net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  */
   7
   8 #include <linux/if.h>
   9 #include <linux/module.h>
  10 #include <linux/err.h>
  11 #include <linux/slab.h>
  12 #include <linux/list.h>
  13 #include <linux/if_ether.h>
  14 #include <linux/ieee80211.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/rtnetlink.h>
  17 #include <linux/netlink.h>
  18 #include <linux/etherdevice.h>
  19 #include <net/net_namespace.h>
  20 #include <net/genetlink.h>
  21 #include <net/cfg80211.h>
  22 #include <net/sock.h>
  23 #include <net/inet_connection_sock.h>
  24 #include "core.h"
  25 #include "nl80211.h"
  26 #include "reg.h"
  27 #include "rdev-ops.h"
  28
  29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  30                                    struct genl_info *info,
  31                                    struct cfg80211_crypto_settings *settings,
  32                                    int cipher_limit);
  33
  34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  35                             struct genl_info *info);
  36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  37                               struct genl_info *info);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam = {
  41         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  42         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  43         .hdrsize = 0,                   /* no private header */
  44         .version = 1,                   /* no particular meaning now */
  45         .maxattr = NL80211_ATTR_MAX,
  46         .netnsok = true,
  47         .pre_doit = nl80211_pre_doit,
  48         .post_doit = nl80211_post_doit,
  49 };
  50
  51 /* multicast groups */
  52 enum nl80211_multicast_groups {
  53         NL80211_MCGRP_CONFIG,
  54         NL80211_MCGRP_SCAN,
  55         NL80211_MCGRP_REGULATORY,
  56         NL80211_MCGRP_MLME,
  57         NL80211_MCGRP_VENDOR,
  58         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  59 };
  60
  61 static const struct genl_multicast_group nl80211_mcgrps[] = {
  62         [NL80211_MCGRP_CONFIG] = { .name = "config", },
  63         [NL80211_MCGRP_SCAN] = { .name = "scan", },
  64         [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
  65         [NL80211_MCGRP_MLME] = { .name = "mlme", },
  66         [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
  69 #endif
  70 };
  71
  72 /* returns ERR_PTR values */
  73 static struct wireless_dev *
  74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  75 {
  76         struct cfg80211_registered_device *rdev;
  77         struct wireless_dev *result = NULL;
  78         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  79         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  80         u64 wdev_id;
  81         int wiphy_idx = -1;
  82         int ifidx = -1;
  83
  84         ASSERT_RTNL();
  85
  86         if (!have_ifidx && !have_wdev_id)
  87                 return ERR_PTR(-EINVAL);
  88
  89         if (have_ifidx)
  90                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  91         if (have_wdev_id) {
  92                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  93                 wiphy_idx = wdev_id >> 32;
  94         }
  95
  96         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  97                 struct wireless_dev *wdev;
  98
  99                 if (wiphy_net(&rdev->wiphy) != netns)
 100                         continue;
 101
 102                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 103                         continue;
 104
 105                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 106                         if (have_ifidx && wdev->netdev &&
 107                             wdev->netdev->ifindex == ifidx) {
 108                                 result = wdev;
 109                                 break;
 110                         }
 111                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 112                                 result = wdev;
 113                                 break;
 114                         }
 115                 }
 116
 117                 if (result)
 118                         break;
 119         }
 120
 121         if (result)
 122                 return result;
 123         return ERR_PTR(-ENODEV);
 124 }
 125
 126 static struct cfg80211_registered_device *
 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 128 {
 129         struct cfg80211_registered_device *rdev = NULL, *tmp;
 130         struct net_device *netdev;
 131
 132         ASSERT_RTNL();
 133
 134         if (!attrs[NL80211_ATTR_WIPHY] &&
 135             !attrs[NL80211_ATTR_IFINDEX] &&
 136             !attrs[NL80211_ATTR_WDEV])
 137                 return ERR_PTR(-EINVAL);
 138
 139         if (attrs[NL80211_ATTR_WIPHY])
 140                 rdev = cfg80211_rdev_by_wiphy_idx(
 141                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 142
 143         if (attrs[NL80211_ATTR_WDEV]) {
 144                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 145                 struct wireless_dev *wdev;
 146                 bool found = false;
 147
 148                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 149                 if (tmp) {
 150                         /* make sure wdev exists */
 151                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 152                                 if (wdev->identifier != (u32)wdev_id)
 153                                         continue;
 154                                 found = true;
 155                                 break;
 156                         }
 157
 158                         if (!found)
 159                                 tmp = NULL;
 160
 161                         if (rdev && tmp != rdev)
 162                                 return ERR_PTR(-EINVAL);
 163                         rdev = tmp;
 164                 }
 165         }
 166
 167         if (attrs[NL80211_ATTR_IFINDEX]) {
 168                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 169                 netdev = __dev_get_by_index(netns, ifindex);
 170                 if (netdev) {
 171                         if (netdev->ieee80211_ptr)
 172                                 tmp = wiphy_to_rdev(
 173                                         netdev->ieee80211_ptr->wiphy);
 174                         else
 175                                 tmp = NULL;
 176
 177                         /* not wireless device -- return error */
 178                         if (!tmp)
 179                                 return ERR_PTR(-EINVAL);
 180
 181                         /* mismatch -- return error */
 182                         if (rdev && tmp != rdev)
 183                                 return ERR_PTR(-EINVAL);
 184
 185                         rdev = tmp;
 186                 }
 187         }
 188
 189         if (!rdev)
 190                 return ERR_PTR(-ENODEV);
 191
 192         if (netns != wiphy_net(&rdev->wiphy))
 193                 return ERR_PTR(-ENODEV);
 194
 195         return rdev;
 196 }
 197
 198 /*
 199  * This function returns a pointer to the driver
 200  * that the genl_info item that is passed refers to.
 201  *
 202  * The result of this can be a PTR_ERR and hence must
 203  * be checked with IS_ERR() for errors.
 204  */
 205 static struct cfg80211_registered_device *
 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 207 {
 208         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 209 }
 210
 211 /* policy for the attributes */
 212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 213         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 214         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 215                                       .len = 20-1 },
 216         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 217
 218         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 223
 224         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 226         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 229         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 230
 231         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 232         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 233         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 234
 235         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 236         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 237
 238         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 239         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 240                                     .len = WLAN_MAX_KEY_LEN },
 241         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 242         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 243         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 244         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 245         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 246
 247         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 248         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 249         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 257                                                .len = NL80211_MAX_SUPP_RATES },
 258         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 259         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 260         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 261         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 262                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 263         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 264
 265         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 266         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 267
 268         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 270         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 272                                            .len = NL80211_MAX_SUPP_RATES },
 273         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 274
 275         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 277
 278         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 279
 280         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 281         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 282                               .len = IEEE80211_MAX_DATA_LEN },
 283         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 284         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 285
 286         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 287                                 .len = IEEE80211_MAX_SSID_LEN },
 288         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 289         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 293         [NL80211_ATTR_STA_FLAGS2] = {
 294                 .len = sizeof(struct nl80211_sta_flag_update),
 295         },
 296         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 300         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 302         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 303         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 304         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 305                                  .len = WLAN_PMKID_LEN },
 306         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 307         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 308         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 309         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 310                                  .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 312         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 313         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 317         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 318         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 319         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 320         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 322         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 323         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 324         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 326         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 327         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 329         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 330         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 336         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 339         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 342         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 345                                       .len = IEEE80211_MAX_DATA_LEN },
 346         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 347         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 348         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 349                 .len = NL80211_HT_CAPABILITY_LEN
 350         },
 351         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 352         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 353         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 354         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 355         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 356         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 357         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 358         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 359         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 360         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 361         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 362         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 363         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 364         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 365         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 366         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 368                 .len = NL80211_VHT_CAPABILITY_LEN,
 369         },
 370         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 372                                   .len = IEEE80211_MAX_DATA_LEN },
 373         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 374         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 375         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 376         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 377         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 383         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 384         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 385         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 387                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 388         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 390         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 392         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 393         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 395         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 396         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 397         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 398         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 399         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 400 };
 401
 402 /* policy for the key attributes */
 403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 404         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 405         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 406         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 407         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 408         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 409         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 410         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 411         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 412 };
 413
 414 /* policy for the key default flags */
 415 static const struct nla_policy
 416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 417         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 418         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 419 };
 420
 421 /* policy for WoWLAN attributes */
 422 static const struct nla_policy
 423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 424         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 425         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 426         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 427         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 428         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 433         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 434 };
 435
 436 static const struct nla_policy
 437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 438         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 439         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 440         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 441         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 442         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 443         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 444         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 445                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 446         },
 447         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 448                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 449         },
 450         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 451         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 452         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 453 };
 454
 455 /* policy for coalesce rule attributes */
 456 static const struct nla_policy
 457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 458         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 459         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 460         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 461 };
 462
 463 /* policy for GTK rekey offload attributes */
 464 static const struct nla_policy
 465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 466         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 467         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 468         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 469 };
 470
 471 static const struct nla_policy
 472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 473         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 474                                                  .len = IEEE80211_MAX_SSID_LEN },
 475         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 476 };
 477
 478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 479                                      struct netlink_callback *cb,
 480                                      struct cfg80211_registered_device **rdev,
 481                                      struct wireless_dev **wdev)
 482 {
 483         int err;
 484
 485         rtnl_lock();
 486
 487         if (!cb->args[0]) {
 488                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 489                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 490                                   nl80211_policy);
 491                 if (err)
 492                         goto out_unlock;
 493
 494                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 495                                                    nl80211_fam.attrbuf);
 496                 if (IS_ERR(*wdev)) {
 497                         err = PTR_ERR(*wdev);
 498                         goto out_unlock;
 499                 }
 500                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 501                 /* 0 is the first index - add 1 to parse only once */
 502                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 503                 cb->args[1] = (*wdev)->identifier;
 504         } else {
 505                 /* subtract the 1 again here */
 506                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 507                 struct wireless_dev *tmp;
 508
 509                 if (!wiphy) {
 510                         err = -ENODEV;
 511                         goto out_unlock;
 512                 }
 513                 *rdev = wiphy_to_rdev(wiphy);
 514                 *wdev = NULL;
 515
 516                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 517                         if (tmp->identifier == cb->args[1]) {
 518                                 *wdev = tmp;
 519                                 break;
 520                         }
 521                 }
 522
 523                 if (!*wdev) {
 524                         err = -ENODEV;
 525                         goto out_unlock;
 526                 }
 527         }
 528
 529         return 0;
 530  out_unlock:
 531         rtnl_unlock();
 532         return err;
 533 }
 534
 535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 536 {
 537         rtnl_unlock();
 538 }
 539
 540 /* IE validation */
 541 static bool is_valid_ie_attr(const struct nlattr *attr)
 542 {
 543         const u8 *pos;
 544         int len;
 545
 546         if (!attr)
 547                 return true;
 548
 549         pos = nla_data(attr);
 550         len = nla_len(attr);
 551
 552         while (len) {
 553                 u8 elemlen;
 554
 555                 if (len < 2)
 556                         return false;
 557                 len -= 2;
 558
 559                 elemlen = pos[1];
 560                 if (elemlen > len)
 561                         return false;
 562
 563                 len -= elemlen;
 564                 pos += 2 + elemlen;
 565         }
 566
 567         return true;
 568 }
 569
 570 /* message building helper */
 571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 572                                    int flags, u8 cmd)
 573 {
 574         /* since there is no private header just add the generic one */
 575         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 576 }
 577
 578 static int nl80211_msg_put_channel(struct sk_buff *msg,
 579                                    struct ieee80211_channel *chan,
 580                                    bool large)
 581 {
 582         /* Some channels must be completely excluded from the
 583          * list to protect old user-space tools from breaking
 584          */
 585         if (!large && chan->flags &
 586             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 587                 return 0;
 588
 589         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 590                         chan->center_freq))
 591                 goto nla_put_failure;
 592
 593         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 594             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 595                 goto nla_put_failure;
 596         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 597                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 598                         goto nla_put_failure;
 599                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 600                         goto nla_put_failure;
 601         }
 602         if (chan->flags & IEEE80211_CHAN_RADAR) {
 603                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 604                         goto nla_put_failure;
 605                 if (large) {
 606                         u32 time;
 607
 608                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 609
 610                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 611                                         chan->dfs_state))
 612                                 goto nla_put_failure;
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 614                                         time))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg,
 617                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 618                                         chan->dfs_cac_ms))
 619                                 goto nla_put_failure;
 620                 }
 621         }
 622
 623         if (large) {
 624                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 625                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 626                         goto nla_put_failure;
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 647                         goto nla_put_failure;
 648         }
 649
 650         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 651                         DBM_TO_MBM(chan->max_power)))
 652                 goto nla_put_failure;
 653
 654         return 0;
 655
 656  nla_put_failure:
 657         return -ENOBUFS;
 658 }
 659
 660 /* netlink command implementations */
 661
 662 struct key_parse {
 663         struct key_params p;
 664         int idx;
 665         int type;
 666         bool def, defmgmt;
 667         bool def_uni, def_multi;
 668 };
 669
 670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 671 {
 672         struct nlattr *tb[NL80211_KEY_MAX + 1];
 673         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 674                                    nl80211_key_policy);
 675         if (err)
 676                 return err;
 677
 678         k->def = !!tb[NL80211_KEY_DEFAULT];
 679         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 680
 681         if (k->def) {
 682                 k->def_uni = true;
 683                 k->def_multi = true;
 684         }
 685         if (k->defmgmt)
 686                 k->def_multi = true;
 687
 688         if (tb[NL80211_KEY_IDX])
 689                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 690
 691         if (tb[NL80211_KEY_DATA]) {
 692                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 693                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 694         }
 695
 696         if (tb[NL80211_KEY_SEQ]) {
 697                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 698                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 699         }
 700
 701         if (tb[NL80211_KEY_CIPHER])
 702                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 703
 704         if (tb[NL80211_KEY_TYPE]) {
 705                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 706                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 707                         return -EINVAL;
 708         }
 709
 710         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 711                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 712                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 713                                        tb[NL80211_KEY_DEFAULT_TYPES],
 714                                        nl80211_key_default_policy);
 715                 if (err)
 716                         return err;
 717
 718                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 719                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 720         }
 721
 722         return 0;
 723 }
 724
 725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 726 {
 727         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 728                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 729                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 730         }
 731
 732         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 733                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 734                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 735         }
 736
 737         if (info->attrs[NL80211_ATTR_KEY_IDX])
 738                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 739
 740         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 741                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 742
 743         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 744         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 745
 746         if (k->def) {
 747                 k->def_uni = true;
 748                 k->def_multi = true;
 749         }
 750         if (k->defmgmt)
 751                 k->def_multi = true;
 752
 753         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 754                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 755                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 756                         return -EINVAL;
 757         }
 758
 759         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 760                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 761                 int err = nla_parse_nested(
 762                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 763                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 764                                 nl80211_key_default_policy);
 765                 if (err)
 766                         return err;
 767
 768                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 769                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 776 {
 777         int err;
 778
 779         memset(k, 0, sizeof(*k));
 780         k->idx = -1;
 781         k->type = -1;
 782
 783         if (info->attrs[NL80211_ATTR_KEY])
 784                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 785         else
 786                 err = nl80211_parse_key_old(info, k);
 787
 788         if (err)
 789                 return err;
 790
 791         if (k->def && k->defmgmt)
 792                 return -EINVAL;
 793
 794         if (k->defmgmt) {
 795                 if (k->def_uni || !k->def_multi)
 796                         return -EINVAL;
 797         }
 798
 799         if (k->idx != -1) {
 800                 if (k->defmgmt) {
 801                         if (k->idx < 4 || k->idx > 5)
 802                                 return -EINVAL;
 803                 } else if (k->def) {
 804                         if (k->idx < 0 || k->idx > 3)
 805                                 return -EINVAL;
 806                 } else {
 807                         if (k->idx < 0 || k->idx > 5)
 808                                 return -EINVAL;
 809                 }
 810         }
 811
 812         return 0;
 813 }
 814
 815 static struct cfg80211_cached_keys *
 816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 817                        struct nlattr *keys, bool *no_ht)
 818 {
 819         struct key_parse parse;
 820         struct nlattr *key;
 821         struct cfg80211_cached_keys *result;
 822         int rem, err, def = 0;
 823
 824         result = kzalloc(sizeof(*result), GFP_KERNEL);
 825         if (!result)
 826                 return ERR_PTR(-ENOMEM);
 827
 828         result->def = -1;
 829         result->defmgmt = -1;
 830
 831         nla_for_each_nested(key, keys, rem) {
 832                 memset(&parse, 0, sizeof(parse));
 833                 parse.idx = -1;
 834
 835                 err = nl80211_parse_key_new(key, &parse);
 836                 if (err)
 837                         goto error;
 838                 err = -EINVAL;
 839                 if (!parse.p.key)
 840                         goto error;
 841                 if (parse.idx < 0 || parse.idx > 4)
 842                         goto error;
 843                 if (parse.def) {
 844                         if (def)
 845                                 goto error;
 846                         def = 1;
 847                         result->def = parse.idx;
 848                         if (!parse.def_uni || !parse.def_multi)
 849                                 goto error;
 850                 } else if (parse.defmgmt)
 851                         goto error;
 852                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 853                                                      parse.idx, false, NULL);
 854                 if (err)
 855                         goto error;
 856                 result->params[parse.idx].cipher = parse.p.cipher;
 857                 result->params[parse.idx].key_len = parse.p.key_len;
 858                 result->params[parse.idx].key = result->data[parse.idx];
 859                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 860
 861                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 862                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 863                         if (no_ht)
 864                                 *no_ht = true;
 865                 }
 866         }
 867
 868         return result;
 869  error:
 870         kfree(result);
 871         return ERR_PTR(err);
 872 }
 873
 874 static int nl80211_key_allowed(struct wireless_dev *wdev)
 875 {
 876         ASSERT_WDEV_LOCK(wdev);
 877
 878         switch (wdev->iftype) {
 879         case NL80211_IFTYPE_AP:
 880         case NL80211_IFTYPE_AP_VLAN:
 881         case NL80211_IFTYPE_P2P_GO:
 882         case NL80211_IFTYPE_MESH_POINT:
 883                 break;
 884         case NL80211_IFTYPE_ADHOC:
 885         case NL80211_IFTYPE_STATION:
 886         case NL80211_IFTYPE_P2P_CLIENT:
 887                 if (!wdev->current_bss)
 888                         return -ENOLINK;
 889                 break;
 890         case NL80211_IFTYPE_UNSPECIFIED:
 891         case NL80211_IFTYPE_OCB:
 892         case NL80211_IFTYPE_MONITOR:
 893         case NL80211_IFTYPE_P2P_DEVICE:
 894         case NL80211_IFTYPE_WDS:
 895         case NUM_NL80211_IFTYPES:
 896                 return -EINVAL;
 897         }
 898
 899         return 0;
 900 }
 901
 902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 903                                                         struct nlattr *tb)
 904 {
 905         struct ieee80211_channel *chan;
 906
 907         if (tb == NULL)
 908                 return NULL;
 909         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 910         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 911                 return NULL;
 912         return chan;
 913 }
 914
 915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 916 {
 917         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 918         int i;
 919
 920         if (!nl_modes)
 921                 goto nla_put_failure;
 922
 923         i = 0;
 924         while (ifmodes) {
 925                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 926                         goto nla_put_failure;
 927                 ifmodes >>= 1;
 928                 i++;
 929         }
 930
 931         nla_nest_end(msg, nl_modes);
 932         return 0;
 933
 934 nla_put_failure:
 935         return -ENOBUFS;
 936 }
 937
 938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 939                                           struct sk_buff *msg,
 940                                           bool large)
 941 {
 942         struct nlattr *nl_combis;
 943         int i, j;
 944
 945         nl_combis = nla_nest_start(msg,
 946                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 947         if (!nl_combis)
 948                 goto nla_put_failure;
 949
 950         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 951                 const struct ieee80211_iface_combination *c;
 952                 struct nlattr *nl_combi, *nl_limits;
 953
 954                 c = &wiphy->iface_combinations[i];
 955
 956                 nl_combi = nla_nest_start(msg, i + 1);
 957                 if (!nl_combi)
 958                         goto nla_put_failure;
 959
 960                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 961                 if (!nl_limits)
 962                         goto nla_put_failure;
 963
 964                 for (j = 0; j < c->n_limits; j++) {
 965                         struct nlattr *nl_limit;
 966
 967                         nl_limit = nla_nest_start(msg, j + 1);
 968                         if (!nl_limit)
 969                                 goto nla_put_failure;
 970                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 971                                         c->limits[j].max))
 972                                 goto nla_put_failure;
 973                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 974                                                 c->limits[j].types))
 975                                 goto nla_put_failure;
 976                         nla_nest_end(msg, nl_limit);
 977                 }
 978
 979                 nla_nest_end(msg, nl_limits);
 980
 981                 if (c->beacon_int_infra_match &&
 982                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 983                         goto nla_put_failure;
 984                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 985                                 c->num_different_channels) ||
 986                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 987                                 c->max_interfaces))
 988                         goto nla_put_failure;
 989                 if (large &&
 990                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 991                                 c->radar_detect_widths) ||
 992                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 993                                 c->radar_detect_regions)))
 994                         goto nla_put_failure;
 995
 996                 nla_nest_end(msg, nl_combi);
 997         }
 998
 999         nla_nest_end(msg, nl_combis);
1000
1001         return 0;
1002 nla_put_failure:
1003         return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008                                         struct sk_buff *msg)
1009 {
1010         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011         struct nlattr *nl_tcp;
1012
1013         if (!tcp)
1014                 return 0;
1015
1016         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017         if (!nl_tcp)
1018                 return -ENOBUFS;
1019
1020         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021                         tcp->data_payload_max))
1022                 return -ENOBUFS;
1023
1024         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025                         tcp->data_payload_max))
1026                 return -ENOBUFS;
1027
1028         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029                 return -ENOBUFS;
1030
1031         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032                                 sizeof(*tcp->tok), tcp->tok))
1033                 return -ENOBUFS;
1034
1035         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036                         tcp->data_interval_max))
1037                 return -ENOBUFS;
1038
1039         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040                         tcp->wake_payload_max))
1041                 return -ENOBUFS;
1042
1043         nla_nest_end(msg, nl_tcp);
1044         return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048                                struct cfg80211_registered_device *rdev,
1049                                bool large)
1050 {
1051         struct nlattr *nl_wowlan;
1052
1053         if (!rdev->wiphy.wowlan)
1054                 return 0;
1055
1056         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057         if (!nl_wowlan)
1058                 return -ENOBUFS;
1059
1060         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076                 return -ENOBUFS;
1077
1078         if (rdev->wiphy.wowlan->n_patterns) {
1079                 struct nl80211_pattern_support pat = {
1080                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084                 };
1085
1086                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087                             sizeof(pat), &pat))
1088                         return -ENOBUFS;
1089         }
1090
1091         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1092                 return -ENOBUFS;
1093
1094         /* TODO: send wowlan net detect */
1095
1096         nla_nest_end(msg, nl_wowlan);
1097
1098         return 0;
1099 }
1100 #endif
1101
1102 static int nl80211_send_coalesce(struct sk_buff *msg,
1103                                  struct cfg80211_registered_device *rdev)
1104 {
1105         struct nl80211_coalesce_rule_support rule;
1106
1107         if (!rdev->wiphy.coalesce)
1108                 return 0;
1109
1110         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1111         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1112         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1113         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1114         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1115         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1116
1117         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1118                 return -ENOBUFS;
1119
1120         return 0;
1121 }
1122
1123 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1124                                       struct ieee80211_supported_band *sband)
1125 {
1126         struct nlattr *nl_rates, *nl_rate;
1127         struct ieee80211_rate *rate;
1128         int i;
1129
1130         /* add HT info */
1131         if (sband->ht_cap.ht_supported &&
1132             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1133                      sizeof(sband->ht_cap.mcs),
1134                      &sband->ht_cap.mcs) ||
1135              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1136                          sband->ht_cap.cap) ||
1137              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1138                         sband->ht_cap.ampdu_factor) ||
1139              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1140                         sband->ht_cap.ampdu_density)))
1141                 return -ENOBUFS;
1142
1143         /* add VHT info */
1144         if (sband->vht_cap.vht_supported &&
1145             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1146                      sizeof(sband->vht_cap.vht_mcs),
1147                      &sband->vht_cap.vht_mcs) ||
1148              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1149                          sband->vht_cap.cap)))
1150                 return -ENOBUFS;
1151
1152         /* add bitrates */
1153         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1154         if (!nl_rates)
1155                 return -ENOBUFS;
1156
1157         for (i = 0; i < sband->n_bitrates; i++) {
1158                 nl_rate = nla_nest_start(msg, i);
1159                 if (!nl_rate)
1160                         return -ENOBUFS;
1161
1162                 rate = &sband->bitrates[i];
1163                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1164                                 rate->bitrate))
1165                         return -ENOBUFS;
1166                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1167                     nla_put_flag(msg,
1168                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1169                         return -ENOBUFS;
1170
1171                 nla_nest_end(msg, nl_rate);
1172         }
1173
1174         nla_nest_end(msg, nl_rates);
1175
1176         return 0;
1177 }
1178
1179 static int
1180 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1181                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1182 {
1183         u16 stypes;
1184         struct nlattr *nl_ftypes, *nl_ifs;
1185         enum nl80211_iftype ift;
1186         int i;
1187
1188         if (!mgmt_stypes)
1189                 return 0;
1190
1191         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1192         if (!nl_ifs)
1193                 return -ENOBUFS;
1194
1195         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1196                 nl_ftypes = nla_nest_start(msg, ift);
1197                 if (!nl_ftypes)
1198                         return -ENOBUFS;
1199                 i = 0;
1200                 stypes = mgmt_stypes[ift].tx;
1201                 while (stypes) {
1202                         if ((stypes & 1) &&
1203                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1204                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1205                                 return -ENOBUFS;
1206                         stypes >>= 1;
1207                         i++;
1208                 }
1209                 nla_nest_end(msg, nl_ftypes);
1210         }
1211
1212         nla_nest_end(msg, nl_ifs);
1213
1214         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1215         if (!nl_ifs)
1216                 return -ENOBUFS;
1217
1218         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1219                 nl_ftypes = nla_nest_start(msg, ift);
1220                 if (!nl_ftypes)
1221                         return -ENOBUFS;
1222                 i = 0;
1223                 stypes = mgmt_stypes[ift].rx;
1224                 while (stypes) {
1225                         if ((stypes & 1) &&
1226                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1227                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1228                                 return -ENOBUFS;
1229                         stypes >>= 1;
1230                         i++;
1231                 }
1232                 nla_nest_end(msg, nl_ftypes);
1233         }
1234         nla_nest_end(msg, nl_ifs);
1235
1236         return 0;
1237 }
1238
1239 struct nl80211_dump_wiphy_state {
1240         s64 filter_wiphy;
1241         long start;
1242         long split_start, band_start, chan_start;
1243         bool split;
1244 };
1245
1246 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1247                               enum nl80211_commands cmd,
1248                               struct sk_buff *msg, u32 portid, u32 seq,
1249                               int flags, struct nl80211_dump_wiphy_state *state)
1250 {
1251         void *hdr;
1252         struct nlattr *nl_bands, *nl_band;
1253         struct nlattr *nl_freqs, *nl_freq;
1254         struct nlattr *nl_cmds;
1255         enum ieee80211_band band;
1256         struct ieee80211_channel *chan;
1257         int i;
1258         const struct ieee80211_txrx_stypes *mgmt_stypes =
1259                                 rdev->wiphy.mgmt_stypes;
1260         u32 features;
1261
1262         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1263         if (!hdr)
1264                 return -ENOBUFS;
1265
1266         if (WARN_ON(!state))
1267                 return -EINVAL;
1268
1269         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1270             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1271                            wiphy_name(&rdev->wiphy)) ||
1272             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1273                         cfg80211_rdev_list_generation))
1274                 goto nla_put_failure;
1275
1276         if (cmd != NL80211_CMD_NEW_WIPHY)
1277                 goto finish;
1278
1279         switch (state->split_start) {
1280         case 0:
1281                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1282                                rdev->wiphy.retry_short) ||
1283                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1284                                rdev->wiphy.retry_long) ||
1285                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1286                                 rdev->wiphy.frag_threshold) ||
1287                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1288                                 rdev->wiphy.rts_threshold) ||
1289                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1290                                rdev->wiphy.coverage_class) ||
1291                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1292                                rdev->wiphy.max_scan_ssids) ||
1293                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1294                                rdev->wiphy.max_sched_scan_ssids) ||
1295                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1296                                 rdev->wiphy.max_scan_ie_len) ||
1297                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1298                                 rdev->wiphy.max_sched_scan_ie_len) ||
1299                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1300                                rdev->wiphy.max_match_sets))
1301                         goto nla_put_failure;
1302
1303                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1304                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1305                         goto nla_put_failure;
1306                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1307                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1308                         goto nla_put_failure;
1309                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1310                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1311                         goto nla_put_failure;
1312                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1313                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1314                         goto nla_put_failure;
1315                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1316                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1317                         goto nla_put_failure;
1318                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1319                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1320                         goto nla_put_failure;
1321                 state->split_start++;
1322                 if (state->split)
1323                         break;
1324         case 1:
1325                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1326                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1327                             rdev->wiphy.cipher_suites))
1328                         goto nla_put_failure;
1329
1330                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1331                                rdev->wiphy.max_num_pmkids))
1332                         goto nla_put_failure;
1333
1334                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1335                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1336                         goto nla_put_failure;
1337
1338                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1339                                 rdev->wiphy.available_antennas_tx) ||
1340                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1341                                 rdev->wiphy.available_antennas_rx))
1342                         goto nla_put_failure;
1343
1344                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1345                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1346                                 rdev->wiphy.probe_resp_offload))
1347                         goto nla_put_failure;
1348
1349                 if ((rdev->wiphy.available_antennas_tx ||
1350                      rdev->wiphy.available_antennas_rx) &&
1351                     rdev->ops->get_antenna) {
1352                         u32 tx_ant = 0, rx_ant = 0;
1353                         int res;
1354                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1355                         if (!res) {
1356                                 if (nla_put_u32(msg,
1357                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1358                                                 tx_ant) ||
1359                                     nla_put_u32(msg,
1360                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1361                                                 rx_ant))
1362                                         goto nla_put_failure;
1363                         }
1364                 }
1365
1366                 state->split_start++;
1367                 if (state->split)
1368                         break;
1369         case 2:
1370                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1371                                         rdev->wiphy.interface_modes))
1372                                 goto nla_put_failure;
1373                 state->split_start++;
1374                 if (state->split)
1375                         break;
1376         case 3:
1377                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1378                 if (!nl_bands)
1379                         goto nla_put_failure;
1380
1381                 for (band = state->band_start;
1382                      band < IEEE80211_NUM_BANDS; band++) {
1383                         struct ieee80211_supported_band *sband;
1384
1385                         sband = rdev->wiphy.bands[band];
1386
1387                         if (!sband)
1388                                 continue;
1389
1390                         nl_band = nla_nest_start(msg, band);
1391                         if (!nl_band)
1392                                 goto nla_put_failure;
1393
1394                         switch (state->chan_start) {
1395                         case 0:
1396                                 if (nl80211_send_band_rateinfo(msg, sband))
1397                                         goto nla_put_failure;
1398                                 state->chan_start++;
1399                                 if (state->split)
1400                                         break;
1401                         default:
1402                                 /* add frequencies */
1403                                 nl_freqs = nla_nest_start(
1404                                         msg, NL80211_BAND_ATTR_FREQS);
1405                                 if (!nl_freqs)
1406                                         goto nla_put_failure;
1407
1408                                 for (i = state->chan_start - 1;
1409                                      i < sband->n_channels;
1410                                      i++) {
1411                                         nl_freq = nla_nest_start(msg, i);
1412                                         if (!nl_freq)
1413                                                 goto nla_put_failure;
1414
1415                                         chan = &sband->channels[i];
1416
1417                                         if (nl80211_msg_put_channel(
1418                                                         msg, chan,
1419                                                         state->split))
1420                                                 goto nla_put_failure;
1421
1422                                         nla_nest_end(msg, nl_freq);
1423                                         if (state->split)
1424                                                 break;
1425                                 }
1426                                 if (i < sband->n_channels)
1427                                         state->chan_start = i + 2;
1428                                 else
1429                                         state->chan_start = 0;
1430                                 nla_nest_end(msg, nl_freqs);
1431                         }
1432
1433                         nla_nest_end(msg, nl_band);
1434
1435                         if (state->split) {
1436                                 /* start again here */
1437                                 if (state->chan_start)
1438                                         band--;
1439                                 break;
1440                         }
1441                 }
1442                 nla_nest_end(msg, nl_bands);
1443
1444                 if (band < IEEE80211_NUM_BANDS)
1445                         state->band_start = band + 1;
1446                 else
1447                         state->band_start = 0;
1448
1449                 /* if bands & channels are done, continue outside */
1450                 if (state->band_start == 0 && state->chan_start == 0)
1451                         state->split_start++;
1452                 if (state->split)
1453                         break;
1454         case 4:
1455                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1456                 if (!nl_cmds)
1457                         goto nla_put_failure;
1458
1459                 i = 0;
1460 #define CMD(op, n)                                                      \
1461                  do {                                                   \
1462                         if (rdev->ops->op) {                            \
1463                                 i++;                                    \
1464                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1465                                         goto nla_put_failure;           \
1466                         }                                               \
1467                 } while (0)
1468
1469                 CMD(add_virtual_intf, NEW_INTERFACE);
1470                 CMD(change_virtual_intf, SET_INTERFACE);
1471                 CMD(add_key, NEW_KEY);
1472                 CMD(start_ap, START_AP);
1473                 CMD(add_station, NEW_STATION);
1474                 CMD(add_mpath, NEW_MPATH);
1475                 CMD(update_mesh_config, SET_MESH_CONFIG);
1476                 CMD(change_bss, SET_BSS);
1477                 CMD(auth, AUTHENTICATE);
1478                 CMD(assoc, ASSOCIATE);
1479                 CMD(deauth, DEAUTHENTICATE);
1480                 CMD(disassoc, DISASSOCIATE);
1481                 CMD(join_ibss, JOIN_IBSS);
1482                 CMD(join_mesh, JOIN_MESH);
1483                 CMD(set_pmksa, SET_PMKSA);
1484                 CMD(del_pmksa, DEL_PMKSA);
1485                 CMD(flush_pmksa, FLUSH_PMKSA);
1486                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1487                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1488                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1489                 CMD(mgmt_tx, FRAME);
1490                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1491                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1492                         i++;
1493                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1494                                 goto nla_put_failure;
1495                 }
1496                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1497                     rdev->ops->join_mesh) {
1498                         i++;
1499                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1500                                 goto nla_put_failure;
1501                 }
1502                 CMD(set_wds_peer, SET_WDS_PEER);
1503                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1504                         CMD(tdls_mgmt, TDLS_MGMT);
1505                         CMD(tdls_oper, TDLS_OPER);
1506                 }
1507                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1508                         CMD(sched_scan_start, START_SCHED_SCAN);
1509                 CMD(probe_client, PROBE_CLIENT);
1510                 CMD(set_noack_map, SET_NOACK_MAP);
1511                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1512                         i++;
1513                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1514                                 goto nla_put_failure;
1515                 }
1516                 CMD(start_p2p_device, START_P2P_DEVICE);
1517                 CMD(set_mcast_rate, SET_MCAST_RATE);
1518 #ifdef CONFIG_NL80211_TESTMODE
1519                 CMD(testmode_cmd, TESTMODE);
1520 #endif
1521                 if (state->split) {
1522                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1523                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1524                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1525                                 CMD(channel_switch, CHANNEL_SWITCH);
1526                         CMD(set_qos_map, SET_QOS_MAP);
1527                         if (rdev->wiphy.features &
1528                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1529                                 CMD(add_tx_ts, ADD_TX_TS);
1530                 }
1531                 /* add into the if now */
1532 #undef CMD
1533
1534                 if (rdev->ops->connect || rdev->ops->auth) {
1535                         i++;
1536                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1537                                 goto nla_put_failure;
1538                 }
1539
1540                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1541                         i++;
1542                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1543                                 goto nla_put_failure;
1544                 }
1545
1546                 nla_nest_end(msg, nl_cmds);
1547                 state->split_start++;
1548                 if (state->split)
1549                         break;
1550         case 5:
1551                 if (rdev->ops->remain_on_channel &&
1552                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1553                     nla_put_u32(msg,
1554                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1555                                 rdev->wiphy.max_remain_on_channel_duration))
1556                         goto nla_put_failure;
1557
1558                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1559                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1560                         goto nla_put_failure;
1561
1562                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1563                         goto nla_put_failure;
1564                 state->split_start++;
1565                 if (state->split)
1566                         break;
1567         case 6:
1568 #ifdef CONFIG_PM
1569                 if (nl80211_send_wowlan(msg, rdev, state->split))
1570                         goto nla_put_failure;
1571                 state->split_start++;
1572                 if (state->split)
1573                         break;
1574 #else
1575                 state->split_start++;
1576 #endif
1577         case 7:
1578                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1579                                         rdev->wiphy.software_iftypes))
1580                         goto nla_put_failure;
1581
1582                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1583                                                    state->split))
1584                         goto nla_put_failure;
1585
1586                 state->split_start++;
1587                 if (state->split)
1588                         break;
1589         case 8:
1590                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1591                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1592                                 rdev->wiphy.ap_sme_capa))
1593                         goto nla_put_failure;
1594
1595                 features = rdev->wiphy.features;
1596                 /*
1597                  * We can only add the per-channel limit information if the
1598                  * dump is split, otherwise it makes it too big. Therefore
1599                  * only advertise it in that case.
1600                  */
1601                 if (state->split)
1602                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1603                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1604                         goto nla_put_failure;
1605
1606                 if (rdev->wiphy.ht_capa_mod_mask &&
1607                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1608                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1609                             rdev->wiphy.ht_capa_mod_mask))
1610                         goto nla_put_failure;
1611
1612                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1613                     rdev->wiphy.max_acl_mac_addrs &&
1614                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1615                                 rdev->wiphy.max_acl_mac_addrs))
1616                         goto nla_put_failure;
1617
1618                 /*
1619                  * Any information below this point is only available to
1620                  * applications that can deal with it being split. This
1621                  * helps ensure that newly added capabilities don't break
1622                  * older tools by overrunning their buffers.
1623                  *
1624                  * We still increment split_start so that in the split
1625                  * case we'll continue with more data in the next round,
1626                  * but break unconditionally so unsplit data stops here.
1627                  */
1628                 state->split_start++;
1629                 break;
1630         case 9:
1631                 if (rdev->wiphy.extended_capabilities &&
1632                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1633                              rdev->wiphy.extended_capabilities_len,
1634                              rdev->wiphy.extended_capabilities) ||
1635                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1636                              rdev->wiphy.extended_capabilities_len,
1637                              rdev->wiphy.extended_capabilities_mask)))
1638                         goto nla_put_failure;
1639
1640                 if (rdev->wiphy.vht_capa_mod_mask &&
1641                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1642                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1643                             rdev->wiphy.vht_capa_mod_mask))
1644                         goto nla_put_failure;
1645
1646                 state->split_start++;
1647                 break;
1648         case 10:
1649                 if (nl80211_send_coalesce(msg, rdev))
1650                         goto nla_put_failure;
1651
1652                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1653                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1654                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1655                         goto nla_put_failure;
1656
1657                 if (rdev->wiphy.max_ap_assoc_sta &&
1658                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1659                                 rdev->wiphy.max_ap_assoc_sta))
1660                         goto nla_put_failure;
1661
1662                 state->split_start++;
1663                 break;
1664         case 11:
1665                 if (rdev->wiphy.n_vendor_commands) {
1666                         const struct nl80211_vendor_cmd_info *info;
1667                         struct nlattr *nested;
1668
1669                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1670                         if (!nested)
1671                                 goto nla_put_failure;
1672
1673                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1674                                 info = &rdev->wiphy.vendor_commands[i].info;
1675                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1676                                         goto nla_put_failure;
1677                         }
1678                         nla_nest_end(msg, nested);
1679                 }
1680
1681                 if (rdev->wiphy.n_vendor_events) {
1682                         const struct nl80211_vendor_cmd_info *info;
1683                         struct nlattr *nested;
1684
1685                         nested = nla_nest_start(msg,
1686                                                 NL80211_ATTR_VENDOR_EVENTS);
1687                         if (!nested)
1688                                 goto nla_put_failure;
1689
1690                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1691                                 info = &rdev->wiphy.vendor_events[i];
1692                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1693                                         goto nla_put_failure;
1694                         }
1695                         nla_nest_end(msg, nested);
1696                 }
1697                 state->split_start++;
1698                 break;
1699         case 12:
1700                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1701                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1702                                rdev->wiphy.max_num_csa_counters))
1703                         goto nla_put_failure;
1704
1705                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1706                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1707                         goto nla_put_failure;
1708
1709                 /* done */
1710                 state->split_start = 0;
1711                 break;
1712         }
1713  finish:
1714         return genlmsg_end(msg, hdr);
1715
1716  nla_put_failure:
1717         genlmsg_cancel(msg, hdr);
1718         return -EMSGSIZE;
1719 }
1720
1721 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1722                                     struct netlink_callback *cb,
1723                                     struct nl80211_dump_wiphy_state *state)
1724 {
1725         struct nlattr **tb = nl80211_fam.attrbuf;
1726         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1727                               tb, nl80211_fam.maxattr, nl80211_policy);
1728         /* ignore parse errors for backward compatibility */
1729         if (ret)
1730                 return 0;
1731
1732         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1733         if (tb[NL80211_ATTR_WIPHY])
1734                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1735         if (tb[NL80211_ATTR_WDEV])
1736                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1737         if (tb[NL80211_ATTR_IFINDEX]) {
1738                 struct net_device *netdev;
1739                 struct cfg80211_registered_device *rdev;
1740                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1741
1742                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1743                 if (!netdev)
1744                         return -ENODEV;
1745                 if (netdev->ieee80211_ptr) {
1746                         rdev = wiphy_to_rdev(
1747                                 netdev->ieee80211_ptr->wiphy);
1748                         state->filter_wiphy = rdev->wiphy_idx;
1749                 }
1750         }
1751
1752         return 0;
1753 }
1754
1755 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1756 {
1757         int idx = 0, ret;
1758         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1759         struct cfg80211_registered_device *rdev;
1760
1761         rtnl_lock();
1762         if (!state) {
1763                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1764                 if (!state) {
1765                         rtnl_unlock();
1766                         return -ENOMEM;
1767                 }
1768                 state->filter_wiphy = -1;
1769                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1770                 if (ret) {
1771                         kfree(state);
1772                         rtnl_unlock();
1773                         return ret;
1774                 }
1775                 cb->args[0] = (long)state;
1776         }
1777
1778         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1779                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1780                         continue;
1781                 if (++idx <= state->start)
1782                         continue;
1783                 if (state->filter_wiphy != -1 &&
1784                     state->filter_wiphy != rdev->wiphy_idx)
1785                         continue;
1786                 /* attempt to fit multiple wiphy data chunks into the skb */
1787                 do {
1788                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1789                                                  skb,
1790                                                  NETLINK_CB(cb->skb).portid,
1791                                                  cb->nlh->nlmsg_seq,
1792                                                  NLM_F_MULTI, state);
1793                         if (ret < 0) {
1794                                 /*
1795                                  * If sending the wiphy data didn't fit (ENOBUFS
1796                                  * or EMSGSIZE returned), this SKB is still
1797                                  * empty (so it's not too big because another
1798                                  * wiphy dataset is already in the skb) and
1799                                  * we've not tried to adjust the dump allocation
1800                                  * yet ... then adjust the alloc size to be
1801                                  * bigger, and return 1 but with the empty skb.
1802                                  * This results in an empty message being RX'ed
1803                                  * in userspace, but that is ignored.
1804                                  *
1805                                  * We can then retry with the larger buffer.
1806                                  */
1807                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1808                                     !skb->len && !state->split &&
1809                                     cb->min_dump_alloc < 4096) {
1810                                         cb->min_dump_alloc = 4096;
1811                                         state->split_start = 0;
1812                                         rtnl_unlock();
1813                                         return 1;
1814                                 }
1815                                 idx--;
1816                                 break;
1817                         }
1818                 } while (state->split_start > 0);
1819                 break;
1820         }
1821         rtnl_unlock();
1822
1823         state->start = idx;
1824
1825         return skb->len;
1826 }
1827
1828 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1829 {
1830         kfree((void *)cb->args[0]);
1831         return 0;
1832 }
1833
1834 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1835 {
1836         struct sk_buff *msg;
1837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1838         struct nl80211_dump_wiphy_state state = {};
1839
1840         msg = nlmsg_new(4096, GFP_KERNEL);
1841         if (!msg)
1842                 return -ENOMEM;
1843
1844         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1845                                info->snd_portid, info->snd_seq, 0,
1846                                &state) < 0) {
1847                 nlmsg_free(msg);
1848                 return -ENOBUFS;
1849         }
1850
1851         return genlmsg_reply(msg, info);
1852 }
1853
1854 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1855         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1856         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1857         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1858         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1859         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1860 };
1861
1862 static int parse_txq_params(struct nlattr *tb[],
1863                             struct ieee80211_txq_params *txq_params)
1864 {
1865         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1866             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1867             !tb[NL80211_TXQ_ATTR_AIFS])
1868                 return -EINVAL;
1869
1870         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1871         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1872         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1873         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1874         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1875
1876         if (txq_params->ac >= NL80211_NUM_ACS)
1877                 return -EINVAL;
1878
1879         return 0;
1880 }
1881
1882 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1883 {
1884         /*
1885          * You can only set the channel explicitly for WDS interfaces,
1886          * all others have their channel managed via their respective
1887          * "establish a connection" command (connect, join, ...)
1888          *
1889          * For AP/GO and mesh mode, the channel can be set with the
1890          * channel userspace API, but is only stored and passed to the
1891          * low-level driver when the AP starts or the mesh is joined.
1892          * This is for backward compatibility, userspace can also give
1893          * the channel in the start-ap or join-mesh commands instead.
1894          *
1895          * Monitors are special as they are normally slaved to
1896          * whatever else is going on, so they have their own special
1897          * operation to set the monitor channel if possible.
1898          */
1899         return !wdev ||
1900                 wdev->iftype == NL80211_IFTYPE_AP ||
1901                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1902                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1903                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1904 }
1905
1906 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1907                                  struct genl_info *info,
1908                                  struct cfg80211_chan_def *chandef)
1909 {
1910         u32 control_freq;
1911
1912         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1913                 return -EINVAL;
1914
1915         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1916
1917         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1918         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1919         chandef->center_freq1 = control_freq;
1920         chandef->center_freq2 = 0;
1921
1922         /* Primary channel not allowed */
1923         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1924                 return -EINVAL;
1925
1926         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1927                 enum nl80211_channel_type chantype;
1928
1929                 chantype = nla_get_u32(
1930                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1931
1932                 switch (chantype) {
1933                 case NL80211_CHAN_NO_HT:
1934                 case NL80211_CHAN_HT20:
1935                 case NL80211_CHAN_HT40PLUS:
1936                 case NL80211_CHAN_HT40MINUS:
1937                         cfg80211_chandef_create(chandef, chandef->chan,
1938                                                 chantype);
1939                         break;
1940                 default:
1941                         return -EINVAL;
1942                 }
1943         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1944                 chandef->width =
1945                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1946                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1947                         chandef->center_freq1 =
1948                                 nla_get_u32(
1949                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1950                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1951                         chandef->center_freq2 =
1952                                 nla_get_u32(
1953                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1954         }
1955
1956         if (!cfg80211_chandef_valid(chandef))
1957                 return -EINVAL;
1958
1959         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1960                                      IEEE80211_CHAN_DISABLED))
1961                 return -EINVAL;
1962
1963         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1964              chandef->width == NL80211_CHAN_WIDTH_10) &&
1965             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1966                 return -EINVAL;
1967
1968         return 0;
1969 }
1970
1971 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1972                                  struct net_device *dev,
1973                                  struct genl_info *info)
1974 {
1975         struct cfg80211_chan_def chandef;
1976         int result;
1977         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1978         struct wireless_dev *wdev = NULL;
1979
1980         if (dev)
1981                 wdev = dev->ieee80211_ptr;
1982         if (!nl80211_can_set_dev_channel(wdev))
1983                 return -EOPNOTSUPP;
1984         if (wdev)
1985                 iftype = wdev->iftype;
1986
1987         result = nl80211_parse_chandef(rdev, info, &chandef);
1988         if (result)
1989                 return result;
1990
1991         switch (iftype) {
1992         case NL80211_IFTYPE_AP:
1993         case NL80211_IFTYPE_P2P_GO:
1994                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1995                         result = -EINVAL;
1996                         break;
1997                 }
1998                 if (wdev->beacon_interval) {
1999                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2000                             !(rdev->wiphy.features &
2001                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2002                                 result = -EBUSY;
2003                                 break;
2004                         }
2005
2006                         /* Only allow dynamic channel width changes */
2007                         if (chandef.chan != wdev->preset_chandef.chan) {
2008                                 result = -EBUSY;
2009                                 break;
2010                         }
2011                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2012                         if (result)
2013                                 break;
2014                 }
2015                 wdev->preset_chandef = chandef;
2016                 result = 0;
2017                 break;
2018         case NL80211_IFTYPE_MESH_POINT:
2019                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2020                 break;
2021         case NL80211_IFTYPE_MONITOR:
2022                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2023                 break;
2024         default:
2025                 result = -EINVAL;
2026         }
2027
2028         return result;
2029 }
2030
2031 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2032 {
2033         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2034         struct net_device *netdev = info->user_ptr[1];
2035
2036         return __nl80211_set_channel(rdev, netdev, info);
2037 }
2038
2039 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2040 {
2041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2042         struct net_device *dev = info->user_ptr[1];
2043         struct wireless_dev *wdev = dev->ieee80211_ptr;
2044         const u8 *bssid;
2045
2046         if (!info->attrs[NL80211_ATTR_MAC])
2047                 return -EINVAL;
2048
2049         if (netif_running(dev))
2050                 return -EBUSY;
2051
2052         if (!rdev->ops->set_wds_peer)
2053                 return -EOPNOTSUPP;
2054
2055         if (wdev->iftype != NL80211_IFTYPE_WDS)
2056                 return -EOPNOTSUPP;
2057
2058         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2059         return rdev_set_wds_peer(rdev, dev, bssid);
2060 }
2061
2062
2063 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2064 {
2065         struct cfg80211_registered_device *rdev;
2066         struct net_device *netdev = NULL;
2067         struct wireless_dev *wdev;
2068         int result = 0, rem_txq_params = 0;
2069         struct nlattr *nl_txq_params;
2070         u32 changed;
2071         u8 retry_short = 0, retry_long = 0;
2072         u32 frag_threshold = 0, rts_threshold = 0;
2073         u8 coverage_class = 0;
2074
2075         ASSERT_RTNL();
2076
2077         /*
2078          * Try to find the wiphy and netdev. Normally this
2079          * function shouldn't need the netdev, but this is
2080          * done for backward compatibility -- previously
2081          * setting the channel was done per wiphy, but now
2082          * it is per netdev. Previous userland like hostapd
2083          * also passed a netdev to set_wiphy, so that it is
2084          * possible to let that go to the right netdev!
2085          */
2086
2087         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2088                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2089
2090                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2091                 if (netdev && netdev->ieee80211_ptr)
2092                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2093                 else
2094                         netdev = NULL;
2095         }
2096
2097         if (!netdev) {
2098                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2099                                                   info->attrs);
2100                 if (IS_ERR(rdev))
2101                         return PTR_ERR(rdev);
2102                 wdev = NULL;
2103                 netdev = NULL;
2104                 result = 0;
2105         } else
2106                 wdev = netdev->ieee80211_ptr;
2107
2108         /*
2109          * end workaround code, by now the rdev is available
2110          * and locked, and wdev may or may not be NULL.
2111          */
2112
2113         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2114                 result = cfg80211_dev_rename(
2115                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2116
2117         if (result)
2118                 return result;
2119
2120         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2121                 struct ieee80211_txq_params txq_params;
2122                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2123
2124                 if (!rdev->ops->set_txq_params)
2125                         return -EOPNOTSUPP;
2126
2127                 if (!netdev)
2128                         return -EINVAL;
2129
2130                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2131                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2132                         return -EINVAL;
2133
2134                 if (!netif_running(netdev))
2135                         return -ENETDOWN;
2136
2137                 nla_for_each_nested(nl_txq_params,
2138                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2139                                     rem_txq_params) {
2140                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2141                                            nla_data(nl_txq_params),
2142                                            nla_len(nl_txq_params),
2143                                            txq_params_policy);
2144                         if (result)
2145                                 return result;
2146                         result = parse_txq_params(tb, &txq_params);
2147                         if (result)
2148                                 return result;
2149
2150                         result = rdev_set_txq_params(rdev, netdev,
2151                                                      &txq_params);
2152                         if (result)
2153                                 return result;
2154                 }
2155         }
2156
2157         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2158                 result = __nl80211_set_channel(
2159                         rdev,
2160                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2161                         info);
2162                 if (result)
2163                         return result;
2164         }
2165
2166         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2167                 struct wireless_dev *txp_wdev = wdev;
2168                 enum nl80211_tx_power_setting type;
2169                 int idx, mbm = 0;
2170
2171                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2172                         txp_wdev = NULL;
2173
2174                 if (!rdev->ops->set_tx_power)
2175                         return -EOPNOTSUPP;
2176
2177                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2178                 type = nla_get_u32(info->attrs[idx]);
2179
2180                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2181                     (type != NL80211_TX_POWER_AUTOMATIC))
2182                         return -EINVAL;
2183
2184                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2185                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2186                         mbm = nla_get_u32(info->attrs[idx]);
2187                 }
2188
2189                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2190                 if (result)
2191                         return result;
2192         }
2193
2194         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2195             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2196                 u32 tx_ant, rx_ant;
2197                 if ((!rdev->wiphy.available_antennas_tx &&
2198                      !rdev->wiphy.available_antennas_rx) ||
2199                     !rdev->ops->set_antenna)
2200                         return -EOPNOTSUPP;
2201
2202                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2203                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2204
2205                 /* reject antenna configurations which don't match the
2206                  * available antenna masks, except for the "all" mask */
2207                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2208                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2209                         return -EINVAL;
2210
2211                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2212                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2213
2214                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2215                 if (result)
2216                         return result;
2217         }
2218
2219         changed = 0;
2220
2221         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2222                 retry_short = nla_get_u8(
2223                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2224                 if (retry_short == 0)
2225                         return -EINVAL;
2226
2227                 changed |= WIPHY_PARAM_RETRY_SHORT;
2228         }
2229
2230         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2231                 retry_long = nla_get_u8(
2232                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2233                 if (retry_long == 0)
2234                         return -EINVAL;
2235
2236                 changed |= WIPHY_PARAM_RETRY_LONG;
2237         }
2238
2239         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2240                 frag_threshold = nla_get_u32(
2241                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2242                 if (frag_threshold < 256)
2243                         return -EINVAL;
2244
2245                 if (frag_threshold != (u32) -1) {
2246                         /*
2247                          * Fragments (apart from the last one) are required to
2248                          * have even length. Make the fragmentation code
2249                          * simpler by stripping LSB should someone try to use
2250                          * odd threshold value.
2251                          */
2252                         frag_threshold &= ~0x1;
2253                 }
2254                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2255         }
2256
2257         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2258                 rts_threshold = nla_get_u32(
2259                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2260                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2261         }
2262
2263         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2264                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2265                         return -EINVAL;
2266
2267                 coverage_class = nla_get_u8(
2268                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2269                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2270         }
2271
2272         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2273                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2274                         return -EOPNOTSUPP;
2275
2276                 changed |= WIPHY_PARAM_DYN_ACK;
2277         }
2278
2279         if (changed) {
2280                 u8 old_retry_short, old_retry_long;
2281                 u32 old_frag_threshold, old_rts_threshold;
2282                 u8 old_coverage_class;
2283
2284                 if (!rdev->ops->set_wiphy_params)
2285                         return -EOPNOTSUPP;
2286
2287                 old_retry_short = rdev->wiphy.retry_short;
2288                 old_retry_long = rdev->wiphy.retry_long;
2289                 old_frag_threshold = rdev->wiphy.frag_threshold;
2290                 old_rts_threshold = rdev->wiphy.rts_threshold;
2291                 old_coverage_class = rdev->wiphy.coverage_class;
2292
2293                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2294                         rdev->wiphy.retry_short = retry_short;
2295                 if (changed & WIPHY_PARAM_RETRY_LONG)
2296                         rdev->wiphy.retry_long = retry_long;
2297                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2298                         rdev->wiphy.frag_threshold = frag_threshold;
2299                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2300                         rdev->wiphy.rts_threshold = rts_threshold;
2301                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2302                         rdev->wiphy.coverage_class = coverage_class;
2303
2304                 result = rdev_set_wiphy_params(rdev, changed);
2305                 if (result) {
2306                         rdev->wiphy.retry_short = old_retry_short;
2307                         rdev->wiphy.retry_long = old_retry_long;
2308                         rdev->wiphy.frag_threshold = old_frag_threshold;
2309                         rdev->wiphy.rts_threshold = old_rts_threshold;
2310                         rdev->wiphy.coverage_class = old_coverage_class;
2311                 }
2312         }
2313         return 0;
2314 }
2315
2316 static inline u64 wdev_id(struct wireless_dev *wdev)
2317 {
2318         return (u64)wdev->identifier |
2319                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2320 }
2321
2322 static int nl80211_send_chandef(struct sk_buff *msg,
2323                                 const struct cfg80211_chan_def *chandef)
2324 {
2325         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2326                 return -EINVAL;
2327
2328         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2329                         chandef->chan->center_freq))
2330                 return -ENOBUFS;
2331         switch (chandef->width) {
2332         case NL80211_CHAN_WIDTH_20_NOHT:
2333         case NL80211_CHAN_WIDTH_20:
2334         case NL80211_CHAN_WIDTH_40:
2335                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2336                                 cfg80211_get_chandef_type(chandef)))
2337                         return -ENOBUFS;
2338                 break;
2339         default:
2340                 break;
2341         }
2342         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2343                 return -ENOBUFS;
2344         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2345                 return -ENOBUFS;
2346         if (chandef->center_freq2 &&
2347             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2348                 return -ENOBUFS;
2349         return 0;
2350 }
2351
2352 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2353                               struct cfg80211_registered_device *rdev,
2354                               struct wireless_dev *wdev, bool removal)
2355 {
2356         struct net_device *dev = wdev->netdev;
2357         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2358         void *hdr;
2359
2360         if (removal)
2361                 cmd = NL80211_CMD_DEL_INTERFACE;
2362
2363         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2364         if (!hdr)
2365                 return -1;
2366
2367         if (dev &&
2368             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2369              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2370                 goto nla_put_failure;
2371
2372         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2373             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2374             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2375             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2376             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2377                         rdev->devlist_generation ^
2378                         (cfg80211_rdev_list_generation << 2)))
2379                 goto nla_put_failure;
2380
2381         if (rdev->ops->get_channel) {
2382                 int ret;
2383                 struct cfg80211_chan_def chandef;
2384
2385                 ret = rdev_get_channel(rdev, wdev, &chandef);
2386                 if (ret == 0) {
2387                         if (nl80211_send_chandef(msg, &chandef))
2388                                 goto nla_put_failure;
2389                 }
2390         }
2391
2392         if (wdev->ssid_len) {
2393                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2394                         goto nla_put_failure;
2395         }
2396
2397         return genlmsg_end(msg, hdr);
2398
2399  nla_put_failure:
2400         genlmsg_cancel(msg, hdr);
2401         return -EMSGSIZE;
2402 }
2403
2404 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2405 {
2406         int wp_idx = 0;
2407         int if_idx = 0;
2408         int wp_start = cb->args[0];
2409         int if_start = cb->args[1];
2410         struct cfg80211_registered_device *rdev;
2411         struct wireless_dev *wdev;
2412
2413         rtnl_lock();
2414         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2415                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2416                         continue;
2417                 if (wp_idx < wp_start) {
2418                         wp_idx++;
2419                         continue;
2420                 }
2421                 if_idx = 0;
2422
2423                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2424                         if (if_idx < if_start) {
2425                                 if_idx++;
2426                                 continue;
2427                         }
2428                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2429                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2430                                                rdev, wdev, false) < 0) {
2431                                 goto out;
2432                         }
2433                         if_idx++;
2434                 }
2435
2436                 wp_idx++;
2437         }
2438  out:
2439         rtnl_unlock();
2440
2441         cb->args[0] = wp_idx;
2442         cb->args[1] = if_idx;
2443
2444         return skb->len;
2445 }
2446
2447 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2448 {
2449         struct sk_buff *msg;
2450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2451         struct wireless_dev *wdev = info->user_ptr[1];
2452
2453         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2454         if (!msg)
2455                 return -ENOMEM;
2456
2457         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2458                                rdev, wdev, false) < 0) {
2459                 nlmsg_free(msg);
2460                 return -ENOBUFS;
2461         }
2462
2463         return genlmsg_reply(msg, info);
2464 }
2465
2466 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2467         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2468         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2469         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2470         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2471         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2472         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2473 };
2474
2475 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2476 {
2477         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2478         int flag;
2479
2480         *mntrflags = 0;
2481
2482         if (!nla)
2483                 return -EINVAL;
2484
2485         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2486                              nla, mntr_flags_policy))
2487                 return -EINVAL;
2488
2489         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2490                 if (flags[flag])
2491                         *mntrflags |= (1<<flag);
2492
2493         return 0;
2494 }
2495
2496 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2497                                struct net_device *netdev, u8 use_4addr,
2498                                enum nl80211_iftype iftype)
2499 {
2500         if (!use_4addr) {
2501                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2502                         return -EBUSY;
2503                 return 0;
2504         }
2505
2506         switch (iftype) {
2507         case NL80211_IFTYPE_AP_VLAN:
2508                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2509                         return 0;
2510                 break;
2511         case NL80211_IFTYPE_STATION:
2512                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2513                         return 0;
2514                 break;
2515         default:
2516                 break;
2517         }
2518
2519         return -EOPNOTSUPP;
2520 }
2521
2522 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2523 {
2524         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2525         struct vif_params params;
2526         int err;
2527         enum nl80211_iftype otype, ntype;
2528         struct net_device *dev = info->user_ptr[1];
2529         u32 _flags, *flags = NULL;
2530         bool change = false;
2531
2532         memset(&params, 0, sizeof(params));
2533
2534         otype = ntype = dev->ieee80211_ptr->iftype;
2535
2536         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2537                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2538                 if (otype != ntype)
2539                         change = true;
2540                 if (ntype > NL80211_IFTYPE_MAX)
2541                         return -EINVAL;
2542         }
2543
2544         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2545                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2546
2547                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2548                         return -EINVAL;
2549                 if (netif_running(dev))
2550                         return -EBUSY;
2551
2552                 wdev_lock(wdev);
2553                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2554                              IEEE80211_MAX_MESH_ID_LEN);
2555                 wdev->mesh_id_up_len =
2556                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2557                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2558                        wdev->mesh_id_up_len);
2559                 wdev_unlock(wdev);
2560         }
2561
2562         if (info->attrs[NL80211_ATTR_4ADDR]) {
2563                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2564                 change = true;
2565                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2566                 if (err)
2567                         return err;
2568         } else {
2569                 params.use_4addr = -1;
2570         }
2571
2572         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2573                 if (ntype != NL80211_IFTYPE_MONITOR)
2574                         return -EINVAL;
2575                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2576                                           &_flags);
2577                 if (err)
2578                         return err;
2579
2580                 flags = &_flags;
2581                 change = true;
2582         }
2583
2584         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2585             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2586                 return -EOPNOTSUPP;
2587
2588         if (change)
2589                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2590         else
2591                 err = 0;
2592
2593         if (!err && params.use_4addr != -1)
2594                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2595
2596         return err;
2597 }
2598
2599 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2600 {
2601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2602         struct vif_params params;
2603         struct wireless_dev *wdev;
2604         struct sk_buff *msg, *event;
2605         int err;
2606         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2607         u32 flags;
2608
2609         /* to avoid failing a new interface creation due to pending removal */
2610         cfg80211_destroy_ifaces(rdev);
2611
2612         memset(&params, 0, sizeof(params));
2613
2614         if (!info->attrs[NL80211_ATTR_IFNAME])
2615                 return -EINVAL;
2616
2617         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2618                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2619                 if (type > NL80211_IFTYPE_MAX)
2620                         return -EINVAL;
2621         }
2622
2623         if (!rdev->ops->add_virtual_intf ||
2624             !(rdev->wiphy.interface_modes & (1 << type)))
2625                 return -EOPNOTSUPP;
2626
2627         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2628              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2629             info->attrs[NL80211_ATTR_MAC]) {
2630                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2631                            ETH_ALEN);
2632                 if (!is_valid_ether_addr(params.macaddr))
2633                         return -EADDRNOTAVAIL;
2634         }
2635
2636         if (info->attrs[NL80211_ATTR_4ADDR]) {
2637                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2638                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2639                 if (err)
2640                         return err;
2641         }
2642
2643         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2644         if (!msg)
2645                 return -ENOMEM;
2646
2647         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2648                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2649                                   &flags);
2650
2651         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2652             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2653                 return -EOPNOTSUPP;
2654
2655         wdev = rdev_add_virtual_intf(rdev,
2656                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2657                                 type, err ? NULL : &flags, &params);
2658         if (WARN_ON(!wdev)) {
2659                 nlmsg_free(msg);
2660                 return -EPROTO;
2661         } else if (IS_ERR(wdev)) {
2662                 nlmsg_free(msg);
2663                 return PTR_ERR(wdev);
2664         }
2665
2666         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2667                 wdev->owner_nlportid = info->snd_portid;
2668
2669         switch (type) {
2670         case NL80211_IFTYPE_MESH_POINT:
2671                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2672                         break;
2673                 wdev_lock(wdev);
2674                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2675                              IEEE80211_MAX_MESH_ID_LEN);
2676                 wdev->mesh_id_up_len =
2677                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2678                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2679                        wdev->mesh_id_up_len);
2680                 wdev_unlock(wdev);
2681                 break;
2682         case NL80211_IFTYPE_P2P_DEVICE:
2683                 /*
2684                  * P2P Device doesn't have a netdev, so doesn't go
2685                  * through the netdev notifier and must be added here
2686                  */
2687                 mutex_init(&wdev->mtx);
2688                 INIT_LIST_HEAD(&wdev->event_list);
2689                 spin_lock_init(&wdev->event_lock);
2690                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2691                 spin_lock_init(&wdev->mgmt_registrations_lock);
2692
2693                 wdev->identifier = ++rdev->wdev_id;
2694                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2695                 rdev->devlist_generation++;
2696                 break;
2697         default:
2698                 break;
2699         }
2700
2701         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2702                                rdev, wdev, false) < 0) {
2703                 nlmsg_free(msg);
2704                 return -ENOBUFS;
2705         }
2706
2707         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2708         if (event) {
2709                 if (nl80211_send_iface(event, 0, 0, 0,
2710                                        rdev, wdev, false) < 0) {
2711                         nlmsg_free(event);
2712                         goto out;
2713                 }
2714
2715                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2716                                         event, 0, NL80211_MCGRP_CONFIG,
2717                                         GFP_KERNEL);
2718         }
2719
2720 out:
2721         return genlmsg_reply(msg, info);
2722 }
2723
2724 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2725 {
2726         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2727         struct wireless_dev *wdev = info->user_ptr[1];
2728         struct sk_buff *msg;
2729         int status;
2730
2731         if (!rdev->ops->del_virtual_intf)
2732                 return -EOPNOTSUPP;
2733
2734         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2735         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2736                 nlmsg_free(msg);
2737                 msg = NULL;
2738         }
2739
2740         /*
2741          * If we remove a wireless device without a netdev then clear
2742          * user_ptr[1] so that nl80211_post_doit won't dereference it
2743          * to check if it needs to do dev_put(). Otherwise it crashes
2744          * since the wdev has been freed, unlike with a netdev where
2745          * we need the dev_put() for the netdev to really be freed.
2746          */
2747         if (!wdev->netdev)
2748                 info->user_ptr[1] = NULL;
2749
2750         status = rdev_del_virtual_intf(rdev, wdev);
2751         if (status >= 0 && msg)
2752                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2753                                         msg, 0, NL80211_MCGRP_CONFIG,
2754                                         GFP_KERNEL);
2755         else
2756                 nlmsg_free(msg);
2757
2758         return status;
2759 }
2760
2761 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2762 {
2763         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2764         struct net_device *dev = info->user_ptr[1];
2765         u16 noack_map;
2766
2767         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2768                 return -EINVAL;
2769
2770         if (!rdev->ops->set_noack_map)
2771                 return -EOPNOTSUPP;
2772
2773         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2774
2775         return rdev_set_noack_map(rdev, dev, noack_map);
2776 }
2777
2778 struct get_key_cookie {
2779         struct sk_buff *msg;
2780         int error;
2781         int idx;
2782 };
2783
2784 static void get_key_callback(void *c, struct key_params *params)
2785 {
2786         struct nlattr *key;
2787         struct get_key_cookie *cookie = c;
2788
2789         if ((params->key &&
2790              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2791                      params->key_len, params->key)) ||
2792             (params->seq &&
2793              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2794                      params->seq_len, params->seq)) ||
2795             (params->cipher &&
2796              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2797                          params->cipher)))
2798                 goto nla_put_failure;
2799
2800         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2801         if (!key)
2802                 goto nla_put_failure;
2803
2804         if ((params->key &&
2805              nla_put(cookie->msg, NL80211_KEY_DATA,
2806                      params->key_len, params->key)) ||
2807             (params->seq &&
2808              nla_put(cookie->msg, NL80211_KEY_SEQ,
2809                      params->seq_len, params->seq)) ||
2810             (params->cipher &&
2811              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2812                          params->cipher)))
2813                 goto nla_put_failure;
2814
2815         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2816                 goto nla_put_failure;
2817
2818         nla_nest_end(cookie->msg, key);
2819
2820         return;
2821  nla_put_failure:
2822         cookie->error = 1;
2823 }
2824
2825 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2826 {
2827         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2828         int err;
2829         struct net_device *dev = info->user_ptr[1];
2830         u8 key_idx = 0;
2831         const u8 *mac_addr = NULL;
2832         bool pairwise;
2833         struct get_key_cookie cookie = {
2834                 .error = 0,
2835         };
2836         void *hdr;
2837         struct sk_buff *msg;
2838
2839         if (info->attrs[NL80211_ATTR_KEY_IDX])
2840                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2841
2842         if (key_idx > 5)
2843                 return -EINVAL;
2844
2845         if (info->attrs[NL80211_ATTR_MAC])
2846                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2847
2848         pairwise = !!mac_addr;
2849         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2850                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2851                 if (kt >= NUM_NL80211_KEYTYPES)
2852                         return -EINVAL;
2853                 if (kt != NL80211_KEYTYPE_GROUP &&
2854                     kt != NL80211_KEYTYPE_PAIRWISE)
2855                         return -EINVAL;
2856                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2857         }
2858
2859         if (!rdev->ops->get_key)
2860                 return -EOPNOTSUPP;
2861
2862         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2863         if (!msg)
2864                 return -ENOMEM;
2865
2866         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2867                              NL80211_CMD_NEW_KEY);
2868         if (!hdr)
2869                 goto nla_put_failure;
2870
2871         cookie.msg = msg;
2872         cookie.idx = key_idx;
2873
2874         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2875             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2876                 goto nla_put_failure;
2877         if (mac_addr &&
2878             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2879                 goto nla_put_failure;
2880
2881         if (pairwise && mac_addr &&
2882             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2883                 return -ENOENT;
2884
2885         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2886                            get_key_callback);
2887
2888         if (err)
2889                 goto free_msg;
2890
2891         if (cookie.error)
2892                 goto nla_put_failure;
2893
2894         genlmsg_end(msg, hdr);
2895         return genlmsg_reply(msg, info);
2896
2897  nla_put_failure:
2898         err = -ENOBUFS;
2899  free_msg:
2900         nlmsg_free(msg);
2901         return err;
2902 }
2903
2904 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2905 {
2906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2907         struct key_parse key;
2908         int err;
2909         struct net_device *dev = info->user_ptr[1];
2910
2911         err = nl80211_parse_key(info, &key);
2912         if (err)
2913                 return err;
2914
2915         if (key.idx < 0)
2916                 return -EINVAL;
2917
2918         /* only support setting default key */
2919         if (!key.def && !key.defmgmt)
2920                 return -EINVAL;
2921
2922         wdev_lock(dev->ieee80211_ptr);
2923
2924         if (key.def) {
2925                 if (!rdev->ops->set_default_key) {
2926                         err = -EOPNOTSUPP;
2927                         goto out;
2928                 }
2929
2930                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2931                 if (err)
2932                         goto out;
2933
2934                 err = rdev_set_default_key(rdev, dev, key.idx,
2935                                                  key.def_uni, key.def_multi);
2936
2937                 if (err)
2938                         goto out;
2939
2940 #ifdef CONFIG_CFG80211_WEXT
2941                 dev->ieee80211_ptr->wext.default_key = key.idx;
2942 #endif
2943         } else {
2944                 if (key.def_uni || !key.def_multi) {
2945                         err = -EINVAL;
2946                         goto out;
2947                 }
2948
2949                 if (!rdev->ops->set_default_mgmt_key) {
2950                         err = -EOPNOTSUPP;
2951                         goto out;
2952                 }
2953
2954                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2955                 if (err)
2956                         goto out;
2957
2958                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2959                 if (err)
2960                         goto out;
2961
2962 #ifdef CONFIG_CFG80211_WEXT
2963                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2964 #endif
2965         }
2966
2967  out:
2968         wdev_unlock(dev->ieee80211_ptr);
2969
2970         return err;
2971 }
2972
2973 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2974 {
2975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2976         int err;
2977         struct net_device *dev = info->user_ptr[1];
2978         struct key_parse key;
2979         const u8 *mac_addr = NULL;
2980
2981         err = nl80211_parse_key(info, &key);
2982         if (err)
2983                 return err;
2984
2985         if (!key.p.key)
2986                 return -EINVAL;
2987
2988         if (info->attrs[NL80211_ATTR_MAC])
2989                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2990
2991         if (key.type == -1) {
2992                 if (mac_addr)
2993                         key.type = NL80211_KEYTYPE_PAIRWISE;
2994                 else
2995                         key.type = NL80211_KEYTYPE_GROUP;
2996         }
2997
2998         /* for now */
2999         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3000             key.type != NL80211_KEYTYPE_GROUP)
3001                 return -EINVAL;
3002
3003         if (!rdev->ops->add_key)
3004                 return -EOPNOTSUPP;
3005
3006         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3007                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3008                                            mac_addr))
3009                 return -EINVAL;
3010
3011         wdev_lock(dev->ieee80211_ptr);
3012         err = nl80211_key_allowed(dev->ieee80211_ptr);
3013         if (!err)
3014                 err = rdev_add_key(rdev, dev, key.idx,
3015                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3016                                     mac_addr, &key.p);
3017         wdev_unlock(dev->ieee80211_ptr);
3018
3019         return err;
3020 }
3021
3022 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3023 {
3024         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3025         int err;
3026         struct net_device *dev = info->user_ptr[1];
3027         u8 *mac_addr = NULL;
3028         struct key_parse key;
3029
3030         err = nl80211_parse_key(info, &key);
3031         if (err)
3032                 return err;
3033
3034         if (info->attrs[NL80211_ATTR_MAC])
3035                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3036
3037         if (key.type == -1) {
3038                 if (mac_addr)
3039                         key.type = NL80211_KEYTYPE_PAIRWISE;
3040                 else
3041                         key.type = NL80211_KEYTYPE_GROUP;
3042         }
3043
3044         /* for now */
3045         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3046             key.type != NL80211_KEYTYPE_GROUP)
3047                 return -EINVAL;
3048
3049         if (!rdev->ops->del_key)
3050                 return -EOPNOTSUPP;
3051
3052         wdev_lock(dev->ieee80211_ptr);
3053         err = nl80211_key_allowed(dev->ieee80211_ptr);
3054
3055         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3056             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3057                 err = -ENOENT;
3058
3059         if (!err)
3060                 err = rdev_del_key(rdev, dev, key.idx,
3061                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3062                                    mac_addr);
3063
3064 #ifdef CONFIG_CFG80211_WEXT
3065         if (!err) {
3066                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3067                         dev->ieee80211_ptr->wext.default_key = -1;
3068                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3069                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3070         }
3071 #endif
3072         wdev_unlock(dev->ieee80211_ptr);
3073
3074         return err;
3075 }
3076
3077 /* This function returns an error or the number of nested attributes */
3078 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3079 {
3080         struct nlattr *attr;
3081         int n_entries = 0, tmp;
3082
3083         nla_for_each_nested(attr, nl_attr, tmp) {
3084                 if (nla_len(attr) != ETH_ALEN)
3085                         return -EINVAL;
3086
3087                 n_entries++;
3088         }
3089
3090         return n_entries;
3091 }
3092
3093 /*
3094  * This function parses ACL information and allocates memory for ACL data.
3095  * On successful return, the calling function is responsible to free the
3096  * ACL buffer returned by this function.
3097  */
3098 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3099                                                 struct genl_info *info)
3100 {
3101         enum nl80211_acl_policy acl_policy;
3102         struct nlattr *attr;
3103         struct cfg80211_acl_data *acl;
3104         int i = 0, n_entries, tmp;
3105
3106         if (!wiphy->max_acl_mac_addrs)
3107                 return ERR_PTR(-EOPNOTSUPP);
3108
3109         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3110                 return ERR_PTR(-EINVAL);
3111
3112         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3113         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3114             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3115                 return ERR_PTR(-EINVAL);
3116
3117         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3118                 return ERR_PTR(-EINVAL);
3119
3120         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3121         if (n_entries < 0)
3122                 return ERR_PTR(n_entries);
3123
3124         if (n_entries > wiphy->max_acl_mac_addrs)
3125                 return ERR_PTR(-ENOTSUPP);
3126
3127         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3128                       GFP_KERNEL);
3129         if (!acl)
3130                 return ERR_PTR(-ENOMEM);
3131
3132         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3133                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3134                 i++;
3135         }
3136
3137         acl->n_acl_entries = n_entries;
3138         acl->acl_policy = acl_policy;
3139
3140         return acl;
3141 }
3142
3143 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3144 {
3145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3146         struct net_device *dev = info->user_ptr[1];
3147         struct cfg80211_acl_data *acl;
3148         int err;
3149
3150         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3151             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3152                 return -EOPNOTSUPP;
3153
3154         if (!dev->ieee80211_ptr->beacon_interval)
3155                 return -EINVAL;
3156
3157         acl = parse_acl_data(&rdev->wiphy, info);
3158         if (IS_ERR(acl))
3159                 return PTR_ERR(acl);
3160
3161         err = rdev_set_mac_acl(rdev, dev, acl);
3162
3163         kfree(acl);
3164
3165         return err;
3166 }
3167
3168 static int nl80211_parse_beacon(struct nlattr *attrs[],
3169                                 struct cfg80211_beacon_data *bcn)
3170 {
3171         bool haveinfo = false;
3172
3173         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3174             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3175             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3176             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3177                 return -EINVAL;
3178
3179         memset(bcn, 0, sizeof(*bcn));
3180
3181         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3182                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3183                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3184                 if (!bcn->head_len)
3185                         return -EINVAL;
3186                 haveinfo = true;
3187         }
3188
3189         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3190                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3191                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3192                 haveinfo = true;
3193         }
3194
3195         if (!haveinfo)
3196                 return -EINVAL;
3197
3198         if (attrs[NL80211_ATTR_IE]) {
3199                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3200                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3201         }
3202
3203         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3204                 bcn->proberesp_ies =
3205                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3206                 bcn->proberesp_ies_len =
3207                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3208         }
3209
3210         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3211                 bcn->assocresp_ies =
3212                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3213                 bcn->assocresp_ies_len =
3214                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3215         }
3216
3217         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3218                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3219                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3220         }
3221
3222         return 0;
3223 }
3224
3225 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3226                                    struct cfg80211_ap_settings *params)
3227 {
3228         struct wireless_dev *wdev;
3229         bool ret = false;
3230
3231         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3232                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3233                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3234                         continue;
3235
3236                 if (!wdev->preset_chandef.chan)
3237                         continue;
3238
3239                 params->chandef = wdev->preset_chandef;
3240                 ret = true;
3241                 break;
3242         }
3243
3244         return ret;
3245 }
3246
3247 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3248                                     enum nl80211_auth_type auth_type,
3249                                     enum nl80211_commands cmd)
3250 {
3251         if (auth_type > NL80211_AUTHTYPE_MAX)
3252                 return false;
3253
3254         switch (cmd) {
3255         case NL80211_CMD_AUTHENTICATE:
3256                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3257                     auth_type == NL80211_AUTHTYPE_SAE)
3258                         return false;
3259                 return true;
3260         case NL80211_CMD_CONNECT:
3261         case NL80211_CMD_START_AP:
3262                 /* SAE not supported yet */
3263                 if (auth_type == NL80211_AUTHTYPE_SAE)
3264                         return false;
3265                 return true;
3266         default:
3267                 return false;
3268         }
3269 }
3270
3271 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3272 {
3273         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3274         struct net_device *dev = info->user_ptr[1];
3275         struct wireless_dev *wdev = dev->ieee80211_ptr;
3276         struct cfg80211_ap_settings params;
3277         int err;
3278
3279         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3280             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3281                 return -EOPNOTSUPP;
3282
3283         if (!rdev->ops->start_ap)
3284                 return -EOPNOTSUPP;
3285
3286         if (wdev->beacon_interval)
3287                 return -EALREADY;
3288
3289         memset(&params, 0, sizeof(params));
3290
3291         /* these are required for START_AP */
3292         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3293             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3294             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3295                 return -EINVAL;
3296
3297         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3298         if (err)
3299                 return err;
3300
3301         params.beacon_interval =
3302                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3303         params.dtim_period =
3304                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3305
3306         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3307         if (err)
3308                 return err;
3309
3310         /*
3311          * In theory, some of these attributes should be required here
3312          * but since they were not used when the command was originally
3313          * added, keep them optional for old user space programs to let
3314          * them continue to work with drivers that do not need the
3315          * additional information -- drivers must check!
3316          */
3317         if (info->attrs[NL80211_ATTR_SSID]) {
3318                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3319                 params.ssid_len =
3320                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3321                 if (params.ssid_len == 0 ||
3322                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3323                         return -EINVAL;
3324         }
3325
3326         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3327                 params.hidden_ssid = nla_get_u32(
3328                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3329                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3330                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3331                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3332                         return -EINVAL;
3333         }
3334
3335         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3336
3337         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3338                 params.auth_type = nla_get_u32(
3339                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3340                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3341                                              NL80211_CMD_START_AP))
3342                         return -EINVAL;
3343         } else
3344                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3345
3346         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3347                                       NL80211_MAX_NR_CIPHER_SUITES);
3348         if (err)
3349                 return err;
3350
3351         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3352                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3353                         return -EOPNOTSUPP;
3354                 params.inactivity_timeout = nla_get_u16(
3355                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3356         }
3357
3358         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3359                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3360                         return -EINVAL;
3361                 params.p2p_ctwindow =
3362                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3363                 if (params.p2p_ctwindow > 127)
3364                         return -EINVAL;
3365                 if (params.p2p_ctwindow != 0 &&
3366                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3367                         return -EINVAL;
3368         }
3369
3370         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3371                 u8 tmp;
3372
3373                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3374                         return -EINVAL;
3375                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3376                 if (tmp > 1)
3377                         return -EINVAL;
3378                 params.p2p_opp_ps = tmp;
3379                 if (params.p2p_opp_ps != 0 &&
3380                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3381                         return -EINVAL;
3382         }
3383
3384         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3385                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3386                 if (err)
3387                         return err;
3388         } else if (wdev->preset_chandef.chan) {
3389                 params.chandef = wdev->preset_chandef;
3390         } else if (!nl80211_get_ap_channel(rdev, &params))
3391                 return -EINVAL;
3392
3393         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3394                                      wdev->iftype))
3395                 return -EINVAL;
3396
3397         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3398                 params.acl = parse_acl_data(&rdev->wiphy, info);
3399                 if (IS_ERR(params.acl))
3400                         return PTR_ERR(params.acl);
3401         }
3402
3403         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3404                 params.smps_mode =
3405                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3406                 switch (params.smps_mode) {
3407                 case NL80211_SMPS_OFF:
3408                         break;
3409                 case NL80211_SMPS_STATIC:
3410                         if (!(rdev->wiphy.features &
3411                               NL80211_FEATURE_STATIC_SMPS))
3412                                 return -EINVAL;
3413                         break;
3414                 case NL80211_SMPS_DYNAMIC:
3415                         if (!(rdev->wiphy.features &
3416                               NL80211_FEATURE_DYNAMIC_SMPS))
3417                                 return -EINVAL;
3418                         break;
3419                 default:
3420                         return -EINVAL;
3421                 }
3422         } else {
3423                 params.smps_mode = NL80211_SMPS_OFF;
3424         }
3425
3426         wdev_lock(wdev);
3427         err = rdev_start_ap(rdev, dev, &params);
3428         if (!err) {
3429                 wdev->preset_chandef = params.chandef;
3430                 wdev->beacon_interval = params.beacon_interval;
3431                 wdev->chandef = params.chandef;
3432                 wdev->ssid_len = params.ssid_len;
3433                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3434         }
3435         wdev_unlock(wdev);
3436
3437         kfree(params.acl);
3438
3439         return err;
3440 }
3441
3442 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3443 {
3444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3445         struct net_device *dev = info->user_ptr[1];
3446         struct wireless_dev *wdev = dev->ieee80211_ptr;
3447         struct cfg80211_beacon_data params;
3448         int err;
3449
3450         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3451             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3452                 return -EOPNOTSUPP;
3453
3454         if (!rdev->ops->change_beacon)
3455                 return -EOPNOTSUPP;
3456
3457         if (!wdev->beacon_interval)
3458                 return -EINVAL;
3459
3460         err = nl80211_parse_beacon(info->attrs, &params);
3461         if (err)
3462                 return err;
3463
3464         wdev_lock(wdev);
3465         err = rdev_change_beacon(rdev, dev, &params);
3466         wdev_unlock(wdev);
3467
3468         return err;
3469 }
3470
3471 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3472 {
3473         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3474         struct net_device *dev = info->user_ptr[1];
3475
3476         return cfg80211_stop_ap(rdev, dev, false);
3477 }
3478
3479 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3480         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3481         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3482         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3483         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3484         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3485         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3486 };
3487
3488 static int parse_station_flags(struct genl_info *info,
3489                                enum nl80211_iftype iftype,
3490                                struct station_parameters *params)
3491 {
3492         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3493         struct nlattr *nla;
3494         int flag;
3495
3496         /*
3497          * Try parsing the new attribute first so userspace
3498          * can specify both for older kernels.
3499          */
3500         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3501         if (nla) {
3502                 struct nl80211_sta_flag_update *sta_flags;
3503
3504                 sta_flags = nla_data(nla);
3505                 params->sta_flags_mask = sta_flags->mask;
3506                 params->sta_flags_set = sta_flags->set;
3507                 params->sta_flags_set &= params->sta_flags_mask;
3508                 if ((params->sta_flags_mask |
3509                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3510                         return -EINVAL;
3511                 return 0;
3512         }
3513
3514         /* if present, parse the old attribute */
3515
3516         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3517         if (!nla)
3518                 return 0;
3519
3520         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3521                              nla, sta_flags_policy))
3522                 return -EINVAL;
3523
3524         /*
3525          * Only allow certain flags for interface types so that
3526          * other attributes are silently ignored. Remember that
3527          * this is backward compatibility code with old userspace
3528          * and shouldn't be hit in other cases anyway.
3529          */
3530         switch (iftype) {
3531         case NL80211_IFTYPE_AP:
3532         case NL80211_IFTYPE_AP_VLAN:
3533         case NL80211_IFTYPE_P2P_GO:
3534                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3535                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3536                                          BIT(NL80211_STA_FLAG_WME) |
3537                                          BIT(NL80211_STA_FLAG_MFP);
3538                 break;
3539         case NL80211_IFTYPE_P2P_CLIENT:
3540         case NL80211_IFTYPE_STATION:
3541                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3542                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3543                 break;
3544         case NL80211_IFTYPE_MESH_POINT:
3545                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3546                                          BIT(NL80211_STA_FLAG_MFP) |
3547                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3548         default:
3549                 return -EINVAL;
3550         }
3551
3552         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3553                 if (flags[flag]) {
3554                         params->sta_flags_set |= (1<<flag);
3555
3556                         /* no longer support new API additions in old API */
3557                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3558                                 return -EINVAL;
3559                 }
3560         }
3561
3562         return 0;
3563 }
3564
3565 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3566                                  int attr)
3567 {
3568         struct nlattr *rate;
3569         u32 bitrate;
3570         u16 bitrate_compat;
3571
3572         rate = nla_nest_start(msg, attr);
3573         if (!rate)
3574                 return false;
3575
3576         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3577         bitrate = cfg80211_calculate_bitrate(info);
3578         /* report 16-bit bitrate only if we can */
3579         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3580         if (bitrate > 0 &&
3581             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3582                 return false;
3583         if (bitrate_compat > 0 &&
3584             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3585                 return false;
3586
3587         if (info->flags & RATE_INFO_FLAGS_MCS) {
3588                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3589                         return false;
3590                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3591                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3592                         return false;
3593                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3594                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3595                         return false;
3596         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3597                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3598                         return false;
3599                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3600                         return false;
3601                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3602                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3603                         return false;
3604                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3605                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3606                         return false;
3607                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3608                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3609                         return false;
3610                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3611                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3612                         return false;
3613                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3614                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3615                         return false;
3616         }
3617
3618         nla_nest_end(msg, rate);
3619         return true;
3620 }
3621
3622 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3623                                int id)
3624 {
3625         void *attr;
3626         int i = 0;
3627
3628         if (!mask)
3629                 return true;
3630
3631         attr = nla_nest_start(msg, id);
3632         if (!attr)
3633                 return false;
3634
3635         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3636                 if (!(mask & BIT(i)))
3637                         continue;
3638
3639                 if (nla_put_u8(msg, i, signal[i]))
3640                         return false;
3641         }
3642
3643         nla_nest_end(msg, attr);
3644
3645         return true;
3646 }
3647
3648 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3649                                 int flags,
3650                                 struct cfg80211_registered_device *rdev,
3651                                 struct net_device *dev,
3652                                 const u8 *mac_addr, struct station_info *sinfo)
3653 {
3654         void *hdr;
3655         struct nlattr *sinfoattr, *bss_param;
3656
3657         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3658         if (!hdr)
3659                 return -1;
3660
3661         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3662             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3663             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3664                 goto nla_put_failure;
3665
3666         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3667         if (!sinfoattr)
3668                 goto nla_put_failure;
3669         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3670             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3671                         sinfo->connected_time))
3672                 goto nla_put_failure;
3673         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3674             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3675                         sinfo->inactive_time))
3676                 goto nla_put_failure;
3677         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3678                               STATION_INFO_RX_BYTES64)) &&
3679             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3680                         (u32)sinfo->rx_bytes))
3681                 goto nla_put_failure;
3682         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3683                               STATION_INFO_TX_BYTES64)) &&
3684             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3685                         (u32)sinfo->tx_bytes))
3686                 goto nla_put_failure;
3687         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3688             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3689                         sinfo->rx_bytes))
3690                 goto nla_put_failure;
3691         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3692             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3693                         sinfo->tx_bytes))
3694                 goto nla_put_failure;
3695         if ((sinfo->filled & STATION_INFO_LLID) &&
3696             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3697                 goto nla_put_failure;
3698         if ((sinfo->filled & STATION_INFO_PLID) &&
3699             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3700                 goto nla_put_failure;
3701         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3702             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3703                        sinfo->plink_state))
3704                 goto nla_put_failure;
3705         switch (rdev->wiphy.signal_type) {
3706         case CFG80211_SIGNAL_TYPE_MBM:
3707                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3708                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3709                                sinfo->signal))
3710                         goto nla_put_failure;
3711                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3712                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3713                                sinfo->signal_avg))
3714                         goto nla_put_failure;
3715                 break;
3716         default:
3717                 break;
3718         }
3719         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3720                 if (!nl80211_put_signal(msg, sinfo->chains,
3721                                         sinfo->chain_signal,
3722                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3723                         goto nla_put_failure;
3724         }
3725         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3726                 if (!nl80211_put_signal(msg, sinfo->chains,
3727                                         sinfo->chain_signal_avg,
3728                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3729                         goto nla_put_failure;
3730         }
3731         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3732                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3733                                           NL80211_STA_INFO_TX_BITRATE))
3734                         goto nla_put_failure;
3735         }
3736         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3737                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3738                                           NL80211_STA_INFO_RX_BITRATE))
3739                         goto nla_put_failure;
3740         }
3741         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3742             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3743                         sinfo->rx_packets))
3744                 goto nla_put_failure;
3745         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3746             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3747                         sinfo->tx_packets))
3748                 goto nla_put_failure;
3749         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3750             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3751                         sinfo->tx_retries))
3752                 goto nla_put_failure;
3753         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3754             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3755                         sinfo->tx_failed))
3756                 goto nla_put_failure;
3757         if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3758             nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3759                         sinfo->expected_throughput))
3760                 goto nla_put_failure;
3761         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3762             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3763                         sinfo->beacon_loss_count))
3764                 goto nla_put_failure;
3765         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3766             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3767                         sinfo->local_pm))
3768                 goto nla_put_failure;
3769         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3770             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3771                         sinfo->peer_pm))
3772                 goto nla_put_failure;
3773         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3774             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3775                         sinfo->nonpeer_pm))
3776                 goto nla_put_failure;
3777         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3778                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3779                 if (!bss_param)
3780                         goto nla_put_failure;
3781
3782                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3783                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3784                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3785                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3786                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3787                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3788                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3789                                sinfo->bss_param.dtim_period) ||
3790                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3791                                 sinfo->bss_param.beacon_interval))
3792                         goto nla_put_failure;
3793
3794                 nla_nest_end(msg, bss_param);
3795         }
3796         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3797             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3798                     sizeof(struct nl80211_sta_flag_update),
3799                     &sinfo->sta_flags))
3800                 goto nla_put_failure;
3801         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3802                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3803                             sinfo->t_offset))
3804                 goto nla_put_failure;
3805         nla_nest_end(msg, sinfoattr);
3806
3807         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3808             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3809                     sinfo->assoc_req_ies))
3810                 goto nla_put_failure;
3811
3812         return genlmsg_end(msg, hdr);
3813
3814  nla_put_failure:
3815         genlmsg_cancel(msg, hdr);
3816         return -EMSGSIZE;
3817 }
3818
3819 static int nl80211_dump_station(struct sk_buff *skb,
3820                                 struct netlink_callback *cb)
3821 {
3822         struct station_info sinfo;
3823         struct cfg80211_registered_device *rdev;
3824         struct wireless_dev *wdev;
3825         u8 mac_addr[ETH_ALEN];
3826         int sta_idx = cb->args[2];
3827         int err;
3828
3829         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3830         if (err)
3831                 return err;
3832
3833         if (!wdev->netdev) {
3834                 err = -EINVAL;
3835                 goto out_err;
3836         }
3837
3838         if (!rdev->ops->dump_station) {
3839                 err = -EOPNOTSUPP;
3840                 goto out_err;
3841         }
3842
3843         while (1) {
3844                 memset(&sinfo, 0, sizeof(sinfo));
3845                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3846                                         mac_addr, &sinfo);
3847                 if (err == -ENOENT)
3848                         break;
3849                 if (err)
3850                         goto out_err;
3851
3852                 if (nl80211_send_station(skb,
3853                                 NETLINK_CB(cb->skb).portid,
3854                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3855                                 rdev, wdev->netdev, mac_addr,
3856                                 &sinfo) < 0)
3857                         goto out;
3858
3859                 sta_idx++;
3860         }
3861
3862
3863  out:
3864         cb->args[2] = sta_idx;
3865         err = skb->len;
3866  out_err:
3867         nl80211_finish_wdev_dump(rdev);
3868
3869         return err;
3870 }
3871
3872 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3873 {
3874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3875         struct net_device *dev = info->user_ptr[1];
3876         struct station_info sinfo;
3877         struct sk_buff *msg;
3878         u8 *mac_addr = NULL;
3879         int err;
3880
3881         memset(&sinfo, 0, sizeof(sinfo));
3882
3883         if (!info->attrs[NL80211_ATTR_MAC])
3884                 return -EINVAL;
3885
3886         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3887
3888         if (!rdev->ops->get_station)
3889                 return -EOPNOTSUPP;
3890
3891         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3892         if (err)
3893                 return err;
3894
3895         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3896         if (!msg)
3897                 return -ENOMEM;
3898
3899         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3900                                  rdev, dev, mac_addr, &sinfo) < 0) {
3901                 nlmsg_free(msg);
3902                 return -ENOBUFS;
3903         }
3904
3905         return genlmsg_reply(msg, info);
3906 }
3907
3908 int cfg80211_check_station_change(struct wiphy *wiphy,
3909                                   struct station_parameters *params,
3910                                   enum cfg80211_station_type statype)
3911 {
3912         if (params->listen_interval != -1)
3913                 return -EINVAL;
3914         if (params->aid &&
3915             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3916                 return -EINVAL;
3917
3918         /* When you run into this, adjust the code below for the new flag */
3919         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3920
3921         switch (statype) {
3922         case CFG80211_STA_MESH_PEER_KERNEL:
3923         case CFG80211_STA_MESH_PEER_USER:
3924                 /*
3925                  * No ignoring the TDLS flag here -- the userspace mesh
3926                  * code doesn't have the bug of including TDLS in the
3927                  * mask everywhere.
3928                  */
3929                 if (params->sta_flags_mask &
3930                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3931                                   BIT(NL80211_STA_FLAG_MFP) |
3932                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3933                         return -EINVAL;
3934                 break;
3935         case CFG80211_STA_TDLS_PEER_SETUP:
3936         case CFG80211_STA_TDLS_PEER_ACTIVE:
3937                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3938                         return -EINVAL;
3939                 /* ignore since it can't change */
3940                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3941                 break;
3942         default:
3943                 /* disallow mesh-specific things */
3944                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3945                         return -EINVAL;
3946                 if (params->local_pm)
3947                         return -EINVAL;
3948                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3949                         return -EINVAL;
3950         }
3951
3952         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3953             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3954                 /* TDLS can't be set, ... */
3955                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3956                         return -EINVAL;
3957                 /*
3958                  * ... but don't bother the driver with it. This works around
3959                  * a hostapd/wpa_supplicant issue -- it always includes the
3960                  * TLDS_PEER flag in the mask even for AP mode.
3961                  */
3962                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3963         }
3964
3965         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3966                 /* reject other things that can't change */
3967                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3968                         return -EINVAL;
3969                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3970                         return -EINVAL;
3971                 if (params->supported_rates)
3972                         return -EINVAL;
3973                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3974                         return -EINVAL;
3975         }
3976
3977         if (statype != CFG80211_STA_AP_CLIENT) {
3978                 if (params->vlan)
3979                         return -EINVAL;
3980         }
3981
3982         switch (statype) {
3983         case CFG80211_STA_AP_MLME_CLIENT:
3984                 /* Use this only for authorizing/unauthorizing a station */
3985                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3986                         return -EOPNOTSUPP;
3987                 break;
3988         case CFG80211_STA_AP_CLIENT:
3989                 /* accept only the listed bits */
3990                 if (params->sta_flags_mask &
3991                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3992                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3993                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3994                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3995                                   BIT(NL80211_STA_FLAG_WME) |
3996                                   BIT(NL80211_STA_FLAG_MFP)))
3997                         return -EINVAL;
3998
3999                 /* but authenticated/associated only if driver handles it */
4000                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4001                     params->sta_flags_mask &
4002                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4003                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4004                         return -EINVAL;
4005                 break;
4006         case CFG80211_STA_IBSS:
4007         case CFG80211_STA_AP_STA:
4008                 /* reject any changes other than AUTHORIZED */
4009                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4010                         return -EINVAL;
4011                 break;
4012         case CFG80211_STA_TDLS_PEER_SETUP:
4013                 /* reject any changes other than AUTHORIZED or WME */
4014                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4015                                                BIT(NL80211_STA_FLAG_WME)))
4016                         return -EINVAL;
4017                 /* force (at least) rates when authorizing */
4018                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4019                     !params->supported_rates)
4020                         return -EINVAL;
4021                 break;
4022         case CFG80211_STA_TDLS_PEER_ACTIVE:
4023                 /* reject any changes */
4024                 return -EINVAL;
4025         case CFG80211_STA_MESH_PEER_KERNEL:
4026                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4027                         return -EINVAL;
4028                 break;
4029         case CFG80211_STA_MESH_PEER_USER:
4030                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4031                         return -EINVAL;
4032                 break;
4033         }
4034
4035         return 0;
4036 }
4037 EXPORT_SYMBOL(cfg80211_check_station_change);
4038
4039 /*
4040  * Get vlan interface making sure it is running and on the right wiphy.
4041  */
4042 static struct net_device *get_vlan(struct genl_info *info,
4043                                    struct cfg80211_registered_device *rdev)
4044 {
4045         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4046         struct net_device *v;
4047         int ret;
4048
4049         if (!vlanattr)
4050                 return NULL;
4051
4052         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4053         if (!v)
4054                 return ERR_PTR(-ENODEV);
4055
4056         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4057                 ret = -EINVAL;
4058                 goto error;
4059         }
4060
4061         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4062             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4063             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4064                 ret = -EINVAL;
4065                 goto error;
4066         }
4067
4068         if (!netif_running(v)) {
4069                 ret = -ENETDOWN;
4070                 goto error;
4071         }
4072
4073         return v;
4074  error:
4075         dev_put(v);
4076         return ERR_PTR(ret);
4077 }
4078
4079 static const struct nla_policy
4080 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4081         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4082         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4083 };
4084
4085 static int nl80211_parse_sta_wme(struct genl_info *info,
4086                                  struct station_parameters *params)
4087 {
4088         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4089         struct nlattr *nla;
4090         int err;
4091
4092         /* parse WME attributes if present */
4093         if (!info->attrs[NL80211_ATTR_STA_WME])
4094                 return 0;
4095
4096         nla = info->attrs[NL80211_ATTR_STA_WME];
4097         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4098                                nl80211_sta_wme_policy);
4099         if (err)
4100                 return err;
4101
4102         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4103                 params->uapsd_queues = nla_get_u8(
4104                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4105         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4106                 return -EINVAL;
4107
4108         if (tb[NL80211_STA_WME_MAX_SP])
4109                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4110
4111         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4112                 return -EINVAL;
4113
4114         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4115
4116         return 0;
4117 }
4118
4119 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4120                                       struct station_parameters *params)
4121 {
4122         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4123                 params->supported_channels =
4124                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4125                 params->supported_channels_len =
4126                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4127                 /*
4128                  * Need to include at least one (first channel, number of
4129                  * channels) tuple for each subband, and must have proper
4130                  * tuples for the rest of the data as well.
4131                  */
4132                 if (params->supported_channels_len < 2)
4133                         return -EINVAL;
4134                 if (params->supported_channels_len % 2)
4135                         return -EINVAL;
4136         }
4137
4138         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4139                 params->supported_oper_classes =
4140                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4141                 params->supported_oper_classes_len =
4142                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4143                 /*
4144                  * The value of the Length field of the Supported Operating
4145                  * Classes element is between 2 and 253.
4146                  */
4147                 if (params->supported_oper_classes_len < 2 ||
4148                     params->supported_oper_classes_len > 253)
4149                         return -EINVAL;
4150         }
4151         return 0;
4152 }
4153
4154 static int nl80211_set_station_tdls(struct genl_info *info,
4155                                     struct station_parameters *params)
4156 {
4157         int err;
4158         /* Dummy STA entry gets updated once the peer capabilities are known */
4159         if (info->attrs[NL80211_ATTR_PEER_AID])
4160                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4161         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4162                 params->ht_capa =
4163                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4164         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4165                 params->vht_capa =
4166                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4167
4168         err = nl80211_parse_sta_channel_info(info, params);
4169         if (err)
4170                 return err;
4171
4172         return nl80211_parse_sta_wme(info, params);
4173 }
4174
4175 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4176 {
4177         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4178         struct net_device *dev = info->user_ptr[1];
4179         struct station_parameters params;
4180         u8 *mac_addr;
4181         int err;
4182
4183         memset(&params, 0, sizeof(params));
4184
4185         params.listen_interval = -1;
4186
4187         if (!rdev->ops->change_station)
4188                 return -EOPNOTSUPP;
4189
4190         if (info->attrs[NL80211_ATTR_STA_AID])
4191                 return -EINVAL;
4192
4193         if (!info->attrs[NL80211_ATTR_MAC])
4194                 return -EINVAL;
4195
4196         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4197
4198         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4199                 params.supported_rates =
4200                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4201                 params.supported_rates_len =
4202                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4203         }
4204
4205         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4206                 params.capability =
4207                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4208                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4209         }
4210
4211         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4212                 params.ext_capab =
4213                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4214                 params.ext_capab_len =
4215                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4216         }
4217
4218         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4219                 return -EINVAL;
4220
4221         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4222                 return -EINVAL;
4223
4224         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4225                 params.plink_action =
4226                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4227                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4228                         return -EINVAL;
4229         }
4230
4231         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4232                 params.plink_state =
4233                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4234                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4235                         return -EINVAL;
4236                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4237         }
4238
4239         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4240                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4241                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4242
4243                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4244                     pm > NL80211_MESH_POWER_MAX)
4245                         return -EINVAL;
4246
4247                 params.local_pm = pm;
4248         }
4249
4250         /* Include parameters for TDLS peer (will check later) */
4251         err = nl80211_set_station_tdls(info, &params);
4252         if (err)
4253                 return err;
4254
4255         params.vlan = get_vlan(info, rdev);
4256         if (IS_ERR(params.vlan))
4257                 return PTR_ERR(params.vlan);
4258
4259         switch (dev->ieee80211_ptr->iftype) {
4260         case NL80211_IFTYPE_AP:
4261         case NL80211_IFTYPE_AP_VLAN:
4262         case NL80211_IFTYPE_P2P_GO:
4263         case NL80211_IFTYPE_P2P_CLIENT:
4264         case NL80211_IFTYPE_STATION:
4265         case NL80211_IFTYPE_ADHOC:
4266         case NL80211_IFTYPE_MESH_POINT:
4267                 break;
4268         default:
4269                 err = -EOPNOTSUPP;
4270                 goto out_put_vlan;
4271         }
4272
4273         /* driver will call cfg80211_check_station_change() */
4274         err = rdev_change_station(rdev, dev, mac_addr, &params);
4275
4276  out_put_vlan:
4277         if (params.vlan)
4278                 dev_put(params.vlan);
4279
4280         return err;
4281 }
4282
4283 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4284 {
4285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4286         int err;
4287         struct net_device *dev = info->user_ptr[1];
4288         struct station_parameters params;
4289         u8 *mac_addr = NULL;
4290
4291         memset(&params, 0, sizeof(params));
4292
4293         if (!rdev->ops->add_station)
4294                 return -EOPNOTSUPP;
4295
4296         if (!info->attrs[NL80211_ATTR_MAC])
4297                 return -EINVAL;
4298
4299         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4300                 return -EINVAL;
4301
4302         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4303                 return -EINVAL;
4304
4305         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4306             !info->attrs[NL80211_ATTR_PEER_AID])
4307                 return -EINVAL;
4308
4309         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4310         params.supported_rates =
4311                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4312         params.supported_rates_len =
4313                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4314         params.listen_interval =
4315                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4316
4317         if (info->attrs[NL80211_ATTR_PEER_AID])
4318                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4319         else
4320                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4321         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4322                 return -EINVAL;
4323
4324         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4325                 params.capability =
4326                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4327                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4328         }
4329
4330         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4331                 params.ext_capab =
4332                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4333                 params.ext_capab_len =
4334                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4335         }
4336
4337         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4338                 params.ht_capa =
4339                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4340
4341         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4342                 params.vht_capa =
4343                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4344
4345         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4346                 params.opmode_notif_used = true;
4347                 params.opmode_notif =
4348                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4349         }
4350
4351         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4352                 params.plink_action =
4353                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4354                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4355                         return -EINVAL;
4356         }
4357
4358         err = nl80211_parse_sta_channel_info(info, &params);
4359         if (err)
4360                 return err;
4361
4362         err = nl80211_parse_sta_wme(info, &params);
4363         if (err)
4364                 return err;
4365
4366         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4367                 return -EINVAL;
4368
4369         /* When you run into this, adjust the code below for the new flag */
4370         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4371
4372         switch (dev->ieee80211_ptr->iftype) {
4373         case NL80211_IFTYPE_AP:
4374         case NL80211_IFTYPE_AP_VLAN:
4375         case NL80211_IFTYPE_P2P_GO:
4376                 /* ignore WME attributes if iface/sta is not capable */
4377                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4378                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4379                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4380
4381                 /* TDLS peers cannot be added */
4382                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4383                     info->attrs[NL80211_ATTR_PEER_AID])
4384                         return -EINVAL;
4385                 /* but don't bother the driver with it */
4386                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4387
4388                 /* allow authenticated/associated only if driver handles it */
4389                 if (!(rdev->wiphy.features &
4390                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4391                     params.sta_flags_mask &
4392                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4393                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4394                         return -EINVAL;
4395
4396                 /* must be last in here for error handling */
4397                 params.vlan = get_vlan(info, rdev);
4398                 if (IS_ERR(params.vlan))
4399                         return PTR_ERR(params.vlan);
4400                 break;
4401         case NL80211_IFTYPE_MESH_POINT:
4402                 /* ignore uAPSD data */
4403                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4404
4405                 /* associated is disallowed */
4406                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4407                         return -EINVAL;
4408                 /* TDLS peers cannot be added */
4409                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4410                     info->attrs[NL80211_ATTR_PEER_AID])
4411                         return -EINVAL;
4412                 break;
4413         case NL80211_IFTYPE_STATION:
4414         case NL80211_IFTYPE_P2P_CLIENT:
4415                 /* ignore uAPSD data */
4416                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4417
4418                 /* these are disallowed */
4419                 if (params.sta_flags_mask &
4420                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4421                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4422                         return -EINVAL;
4423                 /* Only TDLS peers can be added */
4424                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4425                         return -EINVAL;
4426                 /* Can only add if TDLS ... */
4427                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4428                         return -EOPNOTSUPP;
4429                 /* ... with external setup is supported */
4430                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4431                         return -EOPNOTSUPP;
4432                 /*
4433                  * Older wpa_supplicant versions always mark the TDLS peer
4434                  * as authorized, but it shouldn't yet be.
4435                  */
4436                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4437                 break;
4438         default:
4439                 return -EOPNOTSUPP;
4440         }
4441
4442         /* be aware of params.vlan when changing code here */
4443
4444         err = rdev_add_station(rdev, dev, mac_addr, &params);
4445
4446         if (params.vlan)
4447                 dev_put(params.vlan);
4448         return err;
4449 }
4450
4451 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4452 {
4453         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4454         struct net_device *dev = info->user_ptr[1];
4455         struct station_del_parameters params;
4456
4457         memset(&params, 0, sizeof(params));
4458
4459         if (info->attrs[NL80211_ATTR_MAC])
4460                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4461
4462         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4463             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4464             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4465             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4466                 return -EINVAL;
4467
4468         if (!rdev->ops->del_station)
4469                 return -EOPNOTSUPP;
4470
4471         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4472                 params.subtype =
4473                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4474                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4475                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4476                         return -EINVAL;
4477         } else {
4478                 /* Default to Deauthentication frame */
4479                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4480         }
4481
4482         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4483                 params.reason_code =
4484                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4485                 if (params.reason_code == 0)
4486                         return -EINVAL; /* 0 is reserved */
4487         } else {
4488                 /* Default to reason code 2 */
4489                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4490         }
4491
4492         return rdev_del_station(rdev, dev, &params);
4493 }
4494
4495 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4496                                 int flags, struct net_device *dev,
4497                                 u8 *dst, u8 *next_hop,
4498                                 struct mpath_info *pinfo)
4499 {
4500         void *hdr;
4501         struct nlattr *pinfoattr;
4502
4503         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4504         if (!hdr)
4505                 return -1;
4506
4507         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4508             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4509             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4510             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4511                 goto nla_put_failure;
4512
4513         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4514         if (!pinfoattr)
4515                 goto nla_put_failure;
4516         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4517             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4518                         pinfo->frame_qlen))
4519                 goto nla_put_failure;
4520         if (((pinfo->filled & MPATH_INFO_SN) &&
4521              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4522             ((pinfo->filled & MPATH_INFO_METRIC) &&
4523              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4524                          pinfo->metric)) ||
4525             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4526              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4527                          pinfo->exptime)) ||
4528             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4529              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4530                         pinfo->flags)) ||
4531             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4532              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4533                          pinfo->discovery_timeout)) ||
4534             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4535              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4536                         pinfo->discovery_retries)))
4537                 goto nla_put_failure;
4538
4539         nla_nest_end(msg, pinfoattr);
4540
4541         return genlmsg_end(msg, hdr);
4542
4543  nla_put_failure:
4544         genlmsg_cancel(msg, hdr);
4545         return -EMSGSIZE;
4546 }
4547
4548 static int nl80211_dump_mpath(struct sk_buff *skb,
4549                               struct netlink_callback *cb)
4550 {
4551         struct mpath_info pinfo;
4552         struct cfg80211_registered_device *rdev;
4553         struct wireless_dev *wdev;
4554         u8 dst[ETH_ALEN];
4555         u8 next_hop[ETH_ALEN];
4556         int path_idx = cb->args[2];
4557         int err;
4558
4559         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4560         if (err)
4561                 return err;
4562
4563         if (!rdev->ops->dump_mpath) {
4564                 err = -EOPNOTSUPP;
4565                 goto out_err;
4566         }
4567
4568         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4569                 err = -EOPNOTSUPP;
4570                 goto out_err;
4571         }
4572
4573         while (1) {
4574                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4575                                       next_hop, &pinfo);
4576                 if (err == -ENOENT)
4577                         break;
4578                 if (err)
4579                         goto out_err;
4580
4581                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4582                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4583                                        wdev->netdev, dst, next_hop,
4584                                        &pinfo) < 0)
4585                         goto out;
4586
4587                 path_idx++;
4588         }
4589
4590
4591  out:
4592         cb->args[2] = path_idx;
4593         err = skb->len;
4594  out_err:
4595         nl80211_finish_wdev_dump(rdev);
4596         return err;
4597 }
4598
4599 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4600 {
4601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4602         int err;
4603         struct net_device *dev = info->user_ptr[1];
4604         struct mpath_info pinfo;
4605         struct sk_buff *msg;
4606         u8 *dst = NULL;
4607         u8 next_hop[ETH_ALEN];
4608
4609         memset(&pinfo, 0, sizeof(pinfo));
4610
4611         if (!info->attrs[NL80211_ATTR_MAC])
4612                 return -EINVAL;
4613
4614         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4615
4616         if (!rdev->ops->get_mpath)
4617                 return -EOPNOTSUPP;
4618
4619         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4620                 return -EOPNOTSUPP;
4621
4622         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4623         if (err)
4624                 return err;
4625
4626         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4627         if (!msg)
4628                 return -ENOMEM;
4629
4630         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4631                                  dev, dst, next_hop, &pinfo) < 0) {
4632                 nlmsg_free(msg);
4633                 return -ENOBUFS;
4634         }
4635
4636         return genlmsg_reply(msg, info);
4637 }
4638
4639 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4640 {
4641         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4642         struct net_device *dev = info->user_ptr[1];
4643         u8 *dst = NULL;
4644         u8 *next_hop = NULL;
4645
4646         if (!info->attrs[NL80211_ATTR_MAC])
4647                 return -EINVAL;
4648
4649         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4650                 return -EINVAL;
4651
4652         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4653         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4654
4655         if (!rdev->ops->change_mpath)
4656                 return -EOPNOTSUPP;
4657
4658         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4659                 return -EOPNOTSUPP;
4660
4661         return rdev_change_mpath(rdev, dev, dst, next_hop);
4662 }
4663
4664 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4665 {
4666         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4667         struct net_device *dev = info->user_ptr[1];
4668         u8 *dst = NULL;
4669         u8 *next_hop = NULL;
4670
4671         if (!info->attrs[NL80211_ATTR_MAC])
4672                 return -EINVAL;
4673
4674         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4675                 return -EINVAL;
4676
4677         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4678         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4679
4680         if (!rdev->ops->add_mpath)
4681                 return -EOPNOTSUPP;
4682
4683         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4684                 return -EOPNOTSUPP;
4685
4686         return rdev_add_mpath(rdev, dev, dst, next_hop);
4687 }
4688
4689 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4690 {
4691         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4692         struct net_device *dev = info->user_ptr[1];
4693         u8 *dst = NULL;
4694
4695         if (info->attrs[NL80211_ATTR_MAC])
4696                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4697
4698         if (!rdev->ops->del_mpath)
4699                 return -EOPNOTSUPP;
4700
4701         return rdev_del_mpath(rdev, dev, dst);
4702 }
4703
4704 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4705 {
4706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4707         int err;
4708         struct net_device *dev = info->user_ptr[1];
4709         struct mpath_info pinfo;
4710         struct sk_buff *msg;
4711         u8 *dst = NULL;
4712         u8 mpp[ETH_ALEN];
4713
4714         memset(&pinfo, 0, sizeof(pinfo));
4715
4716         if (!info->attrs[NL80211_ATTR_MAC])
4717                 return -EINVAL;
4718
4719         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4720
4721         if (!rdev->ops->get_mpp)
4722                 return -EOPNOTSUPP;
4723
4724         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4725                 return -EOPNOTSUPP;
4726
4727         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4728         if (err)
4729                 return err;
4730
4731         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4732         if (!msg)
4733                 return -ENOMEM;
4734
4735         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4736                                dev, dst, mpp, &pinfo) < 0) {
4737                 nlmsg_free(msg);
4738                 return -ENOBUFS;
4739         }
4740
4741         return genlmsg_reply(msg, info);
4742 }
4743
4744 static int nl80211_dump_mpp(struct sk_buff *skb,
4745                             struct netlink_callback *cb)
4746 {
4747         struct mpath_info pinfo;
4748         struct cfg80211_registered_device *rdev;
4749         struct wireless_dev *wdev;
4750         u8 dst[ETH_ALEN];
4751         u8 mpp[ETH_ALEN];
4752         int path_idx = cb->args[2];
4753         int err;
4754
4755         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4756         if (err)
4757                 return err;
4758
4759         if (!rdev->ops->dump_mpp) {
4760                 err = -EOPNOTSUPP;
4761                 goto out_err;
4762         }
4763
4764         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4765                 err = -EOPNOTSUPP;
4766                 goto out_err;
4767         }
4768
4769         while (1) {
4770                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4771                                     mpp, &pinfo);
4772                 if (err == -ENOENT)
4773                         break;
4774                 if (err)
4775                         goto out_err;
4776
4777                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4778                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4779                                        wdev->netdev, dst, mpp,
4780                                        &pinfo) < 0)
4781                         goto out;
4782
4783                 path_idx++;
4784         }
4785
4786  out:
4787         cb->args[2] = path_idx;
4788         err = skb->len;
4789  out_err:
4790         nl80211_finish_wdev_dump(rdev);
4791         return err;
4792 }
4793
4794 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4795 {
4796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4797         struct net_device *dev = info->user_ptr[1];
4798         struct wireless_dev *wdev = dev->ieee80211_ptr;
4799         struct bss_parameters params;
4800         int err;
4801
4802         memset(&params, 0, sizeof(params));
4803         /* default to not changing parameters */
4804         params.use_cts_prot = -1;
4805         params.use_short_preamble = -1;
4806         params.use_short_slot_time = -1;
4807         params.ap_isolate = -1;
4808         params.ht_opmode = -1;
4809         params.p2p_ctwindow = -1;
4810         params.p2p_opp_ps = -1;
4811
4812         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4813                 params.use_cts_prot =
4814                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4815         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4816                 params.use_short_preamble =
4817                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4818         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4819                 params.use_short_slot_time =
4820                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4821         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4822                 params.basic_rates =
4823                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4824                 params.basic_rates_len =
4825                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4826         }
4827         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4828                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4829         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4830                 params.ht_opmode =
4831                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4832
4833         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4834                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4835                         return -EINVAL;
4836                 params.p2p_ctwindow =
4837                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4838                 if (params.p2p_ctwindow < 0)
4839                         return -EINVAL;
4840                 if (params.p2p_ctwindow != 0 &&
4841                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4842                         return -EINVAL;
4843         }
4844
4845         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4846                 u8 tmp;
4847
4848                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4849                         return -EINVAL;
4850                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4851                 if (tmp > 1)
4852                         return -EINVAL;
4853                 params.p2p_opp_ps = tmp;
4854                 if (params.p2p_opp_ps &&
4855                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4856                         return -EINVAL;
4857         }
4858
4859         if (!rdev->ops->change_bss)
4860                 return -EOPNOTSUPP;
4861
4862         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4863             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4864                 return -EOPNOTSUPP;
4865
4866         wdev_lock(wdev);
4867         err = rdev_change_bss(rdev, dev, &params);
4868         wdev_unlock(wdev);
4869
4870         return err;
4871 }
4872
4873 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4874         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4875         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4876         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4877         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4878         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4879         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4880         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4881 };
4882
4883 static int parse_reg_rule(struct nlattr *tb[],
4884         struct ieee80211_reg_rule *reg_rule)
4885 {
4886         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4887         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4888
4889         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4890                 return -EINVAL;
4891         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4892                 return -EINVAL;
4893         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4894                 return -EINVAL;
4895         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4896                 return -EINVAL;
4897         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4898                 return -EINVAL;
4899
4900         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4901
4902         freq_range->start_freq_khz =
4903                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4904         freq_range->end_freq_khz =
4905                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4906         freq_range->max_bandwidth_khz =
4907                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4908
4909         power_rule->max_eirp =
4910                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4911
4912         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4913                 power_rule->max_antenna_gain =
4914                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4915
4916         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4917                 reg_rule->dfs_cac_ms =
4918                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4919
4920         return 0;
4921 }
4922
4923 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4924 {
4925         char *data = NULL;
4926         enum nl80211_user_reg_hint_type user_reg_hint_type;
4927
4928         /*
4929          * You should only get this when cfg80211 hasn't yet initialized
4930          * completely when built-in to the kernel right between the time
4931          * window between nl80211_init() and regulatory_init(), if that is
4932          * even possible.
4933          */
4934         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4935                 return -EINPROGRESS;
4936
4937         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4938                 user_reg_hint_type =
4939                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4940         else
4941                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4942
4943         switch (user_reg_hint_type) {
4944         case NL80211_USER_REG_HINT_USER:
4945         case NL80211_USER_REG_HINT_CELL_BASE:
4946                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4947                         return -EINVAL;
4948
4949                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4950                 return regulatory_hint_user(data, user_reg_hint_type);
4951         case NL80211_USER_REG_HINT_INDOOR:
4952                 return regulatory_hint_indoor_user();
4953         default:
4954                 return -EINVAL;
4955         }
4956 }
4957
4958 static int nl80211_get_mesh_config(struct sk_buff *skb,
4959                                    struct genl_info *info)
4960 {
4961         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4962         struct net_device *dev = info->user_ptr[1];
4963         struct wireless_dev *wdev = dev->ieee80211_ptr;
4964         struct mesh_config cur_params;
4965         int err = 0;
4966         void *hdr;
4967         struct nlattr *pinfoattr;
4968         struct sk_buff *msg;
4969
4970         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4971                 return -EOPNOTSUPP;
4972
4973         if (!rdev->ops->get_mesh_config)
4974                 return -EOPNOTSUPP;
4975
4976         wdev_lock(wdev);
4977         /* If not connected, get default parameters */
4978         if (!wdev->mesh_id_len)
4979                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4980         else
4981                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4982         wdev_unlock(wdev);
4983
4984         if (err)
4985                 return err;
4986
4987         /* Draw up a netlink message to send back */
4988         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4989         if (!msg)
4990                 return -ENOMEM;
4991         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4992                              NL80211_CMD_GET_MESH_CONFIG);
4993         if (!hdr)
4994                 goto out;
4995         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4996         if (!pinfoattr)
4997                 goto nla_put_failure;
4998         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4999             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5000                         cur_params.dot11MeshRetryTimeout) ||
5001             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5002                         cur_params.dot11MeshConfirmTimeout) ||
5003             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5004                         cur_params.dot11MeshHoldingTimeout) ||
5005             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5006                         cur_params.dot11MeshMaxPeerLinks) ||
5007             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5008                        cur_params.dot11MeshMaxRetries) ||
5009             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5010                        cur_params.dot11MeshTTL) ||
5011             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5012                        cur_params.element_ttl) ||
5013             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5014                        cur_params.auto_open_plinks) ||
5015             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5016                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5017             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5018                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5019             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5020                         cur_params.path_refresh_time) ||
5021             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5022                         cur_params.min_discovery_timeout) ||
5023             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5024                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5025             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5026                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5027             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5028                         cur_params.dot11MeshHWMPperrMinInterval) ||
5029             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5030                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5031             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5032                        cur_params.dot11MeshHWMPRootMode) ||
5033             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5034                         cur_params.dot11MeshHWMPRannInterval) ||
5035             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5036                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5037             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5038                        cur_params.dot11MeshForwarding) ||
5039             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5040                         cur_params.rssi_threshold) ||
5041             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5042                         cur_params.ht_opmode) ||
5043             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5044                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5045             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5046                         cur_params.dot11MeshHWMProotInterval) ||
5047             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5048                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5049             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5050                         cur_params.power_mode) ||
5051             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5052                         cur_params.dot11MeshAwakeWindowDuration) ||
5053             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5054                         cur_params.plink_timeout))
5055                 goto nla_put_failure;
5056         nla_nest_end(msg, pinfoattr);
5057         genlmsg_end(msg, hdr);
5058         return genlmsg_reply(msg, info);
5059
5060  nla_put_failure:
5061         genlmsg_cancel(msg, hdr);
5062  out:
5063         nlmsg_free(msg);
5064         return -ENOBUFS;
5065 }
5066
5067 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5068         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5069         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5070         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5071         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5072         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5073         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5074         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5075         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5076         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5077         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5078         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5079         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5080         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5081         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5082         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5083         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5084         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5085         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5086         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5087         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5088         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5089         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5090         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5091         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5092         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5093         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5094         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5095         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5096 };
5097
5098 static const struct nla_policy
5099         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5100         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5101         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5102         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5103         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5104         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5105         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5106         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5107                                     .len = IEEE80211_MAX_DATA_LEN },
5108         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5109 };
5110
5111 static int nl80211_parse_mesh_config(struct genl_info *info,
5112                                      struct mesh_config *cfg,
5113                                      u32 *mask_out)
5114 {
5115         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5116         u32 mask = 0;
5117
5118 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5119 do {                                                                        \
5120         if (tb[attr]) {                                                     \
5121                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5122                         return -EINVAL;                                     \
5123                 cfg->param = fn(tb[attr]);                                  \
5124                 mask |= (1 << (attr - 1));                                  \
5125         }                                                                   \
5126 } while (0)
5127
5128
5129         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5130                 return -EINVAL;
5131         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5132                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5133                              nl80211_meshconf_params_policy))
5134                 return -EINVAL;
5135
5136         /* This makes sure that there aren't more than 32 mesh config
5137          * parameters (otherwise our bitfield scheme would not work.) */
5138         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5139
5140         /* Fill in the params struct */
5141         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5142                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5143                                   nla_get_u16);
5144         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5145                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5146                                   nla_get_u16);
5147         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5148                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5149                                   nla_get_u16);
5150         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5151                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5152                                   nla_get_u16);
5153         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5154                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5155                                   nla_get_u8);
5156         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5157                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5158         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5159                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5160                                   nla_get_u8);
5161         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5162                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5163                                   nla_get_u8);
5164         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5165                                   1, 255, mask,
5166                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5167                                   nla_get_u32);
5168         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5169                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5170                                   nla_get_u8);
5171         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5172                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5173                                   nla_get_u32);
5174         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5175                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5176                                   nla_get_u16);
5177         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5178                                   1, 65535, mask,
5179                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5180                                   nla_get_u32);
5181         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5182                                   1, 65535, mask,
5183                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5184                                   nla_get_u16);
5185         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5186                                   1, 65535, mask,
5187                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5188                                   nla_get_u16);
5189         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5190                                   dot11MeshHWMPnetDiameterTraversalTime,
5191                                   1, 65535, mask,
5192                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5193                                   nla_get_u16);
5194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5195                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5196                                   nla_get_u8);
5197         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5198                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5199                                   nla_get_u16);
5200         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5201                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5202                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5203                                   nla_get_u8);
5204         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5205                                   mask, NL80211_MESHCONF_FORWARDING,
5206                                   nla_get_u8);
5207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5208                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5209                                   nla_get_s32);
5210         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5211                                   mask, NL80211_MESHCONF_HT_OPMODE,
5212                                   nla_get_u16);
5213         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5214                                   1, 65535, mask,
5215                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5216                                   nla_get_u32);
5217         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5218                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5219                                   nla_get_u16);
5220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5221                                   dot11MeshHWMPconfirmationInterval,
5222                                   1, 65535, mask,
5223                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5224                                   nla_get_u16);
5225         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5226                                   NL80211_MESH_POWER_ACTIVE,
5227                                   NL80211_MESH_POWER_MAX,
5228                                   mask, NL80211_MESHCONF_POWER_MODE,
5229                                   nla_get_u32);
5230         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5231                                   0, 65535, mask,
5232                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5233         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5234                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5235                                   nla_get_u32);
5236         if (mask_out)
5237                 *mask_out = mask;
5238
5239         return 0;
5240
5241 #undef FILL_IN_MESH_PARAM_IF_SET
5242 }
5243
5244 static int nl80211_parse_mesh_setup(struct genl_info *info,
5245                                      struct mesh_setup *setup)
5246 {
5247         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5248         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5249
5250         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5251                 return -EINVAL;
5252         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5253                              info->attrs[NL80211_ATTR_MESH_SETUP],
5254                              nl80211_mesh_setup_params_policy))
5255                 return -EINVAL;
5256
5257         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5258                 setup->sync_method =
5259                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5260                  IEEE80211_SYNC_METHOD_VENDOR :
5261                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5262
5263         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5264                 setup->path_sel_proto =
5265                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5266                  IEEE80211_PATH_PROTOCOL_VENDOR :
5267                  IEEE80211_PATH_PROTOCOL_HWMP;
5268
5269         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5270                 setup->path_metric =
5271                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5272                  IEEE80211_PATH_METRIC_VENDOR :
5273                  IEEE80211_PATH_METRIC_AIRTIME;
5274
5275
5276         if (tb[NL80211_MESH_SETUP_IE]) {
5277                 struct nlattr *ieattr =
5278                         tb[NL80211_MESH_SETUP_IE];
5279                 if (!is_valid_ie_attr(ieattr))
5280                         return -EINVAL;
5281                 setup->ie = nla_data(ieattr);
5282                 setup->ie_len = nla_len(ieattr);
5283         }
5284         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5285             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5286                 return -EINVAL;
5287         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5288         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5289         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5290         if (setup->is_secure)
5291                 setup->user_mpm = true;
5292
5293         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5294                 if (!setup->user_mpm)
5295                         return -EINVAL;
5296                 setup->auth_id =
5297                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5298         }
5299
5300         return 0;
5301 }
5302
5303 static int nl80211_update_mesh_config(struct sk_buff *skb,
5304                                       struct genl_info *info)
5305 {
5306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5307         struct net_device *dev = info->user_ptr[1];
5308         struct wireless_dev *wdev = dev->ieee80211_ptr;
5309         struct mesh_config cfg;
5310         u32 mask;
5311         int err;
5312
5313         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5314                 return -EOPNOTSUPP;
5315
5316         if (!rdev->ops->update_mesh_config)
5317                 return -EOPNOTSUPP;
5318
5319         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5320         if (err)
5321                 return err;
5322
5323         wdev_lock(wdev);
5324         if (!wdev->mesh_id_len)
5325                 err = -ENOLINK;
5326
5327         if (!err)
5328                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5329
5330         wdev_unlock(wdev);
5331
5332         return err;
5333 }
5334
5335 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5336                               struct sk_buff *msg)
5337 {
5338         struct nlattr *nl_reg_rules;
5339         unsigned int i;
5340
5341         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5342             (regdom->dfs_region &&
5343              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5344                 goto nla_put_failure;
5345
5346         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5347         if (!nl_reg_rules)
5348                 goto nla_put_failure;
5349
5350         for (i = 0; i < regdom->n_reg_rules; i++) {
5351                 struct nlattr *nl_reg_rule;
5352                 const struct ieee80211_reg_rule *reg_rule;
5353                 const struct ieee80211_freq_range *freq_range;
5354                 const struct ieee80211_power_rule *power_rule;
5355                 unsigned int max_bandwidth_khz;
5356
5357                 reg_rule = &regdom->reg_rules[i];
5358                 freq_range = &reg_rule->freq_range;
5359                 power_rule = &reg_rule->power_rule;
5360
5361                 nl_reg_rule = nla_nest_start(msg, i);
5362                 if (!nl_reg_rule)
5363                         goto nla_put_failure;
5364
5365                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5366                 if (!max_bandwidth_khz)
5367                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5368                                                                   reg_rule);
5369
5370                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5371                                 reg_rule->flags) ||
5372                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5373                                 freq_range->start_freq_khz) ||
5374                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5375                                 freq_range->end_freq_khz) ||
5376                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5377                                 max_bandwidth_khz) ||
5378                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5379                                 power_rule->max_antenna_gain) ||
5380                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5381                                 power_rule->max_eirp) ||
5382                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5383                                 reg_rule->dfs_cac_ms))
5384                         goto nla_put_failure;
5385
5386                 nla_nest_end(msg, nl_reg_rule);
5387         }
5388
5389         nla_nest_end(msg, nl_reg_rules);
5390         return 0;
5391
5392 nla_put_failure:
5393         return -EMSGSIZE;
5394 }
5395
5396 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5397 {
5398         const struct ieee80211_regdomain *regdom = NULL;
5399         struct cfg80211_registered_device *rdev;
5400         struct wiphy *wiphy = NULL;
5401         struct sk_buff *msg;
5402         void *hdr;
5403
5404         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5405         if (!msg)
5406                 return -ENOBUFS;
5407
5408         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5409                              NL80211_CMD_GET_REG);
5410         if (!hdr)
5411                 goto put_failure;
5412
5413         if (info->attrs[NL80211_ATTR_WIPHY]) {
5414                 bool self_managed;
5415
5416                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5417                 if (IS_ERR(rdev)) {
5418                         nlmsg_free(msg);
5419                         return PTR_ERR(rdev);
5420                 }
5421
5422                 wiphy = &rdev->wiphy;
5423                 self_managed = wiphy->regulatory_flags &
5424                                REGULATORY_WIPHY_SELF_MANAGED;
5425                 regdom = get_wiphy_regdom(wiphy);
5426
5427                 /* a self-managed-reg device must have a private regdom */
5428                 if (WARN_ON(!regdom && self_managed)) {
5429                         nlmsg_free(msg);
5430                         return -EINVAL;
5431                 }
5432
5433                 if (regdom &&
5434                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5435                         goto nla_put_failure;
5436         }
5437
5438         if (!wiphy && reg_last_request_cell_base() &&
5439             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5440                         NL80211_USER_REG_HINT_CELL_BASE))
5441                 goto nla_put_failure;
5442
5443         rcu_read_lock();
5444
5445         if (!regdom)
5446                 regdom = rcu_dereference(cfg80211_regdomain);
5447
5448         if (nl80211_put_regdom(regdom, msg))
5449                 goto nla_put_failure_rcu;
5450
5451         rcu_read_unlock();
5452
5453         genlmsg_end(msg, hdr);
5454         return genlmsg_reply(msg, info);
5455
5456 nla_put_failure_rcu:
5457         rcu_read_unlock();
5458 nla_put_failure:
5459         genlmsg_cancel(msg, hdr);
5460 put_failure:
5461         nlmsg_free(msg);
5462         return -EMSGSIZE;
5463 }
5464
5465 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5466                                u32 seq, int flags, struct wiphy *wiphy,
5467                                const struct ieee80211_regdomain *regdom)
5468 {
5469         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5470                                    NL80211_CMD_GET_REG);
5471
5472         if (!hdr)
5473                 return -1;
5474
5475         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5476
5477         if (nl80211_put_regdom(regdom, msg))
5478                 goto nla_put_failure;
5479
5480         if (!wiphy && reg_last_request_cell_base() &&
5481             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5482                         NL80211_USER_REG_HINT_CELL_BASE))
5483                 goto nla_put_failure;
5484
5485         if (wiphy &&
5486             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5487                 goto nla_put_failure;
5488
5489         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5490             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5491                 goto nla_put_failure;
5492
5493         return genlmsg_end(msg, hdr);
5494
5495 nla_put_failure:
5496         genlmsg_cancel(msg, hdr);
5497         return -EMSGSIZE;
5498 }
5499
5500 static int nl80211_get_reg_dump(struct sk_buff *skb,
5501                                 struct netlink_callback *cb)
5502 {
5503         const struct ieee80211_regdomain *regdom = NULL;
5504         struct cfg80211_registered_device *rdev;
5505         int err, reg_idx, start = cb->args[2];
5506
5507         rtnl_lock();
5508
5509         if (cfg80211_regdomain && start == 0) {
5510                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5511                                           NLM_F_MULTI, NULL,
5512                                           rtnl_dereference(cfg80211_regdomain));
5513                 if (err < 0)
5514                         goto out_err;
5515         }
5516
5517         /* the global regdom is idx 0 */
5518         reg_idx = 1;
5519         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5520                 regdom = get_wiphy_regdom(&rdev->wiphy);
5521                 if (!regdom)
5522                         continue;
5523
5524                 if (++reg_idx <= start)
5525                         continue;
5526
5527                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5528                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5529                 if (err < 0) {
5530                         reg_idx--;
5531                         break;
5532                 }
5533         }
5534
5535         cb->args[2] = reg_idx;
5536         err = skb->len;
5537 out_err:
5538         rtnl_unlock();
5539         return err;
5540 }
5541
5542 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5543 {
5544         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5545         struct nlattr *nl_reg_rule;
5546         char *alpha2;
5547         int rem_reg_rules, r;
5548         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5549         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5550         struct ieee80211_regdomain *rd;
5551
5552         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5553                 return -EINVAL;
5554
5555         if (!info->attrs[NL80211_ATTR_REG_RULES])
5556                 return -EINVAL;
5557
5558         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5559
5560         if (info->attrs[NL80211_ATTR_DFS_REGION])
5561                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5562
5563         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5564                             rem_reg_rules) {
5565                 num_rules++;
5566                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5567                         return -EINVAL;
5568         }
5569
5570         if (!reg_is_valid_request(alpha2))
5571                 return -EINVAL;
5572
5573         size_of_regd = sizeof(struct ieee80211_regdomain) +
5574                        num_rules * sizeof(struct ieee80211_reg_rule);
5575
5576         rd = kzalloc(size_of_regd, GFP_KERNEL);
5577         if (!rd)
5578                 return -ENOMEM;
5579
5580         rd->n_reg_rules = num_rules;
5581         rd->alpha2[0] = alpha2[0];
5582         rd->alpha2[1] = alpha2[1];
5583
5584         /*
5585          * Disable DFS master mode if the DFS region was
5586          * not supported or known on this kernel.
5587          */
5588         if (reg_supported_dfs_region(dfs_region))
5589                 rd->dfs_region = dfs_region;
5590
5591         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5592                             rem_reg_rules) {
5593                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5594                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5595                               reg_rule_policy);
5596                 if (r)
5597                         goto bad_reg;
5598                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5599                 if (r)
5600                         goto bad_reg;
5601
5602                 rule_idx++;
5603
5604                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5605                         r = -EINVAL;
5606                         goto bad_reg;
5607                 }
5608         }
5609
5610         r = set_regdom(rd);
5611         /* set_regdom took ownership */
5612         rd = NULL;
5613
5614  bad_reg:
5615         kfree(rd);
5616         return r;
5617 }
5618
5619 static int validate_scan_freqs(struct nlattr *freqs)
5620 {
5621         struct nlattr *attr1, *attr2;
5622         int n_channels = 0, tmp1, tmp2;
5623
5624         nla_for_each_nested(attr1, freqs, tmp1) {
5625                 n_channels++;
5626                 /*
5627                  * Some hardware has a limited channel list for
5628                  * scanning, and it is pretty much nonsensical
5629                  * to scan for a channel twice, so disallow that
5630                  * and don't require drivers to check that the
5631                  * channel list they get isn't longer than what
5632                  * they can scan, as long as they can scan all
5633                  * the channels they registered at once.
5634                  */
5635                 nla_for_each_nested(attr2, freqs, tmp2)
5636                         if (attr1 != attr2 &&
5637                             nla_get_u32(attr1) == nla_get_u32(attr2))
5638                                 return 0;
5639         }
5640
5641         return n_channels;
5642 }
5643
5644 static int nl80211_parse_random_mac(struct nlattr **attrs,
5645                                     u8 *mac_addr, u8 *mac_addr_mask)
5646 {
5647         int i;
5648
5649         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5650                 memset(mac_addr, 0, ETH_ALEN);
5651                 memset(mac_addr_mask, 0, ETH_ALEN);
5652                 mac_addr[0] = 0x2;
5653                 mac_addr_mask[0] = 0x3;
5654
5655                 return 0;
5656         }
5657
5658         /* need both or none */
5659         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5660                 return -EINVAL;
5661
5662         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5663         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5664
5665         /* don't allow or configure an mcast address */
5666         if (!is_multicast_ether_addr(mac_addr_mask) ||
5667             is_multicast_ether_addr(mac_addr))
5668                 return -EINVAL;
5669
5670         /*
5671          * allow users to pass a MAC address that has bits set outside
5672          * of the mask, but don't bother drivers with having to deal
5673          * with such bits
5674          */
5675         for (i = 0; i < ETH_ALEN; i++)
5676                 mac_addr[i] &= mac_addr_mask[i];
5677
5678         return 0;
5679 }
5680
5681 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5682 {
5683         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5684         struct wireless_dev *wdev = info->user_ptr[1];
5685         struct cfg80211_scan_request *request;
5686         struct nlattr *attr;
5687         struct wiphy *wiphy;
5688         int err, tmp, n_ssids = 0, n_channels, i;
5689         size_t ie_len;
5690
5691         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5692                 return -EINVAL;
5693
5694         wiphy = &rdev->wiphy;
5695
5696         if (!rdev->ops->scan)
5697                 return -EOPNOTSUPP;
5698
5699         if (rdev->scan_req || rdev->scan_msg) {
5700                 err = -EBUSY;
5701                 goto unlock;
5702         }
5703
5704         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5705                 n_channels = validate_scan_freqs(
5706                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5707                 if (!n_channels) {
5708                         err = -EINVAL;
5709                         goto unlock;
5710                 }
5711         } else {
5712                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5713         }
5714
5715         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5716                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5717                         n_ssids++;
5718
5719         if (n_ssids > wiphy->max_scan_ssids) {
5720                 err = -EINVAL;
5721                 goto unlock;
5722         }
5723
5724         if (info->attrs[NL80211_ATTR_IE])
5725                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5726         else
5727                 ie_len = 0;
5728
5729         if (ie_len > wiphy->max_scan_ie_len) {
5730                 err = -EINVAL;
5731                 goto unlock;
5732         }
5733
5734         request = kzalloc(sizeof(*request)
5735                         + sizeof(*request->ssids) * n_ssids
5736                         + sizeof(*request->channels) * n_channels
5737                         + ie_len, GFP_KERNEL);
5738         if (!request) {
5739                 err = -ENOMEM;
5740                 goto unlock;
5741         }
5742
5743         if (n_ssids)
5744                 request->ssids = (void *)&request->channels[n_channels];
5745         request->n_ssids = n_ssids;
5746         if (ie_len) {
5747                 if (request->ssids)
5748                         request->ie = (void *)(request->ssids + n_ssids);
5749                 else
5750                         request->ie = (void *)(request->channels + n_channels);
5751         }
5752
5753         i = 0;
5754         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5755                 /* user specified, bail out if channel not found */
5756                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5757                         struct ieee80211_channel *chan;
5758
5759                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5760
5761                         if (!chan) {
5762                                 err = -EINVAL;
5763                                 goto out_free;
5764                         }
5765
5766                         /* ignore disabled channels */
5767                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5768                                 continue;
5769
5770                         request->channels[i] = chan;
5771                         i++;
5772                 }
5773         } else {
5774                 enum ieee80211_band band;
5775
5776                 /* all channels */
5777                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5778                         int j;
5779                         if (!wiphy->bands[band])
5780                                 continue;
5781                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5782                                 struct ieee80211_channel *chan;
5783
5784                                 chan = &wiphy->bands[band]->channels[j];
5785
5786                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5787                                         continue;
5788
5789                                 request->channels[i] = chan;
5790                                 i++;
5791                         }
5792                 }
5793         }
5794
5795         if (!i) {
5796                 err = -EINVAL;
5797                 goto out_free;
5798         }
5799
5800         request->n_channels = i;
5801
5802         i = 0;
5803         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5804                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5805                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5806                                 err = -EINVAL;
5807                                 goto out_free;
5808                         }
5809                         request->ssids[i].ssid_len = nla_len(attr);
5810                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5811                         i++;
5812                 }
5813         }
5814
5815         if (info->attrs[NL80211_ATTR_IE]) {
5816                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5817                 memcpy((void *)request->ie,
5818                        nla_data(info->attrs[NL80211_ATTR_IE]),
5819                        request->ie_len);
5820         }
5821
5822         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5823                 if (wiphy->bands[i])
5824                         request->rates[i] =
5825                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5826
5827         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5828                 nla_for_each_nested(attr,
5829                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5830                                     tmp) {
5831                         enum ieee80211_band band = nla_type(attr);
5832
5833                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5834                                 err = -EINVAL;
5835                                 goto out_free;
5836                         }
5837
5838                         if (!wiphy->bands[band])
5839                                 continue;
5840
5841                         err = ieee80211_get_ratemask(wiphy->bands[band],
5842                                                      nla_data(attr),
5843                                                      nla_len(attr),
5844                                                      &request->rates[band]);
5845                         if (err)
5846                                 goto out_free;
5847                 }
5848         }
5849
5850         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5851                 request->flags = nla_get_u32(
5852                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5853                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5854                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5855                         err = -EOPNOTSUPP;
5856                         goto out_free;
5857                 }
5858
5859                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5860                         if (!(wiphy->features &
5861                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5862                                 err = -EOPNOTSUPP;
5863                                 goto out_free;
5864                         }
5865
5866                         if (wdev->current_bss) {
5867                                 err = -EOPNOTSUPP;
5868                                 goto out_free;
5869                         }
5870
5871                         err = nl80211_parse_random_mac(info->attrs,
5872                                                        request->mac_addr,
5873                                                        request->mac_addr_mask);
5874                         if (err)
5875                                 goto out_free;
5876                 }
5877         }
5878
5879         request->no_cck =
5880                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5881
5882         request->wdev = wdev;
5883         request->wiphy = &rdev->wiphy;
5884         request->scan_start = jiffies;
5885
5886         rdev->scan_req = request;
5887         err = rdev_scan(rdev, request);
5888
5889         if (!err) {
5890                 nl80211_send_scan_start(rdev, wdev);
5891                 if (wdev->netdev)
5892                         dev_hold(wdev->netdev);
5893         } else {
5894  out_free:
5895                 rdev->scan_req = NULL;
5896                 kfree(request);
5897         }
5898
5899  unlock:
5900         return err;
5901 }
5902
5903 static struct cfg80211_sched_scan_request *
5904 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5905                          struct nlattr **attrs)
5906 {
5907         struct cfg80211_sched_scan_request *request;
5908         struct nlattr *attr;
5909         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5910         u32 interval;
5911         enum ieee80211_band band;
5912         size_t ie_len;
5913         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5914         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5915
5916         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5917                 return ERR_PTR(-EINVAL);
5918
5919         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5920                 return ERR_PTR(-EINVAL);
5921
5922         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5923         if (interval == 0)
5924                 return ERR_PTR(-EINVAL);
5925
5926         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5927                 n_channels = validate_scan_freqs(
5928                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5929                 if (!n_channels)
5930                         return ERR_PTR(-EINVAL);
5931         } else {
5932                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5933         }
5934
5935         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5936                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5937                                     tmp)
5938                         n_ssids++;
5939
5940         if (n_ssids > wiphy->max_sched_scan_ssids)
5941                 return ERR_PTR(-EINVAL);
5942
5943         /*
5944          * First, count the number of 'real' matchsets. Due to an issue with
5945          * the old implementation, matchsets containing only the RSSI attribute
5946          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5947          * RSSI for all matchsets, rather than their own matchset for reporting
5948          * all APs with a strong RSSI. This is needed to be compatible with
5949          * older userspace that treated a matchset with only the RSSI as the
5950          * global RSSI for all other matchsets - if there are other matchsets.
5951          */
5952         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5953                 nla_for_each_nested(attr,
5954                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5955                                     tmp) {
5956                         struct nlattr *rssi;
5957
5958                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5959                                         nla_data(attr), nla_len(attr),
5960                                         nl80211_match_policy);
5961                         if (err)
5962                                 return ERR_PTR(err);
5963                         /* add other standalone attributes here */
5964                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5965                                 n_match_sets++;
5966                                 continue;
5967                         }
5968                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5969                         if (rssi)
5970                                 default_match_rssi = nla_get_s32(rssi);
5971                 }
5972         }
5973
5974         /* However, if there's no other matchset, add the RSSI one */
5975         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5976                 n_match_sets = 1;
5977
5978         if (n_match_sets > wiphy->max_match_sets)
5979                 return ERR_PTR(-EINVAL);
5980
5981         if (attrs[NL80211_ATTR_IE])
5982                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5983         else
5984                 ie_len = 0;
5985
5986         if (ie_len > wiphy->max_sched_scan_ie_len)
5987                 return ERR_PTR(-EINVAL);
5988
5989         request = kzalloc(sizeof(*request)
5990                         + sizeof(*request->ssids) * n_ssids
5991                         + sizeof(*request->match_sets) * n_match_sets
5992                         + sizeof(*request->channels) * n_channels
5993                         + ie_len, GFP_KERNEL);
5994         if (!request)
5995                 return ERR_PTR(-ENOMEM);
5996
5997         if (n_ssids)
5998                 request->ssids = (void *)&request->channels[n_channels];
5999         request->n_ssids = n_ssids;
6000         if (ie_len) {
6001                 if (request->ssids)
6002                         request->ie = (void *)(request->ssids + n_ssids);
6003                 else
6004                         request->ie = (void *)(request->channels + n_channels);
6005         }
6006
6007         if (n_match_sets) {
6008                 if (request->ie)
6009                         request->match_sets = (void *)(request->ie + ie_len);
6010                 else if (request->ssids)
6011                         request->match_sets =
6012                                 (void *)(request->ssids + n_ssids);
6013                 else
6014                         request->match_sets =
6015                                 (void *)(request->channels + n_channels);
6016         }
6017         request->n_match_sets = n_match_sets;
6018
6019         i = 0;
6020         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6021                 /* user specified, bail out if channel not found */
6022                 nla_for_each_nested(attr,
6023                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6024                                     tmp) {
6025                         struct ieee80211_channel *chan;
6026
6027                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6028
6029                         if (!chan) {
6030                                 err = -EINVAL;
6031                                 goto out_free;
6032                         }
6033
6034                         /* ignore disabled channels */
6035                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6036                                 continue;
6037
6038                         request->channels[i] = chan;
6039                         i++;
6040                 }
6041         } else {
6042                 /* all channels */
6043                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6044                         int j;
6045                         if (!wiphy->bands[band])
6046                                 continue;
6047                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6048                                 struct ieee80211_channel *chan;
6049
6050                                 chan = &wiphy->bands[band]->channels[j];
6051
6052                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6053                                         continue;
6054
6055                                 request->channels[i] = chan;
6056                                 i++;
6057                         }
6058                 }
6059         }
6060
6061         if (!i) {
6062                 err = -EINVAL;
6063                 goto out_free;
6064         }
6065
6066         request->n_channels = i;
6067
6068         i = 0;
6069         if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6070                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6071                                     tmp) {
6072                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6073                                 err = -EINVAL;
6074                                 goto out_free;
6075                         }
6076                         request->ssids[i].ssid_len = nla_len(attr);
6077                         memcpy(request->ssids[i].ssid, nla_data(attr),
6078                                nla_len(attr));
6079                         i++;
6080                 }
6081         }
6082
6083         i = 0;
6084         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6085                 nla_for_each_nested(attr,
6086                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6087                                     tmp) {
6088                         struct nlattr *ssid, *rssi;
6089
6090                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6091                                         nla_data(attr), nla_len(attr),
6092                                         nl80211_match_policy);
6093                         if (err)
6094                                 goto out_free;
6095                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6096                         if (ssid) {
6097                                 if (WARN_ON(i >= n_match_sets)) {
6098                                         /* this indicates a programming error,
6099                                          * the loop above should have verified
6100                                          * things properly
6101                                          */
6102                                         err = -EINVAL;
6103                                         goto out_free;
6104                                 }
6105
6106                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6107                                         err = -EINVAL;
6108                                         goto out_free;
6109                                 }
6110                                 memcpy(request->match_sets[i].ssid.ssid,
6111                                        nla_data(ssid), nla_len(ssid));
6112                                 request->match_sets[i].ssid.ssid_len =
6113                                         nla_len(ssid);
6114                                 /* special attribute - old implemenation w/a */
6115                                 request->match_sets[i].rssi_thold =
6116                                         default_match_rssi;
6117                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6118                                 if (rssi)
6119                                         request->match_sets[i].rssi_thold =
6120                                                 nla_get_s32(rssi);
6121                         }
6122                         i++;
6123                 }
6124
6125                 /* there was no other matchset, so the RSSI one is alone */
6126                 if (i == 0)
6127                         request->match_sets[0].rssi_thold = default_match_rssi;
6128
6129                 request->min_rssi_thold = INT_MAX;
6130                 for (i = 0; i < n_match_sets; i++)
6131                         request->min_rssi_thold =
6132                                 min(request->match_sets[i].rssi_thold,
6133                                     request->min_rssi_thold);
6134         } else {
6135                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6136         }
6137
6138         if (ie_len) {
6139                 request->ie_len = ie_len;
6140                 memcpy((void *)request->ie,
6141                        nla_data(attrs[NL80211_ATTR_IE]),
6142                        request->ie_len);
6143         }
6144
6145         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6146                 request->flags = nla_get_u32(
6147                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6148                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6149                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6150                         err = -EOPNOTSUPP;
6151                         goto out_free;
6152                 }
6153
6154                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6155                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6156
6157                         if (!wdev) /* must be net-detect */
6158                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6159
6160                         if (!(wiphy->features & flg)) {
6161                                 err = -EOPNOTSUPP;
6162                                 goto out_free;
6163                         }
6164
6165                         if (wdev && wdev->current_bss) {
6166                                 err = -EOPNOTSUPP;
6167                                 goto out_free;
6168                         }
6169
6170                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6171                                                        request->mac_addr_mask);
6172                         if (err)
6173                                 goto out_free;
6174                 }
6175         }
6176
6177         request->interval = interval;
6178         request->scan_start = jiffies;
6179
6180         return request;
6181
6182 out_free:
6183         kfree(request);
6184         return ERR_PTR(err);
6185 }
6186
6187 static int nl80211_start_sched_scan(struct sk_buff *skb,
6188                                     struct genl_info *info)
6189 {
6190         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6191         struct net_device *dev = info->user_ptr[1];
6192         struct wireless_dev *wdev = dev->ieee80211_ptr;
6193         struct cfg80211_sched_scan_request *sched_scan_req;
6194         int err;
6195
6196         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6197             !rdev->ops->sched_scan_start)
6198                 return -EOPNOTSUPP;
6199
6200         if (rdev->sched_scan_req)
6201                 return -EINPROGRESS;
6202
6203         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6204                                                   info->attrs);
6205
6206         err = PTR_ERR_OR_ZERO(sched_scan_req);
6207         if (err)
6208                 goto out_err;
6209
6210         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6211         if (err)
6212                 goto out_free;
6213
6214         sched_scan_req->dev = dev;
6215         sched_scan_req->wiphy = &rdev->wiphy;
6216
6217         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6218                 sched_scan_req->owner_nlportid = info->snd_portid;
6219
6220         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6221
6222         nl80211_send_sched_scan(rdev, dev,
6223                                 NL80211_CMD_START_SCHED_SCAN);
6224         return 0;
6225
6226 out_free:
6227         kfree(sched_scan_req);
6228 out_err:
6229         return err;
6230 }
6231
6232 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6233                                    struct genl_info *info)
6234 {
6235         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6236
6237         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6238             !rdev->ops->sched_scan_stop)
6239                 return -EOPNOTSUPP;
6240
6241         return __cfg80211_stop_sched_scan(rdev, false);
6242 }
6243
6244 static int nl80211_start_radar_detection(struct sk_buff *skb,
6245                                          struct genl_info *info)
6246 {
6247         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6248         struct net_device *dev = info->user_ptr[1];
6249         struct wireless_dev *wdev = dev->ieee80211_ptr;
6250         struct cfg80211_chan_def chandef;
6251         enum nl80211_dfs_regions dfs_region;
6252         unsigned int cac_time_ms;
6253         int err;
6254
6255         dfs_region = reg_get_dfs_region(wdev->wiphy);
6256         if (dfs_region == NL80211_DFS_UNSET)
6257                 return -EINVAL;
6258
6259         err = nl80211_parse_chandef(rdev, info, &chandef);
6260         if (err)
6261                 return err;
6262
6263         if (netif_carrier_ok(dev))
6264                 return -EBUSY;
6265
6266         if (wdev->cac_started)
6267                 return -EBUSY;
6268
6269         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6270                                             wdev->iftype);
6271         if (err < 0)
6272                 return err;
6273
6274         if (err == 0)
6275                 return -EINVAL;
6276
6277         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6278                 return -EINVAL;
6279
6280         if (!rdev->ops->start_radar_detection)
6281                 return -EOPNOTSUPP;
6282
6283         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6284         if (WARN_ON(!cac_time_ms))
6285                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6286
6287         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6288                                                cac_time_ms);
6289         if (!err) {
6290                 wdev->chandef = chandef;
6291                 wdev->cac_started = true;
6292                 wdev->cac_start_time = jiffies;
6293                 wdev->cac_time_ms = cac_time_ms;
6294         }
6295         return err;
6296 }
6297
6298 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6299 {
6300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6301         struct net_device *dev = info->user_ptr[1];
6302         struct wireless_dev *wdev = dev->ieee80211_ptr;
6303         struct cfg80211_csa_settings params;
6304         /* csa_attrs is defined static to avoid waste of stack size - this
6305          * function is called under RTNL lock, so this should not be a problem.
6306          */
6307         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6308         int err;
6309         bool need_new_beacon = false;
6310         int len, i;
6311         u32 cs_count;
6312
6313         if (!rdev->ops->channel_switch ||
6314             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6315                 return -EOPNOTSUPP;
6316
6317         switch (dev->ieee80211_ptr->iftype) {
6318         case NL80211_IFTYPE_AP:
6319         case NL80211_IFTYPE_P2P_GO:
6320                 need_new_beacon = true;
6321
6322                 /* useless if AP is not running */
6323                 if (!wdev->beacon_interval)
6324                         return -ENOTCONN;
6325                 break;
6326         case NL80211_IFTYPE_ADHOC:
6327                 if (!wdev->ssid_len)
6328                         return -ENOTCONN;
6329                 break;
6330         case NL80211_IFTYPE_MESH_POINT:
6331                 if (!wdev->mesh_id_len)
6332                         return -ENOTCONN;
6333                 break;
6334         default:
6335                 return -EOPNOTSUPP;
6336         }
6337
6338         memset(&params, 0, sizeof(params));
6339
6340         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6341             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6342                 return -EINVAL;
6343
6344         /* only important for AP, IBSS and mesh create IEs internally */
6345         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6346                 return -EINVAL;
6347
6348         /* Even though the attribute is u32, the specification says
6349          * u8, so let's make sure we don't overflow.
6350          */
6351         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6352         if (cs_count > 255)
6353                 return -EINVAL;
6354
6355         params.count = cs_count;
6356
6357         if (!need_new_beacon)
6358                 goto skip_beacons;
6359
6360         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6361         if (err)
6362                 return err;
6363
6364         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6365                                info->attrs[NL80211_ATTR_CSA_IES],
6366                                nl80211_policy);
6367         if (err)
6368                 return err;
6369
6370         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6371         if (err)
6372                 return err;
6373
6374         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6375                 return -EINVAL;
6376
6377         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6378         if (!len || (len % sizeof(u16)))
6379                 return -EINVAL;
6380
6381         params.n_counter_offsets_beacon = len / sizeof(u16);
6382         if (rdev->wiphy.max_num_csa_counters &&
6383             (params.n_counter_offsets_beacon >
6384              rdev->wiphy.max_num_csa_counters))
6385                 return -EINVAL;
6386
6387         params.counter_offsets_beacon =
6388                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6389
6390         /* sanity checks - counters should fit and be the same */
6391         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6392                 u16 offset = params.counter_offsets_beacon[i];
6393
6394                 if (offset >= params.beacon_csa.tail_len)
6395                         return -EINVAL;
6396
6397                 if (params.beacon_csa.tail[offset] != params.count)
6398                         return -EINVAL;
6399         }
6400
6401         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6402                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6403                 if (!len || (len % sizeof(u16)))
6404                         return -EINVAL;
6405
6406                 params.n_counter_offsets_presp = len / sizeof(u16);
6407                 if (rdev->wiphy.max_num_csa_counters &&
6408                     (params.n_counter_offsets_beacon >
6409                      rdev->wiphy.max_num_csa_counters))
6410                         return -EINVAL;
6411
6412                 params.counter_offsets_presp =
6413                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6414
6415                 /* sanity checks - counters should fit and be the same */
6416                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6417                         u16 offset = params.counter_offsets_presp[i];
6418
6419                         if (offset >= params.beacon_csa.probe_resp_len)
6420                                 return -EINVAL;
6421
6422                         if (params.beacon_csa.probe_resp[offset] !=
6423                             params.count)
6424                                 return -EINVAL;
6425                 }
6426         }
6427
6428 skip_beacons:
6429         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6430         if (err)
6431                 return err;
6432
6433         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6434                                      wdev->iftype))
6435                 return -EINVAL;
6436
6437         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6438                                             &params.chandef,
6439                                             wdev->iftype);
6440         if (err < 0)
6441                 return err;
6442
6443         if (err > 0)
6444                 params.radar_required = true;
6445
6446         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6447                 params.block_tx = true;
6448
6449         wdev_lock(wdev);
6450         err = rdev_channel_switch(rdev, dev, &params);
6451         wdev_unlock(wdev);
6452
6453         return err;
6454 }
6455
6456 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6457                             u32 seq, int flags,
6458                             struct cfg80211_registered_device *rdev,
6459                             struct wireless_dev *wdev,
6460                             struct cfg80211_internal_bss *intbss)
6461 {
6462         struct cfg80211_bss *res = &intbss->pub;
6463         const struct cfg80211_bss_ies *ies;
6464         void *hdr;
6465         struct nlattr *bss;
6466
6467         ASSERT_WDEV_LOCK(wdev);
6468
6469         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6470                              NL80211_CMD_NEW_SCAN_RESULTS);
6471         if (!hdr)
6472                 return -1;
6473
6474         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6475
6476         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6477                 goto nla_put_failure;
6478         if (wdev->netdev &&
6479             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6480                 goto nla_put_failure;
6481         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6482                 goto nla_put_failure;
6483
6484         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6485         if (!bss)
6486                 goto nla_put_failure;
6487         if ((!is_zero_ether_addr(res->bssid) &&
6488              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6489                 goto nla_put_failure;
6490
6491         rcu_read_lock();
6492         /* indicate whether we have probe response data or not */
6493         if (rcu_access_pointer(res->proberesp_ies) &&
6494             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6495                 goto fail_unlock_rcu;
6496
6497         /* this pointer prefers to be pointed to probe response data
6498          * but is always valid
6499          */
6500         ies = rcu_dereference(res->ies);
6501         if (ies) {
6502                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6503                         goto fail_unlock_rcu;
6504                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6505                                         ies->len, ies->data))
6506                         goto fail_unlock_rcu;
6507         }
6508
6509         /* and this pointer is always (unless driver didn't know) beacon data */
6510         ies = rcu_dereference(res->beacon_ies);
6511         if (ies && ies->from_beacon) {
6512                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6513                         goto fail_unlock_rcu;
6514                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6515                                         ies->len, ies->data))
6516                         goto fail_unlock_rcu;
6517         }
6518         rcu_read_unlock();
6519
6520         if (res->beacon_interval &&
6521             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6522                 goto nla_put_failure;
6523         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6524             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6525             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6526             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6527                         jiffies_to_msecs(jiffies - intbss->ts)))
6528                 goto nla_put_failure;
6529
6530         switch (rdev->wiphy.signal_type) {
6531         case CFG80211_SIGNAL_TYPE_MBM:
6532                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6533                         goto nla_put_failure;
6534                 break;
6535         case CFG80211_SIGNAL_TYPE_UNSPEC:
6536                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6537                         goto nla_put_failure;
6538                 break;
6539         default:
6540                 break;
6541         }
6542
6543         switch (wdev->iftype) {
6544         case NL80211_IFTYPE_P2P_CLIENT:
6545         case NL80211_IFTYPE_STATION:
6546                 if (intbss == wdev->current_bss &&
6547                     nla_put_u32(msg, NL80211_BSS_STATUS,
6548                                 NL80211_BSS_STATUS_ASSOCIATED))
6549                         goto nla_put_failure;
6550                 break;
6551         case NL80211_IFTYPE_ADHOC:
6552                 if (intbss == wdev->current_bss &&
6553                     nla_put_u32(msg, NL80211_BSS_STATUS,
6554                                 NL80211_BSS_STATUS_IBSS_JOINED))
6555                         goto nla_put_failure;
6556                 break;
6557         default:
6558                 break;
6559         }
6560
6561         nla_nest_end(msg, bss);
6562
6563         return genlmsg_end(msg, hdr);
6564
6565  fail_unlock_rcu:
6566         rcu_read_unlock();
6567  nla_put_failure:
6568         genlmsg_cancel(msg, hdr);
6569         return -EMSGSIZE;
6570 }
6571
6572 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6573 {
6574         struct cfg80211_registered_device *rdev;
6575         struct cfg80211_internal_bss *scan;
6576         struct wireless_dev *wdev;
6577         int start = cb->args[2], idx = 0;
6578         int err;
6579
6580         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6581         if (err)
6582                 return err;
6583
6584         wdev_lock(wdev);
6585         spin_lock_bh(&rdev->bss_lock);
6586         cfg80211_bss_expire(rdev);
6587
6588         cb->seq = rdev->bss_generation;
6589
6590         list_for_each_entry(scan, &rdev->bss_list, list) {
6591                 if (++idx <= start)
6592                         continue;
6593                 if (nl80211_send_bss(skb, cb,
6594                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6595                                 rdev, wdev, scan) < 0) {
6596                         idx--;
6597                         break;
6598                 }
6599         }
6600
6601         spin_unlock_bh(&rdev->bss_lock);
6602         wdev_unlock(wdev);
6603
6604         cb->args[2] = idx;
6605         nl80211_finish_wdev_dump(rdev);
6606
6607         return skb->len;
6608 }
6609
6610 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6611                                 int flags, struct net_device *dev,
6612                                 struct survey_info *survey)
6613 {
6614         void *hdr;
6615         struct nlattr *infoattr;
6616
6617         hdr = nl80211hdr_put(msg, portid, seq, flags,
6618                              NL80211_CMD_NEW_SURVEY_RESULTS);
6619         if (!hdr)
6620                 return -ENOMEM;
6621
6622         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6623                 goto nla_put_failure;
6624
6625         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6626         if (!infoattr)
6627                 goto nla_put_failure;
6628
6629         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6630                         survey->channel->center_freq))
6631                 goto nla_put_failure;
6632
6633         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6634             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6635                 goto nla_put_failure;
6636         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6637             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6638                 goto nla_put_failure;
6639         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6640             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6641                         survey->channel_time))
6642                 goto nla_put_failure;
6643         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6644             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6645                         survey->channel_time_busy))
6646                 goto nla_put_failure;
6647         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6648             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6649                         survey->channel_time_ext_busy))
6650                 goto nla_put_failure;
6651         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6652             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6653                         survey->channel_time_rx))
6654                 goto nla_put_failure;
6655         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6656             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6657                         survey->channel_time_tx))
6658                 goto nla_put_failure;
6659
6660         nla_nest_end(msg, infoattr);
6661
6662         return genlmsg_end(msg, hdr);
6663
6664  nla_put_failure:
6665         genlmsg_cancel(msg, hdr);
6666         return -EMSGSIZE;
6667 }
6668
6669 static int nl80211_dump_survey(struct sk_buff *skb,
6670                         struct netlink_callback *cb)
6671 {
6672         struct survey_info survey;
6673         struct cfg80211_registered_device *rdev;
6674         struct wireless_dev *wdev;
6675         int survey_idx = cb->args[2];
6676         int res;
6677
6678         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6679         if (res)
6680                 return res;
6681
6682         if (!wdev->netdev) {
6683                 res = -EINVAL;
6684                 goto out_err;
6685         }
6686
6687         if (!rdev->ops->dump_survey) {
6688                 res = -EOPNOTSUPP;
6689                 goto out_err;
6690         }
6691
6692         while (1) {
6693                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6694                 if (res == -ENOENT)
6695                         break;
6696                 if (res)
6697                         goto out_err;
6698
6699                 /* Survey without a channel doesn't make sense */
6700                 if (!survey.channel) {
6701                         res = -EINVAL;
6702                         goto out;
6703                 }
6704
6705                 if (survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6706                         survey_idx++;
6707                         continue;
6708                 }
6709
6710                 if (nl80211_send_survey(skb,
6711                                 NETLINK_CB(cb->skb).portid,
6712                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6713                                 wdev->netdev, &survey) < 0)
6714                         goto out;
6715                 survey_idx++;
6716         }
6717
6718  out:
6719         cb->args[2] = survey_idx;
6720         res = skb->len;
6721  out_err:
6722         nl80211_finish_wdev_dump(rdev);
6723         return res;
6724 }
6725
6726 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6727 {
6728         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6729                                   NL80211_WPA_VERSION_2));
6730 }
6731
6732 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6733 {
6734         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6735         struct net_device *dev = info->user_ptr[1];
6736         struct ieee80211_channel *chan;
6737         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6738         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6739         enum nl80211_auth_type auth_type;
6740         struct key_parse key;
6741         bool local_state_change;
6742
6743         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6744                 return -EINVAL;
6745
6746         if (!info->attrs[NL80211_ATTR_MAC])
6747                 return -EINVAL;
6748
6749         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6750                 return -EINVAL;
6751
6752         if (!info->attrs[NL80211_ATTR_SSID])
6753                 return -EINVAL;
6754
6755         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6756                 return -EINVAL;
6757
6758         err = nl80211_parse_key(info, &key);
6759         if (err)
6760                 return err;
6761
6762         if (key.idx >= 0) {
6763                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6764                         return -EINVAL;
6765                 if (!key.p.key || !key.p.key_len)
6766                         return -EINVAL;
6767                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6768                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6769                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6770                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6771                         return -EINVAL;
6772                 if (key.idx > 4)
6773                         return -EINVAL;
6774         } else {
6775                 key.p.key_len = 0;
6776                 key.p.key = NULL;
6777         }
6778
6779         if (key.idx >= 0) {
6780                 int i;
6781                 bool ok = false;
6782                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6783                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6784                                 ok = true;
6785                                 break;
6786                         }
6787                 }
6788                 if (!ok)
6789                         return -EINVAL;
6790         }
6791
6792         if (!rdev->ops->auth)
6793                 return -EOPNOTSUPP;
6794
6795         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6796             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6797                 return -EOPNOTSUPP;
6798
6799         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6800         chan = nl80211_get_valid_chan(&rdev->wiphy,
6801                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6802         if (!chan)
6803                 return -EINVAL;
6804
6805         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6806         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6807
6808         if (info->attrs[NL80211_ATTR_IE]) {
6809                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6810                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6811         }
6812
6813         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6814         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6815                 return -EINVAL;
6816
6817         if (auth_type == NL80211_AUTHTYPE_SAE &&
6818             !info->attrs[NL80211_ATTR_SAE_DATA])
6819                 return -EINVAL;
6820
6821         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6822                 if (auth_type != NL80211_AUTHTYPE_SAE)
6823                         return -EINVAL;
6824                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6825                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6826                 /* need to include at least Auth Transaction and Status Code */
6827                 if (sae_data_len < 4)
6828                         return -EINVAL;
6829         }
6830
6831         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6832
6833         /*
6834          * Since we no longer track auth state, ignore
6835          * requests to only change local state.
6836          */
6837         if (local_state_change)
6838                 return 0;
6839
6840         wdev_lock(dev->ieee80211_ptr);
6841         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6842                                  ssid, ssid_len, ie, ie_len,
6843                                  key.p.key, key.p.key_len, key.idx,
6844                                  sae_data, sae_data_len);
6845         wdev_unlock(dev->ieee80211_ptr);
6846         return err;
6847 }
6848
6849 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6850                                    struct genl_info *info,
6851                                    struct cfg80211_crypto_settings *settings,
6852                                    int cipher_limit)
6853 {
6854         memset(settings, 0, sizeof(*settings));
6855
6856         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6857
6858         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6859                 u16 proto;
6860                 proto = nla_get_u16(
6861                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6862                 settings->control_port_ethertype = cpu_to_be16(proto);
6863                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6864                     proto != ETH_P_PAE)
6865                         return -EINVAL;
6866                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6867                         settings->control_port_no_encrypt = true;
6868         } else
6869                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6870
6871         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6872                 void *data;
6873                 int len, i;
6874
6875                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6876                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6877                 settings->n_ciphers_pairwise = len / sizeof(u32);
6878
6879                 if (len % sizeof(u32))
6880                         return -EINVAL;
6881
6882                 if (settings->n_ciphers_pairwise > cipher_limit)
6883                         return -EINVAL;
6884
6885                 memcpy(settings->ciphers_pairwise, data, len);
6886
6887                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6888                         if (!cfg80211_supported_cipher_suite(
6889                                         &rdev->wiphy,
6890                                         settings->ciphers_pairwise[i]))
6891                                 return -EINVAL;
6892         }
6893
6894         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6895                 settings->cipher_group =
6896                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6897                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6898                                                      settings->cipher_group))
6899                         return -EINVAL;
6900         }
6901
6902         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6903                 settings->wpa_versions =
6904                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6905                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6906                         return -EINVAL;
6907         }
6908
6909         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6910                 void *data;
6911                 int len;
6912
6913                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6914                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6915                 settings->n_akm_suites = len / sizeof(u32);
6916
6917                 if (len % sizeof(u32))
6918                         return -EINVAL;
6919
6920                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6921                         return -EINVAL;
6922
6923                 memcpy(settings->akm_suites, data, len);
6924         }
6925
6926         return 0;
6927 }
6928
6929 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6930 {
6931         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6932         struct net_device *dev = info->user_ptr[1];
6933         struct ieee80211_channel *chan;
6934         struct cfg80211_assoc_request req = {};
6935         const u8 *bssid, *ssid;
6936         int err, ssid_len = 0;
6937
6938         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6939                 return -EINVAL;
6940
6941         if (!info->attrs[NL80211_ATTR_MAC] ||
6942             !info->attrs[NL80211_ATTR_SSID] ||
6943             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6944                 return -EINVAL;
6945
6946         if (!rdev->ops->assoc)
6947                 return -EOPNOTSUPP;
6948
6949         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6950             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6951                 return -EOPNOTSUPP;
6952
6953         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6954
6955         chan = nl80211_get_valid_chan(&rdev->wiphy,
6956                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6957         if (!chan)
6958                 return -EINVAL;
6959
6960         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6961         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6962
6963         if (info->attrs[NL80211_ATTR_IE]) {
6964                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6965                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6966         }
6967
6968         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6969                 enum nl80211_mfp mfp =
6970                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6971                 if (mfp == NL80211_MFP_REQUIRED)
6972                         req.use_mfp = true;
6973                 else if (mfp != NL80211_MFP_NO)
6974                         return -EINVAL;
6975         }
6976
6977         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6978                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6979
6980         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6981                 req.flags |= ASSOC_REQ_DISABLE_HT;
6982
6983         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6984                 memcpy(&req.ht_capa_mask,
6985                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6986                        sizeof(req.ht_capa_mask));
6987
6988         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6989                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6990                         return -EINVAL;
6991                 memcpy(&req.ht_capa,
6992                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6993                        sizeof(req.ht_capa));
6994         }
6995
6996         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6997                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6998
6999         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7000                 memcpy(&req.vht_capa_mask,
7001                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7002                        sizeof(req.vht_capa_mask));
7003
7004         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7005                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7006                         return -EINVAL;
7007                 memcpy(&req.vht_capa,
7008                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7009                        sizeof(req.vht_capa));
7010         }
7011
7012         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7013                 if (!(rdev->wiphy.features &
7014                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7015                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7016                         return -EINVAL;
7017                 req.flags |= ASSOC_REQ_USE_RRM;
7018         }
7019
7020         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7021         if (!err) {
7022                 wdev_lock(dev->ieee80211_ptr);
7023                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7024                                           ssid, ssid_len, &req);
7025                 wdev_unlock(dev->ieee80211_ptr);
7026         }
7027
7028         return err;
7029 }
7030
7031 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7032 {
7033         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7034         struct net_device *dev = info->user_ptr[1];
7035         const u8 *ie = NULL, *bssid;
7036         int ie_len = 0, err;
7037         u16 reason_code;
7038         bool local_state_change;
7039
7040         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7041                 return -EINVAL;
7042
7043         if (!info->attrs[NL80211_ATTR_MAC])
7044                 return -EINVAL;
7045
7046         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7047                 return -EINVAL;
7048
7049         if (!rdev->ops->deauth)
7050                 return -EOPNOTSUPP;
7051
7052         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7053             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7054                 return -EOPNOTSUPP;
7055
7056         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7057
7058         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7059         if (reason_code == 0) {
7060                 /* Reason Code 0 is reserved */
7061                 return -EINVAL;
7062         }
7063
7064         if (info->attrs[NL80211_ATTR_IE]) {
7065                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7066                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7067         }
7068
7069         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7070
7071         wdev_lock(dev->ieee80211_ptr);
7072         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7073                                    local_state_change);
7074         wdev_unlock(dev->ieee80211_ptr);
7075         return err;
7076 }
7077
7078 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7079 {
7080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7081         struct net_device *dev = info->user_ptr[1];
7082         const u8 *ie = NULL, *bssid;
7083         int ie_len = 0, err;
7084         u16 reason_code;
7085         bool local_state_change;
7086
7087         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7088                 return -EINVAL;
7089
7090         if (!info->attrs[NL80211_ATTR_MAC])
7091                 return -EINVAL;
7092
7093         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7094                 return -EINVAL;
7095
7096         if (!rdev->ops->disassoc)
7097                 return -EOPNOTSUPP;
7098
7099         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7100             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7101                 return -EOPNOTSUPP;
7102
7103         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7104
7105         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7106         if (reason_code == 0) {
7107                 /* Reason Code 0 is reserved */
7108                 return -EINVAL;
7109         }
7110
7111         if (info->attrs[NL80211_ATTR_IE]) {
7112                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7113                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7114         }
7115
7116         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7117
7118         wdev_lock(dev->ieee80211_ptr);
7119         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7120                                      local_state_change);
7121         wdev_unlock(dev->ieee80211_ptr);
7122         return err;
7123 }
7124
7125 static bool
7126 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7127                          int mcast_rate[IEEE80211_NUM_BANDS],
7128                          int rateval)
7129 {
7130         struct wiphy *wiphy = &rdev->wiphy;
7131         bool found = false;
7132         int band, i;
7133
7134         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7135                 struct ieee80211_supported_band *sband;
7136
7137                 sband = wiphy->bands[band];
7138                 if (!sband)
7139                         continue;
7140
7141                 for (i = 0; i < sband->n_bitrates; i++) {
7142                         if (sband->bitrates[i].bitrate == rateval) {
7143                                 mcast_rate[band] = i + 1;
7144                                 found = true;
7145                                 break;
7146                         }
7147                 }
7148         }
7149
7150         return found;
7151 }
7152
7153 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7154 {
7155         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7156         struct net_device *dev = info->user_ptr[1];
7157         struct cfg80211_ibss_params ibss;
7158         struct wiphy *wiphy;
7159         struct cfg80211_cached_keys *connkeys = NULL;
7160         int err;
7161
7162         memset(&ibss, 0, sizeof(ibss));
7163
7164         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7165                 return -EINVAL;
7166
7167         if (!info->attrs[NL80211_ATTR_SSID] ||
7168             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7169                 return -EINVAL;
7170
7171         ibss.beacon_interval = 100;
7172
7173         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7174                 ibss.beacon_interval =
7175                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7176                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7177                         return -EINVAL;
7178         }
7179
7180         if (!rdev->ops->join_ibss)
7181                 return -EOPNOTSUPP;
7182
7183         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7184                 return -EOPNOTSUPP;
7185
7186         wiphy = &rdev->wiphy;
7187
7188         if (info->attrs[NL80211_ATTR_MAC]) {
7189                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7190
7191                 if (!is_valid_ether_addr(ibss.bssid))
7192                         return -EINVAL;
7193         }
7194         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7195         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7196
7197         if (info->attrs[NL80211_ATTR_IE]) {
7198                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7199                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7200         }
7201
7202         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7203         if (err)
7204                 return err;
7205
7206         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7207                                      NL80211_IFTYPE_ADHOC))
7208                 return -EINVAL;
7209
7210         switch (ibss.chandef.width) {
7211         case NL80211_CHAN_WIDTH_5:
7212         case NL80211_CHAN_WIDTH_10:
7213         case NL80211_CHAN_WIDTH_20_NOHT:
7214                 break;
7215         case NL80211_CHAN_WIDTH_20:
7216         case NL80211_CHAN_WIDTH_40:
7217                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7218                         break;
7219         default:
7220                 return -EINVAL;
7221         }
7222
7223         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7224         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7225
7226         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7227                 u8 *rates =
7228                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7229                 int n_rates =
7230                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7231                 struct ieee80211_supported_band *sband =
7232                         wiphy->bands[ibss.chandef.chan->band];
7233
7234                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7235                                              &ibss.basic_rates);
7236                 if (err)
7237                         return err;
7238         }
7239
7240         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7241                 memcpy(&ibss.ht_capa_mask,
7242                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7243                        sizeof(ibss.ht_capa_mask));
7244
7245         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7246                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7247                         return -EINVAL;
7248                 memcpy(&ibss.ht_capa,
7249                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7250                        sizeof(ibss.ht_capa));
7251         }
7252
7253         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7254             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7255                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7256                 return -EINVAL;
7257
7258         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7259                 bool no_ht = false;
7260
7261                 connkeys = nl80211_parse_connkeys(rdev,
7262                                           info->attrs[NL80211_ATTR_KEYS],
7263                                           &no_ht);
7264                 if (IS_ERR(connkeys))
7265                         return PTR_ERR(connkeys);
7266
7267                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7268                     no_ht) {
7269                         kfree(connkeys);
7270                         return -EINVAL;
7271                 }
7272         }
7273
7274         ibss.control_port =
7275                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7276
7277         ibss.userspace_handles_dfs =
7278                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7279
7280         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7281         if (err)
7282                 kzfree(connkeys);
7283         return err;
7284 }
7285
7286 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7287 {
7288         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7289         struct net_device *dev = info->user_ptr[1];
7290
7291         if (!rdev->ops->leave_ibss)
7292                 return -EOPNOTSUPP;
7293
7294         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7295                 return -EOPNOTSUPP;
7296
7297         return cfg80211_leave_ibss(rdev, dev, false);
7298 }
7299
7300 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7301 {
7302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7303         struct net_device *dev = info->user_ptr[1];
7304         int mcast_rate[IEEE80211_NUM_BANDS];
7305         u32 nla_rate;
7306         int err;
7307
7308         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7309             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7310                 return -EOPNOTSUPP;
7311
7312         if (!rdev->ops->set_mcast_rate)
7313                 return -EOPNOTSUPP;
7314
7315         memset(mcast_rate, 0, sizeof(mcast_rate));
7316
7317         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7318                 return -EINVAL;
7319
7320         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7321         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7322                 return -EINVAL;
7323
7324         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7325
7326         return err;
7327 }
7328
7329 static struct sk_buff *
7330 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7331                             int approxlen, u32 portid, u32 seq,
7332                             enum nl80211_commands cmd,
7333                             enum nl80211_attrs attr,
7334                             const struct nl80211_vendor_cmd_info *info,
7335                             gfp_t gfp)
7336 {
7337         struct sk_buff *skb;
7338         void *hdr;
7339         struct nlattr *data;
7340
7341         skb = nlmsg_new(approxlen + 100, gfp);
7342         if (!skb)
7343                 return NULL;
7344
7345         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7346         if (!hdr) {
7347                 kfree_skb(skb);
7348                 return NULL;
7349         }
7350
7351         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7352                 goto nla_put_failure;
7353
7354         if (info) {
7355                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7356                                 info->vendor_id))
7357                         goto nla_put_failure;
7358                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7359                                 info->subcmd))
7360                         goto nla_put_failure;
7361         }
7362
7363         data = nla_nest_start(skb, attr);
7364
7365         ((void **)skb->cb)[0] = rdev;
7366         ((void **)skb->cb)[1] = hdr;
7367         ((void **)skb->cb)[2] = data;
7368
7369         return skb;
7370
7371  nla_put_failure:
7372         kfree_skb(skb);
7373         return NULL;
7374 }
7375
7376 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7377                                            enum nl80211_commands cmd,
7378                                            enum nl80211_attrs attr,
7379                                            int vendor_event_idx,
7380                                            int approxlen, gfp_t gfp)
7381 {
7382         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7383         const struct nl80211_vendor_cmd_info *info;
7384
7385         switch (cmd) {
7386         case NL80211_CMD_TESTMODE:
7387                 if (WARN_ON(vendor_event_idx != -1))
7388                         return NULL;
7389                 info = NULL;
7390                 break;
7391         case NL80211_CMD_VENDOR:
7392                 if (WARN_ON(vendor_event_idx < 0 ||
7393                             vendor_event_idx >= wiphy->n_vendor_events))
7394                         return NULL;
7395                 info = &wiphy->vendor_events[vendor_event_idx];
7396                 break;
7397         default:
7398                 WARN_ON(1);
7399                 return NULL;
7400         }
7401
7402         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7403                                            cmd, attr, info, gfp);
7404 }
7405 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7406
7407 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7408 {
7409         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7410         void *hdr = ((void **)skb->cb)[1];
7411         struct nlattr *data = ((void **)skb->cb)[2];
7412         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7413
7414         /* clear CB data for netlink core to own from now on */
7415         memset(skb->cb, 0, sizeof(skb->cb));
7416
7417         nla_nest_end(skb, data);
7418         genlmsg_end(skb, hdr);
7419
7420         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7421                 mcgrp = NL80211_MCGRP_VENDOR;
7422
7423         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7424                                 mcgrp, gfp);
7425 }
7426 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7427
7428 #ifdef CONFIG_NL80211_TESTMODE
7429 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7430 {
7431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7432         struct wireless_dev *wdev =
7433                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7434         int err;
7435
7436         if (!rdev->ops->testmode_cmd)
7437                 return -EOPNOTSUPP;
7438
7439         if (IS_ERR(wdev)) {
7440                 err = PTR_ERR(wdev);
7441                 if (err != -EINVAL)
7442                         return err;
7443                 wdev = NULL;
7444         } else if (wdev->wiphy != &rdev->wiphy) {
7445                 return -EINVAL;
7446         }
7447
7448         if (!info->attrs[NL80211_ATTR_TESTDATA])
7449                 return -EINVAL;
7450
7451         rdev->cur_cmd_info = info;
7452         err = rdev_testmode_cmd(rdev, wdev,
7453                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7454                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7455         rdev->cur_cmd_info = NULL;
7456
7457         return err;
7458 }
7459
7460 static int nl80211_testmode_dump(struct sk_buff *skb,
7461                                  struct netlink_callback *cb)
7462 {
7463         struct cfg80211_registered_device *rdev;
7464         int err;
7465         long phy_idx;
7466         void *data = NULL;
7467         int data_len = 0;
7468
7469         rtnl_lock();
7470
7471         if (cb->args[0]) {
7472                 /*
7473                  * 0 is a valid index, but not valid for args[0],
7474                  * so we need to offset by 1.
7475                  */
7476                 phy_idx = cb->args[0] - 1;
7477         } else {
7478                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7479                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7480                                   nl80211_policy);
7481                 if (err)
7482                         goto out_err;
7483
7484                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7485                                                   nl80211_fam.attrbuf);
7486                 if (IS_ERR(rdev)) {
7487                         err = PTR_ERR(rdev);
7488                         goto out_err;
7489                 }
7490                 phy_idx = rdev->wiphy_idx;
7491                 rdev = NULL;
7492
7493                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7494                         cb->args[1] =
7495                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7496         }
7497
7498         if (cb->args[1]) {
7499                 data = nla_data((void *)cb->args[1]);
7500                 data_len = nla_len((void *)cb->args[1]);
7501         }
7502
7503         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7504         if (!rdev) {
7505                 err = -ENOENT;
7506                 goto out_err;
7507         }
7508
7509         if (!rdev->ops->testmode_dump) {
7510                 err = -EOPNOTSUPP;
7511                 goto out_err;
7512         }
7513
7514         while (1) {
7515                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7516                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7517                                            NL80211_CMD_TESTMODE);
7518                 struct nlattr *tmdata;
7519
7520                 if (!hdr)
7521                         break;
7522
7523                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7524                         genlmsg_cancel(skb, hdr);
7525                         break;
7526                 }
7527
7528                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7529                 if (!tmdata) {
7530                         genlmsg_cancel(skb, hdr);
7531                         break;
7532                 }
7533                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7534                 nla_nest_end(skb, tmdata);
7535
7536                 if (err == -ENOBUFS || err == -ENOENT) {
7537                         genlmsg_cancel(skb, hdr);
7538                         break;
7539                 } else if (err) {
7540                         genlmsg_cancel(skb, hdr);
7541                         goto out_err;
7542                 }
7543
7544                 genlmsg_end(skb, hdr);
7545         }
7546
7547         err = skb->len;
7548         /* see above */
7549         cb->args[0] = phy_idx + 1;
7550  out_err:
7551         rtnl_unlock();
7552         return err;
7553 }
7554 #endif
7555
7556 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7557 {
7558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7559         struct net_device *dev = info->user_ptr[1];
7560         struct cfg80211_connect_params connect;
7561         struct wiphy *wiphy;
7562         struct cfg80211_cached_keys *connkeys = NULL;
7563         int err;
7564
7565         memset(&connect, 0, sizeof(connect));
7566
7567         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7568                 return -EINVAL;
7569
7570         if (!info->attrs[NL80211_ATTR_SSID] ||
7571             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7572                 return -EINVAL;
7573
7574         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7575                 connect.auth_type =
7576                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7577                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7578                                              NL80211_CMD_CONNECT))
7579                         return -EINVAL;
7580         } else
7581                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7582
7583         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7584
7585         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7586                                       NL80211_MAX_NR_CIPHER_SUITES);
7587         if (err)
7588                 return err;
7589
7590         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7591             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7592                 return -EOPNOTSUPP;
7593
7594         wiphy = &rdev->wiphy;
7595
7596         connect.bg_scan_period = -1;
7597         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7598                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7599                 connect.bg_scan_period =
7600                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7601         }
7602
7603         if (info->attrs[NL80211_ATTR_MAC])
7604                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7605         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7606                 connect.bssid_hint =
7607                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7608         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7609         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7610
7611         if (info->attrs[NL80211_ATTR_IE]) {
7612                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7613                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7614         }
7615
7616         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7617                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7618                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7619                     connect.mfp != NL80211_MFP_NO)
7620                         return -EINVAL;
7621         } else {
7622                 connect.mfp = NL80211_MFP_NO;
7623         }
7624
7625         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7626                 connect.channel = nl80211_get_valid_chan(
7627                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7628                 if (!connect.channel)
7629                         return -EINVAL;
7630         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7631                 connect.channel_hint = nl80211_get_valid_chan(
7632                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7633                 if (!connect.channel_hint)
7634                         return -EINVAL;
7635         }
7636
7637         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7638                 connkeys = nl80211_parse_connkeys(rdev,
7639                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7640                 if (IS_ERR(connkeys))
7641                         return PTR_ERR(connkeys);
7642         }
7643
7644         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7645                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7646
7647         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7648                 memcpy(&connect.ht_capa_mask,
7649                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7650                        sizeof(connect.ht_capa_mask));
7651
7652         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7653                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7654                         kzfree(connkeys);
7655                         return -EINVAL;
7656                 }
7657                 memcpy(&connect.ht_capa,
7658                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7659                        sizeof(connect.ht_capa));
7660         }
7661
7662         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7663                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7664
7665         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7666                 memcpy(&connect.vht_capa_mask,
7667                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7668                        sizeof(connect.vht_capa_mask));
7669
7670         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7671                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7672                         kzfree(connkeys);
7673                         return -EINVAL;
7674                 }
7675                 memcpy(&connect.vht_capa,
7676                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7677                        sizeof(connect.vht_capa));
7678         }
7679
7680         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7681                 if (!(rdev->wiphy.features &
7682                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7683                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7684                         return -EINVAL;
7685                 connect.flags |= ASSOC_REQ_USE_RRM;
7686         }
7687
7688         wdev_lock(dev->ieee80211_ptr);
7689         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7690         wdev_unlock(dev->ieee80211_ptr);
7691         if (err)
7692                 kzfree(connkeys);
7693         return err;
7694 }
7695
7696 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7697 {
7698         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7699         struct net_device *dev = info->user_ptr[1];
7700         u16 reason;
7701         int ret;
7702
7703         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7704                 reason = WLAN_REASON_DEAUTH_LEAVING;
7705         else
7706                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7707
7708         if (reason == 0)
7709                 return -EINVAL;
7710
7711         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7712             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7713                 return -EOPNOTSUPP;
7714
7715         wdev_lock(dev->ieee80211_ptr);
7716         ret = cfg80211_disconnect(rdev, dev, reason, true);
7717         wdev_unlock(dev->ieee80211_ptr);
7718         return ret;
7719 }
7720
7721 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7722 {
7723         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7724         struct net *net;
7725         int err;
7726         u32 pid;
7727
7728         if (!info->attrs[NL80211_ATTR_PID])
7729                 return -EINVAL;
7730
7731         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7732
7733         net = get_net_ns_by_pid(pid);
7734         if (IS_ERR(net))
7735                 return PTR_ERR(net);
7736
7737         err = 0;
7738
7739         /* check if anything to do */
7740         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7741                 err = cfg80211_switch_netns(rdev, net);
7742
7743         put_net(net);
7744         return err;
7745 }
7746
7747 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7748 {
7749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7750         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7751                         struct cfg80211_pmksa *pmksa) = NULL;
7752         struct net_device *dev = info->user_ptr[1];
7753         struct cfg80211_pmksa pmksa;
7754
7755         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7756
7757         if (!info->attrs[NL80211_ATTR_MAC])
7758                 return -EINVAL;
7759
7760         if (!info->attrs[NL80211_ATTR_PMKID])
7761                 return -EINVAL;
7762
7763         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7764         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7765
7766         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7767             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7768                 return -EOPNOTSUPP;
7769
7770         switch (info->genlhdr->cmd) {
7771         case NL80211_CMD_SET_PMKSA:
7772                 rdev_ops = rdev->ops->set_pmksa;
7773                 break;
7774         case NL80211_CMD_DEL_PMKSA:
7775                 rdev_ops = rdev->ops->del_pmksa;
7776                 break;
7777         default:
7778                 WARN_ON(1);
7779                 break;
7780         }
7781
7782         if (!rdev_ops)
7783                 return -EOPNOTSUPP;
7784
7785         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7786 }
7787
7788 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7789 {
7790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7791         struct net_device *dev = info->user_ptr[1];
7792
7793         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7794             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7795                 return -EOPNOTSUPP;
7796
7797         if (!rdev->ops->flush_pmksa)
7798                 return -EOPNOTSUPP;
7799
7800         return rdev_flush_pmksa(rdev, dev);
7801 }
7802
7803 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7804 {
7805         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7806         struct net_device *dev = info->user_ptr[1];
7807         u8 action_code, dialog_token;
7808         u32 peer_capability = 0;
7809         u16 status_code;
7810         u8 *peer;
7811         bool initiator;
7812
7813         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7814             !rdev->ops->tdls_mgmt)
7815                 return -EOPNOTSUPP;
7816
7817         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7818             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7819             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7820             !info->attrs[NL80211_ATTR_IE] ||
7821             !info->attrs[NL80211_ATTR_MAC])
7822                 return -EINVAL;
7823
7824         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7825         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7826         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7827         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7828         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7829         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7830                 peer_capability =
7831                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7832
7833         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7834                               dialog_token, status_code, peer_capability,
7835                               initiator,
7836                               nla_data(info->attrs[NL80211_ATTR_IE]),
7837                               nla_len(info->attrs[NL80211_ATTR_IE]));
7838 }
7839
7840 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7841 {
7842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7843         struct net_device *dev = info->user_ptr[1];
7844         enum nl80211_tdls_operation operation;
7845         u8 *peer;
7846
7847         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7848             !rdev->ops->tdls_oper)
7849                 return -EOPNOTSUPP;
7850
7851         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7852             !info->attrs[NL80211_ATTR_MAC])
7853                 return -EINVAL;
7854
7855         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7856         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7857
7858         return rdev_tdls_oper(rdev, dev, peer, operation);
7859 }
7860
7861 static int nl80211_remain_on_channel(struct sk_buff *skb,
7862                                      struct genl_info *info)
7863 {
7864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7865         struct wireless_dev *wdev = info->user_ptr[1];
7866         struct cfg80211_chan_def chandef;
7867         struct sk_buff *msg;
7868         void *hdr;
7869         u64 cookie;
7870         u32 duration;
7871         int err;
7872
7873         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7874             !info->attrs[NL80211_ATTR_DURATION])
7875                 return -EINVAL;
7876
7877         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7878
7879         if (!rdev->ops->remain_on_channel ||
7880             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7881                 return -EOPNOTSUPP;
7882
7883         /*
7884          * We should be on that channel for at least a minimum amount of
7885          * time (10ms) but no longer than the driver supports.
7886          */
7887         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7888             duration > rdev->wiphy.max_remain_on_channel_duration)
7889                 return -EINVAL;
7890
7891         err = nl80211_parse_chandef(rdev, info, &chandef);
7892         if (err)
7893                 return err;
7894
7895         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7896         if (!msg)
7897                 return -ENOMEM;
7898
7899         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7900                              NL80211_CMD_REMAIN_ON_CHANNEL);
7901         if (!hdr) {
7902                 err = -ENOBUFS;
7903                 goto free_msg;
7904         }
7905
7906         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7907                                      duration, &cookie);
7908
7909         if (err)
7910                 goto free_msg;
7911
7912         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7913                 goto nla_put_failure;
7914
7915         genlmsg_end(msg, hdr);
7916
7917         return genlmsg_reply(msg, info);
7918
7919  nla_put_failure:
7920         err = -ENOBUFS;
7921  free_msg:
7922         nlmsg_free(msg);
7923         return err;
7924 }
7925
7926 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7927                                             struct genl_info *info)
7928 {
7929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7930         struct wireless_dev *wdev = info->user_ptr[1];
7931         u64 cookie;
7932
7933         if (!info->attrs[NL80211_ATTR_COOKIE])
7934                 return -EINVAL;
7935
7936         if (!rdev->ops->cancel_remain_on_channel)
7937                 return -EOPNOTSUPP;
7938
7939         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7940
7941         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7942 }
7943
7944 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7945                            u8 *rates, u8 rates_len)
7946 {
7947         u8 i;
7948         u32 mask = 0;
7949
7950         for (i = 0; i < rates_len; i++) {
7951                 int rate = (rates[i] & 0x7f) * 5;
7952                 int ridx;
7953                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7954                         struct ieee80211_rate *srate =
7955                                 &sband->bitrates[ridx];
7956                         if (rate == srate->bitrate) {
7957                                 mask |= 1 << ridx;
7958                                 break;
7959                         }
7960                 }
7961                 if (ridx == sband->n_bitrates)
7962                         return 0; /* rate not found */
7963         }
7964
7965         return mask;
7966 }
7967
7968 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7969                                u8 *rates, u8 rates_len,
7970                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7971 {
7972         u8 i;
7973
7974         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7975
7976         for (i = 0; i < rates_len; i++) {
7977                 int ridx, rbit;
7978
7979                 ridx = rates[i] / 8;
7980                 rbit = BIT(rates[i] % 8);
7981
7982                 /* check validity */
7983                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7984                         return false;
7985
7986                 /* check availability */
7987                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7988                         mcs[ridx] |= rbit;
7989                 else
7990                         return false;
7991         }
7992
7993         return true;
7994 }
7995
7996 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7997 {
7998         u16 mcs_mask = 0;
7999
8000         switch (vht_mcs_map) {
8001         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8002                 break;
8003         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8004                 mcs_mask = 0x00FF;
8005                 break;
8006         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8007                 mcs_mask = 0x01FF;
8008                 break;
8009         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8010                 mcs_mask = 0x03FF;
8011                 break;
8012         default:
8013                 break;
8014         }
8015
8016         return mcs_mask;
8017 }
8018
8019 static void vht_build_mcs_mask(u16 vht_mcs_map,
8020                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8021 {
8022         u8 nss;
8023
8024         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8025                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8026                 vht_mcs_map >>= 2;
8027         }
8028 }
8029
8030 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8031                              struct nl80211_txrate_vht *txrate,
8032                              u16 mcs[NL80211_VHT_NSS_MAX])
8033 {
8034         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8035         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8036         u8 i;
8037
8038         if (!sband->vht_cap.vht_supported)
8039                 return false;
8040
8041         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8042
8043         /* Build vht_mcs_mask from VHT capabilities */
8044         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8045
8046         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8047                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8048                         mcs[i] = txrate->mcs[i];
8049                 else
8050                         return false;
8051         }
8052
8053         return true;
8054 }
8055
8056 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8057         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8058                                     .len = NL80211_MAX_SUPP_RATES },
8059         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8060                                 .len = NL80211_MAX_SUPP_HT_RATES },
8061         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8062         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8063 };
8064
8065 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8066                                        struct genl_info *info)
8067 {
8068         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8069         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8070         struct cfg80211_bitrate_mask mask;
8071         int rem, i;
8072         struct net_device *dev = info->user_ptr[1];
8073         struct nlattr *tx_rates;
8074         struct ieee80211_supported_band *sband;
8075         u16 vht_tx_mcs_map;
8076
8077         if (!rdev->ops->set_bitrate_mask)
8078                 return -EOPNOTSUPP;
8079
8080         memset(&mask, 0, sizeof(mask));
8081         /* Default to all rates enabled */
8082         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8083                 sband = rdev->wiphy.bands[i];
8084
8085                 if (!sband)
8086                         continue;
8087
8088                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8089                 memcpy(mask.control[i].ht_mcs,
8090                        sband->ht_cap.mcs.rx_mask,
8091                        sizeof(mask.control[i].ht_mcs));
8092
8093                 if (!sband->vht_cap.vht_supported)
8094                         continue;
8095
8096                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8097                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8098         }
8099
8100         /* if no rates are given set it back to the defaults */
8101         if (!info->attrs[NL80211_ATTR_TX_RATES])
8102                 goto out;
8103
8104         /*
8105          * The nested attribute uses enum nl80211_band as the index. This maps
8106          * directly to the enum ieee80211_band values used in cfg80211.
8107          */
8108         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8109         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8110                 enum ieee80211_band band = nla_type(tx_rates);
8111                 int err;
8112
8113                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8114                         return -EINVAL;
8115                 sband = rdev->wiphy.bands[band];
8116                 if (sband == NULL)
8117                         return -EINVAL;
8118                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8119                                 nla_len(tx_rates), nl80211_txattr_policy);
8120                 if (err)
8121                         return err;
8122                 if (tb[NL80211_TXRATE_LEGACY]) {
8123                         mask.control[band].legacy = rateset_to_mask(
8124                                 sband,
8125                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8126                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8127                         if ((mask.control[band].legacy == 0) &&
8128                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8129                                 return -EINVAL;
8130                 }
8131                 if (tb[NL80211_TXRATE_HT]) {
8132                         if (!ht_rateset_to_mask(
8133                                         sband,
8134                                         nla_data(tb[NL80211_TXRATE_HT]),
8135                                         nla_len(tb[NL80211_TXRATE_HT]),
8136                                         mask.control[band].ht_mcs))
8137                                 return -EINVAL;
8138                 }
8139                 if (tb[NL80211_TXRATE_VHT]) {
8140                         if (!vht_set_mcs_mask(
8141                                         sband,
8142                                         nla_data(tb[NL80211_TXRATE_VHT]),
8143                                         mask.control[band].vht_mcs))
8144                                 return -EINVAL;
8145                 }
8146                 if (tb[NL80211_TXRATE_GI]) {
8147                         mask.control[band].gi =
8148                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8149                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8150                                 return -EINVAL;
8151                 }
8152
8153                 if (mask.control[band].legacy == 0) {
8154                         /* don't allow empty legacy rates if HT or VHT
8155                          * are not even supported.
8156                          */
8157                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8158                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8159                                 return -EINVAL;
8160
8161                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8162                                 if (mask.control[band].ht_mcs[i])
8163                                         goto out;
8164
8165                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8166                                 if (mask.control[band].vht_mcs[i])
8167                                         goto out;
8168
8169                         /* legacy and mcs rates may not be both empty */
8170                         return -EINVAL;
8171                 }
8172         }
8173
8174 out:
8175         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8176 }
8177
8178 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8179 {
8180         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8181         struct wireless_dev *wdev = info->user_ptr[1];
8182         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8183
8184         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8185                 return -EINVAL;
8186
8187         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8188                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8189
8190         switch (wdev->iftype) {
8191         case NL80211_IFTYPE_STATION:
8192         case NL80211_IFTYPE_ADHOC:
8193         case NL80211_IFTYPE_P2P_CLIENT:
8194         case NL80211_IFTYPE_AP:
8195         case NL80211_IFTYPE_AP_VLAN:
8196         case NL80211_IFTYPE_MESH_POINT:
8197         case NL80211_IFTYPE_P2P_GO:
8198         case NL80211_IFTYPE_P2P_DEVICE:
8199                 break;
8200         default:
8201                 return -EOPNOTSUPP;
8202         }
8203
8204         /* not much point in registering if we can't reply */
8205         if (!rdev->ops->mgmt_tx)
8206                 return -EOPNOTSUPP;
8207
8208         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8209                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8210                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8211 }
8212
8213 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8214 {
8215         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8216         struct wireless_dev *wdev = info->user_ptr[1];
8217         struct cfg80211_chan_def chandef;
8218         int err;
8219         void *hdr = NULL;
8220         u64 cookie;
8221         struct sk_buff *msg = NULL;
8222         struct cfg80211_mgmt_tx_params params = {
8223                 .dont_wait_for_ack =
8224                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8225         };
8226
8227         if (!info->attrs[NL80211_ATTR_FRAME])
8228                 return -EINVAL;
8229
8230         if (!rdev->ops->mgmt_tx)
8231                 return -EOPNOTSUPP;
8232
8233         switch (wdev->iftype) {
8234         case NL80211_IFTYPE_P2P_DEVICE:
8235                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8236                         return -EINVAL;
8237         case NL80211_IFTYPE_STATION:
8238         case NL80211_IFTYPE_ADHOC:
8239         case NL80211_IFTYPE_P2P_CLIENT:
8240         case NL80211_IFTYPE_AP:
8241         case NL80211_IFTYPE_AP_VLAN:
8242         case NL80211_IFTYPE_MESH_POINT:
8243         case NL80211_IFTYPE_P2P_GO:
8244                 break;
8245         default:
8246                 return -EOPNOTSUPP;
8247         }
8248
8249         if (info->attrs[NL80211_ATTR_DURATION]) {
8250                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8251                         return -EINVAL;
8252                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8253
8254                 /*
8255                  * We should wait on the channel for at least a minimum amount
8256                  * of time (10ms) but no longer than the driver supports.
8257                  */
8258                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8259                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8260                         return -EINVAL;
8261
8262         }
8263
8264         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8265
8266         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8267                 return -EINVAL;
8268
8269         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8270
8271         /* get the channel if any has been specified, otherwise pass NULL to
8272          * the driver. The latter will use the current one
8273          */
8274         chandef.chan = NULL;
8275         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8276                 err = nl80211_parse_chandef(rdev, info, &chandef);
8277                 if (err)
8278                         return err;
8279         }
8280
8281         if (!chandef.chan && params.offchan)
8282                 return -EINVAL;
8283
8284         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8285         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8286
8287         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8288                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8289                 int i;
8290
8291                 if (len % sizeof(u16))
8292                         return -EINVAL;
8293
8294                 params.n_csa_offsets = len / sizeof(u16);
8295                 params.csa_offsets =
8296                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8297
8298                 /* check that all the offsets fit the frame */
8299                 for (i = 0; i < params.n_csa_offsets; i++) {
8300                         if (params.csa_offsets[i] >= params.len)
8301                                 return -EINVAL;
8302                 }
8303         }
8304
8305         if (!params.dont_wait_for_ack) {
8306                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8307                 if (!msg)
8308                         return -ENOMEM;
8309
8310                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8311                                      NL80211_CMD_FRAME);
8312                 if (!hdr) {
8313                         err = -ENOBUFS;
8314                         goto free_msg;
8315                 }
8316         }
8317
8318         params.chan = chandef.chan;
8319         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8320         if (err)
8321                 goto free_msg;
8322
8323         if (msg) {
8324                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8325                         goto nla_put_failure;
8326
8327                 genlmsg_end(msg, hdr);
8328                 return genlmsg_reply(msg, info);
8329         }
8330
8331         return 0;
8332
8333  nla_put_failure:
8334         err = -ENOBUFS;
8335  free_msg:
8336         nlmsg_free(msg);
8337         return err;
8338 }
8339
8340 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8341 {
8342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8343         struct wireless_dev *wdev = info->user_ptr[1];
8344         u64 cookie;
8345
8346         if (!info->attrs[NL80211_ATTR_COOKIE])
8347                 return -EINVAL;
8348
8349         if (!rdev->ops->mgmt_tx_cancel_wait)
8350                 return -EOPNOTSUPP;
8351
8352         switch (wdev->iftype) {
8353         case NL80211_IFTYPE_STATION:
8354         case NL80211_IFTYPE_ADHOC:
8355         case NL80211_IFTYPE_P2P_CLIENT:
8356         case NL80211_IFTYPE_AP:
8357         case NL80211_IFTYPE_AP_VLAN:
8358         case NL80211_IFTYPE_P2P_GO:
8359         case NL80211_IFTYPE_P2P_DEVICE:
8360                 break;
8361         default:
8362                 return -EOPNOTSUPP;
8363         }
8364
8365         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8366
8367         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8368 }
8369
8370 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8371 {
8372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8373         struct wireless_dev *wdev;
8374         struct net_device *dev = info->user_ptr[1];
8375         u8 ps_state;
8376         bool state;
8377         int err;
8378
8379         if (!info->attrs[NL80211_ATTR_PS_STATE])
8380                 return -EINVAL;
8381
8382         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8383
8384         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8385                 return -EINVAL;
8386
8387         wdev = dev->ieee80211_ptr;
8388
8389         if (!rdev->ops->set_power_mgmt)
8390                 return -EOPNOTSUPP;
8391
8392         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8393
8394         if (state == wdev->ps)
8395                 return 0;
8396
8397         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8398         if (!err)
8399                 wdev->ps = state;
8400         return err;
8401 }
8402
8403 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8404 {
8405         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8406         enum nl80211_ps_state ps_state;
8407         struct wireless_dev *wdev;
8408         struct net_device *dev = info->user_ptr[1];
8409         struct sk_buff *msg;
8410         void *hdr;
8411         int err;
8412
8413         wdev = dev->ieee80211_ptr;
8414
8415         if (!rdev->ops->set_power_mgmt)
8416                 return -EOPNOTSUPP;
8417
8418         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8419         if (!msg)
8420                 return -ENOMEM;
8421
8422         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8423                              NL80211_CMD_GET_POWER_SAVE);
8424         if (!hdr) {
8425                 err = -ENOBUFS;
8426                 goto free_msg;
8427         }
8428
8429         if (wdev->ps)
8430                 ps_state = NL80211_PS_ENABLED;
8431         else
8432                 ps_state = NL80211_PS_DISABLED;
8433
8434         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8435                 goto nla_put_failure;
8436
8437         genlmsg_end(msg, hdr);
8438         return genlmsg_reply(msg, info);
8439
8440  nla_put_failure:
8441         err = -ENOBUFS;
8442  free_msg:
8443         nlmsg_free(msg);
8444         return err;
8445 }
8446
8447 static const struct nla_policy
8448 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8449         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8450         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8451         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8452         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8453         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8454         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8455 };
8456
8457 static int nl80211_set_cqm_txe(struct genl_info *info,
8458                                u32 rate, u32 pkts, u32 intvl)
8459 {
8460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8461         struct net_device *dev = info->user_ptr[1];
8462         struct wireless_dev *wdev = dev->ieee80211_ptr;
8463
8464         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8465                 return -EINVAL;
8466
8467         if (!rdev->ops->set_cqm_txe_config)
8468                 return -EOPNOTSUPP;
8469
8470         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8471             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8472                 return -EOPNOTSUPP;
8473
8474         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8475 }
8476
8477 static int nl80211_set_cqm_rssi(struct genl_info *info,
8478                                 s32 threshold, u32 hysteresis)
8479 {
8480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8481         struct net_device *dev = info->user_ptr[1];
8482         struct wireless_dev *wdev = dev->ieee80211_ptr;
8483
8484         if (threshold > 0)
8485                 return -EINVAL;
8486
8487         /* disabling - hysteresis should also be zero then */
8488         if (threshold == 0)
8489                 hysteresis = 0;
8490
8491         if (!rdev->ops->set_cqm_rssi_config)
8492                 return -EOPNOTSUPP;
8493
8494         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8495             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8496                 return -EOPNOTSUPP;
8497
8498         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8499 }
8500
8501 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8502 {
8503         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8504         struct nlattr *cqm;
8505         int err;
8506
8507         cqm = info->attrs[NL80211_ATTR_CQM];
8508         if (!cqm)
8509                 return -EINVAL;
8510
8511         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8512                                nl80211_attr_cqm_policy);
8513         if (err)
8514                 return err;
8515
8516         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8517             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8518                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8519                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8520
8521                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8522         }
8523
8524         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8525             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8526             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8527                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8528                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8529                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8530
8531                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8532         }
8533
8534         return -EINVAL;
8535 }
8536
8537 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8538 {
8539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8540         struct net_device *dev = info->user_ptr[1];
8541         struct ocb_setup setup = {};
8542         int err;
8543
8544         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8545         if (err)
8546                 return err;
8547
8548         return cfg80211_join_ocb(rdev, dev, &setup);
8549 }
8550
8551 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8552 {
8553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8554         struct net_device *dev = info->user_ptr[1];
8555
8556         return cfg80211_leave_ocb(rdev, dev);
8557 }
8558
8559 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8560 {
8561         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8562         struct net_device *dev = info->user_ptr[1];
8563         struct mesh_config cfg;
8564         struct mesh_setup setup;
8565         int err;
8566
8567         /* start with default */
8568         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8569         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8570
8571         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8572                 /* and parse parameters if given */
8573                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8574                 if (err)
8575                         return err;
8576         }
8577
8578         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8579             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8580                 return -EINVAL;
8581
8582         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8583         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8584
8585         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8586             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8587                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8588                         return -EINVAL;
8589
8590         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8591                 setup.beacon_interval =
8592                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8593                 if (setup.beacon_interval < 10 ||
8594                     setup.beacon_interval > 10000)
8595                         return -EINVAL;
8596         }
8597
8598         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8599                 setup.dtim_period =
8600                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8601                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8602                         return -EINVAL;
8603         }
8604
8605         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8606                 /* parse additional setup parameters if given */
8607                 err = nl80211_parse_mesh_setup(info, &setup);
8608                 if (err)
8609                         return err;
8610         }
8611
8612         if (setup.user_mpm)
8613                 cfg.auto_open_plinks = false;
8614
8615         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8616                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8617                 if (err)
8618                         return err;
8619         } else {
8620                 /* cfg80211_join_mesh() will sort it out */
8621                 setup.chandef.chan = NULL;
8622         }
8623
8624         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8625                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8626                 int n_rates =
8627                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8628                 struct ieee80211_supported_band *sband;
8629
8630                 if (!setup.chandef.chan)
8631                         return -EINVAL;
8632
8633                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8634
8635                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8636                                              &setup.basic_rates);
8637                 if (err)
8638                         return err;
8639         }
8640
8641         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8642 }
8643
8644 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8645 {
8646         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8647         struct net_device *dev = info->user_ptr[1];
8648
8649         return cfg80211_leave_mesh(rdev, dev);
8650 }
8651
8652 #ifdef CONFIG_PM
8653 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8654                                         struct cfg80211_registered_device *rdev)
8655 {
8656         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8657         struct nlattr *nl_pats, *nl_pat;
8658         int i, pat_len;
8659
8660         if (!wowlan->n_patterns)
8661                 return 0;
8662
8663         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8664         if (!nl_pats)
8665                 return -ENOBUFS;
8666
8667         for (i = 0; i < wowlan->n_patterns; i++) {
8668                 nl_pat = nla_nest_start(msg, i + 1);
8669                 if (!nl_pat)
8670                         return -ENOBUFS;
8671                 pat_len = wowlan->patterns[i].pattern_len;
8672                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8673                             wowlan->patterns[i].mask) ||
8674                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8675                             wowlan->patterns[i].pattern) ||
8676                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8677                                 wowlan->patterns[i].pkt_offset))
8678                         return -ENOBUFS;
8679                 nla_nest_end(msg, nl_pat);
8680         }
8681         nla_nest_end(msg, nl_pats);
8682
8683         return 0;
8684 }
8685
8686 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8687                                    struct cfg80211_wowlan_tcp *tcp)
8688 {
8689         struct nlattr *nl_tcp;
8690
8691         if (!tcp)
8692                 return 0;
8693
8694         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8695         if (!nl_tcp)
8696                 return -ENOBUFS;
8697
8698         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8699             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8700             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8701             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8702             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8703             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8704                     tcp->payload_len, tcp->payload) ||
8705             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8706                         tcp->data_interval) ||
8707             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8708                     tcp->wake_len, tcp->wake_data) ||
8709             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8710                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8711                 return -ENOBUFS;
8712
8713         if (tcp->payload_seq.len &&
8714             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8715                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8716                 return -ENOBUFS;
8717
8718         if (tcp->payload_tok.len &&
8719             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8720                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8721                     &tcp->payload_tok))
8722                 return -ENOBUFS;
8723
8724         nla_nest_end(msg, nl_tcp);
8725
8726         return 0;
8727 }
8728
8729 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8730 {
8731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8732         struct sk_buff *msg;
8733         void *hdr;
8734         u32 size = NLMSG_DEFAULT_SIZE;
8735
8736         if (!rdev->wiphy.wowlan)
8737                 return -EOPNOTSUPP;
8738
8739         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8740                 /* adjust size to have room for all the data */
8741                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8742                         rdev->wiphy.wowlan_config->tcp->payload_len +
8743                         rdev->wiphy.wowlan_config->tcp->wake_len +
8744                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8745         }
8746
8747         msg = nlmsg_new(size, GFP_KERNEL);
8748         if (!msg)
8749                 return -ENOMEM;
8750
8751         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8752                              NL80211_CMD_GET_WOWLAN);
8753         if (!hdr)
8754                 goto nla_put_failure;
8755
8756         if (rdev->wiphy.wowlan_config) {
8757                 struct nlattr *nl_wowlan;
8758
8759                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8760                 if (!nl_wowlan)
8761                         goto nla_put_failure;
8762
8763                 if ((rdev->wiphy.wowlan_config->any &&
8764                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8765                     (rdev->wiphy.wowlan_config->disconnect &&
8766                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8767                     (rdev->wiphy.wowlan_config->magic_pkt &&
8768                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8769                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8770                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8771                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8772                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8773                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8774                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8775                     (rdev->wiphy.wowlan_config->rfkill_release &&
8776                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8777                         goto nla_put_failure;
8778
8779                 if (nl80211_send_wowlan_patterns(msg, rdev))
8780                         goto nla_put_failure;
8781
8782                 if (nl80211_send_wowlan_tcp(msg,
8783                                             rdev->wiphy.wowlan_config->tcp))
8784                         goto nla_put_failure;
8785
8786                 nla_nest_end(msg, nl_wowlan);
8787         }
8788
8789         genlmsg_end(msg, hdr);
8790         return genlmsg_reply(msg, info);
8791
8792 nla_put_failure:
8793         nlmsg_free(msg);
8794         return -ENOBUFS;
8795 }
8796
8797 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8798                                     struct nlattr *attr,
8799                                     struct cfg80211_wowlan *trig)
8800 {
8801         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8802         struct cfg80211_wowlan_tcp *cfg;
8803         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8804         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8805         u32 size;
8806         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8807         int err, port;
8808
8809         if (!rdev->wiphy.wowlan->tcp)
8810                 return -EINVAL;
8811
8812         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8813                         nla_data(attr), nla_len(attr),
8814                         nl80211_wowlan_tcp_policy);
8815         if (err)
8816                 return err;
8817
8818         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8819             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8820             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8821             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8822             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8823             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8824             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8825             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8826                 return -EINVAL;
8827
8828         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8829         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8830                 return -EINVAL;
8831
8832         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8833                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8834             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8835                 return -EINVAL;
8836
8837         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8838         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8839                 return -EINVAL;
8840
8841         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8842         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8843                 return -EINVAL;
8844
8845         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8846                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8847
8848                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8849                 tokens_size = tokln - sizeof(*tok);
8850
8851                 if (!tok->len || tokens_size % tok->len)
8852                         return -EINVAL;
8853                 if (!rdev->wiphy.wowlan->tcp->tok)
8854                         return -EINVAL;
8855                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8856                         return -EINVAL;
8857                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8858                         return -EINVAL;
8859                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8860                         return -EINVAL;
8861                 if (tok->offset + tok->len > data_size)
8862                         return -EINVAL;
8863         }
8864
8865         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8866                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8867                 if (!rdev->wiphy.wowlan->tcp->seq)
8868                         return -EINVAL;
8869                 if (seq->len == 0 || seq->len > 4)
8870                         return -EINVAL;
8871                 if (seq->len + seq->offset > data_size)
8872                         return -EINVAL;
8873         }
8874
8875         size = sizeof(*cfg);
8876         size += data_size;
8877         size += wake_size + wake_mask_size;
8878         size += tokens_size;
8879
8880         cfg = kzalloc(size, GFP_KERNEL);
8881         if (!cfg)
8882                 return -ENOMEM;
8883         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8884         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8885         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8886                ETH_ALEN);
8887         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8888                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8889         else
8890                 port = 0;
8891 #ifdef CONFIG_INET
8892         /* allocate a socket and port for it and use it */
8893         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8894                             IPPROTO_TCP, &cfg->sock, 1);
8895         if (err) {
8896                 kfree(cfg);
8897                 return err;
8898         }
8899         if (inet_csk_get_port(cfg->sock->sk, port)) {
8900                 sock_release(cfg->sock);
8901                 kfree(cfg);
8902                 return -EADDRINUSE;
8903         }
8904         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8905 #else
8906         if (!port) {
8907                 kfree(cfg);
8908                 return -EINVAL;
8909         }
8910         cfg->src_port = port;
8911 #endif
8912
8913         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8914         cfg->payload_len = data_size;
8915         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8916         memcpy((void *)cfg->payload,
8917                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8918                data_size);
8919         if (seq)
8920                 cfg->payload_seq = *seq;
8921         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8922         cfg->wake_len = wake_size;
8923         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8924         memcpy((void *)cfg->wake_data,
8925                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8926                wake_size);
8927         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8928                          data_size + wake_size;
8929         memcpy((void *)cfg->wake_mask,
8930                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8931                wake_mask_size);
8932         if (tok) {
8933                 cfg->tokens_size = tokens_size;
8934                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8935         }
8936
8937         trig->tcp = cfg;
8938
8939         return 0;
8940 }
8941
8942 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8943                                    const struct wiphy_wowlan_support *wowlan,
8944                                    struct nlattr *attr,
8945                                    struct cfg80211_wowlan *trig)
8946 {
8947         struct nlattr **tb;
8948         int err;
8949
8950         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8951         if (!tb)
8952                 return -ENOMEM;
8953
8954         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8955                 err = -EOPNOTSUPP;
8956                 goto out;
8957         }
8958
8959         err = nla_parse(tb, NL80211_ATTR_MAX,
8960                         nla_data(attr), nla_len(attr),
8961                         nl80211_policy);
8962         if (err)
8963                 goto out;
8964
8965         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8966         err = PTR_ERR_OR_ZERO(trig->nd_config);
8967         if (err)
8968                 trig->nd_config = NULL;
8969
8970 out:
8971         kfree(tb);
8972         return err;
8973 }
8974
8975 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8976 {
8977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8978         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8979         struct cfg80211_wowlan new_triggers = {};
8980         struct cfg80211_wowlan *ntrig;
8981         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8982         int err, i;
8983         bool prev_enabled = rdev->wiphy.wowlan_config;
8984
8985         if (!wowlan)
8986                 return -EOPNOTSUPP;
8987
8988         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8989                 cfg80211_rdev_free_wowlan(rdev);
8990                 rdev->wiphy.wowlan_config = NULL;
8991                 goto set_wakeup;
8992         }
8993
8994         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8995                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8996                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8997                         nl80211_wowlan_policy);
8998         if (err)
8999                 return err;
9000
9001         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9002                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9003                         return -EINVAL;
9004                 new_triggers.any = true;
9005         }
9006
9007         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9008                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9009                         return -EINVAL;
9010                 new_triggers.disconnect = true;
9011         }
9012
9013         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9014                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9015                         return -EINVAL;
9016                 new_triggers.magic_pkt = true;
9017         }
9018
9019         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9020                 return -EINVAL;
9021
9022         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9023                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9024                         return -EINVAL;
9025                 new_triggers.gtk_rekey_failure = true;
9026         }
9027
9028         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9029                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9030                         return -EINVAL;
9031                 new_triggers.eap_identity_req = true;
9032         }
9033
9034         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9035                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9036                         return -EINVAL;
9037                 new_triggers.four_way_handshake = true;
9038         }
9039
9040         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9041                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9042                         return -EINVAL;
9043                 new_triggers.rfkill_release = true;
9044         }
9045
9046         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9047                 struct nlattr *pat;
9048                 int n_patterns = 0;
9049                 int rem, pat_len, mask_len, pkt_offset;
9050                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9051
9052                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9053                                     rem)
9054                         n_patterns++;
9055                 if (n_patterns > wowlan->n_patterns)
9056                         return -EINVAL;
9057
9058                 new_triggers.patterns = kcalloc(n_patterns,
9059                                                 sizeof(new_triggers.patterns[0]),
9060                                                 GFP_KERNEL);
9061                 if (!new_triggers.patterns)
9062                         return -ENOMEM;
9063
9064                 new_triggers.n_patterns = n_patterns;
9065                 i = 0;
9066
9067                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9068                                     rem) {
9069                         u8 *mask_pat;
9070
9071                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9072                                   nla_len(pat), NULL);
9073                         err = -EINVAL;
9074                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9075                             !pat_tb[NL80211_PKTPAT_PATTERN])
9076                                 goto error;
9077                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9078                         mask_len = DIV_ROUND_UP(pat_len, 8);
9079                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9080                                 goto error;
9081                         if (pat_len > wowlan->pattern_max_len ||
9082                             pat_len < wowlan->pattern_min_len)
9083                                 goto error;
9084
9085                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9086                                 pkt_offset = 0;
9087                         else
9088                                 pkt_offset = nla_get_u32(
9089                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9090                         if (pkt_offset > wowlan->max_pkt_offset)
9091                                 goto error;
9092                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9093
9094                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9095                         if (!mask_pat) {
9096                                 err = -ENOMEM;
9097                                 goto error;
9098                         }
9099                         new_triggers.patterns[i].mask = mask_pat;
9100                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9101                                mask_len);
9102                         mask_pat += mask_len;
9103                         new_triggers.patterns[i].pattern = mask_pat;
9104                         new_triggers.patterns[i].pattern_len = pat_len;
9105                         memcpy(mask_pat,
9106                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9107                                pat_len);
9108                         i++;
9109                 }
9110         }
9111
9112         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9113                 err = nl80211_parse_wowlan_tcp(
9114                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9115                         &new_triggers);
9116                 if (err)
9117                         goto error;
9118         }
9119
9120         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9121                 err = nl80211_parse_wowlan_nd(
9122                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9123                         &new_triggers);
9124                 if (err)
9125                         goto error;
9126         }
9127
9128         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9129         if (!ntrig) {
9130                 err = -ENOMEM;
9131                 goto error;
9132         }
9133         cfg80211_rdev_free_wowlan(rdev);
9134         rdev->wiphy.wowlan_config = ntrig;
9135
9136  set_wakeup:
9137         if (rdev->ops->set_wakeup &&
9138             prev_enabled != !!rdev->wiphy.wowlan_config)
9139                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9140
9141         return 0;
9142  error:
9143         for (i = 0; i < new_triggers.n_patterns; i++)
9144                 kfree(new_triggers.patterns[i].mask);
9145         kfree(new_triggers.patterns);
9146         if (new_triggers.tcp && new_triggers.tcp->sock)
9147                 sock_release(new_triggers.tcp->sock);
9148         kfree(new_triggers.tcp);
9149         return err;
9150 }
9151 #endif
9152
9153 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9154                                        struct cfg80211_registered_device *rdev)
9155 {
9156         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9157         int i, j, pat_len;
9158         struct cfg80211_coalesce_rules *rule;
9159
9160         if (!rdev->coalesce->n_rules)
9161                 return 0;
9162
9163         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9164         if (!nl_rules)
9165                 return -ENOBUFS;
9166
9167         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9168                 nl_rule = nla_nest_start(msg, i + 1);
9169                 if (!nl_rule)
9170                         return -ENOBUFS;
9171
9172                 rule = &rdev->coalesce->rules[i];
9173                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9174                                 rule->delay))
9175                         return -ENOBUFS;
9176
9177                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9178                                 rule->condition))
9179                         return -ENOBUFS;
9180
9181                 nl_pats = nla_nest_start(msg,
9182                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9183                 if (!nl_pats)
9184                         return -ENOBUFS;
9185
9186                 for (j = 0; j < rule->n_patterns; j++) {
9187                         nl_pat = nla_nest_start(msg, j + 1);
9188                         if (!nl_pat)
9189                                 return -ENOBUFS;
9190                         pat_len = rule->patterns[j].pattern_len;
9191                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9192                                     DIV_ROUND_UP(pat_len, 8),
9193                                     rule->patterns[j].mask) ||
9194                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9195                                     rule->patterns[j].pattern) ||
9196                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9197                                         rule->patterns[j].pkt_offset))
9198                                 return -ENOBUFS;
9199                         nla_nest_end(msg, nl_pat);
9200                 }
9201                 nla_nest_end(msg, nl_pats);
9202                 nla_nest_end(msg, nl_rule);
9203         }
9204         nla_nest_end(msg, nl_rules);
9205
9206         return 0;
9207 }
9208
9209 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9210 {
9211         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9212         struct sk_buff *msg;
9213         void *hdr;
9214
9215         if (!rdev->wiphy.coalesce)
9216                 return -EOPNOTSUPP;
9217
9218         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9219         if (!msg)
9220                 return -ENOMEM;
9221
9222         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9223                              NL80211_CMD_GET_COALESCE);
9224         if (!hdr)
9225                 goto nla_put_failure;
9226
9227         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9228                 goto nla_put_failure;
9229
9230         genlmsg_end(msg, hdr);
9231         return genlmsg_reply(msg, info);
9232
9233 nla_put_failure:
9234         nlmsg_free(msg);
9235         return -ENOBUFS;
9236 }
9237
9238 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9239 {
9240         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9241         int i, j;
9242         struct cfg80211_coalesce_rules *rule;
9243
9244         if (!coalesce)
9245                 return;
9246
9247         for (i = 0; i < coalesce->n_rules; i++) {
9248                 rule = &coalesce->rules[i];
9249                 for (j = 0; j < rule->n_patterns; j++)
9250                         kfree(rule->patterns[j].mask);
9251                 kfree(rule->patterns);
9252         }
9253         kfree(coalesce->rules);
9254         kfree(coalesce);
9255         rdev->coalesce = NULL;
9256 }
9257
9258 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9259                                        struct nlattr *rule,
9260                                        struct cfg80211_coalesce_rules *new_rule)
9261 {
9262         int err, i;
9263         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9264         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9265         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9266         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9267
9268         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9269                         nla_len(rule), nl80211_coalesce_policy);
9270         if (err)
9271                 return err;
9272
9273         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9274                 new_rule->delay =
9275                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9276         if (new_rule->delay > coalesce->max_delay)
9277                 return -EINVAL;
9278
9279         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9280                 new_rule->condition =
9281                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9282         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9283             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9284                 return -EINVAL;
9285
9286         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9287                 return -EINVAL;
9288
9289         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9290                             rem)
9291                 n_patterns++;
9292         if (n_patterns > coalesce->n_patterns)
9293                 return -EINVAL;
9294
9295         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9296                                      GFP_KERNEL);
9297         if (!new_rule->patterns)
9298                 return -ENOMEM;
9299
9300         new_rule->n_patterns = n_patterns;
9301         i = 0;
9302
9303         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9304                             rem) {
9305                 u8 *mask_pat;
9306
9307                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9308                           nla_len(pat), NULL);
9309                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9310                     !pat_tb[NL80211_PKTPAT_PATTERN])
9311                         return -EINVAL;
9312                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9313                 mask_len = DIV_ROUND_UP(pat_len, 8);
9314                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9315                         return -EINVAL;
9316                 if (pat_len > coalesce->pattern_max_len ||
9317                     pat_len < coalesce->pattern_min_len)
9318                         return -EINVAL;
9319
9320                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9321                         pkt_offset = 0;
9322                 else
9323                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9324                 if (pkt_offset > coalesce->max_pkt_offset)
9325                         return -EINVAL;
9326                 new_rule->patterns[i].pkt_offset = pkt_offset;
9327
9328                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9329                 if (!mask_pat)
9330                         return -ENOMEM;
9331
9332                 new_rule->patterns[i].mask = mask_pat;
9333                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9334                        mask_len);
9335
9336                 mask_pat += mask_len;
9337                 new_rule->patterns[i].pattern = mask_pat;
9338                 new_rule->patterns[i].pattern_len = pat_len;
9339                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9340                        pat_len);
9341                 i++;
9342         }
9343
9344         return 0;
9345 }
9346
9347 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9348 {
9349         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9350         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9351         struct cfg80211_coalesce new_coalesce = {};
9352         struct cfg80211_coalesce *n_coalesce;
9353         int err, rem_rule, n_rules = 0, i, j;
9354         struct nlattr *rule;
9355         struct cfg80211_coalesce_rules *tmp_rule;
9356
9357         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9358                 return -EOPNOTSUPP;
9359
9360         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9361                 cfg80211_rdev_free_coalesce(rdev);
9362                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9363                 return 0;
9364         }
9365
9366         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9367                             rem_rule)
9368                 n_rules++;
9369         if (n_rules > coalesce->n_rules)
9370                 return -EINVAL;
9371
9372         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9373                                      GFP_KERNEL);
9374         if (!new_coalesce.rules)
9375                 return -ENOMEM;
9376
9377         new_coalesce.n_rules = n_rules;
9378         i = 0;
9379
9380         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9381                             rem_rule) {
9382                 err = nl80211_parse_coalesce_rule(rdev, rule,
9383                                                   &new_coalesce.rules[i]);
9384                 if (err)
9385                         goto error;
9386
9387                 i++;
9388         }
9389
9390         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9391         if (err)
9392                 goto error;
9393
9394         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9395         if (!n_coalesce) {
9396                 err = -ENOMEM;
9397                 goto error;
9398         }
9399         cfg80211_rdev_free_coalesce(rdev);
9400         rdev->coalesce = n_coalesce;
9401
9402         return 0;
9403 error:
9404         for (i = 0; i < new_coalesce.n_rules; i++) {
9405                 tmp_rule = &new_coalesce.rules[i];
9406                 for (j = 0; j < tmp_rule->n_patterns; j++)
9407                         kfree(tmp_rule->patterns[j].mask);
9408                 kfree(tmp_rule->patterns);
9409         }
9410         kfree(new_coalesce.rules);
9411
9412         return err;
9413 }
9414
9415 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9416 {
9417         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9418         struct net_device *dev = info->user_ptr[1];
9419         struct wireless_dev *wdev = dev->ieee80211_ptr;
9420         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9421         struct cfg80211_gtk_rekey_data rekey_data;
9422         int err;
9423
9424         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9425                 return -EINVAL;
9426
9427         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9428                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9429                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9430                         nl80211_rekey_policy);
9431         if (err)
9432                 return err;
9433
9434         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9435                 return -ERANGE;
9436         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9437                 return -ERANGE;
9438         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9439                 return -ERANGE;
9440
9441         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9442         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9443         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9444
9445         wdev_lock(wdev);
9446         if (!wdev->current_bss) {
9447                 err = -ENOTCONN;
9448                 goto out;
9449         }
9450
9451         if (!rdev->ops->set_rekey_data) {
9452                 err = -EOPNOTSUPP;
9453                 goto out;
9454         }
9455
9456         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9457  out:
9458         wdev_unlock(wdev);
9459         return err;
9460 }
9461
9462 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9463                                              struct genl_info *info)
9464 {
9465         struct net_device *dev = info->user_ptr[1];
9466         struct wireless_dev *wdev = dev->ieee80211_ptr;
9467
9468         if (wdev->iftype != NL80211_IFTYPE_AP &&
9469             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9470                 return -EINVAL;
9471
9472         if (wdev->ap_unexpected_nlportid)
9473                 return -EBUSY;
9474
9475         wdev->ap_unexpected_nlportid = info->snd_portid;
9476         return 0;
9477 }
9478
9479 static int nl80211_probe_client(struct sk_buff *skb,
9480                                 struct genl_info *info)
9481 {
9482         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9483         struct net_device *dev = info->user_ptr[1];
9484         struct wireless_dev *wdev = dev->ieee80211_ptr;
9485         struct sk_buff *msg;
9486         void *hdr;
9487         const u8 *addr;
9488         u64 cookie;
9489         int err;
9490
9491         if (wdev->iftype != NL80211_IFTYPE_AP &&
9492             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9493                 return -EOPNOTSUPP;
9494
9495         if (!info->attrs[NL80211_ATTR_MAC])
9496                 return -EINVAL;
9497
9498         if (!rdev->ops->probe_client)
9499                 return -EOPNOTSUPP;
9500
9501         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9502         if (!msg)
9503                 return -ENOMEM;
9504
9505         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9506                              NL80211_CMD_PROBE_CLIENT);
9507         if (!hdr) {
9508                 err = -ENOBUFS;
9509                 goto free_msg;
9510         }
9511
9512         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9513
9514         err = rdev_probe_client(rdev, dev, addr, &cookie);
9515         if (err)
9516                 goto free_msg;
9517
9518         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9519                 goto nla_put_failure;
9520
9521         genlmsg_end(msg, hdr);
9522
9523         return genlmsg_reply(msg, info);
9524
9525  nla_put_failure:
9526         err = -ENOBUFS;
9527  free_msg:
9528         nlmsg_free(msg);
9529         return err;
9530 }
9531
9532 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9533 {
9534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9535         struct cfg80211_beacon_registration *reg, *nreg;
9536         int rv;
9537
9538         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9539                 return -EOPNOTSUPP;
9540
9541         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9542         if (!nreg)
9543                 return -ENOMEM;
9544
9545         /* First, check if already registered. */
9546         spin_lock_bh(&rdev->beacon_registrations_lock);
9547         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9548                 if (reg->nlportid == info->snd_portid) {
9549                         rv = -EALREADY;
9550                         goto out_err;
9551                 }
9552         }
9553         /* Add it to the list */
9554         nreg->nlportid = info->snd_portid;
9555         list_add(&nreg->list, &rdev->beacon_registrations);
9556
9557         spin_unlock_bh(&rdev->beacon_registrations_lock);
9558
9559         return 0;
9560 out_err:
9561         spin_unlock_bh(&rdev->beacon_registrations_lock);
9562         kfree(nreg);
9563         return rv;
9564 }
9565
9566 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9567 {
9568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9569         struct wireless_dev *wdev = info->user_ptr[1];
9570         int err;
9571
9572         if (!rdev->ops->start_p2p_device)
9573                 return -EOPNOTSUPP;
9574
9575         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9576                 return -EOPNOTSUPP;
9577
9578         if (wdev->p2p_started)
9579                 return 0;
9580
9581         if (rfkill_blocked(rdev->rfkill))
9582                 return -ERFKILL;
9583
9584         err = rdev_start_p2p_device(rdev, wdev);
9585         if (err)
9586                 return err;
9587
9588         wdev->p2p_started = true;
9589         rdev->opencount++;
9590
9591         return 0;
9592 }
9593
9594 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9595 {
9596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9597         struct wireless_dev *wdev = info->user_ptr[1];
9598
9599         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9600                 return -EOPNOTSUPP;
9601
9602         if (!rdev->ops->stop_p2p_device)
9603                 return -EOPNOTSUPP;
9604
9605         cfg80211_stop_p2p_device(rdev, wdev);
9606
9607         return 0;
9608 }
9609
9610 static int nl80211_get_protocol_features(struct sk_buff *skb,
9611                                          struct genl_info *info)
9612 {
9613         void *hdr;
9614         struct sk_buff *msg;
9615
9616         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9617         if (!msg)
9618                 return -ENOMEM;
9619
9620         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9621                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9622         if (!hdr)
9623                 goto nla_put_failure;
9624
9625         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9626                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9627                 goto nla_put_failure;
9628
9629         genlmsg_end(msg, hdr);
9630         return genlmsg_reply(msg, info);
9631
9632  nla_put_failure:
9633         kfree_skb(msg);
9634         return -ENOBUFS;
9635 }
9636
9637 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9638 {
9639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9640         struct cfg80211_update_ft_ies_params ft_params;
9641         struct net_device *dev = info->user_ptr[1];
9642
9643         if (!rdev->ops->update_ft_ies)
9644                 return -EOPNOTSUPP;
9645
9646         if (!info->attrs[NL80211_ATTR_MDID] ||
9647             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9648                 return -EINVAL;
9649
9650         memset(&ft_params, 0, sizeof(ft_params));
9651         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9652         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9653         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9654
9655         return rdev_update_ft_ies(rdev, dev, &ft_params);
9656 }
9657
9658 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9659                                        struct genl_info *info)
9660 {
9661         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9662         struct wireless_dev *wdev = info->user_ptr[1];
9663         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9664         u16 duration;
9665         int ret;
9666
9667         if (!rdev->ops->crit_proto_start)
9668                 return -EOPNOTSUPP;
9669
9670         if (WARN_ON(!rdev->ops->crit_proto_stop))
9671                 return -EINVAL;
9672
9673         if (rdev->crit_proto_nlportid)
9674                 return -EBUSY;
9675
9676         /* determine protocol if provided */
9677         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9678                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9679
9680         if (proto >= NUM_NL80211_CRIT_PROTO)
9681                 return -EINVAL;
9682
9683         /* timeout must be provided */
9684         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9685                 return -EINVAL;
9686
9687         duration =
9688                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9689
9690         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9691                 return -ERANGE;
9692
9693         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9694         if (!ret)
9695                 rdev->crit_proto_nlportid = info->snd_portid;
9696
9697         return ret;
9698 }
9699
9700 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9701                                       struct genl_info *info)
9702 {
9703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9704         struct wireless_dev *wdev = info->user_ptr[1];
9705
9706         if (!rdev->ops->crit_proto_stop)
9707                 return -EOPNOTSUPP;
9708
9709         if (rdev->crit_proto_nlportid) {
9710                 rdev->crit_proto_nlportid = 0;
9711                 rdev_crit_proto_stop(rdev, wdev);
9712         }
9713         return 0;
9714 }
9715
9716 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9717 {
9718         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9719         struct wireless_dev *wdev =
9720                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9721         int i, err;
9722         u32 vid, subcmd;
9723
9724         if (!rdev->wiphy.vendor_commands)
9725                 return -EOPNOTSUPP;
9726
9727         if (IS_ERR(wdev)) {
9728                 err = PTR_ERR(wdev);
9729                 if (err != -EINVAL)
9730                         return err;
9731                 wdev = NULL;
9732         } else if (wdev->wiphy != &rdev->wiphy) {
9733                 return -EINVAL;
9734         }
9735
9736         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9737             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9738                 return -EINVAL;
9739
9740         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9741         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9742         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9743                 const struct wiphy_vendor_command *vcmd;
9744                 void *data = NULL;
9745                 int len = 0;
9746
9747                 vcmd = &rdev->wiphy.vendor_commands[i];
9748
9749                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9750                         continue;
9751
9752                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9753                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9754                         if (!wdev)
9755                                 return -EINVAL;
9756                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9757                             !wdev->netdev)
9758                                 return -EINVAL;
9759
9760                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9761                                 if (wdev->netdev &&
9762                                     !netif_running(wdev->netdev))
9763                                         return -ENETDOWN;
9764                                 if (!wdev->netdev && !wdev->p2p_started)
9765                                         return -ENETDOWN;
9766                         }
9767                 } else {
9768                         wdev = NULL;
9769                 }
9770
9771                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9772                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9773                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9774                 }
9775
9776                 rdev->cur_cmd_info = info;
9777                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9778                                                           data, len);
9779                 rdev->cur_cmd_info = NULL;
9780                 return err;
9781         }
9782
9783         return -EOPNOTSUPP;
9784 }
9785
9786 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9787                                            enum nl80211_commands cmd,
9788                                            enum nl80211_attrs attr,
9789                                            int approxlen)
9790 {
9791         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9792
9793         if (WARN_ON(!rdev->cur_cmd_info))
9794                 return NULL;
9795
9796         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9797                                            rdev->cur_cmd_info->snd_portid,
9798                                            rdev->cur_cmd_info->snd_seq,
9799                                            cmd, attr, NULL, GFP_KERNEL);
9800 }
9801 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9802
9803 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9804 {
9805         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9806         void *hdr = ((void **)skb->cb)[1];
9807         struct nlattr *data = ((void **)skb->cb)[2];
9808
9809         /* clear CB data for netlink core to own from now on */
9810         memset(skb->cb, 0, sizeof(skb->cb));
9811
9812         if (WARN_ON(!rdev->cur_cmd_info)) {
9813                 kfree_skb(skb);
9814                 return -EINVAL;
9815         }
9816
9817         nla_nest_end(skb, data);
9818         genlmsg_end(skb, hdr);
9819         return genlmsg_reply(skb, rdev->cur_cmd_info);
9820 }
9821 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9822
9823
9824 static int nl80211_set_qos_map(struct sk_buff *skb,
9825                                struct genl_info *info)
9826 {
9827         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9828         struct cfg80211_qos_map *qos_map = NULL;
9829         struct net_device *dev = info->user_ptr[1];
9830         u8 *pos, len, num_des, des_len, des;
9831         int ret;
9832
9833         if (!rdev->ops->set_qos_map)
9834                 return -EOPNOTSUPP;
9835
9836         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9837                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9838                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9839
9840                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9841                     len > IEEE80211_QOS_MAP_LEN_MAX)
9842                         return -EINVAL;
9843
9844                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9845                 if (!qos_map)
9846                         return -ENOMEM;
9847
9848                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9849                 if (num_des) {
9850                         des_len = num_des *
9851                                 sizeof(struct cfg80211_dscp_exception);
9852                         memcpy(qos_map->dscp_exception, pos, des_len);
9853                         qos_map->num_des = num_des;
9854                         for (des = 0; des < num_des; des++) {
9855                                 if (qos_map->dscp_exception[des].up > 7) {
9856                                         kfree(qos_map);
9857                                         return -EINVAL;
9858                                 }
9859                         }
9860                         pos += des_len;
9861                 }
9862                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9863         }
9864
9865         wdev_lock(dev->ieee80211_ptr);
9866         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9867         if (!ret)
9868                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9869         wdev_unlock(dev->ieee80211_ptr);
9870
9871         kfree(qos_map);
9872         return ret;
9873 }
9874
9875 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9876 {
9877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9878         struct net_device *dev = info->user_ptr[1];
9879         struct wireless_dev *wdev = dev->ieee80211_ptr;
9880         const u8 *peer;
9881         u8 tsid, up;
9882         u16 admitted_time = 0;
9883         int err;
9884
9885         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9886                 return -EOPNOTSUPP;
9887
9888         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9889             !info->attrs[NL80211_ATTR_USER_PRIO])
9890                 return -EINVAL;
9891
9892         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9893         if (tsid >= IEEE80211_NUM_TIDS)
9894                 return -EINVAL;
9895
9896         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9897         if (up >= IEEE80211_NUM_UPS)
9898                 return -EINVAL;
9899
9900         /* WMM uses TIDs 0-7 even for TSPEC */
9901         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9902                 /* TODO: handle 802.11 TSPEC/admission control
9903                  * need more attributes for that (e.g. BA session requirement);
9904                  * change the WMM adminssion test above to allow both then
9905                  */
9906                 return -EINVAL;
9907         }
9908
9909         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9910
9911         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9912                 admitted_time =
9913                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9914                 if (!admitted_time)
9915                         return -EINVAL;
9916         }
9917
9918         wdev_lock(wdev);
9919         switch (wdev->iftype) {
9920         case NL80211_IFTYPE_STATION:
9921         case NL80211_IFTYPE_P2P_CLIENT:
9922                 if (wdev->current_bss)
9923                         break;
9924                 err = -ENOTCONN;
9925                 goto out;
9926         default:
9927                 err = -EOPNOTSUPP;
9928                 goto out;
9929         }
9930
9931         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9932
9933  out:
9934         wdev_unlock(wdev);
9935         return err;
9936 }
9937
9938 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9939 {
9940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9941         struct net_device *dev = info->user_ptr[1];
9942         struct wireless_dev *wdev = dev->ieee80211_ptr;
9943         const u8 *peer;
9944         u8 tsid;
9945         int err;
9946
9947         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9948                 return -EINVAL;
9949
9950         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9951         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9952
9953         wdev_lock(wdev);
9954         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9955         wdev_unlock(wdev);
9956
9957         return err;
9958 }
9959
9960 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9961                                        struct genl_info *info)
9962 {
9963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9964         struct net_device *dev = info->user_ptr[1];
9965         struct wireless_dev *wdev = dev->ieee80211_ptr;
9966         struct cfg80211_chan_def chandef = {};
9967         const u8 *addr;
9968         u8 oper_class;
9969         int err;
9970
9971         if (!rdev->ops->tdls_channel_switch ||
9972             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9973                 return -EOPNOTSUPP;
9974
9975         switch (dev->ieee80211_ptr->iftype) {
9976         case NL80211_IFTYPE_STATION:
9977         case NL80211_IFTYPE_P2P_CLIENT:
9978                 break;
9979         default:
9980                 return -EOPNOTSUPP;
9981         }
9982
9983         if (!info->attrs[NL80211_ATTR_MAC] ||
9984             !info->attrs[NL80211_ATTR_OPER_CLASS])
9985                 return -EINVAL;
9986
9987         err = nl80211_parse_chandef(rdev, info, &chandef);
9988         if (err)
9989                 return err;
9990
9991         /*
9992          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
9993          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
9994          * specification is not defined for them.
9995          */
9996         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
9997             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
9998             chandef.width != NL80211_CHAN_WIDTH_20)
9999                 return -EINVAL;
10000
10001         /* we will be active on the TDLS link */
10002         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10003                 return -EINVAL;
10004
10005         /* don't allow switching to DFS channels */
10006         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10007                 return -EINVAL;
10008
10009         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10010         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10011
10012         wdev_lock(wdev);
10013         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10014         wdev_unlock(wdev);
10015
10016         return err;
10017 }
10018
10019 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10020                                               struct genl_info *info)
10021 {
10022         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10023         struct net_device *dev = info->user_ptr[1];
10024         struct wireless_dev *wdev = dev->ieee80211_ptr;
10025         const u8 *addr;
10026
10027         if (!rdev->ops->tdls_channel_switch ||
10028             !rdev->ops->tdls_cancel_channel_switch ||
10029             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10030                 return -EOPNOTSUPP;
10031
10032         switch (dev->ieee80211_ptr->iftype) {
10033         case NL80211_IFTYPE_STATION:
10034         case NL80211_IFTYPE_P2P_CLIENT:
10035                 break;
10036         default:
10037                 return -EOPNOTSUPP;
10038         }
10039
10040         if (!info->attrs[NL80211_ATTR_MAC])
10041                 return -EINVAL;
10042
10043         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10044
10045         wdev_lock(wdev);
10046         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10047         wdev_unlock(wdev);
10048
10049         return 0;
10050 }
10051
10052 #define NL80211_FLAG_NEED_WIPHY         0x01
10053 #define NL80211_FLAG_NEED_NETDEV        0x02
10054 #define NL80211_FLAG_NEED_RTNL          0x04
10055 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10056 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10057                                          NL80211_FLAG_CHECK_NETDEV_UP)
10058 #define NL80211_FLAG_NEED_WDEV          0x10
10059 /* If a netdev is associated, it must be UP, P2P must be started */
10060 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10061                                          NL80211_FLAG_CHECK_NETDEV_UP)
10062 #define NL80211_FLAG_CLEAR_SKB          0x20
10063
10064 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10065                             struct genl_info *info)
10066 {
10067         struct cfg80211_registered_device *rdev;
10068         struct wireless_dev *wdev;
10069         struct net_device *dev;
10070         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10071
10072         if (rtnl)
10073                 rtnl_lock();
10074
10075         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10076                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10077                 if (IS_ERR(rdev)) {
10078                         if (rtnl)
10079                                 rtnl_unlock();
10080                         return PTR_ERR(rdev);
10081                 }
10082                 info->user_ptr[0] = rdev;
10083         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10084                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10085                 ASSERT_RTNL();
10086
10087                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10088                                                   info->attrs);
10089                 if (IS_ERR(wdev)) {
10090                         if (rtnl)
10091                                 rtnl_unlock();
10092                         return PTR_ERR(wdev);
10093                 }
10094
10095                 dev = wdev->netdev;
10096                 rdev = wiphy_to_rdev(wdev->wiphy);
10097
10098                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10099                         if (!dev) {
10100                                 if (rtnl)
10101                                         rtnl_unlock();
10102                                 return -EINVAL;
10103                         }
10104
10105                         info->user_ptr[1] = dev;
10106                 } else {
10107                         info->user_ptr[1] = wdev;
10108                 }
10109
10110                 if (dev) {
10111                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10112                             !netif_running(dev)) {
10113                                 if (rtnl)
10114                                         rtnl_unlock();
10115                                 return -ENETDOWN;
10116                         }
10117
10118                         dev_hold(dev);
10119                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10120                         if (!wdev->p2p_started) {
10121                                 if (rtnl)
10122                                         rtnl_unlock();
10123                                 return -ENETDOWN;
10124                         }
10125                 }
10126
10127                 info->user_ptr[0] = rdev;
10128         }
10129
10130         return 0;
10131 }
10132
10133 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10134                               struct genl_info *info)
10135 {
10136         if (info->user_ptr[1]) {
10137                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10138                         struct wireless_dev *wdev = info->user_ptr[1];
10139
10140                         if (wdev->netdev)
10141                                 dev_put(wdev->netdev);
10142                 } else {
10143                         dev_put(info->user_ptr[1]);
10144                 }
10145         }
10146
10147         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10148                 rtnl_unlock();
10149
10150         /* If needed, clear the netlink message payload from the SKB
10151          * as it might contain key data that shouldn't stick around on
10152          * the heap after the SKB is freed. The netlink message header
10153          * is still needed for further processing, so leave it intact.
10154          */
10155         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10156                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10157
10158                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10159         }
10160 }
10161
10162 static const struct genl_ops nl80211_ops[] = {
10163         {
10164                 .cmd = NL80211_CMD_GET_WIPHY,
10165                 .doit = nl80211_get_wiphy,
10166                 .dumpit = nl80211_dump_wiphy,
10167                 .done = nl80211_dump_wiphy_done,
10168                 .policy = nl80211_policy,
10169                 /* can be retrieved by unprivileged users */
10170                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10171                                   NL80211_FLAG_NEED_RTNL,
10172         },
10173         {
10174                 .cmd = NL80211_CMD_SET_WIPHY,
10175                 .doit = nl80211_set_wiphy,
10176                 .policy = nl80211_policy,
10177                 .flags = GENL_ADMIN_PERM,
10178                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10179         },
10180         {
10181                 .cmd = NL80211_CMD_GET_INTERFACE,
10182                 .doit = nl80211_get_interface,
10183                 .dumpit = nl80211_dump_interface,
10184                 .policy = nl80211_policy,
10185                 /* can be retrieved by unprivileged users */
10186                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10187                                   NL80211_FLAG_NEED_RTNL,
10188         },
10189         {
10190                 .cmd = NL80211_CMD_SET_INTERFACE,
10191                 .doit = nl80211_set_interface,
10192                 .policy = nl80211_policy,
10193                 .flags = GENL_ADMIN_PERM,
10194                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10195                                   NL80211_FLAG_NEED_RTNL,
10196         },
10197         {
10198                 .cmd = NL80211_CMD_NEW_INTERFACE,
10199                 .doit = nl80211_new_interface,
10200                 .policy = nl80211_policy,
10201                 .flags = GENL_ADMIN_PERM,
10202                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10203                                   NL80211_FLAG_NEED_RTNL,
10204         },
10205         {
10206                 .cmd = NL80211_CMD_DEL_INTERFACE,
10207                 .doit = nl80211_del_interface,
10208                 .policy = nl80211_policy,
10209                 .flags = GENL_ADMIN_PERM,
10210                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10211                                   NL80211_FLAG_NEED_RTNL,
10212         },
10213         {
10214                 .cmd = NL80211_CMD_GET_KEY,
10215                 .doit = nl80211_get_key,
10216                 .policy = nl80211_policy,
10217                 .flags = GENL_ADMIN_PERM,
10218                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10219                                   NL80211_FLAG_NEED_RTNL,
10220         },
10221         {
10222                 .cmd = NL80211_CMD_SET_KEY,
10223                 .doit = nl80211_set_key,
10224                 .policy = nl80211_policy,
10225                 .flags = GENL_ADMIN_PERM,
10226                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10227                                   NL80211_FLAG_NEED_RTNL |
10228                                   NL80211_FLAG_CLEAR_SKB,
10229         },
10230         {
10231                 .cmd = NL80211_CMD_NEW_KEY,
10232                 .doit = nl80211_new_key,
10233                 .policy = nl80211_policy,
10234                 .flags = GENL_ADMIN_PERM,
10235                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10236                                   NL80211_FLAG_NEED_RTNL |
10237                                   NL80211_FLAG_CLEAR_SKB,
10238         },
10239         {
10240                 .cmd = NL80211_CMD_DEL_KEY,
10241                 .doit = nl80211_del_key,
10242                 .policy = nl80211_policy,
10243                 .flags = GENL_ADMIN_PERM,
10244                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10245                                   NL80211_FLAG_NEED_RTNL,
10246         },
10247         {
10248                 .cmd = NL80211_CMD_SET_BEACON,
10249                 .policy = nl80211_policy,
10250                 .flags = GENL_ADMIN_PERM,
10251                 .doit = nl80211_set_beacon,
10252                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10253                                   NL80211_FLAG_NEED_RTNL,
10254         },
10255         {
10256                 .cmd = NL80211_CMD_START_AP,
10257                 .policy = nl80211_policy,
10258                 .flags = GENL_ADMIN_PERM,
10259                 .doit = nl80211_start_ap,
10260                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10261                                   NL80211_FLAG_NEED_RTNL,
10262         },
10263         {
10264                 .cmd = NL80211_CMD_STOP_AP,
10265                 .policy = nl80211_policy,
10266                 .flags = GENL_ADMIN_PERM,
10267                 .doit = nl80211_stop_ap,
10268                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10269                                   NL80211_FLAG_NEED_RTNL,
10270         },
10271         {
10272                 .cmd = NL80211_CMD_GET_STATION,
10273                 .doit = nl80211_get_station,
10274                 .dumpit = nl80211_dump_station,
10275                 .policy = nl80211_policy,
10276                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10277                                   NL80211_FLAG_NEED_RTNL,
10278         },
10279         {
10280                 .cmd = NL80211_CMD_SET_STATION,
10281                 .doit = nl80211_set_station,
10282                 .policy = nl80211_policy,
10283                 .flags = GENL_ADMIN_PERM,
10284                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10285                                   NL80211_FLAG_NEED_RTNL,
10286         },
10287         {
10288                 .cmd = NL80211_CMD_NEW_STATION,
10289                 .doit = nl80211_new_station,
10290                 .policy = nl80211_policy,
10291                 .flags = GENL_ADMIN_PERM,
10292                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10293                                   NL80211_FLAG_NEED_RTNL,
10294         },
10295         {
10296                 .cmd = NL80211_CMD_DEL_STATION,
10297                 .doit = nl80211_del_station,
10298                 .policy = nl80211_policy,
10299                 .flags = GENL_ADMIN_PERM,
10300                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10301                                   NL80211_FLAG_NEED_RTNL,
10302         },
10303         {
10304                 .cmd = NL80211_CMD_GET_MPATH,
10305                 .doit = nl80211_get_mpath,
10306                 .dumpit = nl80211_dump_mpath,
10307                 .policy = nl80211_policy,
10308                 .flags = GENL_ADMIN_PERM,
10309                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10310                                   NL80211_FLAG_NEED_RTNL,
10311         },
10312         {
10313                 .cmd = NL80211_CMD_GET_MPP,
10314                 .doit = nl80211_get_mpp,
10315                 .dumpit = nl80211_dump_mpp,
10316                 .policy = nl80211_policy,
10317                 .flags = GENL_ADMIN_PERM,
10318                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10319                                   NL80211_FLAG_NEED_RTNL,
10320         },
10321         {
10322                 .cmd = NL80211_CMD_SET_MPATH,
10323                 .doit = nl80211_set_mpath,
10324                 .policy = nl80211_policy,
10325                 .flags = GENL_ADMIN_PERM,
10326                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10327                                   NL80211_FLAG_NEED_RTNL,
10328         },
10329         {
10330                 .cmd = NL80211_CMD_NEW_MPATH,
10331                 .doit = nl80211_new_mpath,
10332                 .policy = nl80211_policy,
10333                 .flags = GENL_ADMIN_PERM,
10334                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10335                                   NL80211_FLAG_NEED_RTNL,
10336         },
10337         {
10338                 .cmd = NL80211_CMD_DEL_MPATH,
10339                 .doit = nl80211_del_mpath,
10340                 .policy = nl80211_policy,
10341                 .flags = GENL_ADMIN_PERM,
10342                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10343                                   NL80211_FLAG_NEED_RTNL,
10344         },
10345         {
10346                 .cmd = NL80211_CMD_SET_BSS,
10347                 .doit = nl80211_set_bss,
10348                 .policy = nl80211_policy,
10349                 .flags = GENL_ADMIN_PERM,
10350                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10351                                   NL80211_FLAG_NEED_RTNL,
10352         },
10353         {
10354                 .cmd = NL80211_CMD_GET_REG,
10355                 .doit = nl80211_get_reg_do,
10356                 .dumpit = nl80211_get_reg_dump,
10357                 .policy = nl80211_policy,
10358                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10359                 /* can be retrieved by unprivileged users */
10360         },
10361         {
10362                 .cmd = NL80211_CMD_SET_REG,
10363                 .doit = nl80211_set_reg,
10364                 .policy = nl80211_policy,
10365                 .flags = GENL_ADMIN_PERM,
10366                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10367         },
10368         {
10369                 .cmd = NL80211_CMD_REQ_SET_REG,
10370                 .doit = nl80211_req_set_reg,
10371                 .policy = nl80211_policy,
10372                 .flags = GENL_ADMIN_PERM,
10373         },
10374         {
10375                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10376                 .doit = nl80211_get_mesh_config,
10377                 .policy = nl80211_policy,
10378                 /* can be retrieved by unprivileged users */
10379                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10380                                   NL80211_FLAG_NEED_RTNL,
10381         },
10382         {
10383                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10384                 .doit = nl80211_update_mesh_config,
10385                 .policy = nl80211_policy,
10386                 .flags = GENL_ADMIN_PERM,
10387                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10388                                   NL80211_FLAG_NEED_RTNL,
10389         },
10390         {
10391                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10392                 .doit = nl80211_trigger_scan,
10393                 .policy = nl80211_policy,
10394                 .flags = GENL_ADMIN_PERM,
10395                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10396                                   NL80211_FLAG_NEED_RTNL,
10397         },
10398         {
10399                 .cmd = NL80211_CMD_GET_SCAN,
10400                 .policy = nl80211_policy,
10401                 .dumpit = nl80211_dump_scan,
10402         },
10403         {
10404                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10405                 .doit = nl80211_start_sched_scan,
10406                 .policy = nl80211_policy,
10407                 .flags = GENL_ADMIN_PERM,
10408                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10409                                   NL80211_FLAG_NEED_RTNL,
10410         },
10411         {
10412                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10413                 .doit = nl80211_stop_sched_scan,
10414                 .policy = nl80211_policy,
10415                 .flags = GENL_ADMIN_PERM,
10416                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10417                                   NL80211_FLAG_NEED_RTNL,
10418         },
10419         {
10420                 .cmd = NL80211_CMD_AUTHENTICATE,
10421                 .doit = nl80211_authenticate,
10422                 .policy = nl80211_policy,
10423                 .flags = GENL_ADMIN_PERM,
10424                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10425                                   NL80211_FLAG_NEED_RTNL |
10426                                   NL80211_FLAG_CLEAR_SKB,
10427         },
10428         {
10429                 .cmd = NL80211_CMD_ASSOCIATE,
10430                 .doit = nl80211_associate,
10431                 .policy = nl80211_policy,
10432                 .flags = GENL_ADMIN_PERM,
10433                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10434                                   NL80211_FLAG_NEED_RTNL,
10435         },
10436         {
10437                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10438                 .doit = nl80211_deauthenticate,
10439                 .policy = nl80211_policy,
10440                 .flags = GENL_ADMIN_PERM,
10441                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10442                                   NL80211_FLAG_NEED_RTNL,
10443         },
10444         {
10445                 .cmd = NL80211_CMD_DISASSOCIATE,
10446                 .doit = nl80211_disassociate,
10447                 .policy = nl80211_policy,
10448                 .flags = GENL_ADMIN_PERM,
10449                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10450                                   NL80211_FLAG_NEED_RTNL,
10451         },
10452         {
10453                 .cmd = NL80211_CMD_JOIN_IBSS,
10454                 .doit = nl80211_join_ibss,
10455                 .policy = nl80211_policy,
10456                 .flags = GENL_ADMIN_PERM,
10457                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10458                                   NL80211_FLAG_NEED_RTNL,
10459         },
10460         {
10461                 .cmd = NL80211_CMD_LEAVE_IBSS,
10462                 .doit = nl80211_leave_ibss,
10463                 .policy = nl80211_policy,
10464                 .flags = GENL_ADMIN_PERM,
10465                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10466                                   NL80211_FLAG_NEED_RTNL,
10467         },
10468 #ifdef CONFIG_NL80211_TESTMODE
10469         {
10470                 .cmd = NL80211_CMD_TESTMODE,
10471                 .doit = nl80211_testmode_do,
10472                 .dumpit = nl80211_testmode_dump,
10473                 .policy = nl80211_policy,
10474                 .flags = GENL_ADMIN_PERM,
10475                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10476                                   NL80211_FLAG_NEED_RTNL,
10477         },
10478 #endif
10479         {
10480                 .cmd = NL80211_CMD_CONNECT,
10481                 .doit = nl80211_connect,
10482                 .policy = nl80211_policy,
10483                 .flags = GENL_ADMIN_PERM,
10484                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10485                                   NL80211_FLAG_NEED_RTNL,
10486         },
10487         {
10488                 .cmd = NL80211_CMD_DISCONNECT,
10489                 .doit = nl80211_disconnect,
10490                 .policy = nl80211_policy,
10491                 .flags = GENL_ADMIN_PERM,
10492                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10493                                   NL80211_FLAG_NEED_RTNL,
10494         },
10495         {
10496                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10497                 .doit = nl80211_wiphy_netns,
10498                 .policy = nl80211_policy,
10499                 .flags = GENL_ADMIN_PERM,
10500                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10501                                   NL80211_FLAG_NEED_RTNL,
10502         },
10503         {
10504                 .cmd = NL80211_CMD_GET_SURVEY,
10505                 .policy = nl80211_policy,
10506                 .dumpit = nl80211_dump_survey,
10507         },
10508         {
10509                 .cmd = NL80211_CMD_SET_PMKSA,
10510                 .doit = nl80211_setdel_pmksa,
10511                 .policy = nl80211_policy,
10512                 .flags = GENL_ADMIN_PERM,
10513                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10514                                   NL80211_FLAG_NEED_RTNL,
10515         },
10516         {
10517                 .cmd = NL80211_CMD_DEL_PMKSA,
10518                 .doit = nl80211_setdel_pmksa,
10519                 .policy = nl80211_policy,
10520                 .flags = GENL_ADMIN_PERM,
10521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10522                                   NL80211_FLAG_NEED_RTNL,
10523         },
10524         {
10525                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10526                 .doit = nl80211_flush_pmksa,
10527                 .policy = nl80211_policy,
10528                 .flags = GENL_ADMIN_PERM,
10529                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10530                                   NL80211_FLAG_NEED_RTNL,
10531         },
10532         {
10533                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10534                 .doit = nl80211_remain_on_channel,
10535                 .policy = nl80211_policy,
10536                 .flags = GENL_ADMIN_PERM,
10537                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10538                                   NL80211_FLAG_NEED_RTNL,
10539         },
10540         {
10541                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10542                 .doit = nl80211_cancel_remain_on_channel,
10543                 .policy = nl80211_policy,
10544                 .flags = GENL_ADMIN_PERM,
10545                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10546                                   NL80211_FLAG_NEED_RTNL,
10547         },
10548         {
10549                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10550                 .doit = nl80211_set_tx_bitrate_mask,
10551                 .policy = nl80211_policy,
10552                 .flags = GENL_ADMIN_PERM,
10553                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10554                                   NL80211_FLAG_NEED_RTNL,
10555         },
10556         {
10557                 .cmd = NL80211_CMD_REGISTER_FRAME,
10558                 .doit = nl80211_register_mgmt,
10559                 .policy = nl80211_policy,
10560                 .flags = GENL_ADMIN_PERM,
10561                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10562                                   NL80211_FLAG_NEED_RTNL,
10563         },
10564         {
10565                 .cmd = NL80211_CMD_FRAME,
10566                 .doit = nl80211_tx_mgmt,
10567                 .policy = nl80211_policy,
10568                 .flags = GENL_ADMIN_PERM,
10569                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10570                                   NL80211_FLAG_NEED_RTNL,
10571         },
10572         {
10573                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10574                 .doit = nl80211_tx_mgmt_cancel_wait,
10575                 .policy = nl80211_policy,
10576                 .flags = GENL_ADMIN_PERM,
10577                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10578                                   NL80211_FLAG_NEED_RTNL,
10579         },
10580         {
10581                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10582                 .doit = nl80211_set_power_save,
10583                 .policy = nl80211_policy,
10584                 .flags = GENL_ADMIN_PERM,
10585                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10586                                   NL80211_FLAG_NEED_RTNL,
10587         },
10588         {
10589                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10590                 .doit = nl80211_get_power_save,
10591                 .policy = nl80211_policy,
10592                 /* can be retrieved by unprivileged users */
10593                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10594                                   NL80211_FLAG_NEED_RTNL,
10595         },
10596         {
10597                 .cmd = NL80211_CMD_SET_CQM,
10598                 .doit = nl80211_set_cqm,
10599                 .policy = nl80211_policy,
10600                 .flags = GENL_ADMIN_PERM,
10601                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10602                                   NL80211_FLAG_NEED_RTNL,
10603         },
10604         {
10605                 .cmd = NL80211_CMD_SET_CHANNEL,
10606                 .doit = nl80211_set_channel,
10607                 .policy = nl80211_policy,
10608                 .flags = GENL_ADMIN_PERM,
10609                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10610                                   NL80211_FLAG_NEED_RTNL,
10611         },
10612         {
10613                 .cmd = NL80211_CMD_SET_WDS_PEER,
10614                 .doit = nl80211_set_wds_peer,
10615                 .policy = nl80211_policy,
10616                 .flags = GENL_ADMIN_PERM,
10617                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10618                                   NL80211_FLAG_NEED_RTNL,
10619         },
10620         {
10621                 .cmd = NL80211_CMD_JOIN_MESH,
10622                 .doit = nl80211_join_mesh,
10623                 .policy = nl80211_policy,
10624                 .flags = GENL_ADMIN_PERM,
10625                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10626                                   NL80211_FLAG_NEED_RTNL,
10627         },
10628         {
10629                 .cmd = NL80211_CMD_LEAVE_MESH,
10630                 .doit = nl80211_leave_mesh,
10631                 .policy = nl80211_policy,
10632                 .flags = GENL_ADMIN_PERM,
10633                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10634                                   NL80211_FLAG_NEED_RTNL,
10635         },
10636         {
10637                 .cmd = NL80211_CMD_JOIN_OCB,
10638                 .doit = nl80211_join_ocb,
10639                 .policy = nl80211_policy,
10640                 .flags = GENL_ADMIN_PERM,
10641                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10642                                   NL80211_FLAG_NEED_RTNL,
10643         },
10644         {
10645                 .cmd = NL80211_CMD_LEAVE_OCB,
10646                 .doit = nl80211_leave_ocb,
10647                 .policy = nl80211_policy,
10648                 .flags = GENL_ADMIN_PERM,
10649                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10650                                   NL80211_FLAG_NEED_RTNL,
10651         },
10652 #ifdef CONFIG_PM
10653         {
10654                 .cmd = NL80211_CMD_GET_WOWLAN,
10655                 .doit = nl80211_get_wowlan,
10656                 .policy = nl80211_policy,
10657                 /* can be retrieved by unprivileged users */
10658                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10659                                   NL80211_FLAG_NEED_RTNL,
10660         },
10661         {
10662                 .cmd = NL80211_CMD_SET_WOWLAN,
10663                 .doit = nl80211_set_wowlan,
10664                 .policy = nl80211_policy,
10665                 .flags = GENL_ADMIN_PERM,
10666                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10667                                   NL80211_FLAG_NEED_RTNL,
10668         },
10669 #endif
10670         {
10671                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10672                 .doit = nl80211_set_rekey_data,
10673                 .policy = nl80211_policy,
10674                 .flags = GENL_ADMIN_PERM,
10675                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10676                                   NL80211_FLAG_NEED_RTNL |
10677                                   NL80211_FLAG_CLEAR_SKB,
10678         },
10679         {
10680                 .cmd = NL80211_CMD_TDLS_MGMT,
10681                 .doit = nl80211_tdls_mgmt,
10682                 .policy = nl80211_policy,
10683                 .flags = GENL_ADMIN_PERM,
10684                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10685                                   NL80211_FLAG_NEED_RTNL,
10686         },
10687         {
10688                 .cmd = NL80211_CMD_TDLS_OPER,
10689                 .doit = nl80211_tdls_oper,
10690                 .policy = nl80211_policy,
10691                 .flags = GENL_ADMIN_PERM,
10692                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10693                                   NL80211_FLAG_NEED_RTNL,
10694         },
10695         {
10696                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10697                 .doit = nl80211_register_unexpected_frame,
10698                 .policy = nl80211_policy,
10699                 .flags = GENL_ADMIN_PERM,
10700                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10701                                   NL80211_FLAG_NEED_RTNL,
10702         },
10703         {
10704                 .cmd = NL80211_CMD_PROBE_CLIENT,
10705                 .doit = nl80211_probe_client,
10706                 .policy = nl80211_policy,
10707                 .flags = GENL_ADMIN_PERM,
10708                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10709                                   NL80211_FLAG_NEED_RTNL,
10710         },
10711         {
10712                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10713                 .doit = nl80211_register_beacons,
10714                 .policy = nl80211_policy,
10715                 .flags = GENL_ADMIN_PERM,
10716                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10717                                   NL80211_FLAG_NEED_RTNL,
10718         },
10719         {
10720                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10721                 .doit = nl80211_set_noack_map,
10722                 .policy = nl80211_policy,
10723                 .flags = GENL_ADMIN_PERM,
10724                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10725                                   NL80211_FLAG_NEED_RTNL,
10726         },
10727         {
10728                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10729                 .doit = nl80211_start_p2p_device,
10730                 .policy = nl80211_policy,
10731                 .flags = GENL_ADMIN_PERM,
10732                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10733                                   NL80211_FLAG_NEED_RTNL,
10734         },
10735         {
10736                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10737                 .doit = nl80211_stop_p2p_device,
10738                 .policy = nl80211_policy,
10739                 .flags = GENL_ADMIN_PERM,
10740                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10741                                   NL80211_FLAG_NEED_RTNL,
10742         },
10743         {
10744                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10745                 .doit = nl80211_set_mcast_rate,
10746                 .policy = nl80211_policy,
10747                 .flags = GENL_ADMIN_PERM,
10748                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10749                                   NL80211_FLAG_NEED_RTNL,
10750         },
10751         {
10752                 .cmd = NL80211_CMD_SET_MAC_ACL,
10753                 .doit = nl80211_set_mac_acl,
10754                 .policy = nl80211_policy,
10755                 .flags = GENL_ADMIN_PERM,
10756                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10757                                   NL80211_FLAG_NEED_RTNL,
10758         },
10759         {
10760                 .cmd = NL80211_CMD_RADAR_DETECT,
10761                 .doit = nl80211_start_radar_detection,
10762                 .policy = nl80211_policy,
10763                 .flags = GENL_ADMIN_PERM,
10764                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10765                                   NL80211_FLAG_NEED_RTNL,
10766         },
10767         {
10768                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10769                 .doit = nl80211_get_protocol_features,
10770                 .policy = nl80211_policy,
10771         },
10772         {
10773                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10774                 .doit = nl80211_update_ft_ies,
10775                 .policy = nl80211_policy,
10776                 .flags = GENL_ADMIN_PERM,
10777                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10778                                   NL80211_FLAG_NEED_RTNL,
10779         },
10780         {
10781                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10782                 .doit = nl80211_crit_protocol_start,
10783                 .policy = nl80211_policy,
10784                 .flags = GENL_ADMIN_PERM,
10785                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10786                                   NL80211_FLAG_NEED_RTNL,
10787         },
10788         {
10789                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10790                 .doit = nl80211_crit_protocol_stop,
10791                 .policy = nl80211_policy,
10792                 .flags = GENL_ADMIN_PERM,
10793                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10794                                   NL80211_FLAG_NEED_RTNL,
10795         },
10796         {
10797                 .cmd = NL80211_CMD_GET_COALESCE,
10798                 .doit = nl80211_get_coalesce,
10799                 .policy = nl80211_policy,
10800                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10801                                   NL80211_FLAG_NEED_RTNL,
10802         },
10803         {
10804                 .cmd = NL80211_CMD_SET_COALESCE,
10805                 .doit = nl80211_set_coalesce,
10806                 .policy = nl80211_policy,
10807                 .flags = GENL_ADMIN_PERM,
10808                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10809                                   NL80211_FLAG_NEED_RTNL,
10810         },
10811         {
10812                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10813                 .doit = nl80211_channel_switch,
10814                 .policy = nl80211_policy,
10815                 .flags = GENL_ADMIN_PERM,
10816                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10817                                   NL80211_FLAG_NEED_RTNL,
10818         },
10819         {
10820                 .cmd = NL80211_CMD_VENDOR,
10821                 .doit = nl80211_vendor_cmd,
10822                 .policy = nl80211_policy,
10823                 .flags = GENL_ADMIN_PERM,
10824                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10825                                   NL80211_FLAG_NEED_RTNL,
10826         },
10827         {
10828                 .cmd = NL80211_CMD_SET_QOS_MAP,
10829                 .doit = nl80211_set_qos_map,
10830                 .policy = nl80211_policy,
10831                 .flags = GENL_ADMIN_PERM,
10832                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10833                                   NL80211_FLAG_NEED_RTNL,
10834         },
10835         {
10836                 .cmd = NL80211_CMD_ADD_TX_TS,
10837                 .doit = nl80211_add_tx_ts,
10838                 .policy = nl80211_policy,
10839                 .flags = GENL_ADMIN_PERM,
10840                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10841                                   NL80211_FLAG_NEED_RTNL,
10842         },
10843         {
10844                 .cmd = NL80211_CMD_DEL_TX_TS,
10845                 .doit = nl80211_del_tx_ts,
10846                 .policy = nl80211_policy,
10847                 .flags = GENL_ADMIN_PERM,
10848                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10849                                   NL80211_FLAG_NEED_RTNL,
10850         },
10851         {
10852                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10853                 .doit = nl80211_tdls_channel_switch,
10854                 .policy = nl80211_policy,
10855                 .flags = GENL_ADMIN_PERM,
10856                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10857                                   NL80211_FLAG_NEED_RTNL,
10858         },
10859         {
10860                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10861                 .doit = nl80211_tdls_cancel_channel_switch,
10862                 .policy = nl80211_policy,
10863                 .flags = GENL_ADMIN_PERM,
10864                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10865                                   NL80211_FLAG_NEED_RTNL,
10866         },
10867 };
10868
10869 /* notification functions */
10870
10871 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10872                           enum nl80211_commands cmd)
10873 {
10874         struct sk_buff *msg;
10875         struct nl80211_dump_wiphy_state state = {};
10876
10877         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10878                 cmd != NL80211_CMD_DEL_WIPHY);
10879
10880         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10881         if (!msg)
10882                 return;
10883
10884         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10885                 nlmsg_free(msg);
10886                 return;
10887         }
10888
10889         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10890                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10891 }
10892
10893 static int nl80211_add_scan_req(struct sk_buff *msg,
10894                                 struct cfg80211_registered_device *rdev)
10895 {
10896         struct cfg80211_scan_request *req = rdev->scan_req;
10897         struct nlattr *nest;
10898         int i;
10899
10900         if (WARN_ON(!req))
10901                 return 0;
10902
10903         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10904         if (!nest)
10905                 goto nla_put_failure;
10906         for (i = 0; i < req->n_ssids; i++) {
10907                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10908                         goto nla_put_failure;
10909         }
10910         nla_nest_end(msg, nest);
10911
10912         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10913         if (!nest)
10914                 goto nla_put_failure;
10915         for (i = 0; i < req->n_channels; i++) {
10916                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10917                         goto nla_put_failure;
10918         }
10919         nla_nest_end(msg, nest);
10920
10921         if (req->ie &&
10922             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10923                 goto nla_put_failure;
10924
10925         if (req->flags &&
10926             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10927                 goto nla_put_failure;
10928
10929         return 0;
10930  nla_put_failure:
10931         return -ENOBUFS;
10932 }
10933
10934 static int nl80211_send_scan_msg(struct sk_buff *msg,
10935                                  struct cfg80211_registered_device *rdev,
10936                                  struct wireless_dev *wdev,
10937                                  u32 portid, u32 seq, int flags,
10938                                  u32 cmd)
10939 {
10940         void *hdr;
10941
10942         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10943         if (!hdr)
10944                 return -1;
10945
10946         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10947             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10948                                          wdev->netdev->ifindex)) ||
10949             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10950                 goto nla_put_failure;
10951
10952         /* ignore errors and send incomplete event anyway */
10953         nl80211_add_scan_req(msg, rdev);
10954
10955         return genlmsg_end(msg, hdr);
10956
10957  nla_put_failure:
10958         genlmsg_cancel(msg, hdr);
10959         return -EMSGSIZE;
10960 }
10961
10962 static int
10963 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10964                             struct cfg80211_registered_device *rdev,
10965                             struct net_device *netdev,
10966                             u32 portid, u32 seq, int flags, u32 cmd)
10967 {
10968         void *hdr;
10969
10970         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10971         if (!hdr)
10972                 return -1;
10973
10974         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10975             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10976                 goto nla_put_failure;
10977
10978         return genlmsg_end(msg, hdr);
10979
10980  nla_put_failure:
10981         genlmsg_cancel(msg, hdr);
10982         return -EMSGSIZE;
10983 }
10984
10985 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10986                              struct wireless_dev *wdev)
10987 {
10988         struct sk_buff *msg;
10989
10990         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10991         if (!msg)
10992                 return;
10993
10994         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10995                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
10996                 nlmsg_free(msg);
10997                 return;
10998         }
10999
11000         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11001                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11002 }
11003
11004 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11005                                        struct wireless_dev *wdev, bool aborted)
11006 {
11007         struct sk_buff *msg;
11008
11009         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11010         if (!msg)
11011                 return NULL;
11012
11013         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11014                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11015                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11016                 nlmsg_free(msg);
11017                 return NULL;
11018         }
11019
11020         return msg;
11021 }
11022
11023 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11024                               struct sk_buff *msg)
11025 {
11026         if (!msg)
11027                 return;
11028
11029         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11030                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11031 }
11032
11033 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11034                                      struct net_device *netdev)
11035 {
11036         struct sk_buff *msg;
11037
11038         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11039         if (!msg)
11040                 return;
11041
11042         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11043                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11044                 nlmsg_free(msg);
11045                 return;
11046         }
11047
11048         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11049                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11050 }
11051
11052 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11053                              struct net_device *netdev, u32 cmd)
11054 {
11055         struct sk_buff *msg;
11056
11057         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11058         if (!msg)
11059                 return;
11060
11061         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11062                 nlmsg_free(msg);
11063                 return;
11064         }
11065
11066         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11067                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11068 }
11069
11070 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11071                                           struct regulatory_request *request)
11072 {
11073         /* Userspace can always count this one always being set */
11074         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11075                 goto nla_put_failure;
11076
11077         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11078                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11079                                NL80211_REGDOM_TYPE_WORLD))
11080                         goto nla_put_failure;
11081         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11082                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11083                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11084                         goto nla_put_failure;
11085         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11086                    request->intersect) {
11087                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11088                                NL80211_REGDOM_TYPE_INTERSECTION))
11089                         goto nla_put_failure;
11090         } else {
11091                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11092                                NL80211_REGDOM_TYPE_COUNTRY) ||
11093                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11094                                    request->alpha2))
11095                         goto nla_put_failure;
11096         }
11097
11098         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11099                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11100
11101                 if (wiphy &&
11102                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11103                         goto nla_put_failure;
11104
11105                 if (wiphy &&
11106                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11107                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11108                         goto nla_put_failure;
11109         }
11110
11111         return true;
11112
11113 nla_put_failure:
11114         return false;
11115 }
11116
11117 /*
11118  * This can happen on global regulatory changes or device specific settings
11119  * based on custom regulatory domains.
11120  */
11121 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11122                                      struct regulatory_request *request)
11123 {
11124         struct sk_buff *msg;
11125         void *hdr;
11126
11127         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11128         if (!msg)
11129                 return;
11130
11131         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11132         if (!hdr) {
11133                 nlmsg_free(msg);
11134                 return;
11135         }
11136
11137         if (nl80211_reg_change_event_fill(msg, request) == false)
11138                 goto nla_put_failure;
11139
11140         genlmsg_end(msg, hdr);
11141
11142         rcu_read_lock();
11143         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11144                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11145         rcu_read_unlock();
11146
11147         return;
11148
11149 nla_put_failure:
11150         genlmsg_cancel(msg, hdr);
11151         nlmsg_free(msg);
11152 }
11153
11154 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11155                                     struct net_device *netdev,
11156                                     const u8 *buf, size_t len,
11157                                     enum nl80211_commands cmd, gfp_t gfp,
11158                                     int uapsd_queues)
11159 {
11160         struct sk_buff *msg;
11161         void *hdr;
11162
11163         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11164         if (!msg)
11165                 return;
11166
11167         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11168         if (!hdr) {
11169                 nlmsg_free(msg);
11170                 return;
11171         }
11172
11173         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11174             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11175             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11176                 goto nla_put_failure;
11177
11178         if (uapsd_queues >= 0) {
11179                 struct nlattr *nla_wmm =
11180                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11181                 if (!nla_wmm)
11182                         goto nla_put_failure;
11183
11184                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11185                                uapsd_queues))
11186                         goto nla_put_failure;
11187
11188                 nla_nest_end(msg, nla_wmm);
11189         }
11190
11191         genlmsg_end(msg, hdr);
11192
11193         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11194                                 NL80211_MCGRP_MLME, gfp);
11195         return;
11196
11197  nla_put_failure:
11198         genlmsg_cancel(msg, hdr);
11199         nlmsg_free(msg);
11200 }
11201
11202 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11203                           struct net_device *netdev, const u8 *buf,
11204                           size_t len, gfp_t gfp)
11205 {
11206         nl80211_send_mlme_event(rdev, netdev, buf, len,
11207                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11208 }
11209
11210 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11211                            struct net_device *netdev, const u8 *buf,
11212                            size_t len, gfp_t gfp, int uapsd_queues)
11213 {
11214         nl80211_send_mlme_event(rdev, netdev, buf, len,
11215                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11216 }
11217
11218 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11219                          struct net_device *netdev, const u8 *buf,
11220                          size_t len, gfp_t gfp)
11221 {
11222         nl80211_send_mlme_event(rdev, netdev, buf, len,
11223                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11224 }
11225
11226 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11227                            struct net_device *netdev, const u8 *buf,
11228                            size_t len, gfp_t gfp)
11229 {
11230         nl80211_send_mlme_event(rdev, netdev, buf, len,
11231                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11232 }
11233
11234 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11235                                   size_t len)
11236 {
11237         struct wireless_dev *wdev = dev->ieee80211_ptr;
11238         struct wiphy *wiphy = wdev->wiphy;
11239         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11240         const struct ieee80211_mgmt *mgmt = (void *)buf;
11241         u32 cmd;
11242
11243         if (WARN_ON(len < 2))
11244                 return;
11245
11246         if (ieee80211_is_deauth(mgmt->frame_control))
11247                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11248         else
11249                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11250
11251         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11252         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11253 }
11254 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11255
11256 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11257                                       struct net_device *netdev, int cmd,
11258                                       const u8 *addr, gfp_t gfp)
11259 {
11260         struct sk_buff *msg;
11261         void *hdr;
11262
11263         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11264         if (!msg)
11265                 return;
11266
11267         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11268         if (!hdr) {
11269                 nlmsg_free(msg);
11270                 return;
11271         }
11272
11273         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11274             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11275             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11277                 goto nla_put_failure;
11278
11279         genlmsg_end(msg, hdr);
11280
11281         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11282                                 NL80211_MCGRP_MLME, gfp);
11283         return;
11284
11285  nla_put_failure:
11286         genlmsg_cancel(msg, hdr);
11287         nlmsg_free(msg);
11288 }
11289
11290 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11291                                struct net_device *netdev, const u8 *addr,
11292                                gfp_t gfp)
11293 {
11294         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11295                                   addr, gfp);
11296 }
11297
11298 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11299                                 struct net_device *netdev, const u8 *addr,
11300                                 gfp_t gfp)
11301 {
11302         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11303                                   addr, gfp);
11304 }
11305
11306 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11307                                  struct net_device *netdev, const u8 *bssid,
11308                                  const u8 *req_ie, size_t req_ie_len,
11309                                  const u8 *resp_ie, size_t resp_ie_len,
11310                                  u16 status, gfp_t gfp)
11311 {
11312         struct sk_buff *msg;
11313         void *hdr;
11314
11315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11316         if (!msg)
11317                 return;
11318
11319         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11320         if (!hdr) {
11321                 nlmsg_free(msg);
11322                 return;
11323         }
11324
11325         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11326             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11327             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11328             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11329             (req_ie &&
11330              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11331             (resp_ie &&
11332              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11333                 goto nla_put_failure;
11334
11335         genlmsg_end(msg, hdr);
11336
11337         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11338                                 NL80211_MCGRP_MLME, gfp);
11339         return;
11340
11341  nla_put_failure:
11342         genlmsg_cancel(msg, hdr);
11343         nlmsg_free(msg);
11344
11345 }
11346
11347 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11348                          struct net_device *netdev, const u8 *bssid,
11349                          const u8 *req_ie, size_t req_ie_len,
11350                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11351 {
11352         struct sk_buff *msg;
11353         void *hdr;
11354
11355         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11356         if (!msg)
11357                 return;
11358
11359         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11360         if (!hdr) {
11361                 nlmsg_free(msg);
11362                 return;
11363         }
11364
11365         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11366             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11367             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11368             (req_ie &&
11369              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11370             (resp_ie &&
11371              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11372                 goto nla_put_failure;
11373
11374         genlmsg_end(msg, hdr);
11375
11376         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11377                                 NL80211_MCGRP_MLME, gfp);
11378         return;
11379
11380  nla_put_failure:
11381         genlmsg_cancel(msg, hdr);
11382         nlmsg_free(msg);
11383
11384 }
11385
11386 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11387                                struct net_device *netdev, u16 reason,
11388                                const u8 *ie, size_t ie_len, bool from_ap)
11389 {
11390         struct sk_buff *msg;
11391         void *hdr;
11392
11393         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11394         if (!msg)
11395                 return;
11396
11397         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11398         if (!hdr) {
11399                 nlmsg_free(msg);
11400                 return;
11401         }
11402
11403         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11404             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11405             (from_ap && reason &&
11406              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11407             (from_ap &&
11408              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11409             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11410                 goto nla_put_failure;
11411
11412         genlmsg_end(msg, hdr);
11413
11414         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11415                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11416         return;
11417
11418  nla_put_failure:
11419         genlmsg_cancel(msg, hdr);
11420         nlmsg_free(msg);
11421
11422 }
11423
11424 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11425                              struct net_device *netdev, const u8 *bssid,
11426                              gfp_t gfp)
11427 {
11428         struct sk_buff *msg;
11429         void *hdr;
11430
11431         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11432         if (!msg)
11433                 return;
11434
11435         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11436         if (!hdr) {
11437                 nlmsg_free(msg);
11438                 return;
11439         }
11440
11441         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11442             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11443             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11444                 goto nla_put_failure;
11445
11446         genlmsg_end(msg, hdr);
11447
11448         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11449                                 NL80211_MCGRP_MLME, gfp);
11450         return;
11451
11452  nla_put_failure:
11453         genlmsg_cancel(msg, hdr);
11454         nlmsg_free(msg);
11455 }
11456
11457 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11458                                         const u8* ie, u8 ie_len, gfp_t gfp)
11459 {
11460         struct wireless_dev *wdev = dev->ieee80211_ptr;
11461         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11462         struct sk_buff *msg;
11463         void *hdr;
11464
11465         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11466                 return;
11467
11468         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11469
11470         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11471         if (!msg)
11472                 return;
11473
11474         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11475         if (!hdr) {
11476                 nlmsg_free(msg);
11477                 return;
11478         }
11479
11480         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11481             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11482             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11483             (ie_len && ie &&
11484              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11485                 goto nla_put_failure;
11486
11487         genlmsg_end(msg, hdr);
11488
11489         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11490                                 NL80211_MCGRP_MLME, gfp);
11491         return;
11492
11493  nla_put_failure:
11494         genlmsg_cancel(msg, hdr);
11495         nlmsg_free(msg);
11496 }
11497 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11498
11499 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11500                                  struct net_device *netdev, const u8 *addr,
11501                                  enum nl80211_key_type key_type, int key_id,
11502                                  const u8 *tsc, gfp_t gfp)
11503 {
11504         struct sk_buff *msg;
11505         void *hdr;
11506
11507         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11508         if (!msg)
11509                 return;
11510
11511         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11512         if (!hdr) {
11513                 nlmsg_free(msg);
11514                 return;
11515         }
11516
11517         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11518             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11519             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11520             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11521             (key_id != -1 &&
11522              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11523             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11524                 goto nla_put_failure;
11525
11526         genlmsg_end(msg, hdr);
11527
11528         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11529                                 NL80211_MCGRP_MLME, gfp);
11530         return;
11531
11532  nla_put_failure:
11533         genlmsg_cancel(msg, hdr);
11534         nlmsg_free(msg);
11535 }
11536
11537 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11538                                     struct ieee80211_channel *channel_before,
11539                                     struct ieee80211_channel *channel_after)
11540 {
11541         struct sk_buff *msg;
11542         void *hdr;
11543         struct nlattr *nl_freq;
11544
11545         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11546         if (!msg)
11547                 return;
11548
11549         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11550         if (!hdr) {
11551                 nlmsg_free(msg);
11552                 return;
11553         }
11554
11555         /*
11556          * Since we are applying the beacon hint to a wiphy we know its
11557          * wiphy_idx is valid
11558          */
11559         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11560                 goto nla_put_failure;
11561
11562         /* Before */
11563         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11564         if (!nl_freq)
11565                 goto nla_put_failure;
11566         if (nl80211_msg_put_channel(msg, channel_before, false))
11567                 goto nla_put_failure;
11568         nla_nest_end(msg, nl_freq);
11569
11570         /* After */
11571         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11572         if (!nl_freq)
11573                 goto nla_put_failure;
11574         if (nl80211_msg_put_channel(msg, channel_after, false))
11575                 goto nla_put_failure;
11576         nla_nest_end(msg, nl_freq);
11577
11578         genlmsg_end(msg, hdr);
11579
11580         rcu_read_lock();
11581         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11582                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11583         rcu_read_unlock();
11584
11585         return;
11586
11587 nla_put_failure:
11588         genlmsg_cancel(msg, hdr);
11589         nlmsg_free(msg);
11590 }
11591
11592 static void nl80211_send_remain_on_chan_event(
11593         int cmd, struct cfg80211_registered_device *rdev,
11594         struct wireless_dev *wdev, u64 cookie,
11595         struct ieee80211_channel *chan,
11596         unsigned int duration, gfp_t gfp)
11597 {
11598         struct sk_buff *msg;
11599         void *hdr;
11600
11601         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11602         if (!msg)
11603                 return;
11604
11605         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11606         if (!hdr) {
11607                 nlmsg_free(msg);
11608                 return;
11609         }
11610
11611         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11612             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11613                                          wdev->netdev->ifindex)) ||
11614             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11615             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11616             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11617                         NL80211_CHAN_NO_HT) ||
11618             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11619                 goto nla_put_failure;
11620
11621         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11622             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11623                 goto nla_put_failure;
11624
11625         genlmsg_end(msg, hdr);
11626
11627         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11628                                 NL80211_MCGRP_MLME, gfp);
11629         return;
11630
11631  nla_put_failure:
11632         genlmsg_cancel(msg, hdr);
11633         nlmsg_free(msg);
11634 }
11635
11636 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11637                                struct ieee80211_channel *chan,
11638                                unsigned int duration, gfp_t gfp)
11639 {
11640         struct wiphy *wiphy = wdev->wiphy;
11641         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11642
11643         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11644         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11645                                           rdev, wdev, cookie, chan,
11646                                           duration, gfp);
11647 }
11648 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11649
11650 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11651                                         struct ieee80211_channel *chan,
11652                                         gfp_t gfp)
11653 {
11654         struct wiphy *wiphy = wdev->wiphy;
11655         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11656
11657         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11658         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11659                                           rdev, wdev, cookie, chan, 0, gfp);
11660 }
11661 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11662
11663 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11664                       struct station_info *sinfo, gfp_t gfp)
11665 {
11666         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11667         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11668         struct sk_buff *msg;
11669
11670         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11671
11672         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11673         if (!msg)
11674                 return;
11675
11676         if (nl80211_send_station(msg, 0, 0, 0,
11677                                  rdev, dev, mac_addr, sinfo) < 0) {
11678                 nlmsg_free(msg);
11679                 return;
11680         }
11681
11682         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11683                                 NL80211_MCGRP_MLME, gfp);
11684 }
11685 EXPORT_SYMBOL(cfg80211_new_sta);
11686
11687 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11688 {
11689         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11690         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11691         struct sk_buff *msg;
11692         void *hdr;
11693
11694         trace_cfg80211_del_sta(dev, mac_addr);
11695
11696         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11697         if (!msg)
11698                 return;
11699
11700         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11701         if (!hdr) {
11702                 nlmsg_free(msg);
11703                 return;
11704         }
11705
11706         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11707             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11708                 goto nla_put_failure;
11709
11710         genlmsg_end(msg, hdr);
11711
11712         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11713                                 NL80211_MCGRP_MLME, gfp);
11714         return;
11715
11716  nla_put_failure:
11717         genlmsg_cancel(msg, hdr);
11718         nlmsg_free(msg);
11719 }
11720 EXPORT_SYMBOL(cfg80211_del_sta);
11721
11722 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11723                           enum nl80211_connect_failed_reason reason,
11724                           gfp_t gfp)
11725 {
11726         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11727         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11728         struct sk_buff *msg;
11729         void *hdr;
11730
11731         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11732         if (!msg)
11733                 return;
11734
11735         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11736         if (!hdr) {
11737                 nlmsg_free(msg);
11738                 return;
11739         }
11740
11741         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11742             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11743             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11744                 goto nla_put_failure;
11745
11746         genlmsg_end(msg, hdr);
11747
11748         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11749                                 NL80211_MCGRP_MLME, gfp);
11750         return;
11751
11752  nla_put_failure:
11753         genlmsg_cancel(msg, hdr);
11754         nlmsg_free(msg);
11755 }
11756 EXPORT_SYMBOL(cfg80211_conn_failed);
11757
11758 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11759                                        const u8 *addr, gfp_t gfp)
11760 {
11761         struct wireless_dev *wdev = dev->ieee80211_ptr;
11762         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11763         struct sk_buff *msg;
11764         void *hdr;
11765         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11766
11767         if (!nlportid)
11768                 return false;
11769
11770         msg = nlmsg_new(100, gfp);
11771         if (!msg)
11772                 return true;
11773
11774         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11775         if (!hdr) {
11776                 nlmsg_free(msg);
11777                 return true;
11778         }
11779
11780         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11781             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11782             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11783                 goto nla_put_failure;
11784
11785         genlmsg_end(msg, hdr);
11786         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11787         return true;
11788
11789  nla_put_failure:
11790         genlmsg_cancel(msg, hdr);
11791         nlmsg_free(msg);
11792         return true;
11793 }
11794
11795 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11796                                 const u8 *addr, gfp_t gfp)
11797 {
11798         struct wireless_dev *wdev = dev->ieee80211_ptr;
11799         bool ret;
11800
11801         trace_cfg80211_rx_spurious_frame(dev, addr);
11802
11803         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11804                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11805                 trace_cfg80211_return_bool(false);
11806                 return false;
11807         }
11808         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11809                                          addr, gfp);
11810         trace_cfg80211_return_bool(ret);
11811         return ret;
11812 }
11813 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11814
11815 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11816                                         const u8 *addr, gfp_t gfp)
11817 {
11818         struct wireless_dev *wdev = dev->ieee80211_ptr;
11819         bool ret;
11820
11821         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11822
11823         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11824                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11825                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11826                 trace_cfg80211_return_bool(false);
11827                 return false;
11828         }
11829         ret = __nl80211_unexpected_frame(dev,
11830                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11831                                          addr, gfp);
11832         trace_cfg80211_return_bool(ret);
11833         return ret;
11834 }
11835 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11836
11837 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11838                       struct wireless_dev *wdev, u32 nlportid,
11839                       int freq, int sig_dbm,
11840                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11841 {
11842         struct net_device *netdev = wdev->netdev;
11843         struct sk_buff *msg;
11844         void *hdr;
11845
11846         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11847         if (!msg)
11848                 return -ENOMEM;
11849
11850         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11851         if (!hdr) {
11852                 nlmsg_free(msg);
11853                 return -ENOMEM;
11854         }
11855
11856         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11857             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11858                                         netdev->ifindex)) ||
11859             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11860             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11861             (sig_dbm &&
11862              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11863             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11864             (flags &&
11865              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11866                 goto nla_put_failure;
11867
11868         genlmsg_end(msg, hdr);
11869
11870         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11871
11872  nla_put_failure:
11873         genlmsg_cancel(msg, hdr);
11874         nlmsg_free(msg);
11875         return -ENOBUFS;
11876 }
11877
11878 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11879                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11880 {
11881         struct wiphy *wiphy = wdev->wiphy;
11882         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11883         struct net_device *netdev = wdev->netdev;
11884         struct sk_buff *msg;
11885         void *hdr;
11886
11887         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11888
11889         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11890         if (!msg)
11891                 return;
11892
11893         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11894         if (!hdr) {
11895                 nlmsg_free(msg);
11896                 return;
11897         }
11898
11899         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11900             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11901                                    netdev->ifindex)) ||
11902             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11903             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11904             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11905             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11906                 goto nla_put_failure;
11907
11908         genlmsg_end(msg, hdr);
11909
11910         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11911                                 NL80211_MCGRP_MLME, gfp);
11912         return;
11913
11914  nla_put_failure:
11915         genlmsg_cancel(msg, hdr);
11916         nlmsg_free(msg);
11917 }
11918 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11919
11920 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11921                                             const char *mac, gfp_t gfp)
11922 {
11923         struct wireless_dev *wdev = dev->ieee80211_ptr;
11924         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11925         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11926         void **cb;
11927
11928         if (!msg)
11929                 return NULL;
11930
11931         cb = (void **)msg->cb;
11932
11933         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11934         if (!cb[0]) {
11935                 nlmsg_free(msg);
11936                 return NULL;
11937         }
11938
11939         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11940             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11941                 goto nla_put_failure;
11942
11943         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11944                 goto nla_put_failure;
11945
11946         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11947         if (!cb[1])
11948                 goto nla_put_failure;
11949
11950         cb[2] = rdev;
11951
11952         return msg;
11953  nla_put_failure:
11954         nlmsg_free(msg);
11955         return NULL;
11956 }
11957
11958 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11959 {
11960         void **cb = (void **)msg->cb;
11961         struct cfg80211_registered_device *rdev = cb[2];
11962
11963         nla_nest_end(msg, cb[1]);
11964         genlmsg_end(msg, cb[0]);
11965
11966         memset(msg->cb, 0, sizeof(msg->cb));
11967
11968         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11969                                 NL80211_MCGRP_MLME, gfp);
11970 }
11971
11972 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11973                               enum nl80211_cqm_rssi_threshold_event rssi_event,
11974                               gfp_t gfp)
11975 {
11976         struct sk_buff *msg;
11977
11978         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11979
11980         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11981                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11982                 return;
11983
11984         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11985         if (!msg)
11986                 return;
11987
11988         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11989                         rssi_event))
11990                 goto nla_put_failure;
11991
11992         cfg80211_send_cqm(msg, gfp);
11993
11994         return;
11995
11996  nla_put_failure:
11997         nlmsg_free(msg);
11998 }
11999 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12000
12001 void cfg80211_cqm_txe_notify(struct net_device *dev,
12002                              const u8 *peer, u32 num_packets,
12003                              u32 rate, u32 intvl, gfp_t gfp)
12004 {
12005         struct sk_buff *msg;
12006
12007         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12008         if (!msg)
12009                 return;
12010
12011         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12012                 goto nla_put_failure;
12013
12014         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12015                 goto nla_put_failure;
12016
12017         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12018                 goto nla_put_failure;
12019
12020         cfg80211_send_cqm(msg, gfp);
12021         return;
12022
12023  nla_put_failure:
12024         nlmsg_free(msg);
12025 }
12026 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12027
12028 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12029                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12030 {
12031         struct sk_buff *msg;
12032
12033         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12034
12035         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12036         if (!msg)
12037                 return;
12038
12039         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12040                 goto nla_put_failure;
12041
12042         cfg80211_send_cqm(msg, gfp);
12043         return;
12044
12045  nla_put_failure:
12046         nlmsg_free(msg);
12047 }
12048 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12049
12050 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12051 {
12052         struct sk_buff *msg;
12053
12054         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12055         if (!msg)
12056                 return;
12057
12058         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12059                 goto nla_put_failure;
12060
12061         cfg80211_send_cqm(msg, gfp);
12062         return;
12063
12064  nla_put_failure:
12065         nlmsg_free(msg);
12066 }
12067 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12068
12069 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12070                                      struct net_device *netdev, const u8 *bssid,
12071                                      const u8 *replay_ctr, gfp_t gfp)
12072 {
12073         struct sk_buff *msg;
12074         struct nlattr *rekey_attr;
12075         void *hdr;
12076
12077         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12078         if (!msg)
12079                 return;
12080
12081         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12082         if (!hdr) {
12083                 nlmsg_free(msg);
12084                 return;
12085         }
12086
12087         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12088             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12089             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12090                 goto nla_put_failure;
12091
12092         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12093         if (!rekey_attr)
12094                 goto nla_put_failure;
12095
12096         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12097                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12098                 goto nla_put_failure;
12099
12100         nla_nest_end(msg, rekey_attr);
12101
12102         genlmsg_end(msg, hdr);
12103
12104         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12105                                 NL80211_MCGRP_MLME, gfp);
12106         return;
12107
12108  nla_put_failure:
12109         genlmsg_cancel(msg, hdr);
12110         nlmsg_free(msg);
12111 }
12112
12113 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12114                                const u8 *replay_ctr, gfp_t gfp)
12115 {
12116         struct wireless_dev *wdev = dev->ieee80211_ptr;
12117         struct wiphy *wiphy = wdev->wiphy;
12118         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12119
12120         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12121         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12122 }
12123 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12124
12125 static void
12126 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12127                                struct net_device *netdev, int index,
12128                                const u8 *bssid, bool preauth, gfp_t gfp)
12129 {
12130         struct sk_buff *msg;
12131         struct nlattr *attr;
12132         void *hdr;
12133
12134         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12135         if (!msg)
12136                 return;
12137
12138         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12139         if (!hdr) {
12140                 nlmsg_free(msg);
12141                 return;
12142         }
12143
12144         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12145             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12146                 goto nla_put_failure;
12147
12148         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12149         if (!attr)
12150                 goto nla_put_failure;
12151
12152         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12153             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12154             (preauth &&
12155              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12156                 goto nla_put_failure;
12157
12158         nla_nest_end(msg, attr);
12159
12160         genlmsg_end(msg, hdr);
12161
12162         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12163                                 NL80211_MCGRP_MLME, gfp);
12164         return;
12165
12166  nla_put_failure:
12167         genlmsg_cancel(msg, hdr);
12168         nlmsg_free(msg);
12169 }
12170
12171 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12172                                      const u8 *bssid, bool preauth, gfp_t gfp)
12173 {
12174         struct wireless_dev *wdev = dev->ieee80211_ptr;
12175         struct wiphy *wiphy = wdev->wiphy;
12176         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12177
12178         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12179         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12180 }
12181 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12182
12183 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12184                                      struct net_device *netdev,
12185                                      struct cfg80211_chan_def *chandef,
12186                                      gfp_t gfp,
12187                                      enum nl80211_commands notif,
12188                                      u8 count)
12189 {
12190         struct sk_buff *msg;
12191         void *hdr;
12192
12193         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12194         if (!msg)
12195                 return;
12196
12197         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12198         if (!hdr) {
12199                 nlmsg_free(msg);
12200                 return;
12201         }
12202
12203         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12204                 goto nla_put_failure;
12205
12206         if (nl80211_send_chandef(msg, chandef))
12207                 goto nla_put_failure;
12208
12209         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12210             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12211                         goto nla_put_failure;
12212
12213         genlmsg_end(msg, hdr);
12214
12215         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12216                                 NL80211_MCGRP_MLME, gfp);
12217         return;
12218
12219  nla_put_failure:
12220         genlmsg_cancel(msg, hdr);
12221         nlmsg_free(msg);
12222 }
12223
12224 void cfg80211_ch_switch_notify(struct net_device *dev,
12225                                struct cfg80211_chan_def *chandef)
12226 {
12227         struct wireless_dev *wdev = dev->ieee80211_ptr;
12228         struct wiphy *wiphy = wdev->wiphy;
12229         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12230
12231         ASSERT_WDEV_LOCK(wdev);
12232
12233         trace_cfg80211_ch_switch_notify(dev, chandef);
12234
12235         wdev->chandef = *chandef;
12236         wdev->preset_chandef = *chandef;
12237         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12238                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12239 }
12240 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12241
12242 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12243                                        struct cfg80211_chan_def *chandef,
12244                                        u8 count)
12245 {
12246         struct wireless_dev *wdev = dev->ieee80211_ptr;
12247         struct wiphy *wiphy = wdev->wiphy;
12248         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12249
12250         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12251
12252         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12253                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12254 }
12255 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12256
12257 void
12258 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12259                      const struct cfg80211_chan_def *chandef,
12260                      enum nl80211_radar_event event,
12261                      struct net_device *netdev, gfp_t gfp)
12262 {
12263         struct sk_buff *msg;
12264         void *hdr;
12265
12266         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12267         if (!msg)
12268                 return;
12269
12270         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12271         if (!hdr) {
12272                 nlmsg_free(msg);
12273                 return;
12274         }
12275
12276         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12277                 goto nla_put_failure;
12278
12279         /* NOP and radar events don't need a netdev parameter */
12280         if (netdev) {
12281                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12282
12283                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12284                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12285                         goto nla_put_failure;
12286         }
12287
12288         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12289                 goto nla_put_failure;
12290
12291         if (nl80211_send_chandef(msg, chandef))
12292                 goto nla_put_failure;
12293
12294         genlmsg_end(msg, hdr);
12295
12296         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12297                                 NL80211_MCGRP_MLME, gfp);
12298         return;
12299
12300  nla_put_failure:
12301         genlmsg_cancel(msg, hdr);
12302         nlmsg_free(msg);
12303 }
12304
12305 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12306                            u64 cookie, bool acked, gfp_t gfp)
12307 {
12308         struct wireless_dev *wdev = dev->ieee80211_ptr;
12309         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12310         struct sk_buff *msg;
12311         void *hdr;
12312
12313         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12314
12315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12316
12317         if (!msg)
12318                 return;
12319
12320         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12321         if (!hdr) {
12322                 nlmsg_free(msg);
12323                 return;
12324         }
12325
12326         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12327             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12328             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12329             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12330             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12331                 goto nla_put_failure;
12332
12333         genlmsg_end(msg, hdr);
12334
12335         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12336                                 NL80211_MCGRP_MLME, gfp);
12337         return;
12338
12339  nla_put_failure:
12340         genlmsg_cancel(msg, hdr);
12341         nlmsg_free(msg);
12342 }
12343 EXPORT_SYMBOL(cfg80211_probe_status);
12344
12345 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12346                                  const u8 *frame, size_t len,
12347                                  int freq, int sig_dbm)
12348 {
12349         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12350         struct sk_buff *msg;
12351         void *hdr;
12352         struct cfg80211_beacon_registration *reg;
12353
12354         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12355
12356         spin_lock_bh(&rdev->beacon_registrations_lock);
12357         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12358                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12359                 if (!msg) {
12360                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12361                         return;
12362                 }
12363
12364                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12365                 if (!hdr)
12366                         goto nla_put_failure;
12367
12368                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12369                     (freq &&
12370                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12371                     (sig_dbm &&
12372                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12373                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12374                         goto nla_put_failure;
12375
12376                 genlmsg_end(msg, hdr);
12377
12378                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12379         }
12380         spin_unlock_bh(&rdev->beacon_registrations_lock);
12381         return;
12382
12383  nla_put_failure:
12384         spin_unlock_bh(&rdev->beacon_registrations_lock);
12385         if (hdr)
12386                 genlmsg_cancel(msg, hdr);
12387         nlmsg_free(msg);
12388 }
12389 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12390
12391 #ifdef CONFIG_PM
12392 static int cfg80211_net_detect_results(struct sk_buff *msg,
12393                                        struct cfg80211_wowlan_wakeup *wakeup)
12394 {
12395         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12396         struct nlattr *nl_results, *nl_match, *nl_freqs;
12397         int i, j;
12398
12399         nl_results = nla_nest_start(
12400                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12401         if (!nl_results)
12402                 return -EMSGSIZE;
12403
12404         for (i = 0; i < nd->n_matches; i++) {
12405                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12406
12407                 nl_match = nla_nest_start(msg, i);
12408                 if (!nl_match)
12409                         break;
12410
12411                 /* The SSID attribute is optional in nl80211, but for
12412                  * simplicity reasons it's always present in the
12413                  * cfg80211 structure.  If a driver can't pass the
12414                  * SSID, that needs to be changed.  A zero length SSID
12415                  * is still a valid SSID (wildcard), so it cannot be
12416                  * used for this purpose.
12417                  */
12418                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12419                             match->ssid.ssid)) {
12420                         nla_nest_cancel(msg, nl_match);
12421                         goto out;
12422                 }
12423
12424                 if (match->n_channels) {
12425                         nl_freqs = nla_nest_start(
12426                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12427                         if (!nl_freqs) {
12428                                 nla_nest_cancel(msg, nl_match);
12429                                 goto out;
12430                         }
12431
12432                         for (j = 0; j < match->n_channels; j++) {
12433                                 if (nla_put_u32(msg,
12434                                                 NL80211_ATTR_WIPHY_FREQ,
12435                                                 match->channels[j])) {
12436                                         nla_nest_cancel(msg, nl_freqs);
12437                                         nla_nest_cancel(msg, nl_match);
12438                                         goto out;
12439                                 }
12440                         }
12441
12442                         nla_nest_end(msg, nl_freqs);
12443                 }
12444
12445                 nla_nest_end(msg, nl_match);
12446         }
12447
12448 out:
12449         nla_nest_end(msg, nl_results);
12450         return 0;
12451 }
12452
12453 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12454                                    struct cfg80211_wowlan_wakeup *wakeup,
12455                                    gfp_t gfp)
12456 {
12457         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12458         struct sk_buff *msg;
12459         void *hdr;
12460         int size = 200;
12461
12462         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12463
12464         if (wakeup)
12465                 size += wakeup->packet_present_len;
12466
12467         msg = nlmsg_new(size, gfp);
12468         if (!msg)
12469                 return;
12470
12471         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12472         if (!hdr)
12473                 goto free_msg;
12474
12475         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12476             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12477                 goto free_msg;
12478
12479         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12480                                         wdev->netdev->ifindex))
12481                 goto free_msg;
12482
12483         if (wakeup) {
12484                 struct nlattr *reasons;
12485
12486                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12487                 if (!reasons)
12488                         goto free_msg;
12489
12490                 if (wakeup->disconnect &&
12491                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12492                         goto free_msg;
12493                 if (wakeup->magic_pkt &&
12494                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12495                         goto free_msg;
12496                 if (wakeup->gtk_rekey_failure &&
12497                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12498                         goto free_msg;
12499                 if (wakeup->eap_identity_req &&
12500                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12501                         goto free_msg;
12502                 if (wakeup->four_way_handshake &&
12503                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12504                         goto free_msg;
12505                 if (wakeup->rfkill_release &&
12506                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12507                         goto free_msg;
12508
12509                 if (wakeup->pattern_idx >= 0 &&
12510                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12511                                 wakeup->pattern_idx))
12512                         goto free_msg;
12513
12514                 if (wakeup->tcp_match &&
12515                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12516                         goto free_msg;
12517
12518                 if (wakeup->tcp_connlost &&
12519                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12520                         goto free_msg;
12521
12522                 if (wakeup->tcp_nomoretokens &&
12523                     nla_put_flag(msg,
12524                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12525                         goto free_msg;
12526
12527                 if (wakeup->packet) {
12528                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12529                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12530
12531                         if (!wakeup->packet_80211) {
12532                                 pkt_attr =
12533                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12534                                 len_attr =
12535                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12536                         }
12537
12538                         if (wakeup->packet_len &&
12539                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12540                                 goto free_msg;
12541
12542                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12543                                     wakeup->packet))
12544                                 goto free_msg;
12545                 }
12546
12547                 if (wakeup->net_detect &&
12548                     cfg80211_net_detect_results(msg, wakeup))
12549                                 goto free_msg;
12550
12551                 nla_nest_end(msg, reasons);
12552         }
12553
12554         genlmsg_end(msg, hdr);
12555
12556         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12557                                 NL80211_MCGRP_MLME, gfp);
12558         return;
12559
12560  free_msg:
12561         nlmsg_free(msg);
12562 }
12563 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12564 #endif
12565
12566 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12567                                 enum nl80211_tdls_operation oper,
12568                                 u16 reason_code, gfp_t gfp)
12569 {
12570         struct wireless_dev *wdev = dev->ieee80211_ptr;
12571         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12572         struct sk_buff *msg;
12573         void *hdr;
12574
12575         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12576                                          reason_code);
12577
12578         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12579         if (!msg)
12580                 return;
12581
12582         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12583         if (!hdr) {
12584                 nlmsg_free(msg);
12585                 return;
12586         }
12587
12588         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12589             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12590             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12591             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12592             (reason_code > 0 &&
12593              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12594                 goto nla_put_failure;
12595
12596         genlmsg_end(msg, hdr);
12597
12598         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12599                                 NL80211_MCGRP_MLME, gfp);
12600         return;
12601
12602  nla_put_failure:
12603         genlmsg_cancel(msg, hdr);
12604         nlmsg_free(msg);
12605 }
12606 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12607
12608 static int nl80211_netlink_notify(struct notifier_block * nb,
12609                                   unsigned long state,
12610                                   void *_notify)
12611 {
12612         struct netlink_notify *notify = _notify;
12613         struct cfg80211_registered_device *rdev;
12614         struct wireless_dev *wdev;
12615         struct cfg80211_beacon_registration *reg, *tmp;
12616
12617         if (state != NETLINK_URELEASE)
12618                 return NOTIFY_DONE;
12619
12620         rcu_read_lock();
12621
12622         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12623                 bool schedule_destroy_work = false;
12624                 bool schedule_scan_stop = false;
12625                 struct cfg80211_sched_scan_request *sched_scan_req =
12626                         rcu_dereference(rdev->sched_scan_req);
12627
12628                 if (sched_scan_req && notify->portid &&
12629                     sched_scan_req->owner_nlportid == notify->portid)
12630                         schedule_scan_stop = true;
12631
12632                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12633                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12634
12635                         if (wdev->owner_nlportid == notify->portid)
12636                                 schedule_destroy_work = true;
12637                 }
12638
12639                 spin_lock_bh(&rdev->beacon_registrations_lock);
12640                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12641                                          list) {
12642                         if (reg->nlportid == notify->portid) {
12643                                 list_del(&reg->list);
12644                                 kfree(reg);
12645                                 break;
12646                         }
12647                 }
12648                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12649
12650                 if (schedule_destroy_work) {
12651                         struct cfg80211_iface_destroy *destroy;
12652
12653                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12654                         if (destroy) {
12655                                 destroy->nlportid = notify->portid;
12656                                 spin_lock(&rdev->destroy_list_lock);
12657                                 list_add(&destroy->list, &rdev->destroy_list);
12658                                 spin_unlock(&rdev->destroy_list_lock);
12659                                 schedule_work(&rdev->destroy_work);
12660                         }
12661                 } else if (schedule_scan_stop) {
12662                         sched_scan_req->owner_nlportid = 0;
12663
12664                         if (rdev->ops->sched_scan_stop &&
12665                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12666                                 schedule_work(&rdev->sched_scan_stop_wk);
12667                 }
12668         }
12669
12670         rcu_read_unlock();
12671
12672         return NOTIFY_OK;
12673 }
12674
12675 static struct notifier_block nl80211_netlink_notifier = {
12676         .notifier_call = nl80211_netlink_notify,
12677 };
12678
12679 void cfg80211_ft_event(struct net_device *netdev,
12680                        struct cfg80211_ft_event_params *ft_event)
12681 {
12682         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12683         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12684         struct sk_buff *msg;
12685         void *hdr;
12686
12687         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12688
12689         if (!ft_event->target_ap)
12690                 return;
12691
12692         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12693         if (!msg)
12694                 return;
12695
12696         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12697         if (!hdr)
12698                 goto out;
12699
12700         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12701             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12702             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12703                 goto out;
12704
12705         if (ft_event->ies &&
12706             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12707                 goto out;
12708         if (ft_event->ric_ies &&
12709             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12710                     ft_event->ric_ies))
12711                 goto out;
12712
12713         genlmsg_end(msg, hdr);
12714
12715         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12716                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12717         return;
12718  out:
12719         nlmsg_free(msg);
12720 }
12721 EXPORT_SYMBOL(cfg80211_ft_event);
12722
12723 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12724 {
12725         struct cfg80211_registered_device *rdev;
12726         struct sk_buff *msg;
12727         void *hdr;
12728         u32 nlportid;
12729
12730         rdev = wiphy_to_rdev(wdev->wiphy);
12731         if (!rdev->crit_proto_nlportid)
12732                 return;
12733
12734         nlportid = rdev->crit_proto_nlportid;
12735         rdev->crit_proto_nlportid = 0;
12736
12737         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12738         if (!msg)
12739                 return;
12740
12741         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12742         if (!hdr)
12743                 goto nla_put_failure;
12744
12745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12746             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12747                 goto nla_put_failure;
12748
12749         genlmsg_end(msg, hdr);
12750
12751         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12752         return;
12753
12754  nla_put_failure:
12755         if (hdr)
12756                 genlmsg_cancel(msg, hdr);
12757         nlmsg_free(msg);
12758
12759 }
12760 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12761
12762 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12763 {
12764         struct wiphy *wiphy = wdev->wiphy;
12765         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12766         struct sk_buff *msg;
12767         void *hdr;
12768
12769         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12770         if (!msg)
12771                 return;
12772
12773         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12774         if (!hdr)
12775                 goto out;
12776
12777         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12778             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12779             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12780                 goto out;
12781
12782         genlmsg_end(msg, hdr);
12783
12784         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12785                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12786         return;
12787  out:
12788         nlmsg_free(msg);
12789 }
12790
12791 /* initialisation/exit functions */
12792
12793 int nl80211_init(void)
12794 {
12795         int err;
12796
12797         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12798                                                    nl80211_mcgrps);
12799         if (err)
12800                 return err;
12801
12802         err = netlink_register_notifier(&nl80211_netlink_notifier);
12803         if (err)
12804                 goto err_out;
12805
12806         return 0;
12807  err_out:
12808         genl_unregister_family(&nl80211_fam);
12809         return err;
12810 }
12811
12812 void nl80211_exit(void)
12813 {
12814         netlink_unregister_notifier(&nl80211_netlink_notifier);
12815         genl_unregister_family(&nl80211_fam);
12816 }