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_info_ifindex(struct genl_info *info,
  51                                        struct cfg80211_registered_device **rdev,
  52                                        struct net_device **dev)
  53 {
  54         struct nlattr **attrs = info->attrs;
  55         int ifindex;
  56
  57         if (!attrs[NL80211_ATTR_IFINDEX])
  58                 return -EINVAL;
  59
  60         ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  61         *dev = dev_get_by_index(genl_info_net(info), ifindex);
  62         if (!*dev)
  63                 return -ENODEV;
  64
  65         *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
  66         if (IS_ERR(*rdev)) {
  67                 dev_put(*dev);
  68                 return PTR_ERR(*rdev);
  69         }
  70
  71         return 0;
  72 }
  73
  74 /* policy for the attributes */
  75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
  76         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
  77         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
  78                                       .len = 20-1 },
  79         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
  80         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
  81         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
  82         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
  83         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
  84         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
  85         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
  86         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
  87
  88         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
  89         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
  90         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
  91
  92         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
  93         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
  94
  95         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
  96         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
  97                                     .len = WLAN_MAX_KEY_LEN },
  98         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
  99         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 100         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 101         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
 102         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 103
 104         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 105         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 106         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 107                                        .len = IEEE80211_MAX_DATA_LEN },
 108         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 109                                        .len = IEEE80211_MAX_DATA_LEN },
 110         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 111         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 112         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 113         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 114                                                .len = NL80211_MAX_SUPP_RATES },
 115         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 116         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 117         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 118         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 119                                 .len = IEEE80211_MAX_MESH_ID_LEN },
 120         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 121
 122         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 123         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 124
 125         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 126         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 127         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 128         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 129                                            .len = NL80211_MAX_SUPP_RATES },
 130         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 131
 132         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 133         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 134
 135         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 136
 137         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 138         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 139                               .len = IEEE80211_MAX_DATA_LEN },
 140         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 141         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 142
 143         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 144                                 .len = IEEE80211_MAX_SSID_LEN },
 145         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 146         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 147         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 148         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 149         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 150         [NL80211_ATTR_STA_FLAGS2] = {
 151                 .len = sizeof(struct nl80211_sta_flag_update),
 152         },
 153         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 154         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 155         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 156         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 157         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 158         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 159         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 160         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 161         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 162                                  .len = WLAN_PMKID_LEN },
 163         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 164         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 165         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 166         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 167                                  .len = IEEE80211_MAX_DATA_LEN },
 168         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 169         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 170         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 171         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 172         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 173         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 174         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 175         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 176         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 177         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 178         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 179         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 180         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 181         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 182         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 183         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 184         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 185         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 186         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 187         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 188                                          .len = IEEE80211_MAX_DATA_LEN },
 189         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 190                                          .len = IEEE80211_MAX_DATA_LEN },
 191         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 192         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 193         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 194         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 195         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 196         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 197         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 198         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 199 };
 200
 201 /* policy for the key attributes */
 202 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 203         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 204         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 205         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 206         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
 207         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 208         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 209         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 210         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 211 };
 212
 213 /* policy for the key default flags */
 214 static const struct nla_policy
 215 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 216         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 217         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 218 };
 219
 220 /* policy for WoWLAN attributes */
 221 static const struct nla_policy
 222 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 223         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 224         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 225         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 226         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 227         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 228         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 229         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 230         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 231 };
 232
 233 /* policy for GTK rekey offload attributes */
 234 static const struct nla_policy
 235 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 236         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 237         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 238         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 239 };
 240
 241 static const struct nla_policy
 242 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 243         [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
 244                                                  .len = IEEE80211_MAX_SSID_LEN },
 245 };
 246
 247 /* ifidx get helper */
 248 static int nl80211_get_ifidx(struct netlink_callback *cb)
 249 {
 250         int res;
 251
 252         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 253                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
 254                           nl80211_policy);
 255         if (res)
 256                 return res;
 257
 258         if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
 259                 return -EINVAL;
 260
 261         res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
 262         if (!res)
 263                 return -EINVAL;
 264         return res;
 265 }
 266
 267 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
 268                                        struct netlink_callback *cb,
 269                                        struct cfg80211_registered_device **rdev,
 270                                        struct net_device **dev)
 271 {
 272         int ifidx = cb->args[0];
 273         int err;
 274
 275         if (!ifidx)
 276                 ifidx = nl80211_get_ifidx(cb);
 277         if (ifidx < 0)
 278                 return ifidx;
 279
 280         cb->args[0] = ifidx;
 281
 282         rtnl_lock();
 283
 284         *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
 285         if (!*dev) {
 286                 err = -ENODEV;
 287                 goto out_rtnl;
 288         }
 289
 290         *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
 291         if (IS_ERR(*rdev)) {
 292                 err = PTR_ERR(*rdev);
 293                 goto out_rtnl;
 294         }
 295
 296         return 0;
 297  out_rtnl:
 298         rtnl_unlock();
 299         return err;
 300 }
 301
 302 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
 303 {
 304         cfg80211_unlock_rdev(rdev);
 305         rtnl_unlock();
 306 }
 307
 308 /* IE validation */
 309 static bool is_valid_ie_attr(const struct nlattr *attr)
 310 {
 311         const u8 *pos;
 312         int len;
 313
 314         if (!attr)
 315                 return true;
 316
 317         pos = nla_data(attr);
 318         len = nla_len(attr);
 319
 320         while (len) {
 321                 u8 elemlen;
 322
 323                 if (len < 2)
 324                         return false;
 325                 len -= 2;
 326
 327                 elemlen = pos[1];
 328                 if (elemlen > len)
 329                         return false;
 330
 331                 len -= elemlen;
 332                 pos += 2 + elemlen;
 333         }
 334
 335         return true;
 336 }
 337
 338 /* message building helper */
 339 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
 340                                    int flags, u8 cmd)
 341 {
 342         /* since there is no private header just add the generic one */
 343         return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
 344 }
 345
 346 static int nl80211_msg_put_channel(struct sk_buff *msg,
 347                                    struct ieee80211_channel *chan)
 348 {
 349         NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 350                     chan->center_freq);
 351
 352         if (chan->flags & IEEE80211_CHAN_DISABLED)
 353                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
 354         if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
 355                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
 356         if (chan->flags & IEEE80211_CHAN_NO_IBSS)
 357                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
 358         if (chan->flags & IEEE80211_CHAN_RADAR)
 359                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
 360
 361         NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 362                     DBM_TO_MBM(chan->max_power));
 363
 364         return 0;
 365
 366  nla_put_failure:
 367         return -ENOBUFS;
 368 }
 369
 370 /* netlink command implementations */
 371
 372 struct key_parse {
 373         struct key_params p;
 374         int idx;
 375         int type;
 376         bool def, defmgmt;
 377         bool def_uni, def_multi;
 378 };
 379
 380 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 381 {
 382         struct nlattr *tb[NL80211_KEY_MAX + 1];
 383         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 384                                    nl80211_key_policy);
 385         if (err)
 386                 return err;
 387
 388         k->def = !!tb[NL80211_KEY_DEFAULT];
 389         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 390
 391         if (k->def) {
 392                 k->def_uni = true;
 393                 k->def_multi = true;
 394         }
 395         if (k->defmgmt)
 396                 k->def_multi = true;
 397
 398         if (tb[NL80211_KEY_IDX])
 399                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 400
 401         if (tb[NL80211_KEY_DATA]) {
 402                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 403                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 404         }
 405
 406         if (tb[NL80211_KEY_SEQ]) {
 407                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 408                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 409         }
 410
 411         if (tb[NL80211_KEY_CIPHER])
 412                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 413
 414         if (tb[NL80211_KEY_TYPE]) {
 415                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 416                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 417                         return -EINVAL;
 418         }
 419
 420         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 421                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 422                 int err = nla_parse_nested(kdt,
 423                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 424                                            tb[NL80211_KEY_DEFAULT_TYPES],
 425                                            nl80211_key_default_policy);
 426                 if (err)
 427                         return err;
 428
 429                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 430                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 431         }
 432
 433         return 0;
 434 }
 435
 436 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 437 {
 438         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 439                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 440                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 441         }
 442
 443         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 444                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 445                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 446         }
 447
 448         if (info->attrs[NL80211_ATTR_KEY_IDX])
 449                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 450
 451         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 452                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 453
 454         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 455         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 456
 457         if (k->def) {
 458                 k->def_uni = true;
 459                 k->def_multi = true;
 460         }
 461         if (k->defmgmt)
 462                 k->def_multi = true;
 463
 464         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 465                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 466                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 467                         return -EINVAL;
 468         }
 469
 470         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 471                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 472                 int err = nla_parse_nested(
 473                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 474                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 475                                 nl80211_key_default_policy);
 476                 if (err)
 477                         return err;
 478
 479                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 480                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 481         }
 482
 483         return 0;
 484 }
 485
 486 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 487 {
 488         int err;
 489
 490         memset(k, 0, sizeof(*k));
 491         k->idx = -1;
 492         k->type = -1;
 493
 494         if (info->attrs[NL80211_ATTR_KEY])
 495                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 496         else
 497                 err = nl80211_parse_key_old(info, k);
 498
 499         if (err)
 500                 return err;
 501
 502         if (k->def && k->defmgmt)
 503                 return -EINVAL;
 504
 505         if (k->defmgmt) {
 506                 if (k->def_uni || !k->def_multi)
 507                         return -EINVAL;
 508         }
 509
 510         if (k->idx != -1) {
 511                 if (k->defmgmt) {
 512                         if (k->idx < 4 || k->idx > 5)
 513                                 return -EINVAL;
 514                 } else if (k->def) {
 515                         if (k->idx < 0 || k->idx > 3)
 516                                 return -EINVAL;
 517                 } else {
 518                         if (k->idx < 0 || k->idx > 5)
 519                                 return -EINVAL;
 520                 }
 521         }
 522
 523         return 0;
 524 }
 525
 526 static struct cfg80211_cached_keys *
 527 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 528                        struct nlattr *keys)
 529 {
 530         struct key_parse parse;
 531         struct nlattr *key;
 532         struct cfg80211_cached_keys *result;
 533         int rem, err, def = 0;
 534
 535         result = kzalloc(sizeof(*result), GFP_KERNEL);
 536         if (!result)
 537                 return ERR_PTR(-ENOMEM);
 538
 539         result->def = -1;
 540         result->defmgmt = -1;
 541
 542         nla_for_each_nested(key, keys, rem) {
 543                 memset(&parse, 0, sizeof(parse));
 544                 parse.idx = -1;
 545
 546                 err = nl80211_parse_key_new(key, &parse);
 547                 if (err)
 548                         goto error;
 549                 err = -EINVAL;
 550                 if (!parse.p.key)
 551                         goto error;
 552                 if (parse.idx < 0 || parse.idx > 4)
 553                         goto error;
 554                 if (parse.def) {
 555                         if (def)
 556                                 goto error;
 557                         def = 1;
 558                         result->def = parse.idx;
 559                         if (!parse.def_uni || !parse.def_multi)
 560                                 goto error;
 561                 } else if (parse.defmgmt)
 562                         goto error;
 563                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 564                                                      parse.idx, false, NULL);
 565                 if (err)
 566                         goto error;
 567                 result->params[parse.idx].cipher = parse.p.cipher;
 568                 result->params[parse.idx].key_len = parse.p.key_len;
 569                 result->params[parse.idx].key = result->data[parse.idx];
 570                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 571         }
 572
 573         return result;
 574  error:
 575         kfree(result);
 576         return ERR_PTR(err);
 577 }
 578
 579 static int nl80211_key_allowed(struct wireless_dev *wdev)
 580 {
 581         ASSERT_WDEV_LOCK(wdev);
 582
 583         switch (wdev->iftype) {
 584         case NL80211_IFTYPE_AP:
 585         case NL80211_IFTYPE_AP_VLAN:
 586         case NL80211_IFTYPE_P2P_GO:
 587         case NL80211_IFTYPE_MESH_POINT:
 588                 break;
 589         case NL80211_IFTYPE_ADHOC:
 590                 if (!wdev->current_bss)
 591                         return -ENOLINK;
 592                 break;
 593         case NL80211_IFTYPE_STATION:
 594         case NL80211_IFTYPE_P2P_CLIENT:
 595                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
 596                         return -ENOLINK;
 597                 break;
 598         default:
 599                 return -EINVAL;
 600         }
 601
 602         return 0;
 603 }
 604
 605 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 606 {
 607         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 608         int i;
 609
 610         if (!nl_modes)
 611                 goto nla_put_failure;
 612
 613         i = 0;
 614         while (ifmodes) {
 615                 if (ifmodes & 1)
 616                         NLA_PUT_FLAG(msg, i);
 617                 ifmodes >>= 1;
 618                 i++;
 619         }
 620
 621         nla_nest_end(msg, nl_modes);
 622         return 0;
 623
 624 nla_put_failure:
 625         return -ENOBUFS;
 626 }
 627
 628 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 629                                           struct sk_buff *msg)
 630 {
 631         struct nlattr *nl_combis;
 632         int i, j;
 633
 634         nl_combis = nla_nest_start(msg,
 635                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 636         if (!nl_combis)
 637                 goto nla_put_failure;
 638
 639         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 640                 const struct ieee80211_iface_combination *c;
 641                 struct nlattr *nl_combi, *nl_limits;
 642
 643                 c = &wiphy->iface_combinations[i];
 644
 645                 nl_combi = nla_nest_start(msg, i + 1);
 646                 if (!nl_combi)
 647                         goto nla_put_failure;
 648
 649                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 650                 if (!nl_limits)
 651                         goto nla_put_failure;
 652
 653                 for (j = 0; j < c->n_limits; j++) {
 654                         struct nlattr *nl_limit;
 655
 656                         nl_limit = nla_nest_start(msg, j + 1);
 657                         if (!nl_limit)
 658                                 goto nla_put_failure;
 659                         NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
 660                                     c->limits[j].max);
 661                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 662                                                 c->limits[j].types))
 663                                 goto nla_put_failure;
 664                         nla_nest_end(msg, nl_limit);
 665                 }
 666
 667                 nla_nest_end(msg, nl_limits);
 668
 669                 if (c->beacon_int_infra_match)
 670                         NLA_PUT_FLAG(msg,
 671                                 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
 672                 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 673                             c->num_different_channels);
 674                 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
 675                             c->max_interfaces);
 676
 677                 nla_nest_end(msg, nl_combi);
 678         }
 679
 680         nla_nest_end(msg, nl_combis);
 681
 682         return 0;
 683 nla_put_failure:
 684         return -ENOBUFS;
 685 }
 686
 687 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 688                               struct cfg80211_registered_device *dev)
 689 {
 690         void *hdr;
 691         struct nlattr *nl_bands, *nl_band;
 692         struct nlattr *nl_freqs, *nl_freq;
 693         struct nlattr *nl_rates, *nl_rate;
 694         struct nlattr *nl_cmds;
 695         enum ieee80211_band band;
 696         struct ieee80211_channel *chan;
 697         struct ieee80211_rate *rate;
 698         int i;
 699         const struct ieee80211_txrx_stypes *mgmt_stypes =
 700                                 dev->wiphy.mgmt_stypes;
 701
 702         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
 703         if (!hdr)
 704                 return -1;
 705
 706         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
 707         NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
 708
 709         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
 710                     cfg80211_rdev_list_generation);
 711
 712         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
 713                    dev->wiphy.retry_short);
 714         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
 715                    dev->wiphy.retry_long);
 716         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
 717                     dev->wiphy.frag_threshold);
 718         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
 719                     dev->wiphy.rts_threshold);
 720         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
 721                     dev->wiphy.coverage_class);
 722         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
 723                    dev->wiphy.max_scan_ssids);
 724         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
 725                    dev->wiphy.max_sched_scan_ssids);
 726         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
 727                     dev->wiphy.max_scan_ie_len);
 728         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
 729                     dev->wiphy.max_sched_scan_ie_len);
 730         NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
 731                    dev->wiphy.max_match_sets);
 732
 733         if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
 734                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
 735         if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
 736                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
 737         if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
 738                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
 739         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
 740                 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
 741         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
 742                 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
 743         if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
 744                 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
 745
 746         NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
 747                 sizeof(u32) * dev->wiphy.n_cipher_suites,
 748                 dev->wiphy.cipher_suites);
 749
 750         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
 751                    dev->wiphy.max_num_pmkids);
 752
 753         if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
 754                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
 755
 756         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
 757                     dev->wiphy.available_antennas_tx);
 758         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
 759                     dev->wiphy.available_antennas_rx);
 760
 761         if ((dev->wiphy.available_antennas_tx ||
 762              dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
 763                 u32 tx_ant = 0, rx_ant = 0;
 764                 int res;
 765                 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
 766                 if (!res) {
 767                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
 768                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
 769                 }
 770         }
 771
 772         if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
 773                                 dev->wiphy.interface_modes))
 774                 goto nla_put_failure;
 775
 776         nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
 777         if (!nl_bands)
 778                 goto nla_put_failure;
 779
 780         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 781                 if (!dev->wiphy.bands[band])
 782                         continue;
 783
 784                 nl_band = nla_nest_start(msg, band);
 785                 if (!nl_band)
 786                         goto nla_put_failure;
 787
 788                 /* add HT info */
 789                 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
 790                         NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
 791                                 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
 792                                 &dev->wiphy.bands[band]->ht_cap.mcs);
 793                         NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
 794                                 dev->wiphy.bands[band]->ht_cap.cap);
 795                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
 796                                 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
 797                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
 798                                 dev->wiphy.bands[band]->ht_cap.ampdu_density);
 799                 }
 800
 801                 /* add frequencies */
 802                 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
 803                 if (!nl_freqs)
 804                         goto nla_put_failure;
 805
 806                 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
 807                         nl_freq = nla_nest_start(msg, i);
 808                         if (!nl_freq)
 809                                 goto nla_put_failure;
 810
 811                         chan = &dev->wiphy.bands[band]->channels[i];
 812
 813                         if (nl80211_msg_put_channel(msg, chan))
 814                                 goto nla_put_failure;
 815
 816                         nla_nest_end(msg, nl_freq);
 817                 }
 818
 819                 nla_nest_end(msg, nl_freqs);
 820
 821                 /* add bitrates */
 822                 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
 823                 if (!nl_rates)
 824                         goto nla_put_failure;
 825
 826                 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
 827                         nl_rate = nla_nest_start(msg, i);
 828                         if (!nl_rate)
 829                                 goto nla_put_failure;
 830
 831                         rate = &dev->wiphy.bands[band]->bitrates[i];
 832                         NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
 833                                     rate->bitrate);
 834                         if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
 835                                 NLA_PUT_FLAG(msg,
 836                                         NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
 837
 838                         nla_nest_end(msg, nl_rate);
 839                 }
 840
 841                 nla_nest_end(msg, nl_rates);
 842
 843                 nla_nest_end(msg, nl_band);
 844         }
 845         nla_nest_end(msg, nl_bands);
 846
 847         nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
 848         if (!nl_cmds)
 849                 goto nla_put_failure;
 850
 851         i = 0;
 852 #define CMD(op, n)                                              \
 853          do {                                                   \
 854                 if (dev->ops->op) {                             \
 855                         i++;                                    \
 856                         NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
 857                 }                                               \
 858         } while (0)
 859
 860         CMD(add_virtual_intf, NEW_INTERFACE);
 861         CMD(change_virtual_intf, SET_INTERFACE);
 862         CMD(add_key, NEW_KEY);
 863         CMD(add_beacon, NEW_BEACON);
 864         CMD(add_station, NEW_STATION);
 865         CMD(add_mpath, NEW_MPATH);
 866         CMD(update_mesh_config, SET_MESH_CONFIG);
 867         CMD(change_bss, SET_BSS);
 868         CMD(auth, AUTHENTICATE);
 869         CMD(assoc, ASSOCIATE);
 870         CMD(deauth, DEAUTHENTICATE);
 871         CMD(disassoc, DISASSOCIATE);
 872         CMD(join_ibss, JOIN_IBSS);
 873         CMD(join_mesh, JOIN_MESH);
 874         CMD(set_pmksa, SET_PMKSA);
 875         CMD(del_pmksa, DEL_PMKSA);
 876         CMD(flush_pmksa, FLUSH_PMKSA);
 877         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
 878         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
 879         CMD(mgmt_tx, FRAME);
 880         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
 881         if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
 882                 i++;
 883                 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
 884         }
 885         CMD(set_channel, SET_CHANNEL);
 886         CMD(set_wds_peer, SET_WDS_PEER);
 887         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
 888                 CMD(tdls_mgmt, TDLS_MGMT);
 889                 CMD(tdls_oper, TDLS_OPER);
 890         }
 891         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
 892                 CMD(sched_scan_start, START_SCHED_SCAN);
 893
 894 #undef CMD
 895
 896         if (dev->ops->connect || dev->ops->auth) {
 897                 i++;
 898                 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
 899         }
 900
 901         if (dev->ops->disconnect || dev->ops->deauth) {
 902                 i++;
 903                 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
 904         }
 905
 906         nla_nest_end(msg, nl_cmds);
 907
 908         if (dev->ops->remain_on_channel)
 909                 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
 910                             dev->wiphy.max_remain_on_channel_duration);
 911
 912         if (dev->ops->mgmt_tx_cancel_wait)
 913                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
 914
 915         if (mgmt_stypes) {
 916                 u16 stypes;
 917                 struct nlattr *nl_ftypes, *nl_ifs;
 918                 enum nl80211_iftype ift;
 919
 920                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
 921                 if (!nl_ifs)
 922                         goto nla_put_failure;
 923
 924                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
 925                         nl_ftypes = nla_nest_start(msg, ift);
 926                         if (!nl_ftypes)
 927                                 goto nla_put_failure;
 928                         i = 0;
 929                         stypes = mgmt_stypes[ift].tx;
 930                         while (stypes) {
 931                                 if (stypes & 1)
 932                                         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
 933                                                     (i << 4) | IEEE80211_FTYPE_MGMT);
 934                                 stypes >>= 1;
 935                                 i++;
 936                         }
 937                         nla_nest_end(msg, nl_ftypes);
 938                 }
 939
 940                 nla_nest_end(msg, nl_ifs);
 941
 942                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
 943                 if (!nl_ifs)
 944                         goto nla_put_failure;
 945
 946                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
 947                         nl_ftypes = nla_nest_start(msg, ift);
 948                         if (!nl_ftypes)
 949                                 goto nla_put_failure;
 950                         i = 0;
 951                         stypes = mgmt_stypes[ift].rx;
 952                         while (stypes) {
 953                                 if (stypes & 1)
 954                                         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
 955                                                     (i << 4) | IEEE80211_FTYPE_MGMT);
 956                                 stypes >>= 1;
 957                                 i++;
 958                         }
 959                         nla_nest_end(msg, nl_ftypes);
 960                 }
 961                 nla_nest_end(msg, nl_ifs);
 962         }
 963
 964         if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
 965                 struct nlattr *nl_wowlan;
 966
 967                 nl_wowlan = nla_nest_start(msg,
 968                                 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 969                 if (!nl_wowlan)
 970                         goto nla_put_failure;
 971
 972                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
 973                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
 974                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
 975                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
 976                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
 977                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
 978                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
 979                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
 980                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
 981                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
 982                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
 983                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
 984                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
 985                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
 986                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
 987                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
 988                 if (dev->wiphy.wowlan.n_patterns) {
 989                         struct nl80211_wowlan_pattern_support pat = {
 990                                 .max_patterns = dev->wiphy.wowlan.n_patterns,
 991                                 .min_pattern_len =
 992                                         dev->wiphy.wowlan.pattern_min_len,
 993                                 .max_pattern_len =
 994                                         dev->wiphy.wowlan.pattern_max_len,
 995                         };
 996                         NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 997                                 sizeof(pat), &pat);
 998                 }
 999
1000                 nla_nest_end(msg, nl_wowlan);
1001         }
1002
1003         if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1004                                 dev->wiphy.software_iftypes))
1005                 goto nla_put_failure;
1006
1007         if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1008                 goto nla_put_failure;
1009
1010         return genlmsg_end(msg, hdr);
1011
1012  nla_put_failure:
1013         genlmsg_cancel(msg, hdr);
1014         return -EMSGSIZE;
1015 }
1016
1017 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1018 {
1019         int idx = 0;
1020         int start = cb->args[0];
1021         struct cfg80211_registered_device *dev;
1022
1023         mutex_lock(&cfg80211_mutex);
1024         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1025                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1026                         continue;
1027                 if (++idx <= start)
1028                         continue;
1029                 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1030                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
1031                                        dev) < 0) {
1032                         idx--;
1033                         break;
1034                 }
1035         }
1036         mutex_unlock(&cfg80211_mutex);
1037
1038         cb->args[0] = idx;
1039
1040         return skb->len;
1041 }
1042
1043 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1044 {
1045         struct sk_buff *msg;
1046         struct cfg80211_registered_device *dev = info->user_ptr[0];
1047
1048         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1049         if (!msg)
1050                 return -ENOMEM;
1051
1052         if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1053                 nlmsg_free(msg);
1054                 return -ENOBUFS;
1055         }
1056
1057         return genlmsg_reply(msg, info);
1058 }
1059
1060 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1061         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1062         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1063         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1064         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1065         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1066 };
1067
1068 static int parse_txq_params(struct nlattr *tb[],
1069                             struct ieee80211_txq_params *txq_params)
1070 {
1071         if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1072             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1073             !tb[NL80211_TXQ_ATTR_AIFS])
1074                 return -EINVAL;
1075
1076         txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1077         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1078         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1079         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1080         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1081
1082         return 0;
1083 }
1084
1085 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1086 {
1087         /*
1088          * You can only set the channel explicitly for AP, mesh
1089          * and WDS type interfaces; all others have their channel
1090          * managed via their respective "establish a connection"
1091          * command (connect, join, ...)
1092          *
1093          * Monitors are special as they are normally slaved to
1094          * whatever else is going on, so they behave as though
1095          * you tried setting the wiphy channel itself.
1096          */
1097         return !wdev ||
1098                 wdev->iftype == NL80211_IFTYPE_AP ||
1099                 wdev->iftype == NL80211_IFTYPE_WDS ||
1100                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1101                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1102                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1103 }
1104
1105 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1106                                  struct wireless_dev *wdev,
1107                                  struct genl_info *info)
1108 {
1109         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1110         u32 freq;
1111         int result;
1112
1113         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1114                 return -EINVAL;
1115
1116         if (!nl80211_can_set_dev_channel(wdev))
1117                 return -EOPNOTSUPP;
1118
1119         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1120                 channel_type = nla_get_u32(info->attrs[
1121                                    NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1122                 if (channel_type != NL80211_CHAN_NO_HT &&
1123                     channel_type != NL80211_CHAN_HT20 &&
1124                     channel_type != NL80211_CHAN_HT40PLUS &&
1125                     channel_type != NL80211_CHAN_HT40MINUS)
1126                         return -EINVAL;
1127         }
1128
1129         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1130
1131         mutex_lock(&rdev->devlist_mtx);
1132         if (wdev) {
1133                 wdev_lock(wdev);
1134                 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1135                 wdev_unlock(wdev);
1136         } else {
1137                 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1138         }
1139         mutex_unlock(&rdev->devlist_mtx);
1140
1141         return result;
1142 }
1143
1144 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1145 {
1146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1147         struct net_device *netdev = info->user_ptr[1];
1148
1149         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1150 }
1151
1152 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1153 {
1154         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1155         struct net_device *dev = info->user_ptr[1];
1156         struct wireless_dev *wdev = dev->ieee80211_ptr;
1157         const u8 *bssid;
1158
1159         if (!info->attrs[NL80211_ATTR_MAC])
1160                 return -EINVAL;
1161
1162         if (netif_running(dev))
1163                 return -EBUSY;
1164
1165         if (!rdev->ops->set_wds_peer)
1166                 return -EOPNOTSUPP;
1167
1168         if (wdev->iftype != NL80211_IFTYPE_WDS)
1169                 return -EOPNOTSUPP;
1170
1171         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1172         return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1173 }
1174
1175
1176 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1177 {
1178         struct cfg80211_registered_device *rdev;
1179         struct net_device *netdev = NULL;
1180         struct wireless_dev *wdev;
1181         int result = 0, rem_txq_params = 0;
1182         struct nlattr *nl_txq_params;
1183         u32 changed;
1184         u8 retry_short = 0, retry_long = 0;
1185         u32 frag_threshold = 0, rts_threshold = 0;
1186         u8 coverage_class = 0;
1187
1188         /*
1189          * Try to find the wiphy and netdev. Normally this
1190          * function shouldn't need the netdev, but this is
1191          * done for backward compatibility -- previously
1192          * setting the channel was done per wiphy, but now
1193          * it is per netdev. Previous userland like hostapd
1194          * also passed a netdev to set_wiphy, so that it is
1195          * possible to let that go to the right netdev!
1196          */
1197         mutex_lock(&cfg80211_mutex);
1198
1199         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1200                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1201
1202                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1203                 if (netdev && netdev->ieee80211_ptr) {
1204                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1205                         mutex_lock(&rdev->mtx);
1206                 } else
1207                         netdev = NULL;
1208         }
1209
1210         if (!netdev) {
1211                 rdev = __cfg80211_rdev_from_info(info);
1212                 if (IS_ERR(rdev)) {
1213                         mutex_unlock(&cfg80211_mutex);
1214                         return PTR_ERR(rdev);
1215                 }
1216                 wdev = NULL;
1217                 netdev = NULL;
1218                 result = 0;
1219
1220                 mutex_lock(&rdev->mtx);
1221         } else if (netif_running(netdev) &&
1222                    nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1223                 wdev = netdev->ieee80211_ptr;
1224         else
1225                 wdev = NULL;
1226
1227         /*
1228          * end workaround code, by now the rdev is available
1229          * and locked, and wdev may or may not be NULL.
1230          */
1231
1232         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1233                 result = cfg80211_dev_rename(
1234                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1235
1236         mutex_unlock(&cfg80211_mutex);
1237
1238         if (result)
1239                 goto bad_res;
1240
1241         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1242                 struct ieee80211_txq_params txq_params;
1243                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1244
1245                 if (!rdev->ops->set_txq_params) {
1246                         result = -EOPNOTSUPP;
1247                         goto bad_res;
1248                 }
1249
1250                 if (!netdev) {
1251                         result = -EINVAL;
1252                         goto bad_res;
1253                 }
1254
1255                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1256                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1257                         result = -EINVAL;
1258                         goto bad_res;
1259                 }
1260
1261                 nla_for_each_nested(nl_txq_params,
1262                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1263                                     rem_txq_params) {
1264                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1265                                   nla_data(nl_txq_params),
1266                                   nla_len(nl_txq_params),
1267                                   txq_params_policy);
1268                         result = parse_txq_params(tb, &txq_params);
1269                         if (result)
1270                                 goto bad_res;
1271
1272                         result = rdev->ops->set_txq_params(&rdev->wiphy,
1273                                                            netdev,
1274                                                            &txq_params);
1275                         if (result)
1276                                 goto bad_res;
1277                 }
1278         }
1279
1280         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1281                 result = __nl80211_set_channel(rdev, wdev, info);
1282                 if (result)
1283                         goto bad_res;
1284         }
1285
1286         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1287                 enum nl80211_tx_power_setting type;
1288                 int idx, mbm = 0;
1289
1290                 if (!rdev->ops->set_tx_power) {
1291                         result = -EOPNOTSUPP;
1292                         goto bad_res;
1293                 }
1294
1295                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1296                 type = nla_get_u32(info->attrs[idx]);
1297
1298                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1299                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1300                         result = -EINVAL;
1301                         goto bad_res;
1302                 }
1303
1304                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1305                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1306                         mbm = nla_get_u32(info->attrs[idx]);
1307                 }
1308
1309                 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1310                 if (result)
1311                         goto bad_res;
1312         }
1313
1314         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1315             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1316                 u32 tx_ant, rx_ant;
1317                 if ((!rdev->wiphy.available_antennas_tx &&
1318                      !rdev->wiphy.available_antennas_rx) ||
1319                     !rdev->ops->set_antenna) {
1320                         result = -EOPNOTSUPP;
1321                         goto bad_res;
1322                 }
1323
1324                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1325                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1326
1327                 /* reject antenna configurations which don't match the
1328                  * available antenna masks, except for the "all" mask */
1329                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1330                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1331                         result = -EINVAL;
1332                         goto bad_res;
1333                 }
1334
1335                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1336                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1337
1338                 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1339                 if (result)
1340                         goto bad_res;
1341         }
1342
1343         changed = 0;
1344
1345         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1346                 retry_short = nla_get_u8(
1347                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1348                 if (retry_short == 0) {
1349                         result = -EINVAL;
1350                         goto bad_res;
1351                 }
1352                 changed |= WIPHY_PARAM_RETRY_SHORT;
1353         }
1354
1355         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1356                 retry_long = nla_get_u8(
1357                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1358                 if (retry_long == 0) {
1359                         result = -EINVAL;
1360                         goto bad_res;
1361                 }
1362                 changed |= WIPHY_PARAM_RETRY_LONG;
1363         }
1364
1365         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1366                 frag_threshold = nla_get_u32(
1367                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1368                 if (frag_threshold < 256) {
1369                         result = -EINVAL;
1370                         goto bad_res;
1371                 }
1372                 if (frag_threshold != (u32) -1) {
1373                         /*
1374                          * Fragments (apart from the last one) are required to
1375                          * have even length. Make the fragmentation code
1376                          * simpler by stripping LSB should someone try to use
1377                          * odd threshold value.
1378                          */
1379                         frag_threshold &= ~0x1;
1380                 }
1381                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1382         }
1383
1384         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1385                 rts_threshold = nla_get_u32(
1386                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1387                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1388         }
1389
1390         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1391                 coverage_class = nla_get_u8(
1392                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1393                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1394         }
1395
1396         if (changed) {
1397                 u8 old_retry_short, old_retry_long;
1398                 u32 old_frag_threshold, old_rts_threshold;
1399                 u8 old_coverage_class;
1400
1401                 if (!rdev->ops->set_wiphy_params) {
1402                         result = -EOPNOTSUPP;
1403                         goto bad_res;
1404                 }
1405
1406                 old_retry_short = rdev->wiphy.retry_short;
1407                 old_retry_long = rdev->wiphy.retry_long;
1408                 old_frag_threshold = rdev->wiphy.frag_threshold;
1409                 old_rts_threshold = rdev->wiphy.rts_threshold;
1410                 old_coverage_class = rdev->wiphy.coverage_class;
1411
1412                 if (changed & WIPHY_PARAM_RETRY_SHORT)
1413                         rdev->wiphy.retry_short = retry_short;
1414                 if (changed & WIPHY_PARAM_RETRY_LONG)
1415                         rdev->wiphy.retry_long = retry_long;
1416                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1417                         rdev->wiphy.frag_threshold = frag_threshold;
1418                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1419                         rdev->wiphy.rts_threshold = rts_threshold;
1420                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1421                         rdev->wiphy.coverage_class = coverage_class;
1422
1423                 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1424                 if (result) {
1425                         rdev->wiphy.retry_short = old_retry_short;
1426                         rdev->wiphy.retry_long = old_retry_long;
1427                         rdev->wiphy.frag_threshold = old_frag_threshold;
1428                         rdev->wiphy.rts_threshold = old_rts_threshold;
1429                         rdev->wiphy.coverage_class = old_coverage_class;
1430                 }
1431         }
1432
1433  bad_res:
1434         mutex_unlock(&rdev->mtx);
1435         if (netdev)
1436                 dev_put(netdev);
1437         return result;
1438 }
1439
1440
1441 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1442                               struct cfg80211_registered_device *rdev,
1443                               struct net_device *dev)
1444 {
1445         void *hdr;
1446
1447         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1448         if (!hdr)
1449                 return -1;
1450
1451         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1452         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1453         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1454         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1455
1456         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1457                     rdev->devlist_generation ^
1458                         (cfg80211_rdev_list_generation << 2));
1459
1460         return genlmsg_end(msg, hdr);
1461
1462  nla_put_failure:
1463         genlmsg_cancel(msg, hdr);
1464         return -EMSGSIZE;
1465 }
1466
1467 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1468 {
1469         int wp_idx = 0;
1470         int if_idx = 0;
1471         int wp_start = cb->args[0];
1472         int if_start = cb->args[1];
1473         struct cfg80211_registered_device *rdev;
1474         struct wireless_dev *wdev;
1475
1476         mutex_lock(&cfg80211_mutex);
1477         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1478                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1479                         continue;
1480                 if (wp_idx < wp_start) {
1481                         wp_idx++;
1482                         continue;
1483                 }
1484                 if_idx = 0;
1485
1486                 mutex_lock(&rdev->devlist_mtx);
1487                 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1488                         if (if_idx < if_start) {
1489                                 if_idx++;
1490                                 continue;
1491                         }
1492                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1493                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
1494                                                rdev, wdev->netdev) < 0) {
1495                                 mutex_unlock(&rdev->devlist_mtx);
1496                                 goto out;
1497                         }
1498                         if_idx++;
1499                 }
1500                 mutex_unlock(&rdev->devlist_mtx);
1501
1502                 wp_idx++;
1503         }
1504  out:
1505         mutex_unlock(&cfg80211_mutex);
1506
1507         cb->args[0] = wp_idx;
1508         cb->args[1] = if_idx;
1509
1510         return skb->len;
1511 }
1512
1513 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1514 {
1515         struct sk_buff *msg;
1516         struct cfg80211_registered_device *dev = info->user_ptr[0];
1517         struct net_device *netdev = info->user_ptr[1];
1518
1519         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1520         if (!msg)
1521                 return -ENOMEM;
1522
1523         if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1524                                dev, netdev) < 0) {
1525                 nlmsg_free(msg);
1526                 return -ENOBUFS;
1527         }
1528
1529         return genlmsg_reply(msg, info);
1530 }
1531
1532 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1533         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1534         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1535         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1536         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1537         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1538 };
1539
1540 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1541 {
1542         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1543         int flag;
1544
1545         *mntrflags = 0;
1546
1547         if (!nla)
1548                 return -EINVAL;
1549
1550         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1551                              nla, mntr_flags_policy))
1552                 return -EINVAL;
1553
1554         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1555                 if (flags[flag])
1556                         *mntrflags |= (1<<flag);
1557
1558         return 0;
1559 }
1560
1561 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1562                                struct net_device *netdev, u8 use_4addr,
1563                                enum nl80211_iftype iftype)
1564 {
1565         if (!use_4addr) {
1566                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1567                         return -EBUSY;
1568                 return 0;
1569         }
1570
1571         switch (iftype) {
1572         case NL80211_IFTYPE_AP_VLAN:
1573                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1574                         return 0;
1575                 break;
1576         case NL80211_IFTYPE_STATION:
1577                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1578                         return 0;
1579                 break;
1580         default:
1581                 break;
1582         }
1583
1584         return -EOPNOTSUPP;
1585 }
1586
1587 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1588 {
1589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1590         struct vif_params params;
1591         int err;
1592         enum nl80211_iftype otype, ntype;
1593         struct net_device *dev = info->user_ptr[1];
1594         u32 _flags, *flags = NULL;
1595         bool change = false;
1596
1597         memset(&params, 0, sizeof(params));
1598
1599         otype = ntype = dev->ieee80211_ptr->iftype;
1600
1601         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1602                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1603                 if (otype != ntype)
1604                         change = true;
1605                 if (ntype > NL80211_IFTYPE_MAX)
1606                         return -EINVAL;
1607         }
1608
1609         if (info->attrs[NL80211_ATTR_MESH_ID]) {
1610                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1611
1612                 if (ntype != NL80211_IFTYPE_MESH_POINT)
1613                         return -EINVAL;
1614                 if (netif_running(dev))
1615                         return -EBUSY;
1616
1617                 wdev_lock(wdev);
1618                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1619                              IEEE80211_MAX_MESH_ID_LEN);
1620                 wdev->mesh_id_up_len =
1621                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1622                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1623                        wdev->mesh_id_up_len);
1624                 wdev_unlock(wdev);
1625         }
1626
1627         if (info->attrs[NL80211_ATTR_4ADDR]) {
1628                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1629                 change = true;
1630                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1631                 if (err)
1632                         return err;
1633         } else {
1634                 params.use_4addr = -1;
1635         }
1636
1637         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1638                 if (ntype != NL80211_IFTYPE_MONITOR)
1639                         return -EINVAL;
1640                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1641                                           &_flags);
1642                 if (err)
1643                         return err;
1644
1645                 flags = &_flags;
1646                 change = true;
1647         }
1648
1649         if (change)
1650                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1651         else
1652                 err = 0;
1653
1654         if (!err && params.use_4addr != -1)
1655                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1656
1657         return err;
1658 }
1659
1660 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1661 {
1662         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1663         struct vif_params params;
1664         struct net_device *dev;
1665         int err;
1666         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1667         u32 flags;
1668
1669         memset(&params, 0, sizeof(params));
1670
1671         if (!info->attrs[NL80211_ATTR_IFNAME])
1672                 return -EINVAL;
1673
1674         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1675                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1676                 if (type > NL80211_IFTYPE_MAX)
1677                         return -EINVAL;
1678         }
1679
1680         if (!rdev->ops->add_virtual_intf ||
1681             !(rdev->wiphy.interface_modes & (1 << type)))
1682                 return -EOPNOTSUPP;
1683
1684         if (info->attrs[NL80211_ATTR_4ADDR]) {
1685                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1686                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1687                 if (err)
1688                         return err;
1689         }
1690
1691         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1692                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1693                                   &flags);
1694         dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1695                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1696                 type, err ? NULL : &flags, &params);
1697         if (IS_ERR(dev))
1698                 return PTR_ERR(dev);
1699
1700         if (type == NL80211_IFTYPE_MESH_POINT &&
1701             info->attrs[NL80211_ATTR_MESH_ID]) {
1702                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1703
1704                 wdev_lock(wdev);
1705                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1706                              IEEE80211_MAX_MESH_ID_LEN);
1707                 wdev->mesh_id_up_len =
1708                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1709                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1710                        wdev->mesh_id_up_len);
1711                 wdev_unlock(wdev);
1712         }
1713
1714         return 0;
1715 }
1716
1717 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1718 {
1719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1720         struct net_device *dev = info->user_ptr[1];
1721
1722         if (!rdev->ops->del_virtual_intf)
1723                 return -EOPNOTSUPP;
1724
1725         return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1726 }
1727
1728 struct get_key_cookie {
1729         struct sk_buff *msg;
1730         int error;
1731         int idx;
1732 };
1733
1734 static void get_key_callback(void *c, struct key_params *params)
1735 {
1736         struct nlattr *key;
1737         struct get_key_cookie *cookie = c;
1738
1739         if (params->key)
1740                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1741                         params->key_len, params->key);
1742
1743         if (params->seq)
1744                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1745                         params->seq_len, params->seq);
1746
1747         if (params->cipher)
1748                 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1749                             params->cipher);
1750
1751         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1752         if (!key)
1753                 goto nla_put_failure;
1754
1755         if (params->key)
1756                 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1757                         params->key_len, params->key);
1758
1759         if (params->seq)
1760                 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1761                         params->seq_len, params->seq);
1762
1763         if (params->cipher)
1764                 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1765                             params->cipher);
1766
1767         NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1768
1769         nla_nest_end(cookie->msg, key);
1770
1771         return;
1772  nla_put_failure:
1773         cookie->error = 1;
1774 }
1775
1776 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1777 {
1778         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1779         int err;
1780         struct net_device *dev = info->user_ptr[1];
1781         u8 key_idx = 0;
1782         const u8 *mac_addr = NULL;
1783         bool pairwise;
1784         struct get_key_cookie cookie = {
1785                 .error = 0,
1786         };
1787         void *hdr;
1788         struct sk_buff *msg;
1789
1790         if (info->attrs[NL80211_ATTR_KEY_IDX])
1791                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1792
1793         if (key_idx > 5)
1794                 return -EINVAL;
1795
1796         if (info->attrs[NL80211_ATTR_MAC])
1797                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1798
1799         pairwise = !!mac_addr;
1800         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1801                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1802                 if (kt >= NUM_NL80211_KEYTYPES)
1803                         return -EINVAL;
1804                 if (kt != NL80211_KEYTYPE_GROUP &&
1805                     kt != NL80211_KEYTYPE_PAIRWISE)
1806                         return -EINVAL;
1807                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1808         }
1809
1810         if (!rdev->ops->get_key)
1811                 return -EOPNOTSUPP;
1812
1813         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1814         if (!msg)
1815                 return -ENOMEM;
1816
1817         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1818                              NL80211_CMD_NEW_KEY);
1819         if (IS_ERR(hdr))
1820                 return PTR_ERR(hdr);
1821
1822         cookie.msg = msg;
1823         cookie.idx = key_idx;
1824
1825         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1826         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1827         if (mac_addr)
1828                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1829
1830         if (pairwise && mac_addr &&
1831             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1832                 return -ENOENT;
1833
1834         err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1835                                  mac_addr, &cookie, get_key_callback);
1836
1837         if (err)
1838                 goto free_msg;
1839
1840         if (cookie.error)
1841                 goto nla_put_failure;
1842
1843         genlmsg_end(msg, hdr);
1844         return genlmsg_reply(msg, info);
1845
1846  nla_put_failure:
1847         err = -ENOBUFS;
1848  free_msg:
1849         nlmsg_free(msg);
1850         return err;
1851 }
1852
1853 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1854 {
1855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1856         struct key_parse key;
1857         int err;
1858         struct net_device *dev = info->user_ptr[1];
1859
1860         err = nl80211_parse_key(info, &key);
1861         if (err)
1862                 return err;
1863
1864         if (key.idx < 0)
1865                 return -EINVAL;
1866
1867         /* only support setting default key */
1868         if (!key.def && !key.defmgmt)
1869                 return -EINVAL;
1870
1871         wdev_lock(dev->ieee80211_ptr);
1872
1873         if (key.def) {
1874                 if (!rdev->ops->set_default_key) {
1875                         err = -EOPNOTSUPP;
1876                         goto out;
1877                 }
1878
1879                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1880                 if (err)
1881                         goto out;
1882
1883                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1884                                                  key.def_uni, key.def_multi);
1885
1886                 if (err)
1887                         goto out;
1888
1889 #ifdef CONFIG_CFG80211_WEXT
1890                 dev->ieee80211_ptr->wext.default_key = key.idx;
1891 #endif
1892         } else {
1893                 if (key.def_uni || !key.def_multi) {
1894                         err = -EINVAL;
1895                         goto out;
1896                 }
1897
1898                 if (!rdev->ops->set_default_mgmt_key) {
1899                         err = -EOPNOTSUPP;
1900                         goto out;
1901                 }
1902
1903                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1904                 if (err)
1905                         goto out;
1906
1907                 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1908                                                       dev, key.idx);
1909                 if (err)
1910                         goto out;
1911
1912 #ifdef CONFIG_CFG80211_WEXT
1913                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1914 #endif
1915         }
1916
1917  out:
1918         wdev_unlock(dev->ieee80211_ptr);
1919
1920         return err;
1921 }
1922
1923 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1924 {
1925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1926         int err;
1927         struct net_device *dev = info->user_ptr[1];
1928         struct key_parse key;
1929         const u8 *mac_addr = NULL;
1930
1931         err = nl80211_parse_key(info, &key);
1932         if (err)
1933                 return err;
1934
1935         if (!key.p.key)
1936                 return -EINVAL;
1937
1938         if (info->attrs[NL80211_ATTR_MAC])
1939                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1940
1941         if (key.type == -1) {
1942                 if (mac_addr)
1943                         key.type = NL80211_KEYTYPE_PAIRWISE;
1944                 else
1945                         key.type = NL80211_KEYTYPE_GROUP;
1946         }
1947
1948         /* for now */
1949         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1950             key.type != NL80211_KEYTYPE_GROUP)
1951                 return -EINVAL;
1952
1953         if (!rdev->ops->add_key)
1954                 return -EOPNOTSUPP;
1955
1956         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1957                                            key.type == NL80211_KEYTYPE_PAIRWISE,
1958                                            mac_addr))
1959                 return -EINVAL;
1960
1961         wdev_lock(dev->ieee80211_ptr);
1962         err = nl80211_key_allowed(dev->ieee80211_ptr);
1963         if (!err)
1964                 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1965                                          key.type == NL80211_KEYTYPE_PAIRWISE,
1966                                          mac_addr, &key.p);
1967         wdev_unlock(dev->ieee80211_ptr);
1968
1969         return err;
1970 }
1971
1972 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1973 {
1974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1975         int err;
1976         struct net_device *dev = info->user_ptr[1];
1977         u8 *mac_addr = NULL;
1978         struct key_parse key;
1979
1980         err = nl80211_parse_key(info, &key);
1981         if (err)
1982                 return err;
1983
1984         if (info->attrs[NL80211_ATTR_MAC])
1985                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1986
1987         if (key.type == -1) {
1988                 if (mac_addr)
1989                         key.type = NL80211_KEYTYPE_PAIRWISE;
1990                 else
1991                         key.type = NL80211_KEYTYPE_GROUP;
1992         }
1993
1994         /* for now */
1995         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1996             key.type != NL80211_KEYTYPE_GROUP)
1997                 return -EINVAL;
1998
1999         if (!rdev->ops->del_key)
2000                 return -EOPNOTSUPP;
2001
2002         wdev_lock(dev->ieee80211_ptr);
2003         err = nl80211_key_allowed(dev->ieee80211_ptr);
2004
2005         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2006             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2007                 err = -ENOENT;
2008
2009         if (!err)
2010                 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2011                                          key.type == NL80211_KEYTYPE_PAIRWISE,
2012                                          mac_addr);
2013
2014 #ifdef CONFIG_CFG80211_WEXT
2015         if (!err) {
2016                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2017                         dev->ieee80211_ptr->wext.default_key = -1;
2018                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2019                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2020         }
2021 #endif
2022         wdev_unlock(dev->ieee80211_ptr);
2023
2024         return err;
2025 }
2026
2027 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2028 {
2029         int (*call)(struct wiphy *wiphy, struct net_device *dev,
2030                     struct beacon_parameters *info);
2031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2032         struct net_device *dev = info->user_ptr[1];
2033         struct wireless_dev *wdev = dev->ieee80211_ptr;
2034         struct beacon_parameters params;
2035         int haveinfo = 0, err;
2036
2037         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2038             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2039             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2040             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2041                 return -EINVAL;
2042
2043         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2044             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2045                 return -EOPNOTSUPP;
2046
2047         memset(&params, 0, sizeof(params));
2048
2049         switch (info->genlhdr->cmd) {
2050         case NL80211_CMD_NEW_BEACON:
2051                 /* these are required for NEW_BEACON */
2052                 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2053                     !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2054                     !info->attrs[NL80211_ATTR_BEACON_HEAD])
2055                         return -EINVAL;
2056
2057                 params.interval =
2058                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2059                 params.dtim_period =
2060                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2061
2062                 err = cfg80211_validate_beacon_int(rdev, params.interval);
2063                 if (err)
2064                         return err;
2065
2066                 /*
2067                  * In theory, some of these attributes could be required for
2068                  * NEW_BEACON, but since they were not used when the command was
2069                  * originally added, keep them optional for old user space
2070                  * programs to work with drivers that do not need the additional
2071                  * information.
2072                  */
2073                 if (info->attrs[NL80211_ATTR_SSID]) {
2074                         params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2075                         params.ssid_len =
2076                                 nla_len(info->attrs[NL80211_ATTR_SSID]);
2077                         if (params.ssid_len == 0 ||
2078                             params.ssid_len > IEEE80211_MAX_SSID_LEN)
2079                                 return -EINVAL;
2080                 }
2081
2082                 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2083                         params.hidden_ssid = nla_get_u32(
2084                                 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2085                         if (params.hidden_ssid !=
2086                             NL80211_HIDDEN_SSID_NOT_IN_USE &&
2087                             params.hidden_ssid !=
2088                             NL80211_HIDDEN_SSID_ZERO_LEN &&
2089                             params.hidden_ssid !=
2090                             NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2091                                 return -EINVAL;
2092                 }
2093
2094                 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2095
2096                 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2097                         params.auth_type = nla_get_u32(
2098                                 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2099                         if (!nl80211_valid_auth_type(params.auth_type))
2100                                 return -EINVAL;
2101                 } else
2102                         params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2103
2104                 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2105                                               NL80211_MAX_NR_CIPHER_SUITES);
2106                 if (err)
2107                         return err;
2108
2109                 call = rdev->ops->add_beacon;
2110                 break;
2111         case NL80211_CMD_SET_BEACON:
2112                 call = rdev->ops->set_beacon;
2113                 break;
2114         default:
2115                 WARN_ON(1);
2116                 return -EOPNOTSUPP;
2117         }
2118
2119         if (!call)
2120                 return -EOPNOTSUPP;
2121
2122         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2123                 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2124                 params.head_len =
2125                     nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2126                 haveinfo = 1;
2127         }
2128
2129         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2130                 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2131                 params.tail_len =
2132                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2133                 haveinfo = 1;
2134         }
2135
2136         if (!haveinfo)
2137                 return -EINVAL;
2138
2139         if (info->attrs[NL80211_ATTR_IE]) {
2140                 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2141                 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2142         }
2143
2144         if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2145                 params.proberesp_ies =
2146                         nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2147                 params.proberesp_ies_len =
2148                         nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2149         }
2150
2151         if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2152                 params.assocresp_ies =
2153                         nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2154                 params.assocresp_ies_len =
2155                         nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2156         }
2157
2158         err = call(&rdev->wiphy, dev, &params);
2159         if (!err && params.interval)
2160                 wdev->beacon_interval = params.interval;
2161         return err;
2162 }
2163
2164 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2165 {
2166         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2167         struct net_device *dev = info->user_ptr[1];
2168         struct wireless_dev *wdev = dev->ieee80211_ptr;
2169         int err;
2170
2171         if (!rdev->ops->del_beacon)
2172                 return -EOPNOTSUPP;
2173
2174         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2175             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2176                 return -EOPNOTSUPP;
2177
2178         err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2179         if (!err)
2180                 wdev->beacon_interval = 0;
2181         return err;
2182 }
2183
2184 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2185         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2186         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2187         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2188         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2189         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2190 };
2191
2192 static int parse_station_flags(struct genl_info *info,
2193                                struct station_parameters *params)
2194 {
2195         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2196         struct nlattr *nla;
2197         int flag;
2198
2199         /*
2200          * Try parsing the new attribute first so userspace
2201          * can specify both for older kernels.
2202          */
2203         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2204         if (nla) {
2205                 struct nl80211_sta_flag_update *sta_flags;
2206
2207                 sta_flags = nla_data(nla);
2208                 params->sta_flags_mask = sta_flags->mask;
2209                 params->sta_flags_set = sta_flags->set;
2210                 if ((params->sta_flags_mask |
2211                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2212                         return -EINVAL;
2213                 return 0;
2214         }
2215
2216         /* if present, parse the old attribute */
2217
2218         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2219         if (!nla)
2220                 return 0;
2221
2222         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2223                              nla, sta_flags_policy))
2224                 return -EINVAL;
2225
2226         params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2227         params->sta_flags_mask &= ~1;
2228
2229         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2230                 if (flags[flag])
2231                         params->sta_flags_set |= (1<<flag);
2232
2233         return 0;
2234 }
2235
2236 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2237                                  int attr)
2238 {
2239         struct nlattr *rate;
2240         u16 bitrate;
2241
2242         rate = nla_nest_start(msg, attr);
2243         if (!rate)
2244                 goto nla_put_failure;
2245
2246         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2247         bitrate = cfg80211_calculate_bitrate(info);
2248         if (bitrate > 0)
2249                 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2250
2251         if (info->flags & RATE_INFO_FLAGS_MCS)
2252                 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2253         if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2254                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2255         if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2256                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2257
2258         nla_nest_end(msg, rate);
2259         return true;
2260
2261 nla_put_failure:
2262         return false;
2263 }
2264
2265 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2266                                 int flags, struct net_device *dev,
2267                                 const u8 *mac_addr, struct station_info *sinfo)
2268 {
2269         void *hdr;
2270         struct nlattr *sinfoattr, *bss_param;
2271
2272         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2273         if (!hdr)
2274                 return -1;
2275
2276         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2277         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2278
2279         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2280
2281         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2282         if (!sinfoattr)
2283                 goto nla_put_failure;
2284         if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2285                 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2286                             sinfo->connected_time);
2287         if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2288                 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2289                             sinfo->inactive_time);
2290         if (sinfo->filled & STATION_INFO_RX_BYTES)
2291                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2292                             sinfo->rx_bytes);
2293         if (sinfo->filled & STATION_INFO_TX_BYTES)
2294                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2295                             sinfo->tx_bytes);
2296         if (sinfo->filled & STATION_INFO_LLID)
2297                 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2298                             sinfo->llid);
2299         if (sinfo->filled & STATION_INFO_PLID)
2300                 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2301                             sinfo->plid);
2302         if (sinfo->filled & STATION_INFO_PLINK_STATE)
2303                 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2304                             sinfo->plink_state);
2305         if (sinfo->filled & STATION_INFO_SIGNAL)
2306                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2307                            sinfo->signal);
2308         if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2309                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2310                            sinfo->signal_avg);
2311         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2312                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2313                                           NL80211_STA_INFO_TX_BITRATE))
2314                         goto nla_put_failure;
2315         }
2316         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2317                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2318                                           NL80211_STA_INFO_RX_BITRATE))
2319                         goto nla_put_failure;
2320         }
2321         if (sinfo->filled & STATION_INFO_RX_PACKETS)
2322                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2323                             sinfo->rx_packets);
2324         if (sinfo->filled & STATION_INFO_TX_PACKETS)
2325                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2326                             sinfo->tx_packets);
2327         if (sinfo->filled & STATION_INFO_TX_RETRIES)
2328                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2329                             sinfo->tx_retries);
2330         if (sinfo->filled & STATION_INFO_TX_FAILED)
2331                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2332                             sinfo->tx_failed);
2333         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2334                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2335                 if (!bss_param)
2336                         goto nla_put_failure;
2337
2338                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2339                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2340                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2341                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2342                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2343                         NLA_PUT_FLAG(msg,
2344                                      NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2345                 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2346                            sinfo->bss_param.dtim_period);
2347                 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2348                             sinfo->bss_param.beacon_interval);
2349
2350                 nla_nest_end(msg, bss_param);
2351         }
2352         if (sinfo->filled & STATION_INFO_STA_FLAGS)
2353                 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2354                         sizeof(struct nl80211_sta_flag_update),
2355                         &sinfo->sta_flags);
2356         nla_nest_end(msg, sinfoattr);
2357
2358         if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2359                 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2360                         sinfo->assoc_req_ies);
2361
2362         return genlmsg_end(msg, hdr);
2363
2364  nla_put_failure:
2365         genlmsg_cancel(msg, hdr);
2366         return -EMSGSIZE;
2367 }
2368
2369 static int nl80211_dump_station(struct sk_buff *skb,
2370                                 struct netlink_callback *cb)
2371 {
2372         struct station_info sinfo;
2373         struct cfg80211_registered_device *dev;
2374         struct net_device *netdev;
2375         u8 mac_addr[ETH_ALEN];
2376         int sta_idx = cb->args[1];
2377         int err;
2378
2379         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2380         if (err)
2381                 return err;
2382
2383         if (!dev->ops->dump_station) {
2384                 err = -EOPNOTSUPP;
2385                 goto out_err;
2386         }
2387
2388         while (1) {
2389                 memset(&sinfo, 0, sizeof(sinfo));
2390                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2391                                              mac_addr, &sinfo);
2392                 if (err == -ENOENT)
2393                         break;
2394                 if (err)
2395                         goto out_err;
2396
2397                 if (nl80211_send_station(skb,
2398                                 NETLINK_CB(cb->skb).pid,
2399                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2400                                 netdev, mac_addr,
2401                                 &sinfo) < 0)
2402                         goto out;
2403
2404                 sta_idx++;
2405         }
2406
2407
2408  out:
2409         cb->args[1] = sta_idx;
2410         err = skb->len;
2411  out_err:
2412         nl80211_finish_netdev_dump(dev);
2413
2414         return err;
2415 }
2416
2417 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2418 {
2419         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2420         struct net_device *dev = info->user_ptr[1];
2421         struct station_info sinfo;
2422         struct sk_buff *msg;
2423         u8 *mac_addr = NULL;
2424         int err;
2425
2426         memset(&sinfo, 0, sizeof(sinfo));
2427
2428         if (!info->attrs[NL80211_ATTR_MAC])
2429                 return -EINVAL;
2430
2431         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2432
2433         if (!rdev->ops->get_station)
2434                 return -EOPNOTSUPP;
2435
2436         err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2437         if (err)
2438                 return err;
2439
2440         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2441         if (!msg)
2442                 return -ENOMEM;
2443
2444         if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2445                                  dev, mac_addr, &sinfo) < 0) {
2446                 nlmsg_free(msg);
2447                 return -ENOBUFS;
2448         }
2449
2450         return genlmsg_reply(msg, info);
2451 }
2452
2453 /*
2454  * Get vlan interface making sure it is running and on the right wiphy.
2455  */
2456 static int get_vlan(struct genl_info *info,
2457                     struct cfg80211_registered_device *rdev,
2458                     struct net_device **vlan)
2459 {
2460         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2461         *vlan = NULL;
2462
2463         if (vlanattr) {
2464                 *vlan = dev_get_by_index(genl_info_net(info),
2465                                          nla_get_u32(vlanattr));
2466                 if (!*vlan)
2467                         return -ENODEV;
2468                 if (!(*vlan)->ieee80211_ptr)
2469                         return -EINVAL;
2470                 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2471                         return -EINVAL;
2472                 if (!netif_running(*vlan))
2473                         return -ENETDOWN;
2474         }
2475         return 0;
2476 }
2477
2478 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2479 {
2480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2481         int err;
2482         struct net_device *dev = info->user_ptr[1];
2483         struct station_parameters params;
2484         u8 *mac_addr = NULL;
2485
2486         memset(&params, 0, sizeof(params));
2487
2488         params.listen_interval = -1;
2489         params.plink_state = -1;
2490
2491         if (info->attrs[NL80211_ATTR_STA_AID])
2492                 return -EINVAL;
2493
2494         if (!info->attrs[NL80211_ATTR_MAC])
2495                 return -EINVAL;
2496
2497         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2498
2499         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2500                 params.supported_rates =
2501                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2502                 params.supported_rates_len =
2503                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2504         }
2505
2506         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2507                 params.listen_interval =
2508                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2509
2510         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2511                 params.ht_capa =
2512                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2513
2514         if (parse_station_flags(info, &params))
2515                 return -EINVAL;
2516
2517         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2518                 params.plink_action =
2519                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2520
2521         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2522                 params.plink_state =
2523                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2524
2525         err = get_vlan(info, rdev, &params.vlan);
2526         if (err)
2527                 goto out;
2528
2529         /* validate settings */
2530         err = 0;
2531
2532         switch (dev->ieee80211_ptr->iftype) {
2533         case NL80211_IFTYPE_AP:
2534         case NL80211_IFTYPE_AP_VLAN:
2535         case NL80211_IFTYPE_P2P_GO:
2536                 /* disallow mesh-specific things */
2537                 if (params.plink_action)
2538                         err = -EINVAL;
2539                 break;
2540         case NL80211_IFTYPE_P2P_CLIENT:
2541         case NL80211_IFTYPE_STATION:
2542                 /* disallow things sta doesn't support */
2543                 if (params.plink_action)
2544                         err = -EINVAL;
2545                 if (params.vlan)
2546                         err = -EINVAL;
2547                 if (params.supported_rates &&
2548                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2549                         err = -EINVAL;
2550                 if (params.ht_capa)
2551                         err = -EINVAL;
2552                 if (params.listen_interval >= 0)
2553                         err = -EINVAL;
2554                 if (params.sta_flags_mask &
2555                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2556                                   BIT(NL80211_STA_FLAG_TDLS_PEER)))
2557                         err = -EINVAL;
2558                 /* can't change the TDLS bit */
2559                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2560                     (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2561                         err = -EINVAL;
2562                 break;
2563         case NL80211_IFTYPE_MESH_POINT:
2564                 /* disallow things mesh doesn't support */
2565                 if (params.vlan)
2566                         err = -EINVAL;
2567                 if (params.ht_capa)
2568                         err = -EINVAL;
2569                 if (params.listen_interval >= 0)
2570                         err = -EINVAL;
2571                 if (params.sta_flags_mask &
2572                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2573                                   BIT(NL80211_STA_FLAG_MFP) |
2574                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
2575                         err = -EINVAL;
2576                 break;
2577         default:
2578                 err = -EINVAL;
2579         }
2580
2581         if (err)
2582                 goto out;
2583
2584         if (!rdev->ops->change_station) {
2585                 err = -EOPNOTSUPP;
2586                 goto out;
2587         }
2588
2589         err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2590
2591  out:
2592         if (params.vlan)
2593                 dev_put(params.vlan);
2594
2595         return err;
2596 }
2597
2598 static struct nla_policy
2599 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2600         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2601         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2602 };
2603
2604 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2605 {
2606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2607         int err;
2608         struct net_device *dev = info->user_ptr[1];
2609         struct station_parameters params;
2610         u8 *mac_addr = NULL;
2611
2612         memset(&params, 0, sizeof(params));
2613
2614         if (!info->attrs[NL80211_ATTR_MAC])
2615                 return -EINVAL;
2616
2617         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2618                 return -EINVAL;
2619
2620         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2621                 return -EINVAL;
2622
2623         if (!info->attrs[NL80211_ATTR_STA_AID])
2624                 return -EINVAL;
2625
2626         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2627         params.supported_rates =
2628                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2629         params.supported_rates_len =
2630                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2631         params.listen_interval =
2632                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2633
2634         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2635         if (!params.aid || params.aid > IEEE80211_MAX_AID)
2636                 return -EINVAL;
2637
2638         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2639                 params.ht_capa =
2640                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2641
2642         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2643                 params.plink_action =
2644                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2645
2646         if (parse_station_flags(info, &params))
2647                 return -EINVAL;
2648
2649         /* parse WME attributes if sta is WME capable */
2650         if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2651             (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2652             info->attrs[NL80211_ATTR_STA_WME]) {
2653                 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2654                 struct nlattr *nla;
2655
2656                 nla = info->attrs[NL80211_ATTR_STA_WME];
2657                 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2658                                        nl80211_sta_wme_policy);
2659                 if (err)
2660                         return err;
2661
2662                 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2663                         params.uapsd_queues =
2664                              nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2665                 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2666                         return -EINVAL;
2667
2668                 if (tb[NL80211_STA_WME_MAX_SP])
2669                         params.max_sp =
2670                              nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2671
2672                 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2673                         return -EINVAL;
2674
2675                 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2676         }
2677
2678         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2679             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2680             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2681             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
2682             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
2683                 return -EINVAL;
2684
2685         /*
2686          * Only managed stations can add TDLS peers, and only when the
2687          * wiphy supports external TDLS setup.
2688          */
2689         if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
2690             !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2691               (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2692               (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
2693                 return -EINVAL;
2694
2695         err = get_vlan(info, rdev, &params.vlan);
2696         if (err)
2697                 goto out;
2698
2699         /* validate settings */
2700         err = 0;
2701
2702         if (!rdev->ops->add_station) {
2703                 err = -EOPNOTSUPP;
2704                 goto out;
2705         }
2706
2707         err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2708
2709  out:
2710         if (params.vlan)
2711                 dev_put(params.vlan);
2712         return err;
2713 }
2714
2715 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2716 {
2717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2718         struct net_device *dev = info->user_ptr[1];
2719         u8 *mac_addr = NULL;
2720
2721         if (info->attrs[NL80211_ATTR_MAC])
2722                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2723
2724         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2725             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2726             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2727             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2728                 return -EINVAL;
2729
2730         if (!rdev->ops->del_station)
2731                 return -EOPNOTSUPP;
2732
2733         return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2734 }
2735
2736 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2737                                 int flags, struct net_device *dev,
2738                                 u8 *dst, u8 *next_hop,
2739                                 struct mpath_info *pinfo)
2740 {
2741         void *hdr;
2742         struct nlattr *pinfoattr;
2743
2744         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2745         if (!hdr)
2746                 return -1;
2747
2748         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2749         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2750         NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2751
2752         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2753
2754         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2755         if (!pinfoattr)
2756                 goto nla_put_failure;
2757         if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2758                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2759                             pinfo->frame_qlen);
2760         if (pinfo->filled & MPATH_INFO_SN)
2761                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2762                             pinfo->sn);
2763         if (pinfo->filled & MPATH_INFO_METRIC)
2764                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2765                             pinfo->metric);
2766         if (pinfo->filled & MPATH_INFO_EXPTIME)
2767                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2768                             pinfo->exptime);
2769         if (pinfo->filled & MPATH_INFO_FLAGS)
2770                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2771                             pinfo->flags);
2772         if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2773                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2774                             pinfo->discovery_timeout);
2775         if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2776                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2777                             pinfo->discovery_retries);
2778
2779         nla_nest_end(msg, pinfoattr);
2780
2781         return genlmsg_end(msg, hdr);
2782
2783  nla_put_failure:
2784         genlmsg_cancel(msg, hdr);
2785         return -EMSGSIZE;
2786 }
2787
2788 static int nl80211_dump_mpath(struct sk_buff *skb,
2789                               struct netlink_callback *cb)
2790 {
2791         struct mpath_info pinfo;
2792         struct cfg80211_registered_device *dev;
2793         struct net_device *netdev;
2794         u8 dst[ETH_ALEN];
2795         u8 next_hop[ETH_ALEN];
2796         int path_idx = cb->args[1];
2797         int err;
2798
2799         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2800         if (err)
2801                 return err;
2802
2803         if (!dev->ops->dump_mpath) {
2804                 err = -EOPNOTSUPP;
2805                 goto out_err;
2806         }
2807
2808         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2809                 err = -EOPNOTSUPP;
2810                 goto out_err;
2811         }
2812
2813         while (1) {
2814                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2815                                            dst, next_hop, &pinfo);
2816                 if (err == -ENOENT)
2817                         break;
2818                 if (err)
2819                         goto out_err;
2820
2821                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2822                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
2823                                        netdev, dst, next_hop,
2824                                        &pinfo) < 0)
2825                         goto out;
2826
2827                 path_idx++;
2828         }
2829
2830
2831  out:
2832         cb->args[1] = path_idx;
2833         err = skb->len;
2834  out_err:
2835         nl80211_finish_netdev_dump(dev);
2836         return err;
2837 }
2838
2839 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2840 {
2841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2842         int err;
2843         struct net_device *dev = info->user_ptr[1];
2844         struct mpath_info pinfo;
2845         struct sk_buff *msg;
2846         u8 *dst = NULL;
2847         u8 next_hop[ETH_ALEN];
2848
2849         memset(&pinfo, 0, sizeof(pinfo));
2850
2851         if (!info->attrs[NL80211_ATTR_MAC])
2852                 return -EINVAL;
2853
2854         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2855
2856         if (!rdev->ops->get_mpath)
2857                 return -EOPNOTSUPP;
2858
2859         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2860                 return -EOPNOTSUPP;
2861
2862         err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2863         if (err)
2864                 return err;
2865
2866         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2867         if (!msg)
2868                 return -ENOMEM;
2869
2870         if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2871                                  dev, dst, next_hop, &pinfo) < 0) {
2872                 nlmsg_free(msg);
2873                 return -ENOBUFS;
2874         }
2875
2876         return genlmsg_reply(msg, info);
2877 }
2878
2879 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2880 {
2881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2882         struct net_device *dev = info->user_ptr[1];
2883         u8 *dst = NULL;
2884         u8 *next_hop = NULL;
2885
2886         if (!info->attrs[NL80211_ATTR_MAC])
2887                 return -EINVAL;
2888
2889         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2890                 return -EINVAL;
2891
2892         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2893         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2894
2895         if (!rdev->ops->change_mpath)
2896                 return -EOPNOTSUPP;
2897
2898         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2899                 return -EOPNOTSUPP;
2900
2901         return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2902 }
2903
2904 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2905 {
2906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2907         struct net_device *dev = info->user_ptr[1];
2908         u8 *dst = NULL;
2909         u8 *next_hop = NULL;
2910
2911         if (!info->attrs[NL80211_ATTR_MAC])
2912                 return -EINVAL;
2913
2914         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2915                 return -EINVAL;
2916
2917         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2918         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2919
2920         if (!rdev->ops->add_mpath)
2921                 return -EOPNOTSUPP;
2922
2923         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2924                 return -EOPNOTSUPP;
2925
2926         return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2927 }
2928
2929 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2930 {
2931         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2932         struct net_device *dev = info->user_ptr[1];
2933         u8 *dst = NULL;
2934
2935         if (info->attrs[NL80211_ATTR_MAC])
2936                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2937
2938         if (!rdev->ops->del_mpath)
2939                 return -EOPNOTSUPP;
2940
2941         return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2942 }
2943
2944 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2945 {
2946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2947         struct net_device *dev = info->user_ptr[1];
2948         struct bss_parameters params;
2949
2950         memset(&params, 0, sizeof(params));
2951         /* default to not changing parameters */
2952         params.use_cts_prot = -1;
2953         params.use_short_preamble = -1;
2954         params.use_short_slot_time = -1;
2955         params.ap_isolate = -1;
2956         params.ht_opmode = -1;
2957
2958         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2959                 params.use_cts_prot =
2960                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2961         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2962                 params.use_short_preamble =
2963                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2964         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2965                 params.use_short_slot_time =
2966                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2967         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2968                 params.basic_rates =
2969                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2970                 params.basic_rates_len =
2971                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2972         }
2973         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2974                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2975         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2976                 params.ht_opmode =
2977                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2978
2979         if (!rdev->ops->change_bss)
2980                 return -EOPNOTSUPP;
2981
2982         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2983             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2984                 return -EOPNOTSUPP;
2985
2986         return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2987 }
2988
2989 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2990         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
2991         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
2992         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
2993         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
2994         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
2995         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
2996 };
2997
2998 static int parse_reg_rule(struct nlattr *tb[],
2999         struct ieee80211_reg_rule *reg_rule)
3000 {
3001         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3002         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3003
3004         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3005                 return -EINVAL;
3006         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3007                 return -EINVAL;
3008         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3009                 return -EINVAL;
3010         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3011                 return -EINVAL;
3012         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3013                 return -EINVAL;
3014
3015         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3016
3017         freq_range->start_freq_khz =
3018                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3019         freq_range->end_freq_khz =
3020                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3021         freq_range->max_bandwidth_khz =
3022                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3023
3024         power_rule->max_eirp =
3025                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3026
3027         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3028                 power_rule->max_antenna_gain =
3029                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3030
3031         return 0;
3032 }
3033
3034 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3035 {
3036         int r;
3037         char *data = NULL;
3038
3039         /*
3040          * You should only get this when cfg80211 hasn't yet initialized
3041          * completely when built-in to the kernel right between the time
3042          * window between nl80211_init() and regulatory_init(), if that is
3043          * even possible.
3044          */
3045         mutex_lock(&cfg80211_mutex);
3046         if (unlikely(!cfg80211_regdomain)) {
3047                 mutex_unlock(&cfg80211_mutex);
3048                 return -EINPROGRESS;
3049         }
3050         mutex_unlock(&cfg80211_mutex);
3051
3052         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3053                 return -EINVAL;
3054
3055         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3056
3057         r = regulatory_hint_user(data);
3058
3059         return r;
3060 }
3061
3062 static int nl80211_get_mesh_config(struct sk_buff *skb,
3063                                    struct genl_info *info)
3064 {
3065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3066         struct net_device *dev = info->user_ptr[1];
3067         struct wireless_dev *wdev = dev->ieee80211_ptr;
3068         struct mesh_config cur_params;
3069         int err = 0;
3070         void *hdr;
3071         struct nlattr *pinfoattr;
3072         struct sk_buff *msg;
3073
3074         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3075                 return -EOPNOTSUPP;
3076
3077         if (!rdev->ops->get_mesh_config)
3078                 return -EOPNOTSUPP;
3079
3080         wdev_lock(wdev);
3081         /* If not connected, get default parameters */
3082         if (!wdev->mesh_id_len)
3083                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3084         else
3085                 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3086                                                  &cur_params);
3087         wdev_unlock(wdev);
3088
3089         if (err)
3090                 return err;
3091
3092         /* Draw up a netlink message to send back */
3093         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3094         if (!msg)
3095                 return -ENOMEM;
3096         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3097                              NL80211_CMD_GET_MESH_CONFIG);
3098         if (!hdr)
3099                 goto out;
3100         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3101         if (!pinfoattr)
3102                 goto nla_put_failure;
3103         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3104         NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3105                         cur_params.dot11MeshRetryTimeout);
3106         NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3107                         cur_params.dot11MeshConfirmTimeout);
3108         NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3109                         cur_params.dot11MeshHoldingTimeout);
3110         NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3111                         cur_params.dot11MeshMaxPeerLinks);
3112         NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3113                         cur_params.dot11MeshMaxRetries);
3114         NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3115                         cur_params.dot11MeshTTL);
3116         NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3117                         cur_params.element_ttl);
3118         NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3119                         cur_params.auto_open_plinks);
3120         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3121                         cur_params.dot11MeshHWMPmaxPREQretries);
3122         NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3123                         cur_params.path_refresh_time);
3124         NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3125                         cur_params.min_discovery_timeout);
3126         NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3127                         cur_params.dot11MeshHWMPactivePathTimeout);
3128         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3129                         cur_params.dot11MeshHWMPpreqMinInterval);
3130         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3131                         cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3132         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3133                         cur_params.dot11MeshHWMPRootMode);
3134         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3135                         cur_params.dot11MeshHWMPRannInterval);
3136         NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3137                         cur_params.dot11MeshGateAnnouncementProtocol);
3138         nla_nest_end(msg, pinfoattr);
3139         genlmsg_end(msg, hdr);
3140         return genlmsg_reply(msg, info);
3141
3142  nla_put_failure:
3143         genlmsg_cancel(msg, hdr);
3144  out:
3145         nlmsg_free(msg);
3146         return -ENOBUFS;
3147 }
3148
3149 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3150         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3151         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3152         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3153         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3154         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3155         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3156         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3157         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3158
3159         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3160         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3161         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3162         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3163         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3164         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3165         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3166         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3167         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3168 };
3169
3170 static const struct nla_policy
3171         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3172         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3173         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3174         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3175         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3176                 .len = IEEE80211_MAX_DATA_LEN },
3177         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3178 };
3179
3180 static int nl80211_parse_mesh_config(struct genl_info *info,
3181                                      struct mesh_config *cfg,
3182                                      u32 *mask_out)
3183 {
3184         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3185         u32 mask = 0;
3186
3187 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3188 do {\
3189         if (table[attr_num]) {\
3190                 cfg->param = nla_fn(table[attr_num]); \
3191                 mask |= (1 << (attr_num - 1)); \
3192         } \
3193 } while (0);\
3194
3195
3196         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3197                 return -EINVAL;
3198         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3199                              info->attrs[NL80211_ATTR_MESH_CONFIG],
3200                              nl80211_meshconf_params_policy))
3201                 return -EINVAL;
3202
3203         /* This makes sure that there aren't more than 32 mesh config
3204          * parameters (otherwise our bitfield scheme would not work.) */
3205         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3206
3207         /* Fill in the params struct */
3208         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3209                         mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3210         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3211                         mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3212         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3213                         mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3214         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3215                         mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3216         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3217                         mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3218         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3219                         mask, NL80211_MESHCONF_TTL, nla_get_u8);
3220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3221                         mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3222         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3223                         mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3224         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3225                         mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3226                         nla_get_u8);
3227         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3228                         mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3229         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3230                         mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3231                         nla_get_u16);
3232         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3233                         mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3234                         nla_get_u32);
3235         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3236                         mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3237                         nla_get_u16);
3238         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3239                         dot11MeshHWMPnetDiameterTraversalTime,
3240                         mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3241                         nla_get_u16);
3242         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3243                         dot11MeshHWMPRootMode, mask,
3244                         NL80211_MESHCONF_HWMP_ROOTMODE,
3245                         nla_get_u8);
3246         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3247                         dot11MeshHWMPRannInterval, mask,
3248                         NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3249                         nla_get_u16);
3250         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3251                         dot11MeshGateAnnouncementProtocol, mask,
3252                         NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3253                         nla_get_u8);
3254         if (mask_out)
3255                 *mask_out = mask;
3256
3257         return 0;
3258
3259 #undef FILL_IN_MESH_PARAM_IF_SET
3260 }
3261
3262 static int nl80211_parse_mesh_setup(struct genl_info *info,
3263                                      struct mesh_setup *setup)
3264 {
3265         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3266
3267         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3268                 return -EINVAL;
3269         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3270                              info->attrs[NL80211_ATTR_MESH_SETUP],
3271                              nl80211_mesh_setup_params_policy))
3272                 return -EINVAL;
3273
3274         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3275                 setup->path_sel_proto =
3276                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3277                  IEEE80211_PATH_PROTOCOL_VENDOR :
3278                  IEEE80211_PATH_PROTOCOL_HWMP;
3279
3280         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3281                 setup->path_metric =
3282                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3283                  IEEE80211_PATH_METRIC_VENDOR :
3284                  IEEE80211_PATH_METRIC_AIRTIME;
3285
3286
3287         if (tb[NL80211_MESH_SETUP_IE]) {
3288                 struct nlattr *ieattr =
3289                         tb[NL80211_MESH_SETUP_IE];
3290                 if (!is_valid_ie_attr(ieattr))
3291                         return -EINVAL;
3292                 setup->ie = nla_data(ieattr);
3293                 setup->ie_len = nla_len(ieattr);
3294         }
3295         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3296         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3297
3298         return 0;
3299 }
3300
3301 static int nl80211_update_mesh_config(struct sk_buff *skb,
3302                                       struct genl_info *info)
3303 {
3304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3305         struct net_device *dev = info->user_ptr[1];
3306         struct wireless_dev *wdev = dev->ieee80211_ptr;
3307         struct mesh_config cfg;
3308         u32 mask;
3309         int err;
3310
3311         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3312                 return -EOPNOTSUPP;
3313
3314         if (!rdev->ops->update_mesh_config)
3315                 return -EOPNOTSUPP;
3316
3317         err = nl80211_parse_mesh_config(info, &cfg, &mask);
3318         if (err)
3319                 return err;
3320
3321         wdev_lock(wdev);
3322         if (!wdev->mesh_id_len)
3323                 err = -ENOLINK;
3324
3325         if (!err)
3326                 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3327                                                     mask, &cfg);
3328
3329         wdev_unlock(wdev);
3330
3331         return err;
3332 }
3333
3334 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3335 {
3336         struct sk_buff *msg;
3337         void *hdr = NULL;
3338         struct nlattr *nl_reg_rules;
3339         unsigned int i;
3340         int err = -EINVAL;
3341
3342         mutex_lock(&cfg80211_mutex);
3343
3344         if (!cfg80211_regdomain)
3345                 goto out;
3346
3347         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3348         if (!msg) {
3349                 err = -ENOBUFS;
3350                 goto out;
3351         }
3352
3353         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3354                              NL80211_CMD_GET_REG);
3355         if (!hdr)
3356                 goto put_failure;
3357
3358         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3359                 cfg80211_regdomain->alpha2);
3360
3361         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3362         if (!nl_reg_rules)
3363                 goto nla_put_failure;
3364
3365         for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3366                 struct nlattr *nl_reg_rule;
3367                 const struct ieee80211_reg_rule *reg_rule;
3368                 const struct ieee80211_freq_range *freq_range;
3369                 const struct ieee80211_power_rule *power_rule;
3370
3371                 reg_rule = &cfg80211_regdomain->reg_rules[i];
3372                 freq_range = &reg_rule->freq_range;
3373                 power_rule = &reg_rule->power_rule;
3374
3375                 nl_reg_rule = nla_nest_start(msg, i);
3376                 if (!nl_reg_rule)
3377                         goto nla_put_failure;
3378
3379                 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3380                         reg_rule->flags);
3381                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3382                         freq_range->start_freq_khz);
3383                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3384                         freq_range->end_freq_khz);
3385                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3386                         freq_range->max_bandwidth_khz);
3387                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3388                         power_rule->max_antenna_gain);
3389                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3390                         power_rule->max_eirp);
3391
3392                 nla_nest_end(msg, nl_reg_rule);
3393         }
3394
3395         nla_nest_end(msg, nl_reg_rules);
3396
3397         genlmsg_end(msg, hdr);
3398         err = genlmsg_reply(msg, info);
3399         goto out;
3400
3401 nla_put_failure:
3402         genlmsg_cancel(msg, hdr);
3403 put_failure:
3404         nlmsg_free(msg);
3405         err = -EMSGSIZE;
3406 out:
3407         mutex_unlock(&cfg80211_mutex);
3408         return err;
3409 }
3410
3411 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3412 {
3413         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3414         struct nlattr *nl_reg_rule;
3415         char *alpha2 = NULL;
3416         int rem_reg_rules = 0, r = 0;
3417         u32 num_rules = 0, rule_idx = 0, size_of_regd;
3418         struct ieee80211_regdomain *rd = NULL;
3419
3420         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3421                 return -EINVAL;
3422
3423         if (!info->attrs[NL80211_ATTR_REG_RULES])
3424                 return -EINVAL;
3425
3426         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3427
3428         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3429                         rem_reg_rules) {
3430                 num_rules++;
3431                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3432                         return -EINVAL;
3433         }
3434
3435         mutex_lock(&cfg80211_mutex);
3436
3437         if (!reg_is_valid_request(alpha2)) {
3438                 r = -EINVAL;
3439                 goto bad_reg;
3440         }
3441
3442         size_of_regd = sizeof(struct ieee80211_regdomain) +
3443                 (num_rules * sizeof(struct ieee80211_reg_rule));
3444
3445         rd = kzalloc(size_of_regd, GFP_KERNEL);
3446         if (!rd) {
3447                 r = -ENOMEM;
3448                 goto bad_reg;
3449         }
3450
3451         rd->n_reg_rules = num_rules;
3452         rd->alpha2[0] = alpha2[0];
3453         rd->alpha2[1] = alpha2[1];
3454
3455         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3456                         rem_reg_rules) {
3457                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3458                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3459                         reg_rule_policy);
3460                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3461                 if (r)
3462                         goto bad_reg;
3463
3464                 rule_idx++;
3465
3466                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3467                         r = -EINVAL;
3468                         goto bad_reg;
3469                 }
3470         }
3471
3472         BUG_ON(rule_idx != num_rules);
3473
3474         r = set_regdom(rd);
3475
3476         mutex_unlock(&cfg80211_mutex);
3477
3478         return r;
3479
3480  bad_reg:
3481         mutex_unlock(&cfg80211_mutex);
3482         kfree(rd);
3483         return r;
3484 }
3485
3486 static int validate_scan_freqs(struct nlattr *freqs)
3487 {
3488         struct nlattr *attr1, *attr2;
3489         int n_channels = 0, tmp1, tmp2;
3490
3491         nla_for_each_nested(attr1, freqs, tmp1) {
3492                 n_channels++;
3493                 /*
3494                  * Some hardware has a limited channel list for
3495                  * scanning, and it is pretty much nonsensical
3496                  * to scan for a channel twice, so disallow that
3497                  * and don't require drivers to check that the
3498                  * channel list they get isn't longer than what
3499                  * they can scan, as long as they can scan all
3500                  * the channels they registered at once.
3501                  */
3502                 nla_for_each_nested(attr2, freqs, tmp2)
3503                         if (attr1 != attr2 &&
3504                             nla_get_u32(attr1) == nla_get_u32(attr2))
3505                                 return 0;
3506         }
3507
3508         return n_channels;
3509 }
3510
3511 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3512 {
3513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3514         struct net_device *dev = info->user_ptr[1];
3515         struct cfg80211_scan_request *request;
3516         struct nlattr *attr;
3517         struct wiphy *wiphy;
3518         int err, tmp, n_ssids = 0, n_channels, i;
3519         size_t ie_len;
3520
3521         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3522                 return -EINVAL;
3523
3524         wiphy = &rdev->wiphy;
3525
3526         if (!rdev->ops->scan)
3527                 return -EOPNOTSUPP;
3528
3529         if (rdev->scan_req)
3530                 return -EBUSY;
3531
3532         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3533                 n_channels = validate_scan_freqs(
3534                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3535                 if (!n_channels)
3536                         return -EINVAL;
3537         } else {
3538                 enum ieee80211_band band;
3539                 n_channels = 0;
3540
3541                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3542                         if (wiphy->bands[band])
3543                                 n_channels += wiphy->bands[band]->n_channels;
3544         }
3545
3546         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3547                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3548                         n_ssids++;
3549
3550         if (n_ssids > wiphy->max_scan_ssids)
3551                 return -EINVAL;
3552
3553         if (info->attrs[NL80211_ATTR_IE])
3554                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3555         else
3556                 ie_len = 0;
3557
3558         if (ie_len > wiphy->max_scan_ie_len)
3559                 return -EINVAL;
3560
3561         request = kzalloc(sizeof(*request)
3562                         + sizeof(*request->ssids) * n_ssids
3563                         + sizeof(*request->channels) * n_channels
3564                         + ie_len, GFP_KERNEL);
3565         if (!request)
3566                 return -ENOMEM;
3567
3568         if (n_ssids)
3569                 request->ssids = (void *)&request->channels[n_channels];
3570         request->n_ssids = n_ssids;
3571         if (ie_len) {
3572                 if (request->ssids)
3573                         request->ie = (void *)(request->ssids + n_ssids);
3574                 else
3575                         request->ie = (void *)(request->channels + n_channels);
3576         }
3577
3578         i = 0;
3579         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3580                 /* user specified, bail out if channel not found */
3581                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3582                         struct ieee80211_channel *chan;
3583
3584                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3585
3586                         if (!chan) {
3587                                 err = -EINVAL;
3588                                 goto out_free;
3589                         }
3590
3591                         /* ignore disabled channels */
3592                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3593                                 continue;
3594
3595                         request->channels[i] = chan;
3596                         i++;
3597                 }
3598         } else {
3599                 enum ieee80211_band band;
3600
3601                 /* all channels */
3602                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3603                         int j;
3604                         if (!wiphy->bands[band])
3605                                 continue;
3606                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3607                                 struct ieee80211_channel *chan;
3608
3609                                 chan = &wiphy->bands[band]->channels[j];
3610
3611                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3612                                         continue;
3613
3614                                 request->channels[i] = chan;
3615                                 i++;
3616                         }
3617                 }
3618         }
3619
3620         if (!i) {
3621                 err = -EINVAL;
3622                 goto out_free;
3623         }
3624
3625         request->n_channels = i;
3626
3627         i = 0;
3628         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3629                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3630                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3631                                 err = -EINVAL;
3632                                 goto out_free;
3633                         }
3634                         request->ssids[i].ssid_len = nla_len(attr);
3635                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3636                         i++;
3637                 }
3638         }
3639
3640         if (info->attrs[NL80211_ATTR_IE]) {
3641                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3642                 memcpy((void *)request->ie,
3643                        nla_data(info->attrs[NL80211_ATTR_IE]),
3644                        request->ie_len);
3645         }
3646
3647         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3648                 if (wiphy->bands[i])
3649                         request->rates[i] =
3650                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
3651
3652         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3653                 nla_for_each_nested(attr,
3654                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3655                                     tmp) {
3656                         enum ieee80211_band band = nla_type(attr);
3657
3658                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3659                                 err = -EINVAL;
3660                                 goto out_free;
3661                         }
3662                         err = ieee80211_get_ratemask(wiphy->bands[band],
3663                                                      nla_data(attr),
3664                                                      nla_len(attr),
3665                                                      &request->rates[band]);
3666                         if (err)
3667                                 goto out_free;
3668                 }
3669         }
3670
3671         request->no_cck =
3672                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3673
3674         request->dev = dev;
3675         request->wiphy = &rdev->wiphy;
3676
3677         rdev->scan_req = request;
3678         err = rdev->ops->scan(&rdev->wiphy, dev, request);
3679
3680         if (!err) {
3681                 nl80211_send_scan_start(rdev, dev);
3682                 dev_hold(dev);
3683         } else {
3684  out_free:
3685                 rdev->scan_req = NULL;
3686                 kfree(request);
3687         }
3688
3689         return err;
3690 }
3691
3692 static int nl80211_start_sched_scan(struct sk_buff *skb,
3693                                     struct genl_info *info)
3694 {
3695         struct cfg80211_sched_scan_request *request;
3696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3697         struct net_device *dev = info->user_ptr[1];
3698         struct nlattr *attr;
3699         struct wiphy *wiphy;
3700         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3701         u32 interval;
3702         enum ieee80211_band band;
3703         size_t ie_len;
3704         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3705
3706         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3707             !rdev->ops->sched_scan_start)
3708                 return -EOPNOTSUPP;
3709
3710         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3711                 return -EINVAL;
3712
3713         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3714                 return -EINVAL;
3715
3716         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3717         if (interval == 0)
3718                 return -EINVAL;
3719
3720         wiphy = &rdev->wiphy;
3721
3722         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3723                 n_channels = validate_scan_freqs(
3724                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3725                 if (!n_channels)
3726                         return -EINVAL;
3727         } else {
3728                 n_channels = 0;
3729
3730                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3731                         if (wiphy->bands[band])
3732                                 n_channels += wiphy->bands[band]->n_channels;
3733         }
3734
3735         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3736                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3737                                     tmp)
3738                         n_ssids++;
3739
3740         if (n_ssids > wiphy->max_sched_scan_ssids)
3741                 return -EINVAL;
3742
3743         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3744                 nla_for_each_nested(attr,
3745                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3746                                     tmp)
3747                         n_match_sets++;
3748
3749         if (n_match_sets > wiphy->max_match_sets)
3750                 return -EINVAL;
3751
3752         if (info->attrs[NL80211_ATTR_IE])
3753                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3754         else
3755                 ie_len = 0;
3756
3757         if (ie_len > wiphy->max_sched_scan_ie_len)
3758                 return -EINVAL;
3759
3760         mutex_lock(&rdev->sched_scan_mtx);
3761
3762         if (rdev->sched_scan_req) {
3763                 err = -EINPROGRESS;
3764                 goto out;
3765         }
3766
3767         request = kzalloc(sizeof(*request)
3768                         + sizeof(*request->ssids) * n_ssids
3769                         + sizeof(*request->match_sets) * n_match_sets
3770                         + sizeof(*request->channels) * n_channels
3771                         + ie_len, GFP_KERNEL);
3772         if (!request) {
3773                 err = -ENOMEM;
3774                 goto out;
3775         }
3776
3777         if (n_ssids)
3778                 request->ssids = (void *)&request->channels[n_channels];
3779         request->n_ssids = n_ssids;
3780         if (ie_len) {
3781                 if (request->ssids)
3782                         request->ie = (void *)(request->ssids + n_ssids);
3783                 else
3784                         request->ie = (void *)(request->channels + n_channels);
3785         }
3786
3787         if (n_match_sets) {
3788                 if (request->ie)
3789                         request->match_sets = (void *)(request->ie + ie_len);
3790                 else if (request->ssids)
3791                         request->match_sets =
3792                                 (void *)(request->ssids + n_ssids);
3793                 else
3794                         request->match_sets =
3795                                 (void *)(request->channels + n_channels);
3796         }
3797         request->n_match_sets = n_match_sets;
3798
3799         i = 0;
3800         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3801                 /* user specified, bail out if channel not found */
3802                 nla_for_each_nested(attr,
3803                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3804                                     tmp) {
3805                         struct ieee80211_channel *chan;
3806
3807                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3808
3809                         if (!chan) {
3810                                 err = -EINVAL;
3811                                 goto out_free;
3812                         }
3813
3814                         /* ignore disabled channels */
3815                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3816                                 continue;
3817
3818                         request->channels[i] = chan;
3819                         i++;
3820                 }
3821         } else {
3822                 /* all channels */
3823                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3824                         int j;
3825                         if (!wiphy->bands[band])
3826                                 continue;
3827                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3828                                 struct ieee80211_channel *chan;
3829
3830                                 chan = &wiphy->bands[band]->channels[j];
3831
3832                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3833                                         continue;
3834
3835                                 request->channels[i] = chan;
3836                                 i++;
3837                         }
3838                 }
3839         }
3840
3841         if (!i) {
3842                 err = -EINVAL;
3843                 goto out_free;
3844         }
3845
3846         request->n_channels = i;
3847
3848         i = 0;
3849         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3850                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3851                                     tmp) {
3852                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3853                                 err = -EINVAL;
3854                                 goto out_free;
3855                         }
3856                         request->ssids[i].ssid_len = nla_len(attr);
3857                         memcpy(request->ssids[i].ssid, nla_data(attr),
3858                                nla_len(attr));
3859                         i++;
3860                 }
3861         }
3862
3863         i = 0;
3864         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3865                 nla_for_each_nested(attr,
3866                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3867                                     tmp) {
3868                         struct nlattr *ssid;
3869
3870                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3871                                   nla_data(attr), nla_len(attr),
3872                                   nl80211_match_policy);
3873                         ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3874                         if (ssid) {
3875                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3876                                         err = -EINVAL;
3877                                         goto out_free;
3878                                 }
3879                                 memcpy(request->match_sets[i].ssid.ssid,
3880                                        nla_data(ssid), nla_len(ssid));
3881                                 request->match_sets[i].ssid.ssid_len =
3882                                         nla_len(ssid);
3883                         }
3884                         i++;
3885                 }
3886         }
3887
3888         if (info->attrs[NL80211_ATTR_IE]) {
3889                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3890                 memcpy((void *)request->ie,
3891                        nla_data(info->attrs[NL80211_ATTR_IE]),
3892                        request->ie_len);
3893         }
3894
3895         request->dev = dev;
3896         request->wiphy = &rdev->wiphy;
3897         request->interval = interval;
3898
3899         err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3900         if (!err) {
3901                 rdev->sched_scan_req = request;
3902                 nl80211_send_sched_scan(rdev, dev,
3903                                         NL80211_CMD_START_SCHED_SCAN);
3904                 goto out;
3905         }
3906
3907 out_free:
3908         kfree(request);
3909 out:
3910         mutex_unlock(&rdev->sched_scan_mtx);
3911         return err;
3912 }
3913
3914 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3915                                    struct genl_info *info)
3916 {
3917         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3918         int err;
3919
3920         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3921             !rdev->ops->sched_scan_stop)
3922                 return -EOPNOTSUPP;
3923
3924         mutex_lock(&rdev->sched_scan_mtx);
3925         err = __cfg80211_stop_sched_scan(rdev, false);
3926         mutex_unlock(&rdev->sched_scan_mtx);
3927
3928         return err;
3929 }
3930
3931 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3932                             u32 seq, int flags,
3933                             struct cfg80211_registered_device *rdev,
3934                             struct wireless_dev *wdev,
3935                             struct cfg80211_internal_bss *intbss)
3936 {
3937         struct cfg80211_bss *res = &intbss->pub;
3938         void *hdr;
3939         struct nlattr *bss;
3940         int i;
3941
3942         ASSERT_WDEV_LOCK(wdev);
3943
3944         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3945                              NL80211_CMD_NEW_SCAN_RESULTS);
3946         if (!hdr)
3947                 return -1;
3948
3949         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3950
3951         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3952         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3953
3954         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3955         if (!bss)
3956                 goto nla_put_failure;
3957         if (!is_zero_ether_addr(res->bssid))
3958                 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3959         if (res->information_elements && res->len_information_elements)
3960                 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3961                         res->len_information_elements,
3962                         res->information_elements);
3963         if (res->beacon_ies && res->len_beacon_ies &&
3964             res->beacon_ies != res->information_elements)
3965                 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3966                         res->len_beacon_ies, res->beacon_ies);
3967         if (res->tsf)
3968                 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3969         if (res->beacon_interval)
3970                 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3971         NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3972         NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3973         NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3974                 jiffies_to_msecs(jiffies - intbss->ts));
3975
3976         switch (rdev->wiphy.signal_type) {
3977         case CFG80211_SIGNAL_TYPE_MBM:
3978                 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3979                 break;
3980         case CFG80211_SIGNAL_TYPE_UNSPEC:
3981                 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3982                 break;
3983         default:
3984                 break;
3985         }
3986
3987         switch (wdev->iftype) {
3988         case NL80211_IFTYPE_P2P_CLIENT:
3989         case NL80211_IFTYPE_STATION:
3990                 if (intbss == wdev->current_bss)
3991                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3992                                     NL80211_BSS_STATUS_ASSOCIATED);
3993                 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3994                         if (intbss != wdev->auth_bsses[i])
3995                                 continue;
3996                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3997                                     NL80211_BSS_STATUS_AUTHENTICATED);
3998                         break;
3999                 }
4000                 break;
4001         case NL80211_IFTYPE_ADHOC:
4002                 if (intbss == wdev->current_bss)
4003                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4004                                     NL80211_BSS_STATUS_IBSS_JOINED);
4005                 break;
4006         default:
4007                 break;
4008         }
4009
4010         nla_nest_end(msg, bss);
4011
4012         return genlmsg_end(msg, hdr);
4013
4014  nla_put_failure:
4015         genlmsg_cancel(msg, hdr);
4016         return -EMSGSIZE;
4017 }
4018
4019 static int nl80211_dump_scan(struct sk_buff *skb,
4020                              struct netlink_callback *cb)
4021 {
4022         struct cfg80211_registered_device *rdev;
4023         struct net_device *dev;
4024         struct cfg80211_internal_bss *scan;
4025         struct wireless_dev *wdev;
4026         int start = cb->args[1], idx = 0;
4027         int err;
4028
4029         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4030         if (err)
4031                 return err;
4032
4033         wdev = dev->ieee80211_ptr;
4034
4035         wdev_lock(wdev);
4036         spin_lock_bh(&rdev->bss_lock);
4037         cfg80211_bss_expire(rdev);
4038
4039         cb->seq = rdev->bss_generation;
4040
4041         list_for_each_entry(scan, &rdev->bss_list, list) {
4042                 if (++idx <= start)
4043                         continue;
4044                 if (nl80211_send_bss(skb, cb,
4045                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4046                                 rdev, wdev, scan) < 0) {
4047                         idx--;
4048                         break;
4049                 }
4050         }
4051
4052         spin_unlock_bh(&rdev->bss_lock);
4053         wdev_unlock(wdev);
4054
4055         cb->args[1] = idx;
4056         nl80211_finish_netdev_dump(rdev);
4057
4058         return skb->len;
4059 }
4060
4061 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4062                                 int flags, struct net_device *dev,
4063                                 struct survey_info *survey)
4064 {
4065         void *hdr;
4066         struct nlattr *infoattr;
4067
4068         hdr = nl80211hdr_put(msg, pid, seq, flags,
4069                              NL80211_CMD_NEW_SURVEY_RESULTS);
4070         if (!hdr)
4071                 return -ENOMEM;
4072
4073         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4074
4075         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4076         if (!infoattr)
4077                 goto nla_put_failure;
4078
4079         NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4080                     survey->channel->center_freq);
4081         if (survey->filled & SURVEY_INFO_NOISE_DBM)
4082                 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4083                             survey->noise);
4084         if (survey->filled & SURVEY_INFO_IN_USE)
4085                 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4086         if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4087                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4088                             survey->channel_time);
4089         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4090                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4091                             survey->channel_time_busy);
4092         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4093                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4094                             survey->channel_time_ext_busy);
4095         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4096                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4097                             survey->channel_time_rx);
4098         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4099                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4100                             survey->channel_time_tx);
4101
4102         nla_nest_end(msg, infoattr);
4103
4104         return genlmsg_end(msg, hdr);
4105
4106  nla_put_failure:
4107         genlmsg_cancel(msg, hdr);
4108         return -EMSGSIZE;
4109 }
4110
4111 static int nl80211_dump_survey(struct sk_buff *skb,
4112                         struct netlink_callback *cb)
4113 {
4114         struct survey_info survey;
4115         struct cfg80211_registered_device *dev;
4116         struct net_device *netdev;
4117         int survey_idx = cb->args[1];
4118         int res;
4119
4120         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4121         if (res)
4122                 return res;
4123
4124         if (!dev->ops->dump_survey) {
4125                 res = -EOPNOTSUPP;
4126                 goto out_err;
4127         }
4128
4129         while (1) {
4130                 struct ieee80211_channel *chan;
4131
4132                 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4133                                             &survey);
4134                 if (res == -ENOENT)
4135                         break;
4136                 if (res)
4137                         goto out_err;
4138
4139                 /* Survey without a channel doesn't make sense */
4140                 if (!survey.channel) {
4141                         res = -EINVAL;
4142                         goto out;
4143                 }
4144
4145                 chan = ieee80211_get_channel(&dev->wiphy,
4146                                              survey.channel->center_freq);
4147                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4148                         survey_idx++;
4149                         continue;
4150                 }
4151
4152                 if (nl80211_send_survey(skb,
4153                                 NETLINK_CB(cb->skb).pid,
4154                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4155                                 netdev,
4156                                 &survey) < 0)
4157                         goto out;
4158                 survey_idx++;
4159         }
4160
4161  out:
4162         cb->args[1] = survey_idx;
4163         res = skb->len;
4164  out_err:
4165         nl80211_finish_netdev_dump(dev);
4166         return res;
4167 }
4168
4169 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4170 {
4171         return auth_type <= NL80211_AUTHTYPE_MAX;
4172 }
4173
4174 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4175 {
4176         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4177                                   NL80211_WPA_VERSION_2));
4178 }
4179
4180 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4181 {
4182         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4183         struct net_device *dev = info->user_ptr[1];
4184         struct ieee80211_channel *chan;
4185         const u8 *bssid, *ssid, *ie = NULL;
4186         int err, ssid_len, ie_len = 0;
4187         enum nl80211_auth_type auth_type;
4188         struct key_parse key;
4189         bool local_state_change;
4190
4191         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4192                 return -EINVAL;
4193
4194         if (!info->attrs[NL80211_ATTR_MAC])
4195                 return -EINVAL;
4196
4197         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4198                 return -EINVAL;
4199
4200         if (!info->attrs[NL80211_ATTR_SSID])
4201                 return -EINVAL;
4202
4203         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4204                 return -EINVAL;
4205
4206         err = nl80211_parse_key(info, &key);
4207         if (err)
4208                 return err;
4209
4210         if (key.idx >= 0) {
4211                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4212                         return -EINVAL;
4213                 if (!key.p.key || !key.p.key_len)
4214                         return -EINVAL;
4215                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4216                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4217                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4218                      key.p.key_len != WLAN_KEY_LEN_WEP104))
4219                         return -EINVAL;
4220                 if (key.idx > 4)
4221                         return -EINVAL;
4222         } else {
4223                 key.p.key_len = 0;
4224                 key.p.key = NULL;
4225         }
4226
4227         if (key.idx >= 0) {
4228                 int i;
4229                 bool ok = false;
4230                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4231                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4232                                 ok = true;
4233                                 break;
4234                         }
4235                 }
4236                 if (!ok)
4237                         return -EINVAL;
4238         }
4239
4240         if (!rdev->ops->auth)
4241                 return -EOPNOTSUPP;
4242
4243         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4244             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4245                 return -EOPNOTSUPP;
4246
4247         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4248         chan = ieee80211_get_channel(&rdev->wiphy,
4249                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4250         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4251                 return -EINVAL;
4252
4253         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4254         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4255
4256         if (info->attrs[NL80211_ATTR_IE]) {
4257                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4258                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4259         }
4260
4261         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4262         if (!nl80211_valid_auth_type(auth_type))
4263                 return -EINVAL;
4264
4265         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4266
4267         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4268                                   ssid, ssid_len, ie, ie_len,
4269                                   key.p.key, key.p.key_len, key.idx,
4270                                   local_state_change);
4271 }
4272
4273 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4274                                    struct genl_info *info,
4275                                    struct cfg80211_crypto_settings *settings,
4276                                    int cipher_limit)
4277 {
4278         memset(settings, 0, sizeof(*settings));
4279
4280         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4281
4282         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4283                 u16 proto;
4284                 proto = nla_get_u16(
4285                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4286                 settings->control_port_ethertype = cpu_to_be16(proto);
4287                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4288                     proto != ETH_P_PAE)
4289                         return -EINVAL;
4290                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4291                         settings->control_port_no_encrypt = true;
4292         } else
4293                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4294
4295         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4296                 void *data;
4297                 int len, i;
4298
4299                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4300                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4301                 settings->n_ciphers_pairwise = len / sizeof(u32);
4302
4303                 if (len % sizeof(u32))
4304                         return -EINVAL;
4305
4306                 if (settings->n_ciphers_pairwise > cipher_limit)
4307                         return -EINVAL;
4308
4309                 memcpy(settings->ciphers_pairwise, data, len);
4310
4311                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4312                         if (!cfg80211_supported_cipher_suite(
4313                                         &rdev->wiphy,
4314                                         settings->ciphers_pairwise[i]))
4315                                 return -EINVAL;
4316         }
4317
4318         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4319                 settings->cipher_group =
4320                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4321                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4322                                                      settings->cipher_group))
4323                         return -EINVAL;
4324         }
4325
4326         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4327                 settings->wpa_versions =
4328                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4329                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4330                         return -EINVAL;
4331         }
4332
4333         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4334                 void *data;
4335                 int len;
4336
4337                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4338                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4339                 settings->n_akm_suites = len / sizeof(u32);
4340
4341                 if (len % sizeof(u32))
4342                         return -EINVAL;
4343
4344                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4345                         return -EINVAL;
4346
4347                 memcpy(settings->akm_suites, data, len);
4348         }
4349
4350         return 0;
4351 }
4352
4353 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4354 {
4355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4356         struct net_device *dev = info->user_ptr[1];
4357         struct cfg80211_crypto_settings crypto;
4358         struct ieee80211_channel *chan;
4359         const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4360         int err, ssid_len, ie_len = 0;
4361         bool use_mfp = false;
4362
4363         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4364                 return -EINVAL;
4365
4366         if (!info->attrs[NL80211_ATTR_MAC] ||
4367             !info->attrs[NL80211_ATTR_SSID] ||
4368             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4369                 return -EINVAL;
4370
4371         if (!rdev->ops->assoc)
4372                 return -EOPNOTSUPP;
4373
4374         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4375             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4376                 return -EOPNOTSUPP;
4377
4378         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4379
4380         chan = ieee80211_get_channel(&rdev->wiphy,
4381                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4382         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4383                 return -EINVAL;
4384
4385         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4386         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4387
4388         if (info->attrs[NL80211_ATTR_IE]) {
4389                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4390                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4391         }
4392
4393         if (info->attrs[NL80211_ATTR_USE_MFP]) {
4394                 enum nl80211_mfp mfp =
4395                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4396                 if (mfp == NL80211_MFP_REQUIRED)
4397                         use_mfp = true;
4398                 else if (mfp != NL80211_MFP_NO)
4399                         return -EINVAL;
4400         }
4401
4402         if (info->attrs[NL80211_ATTR_PREV_BSSID])
4403                 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4404
4405         err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4406         if (!err)
4407                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4408                                           ssid, ssid_len, ie, ie_len, use_mfp,
4409                                           &crypto);
4410
4411         return err;
4412 }
4413
4414 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4415 {
4416         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4417         struct net_device *dev = info->user_ptr[1];
4418         const u8 *ie = NULL, *bssid;
4419         int ie_len = 0;
4420         u16 reason_code;
4421         bool local_state_change;
4422
4423         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4424                 return -EINVAL;
4425
4426         if (!info->attrs[NL80211_ATTR_MAC])
4427                 return -EINVAL;
4428
4429         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4430                 return -EINVAL;
4431
4432         if (!rdev->ops->deauth)
4433                 return -EOPNOTSUPP;
4434
4435         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4436             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4437                 return -EOPNOTSUPP;
4438
4439         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4440
4441         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4442         if (reason_code == 0) {
4443                 /* Reason Code 0 is reserved */
4444                 return -EINVAL;
4445         }
4446
4447         if (info->attrs[NL80211_ATTR_IE]) {
4448                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4449                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4450         }
4451
4452         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4453
4454         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4455                                     local_state_change);
4456 }
4457
4458 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4459 {
4460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4461         struct net_device *dev = info->user_ptr[1];
4462         const u8 *ie = NULL, *bssid;
4463         int ie_len = 0;
4464         u16 reason_code;
4465         bool local_state_change;
4466
4467         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4468                 return -EINVAL;
4469
4470         if (!info->attrs[NL80211_ATTR_MAC])
4471                 return -EINVAL;
4472
4473         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4474                 return -EINVAL;
4475
4476         if (!rdev->ops->disassoc)
4477                 return -EOPNOTSUPP;
4478
4479         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4480             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4481                 return -EOPNOTSUPP;
4482
4483         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4484
4485         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4486         if (reason_code == 0) {
4487                 /* Reason Code 0 is reserved */
4488                 return -EINVAL;
4489         }
4490
4491         if (info->attrs[NL80211_ATTR_IE]) {
4492                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4493                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4494         }
4495
4496         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4497
4498         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4499                                       local_state_change);
4500 }
4501
4502 static bool
4503 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4504                          int mcast_rate[IEEE80211_NUM_BANDS],
4505                          int rateval)
4506 {
4507         struct wiphy *wiphy = &rdev->wiphy;
4508         bool found = false;
4509         int band, i;
4510
4511         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4512                 struct ieee80211_supported_band *sband;
4513
4514                 sband = wiphy->bands[band];
4515                 if (!sband)
4516                         continue;
4517
4518                 for (i = 0; i < sband->n_bitrates; i++) {
4519                         if (sband->bitrates[i].bitrate == rateval) {
4520                                 mcast_rate[band] = i + 1;
4521                                 found = true;
4522                                 break;
4523                         }
4524                 }
4525         }
4526
4527         return found;
4528 }
4529
4530 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4531 {
4532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4533         struct net_device *dev = info->user_ptr[1];
4534         struct cfg80211_ibss_params ibss;
4535         struct wiphy *wiphy;
4536         struct cfg80211_cached_keys *connkeys = NULL;
4537         int err;
4538
4539         memset(&ibss, 0, sizeof(ibss));
4540
4541         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4542                 return -EINVAL;
4543
4544         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4545             !info->attrs[NL80211_ATTR_SSID] ||
4546             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4547                 return -EINVAL;
4548
4549         ibss.beacon_interval = 100;
4550
4551         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4552                 ibss.beacon_interval =
4553                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4554                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4555                         return -EINVAL;
4556         }
4557
4558         if (!rdev->ops->join_ibss)
4559                 return -EOPNOTSUPP;
4560
4561         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4562                 return -EOPNOTSUPP;
4563
4564         wiphy = &rdev->wiphy;
4565
4566         if (info->attrs[NL80211_ATTR_MAC]) {
4567                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4568
4569                 if (!is_valid_ether_addr(ibss.bssid))
4570                         return -EINVAL;
4571         }
4572         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4573         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4574
4575         if (info->attrs[NL80211_ATTR_IE]) {
4576                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4577                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4578         }
4579
4580         ibss.channel = ieee80211_get_channel(wiphy,
4581                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4582         if (!ibss.channel ||
4583             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4584             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4585                 return -EINVAL;
4586
4587         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4588         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4589
4590         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4591                 u8 *rates =
4592                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4593                 int n_rates =
4594                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4595                 struct ieee80211_supported_band *sband =
4596                         wiphy->bands[ibss.channel->band];
4597                 int err;
4598
4599                 err = ieee80211_get_ratemask(sband, rates, n_rates,
4600                                              &ibss.basic_rates);
4601                 if (err)
4602                         return err;
4603         }
4604
4605         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4606             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4607                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4608                 return -EINVAL;
4609
4610         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4611                 connkeys = nl80211_parse_connkeys(rdev,
4612                                         info->attrs[NL80211_ATTR_KEYS]);
4613                 if (IS_ERR(connkeys))
4614                         return PTR_ERR(connkeys);
4615         }
4616
4617         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4618         if (err)
4619                 kfree(connkeys);
4620         return err;
4621 }
4622
4623 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4624 {
4625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4626         struct net_device *dev = info->user_ptr[1];
4627
4628         if (!rdev->ops->leave_ibss)
4629                 return -EOPNOTSUPP;
4630
4631         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4632                 return -EOPNOTSUPP;
4633
4634         return cfg80211_leave_ibss(rdev, dev, false);
4635 }
4636
4637 #ifdef CONFIG_NL80211_TESTMODE
4638 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4639         .name = "testmode",
4640 };
4641
4642 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4643 {
4644         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4645         int err;
4646
4647         if (!info->attrs[NL80211_ATTR_TESTDATA])
4648                 return -EINVAL;
4649
4650         err = -EOPNOTSUPP;
4651         if (rdev->ops->testmode_cmd) {
4652                 rdev->testmode_info = info;
4653                 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4654                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4655                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4656                 rdev->testmode_info = NULL;
4657         }
4658
4659         return err;
4660 }
4661
4662 static int nl80211_testmode_dump(struct sk_buff *skb,
4663                                  struct netlink_callback *cb)
4664 {
4665         struct cfg80211_registered_device *dev;
4666         int err;
4667         long phy_idx;
4668         void *data = NULL;
4669         int data_len = 0;
4670
4671         if (cb->args[0]) {
4672                 /*
4673                  * 0 is a valid index, but not valid for args[0],
4674                  * so we need to offset by 1.
4675                  */
4676                 phy_idx = cb->args[0] - 1;
4677         } else {
4678                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4679                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
4680                                   nl80211_policy);
4681                 if (err)
4682                         return err;
4683                 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4684                         return -EINVAL;
4685                 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4686                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4687                         cb->args[1] =
4688                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4689         }
4690
4691         if (cb->args[1]) {
4692                 data = nla_data((void *)cb->args[1]);
4693                 data_len = nla_len((void *)cb->args[1]);
4694         }
4695
4696         mutex_lock(&cfg80211_mutex);
4697         dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4698         if (!dev) {
4699                 mutex_unlock(&cfg80211_mutex);
4700                 return -ENOENT;
4701         }
4702         cfg80211_lock_rdev(dev);
4703         mutex_unlock(&cfg80211_mutex);
4704
4705         if (!dev->ops->testmode_dump) {
4706                 err = -EOPNOTSUPP;
4707                 goto out_err;
4708         }
4709
4710         while (1) {
4711                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4712                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
4713                                            NL80211_CMD_TESTMODE);
4714                 struct nlattr *tmdata;
4715
4716                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4717                         genlmsg_cancel(skb, hdr);
4718                         break;
4719                 }
4720
4721                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4722                 if (!tmdata) {
4723                         genlmsg_cancel(skb, hdr);
4724                         break;
4725                 }
4726                 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4727                                               data, data_len);
4728                 nla_nest_end(skb, tmdata);
4729
4730                 if (err == -ENOBUFS || err == -ENOENT) {
4731                         genlmsg_cancel(skb, hdr);
4732                         break;
4733                 } else if (err) {
4734                         genlmsg_cancel(skb, hdr);
4735                         goto out_err;
4736                 }
4737
4738                 genlmsg_end(skb, hdr);
4739         }
4740
4741         err = skb->len;
4742         /* see above */
4743         cb->args[0] = phy_idx + 1;
4744  out_err:
4745         cfg80211_unlock_rdev(dev);
4746         return err;
4747 }
4748
4749 static struct sk_buff *
4750 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4751                               int approxlen, u32 pid, u32 seq, gfp_t gfp)
4752 {
4753         struct sk_buff *skb;
4754         void *hdr;
4755         struct nlattr *data;
4756
4757         skb = nlmsg_new(approxlen + 100, gfp);
4758         if (!skb)
4759                 return NULL;
4760
4761         hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4762         if (!hdr) {
4763                 kfree_skb(skb);
4764                 return NULL;
4765         }
4766
4767         NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4768         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4769
4770         ((void **)skb->cb)[0] = rdev;
4771         ((void **)skb->cb)[1] = hdr;
4772         ((void **)skb->cb)[2] = data;
4773
4774         return skb;
4775
4776  nla_put_failure:
4777         kfree_skb(skb);
4778         return NULL;
4779 }
4780
4781 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4782                                                   int approxlen)
4783 {
4784         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4785
4786         if (WARN_ON(!rdev->testmode_info))
4787                 return NULL;
4788
4789         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4790                                 rdev->testmode_info->snd_pid,
4791                                 rdev->testmode_info->snd_seq,
4792                                 GFP_KERNEL);
4793 }
4794 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4795
4796 int cfg80211_testmode_reply(struct sk_buff *skb)
4797 {
4798         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4799         void *hdr = ((void **)skb->cb)[1];
4800         struct nlattr *data = ((void **)skb->cb)[2];
4801
4802         if (WARN_ON(!rdev->testmode_info)) {
4803                 kfree_skb(skb);
4804                 return -EINVAL;
4805         }
4806
4807         nla_nest_end(skb, data);
4808         genlmsg_end(skb, hdr);
4809         return genlmsg_reply(skb, rdev->testmode_info);
4810 }
4811 EXPORT_SYMBOL(cfg80211_testmode_reply);
4812
4813 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4814                                                   int approxlen, gfp_t gfp)
4815 {
4816         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4817
4818         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4819 }
4820 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4821
4822 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4823 {
4824         void *hdr = ((void **)skb->cb)[1];
4825         struct nlattr *data = ((void **)skb->cb)[2];
4826
4827         nla_nest_end(skb, data);
4828         genlmsg_end(skb, hdr);
4829         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4830 }
4831 EXPORT_SYMBOL(cfg80211_testmode_event);
4832 #endif
4833
4834 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4835 {
4836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4837         struct net_device *dev = info->user_ptr[1];
4838         struct cfg80211_connect_params connect;
4839         struct wiphy *wiphy;
4840         struct cfg80211_cached_keys *connkeys = NULL;
4841         int err;
4842
4843         memset(&connect, 0, sizeof(connect));
4844
4845         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4846                 return -EINVAL;
4847
4848         if (!info->attrs[NL80211_ATTR_SSID] ||
4849             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4850                 return -EINVAL;
4851
4852         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4853                 connect.auth_type =
4854                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4855                 if (!nl80211_valid_auth_type(connect.auth_type))
4856                         return -EINVAL;
4857         } else
4858                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4859
4860         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4861
4862         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4863                                       NL80211_MAX_NR_CIPHER_SUITES);
4864         if (err)
4865                 return err;
4866
4867         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4868             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4869                 return -EOPNOTSUPP;
4870
4871         wiphy = &rdev->wiphy;
4872
4873         if (info->attrs[NL80211_ATTR_MAC])
4874                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4875         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4876         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4877
4878         if (info->attrs[NL80211_ATTR_IE]) {
4879                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4880                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4881         }
4882
4883         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4884                 connect.channel =
4885                         ieee80211_get_channel(wiphy,
4886                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4887                 if (!connect.channel ||
4888                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
4889                         return -EINVAL;
4890         }
4891
4892         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4893                 connkeys = nl80211_parse_connkeys(rdev,
4894                                         info->attrs[NL80211_ATTR_KEYS]);
4895                 if (IS_ERR(connkeys))
4896                         return PTR_ERR(connkeys);
4897         }
4898
4899         err = cfg80211_connect(rdev, dev, &connect, connkeys);
4900         if (err)
4901                 kfree(connkeys);
4902         return err;
4903 }
4904
4905 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4906 {
4907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4908         struct net_device *dev = info->user_ptr[1];
4909         u16 reason;
4910
4911         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4912                 reason = WLAN_REASON_DEAUTH_LEAVING;
4913         else
4914                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4915
4916         if (reason == 0)
4917                 return -EINVAL;
4918
4919         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4920             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4921                 return -EOPNOTSUPP;
4922
4923         return cfg80211_disconnect(rdev, dev, reason, true);
4924 }
4925
4926 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4927 {
4928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4929         struct net *net;
4930         int err;
4931         u32 pid;
4932
4933         if (!info->attrs[NL80211_ATTR_PID])
4934                 return -EINVAL;
4935
4936         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4937
4938         net = get_net_ns_by_pid(pid);
4939         if (IS_ERR(net))
4940                 return PTR_ERR(net);
4941
4942         err = 0;
4943
4944         /* check if anything to do */
4945         if (!net_eq(wiphy_net(&rdev->wiphy), net))
4946                 err = cfg80211_switch_netns(rdev, net);
4947
4948         put_net(net);
4949         return err;
4950 }
4951
4952 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4953 {
4954         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4955         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4956                         struct cfg80211_pmksa *pmksa) = NULL;
4957         struct net_device *dev = info->user_ptr[1];
4958         struct cfg80211_pmksa pmksa;
4959
4960         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4961
4962         if (!info->attrs[NL80211_ATTR_MAC])
4963                 return -EINVAL;
4964
4965         if (!info->attrs[NL80211_ATTR_PMKID])
4966                 return -EINVAL;
4967
4968         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4969         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4970
4971         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4972             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4973                 return -EOPNOTSUPP;
4974
4975         switch (info->genlhdr->cmd) {
4976         case NL80211_CMD_SET_PMKSA:
4977                 rdev_ops = rdev->ops->set_pmksa;
4978                 break;
4979         case NL80211_CMD_DEL_PMKSA:
4980                 rdev_ops = rdev->ops->del_pmksa;
4981                 break;
4982         default:
4983                 WARN_ON(1);
4984                 break;
4985         }
4986
4987         if (!rdev_ops)
4988                 return -EOPNOTSUPP;
4989
4990         return rdev_ops(&rdev->wiphy, dev, &pmksa);
4991 }
4992
4993 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4994 {
4995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4996         struct net_device *dev = info->user_ptr[1];
4997
4998         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4999             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5000                 return -EOPNOTSUPP;
5001
5002         if (!rdev->ops->flush_pmksa)
5003                 return -EOPNOTSUPP;
5004
5005         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5006 }
5007
5008 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5009 {
5010         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5011         struct net_device *dev = info->user_ptr[1];
5012         u8 action_code, dialog_token;
5013         u16 status_code;
5014         u8 *peer;
5015
5016         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5017             !rdev->ops->tdls_mgmt)
5018                 return -EOPNOTSUPP;
5019
5020         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5021             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5022             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5023             !info->attrs[NL80211_ATTR_IE] ||
5024             !info->attrs[NL80211_ATTR_MAC])
5025                 return -EINVAL;
5026
5027         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5028         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5029         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5030         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5031
5032         return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5033                                     dialog_token, status_code,
5034                                     nla_data(info->attrs[NL80211_ATTR_IE]),
5035                                     nla_len(info->attrs[NL80211_ATTR_IE]));
5036 }
5037
5038 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5039 {
5040         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5041         struct net_device *dev = info->user_ptr[1];
5042         enum nl80211_tdls_operation operation;
5043         u8 *peer;
5044
5045         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5046             !rdev->ops->tdls_oper)
5047                 return -EOPNOTSUPP;
5048
5049         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5050             !info->attrs[NL80211_ATTR_MAC])
5051                 return -EINVAL;
5052
5053         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5054         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5055
5056         return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5057 }
5058
5059 static int nl80211_remain_on_channel(struct sk_buff *skb,
5060                                      struct genl_info *info)
5061 {
5062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5063         struct net_device *dev = info->user_ptr[1];
5064         struct ieee80211_channel *chan;
5065         struct sk_buff *msg;
5066         void *hdr;
5067         u64 cookie;
5068         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5069         u32 freq, duration;
5070         int err;
5071
5072         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5073             !info->attrs[NL80211_ATTR_DURATION])
5074                 return -EINVAL;
5075
5076         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5077
5078         /*
5079          * We should be on that channel for at least one jiffie,
5080          * and more than 5 seconds seems excessive.
5081          */
5082         if (!duration || !msecs_to_jiffies(duration) ||
5083             duration > rdev->wiphy.max_remain_on_channel_duration)
5084                 return -EINVAL;
5085
5086         if (!rdev->ops->remain_on_channel)
5087                 return -EOPNOTSUPP;
5088
5089         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5090                 channel_type = nla_get_u32(
5091                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5092                 if (channel_type != NL80211_CHAN_NO_HT &&
5093                     channel_type != NL80211_CHAN_HT20 &&
5094                     channel_type != NL80211_CHAN_HT40PLUS &&
5095                     channel_type != NL80211_CHAN_HT40MINUS)
5096                         return -EINVAL;
5097         }
5098
5099         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5100         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5101         if (chan == NULL)
5102                 return -EINVAL;
5103
5104         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5105         if (!msg)
5106                 return -ENOMEM;
5107
5108         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5109                              NL80211_CMD_REMAIN_ON_CHANNEL);
5110
5111         if (IS_ERR(hdr)) {
5112                 err = PTR_ERR(hdr);
5113                 goto free_msg;
5114         }
5115
5116         err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5117                                            channel_type, duration, &cookie);
5118
5119         if (err)
5120                 goto free_msg;
5121
5122         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5123
5124         genlmsg_end(msg, hdr);
5125
5126         return genlmsg_reply(msg, info);
5127
5128  nla_put_failure:
5129         err = -ENOBUFS;
5130  free_msg:
5131         nlmsg_free(msg);
5132         return err;
5133 }
5134
5135 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5136                                             struct genl_info *info)
5137 {
5138         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5139         struct net_device *dev = info->user_ptr[1];
5140         u64 cookie;
5141
5142         if (!info->attrs[NL80211_ATTR_COOKIE])
5143                 return -EINVAL;
5144
5145         if (!rdev->ops->cancel_remain_on_channel)
5146                 return -EOPNOTSUPP;
5147
5148         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5149
5150         return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5151 }
5152
5153 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5154                            u8 *rates, u8 rates_len)
5155 {
5156         u8 i;
5157         u32 mask = 0;
5158
5159         for (i = 0; i < rates_len; i++) {
5160                 int rate = (rates[i] & 0x7f) * 5;
5161                 int ridx;
5162                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5163                         struct ieee80211_rate *srate =
5164                                 &sband->bitrates[ridx];
5165                         if (rate == srate->bitrate) {
5166                                 mask |= 1 << ridx;
5167                                 break;
5168                         }
5169                 }
5170                 if (ridx == sband->n_bitrates)
5171                         return 0; /* rate not found */
5172         }
5173
5174         return mask;
5175 }
5176
5177 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5178         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5179                                     .len = NL80211_MAX_SUPP_RATES },
5180 };
5181
5182 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5183                                        struct genl_info *info)
5184 {
5185         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5186         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5187         struct cfg80211_bitrate_mask mask;
5188         int rem, i;
5189         struct net_device *dev = info->user_ptr[1];
5190         struct nlattr *tx_rates;
5191         struct ieee80211_supported_band *sband;
5192
5193         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5194                 return -EINVAL;
5195
5196         if (!rdev->ops->set_bitrate_mask)
5197                 return -EOPNOTSUPP;
5198
5199         memset(&mask, 0, sizeof(mask));
5200         /* Default to all rates enabled */
5201         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5202                 sband = rdev->wiphy.bands[i];
5203                 mask.control[i].legacy =
5204                         sband ? (1 << sband->n_bitrates) - 1 : 0;
5205         }
5206
5207         /*
5208          * The nested attribute uses enum nl80211_band as the index. This maps
5209          * directly to the enum ieee80211_band values used in cfg80211.
5210          */
5211         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5212         {
5213                 enum ieee80211_band band = nla_type(tx_rates);
5214                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5215                         return -EINVAL;
5216                 sband = rdev->wiphy.bands[band];
5217                 if (sband == NULL)
5218                         return -EINVAL;
5219                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5220                           nla_len(tx_rates), nl80211_txattr_policy);
5221                 if (tb[NL80211_TXRATE_LEGACY]) {
5222                         mask.control[band].legacy = rateset_to_mask(
5223                                 sband,
5224                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5225                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5226                         if (mask.control[band].legacy == 0)
5227                                 return -EINVAL;
5228                 }
5229         }
5230
5231         return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5232 }
5233
5234 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5235 {
5236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5237         struct net_device *dev = info->user_ptr[1];
5238         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5239
5240         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5241                 return -EINVAL;
5242
5243         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5244                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5245
5246         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5247             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5248             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5249             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5250             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5251             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5252             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5253                 return -EOPNOTSUPP;
5254
5255         /* not much point in registering if we can't reply */
5256         if (!rdev->ops->mgmt_tx)
5257                 return -EOPNOTSUPP;
5258
5259         return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5260                         frame_type,
5261                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5262                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5263 }
5264
5265 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5266 {
5267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5268         struct net_device *dev = info->user_ptr[1];
5269         struct ieee80211_channel *chan;
5270         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5271         bool channel_type_valid = false;
5272         u32 freq;
5273         int err;
5274         void *hdr;
5275         u64 cookie;
5276         struct sk_buff *msg;
5277         unsigned int wait = 0;
5278         bool offchan;
5279         bool no_cck;
5280
5281         if (!info->attrs[NL80211_ATTR_FRAME] ||
5282             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5283                 return -EINVAL;
5284
5285         if (!rdev->ops->mgmt_tx)
5286                 return -EOPNOTSUPP;
5287
5288         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5289             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5290             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5291             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5292             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5293             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5294             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5295                 return -EOPNOTSUPP;
5296
5297         if (info->attrs[NL80211_ATTR_DURATION]) {
5298                 if (!rdev->ops->mgmt_tx_cancel_wait)
5299                         return -EINVAL;
5300                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5301         }
5302
5303         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5304                 channel_type = nla_get_u32(
5305                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5306                 if (channel_type != NL80211_CHAN_NO_HT &&
5307                     channel_type != NL80211_CHAN_HT20 &&
5308                     channel_type != NL80211_CHAN_HT40PLUS &&
5309                     channel_type != NL80211_CHAN_HT40MINUS)
5310                         return -EINVAL;
5311                 channel_type_valid = true;
5312         }
5313
5314         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5315
5316         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5317
5318         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5319         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5320         if (chan == NULL)
5321                 return -EINVAL;
5322
5323         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5324         if (!msg)
5325                 return -ENOMEM;
5326
5327         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5328                              NL80211_CMD_FRAME);
5329
5330         if (IS_ERR(hdr)) {
5331                 err = PTR_ERR(hdr);
5332                 goto free_msg;
5333         }
5334         err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5335                                     channel_type_valid, wait,
5336                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
5337                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
5338                                     no_cck, &cookie);
5339         if (err)
5340                 goto free_msg;
5341
5342         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5343
5344         genlmsg_end(msg, hdr);
5345         return genlmsg_reply(msg, info);
5346
5347  nla_put_failure:
5348         err = -ENOBUFS;
5349  free_msg:
5350         nlmsg_free(msg);
5351         return err;
5352 }
5353
5354 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5355 {
5356         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5357         struct net_device *dev = info->user_ptr[1];
5358         u64 cookie;
5359
5360         if (!info->attrs[NL80211_ATTR_COOKIE])
5361                 return -EINVAL;
5362
5363         if (!rdev->ops->mgmt_tx_cancel_wait)
5364                 return -EOPNOTSUPP;
5365
5366         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5367             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5368             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5369             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5370             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5371             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5372                 return -EOPNOTSUPP;
5373
5374         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5375
5376         return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5377 }
5378
5379 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5380 {
5381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5382         struct wireless_dev *wdev;
5383         struct net_device *dev = info->user_ptr[1];
5384         u8 ps_state;
5385         bool state;
5386         int err;
5387
5388         if (!info->attrs[NL80211_ATTR_PS_STATE])
5389                 return -EINVAL;
5390
5391         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5392
5393         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5394                 return -EINVAL;
5395
5396         wdev = dev->ieee80211_ptr;
5397
5398         if (!rdev->ops->set_power_mgmt)
5399                 return -EOPNOTSUPP;
5400
5401         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5402
5403         if (state == wdev->ps)
5404                 return 0;
5405
5406         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5407                                         wdev->ps_timeout);
5408         if (!err)
5409                 wdev->ps = state;
5410         return err;
5411 }
5412
5413 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5414 {
5415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5416         enum nl80211_ps_state ps_state;
5417         struct wireless_dev *wdev;
5418         struct net_device *dev = info->user_ptr[1];
5419         struct sk_buff *msg;
5420         void *hdr;
5421         int err;
5422
5423         wdev = dev->ieee80211_ptr;
5424
5425         if (!rdev->ops->set_power_mgmt)
5426                 return -EOPNOTSUPP;
5427
5428         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5429         if (!msg)
5430                 return -ENOMEM;
5431
5432         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5433                              NL80211_CMD_GET_POWER_SAVE);
5434         if (!hdr) {
5435                 err = -ENOBUFS;
5436                 goto free_msg;
5437         }
5438
5439         if (wdev->ps)
5440                 ps_state = NL80211_PS_ENABLED;
5441         else
5442                 ps_state = NL80211_PS_DISABLED;
5443
5444         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5445
5446         genlmsg_end(msg, hdr);
5447         return genlmsg_reply(msg, info);
5448
5449  nla_put_failure:
5450         err = -ENOBUFS;
5451  free_msg:
5452         nlmsg_free(msg);
5453         return err;
5454 }
5455
5456 static struct nla_policy
5457 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5458         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5459         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5460         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5461 };
5462
5463 static int nl80211_set_cqm_rssi(struct genl_info *info,
5464                                 s32 threshold, u32 hysteresis)
5465 {
5466         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5467         struct wireless_dev *wdev;
5468         struct net_device *dev = info->user_ptr[1];
5469
5470         if (threshold > 0)
5471                 return -EINVAL;
5472
5473         wdev = dev->ieee80211_ptr;
5474
5475         if (!rdev->ops->set_cqm_rssi_config)
5476                 return -EOPNOTSUPP;
5477
5478         if (wdev->iftype != NL80211_IFTYPE_STATION &&
5479             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5480                 return -EOPNOTSUPP;
5481
5482         return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5483                                               threshold, hysteresis);
5484 }
5485
5486 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5487 {
5488         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5489         struct nlattr *cqm;
5490         int err;
5491
5492         cqm = info->attrs[NL80211_ATTR_CQM];
5493         if (!cqm) {
5494                 err = -EINVAL;
5495                 goto out;
5496         }
5497
5498         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5499                                nl80211_attr_cqm_policy);
5500         if (err)
5501                 goto out;
5502
5503         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5504             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5505                 s32 threshold;
5506                 u32 hysteresis;
5507                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5508                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5509                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5510         } else
5511                 err = -EINVAL;
5512
5513 out:
5514         return err;
5515 }
5516
5517 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5518 {
5519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5520         struct net_device *dev = info->user_ptr[1];
5521         struct mesh_config cfg;
5522         struct mesh_setup setup;
5523         int err;
5524
5525         /* start with default */
5526         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5527         memcpy(&setup, &default_mesh_setup, sizeof(setup));
5528
5529         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5530                 /* and parse parameters if given */
5531                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5532                 if (err)
5533                         return err;
5534         }
5535
5536         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5537             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5538                 return -EINVAL;
5539
5540         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5541         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5542
5543         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5544                 /* parse additional setup parameters if given */
5545                 err = nl80211_parse_mesh_setup(info, &setup);
5546                 if (err)
5547                         return err;
5548         }
5549
5550         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5551 }
5552
5553 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5554 {
5555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5556         struct net_device *dev = info->user_ptr[1];
5557
5558         return cfg80211_leave_mesh(rdev, dev);
5559 }
5560
5561 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5562 {
5563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5564         struct sk_buff *msg;
5565         void *hdr;
5566
5567         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5568                 return -EOPNOTSUPP;
5569
5570         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5571         if (!msg)
5572                 return -ENOMEM;
5573
5574         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5575                              NL80211_CMD_GET_WOWLAN);
5576         if (!hdr)
5577                 goto nla_put_failure;
5578
5579         if (rdev->wowlan) {
5580                 struct nlattr *nl_wowlan;
5581
5582                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5583                 if (!nl_wowlan)
5584                         goto nla_put_failure;
5585
5586                 if (rdev->wowlan->any)
5587                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5588                 if (rdev->wowlan->disconnect)
5589                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5590                 if (rdev->wowlan->magic_pkt)
5591                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5592                 if (rdev->wowlan->gtk_rekey_failure)
5593                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5594                 if (rdev->wowlan->eap_identity_req)
5595                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5596                 if (rdev->wowlan->four_way_handshake)
5597                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5598                 if (rdev->wowlan->rfkill_release)
5599                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5600                 if (rdev->wowlan->n_patterns) {
5601                         struct nlattr *nl_pats, *nl_pat;
5602                         int i, pat_len;
5603
5604                         nl_pats = nla_nest_start(msg,
5605                                         NL80211_WOWLAN_TRIG_PKT_PATTERN);
5606                         if (!nl_pats)
5607                                 goto nla_put_failure;
5608
5609                         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5610                                 nl_pat = nla_nest_start(msg, i + 1);
5611                                 if (!nl_pat)
5612                                         goto nla_put_failure;
5613                                 pat_len = rdev->wowlan->patterns[i].pattern_len;
5614                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5615                                         DIV_ROUND_UP(pat_len, 8),
5616                                         rdev->wowlan->patterns[i].mask);
5617                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5618                                         pat_len,
5619                                         rdev->wowlan->patterns[i].pattern);
5620                                 nla_nest_end(msg, nl_pat);
5621                         }
5622                         nla_nest_end(msg, nl_pats);
5623                 }
5624
5625                 nla_nest_end(msg, nl_wowlan);
5626         }
5627
5628         genlmsg_end(msg, hdr);
5629         return genlmsg_reply(msg, info);
5630
5631 nla_put_failure:
5632         nlmsg_free(msg);
5633         return -ENOBUFS;
5634 }
5635
5636 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5637 {
5638         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5639         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5640         struct cfg80211_wowlan no_triggers = {};
5641         struct cfg80211_wowlan new_triggers = {};
5642         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5643         int err, i;
5644
5645         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5646                 return -EOPNOTSUPP;
5647
5648         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5649                 goto no_triggers;
5650
5651         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5652                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5653                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5654                         nl80211_wowlan_policy);
5655         if (err)
5656                 return err;
5657
5658         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5659                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5660                         return -EINVAL;
5661                 new_triggers.any = true;
5662         }
5663
5664         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5665                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5666                         return -EINVAL;
5667                 new_triggers.disconnect = true;
5668         }
5669
5670         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5671                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5672                         return -EINVAL;
5673                 new_triggers.magic_pkt = true;
5674         }
5675
5676         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5677                 return -EINVAL;
5678
5679         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5680                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5681                         return -EINVAL;
5682                 new_triggers.gtk_rekey_failure = true;
5683         }
5684
5685         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5686                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5687                         return -EINVAL;
5688                 new_triggers.eap_identity_req = true;
5689         }
5690
5691         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5692                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5693                         return -EINVAL;
5694                 new_triggers.four_way_handshake = true;
5695         }
5696
5697         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5698                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5699                         return -EINVAL;
5700                 new_triggers.rfkill_release = true;
5701         }
5702
5703         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5704                 struct nlattr *pat;
5705                 int n_patterns = 0;
5706                 int rem, pat_len, mask_len;
5707                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5708
5709                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5710                                     rem)
5711                         n_patterns++;
5712                 if (n_patterns > wowlan->n_patterns)
5713                         return -EINVAL;
5714
5715                 new_triggers.patterns = kcalloc(n_patterns,
5716                                                 sizeof(new_triggers.patterns[0]),
5717                                                 GFP_KERNEL);
5718                 if (!new_triggers.patterns)
5719                         return -ENOMEM;
5720
5721                 new_triggers.n_patterns = n_patterns;
5722                 i = 0;
5723
5724                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5725                                     rem) {
5726                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5727                                   nla_data(pat), nla_len(pat), NULL);
5728                         err = -EINVAL;
5729                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5730                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5731                                 goto error;
5732                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5733                         mask_len = DIV_ROUND_UP(pat_len, 8);
5734                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5735                             mask_len)
5736                                 goto error;
5737                         if (pat_len > wowlan->pattern_max_len ||
5738                             pat_len < wowlan->pattern_min_len)
5739                                 goto error;
5740
5741                         new_triggers.patterns[i].mask =
5742                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
5743                         if (!new_triggers.patterns[i].mask) {
5744                                 err = -ENOMEM;
5745                                 goto error;
5746                         }
5747                         new_triggers.patterns[i].pattern =
5748                                 new_triggers.patterns[i].mask + mask_len;
5749                         memcpy(new_triggers.patterns[i].mask,
5750                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5751                                mask_len);
5752                         new_triggers.patterns[i].pattern_len = pat_len;
5753                         memcpy(new_triggers.patterns[i].pattern,
5754                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5755                                pat_len);
5756                         i++;
5757                 }
5758         }
5759
5760         if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5761                 struct cfg80211_wowlan *ntrig;
5762                 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5763                                 GFP_KERNEL);
5764                 if (!ntrig) {
5765                         err = -ENOMEM;
5766                         goto error;
5767                 }
5768                 cfg80211_rdev_free_wowlan(rdev);
5769                 rdev->wowlan = ntrig;
5770         } else {
5771  no_triggers:
5772                 cfg80211_rdev_free_wowlan(rdev);
5773                 rdev->wowlan = NULL;
5774         }
5775
5776         return 0;
5777  error:
5778         for (i = 0; i < new_triggers.n_patterns; i++)
5779                 kfree(new_triggers.patterns[i].mask);
5780         kfree(new_triggers.patterns);
5781         return err;
5782 }
5783
5784 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5785 {
5786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5787         struct net_device *dev = info->user_ptr[1];
5788         struct wireless_dev *wdev = dev->ieee80211_ptr;
5789         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5790         struct cfg80211_gtk_rekey_data rekey_data;
5791         int err;
5792
5793         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5794                 return -EINVAL;
5795
5796         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5797                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5798                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5799                         nl80211_rekey_policy);
5800         if (err)
5801                 return err;
5802
5803         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5804                 return -ERANGE;
5805         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5806                 return -ERANGE;
5807         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5808                 return -ERANGE;
5809
5810         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5811                NL80211_KEK_LEN);
5812         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5813                NL80211_KCK_LEN);
5814         memcpy(rekey_data.replay_ctr,
5815                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5816                NL80211_REPLAY_CTR_LEN);
5817
5818         wdev_lock(wdev);
5819         if (!wdev->current_bss) {
5820                 err = -ENOTCONN;
5821                 goto out;
5822         }
5823
5824         if (!rdev->ops->set_rekey_data) {
5825                 err = -EOPNOTSUPP;
5826                 goto out;
5827         }
5828
5829         err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5830  out:
5831         wdev_unlock(wdev);
5832         return err;
5833 }
5834
5835 #define NL80211_FLAG_NEED_WIPHY         0x01
5836 #define NL80211_FLAG_NEED_NETDEV        0x02
5837 #define NL80211_FLAG_NEED_RTNL          0x04
5838 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
5839 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
5840                                          NL80211_FLAG_CHECK_NETDEV_UP)
5841
5842 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5843                             struct genl_info *info)
5844 {
5845         struct cfg80211_registered_device *rdev;
5846         struct net_device *dev;
5847         int err;
5848         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5849
5850         if (rtnl)
5851                 rtnl_lock();
5852
5853         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5854                 rdev = cfg80211_get_dev_from_info(info);
5855                 if (IS_ERR(rdev)) {
5856                         if (rtnl)
5857                                 rtnl_unlock();
5858                         return PTR_ERR(rdev);
5859                 }
5860                 info->user_ptr[0] = rdev;
5861         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5862                 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5863                 if (err) {
5864                         if (rtnl)
5865                                 rtnl_unlock();
5866                         return err;
5867                 }
5868                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5869                     !netif_running(dev)) {
5870                         cfg80211_unlock_rdev(rdev);
5871                         dev_put(dev);
5872                         if (rtnl)
5873                                 rtnl_unlock();
5874                         return -ENETDOWN;
5875                 }
5876                 info->user_ptr[0] = rdev;
5877                 info->user_ptr[1] = dev;
5878         }
5879
5880         return 0;
5881 }
5882
5883 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5884                               struct genl_info *info)
5885 {
5886         if (info->user_ptr[0])
5887                 cfg80211_unlock_rdev(info->user_ptr[0]);
5888         if (info->user_ptr[1])
5889                 dev_put(info->user_ptr[1]);
5890         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5891                 rtnl_unlock();
5892 }
5893
5894 static struct genl_ops nl80211_ops[] = {
5895         {
5896                 .cmd = NL80211_CMD_GET_WIPHY,
5897                 .doit = nl80211_get_wiphy,
5898                 .dumpit = nl80211_dump_wiphy,
5899                 .policy = nl80211_policy,
5900                 /* can be retrieved by unprivileged users */
5901                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5902         },
5903         {
5904                 .cmd = NL80211_CMD_SET_WIPHY,
5905                 .doit = nl80211_set_wiphy,
5906                 .policy = nl80211_policy,
5907                 .flags = GENL_ADMIN_PERM,
5908                 .internal_flags = NL80211_FLAG_NEED_RTNL,
5909         },
5910         {
5911                 .cmd = NL80211_CMD_GET_INTERFACE,
5912                 .doit = nl80211_get_interface,
5913                 .dumpit = nl80211_dump_interface,
5914                 .policy = nl80211_policy,
5915                 /* can be retrieved by unprivileged users */
5916                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5917         },
5918         {
5919                 .cmd = NL80211_CMD_SET_INTERFACE,
5920                 .doit = nl80211_set_interface,
5921                 .policy = nl80211_policy,
5922                 .flags = GENL_ADMIN_PERM,
5923                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5924                                   NL80211_FLAG_NEED_RTNL,
5925         },
5926         {
5927                 .cmd = NL80211_CMD_NEW_INTERFACE,
5928                 .doit = nl80211_new_interface,
5929                 .policy = nl80211_policy,
5930                 .flags = GENL_ADMIN_PERM,
5931                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5932                                   NL80211_FLAG_NEED_RTNL,
5933         },
5934         {
5935                 .cmd = NL80211_CMD_DEL_INTERFACE,
5936                 .doit = nl80211_del_interface,
5937                 .policy = nl80211_policy,
5938                 .flags = GENL_ADMIN_PERM,
5939                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5940                                   NL80211_FLAG_NEED_RTNL,
5941         },
5942         {
5943                 .cmd = NL80211_CMD_GET_KEY,
5944                 .doit = nl80211_get_key,
5945                 .policy = nl80211_policy,
5946                 .flags = GENL_ADMIN_PERM,
5947                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5948                                   NL80211_FLAG_NEED_RTNL,
5949         },
5950         {
5951                 .cmd = NL80211_CMD_SET_KEY,
5952                 .doit = nl80211_set_key,
5953                 .policy = nl80211_policy,
5954                 .flags = GENL_ADMIN_PERM,
5955                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5956                                   NL80211_FLAG_NEED_RTNL,
5957         },
5958         {
5959                 .cmd = NL80211_CMD_NEW_KEY,
5960                 .doit = nl80211_new_key,
5961                 .policy = nl80211_policy,
5962                 .flags = GENL_ADMIN_PERM,
5963                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5964                                   NL80211_FLAG_NEED_RTNL,
5965         },
5966         {
5967                 .cmd = NL80211_CMD_DEL_KEY,
5968                 .doit = nl80211_del_key,
5969                 .policy = nl80211_policy,
5970                 .flags = GENL_ADMIN_PERM,
5971                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5972                                   NL80211_FLAG_NEED_RTNL,
5973         },
5974         {
5975                 .cmd = NL80211_CMD_SET_BEACON,
5976                 .policy = nl80211_policy,
5977                 .flags = GENL_ADMIN_PERM,
5978                 .doit = nl80211_addset_beacon,
5979                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5980                                   NL80211_FLAG_NEED_RTNL,
5981         },
5982         {
5983                 .cmd = NL80211_CMD_NEW_BEACON,
5984                 .policy = nl80211_policy,
5985                 .flags = GENL_ADMIN_PERM,
5986                 .doit = nl80211_addset_beacon,
5987                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5988                                   NL80211_FLAG_NEED_RTNL,
5989         },
5990         {
5991                 .cmd = NL80211_CMD_DEL_BEACON,
5992                 .policy = nl80211_policy,
5993                 .flags = GENL_ADMIN_PERM,
5994                 .doit = nl80211_del_beacon,
5995                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5996                                   NL80211_FLAG_NEED_RTNL,
5997         },
5998         {
5999                 .cmd = NL80211_CMD_GET_STATION,
6000                 .doit = nl80211_get_station,
6001                 .dumpit = nl80211_dump_station,
6002                 .policy = nl80211_policy,
6003                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6004                                   NL80211_FLAG_NEED_RTNL,
6005         },
6006         {
6007                 .cmd = NL80211_CMD_SET_STATION,
6008                 .doit = nl80211_set_station,
6009                 .policy = nl80211_policy,
6010                 .flags = GENL_ADMIN_PERM,
6011                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6012                                   NL80211_FLAG_NEED_RTNL,
6013         },
6014         {
6015                 .cmd = NL80211_CMD_NEW_STATION,
6016                 .doit = nl80211_new_station,
6017                 .policy = nl80211_policy,
6018                 .flags = GENL_ADMIN_PERM,
6019                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6020                                   NL80211_FLAG_NEED_RTNL,
6021         },
6022         {
6023                 .cmd = NL80211_CMD_DEL_STATION,
6024                 .doit = nl80211_del_station,
6025                 .policy = nl80211_policy,
6026                 .flags = GENL_ADMIN_PERM,
6027                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6028                                   NL80211_FLAG_NEED_RTNL,
6029         },
6030         {
6031                 .cmd = NL80211_CMD_GET_MPATH,
6032                 .doit = nl80211_get_mpath,
6033                 .dumpit = nl80211_dump_mpath,
6034                 .policy = nl80211_policy,
6035                 .flags = GENL_ADMIN_PERM,
6036                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6037                                   NL80211_FLAG_NEED_RTNL,
6038         },
6039         {
6040                 .cmd = NL80211_CMD_SET_MPATH,
6041                 .doit = nl80211_set_mpath,
6042                 .policy = nl80211_policy,
6043                 .flags = GENL_ADMIN_PERM,
6044                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6045                                   NL80211_FLAG_NEED_RTNL,
6046         },
6047         {
6048                 .cmd = NL80211_CMD_NEW_MPATH,
6049                 .doit = nl80211_new_mpath,
6050                 .policy = nl80211_policy,
6051                 .flags = GENL_ADMIN_PERM,
6052                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6053                                   NL80211_FLAG_NEED_RTNL,
6054         },
6055         {
6056                 .cmd = NL80211_CMD_DEL_MPATH,
6057                 .doit = nl80211_del_mpath,
6058                 .policy = nl80211_policy,
6059                 .flags = GENL_ADMIN_PERM,
6060                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6061                                   NL80211_FLAG_NEED_RTNL,
6062         },
6063         {
6064                 .cmd = NL80211_CMD_SET_BSS,
6065                 .doit = nl80211_set_bss,
6066                 .policy = nl80211_policy,
6067                 .flags = GENL_ADMIN_PERM,
6068                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6069                                   NL80211_FLAG_NEED_RTNL,
6070         },
6071         {
6072                 .cmd = NL80211_CMD_GET_REG,
6073                 .doit = nl80211_get_reg,
6074                 .policy = nl80211_policy,
6075                 /* can be retrieved by unprivileged users */
6076         },
6077         {
6078                 .cmd = NL80211_CMD_SET_REG,
6079                 .doit = nl80211_set_reg,
6080                 .policy = nl80211_policy,
6081                 .flags = GENL_ADMIN_PERM,
6082         },
6083         {
6084                 .cmd = NL80211_CMD_REQ_SET_REG,
6085                 .doit = nl80211_req_set_reg,
6086                 .policy = nl80211_policy,
6087                 .flags = GENL_ADMIN_PERM,
6088         },
6089         {
6090                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6091                 .doit = nl80211_get_mesh_config,
6092                 .policy = nl80211_policy,
6093                 /* can be retrieved by unprivileged users */
6094                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6095                                   NL80211_FLAG_NEED_RTNL,
6096         },
6097         {
6098                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6099                 .doit = nl80211_update_mesh_config,
6100                 .policy = nl80211_policy,
6101                 .flags = GENL_ADMIN_PERM,
6102                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6103                                   NL80211_FLAG_NEED_RTNL,
6104         },
6105         {
6106                 .cmd = NL80211_CMD_TRIGGER_SCAN,
6107                 .doit = nl80211_trigger_scan,
6108                 .policy = nl80211_policy,
6109                 .flags = GENL_ADMIN_PERM,
6110                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6111                                   NL80211_FLAG_NEED_RTNL,
6112         },
6113         {
6114                 .cmd = NL80211_CMD_GET_SCAN,
6115                 .policy = nl80211_policy,
6116                 .dumpit = nl80211_dump_scan,
6117         },
6118         {
6119                 .cmd = NL80211_CMD_START_SCHED_SCAN,
6120                 .doit = nl80211_start_sched_scan,
6121                 .policy = nl80211_policy,
6122                 .flags = GENL_ADMIN_PERM,
6123                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6124                                   NL80211_FLAG_NEED_RTNL,
6125         },
6126         {
6127                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6128                 .doit = nl80211_stop_sched_scan,
6129                 .policy = nl80211_policy,
6130                 .flags = GENL_ADMIN_PERM,
6131                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6132                                   NL80211_FLAG_NEED_RTNL,
6133         },
6134         {
6135                 .cmd = NL80211_CMD_AUTHENTICATE,
6136                 .doit = nl80211_authenticate,
6137                 .policy = nl80211_policy,
6138                 .flags = GENL_ADMIN_PERM,
6139                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6140                                   NL80211_FLAG_NEED_RTNL,
6141         },
6142         {
6143                 .cmd = NL80211_CMD_ASSOCIATE,
6144                 .doit = nl80211_associate,
6145                 .policy = nl80211_policy,
6146                 .flags = GENL_ADMIN_PERM,
6147                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6148                                   NL80211_FLAG_NEED_RTNL,
6149         },
6150         {
6151                 .cmd = NL80211_CMD_DEAUTHENTICATE,
6152                 .doit = nl80211_deauthenticate,
6153                 .policy = nl80211_policy,
6154                 .flags = GENL_ADMIN_PERM,
6155                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6156                                   NL80211_FLAG_NEED_RTNL,
6157         },
6158         {
6159                 .cmd = NL80211_CMD_DISASSOCIATE,
6160                 .doit = nl80211_disassociate,
6161                 .policy = nl80211_policy,
6162                 .flags = GENL_ADMIN_PERM,
6163                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6164                                   NL80211_FLAG_NEED_RTNL,
6165         },
6166         {
6167                 .cmd = NL80211_CMD_JOIN_IBSS,
6168                 .doit = nl80211_join_ibss,
6169                 .policy = nl80211_policy,
6170                 .flags = GENL_ADMIN_PERM,
6171                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6172                                   NL80211_FLAG_NEED_RTNL,
6173         },
6174         {
6175                 .cmd = NL80211_CMD_LEAVE_IBSS,
6176                 .doit = nl80211_leave_ibss,
6177                 .policy = nl80211_policy,
6178                 .flags = GENL_ADMIN_PERM,
6179                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6180                                   NL80211_FLAG_NEED_RTNL,
6181         },
6182 #ifdef CONFIG_NL80211_TESTMODE
6183         {
6184                 .cmd = NL80211_CMD_TESTMODE,
6185                 .doit = nl80211_testmode_do,
6186                 .dumpit = nl80211_testmode_dump,
6187                 .policy = nl80211_policy,
6188                 .flags = GENL_ADMIN_PERM,
6189                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6190                                   NL80211_FLAG_NEED_RTNL,
6191         },
6192 #endif
6193         {
6194                 .cmd = NL80211_CMD_CONNECT,
6195                 .doit = nl80211_connect,
6196                 .policy = nl80211_policy,
6197                 .flags = GENL_ADMIN_PERM,
6198                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6199                                   NL80211_FLAG_NEED_RTNL,
6200         },
6201         {
6202                 .cmd = NL80211_CMD_DISCONNECT,
6203                 .doit = nl80211_disconnect,
6204                 .policy = nl80211_policy,
6205                 .flags = GENL_ADMIN_PERM,
6206                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6207                                   NL80211_FLAG_NEED_RTNL,
6208         },
6209         {
6210                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6211                 .doit = nl80211_wiphy_netns,
6212                 .policy = nl80211_policy,
6213                 .flags = GENL_ADMIN_PERM,
6214                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6215                                   NL80211_FLAG_NEED_RTNL,
6216         },
6217         {
6218                 .cmd = NL80211_CMD_GET_SURVEY,
6219                 .policy = nl80211_policy,
6220                 .dumpit = nl80211_dump_survey,
6221         },
6222         {
6223                 .cmd = NL80211_CMD_SET_PMKSA,
6224                 .doit = nl80211_setdel_pmksa,
6225                 .policy = nl80211_policy,
6226                 .flags = GENL_ADMIN_PERM,
6227                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6228                                   NL80211_FLAG_NEED_RTNL,
6229         },
6230         {
6231                 .cmd = NL80211_CMD_DEL_PMKSA,
6232                 .doit = nl80211_setdel_pmksa,
6233                 .policy = nl80211_policy,
6234                 .flags = GENL_ADMIN_PERM,
6235                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6236                                   NL80211_FLAG_NEED_RTNL,
6237         },
6238         {
6239                 .cmd = NL80211_CMD_FLUSH_PMKSA,
6240                 .doit = nl80211_flush_pmksa,
6241                 .policy = nl80211_policy,
6242                 .flags = GENL_ADMIN_PERM,
6243                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6244                                   NL80211_FLAG_NEED_RTNL,
6245         },
6246         {
6247                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6248                 .doit = nl80211_remain_on_channel,
6249                 .policy = nl80211_policy,
6250                 .flags = GENL_ADMIN_PERM,
6251                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6252                                   NL80211_FLAG_NEED_RTNL,
6253         },
6254         {
6255                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6256                 .doit = nl80211_cancel_remain_on_channel,
6257                 .policy = nl80211_policy,
6258                 .flags = GENL_ADMIN_PERM,
6259                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6260                                   NL80211_FLAG_NEED_RTNL,
6261         },
6262         {
6263                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6264                 .doit = nl80211_set_tx_bitrate_mask,
6265                 .policy = nl80211_policy,
6266                 .flags = GENL_ADMIN_PERM,
6267                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6268                                   NL80211_FLAG_NEED_RTNL,
6269         },
6270         {
6271                 .cmd = NL80211_CMD_REGISTER_FRAME,
6272                 .doit = nl80211_register_mgmt,
6273                 .policy = nl80211_policy,
6274                 .flags = GENL_ADMIN_PERM,
6275                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6276                                   NL80211_FLAG_NEED_RTNL,
6277         },
6278         {
6279                 .cmd = NL80211_CMD_FRAME,
6280                 .doit = nl80211_tx_mgmt,
6281                 .policy = nl80211_policy,
6282                 .flags = GENL_ADMIN_PERM,
6283                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6284                                   NL80211_FLAG_NEED_RTNL,
6285         },
6286         {
6287                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6288                 .doit = nl80211_tx_mgmt_cancel_wait,
6289                 .policy = nl80211_policy,
6290                 .flags = GENL_ADMIN_PERM,
6291                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6292                                   NL80211_FLAG_NEED_RTNL,
6293         },
6294         {
6295                 .cmd = NL80211_CMD_SET_POWER_SAVE,
6296                 .doit = nl80211_set_power_save,
6297                 .policy = nl80211_policy,
6298                 .flags = GENL_ADMIN_PERM,
6299                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6300                                   NL80211_FLAG_NEED_RTNL,
6301         },
6302         {
6303                 .cmd = NL80211_CMD_GET_POWER_SAVE,
6304                 .doit = nl80211_get_power_save,
6305                 .policy = nl80211_policy,
6306                 /* can be retrieved by unprivileged users */
6307                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6308                                   NL80211_FLAG_NEED_RTNL,
6309         },
6310         {
6311                 .cmd = NL80211_CMD_SET_CQM,
6312                 .doit = nl80211_set_cqm,
6313                 .policy = nl80211_policy,
6314                 .flags = GENL_ADMIN_PERM,
6315                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6316                                   NL80211_FLAG_NEED_RTNL,
6317         },
6318         {
6319                 .cmd = NL80211_CMD_SET_CHANNEL,
6320                 .doit = nl80211_set_channel,
6321                 .policy = nl80211_policy,
6322                 .flags = GENL_ADMIN_PERM,
6323                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6324                                   NL80211_FLAG_NEED_RTNL,
6325         },
6326         {
6327                 .cmd = NL80211_CMD_SET_WDS_PEER,
6328                 .doit = nl80211_set_wds_peer,
6329                 .policy = nl80211_policy,
6330                 .flags = GENL_ADMIN_PERM,
6331                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6332                                   NL80211_FLAG_NEED_RTNL,
6333         },
6334         {
6335                 .cmd = NL80211_CMD_JOIN_MESH,
6336                 .doit = nl80211_join_mesh,
6337                 .policy = nl80211_policy,
6338                 .flags = GENL_ADMIN_PERM,
6339                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6340                                   NL80211_FLAG_NEED_RTNL,
6341         },
6342         {
6343                 .cmd = NL80211_CMD_LEAVE_MESH,
6344                 .doit = nl80211_leave_mesh,
6345                 .policy = nl80211_policy,
6346                 .flags = GENL_ADMIN_PERM,
6347                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6348                                   NL80211_FLAG_NEED_RTNL,
6349         },
6350         {
6351                 .cmd = NL80211_CMD_GET_WOWLAN,
6352                 .doit = nl80211_get_wowlan,
6353                 .policy = nl80211_policy,
6354                 /* can be retrieved by unprivileged users */
6355                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6356                                   NL80211_FLAG_NEED_RTNL,
6357         },
6358         {
6359                 .cmd = NL80211_CMD_SET_WOWLAN,
6360                 .doit = nl80211_set_wowlan,
6361                 .policy = nl80211_policy,
6362                 .flags = GENL_ADMIN_PERM,
6363                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6364                                   NL80211_FLAG_NEED_RTNL,
6365         },
6366         {
6367                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6368                 .doit = nl80211_set_rekey_data,
6369                 .policy = nl80211_policy,
6370                 .flags = GENL_ADMIN_PERM,
6371                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6372                                   NL80211_FLAG_NEED_RTNL,
6373         },
6374         {
6375                 .cmd = NL80211_CMD_TDLS_MGMT,
6376                 .doit = nl80211_tdls_mgmt,
6377                 .policy = nl80211_policy,
6378                 .flags = GENL_ADMIN_PERM,
6379                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6380                                   NL80211_FLAG_NEED_RTNL,
6381         },
6382         {
6383                 .cmd = NL80211_CMD_TDLS_OPER,
6384                 .doit = nl80211_tdls_oper,
6385                 .policy = nl80211_policy,
6386                 .flags = GENL_ADMIN_PERM,
6387                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6388                                   NL80211_FLAG_NEED_RTNL,
6389         },
6390 };
6391
6392 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6393         .name = "mlme",
6394 };
6395
6396 /* multicast groups */
6397 static struct genl_multicast_group nl80211_config_mcgrp = {
6398         .name = "config",
6399 };
6400 static struct genl_multicast_group nl80211_scan_mcgrp = {
6401         .name = "scan",
6402 };
6403 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6404         .name = "regulatory",
6405 };
6406
6407 /* notification functions */
6408
6409 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6410 {
6411         struct sk_buff *msg;
6412
6413         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6414         if (!msg)
6415                 return;
6416
6417         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6418                 nlmsg_free(msg);
6419                 return;
6420         }
6421
6422         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6423                                 nl80211_config_mcgrp.id, GFP_KERNEL);
6424 }
6425
6426 static int nl80211_add_scan_req(struct sk_buff *msg,
6427                                 struct cfg80211_registered_device *rdev)
6428 {
6429         struct cfg80211_scan_request *req = rdev->scan_req;
6430         struct nlattr *nest;
6431         int i;
6432
6433         ASSERT_RDEV_LOCK(rdev);
6434
6435         if (WARN_ON(!req))
6436                 return 0;
6437
6438         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6439         if (!nest)
6440                 goto nla_put_failure;
6441         for (i = 0; i < req->n_ssids; i++)
6442                 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6443         nla_nest_end(msg, nest);
6444
6445         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6446         if (!nest)
6447                 goto nla_put_failure;
6448         for (i = 0; i < req->n_channels; i++)
6449                 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6450         nla_nest_end(msg, nest);
6451
6452         if (req->ie)
6453                 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6454
6455         return 0;
6456  nla_put_failure:
6457         return -ENOBUFS;
6458 }
6459
6460 static int nl80211_send_scan_msg(struct sk_buff *msg,
6461                                  struct cfg80211_registered_device *rdev,
6462                                  struct net_device *netdev,
6463                                  u32 pid, u32 seq, int flags,
6464                                  u32 cmd)
6465 {
6466         void *hdr;
6467
6468         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6469         if (!hdr)
6470                 return -1;
6471
6472         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6473         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6474
6475         /* ignore errors and send incomplete event anyway */
6476         nl80211_add_scan_req(msg, rdev);
6477
6478         return genlmsg_end(msg, hdr);
6479
6480  nla_put_failure:
6481         genlmsg_cancel(msg, hdr);
6482         return -EMSGSIZE;
6483 }
6484
6485 static int
6486 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6487                             struct cfg80211_registered_device *rdev,
6488                             struct net_device *netdev,
6489                             u32 pid, u32 seq, int flags, u32 cmd)
6490 {
6491         void *hdr;
6492
6493         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6494         if (!hdr)
6495                 return -1;
6496
6497         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6498         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6499
6500         return genlmsg_end(msg, hdr);
6501
6502  nla_put_failure:
6503         genlmsg_cancel(msg, hdr);
6504         return -EMSGSIZE;
6505 }
6506
6507 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6508                              struct net_device *netdev)
6509 {
6510         struct sk_buff *msg;
6511
6512         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6513         if (!msg)
6514                 return;
6515
6516         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6517                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
6518                 nlmsg_free(msg);
6519                 return;
6520         }
6521
6522         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6523                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6524 }
6525
6526 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6527                             struct net_device *netdev)
6528 {
6529         struct sk_buff *msg;
6530
6531         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6532         if (!msg)
6533                 return;
6534
6535         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6536                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6537                 nlmsg_free(msg);
6538                 return;
6539         }
6540
6541         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6542                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6543 }
6544
6545 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6546                                struct net_device *netdev)
6547 {
6548         struct sk_buff *msg;
6549
6550         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6551         if (!msg)
6552                 return;
6553
6554         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6555                                   NL80211_CMD_SCAN_ABORTED) < 0) {
6556                 nlmsg_free(msg);
6557                 return;
6558         }
6559
6560         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6561                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6562 }
6563
6564 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6565                                      struct net_device *netdev)
6566 {
6567         struct sk_buff *msg;
6568
6569         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6570         if (!msg)
6571                 return;
6572
6573         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6574                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6575                 nlmsg_free(msg);
6576                 return;
6577         }
6578
6579         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6580                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6581 }
6582
6583 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6584                              struct net_device *netdev, u32 cmd)
6585 {
6586         struct sk_buff *msg;
6587
6588         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6589         if (!msg)
6590                 return;
6591
6592         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6593                 nlmsg_free(msg);
6594                 return;
6595         }
6596
6597         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6598                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6599 }
6600
6601 /*
6602  * This can happen on global regulatory changes or device specific settings
6603  * based on custom world regulatory domains.
6604  */
6605 void nl80211_send_reg_change_event(struct regulatory_request *request)
6606 {
6607         struct sk_buff *msg;
6608         void *hdr;
6609
6610         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6611         if (!msg)
6612                 return;
6613
6614         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6615         if (!hdr) {
6616                 nlmsg_free(msg);
6617                 return;
6618         }
6619
6620         /* Userspace can always count this one always being set */
6621         NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6622
6623         if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6624                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6625                            NL80211_REGDOM_TYPE_WORLD);
6626         else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6627                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6628                            NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6629         else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6630                  request->intersect)
6631                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6632                            NL80211_REGDOM_TYPE_INTERSECTION);
6633         else {
6634                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6635                            NL80211_REGDOM_TYPE_COUNTRY);
6636                 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6637         }
6638
6639         if (wiphy_idx_valid(request->wiphy_idx))
6640                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6641
6642         if (genlmsg_end(msg, hdr) < 0) {
6643                 nlmsg_free(msg);
6644                 return;
6645         }
6646
6647         rcu_read_lock();
6648         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6649                                 GFP_ATOMIC);
6650         rcu_read_unlock();
6651
6652         return;
6653
6654 nla_put_failure:
6655         genlmsg_cancel(msg, hdr);
6656         nlmsg_free(msg);
6657 }
6658
6659 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6660                                     struct net_device *netdev,
6661                                     const u8 *buf, size_t len,
6662                                     enum nl80211_commands cmd, gfp_t gfp)
6663 {
6664         struct sk_buff *msg;
6665         void *hdr;
6666
6667         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6668         if (!msg)
6669                 return;
6670
6671         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6672         if (!hdr) {
6673                 nlmsg_free(msg);
6674                 return;
6675         }
6676
6677         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6678         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6679         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6680
6681         if (genlmsg_end(msg, hdr) < 0) {
6682                 nlmsg_free(msg);
6683                 return;
6684         }
6685
6686         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6687                                 nl80211_mlme_mcgrp.id, gfp);
6688         return;
6689
6690  nla_put_failure:
6691         genlmsg_cancel(msg, hdr);
6692         nlmsg_free(msg);
6693 }
6694
6695 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6696                           struct net_device *netdev, const u8 *buf,
6697                           size_t len, gfp_t gfp)
6698 {
6699         nl80211_send_mlme_event(rdev, netdev, buf, len,
6700                                 NL80211_CMD_AUTHENTICATE, gfp);
6701 }
6702
6703 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6704                            struct net_device *netdev, const u8 *buf,
6705                            size_t len, gfp_t gfp)
6706 {
6707         nl80211_send_mlme_event(rdev, netdev, buf, len,
6708                                 NL80211_CMD_ASSOCIATE, gfp);
6709 }
6710
6711 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6712                          struct net_device *netdev, const u8 *buf,
6713                          size_t len, gfp_t gfp)
6714 {
6715         nl80211_send_mlme_event(rdev, netdev, buf, len,
6716                                 NL80211_CMD_DEAUTHENTICATE, gfp);
6717 }
6718
6719 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6720                            struct net_device *netdev, const u8 *buf,
6721                            size_t len, gfp_t gfp)
6722 {
6723         nl80211_send_mlme_event(rdev, netdev, buf, len,
6724                                 NL80211_CMD_DISASSOCIATE, gfp);
6725 }
6726
6727 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6728                                 struct net_device *netdev, const u8 *buf,
6729                                 size_t len, gfp_t gfp)
6730 {
6731         nl80211_send_mlme_event(rdev, netdev, buf, len,
6732                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6733 }
6734
6735 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6736                                   struct net_device *netdev, const u8 *buf,
6737                                   size_t len, gfp_t gfp)
6738 {
6739         nl80211_send_mlme_event(rdev, netdev, buf, len,
6740                                 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6741 }
6742
6743 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6744                                       struct net_device *netdev, int cmd,
6745                                       const u8 *addr, gfp_t gfp)
6746 {
6747         struct sk_buff *msg;
6748         void *hdr;
6749
6750         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6751         if (!msg)
6752                 return;
6753
6754         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6755         if (!hdr) {
6756                 nlmsg_free(msg);
6757                 return;
6758         }
6759
6760         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6761         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6762         NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6763         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6764
6765         if (genlmsg_end(msg, hdr) < 0) {
6766                 nlmsg_free(msg);
6767                 return;
6768         }
6769
6770         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6771                                 nl80211_mlme_mcgrp.id, gfp);
6772         return;
6773
6774  nla_put_failure:
6775         genlmsg_cancel(msg, hdr);
6776         nlmsg_free(msg);
6777 }
6778
6779 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6780                                struct net_device *netdev, const u8 *addr,
6781                                gfp_t gfp)
6782 {
6783         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6784                                   addr, gfp);
6785 }
6786
6787 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6788                                 struct net_device *netdev, const u8 *addr,
6789                                 gfp_t gfp)
6790 {
6791         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6792                                   addr, gfp);
6793 }
6794
6795 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6796                                  struct net_device *netdev, const u8 *bssid,
6797                                  const u8 *req_ie, size_t req_ie_len,
6798                                  const u8 *resp_ie, size_t resp_ie_len,
6799                                  u16 status, gfp_t gfp)
6800 {
6801         struct sk_buff *msg;
6802         void *hdr;
6803
6804         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6805         if (!msg)
6806                 return;
6807
6808         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6809         if (!hdr) {
6810                 nlmsg_free(msg);
6811                 return;
6812         }
6813
6814         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6815         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6816         if (bssid)
6817                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6818         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6819         if (req_ie)
6820                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6821         if (resp_ie)
6822                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6823
6824         if (genlmsg_end(msg, hdr) < 0) {
6825                 nlmsg_free(msg);
6826                 return;
6827         }
6828
6829         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6830                                 nl80211_mlme_mcgrp.id, gfp);
6831         return;
6832
6833  nla_put_failure:
6834         genlmsg_cancel(msg, hdr);
6835         nlmsg_free(msg);
6836
6837 }
6838
6839 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6840                          struct net_device *netdev, const u8 *bssid,
6841                          const u8 *req_ie, size_t req_ie_len,
6842                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6843 {
6844         struct sk_buff *msg;
6845         void *hdr;
6846
6847         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6848         if (!msg)
6849                 return;
6850
6851         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6852         if (!hdr) {
6853                 nlmsg_free(msg);
6854                 return;
6855         }
6856
6857         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6858         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6859         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6860         if (req_ie)
6861                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6862         if (resp_ie)
6863                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6864
6865         if (genlmsg_end(msg, hdr) < 0) {
6866                 nlmsg_free(msg);
6867                 return;
6868         }
6869
6870         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6871                                 nl80211_mlme_mcgrp.id, gfp);
6872         return;
6873
6874  nla_put_failure:
6875         genlmsg_cancel(msg, hdr);
6876         nlmsg_free(msg);
6877
6878 }
6879
6880 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6881                                struct net_device *netdev, u16 reason,
6882                                const u8 *ie, size_t ie_len, bool from_ap)
6883 {
6884         struct sk_buff *msg;
6885         void *hdr;
6886
6887         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6888         if (!msg)
6889                 return;
6890
6891         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6892         if (!hdr) {
6893                 nlmsg_free(msg);
6894                 return;
6895         }
6896
6897         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6898         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6899         if (from_ap && reason)
6900                 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6901         if (from_ap)
6902                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6903         if (ie)
6904                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6905
6906         if (genlmsg_end(msg, hdr) < 0) {
6907                 nlmsg_free(msg);
6908                 return;
6909         }
6910
6911         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6912                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6913         return;
6914
6915  nla_put_failure:
6916         genlmsg_cancel(msg, hdr);
6917         nlmsg_free(msg);
6918
6919 }
6920
6921 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6922                              struct net_device *netdev, const u8 *bssid,
6923                              gfp_t gfp)
6924 {
6925         struct sk_buff *msg;
6926         void *hdr;
6927
6928         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6929         if (!msg)
6930                 return;
6931
6932         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6933         if (!hdr) {
6934                 nlmsg_free(msg);
6935                 return;
6936         }
6937
6938         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6939         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6940         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6941
6942         if (genlmsg_end(msg, hdr) < 0) {
6943                 nlmsg_free(msg);
6944                 return;
6945         }
6946
6947         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6948                                 nl80211_mlme_mcgrp.id, gfp);
6949         return;
6950
6951  nla_put_failure:
6952         genlmsg_cancel(msg, hdr);
6953         nlmsg_free(msg);
6954 }
6955
6956 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6957                 struct net_device *netdev,
6958                 const u8 *macaddr, const u8* ie, u8 ie_len,
6959                 gfp_t gfp)
6960 {
6961         struct sk_buff *msg;
6962         void *hdr;
6963
6964         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6965         if (!msg)
6966                 return;
6967
6968         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6969         if (!hdr) {
6970                 nlmsg_free(msg);
6971                 return;
6972         }
6973
6974         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6975         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6976         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6977         if (ie_len && ie)
6978                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6979
6980         if (genlmsg_end(msg, hdr) < 0) {
6981                 nlmsg_free(msg);
6982                 return;
6983         }
6984
6985         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6986                                 nl80211_mlme_mcgrp.id, gfp);
6987         return;
6988
6989  nla_put_failure:
6990         genlmsg_cancel(msg, hdr);
6991         nlmsg_free(msg);
6992 }
6993
6994 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6995                                  struct net_device *netdev, const u8 *addr,
6996                                  enum nl80211_key_type key_type, int key_id,
6997                                  const u8 *tsc, gfp_t gfp)
6998 {
6999         struct sk_buff *msg;
7000         void *hdr;
7001
7002         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7003         if (!msg)
7004                 return;
7005
7006         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7007         if (!hdr) {
7008                 nlmsg_free(msg);
7009                 return;
7010         }
7011
7012         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7013         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7014         if (addr)
7015                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7016         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7017         if (key_id != -1)
7018                 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7019         if (tsc)
7020                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7021
7022         if (genlmsg_end(msg, hdr) < 0) {
7023                 nlmsg_free(msg);
7024                 return;
7025         }
7026
7027         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7028                                 nl80211_mlme_mcgrp.id, gfp);
7029         return;
7030
7031  nla_put_failure:
7032         genlmsg_cancel(msg, hdr);
7033         nlmsg_free(msg);
7034 }
7035
7036 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7037                                     struct ieee80211_channel *channel_before,
7038                                     struct ieee80211_channel *channel_after)
7039 {
7040         struct sk_buff *msg;
7041         void *hdr;
7042         struct nlattr *nl_freq;
7043
7044         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7045         if (!msg)
7046                 return;
7047
7048         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7049         if (!hdr) {
7050                 nlmsg_free(msg);
7051                 return;
7052         }
7053
7054         /*
7055          * Since we are applying the beacon hint to a wiphy we know its
7056          * wiphy_idx is valid
7057          */
7058         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7059
7060         /* Before */
7061         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7062         if (!nl_freq)
7063                 goto nla_put_failure;
7064         if (nl80211_msg_put_channel(msg, channel_before))
7065                 goto nla_put_failure;
7066         nla_nest_end(msg, nl_freq);
7067
7068         /* After */
7069         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7070         if (!nl_freq)
7071                 goto nla_put_failure;
7072         if (nl80211_msg_put_channel(msg, channel_after))
7073                 goto nla_put_failure;
7074         nla_nest_end(msg, nl_freq);
7075
7076         if (genlmsg_end(msg, hdr) < 0) {
7077                 nlmsg_free(msg);
7078                 return;
7079         }
7080
7081         rcu_read_lock();
7082         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7083                                 GFP_ATOMIC);
7084         rcu_read_unlock();
7085
7086         return;
7087
7088 nla_put_failure:
7089         genlmsg_cancel(msg, hdr);
7090         nlmsg_free(msg);
7091 }
7092
7093 static void nl80211_send_remain_on_chan_event(
7094         int cmd, struct cfg80211_registered_device *rdev,
7095         struct net_device *netdev, u64 cookie,
7096         struct ieee80211_channel *chan,
7097         enum nl80211_channel_type channel_type,
7098         unsigned int duration, gfp_t gfp)
7099 {
7100         struct sk_buff *msg;
7101         void *hdr;
7102
7103         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7104         if (!msg)
7105                 return;
7106
7107         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7108         if (!hdr) {
7109                 nlmsg_free(msg);
7110                 return;
7111         }
7112
7113         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7114         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7115         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7116         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7117         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7118
7119         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7120                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7121
7122         if (genlmsg_end(msg, hdr) < 0) {
7123                 nlmsg_free(msg);
7124                 return;
7125         }
7126
7127         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7128                                 nl80211_mlme_mcgrp.id, gfp);
7129         return;
7130
7131  nla_put_failure:
7132         genlmsg_cancel(msg, hdr);
7133         nlmsg_free(msg);
7134 }
7135
7136 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7137                                     struct net_device *netdev, u64 cookie,
7138                                     struct ieee80211_channel *chan,
7139                                     enum nl80211_channel_type channel_type,
7140                                     unsigned int duration, gfp_t gfp)
7141 {
7142         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7143                                           rdev, netdev, cookie, chan,
7144                                           channel_type, duration, gfp);
7145 }
7146
7147 void nl80211_send_remain_on_channel_cancel(
7148         struct cfg80211_registered_device *rdev, struct net_device *netdev,
7149         u64 cookie, struct ieee80211_channel *chan,
7150         enum nl80211_channel_type channel_type, gfp_t gfp)
7151 {
7152         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7153                                           rdev, netdev, cookie, chan,
7154                                           channel_type, 0, gfp);
7155 }
7156
7157 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7158                             struct net_device *dev, const u8 *mac_addr,
7159                             struct station_info *sinfo, gfp_t gfp)
7160 {
7161         struct sk_buff *msg;
7162
7163         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7164         if (!msg)
7165                 return;
7166
7167         if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7168                 nlmsg_free(msg);
7169                 return;
7170         }
7171
7172         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7173                                 nl80211_mlme_mcgrp.id, gfp);
7174 }
7175
7176 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7177                                 struct net_device *dev, const u8 *mac_addr,
7178                                 gfp_t gfp)
7179 {
7180         struct sk_buff *msg;
7181         void *hdr;
7182
7183         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7184         if (!msg)
7185                 return;
7186
7187         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7188         if (!hdr) {
7189                 nlmsg_free(msg);
7190                 return;
7191         }
7192
7193         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7194         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7195
7196         if (genlmsg_end(msg, hdr) < 0) {
7197                 nlmsg_free(msg);
7198                 return;
7199         }
7200
7201         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7202                                 nl80211_mlme_mcgrp.id, gfp);
7203         return;
7204
7205  nla_put_failure:
7206         genlmsg_cancel(msg, hdr);
7207         nlmsg_free(msg);
7208 }
7209
7210 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7211                       struct net_device *netdev, u32 nlpid,
7212                       int freq, const u8 *buf, size_t len, gfp_t gfp)
7213 {
7214         struct sk_buff *msg;
7215         void *hdr;
7216         int err;
7217
7218         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7219         if (!msg)
7220                 return -ENOMEM;
7221
7222         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7223         if (!hdr) {
7224                 nlmsg_free(msg);
7225                 return -ENOMEM;
7226         }
7227
7228         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7229         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7230         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7231         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7232
7233         err = genlmsg_end(msg, hdr);
7234         if (err < 0) {
7235                 nlmsg_free(msg);
7236                 return err;
7237         }
7238
7239         err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7240         if (err < 0)
7241                 return err;
7242         return 0;
7243
7244  nla_put_failure:
7245         genlmsg_cancel(msg, hdr);
7246         nlmsg_free(msg);
7247         return -ENOBUFS;
7248 }
7249
7250 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7251                                  struct net_device *netdev, u64 cookie,
7252                                  const u8 *buf, size_t len, bool ack,
7253                                  gfp_t gfp)
7254 {
7255         struct sk_buff *msg;
7256         void *hdr;
7257
7258         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7259         if (!msg)
7260                 return;
7261
7262         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7263         if (!hdr) {
7264                 nlmsg_free(msg);
7265                 return;
7266         }
7267
7268         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7269         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7270         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7271         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7272         if (ack)
7273                 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7274
7275         if (genlmsg_end(msg, hdr) < 0) {
7276                 nlmsg_free(msg);
7277                 return;
7278         }
7279
7280         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7281         return;
7282
7283  nla_put_failure:
7284         genlmsg_cancel(msg, hdr);
7285         nlmsg_free(msg);
7286 }
7287
7288 void
7289 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7290                              struct net_device *netdev,
7291                              enum nl80211_cqm_rssi_threshold_event rssi_event,
7292                              gfp_t gfp)
7293 {
7294         struct sk_buff *msg;
7295         struct nlattr *pinfoattr;
7296         void *hdr;
7297
7298         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7299         if (!msg)
7300                 return;
7301
7302         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7303         if (!hdr) {
7304                 nlmsg_free(msg);
7305                 return;
7306         }
7307
7308         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7309         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7310
7311         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7312         if (!pinfoattr)
7313                 goto nla_put_failure;
7314
7315         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7316                     rssi_event);
7317
7318         nla_nest_end(msg, pinfoattr);
7319
7320         if (genlmsg_end(msg, hdr) < 0) {
7321                 nlmsg_free(msg);
7322                 return;
7323         }
7324
7325         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7326                                 nl80211_mlme_mcgrp.id, gfp);
7327         return;
7328
7329  nla_put_failure:
7330         genlmsg_cancel(msg, hdr);
7331         nlmsg_free(msg);
7332 }
7333
7334 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7335                               struct net_device *netdev, const u8 *bssid,
7336                               const u8 *replay_ctr, gfp_t gfp)
7337 {
7338         struct sk_buff *msg;
7339         struct nlattr *rekey_attr;
7340         void *hdr;
7341
7342         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7343         if (!msg)
7344                 return;
7345
7346         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7347         if (!hdr) {
7348                 nlmsg_free(msg);
7349                 return;
7350         }
7351
7352         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7353         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7354         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7355
7356         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7357         if (!rekey_attr)
7358                 goto nla_put_failure;
7359
7360         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7361                 NL80211_REPLAY_CTR_LEN, replay_ctr);
7362
7363         nla_nest_end(msg, rekey_attr);
7364
7365         if (genlmsg_end(msg, hdr) < 0) {
7366                 nlmsg_free(msg);
7367                 return;
7368         }
7369
7370         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7371                                 nl80211_mlme_mcgrp.id, gfp);
7372         return;
7373
7374  nla_put_failure:
7375         genlmsg_cancel(msg, hdr);
7376         nlmsg_free(msg);
7377 }
7378
7379 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7380                                     struct net_device *netdev, int index,
7381                                     const u8 *bssid, bool preauth, gfp_t gfp)
7382 {
7383         struct sk_buff *msg;
7384         struct nlattr *attr;
7385         void *hdr;
7386
7387         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7388         if (!msg)
7389                 return;
7390
7391         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7392         if (!hdr) {
7393                 nlmsg_free(msg);
7394                 return;
7395         }
7396
7397         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7398         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7399
7400         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7401         if (!attr)
7402                 goto nla_put_failure;
7403
7404         NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7405         NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7406         if (preauth)
7407                 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7408
7409         nla_nest_end(msg, attr);
7410
7411         if (genlmsg_end(msg, hdr) < 0) {
7412                 nlmsg_free(msg);
7413                 return;
7414         }
7415
7416         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7417                                 nl80211_mlme_mcgrp.id, gfp);
7418         return;
7419
7420  nla_put_failure:
7421         genlmsg_cancel(msg, hdr);
7422         nlmsg_free(msg);
7423 }
7424
7425 void
7426 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7427                                 struct net_device *netdev, const u8 *peer,
7428                                 u32 num_packets, gfp_t gfp)
7429 {
7430         struct sk_buff *msg;
7431         struct nlattr *pinfoattr;
7432         void *hdr;
7433
7434         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7435         if (!msg)
7436                 return;
7437
7438         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7439         if (!hdr) {
7440                 nlmsg_free(msg);
7441                 return;
7442         }
7443
7444         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7445         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7446         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7447
7448         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7449         if (!pinfoattr)
7450                 goto nla_put_failure;
7451
7452         NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7453
7454         nla_nest_end(msg, pinfoattr);
7455
7456         if (genlmsg_end(msg, hdr) < 0) {
7457                 nlmsg_free(msg);
7458                 return;
7459         }
7460
7461         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7462                                 nl80211_mlme_mcgrp.id, gfp);
7463         return;
7464
7465  nla_put_failure:
7466         genlmsg_cancel(msg, hdr);
7467         nlmsg_free(msg);
7468 }
7469
7470 static int nl80211_netlink_notify(struct notifier_block * nb,
7471                                   unsigned long state,
7472                                   void *_notify)
7473 {
7474         struct netlink_notify *notify = _notify;
7475         struct cfg80211_registered_device *rdev;
7476         struct wireless_dev *wdev;
7477
7478         if (state != NETLINK_URELEASE)
7479                 return NOTIFY_DONE;
7480
7481         rcu_read_lock();
7482
7483         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7484                 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7485                         cfg80211_mlme_unregister_socket(wdev, notify->pid);
7486
7487         rcu_read_unlock();
7488
7489         return NOTIFY_DONE;
7490 }
7491
7492 static struct notifier_block nl80211_netlink_notifier = {
7493         .notifier_call = nl80211_netlink_notify,
7494 };
7495
7496 /* initialisation/exit functions */
7497
7498 int nl80211_init(void)
7499 {
7500         int err;
7501
7502         err = genl_register_family_with_ops(&nl80211_fam,
7503                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7504         if (err)
7505                 return err;
7506
7507         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7508         if (err)
7509                 goto err_out;
7510
7511         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7512         if (err)
7513                 goto err_out;
7514
7515         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7516         if (err)
7517                 goto err_out;
7518
7519         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7520         if (err)
7521                 goto err_out;
7522
7523 #ifdef CONFIG_NL80211_TESTMODE
7524         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7525         if (err)
7526                 goto err_out;
7527 #endif
7528
7529         err = netlink_register_notifier(&nl80211_netlink_notifier);
7530         if (err)
7531                 goto err_out;
7532
7533         return 0;
7534  err_out:
7535         genl_unregister_family(&nl80211_fam);
7536         return err;
7537 }
7538
7539 void nl80211_exit(void)
7540 {
7541         netlink_unregister_notifier(&nl80211_netlink_notifier);
7542         genl_unregister_family(&nl80211_fam);
7543 }