                        dev->wiphy.retry_short) ||
 817             nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
 818                        dev->wiphy.retry_long) ||
 819             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
 820                         dev->wiphy.frag_threshold) ||
 821             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
 822                         dev->wiphy.rts_threshold) ||
 823             nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
 824                        dev->wiphy.coverage_class) ||
 825             nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
 826                        dev->wiphy.max_scan_ssids) ||
 827             nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
 828                        dev->wiphy.max_sched_scan_ssids) ||
 829             nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
 830                         dev->wiphy.max_scan_ie_len) ||
 831             nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
 832                         dev->wiphy.max_sched_scan_ie_len) ||
 833             nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
 834                        dev->wiphy.max_match_sets))
 835                 goto nla_put_failure;
 836
 837         if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
 838             nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
 839                 goto nla_put_failure;
 840         if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
 841             nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
 842                 goto nla_put_failure;
 843         if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
 844             nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
 845                 goto nla_put_failure;
 846         if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
 847             nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
 848                 goto nla_put_failure;
 849         if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
 850             nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
 851                 goto nla_put_failure;
 852         if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
 853             nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
 854                 goto nla_put_failure;
 855
 856         if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
 857                     sizeof(u32) * dev->wiphy.n_cipher_suites,
 858                     dev->wiphy.cipher_suites))
 859                 goto nla_put_failure;
 860
 861         if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
 862                        dev->wiphy.max_num_pmkids))
 863                 goto nla_put_failure;
 864
 865         if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
 866             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
 867                 goto nla_put_failure;
 868
 869         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
 870                         dev->wiphy.available_antennas_tx) ||
 871             nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
 872                         dev->wiphy.available_antennas_rx))
 873                 goto nla_put_failure;
 874
 875         if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
 876             nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
 877                         dev->wiphy.probe_resp_offload))
 878                 goto nla_put_failure;
 879
 880         if ((dev->wiphy.available_antennas_tx ||
 881              dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
 882                 u32 tx_ant = 0, rx_ant = 0;
 883                 int res;
 884                 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
 885                 if (!res) {
 886                         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
 887                                         tx_ant) ||
 888                             nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
 889                                         rx_ant))
 890                                 goto nla_put_failure;
 891                 }
 892         }
 893
 894         if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
 895                                 dev->wiphy.interface_modes))
 896                 goto nla_put_failure;
 897
 898         nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
 899         if (!nl_bands)
 900                 goto nla_put_failure;
 901
 902         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 903                 if (!dev->wiphy.bands[band])
 904                         continue;
 905
 906                 nl_band = nla_nest_start(msg, band);
 907                 if (!nl_band)
 908                         goto nla_put_failure;
 909
 910                 /* add HT info */
 911                 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
 912                     (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
 913                              sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
 914                              &dev->wiphy.bands[band]->ht_cap.mcs) ||
 915                      nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
 916                                  dev->wiphy.bands[band]->ht_cap.cap) ||
 917                      nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
 918                                 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
 919                      nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
 920                                 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
 921                         goto nla_put_failure;
 922
 923                 /* add frequencies */
 924                 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
 925                 if (!nl_freqs)
 926                         goto nla_put_failure;
 927
 928                 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
 929                         nl_freq = nla_nest_start(msg, i);
 930                         if (!nl_freq)
 931                                 goto nla_put_failure;
 932
 933                         chan = &dev->wiphy.bands[band]->channels[i];
 934
 935                         if (nl80211_msg_put_channel(msg, chan))
 936                                 goto nla_put_failure;
 937
 938                         nla_nest_end(msg, nl_freq);
 939                 }
 940
 941                 nla_nest_end(msg, nl_freqs);
 942
 943                 /* add bitrates */
 944                 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
 945                 if (!nl_rates)
 946                         goto nla_put_failure;
 947
 948                 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
 949                         nl_rate = nla_nest_start(msg, i);
 950                         if (!nl_rate)
 951                                 goto nla_put_failure;
 952
 953                         rate = &dev->wiphy.bands[band]->bitrates[i];
 954                         if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
 955                                         rate->bitrate))
 956                                 goto nla_put_failure;
 957                         if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
 958                             nla_put_flag(msg,
 959                                          NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
 960                                 goto nla_put_failure;
 961
 962                         nla_nest_end(msg, nl_rate);
 963                 }
 964
 965                 nla_nest_end(msg, nl_rates);
 966
 967                 nla_nest_end(msg, nl_band);
 968         }
 969         nla_nest_end(msg, nl_bands);
 970
 971         nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
 972         if (!nl_cmds)
 973                 goto nla_put_failure;
 974
 975         i = 0;
 976 #define CMD(op, n)                                              \
 977          do {                                                   \
 978                 if (dev->ops->op) {                             \
 979                         i++;                                    \
 980                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
 981                                 goto nla_put_failure;           \
 982                 }                                               \
 983         } while (0)
 984
 985         CMD(add_virtual_intf, NEW_INTERFACE);
 986         CMD(change_virtual_intf, SET_INTERFACE);
 987         CMD(add_key, NEW_KEY);
 988         CMD(start_ap, START_AP);
 989         CMD(add_station, NEW_STATION);
 990         CMD(add_mpath, NEW_MPATH);
 991         CMD(update_mesh_config, SET_MESH_CONFIG);
 992         CMD(change_bss, SET_BSS);
 993         CMD(auth, AUTHENTICATE);
 994         CMD(assoc, ASSOCIATE);
 995         CMD(deauth, DEAUTHENTICATE);
 996         CMD(disassoc, DISASSOCIATE);
 997         CMD(join_ibss, JOIN_IBSS);
 998         CMD(join_mesh, JOIN_MESH);
 999         CMD(set_pmksa, SET_PMKSA);
1000         CMD(del_pmksa, DEL_PMKSA);
1001         CMD(flush_pmksa, FLUSH_PMKSA);
1002         if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1003                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1004         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1005         CMD(mgmt_tx, FRAME);
1006         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1007         if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1008                 i++;
1009                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1010                         goto nla_put_failure;
1011         }
1012         if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1013             dev->ops->join_mesh) {
1014                 i++;
1015                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1016                         goto nla_put_failure;
1017         }
1018         CMD(set_wds_peer, SET_WDS_PEER);
1019         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1020                 CMD(tdls_mgmt, TDLS_MGMT);
1021                 CMD(tdls_oper, TDLS_OPER);
1022         }
1023         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1024                 CMD(sched_scan_start, START_SCHED_SCAN);
1025         CMD(probe_client, PROBE_CLIENT);
1026         CMD(set_noack_map, SET_NOACK_MAP);
1027         if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1028                 i++;
1029                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1030                         goto nla_put_failure;
1031         }
1032
1033 #ifdef CONFIG_NL80211_TESTMODE
1034         CMD(testmode_cmd, TESTMODE);
1035 #endif
1036
1037 #undef CMD
1038
1039         if (dev->ops->connect || dev->ops->auth) {
1040                 i++;
1041                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1042                         goto nla_put_failure;
1043         }
1044
1045         if (dev->ops->disconnect || dev->ops->deauth) {
1046                 i++;
1047                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1048                         goto nla_put_failure;
1049         }
1050
1051         nla_nest_end(msg, nl_cmds);
1052
1053         if (dev->ops->remain_on_channel &&
1054             (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1055             nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1056                         dev->wiphy.max_remain_on_channel_duration))
1057                 goto nla_put_failure;
1058
1059         if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1060             nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1061                 goto nla_put_failure;
1062
1063         if (mgmt_stypes) {
1064                 u16 stypes;
1065                 struct nlattr *nl_ftypes, *nl_ifs;
1066                 enum nl80211_iftype ift;
1067
1068                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1069                 if (!nl_ifs)
1070                         goto nla_put_failure;
1071
1072                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1073                         nl_ftypes = nla_nest_start(msg, ift);
1074                         if (!nl_ftypes)
1075                                 goto nla_put_failure;
1076                         i = 0;
1077                         stypes = mgmt_stypes[ift].tx;
1078                         while (stypes) {
1079                                 if ((stypes & 1) &&
1080                                     nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1081                                                 (i << 4) | IEEE80211_FTYPE_MGMT))
1082                                         goto nla_put_failure;
1083                                 stypes >>= 1;
1084                                 i++;
1085                         }
1086                         nla_nest_end(msg, nl_ftypes);
1087                 }
1088
1089                 nla_nest_end(msg, nl_ifs);
1090
1091                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1092                 if (!nl_ifs)
1093                         goto nla_put_failure;
1094
1095                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1096                         nl_ftypes = nla_nest_start(msg, ift);
1097                         if (!nl_ftypes)
1098                                 goto nla_put_failure;
1099                         i = 0;
1100                         stypes = mgmt_stypes[ift].rx;
1101                         while (stypes) {
1102                                 if ((stypes & 1) &&
1103                                     nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1104                                                 (i << 4) | IEEE80211_FTYPE_MGMT))
1105                                         goto nla_put_failure;
1106                                 stypes >>= 1;
1107                                 i++;
1108                         }
1109                         nla_nest_end(msg, nl_ftypes);
1110                 }
1111                 nla_nest_end(msg, nl_ifs);
1112         }
1113
1114         if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1115                 struct nlattr *nl_wowlan;
1116
1117                 nl_wowlan = nla_nest_start(msg,
1118                                 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1119                 if (!nl_wowlan)
1120                         goto nla_put_failure;
1121
1122                 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1123                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1124                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1125                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1126                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1127                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1128                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1129                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1130                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1131                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1132                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1133                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1134                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1135                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1136                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1137                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1138                     goto nla_put_failure;
1139                 if (dev->wiphy.wowlan.n_patterns) {
1140                         struct nl80211_wowlan_pattern_support pat = {
1141                                 .max_patterns = dev->wiphy.wowlan.n_patterns,
1142                                 .min_pattern_len =
1143                                         dev->wiphy.wowlan.pattern_min_len,
1144                                 .max_pattern_len =
1145                                         dev->wiphy.wowlan.pattern_max_len,
1146                         };
1147                         if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1148                                     sizeof(pat), &pat))
1149                                 goto nla_put_failure;
1150                 }
1151
1152                 nla_nest_end(msg, nl_wowlan);
1153         }
1154
1155         if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1156                                 dev->wiphy.software_iftypes))
1157                 goto nla_put_failure;
1158
1159         if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1160                 goto nla_put_failure;
1161
1162         if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1163             nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1164                         dev->wiphy.ap_sme_capa))
1165                 goto nla_put_failure;
1166
1167         if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1168                         dev->wiphy.features))
1169                 goto nla_put_failure;
1170
1171         if (dev->wiphy.ht_capa_mod_mask &&
1172             nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1173                     sizeof(*dev->wiphy.ht_capa_mod_mask),
1174                     dev->wiphy.ht_capa_mod_mask))
1175                 goto nla_put_failure;
1176
1177         return genlmsg_end(msg, hdr);
1178
1179  nla_put_failure:
1180         genlmsg_cancel(msg, hdr);
1181         return -EMSGSIZE;
1182 }
1183
1184 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1185 {
1186         int idx = 0;
1187         int start = cb->args[0];
1188         struct cfg80211_registered_device *dev;
1189
1190         mutex_lock(&cfg80211_mutex);
1191         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1192                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1193                         continue;
1194                 if (++idx <= start)
1195                         continue;
1196                 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1197                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
1198                                        dev) < 0) {
1199                         idx--;
1200                         break;
1201                 }
1202         }
1203         mutex_unlock(&cfg80211_mutex);
1204
1205         cb->args[0] = idx;
1206
1207         return skb->len;
1208 }
1209
1210 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1211 {
1212         struct sk_buff *msg;
1213         struct cfg80211_registered_device *dev = info->user_ptr[0];
1214
1215         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1216         if (!msg)
1217                 return -ENOMEM;
1218
1219         if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1220                 nlmsg_free(msg);
1221                 return -ENOBUFS;
1222         }
1223
1224         return genlmsg_reply(msg, info);
1225 }
1226
1227 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1228         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1229         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1230         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1231         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1232         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1233 };
1234
1235 static int parse_txq_params(struct nlattr *tb[],
1236                             struct ieee80211_txq_params *txq_params)
1237 {
1238         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1239             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1240             !tb[NL80211_TXQ_ATTR_AIFS])
1241                 return -EINVAL;
1242
1243         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1244         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1245         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1246         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1247         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1248
1249         if (txq_params->ac >= NL80211_NUM_ACS)
1250                 return -EINVAL;
1251
1252         return 0;
1253 }
1254
1255 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1256 {
1257         /*
1258          * You can only set the channel explicitly for WDS interfaces,
1259          * all others have their channel managed via their respective
1260          * "establish a connection" command (connect, join, ...)
1261          *
1262          * For AP/GO and mesh mode, the channel can be set with the
1263          * channel userspace API, but is only stored and passed to the
1264          * low-level driver when the AP starts or the mesh is joined.
1265          * This is for backward compatibility, userspace can also give
1266          * the channel in the start-ap or join-mesh commands instead.
1267          *
1268          * Monitors are special as they are normally slaved to
1269          * whatever else is going on, so they have their own special
1270          * operation to set the monitor channel if possible.
1271          */
1272         return !wdev ||
1273                 wdev->iftype == NL80211_IFTYPE_AP ||
1274                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1275                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1276                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1277 }
1278
1279 static bool nl80211_valid_channel_type(struct genl_info *info,
1280                                        enum nl80211_channel_type *channel_type)
1281 {
1282         enum nl80211_channel_type tmp;
1283
1284         if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1285                 return false;
1286
1287         tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1288         if (tmp != NL80211_CHAN_NO_HT &&
1289             tmp != NL80211_CHAN_HT20 &&
1290             tmp != NL80211_CHAN_HT40PLUS &&
1291             tmp != NL80211_CHAN_HT40MINUS)
1292                 return false;
1293
1294         if (channel_type)
1295                 *channel_type = tmp;
1296
1297         return true;
1298 }
1299
1300 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1301                                  struct wireless_dev *wdev,
1302                                  struct genl_info *info)
1303 {
1304         struct ieee80211_channel *channel;
1305         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1306         u32 freq;
1307         int result;
1308         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1309
1310         if (wdev)
1311                 iftype = wdev->iftype;
1312
1313         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1314                 return -EINVAL;
1315
1316         if (!nl80211_can_set_dev_channel(wdev))
1317                 return -EOPNOTSUPP;
1318
1319         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
1320             !nl80211_valid_channel_type(info, &channel_type))
1321                 return -EINVAL;
1322
1323         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1324
1325         mutex_lock(&rdev->devlist_mtx);
1326         switch (iftype) {
1327         case NL80211_IFTYPE_AP:
1328         case NL80211_IFTYPE_P2P_GO:
1329                 if (wdev->beacon_interval) {
1330                         result = -EBUSY;
1331                         break;
1332                 }
1333                 channel = rdev_freq_to_chan(rdev, freq, channel_type);
1334                 if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
1335                                                               channel,
1336                                                               channel_type)) {
1337                         result = -EINVAL;
1338                         break;
1339                 }
1340                 wdev->preset_chan = channel;
1341                 wdev->preset_chantype = channel_type;
1342                 result = 0;
1343                 break;
1344         case NL80211_IFTYPE_MESH_POINT:
1345                 result = cfg80211_set_mesh_freq(rdev, wdev, freq, channel_type);
1346                 break;
1347         case NL80211_IFTYPE_MONITOR:
1348                 result = cfg80211_set_monitor_channel(rdev, freq, channel_type);
1349                 break;
1350         default:
1351                 result = -EINVAL;
1352         }
1353         mutex_unlock(&rdev->devlist_mtx);
1354
1355         return result;
1356 }
1357
1358 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1359 {
1360         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1361         struct net_device *netdev = info->user_ptr[1];
1362
1363         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1364 }
1365
1366 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1367 {
1368         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1369         struct net_device *dev = info->user_ptr[1];
1370         struct wireless_dev *wdev = dev->ieee80211_ptr;
1371         const u8 *bssid;
1372
1373         if (!info->attrs[NL80211_ATTR_MAC])
1374                 return -EINVAL;
1375
1376         if (netif_running(dev))
1377                 return -EBUSY;
1378
1379         if (!rdev->ops->set_wds_peer)
1380                 return -EOPNOTSUPP;
1381
1382         if (wdev->iftype != NL80211_IFTYPE_WDS)
1383                 return -EOPNOTSUPP;
1384
1385         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1386         return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1387 }
1388
1389
1390 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1391 {
1392         struct cfg80211_registered_device *rdev;
1393         struct net_device *netdev = NULL;
1394         struct wireless_dev *wdev;
1395         int result = 0, rem_txq_params = 0;
1396         struct nlattr *nl_txq_params;
1397         u32 changed;
1398         u8 retry_short = 0, retry_long = 0;
1399         u32 frag_threshold = 0, rts_threshold = 0;
1400         u8 coverage_class = 0;
1401
1402         /*
1403          * Try to find the wiphy and netdev. Normally this
1404          * function shouldn't need the netdev, but this is
1405          * done for backward compatibility -- previously
1406          * setting the channel was done per wiphy, but now
1407          * it is per netdev. Previous userland like hostapd
1408          * also passed a netdev to set_wiphy, so that it is
1409          * possible to let that go to the right netdev!
1410          */
1411         mutex_lock(&cfg80211_mutex);
1412
1413         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1414                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1415
1416                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1417                 if (netdev && netdev->ieee80211_ptr) {
1418                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1419                         mutex_lock(&rdev->mtx);
1420                 } else
1421                         netdev = NULL;
1422         }
1423
1424         if (!netdev) {
1425                 rdev = __cfg80211_rdev_from_info(genl_info_net(info), info);
1426                 if (IS_ERR(rdev)) {
1427                         mutex_unlock(&cfg80211_mutex);
1428                         return PTR_ERR(rdev);
1429                 }
1430                 wdev = NULL;
1431                 netdev = NULL;
1432                 result = 0;
1433
1434                 mutex_lock(&rdev->mtx);
1435         } else if (nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1436                 wdev = netdev->ieee80211_ptr;
1437         else
1438                 wdev = NULL;
1439
1440         /*
1441          * end workaround code, by now the rdev is available
1442          * and locked, and wdev may or may not be NULL.
1443          */
1444
1445         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1446                 result = cfg80211_dev_rename(
1447                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1448
1449         mutex_unlock(&cfg80211_mutex);
1450
1451         if (result)
1452                 goto bad_res;
1453
1454         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1455                 struct ieee80211_txq_params txq_params;
1456                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1457
1458                 if (!rdev->ops->set_txq_params) {
1459                         result = -EOPNOTSUPP;
1460                         goto bad_res;
1461                 }
1462
1463                 if (!netdev) {
1464                         result = -EINVAL;
1465                         goto bad_res;
1466                 }
1467
1468                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1469                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1470                         result = -EINVAL;
1471                         goto bad_res;
1472                 }
1473
1474                 if (!netif_running(netdev)) {
1475                         result = -ENETDOWN;
1476                         goto bad_res;
1477                 }
1478
1479                 nla_for_each_nested(nl_txq_params,
1480                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1481                                     rem_txq_params) {
1482                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1483                                   nla_data(nl_txq_params),
1484                                   nla_len(nl_txq_params),
1485                                   txq_params_policy);
1486                         result = parse_txq_params(tb, &txq_params);
1487                         if (result)
1488                                 goto bad_res;
1489
1490                         result = rdev->ops->set_txq_params(&rdev->wiphy,
1491                                                            netdev,
1492                                                            &txq_params);
1493                         if (result)
1494                                 goto bad_res;
1495                 }
1496         }
1497
1498         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1499                 result = __nl80211_set_channel(rdev, wdev, info);
1500                 if (result)
1501                         goto bad_res;
1502         }
1503
1504         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1505                 enum nl80211_tx_power_setting type;
1506                 int idx, mbm = 0;
1507
1508                 if (!rdev->ops->set_tx_power) {
1509                         result = -EOPNOTSUPP;
1510                         goto bad_res;
1511                 }
1512
1513                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1514                 type = nla_get_u32(info->attrs[idx]);
1515
1516                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1517                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1518                         result = -EINVAL;
1519                         goto bad_res;
1520                 }
1521
1522                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1523                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1524                         mbm = nla_get_u32(info->attrs[idx]);
1525                 }
1526
1527                 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1528                 if (result)
1529                         goto bad_res;
1530         }
1531
1532         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1533             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1534                 u32 tx_ant, rx_ant;
1535                 if ((!rdev->wiphy.available_antennas_tx &&
1536                      !rdev->wiphy.available_antennas_rx) ||
1537                     !rdev->ops->set_antenna) {
1538                         result = -EOPNOTSUPP;
1539                         goto bad_res;
1540                 }
1541
1542                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1543                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1544
1545                 /* reject antenna configurations which don't match the
1546                  * available antenna masks, except for the "all" mask */
1547                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1548                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1549                         result = -EINVAL;
1550                         goto bad_res;
1551                 }
1552
1553                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1554                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1555
1556                 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1557                 if (result)
1558                         goto bad_res;
1559         }
1560
1561         changed = 0;
1562
1563         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1564                 retry_short = nla_get_u8(
1565                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1566                 if (retry_short == 0) {
1567                         result = -EINVAL;
1568                         goto bad_res;
1569                 }
1570                 changed |= WIPHY_PARAM_RETRY_SHORT;
1571         }
1572
1573         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1574                 retry_long = nla_get_u8(
1575                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1576                 if (retry_long == 0) {
1577                         result = -EINVAL;
1578                         goto bad_res;
1579                 }
1580                 changed |= WIPHY_PARAM_RETRY_LONG;
1581         }
1582
1583         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1584                 frag_threshold = nla_get_u32(
1585                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1586                 if (frag_threshold < 256) {
1587                         result = -EINVAL;
1588                         goto bad_res;
1589                 }
1590                 if (frag_threshold != (u32) -1) {
1591                         /*
1592                          * Fragments (apart from the last one) are required to
1593                          * have even length. Make the fragmentation code
1594                          * simpler by stripping LSB should someone try to use
1595                          * odd threshold value.
1596                          */
1597                         frag_threshold &= ~0x1;
1598                 }
1599                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1600         }
1601
1602         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1603                 rts_threshold = nla_get_u32(
1604                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1605                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1606         }
1607
1608         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1609                 coverage_class = nla_get_u8(
1610                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1611                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1612         }
1613
1614         if (changed) {
1615                 u8 old_retry_short, old_retry_long;
1616                 u32 old_frag_threshold, old_rts_threshold;
1617                 u8 old_coverage_class;
1618
1619                 if (!rdev->ops->set_wiphy_params) {
1620                         result = -EOPNOTSUPP;
1621                         goto bad_res;
1622                 }
1623
1624                 old_retry_short = rdev->wiphy.retry_short;
1625                 old_retry_long = rdev->wiphy.retry_long;
1626                 old_frag_threshold = rdev->wiphy.frag_threshold;
1627                 old_rts_threshold = rdev->wiphy.rts_threshold;
1628                 old_coverage_class = rdev->wiphy.coverage_class;
1629
1630                 if (changed & WIPHY_PARAM_RETRY_SHORT)
1631                         rdev->wiphy.retry_short = retry_short;
1632                 if (changed & WIPHY_PARAM_RETRY_LONG)
1633                         rdev->wiphy.retry_long = retry_long;
1634                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1635                         rdev->wiphy.frag_threshold = frag_threshold;
1636                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1637                         rdev->wiphy.rts_threshold = rts_threshold;
1638                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1639                         rdev->wiphy.coverage_class = coverage_class;
1640
1641                 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1642                 if (result) {
1643                         rdev->wiphy.retry_short = old_retry_short;
1644                         rdev->wiphy.retry_long = old_retry_long;
1645                         rdev->wiphy.frag_threshold = old_frag_threshold;
1646                         rdev->wiphy.rts_threshold = old_rts_threshold;
1647                         rdev->wiphy.coverage_class = old_coverage_class;
1648                 }
1649         }
1650
1651  bad_res:
1652         mutex_unlock(&rdev->mtx);
1653         if (netdev)
1654                 dev_put(netdev);
1655         return result;
1656 }
1657
1658
1659 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1660                               struct cfg80211_registered_device *rdev,
1661                               struct net_device *dev)
1662 {
1663         void *hdr;
1664
1665         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1666         if (!hdr)
1667                 return -1;
1668
1669         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1670             nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1671             nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name) ||
1672             nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1673                         dev->ieee80211_ptr->iftype) ||
1674             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1675                         rdev->devlist_generation ^
1676                         (cfg80211_rdev_list_generation << 2)))
1677                 goto nla_put_failure;
1678
1679         if (rdev->ops->get_channel) {
1680                 struct ieee80211_channel *chan;
1681                 enum nl80211_channel_type channel_type;
1682
1683                 chan = rdev->ops->get_channel(&rdev->wiphy, &channel_type);
1684                 if (chan &&
1685                     (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1686                                     chan->center_freq) ||
1687                      nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1688                                     channel_type)))
1689                         goto nla_put_failure;
1690         }
1691
1692         return genlmsg_end(msg, hdr);
1693
1694  nla_put_failure:
1695         genlmsg_cancel(msg, hdr);
1696         return -EMSGSIZE;
1697 }
1698
1699 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1700 {
1701         int wp_idx = 0;
1702         int if_idx = 0;
1703         int wp_start = cb->args[0];
1704         int if_start = cb->args[1];
1705         struct cfg80211_registered_device *rdev;
1706         struct wireless_dev *wdev;
1707
1708         mutex_lock(&cfg80211_mutex);
1709         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1710                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1711                         continue;
1712                 if (wp_idx < wp_start) {
1713                         wp_idx++;
1714                         continue;
1715                 }
1716                 if_idx = 0;
1717
1718                 mutex_lock(&rdev->devlist_mtx);
1719                 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1720                         if (if_idx < if_start) {
1721                                 if_idx++;
1722                                 continue;
1723                         }
1724                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1725                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
1726                                                rdev, wdev->netdev) < 0) {
1727                                 mutex_unlock(&rdev->devlist_mtx);
1728                                 goto out;
1729                         }
1730                         if_idx++;
1731                 }
1732                 mutex_unlock(&rdev->devlist_mtx);
1733
1734                 wp_idx++;
1735         }
1736  out:
1737         mutex_unlock(&cfg80211_mutex);
1738
1739         cb->args[0] = wp_idx;
1740         cb->args[1] = if_idx;
1741
1742         return skb->len;
1743 }
1744
1745 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1746 {
1747         struct sk_buff *msg;
1748         struct cfg80211_registered_device *dev = info->user_ptr[0];
1749         struct net_device *netdev = info->user_ptr[1];
1750
1751         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1752         if (!msg)
1753                 return -ENOMEM;
1754
1755         if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1756                                dev, netdev) < 0) {
1757                 nlmsg_free(msg);
1758                 return -ENOBUFS;
1759         }
1760
1761         return genlmsg_reply(msg, info);
1762 }
1763
1764 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1765         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1766         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1767         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1768         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1769         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1770 };
1771
1772 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1773 {
1774         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1775         int flag;
1776
1777         *mntrflags = 0;
1778
1779         if (!nla)
1780                 return -EINVAL;
1781
1782         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1783                              nla, mntr_flags_policy))
1784                 return -EINVAL;
1785
1786         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1787                 if (flags[flag])
1788                         *mntrflags |= (1<<flag);
1789
1790         return 0;
1791 }
1792
1793 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1794                                struct net_device *netdev, u8 use_4addr,
1795                                enum nl80211_iftype iftype)
1796 {
1797         if (!use_4addr) {
1798                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1799                         return -EBUSY;
1800                 return 0;
1801         }
1802
1803         switch (iftype) {
1804         case NL80211_IFTYPE_AP_VLAN:
1805                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1806                         return 0;
1807                 break;
1808         case NL80211_IFTYPE_STATION:
1809                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1810                         return 0;
1811                 break;
1812         default:
1813                 break;
1814         }
1815
1816         return -EOPNOTSUPP;
1817 }
1818
1819 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1820 {
1821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1822         struct vif_params params;
1823         int err;
1824         enum nl80211_iftype otype, ntype;
1825         struct net_device *dev = info->user_ptr[1];
1826         u32 _flags, *flags = NULL;
1827         bool change = false;
1828
1829         memset(&params, 0, sizeof(params));
1830
1831         otype = ntype = dev->ieee80211_ptr->iftype;
1832
1833         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1834                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1835                 if (otype != ntype)
1836                         change = true;
1837                 if (ntype > NL80211_IFTYPE_MAX)
1838                         return -EINVAL;
1839         }
1840
1841         if (info->attrs[NL80211_ATTR_MESH_ID]) {
1842                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1843
1844                 if (ntype != NL80211_IFTYPE_MESH_POINT)
1845                         return -EINVAL;
1846                 if (netif_running(dev))
1847                         return -EBUSY;
1848
1849                 wdev_lock(wdev);
1850                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1851                              IEEE80211_MAX_MESH_ID_LEN);
1852                 wdev->mesh_id_up_len =
1853                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1854                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1855                        wdev->mesh_id_up_len);
1856                 wdev_unlock(wdev);
1857         }
1858
1859         if (info->attrs[NL80211_ATTR_4ADDR]) {
1860                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1861                 change = true;
1862                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1863                 if (err)
1864                         return err;
1865         } else {
1866                 params.use_4addr = -1;
1867         }
1868
1869         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1870                 if (ntype != NL80211_IFTYPE_MONITOR)
1871                         return -EINVAL;
1872                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1873                                           &_flags);
1874                 if (err)
1875                         return err;
1876
1877                 flags = &_flags;
1878                 change = true;
1879         }
1880
1881         if (change)
1882                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1883         else
1884                 err = 0;
1885
1886         if (!err && params.use_4addr != -1)
1887                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1888
1889         return err;
1890 }
1891
1892 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1893 {
1894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1895         struct vif_params params;
1896         struct net_device *dev;
1897         int err;
1898         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1899         u32 flags;
1900
1901         memset(&params, 0, sizeof(params));
1902
1903         if (!info->attrs[NL80211_ATTR_IFNAME])
1904                 return -EINVAL;
1905
1906         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1907                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1908                 if (type > NL80211_IFTYPE_MAX)
1909                         return -EINVAL;
1910         }
1911
1912         if (!rdev->ops->add_virtual_intf ||
1913             !(rdev->wiphy.interface_modes & (1 << type)))
1914                 return -EOPNOTSUPP;
1915
1916         if (info->attrs[NL80211_ATTR_4ADDR]) {
1917                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1918                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1919                 if (err)
1920                         return err;
1921         }
1922
1923         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1924                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1925                                   &flags);
1926         dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1927                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1928                 type, err ? NULL : &flags, &params);
1929         if (IS_ERR(dev))
1930                 return PTR_ERR(dev);
1931
1932         if (type == NL80211_IFTYPE_MESH_POINT &&
1933             info->attrs[NL80211_ATTR_MESH_ID]) {
1934                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1935
1936                 wdev_lock(wdev);
1937                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1938                              IEEE80211_MAX_MESH_ID_LEN);
1939                 wdev->mesh_id_up_len =
1940                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1941                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1942                        wdev->mesh_id_up_len);
1943                 wdev_unlock(wdev);
1944         }
1945
1946         return 0;
1947 }
1948
1949 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1950 {
1951         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1952         struct net_device *dev = info->user_ptr[1];
1953
1954         if (!rdev->ops->del_virtual_intf)
1955                 return -EOPNOTSUPP;
1956
1957         return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1958 }
1959
1960 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1961 {
1962         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1963         struct net_device *dev = info->user_ptr[1];
1964         u16 noack_map;
1965
1966         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1967                 return -EINVAL;
1968
1969         if (!rdev->ops->set_noack_map)
1970                 return -EOPNOTSUPP;
1971
1972         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1973
1974         return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1975 }
1976
1977 struct get_key_cookie {
1978         struct sk_buff *msg;
1979         int error;
1980         int idx;
1981 };
1982
1983 static void get_key_callback(void *c, struct key_params *params)
1984 {
1985         struct nlattr *key;
1986         struct get_key_cookie *cookie = c;
1987
1988         if ((params->key &&
1989              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
1990                      params->key_len, params->key)) ||
1991             (params->seq &&
1992              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
1993                      params->seq_len, params->seq)) ||
1994             (params->cipher &&
1995              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1996                          params->cipher)))
1997                 goto nla_put_failure;
1998
1999         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2000         if (!key)
2001                 goto nla_put_failure;
2002
2003         if ((params->key &&
2004              nla_put(cookie->msg, NL80211_KEY_DATA,
2005                      params->key_len, params->key)) ||
2006             (params->seq &&
2007              nla_put(cookie->msg, NL80211_KEY_SEQ,
2008                      params->seq_len, params->seq)) ||
2009             (params->cipher &&
2010              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2011                          params->cipher)))
2012                 goto nla_put_failure;
2013
2014         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2015                 goto nla_put_failure;
2016
2017         nla_nest_end(cookie->msg, key);
2018
2019         return;
2020  nla_put_failure:
2021         cookie->error = 1;
2022 }
2023
2024 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2025 {
2026         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2027         int err;
2028         struct net_device *dev = info->user_ptr[1];
2029         u8 key_idx = 0;
2030         const u8 *mac_addr = NULL;
2031         bool pairwise;
2032         struct get_key_cookie cookie = {
2033                 .error = 0,
2034         };
2035         void *hdr;
2036         struct sk_buff *msg;
2037
2038         if (info->attrs[NL80211_ATTR_KEY_IDX])
2039                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2040
2041         if (key_idx > 5)
2042                 return -EINVAL;
2043
2044         if (info->attrs[NL80211_ATTR_MAC])
2045                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2046
2047         pairwise = !!mac_addr;
2048         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2049                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2050                 if (kt >= NUM_NL80211_KEYTYPES)
2051                         return -EINVAL;
2052                 if (kt != NL80211_KEYTYPE_GROUP &&
2053                     kt != NL80211_KEYTYPE_PAIRWISE)
2054                         return -EINVAL;
2055                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2056         }
2057
2058         if (!rdev->ops->get_key)
2059                 return -EOPNOTSUPP;
2060
2061         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2062         if (!msg)
2063                 return -ENOMEM;
2064
2065         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2066                              NL80211_CMD_NEW_KEY);
2067         if (IS_ERR(hdr))
2068                 return PTR_ERR(hdr);
2069
2070         cookie.msg = msg;
2071         cookie.idx = key_idx;
2072
2073         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2074             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2075                 goto nla_put_failure;
2076         if (mac_addr &&
2077             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2078                 goto nla_put_failure;
2079
2080         if (pairwise && mac_addr &&
2081             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2082                 return -ENOENT;
2083
2084         err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
2085                                  mac_addr, &cookie, get_key_callback);
2086
2087         if (err)
2088                 goto free_msg;
2089
2090         if (cookie.error)
2091                 goto nla_put_failure;
2092
2093         genlmsg_end(msg, hdr);
2094         return genlmsg_reply(msg, info);
2095
2096  nla_put_failure:
2097         err = -ENOBUFS;
2098  free_msg:
2099         nlmsg_free(msg);
2100         return err;
2101 }
2102
2103 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2104 {
2105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2106         struct key_parse key;
2107         int err;
2108         struct net_device *dev = info->user_ptr[1];
2109
2110         err = nl80211_parse_key(info, &key);
2111         if (err)
2112                 return err;
2113
2114         if (key.idx < 0)
2115                 return -EINVAL;
2116
2117         /* only support setting default key */
2118         if (!key.def && !key.defmgmt)
2119                 return -EINVAL;
2120
2121         wdev_lock(dev->ieee80211_ptr);
2122
2123         if (key.def) {
2124                 if (!rdev->ops->set_default_key) {
2125                         err = -EOPNOTSUPP;
2126                         goto out;
2127                 }
2128
2129                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2130                 if (err)
2131                         goto out;
2132
2133                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
2134                                                  key.def_uni, key.def_multi);
2135
2136                 if (err)
2137                         goto out;
2138
2139 #ifdef CONFIG_CFG80211_WEXT
2140                 dev->ieee80211_ptr->wext.default_key = key.idx;
2141 #endif
2142         } else {
2143                 if (key.def_uni || !key.def_multi) {
2144                         err = -EINVAL;
2145                         goto out;
2146                 }
2147
2148                 if (!rdev->ops->set_default_mgmt_key) {
2149                         err = -EOPNOTSUPP;
2150                         goto out;
2151                 }
2152
2153                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2154                 if (err)
2155                         goto out;
2156
2157                 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
2158                                                       dev, key.idx);
2159                 if (err)
2160                         goto out;
2161
2162 #ifdef CONFIG_CFG80211_WEXT
2163                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2164 #endif
2165         }
2166
2167  out:
2168         wdev_unlock(dev->ieee80211_ptr);
2169
2170         return err;
2171 }
2172
2173 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2174 {
2175         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2176         int err;
2177         struct net_device *dev = info->user_ptr[1];
2178         struct key_parse key;
2179         const u8 *mac_addr = NULL;
2180
2181         err = nl80211_parse_key(info, &key);
2182         if (err)
2183                 return err;
2184
2185         if (!key.p.key)
2186                 return -EINVAL;
2187
2188         if (info->attrs[NL80211_ATTR_MAC])
2189                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2190
2191         if (key.type == -1) {
2192                 if (mac_addr)
2193                         key.type = NL80211_KEYTYPE_PAIRWISE;
2194                 else
2195                         key.type = NL80211_KEYTYPE_GROUP;
2196         }
2197
2198         /* for now */
2199         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2200             key.type != NL80211_KEYTYPE_GROUP)
2201                 return -EINVAL;
2202
2203         if (!rdev->ops->add_key)
2204                 return -EOPNOTSUPP;
2205
2206         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2207                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2208                                            mac_addr))
2209                 return -EINVAL;
2210
2211         wdev_lock(dev->ieee80211_ptr);
2212         err = nl80211_key_allowed(dev->ieee80211_ptr);
2213         if (!err)
2214                 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2215                                          key.type == NL80211_KEYTYPE_PAIRWISE,
2216                                          mac_addr, &key.p);
2217         wdev_unlock(dev->ieee80211_ptr);
2218
2219         return err;
2220 }
2221
2222 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2223 {
2224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2225         int err;
2226         struct net_device *dev = info->user_ptr[1];
2227         u8 *mac_addr = NULL;
2228         struct key_parse key;
2229
2230         err = nl80211_parse_key(info, &key);
2231         if (err)
2232                 return err;
2233
2234         if (info->attrs[NL80211_ATTR_MAC])
2235                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2236
2237         if (key.type == -1) {
2238                 if (mac_addr)
2239                         key.type = NL80211_KEYTYPE_PAIRWISE;
2240                 else
2241                         key.type = NL80211_KEYTYPE_GROUP;
2242         }
2243
2244         /* for now */
2245         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2246             key.type != NL80211_KEYTYPE_GROUP)
2247                 return -EINVAL;
2248
2249         if (!rdev->ops->del_key)
2250                 return -EOPNOTSUPP;
2251
2252         wdev_lock(dev->ieee80211_ptr);
2253         err = nl80211_key_allowed(dev->ieee80211_ptr);
2254
2255         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2256             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2257                 err = -ENOENT;
2258
2259         if (!err)
2260                 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2261                                          key.type == NL80211_KEYTYPE_PAIRWISE,
2262                                          mac_addr);
2263
2264 #ifdef CONFIG_CFG80211_WEXT
2265         if (!err) {
2266                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2267                         dev->ieee80211_ptr->wext.default_key = -1;
2268                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2269                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2270         }
2271 #endif
2272         wdev_unlock(dev->ieee80211_ptr);
2273
2274         return err;
2275 }
2276
2277 static int nl80211_parse_beacon(struct genl_info *info,
2278                                 struct cfg80211_beacon_data *bcn)
2279 {
2280         bool haveinfo = false;
2281
2282         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2283             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2284             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2285             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2286                 return -EINVAL;
2287
2288         memset(bcn, 0, sizeof(*bcn));
2289
2290         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2291                 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2292                 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2293                 if (!bcn->head_len)
2294                         return -EINVAL;
2295                 haveinfo = true;
2296         }
2297
2298         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2299                 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2300                 bcn->tail_len =
2301                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2302                 haveinfo = true;
2303         }
2304
2305         if (!haveinfo)
2306                 return -EINVAL;
2307
2308         if (info->attrs[NL80211_ATTR_IE]) {
2309                 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2310                 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2311         }
2312
2313         if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2314                 bcn->proberesp_ies =
2315                         nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2316                 bcn->proberesp_ies_len =
2317                         nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2318         }
2319
2320         if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2321                 bcn->assocresp_ies =
2322                         nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2323                 bcn->assocresp_ies_len =
2324                         nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2325         }
2326
2327         if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2328                 bcn->probe_resp =
2329                         nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2330                 bcn->probe_resp_len =
2331                         nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2332         }
2333
2334         return 0;
2335 }
2336
2337 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2338 {
2339         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2340         struct net_device *dev = info->user_ptr[1];
2341         struct wireless_dev *wdev = dev->ieee80211_ptr;
2342         struct cfg80211_ap_settings params;
2343         int err;
2344
2345         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2346             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2347                 return -EOPNOTSUPP;
2348
2349         if (!rdev->ops->start_ap)
2350                 return -EOPNOTSUPP;
2351
2352         if (wdev->beacon_interval)
2353                 return -EALREADY;
2354
2355         memset(&params, 0, sizeof(params));
2356
2357         /* these are required for START_AP */
2358         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2359             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2360             !info->attrs[NL80211_ATTR_BEACON_HEAD])
2361                 return -EINVAL;
2362
2363         err = nl80211_parse_beacon(info, &params.beacon);
2364         if (err)
2365                 return err;
2366
2367         params.beacon_interval =
2368                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2369         params.dtim_period =
2370                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2371
2372         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2373         if (err)
2374                 return err;
2375
2376         /*
2377          * In theory, some of these attributes should be required here
2378          * but since they were not used when the command was originally
2379          * added, keep them optional for old user space programs to let
2380          * them continue to work with drivers that do not need the
2381          * additional information -- drivers must check!
2382          */
2383         if (info->attrs[NL80211_ATTR_SSID]) {
2384                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2385                 params.ssid_len =
2386                         nla_len(info->attrs[NL80211_ATTR_SSID]);
2387                 if (params.ssid_len == 0 ||
2388                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
2389                         return -EINVAL;
2390         }
2391
2392         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2393                 params.hidden_ssid = nla_get_u32(
2394                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2395                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2396                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2397                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2398                         return -EINVAL;
2399         }
2400
2401         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2402
2403         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2404                 params.auth_type = nla_get_u32(
2405                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
2406                 if (!nl80211_valid_auth_type(params.auth_type))
2407                         return -EINVAL;
2408         } else
2409                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2410
2411         err = nl80211_crypto_settings(rdev, info, &params.crypto,
2412                                       NL80211_MAX_NR_CIPHER_SUITES);
2413         if (err)
2414                 return err;
2415
2416         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2417                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2418                         return -EOPNOTSUPP;
2419                 params.inactivity_timeout = nla_get_u16(
2420                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2421         }
2422
2423         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2424                 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
2425
2426                 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
2427                     !nl80211_valid_channel_type(info, &channel_type))
2428                         return -EINVAL;
2429
2430                 params.channel = rdev_freq_to_chan(rdev,
2431                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
2432                         channel_type);
2433                 if (!params.channel)
2434                         return -EINVAL;
2435                 params.channel_type = channel_type;
2436         } else if (wdev->preset_chan) {
2437                 params.channel = wdev->preset_chan;
2438                 params.channel_type = wdev->preset_chantype;
2439         } else
2440                 return -EINVAL;
2441
2442         if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, params.channel,
2443                                           params.channel_type))
2444                 return -EINVAL;
2445
2446         err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2447         if (!err)
2448                 wdev->beacon_interval = params.beacon_interval;
2449         return err;
2450 }
2451
2452 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2453 {
2454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2455         struct net_device *dev = info->user_ptr[1];
2456         struct wireless_dev *wdev = dev->ieee80211_ptr;
2457         struct cfg80211_beacon_data params;
2458         int err;
2459
2460         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2461             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2462                 return -EOPNOTSUPP;
2463
2464         if (!rdev->ops->change_beacon)
2465                 return -EOPNOTSUPP;
2466
2467         if (!wdev->beacon_interval)
2468                 return -EINVAL;
2469
2470         err = nl80211_parse_beacon(info, &params);
2471         if (err)
2472                 return err;
2473
2474         return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2475 }
2476
2477 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2478 {
2479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2480         struct net_device *dev = info->user_ptr[1];
2481         struct wireless_dev *wdev = dev->ieee80211_ptr;
2482         int err;
2483
2484         if (!rdev->ops->stop_ap)
2485                 return -EOPNOTSUPP;
2486
2487         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2488             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2489                 return -EOPNOTSUPP;
2490
2491         if (!wdev->beacon_interval)
2492                 return -ENOENT;
2493
2494         err = rdev->ops->stop_ap(&rdev->wiphy, dev);
2495         if (!err)
2496                 wdev->beacon_interval = 0;
2497         return err;
2498 }
2499
2500 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2501         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2502         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2503         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2504         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2505         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2506         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2507 };
2508
2509 static int parse_station_flags(struct genl_info *info,
2510                                enum nl80211_iftype iftype,
2511                                struct station_parameters *params)
2512 {
2513         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2514         struct nlattr *nla;
2515         int flag;
2516
2517         /*
2518          * Try parsing the new attribute first so userspace
2519          * can specify both for older kernels.
2520          */
2521         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2522         if (nla) {
2523                 struct nl80211_sta_flag_update *sta_flags;
2524
2525                 sta_flags = nla_data(nla);
2526                 params->sta_flags_mask = sta_flags->mask;
2527                 params->sta_flags_set = sta_flags->set;
2528                 if ((params->sta_flags_mask |
2529                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2530                         return -EINVAL;
2531                 return 0;
2532         }
2533
2534         /* if present, parse the old attribute */
2535
2536         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2537         if (!nla)
2538                 return 0;
2539
2540         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2541                              nla, sta_flags_policy))
2542                 return -EINVAL;
2543
2544         /*
2545          * Only allow certain flags for interface types so that
2546          * other attributes are silently ignored. Remember that
2547          * this is backward compatibility code with old userspace
2548          * and shouldn't be hit in other cases anyway.
2549          */
2550         switch (iftype) {
2551         case NL80211_IFTYPE_AP:
2552         case NL80211_IFTYPE_AP_VLAN:
2553         case NL80211_IFTYPE_P2P_GO:
2554                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2555                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2556                                          BIT(NL80211_STA_FLAG_WME) |
2557                                          BIT(NL80211_STA_FLAG_MFP);
2558                 break;
2559         case NL80211_IFTYPE_P2P_CLIENT:
2560         case NL80211_IFTYPE_STATION:
2561                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2562                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
2563                 break;
2564         case NL80211_IFTYPE_MESH_POINT:
2565                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2566                                          BIT(NL80211_STA_FLAG_MFP) |
2567                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
2568         default:
2569                 return -EINVAL;
2570         }
2571
2572         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2573                 if (flags[flag]) {
2574                         params->sta_flags_set |= (1<<flag);
2575
2576                         /* no longer support new API additions in old API */
2577                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2578                                 return -EINVAL;
2579                 }
2580         }
2581
2582         return 0;
2583 }
2584
2585 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2586                                  int attr)
2587 {
2588         struct nlattr *rate;
2589         u16 bitrate;
2590
2591         rate = nla_nest_start(msg, attr);
2592         if (!rate)
2593                 goto nla_put_failure;
2594
2595         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2596         bitrate = cfg80211_calculate_bitrate(info);
2597         if ((bitrate > 0 &&
2598              nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate)) ||
2599             ((info->flags & RATE_INFO_FLAGS_MCS) &&
2600              nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) ||
2601             ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) &&
2602              nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) ||
2603             ((info->flags & RATE_INFO_FLAGS_SHORT_GI) &&
2604              nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)))
2605                 goto nla_put_failure;
2606
2607         nla_nest_end(msg, rate);
2608         return true;
2609
2610 nla_put_failure:
2611         return false;
2612 }
2613
2614 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2615                                 int flags,
2616                                 struct cfg80211_registered_device *rdev,
2617                                 struct net_device *dev,
2618                                 const u8 *mac_addr, struct station_info *sinfo)
2619 {
2620         void *hdr;
2621         struct nlattr *sinfoattr, *bss_param;
2622
2623         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2624         if (!hdr)
2625                 return -1;
2626
2627         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2628             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2629             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2630                 goto nla_put_failure;
2631
2632         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2633         if (!sinfoattr)
2634                 goto nla_put_failure;
2635         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2636             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2637                         sinfo->connected_time))
2638                 goto nla_put_failure;
2639         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2640             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2641                         sinfo->inactive_time))
2642                 goto nla_put_failure;
2643         if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2644             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2645                         sinfo->rx_bytes))
2646                 goto nla_put_failure;
2647         if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2648             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2649                         sinfo->tx_bytes))
2650                 goto nla_put_failure;
2651         if ((sinfo->filled & STATION_INFO_LLID) &&
2652             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2653                 goto nla_put_failure;
2654         if ((sinfo->filled & STATION_INFO_PLID) &&
2655             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2656                 goto nla_put_failure;
2657         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2658             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2659                        sinfo->plink_state))
2660                 goto nla_put_failure;
2661         switch (rdev->wiphy.signal_type) {
2662         case CFG80211_SIGNAL_TYPE_MBM:
2663                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2664                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2665                                sinfo->signal))
2666                         goto nla_put_failure;
2667                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2668                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2669                                sinfo->signal_avg))
2670                         goto nla_put_failure;
2671                 break;
2672         default:
2673                 break;
2674         }
2675         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2676                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2677                                           NL80211_STA_INFO_TX_BITRATE))
2678                         goto nla_put_failure;
2679         }
2680         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2681                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2682                                           NL80211_STA_INFO_RX_BITRATE))
2683                         goto nla_put_failure;
2684         }
2685         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2686             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2687                         sinfo->rx_packets))
2688                 goto nla_put_failure;
2689         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2690             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2691                         sinfo->tx_packets))
2692                 goto nla_put_failure;
2693         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2694             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2695                         sinfo->tx_retries))
2696                 goto nla_put_failure;
2697         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2698             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2699                         sinfo->tx_failed))
2700                 goto nla_put_failure;
2701         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
2702             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
2703                         sinfo->beacon_loss_count))
2704                 goto nla_put_failure;
2705         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2706                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2707                 if (!bss_param)
2708                         goto nla_put_failure;
2709
2710                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
2711                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
2712                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
2713                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
2714                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
2715                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
2716                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2717                                sinfo->bss_param.dtim_period) ||
2718                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2719                                 sinfo->bss_param.beacon_interval))
2720                         goto nla_put_failure;
2721
2722                 nla_nest_end(msg, bss_param);
2723         }
2724         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
2725             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
2726                     sizeof(struct nl80211_sta_flag_update),
2727                     &sinfo->sta_flags))
2728                 goto nla_put_failure;
2729         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
2730                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
2731                             sinfo->t_offset))
2732                 goto nla_put_failure;
2733         nla_nest_end(msg, sinfoattr);
2734
2735         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
2736             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2737                     sinfo->assoc_req_ies))
2738                 goto nla_put_failure;
2739
2740         return genlmsg_end(msg, hdr);
2741
2742  nla_put_failure:
2743         genlmsg_cancel(msg, hdr);
2744         return -EMSGSIZE;
2745 }
2746
2747 static int nl80211_dump_station(struct sk_buff *skb,
2748                                 struct netlink_callback *cb)
2749 {
2750         struct station_info sinfo;
2751         struct cfg80211_registered_device *dev;
2752         struct net_device *netdev;
2753         u8 mac_addr[ETH_ALEN];
2754         int sta_idx = cb->args[1];
2755         int err;
2756
2757         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2758         if (err)
2759                 return err;
2760
2761         if (!dev->ops->dump_station) {
2762                 err = -EOPNOTSUPP;
2763                 goto out_err;
2764         }
2765
2766         while (1) {
2767                 memset(&sinfo, 0, sizeof(sinfo));
2768                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2769                                              mac_addr, &sinfo);
2770                 if (err == -ENOENT)
2771                         break;
2772                 if (err)
2773                         goto out_err;
2774
2775                 if (nl80211_send_station(skb,
2776                                 NETLINK_CB(cb->skb).pid,
2777                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2778                                 dev, netdev, mac_addr,
2779                                 &sinfo) < 0)
2780                         goto out;
2781
2782                 sta_idx++;
2783         }
2784
2785
2786  out:
2787         cb->args[1] = sta_idx;
2788         err = skb->len;
2789  out_err:
2790         nl80211_finish_netdev_dump(dev);
2791
2792         return err;
2793 }
2794
2795 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2796 {
2797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2798         struct net_device *dev = info->user_ptr[1];
2799         struct station_info sinfo;
2800         struct sk_buff *msg;
2801         u8 *mac_addr = NULL;
2802         int err;
2803
2804         memset(&sinfo, 0, sizeof(sinfo));
2805
2806         if (!info->attrs[NL80211_ATTR_MAC])
2807                 return -EINVAL;
2808
2809         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2810
2811         if (!rdev->ops->get_station)
2812                 return -EOPNOTSUPP;
2813
2814         err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2815         if (err)
2816                 return err;
2817
2818         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2819         if (!msg)
2820                 return -ENOMEM;
2821
2822         if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2823                                  rdev, dev, mac_addr, &sinfo) < 0) {
2824                 nlmsg_free(msg);
2825                 return -ENOBUFS;
2826         }
2827
2828         return genlmsg_reply(msg, info);
2829 }
2830
2831 /*
2832  * Get vlan interface making sure it is running and on the right wiphy.
2833  */
2834 static struct net_device *get_vlan(struct genl_info *info,
2835                                    struct cfg80211_registered_device *rdev)
2836 {
2837         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2838         struct net_device *v;
2839         int ret;
2840
2841         if (!vlanattr)
2842                 return NULL;
2843
2844         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2845         if (!v)
2846                 return ERR_PTR(-ENODEV);
2847
2848         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2849                 ret = -EINVAL;
2850                 goto error;
2851         }
2852
2853         if (!netif_running(v)) {
2854                 ret = -ENETDOWN;
2855                 goto error;
2856         }
2857
2858         return v;
2859  error:
2860         dev_put(v);
2861         return ERR_PTR(ret);
2862 }
2863
2864 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2865 {
2866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2867         int err;
2868         struct net_device *dev = info->user_ptr[1];
2869         struct station_parameters params;
2870         u8 *mac_addr = NULL;
2871
2872         memset(&params, 0, sizeof(params));
2873
2874         params.listen_interval = -1;
2875         params.plink_state = -1;
2876
2877         if (info->attrs[NL80211_ATTR_STA_AID])
2878                 return -EINVAL;
2879
2880         if (!info->attrs[NL80211_ATTR_MAC])
2881                 return -EINVAL;
2882
2883         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2884
2885         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2886                 params.supported_rates =
2887                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2888                 params.supported_rates_len =
2889                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2890         }
2891
2892         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2893                 params.listen_interval =
2894                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2895
2896         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2897                 params.ht_capa =
2898                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2899
2900         if (!rdev->ops->change_station)
2901                 return -EOPNOTSUPP;
2902
2903         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2904                 return -EINVAL;
2905
2906         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2907                 params.plink_action =
2908                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2909
2910         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2911                 params.plink_state =
2912                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2913
2914         switch (dev->ieee80211_ptr->iftype) {
2915         case NL80211_IFTYPE_AP:
2916         case NL80211_IFTYPE_AP_VLAN:
2917         case NL80211_IFTYPE_P2P_GO:
2918                 /* disallow mesh-specific things */
2919                 if (params.plink_action)
2920                         return -EINVAL;
2921
2922                 /* TDLS can't be set, ... */
2923                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2924                         return -EINVAL;
2925                 /*
2926                  * ... but don't bother the driver with it. This works around
2927                  * a hostapd/wpa_supplicant issue -- it always includes the
2928                  * TLDS_PEER flag in the mask even for AP mode.
2929                  */
2930                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2931
2932                 /* accept only the listed bits */
2933                 if (params.sta_flags_mask &
2934                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2935                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2936                                   BIT(NL80211_STA_FLAG_WME) |
2937                                   BIT(NL80211_STA_FLAG_MFP)))
2938                         return -EINVAL;
2939
2940                 /* must be last in here for error handling */
2941                 params.vlan = get_vlan(info, rdev);
2942                 if (IS_ERR(params.vlan))
2943                         return PTR_ERR(params.vlan);
2944                 break;
2945         case NL80211_IFTYPE_P2P_CLIENT:
2946         case NL80211_IFTYPE_STATION:
2947                 /*
2948                  * Don't allow userspace to change the TDLS_PEER flag,
2949                  * but silently ignore attempts to change it since we
2950                  * don't have state here to verify that it doesn't try
2951                  * to change the flag.
2952                  */
2953                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2954                 /* fall through */
2955         case NL80211_IFTYPE_ADHOC:
2956                 /* disallow things sta doesn't support */
2957                 if (params.plink_action)
2958                         return -EINVAL;
2959                 if (params.ht_capa)
2960                         return -EINVAL;
2961                 if (params.listen_interval >= 0)
2962                         return -EINVAL;
2963                 /* reject any changes other than AUTHORIZED */
2964                 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2965                         return -EINVAL;
2966                 break;
2967         case NL80211_IFTYPE_MESH_POINT:
2968                 /* disallow things mesh doesn't support */
2969                 if (params.vlan)
2970                         return -EINVAL;
2971                 if (params.ht_capa)
2972                         return -EINVAL;
2973                 if (params.listen_interval >= 0)
2974                         return -EINVAL;
2975                 /*
2976                  * No special handling for TDLS here -- the userspace
2977                  * mesh code doesn't have this bug.
2978                  */
2979                 if (params.sta_flags_mask &
2980                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2981                                   BIT(NL80211_STA_FLAG_MFP) |
2982                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
2983                         return -EINVAL;
2984                 break;
2985         default:
2986                 return -EOPNOTSUPP;
2987         }
2988
2989         /* be aware of params.vlan when changing code here */
2990
2991         err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2992
2993         if (params.vlan)
2994                 dev_put(params.vlan);
2995
2996         return err;
2997 }
2998
2999 static struct nla_policy
3000 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3001         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3002         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3003 };
3004
3005 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3006 {
3007         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3008         int err;
3009         struct net_device *dev = info->user_ptr[1];
3010         struct station_parameters params;
3011         u8 *mac_addr = NULL;
3012
3013         memset(&params, 0, sizeof(params));
3014
3015         if (!info->attrs[NL80211_ATTR_MAC])
3016                 return -EINVAL;
3017
3018         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3019                 return -EINVAL;
3020
3021         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3022                 return -EINVAL;
3023
3024         if (!info->attrs[NL80211_ATTR_STA_AID])
3025                 return -EINVAL;
3026
3027         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3028         params.supported_rates =
3029                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3030         params.supported_rates_len =
3031                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3032         params.listen_interval =
3033                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3034
3035         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3036         if (!params.aid || params.aid > IEEE80211_MAX_AID)
3037                 return -EINVAL;
3038
3039         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3040                 params.ht_capa =
3041                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3042
3043         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3044                 params.plink_action =
3045                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3046
3047         if (!rdev->ops->add_station)
3048                 return -EOPNOTSUPP;
3049
3050         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3051                 return -EINVAL;
3052
3053         switch (dev->ieee80211_ptr->iftype) {
3054         case NL80211_IFTYPE_AP:
3055         case NL80211_IFTYPE_AP_VLAN:
3056         case NL80211_IFTYPE_P2P_GO:
3057                 /* parse WME attributes if sta is WME capable */
3058                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3059                     (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3060                     info->attrs[NL80211_ATTR_STA_WME]) {
3061                         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3062                         struct nlattr *nla;
3063
3064                         nla = info->attrs[NL80211_ATTR_STA_WME];
3065                         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3066                                                nl80211_sta_wme_policy);
3067                         if (err)
3068                                 return err;
3069
3070                         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3071                                 params.uapsd_queues =
3072                                      nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3073                         if (params.uapsd_queues &
3074                                         ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3075                                 return -EINVAL;
3076
3077                         if (tb[NL80211_STA_WME_MAX_SP])
3078                                 params.max_sp =
3079                                      nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3080
3081                         if (params.max_sp &
3082                                         ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3083                                 return -EINVAL;
3084
3085                         params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3086                 }
3087                 /* TDLS peers cannot be added */
3088                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3089                         return -EINVAL;
3090                 /* but don't bother the driver with it */
3091                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3092
3093                 /* must be last in here for error handling */
3094                 params.vlan = get_vlan(info, rdev);
3095                 if (IS_ERR(params.vlan))
3096                         return PTR_ERR(params.vlan);
3097                 break;
3098         case NL80211_IFTYPE_MESH_POINT:
3099                 /* TDLS peers cannot be added */
3100                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3101                         return -EINVAL;
3102                 break;
3103         case NL80211_IFTYPE_STATION:
3104                 /* Only TDLS peers can be added */
3105                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3106                         return -EINVAL;
3107                 /* Can only add if TDLS ... */
3108                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3109                         return -EOPNOTSUPP;
3110                 /* ... with external setup is supported */
3111                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3112                         return -EOPNOTSUPP;
3113                 break;
3114         default:
3115                 return -EOPNOTSUPP;
3116         }
3117
3118         /* be aware of params.vlan when changing code here */
3119
3120         err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
3121
3122         if (params.vlan)
3123                 dev_put(params.vlan);
3124         return err;
3125 }
3126
3127 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3128 {
3129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3130         struct net_device *dev = info->user_ptr[1];
3131         u8 *mac_addr = NULL;
3132
3133         if (info->attrs[NL80211_ATTR_MAC])
3134                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3135
3136         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3137             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3138             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3139             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3140                 return -EINVAL;
3141
3142         if (!rdev->ops->del_station)
3143                 return -EOPNOTSUPP;
3144
3145         return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
3146 }
3147
3148 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
3149                                 int flags, struct net_device *dev,
3150                                 u8 *dst, u8 *next_hop,
3151                                 struct mpath_info *pinfo)
3152 {
3153         void *hdr;
3154         struct nlattr *pinfoattr;
3155
3156         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
3157         if (!hdr)
3158                 return -1;
3159
3160         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3161             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3162             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3163             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3164                 goto nla_put_failure;
3165
3166         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3167         if (!pinfoattr)
3168                 goto nla_put_failure;
3169         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3170             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3171                         pinfo->frame_qlen))
3172                 goto nla_put_failure;
3173         if (((pinfo->filled & MPATH_INFO_SN) &&
3174              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3175             ((pinfo->filled & MPATH_INFO_METRIC) &&
3176              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3177                          pinfo->metric)) ||
3178             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3179              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3180                          pinfo->exptime)) ||
3181             ((pinfo->filled & MPATH_INFO_FLAGS) &&
3182              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3183                         pinfo->flags)) ||
3184             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3185              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3186                          pinfo->discovery_timeout)) ||
3187             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3188              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3189                         pinfo->discovery_retries)))
3190                 goto nla_put_failure;
3191
3192         nla_nest_end(msg, pinfoattr);
3193
3194         return genlmsg_end(msg, hdr);
3195
3196  nla_put_failure:
3197         genlmsg_cancel(msg, hdr);
3198         return -EMSGSIZE;
3199 }
3200
3201 static int nl80211_dump_mpath(struct sk_buff *skb,
3202                               struct netlink_callback *cb)
3203 {
3204         struct mpath_info pinfo;
3205         struct cfg80211_registered_device *dev;
3206         struct net_device *netdev;
3207         u8 dst[ETH_ALEN];
3208         u8 next_hop[ETH_ALEN];
3209         int path_idx = cb->args[1];
3210         int err;
3211
3212         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3213         if (err)
3214                 return err;
3215
3216         if (!dev->ops->dump_mpath) {
3217                 err = -EOPNOTSUPP;
3218                 goto out_err;
3219         }
3220
3221         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3222                 err = -EOPNOTSUPP;
3223                 goto out_err;
3224         }
3225
3226         while (1) {
3227                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
3228                                            dst, next_hop, &pinfo);
3229                 if (err == -ENOENT)
3230                         break;
3231                 if (err)
3232                         goto out_err;
3233
3234                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
3235                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
3236                                        netdev, dst, next_hop,
3237                                        &pinfo) < 0)
3238                         goto out;
3239
3240                 path_idx++;
3241         }
3242
3243
3244  out:
3245         cb->args[1] = path_idx;
3246         err = skb->len;
3247  out_err:
3248         nl80211_finish_netdev_dump(dev);
3249         return err;
3250 }
3251
3252 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3253 {
3254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3255         int err;
3256         struct net_device *dev = info->user_ptr[1];
3257         struct mpath_info pinfo;
3258         struct sk_buff *msg;
3259         u8 *dst = NULL;
3260         u8 next_hop[ETH_ALEN];
3261
3262         memset(&pinfo, 0, sizeof(pinfo));
3263
3264         if (!info->attrs[NL80211_ATTR_MAC])
3265                 return -EINVAL;
3266
3267         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3268
3269         if (!rdev->ops->get_mpath)
3270                 return -EOPNOTSUPP;
3271
3272         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3273                 return -EOPNOTSUPP;
3274
3275         err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3276         if (err)
3277                 return err;
3278
3279         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3280         if (!msg)
3281                 return -ENOMEM;
3282
3283         if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
3284                                  dev, dst, next_hop, &pinfo) < 0) {
3285                 nlmsg_free(msg);
3286                 return -ENOBUFS;
3287         }
3288
3289         return genlmsg_reply(msg, info);
3290 }
3291
3292 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3293 {
3294         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3295         struct net_device *dev = info->user_ptr[1];
3296         u8 *dst = NULL;
3297         u8 *next_hop = NULL;
3298
3299         if (!info->attrs[NL80211_ATTR_MAC])
3300                 return -EINVAL;
3301
3302         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3303                 return -EINVAL;
3304
3305         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3306         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3307
3308         if (!rdev->ops->change_mpath)
3309                 return -EOPNOTSUPP;
3310
3311         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3312                 return -EOPNOTSUPP;
3313
3314         return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3315 }
3316
3317 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3318 {
3319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3320         struct net_device *dev = info->user_ptr[1];
3321         u8 *dst = NULL;
3322         u8 *next_hop = NULL;
3323
3324         if (!info->attrs[NL80211_ATTR_MAC])
3325                 return -EINVAL;
3326
3327         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3328                 return -EINVAL;
3329
3330         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3331         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3332
3333         if (!rdev->ops->add_mpath)
3334                 return -EOPNOTSUPP;
3335
3336         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3337                 return -EOPNOTSUPP;
3338
3339         return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3340 }
3341
3342 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3343 {
3344         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3345         struct net_device *dev = info->user_ptr[1];
3346         u8 *dst = NULL;
3347
3348         if (info->attrs[NL80211_ATTR_MAC])
3349                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3350
3351         if (!rdev->ops->del_mpath)
3352                 return -EOPNOTSUPP;
3353
3354         return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3355 }
3356
3357 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3358 {
3359         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3360         struct net_device *dev = info->user_ptr[1];
3361         struct bss_parameters params;
3362
3363         memset(&params, 0, sizeof(params));
3364         /* default to not changing parameters */
3365         params.use_cts_prot = -1;
3366         params.use_short_preamble = -1;
3367         params.use_short_slot_time = -1;
3368         params.ap_isolate = -1;
3369         params.ht_opmode = -1;
3370
3371         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3372                 params.use_cts_prot =
3373                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3374         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3375                 params.use_short_preamble =
3376                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3377         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3378                 params.use_short_slot_time =
3379                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3380         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3381                 params.basic_rates =
3382                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3383                 params.basic_rates_len =
3384                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3385         }
3386         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3387                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3388         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3389                 params.ht_opmode =
3390                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3391
3392         if (!rdev->ops->change_bss)
3393                 return -EOPNOTSUPP;
3394
3395         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3396             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3397                 return -EOPNOTSUPP;
3398
3399         return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3400 }
3401
3402 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3403         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
3404         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
3405         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
3406         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
3407         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
3408         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
3409 };
3410
3411 static int parse_reg_rule(struct nlattr *tb[],
3412         struct ieee80211_reg_rule *reg_rule)
3413 {
3414         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3415         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3416
3417         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3418                 return -EINVAL;
3419         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3420                 return -EINVAL;
3421         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3422                 return -EINVAL;
3423         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3424                 return -EINVAL;
3425         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3426                 return -EINVAL;
3427
3428         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3429
3430         freq_range->start_freq_khz =
3431                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3432         freq_range->end_freq_khz =
3433                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3434         freq_range->max_bandwidth_khz =
3435                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3436
3437         power_rule->max_eirp =
3438                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3439
3440         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3441                 power_rule->max_antenna_gain =
3442                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3443
3444         return 0;
3445 }
3446
3447 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3448 {
3449         int r;
3450         char *data = NULL;
3451
3452         /*
3453          * You should only get this when cfg80211 hasn't yet initialized
3454          * completely when built-in to the kernel right between the time
3455          * window between nl80211_init() and regulatory_init(), if that is
3456          * even possible.
3457          */
3458         mutex_lock(&cfg80211_mutex);
3459         if (unlikely(!cfg80211_regdomain)) {
3460                 mutex_unlock(&cfg80211_mutex);
3461                 return -EINPROGRESS;
3462         }
3463         mutex_unlock(&cfg80211_mutex);
3464
3465         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3466                 return -EINVAL;
3467
3468         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3469
3470         r = regulatory_hint_user(data);
3471
3472         return r;
3473 }
3474
3475 static int nl80211_get_mesh_config(struct sk_buff *skb,
3476                                    struct genl_info *info)
3477 {
3478         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3479         struct net_device *dev = info->user_ptr[1];
3480         struct wireless_dev *wdev = dev->ieee80211_ptr;
3481         struct mesh_config cur_params;
3482         int err = 0;
3483         void *hdr;
3484         struct nlattr *pinfoattr;
3485         struct sk_buff *msg;
3486
3487         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3488                 return -EOPNOTSUPP;
3489
3490         if (!rdev->ops->get_mesh_config)
3491                 return -EOPNOTSUPP;
3492
3493         wdev_lock(wdev);
3494         /* If not connected, get default parameters */
3495         if (!wdev->mesh_id_len)
3496                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3497         else
3498                 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3499                                                  &cur_params);
3500         wdev_unlock(wdev);
3501
3502         if (err)
3503                 return err;
3504
3505         /* Draw up a netlink message to send back */
3506         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3507         if (!msg)
3508                 return -ENOMEM;
3509         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3510                              NL80211_CMD_GET_MESH_CONFIG);
3511         if (!hdr)
3512                 goto out;
3513         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3514         if (!pinfoattr)
3515                 goto nla_put_failure;
3516         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3517             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3518                         cur_params.dot11MeshRetryTimeout) ||
3519             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3520                         cur_params.dot11MeshConfirmTimeout) ||
3521             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3522                         cur_params.dot11MeshHoldingTimeout) ||
3523             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3524                         cur_params.dot11MeshMaxPeerLinks) ||
3525             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3526                        cur_params.dot11MeshMaxRetries) ||
3527             nla_put_u8(msg, NL80211_MESHCONF_TTL,
3528                        cur_params.dot11MeshTTL) ||
3529             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3530                        cur_params.element_ttl) ||
3531             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3532                        cur_params.auto_open_plinks) ||
3533             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3534                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3535             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3536                        cur_params.dot11MeshHWMPmaxPREQretries) ||
3537             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3538                         cur_params.path_refresh_time) ||
3539             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3540                         cur_params.min_discovery_timeout) ||
3541             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3542                         cur_params.dot11MeshHWMPactivePathTimeout) ||
3543             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3544                         cur_params.dot11MeshHWMPpreqMinInterval) ||
3545             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3546                         cur_params.dot11MeshHWMPperrMinInterval) ||
3547             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3548                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3549             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3550                        cur_params.dot11MeshHWMPRootMode) ||
3551             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3552                         cur_params.dot11MeshHWMPRannInterval) ||
3553             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3554                        cur_params.dot11MeshGateAnnouncementProtocol) ||
3555             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3556                        cur_params.dot11MeshForwarding) ||
3557             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3558                         cur_params.rssi_threshold) ||
3559             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3560                         cur_params.ht_opmode) ||
3561             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3562                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3563             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3564                         cur_params.dot11MeshHWMProotInterval) ||
3565             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3566                         cur_params.dot11MeshHWMPconfirmationInterval))
3567                 goto nla_put_failure;
3568         nla_nest_end(msg, pinfoattr);
3569         genlmsg_end(msg, hdr);
3570         return genlmsg_reply(msg, info);
3571
3572  nla_put_failure:
3573         genlmsg_cancel(msg, hdr);
3574  out:
3575         nlmsg_free(msg);
3576         return -ENOBUFS;
3577 }
3578
3579 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3580         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3581         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3582         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3583         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3584         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3585         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3586         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3587         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3588         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3589         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3590         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3591         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3592         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3593         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3594         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3595         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3596         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3597         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3598         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3599         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3600         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3601         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3602         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3603         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3604         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3605 };
3606
3607 static const struct nla_policy
3608         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3609         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3610         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3611         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3612         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3613         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3614                                     .len = IEEE80211_MAX_DATA_LEN },
3615         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3616 };
3617
3618 static int nl80211_parse_mesh_config(struct genl_info *info,
3619                                      struct mesh_config *cfg,
3620                                      u32 *mask_out)
3621 {
3622         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3623         u32 mask = 0;
3624
3625 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3626 do {\
3627         if (table[attr_num]) {\
3628                 cfg->param = nla_fn(table[attr_num]); \
3629                 mask |= (1 << (attr_num - 1)); \
3630         } \
3631 } while (0);\
3632
3633
3634         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3635                 return -EINVAL;
3636         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3637                              info->attrs[NL80211_ATTR_MESH_CONFIG],
3638                              nl80211_meshconf_params_policy))
3639                 return -EINVAL;
3640
3641         /* This makes sure that there aren't more than 32 mesh config
3642          * parameters (otherwise our bitfield scheme would not work.) */
3643         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3644
3645         /* Fill in the params struct */
3646         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3647                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3648                                   nla_get_u16);
3649         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3650                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3651                                   nla_get_u16);
3652         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3653                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3654                                   nla_get_u16);
3655         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3656                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
3657                                   nla_get_u16);
3658         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3659                                   mask, NL80211_MESHCONF_MAX_RETRIES,
3660                                   nla_get_u8);
3661         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3662                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
3663         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3664                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
3665                                   nla_get_u8);
3666         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3667                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3668                                   nla_get_u8);
3669         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
3670                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3671                                   nla_get_u32);
3672         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3673                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3674                                   nla_get_u8);
3675         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3676                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
3677                                   nla_get_u32);
3678         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3679                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3680                                   nla_get_u16);
3681         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
3682                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3683                                   nla_get_u32);
3684         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3685                                   mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3686                                   nla_get_u16);
3687         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3688                                   mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3689                                   nla_get_u16);
3690         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3691                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
3692                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3693                                   nla_get_u16);
3694         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
3695                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
3696         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
3697                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3698                                   nla_get_u16);
3699         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3700                                   dot11MeshGateAnnouncementProtocol, mask,
3701                                   NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3702                                   nla_get_u8);
3703         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3704                                   mask, NL80211_MESHCONF_FORWARDING,
3705                                   nla_get_u8);
3706         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3707                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
3708                                   nla_get_u32);
3709         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
3710                                   mask, NL80211_MESHCONF_HT_OPMODE,
3711                                   nla_get_u16);
3712         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
3713                                   mask,
3714                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3715                                   nla_get_u32);
3716         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
3717                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3718                                   nla_get_u16);
3719         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3720                                   dot11MeshHWMPconfirmationInterval, mask,
3721                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3722                                   nla_get_u16);
3723         if (mask_out)
3724                 *mask_out = mask;
3725
3726         return 0;
3727
3728 #undef FILL_IN_MESH_PARAM_IF_SET
3729 }
3730
3731 static int nl80211_parse_mesh_setup(struct genl_info *info,
3732                                      struct mesh_setup *setup)
3733 {
3734         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3735
3736         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3737                 return -EINVAL;
3738         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3739                              info->attrs[NL80211_ATTR_MESH_SETUP],
3740                              nl80211_mesh_setup_params_policy))
3741                 return -EINVAL;
3742
3743         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3744                 setup->sync_method =
3745                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3746                  IEEE80211_SYNC_METHOD_VENDOR :
3747                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3748
3749         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3750                 setup->path_sel_proto =
3751                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3752                  IEEE80211_PATH_PROTOCOL_VENDOR :
3753                  IEEE80211_PATH_PROTOCOL_HWMP;
3754
3755         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3756                 setup->path_metric =
3757                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3758                  IEEE80211_PATH_METRIC_VENDOR :
3759                  IEEE80211_PATH_METRIC_AIRTIME;
3760
3761
3762         if (tb[NL80211_MESH_SETUP_IE]) {
3763                 struct nlattr *ieattr =
3764                         tb[NL80211_MESH_SETUP_IE];
3765                 if (!is_valid_ie_attr(ieattr))
3766                         return -EINVAL;
3767                 setup->ie = nla_data(ieattr);
3768                 setup->ie_len = nla_len(ieattr);
3769         }
3770         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3771         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3772
3773         return 0;
3774 }
3775
3776 static int nl80211_update_mesh_config(struct sk_buff *skb,
3777                                       struct genl_info *info)
3778 {
3779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3780         struct net_device *dev = info->user_ptr[1];
3781         struct wireless_dev *wdev = dev->ieee80211_ptr;
3782         struct mesh_config cfg;
3783         u32 mask;
3784         int err;
3785
3786         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3787                 return -EOPNOTSUPP;
3788
3789         if (!rdev->ops->update_mesh_config)
3790                 return -EOPNOTSUPP;
3791
3792         err = nl80211_parse_mesh_config(info, &cfg, &mask);
3793         if (err)
3794                 return err;
3795
3796         wdev_lock(wdev);
3797         if (!wdev->mesh_id_len)
3798                 err = -ENOLINK;
3799
3800         if (!err)
3801                 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3802                                                     mask, &cfg);
3803
3804         wdev_unlock(wdev);
3805
3806         return err;
3807 }
3808
3809 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3810 {
3811         struct sk_buff *msg;
3812         void *hdr = NULL;
3813         struct nlattr *nl_reg_rules;
3814         unsigned int i;
3815         int err = -EINVAL;
3816
3817         mutex_lock(&cfg80211_mutex);
3818
3819         if (!cfg80211_regdomain)
3820                 goto out;
3821
3822         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3823         if (!msg) {
3824                 err = -ENOBUFS;
3825                 goto out;
3826         }
3827
3828         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3829                              NL80211_CMD_GET_REG);
3830         if (!hdr)
3831                 goto put_failure;
3832
3833         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
3834                            cfg80211_regdomain->alpha2) ||
3835             (cfg80211_regdomain->dfs_region &&
3836              nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
3837                         cfg80211_regdomain->dfs_region)))
3838                 goto nla_put_failure;
3839
3840         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3841         if (!nl_reg_rules)
3842                 goto nla_put_failure;
3843
3844         for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3845                 struct nlattr *nl_reg_rule;
3846                 const struct ieee80211_reg_rule *reg_rule;
3847                 const struct ieee80211_freq_range *freq_range;
3848                 const struct ieee80211_power_rule *power_rule;
3849
3850                 reg_rule = &cfg80211_regdomain->reg_rules[i];
3851                 freq_range = &reg_rule->freq_range;
3852                 power_rule = &reg_rule->power_rule;
3853
3854                 nl_reg_rule = nla_nest_start(msg, i);
3855                 if (!nl_reg_rule)
3856                         goto nla_put_failure;
3857
3858                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3859                                 reg_rule->flags) ||
3860                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
3861                                 freq_range->start_freq_khz) ||
3862                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
3863                                 freq_range->end_freq_khz) ||
3864                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3865                                 freq_range->max_bandwidth_khz) ||
3866                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3867                                 power_rule->max_antenna_gain) ||
3868                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3869                                 power_rule->max_eirp))
3870                         goto nla_put_failure;
3871
3872                 nla_nest_end(msg, nl_reg_rule);
3873         }
3874
3875         nla_nest_end(msg, nl_reg_rules);
3876
3877         genlmsg_end(msg, hdr);
3878         err = genlmsg_reply(msg, info);
3879         goto out;
3880
3881 nla_put_failure:
3882         genlmsg_cancel(msg, hdr);
3883 put_failure:
3884         nlmsg_free(msg);
3885         err = -EMSGSIZE;
3886 out:
3887         mutex_unlock(&cfg80211_mutex);
3888         return err;
3889 }
3890
3891 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3892 {
3893         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3894         struct nlattr *nl_reg_rule;
3895         char *alpha2 = NULL;
3896         int rem_reg_rules = 0, r = 0;
3897         u32 num_rules = 0, rule_idx = 0, size_of_regd;
3898         u8 dfs_region = 0;
3899         struct ieee80211_regdomain *rd = NULL;
3900
3901         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3902                 return -EINVAL;
3903
3904         if (!info->attrs[NL80211_ATTR_REG_RULES])
3905                 return -EINVAL;
3906
3907         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3908
3909         if (info->attrs[NL80211_ATTR_DFS_REGION])
3910                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3911
3912         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3913                         rem_reg_rules) {
3914                 num_rules++;
3915                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3916                         return -EINVAL;
3917         }
3918
3919         mutex_lock(&cfg80211_mutex);
3920
3921         if (!reg_is_valid_request(alpha2)) {
3922                 r = -EINVAL;
3923                 goto bad_reg;
3924         }
3925
3926         size_of_regd = sizeof(struct ieee80211_regdomain) +
3927                 (num_rules * sizeof(struct ieee80211_reg_rule));
3928
3929         rd = kzalloc(size_of_regd, GFP_KERNEL);
3930         if (!rd) {
3931                 r = -ENOMEM;
3932                 goto bad_reg;
3933         }
3934
3935         rd->n_reg_rules = num_rules;
3936         rd->alpha2[0] = alpha2[0];
3937         rd->alpha2[1] = alpha2[1];
3938
3939         /*
3940          * Disable DFS master mode if the DFS region was
3941          * not supported or known on this kernel.
3942          */
3943         if (reg_supported_dfs_region(dfs_region))
3944                 rd->dfs_region = dfs_region;
3945
3946         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3947                         rem_reg_rules) {
3948                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3949                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3950                         reg_rule_policy);
3951                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3952                 if (r)
3953                         goto bad_reg;
3954
3955                 rule_idx++;
3956
3957                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3958                         r = -EINVAL;
3959                         goto bad_reg;
3960                 }
3961         }
3962
3963         BUG_ON(rule_idx != num_rules);
3964
3965         r = set_regdom(rd);
3966
3967         mutex_unlock(&cfg80211_mutex);
3968
3969         return r;
3970
3971  bad_reg:
3972         mutex_unlock(&cfg80211_mutex);
3973         kfree(rd);
3974         return r;
3975 }
3976
3977 static int validate_scan_freqs(struct nlattr *freqs)
3978 {
3979         struct nlattr *attr1, *attr2;
3980         int n_channels = 0, tmp1, tmp2;
3981
3982         nla_for_each_nested(attr1, freqs, tmp1) {
3983                 n_channels++;
3984                 /*
3985                  * Some hardware has a limited channel list for
3986                  * scanning, and it is pretty much nonsensical
3987                  * to scan for a channel twice, so disallow that
3988                  * and don't require drivers to check that the
3989                  * channel list they get isn't longer than what
3990                  * they can scan, as long as they can scan all
3991                  * the channels they registered at once.
3992                  */
3993                 nla_for_each_nested(attr2, freqs, tmp2)
3994                         if (attr1 != attr2 &&
3995                             nla_get_u32(attr1) == nla_get_u32(attr2))
3996                                 return 0;
3997         }
3998
3999         return n_channels;
4000 }
4001
4002 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4003 {
4004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4005         struct net_device *dev = info->user_ptr[1];
4006         struct cfg80211_scan_request *request;
4007         struct nlattr *attr;
4008         struct wiphy *wiphy;
4009         int err, tmp, n_ssids = 0, n_channels, i;
4010         size_t ie_len;
4011
4012         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4013                 return -EINVAL;
4014
4015         wiphy = &rdev->wiphy;
4016
4017         if (!rdev->ops->scan)
4018                 return -EOPNOTSUPP;
4019
4020         if (rdev->scan_req)
4021                 return -EBUSY;
4022
4023         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4024                 n_channels = validate_scan_freqs(
4025                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4026                 if (!n_channels)
4027                         return -EINVAL;
4028         } else {
4029                 enum ieee80211_band band;
4030                 n_channels = 0;
4031
4032                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4033                         if (wiphy->bands[band])
4034                                 n_channels += wiphy->bands[band]->n_channels;
4035         }
4036
4037         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4038                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4039                         n_ssids++;
4040
4041         if (n_ssids > wiphy->max_scan_ssids)
4042                 return -EINVAL;
4043
4044         if (info->attrs[NL80211_ATTR_IE])
4045                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4046         else
4047                 ie_len = 0;
4048
4049         if (ie_len > wiphy->max_scan_ie_len)
4050                 return -EINVAL;
4051
4052         request = kzalloc(sizeof(*request)
4053                         + sizeof(*request->ssids) * n_ssids
4054                         + sizeof(*request->channels) * n_channels
4055                         + ie_len, GFP_KERNEL);
4056         if (!request)
4057                 return -ENOMEM;
4058
4059         if (n_ssids)
4060                 request->ssids = (void *)&request->channels[n_channels];
4061         request->n_ssids = n_ssids;
4062         if (ie_len) {
4063                 if (request->ssids)
4064                         request->ie = (void *)(request->ssids + n_ssids);
4065                 else
4066                         request->ie = (void *)(request->channels + n_channels);
4067         }
4068
4069         i = 0;
4070         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4071                 /* user specified, bail out if channel not found */
4072                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4073                         struct ieee80211_channel *chan;
4074
4075                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4076
4077                         if (!chan) {
4078                                 err = -EINVAL;
4079                                 goto out_free;
4080                         }
4081
4082                         /* ignore disabled channels */
4083                         if (chan->flags & IEEE80211_CHAN_DISABLED)
4084                                 continue;
4085
4086                         request->channels[i] = chan;
4087                         i++;
4088                 }
4089         } else {
4090                 enum ieee80211_band band;
4091
4092                 /* all channels */
4093                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4094                         int j;
4095                         if (!wiphy->bands[band])
4096                                 continue;
4097                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4098                                 struct ieee80211_channel *chan;
4099
4100                                 chan = &wiphy->bands[band]->channels[j];
4101
4102                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
4103                                         continue;
4104
4105                                 request->channels[i] = chan;
4106                                 i++;
4107                         }
4108                 }
4109         }
4110
4111         if (!i) {
4112                 err = -EINVAL;
4113                 goto out_free;
4114         }
4115
4116         request->n_channels = i;
4117
4118         i = 0;
4119         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4120                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4121                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4122                                 err = -EINVAL;
4123                                 goto out_free;
4124                         }
4125                         request->ssids[i].ssid_len = nla_len(attr);
4126                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4127                         i++;
4128                 }
4129         }
4130
4131         if (info->attrs[NL80211_ATTR_IE]) {
4132                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4133                 memcpy((void *)request->ie,
4134                        nla_data(info->attrs[NL80211_ATTR_IE]),
4135                        request->ie_len);
4136         }
4137
4138         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4139                 if (wiphy->bands[i])
4140                         request->rates[i] =
4141                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
4142
4143         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4144                 nla_for_each_nested(attr,
4145                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4146                                     tmp) {
4147                         enum ieee80211_band band = nla_type(attr);
4148
4149                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4150                                 err = -EINVAL;
4151                                 goto out_free;
4152                         }
4153                         err = ieee80211_get_ratemask(wiphy->bands[band],
4154                                                      nla_data(attr),
4155                                                      nla_len(attr),
4156                                                      &request->rates[band]);
4157                         if (err)
4158                                 goto out_free;
4159                 }
4160         }
4161
4162         request->no_cck =
4163                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4164
4165         request->dev = dev;
4166         request->wiphy = &rdev->wiphy;
4167
4168         rdev->scan_req = request;
4169         err = rdev->ops->scan(&rdev->wiphy, dev, request);
4170
4171         if (!err) {
4172                 nl80211_send_scan_start(rdev, dev);
4173                 dev_hold(dev);
4174         } else {
4175  out_free:
4176                 rdev->scan_req = NULL;
4177                 kfree(request);
4178         }
4179
4180         return err;
4181 }
4182
4183 static int nl80211_start_sched_scan(struct sk_buff *skb,
4184                                     struct genl_info *info)
4185 {
4186         struct cfg80211_sched_scan_request *request;
4187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4188         struct net_device *dev = info->user_ptr[1];
4189         struct nlattr *attr;
4190         struct wiphy *wiphy;
4191         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4192         u32 interval;
4193         enum ieee80211_band band;
4194         size_t ie_len;
4195         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4196
4197         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4198             !rdev->ops->sched_scan_start)
4199                 return -EOPNOTSUPP;
4200
4201         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4202                 return -EINVAL;
4203
4204         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4205                 return -EINVAL;
4206
4207         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4208         if (interval == 0)
4209                 return -EINVAL;
4210
4211         wiphy = &rdev->wiphy;
4212
4213         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4214                 n_channels = validate_scan_freqs(
4215                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4216                 if (!n_channels)
4217                         return -EINVAL;
4218         } else {
4219                 n_channels = 0;
4220
4221                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4222                         if (wiphy->bands[band])
4223                                 n_channels += wiphy->bands[band]->n_channels;
4224         }
4225
4226         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4227                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4228                                     tmp)
4229                         n_ssids++;
4230
4231         if (n_ssids > wiphy->max_sched_scan_ssids)
4232                 return -EINVAL;
4233
4234         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4235                 nla_for_each_nested(attr,
4236                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4237                                     tmp)
4238                         n_match_sets++;
4239
4240         if (n_match_sets > wiphy->max_match_sets)
4241                 return -EINVAL;
4242
4243         if (info->attrs[NL80211_ATTR_IE])
4244                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4245         else
4246                 ie_len = 0;
4247
4248         if (ie_len > wiphy->max_sched_scan_ie_len)
4249                 return -EINVAL;
4250
4251         mutex_lock(&rdev->sched_scan_mtx);
4252
4253         if (rdev->sched_scan_req) {
4254                 err = -EINPROGRESS;
4255                 goto out;
4256         }
4257
4258         request = kzalloc(sizeof(*request)
4259                         + sizeof(*request->ssids) * n_ssids
4260                         + sizeof(*request->match_sets) * n_match_sets
4261                         + sizeof(*request->channels) * n_channels
4262                         + ie_len, GFP_KERNEL);
4263         if (!request) {
4264                 err = -ENOMEM;
4265                 goto out;
4266         }
4267
4268         if (n_ssids)
4269                 request->ssids = (void *)&request->channels[n_channels];
4270         request->n_ssids = n_ssids;
4271         if (ie_len) {
4272                 if (request->ssids)
4273                         request->ie = (void *)(request->ssids + n_ssids);
4274                 else
4275                         request->ie = (void *)(request->channels + n_channels);
4276         }
4277
4278         if (n_match_sets) {
4279                 if (request->ie)
4280                         request->match_sets = (void *)(request->ie + ie_len);
4281                 else if (request->ssids)
4282                         request->match_sets =
4283                                 (void *)(request->ssids + n_ssids);
4284                 else
4285                         request->match_sets =
4286                                 (void *)(request->channels + n_channels);
4287         }
4288         request->n_match_sets = n_match_sets;
4289
4290         i = 0;
4291         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4292                 /* user specified, bail out if channel not found */
4293                 nla_for_each_nested(attr,
4294                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4295                                     tmp) {
4296                         struct ieee80211_channel *chan;
4297
4298                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4299
4300                         if (!chan) {
4301                                 err = -EINVAL;
4302                                 goto out_free;
4303                         }
4304
4305                         /* ignore disabled channels */
4306                         if (chan->flags & IEEE80211_CHAN_DISABLED)
4307                                 continue;
4308
4309                         request->channels[i] = chan;
4310                         i++;
4311                 }
4312         } else {
4313                 /* all channels */
4314                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4315                         int j;
4316                         if (!wiphy->bands[band])
4317                                 continue;
4318                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4319                                 struct ieee80211_channel *chan;
4320
4321                                 chan = &wiphy->bands[band]->channels[j];
4322
4323                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
4324                                         continue;
4325
4326                                 request->channels[i] = chan;
4327                                 i++;
4328                         }
4329                 }
4330         }
4331
4332         if (!i) {
4333                 err = -EINVAL;
4334                 goto out_free;
4335         }
4336
4337         request->n_channels = i;
4338
4339         i = 0;
4340         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4341                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4342                                     tmp) {
4343                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4344                                 err = -EINVAL;
4345                                 goto out_free;
4346                         }
4347                         request->ssids[i].ssid_len = nla_len(attr);
4348                         memcpy(request->ssids[i].ssid, nla_data(attr),
4349                                nla_len(attr));
4350                         i++;
4351                 }
4352         }
4353
4354         i = 0;
4355         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4356                 nla_for_each_nested(attr,
4357                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4358                                     tmp) {
4359                         struct nlattr *ssid;
4360
4361                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4362                                   nla_data(attr), nla_len(attr),
4363                                   nl80211_match_policy);
4364                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4365                         if (ssid) {
4366                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4367                                         err = -EINVAL;
4368                                         goto out_free;
4369                                 }
4370                                 memcpy(request->match_sets[i].ssid.ssid,
4371                                        nla_data(ssid), nla_len(ssid));
4372                                 request->match_sets[i].ssid.ssid_len =
4373                                         nla_len(ssid);
4374                         }
4375                         i++;
4376                 }
4377         }
4378
4379         if (info->attrs[NL80211_ATTR_IE]) {
4380                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4381                 memcpy((void *)request->ie,
4382                        nla_data(info->attrs[NL80211_ATTR_IE]),
4383                        request->ie_len);
4384         }
4385
4386         request->dev = dev;
4387         request->wiphy = &rdev->wiphy;
4388         request->interval = interval;
4389
4390         err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4391         if (!err) {
4392                 rdev->sched_scan_req = request;
4393                 nl80211_send_sched_scan(rdev, dev,
4394                                         NL80211_CMD_START_SCHED_SCAN);
4395                 goto out;
4396         }
4397
4398 out_free:
4399         kfree(request);
4400 out:
4401         mutex_unlock(&rdev->sched_scan_mtx);
4402         return err;
4403 }
4404
4405 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4406                                    struct genl_info *info)
4407 {
4408         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4409         int err;
4410
4411         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4412             !rdev->ops->sched_scan_stop)
4413                 return -EOPNOTSUPP;
4414
4415         mutex_lock(&rdev->sched_scan_mtx);
4416         err = __cfg80211_stop_sched_scan(rdev, false);
4417         mutex_unlock(&rdev->sched_scan_mtx);
4418
4419         return err;
4420 }
4421
4422 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4423                             u32 seq, int flags,
4424                             struct cfg80211_registered_device *rdev,
4425                             struct wireless_dev *wdev,
4426                             struct cfg80211_internal_bss *intbss)
4427 {
4428         struct cfg80211_bss *res = &intbss->pub;
4429         void *hdr;
4430         struct nlattr *bss;
4431
4432         ASSERT_WDEV_LOCK(wdev);
4433
4434         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4435                              NL80211_CMD_NEW_SCAN_RESULTS);
4436         if (!hdr)
4437                 return -1;
4438
4439         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4440
4441         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4442             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4443                 goto nla_put_failure;
4444
4445         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4446         if (!bss)
4447                 goto nla_put_failure;
4448         if ((!is_zero_ether_addr(res->bssid) &&
4449              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)) ||
4450             (res->information_elements && res->len_information_elements &&
4451              nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4452                      res->len_information_elements,
4453                      res->information_elements)) ||
4454             (res->beacon_ies && res->len_beacon_ies &&
4455              res->beacon_ies != res->information_elements &&
4456              nla_put(msg, NL80211_BSS_BEACON_IES,
4457                      res->len_beacon_ies, res->beacon_ies)))
4458                 goto nla_put_failure;
4459         if (res->tsf &&
4460             nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4461                 goto nla_put_failure;
4462         if (res->beacon_interval &&
4463             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4464                 goto nla_put_failure;
4465         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4466             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4467             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4468                         jiffies_to_msecs(jiffies - intbss->ts)))
4469                 goto nla_put_failure;
4470
4471         switch (rdev->wiphy.signal_type) {
4472         case CFG80211_SIGNAL_TYPE_MBM:
4473                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4474                         goto nla_put_failure;
4475                 break;
4476         case CFG80211_SIGNAL_TYPE_UNSPEC:
4477                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4478                         goto nla_put_failure;
4479                 break;
4480         default:
4481                 break;
4482         }
4483
4484         switch (wdev->iftype) {
4485         case NL80211_IFTYPE_P2P_CLIENT:
4486         case NL80211_IFTYPE_STATION:
4487                 if (intbss == wdev->current_bss &&
4488                     nla_put_u32(msg, NL80211_BSS_STATUS,
4489                                 NL80211_BSS_STATUS_ASSOCIATED))
4490                         goto nla_put_failure;
4491                 break;
4492         case NL80211_IFTYPE_ADHOC:
4493                 if (intbss == wdev->current_bss &&
4494                     nla_put_u32(msg, NL80211_BSS_STATUS,
4495                                 NL80211_BSS_STATUS_IBSS_JOINED))
4496                         goto nla_put_failure;
4497                 break;
4498         default:
4499                 break;
4500         }
4501
4502         nla_nest_end(msg, bss);
4503
4504         return genlmsg_end(msg, hdr);
4505
4506  nla_put_failure:
4507         genlmsg_cancel(msg, hdr);
4508         return -EMSGSIZE;
4509 }
4510
4511 static int nl80211_dump_scan(struct sk_buff *skb,
4512                              struct netlink_callback *cb)
4513 {
4514         struct cfg80211_registered_device *rdev;
4515         struct net_device *dev;
4516         struct cfg80211_internal_bss *scan;
4517         struct wireless_dev *wdev;
4518         int start = cb->args[1], idx = 0;
4519         int err;
4520
4521         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4522         if (err)
4523                 return err;
4524
4525         wdev = dev->ieee80211_ptr;
4526
4527         wdev_lock(wdev);
4528         spin_lock_bh(&rdev->bss_lock);
4529         cfg80211_bss_expire(rdev);
4530
4531         cb->seq = rdev->bss_generation;
4532
4533         list_for_each_entry(scan, &rdev->bss_list, list) {
4534                 if (++idx <= start)
4535                         continue;
4536                 if (nl80211_send_bss(skb, cb,
4537                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4538                                 rdev, wdev, scan) < 0) {
4539                         idx--;
4540                         break;
4541                 }
4542         }
4543
4544         spin_unlock_bh(&rdev->bss_lock);
4545         wdev_unlock(wdev);
4546
4547         cb->args[1] = idx;
4548         nl80211_finish_netdev_dump(rdev);
4549
4550         return skb->len;
4551 }
4552
4553 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4554                                 int flags, struct net_device *dev,
4555                                 struct survey_info *survey)
4556 {
4557         void *hdr;
4558         struct nlattr *infoattr;
4559
4560         hdr = nl80211hdr_put(msg, pid, seq, flags,
4561                              NL80211_CMD_NEW_SURVEY_RESULTS);
4562         if (!hdr)
4563                 return -ENOMEM;
4564
4565         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4566                 goto nla_put_failure;
4567
4568         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4569         if (!infoattr)
4570                 goto nla_put_failure;
4571
4572         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4573                         survey->channel->center_freq))
4574                 goto nla_put_failure;
4575
4576         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4577             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4578                 goto nla_put_failure;
4579         if ((survey->filled & SURVEY_INFO_IN_USE) &&
4580             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4581                 goto nla_put_failure;
4582         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4583             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4584                         survey->channel_time))
4585                 goto nla_put_failure;
4586         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4587             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4588                         survey->channel_time_busy))
4589                 goto nla_put_failure;
4590         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4591             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4592                         survey->channel_time_ext_busy))
4593                 goto nla_put_failure;
4594         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4595             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4596                         survey->channel_time_rx))
4597                 goto nla_put_failure;
4598         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4599             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4600                         survey->channel_time_tx))
4601                 goto nla_put_failure;
4602
4603         nla_nest_end(msg, infoattr);
4604
4605         return genlmsg_end(msg, hdr);
4606
4607  nla_put_failure:
4608         genlmsg_cancel(msg, hdr);
4609         return -EMSGSIZE;
4610 }
4611
4612 static int nl80211_dump_survey(struct sk_buff *skb,
4613                         struct netlink_callback *cb)
4614 {
4615         struct survey_info survey;
4616         struct cfg80211_registered_device *dev;
4617         struct net_device *netdev;
4618         int survey_idx = cb->args[1];
4619         int res;
4620
4621         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4622         if (res)
4623                 return res;
4624
4625         if (!dev->ops->dump_survey) {
4626                 res = -EOPNOTSUPP;
4627                 goto out_err;
4628         }
4629
4630         while (1) {
4631                 struct ieee80211_channel *chan;
4632
4633                 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4634                                             &survey);
4635                 if (res == -ENOENT)
4636                         break;
4637                 if (res)
4638                         goto out_err;
4639
4640                 /* Survey without a channel doesn't make sense */
4641                 if (!survey.channel) {
4642                         res = -EINVAL;
4643                         goto out;
4644                 }
4645
4646                 chan = ieee80211_get_channel(&dev->wiphy,
4647                                              survey.channel->center_freq);
4648                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4649                         survey_idx++;
4650                         continue;
4651                 }
4652
4653                 if (nl80211_send_survey(skb,
4654                                 NETLINK_CB(cb->skb).pid,
4655                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4656                                 netdev,
4657                                 &survey) < 0)
4658                         goto out;
4659                 survey_idx++;
4660         }
4661
4662  out:
4663         cb->args[1] = survey_idx;
4664         res = skb->len;
4665  out_err:
4666         nl80211_finish_netdev_dump(dev);
4667         return res;
4668 }
4669
4670 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4671 {
4672         return auth_type <= NL80211_AUTHTYPE_MAX;
4673 }
4674
4675 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4676 {
4677         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4678                                   NL80211_WPA_VERSION_2));
4679 }
4680
4681 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4682 {
4683         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4684         struct net_device *dev = info->user_ptr[1];
4685         struct ieee80211_channel *chan;
4686         const u8 *bssid, *ssid, *ie = NULL;
4687         int err, ssid_len, ie_len = 0;
4688         enum nl80211_auth_type auth_type;
4689         struct key_parse key;
4690         bool local_state_change;
4691
4692         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4693                 return -EINVAL;
4694
4695         if (!info->attrs[NL80211_ATTR_MAC])
4696                 return -EINVAL;
4697
4698         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4699                 return -EINVAL;
4700
4701         if (!info->attrs[NL80211_ATTR_SSID])
4702                 return -EINVAL;
4703
4704         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4705                 return -EINVAL;
4706
4707         err = nl80211_parse_key(info, &key);
4708         if (err)
4709                 return err;
4710
4711         if (key.idx >= 0) {
4712                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4713                         return -EINVAL;
4714                 if (!key.p.key || !key.p.key_len)
4715                         return -EINVAL;
4716                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4717                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4718                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4719                      key.p.key_len != WLAN_KEY_LEN_WEP104))
4720                         return -EINVAL;
4721                 if (key.idx > 4)
4722                         return -EINVAL;
4723         } else {
4724                 key.p.key_len = 0;
4725                 key.p.key = NULL;
4726         }
4727
4728         if (key.idx >= 0) {
4729                 int i;
4730                 bool ok = false;
4731                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4732                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4733                                 ok = true;
4734                                 break;
4735                         }
4736                 }
4737                 if (!ok)
4738                         return -EINVAL;
4739         }
4740
4741         if (!rdev->ops->auth)
4742                 return -EOPNOTSUPP;
4743
4744         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4745             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4746                 return -EOPNOTSUPP;
4747
4748         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4749         chan = ieee80211_get_channel(&rdev->wiphy,
4750                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4751         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4752                 return -EINVAL;
4753
4754         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4755         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4756
4757         if (info->attrs[NL80211_ATTR_IE]) {
4758                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4759                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4760         }
4761
4762         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4763         if (!nl80211_valid_auth_type(auth_type))
4764                 return -EINVAL;
4765
4766         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4767
4768         /*
4769          * Since we no longer track auth state, ignore
4770          * requests to only change local state.
4771          */
4772         if (local_state_change)
4773                 return 0;
4774
4775         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4776                                   ssid, ssid_len, ie, ie_len,
4777                                   key.p.key, key.p.key_len, key.idx);
4778 }
4779
4780 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4781                                    struct genl_info *info,
4782                                    struct cfg80211_crypto_settings *settings,
4783                                    int cipher_limit)
4784 {
4785         memset(settings, 0, sizeof(*settings));
4786
4787         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4788
4789         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4790                 u16 proto;
4791                 proto = nla_get_u16(
4792                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4793                 settings->control_port_ethertype = cpu_to_be16(proto);
4794                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4795                     proto != ETH_P_PAE)
4796                         return -EINVAL;
4797                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4798                         settings->control_port_no_encrypt = true;
4799         } else
4800                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4801
4802         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4803                 void *data;
4804                 int len, i;
4805
4806                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4807                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4808                 settings->n_ciphers_pairwise = len / sizeof(u32);
4809
4810                 if (len % sizeof(u32))
4811                         return -EINVAL;
4812
4813                 if (settings->n_ciphers_pairwise > cipher_limit)
4814                         return -EINVAL;
4815
4816                 memcpy(settings->ciphers_pairwise, data, len);
4817
4818                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4819                         if (!cfg80211_supported_cipher_suite(
4820                                         &rdev->wiphy,
4821                                         settings->ciphers_pairwise[i]))
4822                                 return -EINVAL;
4823         }
4824
4825         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4826                 settings->cipher_group =
4827                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4828                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4829                                                      settings->cipher_group))
4830                         return -EINVAL;
4831         }
4832
4833         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4834                 settings->wpa_versions =
4835                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4836                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4837                         return -EINVAL;
4838         }
4839
4840         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4841                 void *data;
4842                 int len;
4843
4844                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4845                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4846                 settings->n_akm_suites = len / sizeof(u32);
4847
4848                 if (len % sizeof(u32))
4849                         return -EINVAL;
4850
4851                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4852                         return -EINVAL;
4853
4854                 memcpy(settings->akm_suites, data, len);
4855         }
4856
4857         return 0;
4858 }
4859
4860 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4861 {
4862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4863         struct net_device *dev = info->user_ptr[1];
4864         struct cfg80211_crypto_settings crypto;
4865         struct ieee80211_channel *chan;
4866         const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4867         int err, ssid_len, ie_len = 0;
4868         bool use_mfp = false;
4869         u32 flags = 0;
4870         struct ieee80211_ht_cap *ht_capa = NULL;
4871         struct ieee80211_ht_cap *ht_capa_mask = NULL;
4872
4873         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4874                 return -EINVAL;
4875
4876         if (!info->attrs[NL80211_ATTR_MAC] ||
4877             !info->attrs[NL80211_ATTR_SSID] ||
4878             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4879                 return -EINVAL;
4880
4881         if (!rdev->ops->assoc)
4882                 return -EOPNOTSUPP;
4883
4884         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4885             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4886                 return -EOPNOTSUPP;
4887
4888         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4889
4890         chan = ieee80211_get_channel(&rdev->wiphy,
4891                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4892         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4893                 return -EINVAL;
4894
4895         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4896         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4897
4898         if (info->attrs[NL80211_ATTR_IE]) {
4899                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4900                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4901         }
4902
4903         if (info->attrs[NL80211_ATTR_USE_MFP]) {
4904                 enum nl80211_mfp mfp =
4905                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4906                 if (mfp == NL80211_MFP_REQUIRED)
4907                         use_mfp = true;
4908                 else if (mfp != NL80211_MFP_NO)
4909                         return -EINVAL;
4910         }
4911
4912         if (info->attrs[NL80211_ATTR_PREV_BSSID])
4913                 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4914
4915         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4916                 flags |= ASSOC_REQ_DISABLE_HT;
4917
4918         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4919                 ht_capa_mask =
4920                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4921
4922         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4923                 if (!ht_capa_mask)
4924                         return -EINVAL;
4925                 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4926         }
4927
4928         err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4929         if (!err)
4930                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4931                                           ssid, ssid_len, ie, ie_len, use_mfp,
4932                                           &crypto, flags, ht_capa,
4933                                           ht_capa_mask);
4934
4935         return err;
4936 }
4937
4938 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4939 {
4940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4941         struct net_device *dev = info->user_ptr[1];
4942         const u8 *ie = NULL, *bssid;
4943         int ie_len = 0;
4944         u16 reason_code;
4945         bool local_state_change;
4946
4947         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4948                 return -EINVAL;
4949
4950         if (!info->attrs[NL80211_ATTR_MAC])
4951                 return -EINVAL;
4952
4953         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4954                 return -EINVAL;
4955
4956         if (!rdev->ops->deauth)
4957                 return -EOPNOTSUPP;
4958
4959         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4960             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4961                 return -EOPNOTSUPP;
4962
4963         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4964
4965         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4966         if (reason_code == 0) {
4967                 /* Reason Code 0 is reserved */
4968                 return -EINVAL;
4969         }
4970
4971         if (info->attrs[NL80211_ATTR_IE]) {
4972                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4973                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4974         }
4975
4976         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4977
4978         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4979                                     local_state_change);
4980 }
4981
4982 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4983 {
4984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4985         struct net_device *dev = info->user_ptr[1];
4986         const u8 *ie = NULL, *bssid;
4987         int ie_len = 0;
4988         u16 reason_code;
4989         bool local_state_change;
4990
4991         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4992                 return -EINVAL;
4993
4994         if (!info->attrs[NL80211_ATTR_MAC])
4995                 return -EINVAL;
4996
4997         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4998                 return -EINVAL;
4999
5000         if (!rdev->ops->disassoc)
5001                 return -EOPNOTSUPP;
5002
5003         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5004             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5005                 return -EOPNOTSUPP;
5006
5007         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5008
5009         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5010         if (reason_code == 0) {
5011                 /* Reason Code 0 is reserved */
5012                 return -EINVAL;
5013         }
5014
5015         if (info->attrs[NL80211_ATTR_IE]) {
5016                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5017                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5018         }
5019
5020         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5021
5022         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5023                                       local_state_change);
5024 }
5025
5026 static bool
5027 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5028                          int mcast_rate[IEEE80211_NUM_BANDS],
5029                          int rateval)
5030 {
5031         struct wiphy *wiphy = &rdev->wiphy;
5032         bool found = false;
5033         int band, i;
5034
5035         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5036                 struct ieee80211_supported_band *sband;
5037
5038                 sband = wiphy->bands[band];
5039                 if (!sband)
5040                         continue;
5041
5042                 for (i = 0; i < sband->n_bitrates; i++) {
5043                         if (sband->bitrates[i].bitrate == rateval) {
5044                                 mcast_rate[band] = i + 1;
5045                                 found = true;
5046                                 break;
5047                         }
5048                 }
5049         }
5050
5051         return found;
5052 }
5053
5054 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5055 {
5056         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5057         struct net_device *dev = info->user_ptr[1];
5058         struct cfg80211_ibss_params ibss;
5059         struct wiphy *wiphy;
5060         struct cfg80211_cached_keys *connkeys = NULL;
5061         int err;
5062
5063         memset(&ibss, 0, sizeof(ibss));
5064
5065         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5066                 return -EINVAL;
5067
5068         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5069             !info->attrs[NL80211_ATTR_SSID] ||
5070             !nla_len(info->attrs[NL80211_ATTR_SSID]))
5071                 return -EINVAL;
5072
5073         ibss.beacon_interval = 100;
5074
5075         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5076                 ibss.beacon_interval =
5077                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5078                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5079                         return -EINVAL;
5080         }
5081
5082         if (!rdev->ops->join_ibss)
5083                 return -EOPNOTSUPP;
5084
5085         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5086                 return -EOPNOTSUPP;
5087
5088         wiphy = &rdev->wiphy;
5089
5090         if (info->attrs[NL80211_ATTR_MAC]) {
5091                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5092
5093                 if (!is_valid_ether_addr(ibss.bssid))
5094                         return -EINVAL;
5095         }
5096         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5097         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5098
5099         if (info->attrs[NL80211_ATTR_IE]) {
5100                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5101                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5102         }
5103
5104         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5105                 enum nl80211_channel_type channel_type;
5106
5107                 if (!nl80211_valid_channel_type(info, &channel_type))
5108                         return -EINVAL;
5109
5110                 if (channel_type != NL80211_CHAN_NO_HT &&
5111                     !(wiphy->features & NL80211_FEATURE_HT_IBSS))
5112                         return -EINVAL;
5113
5114                 ibss.channel_type = channel_type;
5115         } else {
5116                 ibss.channel_type = NL80211_CHAN_NO_HT;
5117         }
5118
5119         ibss.channel = rdev_freq_to_chan(rdev,
5120                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
5121                 ibss.channel_type);
5122         if (!ibss.channel ||
5123             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
5124             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
5125                 return -EINVAL;
5126
5127         /* Both channels should be able to initiate communication */
5128         if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
5129              ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
5130             !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
5131                                           ibss.channel_type))
5132                 return -EINVAL;
5133
5134         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5135         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5136
5137         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5138                 u8 *rates =
5139                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5140                 int n_rates =
5141                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5142                 struct ieee80211_supported_band *sband =
5143                         wiphy->bands[ibss.channel->band];
5144
5145                 err = ieee80211_get_ratemask(sband, rates, n_rates,
5146                                              &ibss.basic_rates);
5147                 if (err)
5148                         return err;
5149         }
5150
5151         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5152             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5153                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5154                 return -EINVAL;
5155
5156         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5157                 connkeys = nl80211_parse_connkeys(rdev,
5158                                         info->attrs[NL80211_ATTR_KEYS]);
5159                 if (IS_ERR(connkeys))
5160                         return PTR_ERR(connkeys);
5161         }
5162
5163         ibss.control_port =
5164                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5165
5166         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5167         if (err)
5168                 kfree(connkeys);
5169         return err;
5170 }
5171
5172 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5173 {
5174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5175         struct net_device *dev = info->user_ptr[1];
5176
5177         if (!rdev->ops->leave_ibss)
5178                 return -EOPNOTSUPP;
5179
5180         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5181                 return -EOPNOTSUPP;
5182
5183         return cfg80211_leave_ibss(rdev, dev, false);
5184 }
5185
5186 #ifdef CONFIG_NL80211_TESTMODE
5187 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5188         .name = "testmode",
5189 };
5190
5191 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5192 {
5193         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5194         int err;
5195
5196         if (!info->attrs[NL80211_ATTR_TESTDATA])
5197                 return -EINVAL;
5198
5199         err = -EOPNOTSUPP;
5200         if (rdev->ops->testmode_cmd) {
5201                 rdev->testmode_info = info;
5202                 err = rdev->ops->testmode_cmd(&rdev->wiphy,
5203                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5204                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5205                 rdev->testmode_info = NULL;
5206         }
5207
5208         return err;
5209 }
5210
5211 static int nl80211_testmode_dump(struct sk_buff *skb,
5212                                  struct netlink_callback *cb)
5213 {
5214         struct cfg80211_registered_device *rdev;
5215         int err;
5216         long phy_idx;
5217         void *data = NULL;
5218         int data_len = 0;
5219
5220         if (cb->args[0]) {
5221                 /*
5222                  * 0 is a valid index, but not valid for args[0],
5223                  * so we need to offset by 1.
5224                  */
5225                 phy_idx = cb->args[0] - 1;
5226         } else {
5227                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5228                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
5229                                   nl80211_policy);
5230                 if (err)
5231                         return err;
5232                 if (nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) {
5233                         phy_idx = nla_get_u32(
5234                                 nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
5235                 } else {
5236                         struct net_device *netdev;
5237
5238                         err = get_rdev_dev_by_ifindex(sock_net(skb->sk),
5239                                                       nl80211_fam.attrbuf,
5240                                                       &rdev, &netdev);
5241                         if (err)
5242                                 return err;
5243                         dev_put(netdev);
5244                         phy_idx = rdev->wiphy_idx;
5245                         cfg80211_unlock_rdev(rdev);
5246                 }
5247                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5248                         cb->args[1] =
5249                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5250         }
5251
5252         if (cb->args[1]) {
5253                 data = nla_data((void *)cb->args[1]);
5254                 data_len = nla_len((void *)cb->args[1]);
5255         }
5256
5257         mutex_lock(&cfg80211_mutex);
5258         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5259         if (!rdev) {
5260                 mutex_unlock(&cfg80211_mutex);
5261                 return -ENOENT;
5262         }
5263         cfg80211_lock_rdev(rdev);
5264         mutex_unlock(&cfg80211_mutex);
5265
5266         if (!rdev->ops->testmode_dump) {
5267                 err = -EOPNOTSUPP;
5268                 goto out_err;
5269         }
5270
5271         while (1) {
5272                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
5273                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
5274                                            NL80211_CMD_TESTMODE);
5275                 struct nlattr *tmdata;
5276
5277                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5278                         genlmsg_cancel(skb, hdr);
5279                         break;
5280                 }
5281
5282                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5283                 if (!tmdata) {
5284                         genlmsg_cancel(skb, hdr);
5285                         break;
5286                 }
5287                 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
5288                                                data, data_len);
5289                 nla_nest_end(skb, tmdata);
5290
5291                 if (err == -ENOBUFS || err == -ENOENT) {
5292                         genlmsg_cancel(skb, hdr);
5293                         break;
5294                 } else if (err) {
5295                         genlmsg_cancel(skb, hdr);
5296                         goto out_err;
5297                 }
5298
5299                 genlmsg_end(skb, hdr);
5300         }
5301
5302         err = skb->len;
5303         /* see above */
5304         cb->args[0] = phy_idx + 1;
5305  out_err:
5306         cfg80211_unlock_rdev(rdev);
5307         return err;
5308 }
5309
5310 static struct sk_buff *
5311 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5312                               int approxlen, u32 pid, u32 seq, gfp_t gfp)
5313 {
5314         struct sk_buff *skb;
5315         void *hdr;
5316         struct nlattr *data;
5317
5318         skb = nlmsg_new(approxlen + 100, gfp);
5319         if (!skb)
5320                 return NULL;
5321
5322         hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
5323         if (!hdr) {
5324                 kfree_skb(skb);
5325                 return NULL;
5326         }
5327
5328         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5329                 goto nla_put_failure;
5330         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5331
5332         ((void **)skb->cb)[0] = rdev;
5333         ((void **)skb->cb)[1] = hdr;
5334         ((void **)skb->cb)[2] = data;
5335
5336         return skb;
5337
5338  nla_put_failure:
5339         kfree_skb(skb);
5340         return NULL;
5341 }
5342
5343 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5344                                                   int approxlen)
5345 {
5346         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5347
5348         if (WARN_ON(!rdev->testmode_info))
5349                 return NULL;
5350
5351         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5352                                 rdev->testmode_info->snd_pid,
5353                                 rdev->testmode_info->snd_seq,
5354                                 GFP_KERNEL);
5355 }
5356 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5357
5358 int cfg80211_testmode_reply(struct sk_buff *skb)
5359 {
5360         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5361         void *hdr = ((void **)skb->cb)[1];
5362         struct nlattr *data = ((void **)skb->cb)[2];
5363
5364         if (WARN_ON(!rdev->testmode_info)) {
5365                 kfree_skb(skb);
5366                 return -EINVAL;
5367         }
5368
5369         nla_nest_end(skb, data);
5370         genlmsg_end(skb, hdr);
5371         return genlmsg_reply(skb, rdev->testmode_info);
5372 }
5373 EXPORT_SYMBOL(cfg80211_testmode_reply);
5374
5375 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5376                                                   int approxlen, gfp_t gfp)
5377 {
5378         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5379
5380         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5381 }
5382 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5383
5384 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5385 {
5386         void *hdr = ((void **)skb->cb)[1];
5387         struct nlattr *data = ((void **)skb->cb)[2];
5388
5389         nla_nest_end(skb, data);
5390         genlmsg_end(skb, hdr);
5391         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5392 }
5393 EXPORT_SYMBOL(cfg80211_testmode_event);
5394 #endif
5395
5396 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5397 {
5398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5399         struct net_device *dev = info->user_ptr[1];
5400         struct cfg80211_connect_params connect;
5401         struct wiphy *wiphy;
5402         struct cfg80211_cached_keys *connkeys = NULL;
5403         int err;
5404
5405         memset(&connect, 0, sizeof(connect));
5406
5407         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5408                 return -EINVAL;
5409
5410         if (!info->attrs[NL80211_ATTR_SSID] ||
5411             !nla_len(info->attrs[NL80211_ATTR_SSID]))
5412                 return -EINVAL;
5413
5414         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5415                 connect.auth_type =
5416                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5417                 if (!nl80211_valid_auth_type(connect.auth_type))
5418                         return -EINVAL;
5419         } else
5420                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5421
5422         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5423
5424         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5425                                       NL80211_MAX_NR_CIPHER_SUITES);
5426         if (err)
5427                 return err;
5428
5429         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5430             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5431                 return -EOPNOTSUPP;
5432
5433         wiphy = &rdev->wiphy;
5434
5435         connect.bg_scan_period = -1;
5436         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5437                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5438                 connect.bg_scan_period =
5439                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5440         }
5441
5442         if (info->attrs[NL80211_ATTR_MAC])
5443                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5444         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5445         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5446
5447         if (info->attrs[NL80211_ATTR_IE]) {
5448                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5449                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5450         }
5451
5452         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5453                 connect.channel =
5454                         ieee80211_get_channel(wiphy,
5455                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5456                 if (!connect.channel ||
5457                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
5458                         return -EINVAL;
5459         }
5460
5461         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5462                 connkeys = nl80211_parse_connkeys(rdev,
5463                                         info->attrs[NL80211_ATTR_KEYS]);
5464                 if (IS_ERR(connkeys))
5465                         return PTR_ERR(connkeys);
5466         }
5467
5468         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5469                 connect.flags |= ASSOC_REQ_DISABLE_HT;
5470
5471         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5472                 memcpy(&connect.ht_capa_mask,
5473                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5474                        sizeof(connect.ht_capa_mask));
5475
5476         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5477                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5478                         return -EINVAL;
5479                 memcpy(&connect.ht_capa,
5480                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5481                        sizeof(connect.ht_capa));
5482         }
5483
5484         err = cfg80211_connect(rdev, dev, &connect, connkeys);
5485         if (err)
5486                 kfree(connkeys);
5487         return err;
5488 }
5489
5490 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5491 {
5492         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5493         struct net_device *dev = info->user_ptr[1];
5494         u16 reason;
5495
5496         if (!info->attrs[NL80211_ATTR_REASON_CODE])
5497                 reason = WLAN_REASON_DEAUTH_LEAVING;
5498         else
5499                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5500
5501         if (reason == 0)
5502                 return -EINVAL;
5503
5504         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5505             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5506                 return -EOPNOTSUPP;
5507
5508         return cfg80211_disconnect(rdev, dev, reason, true);
5509 }
5510
5511 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5512 {
5513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5514         struct net *net;
5515         int err;
5516         u32 pid;
5517
5518         if (!info->attrs[NL80211_ATTR_PID])
5519                 return -EINVAL;
5520
5521         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5522
5523         net = get_net_ns_by_pid(pid);
5524         if (IS_ERR(net))
5525                 return PTR_ERR(net);
5526
5527         err = 0;
5528
5529         /* check if anything to do */
5530         if (!net_eq(wiphy_net(&rdev->wiphy), net))
5531                 err = cfg80211_switch_netns(rdev, net);
5532
5533         put_net(net);
5534         return err;
5535 }
5536
5537 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5538 {
5539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5540         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5541                         struct cfg80211_pmksa *pmksa) = NULL;
5542         struct net_device *dev = info->user_ptr[1];
5543         struct cfg80211_pmksa pmksa;
5544
5545         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5546
5547         if (!info->attrs[NL80211_ATTR_MAC])
5548                 return -EINVAL;
5549
5550         if (!info->attrs[NL80211_ATTR_PMKID])
5551                 return -EINVAL;
5552
5553         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5554         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5555
5556         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5557             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5558                 return -EOPNOTSUPP;
5559
5560         switch (info->genlhdr->cmd) {
5561         case NL80211_CMD_SET_PMKSA:
5562                 rdev_ops = rdev->ops->set_pmksa;
5563                 break;
5564         case NL80211_CMD_DEL_PMKSA:
5565                 rdev_ops = rdev->ops->del_pmksa;
5566                 break;
5567         default:
5568                 WARN_ON(1);
5569                 break;
5570         }
5571
5572         if (!rdev_ops)
5573                 return -EOPNOTSUPP;
5574
5575         return rdev_ops(&rdev->wiphy, dev, &pmksa);
5576 }
5577
5578 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5579 {
5580         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5581         struct net_device *dev = info->user_ptr[1];
5582
5583         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5584             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5585                 return -EOPNOTSUPP;
5586
5587         if (!rdev->ops->flush_pmksa)
5588                 return -EOPNOTSUPP;
5589
5590         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5591 }
5592
5593 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5594 {
5595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5596         struct net_device *dev = info->user_ptr[1];
5597         u8 action_code, dialog_token;
5598         u16 status_code;
5599         u8 *peer;
5600
5601         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5602             !rdev->ops->tdls_mgmt)
5603                 return -EOPNOTSUPP;
5604
5605         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5606             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5607             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5608             !info->attrs[NL80211_ATTR_IE] ||
5609             !info->attrs[NL80211_ATTR_MAC])
5610                 return -EINVAL;
5611
5612         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5613         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5614         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5615         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5616
5617         return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5618                                     dialog_token, status_code,
5619                                     nla_data(info->attrs[NL80211_ATTR_IE]),
5620                                     nla_len(info->attrs[NL80211_ATTR_IE]));
5621 }
5622
5623 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5624 {
5625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5626         struct net_device *dev = info->user_ptr[1];
5627         enum nl80211_tdls_operation operation;
5628         u8 *peer;
5629
5630         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5631             !rdev->ops->tdls_oper)
5632                 return -EOPNOTSUPP;
5633
5634         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5635             !info->attrs[NL80211_ATTR_MAC])
5636                 return -EINVAL;
5637
5638         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5639         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5640
5641         return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5642 }
5643
5644 static int nl80211_remain_on_channel(struct sk_buff *skb,
5645                                      struct genl_info *info)
5646 {
5647         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5648         struct net_device *dev = info->user_ptr[1];
5649         struct ieee80211_channel *chan;
5650         struct sk_buff *msg;
5651         void *hdr;
5652         u64 cookie;
5653         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5654         u32 freq, duration;
5655         int err;
5656
5657         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5658             !info->attrs[NL80211_ATTR_DURATION])
5659                 return -EINVAL;
5660
5661         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5662
5663         if (!rdev->ops->remain_on_channel ||
5664             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5665                 return -EOPNOTSUPP;
5666
5667         /*
5668          * We should be on that channel for at least a minimum amount of
5669          * time (10ms) but no longer than the driver supports.
5670          */
5671         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5672             duration > rdev->wiphy.max_remain_on_channel_duration)
5673                 return -EINVAL;
5674
5675         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
5676             !nl80211_valid_channel_type(info, &channel_type))
5677                 return -EINVAL;
5678
5679         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5680         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5681         if (chan == NULL)
5682                 return -EINVAL;
5683
5684         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5685         if (!msg)
5686                 return -ENOMEM;
5687
5688         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5689                              NL80211_CMD_REMAIN_ON_CHANNEL);
5690
5691         if (IS_ERR(hdr)) {
5692                 err = PTR_ERR(hdr);
5693                 goto free_msg;
5694         }
5695
5696         err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5697                                            channel_type, duration, &cookie);
5698
5699         if (err)
5700                 goto free_msg;
5701
5702         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5703                 goto nla_put_failure;
5704
5705         genlmsg_end(msg, hdr);
5706
5707         return genlmsg_reply(msg, info);
5708
5709  nla_put_failure:
5710         err = -ENOBUFS;
5711  free_msg:
5712         nlmsg_free(msg);
5713         return err;
5714 }
5715
5716 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5717                                             struct genl_info *info)
5718 {
5719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5720         struct net_device *dev = info->user_ptr[1];
5721         u64 cookie;
5722
5723         if (!info->attrs[NL80211_ATTR_COOKIE])
5724                 return -EINVAL;
5725
5726         if (!rdev->ops->cancel_remain_on_channel)
5727                 return -EOPNOTSUPP;
5728
5729         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5730
5731         return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5732 }
5733
5734 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5735                            u8 *rates, u8 rates_len)
5736 {
5737         u8 i;
5738         u32 mask = 0;
5739
5740         for (i = 0; i < rates_len; i++) {
5741                 int rate = (rates[i] & 0x7f) * 5;
5742                 int ridx;
5743                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5744                         struct ieee80211_rate *srate =
5745                                 &sband->bitrates[ridx];
5746                         if (rate == srate->bitrate) {
5747                                 mask |= 1 << ridx;
5748                                 break;
5749                         }
5750                 }
5751                 if (ridx == sband->n_bitrates)
5752                         return 0; /* rate not found */
5753         }
5754
5755         return mask;
5756 }
5757
5758 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5759                                u8 *rates, u8 rates_len,
5760                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5761 {
5762         u8 i;
5763
5764         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5765
5766         for (i = 0; i < rates_len; i++) {
5767                 int ridx, rbit;
5768
5769                 ridx = rates[i] / 8;
5770                 rbit = BIT(rates[i] % 8);
5771
5772                 /* check validity */
5773                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5774                         return false;
5775
5776                 /* check availability */
5777                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5778                         mcs[ridx] |= rbit;
5779                 else
5780                         return false;
5781         }
5782
5783         return true;
5784 }
5785
5786 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5787         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5788                                     .len = NL80211_MAX_SUPP_RATES },
5789         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
5790                                  .len = NL80211_MAX_SUPP_HT_RATES },
5791 };
5792
5793 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5794                                        struct genl_info *info)
5795 {
5796         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5798         struct cfg80211_bitrate_mask mask;
5799         int rem, i;
5800         struct net_device *dev = info->user_ptr[1];
5801         struct nlattr *tx_rates;
5802         struct ieee80211_supported_band *sband;
5803
5804         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5805                 return -EINVAL;
5806
5807         if (!rdev->ops->set_bitrate_mask)
5808                 return -EOPNOTSUPP;
5809
5810         memset(&mask, 0, sizeof(mask));
5811         /* Default to all rates enabled */
5812         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5813                 sband = rdev->wiphy.bands[i];
5814                 mask.control[i].legacy =
5815                         sband ? (1 << sband->n_bitrates) - 1 : 0;
5816                 if (sband)
5817                         memcpy(mask.control[i].mcs,
5818                                sband->ht_cap.mcs.rx_mask,
5819                                sizeof(mask.control[i].mcs));
5820                 else
5821                         memset(mask.control[i].mcs, 0,
5822                                sizeof(mask.control[i].mcs));
5823         }
5824
5825         /*
5826          * The nested attribute uses enum nl80211_band as the index. This maps
5827          * directly to the enum ieee80211_band values used in cfg80211.
5828          */
5829         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5830         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5831         {
5832                 enum ieee80211_band band = nla_type(tx_rates);
5833                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5834                         return -EINVAL;
5835                 sband = rdev->wiphy.bands[band];
5836                 if (sband == NULL)
5837                         return -EINVAL;
5838                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5839                           nla_len(tx_rates), nl80211_txattr_policy);
5840                 if (tb[NL80211_TXRATE_LEGACY]) {
5841                         mask.control[band].legacy = rateset_to_mask(
5842                                 sband,
5843                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5844                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5845                         if ((mask.control[band].legacy == 0) &&
5846                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5847                                 return -EINVAL;
5848                 }
5849                 if (tb[NL80211_TXRATE_MCS]) {
5850                         if (!ht_rateset_to_mask(
5851                                         sband,
5852                                         nla_data(tb[NL80211_TXRATE_MCS]),
5853                                         nla_len(tb[NL80211_TXRATE_MCS]),
5854                                         mask.control[band].mcs))
5855                                 return -EINVAL;
5856                 }
5857
5858                 if (mask.control[band].legacy == 0) {
5859                         /* don't allow empty legacy rates if HT
5860                          * is not even supported. */
5861                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
5862                                 return -EINVAL;
5863
5864                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5865                                 if (mask.control[band].mcs[i])
5866                                         break;
5867
5868                         /* legacy and mcs rates may not be both empty */
5869                         if (i == IEEE80211_HT_MCS_MASK_LEN)
5870                                 return -EINVAL;
5871                 }
5872         }
5873
5874         return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5875 }
5876
5877 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5878 {
5879         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5880         struct net_device *dev = info->user_ptr[1];
5881         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5882
5883         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5884                 return -EINVAL;
5885
5886         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5887                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5888
5889         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5890             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5891             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5892             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5893             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5894             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5895             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5896                 return -EOPNOTSUPP;
5897
5898         /* not much point in registering if we can't reply */
5899         if (!rdev->ops->mgmt_tx)
5900                 return -EOPNOTSUPP;
5901
5902         return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5903                         frame_type,
5904                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5905                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5906 }
5907
5908 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5909 {
5910         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5911         struct net_device *dev = info->user_ptr[1];
5912         struct ieee80211_channel *chan;
5913         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5914         bool channel_type_valid = false;
5915         u32 freq;
5916         int err;
5917         void *hdr = NULL;
5918         u64 cookie;
5919         struct sk_buff *msg = NULL;
5920         unsigned int wait = 0;
5921         bool offchan, no_cck, dont_wait_for_ack;
5922
5923         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5924
5925         if (!info->attrs[NL80211_ATTR_FRAME] ||
5926             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5927                 return -EINVAL;
5928
5929         if (!rdev->ops->mgmt_tx)
5930                 return -EOPNOTSUPP;
5931
5932         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5933             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5934             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5935             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5936             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5937             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5938             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5939                 return -EOPNOTSUPP;
5940
5941         if (info->attrs[NL80211_ATTR_DURATION]) {
5942                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5943                         return -EINVAL;
5944                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5945
5946                 /*
5947                  * We should wait on the channel for at least a minimum amount
5948                  * of time (10ms) but no longer than the driver supports.
5949                  */
5950                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5951                     wait > rdev->wiphy.max_remain_on_channel_duration)
5952                         return -EINVAL;
5953
5954         }
5955
5956         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5957                 if (!nl80211_valid_channel_type(info, &channel_type))
5958                         return -EINVAL;
5959                 channel_type_valid = true;
5960         }
5961
5962         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5963
5964         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5965                 return -EINVAL;
5966
5967         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5968
5969         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5970         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5971         if (chan == NULL)
5972                 return -EINVAL;
5973
5974         if (!dont_wait_for_ack) {
5975                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5976                 if (!msg)
5977                         return -ENOMEM;
5978
5979                 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5980                                      NL80211_CMD_FRAME);
5981
5982                 if (IS_ERR(hdr)) {
5983                         err = PTR_ERR(hdr);
5984                         goto free_msg;
5985                 }
5986         }
5987
5988         err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5989                                     channel_type_valid, wait,
5990                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
5991                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
5992                                     no_cck, dont_wait_for_ack, &cookie);
5993         if (err)
5994                 goto free_msg;
5995
5996         if (msg) {
5997                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5998                         goto nla_put_failure;
5999
6000                 genlmsg_end(msg, hdr);
6001                 return genlmsg_reply(msg, info);
6002         }
6003
6004         return 0;
6005
6006  nla_put_failure:
6007         err = -ENOBUFS;
6008  free_msg:
6009         nlmsg_free(msg);
6010         return err;
6011 }
6012
6013 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6014 {
6015         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6016         struct net_device *dev = info->user_ptr[1];
6017         u64 cookie;
6018
6019         if (!info->attrs[NL80211_ATTR_COOKIE])
6020                 return -EINVAL;
6021
6022         if (!rdev->ops->mgmt_tx_cancel_wait)
6023                 return -EOPNOTSUPP;
6024
6025         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6026             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6027             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
6028             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6029             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6030             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6031                 return -EOPNOTSUPP;
6032
6033         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6034
6035         return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
6036 }
6037
6038 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6039 {
6040         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6041         struct wireless_dev *wdev;
6042         struct net_device *dev = info->user_ptr[1];
6043         u8 ps_state;
6044         bool state;
6045         int err;
6046
6047         if (!info->attrs[NL80211_ATTR_PS_STATE])
6048                 return -EINVAL;
6049
6050         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6051
6052         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6053                 return -EINVAL;
6054
6055         wdev = dev->ieee80211_ptr;
6056
6057         if (!rdev->ops->set_power_mgmt)
6058                 return -EOPNOTSUPP;
6059
6060         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6061
6062         if (state == wdev->ps)
6063                 return 0;
6064
6065         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
6066                                         wdev->ps_timeout);
6067         if (!err)
6068                 wdev->ps = state;
6069         return err;
6070 }
6071
6072 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6073 {
6074         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6075         enum nl80211_ps_state ps_state;
6076         struct wireless_dev *wdev;
6077         struct net_device *dev = info->user_ptr[1];
6078         struct sk_buff *msg;
6079         void *hdr;
6080         int err;
6081
6082         wdev = dev->ieee80211_ptr;
6083
6084         if (!rdev->ops->set_power_mgmt)
6085                 return -EOPNOTSUPP;
6086
6087         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6088         if (!msg)
6089                 return -ENOMEM;
6090
6091         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6092                              NL80211_CMD_GET_POWER_SAVE);
6093         if (!hdr) {
6094                 err = -ENOBUFS;
6095                 goto free_msg;
6096         }
6097
6098         if (wdev->ps)
6099                 ps_state = NL80211_PS_ENABLED;
6100         else
6101                 ps_state = NL80211_PS_DISABLED;
6102
6103         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6104                 goto nla_put_failure;
6105
6106         genlmsg_end(msg, hdr);
6107         return genlmsg_reply(msg, info);
6108
6109  nla_put_failure:
6110         err = -ENOBUFS;
6111  free_msg:
6112         nlmsg_free(msg);
6113         return err;
6114 }
6115
6116 static struct nla_policy
6117 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6118         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6119         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6120         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6121 };
6122
6123 static int nl80211_set_cqm_rssi(struct genl_info *info,
6124                                 s32 threshold, u32 hysteresis)
6125 {
6126         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6127         struct wireless_dev *wdev;
6128         struct net_device *dev = info->user_ptr[1];
6129
6130         if (threshold > 0)
6131                 return -EINVAL;
6132
6133         wdev = dev->ieee80211_ptr;
6134
6135         if (!rdev->ops->set_cqm_rssi_config)
6136                 return -EOPNOTSUPP;
6137
6138         if (wdev->iftype != NL80211_IFTYPE_STATION &&
6139             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6140                 return -EOPNOTSUPP;
6141
6142         return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
6143                                               threshold, hysteresis);
6144 }
6145
6146 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6147 {
6148         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6149         struct nlattr *cqm;
6150         int err;
6151
6152         cqm = info->attrs[NL80211_ATTR_CQM];
6153         if (!cqm) {
6154                 err = -EINVAL;
6155                 goto out;
6156         }
6157
6158         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6159                                nl80211_attr_cqm_policy);
6160         if (err)
6161                 goto out;
6162
6163         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6164             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6165                 s32 threshold;
6166                 u32 hysteresis;
6167                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6168                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6169                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6170         } else
6171                 err = -EINVAL;
6172
6173 out:
6174         return err;
6175 }
6176
6177 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6178 {
6179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6180         struct net_device *dev = info->user_ptr[1];
6181         struct mesh_config cfg;
6182         struct mesh_setup setup;
6183         int err;
6184
6185         /* start with default */
6186         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6187         memcpy(&setup, &default_mesh_setup, sizeof(setup));
6188
6189         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6190                 /* and parse parameters if given */
6191                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6192                 if (err)
6193                         return err;
6194         }
6195
6196         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6197             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6198                 return -EINVAL;
6199
6200         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6201         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6202
6203         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6204             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6205                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6206                         return -EINVAL;
6207
6208         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6209                 /* parse additional setup parameters if given */
6210                 err = nl80211_parse_mesh_setup(info, &setup);
6211                 if (err)
6212                         return err;
6213         }
6214
6215         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6216                 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6217
6218                 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
6219                     !nl80211_valid_channel_type(info, &channel_type))
6220                         return -EINVAL;
6221
6222                 setup.channel = rdev_freq_to_chan(rdev,
6223                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
6224                         channel_type);
6225                 if (!setup.channel)
6226                         return -EINVAL;
6227                 setup.channel_type = channel_type;
6228         } else {
6229                 /* cfg80211_join_mesh() will sort it out */
6230                 setup.channel = NULL;
6231         }
6232
6233         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6234 }
6235
6236 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6237 {
6238         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6239         struct net_device *dev = info->user_ptr[1];
6240
6241         return cfg80211_leave_mesh(rdev, dev);
6242 }
6243
6244 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6245 {
6246         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6247         struct sk_buff *msg;
6248         void *hdr;
6249
6250         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6251                 return -EOPNOTSUPP;
6252
6253         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6254         if (!msg)
6255                 return -ENOMEM;
6256
6257         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6258                              NL80211_CMD_GET_WOWLAN);
6259         if (!hdr)
6260                 goto nla_put_failure;
6261
6262         if (rdev->wowlan) {
6263                 struct nlattr *nl_wowlan;
6264
6265                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6266                 if (!nl_wowlan)
6267                         goto nla_put_failure;
6268
6269                 if ((rdev->wowlan->any &&
6270                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6271                     (rdev->wowlan->disconnect &&
6272                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6273                     (rdev->wowlan->magic_pkt &&
6274                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6275                     (rdev->wowlan->gtk_rekey_failure &&
6276                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6277                     (rdev->wowlan->eap_identity_req &&
6278                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6279                     (rdev->wowlan->four_way_handshake &&
6280                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6281                     (rdev->wowlan->rfkill_release &&
6282                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6283                         goto nla_put_failure;
6284                 if (rdev->wowlan->n_patterns) {
6285                         struct nlattr *nl_pats, *nl_pat;
6286                         int i, pat_len;
6287
6288                         nl_pats = nla_nest_start(msg,
6289                                         NL80211_WOWLAN_TRIG_PKT_PATTERN);
6290                         if (!nl_pats)
6291                                 goto nla_put_failure;
6292
6293                         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6294                                 nl_pat = nla_nest_start(msg, i + 1);
6295                                 if (!nl_pat)
6296                                         goto nla_put_failure;
6297                                 pat_len = rdev->wowlan->patterns[i].pattern_len;
6298                                 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6299                                             DIV_ROUND_UP(pat_len, 8),
6300                                             rdev->wowlan->patterns[i].mask) ||
6301                                     nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6302                                             pat_len,
6303                                             rdev->wowlan->patterns[i].pattern))
6304                                         goto nla_put_failure;
6305                                 nla_nest_end(msg, nl_pat);
6306                         }
6307                         nla_nest_end(msg, nl_pats);
6308                 }
6309
6310                 nla_nest_end(msg, nl_wowlan);
6311         }
6312
6313         genlmsg_end(msg, hdr);
6314         return genlmsg_reply(msg, info);
6315
6316 nla_put_failure:
6317         nlmsg_free(msg);
6318         return -ENOBUFS;
6319 }
6320
6321 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6322 {
6323         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6324         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6325         struct cfg80211_wowlan no_triggers = {};
6326         struct cfg80211_wowlan new_triggers = {};
6327         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6328         int err, i;
6329         bool prev_enabled = rdev->wowlan;
6330
6331         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6332                 return -EOPNOTSUPP;
6333
6334         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
6335                 goto no_triggers;
6336
6337         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6338                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6339                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6340                         nl80211_wowlan_policy);
6341         if (err)
6342                 return err;
6343
6344         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6345                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6346                         return -EINVAL;
6347                 new_triggers.any = true;
6348         }
6349
6350         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6351                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6352                         return -EINVAL;
6353                 new_triggers.disconnect = true;
6354         }
6355
6356         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6357                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6358                         return -EINVAL;
6359                 new_triggers.magic_pkt = true;
6360         }
6361
6362         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6363                 return -EINVAL;
6364
6365         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6366                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6367                         return -EINVAL;
6368                 new_triggers.gtk_rekey_failure = true;
6369         }
6370
6371         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6372                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6373                         return -EINVAL;
6374                 new_triggers.eap_identity_req = true;
6375         }
6376
6377         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6378                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6379                         return -EINVAL;
6380                 new_triggers.four_way_handshake = true;
6381         }
6382
6383         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6384                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6385                         return -EINVAL;
6386                 new_triggers.rfkill_release = true;
6387         }
6388
6389         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6390                 struct nlattr *pat;
6391                 int n_patterns = 0;
6392                 int rem, pat_len, mask_len;
6393                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6394
6395                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6396                                     rem)
6397                         n_patterns++;
6398                 if (n_patterns > wowlan->n_patterns)
6399                         return -EINVAL;
6400
6401                 new_triggers.patterns = kcalloc(n_patterns,
6402                                                 sizeof(new_triggers.patterns[0]),
6403                                                 GFP_KERNEL);
6404                 if (!new_triggers.patterns)
6405                         return -ENOMEM;
6406
6407                 new_triggers.n_patterns = n_patterns;
6408                 i = 0;
6409
6410                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6411                                     rem) {
6412                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6413                                   nla_data(pat), nla_len(pat), NULL);
6414                         err = -EINVAL;
6415                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6416                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6417                                 goto error;
6418                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6419                         mask_len = DIV_ROUND_UP(pat_len, 8);
6420                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6421                             mask_len)
6422                                 goto error;
6423                         if (pat_len > wowlan->pattern_max_len ||
6424                             pat_len < wowlan->pattern_min_len)
6425                                 goto error;
6426
6427                         new_triggers.patterns[i].mask =
6428                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
6429                         if (!new_triggers.patterns[i].mask) {
6430                                 err = -ENOMEM;
6431                                 goto error;
6432                         }
6433                         new_triggers.patterns[i].pattern =
6434                                 new_triggers.patterns[i].mask + mask_len;
6435                         memcpy(new_triggers.patterns[i].mask,
6436                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6437                                mask_len);
6438                         new_triggers.patterns[i].pattern_len = pat_len;
6439                         memcpy(new_triggers.patterns[i].pattern,
6440                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6441                                pat_len);
6442                         i++;
6443                 }
6444         }
6445
6446         if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
6447                 struct cfg80211_wowlan *ntrig;
6448                 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
6449                                 GFP_KERNEL);
6450                 if (!ntrig) {
6451                         err = -ENOMEM;
6452                         goto error;
6453                 }
6454                 cfg80211_rdev_free_wowlan(rdev);
6455                 rdev->wowlan = ntrig;
6456         } else {
6457  no_triggers:
6458                 cfg80211_rdev_free_wowlan(rdev);
6459                 rdev->wowlan = NULL;
6460         }
6461
6462         if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6463                 rdev->ops->set_wakeup(&rdev->wiphy, rdev->wowlan);
6464
6465         return 0;
6466  error:
6467         for (i = 0; i < new_triggers.n_patterns; i++)
6468                 kfree(new_triggers.patterns[i].mask);
6469         kfree(new_triggers.patterns);
6470         return err;
6471 }
6472
6473 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6474 {
6475         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6476         struct net_device *dev = info->user_ptr[1];
6477         struct wireless_dev *wdev = dev->ieee80211_ptr;
6478         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6479         struct cfg80211_gtk_rekey_data rekey_data;
6480         int err;
6481
6482         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6483                 return -EINVAL;
6484
6485         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6486                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6487                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6488                         nl80211_rekey_policy);
6489         if (err)
6490                 return err;
6491
6492         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6493                 return -ERANGE;
6494         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6495                 return -ERANGE;
6496         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6497                 return -ERANGE;
6498
6499         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6500                NL80211_KEK_LEN);
6501         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6502                NL80211_KCK_LEN);
6503         memcpy(rekey_data.replay_ctr,
6504                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6505                NL80211_REPLAY_CTR_LEN);
6506
6507         wdev_lock(wdev);
6508         if (!wdev->current_bss) {
6509                 err = -ENOTCONN;
6510                 goto out;
6511         }
6512
6513         if (!rdev->ops->set_rekey_data) {
6514                 err = -EOPNOTSUPP;
6515                 goto out;
6516         }
6517
6518         err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6519  out:
6520         wdev_unlock(wdev);
6521         return err;
6522 }
6523
6524 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6525                                              struct genl_info *info)
6526 {
6527         struct net_device *dev = info->user_ptr[1];
6528         struct wireless_dev *wdev = dev->ieee80211_ptr;
6529
6530         if (wdev->iftype != NL80211_IFTYPE_AP &&
6531             wdev->iftype != NL80211_IFTYPE_P2P_GO)
6532                 return -EINVAL;
6533
6534         if (wdev->ap_unexpected_nlpid)
6535                 return -EBUSY;
6536
6537         wdev->ap_unexpected_nlpid = info->snd_pid;
6538         return 0;
6539 }
6540
6541 static int nl80211_probe_client(struct sk_buff *skb,
6542                                 struct genl_info *info)
6543 {
6544         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6545         struct net_device *dev = info->user_ptr[1];
6546         struct wireless_dev *wdev = dev->ieee80211_ptr;
6547         struct sk_buff *msg;
6548         void *hdr;
6549         const u8 *addr;
6550         u64 cookie;
6551         int err;
6552
6553         if (wdev->iftype != NL80211_IFTYPE_AP &&
6554             wdev->iftype != NL80211_IFTYPE_P2P_GO)
6555                 return -EOPNOTSUPP;
6556
6557         if (!info->attrs[NL80211_ATTR_MAC])
6558                 return -EINVAL;
6559
6560         if (!rdev->ops->probe_client)
6561                 return -EOPNOTSUPP;
6562
6563         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6564         if (!msg)
6565                 return -ENOMEM;
6566
6567         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6568                              NL80211_CMD_PROBE_CLIENT);
6569
6570         if (IS_ERR(hdr)) {
6571                 err = PTR_ERR(hdr);
6572                 goto free_msg;
6573         }
6574
6575         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6576
6577         err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6578         if (err)
6579                 goto free_msg;
6580
6581         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6582                 goto nla_put_failure;
6583
6584         genlmsg_end(msg, hdr);
6585
6586         return genlmsg_reply(msg, info);
6587
6588  nla_put_failure:
6589         err = -ENOBUFS;
6590  free_msg:
6591         nlmsg_free(msg);
6592         return err;
6593 }
6594
6595 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6596 {
6597         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6598
6599         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6600                 return -EOPNOTSUPP;
6601
6602         if (rdev->ap_beacons_nlpid)
6603                 return -EBUSY;
6604
6605         rdev->ap_beacons_nlpid = info->snd_pid;
6606
6607         return 0;
6608 }
6609
6610 #define NL80211_FLAG_NEED_WIPHY         0x01
6611 #define NL80211_FLAG_NEED_NETDEV        0x02
6612 #define NL80211_FLAG_NEED_RTNL          0x04
6613 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
6614 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
6615                                          NL80211_FLAG_CHECK_NETDEV_UP)
6616
6617 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6618                             struct genl_info *info)
6619 {
6620         struct cfg80211_registered_device *rdev;
6621         struct net_device *dev;
6622         int err;
6623         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6624
6625         if (rtnl)
6626                 rtnl_lock();
6627
6628         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6629                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6630                 if (IS_ERR(rdev)) {
6631                         if (rtnl)
6632                                 rtnl_unlock();
6633                         return PTR_ERR(rdev);
6634                 }
6635                 info->user_ptr[0] = rdev;
6636         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6637                 err = get_rdev_dev_by_ifindex(genl_info_net(info), info->attrs,
6638                                               &rdev, &dev);
6639                 if (err) {
6640                         if (rtnl)
6641                                 rtnl_unlock();
6642                         return err;
6643                 }
6644                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6645                     !netif_running(dev)) {
6646                         cfg80211_unlock_rdev(rdev);
6647                         dev_put(dev);
6648                         if (rtnl)
6649                                 rtnl_unlock();
6650                         return -ENETDOWN;
6651                 }
6652                 info->user_ptr[0] = rdev;
6653                 info->user_ptr[1] = dev;
6654         }
6655
6656         return 0;
6657 }
6658
6659 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6660                               struct genl_info *info)
6661 {
6662         if (info->user_ptr[0])
6663                 cfg80211_unlock_rdev(info->user_ptr[0]);
6664         if (info->user_ptr[1])
6665                 dev_put(info->user_ptr[1]);
6666         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6667                 rtnl_unlock();
6668 }
6669
6670 static struct genl_ops nl80211_ops[] = {
6671         {
6672                 .cmd = NL80211_CMD_GET_WIPHY,
6673                 .doit = nl80211_get_wiphy,
6674                 .dumpit = nl80211_dump_wiphy,
6675                 .policy = nl80211_policy,
6676                 /* can be retrieved by unprivileged users */
6677                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6678         },
6679         {
6680                 .cmd = NL80211_CMD_SET_WIPHY,
6681                 .doit = nl80211_set_wiphy,
6682                 .policy = nl80211_policy,
6683                 .flags = GENL_ADMIN_PERM,
6684                 .internal_flags = NL80211_FLAG_NEED_RTNL,
6685         },
6686         {
6687                 .cmd = NL80211_CMD_GET_INTERFACE,
6688                 .doit = nl80211_get_interface,
6689                 .dumpit = nl80211_dump_interface,
6690                 .policy = nl80211_policy,
6691                 /* can be retrieved by unprivileged users */
6692                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6693         },
6694         {
6695                 .cmd = NL80211_CMD_SET_INTERFACE,
6696                 .doit = nl80211_set_interface,
6697                 .policy = nl80211_policy,
6698                 .flags = GENL_ADMIN_PERM,
6699                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6700                                   NL80211_FLAG_NEED_RTNL,
6701         },
6702         {
6703                 .cmd = NL80211_CMD_NEW_INTERFACE,
6704                 .doit = nl80211_new_interface,
6705                 .policy = nl80211_policy,
6706                 .flags = GENL_ADMIN_PERM,
6707                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6708                                   NL80211_FLAG_NEED_RTNL,
6709         },
6710         {
6711                 .cmd = NL80211_CMD_DEL_INTERFACE,
6712                 .doit = nl80211_del_interface,
6713                 .policy = nl80211_policy,
6714                 .flags = GENL_ADMIN_PERM,
6715                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6716                                   NL80211_FLAG_NEED_RTNL,
6717         },
6718         {
6719                 .cmd = NL80211_CMD_GET_KEY,
6720                 .doit = nl80211_get_key,
6721                 .policy = nl80211_policy,
6722                 .flags = GENL_ADMIN_PERM,
6723                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6724                                   NL80211_FLAG_NEED_RTNL,
6725         },
6726         {
6727                 .cmd = NL80211_CMD_SET_KEY,
6728                 .doit = nl80211_set_key,
6729                 .policy = nl80211_policy,
6730                 .flags = GENL_ADMIN_PERM,
6731                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6732                                   NL80211_FLAG_NEED_RTNL,
6733         },
6734         {
6735                 .cmd = NL80211_CMD_NEW_KEY,
6736                 .doit = nl80211_new_key,
6737                 .policy = nl80211_policy,
6738                 .flags = GENL_ADMIN_PERM,
6739                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6740                                   NL80211_FLAG_NEED_RTNL,
6741         },
6742         {
6743                 .cmd = NL80211_CMD_DEL_KEY,
6744                 .doit = nl80211_del_key,
6745                 .policy = nl80211_policy,
6746                 .flags = GENL_ADMIN_PERM,
6747                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6748                                   NL80211_FLAG_NEED_RTNL,
6749         },
6750         {
6751                 .cmd = NL80211_CMD_SET_BEACON,
6752                 .policy = nl80211_policy,
6753                 .flags = GENL_ADMIN_PERM,
6754                 .doit = nl80211_set_beacon,
6755                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6756                                   NL80211_FLAG_NEED_RTNL,
6757         },
6758         {
6759                 .cmd = NL80211_CMD_START_AP,
6760                 .policy = nl80211_policy,
6761                 .flags = GENL_ADMIN_PERM,
6762                 .doit = nl80211_start_ap,
6763                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6764                                   NL80211_FLAG_NEED_RTNL,
6765         },
6766         {
6767                 .cmd = NL80211_CMD_STOP_AP,
6768                 .policy = nl80211_policy,
6769                 .flags = GENL_ADMIN_PERM,
6770                 .doit = nl80211_stop_ap,
6771                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6772                                   NL80211_FLAG_NEED_RTNL,
6773         },
6774         {
6775                 .cmd = NL80211_CMD_GET_STATION,
6776                 .doit = nl80211_get_station,
6777                 .dumpit = nl80211_dump_station,
6778                 .policy = nl80211_policy,
6779                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6780                                   NL80211_FLAG_NEED_RTNL,
6781         },
6782         {
6783                 .cmd = NL80211_CMD_SET_STATION,
6784                 .doit = nl80211_set_station,
6785                 .policy = nl80211_policy,
6786                 .flags = GENL_ADMIN_PERM,
6787                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6788                                   NL80211_FLAG_NEED_RTNL,
6789         },
6790         {
6791                 .cmd = NL80211_CMD_NEW_STATION,
6792                 .doit = nl80211_new_station,
6793                 .policy = nl80211_policy,
6794                 .flags = GENL_ADMIN_PERM,
6795                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6796                                   NL80211_FLAG_NEED_RTNL,
6797         },
6798         {
6799                 .cmd = NL80211_CMD_DEL_STATION,
6800                 .doit = nl80211_del_station,
6801                 .policy = nl80211_policy,
6802                 .flags = GENL_ADMIN_PERM,
6803                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6804                                   NL80211_FLAG_NEED_RTNL,
6805         },
6806         {
6807                 .cmd = NL80211_CMD_GET_MPATH,
6808                 .doit = nl80211_get_mpath,
6809                 .dumpit = nl80211_dump_mpath,
6810                 .policy = nl80211_policy,
6811                 .flags = GENL_ADMIN_PERM,
6812                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6813                                   NL80211_FLAG_NEED_RTNL,
6814         },
6815         {
6816                 .cmd = NL80211_CMD_SET_MPATH,
6817                 .doit = nl80211_set_mpath,
6818                 .policy = nl80211_policy,
6819                 .flags = GENL_ADMIN_PERM,
6820                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6821                                   NL80211_FLAG_NEED_RTNL,
6822         },
6823         {
6824                 .cmd = NL80211_CMD_NEW_MPATH,
6825                 .doit = nl80211_new_mpath,
6826                 .policy = nl80211_policy,
6827                 .flags = GENL_ADMIN_PERM,
6828                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6829                                   NL80211_FLAG_NEED_RTNL,
6830         },
6831         {
6832                 .cmd = NL80211_CMD_DEL_MPATH,
6833                 .doit = nl80211_del_mpath,
6834                 .policy = nl80211_policy,
6835                 .flags = GENL_ADMIN_PERM,
6836                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6837                                   NL80211_FLAG_NEED_RTNL,
6838         },
6839         {
6840                 .cmd = NL80211_CMD_SET_BSS,
6841                 .doit = nl80211_set_bss,
6842                 .policy = nl80211_policy,
6843                 .flags = GENL_ADMIN_PERM,
6844                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6845                                   NL80211_FLAG_NEED_RTNL,
6846         },
6847         {
6848                 .cmd = NL80211_CMD_GET_REG,
6849                 .doit = nl80211_get_reg,
6850                 .policy = nl80211_policy,
6851                 /* can be retrieved by unprivileged users */
6852         },
6853         {
6854                 .cmd = NL80211_CMD_SET_REG,
6855                 .doit = nl80211_set_reg,
6856                 .policy = nl80211_policy,
6857                 .flags = GENL_ADMIN_PERM,
6858         },
6859         {
6860                 .cmd = NL80211_CMD_REQ_SET_REG,
6861                 .doit = nl80211_req_set_reg,
6862                 .policy = nl80211_policy,
6863                 .flags = GENL_ADMIN_PERM,
6864         },
6865         {
6866                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6867                 .doit = nl80211_get_mesh_config,
6868                 .policy = nl80211_policy,
6869                 /* can be retrieved by unprivileged users */
6870                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6871                                   NL80211_FLAG_NEED_RTNL,
6872         },
6873         {
6874                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6875                 .doit = nl80211_update_mesh_config,
6876                 .policy = nl80211_policy,
6877                 .flags = GENL_ADMIN_PERM,
6878                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6879                                   NL80211_FLAG_NEED_RTNL,
6880         },
6881         {
6882                 .cmd = NL80211_CMD_TRIGGER_SCAN,
6883                 .doit = nl80211_trigger_scan,
6884                 .policy = nl80211_policy,
6885                 .flags = GENL_ADMIN_PERM,
6886                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6887                                   NL80211_FLAG_NEED_RTNL,
6888         },
6889         {
6890                 .cmd = NL80211_CMD_GET_SCAN,
6891                 .policy = nl80211_policy,
6892                 .dumpit = nl80211_dump_scan,
6893         },
6894         {
6895                 .cmd = NL80211_CMD_START_SCHED_SCAN,
6896                 .doit = nl80211_start_sched_scan,
6897                 .policy = nl80211_policy,
6898                 .flags = GENL_ADMIN_PERM,
6899                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6900                                   NL80211_FLAG_NEED_RTNL,
6901         },
6902         {
6903                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6904                 .doit = nl80211_stop_sched_scan,
6905                 .policy = nl80211_policy,
6906                 .flags = GENL_ADMIN_PERM,
6907                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6908                                   NL80211_FLAG_NEED_RTNL,
6909         },
6910         {
6911                 .cmd = NL80211_CMD_AUTHENTICATE,
6912                 .doit = nl80211_authenticate,
6913                 .policy = nl80211_policy,
6914                 .flags = GENL_ADMIN_PERM,
6915                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6916                                   NL80211_FLAG_NEED_RTNL,
6917         },
6918         {
6919                 .cmd = NL80211_CMD_ASSOCIATE,
6920                 .doit = nl80211_associate,
6921                 .policy = nl80211_policy,
6922                 .flags = GENL_ADMIN_PERM,
6923                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6924                                   NL80211_FLAG_NEED_RTNL,
6925         },
6926         {
6927                 .cmd = NL80211_CMD_DEAUTHENTICATE,
6928                 .doit = nl80211_deauthenticate,
6929                 .policy = nl80211_policy,
6930                 .flags = GENL_ADMIN_PERM,
6931                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6932                                   NL80211_FLAG_NEED_RTNL,
6933         },
6934         {
6935                 .cmd = NL80211_CMD_DISASSOCIATE,
6936                 .doit = nl80211_disassociate,
6937                 .policy = nl80211_policy,
6938                 .flags = GENL_ADMIN_PERM,
6939                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6940                                   NL80211_FLAG_NEED_RTNL,
6941         },
6942         {
6943                 .cmd = NL80211_CMD_JOIN_IBSS,
6944                 .doit = nl80211_join_ibss,
6945                 .policy = nl80211_policy,
6946                 .flags = GENL_ADMIN_PERM,
6947                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6948                                   NL80211_FLAG_NEED_RTNL,
6949         },
6950         {
6951                 .cmd = NL80211_CMD_LEAVE_IBSS,
6952                 .doit = nl80211_leave_ibss,
6953                 .policy = nl80211_policy,
6954                 .flags = GENL_ADMIN_PERM,
6955                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6956                                   NL80211_FLAG_NEED_RTNL,
6957         },
6958 #ifdef CONFIG_NL80211_TESTMODE
6959         {
6960                 .cmd = NL80211_CMD_TESTMODE,
6961                 .doit = nl80211_testmode_do,
6962                 .dumpit = nl80211_testmode_dump,
6963                 .policy = nl80211_policy,
6964                 .flags = GENL_ADMIN_PERM,
6965                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6966                                   NL80211_FLAG_NEED_RTNL,
6967         },
6968 #endif
6969         {
6970                 .cmd = NL80211_CMD_CONNECT,
6971                 .doit = nl80211_connect,
6972                 .policy = nl80211_policy,
6973                 .flags = GENL_ADMIN_PERM,
6974                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6975                                   NL80211_FLAG_NEED_RTNL,
6976         },
6977         {
6978                 .cmd = NL80211_CMD_DISCONNECT,
6979                 .doit = nl80211_disconnect,
6980                 .policy = nl80211_policy,
6981                 .flags = GENL_ADMIN_PERM,
6982                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6983                                   NL80211_FLAG_NEED_RTNL,
6984         },
6985         {
6986                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6987                 .doit = nl80211_wiphy_netns,
6988                 .policy = nl80211_policy,
6989                 .flags = GENL_ADMIN_PERM,
6990                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6991                                   NL80211_FLAG_NEED_RTNL,
6992         },
6993         {
6994                 .cmd = NL80211_CMD_GET_SURVEY,
6995                 .policy = nl80211_policy,
6996                 .dumpit = nl80211_dump_survey,
6997         },
6998         {
6999                 .cmd = NL80211_CMD_SET_PMKSA,
7000                 .doit = nl80211_setdel_pmksa,
7001                 .policy = nl80211_policy,
7002                 .flags = GENL_ADMIN_PERM,
7003                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7004                                   NL80211_FLAG_NEED_RTNL,
7005         },
7006         {
7007                 .cmd = NL80211_CMD_DEL_PMKSA,
7008                 .doit = nl80211_setdel_pmksa,
7009                 .policy = nl80211_policy,
7010                 .flags = GENL_ADMIN_PERM,
7011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7012                                   NL80211_FLAG_NEED_RTNL,
7013         },
7014         {
7015                 .cmd = NL80211_CMD_FLUSH_PMKSA,
7016                 .doit = nl80211_flush_pmksa,
7017                 .policy = nl80211_policy,
7018                 .flags = GENL_ADMIN_PERM,
7019                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7020                                   NL80211_FLAG_NEED_RTNL,
7021         },
7022         {
7023                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7024                 .doit = nl80211_remain_on_channel,
7025                 .policy = nl80211_policy,
7026                 .flags = GENL_ADMIN_PERM,
7027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7028                                   NL80211_FLAG_NEED_RTNL,
7029         },
7030         {
7031                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7032                 .doit = nl80211_cancel_remain_on_channel,
7033                 .policy = nl80211_policy,
7034                 .flags = GENL_ADMIN_PERM,
7035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7036                                   NL80211_FLAG_NEED_RTNL,
7037         },
7038         {
7039                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7040                 .doit = nl80211_set_tx_bitrate_mask,
7041                 .policy = nl80211_policy,
7042                 .flags = GENL_ADMIN_PERM,
7043                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7044                                   NL80211_FLAG_NEED_RTNL,
7045         },
7046         {
7047                 .cmd = NL80211_CMD_REGISTER_FRAME,
7048                 .doit = nl80211_register_mgmt,
7049                 .policy = nl80211_policy,
7050                 .flags = GENL_ADMIN_PERM,
7051                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7052                                   NL80211_FLAG_NEED_RTNL,
7053         },
7054         {
7055                 .cmd = NL80211_CMD_FRAME,
7056                 .doit = nl80211_tx_mgmt,
7057                 .policy = nl80211_policy,
7058                 .flags = GENL_ADMIN_PERM,
7059                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7060                                   NL80211_FLAG_NEED_RTNL,
7061         },
7062         {
7063                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7064                 .doit = nl80211_tx_mgmt_cancel_wait,
7065                 .policy = nl80211_policy,
7066                 .flags = GENL_ADMIN_PERM,
7067                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7068                                   NL80211_FLAG_NEED_RTNL,
7069         },
7070         {
7071                 .cmd = NL80211_CMD_SET_POWER_SAVE,
7072                 .doit = nl80211_set_power_save,
7073                 .policy = nl80211_policy,
7074                 .flags = GENL_ADMIN_PERM,
7075                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7076                                   NL80211_FLAG_NEED_RTNL,
7077         },
7078         {
7079                 .cmd = NL80211_CMD_GET_POWER_SAVE,
7080                 .doit = nl80211_get_power_save,
7081                 .policy = nl80211_policy,
7082                 /* can be retrieved by unprivileged users */
7083                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7084                                   NL80211_FLAG_NEED_RTNL,
7085         },
7086         {
7087                 .cmd = NL80211_CMD_SET_CQM,
7088                 .doit = nl80211_set_cqm,
7089                 .policy = nl80211_policy,
7090                 .flags = GENL_ADMIN_PERM,
7091                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7092                                   NL80211_FLAG_NEED_RTNL,
7093         },
7094         {
7095                 .cmd = NL80211_CMD_SET_CHANNEL,
7096                 .doit = nl80211_set_channel,
7097                 .policy = nl80211_policy,
7098                 .flags = GENL_ADMIN_PERM,
7099                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7100                                   NL80211_FLAG_NEED_RTNL,
7101         },
7102         {
7103                 .cmd = NL80211_CMD_SET_WDS_PEER,
7104                 .doit = nl80211_set_wds_peer,
7105                 .policy = nl80211_policy,
7106                 .flags = GENL_ADMIN_PERM,
7107                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7108                                   NL80211_FLAG_NEED_RTNL,
7109         },
7110         {
7111                 .cmd = NL80211_CMD_JOIN_MESH,
7112                 .doit = nl80211_join_mesh,
7113                 .policy = nl80211_policy,
7114                 .flags = GENL_ADMIN_PERM,
7115                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7116                                   NL80211_FLAG_NEED_RTNL,
7117         },
7118         {
7119                 .cmd = NL80211_CMD_LEAVE_MESH,
7120                 .doit = nl80211_leave_mesh,
7121                 .policy = nl80211_policy,
7122                 .flags = GENL_ADMIN_PERM,
7123                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7124                                   NL80211_FLAG_NEED_RTNL,
7125         },
7126         {
7127                 .cmd = NL80211_CMD_GET_WOWLAN,
7128                 .doit = nl80211_get_wowlan,
7129                 .policy = nl80211_policy,
7130                 /* can be retrieved by unprivileged users */
7131                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7132                                   NL80211_FLAG_NEED_RTNL,
7133         },
7134         {
7135                 .cmd = NL80211_CMD_SET_WOWLAN,
7136                 .doit = nl80211_set_wowlan,
7137                 .policy = nl80211_policy,
7138                 .flags = GENL_ADMIN_PERM,
7139                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7140                                   NL80211_FLAG_NEED_RTNL,
7141         },
7142         {
7143                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7144                 .doit = nl80211_set_rekey_data,
7145                 .policy = nl80211_policy,
7146                 .flags = GENL_ADMIN_PERM,
7147                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7148                                   NL80211_FLAG_NEED_RTNL,
7149         },
7150         {
7151                 .cmd = NL80211_CMD_TDLS_MGMT,
7152                 .doit = nl80211_tdls_mgmt,
7153                 .policy = nl80211_policy,
7154                 .flags = GENL_ADMIN_PERM,
7155                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7156                                   NL80211_FLAG_NEED_RTNL,
7157         },
7158         {
7159                 .cmd = NL80211_CMD_TDLS_OPER,
7160                 .doit = nl80211_tdls_oper,
7161                 .policy = nl80211_policy,
7162                 .flags = GENL_ADMIN_PERM,
7163                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7164                                   NL80211_FLAG_NEED_RTNL,
7165         },
7166         {
7167                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7168                 .doit = nl80211_register_unexpected_frame,
7169                 .policy = nl80211_policy,
7170                 .flags = GENL_ADMIN_PERM,
7171                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7172                                   NL80211_FLAG_NEED_RTNL,
7173         },
7174         {
7175                 .cmd = NL80211_CMD_PROBE_CLIENT,
7176                 .doit = nl80211_probe_client,
7177                 .policy = nl80211_policy,
7178                 .flags = GENL_ADMIN_PERM,
7179                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7180                                   NL80211_FLAG_NEED_RTNL,
7181         },
7182         {
7183                 .cmd = NL80211_CMD_REGISTER_BEACONS,
7184                 .doit = nl80211_register_beacons,
7185                 .policy = nl80211_policy,
7186                 .flags = GENL_ADMIN_PERM,
7187                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7188                                   NL80211_FLAG_NEED_RTNL,
7189         },
7190         {
7191                 .cmd = NL80211_CMD_SET_NOACK_MAP,
7192                 .doit = nl80211_set_noack_map,
7193                 .policy = nl80211_policy,
7194                 .flags = GENL_ADMIN_PERM,
7195                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7196                                   NL80211_FLAG_NEED_RTNL,
7197         },
7198
7199 };
7200
7201 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7202         .name = "mlme",
7203 };
7204
7205 /* multicast groups */
7206 static struct genl_multicast_group nl80211_config_mcgrp = {
7207         .name = "config",
7208 };
7209 static struct genl_multicast_group nl80211_scan_mcgrp = {
7210         .name = "scan",
7211 };
7212 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7213         .name = "regulatory",
7214 };
7215
7216 /* notification functions */
7217
7218 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7219 {
7220         struct sk_buff *msg;
7221
7222         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7223         if (!msg)
7224                 return;
7225
7226         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7227                 nlmsg_free(msg);
7228                 return;
7229         }
7230
7231         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7232                                 nl80211_config_mcgrp.id, GFP_KERNEL);
7233 }
7234
7235 static int nl80211_add_scan_req(struct sk_buff *msg,
7236                                 struct cfg80211_registered_device *rdev)
7237 {
7238         struct cfg80211_scan_request *req = rdev->scan_req;
7239         struct nlattr *nest;
7240         int i;
7241
7242         ASSERT_RDEV_LOCK(rdev);
7243
7244         if (WARN_ON(!req))
7245                 return 0;
7246
7247         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7248         if (!nest)
7249                 goto nla_put_failure;
7250         for (i = 0; i < req->n_ssids; i++) {
7251                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7252                         goto nla_put_failure;
7253         }
7254         nla_nest_end(msg, nest);
7255
7256         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7257         if (!nest)
7258                 goto nla_put_failure;
7259         for (i = 0; i < req->n_channels; i++) {
7260                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7261                         goto nla_put_failure;
7262         }
7263         nla_nest_end(msg, nest);
7264
7265         if (req->ie &&
7266             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7267                 goto nla_put_failure;
7268
7269         return 0;
7270  nla_put_failure:
7271         return -ENOBUFS;
7272 }
7273
7274 static int nl80211_send_scan_msg(struct sk_buff *msg,
7275                                  struct cfg80211_registered_device *rdev,
7276                                  struct net_device *netdev,
7277                                  u32 pid, u32 seq, int flags,
7278                                  u32 cmd)
7279 {
7280         void *hdr;
7281
7282         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7283         if (!hdr)
7284                 return -1;
7285
7286         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7287             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7288                 goto nla_put_failure;
7289
7290         /* ignore errors and send incomplete event anyway */
7291         nl80211_add_scan_req(msg, rdev);
7292
7293         return genlmsg_end(msg, hdr);
7294
7295  nla_put_failure:
7296         genlmsg_cancel(msg, hdr);
7297         return -EMSGSIZE;
7298 }
7299
7300 static int
7301 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7302                             struct cfg80211_registered_device *rdev,
7303                             struct net_device *netdev,
7304                             u32 pid, u32 seq, int flags, u32 cmd)
7305 {
7306         void *hdr;
7307
7308         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7309         if (!hdr)
7310                 return -1;
7311
7312         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7313             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7314                 goto nla_put_failure;
7315
7316         return genlmsg_end(msg, hdr);
7317
7318  nla_put_failure:
7319         genlmsg_cancel(msg, hdr);
7320         return -EMSGSIZE;
7321 }
7322
7323 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7324                              struct net_device *netdev)
7325 {
7326         struct sk_buff *msg;
7327
7328         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7329         if (!msg)
7330                 return;
7331
7332         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7333                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
7334                 nlmsg_free(msg);
7335                 return;
7336         }
7337
7338         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7339                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7340 }
7341
7342 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7343                             struct net_device *netdev)
7344 {
7345         struct sk_buff *msg;
7346
7347         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7348         if (!msg)
7349                 return;
7350
7351         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7352                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7353                 nlmsg_free(msg);
7354                 return;
7355         }
7356
7357         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7358                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7359 }
7360
7361 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7362                                struct net_device *netdev)
7363 {
7364         struct sk_buff *msg;
7365
7366         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7367         if (!msg)
7368                 return;
7369
7370         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7371                                   NL80211_CMD_SCAN_ABORTED) < 0) {
7372                 nlmsg_free(msg);
7373                 return;
7374         }
7375
7376         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7377                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7378 }
7379
7380 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7381                                      struct net_device *netdev)
7382 {
7383         struct sk_buff *msg;
7384
7385         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7386         if (!msg)
7387                 return;
7388
7389         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7390                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7391                 nlmsg_free(msg);
7392                 return;
7393         }
7394
7395         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7396                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7397 }
7398
7399 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7400                              struct net_device *netdev, u32 cmd)
7401 {
7402         struct sk_buff *msg;
7403
7404         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7405         if (!msg)
7406                 return;
7407
7408         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7409                 nlmsg_free(msg);
7410                 return;
7411         }
7412
7413         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7414                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7415 }
7416
7417 /*
7418  * This can happen on global regulatory changes or device specific settings
7419  * based on custom world regulatory domains.
7420  */
7421 void nl80211_send_reg_change_event(struct regulatory_request *request)
7422 {
7423         struct sk_buff *msg;
7424         void *hdr;
7425
7426         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7427         if (!msg)
7428                 return;
7429
7430         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7431         if (!hdr) {
7432                 nlmsg_free(msg);
7433                 return;
7434         }
7435
7436         /* Userspace can always count this one always being set */
7437         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
7438                 goto nla_put_failure;
7439
7440         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
7441                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7442                                NL80211_REGDOM_TYPE_WORLD))
7443                         goto nla_put_failure;
7444         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
7445                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7446                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
7447                         goto nla_put_failure;
7448         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7449                    request->intersect) {
7450                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7451                                NL80211_REGDOM_TYPE_INTERSECTION))
7452                         goto nla_put_failure;
7453         } else {
7454                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7455                                NL80211_REGDOM_TYPE_COUNTRY) ||
7456                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
7457                                    request->alpha2))
7458                         goto nla_put_failure;
7459         }
7460
7461         if (wiphy_idx_valid(request->wiphy_idx) &&
7462             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
7463                 goto nla_put_failure;
7464
7465         genlmsg_end(msg, hdr);
7466
7467         rcu_read_lock();
7468         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7469                                 GFP_ATOMIC);
7470         rcu_read_unlock();
7471
7472         return;
7473
7474 nla_put_failure:
7475         genlmsg_cancel(msg, hdr);
7476         nlmsg_free(msg);
7477 }
7478
7479 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7480                                     struct net_device *netdev,
7481                                     const u8 *buf, size_t len,
7482                                     enum nl80211_commands cmd, gfp_t gfp)
7483 {
7484         struct sk_buff *msg;
7485         void *hdr;
7486
7487         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7488         if (!msg)
7489                 return;
7490
7491         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7492         if (!hdr) {
7493                 nlmsg_free(msg);
7494                 return;
7495         }
7496
7497         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7498             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7499             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
7500                 goto nla_put_failure;
7501
7502         genlmsg_end(msg, hdr);
7503
7504         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7505                                 nl80211_mlme_mcgrp.id, gfp);
7506         return;
7507
7508  nla_put_failure:
7509         genlmsg_cancel(msg, hdr);
7510         nlmsg_free(msg);
7511 }
7512
7513 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7514                           struct net_device *netdev, const u8 *buf,
7515                           size_t len, gfp_t gfp)
7516 {
7517         nl80211_send_mlme_event(rdev, netdev, buf, len,
7518                                 NL80211_CMD_AUTHENTICATE, gfp);
7519 }
7520
7521 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7522                            struct net_device *netdev, const u8 *buf,
7523                            size_t len, gfp_t gfp)
7524 {
7525         nl80211_send_mlme_event(rdev, netdev, buf, len,
7526                                 NL80211_CMD_ASSOCIATE, gfp);
7527 }
7528
7529 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7530                          struct net_device *netdev, const u8 *buf,
7531                          size_t len, gfp_t gfp)
7532 {
7533         nl80211_send_mlme_event(rdev, netdev, buf, len,
7534                                 NL80211_CMD_DEAUTHENTICATE, gfp);
7535 }
7536
7537 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7538                            struct net_device *netdev, const u8 *buf,
7539                            size_t len, gfp_t gfp)
7540 {
7541         nl80211_send_mlme_event(rdev, netdev, buf, len,
7542                                 NL80211_CMD_DISASSOCIATE, gfp);
7543 }
7544
7545 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7546                                 struct net_device *netdev, const u8 *buf,
7547                                 size_t len, gfp_t gfp)
7548 {
7549         nl80211_send_mlme_event(rdev, netdev, buf, len,
7550                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7551 }
7552
7553 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7554                                   struct net_device *netdev, const u8 *buf,
7555                                   size_t len, gfp_t gfp)
7556 {
7557         nl80211_send_mlme_event(rdev, netdev, buf, len,
7558                                 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7559 }
7560
7561 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7562                                       struct net_device *netdev, int cmd,
7563                                       const u8 *addr, gfp_t gfp)
7564 {
7565         struct sk_buff *msg;
7566         void *hdr;
7567
7568         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7569         if (!msg)
7570                 return;
7571
7572         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7573         if (!hdr) {
7574                 nlmsg_free(msg);
7575                 return;
7576         }
7577
7578         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7579             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7580             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
7581             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
7582                 goto nla_put_failure;
7583
7584         genlmsg_end(msg, hdr);
7585
7586         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7587                                 nl80211_mlme_mcgrp.id, gfp);
7588         return;
7589
7590  nla_put_failure:
7591         genlmsg_cancel(msg, hdr);
7592         nlmsg_free(msg);
7593 }
7594
7595 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7596                                struct net_device *netdev, const u8 *addr,
7597                                gfp_t gfp)
7598 {
7599         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7600                                   addr, gfp);
7601 }
7602
7603 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7604                                 struct net_device *netdev, const u8 *addr,
7605                                 gfp_t gfp)
7606 {
7607         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7608                                   addr, gfp);
7609 }
7610
7611 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7612                                  struct net_device *netdev, const u8 *bssid,
7613                                  const u8 *req_ie, size_t req_ie_len,
7614                                  const u8 *resp_ie, size_t resp_ie_len,
7615                                  u16 status, gfp_t gfp)
7616 {
7617         struct sk_buff *msg;
7618         void *hdr;
7619
7620         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7621         if (!msg)
7622                 return;
7623
7624         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7625         if (!hdr) {
7626                 nlmsg_free(msg);
7627                 return;
7628         }
7629
7630         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7631             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7632             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
7633             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
7634             (req_ie &&
7635              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
7636             (resp_ie &&
7637              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
7638                 goto nla_put_failure;
7639
7640         genlmsg_end(msg, hdr);
7641
7642         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7643                                 nl80211_mlme_mcgrp.id, gfp);
7644         return;
7645
7646  nla_put_failure:
7647         genlmsg_cancel(msg, hdr);
7648         nlmsg_free(msg);
7649
7650 }
7651
7652 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7653                          struct net_device *netdev, const u8 *bssid,
7654                          const u8 *req_ie, size_t req_ie_len,
7655                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7656 {
7657         struct sk_buff *msg;
7658         void *hdr;
7659
7660         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7661         if (!msg)
7662                 return;
7663
7664         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7665         if (!hdr) {
7666                 nlmsg_free(msg);
7667                 return;
7668         }
7669
7670         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7671             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7672             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
7673             (req_ie &&
7674              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
7675             (resp_ie &&
7676              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
7677                 goto nla_put_failure;
7678
7679         genlmsg_end(msg, hdr);
7680
7681         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7682                                 nl80211_mlme_mcgrp.id, gfp);
7683         return;
7684
7685  nla_put_failure:
7686         genlmsg_cancel(msg, hdr);
7687         nlmsg_free(msg);
7688
7689 }
7690
7691 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7692                                struct net_device *netdev, u16 reason,
7693                                const u8 *ie, size_t ie_len, bool from_ap)
7694 {
7695         struct sk_buff *msg;
7696         void *hdr;
7697
7698         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7699         if (!msg)
7700                 return;
7701
7702         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7703         if (!hdr) {
7704                 nlmsg_free(msg);
7705                 return;
7706         }
7707
7708         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7709             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7710             (from_ap && reason &&
7711              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
7712             (from_ap &&
7713              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
7714             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
7715                 goto nla_put_failure;
7716
7717         genlmsg_end(msg, hdr);
7718
7719         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7720                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7721         return;
7722
7723  nla_put_failure:
7724         genlmsg_cancel(msg, hdr);
7725         nlmsg_free(msg);
7726
7727 }
7728
7729 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7730                              struct net_device *netdev, const u8 *bssid,
7731                              gfp_t gfp)
7732 {
7733         struct sk_buff *msg;
7734         void *hdr;
7735
7736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7737         if (!msg)
7738                 return;
7739
7740         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7741         if (!hdr) {
7742                 nlmsg_free(msg);
7743                 return;
7744         }
7745
7746         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7747             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7748             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
7749                 goto nla_put_failure;
7750
7751         genlmsg_end(msg, hdr);
7752
7753         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7754                                 nl80211_mlme_mcgrp.id, gfp);
7755         return;
7756
7757  nla_put_failure:
7758         genlmsg_cancel(msg, hdr);
7759         nlmsg_free(msg);
7760 }
7761
7762 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7763                 struct net_device *netdev,
7764                 const u8 *macaddr, const u8* ie, u8 ie_len,
7765                 gfp_t gfp)
7766 {
7767         struct sk_buff *msg;
7768         void *hdr;
7769
7770         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7771         if (!msg)
7772                 return;
7773
7774         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7775         if (!hdr) {
7776                 nlmsg_free(msg);
7777                 return;
7778         }
7779
7780         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7781             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7782             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
7783             (ie_len && ie &&
7784              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
7785                 goto nla_put_failure;
7786
7787         genlmsg_end(msg, hdr);
7788
7789         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7790                                 nl80211_mlme_mcgrp.id, gfp);
7791         return;
7792
7793  nla_put_failure:
7794         genlmsg_cancel(msg, hdr);
7795         nlmsg_free(msg);
7796 }
7797
7798 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7799                                  struct net_device *netdev, const u8 *addr,
7800                                  enum nl80211_key_type key_type, int key_id,
7801                                  const u8 *tsc, gfp_t gfp)
7802 {
7803         struct sk_buff *msg;
7804         void *hdr;
7805
7806         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7807         if (!msg)
7808                 return;
7809
7810         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7811         if (!hdr) {
7812                 nlmsg_free(msg);
7813                 return;
7814         }
7815
7816         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7817             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7818             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
7819             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
7820             (key_id != -1 &&
7821              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
7822             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
7823                 goto nla_put_failure;
7824
7825         genlmsg_end(msg, hdr);
7826
7827         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7828                                 nl80211_mlme_mcgrp.id, gfp);
7829         return;
7830
7831  nla_put_failure:
7832         genlmsg_cancel(msg, hdr);
7833         nlmsg_free(msg);
7834 }
7835
7836 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7837                                     struct ieee80211_channel *channel_before,
7838                                     struct ieee80211_channel *channel_after)
7839 {
7840         struct sk_buff *msg;
7841         void *hdr;
7842         struct nlattr *nl_freq;
7843
7844         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7845         if (!msg)
7846                 return;
7847
7848         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7849         if (!hdr) {
7850                 nlmsg_free(msg);
7851                 return;
7852         }
7853
7854         /*
7855          * Since we are applying the beacon hint to a wiphy we know its
7856          * wiphy_idx is valid
7857          */
7858         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7859                 goto nla_put_failure;
7860
7861         /* Before */
7862         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7863         if (!nl_freq)
7864                 goto nla_put_failure;
7865         if (nl80211_msg_put_channel(msg, channel_before))
7866                 goto nla_put_failure;
7867         nla_nest_end(msg, nl_freq);
7868
7869         /* After */
7870         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7871         if (!nl_freq)
7872                 goto nla_put_failure;
7873         if (nl80211_msg_put_channel(msg, channel_after))
7874                 goto nla_put_failure;
7875         nla_nest_end(msg, nl_freq);
7876
7877         genlmsg_end(msg, hdr);
7878
7879         rcu_read_lock();
7880         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7881                                 GFP_ATOMIC);
7882         rcu_read_unlock();
7883
7884         return;
7885
7886 nla_put_failure:
7887         genlmsg_cancel(msg, hdr);
7888         nlmsg_free(msg);
7889 }
7890
7891 static void nl80211_send_remain_on_chan_event(
7892         int cmd, struct cfg80211_registered_device *rdev,
7893         struct net_device *netdev, u64 cookie,
7894         struct ieee80211_channel *chan,
7895         enum nl80211_channel_type channel_type,
7896         unsigned int duration, gfp_t gfp)
7897 {
7898         struct sk_buff *msg;
7899         void *hdr;
7900
7901         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7902         if (!msg)
7903                 return;
7904
7905         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7906         if (!hdr) {
7907                 nlmsg_free(msg);
7908                 return;
7909         }
7910
7911         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7912             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7913             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
7914             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type) ||
7915             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7916                 goto nla_put_failure;
7917
7918         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
7919             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
7920                 goto nla_put_failure;
7921
7922         genlmsg_end(msg, hdr);
7923
7924         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7925                                 nl80211_mlme_mcgrp.id, gfp);
7926         return;
7927
7928  nla_put_failure:
7929         genlmsg_cancel(msg, hdr);
7930         nlmsg_free(msg);
7931 }
7932
7933 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7934                                     struct net_device *netdev, u64 cookie,
7935                                     struct ieee80211_channel *chan,
7936                                     enum nl80211_channel_type channel_type,
7937                                     unsigned int duration, gfp_t gfp)
7938 {
7939         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7940                                           rdev, netdev, cookie, chan,
7941                                           channel_type, duration, gfp);
7942 }
7943
7944 void nl80211_send_remain_on_channel_cancel(
7945         struct cfg80211_registered_device *rdev, struct net_device *netdev,
7946         u64 cookie, struct ieee80211_channel *chan,
7947         enum nl80211_channel_type channel_type, gfp_t gfp)
7948 {
7949         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7950                                           rdev, netdev, cookie, chan,
7951                                           channel_type, 0, gfp);
7952 }
7953
7954 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7955                             struct net_device *dev, const u8 *mac_addr,
7956                             struct station_info *sinfo, gfp_t gfp)
7957 {
7958         struct sk_buff *msg;
7959
7960         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7961         if (!msg)
7962                 return;
7963
7964         if (nl80211_send_station(msg, 0, 0, 0,
7965                                  rdev, dev, mac_addr, sinfo) < 0) {
7966                 nlmsg_free(msg);
7967                 return;
7968         }
7969
7970         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7971                                 nl80211_mlme_mcgrp.id, gfp);
7972 }
7973
7974 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7975                                 struct net_device *dev, const u8 *mac_addr,
7976                                 gfp_t gfp)
7977 {
7978         struct sk_buff *msg;
7979         void *hdr;
7980
7981         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7982         if (!msg)
7983                 return;
7984
7985         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7986         if (!hdr) {
7987                 nlmsg_free(msg);
7988                 return;
7989         }
7990
7991         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7992             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
7993                 goto nla_put_failure;
7994
7995         genlmsg_end(msg, hdr);
7996
7997         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7998                                 nl80211_mlme_mcgrp.id, gfp);
7999         return;
8000
8001  nla_put_failure:
8002         genlmsg_cancel(msg, hdr);
8003         nlmsg_free(msg);
8004 }
8005
8006 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8007                                        const u8 *addr, gfp_t gfp)
8008 {
8009         struct wireless_dev *wdev = dev->ieee80211_ptr;
8010         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8011         struct sk_buff *msg;
8012         void *hdr;
8013         int err;
8014         u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
8015
8016         if (!nlpid)
8017                 return false;
8018
8019         msg = nlmsg_new(100, gfp);
8020         if (!msg)
8021                 return true;
8022
8023         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8024         if (!hdr) {
8025                 nlmsg_free(msg);
8026                 return true;
8027         }
8028
8029         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8030             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8031             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8032                 goto nla_put_failure;
8033
8034         err = genlmsg_end(msg, hdr);
8035         if (err < 0) {
8036                 nlmsg_free(msg);
8037                 return true;
8038         }
8039
8040         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8041         return true;
8042
8043  nla_put_failure:
8044         genlmsg_cancel(msg, hdr);
8045         nlmsg_free(msg);
8046         return true;
8047 }
8048
8049 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8050 {
8051         return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8052                                           addr, gfp);
8053 }
8054
8055 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8056                                     const u8 *addr, gfp_t gfp)
8057 {
8058         return __nl80211_unexpected_frame(dev,
8059                                           NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8060                                           addr, gfp);
8061 }
8062
8063 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8064                       struct net_device *netdev, u32 nlpid,
8065                       int freq, int sig_dbm,
8066                       const u8 *buf, size_t len, gfp_t gfp)
8067 {
8068         struct sk_buff *msg;
8069         void *hdr;
8070
8071         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8072         if (!msg)
8073                 return -ENOMEM;
8074
8075         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8076         if (!hdr) {
8077                 nlmsg_free(msg);
8078                 return -ENOMEM;
8079         }
8080
8081         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8082             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8083             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8084             (sig_dbm &&
8085              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8086             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8087                 goto nla_put_failure;
8088
8089         genlmsg_end(msg, hdr);
8090
8091         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8092
8093  nla_put_failure:
8094         genlmsg_cancel(msg, hdr);
8095         nlmsg_free(msg);
8096         return -ENOBUFS;
8097 }
8098
8099 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8100                                  struct net_device *netdev, u64 cookie,
8101                                  const u8 *buf, size_t len, bool ack,
8102                                  gfp_t gfp)
8103 {
8104         struct sk_buff *msg;
8105         void *hdr;
8106
8107         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8108         if (!msg)
8109                 return;
8110
8111         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8112         if (!hdr) {
8113                 nlmsg_free(msg);
8114                 return;
8115         }
8116
8117         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8118             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8119             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8120             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8121             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8122                 goto nla_put_failure;
8123
8124         genlmsg_end(msg, hdr);
8125
8126         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8127         return;
8128
8129  nla_put_failure:
8130         genlmsg_cancel(msg, hdr);
8131         nlmsg_free(msg);
8132 }
8133
8134 void
8135 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8136                              struct net_device *netdev,
8137                              enum nl80211_cqm_rssi_threshold_event rssi_event,
8138                              gfp_t gfp)
8139 {
8140         struct sk_buff *msg;
8141         struct nlattr *pinfoattr;
8142         void *hdr;
8143
8144         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8145         if (!msg)
8146                 return;
8147
8148         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8149         if (!hdr) {
8150                 nlmsg_free(msg);
8151                 return;
8152         }
8153
8154         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8155             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8156                 goto nla_put_failure;
8157
8158         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8159         if (!pinfoattr)
8160                 goto nla_put_failure;
8161
8162         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8163                         rssi_event))
8164                 goto nla_put_failure;
8165
8166         nla_nest_end(msg, pinfoattr);
8167
8168         genlmsg_end(msg, hdr);
8169
8170         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8171                                 nl80211_mlme_mcgrp.id, gfp);
8172         return;
8173
8174  nla_put_failure:
8175         genlmsg_cancel(msg, hdr);
8176         nlmsg_free(msg);
8177 }
8178
8179 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8180                               struct net_device *netdev, const u8 *bssid,
8181                               const u8 *replay_ctr, gfp_t gfp)
8182 {
8183         struct sk_buff *msg;
8184         struct nlattr *rekey_attr;
8185         void *hdr;
8186
8187         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8188         if (!msg)
8189                 return;
8190
8191         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8192         if (!hdr) {
8193                 nlmsg_free(msg);
8194                 return;
8195         }
8196
8197         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8198             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8199             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8200                 goto nla_put_failure;
8201
8202         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8203         if (!rekey_attr)
8204                 goto nla_put_failure;
8205
8206         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8207                     NL80211_REPLAY_CTR_LEN, replay_ctr))
8208                 goto nla_put_failure;
8209
8210         nla_nest_end(msg, rekey_attr);
8211
8212         genlmsg_end(msg, hdr);
8213
8214         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8215                                 nl80211_mlme_mcgrp.id, gfp);
8216         return;
8217
8218  nla_put_failure:
8219         genlmsg_cancel(msg, hdr);
8220         nlmsg_free(msg);
8221 }
8222
8223 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8224                                     struct net_device *netdev, int index,
8225                                     const u8 *bssid, bool preauth, gfp_t gfp)
8226 {
8227         struct sk_buff *msg;
8228         struct nlattr *attr;
8229         void *hdr;
8230
8231         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8232         if (!msg)
8233                 return;
8234
8235         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8236         if (!hdr) {
8237                 nlmsg_free(msg);
8238                 return;
8239         }
8240
8241         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8242             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8243                 goto nla_put_failure;
8244
8245         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8246         if (!attr)
8247                 goto nla_put_failure;
8248
8249         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8250             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8251             (preauth &&
8252              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8253                 goto nla_put_failure;
8254
8255         nla_nest_end(msg, attr);
8256
8257         genlmsg_end(msg, hdr);
8258
8259         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8260                                 nl80211_mlme_mcgrp.id, gfp);
8261         return;
8262
8263  nla_put_failure:
8264         genlmsg_cancel(msg, hdr);
8265         nlmsg_free(msg);
8266 }
8267
8268 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8269                               struct net_device *netdev, int freq,
8270                               enum nl80211_channel_type type, gfp_t gfp)
8271 {
8272         struct sk_buff *msg;
8273         void *hdr;
8274
8275         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8276         if (!msg)
8277                 return;
8278
8279         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8280         if (!hdr) {
8281                 nlmsg_free(msg);
8282                 return;
8283         }
8284
8285         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8286             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8287             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type))
8288                 goto nla_put_failure;
8289
8290         genlmsg_end(msg, hdr);
8291
8292         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8293                                 nl80211_mlme_mcgrp.id, gfp);
8294         return;
8295
8296  nla_put_failure:
8297         genlmsg_cancel(msg, hdr);
8298         nlmsg_free(msg);
8299 }
8300
8301 void
8302 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8303                                 struct net_device *netdev, const u8 *peer,
8304                                 u32 num_packets, gfp_t gfp)
8305 {
8306         struct sk_buff *msg;
8307         struct nlattr *pinfoattr;
8308         void *hdr;
8309
8310         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8311         if (!msg)
8312                 return;
8313
8314         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8315         if (!hdr) {
8316                 nlmsg_free(msg);
8317                 return;
8318         }
8319
8320         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8321             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8322             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8323                 goto nla_put_failure;
8324
8325         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8326         if (!pinfoattr)
8327                 goto nla_put_failure;
8328
8329         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
8330                 goto nla_put_failure;
8331
8332         nla_nest_end(msg, pinfoattr);
8333
8334         genlmsg_end(msg, hdr);
8335
8336         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8337                                 nl80211_mlme_mcgrp.id, gfp);
8338         return;
8339
8340  nla_put_failure:
8341         genlmsg_cancel(msg, hdr);
8342         nlmsg_free(msg);
8343 }
8344
8345 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
8346                            u64 cookie, bool acked, gfp_t gfp)
8347 {
8348         struct wireless_dev *wdev = dev->ieee80211_ptr;
8349         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8350         struct sk_buff *msg;
8351         void *hdr;
8352         int err;
8353
8354         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8355         if (!msg)
8356                 return;
8357
8358         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
8359         if (!hdr) {
8360                 nlmsg_free(msg);
8361                 return;
8362         }
8363
8364         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8365             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8366             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8367             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8368             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
8369                 goto nla_put_failure;
8370
8371         err = genlmsg_end(msg, hdr);
8372         if (err < 0) {
8373                 nlmsg_free(msg);
8374                 return;
8375         }
8376
8377         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8378                                 nl80211_mlme_mcgrp.id, gfp);
8379         return;
8380
8381  nla_put_failure:
8382         genlmsg_cancel(msg, hdr);
8383         nlmsg_free(msg);
8384 }
8385 EXPORT_SYMBOL(cfg80211_probe_status);
8386
8387 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8388                                  const u8 *frame, size_t len,
8389                                  int freq, int sig_dbm, gfp_t gfp)
8390 {
8391         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8392         struct sk_buff *msg;
8393         void *hdr;
8394         u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
8395
8396         if (!nlpid)
8397                 return;
8398
8399         msg = nlmsg_new(len + 100, gfp);
8400         if (!msg)
8401                 return;
8402
8403         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8404         if (!hdr) {
8405                 nlmsg_free(msg);
8406                 return;
8407         }
8408
8409         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8410             (freq &&
8411              nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
8412             (sig_dbm &&
8413              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8414             nla_put(msg, NL80211_ATTR_FRAME, len, frame))
8415                 goto nla_put_failure;
8416
8417         genlmsg_end(msg, hdr);
8418
8419         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8420         return;
8421
8422  nla_put_failure:
8423         genlmsg_cancel(msg, hdr);
8424         nlmsg_free(msg);
8425 }
8426 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8427
8428 static int nl80211_netlink_notify(struct notifier_block * nb,
8429                                   unsigned long state,
8430                                   void *_notify)
8431 {
8432         struct netlink_notify *notify = _notify;
8433         struct cfg80211_registered_device *rdev;
8434         struct wireless_dev *wdev;
8435
8436         if (state != NETLINK_URELEASE)
8437                 return NOTIFY_DONE;
8438
8439         rcu_read_lock();
8440
8441         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8442                 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
8443                         cfg80211_mlme_unregister_socket(wdev, notify->pid);
8444                 if (rdev->ap_beacons_nlpid == notify->pid)
8445                         rdev->ap_beacons_nlpid = 0;
8446         }
8447
8448         rcu_read_unlock();
8449
8450         return NOTIFY_DONE;
8451 }
8452
8453 static struct notifier_block nl80211_netlink_notifier = {
8454         .notifier_call = nl80211_netlink_notify,
8455 };
8456
8457 /* initialisation/exit functions */
8458
8459 int nl80211_init(void)
8460 {
8461         int err;
8462
8463         err = genl_register_family_with_ops(&nl80211_fam,
8464                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8465         if (err)
8466                 return err;
8467
8468         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8469         if (err)
8470                 goto err_out;
8471
8472         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8473         if (err)
8474                 goto err_out;
8475
8476         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8477         if (err)
8478                 goto err_out;
8479
8480         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8481         if (err)
8482                 goto err_out;
8483
8484 #ifdef CONFIG_NL80211_TESTMODE
8485         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8486         if (err)
8487                 goto err_out;
8488 #endif
8489
8490         err = netlink_register_notifier(&nl80211_netlink_notifier);
8491         if (err)
8492                 goto err_out;
8493
8494         return 0;
8495  err_out:
8496         genl_unregister_family(&nl80211_fam);
8497         return err;
8498 }
8499
8500 void nl80211_exit(void)
8501 {
8502         netlink_unregister_notifier(&nl80211_netlink_notifier);
8503         genl_unregister_family(&nl80211_fam);
8504 }