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                 if (!netif_running(netdev)) {
1262                         result = -ENETDOWN;
1263                         goto bad_res;
1264                 }
1265
1266                 nla_for_each_nested(nl_txq_params,
1267                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1268                                     rem_txq_params) {
1269                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1270                                   nla_data(nl_txq_params),
1271                                   nla_len(nl_txq_params),
1272                                   txq_params_policy);
1273                         result = parse_txq_params(tb, &txq_params);
1274                         if (result)
1275                                 goto bad_res;
1276
1277                         result = rdev->ops->set_txq_params(&rdev->wiphy,
1278                                                            netdev,
1279                                                            &txq_params);
1280                         if (result)
1281                                 goto bad_res;
1282                 }
1283         }
1284
1285         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1286                 result = __nl80211_set_channel(rdev, wdev, info);
1287                 if (result)
1288                         goto bad_res;
1289         }
1290
1291         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1292                 enum nl80211_tx_power_setting type;
1293                 int idx, mbm = 0;
1294
1295                 if (!rdev->ops->set_tx_power) {
1296                         result = -EOPNOTSUPP;
1297                         goto bad_res;
1298                 }
1299
1300                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1301                 type = nla_get_u32(info->attrs[idx]);
1302
1303                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1304                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1305                         result = -EINVAL;
1306                         goto bad_res;
1307                 }
1308
1309                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1310                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1311                         mbm = nla_get_u32(info->attrs[idx]);
1312                 }
1313
1314                 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1315                 if (result)
1316                         goto bad_res;
1317         }
1318
1319         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1320             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1321                 u32 tx_ant, rx_ant;
1322                 if ((!rdev->wiphy.available_antennas_tx &&
1323                      !rdev->wiphy.available_antennas_rx) ||
1324                     !rdev->ops->set_antenna) {
1325                         result = -EOPNOTSUPP;
1326                         goto bad_res;
1327                 }
1328
1329                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1330                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1331
1332                 /* reject antenna configurations which don't match the
1333                  * available antenna masks, except for the "all" mask */
1334                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1335                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1336                         result = -EINVAL;
1337                         goto bad_res;
1338                 }
1339
1340                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1341                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1342
1343                 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1344                 if (result)
1345                         goto bad_res;
1346         }
1347
1348         changed = 0;
1349
1350         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1351                 retry_short = nla_get_u8(
1352                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1353                 if (retry_short == 0) {
1354                         result = -EINVAL;
1355                         goto bad_res;
1356                 }
1357                 changed |= WIPHY_PARAM_RETRY_SHORT;
1358         }
1359
1360         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1361                 retry_long = nla_get_u8(
1362                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1363                 if (retry_long == 0) {
1364                         result = -EINVAL;
1365                         goto bad_res;
1366                 }
1367                 changed |= WIPHY_PARAM_RETRY_LONG;
1368         }
1369
1370         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1371                 frag_threshold = nla_get_u32(
1372                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1373                 if (frag_threshold < 256) {
1374                         result = -EINVAL;
1375                         goto bad_res;
1376                 }
1377                 if (frag_threshold != (u32) -1) {
1378                         /*
1379                          * Fragments (apart from the last one) are required to
1380                          * have even length. Make the fragmentation code
1381                          * simpler by stripping LSB should someone try to use
1382                          * odd threshold value.
1383                          */
1384                         frag_threshold &= ~0x1;
1385                 }
1386                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1387         }
1388
1389         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1390                 rts_threshold = nla_get_u32(
1391                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1392                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1393         }
1394
1395         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1396                 coverage_class = nla_get_u8(
1397                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1398                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1399         }
1400
1401         if (changed) {
1402                 u8 old_retry_short, old_retry_long;
1403                 u32 old_frag_threshold, old_rts_threshold;
1404                 u8 old_coverage_class;
1405
1406                 if (!rdev->ops->set_wiphy_params) {
1407                         result = -EOPNOTSUPP;
1408                         goto bad_res;
1409                 }
1410
1411                 old_retry_short = rdev->wiphy.retry_short;
1412                 old_retry_long = rdev->wiphy.retry_long;
1413                 old_frag_threshold = rdev->wiphy.frag_threshold;
1414                 old_rts_threshold = rdev->wiphy.rts_threshold;
1415                 old_coverage_class = rdev->wiphy.coverage_class;
1416
1417                 if (changed & WIPHY_PARAM_RETRY_SHORT)
1418                         rdev->wiphy.retry_short = retry_short;
1419                 if (changed & WIPHY_PARAM_RETRY_LONG)
1420                         rdev->wiphy.retry_long = retry_long;
1421                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1422                         rdev->wiphy.frag_threshold = frag_threshold;
1423                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1424                         rdev->wiphy.rts_threshold = rts_threshold;
1425                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1426                         rdev->wiphy.coverage_class = coverage_class;
1427
1428                 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1429                 if (result) {
1430                         rdev->wiphy.retry_short = old_retry_short;
1431                         rdev->wiphy.retry_long = old_retry_long;
1432                         rdev->wiphy.frag_threshold = old_frag_threshold;
1433                         rdev->wiphy.rts_threshold = old_rts_threshold;
1434                         rdev->wiphy.coverage_class = old_coverage_class;
1435                 }
1436         }
1437
1438  bad_res:
1439         mutex_unlock(&rdev->mtx);
1440         if (netdev)
1441                 dev_put(netdev);
1442         return result;
1443 }
1444
1445
1446 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1447                               struct cfg80211_registered_device *rdev,
1448                               struct net_device *dev)
1449 {
1450         void *hdr;
1451
1452         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1453         if (!hdr)
1454                 return -1;
1455
1456         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1457         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1458         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1459         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1460
1461         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1462                     rdev->devlist_generation ^
1463                         (cfg80211_rdev_list_generation << 2));
1464
1465         return genlmsg_end(msg, hdr);
1466
1467  nla_put_failure:
1468         genlmsg_cancel(msg, hdr);
1469         return -EMSGSIZE;
1470 }
1471
1472 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1473 {
1474         int wp_idx = 0;
1475         int if_idx = 0;
1476         int wp_start = cb->args[0];
1477         int if_start = cb->args[1];
1478         struct cfg80211_registered_device *rdev;
1479         struct wireless_dev *wdev;
1480
1481         mutex_lock(&cfg80211_mutex);
1482         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1483                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1484                         continue;
1485                 if (wp_idx < wp_start) {
1486                         wp_idx++;
1487                         continue;
1488                 }
1489                 if_idx = 0;
1490
1491                 mutex_lock(&rdev->devlist_mtx);
1492                 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1493                         if (if_idx < if_start) {
1494                                 if_idx++;
1495                                 continue;
1496                         }
1497                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1498                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
1499                                                rdev, wdev->netdev) < 0) {
1500                                 mutex_unlock(&rdev->devlist_mtx);
1501                                 goto out;
1502                         }
1503                         if_idx++;
1504                 }
1505                 mutex_unlock(&rdev->devlist_mtx);
1506
1507                 wp_idx++;
1508         }
1509  out:
1510         mutex_unlock(&cfg80211_mutex);
1511
1512         cb->args[0] = wp_idx;
1513         cb->args[1] = if_idx;
1514
1515         return skb->len;
1516 }
1517
1518 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1519 {
1520         struct sk_buff *msg;
1521         struct cfg80211_registered_device *dev = info->user_ptr[0];
1522         struct net_device *netdev = info->user_ptr[1];
1523
1524         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1525         if (!msg)
1526                 return -ENOMEM;
1527
1528         if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1529                                dev, netdev) < 0) {
1530                 nlmsg_free(msg);
1531                 return -ENOBUFS;
1532         }
1533
1534         return genlmsg_reply(msg, info);
1535 }
1536
1537 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1538         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1539         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1540         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1541         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1542         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1543 };
1544
1545 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1546 {
1547         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1548         int flag;
1549
1550         *mntrflags = 0;
1551
1552         if (!nla)
1553                 return -EINVAL;
1554
1555         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1556                              nla, mntr_flags_policy))
1557                 return -EINVAL;
1558
1559         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1560                 if (flags[flag])
1561                         *mntrflags |= (1<<flag);
1562
1563         return 0;
1564 }
1565
1566 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1567                                struct net_device *netdev, u8 use_4addr,
1568                                enum nl80211_iftype iftype)
1569 {
1570         if (!use_4addr) {
1571                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1572                         return -EBUSY;
1573                 return 0;
1574         }
1575
1576         switch (iftype) {
1577         case NL80211_IFTYPE_AP_VLAN:
1578                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1579                         return 0;
1580                 break;
1581         case NL80211_IFTYPE_STATION:
1582                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1583                         return 0;
1584                 break;
1585         default:
1586                 break;
1587         }
1588
1589         return -EOPNOTSUPP;
1590 }
1591
1592 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1593 {
1594         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1595         struct vif_params params;
1596         int err;
1597         enum nl80211_iftype otype, ntype;
1598         struct net_device *dev = info->user_ptr[1];
1599         u32 _flags, *flags = NULL;
1600         bool change = false;
1601
1602         memset(&params, 0, sizeof(params));
1603
1604         otype = ntype = dev->ieee80211_ptr->iftype;
1605
1606         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1607                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1608                 if (otype != ntype)
1609                         change = true;
1610                 if (ntype > NL80211_IFTYPE_MAX)
1611                         return -EINVAL;
1612         }
1613
1614         if (info->attrs[NL80211_ATTR_MESH_ID]) {
1615                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1616
1617                 if (ntype != NL80211_IFTYPE_MESH_POINT)
1618                         return -EINVAL;
1619                 if (netif_running(dev))
1620                         return -EBUSY;
1621
1622                 wdev_lock(wdev);
1623                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1624                              IEEE80211_MAX_MESH_ID_LEN);
1625                 wdev->mesh_id_up_len =
1626                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1627                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1628                        wdev->mesh_id_up_len);
1629                 wdev_unlock(wdev);
1630         }
1631
1632         if (info->attrs[NL80211_ATTR_4ADDR]) {
1633                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1634                 change = true;
1635                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1636                 if (err)
1637                         return err;
1638         } else {
1639                 params.use_4addr = -1;
1640         }
1641
1642         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1643                 if (ntype != NL80211_IFTYPE_MONITOR)
1644                         return -EINVAL;
1645                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1646                                           &_flags);
1647                 if (err)
1648                         return err;
1649
1650                 flags = &_flags;
1651                 change = true;
1652         }
1653
1654         if (change)
1655                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1656         else
1657                 err = 0;
1658
1659         if (!err && params.use_4addr != -1)
1660                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1661
1662         return err;
1663 }
1664
1665 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1666 {
1667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1668         struct vif_params params;
1669         struct net_device *dev;
1670         int err;
1671         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1672         u32 flags;
1673
1674         memset(&params, 0, sizeof(params));
1675
1676         if (!info->attrs[NL80211_ATTR_IFNAME])
1677                 return -EINVAL;
1678
1679         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1680                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1681                 if (type > NL80211_IFTYPE_MAX)
1682                         return -EINVAL;
1683         }
1684
1685         if (!rdev->ops->add_virtual_intf ||
1686             !(rdev->wiphy.interface_modes & (1 << type)))
1687                 return -EOPNOTSUPP;
1688
1689         if (info->attrs[NL80211_ATTR_4ADDR]) {
1690                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1691                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1692                 if (err)
1693                         return err;
1694         }
1695
1696         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1697                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1698                                   &flags);
1699         dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1700                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1701                 type, err ? NULL : &flags, &params);
1702         if (IS_ERR(dev))
1703                 return PTR_ERR(dev);
1704
1705         if (type == NL80211_IFTYPE_MESH_POINT &&
1706             info->attrs[NL80211_ATTR_MESH_ID]) {
1707                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1708
1709                 wdev_lock(wdev);
1710                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1711                              IEEE80211_MAX_MESH_ID_LEN);
1712                 wdev->mesh_id_up_len =
1713                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1714                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1715                        wdev->mesh_id_up_len);
1716                 wdev_unlock(wdev);
1717         }
1718
1719         return 0;
1720 }
1721
1722 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1723 {
1724         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1725         struct net_device *dev = info->user_ptr[1];
1726
1727         if (!rdev->ops->del_virtual_intf)
1728                 return -EOPNOTSUPP;
1729
1730         return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1731 }
1732
1733 struct get_key_cookie {
1734         struct sk_buff *msg;
1735         int error;
1736         int idx;
1737 };
1738
1739 static void get_key_callback(void *c, struct key_params *params)
1740 {
1741         struct nlattr *key;
1742         struct get_key_cookie *cookie = c;
1743
1744         if (params->key)
1745                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1746                         params->key_len, params->key);
1747
1748         if (params->seq)
1749                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1750                         params->seq_len, params->seq);
1751
1752         if (params->cipher)
1753                 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1754                             params->cipher);
1755
1756         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1757         if (!key)
1758                 goto nla_put_failure;
1759
1760         if (params->key)
1761                 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1762                         params->key_len, params->key);
1763
1764         if (params->seq)
1765                 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1766                         params->seq_len, params->seq);
1767
1768         if (params->cipher)
1769                 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1770                             params->cipher);
1771
1772         NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1773
1774         nla_nest_end(cookie->msg, key);
1775
1776         return;
1777  nla_put_failure:
1778         cookie->error = 1;
1779 }
1780
1781 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1782 {
1783         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1784         int err;
1785         struct net_device *dev = info->user_ptr[1];
1786         u8 key_idx = 0;
1787         const u8 *mac_addr = NULL;
1788         bool pairwise;
1789         struct get_key_cookie cookie = {
1790                 .error = 0,
1791         };
1792         void *hdr;
1793         struct sk_buff *msg;
1794
1795         if (info->attrs[NL80211_ATTR_KEY_IDX])
1796                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1797
1798         if (key_idx > 5)
1799                 return -EINVAL;
1800
1801         if (info->attrs[NL80211_ATTR_MAC])
1802                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1803
1804         pairwise = !!mac_addr;
1805         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1806                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1807                 if (kt >= NUM_NL80211_KEYTYPES)
1808                         return -EINVAL;
1809                 if (kt != NL80211_KEYTYPE_GROUP &&
1810                     kt != NL80211_KEYTYPE_PAIRWISE)
1811                         return -EINVAL;
1812                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1813         }
1814
1815         if (!rdev->ops->get_key)
1816                 return -EOPNOTSUPP;
1817
1818         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1819         if (!msg)
1820                 return -ENOMEM;
1821
1822         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1823                              NL80211_CMD_NEW_KEY);
1824         if (IS_ERR(hdr))
1825                 return PTR_ERR(hdr);
1826
1827         cookie.msg = msg;
1828         cookie.idx = key_idx;
1829
1830         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1831         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1832         if (mac_addr)
1833                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1834
1835         if (pairwise && mac_addr &&
1836             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1837                 return -ENOENT;
1838
1839         err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1840                                  mac_addr, &cookie, get_key_callback);
1841
1842         if (err)
1843                 goto free_msg;
1844
1845         if (cookie.error)
1846                 goto nla_put_failure;
1847
1848         genlmsg_end(msg, hdr);
1849         return genlmsg_reply(msg, info);
1850
1851  nla_put_failure:
1852         err = -ENOBUFS;
1853  free_msg:
1854         nlmsg_free(msg);
1855         return err;
1856 }
1857
1858 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1859 {
1860         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1861         struct key_parse key;
1862         int err;
1863         struct net_device *dev = info->user_ptr[1];
1864
1865         err = nl80211_parse_key(info, &key);
1866         if (err)
1867                 return err;
1868
1869         if (key.idx < 0)
1870                 return -EINVAL;
1871
1872         /* only support setting default key */
1873         if (!key.def && !key.defmgmt)
1874                 return -EINVAL;
1875
1876         wdev_lock(dev->ieee80211_ptr);
1877
1878         if (key.def) {
1879                 if (!rdev->ops->set_default_key) {
1880                         err = -EOPNOTSUPP;
1881                         goto out;
1882                 }
1883
1884                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1885                 if (err)
1886                         goto out;
1887
1888                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1889                                                  key.def_uni, key.def_multi);
1890
1891                 if (err)
1892                         goto out;
1893
1894 #ifdef CONFIG_CFG80211_WEXT
1895                 dev->ieee80211_ptr->wext.default_key = key.idx;
1896 #endif
1897         } else {
1898                 if (key.def_uni || !key.def_multi) {
1899                         err = -EINVAL;
1900                         goto out;
1901                 }
1902
1903                 if (!rdev->ops->set_default_mgmt_key) {
1904                         err = -EOPNOTSUPP;
1905                         goto out;
1906                 }
1907
1908                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1909                 if (err)
1910                         goto out;
1911
1912                 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1913                                                       dev, key.idx);
1914                 if (err)
1915                         goto out;
1916
1917 #ifdef CONFIG_CFG80211_WEXT
1918                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1919 #endif
1920         }
1921
1922  out:
1923         wdev_unlock(dev->ieee80211_ptr);
1924
1925         return err;
1926 }
1927
1928 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1929 {
1930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1931         int err;
1932         struct net_device *dev = info->user_ptr[1];
1933         struct key_parse key;
1934         const u8 *mac_addr = NULL;
1935
1936         err = nl80211_parse_key(info, &key);
1937         if (err)
1938                 return err;
1939
1940         if (!key.p.key)
1941                 return -EINVAL;
1942
1943         if (info->attrs[NL80211_ATTR_MAC])
1944                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1945
1946         if (key.type == -1) {
1947                 if (mac_addr)
1948                         key.type = NL80211_KEYTYPE_PAIRWISE;
1949                 else
1950                         key.type = NL80211_KEYTYPE_GROUP;
1951         }
1952
1953         /* for now */
1954         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1955             key.type != NL80211_KEYTYPE_GROUP)
1956                 return -EINVAL;
1957
1958         if (!rdev->ops->add_key)
1959                 return -EOPNOTSUPP;
1960
1961         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1962                                            key.type == NL80211_KEYTYPE_PAIRWISE,
1963                                            mac_addr))
1964                 return -EINVAL;
1965
1966         wdev_lock(dev->ieee80211_ptr);
1967         err = nl80211_key_allowed(dev->ieee80211_ptr);
1968         if (!err)
1969                 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1970                                          key.type == NL80211_KEYTYPE_PAIRWISE,
1971                                          mac_addr, &key.p);
1972         wdev_unlock(dev->ieee80211_ptr);
1973
1974         return err;
1975 }
1976
1977 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1978 {
1979         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1980         int err;
1981         struct net_device *dev = info->user_ptr[1];
1982         u8 *mac_addr = NULL;
1983         struct key_parse key;
1984
1985         err = nl80211_parse_key(info, &key);
1986         if (err)
1987                 return err;
1988
1989         if (info->attrs[NL80211_ATTR_MAC])
1990                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1991
1992         if (key.type == -1) {
1993                 if (mac_addr)
1994                         key.type = NL80211_KEYTYPE_PAIRWISE;
1995                 else
1996                         key.type = NL80211_KEYTYPE_GROUP;
1997         }
1998
1999         /* for now */
2000         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2001             key.type != NL80211_KEYTYPE_GROUP)
2002                 return -EINVAL;
2003
2004         if (!rdev->ops->del_key)
2005                 return -EOPNOTSUPP;
2006
2007         wdev_lock(dev->ieee80211_ptr);
2008         err = nl80211_key_allowed(dev->ieee80211_ptr);
2009
2010         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2011             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2012                 err = -ENOENT;
2013
2014         if (!err)
2015                 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2016                                          key.type == NL80211_KEYTYPE_PAIRWISE,
2017                                          mac_addr);
2018
2019 #ifdef CONFIG_CFG80211_WEXT
2020         if (!err) {
2021                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2022                         dev->ieee80211_ptr->wext.default_key = -1;
2023                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2024                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2025         }
2026 #endif
2027         wdev_unlock(dev->ieee80211_ptr);
2028
2029         return err;
2030 }
2031
2032 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2033 {
2034         int (*call)(struct wiphy *wiphy, struct net_device *dev,
2035                     struct beacon_parameters *info);
2036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2037         struct net_device *dev = info->user_ptr[1];
2038         struct wireless_dev *wdev = dev->ieee80211_ptr;
2039         struct beacon_parameters params;
2040         int haveinfo = 0, err;
2041
2042         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2043             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2044             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2045             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2046                 return -EINVAL;
2047
2048         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2049             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2050                 return -EOPNOTSUPP;
2051
2052         memset(&params, 0, sizeof(params));
2053
2054         switch (info->genlhdr->cmd) {
2055         case NL80211_CMD_NEW_BEACON:
2056                 /* these are required for NEW_BEACON */
2057                 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2058                     !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2059                     !info->attrs[NL80211_ATTR_BEACON_HEAD])
2060                         return -EINVAL;
2061
2062                 params.interval =
2063                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2064                 params.dtim_period =
2065                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2066
2067                 err = cfg80211_validate_beacon_int(rdev, params.interval);
2068                 if (err)
2069                         return err;
2070
2071                 /*
2072                  * In theory, some of these attributes could be required for
2073                  * NEW_BEACON, but since they were not used when the command was
2074                  * originally added, keep them optional for old user space
2075                  * programs to work with drivers that do not need the additional
2076                  * information.
2077                  */
2078                 if (info->attrs[NL80211_ATTR_SSID]) {
2079                         params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2080                         params.ssid_len =
2081                                 nla_len(info->attrs[NL80211_ATTR_SSID]);
2082                         if (params.ssid_len == 0 ||
2083                             params.ssid_len > IEEE80211_MAX_SSID_LEN)
2084                                 return -EINVAL;
2085                 }
2086
2087                 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2088                         params.hidden_ssid = nla_get_u32(
2089                                 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2090                         if (params.hidden_ssid !=
2091                             NL80211_HIDDEN_SSID_NOT_IN_USE &&
2092                             params.hidden_ssid !=
2093                             NL80211_HIDDEN_SSID_ZERO_LEN &&
2094                             params.hidden_ssid !=
2095                             NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2096                                 return -EINVAL;
2097                 }
2098
2099                 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2100
2101                 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2102                         params.auth_type = nla_get_u32(
2103                                 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2104                         if (!nl80211_valid_auth_type(params.auth_type))
2105                                 return -EINVAL;
2106                 } else
2107                         params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2108
2109                 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2110                                               NL80211_MAX_NR_CIPHER_SUITES);
2111                 if (err)
2112                         return err;
2113
2114                 call = rdev->ops->add_beacon;
2115                 break;
2116         case NL80211_CMD_SET_BEACON:
2117                 call = rdev->ops->set_beacon;
2118                 break;
2119         default:
2120                 WARN_ON(1);
2121                 return -EOPNOTSUPP;
2122         }
2123
2124         if (!call)
2125                 return -EOPNOTSUPP;
2126
2127         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2128                 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2129                 params.head_len =
2130                     nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2131                 haveinfo = 1;
2132         }
2133
2134         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2135                 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2136                 params.tail_len =
2137                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2138                 haveinfo = 1;
2139         }
2140
2141         if (!haveinfo)
2142                 return -EINVAL;
2143
2144         if (info->attrs[NL80211_ATTR_IE]) {
2145                 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2146                 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2147         }
2148
2149         if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2150                 params.proberesp_ies =
2151                         nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2152                 params.proberesp_ies_len =
2153                         nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2154         }
2155
2156         if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2157                 params.assocresp_ies =
2158                         nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2159                 params.assocresp_ies_len =
2160                         nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2161         }
2162
2163         err = call(&rdev->wiphy, dev, &params);
2164         if (!err && params.interval)
2165                 wdev->beacon_interval = params.interval;
2166         return err;
2167 }
2168
2169 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2170 {
2171         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2172         struct net_device *dev = info->user_ptr[1];
2173         struct wireless_dev *wdev = dev->ieee80211_ptr;
2174         int err;
2175
2176         if (!rdev->ops->del_beacon)
2177                 return -EOPNOTSUPP;
2178
2179         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2180             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2181                 return -EOPNOTSUPP;
2182
2183         err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2184         if (!err)
2185                 wdev->beacon_interval = 0;
2186         return err;
2187 }
2188
2189 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2190         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2191         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2192         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2193         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2194         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2195 };
2196
2197 static int parse_station_flags(struct genl_info *info,
2198                                struct station_parameters *params)
2199 {
2200         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2201         struct nlattr *nla;
2202         int flag;
2203
2204         /*
2205          * Try parsing the new attribute first so userspace
2206          * can specify both for older kernels.
2207          */
2208         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2209         if (nla) {
2210                 struct nl80211_sta_flag_update *sta_flags;
2211
2212                 sta_flags = nla_data(nla);
2213                 params->sta_flags_mask = sta_flags->mask;
2214                 params->sta_flags_set = sta_flags->set;
2215                 if ((params->sta_flags_mask |
2216                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2217                         return -EINVAL;
2218                 return 0;
2219         }
2220
2221         /* if present, parse the old attribute */
2222
2223         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2224         if (!nla)
2225                 return 0;
2226
2227         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2228                              nla, sta_flags_policy))
2229                 return -EINVAL;
2230
2231         params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2232         params->sta_flags_mask &= ~1;
2233
2234         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2235                 if (flags[flag])
2236                         params->sta_flags_set |= (1<<flag);
2237
2238         return 0;
2239 }
2240
2241 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2242                                  int attr)
2243 {
2244         struct nlattr *rate;
2245         u16 bitrate;
2246
2247         rate = nla_nest_start(msg, attr);
2248         if (!rate)
2249                 goto nla_put_failure;
2250
2251         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2252         bitrate = cfg80211_calculate_bitrate(info);
2253         if (bitrate > 0)
2254                 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2255
2256         if (info->flags & RATE_INFO_FLAGS_MCS)
2257                 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2258         if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2259                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2260         if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2261                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2262
2263         nla_nest_end(msg, rate);
2264         return true;
2265
2266 nla_put_failure:
2267         return false;
2268 }
2269
2270 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2271                                 int flags, struct net_device *dev,
2272                                 const u8 *mac_addr, struct station_info *sinfo)
2273 {
2274         void *hdr;
2275         struct nlattr *sinfoattr, *bss_param;
2276
2277         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2278         if (!hdr)
2279                 return -1;
2280
2281         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2282         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2283
2284         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2285
2286         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2287         if (!sinfoattr)
2288                 goto nla_put_failure;
2289         if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2290                 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2291                             sinfo->connected_time);
2292         if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2293                 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2294                             sinfo->inactive_time);
2295         if (sinfo->filled & STATION_INFO_RX_BYTES)
2296                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2297                             sinfo->rx_bytes);
2298         if (sinfo->filled & STATION_INFO_TX_BYTES)
2299                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2300                             sinfo->tx_bytes);
2301         if (sinfo->filled & STATION_INFO_LLID)
2302                 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2303                             sinfo->llid);
2304         if (sinfo->filled & STATION_INFO_PLID)
2305                 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2306                             sinfo->plid);
2307         if (sinfo->filled & STATION_INFO_PLINK_STATE)
2308                 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2309                             sinfo->plink_state);
2310         if (sinfo->filled & STATION_INFO_SIGNAL)
2311                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2312                            sinfo->signal);
2313         if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2314                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2315                            sinfo->signal_avg);
2316         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2317                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2318                                           NL80211_STA_INFO_TX_BITRATE))
2319                         goto nla_put_failure;
2320         }
2321         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2322                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2323                                           NL80211_STA_INFO_RX_BITRATE))
2324                         goto nla_put_failure;
2325         }
2326         if (sinfo->filled & STATION_INFO_RX_PACKETS)
2327                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2328                             sinfo->rx_packets);
2329         if (sinfo->filled & STATION_INFO_TX_PACKETS)
2330                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2331                             sinfo->tx_packets);
2332         if (sinfo->filled & STATION_INFO_TX_RETRIES)
2333                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2334                             sinfo->tx_retries);
2335         if (sinfo->filled & STATION_INFO_TX_FAILED)
2336                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2337                             sinfo->tx_failed);
2338         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2339                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2340                 if (!bss_param)
2341                         goto nla_put_failure;
2342
2343                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2344                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2345                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2346                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2347                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2348                         NLA_PUT_FLAG(msg,
2349                                      NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2350                 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2351                            sinfo->bss_param.dtim_period);
2352                 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2353                             sinfo->bss_param.beacon_interval);
2354
2355                 nla_nest_end(msg, bss_param);
2356         }
2357         if (sinfo->filled & STATION_INFO_STA_FLAGS)
2358                 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2359                         sizeof(struct nl80211_sta_flag_update),
2360                         &sinfo->sta_flags);
2361         nla_nest_end(msg, sinfoattr);
2362
2363         if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2364                 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2365                         sinfo->assoc_req_ies);
2366
2367         return genlmsg_end(msg, hdr);
2368
2369  nla_put_failure:
2370         genlmsg_cancel(msg, hdr);
2371         return -EMSGSIZE;
2372 }
2373
2374 static int nl80211_dump_station(struct sk_buff *skb,
2375                                 struct netlink_callback *cb)
2376 {
2377         struct station_info sinfo;
2378         struct cfg80211_registered_device *dev;
2379         struct net_device *netdev;
2380         u8 mac_addr[ETH_ALEN];
2381         int sta_idx = cb->args[1];
2382         int err;
2383
2384         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2385         if (err)
2386                 return err;
2387
2388         if (!dev->ops->dump_station) {
2389                 err = -EOPNOTSUPP;
2390                 goto out_err;
2391         }
2392
2393         while (1) {
2394                 memset(&sinfo, 0, sizeof(sinfo));
2395                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2396                                              mac_addr, &sinfo);
2397                 if (err == -ENOENT)
2398                         break;
2399                 if (err)
2400                         goto out_err;
2401
2402                 if (nl80211_send_station(skb,
2403                                 NETLINK_CB(cb->skb).pid,
2404                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2405                                 netdev, mac_addr,
2406                                 &sinfo) < 0)
2407                         goto out;
2408
2409                 sta_idx++;
2410         }
2411
2412
2413  out:
2414         cb->args[1] = sta_idx;
2415         err = skb->len;
2416  out_err:
2417         nl80211_finish_netdev_dump(dev);
2418
2419         return err;
2420 }
2421
2422 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2423 {
2424         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2425         struct net_device *dev = info->user_ptr[1];
2426         struct station_info sinfo;
2427         struct sk_buff *msg;
2428         u8 *mac_addr = NULL;
2429         int err;
2430
2431         memset(&sinfo, 0, sizeof(sinfo));
2432
2433         if (!info->attrs[NL80211_ATTR_MAC])
2434                 return -EINVAL;
2435
2436         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2437
2438         if (!rdev->ops->get_station)
2439                 return -EOPNOTSUPP;
2440
2441         err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2442         if (err)
2443                 return err;
2444
2445         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2446         if (!msg)
2447                 return -ENOMEM;
2448
2449         if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2450                                  dev, mac_addr, &sinfo) < 0) {
2451                 nlmsg_free(msg);
2452                 return -ENOBUFS;
2453         }
2454
2455         return genlmsg_reply(msg, info);
2456 }
2457
2458 /*
2459  * Get vlan interface making sure it is running and on the right wiphy.
2460  */
2461 static int get_vlan(struct genl_info *info,
2462                     struct cfg80211_registered_device *rdev,
2463                     struct net_device **vlan)
2464 {
2465         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2466         *vlan = NULL;
2467
2468         if (vlanattr) {
2469                 *vlan = dev_get_by_index(genl_info_net(info),
2470                                          nla_get_u32(vlanattr));
2471                 if (!*vlan)
2472                         return -ENODEV;
2473                 if (!(*vlan)->ieee80211_ptr)
2474                         return -EINVAL;
2475                 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2476                         return -EINVAL;
2477                 if (!netif_running(*vlan))
2478                         return -ENETDOWN;
2479         }
2480         return 0;
2481 }
2482
2483 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2484 {
2485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2486         int err;
2487         struct net_device *dev = info->user_ptr[1];
2488         struct station_parameters params;
2489         u8 *mac_addr = NULL;
2490
2491         memset(&params, 0, sizeof(params));
2492
2493         params.listen_interval = -1;
2494         params.plink_state = -1;
2495
2496         if (info->attrs[NL80211_ATTR_STA_AID])
2497                 return -EINVAL;
2498
2499         if (!info->attrs[NL80211_ATTR_MAC])
2500                 return -EINVAL;
2501
2502         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2503
2504         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2505                 params.supported_rates =
2506                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2507                 params.supported_rates_len =
2508                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2509         }
2510
2511         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2512                 params.listen_interval =
2513                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2514
2515         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2516                 params.ht_capa =
2517                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2518
2519         if (parse_station_flags(info, &params))
2520                 return -EINVAL;
2521
2522         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2523                 params.plink_action =
2524                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2525
2526         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2527                 params.plink_state =
2528                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2529
2530         err = get_vlan(info, rdev, &params.vlan);
2531         if (err)
2532                 goto out;
2533
2534         /* validate settings */
2535         err = 0;
2536
2537         switch (dev->ieee80211_ptr->iftype) {
2538         case NL80211_IFTYPE_AP:
2539         case NL80211_IFTYPE_AP_VLAN:
2540         case NL80211_IFTYPE_P2P_GO:
2541                 /* disallow mesh-specific things */
2542                 if (params.plink_action)
2543                         err = -EINVAL;
2544                 break;
2545         case NL80211_IFTYPE_P2P_CLIENT:
2546         case NL80211_IFTYPE_STATION:
2547                 /* disallow things sta doesn't support */
2548                 if (params.plink_action)
2549                         err = -EINVAL;
2550                 if (params.vlan)
2551                         err = -EINVAL;
2552                 if (params.supported_rates &&
2553                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2554                         err = -EINVAL;
2555                 if (params.ht_capa)
2556                         err = -EINVAL;
2557                 if (params.listen_interval >= 0)
2558                         err = -EINVAL;
2559                 if (params.sta_flags_mask &
2560                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2561                                   BIT(NL80211_STA_FLAG_TDLS_PEER)))
2562                         err = -EINVAL;
2563                 /* can't change the TDLS bit */
2564                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2565                     (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2566                         err = -EINVAL;
2567                 break;
2568         case NL80211_IFTYPE_MESH_POINT:
2569                 /* disallow things mesh doesn't support */
2570                 if (params.vlan)
2571                         err = -EINVAL;
2572                 if (params.ht_capa)
2573                         err = -EINVAL;
2574                 if (params.listen_interval >= 0)
2575                         err = -EINVAL;
2576                 if (params.sta_flags_mask &
2577                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2578                                   BIT(NL80211_STA_FLAG_MFP) |
2579                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
2580                         err = -EINVAL;
2581                 break;
2582         default:
2583                 err = -EINVAL;
2584         }
2585
2586         if (err)
2587                 goto out;
2588
2589         if (!rdev->ops->change_station) {
2590                 err = -EOPNOTSUPP;
2591                 goto out;
2592         }
2593
2594         err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2595
2596  out:
2597         if (params.vlan)
2598                 dev_put(params.vlan);
2599
2600         return err;
2601 }
2602
2603 static struct nla_policy
2604 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2605         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2606         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2607 };
2608
2609 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2610 {
2611         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2612         int err;
2613         struct net_device *dev = info->user_ptr[1];
2614         struct station_parameters params;
2615         u8 *mac_addr = NULL;
2616
2617         memset(&params, 0, sizeof(params));
2618
2619         if (!info->attrs[NL80211_ATTR_MAC])
2620                 return -EINVAL;
2621
2622         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2623                 return -EINVAL;
2624
2625         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2626                 return -EINVAL;
2627
2628         if (!info->attrs[NL80211_ATTR_STA_AID])
2629                 return -EINVAL;
2630
2631         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2632         params.supported_rates =
2633                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2634         params.supported_rates_len =
2635                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2636         params.listen_interval =
2637                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2638
2639         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2640         if (!params.aid || params.aid > IEEE80211_MAX_AID)
2641                 return -EINVAL;
2642
2643         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2644                 params.ht_capa =
2645                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2646
2647         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2648                 params.plink_action =
2649                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2650
2651         if (parse_station_flags(info, &params))
2652                 return -EINVAL;
2653
2654         /* parse WME attributes if sta is WME capable */
2655         if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2656             (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2657             info->attrs[NL80211_ATTR_STA_WME]) {
2658                 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2659                 struct nlattr *nla;
2660
2661                 nla = info->attrs[NL80211_ATTR_STA_WME];
2662                 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2663                                        nl80211_sta_wme_policy);
2664                 if (err)
2665                         return err;
2666
2667                 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2668                         params.uapsd_queues =
2669                              nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2670                 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2671                         return -EINVAL;
2672
2673                 if (tb[NL80211_STA_WME_MAX_SP])
2674                         params.max_sp =
2675                              nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2676
2677                 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2678                         return -EINVAL;
2679
2680                 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2681         }
2682
2683         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2684             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2685             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2686             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
2687             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
2688                 return -EINVAL;
2689
2690         /*
2691          * Only managed stations can add TDLS peers, and only when the
2692          * wiphy supports external TDLS setup.
2693          */
2694         if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
2695             !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2696               (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2697               (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
2698                 return -EINVAL;
2699
2700         err = get_vlan(info, rdev, &params.vlan);
2701         if (err)
2702                 goto out;
2703
2704         /* validate settings */
2705         err = 0;
2706
2707         if (!rdev->ops->add_station) {
2708                 err = -EOPNOTSUPP;
2709                 goto out;
2710         }
2711
2712         err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2713
2714  out:
2715         if (params.vlan)
2716                 dev_put(params.vlan);
2717         return err;
2718 }
2719
2720 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2721 {
2722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2723         struct net_device *dev = info->user_ptr[1];
2724         u8 *mac_addr = NULL;
2725
2726         if (info->attrs[NL80211_ATTR_MAC])
2727                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2728
2729         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2730             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2731             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2732             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2733                 return -EINVAL;
2734
2735         if (!rdev->ops->del_station)
2736                 return -EOPNOTSUPP;
2737
2738         return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2739 }
2740
2741 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2742                                 int flags, struct net_device *dev,
2743                                 u8 *dst, u8 *next_hop,
2744                                 struct mpath_info *pinfo)
2745 {
2746         void *hdr;
2747         struct nlattr *pinfoattr;
2748
2749         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2750         if (!hdr)
2751                 return -1;
2752
2753         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2754         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2755         NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2756
2757         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2758
2759         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2760         if (!pinfoattr)
2761                 goto nla_put_failure;
2762         if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2763                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2764                             pinfo->frame_qlen);
2765         if (pinfo->filled & MPATH_INFO_SN)
2766                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2767                             pinfo->sn);
2768         if (pinfo->filled & MPATH_INFO_METRIC)
2769                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2770                             pinfo->metric);
2771         if (pinfo->filled & MPATH_INFO_EXPTIME)
2772                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2773                             pinfo->exptime);
2774         if (pinfo->filled & MPATH_INFO_FLAGS)
2775                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2776                             pinfo->flags);
2777         if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2778                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2779                             pinfo->discovery_timeout);
2780         if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2781                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2782                             pinfo->discovery_retries);
2783
2784         nla_nest_end(msg, pinfoattr);
2785
2786         return genlmsg_end(msg, hdr);
2787
2788  nla_put_failure:
2789         genlmsg_cancel(msg, hdr);
2790         return -EMSGSIZE;
2791 }
2792
2793 static int nl80211_dump_mpath(struct sk_buff *skb,
2794                               struct netlink_callback *cb)
2795 {
2796         struct mpath_info pinfo;
2797         struct cfg80211_registered_device *dev;
2798         struct net_device *netdev;
2799         u8 dst[ETH_ALEN];
2800         u8 next_hop[ETH_ALEN];
2801         int path_idx = cb->args[1];
2802         int err;
2803
2804         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2805         if (err)
2806                 return err;
2807
2808         if (!dev->ops->dump_mpath) {
2809                 err = -EOPNOTSUPP;
2810                 goto out_err;
2811         }
2812
2813         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2814                 err = -EOPNOTSUPP;
2815                 goto out_err;
2816         }
2817
2818         while (1) {
2819                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2820                                            dst, next_hop, &pinfo);
2821                 if (err == -ENOENT)
2822                         break;
2823                 if (err)
2824                         goto out_err;
2825
2826                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2827                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
2828                                        netdev, dst, next_hop,
2829                                        &pinfo) < 0)
2830                         goto out;
2831
2832                 path_idx++;
2833         }
2834
2835
2836  out:
2837         cb->args[1] = path_idx;
2838         err = skb->len;
2839  out_err:
2840         nl80211_finish_netdev_dump(dev);
2841         return err;
2842 }
2843
2844 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2845 {
2846         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2847         int err;
2848         struct net_device *dev = info->user_ptr[1];
2849         struct mpath_info pinfo;
2850         struct sk_buff *msg;
2851         u8 *dst = NULL;
2852         u8 next_hop[ETH_ALEN];
2853
2854         memset(&pinfo, 0, sizeof(pinfo));
2855
2856         if (!info->attrs[NL80211_ATTR_MAC])
2857                 return -EINVAL;
2858
2859         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2860
2861         if (!rdev->ops->get_mpath)
2862                 return -EOPNOTSUPP;
2863
2864         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2865                 return -EOPNOTSUPP;
2866
2867         err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2868         if (err)
2869                 return err;
2870
2871         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2872         if (!msg)
2873                 return -ENOMEM;
2874
2875         if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2876                                  dev, dst, next_hop, &pinfo) < 0) {
2877                 nlmsg_free(msg);
2878                 return -ENOBUFS;
2879         }
2880
2881         return genlmsg_reply(msg, info);
2882 }
2883
2884 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2885 {
2886         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2887         struct net_device *dev = info->user_ptr[1];
2888         u8 *dst = NULL;
2889         u8 *next_hop = NULL;
2890
2891         if (!info->attrs[NL80211_ATTR_MAC])
2892                 return -EINVAL;
2893
2894         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2895                 return -EINVAL;
2896
2897         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2898         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2899
2900         if (!rdev->ops->change_mpath)
2901                 return -EOPNOTSUPP;
2902
2903         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2904                 return -EOPNOTSUPP;
2905
2906         return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2907 }
2908
2909 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2910 {
2911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912         struct net_device *dev = info->user_ptr[1];
2913         u8 *dst = NULL;
2914         u8 *next_hop = NULL;
2915
2916         if (!info->attrs[NL80211_ATTR_MAC])
2917                 return -EINVAL;
2918
2919         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2920                 return -EINVAL;
2921
2922         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2923         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2924
2925         if (!rdev->ops->add_mpath)
2926                 return -EOPNOTSUPP;
2927
2928         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2929                 return -EOPNOTSUPP;
2930
2931         return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2932 }
2933
2934 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2935 {
2936         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2937         struct net_device *dev = info->user_ptr[1];
2938         u8 *dst = NULL;
2939
2940         if (info->attrs[NL80211_ATTR_MAC])
2941                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2942
2943         if (!rdev->ops->del_mpath)
2944                 return -EOPNOTSUPP;
2945
2946         return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2947 }
2948
2949 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2950 {
2951         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2952         struct net_device *dev = info->user_ptr[1];
2953         struct bss_parameters params;
2954
2955         memset(&params, 0, sizeof(params));
2956         /* default to not changing parameters */
2957         params.use_cts_prot = -1;
2958         params.use_short_preamble = -1;
2959         params.use_short_slot_time = -1;
2960         params.ap_isolate = -1;
2961         params.ht_opmode = -1;
2962
2963         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2964                 params.use_cts_prot =
2965                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2966         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2967                 params.use_short_preamble =
2968                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2969         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2970                 params.use_short_slot_time =
2971                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2972         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2973                 params.basic_rates =
2974                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2975                 params.basic_rates_len =
2976                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2977         }
2978         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2979                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2980         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2981                 params.ht_opmode =
2982                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2983
2984         if (!rdev->ops->change_bss)
2985                 return -EOPNOTSUPP;
2986
2987         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2988             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2989                 return -EOPNOTSUPP;
2990
2991         return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2992 }
2993
2994 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2995         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
2996         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
2997         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
2998         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
2999         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
3000         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
3001 };
3002
3003 static int parse_reg_rule(struct nlattr *tb[],
3004         struct ieee80211_reg_rule *reg_rule)
3005 {
3006         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3007         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3008
3009         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3010                 return -EINVAL;
3011         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3012                 return -EINVAL;
3013         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3014                 return -EINVAL;
3015         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3016                 return -EINVAL;
3017         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3018                 return -EINVAL;
3019
3020         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3021
3022         freq_range->start_freq_khz =
3023                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3024         freq_range->end_freq_khz =
3025                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3026         freq_range->max_bandwidth_khz =
3027                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3028
3029         power_rule->max_eirp =
3030                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3031
3032         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3033                 power_rule->max_antenna_gain =
3034                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3035
3036         return 0;
3037 }
3038
3039 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3040 {
3041         int r;
3042         char *data = NULL;
3043
3044         /*
3045          * You should only get this when cfg80211 hasn't yet initialized
3046          * completely when built-in to the kernel right between the time
3047          * window between nl80211_init() and regulatory_init(), if that is
3048          * even possible.
3049          */
3050         mutex_lock(&cfg80211_mutex);
3051         if (unlikely(!cfg80211_regdomain)) {
3052                 mutex_unlock(&cfg80211_mutex);
3053                 return -EINPROGRESS;
3054         }
3055         mutex_unlock(&cfg80211_mutex);
3056
3057         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3058                 return -EINVAL;
3059
3060         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3061
3062         r = regulatory_hint_user(data);
3063
3064         return r;
3065 }
3066
3067 static int nl80211_get_mesh_config(struct sk_buff *skb,
3068                                    struct genl_info *info)
3069 {
3070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3071         struct net_device *dev = info->user_ptr[1];
3072         struct wireless_dev *wdev = dev->ieee80211_ptr;
3073         struct mesh_config cur_params;
3074         int err = 0;
3075         void *hdr;
3076         struct nlattr *pinfoattr;
3077         struct sk_buff *msg;
3078
3079         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3080                 return -EOPNOTSUPP;
3081
3082         if (!rdev->ops->get_mesh_config)
3083                 return -EOPNOTSUPP;
3084
3085         wdev_lock(wdev);
3086         /* If not connected, get default parameters */
3087         if (!wdev->mesh_id_len)
3088                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3089         else
3090                 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3091                                                  &cur_params);
3092         wdev_unlock(wdev);
3093
3094         if (err)
3095                 return err;
3096
3097         /* Draw up a netlink message to send back */
3098         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3099         if (!msg)
3100                 return -ENOMEM;
3101         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3102                              NL80211_CMD_GET_MESH_CONFIG);
3103         if (!hdr)
3104                 goto out;
3105         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3106         if (!pinfoattr)
3107                 goto nla_put_failure;
3108         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3109         NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3110                         cur_params.dot11MeshRetryTimeout);
3111         NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3112                         cur_params.dot11MeshConfirmTimeout);
3113         NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3114                         cur_params.dot11MeshHoldingTimeout);
3115         NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3116                         cur_params.dot11MeshMaxPeerLinks);
3117         NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3118                         cur_params.dot11MeshMaxRetries);
3119         NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3120                         cur_params.dot11MeshTTL);
3121         NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3122                         cur_params.element_ttl);
3123         NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3124                         cur_params.auto_open_plinks);
3125         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3126                         cur_params.dot11MeshHWMPmaxPREQretries);
3127         NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3128                         cur_params.path_refresh_time);
3129         NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3130                         cur_params.min_discovery_timeout);
3131         NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3132                         cur_params.dot11MeshHWMPactivePathTimeout);
3133         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3134                         cur_params.dot11MeshHWMPpreqMinInterval);
3135         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3136                         cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3137         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3138                         cur_params.dot11MeshHWMPRootMode);
3139         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3140                         cur_params.dot11MeshHWMPRannInterval);
3141         NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3142                         cur_params.dot11MeshGateAnnouncementProtocol);
3143         nla_nest_end(msg, pinfoattr);
3144         genlmsg_end(msg, hdr);
3145         return genlmsg_reply(msg, info);
3146
3147  nla_put_failure:
3148         genlmsg_cancel(msg, hdr);
3149  out:
3150         nlmsg_free(msg);
3151         return -ENOBUFS;
3152 }
3153
3154 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3155         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3156         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3157         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3158         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3159         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3160         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3161         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3162         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3163
3164         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3165         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3166         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3167         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3168         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3169         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3170         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3171         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3172         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3173 };
3174
3175 static const struct nla_policy
3176         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3177         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3178         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3179         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3180         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3181                 .len = IEEE80211_MAX_DATA_LEN },
3182         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3183 };
3184
3185 static int nl80211_parse_mesh_config(struct genl_info *info,
3186                                      struct mesh_config *cfg,
3187                                      u32 *mask_out)
3188 {
3189         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3190         u32 mask = 0;
3191
3192 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3193 do {\
3194         if (table[attr_num]) {\
3195                 cfg->param = nla_fn(table[attr_num]); \
3196                 mask |= (1 << (attr_num - 1)); \
3197         } \
3198 } while (0);\
3199
3200
3201         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3202                 return -EINVAL;
3203         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3204                              info->attrs[NL80211_ATTR_MESH_CONFIG],
3205                              nl80211_meshconf_params_policy))
3206                 return -EINVAL;
3207
3208         /* This makes sure that there aren't more than 32 mesh config
3209          * parameters (otherwise our bitfield scheme would not work.) */
3210         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3211
3212         /* Fill in the params struct */
3213         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3214                         mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3216                         mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3217         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3218                         mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3220                         mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3221         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3222                         mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3223         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3224                         mask, NL80211_MESHCONF_TTL, nla_get_u8);
3225         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3226                         mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3227         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3228                         mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3229         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3230                         mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3231                         nla_get_u8);
3232         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3233                         mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3234         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3235                         mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3236                         nla_get_u16);
3237         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3238                         mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3239                         nla_get_u32);
3240         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3241                         mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3242                         nla_get_u16);
3243         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3244                         dot11MeshHWMPnetDiameterTraversalTime,
3245                         mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3246                         nla_get_u16);
3247         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3248                         dot11MeshHWMPRootMode, mask,
3249                         NL80211_MESHCONF_HWMP_ROOTMODE,
3250                         nla_get_u8);
3251         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3252                         dot11MeshHWMPRannInterval, mask,
3253                         NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3254                         nla_get_u16);
3255         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3256                         dot11MeshGateAnnouncementProtocol, mask,
3257                         NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3258                         nla_get_u8);
3259         if (mask_out)
3260                 *mask_out = mask;
3261
3262         return 0;
3263
3264 #undef FILL_IN_MESH_PARAM_IF_SET
3265 }
3266
3267 static int nl80211_parse_mesh_setup(struct genl_info *info,
3268                                      struct mesh_setup *setup)
3269 {
3270         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3271
3272         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3273                 return -EINVAL;
3274         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3275                              info->attrs[NL80211_ATTR_MESH_SETUP],
3276                              nl80211_mesh_setup_params_policy))
3277                 return -EINVAL;
3278
3279         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3280                 setup->path_sel_proto =
3281                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3282                  IEEE80211_PATH_PROTOCOL_VENDOR :
3283                  IEEE80211_PATH_PROTOCOL_HWMP;
3284
3285         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3286                 setup->path_metric =
3287                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3288                  IEEE80211_PATH_METRIC_VENDOR :
3289                  IEEE80211_PATH_METRIC_AIRTIME;
3290
3291
3292         if (tb[NL80211_MESH_SETUP_IE]) {
3293                 struct nlattr *ieattr =
3294                         tb[NL80211_MESH_SETUP_IE];
3295                 if (!is_valid_ie_attr(ieattr))
3296                         return -EINVAL;
3297                 setup->ie = nla_data(ieattr);
3298                 setup->ie_len = nla_len(ieattr);
3299         }
3300         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3301         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3302
3303         return 0;
3304 }
3305
3306 static int nl80211_update_mesh_config(struct sk_buff *skb,
3307                                       struct genl_info *info)
3308 {
3309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3310         struct net_device *dev = info->user_ptr[1];
3311         struct wireless_dev *wdev = dev->ieee80211_ptr;
3312         struct mesh_config cfg;
3313         u32 mask;
3314         int err;
3315
3316         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3317                 return -EOPNOTSUPP;
3318
3319         if (!rdev->ops->update_mesh_config)
3320                 return -EOPNOTSUPP;
3321
3322         err = nl80211_parse_mesh_config(info, &cfg, &mask);
3323         if (err)
3324                 return err;
3325
3326         wdev_lock(wdev);
3327         if (!wdev->mesh_id_len)
3328                 err = -ENOLINK;
3329
3330         if (!err)
3331                 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3332                                                     mask, &cfg);
3333
3334         wdev_unlock(wdev);
3335
3336         return err;
3337 }
3338
3339 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3340 {
3341         struct sk_buff *msg;
3342         void *hdr = NULL;
3343         struct nlattr *nl_reg_rules;
3344         unsigned int i;
3345         int err = -EINVAL;
3346
3347         mutex_lock(&cfg80211_mutex);
3348
3349         if (!cfg80211_regdomain)
3350                 goto out;
3351
3352         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3353         if (!msg) {
3354                 err = -ENOBUFS;
3355                 goto out;
3356         }
3357
3358         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3359                              NL80211_CMD_GET_REG);
3360         if (!hdr)
3361                 goto put_failure;
3362
3363         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3364                 cfg80211_regdomain->alpha2);
3365
3366         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3367         if (!nl_reg_rules)
3368                 goto nla_put_failure;
3369
3370         for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3371                 struct nlattr *nl_reg_rule;
3372                 const struct ieee80211_reg_rule *reg_rule;
3373                 const struct ieee80211_freq_range *freq_range;
3374                 const struct ieee80211_power_rule *power_rule;
3375
3376                 reg_rule = &cfg80211_regdomain->reg_rules[i];
3377                 freq_range = &reg_rule->freq_range;
3378                 power_rule = &reg_rule->power_rule;
3379
3380                 nl_reg_rule = nla_nest_start(msg, i);
3381                 if (!nl_reg_rule)
3382                         goto nla_put_failure;
3383
3384                 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3385                         reg_rule->flags);
3386                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3387                         freq_range->start_freq_khz);
3388                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3389                         freq_range->end_freq_khz);
3390                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3391                         freq_range->max_bandwidth_khz);
3392                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3393                         power_rule->max_antenna_gain);
3394                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3395                         power_rule->max_eirp);
3396
3397                 nla_nest_end(msg, nl_reg_rule);
3398         }
3399
3400         nla_nest_end(msg, nl_reg_rules);
3401
3402         genlmsg_end(msg, hdr);
3403         err = genlmsg_reply(msg, info);
3404         goto out;
3405
3406 nla_put_failure:
3407         genlmsg_cancel(msg, hdr);
3408 put_failure:
3409         nlmsg_free(msg);
3410         err = -EMSGSIZE;
3411 out:
3412         mutex_unlock(&cfg80211_mutex);
3413         return err;
3414 }
3415
3416 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3417 {
3418         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3419         struct nlattr *nl_reg_rule;
3420         char *alpha2 = NULL;
3421         int rem_reg_rules = 0, r = 0;
3422         u32 num_rules = 0, rule_idx = 0, size_of_regd;
3423         struct ieee80211_regdomain *rd = NULL;
3424
3425         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3426                 return -EINVAL;
3427
3428         if (!info->attrs[NL80211_ATTR_REG_RULES])
3429                 return -EINVAL;
3430
3431         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3432
3433         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3434                         rem_reg_rules) {
3435                 num_rules++;
3436                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3437                         return -EINVAL;
3438         }
3439
3440         mutex_lock(&cfg80211_mutex);
3441
3442         if (!reg_is_valid_request(alpha2)) {
3443                 r = -EINVAL;
3444                 goto bad_reg;
3445         }
3446
3447         size_of_regd = sizeof(struct ieee80211_regdomain) +
3448                 (num_rules * sizeof(struct ieee80211_reg_rule));
3449
3450         rd = kzalloc(size_of_regd, GFP_KERNEL);
3451         if (!rd) {
3452                 r = -ENOMEM;
3453                 goto bad_reg;
3454         }
3455
3456         rd->n_reg_rules = num_rules;
3457         rd->alpha2[0] = alpha2[0];
3458         rd->alpha2[1] = alpha2[1];
3459
3460         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3461                         rem_reg_rules) {
3462                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3463                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3464                         reg_rule_policy);
3465                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3466                 if (r)
3467                         goto bad_reg;
3468
3469                 rule_idx++;
3470
3471                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3472                         r = -EINVAL;
3473                         goto bad_reg;
3474                 }
3475         }
3476
3477         BUG_ON(rule_idx != num_rules);
3478
3479         r = set_regdom(rd);
3480
3481         mutex_unlock(&cfg80211_mutex);
3482
3483         return r;
3484
3485  bad_reg:
3486         mutex_unlock(&cfg80211_mutex);
3487         kfree(rd);
3488         return r;
3489 }
3490
3491 static int validate_scan_freqs(struct nlattr *freqs)
3492 {
3493         struct nlattr *attr1, *attr2;
3494         int n_channels = 0, tmp1, tmp2;
3495
3496         nla_for_each_nested(attr1, freqs, tmp1) {
3497                 n_channels++;
3498                 /*
3499                  * Some hardware has a limited channel list for
3500                  * scanning, and it is pretty much nonsensical
3501                  * to scan for a channel twice, so disallow that
3502                  * and don't require drivers to check that the
3503                  * channel list they get isn't longer than what
3504                  * they can scan, as long as they can scan all
3505                  * the channels they registered at once.
3506                  */
3507                 nla_for_each_nested(attr2, freqs, tmp2)
3508                         if (attr1 != attr2 &&
3509                             nla_get_u32(attr1) == nla_get_u32(attr2))
3510                                 return 0;
3511         }
3512
3513         return n_channels;
3514 }
3515
3516 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3517 {
3518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3519         struct net_device *dev = info->user_ptr[1];
3520         struct cfg80211_scan_request *request;
3521         struct nlattr *attr;
3522         struct wiphy *wiphy;
3523         int err, tmp, n_ssids = 0, n_channels, i;
3524         size_t ie_len;
3525
3526         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3527                 return -EINVAL;
3528
3529         wiphy = &rdev->wiphy;
3530
3531         if (!rdev->ops->scan)
3532                 return -EOPNOTSUPP;
3533
3534         if (rdev->scan_req)
3535                 return -EBUSY;
3536
3537         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3538                 n_channels = validate_scan_freqs(
3539                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3540                 if (!n_channels)
3541                         return -EINVAL;
3542         } else {
3543                 enum ieee80211_band band;
3544                 n_channels = 0;
3545
3546                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3547                         if (wiphy->bands[band])
3548                                 n_channels += wiphy->bands[band]->n_channels;
3549         }
3550
3551         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3552                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3553                         n_ssids++;
3554
3555         if (n_ssids > wiphy->max_scan_ssids)
3556                 return -EINVAL;
3557
3558         if (info->attrs[NL80211_ATTR_IE])
3559                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3560         else
3561                 ie_len = 0;
3562
3563         if (ie_len > wiphy->max_scan_ie_len)
3564                 return -EINVAL;
3565
3566         request = kzalloc(sizeof(*request)
3567                         + sizeof(*request->ssids) * n_ssids
3568                         + sizeof(*request->channels) * n_channels
3569                         + ie_len, GFP_KERNEL);
3570         if (!request)
3571                 return -ENOMEM;
3572
3573         if (n_ssids)
3574                 request->ssids = (void *)&request->channels[n_channels];
3575         request->n_ssids = n_ssids;
3576         if (ie_len) {
3577                 if (request->ssids)
3578                         request->ie = (void *)(request->ssids + n_ssids);
3579                 else
3580                         request->ie = (void *)(request->channels + n_channels);
3581         }
3582
3583         i = 0;
3584         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3585                 /* user specified, bail out if channel not found */
3586                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3587                         struct ieee80211_channel *chan;
3588
3589                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3590
3591                         if (!chan) {
3592                                 err = -EINVAL;
3593                                 goto out_free;
3594                         }
3595
3596                         /* ignore disabled channels */
3597                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3598                                 continue;
3599
3600                         request->channels[i] = chan;
3601                         i++;
3602                 }
3603         } else {
3604                 enum ieee80211_band band;
3605
3606                 /* all channels */
3607                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3608                         int j;
3609                         if (!wiphy->bands[band])
3610                                 continue;
3611                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3612                                 struct ieee80211_channel *chan;
3613
3614                                 chan = &wiphy->bands[band]->channels[j];
3615
3616                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3617                                         continue;
3618
3619                                 request->channels[i] = chan;
3620                                 i++;
3621                         }
3622                 }
3623         }
3624
3625         if (!i) {
3626                 err = -EINVAL;
3627                 goto out_free;
3628         }
3629
3630         request->n_channels = i;
3631
3632         i = 0;
3633         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3634                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3635                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3636                                 err = -EINVAL;
3637                                 goto out_free;
3638                         }
3639                         request->ssids[i].ssid_len = nla_len(attr);
3640                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3641                         i++;
3642                 }
3643         }
3644
3645         if (info->attrs[NL80211_ATTR_IE]) {
3646                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3647                 memcpy((void *)request->ie,
3648                        nla_data(info->attrs[NL80211_ATTR_IE]),
3649                        request->ie_len);
3650         }
3651
3652         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3653                 if (wiphy->bands[i])
3654                         request->rates[i] =
3655                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
3656
3657         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3658                 nla_for_each_nested(attr,
3659                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3660                                     tmp) {
3661                         enum ieee80211_band band = nla_type(attr);
3662
3663                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3664                                 err = -EINVAL;
3665                                 goto out_free;
3666                         }
3667                         err = ieee80211_get_ratemask(wiphy->bands[band],
3668                                                      nla_data(attr),
3669                                                      nla_len(attr),
3670                                                      &request->rates[band]);
3671                         if (err)
3672                                 goto out_free;
3673                 }
3674         }
3675
3676         request->no_cck =
3677                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3678
3679         request->dev = dev;
3680         request->wiphy = &rdev->wiphy;
3681
3682         rdev->scan_req = request;
3683         err = rdev->ops->scan(&rdev->wiphy, dev, request);
3684
3685         if (!err) {
3686                 nl80211_send_scan_start(rdev, dev);
3687                 dev_hold(dev);
3688         } else {
3689  out_free:
3690                 rdev->scan_req = NULL;
3691                 kfree(request);
3692         }
3693
3694         return err;
3695 }
3696
3697 static int nl80211_start_sched_scan(struct sk_buff *skb,
3698                                     struct genl_info *info)
3699 {
3700         struct cfg80211_sched_scan_request *request;
3701         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3702         struct net_device *dev = info->user_ptr[1];
3703         struct nlattr *attr;
3704         struct wiphy *wiphy;
3705         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3706         u32 interval;
3707         enum ieee80211_band band;
3708         size_t ie_len;
3709         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3710
3711         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3712             !rdev->ops->sched_scan_start)
3713                 return -EOPNOTSUPP;
3714
3715         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3716                 return -EINVAL;
3717
3718         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3719                 return -EINVAL;
3720
3721         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3722         if (interval == 0)
3723                 return -EINVAL;
3724
3725         wiphy = &rdev->wiphy;
3726
3727         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3728                 n_channels = validate_scan_freqs(
3729                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3730                 if (!n_channels)
3731                         return -EINVAL;
3732         } else {
3733                 n_channels = 0;
3734
3735                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3736                         if (wiphy->bands[band])
3737                                 n_channels += wiphy->bands[band]->n_channels;
3738         }
3739
3740         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3741                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3742                                     tmp)
3743                         n_ssids++;
3744
3745         if (n_ssids > wiphy->max_sched_scan_ssids)
3746                 return -EINVAL;
3747
3748         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3749                 nla_for_each_nested(attr,
3750                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3751                                     tmp)
3752                         n_match_sets++;
3753
3754         if (n_match_sets > wiphy->max_match_sets)
3755                 return -EINVAL;
3756
3757         if (info->attrs[NL80211_ATTR_IE])
3758                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3759         else
3760                 ie_len = 0;
3761
3762         if (ie_len > wiphy->max_sched_scan_ie_len)
3763                 return -EINVAL;
3764
3765         mutex_lock(&rdev->sched_scan_mtx);
3766
3767         if (rdev->sched_scan_req) {
3768                 err = -EINPROGRESS;
3769                 goto out;
3770         }
3771
3772         request = kzalloc(sizeof(*request)
3773                         + sizeof(*request->ssids) * n_ssids
3774                         + sizeof(*request->match_sets) * n_match_sets
3775                         + sizeof(*request->channels) * n_channels
3776                         + ie_len, GFP_KERNEL);
3777         if (!request) {
3778                 err = -ENOMEM;
3779                 goto out;
3780         }
3781
3782         if (n_ssids)
3783                 request->ssids = (void *)&request->channels[n_channels];
3784         request->n_ssids = n_ssids;
3785         if (ie_len) {
3786                 if (request->ssids)
3787                         request->ie = (void *)(request->ssids + n_ssids);
3788                 else
3789                         request->ie = (void *)(request->channels + n_channels);
3790         }
3791
3792         if (n_match_sets) {
3793                 if (request->ie)
3794                         request->match_sets = (void *)(request->ie + ie_len);
3795                 else if (request->ssids)
3796                         request->match_sets =
3797                                 (void *)(request->ssids + n_ssids);
3798                 else
3799                         request->match_sets =
3800                                 (void *)(request->channels + n_channels);
3801         }
3802         request->n_match_sets = n_match_sets;
3803
3804         i = 0;
3805         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3806                 /* user specified, bail out if channel not found */
3807                 nla_for_each_nested(attr,
3808                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3809                                     tmp) {
3810                         struct ieee80211_channel *chan;
3811
3812                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3813
3814                         if (!chan) {
3815                                 err = -EINVAL;
3816                                 goto out_free;
3817                         }
3818
3819                         /* ignore disabled channels */
3820                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3821                                 continue;
3822
3823                         request->channels[i] = chan;
3824                         i++;
3825                 }
3826         } else {
3827                 /* all channels */
3828                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3829                         int j;
3830                         if (!wiphy->bands[band])
3831                                 continue;
3832                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3833                                 struct ieee80211_channel *chan;
3834
3835                                 chan = &wiphy->bands[band]->channels[j];
3836
3837                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3838                                         continue;
3839
3840                                 request->channels[i] = chan;
3841                                 i++;
3842                         }
3843                 }
3844         }
3845
3846         if (!i) {
3847                 err = -EINVAL;
3848                 goto out_free;
3849         }
3850
3851         request->n_channels = i;
3852
3853         i = 0;
3854         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3855                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3856                                     tmp) {
3857                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3858                                 err = -EINVAL;
3859                                 goto out_free;
3860                         }
3861                         request->ssids[i].ssid_len = nla_len(attr);
3862                         memcpy(request->ssids[i].ssid, nla_data(attr),
3863                                nla_len(attr));
3864                         i++;
3865                 }
3866         }
3867
3868         i = 0;
3869         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3870                 nla_for_each_nested(attr,
3871                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3872                                     tmp) {
3873                         struct nlattr *ssid;
3874
3875                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3876                                   nla_data(attr), nla_len(attr),
3877                                   nl80211_match_policy);
3878                         ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3879                         if (ssid) {
3880                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3881                                         err = -EINVAL;
3882                                         goto out_free;
3883                                 }
3884                                 memcpy(request->match_sets[i].ssid.ssid,
3885                                        nla_data(ssid), nla_len(ssid));
3886                                 request->match_sets[i].ssid.ssid_len =
3887                                         nla_len(ssid);
3888                         }
3889                         i++;
3890                 }
3891         }
3892
3893         if (info->attrs[NL80211_ATTR_IE]) {
3894                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3895                 memcpy((void *)request->ie,
3896                        nla_data(info->attrs[NL80211_ATTR_IE]),
3897                        request->ie_len);
3898         }
3899
3900         request->dev = dev;
3901         request->wiphy = &rdev->wiphy;
3902         request->interval = interval;
3903
3904         err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3905         if (!err) {
3906                 rdev->sched_scan_req = request;
3907                 nl80211_send_sched_scan(rdev, dev,
3908                                         NL80211_CMD_START_SCHED_SCAN);
3909                 goto out;
3910         }
3911
3912 out_free:
3913         kfree(request);
3914 out:
3915         mutex_unlock(&rdev->sched_scan_mtx);
3916         return err;
3917 }
3918
3919 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3920                                    struct genl_info *info)
3921 {
3922         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3923         int err;
3924
3925         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3926             !rdev->ops->sched_scan_stop)
3927                 return -EOPNOTSUPP;
3928
3929         mutex_lock(&rdev->sched_scan_mtx);
3930         err = __cfg80211_stop_sched_scan(rdev, false);
3931         mutex_unlock(&rdev->sched_scan_mtx);
3932
3933         return err;
3934 }
3935
3936 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3937                             u32 seq, int flags,
3938                             struct cfg80211_registered_device *rdev,
3939                             struct wireless_dev *wdev,
3940                             struct cfg80211_internal_bss *intbss)
3941 {
3942         struct cfg80211_bss *res = &intbss->pub;
3943         void *hdr;
3944         struct nlattr *bss;
3945         int i;
3946
3947         ASSERT_WDEV_LOCK(wdev);
3948
3949         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3950                              NL80211_CMD_NEW_SCAN_RESULTS);
3951         if (!hdr)
3952                 return -1;
3953
3954         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3955
3956         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3957         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3958
3959         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3960         if (!bss)
3961                 goto nla_put_failure;
3962         if (!is_zero_ether_addr(res->bssid))
3963                 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3964         if (res->information_elements && res->len_information_elements)
3965                 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3966                         res->len_information_elements,
3967                         res->information_elements);
3968         if (res->beacon_ies && res->len_beacon_ies &&
3969             res->beacon_ies != res->information_elements)
3970                 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3971                         res->len_beacon_ies, res->beacon_ies);
3972         if (res->tsf)
3973                 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3974         if (res->beacon_interval)
3975                 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3976         NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3977         NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3978         NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3979                 jiffies_to_msecs(jiffies - intbss->ts));
3980
3981         switch (rdev->wiphy.signal_type) {
3982         case CFG80211_SIGNAL_TYPE_MBM:
3983                 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3984                 break;
3985         case CFG80211_SIGNAL_TYPE_UNSPEC:
3986                 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3987                 break;
3988         default:
3989                 break;
3990         }
3991
3992         switch (wdev->iftype) {
3993         case NL80211_IFTYPE_P2P_CLIENT:
3994         case NL80211_IFTYPE_STATION:
3995                 if (intbss == wdev->current_bss)
3996                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3997                                     NL80211_BSS_STATUS_ASSOCIATED);
3998                 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3999                         if (intbss != wdev->auth_bsses[i])
4000                                 continue;
4001                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4002                                     NL80211_BSS_STATUS_AUTHENTICATED);
4003                         break;
4004                 }
4005                 break;
4006         case NL80211_IFTYPE_ADHOC:
4007                 if (intbss == wdev->current_bss)
4008                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4009                                     NL80211_BSS_STATUS_IBSS_JOINED);
4010                 break;
4011         default:
4012                 break;
4013         }
4014
4015         nla_nest_end(msg, bss);
4016
4017         return genlmsg_end(msg, hdr);
4018
4019  nla_put_failure:
4020         genlmsg_cancel(msg, hdr);
4021         return -EMSGSIZE;
4022 }
4023
4024 static int nl80211_dump_scan(struct sk_buff *skb,
4025                              struct netlink_callback *cb)
4026 {
4027         struct cfg80211_registered_device *rdev;
4028         struct net_device *dev;
4029         struct cfg80211_internal_bss *scan;
4030         struct wireless_dev *wdev;
4031         int start = cb->args[1], idx = 0;
4032         int err;
4033
4034         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4035         if (err)
4036                 return err;
4037
4038         wdev = dev->ieee80211_ptr;
4039
4040         wdev_lock(wdev);
4041         spin_lock_bh(&rdev->bss_lock);
4042         cfg80211_bss_expire(rdev);
4043
4044         cb->seq = rdev->bss_generation;
4045
4046         list_for_each_entry(scan, &rdev->bss_list, list) {
4047                 if (++idx <= start)
4048                         continue;
4049                 if (nl80211_send_bss(skb, cb,
4050                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4051                                 rdev, wdev, scan) < 0) {
4052                         idx--;
4053                         break;
4054                 }
4055         }
4056
4057         spin_unlock_bh(&rdev->bss_lock);
4058         wdev_unlock(wdev);
4059
4060         cb->args[1] = idx;
4061         nl80211_finish_netdev_dump(rdev);
4062
4063         return skb->len;
4064 }
4065
4066 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4067                                 int flags, struct net_device *dev,
4068                                 struct survey_info *survey)
4069 {
4070         void *hdr;
4071         struct nlattr *infoattr;
4072
4073         hdr = nl80211hdr_put(msg, pid, seq, flags,
4074                              NL80211_CMD_NEW_SURVEY_RESULTS);
4075         if (!hdr)
4076                 return -ENOMEM;
4077
4078         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4079
4080         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4081         if (!infoattr)
4082                 goto nla_put_failure;
4083
4084         NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4085                     survey->channel->center_freq);
4086         if (survey->filled & SURVEY_INFO_NOISE_DBM)
4087                 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4088                             survey->noise);
4089         if (survey->filled & SURVEY_INFO_IN_USE)
4090                 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4091         if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4092                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4093                             survey->channel_time);
4094         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4095                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4096                             survey->channel_time_busy);
4097         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4098                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4099                             survey->channel_time_ext_busy);
4100         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4101                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4102                             survey->channel_time_rx);
4103         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4104                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4105                             survey->channel_time_tx);
4106
4107         nla_nest_end(msg, infoattr);
4108
4109         return genlmsg_end(msg, hdr);
4110
4111  nla_put_failure:
4112         genlmsg_cancel(msg, hdr);
4113         return -EMSGSIZE;
4114 }
4115
4116 static int nl80211_dump_survey(struct sk_buff *skb,
4117                         struct netlink_callback *cb)
4118 {
4119         struct survey_info survey;
4120         struct cfg80211_registered_device *dev;
4121         struct net_device *netdev;
4122         int survey_idx = cb->args[1];
4123         int res;
4124
4125         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4126         if (res)
4127                 return res;
4128
4129         if (!dev->ops->dump_survey) {
4130                 res = -EOPNOTSUPP;
4131                 goto out_err;
4132         }
4133
4134         while (1) {
4135                 struct ieee80211_channel *chan;
4136
4137                 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4138                                             &survey);
4139                 if (res == -ENOENT)
4140                         break;
4141                 if (res)
4142                         goto out_err;
4143
4144                 /* Survey without a channel doesn't make sense */
4145                 if (!survey.channel) {
4146                         res = -EINVAL;
4147                         goto out;
4148                 }
4149
4150                 chan = ieee80211_get_channel(&dev->wiphy,
4151                                              survey.channel->center_freq);
4152                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4153                         survey_idx++;
4154                         continue;
4155                 }
4156
4157                 if (nl80211_send_survey(skb,
4158                                 NETLINK_CB(cb->skb).pid,
4159                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4160                                 netdev,
4161                                 &survey) < 0)
4162                         goto out;
4163                 survey_idx++;
4164         }
4165
4166  out:
4167         cb->args[1] = survey_idx;
4168         res = skb->len;
4169  out_err:
4170         nl80211_finish_netdev_dump(dev);
4171         return res;
4172 }
4173
4174 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4175 {
4176         return auth_type <= NL80211_AUTHTYPE_MAX;
4177 }
4178
4179 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4180 {
4181         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4182                                   NL80211_WPA_VERSION_2));
4183 }
4184
4185 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4186 {
4187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4188         struct net_device *dev = info->user_ptr[1];
4189         struct ieee80211_channel *chan;
4190         const u8 *bssid, *ssid, *ie = NULL;
4191         int err, ssid_len, ie_len = 0;
4192         enum nl80211_auth_type auth_type;
4193         struct key_parse key;
4194         bool local_state_change;
4195
4196         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4197                 return -EINVAL;
4198
4199         if (!info->attrs[NL80211_ATTR_MAC])
4200                 return -EINVAL;
4201
4202         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4203                 return -EINVAL;
4204
4205         if (!info->attrs[NL80211_ATTR_SSID])
4206                 return -EINVAL;
4207
4208         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4209                 return -EINVAL;
4210
4211         err = nl80211_parse_key(info, &key);
4212         if (err)
4213                 return err;
4214
4215         if (key.idx >= 0) {
4216                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4217                         return -EINVAL;
4218                 if (!key.p.key || !key.p.key_len)
4219                         return -EINVAL;
4220                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4221                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4222                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4223                      key.p.key_len != WLAN_KEY_LEN_WEP104))
4224                         return -EINVAL;
4225                 if (key.idx > 4)
4226                         return -EINVAL;
4227         } else {
4228                 key.p.key_len = 0;
4229                 key.p.key = NULL;
4230         }
4231
4232         if (key.idx >= 0) {
4233                 int i;
4234                 bool ok = false;
4235                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4236                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4237                                 ok = true;
4238                                 break;
4239                         }
4240                 }
4241                 if (!ok)
4242                         return -EINVAL;
4243         }
4244
4245         if (!rdev->ops->auth)
4246                 return -EOPNOTSUPP;
4247
4248         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4249             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4250                 return -EOPNOTSUPP;
4251
4252         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4253         chan = ieee80211_get_channel(&rdev->wiphy,
4254                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4255         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4256                 return -EINVAL;
4257
4258         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4259         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4260
4261         if (info->attrs[NL80211_ATTR_IE]) {
4262                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4263                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4264         }
4265
4266         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4267         if (!nl80211_valid_auth_type(auth_type))
4268                 return -EINVAL;
4269
4270         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4271
4272         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4273                                   ssid, ssid_len, ie, ie_len,
4274                                   key.p.key, key.p.key_len, key.idx,
4275                                   local_state_change);
4276 }
4277
4278 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4279                                    struct genl_info *info,
4280                                    struct cfg80211_crypto_settings *settings,
4281                                    int cipher_limit)
4282 {
4283         memset(settings, 0, sizeof(*settings));
4284
4285         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4286
4287         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4288                 u16 proto;
4289                 proto = nla_get_u16(
4290                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4291                 settings->control_port_ethertype = cpu_to_be16(proto);
4292                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4293                     proto != ETH_P_PAE)
4294                         return -EINVAL;
4295                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4296                         settings->control_port_no_encrypt = true;
4297         } else
4298                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4299
4300         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4301                 void *data;
4302                 int len, i;
4303
4304                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4305                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4306                 settings->n_ciphers_pairwise = len / sizeof(u32);
4307
4308                 if (len % sizeof(u32))
4309                         return -EINVAL;
4310
4311                 if (settings->n_ciphers_pairwise > cipher_limit)
4312                         return -EINVAL;
4313
4314                 memcpy(settings->ciphers_pairwise, data, len);
4315
4316                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4317                         if (!cfg80211_supported_cipher_suite(
4318                                         &rdev->wiphy,
4319                                         settings->ciphers_pairwise[i]))
4320                                 return -EINVAL;
4321         }
4322
4323         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4324                 settings->cipher_group =
4325                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4326                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4327                                                      settings->cipher_group))
4328                         return -EINVAL;
4329         }
4330
4331         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4332                 settings->wpa_versions =
4333                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4334                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4335                         return -EINVAL;
4336         }
4337
4338         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4339                 void *data;
4340                 int len;
4341
4342                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4343                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4344                 settings->n_akm_suites = len / sizeof(u32);
4345
4346                 if (len % sizeof(u32))
4347                         return -EINVAL;
4348
4349                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4350                         return -EINVAL;
4351
4352                 memcpy(settings->akm_suites, data, len);
4353         }
4354
4355         return 0;
4356 }
4357
4358 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4359 {
4360         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4361         struct net_device *dev = info->user_ptr[1];
4362         struct cfg80211_crypto_settings crypto;
4363         struct ieee80211_channel *chan;
4364         const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4365         int err, ssid_len, ie_len = 0;
4366         bool use_mfp = false;
4367
4368         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4369                 return -EINVAL;
4370
4371         if (!info->attrs[NL80211_ATTR_MAC] ||
4372             !info->attrs[NL80211_ATTR_SSID] ||
4373             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4374                 return -EINVAL;
4375
4376         if (!rdev->ops->assoc)
4377                 return -EOPNOTSUPP;
4378
4379         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4380             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4381                 return -EOPNOTSUPP;
4382
4383         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4384
4385         chan = ieee80211_get_channel(&rdev->wiphy,
4386                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4387         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4388                 return -EINVAL;
4389
4390         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4391         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4392
4393         if (info->attrs[NL80211_ATTR_IE]) {
4394                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4395                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4396         }
4397
4398         if (info->attrs[NL80211_ATTR_USE_MFP]) {
4399                 enum nl80211_mfp mfp =
4400                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4401                 if (mfp == NL80211_MFP_REQUIRED)
4402                         use_mfp = true;
4403                 else if (mfp != NL80211_MFP_NO)
4404                         return -EINVAL;
4405         }
4406
4407         if (info->attrs[NL80211_ATTR_PREV_BSSID])
4408                 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4409
4410         err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4411         if (!err)
4412                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4413                                           ssid, ssid_len, ie, ie_len, use_mfp,
4414                                           &crypto);
4415
4416         return err;
4417 }
4418
4419 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4420 {
4421         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4422         struct net_device *dev = info->user_ptr[1];
4423         const u8 *ie = NULL, *bssid;
4424         int ie_len = 0;
4425         u16 reason_code;
4426         bool local_state_change;
4427
4428         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4429                 return -EINVAL;
4430
4431         if (!info->attrs[NL80211_ATTR_MAC])
4432                 return -EINVAL;
4433
4434         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4435                 return -EINVAL;
4436
4437         if (!rdev->ops->deauth)
4438                 return -EOPNOTSUPP;
4439
4440         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4441             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4442                 return -EOPNOTSUPP;
4443
4444         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4445
4446         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4447         if (reason_code == 0) {
4448                 /* Reason Code 0 is reserved */
4449                 return -EINVAL;
4450         }
4451
4452         if (info->attrs[NL80211_ATTR_IE]) {
4453                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4454                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4455         }
4456
4457         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4458
4459         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4460                                     local_state_change);
4461 }
4462
4463 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4464 {
4465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4466         struct net_device *dev = info->user_ptr[1];
4467         const u8 *ie = NULL, *bssid;
4468         int ie_len = 0;
4469         u16 reason_code;
4470         bool local_state_change;
4471
4472         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4473                 return -EINVAL;
4474
4475         if (!info->attrs[NL80211_ATTR_MAC])
4476                 return -EINVAL;
4477
4478         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4479                 return -EINVAL;
4480
4481         if (!rdev->ops->disassoc)
4482                 return -EOPNOTSUPP;
4483
4484         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4485             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4486                 return -EOPNOTSUPP;
4487
4488         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4489
4490         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4491         if (reason_code == 0) {
4492                 /* Reason Code 0 is reserved */
4493                 return -EINVAL;
4494         }
4495
4496         if (info->attrs[NL80211_ATTR_IE]) {
4497                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4498                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4499         }
4500
4501         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4502
4503         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4504                                       local_state_change);
4505 }
4506
4507 static bool
4508 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4509                          int mcast_rate[IEEE80211_NUM_BANDS],
4510                          int rateval)
4511 {
4512         struct wiphy *wiphy = &rdev->wiphy;
4513         bool found = false;
4514         int band, i;
4515
4516         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4517                 struct ieee80211_supported_band *sband;
4518
4519                 sband = wiphy->bands[band];
4520                 if (!sband)
4521                         continue;
4522
4523                 for (i = 0; i < sband->n_bitrates; i++) {
4524                         if (sband->bitrates[i].bitrate == rateval) {
4525                                 mcast_rate[band] = i + 1;
4526                                 found = true;
4527                                 break;
4528                         }
4529                 }
4530         }
4531
4532         return found;
4533 }
4534
4535 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4536 {
4537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4538         struct net_device *dev = info->user_ptr[1];
4539         struct cfg80211_ibss_params ibss;
4540         struct wiphy *wiphy;
4541         struct cfg80211_cached_keys *connkeys = NULL;
4542         int err;
4543
4544         memset(&ibss, 0, sizeof(ibss));
4545
4546         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4547                 return -EINVAL;
4548
4549         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4550             !info->attrs[NL80211_ATTR_SSID] ||
4551             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4552                 return -EINVAL;
4553
4554         ibss.beacon_interval = 100;
4555
4556         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4557                 ibss.beacon_interval =
4558                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4559                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4560                         return -EINVAL;
4561         }
4562
4563         if (!rdev->ops->join_ibss)
4564                 return -EOPNOTSUPP;
4565
4566         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4567                 return -EOPNOTSUPP;
4568
4569         wiphy = &rdev->wiphy;
4570
4571         if (info->attrs[NL80211_ATTR_MAC]) {
4572                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4573
4574                 if (!is_valid_ether_addr(ibss.bssid))
4575                         return -EINVAL;
4576         }
4577         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4578         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4579
4580         if (info->attrs[NL80211_ATTR_IE]) {
4581                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4582                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4583         }
4584
4585         ibss.channel = ieee80211_get_channel(wiphy,
4586                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4587         if (!ibss.channel ||
4588             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4589             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4590                 return -EINVAL;
4591
4592         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4593         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4594
4595         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4596                 u8 *rates =
4597                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4598                 int n_rates =
4599                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4600                 struct ieee80211_supported_band *sband =
4601                         wiphy->bands[ibss.channel->band];
4602                 int err;
4603
4604                 err = ieee80211_get_ratemask(sband, rates, n_rates,
4605                                              &ibss.basic_rates);
4606                 if (err)
4607                         return err;
4608         }
4609
4610         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4611             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4612                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4613                 return -EINVAL;
4614
4615         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4616                 connkeys = nl80211_parse_connkeys(rdev,
4617                                         info->attrs[NL80211_ATTR_KEYS]);
4618                 if (IS_ERR(connkeys))
4619                         return PTR_ERR(connkeys);
4620         }
4621
4622         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4623         if (err)
4624                 kfree(connkeys);
4625         return err;
4626 }
4627
4628 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4629 {
4630         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4631         struct net_device *dev = info->user_ptr[1];
4632
4633         if (!rdev->ops->leave_ibss)
4634                 return -EOPNOTSUPP;
4635
4636         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4637                 return -EOPNOTSUPP;
4638
4639         return cfg80211_leave_ibss(rdev, dev, false);
4640 }
4641
4642 #ifdef CONFIG_NL80211_TESTMODE
4643 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4644         .name = "testmode",
4645 };
4646
4647 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4648 {
4649         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4650         int err;
4651
4652         if (!info->attrs[NL80211_ATTR_TESTDATA])
4653                 return -EINVAL;
4654
4655         err = -EOPNOTSUPP;
4656         if (rdev->ops->testmode_cmd) {
4657                 rdev->testmode_info = info;
4658                 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4659                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4660                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4661                 rdev->testmode_info = NULL;
4662         }
4663
4664         return err;
4665 }
4666
4667 static int nl80211_testmode_dump(struct sk_buff *skb,
4668                                  struct netlink_callback *cb)
4669 {
4670         struct cfg80211_registered_device *dev;
4671         int err;
4672         long phy_idx;
4673         void *data = NULL;
4674         int data_len = 0;
4675
4676         if (cb->args[0]) {
4677                 /*
4678                  * 0 is a valid index, but not valid for args[0],
4679                  * so we need to offset by 1.
4680                  */
4681                 phy_idx = cb->args[0] - 1;
4682         } else {
4683                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4684                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
4685                                   nl80211_policy);
4686                 if (err)
4687                         return err;
4688                 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4689                         return -EINVAL;
4690                 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4691                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4692                         cb->args[1] =
4693                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4694         }
4695
4696         if (cb->args[1]) {
4697                 data = nla_data((void *)cb->args[1]);
4698                 data_len = nla_len((void *)cb->args[1]);
4699         }
4700
4701         mutex_lock(&cfg80211_mutex);
4702         dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4703         if (!dev) {
4704                 mutex_unlock(&cfg80211_mutex);
4705                 return -ENOENT;
4706         }
4707         cfg80211_lock_rdev(dev);
4708         mutex_unlock(&cfg80211_mutex);
4709
4710         if (!dev->ops->testmode_dump) {
4711                 err = -EOPNOTSUPP;
4712                 goto out_err;
4713         }
4714
4715         while (1) {
4716                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4717                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
4718                                            NL80211_CMD_TESTMODE);
4719                 struct nlattr *tmdata;
4720
4721                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4722                         genlmsg_cancel(skb, hdr);
4723                         break;
4724                 }
4725
4726                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4727                 if (!tmdata) {
4728                         genlmsg_cancel(skb, hdr);
4729                         break;
4730                 }
4731                 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4732                                               data, data_len);
4733                 nla_nest_end(skb, tmdata);
4734
4735                 if (err == -ENOBUFS || err == -ENOENT) {
4736                         genlmsg_cancel(skb, hdr);
4737                         break;
4738                 } else if (err) {
4739                         genlmsg_cancel(skb, hdr);
4740                         goto out_err;
4741                 }
4742
4743                 genlmsg_end(skb, hdr);
4744         }
4745
4746         err = skb->len;
4747         /* see above */
4748         cb->args[0] = phy_idx + 1;
4749  out_err:
4750         cfg80211_unlock_rdev(dev);
4751         return err;
4752 }
4753
4754 static struct sk_buff *
4755 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4756                               int approxlen, u32 pid, u32 seq, gfp_t gfp)
4757 {
4758         struct sk_buff *skb;
4759         void *hdr;
4760         struct nlattr *data;
4761
4762         skb = nlmsg_new(approxlen + 100, gfp);
4763         if (!skb)
4764                 return NULL;
4765
4766         hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4767         if (!hdr) {
4768                 kfree_skb(skb);
4769                 return NULL;
4770         }
4771
4772         NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4773         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4774
4775         ((void **)skb->cb)[0] = rdev;
4776         ((void **)skb->cb)[1] = hdr;
4777         ((void **)skb->cb)[2] = data;
4778
4779         return skb;
4780
4781  nla_put_failure:
4782         kfree_skb(skb);
4783         return NULL;
4784 }
4785
4786 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4787                                                   int approxlen)
4788 {
4789         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4790
4791         if (WARN_ON(!rdev->testmode_info))
4792                 return NULL;
4793
4794         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4795                                 rdev->testmode_info->snd_pid,
4796                                 rdev->testmode_info->snd_seq,
4797                                 GFP_KERNEL);
4798 }
4799 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4800
4801 int cfg80211_testmode_reply(struct sk_buff *skb)
4802 {
4803         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4804         void *hdr = ((void **)skb->cb)[1];
4805         struct nlattr *data = ((void **)skb->cb)[2];
4806
4807         if (WARN_ON(!rdev->testmode_info)) {
4808                 kfree_skb(skb);
4809                 return -EINVAL;
4810         }
4811
4812         nla_nest_end(skb, data);
4813         genlmsg_end(skb, hdr);
4814         return genlmsg_reply(skb, rdev->testmode_info);
4815 }
4816 EXPORT_SYMBOL(cfg80211_testmode_reply);
4817
4818 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4819                                                   int approxlen, gfp_t gfp)
4820 {
4821         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4822
4823         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4824 }
4825 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4826
4827 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4828 {
4829         void *hdr = ((void **)skb->cb)[1];
4830         struct nlattr *data = ((void **)skb->cb)[2];
4831
4832         nla_nest_end(skb, data);
4833         genlmsg_end(skb, hdr);
4834         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4835 }
4836 EXPORT_SYMBOL(cfg80211_testmode_event);
4837 #endif
4838
4839 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4840 {
4841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4842         struct net_device *dev = info->user_ptr[1];
4843         struct cfg80211_connect_params connect;
4844         struct wiphy *wiphy;
4845         struct cfg80211_cached_keys *connkeys = NULL;
4846         int err;
4847
4848         memset(&connect, 0, sizeof(connect));
4849
4850         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4851                 return -EINVAL;
4852
4853         if (!info->attrs[NL80211_ATTR_SSID] ||
4854             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4855                 return -EINVAL;
4856
4857         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4858                 connect.auth_type =
4859                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4860                 if (!nl80211_valid_auth_type(connect.auth_type))
4861                         return -EINVAL;
4862         } else
4863                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4864
4865         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4866
4867         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4868                                       NL80211_MAX_NR_CIPHER_SUITES);
4869         if (err)
4870                 return err;
4871
4872         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4873             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4874                 return -EOPNOTSUPP;
4875
4876         wiphy = &rdev->wiphy;
4877
4878         if (info->attrs[NL80211_ATTR_MAC])
4879                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4880         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4881         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4882
4883         if (info->attrs[NL80211_ATTR_IE]) {
4884                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4885                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4886         }
4887
4888         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4889                 connect.channel =
4890                         ieee80211_get_channel(wiphy,
4891                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4892                 if (!connect.channel ||
4893                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
4894                         return -EINVAL;
4895         }
4896
4897         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4898                 connkeys = nl80211_parse_connkeys(rdev,
4899                                         info->attrs[NL80211_ATTR_KEYS]);
4900                 if (IS_ERR(connkeys))
4901                         return PTR_ERR(connkeys);
4902         }
4903
4904         err = cfg80211_connect(rdev, dev, &connect, connkeys);
4905         if (err)
4906                 kfree(connkeys);
4907         return err;
4908 }
4909
4910 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4911 {
4912         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4913         struct net_device *dev = info->user_ptr[1];
4914         u16 reason;
4915
4916         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4917                 reason = WLAN_REASON_DEAUTH_LEAVING;
4918         else
4919                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4920
4921         if (reason == 0)
4922                 return -EINVAL;
4923
4924         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4925             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4926                 return -EOPNOTSUPP;
4927
4928         return cfg80211_disconnect(rdev, dev, reason, true);
4929 }
4930
4931 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4932 {
4933         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4934         struct net *net;
4935         int err;
4936         u32 pid;
4937
4938         if (!info->attrs[NL80211_ATTR_PID])
4939                 return -EINVAL;
4940
4941         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4942
4943         net = get_net_ns_by_pid(pid);
4944         if (IS_ERR(net))
4945                 return PTR_ERR(net);
4946
4947         err = 0;
4948
4949         /* check if anything to do */
4950         if (!net_eq(wiphy_net(&rdev->wiphy), net))
4951                 err = cfg80211_switch_netns(rdev, net);
4952
4953         put_net(net);
4954         return err;
4955 }
4956
4957 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4958 {
4959         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4960         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4961                         struct cfg80211_pmksa *pmksa) = NULL;
4962         struct net_device *dev = info->user_ptr[1];
4963         struct cfg80211_pmksa pmksa;
4964
4965         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4966
4967         if (!info->attrs[NL80211_ATTR_MAC])
4968                 return -EINVAL;
4969
4970         if (!info->attrs[NL80211_ATTR_PMKID])
4971                 return -EINVAL;
4972
4973         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4974         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4975
4976         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4977             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4978                 return -EOPNOTSUPP;
4979
4980         switch (info->genlhdr->cmd) {
4981         case NL80211_CMD_SET_PMKSA:
4982                 rdev_ops = rdev->ops->set_pmksa;
4983                 break;
4984         case NL80211_CMD_DEL_PMKSA:
4985                 rdev_ops = rdev->ops->del_pmksa;
4986                 break;
4987         default:
4988                 WARN_ON(1);
4989                 break;
4990         }
4991
4992         if (!rdev_ops)
4993                 return -EOPNOTSUPP;
4994
4995         return rdev_ops(&rdev->wiphy, dev, &pmksa);
4996 }
4997
4998 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4999 {
5000         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5001         struct net_device *dev = info->user_ptr[1];
5002
5003         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5004             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5005                 return -EOPNOTSUPP;
5006
5007         if (!rdev->ops->flush_pmksa)
5008                 return -EOPNOTSUPP;
5009
5010         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5011 }
5012
5013 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5014 {
5015         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5016         struct net_device *dev = info->user_ptr[1];
5017         u8 action_code, dialog_token;
5018         u16 status_code;
5019         u8 *peer;
5020
5021         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5022             !rdev->ops->tdls_mgmt)
5023                 return -EOPNOTSUPP;
5024
5025         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5026             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5027             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5028             !info->attrs[NL80211_ATTR_IE] ||
5029             !info->attrs[NL80211_ATTR_MAC])
5030                 return -EINVAL;
5031
5032         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5033         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5034         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5035         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5036
5037         return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5038                                     dialog_token, status_code,
5039                                     nla_data(info->attrs[NL80211_ATTR_IE]),
5040                                     nla_len(info->attrs[NL80211_ATTR_IE]));
5041 }
5042
5043 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5044 {
5045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5046         struct net_device *dev = info->user_ptr[1];
5047         enum nl80211_tdls_operation operation;
5048         u8 *peer;
5049
5050         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5051             !rdev->ops->tdls_oper)
5052                 return -EOPNOTSUPP;
5053
5054         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5055             !info->attrs[NL80211_ATTR_MAC])
5056                 return -EINVAL;
5057
5058         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5059         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5060
5061         return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5062 }
5063
5064 static int nl80211_remain_on_channel(struct sk_buff *skb,
5065                                      struct genl_info *info)
5066 {
5067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5068         struct net_device *dev = info->user_ptr[1];
5069         struct ieee80211_channel *chan;
5070         struct sk_buff *msg;
5071         void *hdr;
5072         u64 cookie;
5073         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5074         u32 freq, duration;
5075         int err;
5076
5077         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5078             !info->attrs[NL80211_ATTR_DURATION])
5079                 return -EINVAL;
5080
5081         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5082
5083         /*
5084          * We should be on that channel for at least one jiffie,
5085          * and more than 5 seconds seems excessive.
5086          */
5087         if (!duration || !msecs_to_jiffies(duration) ||
5088             duration > rdev->wiphy.max_remain_on_channel_duration)
5089                 return -EINVAL;
5090
5091         if (!rdev->ops->remain_on_channel)
5092                 return -EOPNOTSUPP;
5093
5094         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5095                 channel_type = nla_get_u32(
5096                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5097                 if (channel_type != NL80211_CHAN_NO_HT &&
5098                     channel_type != NL80211_CHAN_HT20 &&
5099                     channel_type != NL80211_CHAN_HT40PLUS &&
5100                     channel_type != NL80211_CHAN_HT40MINUS)
5101                         return -EINVAL;
5102         }
5103
5104         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5105         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5106         if (chan == NULL)
5107                 return -EINVAL;
5108
5109         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5110         if (!msg)
5111                 return -ENOMEM;
5112
5113         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5114                              NL80211_CMD_REMAIN_ON_CHANNEL);
5115
5116         if (IS_ERR(hdr)) {
5117                 err = PTR_ERR(hdr);
5118                 goto free_msg;
5119         }
5120
5121         err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5122                                            channel_type, duration, &cookie);
5123
5124         if (err)
5125                 goto free_msg;
5126
5127         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5128
5129         genlmsg_end(msg, hdr);
5130
5131         return genlmsg_reply(msg, info);
5132
5133  nla_put_failure:
5134         err = -ENOBUFS;
5135  free_msg:
5136         nlmsg_free(msg);
5137         return err;
5138 }
5139
5140 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5141                                             struct genl_info *info)
5142 {
5143         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5144         struct net_device *dev = info->user_ptr[1];
5145         u64 cookie;
5146
5147         if (!info->attrs[NL80211_ATTR_COOKIE])
5148                 return -EINVAL;
5149
5150         if (!rdev->ops->cancel_remain_on_channel)
5151                 return -EOPNOTSUPP;
5152
5153         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5154
5155         return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5156 }
5157
5158 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5159                            u8 *rates, u8 rates_len)
5160 {
5161         u8 i;
5162         u32 mask = 0;
5163
5164         for (i = 0; i < rates_len; i++) {
5165                 int rate = (rates[i] & 0x7f) * 5;
5166                 int ridx;
5167                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5168                         struct ieee80211_rate *srate =
5169                                 &sband->bitrates[ridx];
5170                         if (rate == srate->bitrate) {
5171                                 mask |= 1 << ridx;
5172                                 break;
5173                         }
5174                 }
5175                 if (ridx == sband->n_bitrates)
5176                         return 0; /* rate not found */
5177         }
5178
5179         return mask;
5180 }
5181
5182 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5183         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5184                                     .len = NL80211_MAX_SUPP_RATES },
5185 };
5186
5187 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5188                                        struct genl_info *info)
5189 {
5190         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5192         struct cfg80211_bitrate_mask mask;
5193         int rem, i;
5194         struct net_device *dev = info->user_ptr[1];
5195         struct nlattr *tx_rates;
5196         struct ieee80211_supported_band *sband;
5197
5198         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5199                 return -EINVAL;
5200
5201         if (!rdev->ops->set_bitrate_mask)
5202                 return -EOPNOTSUPP;
5203
5204         memset(&mask, 0, sizeof(mask));
5205         /* Default to all rates enabled */
5206         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5207                 sband = rdev->wiphy.bands[i];
5208                 mask.control[i].legacy =
5209                         sband ? (1 << sband->n_bitrates) - 1 : 0;
5210         }
5211
5212         /*
5213          * The nested attribute uses enum nl80211_band as the index. This maps
5214          * directly to the enum ieee80211_band values used in cfg80211.
5215          */
5216         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5217         {
5218                 enum ieee80211_band band = nla_type(tx_rates);
5219                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5220                         return -EINVAL;
5221                 sband = rdev->wiphy.bands[band];
5222                 if (sband == NULL)
5223                         return -EINVAL;
5224                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5225                           nla_len(tx_rates), nl80211_txattr_policy);
5226                 if (tb[NL80211_TXRATE_LEGACY]) {
5227                         mask.control[band].legacy = rateset_to_mask(
5228                                 sband,
5229                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5230                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5231                         if (mask.control[band].legacy == 0)
5232                                 return -EINVAL;
5233                 }
5234         }
5235
5236         return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5237 }
5238
5239 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5240 {
5241         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5242         struct net_device *dev = info->user_ptr[1];
5243         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5244
5245         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5246                 return -EINVAL;
5247
5248         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5249                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5250
5251         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5252             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5253             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5254             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5255             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5256             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5257             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5258                 return -EOPNOTSUPP;
5259
5260         /* not much point in registering if we can't reply */
5261         if (!rdev->ops->mgmt_tx)
5262                 return -EOPNOTSUPP;
5263
5264         return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5265                         frame_type,
5266                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5267                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5268 }
5269
5270 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5271 {
5272         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5273         struct net_device *dev = info->user_ptr[1];
5274         struct ieee80211_channel *chan;
5275         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5276         bool channel_type_valid = false;
5277         u32 freq;
5278         int err;
5279         void *hdr;
5280         u64 cookie;
5281         struct sk_buff *msg;
5282         unsigned int wait = 0;
5283         bool offchan;
5284         bool no_cck;
5285
5286         if (!info->attrs[NL80211_ATTR_FRAME] ||
5287             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5288                 return -EINVAL;
5289
5290         if (!rdev->ops->mgmt_tx)
5291                 return -EOPNOTSUPP;
5292
5293         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5294             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5295             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5296             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5297             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5298             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5299             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5300                 return -EOPNOTSUPP;
5301
5302         if (info->attrs[NL80211_ATTR_DURATION]) {
5303                 if (!rdev->ops->mgmt_tx_cancel_wait)
5304                         return -EINVAL;
5305                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5306         }
5307
5308         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5309                 channel_type = nla_get_u32(
5310                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5311                 if (channel_type != NL80211_CHAN_NO_HT &&
5312                     channel_type != NL80211_CHAN_HT20 &&
5313                     channel_type != NL80211_CHAN_HT40PLUS &&
5314                     channel_type != NL80211_CHAN_HT40MINUS)
5315                         return -EINVAL;
5316                 channel_type_valid = true;
5317         }
5318
5319         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5320
5321         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5322
5323         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5324         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5325         if (chan == NULL)
5326                 return -EINVAL;
5327
5328         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5329         if (!msg)
5330                 return -ENOMEM;
5331
5332         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5333                              NL80211_CMD_FRAME);
5334
5335         if (IS_ERR(hdr)) {
5336                 err = PTR_ERR(hdr);
5337                 goto free_msg;
5338         }
5339         err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5340                                     channel_type_valid, wait,
5341                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
5342                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
5343                                     no_cck, &cookie);
5344         if (err)
5345                 goto free_msg;
5346
5347         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5348
5349         genlmsg_end(msg, hdr);
5350         return genlmsg_reply(msg, info);
5351
5352  nla_put_failure:
5353         err = -ENOBUFS;
5354  free_msg:
5355         nlmsg_free(msg);
5356         return err;
5357 }
5358
5359 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5360 {
5361         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5362         struct net_device *dev = info->user_ptr[1];
5363         u64 cookie;
5364
5365         if (!info->attrs[NL80211_ATTR_COOKIE])
5366                 return -EINVAL;
5367
5368         if (!rdev->ops->mgmt_tx_cancel_wait)
5369                 return -EOPNOTSUPP;
5370
5371         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5372             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5373             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5374             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5375             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5376             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5377                 return -EOPNOTSUPP;
5378
5379         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5380
5381         return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5382 }
5383
5384 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5385 {
5386         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5387         struct wireless_dev *wdev;
5388         struct net_device *dev = info->user_ptr[1];
5389         u8 ps_state;
5390         bool state;
5391         int err;
5392
5393         if (!info->attrs[NL80211_ATTR_PS_STATE])
5394                 return -EINVAL;
5395
5396         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5397
5398         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5399                 return -EINVAL;
5400
5401         wdev = dev->ieee80211_ptr;
5402
5403         if (!rdev->ops->set_power_mgmt)
5404                 return -EOPNOTSUPP;
5405
5406         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5407
5408         if (state == wdev->ps)
5409                 return 0;
5410
5411         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5412                                         wdev->ps_timeout);
5413         if (!err)
5414                 wdev->ps = state;
5415         return err;
5416 }
5417
5418 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5419 {
5420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5421         enum nl80211_ps_state ps_state;
5422         struct wireless_dev *wdev;
5423         struct net_device *dev = info->user_ptr[1];
5424         struct sk_buff *msg;
5425         void *hdr;
5426         int err;
5427
5428         wdev = dev->ieee80211_ptr;
5429
5430         if (!rdev->ops->set_power_mgmt)
5431                 return -EOPNOTSUPP;
5432
5433         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5434         if (!msg)
5435                 return -ENOMEM;
5436
5437         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5438                              NL80211_CMD_GET_POWER_SAVE);
5439         if (!hdr) {
5440                 err = -ENOBUFS;
5441                 goto free_msg;
5442         }
5443
5444         if (wdev->ps)
5445                 ps_state = NL80211_PS_ENABLED;
5446         else
5447                 ps_state = NL80211_PS_DISABLED;
5448
5449         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5450
5451         genlmsg_end(msg, hdr);
5452         return genlmsg_reply(msg, info);
5453
5454  nla_put_failure:
5455         err = -ENOBUFS;
5456  free_msg:
5457         nlmsg_free(msg);
5458         return err;
5459 }
5460
5461 static struct nla_policy
5462 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5463         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5464         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5465         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5466 };
5467
5468 static int nl80211_set_cqm_rssi(struct genl_info *info,
5469                                 s32 threshold, u32 hysteresis)
5470 {
5471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5472         struct wireless_dev *wdev;
5473         struct net_device *dev = info->user_ptr[1];
5474
5475         if (threshold > 0)
5476                 return -EINVAL;
5477
5478         wdev = dev->ieee80211_ptr;
5479
5480         if (!rdev->ops->set_cqm_rssi_config)
5481                 return -EOPNOTSUPP;
5482
5483         if (wdev->iftype != NL80211_IFTYPE_STATION &&
5484             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5485                 return -EOPNOTSUPP;
5486
5487         return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5488                                               threshold, hysteresis);
5489 }
5490
5491 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5492 {
5493         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5494         struct nlattr *cqm;
5495         int err;
5496
5497         cqm = info->attrs[NL80211_ATTR_CQM];
5498         if (!cqm) {
5499                 err = -EINVAL;
5500                 goto out;
5501         }
5502
5503         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5504                                nl80211_attr_cqm_policy);
5505         if (err)
5506                 goto out;
5507
5508         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5509             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5510                 s32 threshold;
5511                 u32 hysteresis;
5512                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5513                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5514                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5515         } else
5516                 err = -EINVAL;
5517
5518 out:
5519         return err;
5520 }
5521
5522 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5523 {
5524         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5525         struct net_device *dev = info->user_ptr[1];
5526         struct mesh_config cfg;
5527         struct mesh_setup setup;
5528         int err;
5529
5530         /* start with default */
5531         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5532         memcpy(&setup, &default_mesh_setup, sizeof(setup));
5533
5534         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5535                 /* and parse parameters if given */
5536                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5537                 if (err)
5538                         return err;
5539         }
5540
5541         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5542             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5543                 return -EINVAL;
5544
5545         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5546         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5547
5548         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5549                 /* parse additional setup parameters if given */
5550                 err = nl80211_parse_mesh_setup(info, &setup);
5551                 if (err)
5552                         return err;
5553         }
5554
5555         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5556 }
5557
5558 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5559 {
5560         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5561         struct net_device *dev = info->user_ptr[1];
5562
5563         return cfg80211_leave_mesh(rdev, dev);
5564 }
5565
5566 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5567 {
5568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5569         struct sk_buff *msg;
5570         void *hdr;
5571
5572         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5573                 return -EOPNOTSUPP;
5574
5575         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5576         if (!msg)
5577                 return -ENOMEM;
5578
5579         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5580                              NL80211_CMD_GET_WOWLAN);
5581         if (!hdr)
5582                 goto nla_put_failure;
5583
5584         if (rdev->wowlan) {
5585                 struct nlattr *nl_wowlan;
5586
5587                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5588                 if (!nl_wowlan)
5589                         goto nla_put_failure;
5590
5591                 if (rdev->wowlan->any)
5592                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5593                 if (rdev->wowlan->disconnect)
5594                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5595                 if (rdev->wowlan->magic_pkt)
5596                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5597                 if (rdev->wowlan->gtk_rekey_failure)
5598                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5599                 if (rdev->wowlan->eap_identity_req)
5600                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5601                 if (rdev->wowlan->four_way_handshake)
5602                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5603                 if (rdev->wowlan->rfkill_release)
5604                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5605                 if (rdev->wowlan->n_patterns) {
5606                         struct nlattr *nl_pats, *nl_pat;
5607                         int i, pat_len;
5608
5609                         nl_pats = nla_nest_start(msg,
5610                                         NL80211_WOWLAN_TRIG_PKT_PATTERN);
5611                         if (!nl_pats)
5612                                 goto nla_put_failure;
5613
5614                         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5615                                 nl_pat = nla_nest_start(msg, i + 1);
5616                                 if (!nl_pat)
5617                                         goto nla_put_failure;
5618                                 pat_len = rdev->wowlan->patterns[i].pattern_len;
5619                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5620                                         DIV_ROUND_UP(pat_len, 8),
5621                                         rdev->wowlan->patterns[i].mask);
5622                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5623                                         pat_len,
5624                                         rdev->wowlan->patterns[i].pattern);
5625                                 nla_nest_end(msg, nl_pat);
5626                         }
5627                         nla_nest_end(msg, nl_pats);
5628                 }
5629
5630                 nla_nest_end(msg, nl_wowlan);
5631         }
5632
5633         genlmsg_end(msg, hdr);
5634         return genlmsg_reply(msg, info);
5635
5636 nla_put_failure:
5637         nlmsg_free(msg);
5638         return -ENOBUFS;
5639 }
5640
5641 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5642 {
5643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5644         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5645         struct cfg80211_wowlan no_triggers = {};
5646         struct cfg80211_wowlan new_triggers = {};
5647         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5648         int err, i;
5649
5650         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5651                 return -EOPNOTSUPP;
5652
5653         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5654                 goto no_triggers;
5655
5656         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5657                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5658                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5659                         nl80211_wowlan_policy);
5660         if (err)
5661                 return err;
5662
5663         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5664                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5665                         return -EINVAL;
5666                 new_triggers.any = true;
5667         }
5668
5669         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5670                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5671                         return -EINVAL;
5672                 new_triggers.disconnect = true;
5673         }
5674
5675         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5676                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5677                         return -EINVAL;
5678                 new_triggers.magic_pkt = true;
5679         }
5680
5681         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5682                 return -EINVAL;
5683
5684         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5685                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5686                         return -EINVAL;
5687                 new_triggers.gtk_rekey_failure = true;
5688         }
5689
5690         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5691                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5692                         return -EINVAL;
5693                 new_triggers.eap_identity_req = true;
5694         }
5695
5696         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5697                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5698                         return -EINVAL;
5699                 new_triggers.four_way_handshake = true;
5700         }
5701
5702         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5703                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5704                         return -EINVAL;
5705                 new_triggers.rfkill_release = true;
5706         }
5707
5708         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5709                 struct nlattr *pat;
5710                 int n_patterns = 0;
5711                 int rem, pat_len, mask_len;
5712                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5713
5714                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5715                                     rem)
5716                         n_patterns++;
5717                 if (n_patterns > wowlan->n_patterns)
5718                         return -EINVAL;
5719
5720                 new_triggers.patterns = kcalloc(n_patterns,
5721                                                 sizeof(new_triggers.patterns[0]),
5722                                                 GFP_KERNEL);
5723                 if (!new_triggers.patterns)
5724                         return -ENOMEM;
5725
5726                 new_triggers.n_patterns = n_patterns;
5727                 i = 0;
5728
5729                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5730                                     rem) {
5731                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5732                                   nla_data(pat), nla_len(pat), NULL);
5733                         err = -EINVAL;
5734                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5735                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5736                                 goto error;
5737                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5738                         mask_len = DIV_ROUND_UP(pat_len, 8);
5739                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5740                             mask_len)
5741                                 goto error;
5742                         if (pat_len > wowlan->pattern_max_len ||
5743                             pat_len < wowlan->pattern_min_len)
5744                                 goto error;
5745
5746                         new_triggers.patterns[i].mask =
5747                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
5748                         if (!new_triggers.patterns[i].mask) {
5749                                 err = -ENOMEM;
5750                                 goto error;
5751                         }
5752                         new_triggers.patterns[i].pattern =
5753                                 new_triggers.patterns[i].mask + mask_len;
5754                         memcpy(new_triggers.patterns[i].mask,
5755                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5756                                mask_len);
5757                         new_triggers.patterns[i].pattern_len = pat_len;
5758                         memcpy(new_triggers.patterns[i].pattern,
5759                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5760                                pat_len);
5761                         i++;
5762                 }
5763         }
5764
5765         if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5766                 struct cfg80211_wowlan *ntrig;
5767                 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5768                                 GFP_KERNEL);
5769                 if (!ntrig) {
5770                         err = -ENOMEM;
5771                         goto error;
5772                 }
5773                 cfg80211_rdev_free_wowlan(rdev);
5774                 rdev->wowlan = ntrig;
5775         } else {
5776  no_triggers:
5777                 cfg80211_rdev_free_wowlan(rdev);
5778                 rdev->wowlan = NULL;
5779         }
5780
5781         return 0;
5782  error:
5783         for (i = 0; i < new_triggers.n_patterns; i++)
5784                 kfree(new_triggers.patterns[i].mask);
5785         kfree(new_triggers.patterns);
5786         return err;
5787 }
5788
5789 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5790 {
5791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5792         struct net_device *dev = info->user_ptr[1];
5793         struct wireless_dev *wdev = dev->ieee80211_ptr;
5794         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5795         struct cfg80211_gtk_rekey_data rekey_data;
5796         int err;
5797
5798         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5799                 return -EINVAL;
5800
5801         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5802                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5803                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5804                         nl80211_rekey_policy);
5805         if (err)
5806                 return err;
5807
5808         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5809                 return -ERANGE;
5810         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5811                 return -ERANGE;
5812         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5813                 return -ERANGE;
5814
5815         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5816                NL80211_KEK_LEN);
5817         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5818                NL80211_KCK_LEN);
5819         memcpy(rekey_data.replay_ctr,
5820                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5821                NL80211_REPLAY_CTR_LEN);
5822
5823         wdev_lock(wdev);
5824         if (!wdev->current_bss) {
5825                 err = -ENOTCONN;
5826                 goto out;
5827         }
5828
5829         if (!rdev->ops->set_rekey_data) {
5830                 err = -EOPNOTSUPP;
5831                 goto out;
5832         }
5833
5834         err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5835  out:
5836         wdev_unlock(wdev);
5837         return err;
5838 }
5839
5840 #define NL80211_FLAG_NEED_WIPHY         0x01
5841 #define NL80211_FLAG_NEED_NETDEV        0x02
5842 #define NL80211_FLAG_NEED_RTNL          0x04
5843 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
5844 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
5845                                          NL80211_FLAG_CHECK_NETDEV_UP)
5846
5847 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5848                             struct genl_info *info)
5849 {
5850         struct cfg80211_registered_device *rdev;
5851         struct net_device *dev;
5852         int err;
5853         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5854
5855         if (rtnl)
5856                 rtnl_lock();
5857
5858         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5859                 rdev = cfg80211_get_dev_from_info(info);
5860                 if (IS_ERR(rdev)) {
5861                         if (rtnl)
5862                                 rtnl_unlock();
5863                         return PTR_ERR(rdev);
5864                 }
5865                 info->user_ptr[0] = rdev;
5866         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5867                 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5868                 if (err) {
5869                         if (rtnl)
5870                                 rtnl_unlock();
5871                         return err;
5872                 }
5873                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5874                     !netif_running(dev)) {
5875                         cfg80211_unlock_rdev(rdev);
5876                         dev_put(dev);
5877                         if (rtnl)
5878                                 rtnl_unlock();
5879                         return -ENETDOWN;
5880                 }
5881                 info->user_ptr[0] = rdev;
5882                 info->user_ptr[1] = dev;
5883         }
5884
5885         return 0;
5886 }
5887
5888 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5889                               struct genl_info *info)
5890 {
5891         if (info->user_ptr[0])
5892                 cfg80211_unlock_rdev(info->user_ptr[0]);
5893         if (info->user_ptr[1])
5894                 dev_put(info->user_ptr[1]);
5895         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5896                 rtnl_unlock();
5897 }
5898
5899 static struct genl_ops nl80211_ops[] = {
5900         {
5901                 .cmd = NL80211_CMD_GET_WIPHY,
5902                 .doit = nl80211_get_wiphy,
5903                 .dumpit = nl80211_dump_wiphy,
5904                 .policy = nl80211_policy,
5905                 /* can be retrieved by unprivileged users */
5906                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5907         },
5908         {
5909                 .cmd = NL80211_CMD_SET_WIPHY,
5910                 .doit = nl80211_set_wiphy,
5911                 .policy = nl80211_policy,
5912                 .flags = GENL_ADMIN_PERM,
5913                 .internal_flags = NL80211_FLAG_NEED_RTNL,
5914         },
5915         {
5916                 .cmd = NL80211_CMD_GET_INTERFACE,
5917                 .doit = nl80211_get_interface,
5918                 .dumpit = nl80211_dump_interface,
5919                 .policy = nl80211_policy,
5920                 /* can be retrieved by unprivileged users */
5921                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5922         },
5923         {
5924                 .cmd = NL80211_CMD_SET_INTERFACE,
5925                 .doit = nl80211_set_interface,
5926                 .policy = nl80211_policy,
5927                 .flags = GENL_ADMIN_PERM,
5928                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5929                                   NL80211_FLAG_NEED_RTNL,
5930         },
5931         {
5932                 .cmd = NL80211_CMD_NEW_INTERFACE,
5933                 .doit = nl80211_new_interface,
5934                 .policy = nl80211_policy,
5935                 .flags = GENL_ADMIN_PERM,
5936                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5937                                   NL80211_FLAG_NEED_RTNL,
5938         },
5939         {
5940                 .cmd = NL80211_CMD_DEL_INTERFACE,
5941                 .doit = nl80211_del_interface,
5942                 .policy = nl80211_policy,
5943                 .flags = GENL_ADMIN_PERM,
5944                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5945                                   NL80211_FLAG_NEED_RTNL,
5946         },
5947         {
5948                 .cmd = NL80211_CMD_GET_KEY,
5949                 .doit = nl80211_get_key,
5950                 .policy = nl80211_policy,
5951                 .flags = GENL_ADMIN_PERM,
5952                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5953                                   NL80211_FLAG_NEED_RTNL,
5954         },
5955         {
5956                 .cmd = NL80211_CMD_SET_KEY,
5957                 .doit = nl80211_set_key,
5958                 .policy = nl80211_policy,
5959                 .flags = GENL_ADMIN_PERM,
5960                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5961                                   NL80211_FLAG_NEED_RTNL,
5962         },
5963         {
5964                 .cmd = NL80211_CMD_NEW_KEY,
5965                 .doit = nl80211_new_key,
5966                 .policy = nl80211_policy,
5967                 .flags = GENL_ADMIN_PERM,
5968                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5969                                   NL80211_FLAG_NEED_RTNL,
5970         },
5971         {
5972                 .cmd = NL80211_CMD_DEL_KEY,
5973                 .doit = nl80211_del_key,
5974                 .policy = nl80211_policy,
5975                 .flags = GENL_ADMIN_PERM,
5976                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5977                                   NL80211_FLAG_NEED_RTNL,
5978         },
5979         {
5980                 .cmd = NL80211_CMD_SET_BEACON,
5981                 .policy = nl80211_policy,
5982                 .flags = GENL_ADMIN_PERM,
5983                 .doit = nl80211_addset_beacon,
5984                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5985                                   NL80211_FLAG_NEED_RTNL,
5986         },
5987         {
5988                 .cmd = NL80211_CMD_NEW_BEACON,
5989                 .policy = nl80211_policy,
5990                 .flags = GENL_ADMIN_PERM,
5991                 .doit = nl80211_addset_beacon,
5992                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5993                                   NL80211_FLAG_NEED_RTNL,
5994         },
5995         {
5996                 .cmd = NL80211_CMD_DEL_BEACON,
5997                 .policy = nl80211_policy,
5998                 .flags = GENL_ADMIN_PERM,
5999                 .doit = nl80211_del_beacon,
6000                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6001                                   NL80211_FLAG_NEED_RTNL,
6002         },
6003         {
6004                 .cmd = NL80211_CMD_GET_STATION,
6005                 .doit = nl80211_get_station,
6006                 .dumpit = nl80211_dump_station,
6007                 .policy = nl80211_policy,
6008                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6009                                   NL80211_FLAG_NEED_RTNL,
6010         },
6011         {
6012                 .cmd = NL80211_CMD_SET_STATION,
6013                 .doit = nl80211_set_station,
6014                 .policy = nl80211_policy,
6015                 .flags = GENL_ADMIN_PERM,
6016                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6017                                   NL80211_FLAG_NEED_RTNL,
6018         },
6019         {
6020                 .cmd = NL80211_CMD_NEW_STATION,
6021                 .doit = nl80211_new_station,
6022                 .policy = nl80211_policy,
6023                 .flags = GENL_ADMIN_PERM,
6024                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6025                                   NL80211_FLAG_NEED_RTNL,
6026         },
6027         {
6028                 .cmd = NL80211_CMD_DEL_STATION,
6029                 .doit = nl80211_del_station,
6030                 .policy = nl80211_policy,
6031                 .flags = GENL_ADMIN_PERM,
6032                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6033                                   NL80211_FLAG_NEED_RTNL,
6034         },
6035         {
6036                 .cmd = NL80211_CMD_GET_MPATH,
6037                 .doit = nl80211_get_mpath,
6038                 .dumpit = nl80211_dump_mpath,
6039                 .policy = nl80211_policy,
6040                 .flags = GENL_ADMIN_PERM,
6041                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6042                                   NL80211_FLAG_NEED_RTNL,
6043         },
6044         {
6045                 .cmd = NL80211_CMD_SET_MPATH,
6046                 .doit = nl80211_set_mpath,
6047                 .policy = nl80211_policy,
6048                 .flags = GENL_ADMIN_PERM,
6049                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6050                                   NL80211_FLAG_NEED_RTNL,
6051         },
6052         {
6053                 .cmd = NL80211_CMD_NEW_MPATH,
6054                 .doit = nl80211_new_mpath,
6055                 .policy = nl80211_policy,
6056                 .flags = GENL_ADMIN_PERM,
6057                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6058                                   NL80211_FLAG_NEED_RTNL,
6059         },
6060         {
6061                 .cmd = NL80211_CMD_DEL_MPATH,
6062                 .doit = nl80211_del_mpath,
6063                 .policy = nl80211_policy,
6064                 .flags = GENL_ADMIN_PERM,
6065                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6066                                   NL80211_FLAG_NEED_RTNL,
6067         },
6068         {
6069                 .cmd = NL80211_CMD_SET_BSS,
6070                 .doit = nl80211_set_bss,
6071                 .policy = nl80211_policy,
6072                 .flags = GENL_ADMIN_PERM,
6073                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6074                                   NL80211_FLAG_NEED_RTNL,
6075         },
6076         {
6077                 .cmd = NL80211_CMD_GET_REG,
6078                 .doit = nl80211_get_reg,
6079                 .policy = nl80211_policy,
6080                 /* can be retrieved by unprivileged users */
6081         },
6082         {
6083                 .cmd = NL80211_CMD_SET_REG,
6084                 .doit = nl80211_set_reg,
6085                 .policy = nl80211_policy,
6086                 .flags = GENL_ADMIN_PERM,
6087         },
6088         {
6089                 .cmd = NL80211_CMD_REQ_SET_REG,
6090                 .doit = nl80211_req_set_reg,
6091                 .policy = nl80211_policy,
6092                 .flags = GENL_ADMIN_PERM,
6093         },
6094         {
6095                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6096                 .doit = nl80211_get_mesh_config,
6097                 .policy = nl80211_policy,
6098                 /* can be retrieved by unprivileged users */
6099                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6100                                   NL80211_FLAG_NEED_RTNL,
6101         },
6102         {
6103                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6104                 .doit = nl80211_update_mesh_config,
6105                 .policy = nl80211_policy,
6106                 .flags = GENL_ADMIN_PERM,
6107                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6108                                   NL80211_FLAG_NEED_RTNL,
6109         },
6110         {
6111                 .cmd = NL80211_CMD_TRIGGER_SCAN,
6112                 .doit = nl80211_trigger_scan,
6113                 .policy = nl80211_policy,
6114                 .flags = GENL_ADMIN_PERM,
6115                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6116                                   NL80211_FLAG_NEED_RTNL,
6117         },
6118         {
6119                 .cmd = NL80211_CMD_GET_SCAN,
6120                 .policy = nl80211_policy,
6121                 .dumpit = nl80211_dump_scan,
6122         },
6123         {
6124                 .cmd = NL80211_CMD_START_SCHED_SCAN,
6125                 .doit = nl80211_start_sched_scan,
6126                 .policy = nl80211_policy,
6127                 .flags = GENL_ADMIN_PERM,
6128                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6129                                   NL80211_FLAG_NEED_RTNL,
6130         },
6131         {
6132                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6133                 .doit = nl80211_stop_sched_scan,
6134                 .policy = nl80211_policy,
6135                 .flags = GENL_ADMIN_PERM,
6136                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6137                                   NL80211_FLAG_NEED_RTNL,
6138         },
6139         {
6140                 .cmd = NL80211_CMD_AUTHENTICATE,
6141                 .doit = nl80211_authenticate,
6142                 .policy = nl80211_policy,
6143                 .flags = GENL_ADMIN_PERM,
6144                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6145                                   NL80211_FLAG_NEED_RTNL,
6146         },
6147         {
6148                 .cmd = NL80211_CMD_ASSOCIATE,
6149                 .doit = nl80211_associate,
6150                 .policy = nl80211_policy,
6151                 .flags = GENL_ADMIN_PERM,
6152                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6153                                   NL80211_FLAG_NEED_RTNL,
6154         },
6155         {
6156                 .cmd = NL80211_CMD_DEAUTHENTICATE,
6157                 .doit = nl80211_deauthenticate,
6158                 .policy = nl80211_policy,
6159                 .flags = GENL_ADMIN_PERM,
6160                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6161                                   NL80211_FLAG_NEED_RTNL,
6162         },
6163         {
6164                 .cmd = NL80211_CMD_DISASSOCIATE,
6165                 .doit = nl80211_disassociate,
6166                 .policy = nl80211_policy,
6167                 .flags = GENL_ADMIN_PERM,
6168                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6169                                   NL80211_FLAG_NEED_RTNL,
6170         },
6171         {
6172                 .cmd = NL80211_CMD_JOIN_IBSS,
6173                 .doit = nl80211_join_ibss,
6174                 .policy = nl80211_policy,
6175                 .flags = GENL_ADMIN_PERM,
6176                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6177                                   NL80211_FLAG_NEED_RTNL,
6178         },
6179         {
6180                 .cmd = NL80211_CMD_LEAVE_IBSS,
6181                 .doit = nl80211_leave_ibss,
6182                 .policy = nl80211_policy,
6183                 .flags = GENL_ADMIN_PERM,
6184                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6185                                   NL80211_FLAG_NEED_RTNL,
6186         },
6187 #ifdef CONFIG_NL80211_TESTMODE
6188         {
6189                 .cmd = NL80211_CMD_TESTMODE,
6190                 .doit = nl80211_testmode_do,
6191                 .dumpit = nl80211_testmode_dump,
6192                 .policy = nl80211_policy,
6193                 .flags = GENL_ADMIN_PERM,
6194                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6195                                   NL80211_FLAG_NEED_RTNL,
6196         },
6197 #endif
6198         {
6199                 .cmd = NL80211_CMD_CONNECT,
6200                 .doit = nl80211_connect,
6201                 .policy = nl80211_policy,
6202                 .flags = GENL_ADMIN_PERM,
6203                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6204                                   NL80211_FLAG_NEED_RTNL,
6205         },
6206         {
6207                 .cmd = NL80211_CMD_DISCONNECT,
6208                 .doit = nl80211_disconnect,
6209                 .policy = nl80211_policy,
6210                 .flags = GENL_ADMIN_PERM,
6211                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6212                                   NL80211_FLAG_NEED_RTNL,
6213         },
6214         {
6215                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6216                 .doit = nl80211_wiphy_netns,
6217                 .policy = nl80211_policy,
6218                 .flags = GENL_ADMIN_PERM,
6219                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6220                                   NL80211_FLAG_NEED_RTNL,
6221         },
6222         {
6223                 .cmd = NL80211_CMD_GET_SURVEY,
6224                 .policy = nl80211_policy,
6225                 .dumpit = nl80211_dump_survey,
6226         },
6227         {
6228                 .cmd = NL80211_CMD_SET_PMKSA,
6229                 .doit = nl80211_setdel_pmksa,
6230                 .policy = nl80211_policy,
6231                 .flags = GENL_ADMIN_PERM,
6232                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6233                                   NL80211_FLAG_NEED_RTNL,
6234         },
6235         {
6236                 .cmd = NL80211_CMD_DEL_PMKSA,
6237                 .doit = nl80211_setdel_pmksa,
6238                 .policy = nl80211_policy,
6239                 .flags = GENL_ADMIN_PERM,
6240                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6241                                   NL80211_FLAG_NEED_RTNL,
6242         },
6243         {
6244                 .cmd = NL80211_CMD_FLUSH_PMKSA,
6245                 .doit = nl80211_flush_pmksa,
6246                 .policy = nl80211_policy,
6247                 .flags = GENL_ADMIN_PERM,
6248                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6249                                   NL80211_FLAG_NEED_RTNL,
6250         },
6251         {
6252                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6253                 .doit = nl80211_remain_on_channel,
6254                 .policy = nl80211_policy,
6255                 .flags = GENL_ADMIN_PERM,
6256                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6257                                   NL80211_FLAG_NEED_RTNL,
6258         },
6259         {
6260                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6261                 .doit = nl80211_cancel_remain_on_channel,
6262                 .policy = nl80211_policy,
6263                 .flags = GENL_ADMIN_PERM,
6264                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6265                                   NL80211_FLAG_NEED_RTNL,
6266         },
6267         {
6268                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6269                 .doit = nl80211_set_tx_bitrate_mask,
6270                 .policy = nl80211_policy,
6271                 .flags = GENL_ADMIN_PERM,
6272                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6273                                   NL80211_FLAG_NEED_RTNL,
6274         },
6275         {
6276                 .cmd = NL80211_CMD_REGISTER_FRAME,
6277                 .doit = nl80211_register_mgmt,
6278                 .policy = nl80211_policy,
6279                 .flags = GENL_ADMIN_PERM,
6280                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6281                                   NL80211_FLAG_NEED_RTNL,
6282         },
6283         {
6284                 .cmd = NL80211_CMD_FRAME,
6285                 .doit = nl80211_tx_mgmt,
6286                 .policy = nl80211_policy,
6287                 .flags = GENL_ADMIN_PERM,
6288                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6289                                   NL80211_FLAG_NEED_RTNL,
6290         },
6291         {
6292                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6293                 .doit = nl80211_tx_mgmt_cancel_wait,
6294                 .policy = nl80211_policy,
6295                 .flags = GENL_ADMIN_PERM,
6296                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6297                                   NL80211_FLAG_NEED_RTNL,
6298         },
6299         {
6300                 .cmd = NL80211_CMD_SET_POWER_SAVE,
6301                 .doit = nl80211_set_power_save,
6302                 .policy = nl80211_policy,
6303                 .flags = GENL_ADMIN_PERM,
6304                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6305                                   NL80211_FLAG_NEED_RTNL,
6306         },
6307         {
6308                 .cmd = NL80211_CMD_GET_POWER_SAVE,
6309                 .doit = nl80211_get_power_save,
6310                 .policy = nl80211_policy,
6311                 /* can be retrieved by unprivileged users */
6312                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6313                                   NL80211_FLAG_NEED_RTNL,
6314         },
6315         {
6316                 .cmd = NL80211_CMD_SET_CQM,
6317                 .doit = nl80211_set_cqm,
6318                 .policy = nl80211_policy,
6319                 .flags = GENL_ADMIN_PERM,
6320                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6321                                   NL80211_FLAG_NEED_RTNL,
6322         },
6323         {
6324                 .cmd = NL80211_CMD_SET_CHANNEL,
6325                 .doit = nl80211_set_channel,
6326                 .policy = nl80211_policy,
6327                 .flags = GENL_ADMIN_PERM,
6328                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6329                                   NL80211_FLAG_NEED_RTNL,
6330         },
6331         {
6332                 .cmd = NL80211_CMD_SET_WDS_PEER,
6333                 .doit = nl80211_set_wds_peer,
6334                 .policy = nl80211_policy,
6335                 .flags = GENL_ADMIN_PERM,
6336                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6337                                   NL80211_FLAG_NEED_RTNL,
6338         },
6339         {
6340                 .cmd = NL80211_CMD_JOIN_MESH,
6341                 .doit = nl80211_join_mesh,
6342                 .policy = nl80211_policy,
6343                 .flags = GENL_ADMIN_PERM,
6344                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6345                                   NL80211_FLAG_NEED_RTNL,
6346         },
6347         {
6348                 .cmd = NL80211_CMD_LEAVE_MESH,
6349                 .doit = nl80211_leave_mesh,
6350                 .policy = nl80211_policy,
6351                 .flags = GENL_ADMIN_PERM,
6352                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6353                                   NL80211_FLAG_NEED_RTNL,
6354         },
6355         {
6356                 .cmd = NL80211_CMD_GET_WOWLAN,
6357                 .doit = nl80211_get_wowlan,
6358                 .policy = nl80211_policy,
6359                 /* can be retrieved by unprivileged users */
6360                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6361                                   NL80211_FLAG_NEED_RTNL,
6362         },
6363         {
6364                 .cmd = NL80211_CMD_SET_WOWLAN,
6365                 .doit = nl80211_set_wowlan,
6366                 .policy = nl80211_policy,
6367                 .flags = GENL_ADMIN_PERM,
6368                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6369                                   NL80211_FLAG_NEED_RTNL,
6370         },
6371         {
6372                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6373                 .doit = nl80211_set_rekey_data,
6374                 .policy = nl80211_policy,
6375                 .flags = GENL_ADMIN_PERM,
6376                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6377                                   NL80211_FLAG_NEED_RTNL,
6378         },
6379         {
6380                 .cmd = NL80211_CMD_TDLS_MGMT,
6381                 .doit = nl80211_tdls_mgmt,
6382                 .policy = nl80211_policy,
6383                 .flags = GENL_ADMIN_PERM,
6384                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6385                                   NL80211_FLAG_NEED_RTNL,
6386         },
6387         {
6388                 .cmd = NL80211_CMD_TDLS_OPER,
6389                 .doit = nl80211_tdls_oper,
6390                 .policy = nl80211_policy,
6391                 .flags = GENL_ADMIN_PERM,
6392                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6393                                   NL80211_FLAG_NEED_RTNL,
6394         },
6395 };
6396
6397 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6398         .name = "mlme",
6399 };
6400
6401 /* multicast groups */
6402 static struct genl_multicast_group nl80211_config_mcgrp = {
6403         .name = "config",
6404 };
6405 static struct genl_multicast_group nl80211_scan_mcgrp = {
6406         .name = "scan",
6407 };
6408 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6409         .name = "regulatory",
6410 };
6411
6412 /* notification functions */
6413
6414 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6415 {
6416         struct sk_buff *msg;
6417
6418         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6419         if (!msg)
6420                 return;
6421
6422         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6423                 nlmsg_free(msg);
6424                 return;
6425         }
6426
6427         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6428                                 nl80211_config_mcgrp.id, GFP_KERNEL);
6429 }
6430
6431 static int nl80211_add_scan_req(struct sk_buff *msg,
6432                                 struct cfg80211_registered_device *rdev)
6433 {
6434         struct cfg80211_scan_request *req = rdev->scan_req;
6435         struct nlattr *nest;
6436         int i;
6437
6438         ASSERT_RDEV_LOCK(rdev);
6439
6440         if (WARN_ON(!req))
6441                 return 0;
6442
6443         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6444         if (!nest)
6445                 goto nla_put_failure;
6446         for (i = 0; i < req->n_ssids; i++)
6447                 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6448         nla_nest_end(msg, nest);
6449
6450         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6451         if (!nest)
6452                 goto nla_put_failure;
6453         for (i = 0; i < req->n_channels; i++)
6454                 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6455         nla_nest_end(msg, nest);
6456
6457         if (req->ie)
6458                 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6459
6460         return 0;
6461  nla_put_failure:
6462         return -ENOBUFS;
6463 }
6464
6465 static int nl80211_send_scan_msg(struct sk_buff *msg,
6466                                  struct cfg80211_registered_device *rdev,
6467                                  struct net_device *netdev,
6468                                  u32 pid, u32 seq, int flags,
6469                                  u32 cmd)
6470 {
6471         void *hdr;
6472
6473         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6474         if (!hdr)
6475                 return -1;
6476
6477         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6478         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6479
6480         /* ignore errors and send incomplete event anyway */
6481         nl80211_add_scan_req(msg, rdev);
6482
6483         return genlmsg_end(msg, hdr);
6484
6485  nla_put_failure:
6486         genlmsg_cancel(msg, hdr);
6487         return -EMSGSIZE;
6488 }
6489
6490 static int
6491 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6492                             struct cfg80211_registered_device *rdev,
6493                             struct net_device *netdev,
6494                             u32 pid, u32 seq, int flags, u32 cmd)
6495 {
6496         void *hdr;
6497
6498         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6499         if (!hdr)
6500                 return -1;
6501
6502         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6503         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6504
6505         return genlmsg_end(msg, hdr);
6506
6507  nla_put_failure:
6508         genlmsg_cancel(msg, hdr);
6509         return -EMSGSIZE;
6510 }
6511
6512 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6513                              struct net_device *netdev)
6514 {
6515         struct sk_buff *msg;
6516
6517         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6518         if (!msg)
6519                 return;
6520
6521         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6522                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
6523                 nlmsg_free(msg);
6524                 return;
6525         }
6526
6527         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6528                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6529 }
6530
6531 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6532                             struct net_device *netdev)
6533 {
6534         struct sk_buff *msg;
6535
6536         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6537         if (!msg)
6538                 return;
6539
6540         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6541                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6542                 nlmsg_free(msg);
6543                 return;
6544         }
6545
6546         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6547                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6548 }
6549
6550 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6551                                struct net_device *netdev)
6552 {
6553         struct sk_buff *msg;
6554
6555         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6556         if (!msg)
6557                 return;
6558
6559         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6560                                   NL80211_CMD_SCAN_ABORTED) < 0) {
6561                 nlmsg_free(msg);
6562                 return;
6563         }
6564
6565         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6566                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6567 }
6568
6569 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6570                                      struct net_device *netdev)
6571 {
6572         struct sk_buff *msg;
6573
6574         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6575         if (!msg)
6576                 return;
6577
6578         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6579                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6580                 nlmsg_free(msg);
6581                 return;
6582         }
6583
6584         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6585                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6586 }
6587
6588 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6589                              struct net_device *netdev, u32 cmd)
6590 {
6591         struct sk_buff *msg;
6592
6593         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6594         if (!msg)
6595                 return;
6596
6597         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6598                 nlmsg_free(msg);
6599                 return;
6600         }
6601
6602         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6603                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6604 }
6605
6606 /*
6607  * This can happen on global regulatory changes or device specific settings
6608  * based on custom world regulatory domains.
6609  */
6610 void nl80211_send_reg_change_event(struct regulatory_request *request)
6611 {
6612         struct sk_buff *msg;
6613         void *hdr;
6614
6615         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6616         if (!msg)
6617                 return;
6618
6619         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6620         if (!hdr) {
6621                 nlmsg_free(msg);
6622                 return;
6623         }
6624
6625         /* Userspace can always count this one always being set */
6626         NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6627
6628         if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6629                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6630                            NL80211_REGDOM_TYPE_WORLD);
6631         else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6632                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6633                            NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6634         else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6635                  request->intersect)
6636                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6637                            NL80211_REGDOM_TYPE_INTERSECTION);
6638         else {
6639                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6640                            NL80211_REGDOM_TYPE_COUNTRY);
6641                 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6642         }
6643
6644         if (wiphy_idx_valid(request->wiphy_idx))
6645                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6646
6647         if (genlmsg_end(msg, hdr) < 0) {
6648                 nlmsg_free(msg);
6649                 return;
6650         }
6651
6652         rcu_read_lock();
6653         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6654                                 GFP_ATOMIC);
6655         rcu_read_unlock();
6656
6657         return;
6658
6659 nla_put_failure:
6660         genlmsg_cancel(msg, hdr);
6661         nlmsg_free(msg);
6662 }
6663
6664 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6665                                     struct net_device *netdev,
6666                                     const u8 *buf, size_t len,
6667                                     enum nl80211_commands cmd, gfp_t gfp)
6668 {
6669         struct sk_buff *msg;
6670         void *hdr;
6671
6672         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6673         if (!msg)
6674                 return;
6675
6676         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6677         if (!hdr) {
6678                 nlmsg_free(msg);
6679                 return;
6680         }
6681
6682         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6683         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6684         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6685
6686         if (genlmsg_end(msg, hdr) < 0) {
6687                 nlmsg_free(msg);
6688                 return;
6689         }
6690
6691         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6692                                 nl80211_mlme_mcgrp.id, gfp);
6693         return;
6694
6695  nla_put_failure:
6696         genlmsg_cancel(msg, hdr);
6697         nlmsg_free(msg);
6698 }
6699
6700 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6701                           struct net_device *netdev, const u8 *buf,
6702                           size_t len, gfp_t gfp)
6703 {
6704         nl80211_send_mlme_event(rdev, netdev, buf, len,
6705                                 NL80211_CMD_AUTHENTICATE, gfp);
6706 }
6707
6708 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6709                            struct net_device *netdev, const u8 *buf,
6710                            size_t len, gfp_t gfp)
6711 {
6712         nl80211_send_mlme_event(rdev, netdev, buf, len,
6713                                 NL80211_CMD_ASSOCIATE, gfp);
6714 }
6715
6716 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6717                          struct net_device *netdev, const u8 *buf,
6718                          size_t len, gfp_t gfp)
6719 {
6720         nl80211_send_mlme_event(rdev, netdev, buf, len,
6721                                 NL80211_CMD_DEAUTHENTICATE, gfp);
6722 }
6723
6724 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6725                            struct net_device *netdev, const u8 *buf,
6726                            size_t len, gfp_t gfp)
6727 {
6728         nl80211_send_mlme_event(rdev, netdev, buf, len,
6729                                 NL80211_CMD_DISASSOCIATE, gfp);
6730 }
6731
6732 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6733                                 struct net_device *netdev, const u8 *buf,
6734                                 size_t len, gfp_t gfp)
6735 {
6736         nl80211_send_mlme_event(rdev, netdev, buf, len,
6737                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6738 }
6739
6740 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6741                                   struct net_device *netdev, const u8 *buf,
6742                                   size_t len, gfp_t gfp)
6743 {
6744         nl80211_send_mlme_event(rdev, netdev, buf, len,
6745                                 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6746 }
6747
6748 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6749                                       struct net_device *netdev, int cmd,
6750                                       const u8 *addr, gfp_t gfp)
6751 {
6752         struct sk_buff *msg;
6753         void *hdr;
6754
6755         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6756         if (!msg)
6757                 return;
6758
6759         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6760         if (!hdr) {
6761                 nlmsg_free(msg);
6762                 return;
6763         }
6764
6765         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6766         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6767         NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6768         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6769
6770         if (genlmsg_end(msg, hdr) < 0) {
6771                 nlmsg_free(msg);
6772                 return;
6773         }
6774
6775         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6776                                 nl80211_mlme_mcgrp.id, gfp);
6777         return;
6778
6779  nla_put_failure:
6780         genlmsg_cancel(msg, hdr);
6781         nlmsg_free(msg);
6782 }
6783
6784 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6785                                struct net_device *netdev, const u8 *addr,
6786                                gfp_t gfp)
6787 {
6788         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6789                                   addr, gfp);
6790 }
6791
6792 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6793                                 struct net_device *netdev, const u8 *addr,
6794                                 gfp_t gfp)
6795 {
6796         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6797                                   addr, gfp);
6798 }
6799
6800 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6801                                  struct net_device *netdev, const u8 *bssid,
6802                                  const u8 *req_ie, size_t req_ie_len,
6803                                  const u8 *resp_ie, size_t resp_ie_len,
6804                                  u16 status, gfp_t gfp)
6805 {
6806         struct sk_buff *msg;
6807         void *hdr;
6808
6809         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6810         if (!msg)
6811                 return;
6812
6813         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6814         if (!hdr) {
6815                 nlmsg_free(msg);
6816                 return;
6817         }
6818
6819         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6820         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6821         if (bssid)
6822                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6823         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6824         if (req_ie)
6825                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6826         if (resp_ie)
6827                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6828
6829         if (genlmsg_end(msg, hdr) < 0) {
6830                 nlmsg_free(msg);
6831                 return;
6832         }
6833
6834         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6835                                 nl80211_mlme_mcgrp.id, gfp);
6836         return;
6837
6838  nla_put_failure:
6839         genlmsg_cancel(msg, hdr);
6840         nlmsg_free(msg);
6841
6842 }
6843
6844 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6845                          struct net_device *netdev, const u8 *bssid,
6846                          const u8 *req_ie, size_t req_ie_len,
6847                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6848 {
6849         struct sk_buff *msg;
6850         void *hdr;
6851
6852         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6853         if (!msg)
6854                 return;
6855
6856         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6857         if (!hdr) {
6858                 nlmsg_free(msg);
6859                 return;
6860         }
6861
6862         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6863         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6864         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6865         if (req_ie)
6866                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6867         if (resp_ie)
6868                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6869
6870         if (genlmsg_end(msg, hdr) < 0) {
6871                 nlmsg_free(msg);
6872                 return;
6873         }
6874
6875         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6876                                 nl80211_mlme_mcgrp.id, gfp);
6877         return;
6878
6879  nla_put_failure:
6880         genlmsg_cancel(msg, hdr);
6881         nlmsg_free(msg);
6882
6883 }
6884
6885 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6886                                struct net_device *netdev, u16 reason,
6887                                const u8 *ie, size_t ie_len, bool from_ap)
6888 {
6889         struct sk_buff *msg;
6890         void *hdr;
6891
6892         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6893         if (!msg)
6894                 return;
6895
6896         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6897         if (!hdr) {
6898                 nlmsg_free(msg);
6899                 return;
6900         }
6901
6902         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6903         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6904         if (from_ap && reason)
6905                 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6906         if (from_ap)
6907                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6908         if (ie)
6909                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6910
6911         if (genlmsg_end(msg, hdr) < 0) {
6912                 nlmsg_free(msg);
6913                 return;
6914         }
6915
6916         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6917                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6918         return;
6919
6920  nla_put_failure:
6921         genlmsg_cancel(msg, hdr);
6922         nlmsg_free(msg);
6923
6924 }
6925
6926 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6927                              struct net_device *netdev, const u8 *bssid,
6928                              gfp_t gfp)
6929 {
6930         struct sk_buff *msg;
6931         void *hdr;
6932
6933         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6934         if (!msg)
6935                 return;
6936
6937         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6938         if (!hdr) {
6939                 nlmsg_free(msg);
6940                 return;
6941         }
6942
6943         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6944         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6945         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6946
6947         if (genlmsg_end(msg, hdr) < 0) {
6948                 nlmsg_free(msg);
6949                 return;
6950         }
6951
6952         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6953                                 nl80211_mlme_mcgrp.id, gfp);
6954         return;
6955
6956  nla_put_failure:
6957         genlmsg_cancel(msg, hdr);
6958         nlmsg_free(msg);
6959 }
6960
6961 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6962                 struct net_device *netdev,
6963                 const u8 *macaddr, const u8* ie, u8 ie_len,
6964                 gfp_t gfp)
6965 {
6966         struct sk_buff *msg;
6967         void *hdr;
6968
6969         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6970         if (!msg)
6971                 return;
6972
6973         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6974         if (!hdr) {
6975                 nlmsg_free(msg);
6976                 return;
6977         }
6978
6979         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6980         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6981         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6982         if (ie_len && ie)
6983                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6984
6985         if (genlmsg_end(msg, hdr) < 0) {
6986                 nlmsg_free(msg);
6987                 return;
6988         }
6989
6990         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6991                                 nl80211_mlme_mcgrp.id, gfp);
6992         return;
6993
6994  nla_put_failure:
6995         genlmsg_cancel(msg, hdr);
6996         nlmsg_free(msg);
6997 }
6998
6999 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7000                                  struct net_device *netdev, const u8 *addr,
7001                                  enum nl80211_key_type key_type, int key_id,
7002                                  const u8 *tsc, gfp_t gfp)
7003 {
7004         struct sk_buff *msg;
7005         void *hdr;
7006
7007         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7008         if (!msg)
7009                 return;
7010
7011         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7012         if (!hdr) {
7013                 nlmsg_free(msg);
7014                 return;
7015         }
7016
7017         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7018         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7019         if (addr)
7020                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7021         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7022         if (key_id != -1)
7023                 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7024         if (tsc)
7025                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7026
7027         if (genlmsg_end(msg, hdr) < 0) {
7028                 nlmsg_free(msg);
7029                 return;
7030         }
7031
7032         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7033                                 nl80211_mlme_mcgrp.id, gfp);
7034         return;
7035
7036  nla_put_failure:
7037         genlmsg_cancel(msg, hdr);
7038         nlmsg_free(msg);
7039 }
7040
7041 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7042                                     struct ieee80211_channel *channel_before,
7043                                     struct ieee80211_channel *channel_after)
7044 {
7045         struct sk_buff *msg;
7046         void *hdr;
7047         struct nlattr *nl_freq;
7048
7049         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7050         if (!msg)
7051                 return;
7052
7053         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7054         if (!hdr) {
7055                 nlmsg_free(msg);
7056                 return;
7057         }
7058
7059         /*
7060          * Since we are applying the beacon hint to a wiphy we know its
7061          * wiphy_idx is valid
7062          */
7063         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7064
7065         /* Before */
7066         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7067         if (!nl_freq)
7068                 goto nla_put_failure;
7069         if (nl80211_msg_put_channel(msg, channel_before))
7070                 goto nla_put_failure;
7071         nla_nest_end(msg, nl_freq);
7072
7073         /* After */
7074         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7075         if (!nl_freq)
7076                 goto nla_put_failure;
7077         if (nl80211_msg_put_channel(msg, channel_after))
7078                 goto nla_put_failure;
7079         nla_nest_end(msg, nl_freq);
7080
7081         if (genlmsg_end(msg, hdr) < 0) {
7082                 nlmsg_free(msg);
7083                 return;
7084         }
7085
7086         rcu_read_lock();
7087         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7088                                 GFP_ATOMIC);
7089         rcu_read_unlock();
7090
7091         return;
7092
7093 nla_put_failure:
7094         genlmsg_cancel(msg, hdr);
7095         nlmsg_free(msg);
7096 }
7097
7098 static void nl80211_send_remain_on_chan_event(
7099         int cmd, struct cfg80211_registered_device *rdev,
7100         struct net_device *netdev, u64 cookie,
7101         struct ieee80211_channel *chan,
7102         enum nl80211_channel_type channel_type,
7103         unsigned int duration, gfp_t gfp)
7104 {
7105         struct sk_buff *msg;
7106         void *hdr;
7107
7108         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7109         if (!msg)
7110                 return;
7111
7112         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7113         if (!hdr) {
7114                 nlmsg_free(msg);
7115                 return;
7116         }
7117
7118         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7119         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7120         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7121         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7122         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7123
7124         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7125                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7126
7127         if (genlmsg_end(msg, hdr) < 0) {
7128                 nlmsg_free(msg);
7129                 return;
7130         }
7131
7132         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7133                                 nl80211_mlme_mcgrp.id, gfp);
7134         return;
7135
7136  nla_put_failure:
7137         genlmsg_cancel(msg, hdr);
7138         nlmsg_free(msg);
7139 }
7140
7141 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7142                                     struct net_device *netdev, u64 cookie,
7143                                     struct ieee80211_channel *chan,
7144                                     enum nl80211_channel_type channel_type,
7145                                     unsigned int duration, gfp_t gfp)
7146 {
7147         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7148                                           rdev, netdev, cookie, chan,
7149                                           channel_type, duration, gfp);
7150 }
7151
7152 void nl80211_send_remain_on_channel_cancel(
7153         struct cfg80211_registered_device *rdev, struct net_device *netdev,
7154         u64 cookie, struct ieee80211_channel *chan,
7155         enum nl80211_channel_type channel_type, gfp_t gfp)
7156 {
7157         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7158                                           rdev, netdev, cookie, chan,
7159                                           channel_type, 0, gfp);
7160 }
7161
7162 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7163                             struct net_device *dev, const u8 *mac_addr,
7164                             struct station_info *sinfo, gfp_t gfp)
7165 {
7166         struct sk_buff *msg;
7167
7168         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7169         if (!msg)
7170                 return;
7171
7172         if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7173                 nlmsg_free(msg);
7174                 return;
7175         }
7176
7177         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7178                                 nl80211_mlme_mcgrp.id, gfp);
7179 }
7180
7181 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7182                                 struct net_device *dev, const u8 *mac_addr,
7183                                 gfp_t gfp)
7184 {
7185         struct sk_buff *msg;
7186         void *hdr;
7187
7188         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7189         if (!msg)
7190                 return;
7191
7192         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7193         if (!hdr) {
7194                 nlmsg_free(msg);
7195                 return;
7196         }
7197
7198         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7199         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7200
7201         if (genlmsg_end(msg, hdr) < 0) {
7202                 nlmsg_free(msg);
7203                 return;
7204         }
7205
7206         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7207                                 nl80211_mlme_mcgrp.id, gfp);
7208         return;
7209
7210  nla_put_failure:
7211         genlmsg_cancel(msg, hdr);
7212         nlmsg_free(msg);
7213 }
7214
7215 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7216                       struct net_device *netdev, u32 nlpid,
7217                       int freq, const u8 *buf, size_t len, gfp_t gfp)
7218 {
7219         struct sk_buff *msg;
7220         void *hdr;
7221         int err;
7222
7223         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7224         if (!msg)
7225                 return -ENOMEM;
7226
7227         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7228         if (!hdr) {
7229                 nlmsg_free(msg);
7230                 return -ENOMEM;
7231         }
7232
7233         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7234         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7235         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7236         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7237
7238         err = genlmsg_end(msg, hdr);
7239         if (err < 0) {
7240                 nlmsg_free(msg);
7241                 return err;
7242         }
7243
7244         err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7245         if (err < 0)
7246                 return err;
7247         return 0;
7248
7249  nla_put_failure:
7250         genlmsg_cancel(msg, hdr);
7251         nlmsg_free(msg);
7252         return -ENOBUFS;
7253 }
7254
7255 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7256                                  struct net_device *netdev, u64 cookie,
7257                                  const u8 *buf, size_t len, bool ack,
7258                                  gfp_t gfp)
7259 {
7260         struct sk_buff *msg;
7261         void *hdr;
7262
7263         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7264         if (!msg)
7265                 return;
7266
7267         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7268         if (!hdr) {
7269                 nlmsg_free(msg);
7270                 return;
7271         }
7272
7273         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7274         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7275         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7276         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7277         if (ack)
7278                 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7279
7280         if (genlmsg_end(msg, hdr) < 0) {
7281                 nlmsg_free(msg);
7282                 return;
7283         }
7284
7285         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7286         return;
7287
7288  nla_put_failure:
7289         genlmsg_cancel(msg, hdr);
7290         nlmsg_free(msg);
7291 }
7292
7293 void
7294 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7295                              struct net_device *netdev,
7296                              enum nl80211_cqm_rssi_threshold_event rssi_event,
7297                              gfp_t gfp)
7298 {
7299         struct sk_buff *msg;
7300         struct nlattr *pinfoattr;
7301         void *hdr;
7302
7303         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7304         if (!msg)
7305                 return;
7306
7307         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7308         if (!hdr) {
7309                 nlmsg_free(msg);
7310                 return;
7311         }
7312
7313         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7314         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7315
7316         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7317         if (!pinfoattr)
7318                 goto nla_put_failure;
7319
7320         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7321                     rssi_event);
7322
7323         nla_nest_end(msg, pinfoattr);
7324
7325         if (genlmsg_end(msg, hdr) < 0) {
7326                 nlmsg_free(msg);
7327                 return;
7328         }
7329
7330         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7331                                 nl80211_mlme_mcgrp.id, gfp);
7332         return;
7333
7334  nla_put_failure:
7335         genlmsg_cancel(msg, hdr);
7336         nlmsg_free(msg);
7337 }
7338
7339 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7340                               struct net_device *netdev, const u8 *bssid,
7341                               const u8 *replay_ctr, gfp_t gfp)
7342 {
7343         struct sk_buff *msg;
7344         struct nlattr *rekey_attr;
7345         void *hdr;
7346
7347         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7348         if (!msg)
7349                 return;
7350
7351         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7352         if (!hdr) {
7353                 nlmsg_free(msg);
7354                 return;
7355         }
7356
7357         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7358         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7359         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7360
7361         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7362         if (!rekey_attr)
7363                 goto nla_put_failure;
7364
7365         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7366                 NL80211_REPLAY_CTR_LEN, replay_ctr);
7367
7368         nla_nest_end(msg, rekey_attr);
7369
7370         if (genlmsg_end(msg, hdr) < 0) {
7371                 nlmsg_free(msg);
7372                 return;
7373         }
7374
7375         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7376                                 nl80211_mlme_mcgrp.id, gfp);
7377         return;
7378
7379  nla_put_failure:
7380         genlmsg_cancel(msg, hdr);
7381         nlmsg_free(msg);
7382 }
7383
7384 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7385                                     struct net_device *netdev, int index,
7386                                     const u8 *bssid, bool preauth, gfp_t gfp)
7387 {
7388         struct sk_buff *msg;
7389         struct nlattr *attr;
7390         void *hdr;
7391
7392         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7393         if (!msg)
7394                 return;
7395
7396         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7397         if (!hdr) {
7398                 nlmsg_free(msg);
7399                 return;
7400         }
7401
7402         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7403         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7404
7405         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7406         if (!attr)
7407                 goto nla_put_failure;
7408
7409         NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7410         NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7411         if (preauth)
7412                 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7413
7414         nla_nest_end(msg, attr);
7415
7416         if (genlmsg_end(msg, hdr) < 0) {
7417                 nlmsg_free(msg);
7418                 return;
7419         }
7420
7421         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7422                                 nl80211_mlme_mcgrp.id, gfp);
7423         return;
7424
7425  nla_put_failure:
7426         genlmsg_cancel(msg, hdr);
7427         nlmsg_free(msg);
7428 }
7429
7430 void
7431 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7432                                 struct net_device *netdev, const u8 *peer,
7433                                 u32 num_packets, gfp_t gfp)
7434 {
7435         struct sk_buff *msg;
7436         struct nlattr *pinfoattr;
7437         void *hdr;
7438
7439         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7440         if (!msg)
7441                 return;
7442
7443         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7444         if (!hdr) {
7445                 nlmsg_free(msg);
7446                 return;
7447         }
7448
7449         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7450         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7451         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7452
7453         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7454         if (!pinfoattr)
7455                 goto nla_put_failure;
7456
7457         NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7458
7459         nla_nest_end(msg, pinfoattr);
7460
7461         if (genlmsg_end(msg, hdr) < 0) {
7462                 nlmsg_free(msg);
7463                 return;
7464         }
7465
7466         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7467                                 nl80211_mlme_mcgrp.id, gfp);
7468         return;
7469
7470  nla_put_failure:
7471         genlmsg_cancel(msg, hdr);
7472         nlmsg_free(msg);
7473 }
7474
7475 static int nl80211_netlink_notify(struct notifier_block * nb,
7476                                   unsigned long state,
7477                                   void *_notify)
7478 {
7479         struct netlink_notify *notify = _notify;
7480         struct cfg80211_registered_device *rdev;
7481         struct wireless_dev *wdev;
7482
7483         if (state != NETLINK_URELEASE)
7484                 return NOTIFY_DONE;
7485
7486         rcu_read_lock();
7487
7488         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7489                 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7490                         cfg80211_mlme_unregister_socket(wdev, notify->pid);
7491
7492         rcu_read_unlock();
7493
7494         return NOTIFY_DONE;
7495 }
7496
7497 static struct notifier_block nl80211_netlink_notifier = {
7498         .notifier_call = nl80211_netlink_notify,
7499 };
7500
7501 /* initialisation/exit functions */
7502
7503 int nl80211_init(void)
7504 {
7505         int err;
7506
7507         err = genl_register_family_with_ops(&nl80211_fam,
7508                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7509         if (err)
7510                 return err;
7511
7512         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7513         if (err)
7514                 goto err_out;
7515
7516         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7517         if (err)
7518                 goto err_out;
7519
7520         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7521         if (err)
7522                 goto err_out;
7523
7524         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7525         if (err)
7526                 goto err_out;
7527
7528 #ifdef CONFIG_NL80211_TESTMODE
7529         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7530         if (err)
7531                 goto err_out;
7532 #endif
7533
7534         err = netlink_register_notifier(&nl80211_netlink_notifier);
7535         if (err)
7536                 goto err_out;
7537
7538         return 0;
7539  err_out:
7540         genl_unregister_family(&nl80211_fam);
7541         return err;
7542 }
7543
7544 void nl80211_exit(void)
7545 {
7546         netlink_unregister_notifier(&nl80211_netlink_notifier);
7547         genl_unregister_family(&nl80211_fam);
7548 }