net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/slab.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <linux/etherdevice.h>
  18 #include <net/net_namespace.h>
  19 #include <net/genetlink.h>
  20 #include <net/cfg80211.h>
  21 #include <net/sock.h>
  22 #include <net/inet_connection_sock.h>
  23 #include "core.h"
  24 #include "nl80211.h"
  25 #include "reg.h"
  26 #include "rdev-ops.h"
  27
  28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  29                                    struct genl_info *info,
  30                                    struct cfg80211_crypto_settings *settings,
  31                                    int cipher_limit);
  32
  33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
  34                             struct genl_info *info);
  35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
  36                               struct genl_info *info);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam = {
  40         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  41         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  42         .hdrsize = 0,                   /* no private header */
  43         .version = 1,                   /* no particular meaning now */
  44         .maxattr = NL80211_ATTR_MAX,
  45         .netnsok = true,
  46         .pre_doit = nl80211_pre_doit,
  47         .post_doit = nl80211_post_doit,
  48 };
  49
  50 /* returns ERR_PTR values */
  51 static struct wireless_dev *
  52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  53 {
  54         struct cfg80211_registered_device *rdev;
  55         struct wireless_dev *result = NULL;
  56         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  57         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  58         u64 wdev_id;
  59         int wiphy_idx = -1;
  60         int ifidx = -1;
  61
  62         ASSERT_RTNL();
  63
  64         if (!have_ifidx && !have_wdev_id)
  65                 return ERR_PTR(-EINVAL);
  66
  67         if (have_ifidx)
  68                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  69         if (have_wdev_id) {
  70                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  71                 wiphy_idx = wdev_id >> 32;
  72         }
  73
  74         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  75                 struct wireless_dev *wdev;
  76
  77                 if (wiphy_net(&rdev->wiphy) != netns)
  78                         continue;
  79
  80                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  81                         continue;
  82
  83                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
  84                         if (have_ifidx && wdev->netdev &&
  85                             wdev->netdev->ifindex == ifidx) {
  86                                 result = wdev;
  87                                 break;
  88                         }
  89                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  90                                 result = wdev;
  91                                 break;
  92                         }
  93                 }
  94
  95                 if (result)
  96                         break;
  97         }
  98
  99         if (result)
 100                 return result;
 101         return ERR_PTR(-ENODEV);
 102 }
 103
 104 static struct cfg80211_registered_device *
 105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 106 {
 107         struct cfg80211_registered_device *rdev = NULL, *tmp;
 108         struct net_device *netdev;
 109
 110         ASSERT_RTNL();
 111
 112         if (!attrs[NL80211_ATTR_WIPHY] &&
 113             !attrs[NL80211_ATTR_IFINDEX] &&
 114             !attrs[NL80211_ATTR_WDEV])
 115                 return ERR_PTR(-EINVAL);
 116
 117         if (attrs[NL80211_ATTR_WIPHY])
 118                 rdev = cfg80211_rdev_by_wiphy_idx(
 119                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 120
 121         if (attrs[NL80211_ATTR_WDEV]) {
 122                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 123                 struct wireless_dev *wdev;
 124                 bool found = false;
 125
 126                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 127                 if (tmp) {
 128                         /* make sure wdev exists */
 129                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 130                                 if (wdev->identifier != (u32)wdev_id)
 131                                         continue;
 132                                 found = true;
 133                                 break;
 134                         }
 135
 136                         if (!found)
 137                                 tmp = NULL;
 138
 139                         if (rdev && tmp != rdev)
 140                                 return ERR_PTR(-EINVAL);
 141                         rdev = tmp;
 142                 }
 143         }
 144
 145         if (attrs[NL80211_ATTR_IFINDEX]) {
 146                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 147                 netdev = dev_get_by_index(netns, ifindex);
 148                 if (netdev) {
 149                         if (netdev->ieee80211_ptr)
 150                                 tmp = wiphy_to_dev(
 151                                                 netdev->ieee80211_ptr->wiphy);
 152                         else
 153                                 tmp = NULL;
 154
 155                         dev_put(netdev);
 156
 157                         /* not wireless device -- return error */
 158                         if (!tmp)
 159                                 return ERR_PTR(-EINVAL);
 160
 161                         /* mismatch -- return error */
 162                         if (rdev && tmp != rdev)
 163                                 return ERR_PTR(-EINVAL);
 164
 165                         rdev = tmp;
 166                 }
 167         }
 168
 169         if (!rdev)
 170                 return ERR_PTR(-ENODEV);
 171
 172         if (netns != wiphy_net(&rdev->wiphy))
 173                 return ERR_PTR(-ENODEV);
 174
 175         return rdev;
 176 }
 177
 178 /*
 179  * This function returns a pointer to the driver
 180  * that the genl_info item that is passed refers to.
 181  *
 182  * The result of this can be a PTR_ERR and hence must
 183  * be checked with IS_ERR() for errors.
 184  */
 185 static struct cfg80211_registered_device *
 186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 187 {
 188         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 189 }
 190
 191 /* policy for the attributes */
 192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 193         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 194         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 195                                       .len = 20-1 },
 196         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 197
 198         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 199         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 200         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 201         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 202         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 203
 204         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 205         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 206         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 207         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 208         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 209
 210         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 211         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 212         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 213
 214         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 215         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 216
 217         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 218         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 219                                     .len = WLAN_MAX_KEY_LEN },
 220         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 221         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 222         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 223         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 224         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 225
 226         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 227         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 229                                        .len = IEEE80211_MAX_DATA_LEN },
 230         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 231                                        .len = IEEE80211_MAX_DATA_LEN },
 232         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 233         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 234         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 235         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 236                                                .len = NL80211_MAX_SUPP_RATES },
 237         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 238         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 239         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 240         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 241                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 242         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 243
 244         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 245         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 246
 247         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 248         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 249         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 250         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 251                                            .len = NL80211_MAX_SUPP_RATES },
 252         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 253
 254         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 256
 257         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 258
 259         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 261                               .len = IEEE80211_MAX_DATA_LEN },
 262         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 263         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 264
 265         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 266                                 .len = IEEE80211_MAX_SSID_LEN },
 267         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 268         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 269         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 270         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 271         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 272         [NL80211_ATTR_STA_FLAGS2] = {
 273                 .len = sizeof(struct nl80211_sta_flag_update),
 274         },
 275         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 276         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 277         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 278         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 279         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 280         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 281         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 282         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 283         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 284                                  .len = WLAN_PMKID_LEN },
 285         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 286         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 287         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 288         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 289                                  .len = IEEE80211_MAX_DATA_LEN },
 290         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 291         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 292         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 293         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 294         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 295         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 296         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 297         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 300         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 301         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 302         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 303         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 304         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 305         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 306         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 307         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 308         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 309         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 310                                          .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 312                                          .len = IEEE80211_MAX_DATA_LEN },
 313         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 314         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 315         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 316         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 317         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 318         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 319         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 320         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 321         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 322         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 323                                       .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 325         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 326         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 327                 .len = NL80211_HT_CAPABILITY_LEN
 328         },
 329         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 330         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 331         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 332         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 333         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 334         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 335         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 336         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 337         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 338         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 339         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 340         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 341         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 342         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 343         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 344         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 346                 .len = NL80211_VHT_CAPABILITY_LEN,
 347         },
 348         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 349         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 350                                   .len = IEEE80211_MAX_DATA_LEN },
 351         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 352         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 353         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 354         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 355         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
 356         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
 357         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 358         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 359         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 360 };
 361
 362 /* policy for the key attributes */
 363 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 364         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 365         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 366         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 367         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 368         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 369         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 370         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 371         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 372 };
 373
 374 /* policy for the key default flags */
 375 static const struct nla_policy
 376 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 377         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 378         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 379 };
 380
 381 /* policy for WoWLAN attributes */
 382 static const struct nla_policy
 383 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 384         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 385         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 386         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 387         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 388         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 389         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 390         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 391         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 392         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 393 };
 394
 395 static const struct nla_policy
 396 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 397         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 398         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 399         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 400         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 401         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 402         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 403         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 404                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 405         },
 406         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 407                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 408         },
 409         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 410         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 411         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 412 };
 413
 414 /* policy for coalesce rule attributes */
 415 static const struct nla_policy
 416 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 417         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 418         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 419         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 420 };
 421
 422 /* policy for GTK rekey offload attributes */
 423 static const struct nla_policy
 424 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 425         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 426         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 427         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 428 };
 429
 430 static const struct nla_policy
 431 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 432         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 433                                                  .len = IEEE80211_MAX_SSID_LEN },
 434         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 435 };
 436
 437 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 438                                      struct netlink_callback *cb,
 439                                      struct cfg80211_registered_device **rdev,
 440                                      struct wireless_dev **wdev)
 441 {
 442         int err;
 443
 444         rtnl_lock();
 445
 446         if (!cb->args[0]) {
 447                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 448                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 449                                   nl80211_policy);
 450                 if (err)
 451                         goto out_unlock;
 452
 453                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 454                                                    nl80211_fam.attrbuf);
 455                 if (IS_ERR(*wdev)) {
 456                         err = PTR_ERR(*wdev);
 457                         goto out_unlock;
 458                 }
 459                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 460                 /* 0 is the first index - add 1 to parse only once */
 461                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 462                 cb->args[1] = (*wdev)->identifier;
 463         } else {
 464                 /* subtract the 1 again here */
 465                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 466                 struct wireless_dev *tmp;
 467
 468                 if (!wiphy) {
 469                         err = -ENODEV;
 470                         goto out_unlock;
 471                 }
 472                 *rdev = wiphy_to_dev(wiphy);
 473                 *wdev = NULL;
 474
 475                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 476                         if (tmp->identifier == cb->args[1]) {
 477                                 *wdev = tmp;
 478                                 break;
 479                         }
 480                 }
 481
 482                 if (!*wdev) {
 483                         err = -ENODEV;
 484                         goto out_unlock;
 485                 }
 486         }
 487
 488         return 0;
 489  out_unlock:
 490         rtnl_unlock();
 491         return err;
 492 }
 493
 494 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 495 {
 496         rtnl_unlock();
 497 }
 498
 499 /* IE validation */
 500 static bool is_valid_ie_attr(const struct nlattr *attr)
 501 {
 502         const u8 *pos;
 503         int len;
 504
 505         if (!attr)
 506                 return true;
 507
 508         pos = nla_data(attr);
 509         len = nla_len(attr);
 510
 511         while (len) {
 512                 u8 elemlen;
 513
 514                 if (len < 2)
 515                         return false;
 516                 len -= 2;
 517
 518                 elemlen = pos[1];
 519                 if (elemlen > len)
 520                         return false;
 521
 522                 len -= elemlen;
 523                 pos += 2 + elemlen;
 524         }
 525
 526         return true;
 527 }
 528
 529 /* message building helper */
 530 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 531                                    int flags, u8 cmd)
 532 {
 533         /* since there is no private header just add the generic one */
 534         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 535 }
 536
 537 static int nl80211_msg_put_channel(struct sk_buff *msg,
 538                                    struct ieee80211_channel *chan,
 539                                    bool large)
 540 {
 541         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 542                         chan->center_freq))
 543                 goto nla_put_failure;
 544
 545         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 546             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 547                 goto nla_put_failure;
 548         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 549             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 550                 goto nla_put_failure;
 551         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 552             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 553                 goto nla_put_failure;
 554         if (chan->flags & IEEE80211_CHAN_RADAR) {
 555                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 556                         goto nla_put_failure;
 557                 if (large) {
 558                         u32 time;
 559
 560                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 561
 562                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 563                                         chan->dfs_state))
 564                                 goto nla_put_failure;
 565                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 566                                         time))
 567                                 goto nla_put_failure;
 568                 }
 569         }
 570
 571         if (large) {
 572                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 573                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 574                         goto nla_put_failure;
 575                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 576                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 577                         goto nla_put_failure;
 578                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 579                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 580                         goto nla_put_failure;
 581                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 582                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 583                         goto nla_put_failure;
 584         }
 585
 586         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 587                         DBM_TO_MBM(chan->max_power)))
 588                 goto nla_put_failure;
 589
 590         return 0;
 591
 592  nla_put_failure:
 593         return -ENOBUFS;
 594 }
 595
 596 /* netlink command implementations */
 597
 598 struct key_parse {
 599         struct key_params p;
 600         int idx;
 601         int type;
 602         bool def, defmgmt;
 603         bool def_uni, def_multi;
 604 };
 605
 606 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 607 {
 608         struct nlattr *tb[NL80211_KEY_MAX + 1];
 609         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 610                                    nl80211_key_policy);
 611         if (err)
 612                 return err;
 613
 614         k->def = !!tb[NL80211_KEY_DEFAULT];
 615         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 616
 617         if (k->def) {
 618                 k->def_uni = true;
 619                 k->def_multi = true;
 620         }
 621         if (k->defmgmt)
 622                 k->def_multi = true;
 623
 624         if (tb[NL80211_KEY_IDX])
 625                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 626
 627         if (tb[NL80211_KEY_DATA]) {
 628                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 629                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 630         }
 631
 632         if (tb[NL80211_KEY_SEQ]) {
 633                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 634                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 635         }
 636
 637         if (tb[NL80211_KEY_CIPHER])
 638                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 639
 640         if (tb[NL80211_KEY_TYPE]) {
 641                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 642                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 643                         return -EINVAL;
 644         }
 645
 646         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 647                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 648                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 649                                        tb[NL80211_KEY_DEFAULT_TYPES],
 650                                        nl80211_key_default_policy);
 651                 if (err)
 652                         return err;
 653
 654                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 655                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 656         }
 657
 658         return 0;
 659 }
 660
 661 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 662 {
 663         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 664                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 665                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 666         }
 667
 668         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 669                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 670                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 671         }
 672
 673         if (info->attrs[NL80211_ATTR_KEY_IDX])
 674                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 675
 676         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 677                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 678
 679         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 680         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 681
 682         if (k->def) {
 683                 k->def_uni = true;
 684                 k->def_multi = true;
 685         }
 686         if (k->defmgmt)
 687                 k->def_multi = true;
 688
 689         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 690                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 691                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 692                         return -EINVAL;
 693         }
 694
 695         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 696                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 697                 int err = nla_parse_nested(
 698                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 699                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 700                                 nl80211_key_default_policy);
 701                 if (err)
 702                         return err;
 703
 704                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 705                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 706         }
 707
 708         return 0;
 709 }
 710
 711 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 712 {
 713         int err;
 714
 715         memset(k, 0, sizeof(*k));
 716         k->idx = -1;
 717         k->type = -1;
 718
 719         if (info->attrs[NL80211_ATTR_KEY])
 720                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 721         else
 722                 err = nl80211_parse_key_old(info, k);
 723
 724         if (err)
 725                 return err;
 726
 727         if (k->def && k->defmgmt)
 728                 return -EINVAL;
 729
 730         if (k->defmgmt) {
 731                 if (k->def_uni || !k->def_multi)
 732                         return -EINVAL;
 733         }
 734
 735         if (k->idx != -1) {
 736                 if (k->defmgmt) {
 737                         if (k->idx < 4 || k->idx > 5)
 738                                 return -EINVAL;
 739                 } else if (k->def) {
 740                         if (k->idx < 0 || k->idx > 3)
 741                                 return -EINVAL;
 742                 } else {
 743                         if (k->idx < 0 || k->idx > 5)
 744                                 return -EINVAL;
 745                 }
 746         }
 747
 748         return 0;
 749 }
 750
 751 static struct cfg80211_cached_keys *
 752 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 753                        struct nlattr *keys, bool *no_ht)
 754 {
 755         struct key_parse parse;
 756         struct nlattr *key;
 757         struct cfg80211_cached_keys *result;
 758         int rem, err, def = 0;
 759
 760         result = kzalloc(sizeof(*result), GFP_KERNEL);
 761         if (!result)
 762                 return ERR_PTR(-ENOMEM);
 763
 764         result->def = -1;
 765         result->defmgmt = -1;
 766
 767         nla_for_each_nested(key, keys, rem) {
 768                 memset(&parse, 0, sizeof(parse));
 769                 parse.idx = -1;
 770
 771                 err = nl80211_parse_key_new(key, &parse);
 772                 if (err)
 773                         goto error;
 774                 err = -EINVAL;
 775                 if (!parse.p.key)
 776                         goto error;
 777                 if (parse.idx < 0 || parse.idx > 4)
 778                         goto error;
 779                 if (parse.def) {
 780                         if (def)
 781                                 goto error;
 782                         def = 1;
 783                         result->def = parse.idx;
 784                         if (!parse.def_uni || !parse.def_multi)
 785                                 goto error;
 786                 } else if (parse.defmgmt)
 787                         goto error;
 788                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 789                                                      parse.idx, false, NULL);
 790                 if (err)
 791                         goto error;
 792                 result->params[parse.idx].cipher = parse.p.cipher;
 793                 result->params[parse.idx].key_len = parse.p.key_len;
 794                 result->params[parse.idx].key = result->data[parse.idx];
 795                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 796
 797                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 798                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 799                         if (no_ht)
 800                                 *no_ht = true;
 801                 }
 802         }
 803
 804         return result;
 805  error:
 806         kfree(result);
 807         return ERR_PTR(err);
 808 }
 809
 810 static int nl80211_key_allowed(struct wireless_dev *wdev)
 811 {
 812         ASSERT_WDEV_LOCK(wdev);
 813
 814         switch (wdev->iftype) {
 815         case NL80211_IFTYPE_AP:
 816         case NL80211_IFTYPE_AP_VLAN:
 817         case NL80211_IFTYPE_P2P_GO:
 818         case NL80211_IFTYPE_MESH_POINT:
 819                 break;
 820         case NL80211_IFTYPE_ADHOC:
 821         case NL80211_IFTYPE_STATION:
 822         case NL80211_IFTYPE_P2P_CLIENT:
 823                 if (!wdev->current_bss)
 824                         return -ENOLINK;
 825                 break;
 826         default:
 827                 return -EINVAL;
 828         }
 829
 830         return 0;
 831 }
 832
 833 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 834 {
 835         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 836         int i;
 837
 838         if (!nl_modes)
 839                 goto nla_put_failure;
 840
 841         i = 0;
 842         while (ifmodes) {
 843                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 844                         goto nla_put_failure;
 845                 ifmodes >>= 1;
 846                 i++;
 847         }
 848
 849         nla_nest_end(msg, nl_modes);
 850         return 0;
 851
 852 nla_put_failure:
 853         return -ENOBUFS;
 854 }
 855
 856 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 857                                           struct sk_buff *msg,
 858                                           bool large)
 859 {
 860         struct nlattr *nl_combis;
 861         int i, j;
 862
 863         nl_combis = nla_nest_start(msg,
 864                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 865         if (!nl_combis)
 866                 goto nla_put_failure;
 867
 868         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 869                 const struct ieee80211_iface_combination *c;
 870                 struct nlattr *nl_combi, *nl_limits;
 871
 872                 c = &wiphy->iface_combinations[i];
 873
 874                 nl_combi = nla_nest_start(msg, i + 1);
 875                 if (!nl_combi)
 876                         goto nla_put_failure;
 877
 878                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 879                 if (!nl_limits)
 880                         goto nla_put_failure;
 881
 882                 for (j = 0; j < c->n_limits; j++) {
 883                         struct nlattr *nl_limit;
 884
 885                         nl_limit = nla_nest_start(msg, j + 1);
 886                         if (!nl_limit)
 887                                 goto nla_put_failure;
 888                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 889                                         c->limits[j].max))
 890                                 goto nla_put_failure;
 891                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 892                                                 c->limits[j].types))
 893                                 goto nla_put_failure;
 894                         nla_nest_end(msg, nl_limit);
 895                 }
 896
 897                 nla_nest_end(msg, nl_limits);
 898
 899                 if (c->beacon_int_infra_match &&
 900                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 901                         goto nla_put_failure;
 902                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 903                                 c->num_different_channels) ||
 904                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 905                                 c->max_interfaces))
 906                         goto nla_put_failure;
 907                 if (large &&
 908                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 909                                 c->radar_detect_widths))
 910                         goto nla_put_failure;
 911
 912                 nla_nest_end(msg, nl_combi);
 913         }
 914
 915         nla_nest_end(msg, nl_combis);
 916
 917         return 0;
 918 nla_put_failure:
 919         return -ENOBUFS;
 920 }
 921
 922 #ifdef CONFIG_PM
 923 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 924                                         struct sk_buff *msg)
 925 {
 926         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 927         struct nlattr *nl_tcp;
 928
 929         if (!tcp)
 930                 return 0;
 931
 932         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 933         if (!nl_tcp)
 934                 return -ENOBUFS;
 935
 936         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 937                         tcp->data_payload_max))
 938                 return -ENOBUFS;
 939
 940         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 941                         tcp->data_payload_max))
 942                 return -ENOBUFS;
 943
 944         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 945                 return -ENOBUFS;
 946
 947         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 948                                 sizeof(*tcp->tok), tcp->tok))
 949                 return -ENOBUFS;
 950
 951         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 952                         tcp->data_interval_max))
 953                 return -ENOBUFS;
 954
 955         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 956                         tcp->wake_payload_max))
 957                 return -ENOBUFS;
 958
 959         nla_nest_end(msg, nl_tcp);
 960         return 0;
 961 }
 962
 963 static int nl80211_send_wowlan(struct sk_buff *msg,
 964                                struct cfg80211_registered_device *dev,
 965                                bool large)
 966 {
 967         struct nlattr *nl_wowlan;
 968
 969         if (!dev->wiphy.wowlan)
 970                 return 0;
 971
 972         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 973         if (!nl_wowlan)
 974                 return -ENOBUFS;
 975
 976         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
 977              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 978             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
 979              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 980             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 981              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 982             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 983              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 984             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
 985              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
 986             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
 987              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
 988             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
 989              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
 990             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
 991              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
 992                 return -ENOBUFS;
 993
 994         if (dev->wiphy.wowlan->n_patterns) {
 995                 struct nl80211_pattern_support pat = {
 996                         .max_patterns = dev->wiphy.wowlan->n_patterns,
 997                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
 998                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
 999                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1000                 };
1001
1002                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1003                             sizeof(pat), &pat))
1004                         return -ENOBUFS;
1005         }
1006
1007         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1008                 return -ENOBUFS;
1009
1010         nla_nest_end(msg, nl_wowlan);
1011
1012         return 0;
1013 }
1014 #endif
1015
1016 static int nl80211_send_coalesce(struct sk_buff *msg,
1017                                  struct cfg80211_registered_device *dev)
1018 {
1019         struct nl80211_coalesce_rule_support rule;
1020
1021         if (!dev->wiphy.coalesce)
1022                 return 0;
1023
1024         rule.max_rules = dev->wiphy.coalesce->n_rules;
1025         rule.max_delay = dev->wiphy.coalesce->max_delay;
1026         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1027         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1028         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1029         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1030
1031         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1032                 return -ENOBUFS;
1033
1034         return 0;
1035 }
1036
1037 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1038                                       struct ieee80211_supported_band *sband)
1039 {
1040         struct nlattr *nl_rates, *nl_rate;
1041         struct ieee80211_rate *rate;
1042         int i;
1043
1044         /* add HT info */
1045         if (sband->ht_cap.ht_supported &&
1046             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1047                      sizeof(sband->ht_cap.mcs),
1048                      &sband->ht_cap.mcs) ||
1049              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1050                          sband->ht_cap.cap) ||
1051              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1052                         sband->ht_cap.ampdu_factor) ||
1053              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1054                         sband->ht_cap.ampdu_density)))
1055                 return -ENOBUFS;
1056
1057         /* add VHT info */
1058         if (sband->vht_cap.vht_supported &&
1059             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1060                      sizeof(sband->vht_cap.vht_mcs),
1061                      &sband->vht_cap.vht_mcs) ||
1062              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1063                          sband->vht_cap.cap)))
1064                 return -ENOBUFS;
1065
1066         /* add bitrates */
1067         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1068         if (!nl_rates)
1069                 return -ENOBUFS;
1070
1071         for (i = 0; i < sband->n_bitrates; i++) {
1072                 nl_rate = nla_nest_start(msg, i);
1073                 if (!nl_rate)
1074                         return -ENOBUFS;
1075
1076                 rate = &sband->bitrates[i];
1077                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1078                                 rate->bitrate))
1079                         return -ENOBUFS;
1080                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1081                     nla_put_flag(msg,
1082                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1083                         return -ENOBUFS;
1084
1085                 nla_nest_end(msg, nl_rate);
1086         }
1087
1088         nla_nest_end(msg, nl_rates);
1089
1090         return 0;
1091 }
1092
1093 static int
1094 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1095                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1096 {
1097         u16 stypes;
1098         struct nlattr *nl_ftypes, *nl_ifs;
1099         enum nl80211_iftype ift;
1100         int i;
1101
1102         if (!mgmt_stypes)
1103                 return 0;
1104
1105         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1106         if (!nl_ifs)
1107                 return -ENOBUFS;
1108
1109         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1110                 nl_ftypes = nla_nest_start(msg, ift);
1111                 if (!nl_ftypes)
1112                         return -ENOBUFS;
1113                 i = 0;
1114                 stypes = mgmt_stypes[ift].tx;
1115                 while (stypes) {
1116                         if ((stypes & 1) &&
1117                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1118                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1119                                 return -ENOBUFS;
1120                         stypes >>= 1;
1121                         i++;
1122                 }
1123                 nla_nest_end(msg, nl_ftypes);
1124         }
1125
1126         nla_nest_end(msg, nl_ifs);
1127
1128         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1129         if (!nl_ifs)
1130                 return -ENOBUFS;
1131
1132         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1133                 nl_ftypes = nla_nest_start(msg, ift);
1134                 if (!nl_ftypes)
1135                         return -ENOBUFS;
1136                 i = 0;
1137                 stypes = mgmt_stypes[ift].rx;
1138                 while (stypes) {
1139                         if ((stypes & 1) &&
1140                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1141                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1142                                 return -ENOBUFS;
1143                         stypes >>= 1;
1144                         i++;
1145                 }
1146                 nla_nest_end(msg, nl_ftypes);
1147         }
1148         nla_nest_end(msg, nl_ifs);
1149
1150         return 0;
1151 }
1152
1153 struct nl80211_dump_wiphy_state {
1154         s64 filter_wiphy;
1155         long start;
1156         long split_start, band_start, chan_start;
1157         bool split;
1158 };
1159
1160 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1161                               struct sk_buff *msg, u32 portid, u32 seq,
1162                               int flags, struct nl80211_dump_wiphy_state *state)
1163 {
1164         void *hdr;
1165         struct nlattr *nl_bands, *nl_band;
1166         struct nlattr *nl_freqs, *nl_freq;
1167         struct nlattr *nl_cmds;
1168         enum ieee80211_band band;
1169         struct ieee80211_channel *chan;
1170         int i;
1171         const struct ieee80211_txrx_stypes *mgmt_stypes =
1172                                 dev->wiphy.mgmt_stypes;
1173         u32 features;
1174
1175         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1176         if (!hdr)
1177                 return -ENOBUFS;
1178
1179         if (WARN_ON(!state))
1180                 return -EINVAL;
1181
1182         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1183             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1184                            wiphy_name(&dev->wiphy)) ||
1185             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1186                         cfg80211_rdev_list_generation))
1187                 goto nla_put_failure;
1188
1189         switch (state->split_start) {
1190         case 0:
1191                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1192                                dev->wiphy.retry_short) ||
1193                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1194                                dev->wiphy.retry_long) ||
1195                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1196                                 dev->wiphy.frag_threshold) ||
1197                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1198                                 dev->wiphy.rts_threshold) ||
1199                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1200                                dev->wiphy.coverage_class) ||
1201                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1202                                dev->wiphy.max_scan_ssids) ||
1203                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1204                                dev->wiphy.max_sched_scan_ssids) ||
1205                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1206                                 dev->wiphy.max_scan_ie_len) ||
1207                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1208                                 dev->wiphy.max_sched_scan_ie_len) ||
1209                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1210                                dev->wiphy.max_match_sets))
1211                         goto nla_put_failure;
1212
1213                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1214                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1215                         goto nla_put_failure;
1216                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1217                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1218                         goto nla_put_failure;
1219                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1220                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1221                         goto nla_put_failure;
1222                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1223                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1224                         goto nla_put_failure;
1225                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1226                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1227                         goto nla_put_failure;
1228                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1229                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1230                         goto nla_put_failure;
1231                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1232                     nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1233                         goto nla_put_failure;
1234
1235                 state->split_start++;
1236                 if (state->split)
1237                         break;
1238         case 1:
1239                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1240                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1241                             dev->wiphy.cipher_suites))
1242                         goto nla_put_failure;
1243
1244                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1245                                dev->wiphy.max_num_pmkids))
1246                         goto nla_put_failure;
1247
1248                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1249                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1250                         goto nla_put_failure;
1251
1252                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1253                                 dev->wiphy.available_antennas_tx) ||
1254                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1255                                 dev->wiphy.available_antennas_rx))
1256                         goto nla_put_failure;
1257
1258                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1259                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1260                                 dev->wiphy.probe_resp_offload))
1261                         goto nla_put_failure;
1262
1263                 if ((dev->wiphy.available_antennas_tx ||
1264                      dev->wiphy.available_antennas_rx) &&
1265                     dev->ops->get_antenna) {
1266                         u32 tx_ant = 0, rx_ant = 0;
1267                         int res;
1268                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1269                         if (!res) {
1270                                 if (nla_put_u32(msg,
1271                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1272                                                 tx_ant) ||
1273                                     nla_put_u32(msg,
1274                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1275                                                 rx_ant))
1276                                         goto nla_put_failure;
1277                         }
1278                 }
1279
1280                 state->split_start++;
1281                 if (state->split)
1282                         break;
1283         case 2:
1284                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1285                                         dev->wiphy.interface_modes))
1286                                 goto nla_put_failure;
1287                 state->split_start++;
1288                 if (state->split)
1289                         break;
1290         case 3:
1291                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1292                 if (!nl_bands)
1293                         goto nla_put_failure;
1294
1295                 for (band = state->band_start;
1296                      band < IEEE80211_NUM_BANDS; band++) {
1297                         struct ieee80211_supported_band *sband;
1298
1299                         sband = dev->wiphy.bands[band];
1300
1301                         if (!sband)
1302                                 continue;
1303
1304                         nl_band = nla_nest_start(msg, band);
1305                         if (!nl_band)
1306                                 goto nla_put_failure;
1307
1308                         switch (state->chan_start) {
1309                         case 0:
1310                                 if (nl80211_send_band_rateinfo(msg, sband))
1311                                         goto nla_put_failure;
1312                                 state->chan_start++;
1313                                 if (state->split)
1314                                         break;
1315                         default:
1316                                 /* add frequencies */
1317                                 nl_freqs = nla_nest_start(
1318                                         msg, NL80211_BAND_ATTR_FREQS);
1319                                 if (!nl_freqs)
1320                                         goto nla_put_failure;
1321
1322                                 for (i = state->chan_start - 1;
1323                                      i < sband->n_channels;
1324                                      i++) {
1325                                         nl_freq = nla_nest_start(msg, i);
1326                                         if (!nl_freq)
1327                                                 goto nla_put_failure;
1328
1329                                         chan = &sband->channels[i];
1330
1331                                         if (nl80211_msg_put_channel(
1332                                                         msg, chan,
1333                                                         state->split))
1334                                                 goto nla_put_failure;
1335
1336                                         nla_nest_end(msg, nl_freq);
1337                                         if (state->split)
1338                                                 break;
1339                                 }
1340                                 if (i < sband->n_channels)
1341                                         state->chan_start = i + 2;
1342                                 else
1343                                         state->chan_start = 0;
1344                                 nla_nest_end(msg, nl_freqs);
1345                         }
1346
1347                         nla_nest_end(msg, nl_band);
1348
1349                         if (state->split) {
1350                                 /* start again here */
1351                                 if (state->chan_start)
1352                                         band--;
1353                                 break;
1354                         }
1355                 }
1356                 nla_nest_end(msg, nl_bands);
1357
1358                 if (band < IEEE80211_NUM_BANDS)
1359                         state->band_start = band + 1;
1360                 else
1361                         state->band_start = 0;
1362
1363                 /* if bands & channels are done, continue outside */
1364                 if (state->band_start == 0 && state->chan_start == 0)
1365                         state->split_start++;
1366                 if (state->split)
1367                         break;
1368         case 4:
1369                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1370                 if (!nl_cmds)
1371                         goto nla_put_failure;
1372
1373                 i = 0;
1374 #define CMD(op, n)                                                      \
1375                  do {                                                   \
1376                         if (dev->ops->op) {                             \
1377                                 i++;                                    \
1378                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1379                                         goto nla_put_failure;           \
1380                         }                                               \
1381                 } while (0)
1382
1383                 CMD(add_virtual_intf, NEW_INTERFACE);
1384                 CMD(change_virtual_intf, SET_INTERFACE);
1385                 CMD(add_key, NEW_KEY);
1386                 CMD(start_ap, START_AP);
1387                 CMD(add_station, NEW_STATION);
1388                 CMD(add_mpath, NEW_MPATH);
1389                 CMD(update_mesh_config, SET_MESH_CONFIG);
1390                 CMD(change_bss, SET_BSS);
1391                 CMD(auth, AUTHENTICATE);
1392                 CMD(assoc, ASSOCIATE);
1393                 CMD(deauth, DEAUTHENTICATE);
1394                 CMD(disassoc, DISASSOCIATE);
1395                 CMD(join_ibss, JOIN_IBSS);
1396                 CMD(join_mesh, JOIN_MESH);
1397                 CMD(set_pmksa, SET_PMKSA);
1398                 CMD(del_pmksa, DEL_PMKSA);
1399                 CMD(flush_pmksa, FLUSH_PMKSA);
1400                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1401                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1402                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1403                 CMD(mgmt_tx, FRAME);
1404                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1405                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1406                         i++;
1407                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1408                                 goto nla_put_failure;
1409                 }
1410                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1411                     dev->ops->join_mesh) {
1412                         i++;
1413                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1414                                 goto nla_put_failure;
1415                 }
1416                 CMD(set_wds_peer, SET_WDS_PEER);
1417                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1418                         CMD(tdls_mgmt, TDLS_MGMT);
1419                         CMD(tdls_oper, TDLS_OPER);
1420                 }
1421                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1422                         CMD(sched_scan_start, START_SCHED_SCAN);
1423                 CMD(probe_client, PROBE_CLIENT);
1424                 CMD(set_noack_map, SET_NOACK_MAP);
1425                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1426                         i++;
1427                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1428                                 goto nla_put_failure;
1429                 }
1430                 CMD(start_p2p_device, START_P2P_DEVICE);
1431                 CMD(set_mcast_rate, SET_MCAST_RATE);
1432                 if (state->split) {
1433                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1434                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1435                         if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1436                                 CMD(channel_switch, CHANNEL_SWITCH);
1437                 }
1438
1439 #ifdef CONFIG_NL80211_TESTMODE
1440                 CMD(testmode_cmd, TESTMODE);
1441 #endif
1442
1443 #undef CMD
1444
1445                 if (dev->ops->connect || dev->ops->auth) {
1446                         i++;
1447                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1448                                 goto nla_put_failure;
1449                 }
1450
1451                 if (dev->ops->disconnect || dev->ops->deauth) {
1452                         i++;
1453                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1454                                 goto nla_put_failure;
1455                 }
1456
1457                 nla_nest_end(msg, nl_cmds);
1458                 state->split_start++;
1459                 if (state->split)
1460                         break;
1461         case 5:
1462                 if (dev->ops->remain_on_channel &&
1463                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1464                     nla_put_u32(msg,
1465                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1466                                 dev->wiphy.max_remain_on_channel_duration))
1467                         goto nla_put_failure;
1468
1469                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1470                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1471                         goto nla_put_failure;
1472
1473                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1474                         goto nla_put_failure;
1475                 state->split_start++;
1476                 if (state->split)
1477                         break;
1478         case 6:
1479 #ifdef CONFIG_PM
1480                 if (nl80211_send_wowlan(msg, dev, state->split))
1481                         goto nla_put_failure;
1482                 state->split_start++;
1483                 if (state->split)
1484                         break;
1485 #else
1486                 state->split_start++;
1487 #endif
1488         case 7:
1489                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1490                                         dev->wiphy.software_iftypes))
1491                         goto nla_put_failure;
1492
1493                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1494                                                    state->split))
1495                         goto nla_put_failure;
1496
1497                 state->split_start++;
1498                 if (state->split)
1499                         break;
1500         case 8:
1501                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1502                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1503                                 dev->wiphy.ap_sme_capa))
1504                         goto nla_put_failure;
1505
1506                 features = dev->wiphy.features;
1507                 /*
1508                  * We can only add the per-channel limit information if the
1509                  * dump is split, otherwise it makes it too big. Therefore
1510                  * only advertise it in that case.
1511                  */
1512                 if (state->split)
1513                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1514                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1515                         goto nla_put_failure;
1516
1517                 if (dev->wiphy.ht_capa_mod_mask &&
1518                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1519                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1520                             dev->wiphy.ht_capa_mod_mask))
1521                         goto nla_put_failure;
1522
1523                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1524                     dev->wiphy.max_acl_mac_addrs &&
1525                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1526                                 dev->wiphy.max_acl_mac_addrs))
1527                         goto nla_put_failure;
1528
1529                 /*
1530                  * Any information below this point is only available to
1531                  * applications that can deal with it being split. This
1532                  * helps ensure that newly added capabilities don't break
1533                  * older tools by overrunning their buffers.
1534                  *
1535                  * We still increment split_start so that in the split
1536                  * case we'll continue with more data in the next round,
1537                  * but break unconditionally so unsplit data stops here.
1538                  */
1539                 state->split_start++;
1540                 break;
1541         case 9:
1542                 if (dev->wiphy.extended_capabilities &&
1543                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1544                              dev->wiphy.extended_capabilities_len,
1545                              dev->wiphy.extended_capabilities) ||
1546                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1547                              dev->wiphy.extended_capabilities_len,
1548                              dev->wiphy.extended_capabilities_mask)))
1549                         goto nla_put_failure;
1550
1551                 if (dev->wiphy.vht_capa_mod_mask &&
1552                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1553                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1554                             dev->wiphy.vht_capa_mod_mask))
1555                         goto nla_put_failure;
1556
1557                 state->split_start++;
1558                 break;
1559         case 10:
1560                 if (nl80211_send_coalesce(msg, dev))
1561                         goto nla_put_failure;
1562
1563                 /* done */
1564                 state->split_start = 0;
1565                 break;
1566         }
1567         return genlmsg_end(msg, hdr);
1568
1569  nla_put_failure:
1570         genlmsg_cancel(msg, hdr);
1571         return -EMSGSIZE;
1572 }
1573
1574 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1575                                     struct netlink_callback *cb,
1576                                     struct nl80211_dump_wiphy_state *state)
1577 {
1578         struct nlattr **tb = nl80211_fam.attrbuf;
1579         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1580                               tb, nl80211_fam.maxattr, nl80211_policy);
1581         /* ignore parse errors for backward compatibility */
1582         if (ret)
1583                 return 0;
1584
1585         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1586         if (tb[NL80211_ATTR_WIPHY])
1587                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1588         if (tb[NL80211_ATTR_WDEV])
1589                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1590         if (tb[NL80211_ATTR_IFINDEX]) {
1591                 struct net_device *netdev;
1592                 struct cfg80211_registered_device *rdev;
1593                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1594
1595                 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1596                 if (!netdev)
1597                         return -ENODEV;
1598                 if (netdev->ieee80211_ptr) {
1599                         rdev = wiphy_to_dev(
1600                                 netdev->ieee80211_ptr->wiphy);
1601                         state->filter_wiphy = rdev->wiphy_idx;
1602                 }
1603                 dev_put(netdev);
1604         }
1605
1606         return 0;
1607 }
1608
1609 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1610 {
1611         int idx = 0, ret;
1612         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1613         struct cfg80211_registered_device *dev;
1614
1615         rtnl_lock();
1616         if (!state) {
1617                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1618                 if (!state) {
1619                         rtnl_unlock();
1620                         return -ENOMEM;
1621                 }
1622                 state->filter_wiphy = -1;
1623                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1624                 if (ret) {
1625                         kfree(state);
1626                         rtnl_unlock();
1627                         return ret;
1628                 }
1629                 cb->args[0] = (long)state;
1630         }
1631
1632         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1633                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1634                         continue;
1635                 if (++idx <= state->start)
1636                         continue;
1637                 if (state->filter_wiphy != -1 &&
1638                     state->filter_wiphy != dev->wiphy_idx)
1639                         continue;
1640                 /* attempt to fit multiple wiphy data chunks into the skb */
1641                 do {
1642                         ret = nl80211_send_wiphy(dev, skb,
1643                                                  NETLINK_CB(cb->skb).portid,
1644                                                  cb->nlh->nlmsg_seq,
1645                                                  NLM_F_MULTI, state);
1646                         if (ret < 0) {
1647                                 /*
1648                                  * If sending the wiphy data didn't fit (ENOBUFS
1649                                  * or EMSGSIZE returned), this SKB is still
1650                                  * empty (so it's not too big because another
1651                                  * wiphy dataset is already in the skb) and
1652                                  * we've not tried to adjust the dump allocation
1653                                  * yet ... then adjust the alloc size to be
1654                                  * bigger, and return 1 but with the empty skb.
1655                                  * This results in an empty message being RX'ed
1656                                  * in userspace, but that is ignored.
1657                                  *
1658                                  * We can then retry with the larger buffer.
1659                                  */
1660                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1661                                     !skb->len &&
1662                                     cb->min_dump_alloc < 4096) {
1663                                         cb->min_dump_alloc = 4096;
1664                                         rtnl_unlock();
1665                                         return 1;
1666                                 }
1667                                 idx--;
1668                                 break;
1669                         }
1670                 } while (state->split_start > 0);
1671                 break;
1672         }
1673         rtnl_unlock();
1674
1675         state->start = idx;
1676
1677         return skb->len;
1678 }
1679
1680 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1681 {
1682         kfree((void *)cb->args[0]);
1683         return 0;
1684 }
1685
1686 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1687 {
1688         struct sk_buff *msg;
1689         struct cfg80211_registered_device *dev = info->user_ptr[0];
1690         struct nl80211_dump_wiphy_state state = {};
1691
1692         msg = nlmsg_new(4096, GFP_KERNEL);
1693         if (!msg)
1694                 return -ENOMEM;
1695
1696         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1697                                &state) < 0) {
1698                 nlmsg_free(msg);
1699                 return -ENOBUFS;
1700         }
1701
1702         return genlmsg_reply(msg, info);
1703 }
1704
1705 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1706         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1707         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1708         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1709         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1710         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1711 };
1712
1713 static int parse_txq_params(struct nlattr *tb[],
1714                             struct ieee80211_txq_params *txq_params)
1715 {
1716         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1717             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1718             !tb[NL80211_TXQ_ATTR_AIFS])
1719                 return -EINVAL;
1720
1721         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1722         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1723         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1724         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1725         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1726
1727         if (txq_params->ac >= NL80211_NUM_ACS)
1728                 return -EINVAL;
1729
1730         return 0;
1731 }
1732
1733 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1734 {
1735         /*
1736          * You can only set the channel explicitly for WDS interfaces,
1737          * all others have their channel managed via their respective
1738          * "establish a connection" command (connect, join, ...)
1739          *
1740          * For AP/GO and mesh mode, the channel can be set with the
1741          * channel userspace API, but is only stored and passed to the
1742          * low-level driver when the AP starts or the mesh is joined.
1743          * This is for backward compatibility, userspace can also give
1744          * the channel in the start-ap or join-mesh commands instead.
1745          *
1746          * Monitors are special as they are normally slaved to
1747          * whatever else is going on, so they have their own special
1748          * operation to set the monitor channel if possible.
1749          */
1750         return !wdev ||
1751                 wdev->iftype == NL80211_IFTYPE_AP ||
1752                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1753                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1754                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1755 }
1756
1757 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1758                                  struct genl_info *info,
1759                                  struct cfg80211_chan_def *chandef)
1760 {
1761         u32 control_freq;
1762
1763         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1764                 return -EINVAL;
1765
1766         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1767
1768         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1769         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1770         chandef->center_freq1 = control_freq;
1771         chandef->center_freq2 = 0;
1772
1773         /* Primary channel not allowed */
1774         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1775                 return -EINVAL;
1776
1777         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1778                 enum nl80211_channel_type chantype;
1779
1780                 chantype = nla_get_u32(
1781                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1782
1783                 switch (chantype) {
1784                 case NL80211_CHAN_NO_HT:
1785                 case NL80211_CHAN_HT20:
1786                 case NL80211_CHAN_HT40PLUS:
1787                 case NL80211_CHAN_HT40MINUS:
1788                         cfg80211_chandef_create(chandef, chandef->chan,
1789                                                 chantype);
1790                         break;
1791                 default:
1792                         return -EINVAL;
1793                 }
1794         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1795                 chandef->width =
1796                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1797                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1798                         chandef->center_freq1 =
1799                                 nla_get_u32(
1800                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1801                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1802                         chandef->center_freq2 =
1803                                 nla_get_u32(
1804                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1805         }
1806
1807         if (!cfg80211_chandef_valid(chandef))
1808                 return -EINVAL;
1809
1810         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1811                                      IEEE80211_CHAN_DISABLED))
1812                 return -EINVAL;
1813
1814         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1815              chandef->width == NL80211_CHAN_WIDTH_10) &&
1816             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1817                 return -EINVAL;
1818
1819         return 0;
1820 }
1821
1822 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1823                                  struct wireless_dev *wdev,
1824                                  struct genl_info *info)
1825 {
1826         struct cfg80211_chan_def chandef;
1827         int result;
1828         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1829
1830         if (wdev)
1831                 iftype = wdev->iftype;
1832
1833         if (!nl80211_can_set_dev_channel(wdev))
1834                 return -EOPNOTSUPP;
1835
1836         result = nl80211_parse_chandef(rdev, info, &chandef);
1837         if (result)
1838                 return result;
1839
1840         switch (iftype) {
1841         case NL80211_IFTYPE_AP:
1842         case NL80211_IFTYPE_P2P_GO:
1843                 if (wdev->beacon_interval) {
1844                         result = -EBUSY;
1845                         break;
1846                 }
1847                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1848                         result = -EINVAL;
1849                         break;
1850                 }
1851                 wdev->preset_chandef = chandef;
1852                 result = 0;
1853                 break;
1854         case NL80211_IFTYPE_MESH_POINT:
1855                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1856                 break;
1857         case NL80211_IFTYPE_MONITOR:
1858                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1859                 break;
1860         default:
1861                 result = -EINVAL;
1862         }
1863
1864         return result;
1865 }
1866
1867 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1868 {
1869         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1870         struct net_device *netdev = info->user_ptr[1];
1871
1872         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1873 }
1874
1875 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1876 {
1877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1878         struct net_device *dev = info->user_ptr[1];
1879         struct wireless_dev *wdev = dev->ieee80211_ptr;
1880         const u8 *bssid;
1881
1882         if (!info->attrs[NL80211_ATTR_MAC])
1883                 return -EINVAL;
1884
1885         if (netif_running(dev))
1886                 return -EBUSY;
1887
1888         if (!rdev->ops->set_wds_peer)
1889                 return -EOPNOTSUPP;
1890
1891         if (wdev->iftype != NL80211_IFTYPE_WDS)
1892                 return -EOPNOTSUPP;
1893
1894         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1895         return rdev_set_wds_peer(rdev, dev, bssid);
1896 }
1897
1898
1899 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1900 {
1901         struct cfg80211_registered_device *rdev;
1902         struct net_device *netdev = NULL;
1903         struct wireless_dev *wdev;
1904         int result = 0, rem_txq_params = 0;
1905         struct nlattr *nl_txq_params;
1906         u32 changed;
1907         u8 retry_short = 0, retry_long = 0;
1908         u32 frag_threshold = 0, rts_threshold = 0;
1909         u8 coverage_class = 0;
1910
1911         ASSERT_RTNL();
1912
1913         /*
1914          * Try to find the wiphy and netdev. Normally this
1915          * function shouldn't need the netdev, but this is
1916          * done for backward compatibility -- previously
1917          * setting the channel was done per wiphy, but now
1918          * it is per netdev. Previous userland like hostapd
1919          * also passed a netdev to set_wiphy, so that it is
1920          * possible to let that go to the right netdev!
1921          */
1922
1923         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1924                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1925
1926                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1927                 if (netdev && netdev->ieee80211_ptr)
1928                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1929                 else
1930                         netdev = NULL;
1931         }
1932
1933         if (!netdev) {
1934                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1935                                                   info->attrs);
1936                 if (IS_ERR(rdev))
1937                         return PTR_ERR(rdev);
1938                 wdev = NULL;
1939                 netdev = NULL;
1940                 result = 0;
1941         } else
1942                 wdev = netdev->ieee80211_ptr;
1943
1944         /*
1945          * end workaround code, by now the rdev is available
1946          * and locked, and wdev may or may not be NULL.
1947          */
1948
1949         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1950                 result = cfg80211_dev_rename(
1951                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1952
1953         if (result)
1954                 goto bad_res;
1955
1956         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1957                 struct ieee80211_txq_params txq_params;
1958                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1959
1960                 if (!rdev->ops->set_txq_params) {
1961                         result = -EOPNOTSUPP;
1962                         goto bad_res;
1963                 }
1964
1965                 if (!netdev) {
1966                         result = -EINVAL;
1967                         goto bad_res;
1968                 }
1969
1970                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1971                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1972                         result = -EINVAL;
1973                         goto bad_res;
1974                 }
1975
1976                 if (!netif_running(netdev)) {
1977                         result = -ENETDOWN;
1978                         goto bad_res;
1979                 }
1980
1981                 nla_for_each_nested(nl_txq_params,
1982                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1983                                     rem_txq_params) {
1984                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1985                                   nla_data(nl_txq_params),
1986                                   nla_len(nl_txq_params),
1987                                   txq_params_policy);
1988                         result = parse_txq_params(tb, &txq_params);
1989                         if (result)
1990                                 goto bad_res;
1991
1992                         result = rdev_set_txq_params(rdev, netdev,
1993                                                      &txq_params);
1994                         if (result)
1995                                 goto bad_res;
1996                 }
1997         }
1998
1999         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2000                 result = __nl80211_set_channel(rdev,
2001                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2002                                 info);
2003                 if (result)
2004                         goto bad_res;
2005         }
2006
2007         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2008                 struct wireless_dev *txp_wdev = wdev;
2009                 enum nl80211_tx_power_setting type;
2010                 int idx, mbm = 0;
2011
2012                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2013                         txp_wdev = NULL;
2014
2015                 if (!rdev->ops->set_tx_power) {
2016                         result = -EOPNOTSUPP;
2017                         goto bad_res;
2018                 }
2019
2020                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2021                 type = nla_get_u32(info->attrs[idx]);
2022
2023                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2024                     (type != NL80211_TX_POWER_AUTOMATIC)) {
2025                         result = -EINVAL;
2026                         goto bad_res;
2027                 }
2028
2029                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2030                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2031                         mbm = nla_get_u32(info->attrs[idx]);
2032                 }
2033
2034                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2035                 if (result)
2036                         goto bad_res;
2037         }
2038
2039         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2040             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2041                 u32 tx_ant, rx_ant;
2042                 if ((!rdev->wiphy.available_antennas_tx &&
2043                      !rdev->wiphy.available_antennas_rx) ||
2044                     !rdev->ops->set_antenna) {
2045                         result = -EOPNOTSUPP;
2046                         goto bad_res;
2047                 }
2048
2049                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2050                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2051
2052                 /* reject antenna configurations which don't match the
2053                  * available antenna masks, except for the "all" mask */
2054                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2055                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2056                         result = -EINVAL;
2057                         goto bad_res;
2058                 }
2059
2060                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2061                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2062
2063                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2064                 if (result)
2065                         goto bad_res;
2066         }
2067
2068         changed = 0;
2069
2070         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2071                 retry_short = nla_get_u8(
2072                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2073                 if (retry_short == 0) {
2074                         result = -EINVAL;
2075                         goto bad_res;
2076                 }
2077                 changed |= WIPHY_PARAM_RETRY_SHORT;
2078         }
2079
2080         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2081                 retry_long = nla_get_u8(
2082                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2083                 if (retry_long == 0) {
2084                         result = -EINVAL;
2085                         goto bad_res;
2086                 }
2087                 changed |= WIPHY_PARAM_RETRY_LONG;
2088         }
2089
2090         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2091                 frag_threshold = nla_get_u32(
2092                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2093                 if (frag_threshold < 256) {
2094                         result = -EINVAL;
2095                         goto bad_res;
2096                 }
2097                 if (frag_threshold != (u32) -1) {
2098                         /*
2099                          * Fragments (apart from the last one) are required to
2100                          * have even length. Make the fragmentation code
2101                          * simpler by stripping LSB should someone try to use
2102                          * odd threshold value.
2103                          */
2104                         frag_threshold &= ~0x1;
2105                 }
2106                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2107         }
2108
2109         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2110                 rts_threshold = nla_get_u32(
2111                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2112                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2113         }
2114
2115         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2116                 coverage_class = nla_get_u8(
2117                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2118                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2119         }
2120
2121         if (changed) {
2122                 u8 old_retry_short, old_retry_long;
2123                 u32 old_frag_threshold, old_rts_threshold;
2124                 u8 old_coverage_class;
2125
2126                 if (!rdev->ops->set_wiphy_params) {
2127                         result = -EOPNOTSUPP;
2128                         goto bad_res;
2129                 }
2130
2131                 old_retry_short = rdev->wiphy.retry_short;
2132                 old_retry_long = rdev->wiphy.retry_long;
2133                 old_frag_threshold = rdev->wiphy.frag_threshold;
2134                 old_rts_threshold = rdev->wiphy.rts_threshold;
2135                 old_coverage_class = rdev->wiphy.coverage_class;
2136
2137                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2138                         rdev->wiphy.retry_short = retry_short;
2139                 if (changed & WIPHY_PARAM_RETRY_LONG)
2140                         rdev->wiphy.retry_long = retry_long;
2141                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2142                         rdev->wiphy.frag_threshold = frag_threshold;
2143                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2144                         rdev->wiphy.rts_threshold = rts_threshold;
2145                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2146                         rdev->wiphy.coverage_class = coverage_class;
2147
2148                 result = rdev_set_wiphy_params(rdev, changed);
2149                 if (result) {
2150                         rdev->wiphy.retry_short = old_retry_short;
2151                         rdev->wiphy.retry_long = old_retry_long;
2152                         rdev->wiphy.frag_threshold = old_frag_threshold;
2153                         rdev->wiphy.rts_threshold = old_rts_threshold;
2154                         rdev->wiphy.coverage_class = old_coverage_class;
2155                 }
2156         }
2157
2158  bad_res:
2159         if (netdev)
2160                 dev_put(netdev);
2161         return result;
2162 }
2163
2164 static inline u64 wdev_id(struct wireless_dev *wdev)
2165 {
2166         return (u64)wdev->identifier |
2167                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2168 }
2169
2170 static int nl80211_send_chandef(struct sk_buff *msg,
2171                                  struct cfg80211_chan_def *chandef)
2172 {
2173         WARN_ON(!cfg80211_chandef_valid(chandef));
2174
2175         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2176                         chandef->chan->center_freq))
2177                 return -ENOBUFS;
2178         switch (chandef->width) {
2179         case NL80211_CHAN_WIDTH_20_NOHT:
2180         case NL80211_CHAN_WIDTH_20:
2181         case NL80211_CHAN_WIDTH_40:
2182                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2183                                 cfg80211_get_chandef_type(chandef)))
2184                         return -ENOBUFS;
2185                 break;
2186         default:
2187                 break;
2188         }
2189         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2190                 return -ENOBUFS;
2191         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2192                 return -ENOBUFS;
2193         if (chandef->center_freq2 &&
2194             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2195                 return -ENOBUFS;
2196         return 0;
2197 }
2198
2199 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2200                               struct cfg80211_registered_device *rdev,
2201                               struct wireless_dev *wdev)
2202 {
2203         struct net_device *dev = wdev->netdev;
2204         void *hdr;
2205
2206         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2207         if (!hdr)
2208                 return -1;
2209
2210         if (dev &&
2211             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2212              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2213                 goto nla_put_failure;
2214
2215         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2216             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2217             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2218             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2219             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2220                         rdev->devlist_generation ^
2221                         (cfg80211_rdev_list_generation << 2)))
2222                 goto nla_put_failure;
2223
2224         if (rdev->ops->get_channel) {
2225                 int ret;
2226                 struct cfg80211_chan_def chandef;
2227
2228                 ret = rdev_get_channel(rdev, wdev, &chandef);
2229                 if (ret == 0) {
2230                         if (nl80211_send_chandef(msg, &chandef))
2231                                 goto nla_put_failure;
2232                 }
2233         }
2234
2235         if (wdev->ssid_len) {
2236                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2237                         goto nla_put_failure;
2238         }
2239
2240         return genlmsg_end(msg, hdr);
2241
2242  nla_put_failure:
2243         genlmsg_cancel(msg, hdr);
2244         return -EMSGSIZE;
2245 }
2246
2247 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2248 {
2249         int wp_idx = 0;
2250         int if_idx = 0;
2251         int wp_start = cb->args[0];
2252         int if_start = cb->args[1];
2253         struct cfg80211_registered_device *rdev;
2254         struct wireless_dev *wdev;
2255
2256         rtnl_lock();
2257         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2258                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2259                         continue;
2260                 if (wp_idx < wp_start) {
2261                         wp_idx++;
2262                         continue;
2263                 }
2264                 if_idx = 0;
2265
2266                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2267                         if (if_idx < if_start) {
2268                                 if_idx++;
2269                                 continue;
2270                         }
2271                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2272                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2273                                                rdev, wdev) < 0) {
2274                                 goto out;
2275                         }
2276                         if_idx++;
2277                 }
2278
2279                 wp_idx++;
2280         }
2281  out:
2282         rtnl_unlock();
2283
2284         cb->args[0] = wp_idx;
2285         cb->args[1] = if_idx;
2286
2287         return skb->len;
2288 }
2289
2290 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2291 {
2292         struct sk_buff *msg;
2293         struct cfg80211_registered_device *dev = info->user_ptr[0];
2294         struct wireless_dev *wdev = info->user_ptr[1];
2295
2296         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2297         if (!msg)
2298                 return -ENOMEM;
2299
2300         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2301                                dev, wdev) < 0) {
2302                 nlmsg_free(msg);
2303                 return -ENOBUFS;
2304         }
2305
2306         return genlmsg_reply(msg, info);
2307 }
2308
2309 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2310         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2311         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2312         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2313         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2314         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2315         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2316 };
2317
2318 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2319 {
2320         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2321         int flag;
2322
2323         *mntrflags = 0;
2324
2325         if (!nla)
2326                 return -EINVAL;
2327
2328         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2329                              nla, mntr_flags_policy))
2330                 return -EINVAL;
2331
2332         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2333                 if (flags[flag])
2334                         *mntrflags |= (1<<flag);
2335
2336         return 0;
2337 }
2338
2339 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2340                                struct net_device *netdev, u8 use_4addr,
2341                                enum nl80211_iftype iftype)
2342 {
2343         if (!use_4addr) {
2344                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2345                         return -EBUSY;
2346                 return 0;
2347         }
2348
2349         switch (iftype) {
2350         case NL80211_IFTYPE_AP_VLAN:
2351                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2352                         return 0;
2353                 break;
2354         case NL80211_IFTYPE_STATION:
2355                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2356                         return 0;
2357                 break;
2358         default:
2359                 break;
2360         }
2361
2362         return -EOPNOTSUPP;
2363 }
2364
2365 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2366 {
2367         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2368         struct vif_params params;
2369         int err;
2370         enum nl80211_iftype otype, ntype;
2371         struct net_device *dev = info->user_ptr[1];
2372         u32 _flags, *flags = NULL;
2373         bool change = false;
2374
2375         memset(&params, 0, sizeof(params));
2376
2377         otype = ntype = dev->ieee80211_ptr->iftype;
2378
2379         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2380                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2381                 if (otype != ntype)
2382                         change = true;
2383                 if (ntype > NL80211_IFTYPE_MAX)
2384                         return -EINVAL;
2385         }
2386
2387         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2388                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2389
2390                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2391                         return -EINVAL;
2392                 if (netif_running(dev))
2393                         return -EBUSY;
2394
2395                 wdev_lock(wdev);
2396                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2397                              IEEE80211_MAX_MESH_ID_LEN);
2398                 wdev->mesh_id_up_len =
2399                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2400                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2401                        wdev->mesh_id_up_len);
2402                 wdev_unlock(wdev);
2403         }
2404
2405         if (info->attrs[NL80211_ATTR_4ADDR]) {
2406                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2407                 change = true;
2408                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2409                 if (err)
2410                         return err;
2411         } else {
2412                 params.use_4addr = -1;
2413         }
2414
2415         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2416                 if (ntype != NL80211_IFTYPE_MONITOR)
2417                         return -EINVAL;
2418                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2419                                           &_flags);
2420                 if (err)
2421                         return err;
2422
2423                 flags = &_flags;
2424                 change = true;
2425         }
2426
2427         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2428             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2429                 return -EOPNOTSUPP;
2430
2431         if (change)
2432                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2433         else
2434                 err = 0;
2435
2436         if (!err && params.use_4addr != -1)
2437                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2438
2439         return err;
2440 }
2441
2442 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2443 {
2444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2445         struct vif_params params;
2446         struct wireless_dev *wdev;
2447         struct sk_buff *msg;
2448         int err;
2449         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2450         u32 flags;
2451
2452         memset(&params, 0, sizeof(params));
2453
2454         if (!info->attrs[NL80211_ATTR_IFNAME])
2455                 return -EINVAL;
2456
2457         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2458                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2459                 if (type > NL80211_IFTYPE_MAX)
2460                         return -EINVAL;
2461         }
2462
2463         if (!rdev->ops->add_virtual_intf ||
2464             !(rdev->wiphy.interface_modes & (1 << type)))
2465                 return -EOPNOTSUPP;
2466
2467         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2468                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2469                            ETH_ALEN);
2470                 if (!is_valid_ether_addr(params.macaddr))
2471                         return -EADDRNOTAVAIL;
2472         }
2473
2474         if (info->attrs[NL80211_ATTR_4ADDR]) {
2475                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2476                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2477                 if (err)
2478                         return err;
2479         }
2480
2481         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2482         if (!msg)
2483                 return -ENOMEM;
2484
2485         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2486                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2487                                   &flags);
2488
2489         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2490             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2491                 return -EOPNOTSUPP;
2492
2493         wdev = rdev_add_virtual_intf(rdev,
2494                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2495                                 type, err ? NULL : &flags, &params);
2496         if (IS_ERR(wdev)) {
2497                 nlmsg_free(msg);
2498                 return PTR_ERR(wdev);
2499         }
2500
2501         switch (type) {
2502         case NL80211_IFTYPE_MESH_POINT:
2503                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2504                         break;
2505                 wdev_lock(wdev);
2506                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2507                              IEEE80211_MAX_MESH_ID_LEN);
2508                 wdev->mesh_id_up_len =
2509                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2510                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2511                        wdev->mesh_id_up_len);
2512                 wdev_unlock(wdev);
2513                 break;
2514         case NL80211_IFTYPE_P2P_DEVICE:
2515                 /*
2516                  * P2P Device doesn't have a netdev, so doesn't go
2517                  * through the netdev notifier and must be added here
2518                  */
2519                 mutex_init(&wdev->mtx);
2520                 INIT_LIST_HEAD(&wdev->event_list);
2521                 spin_lock_init(&wdev->event_lock);
2522                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2523                 spin_lock_init(&wdev->mgmt_registrations_lock);
2524
2525                 wdev->identifier = ++rdev->wdev_id;
2526                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2527                 rdev->devlist_generation++;
2528                 break;
2529         default:
2530                 break;
2531         }
2532
2533         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2534                                rdev, wdev) < 0) {
2535                 nlmsg_free(msg);
2536                 return -ENOBUFS;
2537         }
2538
2539         return genlmsg_reply(msg, info);
2540 }
2541
2542 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2543 {
2544         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2545         struct wireless_dev *wdev = info->user_ptr[1];
2546
2547         if (!rdev->ops->del_virtual_intf)
2548                 return -EOPNOTSUPP;
2549
2550         /*
2551          * If we remove a wireless device without a netdev then clear
2552          * user_ptr[1] so that nl80211_post_doit won't dereference it
2553          * to check if it needs to do dev_put(). Otherwise it crashes
2554          * since the wdev has been freed, unlike with a netdev where
2555          * we need the dev_put() for the netdev to really be freed.
2556          */
2557         if (!wdev->netdev)
2558                 info->user_ptr[1] = NULL;
2559
2560         return rdev_del_virtual_intf(rdev, wdev);
2561 }
2562
2563 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2564 {
2565         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2566         struct net_device *dev = info->user_ptr[1];
2567         u16 noack_map;
2568
2569         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2570                 return -EINVAL;
2571
2572         if (!rdev->ops->set_noack_map)
2573                 return -EOPNOTSUPP;
2574
2575         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2576
2577         return rdev_set_noack_map(rdev, dev, noack_map);
2578 }
2579
2580 struct get_key_cookie {
2581         struct sk_buff *msg;
2582         int error;
2583         int idx;
2584 };
2585
2586 static void get_key_callback(void *c, struct key_params *params)
2587 {
2588         struct nlattr *key;
2589         struct get_key_cookie *cookie = c;
2590
2591         if ((params->key &&
2592              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2593                      params->key_len, params->key)) ||
2594             (params->seq &&
2595              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2596                      params->seq_len, params->seq)) ||
2597             (params->cipher &&
2598              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2599                          params->cipher)))
2600                 goto nla_put_failure;
2601
2602         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2603         if (!key)
2604                 goto nla_put_failure;
2605
2606         if ((params->key &&
2607              nla_put(cookie->msg, NL80211_KEY_DATA,
2608                      params->key_len, params->key)) ||
2609             (params->seq &&
2610              nla_put(cookie->msg, NL80211_KEY_SEQ,
2611                      params->seq_len, params->seq)) ||
2612             (params->cipher &&
2613              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2614                          params->cipher)))
2615                 goto nla_put_failure;
2616
2617         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2618                 goto nla_put_failure;
2619
2620         nla_nest_end(cookie->msg, key);
2621
2622         return;
2623  nla_put_failure:
2624         cookie->error = 1;
2625 }
2626
2627 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2628 {
2629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2630         int err;
2631         struct net_device *dev = info->user_ptr[1];
2632         u8 key_idx = 0;
2633         const u8 *mac_addr = NULL;
2634         bool pairwise;
2635         struct get_key_cookie cookie = {
2636                 .error = 0,
2637         };
2638         void *hdr;
2639         struct sk_buff *msg;
2640
2641         if (info->attrs[NL80211_ATTR_KEY_IDX])
2642                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2643
2644         if (key_idx > 5)
2645                 return -EINVAL;
2646
2647         if (info->attrs[NL80211_ATTR_MAC])
2648                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2649
2650         pairwise = !!mac_addr;
2651         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2652                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2653                 if (kt >= NUM_NL80211_KEYTYPES)
2654                         return -EINVAL;
2655                 if (kt != NL80211_KEYTYPE_GROUP &&
2656                     kt != NL80211_KEYTYPE_PAIRWISE)
2657                         return -EINVAL;
2658                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2659         }
2660
2661         if (!rdev->ops->get_key)
2662                 return -EOPNOTSUPP;
2663
2664         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2665         if (!msg)
2666                 return -ENOMEM;
2667
2668         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2669                              NL80211_CMD_NEW_KEY);
2670         if (!hdr)
2671                 return -ENOBUFS;
2672
2673         cookie.msg = msg;
2674         cookie.idx = key_idx;
2675
2676         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2677             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2678                 goto nla_put_failure;
2679         if (mac_addr &&
2680             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2681                 goto nla_put_failure;
2682
2683         if (pairwise && mac_addr &&
2684             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2685                 return -ENOENT;
2686
2687         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2688                            get_key_callback);
2689
2690         if (err)
2691                 goto free_msg;
2692
2693         if (cookie.error)
2694                 goto nla_put_failure;
2695
2696         genlmsg_end(msg, hdr);
2697         return genlmsg_reply(msg, info);
2698
2699  nla_put_failure:
2700         err = -ENOBUFS;
2701  free_msg:
2702         nlmsg_free(msg);
2703         return err;
2704 }
2705
2706 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2707 {
2708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2709         struct key_parse key;
2710         int err;
2711         struct net_device *dev = info->user_ptr[1];
2712
2713         err = nl80211_parse_key(info, &key);
2714         if (err)
2715                 return err;
2716
2717         if (key.idx < 0)
2718                 return -EINVAL;
2719
2720         /* only support setting default key */
2721         if (!key.def && !key.defmgmt)
2722                 return -EINVAL;
2723
2724         wdev_lock(dev->ieee80211_ptr);
2725
2726         if (key.def) {
2727                 if (!rdev->ops->set_default_key) {
2728                         err = -EOPNOTSUPP;
2729                         goto out;
2730                 }
2731
2732                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2733                 if (err)
2734                         goto out;
2735
2736                 err = rdev_set_default_key(rdev, dev, key.idx,
2737                                                  key.def_uni, key.def_multi);
2738
2739                 if (err)
2740                         goto out;
2741
2742 #ifdef CONFIG_CFG80211_WEXT
2743                 dev->ieee80211_ptr->wext.default_key = key.idx;
2744 #endif
2745         } else {
2746                 if (key.def_uni || !key.def_multi) {
2747                         err = -EINVAL;
2748                         goto out;
2749                 }
2750
2751                 if (!rdev->ops->set_default_mgmt_key) {
2752                         err = -EOPNOTSUPP;
2753                         goto out;
2754                 }
2755
2756                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2757                 if (err)
2758                         goto out;
2759
2760                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2761                 if (err)
2762                         goto out;
2763
2764 #ifdef CONFIG_CFG80211_WEXT
2765                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2766 #endif
2767         }
2768
2769  out:
2770         wdev_unlock(dev->ieee80211_ptr);
2771
2772         return err;
2773 }
2774
2775 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2776 {
2777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2778         int err;
2779         struct net_device *dev = info->user_ptr[1];
2780         struct key_parse key;
2781         const u8 *mac_addr = NULL;
2782
2783         err = nl80211_parse_key(info, &key);
2784         if (err)
2785                 return err;
2786
2787         if (!key.p.key)
2788                 return -EINVAL;
2789
2790         if (info->attrs[NL80211_ATTR_MAC])
2791                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2792
2793         if (key.type == -1) {
2794                 if (mac_addr)
2795                         key.type = NL80211_KEYTYPE_PAIRWISE;
2796                 else
2797                         key.type = NL80211_KEYTYPE_GROUP;
2798         }
2799
2800         /* for now */
2801         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2802             key.type != NL80211_KEYTYPE_GROUP)
2803                 return -EINVAL;
2804
2805         if (!rdev->ops->add_key)
2806                 return -EOPNOTSUPP;
2807
2808         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2809                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2810                                            mac_addr))
2811                 return -EINVAL;
2812
2813         wdev_lock(dev->ieee80211_ptr);
2814         err = nl80211_key_allowed(dev->ieee80211_ptr);
2815         if (!err)
2816                 err = rdev_add_key(rdev, dev, key.idx,
2817                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2818                                     mac_addr, &key.p);
2819         wdev_unlock(dev->ieee80211_ptr);
2820
2821         return err;
2822 }
2823
2824 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2825 {
2826         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2827         int err;
2828         struct net_device *dev = info->user_ptr[1];
2829         u8 *mac_addr = NULL;
2830         struct key_parse key;
2831
2832         err = nl80211_parse_key(info, &key);
2833         if (err)
2834                 return err;
2835
2836         if (info->attrs[NL80211_ATTR_MAC])
2837                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2838
2839         if (key.type == -1) {
2840                 if (mac_addr)
2841                         key.type = NL80211_KEYTYPE_PAIRWISE;
2842                 else
2843                         key.type = NL80211_KEYTYPE_GROUP;
2844         }
2845
2846         /* for now */
2847         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2848             key.type != NL80211_KEYTYPE_GROUP)
2849                 return -EINVAL;
2850
2851         if (!rdev->ops->del_key)
2852                 return -EOPNOTSUPP;
2853
2854         wdev_lock(dev->ieee80211_ptr);
2855         err = nl80211_key_allowed(dev->ieee80211_ptr);
2856
2857         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2858             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2859                 err = -ENOENT;
2860
2861         if (!err)
2862                 err = rdev_del_key(rdev, dev, key.idx,
2863                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2864                                    mac_addr);
2865
2866 #ifdef CONFIG_CFG80211_WEXT
2867         if (!err) {
2868                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2869                         dev->ieee80211_ptr->wext.default_key = -1;
2870                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2871                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2872         }
2873 #endif
2874         wdev_unlock(dev->ieee80211_ptr);
2875
2876         return err;
2877 }
2878
2879 /* This function returns an error or the number of nested attributes */
2880 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2881 {
2882         struct nlattr *attr;
2883         int n_entries = 0, tmp;
2884
2885         nla_for_each_nested(attr, nl_attr, tmp) {
2886                 if (nla_len(attr) != ETH_ALEN)
2887                         return -EINVAL;
2888
2889                 n_entries++;
2890         }
2891
2892         return n_entries;
2893 }
2894
2895 /*
2896  * This function parses ACL information and allocates memory for ACL data.
2897  * On successful return, the calling function is responsible to free the
2898  * ACL buffer returned by this function.
2899  */
2900 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2901                                                 struct genl_info *info)
2902 {
2903         enum nl80211_acl_policy acl_policy;
2904         struct nlattr *attr;
2905         struct cfg80211_acl_data *acl;
2906         int i = 0, n_entries, tmp;
2907
2908         if (!wiphy->max_acl_mac_addrs)
2909                 return ERR_PTR(-EOPNOTSUPP);
2910
2911         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2912                 return ERR_PTR(-EINVAL);
2913
2914         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2915         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2916             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2917                 return ERR_PTR(-EINVAL);
2918
2919         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2920                 return ERR_PTR(-EINVAL);
2921
2922         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2923         if (n_entries < 0)
2924                 return ERR_PTR(n_entries);
2925
2926         if (n_entries > wiphy->max_acl_mac_addrs)
2927                 return ERR_PTR(-ENOTSUPP);
2928
2929         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2930                       GFP_KERNEL);
2931         if (!acl)
2932                 return ERR_PTR(-ENOMEM);
2933
2934         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2935                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2936                 i++;
2937         }
2938
2939         acl->n_acl_entries = n_entries;
2940         acl->acl_policy = acl_policy;
2941
2942         return acl;
2943 }
2944
2945 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2946 {
2947         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2948         struct net_device *dev = info->user_ptr[1];
2949         struct cfg80211_acl_data *acl;
2950         int err;
2951
2952         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2953             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2954                 return -EOPNOTSUPP;
2955
2956         if (!dev->ieee80211_ptr->beacon_interval)
2957                 return -EINVAL;
2958
2959         acl = parse_acl_data(&rdev->wiphy, info);
2960         if (IS_ERR(acl))
2961                 return PTR_ERR(acl);
2962
2963         err = rdev_set_mac_acl(rdev, dev, acl);
2964
2965         kfree(acl);
2966
2967         return err;
2968 }
2969
2970 static int nl80211_parse_beacon(struct nlattr *attrs[],
2971                                 struct cfg80211_beacon_data *bcn)
2972 {
2973         bool haveinfo = false;
2974
2975         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2976             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2977             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2978             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2979                 return -EINVAL;
2980
2981         memset(bcn, 0, sizeof(*bcn));
2982
2983         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2984                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2985                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2986                 if (!bcn->head_len)
2987                         return -EINVAL;
2988                 haveinfo = true;
2989         }
2990
2991         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2992                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2993                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2994                 haveinfo = true;
2995         }
2996
2997         if (!haveinfo)
2998                 return -EINVAL;
2999
3000         if (attrs[NL80211_ATTR_IE]) {
3001                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3002                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3003         }
3004
3005         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3006                 bcn->proberesp_ies =
3007                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3008                 bcn->proberesp_ies_len =
3009                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3010         }
3011
3012         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3013                 bcn->assocresp_ies =
3014                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3015                 bcn->assocresp_ies_len =
3016                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3017         }
3018
3019         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3020                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3021                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3022         }
3023
3024         return 0;
3025 }
3026
3027 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3028                                    struct cfg80211_ap_settings *params)
3029 {
3030         struct wireless_dev *wdev;
3031         bool ret = false;
3032
3033         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3034                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3035                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3036                         continue;
3037
3038                 if (!wdev->preset_chandef.chan)
3039                         continue;
3040
3041                 params->chandef = wdev->preset_chandef;
3042                 ret = true;
3043                 break;
3044         }
3045
3046         return ret;
3047 }
3048
3049 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3050                                     enum nl80211_auth_type auth_type,
3051                                     enum nl80211_commands cmd)
3052 {
3053         if (auth_type > NL80211_AUTHTYPE_MAX)
3054                 return false;
3055
3056         switch (cmd) {
3057         case NL80211_CMD_AUTHENTICATE:
3058                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3059                     auth_type == NL80211_AUTHTYPE_SAE)
3060                         return false;
3061                 return true;
3062         case NL80211_CMD_CONNECT:
3063         case NL80211_CMD_START_AP:
3064                 /* SAE not supported yet */
3065                 if (auth_type == NL80211_AUTHTYPE_SAE)
3066                         return false;
3067                 return true;
3068         default:
3069                 return false;
3070         }
3071 }
3072
3073 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3074 {
3075         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3076         struct net_device *dev = info->user_ptr[1];
3077         struct wireless_dev *wdev = dev->ieee80211_ptr;
3078         struct cfg80211_ap_settings params;
3079         int err;
3080         u8 radar_detect_width = 0;
3081
3082         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3083             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3084                 return -EOPNOTSUPP;
3085
3086         if (!rdev->ops->start_ap)
3087                 return -EOPNOTSUPP;
3088
3089         if (wdev->beacon_interval)
3090                 return -EALREADY;
3091
3092         memset(&params, 0, sizeof(params));
3093
3094         /* these are required for START_AP */
3095         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3096             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3097             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3098                 return -EINVAL;
3099
3100         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3101         if (err)
3102                 return err;
3103
3104         params.beacon_interval =
3105                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3106         params.dtim_period =
3107                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3108
3109         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3110         if (err)
3111                 return err;
3112
3113         /*
3114          * In theory, some of these attributes should be required here
3115          * but since they were not used when the command was originally
3116          * added, keep them optional for old user space programs to let
3117          * them continue to work with drivers that do not need the
3118          * additional information -- drivers must check!
3119          */
3120         if (info->attrs[NL80211_ATTR_SSID]) {
3121                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3122                 params.ssid_len =
3123                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3124                 if (params.ssid_len == 0 ||
3125                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3126                         return -EINVAL;
3127         }
3128
3129         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3130                 params.hidden_ssid = nla_get_u32(
3131                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3132                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3133                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3134                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3135                         return -EINVAL;
3136         }
3137
3138         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3139
3140         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3141                 params.auth_type = nla_get_u32(
3142                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3143                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3144                                              NL80211_CMD_START_AP))
3145                         return -EINVAL;
3146         } else
3147                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3148
3149         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3150                                       NL80211_MAX_NR_CIPHER_SUITES);
3151         if (err)
3152                 return err;
3153
3154         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3155                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3156                         return -EOPNOTSUPP;
3157                 params.inactivity_timeout = nla_get_u16(
3158                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3159         }
3160
3161         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3162                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3163                         return -EINVAL;
3164                 params.p2p_ctwindow =
3165                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3166                 if (params.p2p_ctwindow > 127)
3167                         return -EINVAL;
3168                 if (params.p2p_ctwindow != 0 &&
3169                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3170                         return -EINVAL;
3171         }
3172
3173         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3174                 u8 tmp;
3175
3176                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3177                         return -EINVAL;
3178                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3179                 if (tmp > 1)
3180                         return -EINVAL;
3181                 params.p2p_opp_ps = tmp;
3182                 if (params.p2p_opp_ps != 0 &&
3183                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3184                         return -EINVAL;
3185         }
3186
3187         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3188                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3189                 if (err)
3190                         return err;
3191         } else if (wdev->preset_chandef.chan) {
3192                 params.chandef = wdev->preset_chandef;
3193         } else if (!nl80211_get_ap_channel(rdev, &params))
3194                 return -EINVAL;
3195
3196         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3197                 return -EINVAL;
3198
3199         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3200         if (err < 0)
3201                 return err;
3202         if (err) {
3203                 radar_detect_width = BIT(params.chandef.width);
3204                 params.radar_required = true;
3205         }
3206
3207         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3208                                            params.chandef.chan,
3209                                            CHAN_MODE_SHARED,
3210                                            radar_detect_width);
3211         if (err)
3212                 return err;
3213
3214         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3215                 params.acl = parse_acl_data(&rdev->wiphy, info);
3216                 if (IS_ERR(params.acl))
3217                         return PTR_ERR(params.acl);
3218         }
3219
3220         err = rdev_start_ap(rdev, dev, &params);
3221         if (!err) {
3222                 wdev->preset_chandef = params.chandef;
3223                 wdev->beacon_interval = params.beacon_interval;
3224                 wdev->channel = params.chandef.chan;
3225                 wdev->ssid_len = params.ssid_len;
3226                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3227         }
3228
3229         kfree(params.acl);
3230
3231         return err;
3232 }
3233
3234 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3235 {
3236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3237         struct net_device *dev = info->user_ptr[1];
3238         struct wireless_dev *wdev = dev->ieee80211_ptr;
3239         struct cfg80211_beacon_data params;
3240         int err;
3241
3242         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3243             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3244                 return -EOPNOTSUPP;
3245
3246         if (!rdev->ops->change_beacon)
3247                 return -EOPNOTSUPP;
3248
3249         if (!wdev->beacon_interval)
3250                 return -EINVAL;
3251
3252         err = nl80211_parse_beacon(info->attrs, &params);
3253         if (err)
3254                 return err;
3255
3256         return rdev_change_beacon(rdev, dev, &params);
3257 }
3258
3259 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3260 {
3261         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3262         struct net_device *dev = info->user_ptr[1];
3263
3264         return cfg80211_stop_ap(rdev, dev);
3265 }
3266
3267 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3268         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3269         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3270         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3271         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3272         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3273         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3274 };
3275
3276 static int parse_station_flags(struct genl_info *info,
3277                                enum nl80211_iftype iftype,
3278                                struct station_parameters *params)
3279 {
3280         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3281         struct nlattr *nla;
3282         int flag;
3283
3284         /*
3285          * Try parsing the new attribute first so userspace
3286          * can specify both for older kernels.
3287          */
3288         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3289         if (nla) {
3290                 struct nl80211_sta_flag_update *sta_flags;
3291
3292                 sta_flags = nla_data(nla);
3293                 params->sta_flags_mask = sta_flags->mask;
3294                 params->sta_flags_set = sta_flags->set;
3295                 params->sta_flags_set &= params->sta_flags_mask;
3296                 if ((params->sta_flags_mask |
3297                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3298                         return -EINVAL;
3299                 return 0;
3300         }
3301
3302         /* if present, parse the old attribute */
3303
3304         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3305         if (!nla)
3306                 return 0;
3307
3308         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3309                              nla, sta_flags_policy))
3310                 return -EINVAL;
3311
3312         /*
3313          * Only allow certain flags for interface types so that
3314          * other attributes are silently ignored. Remember that
3315          * this is backward compatibility code with old userspace
3316          * and shouldn't be hit in other cases anyway.
3317          */
3318         switch (iftype) {
3319         case NL80211_IFTYPE_AP:
3320         case NL80211_IFTYPE_AP_VLAN:
3321         case NL80211_IFTYPE_P2P_GO:
3322                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3323                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3324                                          BIT(NL80211_STA_FLAG_WME) |
3325                                          BIT(NL80211_STA_FLAG_MFP);
3326                 break;
3327         case NL80211_IFTYPE_P2P_CLIENT:
3328         case NL80211_IFTYPE_STATION:
3329                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3330                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3331                 break;
3332         case NL80211_IFTYPE_MESH_POINT:
3333                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3334                                          BIT(NL80211_STA_FLAG_MFP) |
3335                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3336         default:
3337                 return -EINVAL;
3338         }
3339
3340         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3341                 if (flags[flag]) {
3342                         params->sta_flags_set |= (1<<flag);
3343
3344                         /* no longer support new API additions in old API */
3345                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3346                                 return -EINVAL;
3347                 }
3348         }
3349
3350         return 0;
3351 }
3352
3353 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3354                                  int attr)
3355 {
3356         struct nlattr *rate;
3357         u32 bitrate;
3358         u16 bitrate_compat;
3359
3360         rate = nla_nest_start(msg, attr);
3361         if (!rate)
3362                 return false;
3363
3364         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3365         bitrate = cfg80211_calculate_bitrate(info);
3366         /* report 16-bit bitrate only if we can */
3367         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3368         if (bitrate > 0 &&
3369             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3370                 return false;
3371         if (bitrate_compat > 0 &&
3372             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3373                 return false;
3374
3375         if (info->flags & RATE_INFO_FLAGS_MCS) {
3376                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3377                         return false;
3378                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3379                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3380                         return false;
3381                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3382                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3383                         return false;
3384         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3385                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3386                         return false;
3387                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3388                         return false;
3389                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3390                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3391                         return false;
3392                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3393                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3394                         return false;
3395                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3396                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3397                         return false;
3398                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3399                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3400                         return false;
3401                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3402                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3403                         return false;
3404         }
3405
3406         nla_nest_end(msg, rate);
3407         return true;
3408 }
3409
3410 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3411                                int id)
3412 {
3413         void *attr;
3414         int i = 0;
3415
3416         if (!mask)
3417                 return true;
3418
3419         attr = nla_nest_start(msg, id);
3420         if (!attr)
3421                 return false;
3422
3423         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3424                 if (!(mask & BIT(i)))
3425                         continue;
3426
3427                 if (nla_put_u8(msg, i, signal[i]))
3428                         return false;
3429         }
3430
3431         nla_nest_end(msg, attr);
3432
3433         return true;
3434 }
3435
3436 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3437                                 int flags,
3438                                 struct cfg80211_registered_device *rdev,
3439                                 struct net_device *dev,
3440                                 const u8 *mac_addr, struct station_info *sinfo)
3441 {
3442         void *hdr;
3443         struct nlattr *sinfoattr, *bss_param;
3444
3445         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3446         if (!hdr)
3447                 return -1;
3448
3449         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3450             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3451             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3452                 goto nla_put_failure;
3453
3454         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3455         if (!sinfoattr)
3456                 goto nla_put_failure;
3457         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3458             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3459                         sinfo->connected_time))
3460                 goto nla_put_failure;
3461         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3462             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3463                         sinfo->inactive_time))
3464                 goto nla_put_failure;
3465         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3466                               STATION_INFO_RX_BYTES64)) &&
3467             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3468                         (u32)sinfo->rx_bytes))
3469                 goto nla_put_failure;
3470         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3471                               STATION_INFO_TX_BYTES64)) &&
3472             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3473                         (u32)sinfo->tx_bytes))
3474                 goto nla_put_failure;
3475         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3476             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3477                         sinfo->rx_bytes))
3478                 goto nla_put_failure;
3479         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3480             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3481                         sinfo->tx_bytes))
3482                 goto nla_put_failure;
3483         if ((sinfo->filled & STATION_INFO_LLID) &&
3484             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3485                 goto nla_put_failure;
3486         if ((sinfo->filled & STATION_INFO_PLID) &&
3487             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3488                 goto nla_put_failure;
3489         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3490             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3491                        sinfo->plink_state))
3492                 goto nla_put_failure;
3493         switch (rdev->wiphy.signal_type) {
3494         case CFG80211_SIGNAL_TYPE_MBM:
3495                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3496                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3497                                sinfo->signal))
3498                         goto nla_put_failure;
3499                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3500                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3501                                sinfo->signal_avg))
3502                         goto nla_put_failure;
3503                 break;
3504         default:
3505                 break;
3506         }
3507         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3508                 if (!nl80211_put_signal(msg, sinfo->chains,
3509                                         sinfo->chain_signal,
3510                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3511                         goto nla_put_failure;
3512         }
3513         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3514                 if (!nl80211_put_signal(msg, sinfo->chains,
3515                                         sinfo->chain_signal_avg,
3516                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3517                         goto nla_put_failure;
3518         }
3519         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3520                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3521                                           NL80211_STA_INFO_TX_BITRATE))
3522                         goto nla_put_failure;
3523         }
3524         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3525                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3526                                           NL80211_STA_INFO_RX_BITRATE))
3527                         goto nla_put_failure;
3528         }
3529         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3530             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3531                         sinfo->rx_packets))
3532                 goto nla_put_failure;
3533         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3534             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3535                         sinfo->tx_packets))
3536                 goto nla_put_failure;
3537         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3538             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3539                         sinfo->tx_retries))
3540                 goto nla_put_failure;
3541         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3542             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3543                         sinfo->tx_failed))
3544                 goto nla_put_failure;
3545         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3546             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3547                         sinfo->beacon_loss_count))
3548                 goto nla_put_failure;
3549         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3550             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3551                         sinfo->local_pm))
3552                 goto nla_put_failure;
3553         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3554             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3555                         sinfo->peer_pm))
3556                 goto nla_put_failure;
3557         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3558             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3559                         sinfo->nonpeer_pm))
3560                 goto nla_put_failure;
3561         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3562                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3563                 if (!bss_param)
3564                         goto nla_put_failure;
3565
3566                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3567                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3568                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3569                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3570                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3571                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3572                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3573                                sinfo->bss_param.dtim_period) ||
3574                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3575                                 sinfo->bss_param.beacon_interval))
3576                         goto nla_put_failure;
3577
3578                 nla_nest_end(msg, bss_param);
3579         }
3580         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3581             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3582                     sizeof(struct nl80211_sta_flag_update),
3583                     &sinfo->sta_flags))
3584                 goto nla_put_failure;
3585         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3586                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3587                             sinfo->t_offset))
3588                 goto nla_put_failure;
3589         nla_nest_end(msg, sinfoattr);
3590
3591         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3592             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3593                     sinfo->assoc_req_ies))
3594                 goto nla_put_failure;
3595
3596         return genlmsg_end(msg, hdr);
3597
3598  nla_put_failure:
3599         genlmsg_cancel(msg, hdr);
3600         return -EMSGSIZE;
3601 }
3602
3603 static int nl80211_dump_station(struct sk_buff *skb,
3604                                 struct netlink_callback *cb)
3605 {
3606         struct station_info sinfo;
3607         struct cfg80211_registered_device *dev;
3608         struct wireless_dev *wdev;
3609         u8 mac_addr[ETH_ALEN];
3610         int sta_idx = cb->args[2];
3611         int err;
3612
3613         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3614         if (err)
3615                 return err;
3616
3617         if (!wdev->netdev) {
3618                 err = -EINVAL;
3619                 goto out_err;
3620         }
3621
3622         if (!dev->ops->dump_station) {
3623                 err = -EOPNOTSUPP;
3624                 goto out_err;
3625         }
3626
3627         while (1) {
3628                 memset(&sinfo, 0, sizeof(sinfo));
3629                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3630                                         mac_addr, &sinfo);
3631                 if (err == -ENOENT)
3632                         break;
3633                 if (err)
3634                         goto out_err;
3635
3636                 if (nl80211_send_station(skb,
3637                                 NETLINK_CB(cb->skb).portid,
3638                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3639                                 dev, wdev->netdev, mac_addr,
3640                                 &sinfo) < 0)
3641                         goto out;
3642
3643                 sta_idx++;
3644         }
3645
3646
3647  out:
3648         cb->args[2] = sta_idx;
3649         err = skb->len;
3650  out_err:
3651         nl80211_finish_wdev_dump(dev);
3652
3653         return err;
3654 }
3655
3656 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3657 {
3658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3659         struct net_device *dev = info->user_ptr[1];
3660         struct station_info sinfo;
3661         struct sk_buff *msg;
3662         u8 *mac_addr = NULL;
3663         int err;
3664
3665         memset(&sinfo, 0, sizeof(sinfo));
3666
3667         if (!info->attrs[NL80211_ATTR_MAC])
3668                 return -EINVAL;
3669
3670         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3671
3672         if (!rdev->ops->get_station)
3673                 return -EOPNOTSUPP;
3674
3675         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3676         if (err)
3677                 return err;
3678
3679         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3680         if (!msg)
3681                 return -ENOMEM;
3682
3683         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3684                                  rdev, dev, mac_addr, &sinfo) < 0) {
3685                 nlmsg_free(msg);
3686                 return -ENOBUFS;
3687         }
3688
3689         return genlmsg_reply(msg, info);
3690 }
3691
3692 int cfg80211_check_station_change(struct wiphy *wiphy,
3693                                   struct station_parameters *params,
3694                                   enum cfg80211_station_type statype)
3695 {
3696         if (params->listen_interval != -1)
3697                 return -EINVAL;
3698         if (params->aid)
3699                 return -EINVAL;
3700
3701         /* When you run into this, adjust the code below for the new flag */
3702         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3703
3704         switch (statype) {
3705         case CFG80211_STA_MESH_PEER_KERNEL:
3706         case CFG80211_STA_MESH_PEER_USER:
3707                 /*
3708                  * No ignoring the TDLS flag here -- the userspace mesh
3709                  * code doesn't have the bug of including TDLS in the
3710                  * mask everywhere.
3711                  */
3712                 if (params->sta_flags_mask &
3713                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3714                                   BIT(NL80211_STA_FLAG_MFP) |
3715                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3716                         return -EINVAL;
3717                 break;
3718         case CFG80211_STA_TDLS_PEER_SETUP:
3719         case CFG80211_STA_TDLS_PEER_ACTIVE:
3720                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3721                         return -EINVAL;
3722                 /* ignore since it can't change */
3723                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3724                 break;
3725         default:
3726                 /* disallow mesh-specific things */
3727                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3728                         return -EINVAL;
3729                 if (params->local_pm)
3730                         return -EINVAL;
3731                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3732                         return -EINVAL;
3733         }
3734
3735         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3736             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3737                 /* TDLS can't be set, ... */
3738                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3739                         return -EINVAL;
3740                 /*
3741                  * ... but don't bother the driver with it. This works around
3742                  * a hostapd/wpa_supplicant issue -- it always includes the
3743                  * TLDS_PEER flag in the mask even for AP mode.
3744                  */
3745                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3746         }
3747
3748         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3749                 /* reject other things that can't change */
3750                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3751                         return -EINVAL;
3752                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3753                         return -EINVAL;
3754                 if (params->supported_rates)
3755                         return -EINVAL;
3756                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3757                         return -EINVAL;
3758         }
3759
3760         if (statype != CFG80211_STA_AP_CLIENT) {
3761                 if (params->vlan)
3762                         return -EINVAL;
3763         }
3764
3765         switch (statype) {
3766         case CFG80211_STA_AP_MLME_CLIENT:
3767                 /* Use this only for authorizing/unauthorizing a station */
3768                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3769                         return -EOPNOTSUPP;
3770                 break;
3771         case CFG80211_STA_AP_CLIENT:
3772                 /* accept only the listed bits */
3773                 if (params->sta_flags_mask &
3774                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3775                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3776                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3777                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3778                                   BIT(NL80211_STA_FLAG_WME) |
3779                                   BIT(NL80211_STA_FLAG_MFP)))
3780                         return -EINVAL;
3781
3782                 /* but authenticated/associated only if driver handles it */
3783                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3784                     params->sta_flags_mask &
3785                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3786                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3787                         return -EINVAL;
3788                 break;
3789         case CFG80211_STA_IBSS:
3790         case CFG80211_STA_AP_STA:
3791                 /* reject any changes other than AUTHORIZED */
3792                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3793                         return -EINVAL;
3794                 break;
3795         case CFG80211_STA_TDLS_PEER_SETUP:
3796                 /* reject any changes other than AUTHORIZED or WME */
3797                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3798                                                BIT(NL80211_STA_FLAG_WME)))
3799                         return -EINVAL;
3800                 /* force (at least) rates when authorizing */
3801                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3802                     !params->supported_rates)
3803                         return -EINVAL;
3804                 break;
3805         case CFG80211_STA_TDLS_PEER_ACTIVE:
3806                 /* reject any changes */
3807                 return -EINVAL;
3808         case CFG80211_STA_MESH_PEER_KERNEL:
3809                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3810                         return -EINVAL;
3811                 break;
3812         case CFG80211_STA_MESH_PEER_USER:
3813                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3814                         return -EINVAL;
3815                 break;
3816         }
3817
3818         return 0;
3819 }
3820 EXPORT_SYMBOL(cfg80211_check_station_change);
3821
3822 /*
3823  * Get vlan interface making sure it is running and on the right wiphy.
3824  */
3825 static struct net_device *get_vlan(struct genl_info *info,
3826                                    struct cfg80211_registered_device *rdev)
3827 {
3828         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3829         struct net_device *v;
3830         int ret;
3831
3832         if (!vlanattr)
3833                 return NULL;
3834
3835         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3836         if (!v)
3837                 return ERR_PTR(-ENODEV);
3838
3839         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3840                 ret = -EINVAL;
3841                 goto error;
3842         }
3843
3844         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3845             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3846             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3847                 ret = -EINVAL;
3848                 goto error;
3849         }
3850
3851         if (!netif_running(v)) {
3852                 ret = -ENETDOWN;
3853                 goto error;
3854         }
3855
3856         return v;
3857  error:
3858         dev_put(v);
3859         return ERR_PTR(ret);
3860 }
3861
3862 static struct nla_policy
3863 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3864         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3865         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3866 };
3867
3868 static int nl80211_parse_sta_wme(struct genl_info *info,
3869                                  struct station_parameters *params)
3870 {
3871         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3872         struct nlattr *nla;
3873         int err;
3874
3875         /* parse WME attributes if present */
3876         if (!info->attrs[NL80211_ATTR_STA_WME])
3877                 return 0;
3878
3879         nla = info->attrs[NL80211_ATTR_STA_WME];
3880         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3881                                nl80211_sta_wme_policy);
3882         if (err)
3883                 return err;
3884
3885         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3886                 params->uapsd_queues = nla_get_u8(
3887                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3888         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3889                 return -EINVAL;
3890
3891         if (tb[NL80211_STA_WME_MAX_SP])
3892                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3893
3894         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3895                 return -EINVAL;
3896
3897         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3898
3899         return 0;
3900 }
3901
3902 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3903                                       struct station_parameters *params)
3904 {
3905         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3906                 params->supported_channels =
3907                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3908                 params->supported_channels_len =
3909                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3910                 /*
3911                  * Need to include at least one (first channel, number of
3912                  * channels) tuple for each subband, and must have proper
3913                  * tuples for the rest of the data as well.
3914                  */
3915                 if (params->supported_channels_len < 2)
3916                         return -EINVAL;
3917                 if (params->supported_channels_len % 2)
3918                         return -EINVAL;
3919         }
3920
3921         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3922                 params->supported_oper_classes =
3923                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3924                 params->supported_oper_classes_len =
3925                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3926                 /*
3927                  * The value of the Length field of the Supported Operating
3928                  * Classes element is between 2 and 253.
3929                  */
3930                 if (params->supported_oper_classes_len < 2 ||
3931                     params->supported_oper_classes_len > 253)
3932                         return -EINVAL;
3933         }
3934         return 0;
3935 }
3936
3937 static int nl80211_set_station_tdls(struct genl_info *info,
3938                                     struct station_parameters *params)
3939 {
3940         int err;
3941         /* Dummy STA entry gets updated once the peer capabilities are known */
3942         if (info->attrs[NL80211_ATTR_PEER_AID])
3943                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3944         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3945                 params->ht_capa =
3946                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3947         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3948                 params->vht_capa =
3949                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3950
3951         err = nl80211_parse_sta_channel_info(info, params);
3952         if (err)
3953                 return err;
3954
3955         return nl80211_parse_sta_wme(info, params);
3956 }
3957
3958 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3959 {
3960         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3961         struct net_device *dev = info->user_ptr[1];
3962         struct station_parameters params;
3963         u8 *mac_addr;
3964         int err;
3965
3966         memset(&params, 0, sizeof(params));
3967
3968         params.listen_interval = -1;
3969
3970         if (!rdev->ops->change_station)
3971                 return -EOPNOTSUPP;
3972
3973         if (info->attrs[NL80211_ATTR_STA_AID])
3974                 return -EINVAL;
3975
3976         if (!info->attrs[NL80211_ATTR_MAC])
3977                 return -EINVAL;
3978
3979         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3980
3981         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3982                 params.supported_rates =
3983                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3984                 params.supported_rates_len =
3985                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3986         }
3987
3988         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3989                 params.capability =
3990                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3991                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3992         }
3993
3994         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3995                 params.ext_capab =
3996                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3997                 params.ext_capab_len =
3998                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3999         }
4000
4001         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4002                 return -EINVAL;
4003
4004         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4005                 return -EINVAL;
4006
4007         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4008                 params.plink_action =
4009                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4010                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4011                         return -EINVAL;
4012         }
4013
4014         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4015                 params.plink_state =
4016                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4017                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4018                         return -EINVAL;
4019                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4020         }
4021
4022         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4023                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4024                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4025
4026                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4027                     pm > NL80211_MESH_POWER_MAX)
4028                         return -EINVAL;
4029
4030                 params.local_pm = pm;
4031         }
4032
4033         /* Include parameters for TDLS peer (will check later) */
4034         err = nl80211_set_station_tdls(info, &params);
4035         if (err)
4036                 return err;
4037
4038         params.vlan = get_vlan(info, rdev);
4039         if (IS_ERR(params.vlan))
4040                 return PTR_ERR(params.vlan);
4041
4042         switch (dev->ieee80211_ptr->iftype) {
4043         case NL80211_IFTYPE_AP:
4044         case NL80211_IFTYPE_AP_VLAN:
4045         case NL80211_IFTYPE_P2P_GO:
4046         case NL80211_IFTYPE_P2P_CLIENT:
4047         case NL80211_IFTYPE_STATION:
4048         case NL80211_IFTYPE_ADHOC:
4049         case NL80211_IFTYPE_MESH_POINT:
4050                 break;
4051         default:
4052                 err = -EOPNOTSUPP;
4053                 goto out_put_vlan;
4054         }
4055
4056         /* driver will call cfg80211_check_station_change() */
4057         err = rdev_change_station(rdev, dev, mac_addr, &params);
4058
4059  out_put_vlan:
4060         if (params.vlan)
4061                 dev_put(params.vlan);
4062
4063         return err;
4064 }
4065
4066 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4067 {
4068         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4069         int err;
4070         struct net_device *dev = info->user_ptr[1];
4071         struct station_parameters params;
4072         u8 *mac_addr = NULL;
4073
4074         memset(&params, 0, sizeof(params));
4075
4076         if (!rdev->ops->add_station)
4077                 return -EOPNOTSUPP;
4078
4079         if (!info->attrs[NL80211_ATTR_MAC])
4080                 return -EINVAL;
4081
4082         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4083                 return -EINVAL;
4084
4085         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4086                 return -EINVAL;
4087
4088         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4089             !info->attrs[NL80211_ATTR_PEER_AID])
4090                 return -EINVAL;
4091
4092         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4093         params.supported_rates =
4094                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4095         params.supported_rates_len =
4096                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4097         params.listen_interval =
4098                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4099
4100         if (info->attrs[NL80211_ATTR_PEER_AID])
4101                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4102         else
4103                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4104         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4105                 return -EINVAL;
4106
4107         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4108                 params.capability =
4109                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4110                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4111         }
4112
4113         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4114                 params.ext_capab =
4115                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4116                 params.ext_capab_len =
4117                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4118         }
4119
4120         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4121                 params.ht_capa =
4122                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4123
4124         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4125                 params.vht_capa =
4126                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4127
4128         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4129                 params.plink_action =
4130                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4131                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4132                         return -EINVAL;
4133         }
4134
4135         err = nl80211_parse_sta_channel_info(info, &params);
4136         if (err)
4137                 return err;
4138
4139         err = nl80211_parse_sta_wme(info, &params);
4140         if (err)
4141                 return err;
4142
4143         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4144                 return -EINVAL;
4145
4146         /* When you run into this, adjust the code below for the new flag */
4147         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4148
4149         switch (dev->ieee80211_ptr->iftype) {
4150         case NL80211_IFTYPE_AP:
4151         case NL80211_IFTYPE_AP_VLAN:
4152         case NL80211_IFTYPE_P2P_GO:
4153                 /* ignore WME attributes if iface/sta is not capable */
4154                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4155                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4156                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4157
4158                 /* TDLS peers cannot be added */
4159                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4160                     info->attrs[NL80211_ATTR_PEER_AID])
4161                         return -EINVAL;
4162                 /* but don't bother the driver with it */
4163                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4164
4165                 /* allow authenticated/associated only if driver handles it */
4166                 if (!(rdev->wiphy.features &
4167                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4168                     params.sta_flags_mask &
4169                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4170                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4171                         return -EINVAL;
4172
4173                 /* must be last in here for error handling */
4174                 params.vlan = get_vlan(info, rdev);
4175                 if (IS_ERR(params.vlan))
4176                         return PTR_ERR(params.vlan);
4177                 break;
4178         case NL80211_IFTYPE_MESH_POINT:
4179                 /* ignore uAPSD data */
4180                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4181
4182                 /* associated is disallowed */
4183                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4184                         return -EINVAL;
4185                 /* TDLS peers cannot be added */
4186                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4187                     info->attrs[NL80211_ATTR_PEER_AID])
4188                         return -EINVAL;
4189                 break;
4190         case NL80211_IFTYPE_STATION:
4191         case NL80211_IFTYPE_P2P_CLIENT:
4192                 /* ignore uAPSD data */
4193                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4194
4195                 /* these are disallowed */
4196                 if (params.sta_flags_mask &
4197                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4198                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4199                         return -EINVAL;
4200                 /* Only TDLS peers can be added */
4201                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4202                         return -EINVAL;
4203                 /* Can only add if TDLS ... */
4204                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4205                         return -EOPNOTSUPP;
4206                 /* ... with external setup is supported */
4207                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4208                         return -EOPNOTSUPP;
4209                 /*
4210                  * Older wpa_supplicant versions always mark the TDLS peer
4211                  * as authorized, but it shouldn't yet be.
4212                  */
4213                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4214                 break;
4215         default:
4216                 return -EOPNOTSUPP;
4217         }
4218
4219         /* be aware of params.vlan when changing code here */
4220
4221         err = rdev_add_station(rdev, dev, mac_addr, &params);
4222
4223         if (params.vlan)
4224                 dev_put(params.vlan);
4225         return err;
4226 }
4227
4228 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4229 {
4230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4231         struct net_device *dev = info->user_ptr[1];
4232         u8 *mac_addr = NULL;
4233
4234         if (info->attrs[NL80211_ATTR_MAC])
4235                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4236
4237         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4238             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4239             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4240             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4241                 return -EINVAL;
4242
4243         if (!rdev->ops->del_station)
4244                 return -EOPNOTSUPP;
4245
4246         return rdev_del_station(rdev, dev, mac_addr);
4247 }
4248
4249 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4250                                 int flags, struct net_device *dev,
4251                                 u8 *dst, u8 *next_hop,
4252                                 struct mpath_info *pinfo)
4253 {
4254         void *hdr;
4255         struct nlattr *pinfoattr;
4256
4257         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4258         if (!hdr)
4259                 return -1;
4260
4261         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4262             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4263             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4264             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4265                 goto nla_put_failure;
4266
4267         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4268         if (!pinfoattr)
4269                 goto nla_put_failure;
4270         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4271             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4272                         pinfo->frame_qlen))
4273                 goto nla_put_failure;
4274         if (((pinfo->filled & MPATH_INFO_SN) &&
4275              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4276             ((pinfo->filled & MPATH_INFO_METRIC) &&
4277              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4278                          pinfo->metric)) ||
4279             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4280              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4281                          pinfo->exptime)) ||
4282             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4283              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4284                         pinfo->flags)) ||
4285             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4286              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4287                          pinfo->discovery_timeout)) ||
4288             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4289              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4290                         pinfo->discovery_retries)))
4291                 goto nla_put_failure;
4292
4293         nla_nest_end(msg, pinfoattr);
4294
4295         return genlmsg_end(msg, hdr);
4296
4297  nla_put_failure:
4298         genlmsg_cancel(msg, hdr);
4299         return -EMSGSIZE;
4300 }
4301
4302 static int nl80211_dump_mpath(struct sk_buff *skb,
4303                               struct netlink_callback *cb)
4304 {
4305         struct mpath_info pinfo;
4306         struct cfg80211_registered_device *dev;
4307         struct wireless_dev *wdev;
4308         u8 dst[ETH_ALEN];
4309         u8 next_hop[ETH_ALEN];
4310         int path_idx = cb->args[2];
4311         int err;
4312
4313         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4314         if (err)
4315                 return err;
4316
4317         if (!dev->ops->dump_mpath) {
4318                 err = -EOPNOTSUPP;
4319                 goto out_err;
4320         }
4321
4322         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4323                 err = -EOPNOTSUPP;
4324                 goto out_err;
4325         }
4326
4327         while (1) {
4328                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4329                                       next_hop, &pinfo);
4330                 if (err == -ENOENT)
4331                         break;
4332                 if (err)
4333                         goto out_err;
4334
4335                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4336                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4337                                        wdev->netdev, dst, next_hop,
4338                                        &pinfo) < 0)
4339                         goto out;
4340
4341                 path_idx++;
4342         }
4343
4344
4345  out:
4346         cb->args[2] = path_idx;
4347         err = skb->len;
4348  out_err:
4349         nl80211_finish_wdev_dump(dev);
4350         return err;
4351 }
4352
4353 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4354 {
4355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4356         int err;
4357         struct net_device *dev = info->user_ptr[1];
4358         struct mpath_info pinfo;
4359         struct sk_buff *msg;
4360         u8 *dst = NULL;
4361         u8 next_hop[ETH_ALEN];
4362
4363         memset(&pinfo, 0, sizeof(pinfo));
4364
4365         if (!info->attrs[NL80211_ATTR_MAC])
4366                 return -EINVAL;
4367
4368         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4369
4370         if (!rdev->ops->get_mpath)
4371                 return -EOPNOTSUPP;
4372
4373         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4374                 return -EOPNOTSUPP;
4375
4376         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4377         if (err)
4378                 return err;
4379
4380         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4381         if (!msg)
4382                 return -ENOMEM;
4383
4384         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4385                                  dev, dst, next_hop, &pinfo) < 0) {
4386                 nlmsg_free(msg);
4387                 return -ENOBUFS;
4388         }
4389
4390         return genlmsg_reply(msg, info);
4391 }
4392
4393 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4394 {
4395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4396         struct net_device *dev = info->user_ptr[1];
4397         u8 *dst = NULL;
4398         u8 *next_hop = NULL;
4399
4400         if (!info->attrs[NL80211_ATTR_MAC])
4401                 return -EINVAL;
4402
4403         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4404                 return -EINVAL;
4405
4406         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4407         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4408
4409         if (!rdev->ops->change_mpath)
4410                 return -EOPNOTSUPP;
4411
4412         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4413                 return -EOPNOTSUPP;
4414
4415         return rdev_change_mpath(rdev, dev, dst, next_hop);
4416 }
4417
4418 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4419 {
4420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4421         struct net_device *dev = info->user_ptr[1];
4422         u8 *dst = NULL;
4423         u8 *next_hop = NULL;
4424
4425         if (!info->attrs[NL80211_ATTR_MAC])
4426                 return -EINVAL;
4427
4428         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4429                 return -EINVAL;
4430
4431         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4432         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4433
4434         if (!rdev->ops->add_mpath)
4435                 return -EOPNOTSUPP;
4436
4437         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4438                 return -EOPNOTSUPP;
4439
4440         return rdev_add_mpath(rdev, dev, dst, next_hop);
4441 }
4442
4443 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4444 {
4445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4446         struct net_device *dev = info->user_ptr[1];
4447         u8 *dst = NULL;
4448
4449         if (info->attrs[NL80211_ATTR_MAC])
4450                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4451
4452         if (!rdev->ops->del_mpath)
4453                 return -EOPNOTSUPP;
4454
4455         return rdev_del_mpath(rdev, dev, dst);
4456 }
4457
4458 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4459 {
4460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4461         struct net_device *dev = info->user_ptr[1];
4462         struct bss_parameters params;
4463
4464         memset(&params, 0, sizeof(params));
4465         /* default to not changing parameters */
4466         params.use_cts_prot = -1;
4467         params.use_short_preamble = -1;
4468         params.use_short_slot_time = -1;
4469         params.ap_isolate = -1;
4470         params.ht_opmode = -1;
4471         params.p2p_ctwindow = -1;
4472         params.p2p_opp_ps = -1;
4473
4474         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4475                 params.use_cts_prot =
4476                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4477         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4478                 params.use_short_preamble =
4479                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4480         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4481                 params.use_short_slot_time =
4482                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4483         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4484                 params.basic_rates =
4485                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4486                 params.basic_rates_len =
4487                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4488         }
4489         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4490                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4491         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4492                 params.ht_opmode =
4493                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4494
4495         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4496                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4497                         return -EINVAL;
4498                 params.p2p_ctwindow =
4499                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4500                 if (params.p2p_ctwindow < 0)
4501                         return -EINVAL;
4502                 if (params.p2p_ctwindow != 0 &&
4503                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4504                         return -EINVAL;
4505         }
4506
4507         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4508                 u8 tmp;
4509
4510                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4511                         return -EINVAL;
4512                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4513                 if (tmp > 1)
4514                         return -EINVAL;
4515                 params.p2p_opp_ps = tmp;
4516                 if (params.p2p_opp_ps &&
4517                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4518                         return -EINVAL;
4519         }
4520
4521         if (!rdev->ops->change_bss)
4522                 return -EOPNOTSUPP;
4523
4524         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4525             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4526                 return -EOPNOTSUPP;
4527
4528         return rdev_change_bss(rdev, dev, &params);
4529 }
4530
4531 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4532         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4533         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4534         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4535         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4536         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4537         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4538 };
4539
4540 static int parse_reg_rule(struct nlattr *tb[],
4541         struct ieee80211_reg_rule *reg_rule)
4542 {
4543         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4544         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4545
4546         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4547                 return -EINVAL;
4548         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4549                 return -EINVAL;
4550         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4551                 return -EINVAL;
4552         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4553                 return -EINVAL;
4554         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4555                 return -EINVAL;
4556
4557         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4558
4559         freq_range->start_freq_khz =
4560                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4561         freq_range->end_freq_khz =
4562                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4563         freq_range->max_bandwidth_khz =
4564                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4565
4566         power_rule->max_eirp =
4567                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4568
4569         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4570                 power_rule->max_antenna_gain =
4571                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4572
4573         return 0;
4574 }
4575
4576 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4577 {
4578         int r;
4579         char *data = NULL;
4580         enum nl80211_user_reg_hint_type user_reg_hint_type;
4581
4582         /*
4583          * You should only get this when cfg80211 hasn't yet initialized
4584          * completely when built-in to the kernel right between the time
4585          * window between nl80211_init() and regulatory_init(), if that is
4586          * even possible.
4587          */
4588         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4589                 return -EINPROGRESS;
4590
4591         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4592                 return -EINVAL;
4593
4594         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4595
4596         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4597                 user_reg_hint_type =
4598                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4599         else
4600                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4601
4602         switch (user_reg_hint_type) {
4603         case NL80211_USER_REG_HINT_USER:
4604         case NL80211_USER_REG_HINT_CELL_BASE:
4605                 break;
4606         default:
4607                 return -EINVAL;
4608         }
4609
4610         r = regulatory_hint_user(data, user_reg_hint_type);
4611
4612         return r;
4613 }
4614
4615 static int nl80211_get_mesh_config(struct sk_buff *skb,
4616                                    struct genl_info *info)
4617 {
4618         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4619         struct net_device *dev = info->user_ptr[1];
4620         struct wireless_dev *wdev = dev->ieee80211_ptr;
4621         struct mesh_config cur_params;
4622         int err = 0;
4623         void *hdr;
4624         struct nlattr *pinfoattr;
4625         struct sk_buff *msg;
4626
4627         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4628                 return -EOPNOTSUPP;
4629
4630         if (!rdev->ops->get_mesh_config)
4631                 return -EOPNOTSUPP;
4632
4633         wdev_lock(wdev);
4634         /* If not connected, get default parameters */
4635         if (!wdev->mesh_id_len)
4636                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4637         else
4638                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4639         wdev_unlock(wdev);
4640
4641         if (err)
4642                 return err;
4643
4644         /* Draw up a netlink message to send back */
4645         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4646         if (!msg)
4647                 return -ENOMEM;
4648         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4649                              NL80211_CMD_GET_MESH_CONFIG);
4650         if (!hdr)
4651                 goto out;
4652         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4653         if (!pinfoattr)
4654                 goto nla_put_failure;
4655         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4656             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4657                         cur_params.dot11MeshRetryTimeout) ||
4658             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4659                         cur_params.dot11MeshConfirmTimeout) ||
4660             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4661                         cur_params.dot11MeshHoldingTimeout) ||
4662             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4663                         cur_params.dot11MeshMaxPeerLinks) ||
4664             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4665                        cur_params.dot11MeshMaxRetries) ||
4666             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4667                        cur_params.dot11MeshTTL) ||
4668             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4669                        cur_params.element_ttl) ||
4670             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4671                        cur_params.auto_open_plinks) ||
4672             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4673                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4674             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4675                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4676             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4677                         cur_params.path_refresh_time) ||
4678             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4679                         cur_params.min_discovery_timeout) ||
4680             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4681                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4682             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4683                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4684             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4685                         cur_params.dot11MeshHWMPperrMinInterval) ||
4686             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4687                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4688             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4689                        cur_params.dot11MeshHWMPRootMode) ||
4690             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4691                         cur_params.dot11MeshHWMPRannInterval) ||
4692             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4693                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4694             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4695                        cur_params.dot11MeshForwarding) ||
4696             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4697                         cur_params.rssi_threshold) ||
4698             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4699                         cur_params.ht_opmode) ||
4700             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4701                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4702             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4703                         cur_params.dot11MeshHWMProotInterval) ||
4704             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4705                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4706             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4707                         cur_params.power_mode) ||
4708             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4709                         cur_params.dot11MeshAwakeWindowDuration) ||
4710             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4711                         cur_params.plink_timeout))
4712                 goto nla_put_failure;
4713         nla_nest_end(msg, pinfoattr);
4714         genlmsg_end(msg, hdr);
4715         return genlmsg_reply(msg, info);
4716
4717  nla_put_failure:
4718         genlmsg_cancel(msg, hdr);
4719  out:
4720         nlmsg_free(msg);
4721         return -ENOBUFS;
4722 }
4723
4724 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4725         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4726         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4727         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4728         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4729         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4730         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4731         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4732         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4733         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4734         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4735         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4736         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4737         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4738         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4739         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4740         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4741         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4742         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4743         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4744         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4745         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4746         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4747         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4748         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4749         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4750         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4751         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4752         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4753 };
4754
4755 static const struct nla_policy
4756         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4757         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4758         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4759         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4760         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4761         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4762         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4763         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4764                                     .len = IEEE80211_MAX_DATA_LEN },
4765         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4766 };
4767
4768 static int nl80211_parse_mesh_config(struct genl_info *info,
4769                                      struct mesh_config *cfg,
4770                                      u32 *mask_out)
4771 {
4772         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4773         u32 mask = 0;
4774
4775 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4776 do {                                                                        \
4777         if (tb[attr]) {                                                     \
4778                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4779                         return -EINVAL;                                     \
4780                 cfg->param = fn(tb[attr]);                                  \
4781                 mask |= (1 << (attr - 1));                                  \
4782         }                                                                   \
4783 } while (0)
4784
4785
4786         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4787                 return -EINVAL;
4788         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4789                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4790                              nl80211_meshconf_params_policy))
4791                 return -EINVAL;
4792
4793         /* This makes sure that there aren't more than 32 mesh config
4794          * parameters (otherwise our bitfield scheme would not work.) */
4795         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4796
4797         /* Fill in the params struct */
4798         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4799                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4800                                   nla_get_u16);
4801         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4802                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4803                                   nla_get_u16);
4804         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4805                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4806                                   nla_get_u16);
4807         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4808                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4809                                   nla_get_u16);
4810         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4811                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4812                                   nla_get_u8);
4813         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4814                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4815         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4816                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4817                                   nla_get_u8);
4818         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4819                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4820                                   nla_get_u8);
4821         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4822                                   1, 255, mask,
4823                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4824                                   nla_get_u32);
4825         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4826                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4827                                   nla_get_u8);
4828         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4829                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4830                                   nla_get_u32);
4831         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4832                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4833                                   nla_get_u16);
4834         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4835                                   1, 65535, mask,
4836                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4837                                   nla_get_u32);
4838         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4839                                   1, 65535, mask,
4840                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4841                                   nla_get_u16);
4842         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4843                                   1, 65535, mask,
4844                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4845                                   nla_get_u16);
4846         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4847                                   dot11MeshHWMPnetDiameterTraversalTime,
4848                                   1, 65535, mask,
4849                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4850                                   nla_get_u16);
4851         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4852                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4853                                   nla_get_u8);
4854         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4855                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4856                                   nla_get_u16);
4857         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4858                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4859                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4860                                   nla_get_u8);
4861         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4862                                   mask, NL80211_MESHCONF_FORWARDING,
4863                                   nla_get_u8);
4864         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4865                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4866                                   nla_get_s32);
4867         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4868                                   mask, NL80211_MESHCONF_HT_OPMODE,
4869                                   nla_get_u16);
4870         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4871                                   1, 65535, mask,
4872                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4873                                   nla_get_u32);
4874         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4875                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4876                                   nla_get_u16);
4877         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4878                                   dot11MeshHWMPconfirmationInterval,
4879                                   1, 65535, mask,
4880                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4881                                   nla_get_u16);
4882         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4883                                   NL80211_MESH_POWER_ACTIVE,
4884                                   NL80211_MESH_POWER_MAX,
4885                                   mask, NL80211_MESHCONF_POWER_MODE,
4886                                   nla_get_u32);
4887         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4888                                   0, 65535, mask,
4889                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4890         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4891                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4892                                   nla_get_u32);
4893         if (mask_out)
4894                 *mask_out = mask;
4895
4896         return 0;
4897
4898 #undef FILL_IN_MESH_PARAM_IF_SET
4899 }
4900
4901 static int nl80211_parse_mesh_setup(struct genl_info *info,
4902                                      struct mesh_setup *setup)
4903 {
4904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4905         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4906
4907         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4908                 return -EINVAL;
4909         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4910                              info->attrs[NL80211_ATTR_MESH_SETUP],
4911                              nl80211_mesh_setup_params_policy))
4912                 return -EINVAL;
4913
4914         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4915                 setup->sync_method =
4916                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4917                  IEEE80211_SYNC_METHOD_VENDOR :
4918                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4919
4920         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4921                 setup->path_sel_proto =
4922                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4923                  IEEE80211_PATH_PROTOCOL_VENDOR :
4924                  IEEE80211_PATH_PROTOCOL_HWMP;
4925
4926         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4927                 setup->path_metric =
4928                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4929                  IEEE80211_PATH_METRIC_VENDOR :
4930                  IEEE80211_PATH_METRIC_AIRTIME;
4931
4932
4933         if (tb[NL80211_MESH_SETUP_IE]) {
4934                 struct nlattr *ieattr =
4935                         tb[NL80211_MESH_SETUP_IE];
4936                 if (!is_valid_ie_attr(ieattr))
4937                         return -EINVAL;
4938                 setup->ie = nla_data(ieattr);
4939                 setup->ie_len = nla_len(ieattr);
4940         }
4941         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4942             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4943                 return -EINVAL;
4944         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4945         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4946         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4947         if (setup->is_secure)
4948                 setup->user_mpm = true;
4949
4950         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4951                 if (!setup->user_mpm)
4952                         return -EINVAL;
4953                 setup->auth_id =
4954                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4955         }
4956
4957         return 0;
4958 }
4959
4960 static int nl80211_update_mesh_config(struct sk_buff *skb,
4961                                       struct genl_info *info)
4962 {
4963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4964         struct net_device *dev = info->user_ptr[1];
4965         struct wireless_dev *wdev = dev->ieee80211_ptr;
4966         struct mesh_config cfg;
4967         u32 mask;
4968         int err;
4969
4970         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4971                 return -EOPNOTSUPP;
4972
4973         if (!rdev->ops->update_mesh_config)
4974                 return -EOPNOTSUPP;
4975
4976         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4977         if (err)
4978                 return err;
4979
4980         wdev_lock(wdev);
4981         if (!wdev->mesh_id_len)
4982                 err = -ENOLINK;
4983
4984         if (!err)
4985                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4986
4987         wdev_unlock(wdev);
4988
4989         return err;
4990 }
4991
4992 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4993 {
4994         const struct ieee80211_regdomain *regdom;
4995         struct sk_buff *msg;
4996         void *hdr = NULL;
4997         struct nlattr *nl_reg_rules;
4998         unsigned int i;
4999
5000         if (!cfg80211_regdomain)
5001                 return -EINVAL;
5002
5003         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5004         if (!msg)
5005                 return -ENOBUFS;
5006
5007         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5008                              NL80211_CMD_GET_REG);
5009         if (!hdr)
5010                 goto put_failure;
5011
5012         if (reg_last_request_cell_base() &&
5013             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5014                         NL80211_USER_REG_HINT_CELL_BASE))
5015                 goto nla_put_failure;
5016
5017         rcu_read_lock();
5018         regdom = rcu_dereference(cfg80211_regdomain);
5019
5020         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5021             (regdom->dfs_region &&
5022              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5023                 goto nla_put_failure_rcu;
5024
5025         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5026         if (!nl_reg_rules)
5027                 goto nla_put_failure_rcu;
5028
5029         for (i = 0; i < regdom->n_reg_rules; i++) {
5030                 struct nlattr *nl_reg_rule;
5031                 const struct ieee80211_reg_rule *reg_rule;
5032                 const struct ieee80211_freq_range *freq_range;
5033                 const struct ieee80211_power_rule *power_rule;
5034
5035                 reg_rule = &regdom->reg_rules[i];
5036                 freq_range = &reg_rule->freq_range;
5037                 power_rule = &reg_rule->power_rule;
5038
5039                 nl_reg_rule = nla_nest_start(msg, i);
5040                 if (!nl_reg_rule)
5041                         goto nla_put_failure_rcu;
5042
5043                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5044                                 reg_rule->flags) ||
5045                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5046                                 freq_range->start_freq_khz) ||
5047                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5048                                 freq_range->end_freq_khz) ||
5049                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5050                                 freq_range->max_bandwidth_khz) ||
5051                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5052                                 power_rule->max_antenna_gain) ||
5053                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5054                                 power_rule->max_eirp))
5055                         goto nla_put_failure_rcu;
5056
5057                 nla_nest_end(msg, nl_reg_rule);
5058         }
5059         rcu_read_unlock();
5060
5061         nla_nest_end(msg, nl_reg_rules);
5062
5063         genlmsg_end(msg, hdr);
5064         return genlmsg_reply(msg, info);
5065
5066 nla_put_failure_rcu:
5067         rcu_read_unlock();
5068 nla_put_failure:
5069         genlmsg_cancel(msg, hdr);
5070 put_failure:
5071         nlmsg_free(msg);
5072         return -EMSGSIZE;
5073 }
5074
5075 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5076 {
5077         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5078         struct nlattr *nl_reg_rule;
5079         char *alpha2 = NULL;
5080         int rem_reg_rules = 0, r = 0;
5081         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5082         u8 dfs_region = 0;
5083         struct ieee80211_regdomain *rd = NULL;
5084
5085         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5086                 return -EINVAL;
5087
5088         if (!info->attrs[NL80211_ATTR_REG_RULES])
5089                 return -EINVAL;
5090
5091         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5092
5093         if (info->attrs[NL80211_ATTR_DFS_REGION])
5094                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5095
5096         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5097                             rem_reg_rules) {
5098                 num_rules++;
5099                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5100                         return -EINVAL;
5101         }
5102
5103         size_of_regd = sizeof(struct ieee80211_regdomain) +
5104                        num_rules * sizeof(struct ieee80211_reg_rule);
5105
5106         rd = kzalloc(size_of_regd, GFP_KERNEL);
5107         if (!rd)
5108                 return -ENOMEM;
5109
5110         rd->n_reg_rules = num_rules;
5111         rd->alpha2[0] = alpha2[0];
5112         rd->alpha2[1] = alpha2[1];
5113
5114         /*
5115          * Disable DFS master mode if the DFS region was
5116          * not supported or known on this kernel.
5117          */
5118         if (reg_supported_dfs_region(dfs_region))
5119                 rd->dfs_region = dfs_region;
5120
5121         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5122                             rem_reg_rules) {
5123                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5124                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5125                           reg_rule_policy);
5126                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5127                 if (r)
5128                         goto bad_reg;
5129
5130                 rule_idx++;
5131
5132                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5133                         r = -EINVAL;
5134                         goto bad_reg;
5135                 }
5136         }
5137
5138         r = set_regdom(rd);
5139         /* set_regdom took ownership */
5140         rd = NULL;
5141
5142  bad_reg:
5143         kfree(rd);
5144         return r;
5145 }
5146
5147 static int validate_scan_freqs(struct nlattr *freqs)
5148 {
5149         struct nlattr *attr1, *attr2;
5150         int n_channels = 0, tmp1, tmp2;
5151
5152         nla_for_each_nested(attr1, freqs, tmp1) {
5153                 n_channels++;
5154                 /*
5155                  * Some hardware has a limited channel list for
5156                  * scanning, and it is pretty much nonsensical
5157                  * to scan for a channel twice, so disallow that
5158                  * and don't require drivers to check that the
5159                  * channel list they get isn't longer than what
5160                  * they can scan, as long as they can scan all
5161                  * the channels they registered at once.
5162                  */
5163                 nla_for_each_nested(attr2, freqs, tmp2)
5164                         if (attr1 != attr2 &&
5165                             nla_get_u32(attr1) == nla_get_u32(attr2))
5166                                 return 0;
5167         }
5168
5169         return n_channels;
5170 }
5171
5172 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5173 {
5174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5175         struct wireless_dev *wdev = info->user_ptr[1];
5176         struct cfg80211_scan_request *request;
5177         struct nlattr *attr;
5178         struct wiphy *wiphy;
5179         int err, tmp, n_ssids = 0, n_channels, i;
5180         size_t ie_len;
5181
5182         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5183                 return -EINVAL;
5184
5185         wiphy = &rdev->wiphy;
5186
5187         if (!rdev->ops->scan)
5188                 return -EOPNOTSUPP;
5189
5190         if (rdev->scan_req) {
5191                 err = -EBUSY;
5192                 goto unlock;
5193         }
5194
5195         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5196                 n_channels = validate_scan_freqs(
5197                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5198                 if (!n_channels) {
5199                         err = -EINVAL;
5200                         goto unlock;
5201                 }
5202         } else {
5203                 enum ieee80211_band band;
5204                 n_channels = 0;
5205
5206                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5207                         if (wiphy->bands[band])
5208                                 n_channels += wiphy->bands[band]->n_channels;
5209         }
5210
5211         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5212                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5213                         n_ssids++;
5214
5215         if (n_ssids > wiphy->max_scan_ssids) {
5216                 err = -EINVAL;
5217                 goto unlock;
5218         }
5219
5220         if (info->attrs[NL80211_ATTR_IE])
5221                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5222         else
5223                 ie_len = 0;
5224
5225         if (ie_len > wiphy->max_scan_ie_len) {
5226                 err = -EINVAL;
5227                 goto unlock;
5228         }
5229
5230         request = kzalloc(sizeof(*request)
5231                         + sizeof(*request->ssids) * n_ssids
5232                         + sizeof(*request->channels) * n_channels
5233                         + ie_len, GFP_KERNEL);
5234         if (!request) {
5235                 err = -ENOMEM;
5236                 goto unlock;
5237         }
5238
5239         if (n_ssids)
5240                 request->ssids = (void *)&request->channels[n_channels];
5241         request->n_ssids = n_ssids;
5242         if (ie_len) {
5243                 if (request->ssids)
5244                         request->ie = (void *)(request->ssids + n_ssids);
5245                 else
5246                         request->ie = (void *)(request->channels + n_channels);
5247         }
5248
5249         i = 0;
5250         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5251                 /* user specified, bail out if channel not found */
5252                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5253                         struct ieee80211_channel *chan;
5254
5255                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5256
5257                         if (!chan) {
5258                                 err = -EINVAL;
5259                                 goto out_free;
5260                         }
5261
5262                         /* ignore disabled channels */
5263                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5264                                 continue;
5265
5266                         request->channels[i] = chan;
5267                         i++;
5268                 }
5269         } else {
5270                 enum ieee80211_band band;
5271
5272                 /* all channels */
5273                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5274                         int j;
5275                         if (!wiphy->bands[band])
5276                                 continue;
5277                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5278                                 struct ieee80211_channel *chan;
5279
5280                                 chan = &wiphy->bands[band]->channels[j];
5281
5282                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5283                                         continue;
5284
5285                                 request->channels[i] = chan;
5286                                 i++;
5287                         }
5288                 }
5289         }
5290
5291         if (!i) {
5292                 err = -EINVAL;
5293                 goto out_free;
5294         }
5295
5296         request->n_channels = i;
5297
5298         i = 0;
5299         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5300                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5301                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5302                                 err = -EINVAL;
5303                                 goto out_free;
5304                         }
5305                         request->ssids[i].ssid_len = nla_len(attr);
5306                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5307                         i++;
5308                 }
5309         }
5310
5311         if (info->attrs[NL80211_ATTR_IE]) {
5312                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5313                 memcpy((void *)request->ie,
5314                        nla_data(info->attrs[NL80211_ATTR_IE]),
5315                        request->ie_len);
5316         }
5317
5318         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5319                 if (wiphy->bands[i])
5320                         request->rates[i] =
5321                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5322
5323         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5324                 nla_for_each_nested(attr,
5325                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5326                                     tmp) {
5327                         enum ieee80211_band band = nla_type(attr);
5328
5329                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5330                                 err = -EINVAL;
5331                                 goto out_free;
5332                         }
5333                         err = ieee80211_get_ratemask(wiphy->bands[band],
5334                                                      nla_data(attr),
5335                                                      nla_len(attr),
5336                                                      &request->rates[band]);
5337                         if (err)
5338                                 goto out_free;
5339                 }
5340         }
5341
5342         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5343                 request->flags = nla_get_u32(
5344                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5345                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5346                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5347                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5348                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5349                         err = -EOPNOTSUPP;
5350                         goto out_free;
5351                 }
5352         }
5353
5354         request->no_cck =
5355                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5356
5357         request->wdev = wdev;
5358         request->wiphy = &rdev->wiphy;
5359         request->scan_start = jiffies;
5360
5361         rdev->scan_req = request;
5362         err = rdev_scan(rdev, request);
5363
5364         if (!err) {
5365                 nl80211_send_scan_start(rdev, wdev);
5366                 if (wdev->netdev)
5367                         dev_hold(wdev->netdev);
5368         } else {
5369  out_free:
5370                 rdev->scan_req = NULL;
5371                 kfree(request);
5372         }
5373
5374  unlock:
5375         return err;
5376 }
5377
5378 static int nl80211_start_sched_scan(struct sk_buff *skb,
5379                                     struct genl_info *info)
5380 {
5381         struct cfg80211_sched_scan_request *request;
5382         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5383         struct net_device *dev = info->user_ptr[1];
5384         struct nlattr *attr;
5385         struct wiphy *wiphy;
5386         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5387         u32 interval;
5388         enum ieee80211_band band;
5389         size_t ie_len;
5390         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5391
5392         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5393             !rdev->ops->sched_scan_start)
5394                 return -EOPNOTSUPP;
5395
5396         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5397                 return -EINVAL;
5398
5399         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5400                 return -EINVAL;
5401
5402         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5403         if (interval == 0)
5404                 return -EINVAL;
5405
5406         wiphy = &rdev->wiphy;
5407
5408         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5409                 n_channels = validate_scan_freqs(
5410                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5411                 if (!n_channels)
5412                         return -EINVAL;
5413         } else {
5414                 n_channels = 0;
5415
5416                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5417                         if (wiphy->bands[band])
5418                                 n_channels += wiphy->bands[band]->n_channels;
5419         }
5420
5421         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5422                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5423                                     tmp)
5424                         n_ssids++;
5425
5426         if (n_ssids > wiphy->max_sched_scan_ssids)
5427                 return -EINVAL;
5428
5429         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5430                 nla_for_each_nested(attr,
5431                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5432                                     tmp)
5433                         n_match_sets++;
5434
5435         if (n_match_sets > wiphy->max_match_sets)
5436                 return -EINVAL;
5437
5438         if (info->attrs[NL80211_ATTR_IE])
5439                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5440         else
5441                 ie_len = 0;
5442
5443         if (ie_len > wiphy->max_sched_scan_ie_len)
5444                 return -EINVAL;
5445
5446         if (rdev->sched_scan_req) {
5447                 err = -EINPROGRESS;
5448                 goto out;
5449         }
5450
5451         request = kzalloc(sizeof(*request)
5452                         + sizeof(*request->ssids) * n_ssids
5453                         + sizeof(*request->match_sets) * n_match_sets
5454                         + sizeof(*request->channels) * n_channels
5455                         + ie_len, GFP_KERNEL);
5456         if (!request) {
5457                 err = -ENOMEM;
5458                 goto out;
5459         }
5460
5461         if (n_ssids)
5462                 request->ssids = (void *)&request->channels[n_channels];
5463         request->n_ssids = n_ssids;
5464         if (ie_len) {
5465                 if (request->ssids)
5466                         request->ie = (void *)(request->ssids + n_ssids);
5467                 else
5468                         request->ie = (void *)(request->channels + n_channels);
5469         }
5470
5471         if (n_match_sets) {
5472                 if (request->ie)
5473                         request->match_sets = (void *)(request->ie + ie_len);
5474                 else if (request->ssids)
5475                         request->match_sets =
5476                                 (void *)(request->ssids + n_ssids);
5477                 else
5478                         request->match_sets =
5479                                 (void *)(request->channels + n_channels);
5480         }
5481         request->n_match_sets = n_match_sets;
5482
5483         i = 0;
5484         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5485                 /* user specified, bail out if channel not found */
5486                 nla_for_each_nested(attr,
5487                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5488                                     tmp) {
5489                         struct ieee80211_channel *chan;
5490
5491                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5492
5493                         if (!chan) {
5494                                 err = -EINVAL;
5495                                 goto out_free;
5496                         }
5497
5498                         /* ignore disabled channels */
5499                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5500                                 continue;
5501
5502                         request->channels[i] = chan;
5503                         i++;
5504                 }
5505         } else {
5506                 /* all channels */
5507                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5508                         int j;
5509                         if (!wiphy->bands[band])
5510                                 continue;
5511                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5512                                 struct ieee80211_channel *chan;
5513
5514                                 chan = &wiphy->bands[band]->channels[j];
5515
5516                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5517                                         continue;
5518
5519                                 request->channels[i] = chan;
5520                                 i++;
5521                         }
5522                 }
5523         }
5524
5525         if (!i) {
5526                 err = -EINVAL;
5527                 goto out_free;
5528         }
5529
5530         request->n_channels = i;
5531
5532         i = 0;
5533         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5534                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5535                                     tmp) {
5536                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5537                                 err = -EINVAL;
5538                                 goto out_free;
5539                         }
5540                         request->ssids[i].ssid_len = nla_len(attr);
5541                         memcpy(request->ssids[i].ssid, nla_data(attr),
5542                                nla_len(attr));
5543                         i++;
5544                 }
5545         }
5546
5547         i = 0;
5548         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5549                 nla_for_each_nested(attr,
5550                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5551                                     tmp) {
5552                         struct nlattr *ssid, *rssi;
5553
5554                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5555                                   nla_data(attr), nla_len(attr),
5556                                   nl80211_match_policy);
5557                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5558                         if (ssid) {
5559                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5560                                         err = -EINVAL;
5561                                         goto out_free;
5562                                 }
5563                                 memcpy(request->match_sets[i].ssid.ssid,
5564                                        nla_data(ssid), nla_len(ssid));
5565                                 request->match_sets[i].ssid.ssid_len =
5566                                         nla_len(ssid);
5567                         }
5568                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5569                         if (rssi)
5570                                 request->rssi_thold = nla_get_u32(rssi);
5571                         else
5572                                 request->rssi_thold =
5573                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5574                         i++;
5575                 }
5576         }
5577
5578         if (info->attrs[NL80211_ATTR_IE]) {
5579                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5580                 memcpy((void *)request->ie,
5581                        nla_data(info->attrs[NL80211_ATTR_IE]),
5582                        request->ie_len);
5583         }
5584
5585         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5586                 request->flags = nla_get_u32(
5587                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5588                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5589                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5590                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5591                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5592                         err = -EOPNOTSUPP;
5593                         goto out_free;
5594                 }
5595         }
5596
5597         request->dev = dev;
5598         request->wiphy = &rdev->wiphy;
5599         request->interval = interval;
5600         request->scan_start = jiffies;
5601
5602         err = rdev_sched_scan_start(rdev, dev, request);
5603         if (!err) {
5604                 rdev->sched_scan_req = request;
5605                 nl80211_send_sched_scan(rdev, dev,
5606                                         NL80211_CMD_START_SCHED_SCAN);
5607                 goto out;
5608         }
5609
5610 out_free:
5611         kfree(request);
5612 out:
5613         return err;
5614 }
5615
5616 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5617                                    struct genl_info *info)
5618 {
5619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5620
5621         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5622             !rdev->ops->sched_scan_stop)
5623                 return -EOPNOTSUPP;
5624
5625         return __cfg80211_stop_sched_scan(rdev, false);
5626 }
5627
5628 static int nl80211_start_radar_detection(struct sk_buff *skb,
5629                                          struct genl_info *info)
5630 {
5631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5632         struct net_device *dev = info->user_ptr[1];
5633         struct wireless_dev *wdev = dev->ieee80211_ptr;
5634         struct cfg80211_chan_def chandef;
5635         int err;
5636
5637         err = nl80211_parse_chandef(rdev, info, &chandef);
5638         if (err)
5639                 return err;
5640
5641         if (netif_carrier_ok(dev))
5642                 return -EBUSY;
5643
5644         if (wdev->cac_started)
5645                 return -EBUSY;
5646
5647         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5648         if (err < 0)
5649                 return err;
5650
5651         if (err == 0)
5652                 return -EINVAL;
5653
5654         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5655                 return -EINVAL;
5656
5657         if (!rdev->ops->start_radar_detection)
5658                 return -EOPNOTSUPP;
5659
5660         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5661                                            chandef.chan, CHAN_MODE_SHARED,
5662                                            BIT(chandef.width));
5663         if (err)
5664                 return err;
5665
5666         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5667         if (!err) {
5668                 wdev->channel = chandef.chan;
5669                 wdev->cac_started = true;
5670                 wdev->cac_start_time = jiffies;
5671         }
5672         return err;
5673 }
5674
5675 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5676 {
5677         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5678         struct net_device *dev = info->user_ptr[1];
5679         struct wireless_dev *wdev = dev->ieee80211_ptr;
5680         struct cfg80211_csa_settings params;
5681         /* csa_attrs is defined static to avoid waste of stack size - this
5682          * function is called under RTNL lock, so this should not be a problem.
5683          */
5684         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5685         u8 radar_detect_width = 0;
5686         int err;
5687         bool need_new_beacon = false;
5688
5689         if (!rdev->ops->channel_switch ||
5690             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5691                 return -EOPNOTSUPP;
5692
5693         switch (dev->ieee80211_ptr->iftype) {
5694         case NL80211_IFTYPE_AP:
5695         case NL80211_IFTYPE_P2P_GO:
5696                 need_new_beacon = true;
5697
5698                 /* useless if AP is not running */
5699                 if (!wdev->beacon_interval)
5700                         return -EINVAL;
5701                 break;
5702         case NL80211_IFTYPE_ADHOC:
5703         case NL80211_IFTYPE_MESH_POINT:
5704                 break;
5705         default:
5706                 return -EOPNOTSUPP;
5707         }
5708
5709         memset(&params, 0, sizeof(params));
5710
5711         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5712             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5713                 return -EINVAL;
5714
5715         /* only important for AP, IBSS and mesh create IEs internally */
5716         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5717                 return -EINVAL;
5718
5719         params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5720
5721         if (!need_new_beacon)
5722                 goto skip_beacons;
5723
5724         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5725         if (err)
5726                 return err;
5727
5728         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5729                                info->attrs[NL80211_ATTR_CSA_IES],
5730                                nl80211_policy);
5731         if (err)
5732                 return err;
5733
5734         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5735         if (err)
5736                 return err;
5737
5738         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5739                 return -EINVAL;
5740
5741         params.counter_offset_beacon =
5742                 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5743         if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5744                 return -EINVAL;
5745
5746         /* sanity check - counters should be the same */
5747         if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5748             params.count)
5749                 return -EINVAL;
5750
5751         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5752                 params.counter_offset_presp =
5753                         nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5754                 if (params.counter_offset_presp >=
5755                     params.beacon_csa.probe_resp_len)
5756                         return -EINVAL;
5757
5758                 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5759                     params.count)
5760                         return -EINVAL;
5761         }
5762
5763 skip_beacons:
5764         err = nl80211_parse_chandef(rdev, info, &params.chandef);
5765         if (err)
5766                 return err;
5767
5768         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5769                 return -EINVAL;
5770
5771         if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
5772             dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
5773             dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
5774                 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5775                                                     &params.chandef);
5776                 if (err < 0) {
5777                         return err;
5778                 } else if (err) {
5779                         radar_detect_width = BIT(params.chandef.width);
5780                         params.radar_required = true;
5781                 }
5782         }
5783
5784         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5785                                            params.chandef.chan,
5786                                            CHAN_MODE_SHARED,
5787                                            radar_detect_width);
5788         if (err)
5789                 return err;
5790
5791         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5792                 params.block_tx = true;
5793
5794         return rdev_channel_switch(rdev, dev, &params);
5795 }
5796
5797 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5798                             u32 seq, int flags,
5799                             struct cfg80211_registered_device *rdev,
5800                             struct wireless_dev *wdev,
5801                             struct cfg80211_internal_bss *intbss)
5802 {
5803         struct cfg80211_bss *res = &intbss->pub;
5804         const struct cfg80211_bss_ies *ies;
5805         void *hdr;
5806         struct nlattr *bss;
5807         bool tsf = false;
5808
5809         ASSERT_WDEV_LOCK(wdev);
5810
5811         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5812                              NL80211_CMD_NEW_SCAN_RESULTS);
5813         if (!hdr)
5814                 return -1;
5815
5816         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5817
5818         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5819                 goto nla_put_failure;
5820         if (wdev->netdev &&
5821             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5822                 goto nla_put_failure;
5823         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5824                 goto nla_put_failure;
5825
5826         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5827         if (!bss)
5828                 goto nla_put_failure;
5829         if ((!is_zero_ether_addr(res->bssid) &&
5830              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5831                 goto nla_put_failure;
5832
5833         rcu_read_lock();
5834         ies = rcu_dereference(res->ies);
5835         if (ies) {
5836                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5837                         goto fail_unlock_rcu;
5838                 tsf = true;
5839                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5840                                         ies->len, ies->data))
5841                         goto fail_unlock_rcu;
5842         }
5843         ies = rcu_dereference(res->beacon_ies);
5844         if (ies) {
5845                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5846                         goto fail_unlock_rcu;
5847                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5848                                         ies->len, ies->data))
5849                         goto fail_unlock_rcu;
5850         }
5851         rcu_read_unlock();
5852
5853         if (res->beacon_interval &&
5854             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5855                 goto nla_put_failure;
5856         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5857             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5858             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5859             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5860                         jiffies_to_msecs(jiffies - intbss->ts)))
5861                 goto nla_put_failure;
5862
5863         switch (rdev->wiphy.signal_type) {
5864         case CFG80211_SIGNAL_TYPE_MBM:
5865                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5866                         goto nla_put_failure;
5867                 break;
5868         case CFG80211_SIGNAL_TYPE_UNSPEC:
5869                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5870                         goto nla_put_failure;
5871                 break;
5872         default:
5873                 break;
5874         }
5875
5876         switch (wdev->iftype) {
5877         case NL80211_IFTYPE_P2P_CLIENT:
5878         case NL80211_IFTYPE_STATION:
5879                 if (intbss == wdev->current_bss &&
5880                     nla_put_u32(msg, NL80211_BSS_STATUS,
5881                                 NL80211_BSS_STATUS_ASSOCIATED))
5882                         goto nla_put_failure;
5883                 break;
5884         case NL80211_IFTYPE_ADHOC:
5885                 if (intbss == wdev->current_bss &&
5886                     nla_put_u32(msg, NL80211_BSS_STATUS,
5887                                 NL80211_BSS_STATUS_IBSS_JOINED))
5888                         goto nla_put_failure;
5889                 break;
5890         default:
5891                 break;
5892         }
5893
5894         nla_nest_end(msg, bss);
5895
5896         return genlmsg_end(msg, hdr);
5897
5898  fail_unlock_rcu:
5899         rcu_read_unlock();
5900  nla_put_failure:
5901         genlmsg_cancel(msg, hdr);
5902         return -EMSGSIZE;
5903 }
5904
5905 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5906 {
5907         struct cfg80211_registered_device *rdev;
5908         struct cfg80211_internal_bss *scan;
5909         struct wireless_dev *wdev;
5910         int start = cb->args[2], idx = 0;
5911         int err;
5912
5913         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5914         if (err)
5915                 return err;
5916
5917         wdev_lock(wdev);
5918         spin_lock_bh(&rdev->bss_lock);
5919         cfg80211_bss_expire(rdev);
5920
5921         cb->seq = rdev->bss_generation;
5922
5923         list_for_each_entry(scan, &rdev->bss_list, list) {
5924                 if (++idx <= start)
5925                         continue;
5926                 if (nl80211_send_bss(skb, cb,
5927                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5928                                 rdev, wdev, scan) < 0) {
5929                         idx--;
5930                         break;
5931                 }
5932         }
5933
5934         spin_unlock_bh(&rdev->bss_lock);
5935         wdev_unlock(wdev);
5936
5937         cb->args[2] = idx;
5938         nl80211_finish_wdev_dump(rdev);
5939
5940         return skb->len;
5941 }
5942
5943 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5944                                 int flags, struct net_device *dev,
5945                                 struct survey_info *survey)
5946 {
5947         void *hdr;
5948         struct nlattr *infoattr;
5949
5950         hdr = nl80211hdr_put(msg, portid, seq, flags,
5951                              NL80211_CMD_NEW_SURVEY_RESULTS);
5952         if (!hdr)
5953                 return -ENOMEM;
5954
5955         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5956                 goto nla_put_failure;
5957
5958         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5959         if (!infoattr)
5960                 goto nla_put_failure;
5961
5962         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5963                         survey->channel->center_freq))
5964                 goto nla_put_failure;
5965
5966         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5967             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5968                 goto nla_put_failure;
5969         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5970             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5971                 goto nla_put_failure;
5972         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5973             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5974                         survey->channel_time))
5975                 goto nla_put_failure;
5976         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5977             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5978                         survey->channel_time_busy))
5979                 goto nla_put_failure;
5980         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5981             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5982                         survey->channel_time_ext_busy))
5983                 goto nla_put_failure;
5984         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5985             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5986                         survey->channel_time_rx))
5987                 goto nla_put_failure;
5988         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5989             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5990                         survey->channel_time_tx))
5991                 goto nla_put_failure;
5992
5993         nla_nest_end(msg, infoattr);
5994
5995         return genlmsg_end(msg, hdr);
5996
5997  nla_put_failure:
5998         genlmsg_cancel(msg, hdr);
5999         return -EMSGSIZE;
6000 }
6001
6002 static int nl80211_dump_survey(struct sk_buff *skb,
6003                         struct netlink_callback *cb)
6004 {
6005         struct survey_info survey;
6006         struct cfg80211_registered_device *dev;
6007         struct wireless_dev *wdev;
6008         int survey_idx = cb->args[2];
6009         int res;
6010
6011         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6012         if (res)
6013                 return res;
6014
6015         if (!wdev->netdev) {
6016                 res = -EINVAL;
6017                 goto out_err;
6018         }
6019
6020         if (!dev->ops->dump_survey) {
6021                 res = -EOPNOTSUPP;
6022                 goto out_err;
6023         }
6024
6025         while (1) {
6026                 struct ieee80211_channel *chan;
6027
6028                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6029                 if (res == -ENOENT)
6030                         break;
6031                 if (res)
6032                         goto out_err;
6033
6034                 /* Survey without a channel doesn't make sense */
6035                 if (!survey.channel) {
6036                         res = -EINVAL;
6037                         goto out;
6038                 }
6039
6040                 chan = ieee80211_get_channel(&dev->wiphy,
6041                                              survey.channel->center_freq);
6042                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6043                         survey_idx++;
6044                         continue;
6045                 }
6046
6047                 if (nl80211_send_survey(skb,
6048                                 NETLINK_CB(cb->skb).portid,
6049                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6050                                 wdev->netdev, &survey) < 0)
6051                         goto out;
6052                 survey_idx++;
6053         }
6054
6055  out:
6056         cb->args[2] = survey_idx;
6057         res = skb->len;
6058  out_err:
6059         nl80211_finish_wdev_dump(dev);
6060         return res;
6061 }
6062
6063 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6064 {
6065         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6066                                   NL80211_WPA_VERSION_2));
6067 }
6068
6069 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6070 {
6071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6072         struct net_device *dev = info->user_ptr[1];
6073         struct ieee80211_channel *chan;
6074         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6075         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6076         enum nl80211_auth_type auth_type;
6077         struct key_parse key;
6078         bool local_state_change;
6079
6080         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6081                 return -EINVAL;
6082
6083         if (!info->attrs[NL80211_ATTR_MAC])
6084                 return -EINVAL;
6085
6086         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6087                 return -EINVAL;
6088
6089         if (!info->attrs[NL80211_ATTR_SSID])
6090                 return -EINVAL;
6091
6092         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6093                 return -EINVAL;
6094
6095         err = nl80211_parse_key(info, &key);
6096         if (err)
6097                 return err;
6098
6099         if (key.idx >= 0) {
6100                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6101                         return -EINVAL;
6102                 if (!key.p.key || !key.p.key_len)
6103                         return -EINVAL;
6104                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6105                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6106                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6107                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6108                         return -EINVAL;
6109                 if (key.idx > 4)
6110                         return -EINVAL;
6111         } else {
6112                 key.p.key_len = 0;
6113                 key.p.key = NULL;
6114         }
6115
6116         if (key.idx >= 0) {
6117                 int i;
6118                 bool ok = false;
6119                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6120                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6121                                 ok = true;
6122                                 break;
6123                         }
6124                 }
6125                 if (!ok)
6126                         return -EINVAL;
6127         }
6128
6129         if (!rdev->ops->auth)
6130                 return -EOPNOTSUPP;
6131
6132         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6133             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6134                 return -EOPNOTSUPP;
6135
6136         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6137         chan = ieee80211_get_channel(&rdev->wiphy,
6138                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6139         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6140                 return -EINVAL;
6141
6142         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6143         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6144
6145         if (info->attrs[NL80211_ATTR_IE]) {
6146                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6147                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6148         }
6149
6150         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6151         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6152                 return -EINVAL;
6153
6154         if (auth_type == NL80211_AUTHTYPE_SAE &&
6155             !info->attrs[NL80211_ATTR_SAE_DATA])
6156                 return -EINVAL;
6157
6158         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6159                 if (auth_type != NL80211_AUTHTYPE_SAE)
6160                         return -EINVAL;
6161                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6162                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6163                 /* need to include at least Auth Transaction and Status Code */
6164                 if (sae_data_len < 4)
6165                         return -EINVAL;
6166         }
6167
6168         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6169
6170         /*
6171          * Since we no longer track auth state, ignore
6172          * requests to only change local state.
6173          */
6174         if (local_state_change)
6175                 return 0;
6176
6177         wdev_lock(dev->ieee80211_ptr);
6178         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6179                                  ssid, ssid_len, ie, ie_len,
6180                                  key.p.key, key.p.key_len, key.idx,
6181                                  sae_data, sae_data_len);
6182         wdev_unlock(dev->ieee80211_ptr);
6183         return err;
6184 }
6185
6186 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6187                                    struct genl_info *info,
6188                                    struct cfg80211_crypto_settings *settings,
6189                                    int cipher_limit)
6190 {
6191         memset(settings, 0, sizeof(*settings));
6192
6193         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6194
6195         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6196                 u16 proto;
6197                 proto = nla_get_u16(
6198                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6199                 settings->control_port_ethertype = cpu_to_be16(proto);
6200                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6201                     proto != ETH_P_PAE)
6202                         return -EINVAL;
6203                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6204                         settings->control_port_no_encrypt = true;
6205         } else
6206                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6207
6208         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6209                 void *data;
6210                 int len, i;
6211
6212                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6213                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6214                 settings->n_ciphers_pairwise = len / sizeof(u32);
6215
6216                 if (len % sizeof(u32))
6217                         return -EINVAL;
6218
6219                 if (settings->n_ciphers_pairwise > cipher_limit)
6220                         return -EINVAL;
6221
6222                 memcpy(settings->ciphers_pairwise, data, len);
6223
6224                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6225                         if (!cfg80211_supported_cipher_suite(
6226                                         &rdev->wiphy,
6227                                         settings->ciphers_pairwise[i]))
6228                                 return -EINVAL;
6229         }
6230
6231         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6232                 settings->cipher_group =
6233                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6234                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6235                                                      settings->cipher_group))
6236                         return -EINVAL;
6237         }
6238
6239         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6240                 settings->wpa_versions =
6241                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6242                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6243                         return -EINVAL;
6244         }
6245
6246         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6247                 void *data;
6248                 int len;
6249
6250                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6251                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6252                 settings->n_akm_suites = len / sizeof(u32);
6253
6254                 if (len % sizeof(u32))
6255                         return -EINVAL;
6256
6257                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6258                         return -EINVAL;
6259
6260                 memcpy(settings->akm_suites, data, len);
6261         }
6262
6263         return 0;
6264 }
6265
6266 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6267 {
6268         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6269         struct net_device *dev = info->user_ptr[1];
6270         struct ieee80211_channel *chan;
6271         struct cfg80211_assoc_request req = {};
6272         const u8 *bssid, *ssid;
6273         int err, ssid_len = 0;
6274
6275         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6276                 return -EINVAL;
6277
6278         if (!info->attrs[NL80211_ATTR_MAC] ||
6279             !info->attrs[NL80211_ATTR_SSID] ||
6280             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6281                 return -EINVAL;
6282
6283         if (!rdev->ops->assoc)
6284                 return -EOPNOTSUPP;
6285
6286         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6287             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6288                 return -EOPNOTSUPP;
6289
6290         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6291
6292         chan = ieee80211_get_channel(&rdev->wiphy,
6293                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6294         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6295                 return -EINVAL;
6296
6297         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6298         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6299
6300         if (info->attrs[NL80211_ATTR_IE]) {
6301                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6302                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6303         }
6304
6305         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6306                 enum nl80211_mfp mfp =
6307                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6308                 if (mfp == NL80211_MFP_REQUIRED)
6309                         req.use_mfp = true;
6310                 else if (mfp != NL80211_MFP_NO)
6311                         return -EINVAL;
6312         }
6313
6314         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6315                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6316
6317         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6318                 req.flags |= ASSOC_REQ_DISABLE_HT;
6319
6320         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6321                 memcpy(&req.ht_capa_mask,
6322                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6323                        sizeof(req.ht_capa_mask));
6324
6325         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6326                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6327                         return -EINVAL;
6328                 memcpy(&req.ht_capa,
6329                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6330                        sizeof(req.ht_capa));
6331         }
6332
6333         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6334                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6335
6336         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6337                 memcpy(&req.vht_capa_mask,
6338                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6339                        sizeof(req.vht_capa_mask));
6340
6341         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6342                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6343                         return -EINVAL;
6344                 memcpy(&req.vht_capa,
6345                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6346                        sizeof(req.vht_capa));
6347         }
6348
6349         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6350         if (!err) {
6351                 wdev_lock(dev->ieee80211_ptr);
6352                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6353                                           ssid, ssid_len, &req);
6354                 wdev_unlock(dev->ieee80211_ptr);
6355         }
6356
6357         return err;
6358 }
6359
6360 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6361 {
6362         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6363         struct net_device *dev = info->user_ptr[1];
6364         const u8 *ie = NULL, *bssid;
6365         int ie_len = 0, err;
6366         u16 reason_code;
6367         bool local_state_change;
6368
6369         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6370                 return -EINVAL;
6371
6372         if (!info->attrs[NL80211_ATTR_MAC])
6373                 return -EINVAL;
6374
6375         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6376                 return -EINVAL;
6377
6378         if (!rdev->ops->deauth)
6379                 return -EOPNOTSUPP;
6380
6381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6382             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6383                 return -EOPNOTSUPP;
6384
6385         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6386
6387         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6388         if (reason_code == 0) {
6389                 /* Reason Code 0 is reserved */
6390                 return -EINVAL;
6391         }
6392
6393         if (info->attrs[NL80211_ATTR_IE]) {
6394                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6395                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6396         }
6397
6398         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6399
6400         wdev_lock(dev->ieee80211_ptr);
6401         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6402                                    local_state_change);
6403         wdev_unlock(dev->ieee80211_ptr);
6404         return err;
6405 }
6406
6407 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6408 {
6409         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6410         struct net_device *dev = info->user_ptr[1];
6411         const u8 *ie = NULL, *bssid;
6412         int ie_len = 0, err;
6413         u16 reason_code;
6414         bool local_state_change;
6415
6416         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6417                 return -EINVAL;
6418
6419         if (!info->attrs[NL80211_ATTR_MAC])
6420                 return -EINVAL;
6421
6422         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6423                 return -EINVAL;
6424
6425         if (!rdev->ops->disassoc)
6426                 return -EOPNOTSUPP;
6427
6428         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6429             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6430                 return -EOPNOTSUPP;
6431
6432         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6433
6434         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6435         if (reason_code == 0) {
6436                 /* Reason Code 0 is reserved */
6437                 return -EINVAL;
6438         }
6439
6440         if (info->attrs[NL80211_ATTR_IE]) {
6441                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6442                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6443         }
6444
6445         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6446
6447         wdev_lock(dev->ieee80211_ptr);
6448         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6449                                      local_state_change);
6450         wdev_unlock(dev->ieee80211_ptr);
6451         return err;
6452 }
6453
6454 static bool
6455 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6456                          int mcast_rate[IEEE80211_NUM_BANDS],
6457                          int rateval)
6458 {
6459         struct wiphy *wiphy = &rdev->wiphy;
6460         bool found = false;
6461         int band, i;
6462
6463         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6464                 struct ieee80211_supported_band *sband;
6465
6466                 sband = wiphy->bands[band];
6467                 if (!sband)
6468                         continue;
6469
6470                 for (i = 0; i < sband->n_bitrates; i++) {
6471                         if (sband->bitrates[i].bitrate == rateval) {
6472                                 mcast_rate[band] = i + 1;
6473                                 found = true;
6474                                 break;
6475                         }
6476                 }
6477         }
6478
6479         return found;
6480 }
6481
6482 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6483 {
6484         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6485         struct net_device *dev = info->user_ptr[1];
6486         struct cfg80211_ibss_params ibss;
6487         struct wiphy *wiphy;
6488         struct cfg80211_cached_keys *connkeys = NULL;
6489         int err;
6490
6491         memset(&ibss, 0, sizeof(ibss));
6492
6493         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6494                 return -EINVAL;
6495
6496         if (!info->attrs[NL80211_ATTR_SSID] ||
6497             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6498                 return -EINVAL;
6499
6500         ibss.beacon_interval = 100;
6501
6502         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6503                 ibss.beacon_interval =
6504                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6505                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6506                         return -EINVAL;
6507         }
6508
6509         if (!rdev->ops->join_ibss)
6510                 return -EOPNOTSUPP;
6511
6512         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6513                 return -EOPNOTSUPP;
6514
6515         wiphy = &rdev->wiphy;
6516
6517         if (info->attrs[NL80211_ATTR_MAC]) {
6518                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6519
6520                 if (!is_valid_ether_addr(ibss.bssid))
6521                         return -EINVAL;
6522         }
6523         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6524         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6525
6526         if (info->attrs[NL80211_ATTR_IE]) {
6527                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6528                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6529         }
6530
6531         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6532         if (err)
6533                 return err;
6534
6535         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6536                 return -EINVAL;
6537
6538         switch (ibss.chandef.width) {
6539         case NL80211_CHAN_WIDTH_5:
6540         case NL80211_CHAN_WIDTH_10:
6541         case NL80211_CHAN_WIDTH_20_NOHT:
6542                 break;
6543         case NL80211_CHAN_WIDTH_20:
6544         case NL80211_CHAN_WIDTH_40:
6545                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6546                         break;
6547         default:
6548                 return -EINVAL;
6549         }
6550
6551         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6552         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6553
6554         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6555                 u8 *rates =
6556                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6557                 int n_rates =
6558                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6559                 struct ieee80211_supported_band *sband =
6560                         wiphy->bands[ibss.chandef.chan->band];
6561
6562                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6563                                              &ibss.basic_rates);
6564                 if (err)
6565                         return err;
6566         }
6567
6568         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6569                 memcpy(&ibss.ht_capa_mask,
6570                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6571                        sizeof(ibss.ht_capa_mask));
6572
6573         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6574                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6575                         return -EINVAL;
6576                 memcpy(&ibss.ht_capa,
6577                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6578                        sizeof(ibss.ht_capa));
6579         }
6580
6581         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6582             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6583                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6584                 return -EINVAL;
6585
6586         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6587                 bool no_ht = false;
6588
6589                 connkeys = nl80211_parse_connkeys(rdev,
6590                                           info->attrs[NL80211_ATTR_KEYS],
6591                                           &no_ht);
6592                 if (IS_ERR(connkeys))
6593                         return PTR_ERR(connkeys);
6594
6595                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6596                     no_ht) {
6597                         kfree(connkeys);
6598                         return -EINVAL;
6599                 }
6600         }
6601
6602         ibss.control_port =
6603                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6604
6605         ibss.userspace_handles_dfs =
6606                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6607
6608         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6609         if (err)
6610                 kfree(connkeys);
6611         return err;
6612 }
6613
6614 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6615 {
6616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6617         struct net_device *dev = info->user_ptr[1];
6618
6619         if (!rdev->ops->leave_ibss)
6620                 return -EOPNOTSUPP;
6621
6622         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6623                 return -EOPNOTSUPP;
6624
6625         return cfg80211_leave_ibss(rdev, dev, false);
6626 }
6627
6628 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6629 {
6630         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6631         struct net_device *dev = info->user_ptr[1];
6632         int mcast_rate[IEEE80211_NUM_BANDS];
6633         u32 nla_rate;
6634         int err;
6635
6636         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6637             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6638                 return -EOPNOTSUPP;
6639
6640         if (!rdev->ops->set_mcast_rate)
6641                 return -EOPNOTSUPP;
6642
6643         memset(mcast_rate, 0, sizeof(mcast_rate));
6644
6645         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6646                 return -EINVAL;
6647
6648         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6649         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6650                 return -EINVAL;
6651
6652         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6653
6654         return err;
6655 }
6656
6657
6658 #ifdef CONFIG_NL80211_TESTMODE
6659 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6660         .name = "testmode",
6661 };
6662
6663 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6664 {
6665         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6666         struct wireless_dev *wdev =
6667                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6668         int err;
6669
6670         if (!rdev->ops->testmode_cmd)
6671                 return -EOPNOTSUPP;
6672
6673         if (IS_ERR(wdev)) {
6674                 err = PTR_ERR(wdev);
6675                 if (err != -EINVAL)
6676                         return err;
6677                 wdev = NULL;
6678         } else if (wdev->wiphy != &rdev->wiphy) {
6679                 return -EINVAL;
6680         }
6681
6682         if (!info->attrs[NL80211_ATTR_TESTDATA])
6683                 return -EINVAL;
6684
6685         rdev->testmode_info = info;
6686         err = rdev_testmode_cmd(rdev, wdev,
6687                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6688                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6689         rdev->testmode_info = NULL;
6690
6691         return err;
6692 }
6693
6694 static int nl80211_testmode_dump(struct sk_buff *skb,
6695                                  struct netlink_callback *cb)
6696 {
6697         struct cfg80211_registered_device *rdev;
6698         int err;
6699         long phy_idx;
6700         void *data = NULL;
6701         int data_len = 0;
6702
6703         rtnl_lock();
6704
6705         if (cb->args[0]) {
6706                 /*
6707                  * 0 is a valid index, but not valid for args[0],
6708                  * so we need to offset by 1.
6709                  */
6710                 phy_idx = cb->args[0] - 1;
6711         } else {
6712                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6713                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6714                                   nl80211_policy);
6715                 if (err)
6716                         goto out_err;
6717
6718                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6719                                                   nl80211_fam.attrbuf);
6720                 if (IS_ERR(rdev)) {
6721                         err = PTR_ERR(rdev);
6722                         goto out_err;
6723                 }
6724                 phy_idx = rdev->wiphy_idx;
6725                 rdev = NULL;
6726
6727                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6728                         cb->args[1] =
6729                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6730         }
6731
6732         if (cb->args[1]) {
6733                 data = nla_data((void *)cb->args[1]);
6734                 data_len = nla_len((void *)cb->args[1]);
6735         }
6736
6737         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6738         if (!rdev) {
6739                 err = -ENOENT;
6740                 goto out_err;
6741         }
6742
6743         if (!rdev->ops->testmode_dump) {
6744                 err = -EOPNOTSUPP;
6745                 goto out_err;
6746         }
6747
6748         while (1) {
6749                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6750                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6751                                            NL80211_CMD_TESTMODE);
6752                 struct nlattr *tmdata;
6753
6754                 if (!hdr)
6755                         break;
6756
6757                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6758                         genlmsg_cancel(skb, hdr);
6759                         break;
6760                 }
6761
6762                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6763                 if (!tmdata) {
6764                         genlmsg_cancel(skb, hdr);
6765                         break;
6766                 }
6767                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6768                 nla_nest_end(skb, tmdata);
6769
6770                 if (err == -ENOBUFS || err == -ENOENT) {
6771                         genlmsg_cancel(skb, hdr);
6772                         break;
6773                 } else if (err) {
6774                         genlmsg_cancel(skb, hdr);
6775                         goto out_err;
6776                 }
6777
6778                 genlmsg_end(skb, hdr);
6779         }
6780
6781         err = skb->len;
6782         /* see above */
6783         cb->args[0] = phy_idx + 1;
6784  out_err:
6785         rtnl_unlock();
6786         return err;
6787 }
6788
6789 static struct sk_buff *
6790 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6791                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6792 {
6793         struct sk_buff *skb;
6794         void *hdr;
6795         struct nlattr *data;
6796
6797         skb = nlmsg_new(approxlen + 100, gfp);
6798         if (!skb)
6799                 return NULL;
6800
6801         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6802         if (!hdr) {
6803                 kfree_skb(skb);
6804                 return NULL;
6805         }
6806
6807         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6808                 goto nla_put_failure;
6809         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6810
6811         ((void **)skb->cb)[0] = rdev;
6812         ((void **)skb->cb)[1] = hdr;
6813         ((void **)skb->cb)[2] = data;
6814
6815         return skb;
6816
6817  nla_put_failure:
6818         kfree_skb(skb);
6819         return NULL;
6820 }
6821
6822 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6823                                                   int approxlen)
6824 {
6825         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6826
6827         if (WARN_ON(!rdev->testmode_info))
6828                 return NULL;
6829
6830         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6831                                 rdev->testmode_info->snd_portid,
6832                                 rdev->testmode_info->snd_seq,
6833                                 GFP_KERNEL);
6834 }
6835 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6836
6837 int cfg80211_testmode_reply(struct sk_buff *skb)
6838 {
6839         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6840         void *hdr = ((void **)skb->cb)[1];
6841         struct nlattr *data = ((void **)skb->cb)[2];
6842
6843         if (WARN_ON(!rdev->testmode_info)) {
6844                 kfree_skb(skb);
6845                 return -EINVAL;
6846         }
6847
6848         nla_nest_end(skb, data);
6849         genlmsg_end(skb, hdr);
6850         return genlmsg_reply(skb, rdev->testmode_info);
6851 }
6852 EXPORT_SYMBOL(cfg80211_testmode_reply);
6853
6854 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6855                                                   int approxlen, gfp_t gfp)
6856 {
6857         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6858
6859         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6860 }
6861 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6862
6863 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6864 {
6865         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6866         void *hdr = ((void **)skb->cb)[1];
6867         struct nlattr *data = ((void **)skb->cb)[2];
6868
6869         nla_nest_end(skb, data);
6870         genlmsg_end(skb, hdr);
6871         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6872                                 nl80211_testmode_mcgrp.id, gfp);
6873 }
6874 EXPORT_SYMBOL(cfg80211_testmode_event);
6875 #endif
6876
6877 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6878 {
6879         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6880         struct net_device *dev = info->user_ptr[1];
6881         struct cfg80211_connect_params connect;
6882         struct wiphy *wiphy;
6883         struct cfg80211_cached_keys *connkeys = NULL;
6884         int err;
6885
6886         memset(&connect, 0, sizeof(connect));
6887
6888         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6889                 return -EINVAL;
6890
6891         if (!info->attrs[NL80211_ATTR_SSID] ||
6892             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6893                 return -EINVAL;
6894
6895         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6896                 connect.auth_type =
6897                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6898                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6899                                              NL80211_CMD_CONNECT))
6900                         return -EINVAL;
6901         } else
6902                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6903
6904         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6905
6906         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6907                                       NL80211_MAX_NR_CIPHER_SUITES);
6908         if (err)
6909                 return err;
6910
6911         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6912             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6913                 return -EOPNOTSUPP;
6914
6915         wiphy = &rdev->wiphy;
6916
6917         connect.bg_scan_period = -1;
6918         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6919                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6920                 connect.bg_scan_period =
6921                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6922         }
6923
6924         if (info->attrs[NL80211_ATTR_MAC])
6925                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6926         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6927         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6928
6929         if (info->attrs[NL80211_ATTR_IE]) {
6930                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6931                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6932         }
6933
6934         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6935                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6936                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6937                     connect.mfp != NL80211_MFP_NO)
6938                         return -EINVAL;
6939         } else {
6940                 connect.mfp = NL80211_MFP_NO;
6941         }
6942
6943         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6944                 connect.channel =
6945                         ieee80211_get_channel(wiphy,
6946                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6947                 if (!connect.channel ||
6948                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6949                         return -EINVAL;
6950         }
6951
6952         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6953                 connkeys = nl80211_parse_connkeys(rdev,
6954                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6955                 if (IS_ERR(connkeys))
6956                         return PTR_ERR(connkeys);
6957         }
6958
6959         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6960                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6961
6962         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6963                 memcpy(&connect.ht_capa_mask,
6964                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6965                        sizeof(connect.ht_capa_mask));
6966
6967         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6968                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6969                         kfree(connkeys);
6970                         return -EINVAL;
6971                 }
6972                 memcpy(&connect.ht_capa,
6973                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6974                        sizeof(connect.ht_capa));
6975         }
6976
6977         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6978                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6979
6980         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6981                 memcpy(&connect.vht_capa_mask,
6982                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6983                        sizeof(connect.vht_capa_mask));
6984
6985         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6986                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6987                         kfree(connkeys);
6988                         return -EINVAL;
6989                 }
6990                 memcpy(&connect.vht_capa,
6991                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6992                        sizeof(connect.vht_capa));
6993         }
6994
6995         wdev_lock(dev->ieee80211_ptr);
6996         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6997         wdev_unlock(dev->ieee80211_ptr);
6998         if (err)
6999                 kfree(connkeys);
7000         return err;
7001 }
7002
7003 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7004 {
7005         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7006         struct net_device *dev = info->user_ptr[1];
7007         u16 reason;
7008         int ret;
7009
7010         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7011                 reason = WLAN_REASON_DEAUTH_LEAVING;
7012         else
7013                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7014
7015         if (reason == 0)
7016                 return -EINVAL;
7017
7018         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7019             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7020                 return -EOPNOTSUPP;
7021
7022         wdev_lock(dev->ieee80211_ptr);
7023         ret = cfg80211_disconnect(rdev, dev, reason, true);
7024         wdev_unlock(dev->ieee80211_ptr);
7025         return ret;
7026 }
7027
7028 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7029 {
7030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7031         struct net *net;
7032         int err;
7033         u32 pid;
7034
7035         if (!info->attrs[NL80211_ATTR_PID])
7036                 return -EINVAL;
7037
7038         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7039
7040         net = get_net_ns_by_pid(pid);
7041         if (IS_ERR(net))
7042                 return PTR_ERR(net);
7043
7044         err = 0;
7045
7046         /* check if anything to do */
7047         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7048                 err = cfg80211_switch_netns(rdev, net);
7049
7050         put_net(net);
7051         return err;
7052 }
7053
7054 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7055 {
7056         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7057         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7058                         struct cfg80211_pmksa *pmksa) = NULL;
7059         struct net_device *dev = info->user_ptr[1];
7060         struct cfg80211_pmksa pmksa;
7061
7062         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7063
7064         if (!info->attrs[NL80211_ATTR_MAC])
7065                 return -EINVAL;
7066
7067         if (!info->attrs[NL80211_ATTR_PMKID])
7068                 return -EINVAL;
7069
7070         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7071         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7072
7073         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7074             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7075                 return -EOPNOTSUPP;
7076
7077         switch (info->genlhdr->cmd) {
7078         case NL80211_CMD_SET_PMKSA:
7079                 rdev_ops = rdev->ops->set_pmksa;
7080                 break;
7081         case NL80211_CMD_DEL_PMKSA:
7082                 rdev_ops = rdev->ops->del_pmksa;
7083                 break;
7084         default:
7085                 WARN_ON(1);
7086                 break;
7087         }
7088
7089         if (!rdev_ops)
7090                 return -EOPNOTSUPP;
7091
7092         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7093 }
7094
7095 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7096 {
7097         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7098         struct net_device *dev = info->user_ptr[1];
7099
7100         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7101             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7102                 return -EOPNOTSUPP;
7103
7104         if (!rdev->ops->flush_pmksa)
7105                 return -EOPNOTSUPP;
7106
7107         return rdev_flush_pmksa(rdev, dev);
7108 }
7109
7110 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7111 {
7112         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7113         struct net_device *dev = info->user_ptr[1];
7114         u8 action_code, dialog_token;
7115         u16 status_code;
7116         u8 *peer;
7117
7118         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7119             !rdev->ops->tdls_mgmt)
7120                 return -EOPNOTSUPP;
7121
7122         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7123             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7124             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7125             !info->attrs[NL80211_ATTR_IE] ||
7126             !info->attrs[NL80211_ATTR_MAC])
7127                 return -EINVAL;
7128
7129         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7130         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7131         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7132         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7133
7134         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7135                               dialog_token, status_code,
7136                               nla_data(info->attrs[NL80211_ATTR_IE]),
7137                               nla_len(info->attrs[NL80211_ATTR_IE]));
7138 }
7139
7140 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7141 {
7142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7143         struct net_device *dev = info->user_ptr[1];
7144         enum nl80211_tdls_operation operation;
7145         u8 *peer;
7146
7147         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7148             !rdev->ops->tdls_oper)
7149                 return -EOPNOTSUPP;
7150
7151         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7152             !info->attrs[NL80211_ATTR_MAC])
7153                 return -EINVAL;
7154
7155         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7156         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7157
7158         return rdev_tdls_oper(rdev, dev, peer, operation);
7159 }
7160
7161 static int nl80211_remain_on_channel(struct sk_buff *skb,
7162                                      struct genl_info *info)
7163 {
7164         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7165         struct wireless_dev *wdev = info->user_ptr[1];
7166         struct cfg80211_chan_def chandef;
7167         struct sk_buff *msg;
7168         void *hdr;
7169         u64 cookie;
7170         u32 duration;
7171         int err;
7172
7173         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7174             !info->attrs[NL80211_ATTR_DURATION])
7175                 return -EINVAL;
7176
7177         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7178
7179         if (!rdev->ops->remain_on_channel ||
7180             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7181                 return -EOPNOTSUPP;
7182
7183         /*
7184          * We should be on that channel for at least a minimum amount of
7185          * time (10ms) but no longer than the driver supports.
7186          */
7187         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7188             duration > rdev->wiphy.max_remain_on_channel_duration)
7189                 return -EINVAL;
7190
7191         err = nl80211_parse_chandef(rdev, info, &chandef);
7192         if (err)
7193                 return err;
7194
7195         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7196         if (!msg)
7197                 return -ENOMEM;
7198
7199         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7200                              NL80211_CMD_REMAIN_ON_CHANNEL);
7201         if (!hdr) {
7202                 err = -ENOBUFS;
7203                 goto free_msg;
7204         }
7205
7206         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7207                                      duration, &cookie);
7208
7209         if (err)
7210                 goto free_msg;
7211
7212         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7213                 goto nla_put_failure;
7214
7215         genlmsg_end(msg, hdr);
7216
7217         return genlmsg_reply(msg, info);
7218
7219  nla_put_failure:
7220         err = -ENOBUFS;
7221  free_msg:
7222         nlmsg_free(msg);
7223         return err;
7224 }
7225
7226 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7227                                             struct genl_info *info)
7228 {
7229         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7230         struct wireless_dev *wdev = info->user_ptr[1];
7231         u64 cookie;
7232
7233         if (!info->attrs[NL80211_ATTR_COOKIE])
7234                 return -EINVAL;
7235
7236         if (!rdev->ops->cancel_remain_on_channel)
7237                 return -EOPNOTSUPP;
7238
7239         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7240
7241         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7242 }
7243
7244 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7245                            u8 *rates, u8 rates_len)
7246 {
7247         u8 i;
7248         u32 mask = 0;
7249
7250         for (i = 0; i < rates_len; i++) {
7251                 int rate = (rates[i] & 0x7f) * 5;
7252                 int ridx;
7253                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7254                         struct ieee80211_rate *srate =
7255                                 &sband->bitrates[ridx];
7256                         if (rate == srate->bitrate) {
7257                                 mask |= 1 << ridx;
7258                                 break;
7259                         }
7260                 }
7261                 if (ridx == sband->n_bitrates)
7262                         return 0; /* rate not found */
7263         }
7264
7265         return mask;
7266 }
7267
7268 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7269                                u8 *rates, u8 rates_len,
7270                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7271 {
7272         u8 i;
7273
7274         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7275
7276         for (i = 0; i < rates_len; i++) {
7277                 int ridx, rbit;
7278
7279                 ridx = rates[i] / 8;
7280                 rbit = BIT(rates[i] % 8);
7281
7282                 /* check validity */
7283                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7284                         return false;
7285
7286                 /* check availability */
7287                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7288                         mcs[ridx] |= rbit;
7289                 else
7290                         return false;
7291         }
7292
7293         return true;
7294 }
7295
7296 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7297         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7298                                     .len = NL80211_MAX_SUPP_RATES },
7299         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7300                                  .len = NL80211_MAX_SUPP_HT_RATES },
7301 };
7302
7303 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7304                                        struct genl_info *info)
7305 {
7306         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7307         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7308         struct cfg80211_bitrate_mask mask;
7309         int rem, i;
7310         struct net_device *dev = info->user_ptr[1];
7311         struct nlattr *tx_rates;
7312         struct ieee80211_supported_band *sband;
7313
7314         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7315                 return -EINVAL;
7316
7317         if (!rdev->ops->set_bitrate_mask)
7318                 return -EOPNOTSUPP;
7319
7320         memset(&mask, 0, sizeof(mask));
7321         /* Default to all rates enabled */
7322         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7323                 sband = rdev->wiphy.bands[i];
7324                 mask.control[i].legacy =
7325                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7326                 if (sband)
7327                         memcpy(mask.control[i].mcs,
7328                                sband->ht_cap.mcs.rx_mask,
7329                                sizeof(mask.control[i].mcs));
7330                 else
7331                         memset(mask.control[i].mcs, 0,
7332                                sizeof(mask.control[i].mcs));
7333         }
7334
7335         /*
7336          * The nested attribute uses enum nl80211_band as the index. This maps
7337          * directly to the enum ieee80211_band values used in cfg80211.
7338          */
7339         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7340         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7341         {
7342                 enum ieee80211_band band = nla_type(tx_rates);
7343                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7344                         return -EINVAL;
7345                 sband = rdev->wiphy.bands[band];
7346                 if (sband == NULL)
7347                         return -EINVAL;
7348                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7349                           nla_len(tx_rates), nl80211_txattr_policy);
7350                 if (tb[NL80211_TXRATE_LEGACY]) {
7351                         mask.control[band].legacy = rateset_to_mask(
7352                                 sband,
7353                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7354                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7355                         if ((mask.control[band].legacy == 0) &&
7356                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7357                                 return -EINVAL;
7358                 }
7359                 if (tb[NL80211_TXRATE_MCS]) {
7360                         if (!ht_rateset_to_mask(
7361                                         sband,
7362                                         nla_data(tb[NL80211_TXRATE_MCS]),
7363                                         nla_len(tb[NL80211_TXRATE_MCS]),
7364                                         mask.control[band].mcs))
7365                                 return -EINVAL;
7366                 }
7367
7368                 if (mask.control[band].legacy == 0) {
7369                         /* don't allow empty legacy rates if HT
7370                          * is not even supported. */
7371                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7372                                 return -EINVAL;
7373
7374                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7375                                 if (mask.control[band].mcs[i])
7376                                         break;
7377
7378                         /* legacy and mcs rates may not be both empty */
7379                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7380                                 return -EINVAL;
7381                 }
7382         }
7383
7384         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7385 }
7386
7387 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7388 {
7389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7390         struct wireless_dev *wdev = info->user_ptr[1];
7391         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7392
7393         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7394                 return -EINVAL;
7395
7396         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7397                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7398
7399         switch (wdev->iftype) {
7400         case NL80211_IFTYPE_STATION:
7401         case NL80211_IFTYPE_ADHOC:
7402         case NL80211_IFTYPE_P2P_CLIENT:
7403         case NL80211_IFTYPE_AP:
7404         case NL80211_IFTYPE_AP_VLAN:
7405         case NL80211_IFTYPE_MESH_POINT:
7406         case NL80211_IFTYPE_P2P_GO:
7407         case NL80211_IFTYPE_P2P_DEVICE:
7408                 break;
7409         default:
7410                 return -EOPNOTSUPP;
7411         }
7412
7413         /* not much point in registering if we can't reply */
7414         if (!rdev->ops->mgmt_tx)
7415                 return -EOPNOTSUPP;
7416
7417         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7418                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7419                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7420 }
7421
7422 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7423 {
7424         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7425         struct wireless_dev *wdev = info->user_ptr[1];
7426         struct cfg80211_chan_def chandef;
7427         int err;
7428         void *hdr = NULL;
7429         u64 cookie;
7430         struct sk_buff *msg = NULL;
7431         unsigned int wait = 0;
7432         bool offchan, no_cck, dont_wait_for_ack;
7433
7434         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7435
7436         if (!info->attrs[NL80211_ATTR_FRAME])
7437                 return -EINVAL;
7438
7439         if (!rdev->ops->mgmt_tx)
7440                 return -EOPNOTSUPP;
7441
7442         switch (wdev->iftype) {
7443         case NL80211_IFTYPE_P2P_DEVICE:
7444                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7445                         return -EINVAL;
7446         case NL80211_IFTYPE_STATION:
7447         case NL80211_IFTYPE_ADHOC:
7448         case NL80211_IFTYPE_P2P_CLIENT:
7449         case NL80211_IFTYPE_AP:
7450         case NL80211_IFTYPE_AP_VLAN:
7451         case NL80211_IFTYPE_MESH_POINT:
7452         case NL80211_IFTYPE_P2P_GO:
7453                 break;
7454         default:
7455                 return -EOPNOTSUPP;
7456         }
7457
7458         if (info->attrs[NL80211_ATTR_DURATION]) {
7459                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7460                         return -EINVAL;
7461                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7462
7463                 /*
7464                  * We should wait on the channel for at least a minimum amount
7465                  * of time (10ms) but no longer than the driver supports.
7466                  */
7467                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7468                     wait > rdev->wiphy.max_remain_on_channel_duration)
7469                         return -EINVAL;
7470
7471         }
7472
7473         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7474
7475         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7476                 return -EINVAL;
7477
7478         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7479
7480         /* get the channel if any has been specified, otherwise pass NULL to
7481          * the driver. The latter will use the current one
7482          */
7483         chandef.chan = NULL;
7484         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7485                 err = nl80211_parse_chandef(rdev, info, &chandef);
7486                 if (err)
7487                         return err;
7488         }
7489
7490         if (!chandef.chan && offchan)
7491                 return -EINVAL;
7492
7493         if (!dont_wait_for_ack) {
7494                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7495                 if (!msg)
7496                         return -ENOMEM;
7497
7498                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7499                                      NL80211_CMD_FRAME);
7500                 if (!hdr) {
7501                         err = -ENOBUFS;
7502                         goto free_msg;
7503                 }
7504         }
7505
7506         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7507                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7508                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7509                                     no_cck, dont_wait_for_ack, &cookie);
7510         if (err)
7511                 goto free_msg;
7512
7513         if (msg) {
7514                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7515                         goto nla_put_failure;
7516
7517                 genlmsg_end(msg, hdr);
7518                 return genlmsg_reply(msg, info);
7519         }
7520
7521         return 0;
7522
7523  nla_put_failure:
7524         err = -ENOBUFS;
7525  free_msg:
7526         nlmsg_free(msg);
7527         return err;
7528 }
7529
7530 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7531 {
7532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7533         struct wireless_dev *wdev = info->user_ptr[1];
7534         u64 cookie;
7535
7536         if (!info->attrs[NL80211_ATTR_COOKIE])
7537                 return -EINVAL;
7538
7539         if (!rdev->ops->mgmt_tx_cancel_wait)
7540                 return -EOPNOTSUPP;
7541
7542         switch (wdev->iftype) {
7543         case NL80211_IFTYPE_STATION:
7544         case NL80211_IFTYPE_ADHOC:
7545         case NL80211_IFTYPE_P2P_CLIENT:
7546         case NL80211_IFTYPE_AP:
7547         case NL80211_IFTYPE_AP_VLAN:
7548         case NL80211_IFTYPE_P2P_GO:
7549         case NL80211_IFTYPE_P2P_DEVICE:
7550                 break;
7551         default:
7552                 return -EOPNOTSUPP;
7553         }
7554
7555         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7556
7557         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7558 }
7559
7560 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7561 {
7562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7563         struct wireless_dev *wdev;
7564         struct net_device *dev = info->user_ptr[1];
7565         u8 ps_state;
7566         bool state;
7567         int err;
7568
7569         if (!info->attrs[NL80211_ATTR_PS_STATE])
7570                 return -EINVAL;
7571
7572         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7573
7574         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7575                 return -EINVAL;
7576
7577         wdev = dev->ieee80211_ptr;
7578
7579         if (!rdev->ops->set_power_mgmt)
7580                 return -EOPNOTSUPP;
7581
7582         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7583
7584         if (state == wdev->ps)
7585                 return 0;
7586
7587         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7588         if (!err)
7589                 wdev->ps = state;
7590         return err;
7591 }
7592
7593 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7594 {
7595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7596         enum nl80211_ps_state ps_state;
7597         struct wireless_dev *wdev;
7598         struct net_device *dev = info->user_ptr[1];
7599         struct sk_buff *msg;
7600         void *hdr;
7601         int err;
7602
7603         wdev = dev->ieee80211_ptr;
7604
7605         if (!rdev->ops->set_power_mgmt)
7606                 return -EOPNOTSUPP;
7607
7608         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7609         if (!msg)
7610                 return -ENOMEM;
7611
7612         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7613                              NL80211_CMD_GET_POWER_SAVE);
7614         if (!hdr) {
7615                 err = -ENOBUFS;
7616                 goto free_msg;
7617         }
7618
7619         if (wdev->ps)
7620                 ps_state = NL80211_PS_ENABLED;
7621         else
7622                 ps_state = NL80211_PS_DISABLED;
7623
7624         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7625                 goto nla_put_failure;
7626
7627         genlmsg_end(msg, hdr);
7628         return genlmsg_reply(msg, info);
7629
7630  nla_put_failure:
7631         err = -ENOBUFS;
7632  free_msg:
7633         nlmsg_free(msg);
7634         return err;
7635 }
7636
7637 static struct nla_policy
7638 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7639         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7640         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7641         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7642         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7643         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7644         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7645 };
7646
7647 static int nl80211_set_cqm_txe(struct genl_info *info,
7648                                u32 rate, u32 pkts, u32 intvl)
7649 {
7650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7651         struct net_device *dev = info->user_ptr[1];
7652         struct wireless_dev *wdev = dev->ieee80211_ptr;
7653
7654         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7655                 return -EINVAL;
7656
7657         if (!rdev->ops->set_cqm_txe_config)
7658                 return -EOPNOTSUPP;
7659
7660         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7661             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7662                 return -EOPNOTSUPP;
7663
7664         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7665 }
7666
7667 static int nl80211_set_cqm_rssi(struct genl_info *info,
7668                                 s32 threshold, u32 hysteresis)
7669 {
7670         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7671         struct net_device *dev = info->user_ptr[1];
7672         struct wireless_dev *wdev = dev->ieee80211_ptr;
7673
7674         if (threshold > 0)
7675                 return -EINVAL;
7676
7677         /* disabling - hysteresis should also be zero then */
7678         if (threshold == 0)
7679                 hysteresis = 0;
7680
7681         if (!rdev->ops->set_cqm_rssi_config)
7682                 return -EOPNOTSUPP;
7683
7684         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7685             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7686                 return -EOPNOTSUPP;
7687
7688         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7689 }
7690
7691 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7692 {
7693         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7694         struct nlattr *cqm;
7695         int err;
7696
7697         cqm = info->attrs[NL80211_ATTR_CQM];
7698         if (!cqm)
7699                 return -EINVAL;
7700
7701         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7702                                nl80211_attr_cqm_policy);
7703         if (err)
7704                 return err;
7705
7706         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7707             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7708                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7709                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7710
7711                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7712         }
7713
7714         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7715             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7716             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7717                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7718                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7719                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7720
7721                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7722         }
7723
7724         return -EINVAL;
7725 }
7726
7727 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7728 {
7729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7730         struct net_device *dev = info->user_ptr[1];
7731         struct mesh_config cfg;
7732         struct mesh_setup setup;
7733         int err;
7734
7735         /* start with default */
7736         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7737         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7738
7739         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7740                 /* and parse parameters if given */
7741                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7742                 if (err)
7743                         return err;
7744         }
7745
7746         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7747             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7748                 return -EINVAL;
7749
7750         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7751         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7752
7753         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7754             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7755                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7756                         return -EINVAL;
7757
7758         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7759                 setup.beacon_interval =
7760                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7761                 if (setup.beacon_interval < 10 ||
7762                     setup.beacon_interval > 10000)
7763                         return -EINVAL;
7764         }
7765
7766         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7767                 setup.dtim_period =
7768                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7769                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7770                         return -EINVAL;
7771         }
7772
7773         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7774                 /* parse additional setup parameters if given */
7775                 err = nl80211_parse_mesh_setup(info, &setup);
7776                 if (err)
7777                         return err;
7778         }
7779
7780         if (setup.user_mpm)
7781                 cfg.auto_open_plinks = false;
7782
7783         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7784                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7785                 if (err)
7786                         return err;
7787         } else {
7788                 /* cfg80211_join_mesh() will sort it out */
7789                 setup.chandef.chan = NULL;
7790         }
7791
7792         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7793                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7794                 int n_rates =
7795                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7796                 struct ieee80211_supported_band *sband;
7797
7798                 if (!setup.chandef.chan)
7799                         return -EINVAL;
7800
7801                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7802
7803                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7804                                              &setup.basic_rates);
7805                 if (err)
7806                         return err;
7807         }
7808
7809         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7810 }
7811
7812 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7813 {
7814         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7815         struct net_device *dev = info->user_ptr[1];
7816
7817         return cfg80211_leave_mesh(rdev, dev);
7818 }
7819
7820 #ifdef CONFIG_PM
7821 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7822                                         struct cfg80211_registered_device *rdev)
7823 {
7824         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7825         struct nlattr *nl_pats, *nl_pat;
7826         int i, pat_len;
7827
7828         if (!wowlan->n_patterns)
7829                 return 0;
7830
7831         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7832         if (!nl_pats)
7833                 return -ENOBUFS;
7834
7835         for (i = 0; i < wowlan->n_patterns; i++) {
7836                 nl_pat = nla_nest_start(msg, i + 1);
7837                 if (!nl_pat)
7838                         return -ENOBUFS;
7839                 pat_len = wowlan->patterns[i].pattern_len;
7840                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7841                             wowlan->patterns[i].mask) ||
7842                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7843                             wowlan->patterns[i].pattern) ||
7844                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7845                                 wowlan->patterns[i].pkt_offset))
7846                         return -ENOBUFS;
7847                 nla_nest_end(msg, nl_pat);
7848         }
7849         nla_nest_end(msg, nl_pats);
7850
7851         return 0;
7852 }
7853
7854 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7855                                    struct cfg80211_wowlan_tcp *tcp)
7856 {
7857         struct nlattr *nl_tcp;
7858
7859         if (!tcp)
7860                 return 0;
7861
7862         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7863         if (!nl_tcp)
7864                 return -ENOBUFS;
7865
7866         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7867             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7868             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7869             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7870             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7871             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7872                     tcp->payload_len, tcp->payload) ||
7873             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7874                         tcp->data_interval) ||
7875             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7876                     tcp->wake_len, tcp->wake_data) ||
7877             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7878                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7879                 return -ENOBUFS;
7880
7881         if (tcp->payload_seq.len &&
7882             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7883                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7884                 return -ENOBUFS;
7885
7886         if (tcp->payload_tok.len &&
7887             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7888                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7889                     &tcp->payload_tok))
7890                 return -ENOBUFS;
7891
7892         nla_nest_end(msg, nl_tcp);
7893
7894         return 0;
7895 }
7896
7897 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7898 {
7899         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7900         struct sk_buff *msg;
7901         void *hdr;
7902         u32 size = NLMSG_DEFAULT_SIZE;
7903
7904         if (!rdev->wiphy.wowlan)
7905                 return -EOPNOTSUPP;
7906
7907         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7908                 /* adjust size to have room for all the data */
7909                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7910                         rdev->wiphy.wowlan_config->tcp->payload_len +
7911                         rdev->wiphy.wowlan_config->tcp->wake_len +
7912                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7913         }
7914
7915         msg = nlmsg_new(size, GFP_KERNEL);
7916         if (!msg)
7917                 return -ENOMEM;
7918
7919         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7920                              NL80211_CMD_GET_WOWLAN);
7921         if (!hdr)
7922                 goto nla_put_failure;
7923
7924         if (rdev->wiphy.wowlan_config) {
7925                 struct nlattr *nl_wowlan;
7926
7927                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7928                 if (!nl_wowlan)
7929                         goto nla_put_failure;
7930
7931                 if ((rdev->wiphy.wowlan_config->any &&
7932                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7933                     (rdev->wiphy.wowlan_config->disconnect &&
7934                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7935                     (rdev->wiphy.wowlan_config->magic_pkt &&
7936                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7937                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7938                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7939                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7940                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7941                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7942                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7943                     (rdev->wiphy.wowlan_config->rfkill_release &&
7944                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7945                         goto nla_put_failure;
7946
7947                 if (nl80211_send_wowlan_patterns(msg, rdev))
7948                         goto nla_put_failure;
7949
7950                 if (nl80211_send_wowlan_tcp(msg,
7951                                             rdev->wiphy.wowlan_config->tcp))
7952                         goto nla_put_failure;
7953
7954                 nla_nest_end(msg, nl_wowlan);
7955         }
7956
7957         genlmsg_end(msg, hdr);
7958         return genlmsg_reply(msg, info);
7959
7960 nla_put_failure:
7961         nlmsg_free(msg);
7962         return -ENOBUFS;
7963 }
7964
7965 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7966                                     struct nlattr *attr,
7967                                     struct cfg80211_wowlan *trig)
7968 {
7969         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7970         struct cfg80211_wowlan_tcp *cfg;
7971         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7972         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7973         u32 size;
7974         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7975         int err, port;
7976
7977         if (!rdev->wiphy.wowlan->tcp)
7978                 return -EINVAL;
7979
7980         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7981                         nla_data(attr), nla_len(attr),
7982                         nl80211_wowlan_tcp_policy);
7983         if (err)
7984                 return err;
7985
7986         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7987             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7988             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7989             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7990             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7991             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7992             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7993             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7994                 return -EINVAL;
7995
7996         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7997         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7998                 return -EINVAL;
7999
8000         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8001                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8002             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8003                 return -EINVAL;
8004
8005         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8006         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8007                 return -EINVAL;
8008
8009         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8010         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8011                 return -EINVAL;
8012
8013         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8014                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8015
8016                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8017                 tokens_size = tokln - sizeof(*tok);
8018
8019                 if (!tok->len || tokens_size % tok->len)
8020                         return -EINVAL;
8021                 if (!rdev->wiphy.wowlan->tcp->tok)
8022                         return -EINVAL;
8023                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8024                         return -EINVAL;
8025                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8026                         return -EINVAL;
8027                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8028                         return -EINVAL;
8029                 if (tok->offset + tok->len > data_size)
8030                         return -EINVAL;
8031         }
8032
8033         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8034                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8035                 if (!rdev->wiphy.wowlan->tcp->seq)
8036                         return -EINVAL;
8037                 if (seq->len == 0 || seq->len > 4)
8038                         return -EINVAL;
8039                 if (seq->len + seq->offset > data_size)
8040                         return -EINVAL;
8041         }
8042
8043         size = sizeof(*cfg);
8044         size += data_size;
8045         size += wake_size + wake_mask_size;
8046         size += tokens_size;
8047
8048         cfg = kzalloc(size, GFP_KERNEL);
8049         if (!cfg)
8050                 return -ENOMEM;
8051         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8052         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8053         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8054                ETH_ALEN);
8055         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8056                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8057         else
8058                 port = 0;
8059 #ifdef CONFIG_INET
8060         /* allocate a socket and port for it and use it */
8061         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8062                             IPPROTO_TCP, &cfg->sock, 1);
8063         if (err) {
8064                 kfree(cfg);
8065                 return err;
8066         }
8067         if (inet_csk_get_port(cfg->sock->sk, port)) {
8068                 sock_release(cfg->sock);
8069                 kfree(cfg);
8070                 return -EADDRINUSE;
8071         }
8072         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8073 #else
8074         if (!port) {
8075                 kfree(cfg);
8076                 return -EINVAL;
8077         }
8078         cfg->src_port = port;
8079 #endif
8080
8081         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8082         cfg->payload_len = data_size;
8083         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8084         memcpy((void *)cfg->payload,
8085                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8086                data_size);
8087         if (seq)
8088                 cfg->payload_seq = *seq;
8089         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8090         cfg->wake_len = wake_size;
8091         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8092         memcpy((void *)cfg->wake_data,
8093                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8094                wake_size);
8095         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8096                          data_size + wake_size;
8097         memcpy((void *)cfg->wake_mask,
8098                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8099                wake_mask_size);
8100         if (tok) {
8101                 cfg->tokens_size = tokens_size;
8102                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8103         }
8104
8105         trig->tcp = cfg;
8106
8107         return 0;
8108 }
8109
8110 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8111 {
8112         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8113         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8114         struct cfg80211_wowlan new_triggers = {};
8115         struct cfg80211_wowlan *ntrig;
8116         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8117         int err, i;
8118         bool prev_enabled = rdev->wiphy.wowlan_config;
8119
8120         if (!wowlan)
8121                 return -EOPNOTSUPP;
8122
8123         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8124                 cfg80211_rdev_free_wowlan(rdev);
8125                 rdev->wiphy.wowlan_config = NULL;
8126                 goto set_wakeup;
8127         }
8128
8129         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8130                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8131                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8132                         nl80211_wowlan_policy);
8133         if (err)
8134                 return err;
8135
8136         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8137                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8138                         return -EINVAL;
8139                 new_triggers.any = true;
8140         }
8141
8142         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8143                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8144                         return -EINVAL;
8145                 new_triggers.disconnect = true;
8146         }
8147
8148         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8149                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8150                         return -EINVAL;
8151                 new_triggers.magic_pkt = true;
8152         }
8153
8154         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8155                 return -EINVAL;
8156
8157         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8158                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8159                         return -EINVAL;
8160                 new_triggers.gtk_rekey_failure = true;
8161         }
8162
8163         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8164                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8165                         return -EINVAL;
8166                 new_triggers.eap_identity_req = true;
8167         }
8168
8169         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8170                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8171                         return -EINVAL;
8172                 new_triggers.four_way_handshake = true;
8173         }
8174
8175         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8176                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8177                         return -EINVAL;
8178                 new_triggers.rfkill_release = true;
8179         }
8180
8181         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8182                 struct nlattr *pat;
8183                 int n_patterns = 0;
8184                 int rem, pat_len, mask_len, pkt_offset;
8185                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8186
8187                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8188                                     rem)
8189                         n_patterns++;
8190                 if (n_patterns > wowlan->n_patterns)
8191                         return -EINVAL;
8192
8193                 new_triggers.patterns = kcalloc(n_patterns,
8194                                                 sizeof(new_triggers.patterns[0]),
8195                                                 GFP_KERNEL);
8196                 if (!new_triggers.patterns)
8197                         return -ENOMEM;
8198
8199                 new_triggers.n_patterns = n_patterns;
8200                 i = 0;
8201
8202                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8203                                     rem) {
8204                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8205                                   nla_len(pat), NULL);
8206                         err = -EINVAL;
8207                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8208                             !pat_tb[NL80211_PKTPAT_PATTERN])
8209                                 goto error;
8210                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8211                         mask_len = DIV_ROUND_UP(pat_len, 8);
8212                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8213                                 goto error;
8214                         if (pat_len > wowlan->pattern_max_len ||
8215                             pat_len < wowlan->pattern_min_len)
8216                                 goto error;
8217
8218                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8219                                 pkt_offset = 0;
8220                         else
8221                                 pkt_offset = nla_get_u32(
8222                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8223                         if (pkt_offset > wowlan->max_pkt_offset)
8224                                 goto error;
8225                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8226
8227                         new_triggers.patterns[i].mask =
8228                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8229                         if (!new_triggers.patterns[i].mask) {
8230                                 err = -ENOMEM;
8231                                 goto error;
8232                         }
8233                         new_triggers.patterns[i].pattern =
8234                                 new_triggers.patterns[i].mask + mask_len;
8235                         memcpy(new_triggers.patterns[i].mask,
8236                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8237                                mask_len);
8238                         new_triggers.patterns[i].pattern_len = pat_len;
8239                         memcpy(new_triggers.patterns[i].pattern,
8240                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8241                                pat_len);
8242                         i++;
8243                 }
8244         }
8245
8246         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8247                 err = nl80211_parse_wowlan_tcp(
8248                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8249                         &new_triggers);
8250                 if (err)
8251                         goto error;
8252         }
8253
8254         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8255         if (!ntrig) {
8256                 err = -ENOMEM;
8257                 goto error;
8258         }
8259         cfg80211_rdev_free_wowlan(rdev);
8260         rdev->wiphy.wowlan_config = ntrig;
8261
8262  set_wakeup:
8263         if (rdev->ops->set_wakeup &&
8264             prev_enabled != !!rdev->wiphy.wowlan_config)
8265                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8266
8267         return 0;
8268  error:
8269         for (i = 0; i < new_triggers.n_patterns; i++)
8270                 kfree(new_triggers.patterns[i].mask);
8271         kfree(new_triggers.patterns);
8272         if (new_triggers.tcp && new_triggers.tcp->sock)
8273                 sock_release(new_triggers.tcp->sock);
8274         kfree(new_triggers.tcp);
8275         return err;
8276 }
8277 #endif
8278
8279 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8280                                        struct cfg80211_registered_device *rdev)
8281 {
8282         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8283         int i, j, pat_len;
8284         struct cfg80211_coalesce_rules *rule;
8285
8286         if (!rdev->coalesce->n_rules)
8287                 return 0;
8288
8289         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8290         if (!nl_rules)
8291                 return -ENOBUFS;
8292
8293         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8294                 nl_rule = nla_nest_start(msg, i + 1);
8295                 if (!nl_rule)
8296                         return -ENOBUFS;
8297
8298                 rule = &rdev->coalesce->rules[i];
8299                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8300                                 rule->delay))
8301                         return -ENOBUFS;
8302
8303                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8304                                 rule->condition))
8305                         return -ENOBUFS;
8306
8307                 nl_pats = nla_nest_start(msg,
8308                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8309                 if (!nl_pats)
8310                         return -ENOBUFS;
8311
8312                 for (j = 0; j < rule->n_patterns; j++) {
8313                         nl_pat = nla_nest_start(msg, j + 1);
8314                         if (!nl_pat)
8315                                 return -ENOBUFS;
8316                         pat_len = rule->patterns[j].pattern_len;
8317                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8318                                     DIV_ROUND_UP(pat_len, 8),
8319                                     rule->patterns[j].mask) ||
8320                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8321                                     rule->patterns[j].pattern) ||
8322                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8323                                         rule->patterns[j].pkt_offset))
8324                                 return -ENOBUFS;
8325                         nla_nest_end(msg, nl_pat);
8326                 }
8327                 nla_nest_end(msg, nl_pats);
8328                 nla_nest_end(msg, nl_rule);
8329         }
8330         nla_nest_end(msg, nl_rules);
8331
8332         return 0;
8333 }
8334
8335 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8336 {
8337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8338         struct sk_buff *msg;
8339         void *hdr;
8340
8341         if (!rdev->wiphy.coalesce)
8342                 return -EOPNOTSUPP;
8343
8344         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8345         if (!msg)
8346                 return -ENOMEM;
8347
8348         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8349                              NL80211_CMD_GET_COALESCE);
8350         if (!hdr)
8351                 goto nla_put_failure;
8352
8353         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8354                 goto nla_put_failure;
8355
8356         genlmsg_end(msg, hdr);
8357         return genlmsg_reply(msg, info);
8358
8359 nla_put_failure:
8360         nlmsg_free(msg);
8361         return -ENOBUFS;
8362 }
8363
8364 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8365 {
8366         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8367         int i, j;
8368         struct cfg80211_coalesce_rules *rule;
8369
8370         if (!coalesce)
8371                 return;
8372
8373         for (i = 0; i < coalesce->n_rules; i++) {
8374                 rule = &coalesce->rules[i];
8375                 for (j = 0; j < rule->n_patterns; j++)
8376                         kfree(rule->patterns[j].mask);
8377                 kfree(rule->patterns);
8378         }
8379         kfree(coalesce->rules);
8380         kfree(coalesce);
8381         rdev->coalesce = NULL;
8382 }
8383
8384 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8385                                        struct nlattr *rule,
8386                                        struct cfg80211_coalesce_rules *new_rule)
8387 {
8388         int err, i;
8389         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8390         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8391         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8392         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8393
8394         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8395                         nla_len(rule), nl80211_coalesce_policy);
8396         if (err)
8397                 return err;
8398
8399         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8400                 new_rule->delay =
8401                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8402         if (new_rule->delay > coalesce->max_delay)
8403                 return -EINVAL;
8404
8405         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8406                 new_rule->condition =
8407                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8408         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8409             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8410                 return -EINVAL;
8411
8412         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8413                 return -EINVAL;
8414
8415         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8416                             rem)
8417                 n_patterns++;
8418         if (n_patterns > coalesce->n_patterns)
8419                 return -EINVAL;
8420
8421         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8422                                      GFP_KERNEL);
8423         if (!new_rule->patterns)
8424                 return -ENOMEM;
8425
8426         new_rule->n_patterns = n_patterns;
8427         i = 0;
8428
8429         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8430                             rem) {
8431                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8432                           nla_len(pat), NULL);
8433                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8434                     !pat_tb[NL80211_PKTPAT_PATTERN])
8435                         return -EINVAL;
8436                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8437                 mask_len = DIV_ROUND_UP(pat_len, 8);
8438                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8439                         return -EINVAL;
8440                 if (pat_len > coalesce->pattern_max_len ||
8441                     pat_len < coalesce->pattern_min_len)
8442                         return -EINVAL;
8443
8444                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8445                         pkt_offset = 0;
8446                 else
8447                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8448                 if (pkt_offset > coalesce->max_pkt_offset)
8449                         return -EINVAL;
8450                 new_rule->patterns[i].pkt_offset = pkt_offset;
8451
8452                 new_rule->patterns[i].mask =
8453                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8454                 if (!new_rule->patterns[i].mask)
8455                         return -ENOMEM;
8456                 new_rule->patterns[i].pattern =
8457                         new_rule->patterns[i].mask + mask_len;
8458                 memcpy(new_rule->patterns[i].mask,
8459                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8460                 new_rule->patterns[i].pattern_len = pat_len;
8461                 memcpy(new_rule->patterns[i].pattern,
8462                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8463                 i++;
8464         }
8465
8466         return 0;
8467 }
8468
8469 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8470 {
8471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8472         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8473         struct cfg80211_coalesce new_coalesce = {};
8474         struct cfg80211_coalesce *n_coalesce;
8475         int err, rem_rule, n_rules = 0, i, j;
8476         struct nlattr *rule;
8477         struct cfg80211_coalesce_rules *tmp_rule;
8478
8479         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8480                 return -EOPNOTSUPP;
8481
8482         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8483                 cfg80211_rdev_free_coalesce(rdev);
8484                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8485                 return 0;
8486         }
8487
8488         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8489                             rem_rule)
8490                 n_rules++;
8491         if (n_rules > coalesce->n_rules)
8492                 return -EINVAL;
8493
8494         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8495                                      GFP_KERNEL);
8496         if (!new_coalesce.rules)
8497                 return -ENOMEM;
8498
8499         new_coalesce.n_rules = n_rules;
8500         i = 0;
8501
8502         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8503                             rem_rule) {
8504                 err = nl80211_parse_coalesce_rule(rdev, rule,
8505                                                   &new_coalesce.rules[i]);
8506                 if (err)
8507                         goto error;
8508
8509                 i++;
8510         }
8511
8512         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8513         if (err)
8514                 goto error;
8515
8516         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8517         if (!n_coalesce) {
8518                 err = -ENOMEM;
8519                 goto error;
8520         }
8521         cfg80211_rdev_free_coalesce(rdev);
8522         rdev->coalesce = n_coalesce;
8523
8524         return 0;
8525 error:
8526         for (i = 0; i < new_coalesce.n_rules; i++) {
8527                 tmp_rule = &new_coalesce.rules[i];
8528                 for (j = 0; j < tmp_rule->n_patterns; j++)
8529                         kfree(tmp_rule->patterns[j].mask);
8530                 kfree(tmp_rule->patterns);
8531         }
8532         kfree(new_coalesce.rules);
8533
8534         return err;
8535 }
8536
8537 static int nl80211_set_rekey_data(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 wireless_dev *wdev = dev->ieee80211_ptr;
8542         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8543         struct cfg80211_gtk_rekey_data rekey_data;
8544         int err;
8545
8546         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8547                 return -EINVAL;
8548
8549         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8550                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8551                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8552                         nl80211_rekey_policy);
8553         if (err)
8554                 return err;
8555
8556         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8557                 return -ERANGE;
8558         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8559                 return -ERANGE;
8560         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8561                 return -ERANGE;
8562
8563         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8564                NL80211_KEK_LEN);
8565         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8566                NL80211_KCK_LEN);
8567         memcpy(rekey_data.replay_ctr,
8568                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8569                NL80211_REPLAY_CTR_LEN);
8570
8571         wdev_lock(wdev);
8572         if (!wdev->current_bss) {
8573                 err = -ENOTCONN;
8574                 goto out;
8575         }
8576
8577         if (!rdev->ops->set_rekey_data) {
8578                 err = -EOPNOTSUPP;
8579                 goto out;
8580         }
8581
8582         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8583  out:
8584         wdev_unlock(wdev);
8585         return err;
8586 }
8587
8588 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8589                                              struct genl_info *info)
8590 {
8591         struct net_device *dev = info->user_ptr[1];
8592         struct wireless_dev *wdev = dev->ieee80211_ptr;
8593
8594         if (wdev->iftype != NL80211_IFTYPE_AP &&
8595             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8596                 return -EINVAL;
8597
8598         if (wdev->ap_unexpected_nlportid)
8599                 return -EBUSY;
8600
8601         wdev->ap_unexpected_nlportid = info->snd_portid;
8602         return 0;
8603 }
8604
8605 static int nl80211_probe_client(struct sk_buff *skb,
8606                                 struct genl_info *info)
8607 {
8608         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8609         struct net_device *dev = info->user_ptr[1];
8610         struct wireless_dev *wdev = dev->ieee80211_ptr;
8611         struct sk_buff *msg;
8612         void *hdr;
8613         const u8 *addr;
8614         u64 cookie;
8615         int err;
8616
8617         if (wdev->iftype != NL80211_IFTYPE_AP &&
8618             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8619                 return -EOPNOTSUPP;
8620
8621         if (!info->attrs[NL80211_ATTR_MAC])
8622                 return -EINVAL;
8623
8624         if (!rdev->ops->probe_client)
8625                 return -EOPNOTSUPP;
8626
8627         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8628         if (!msg)
8629                 return -ENOMEM;
8630
8631         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8632                              NL80211_CMD_PROBE_CLIENT);
8633         if (!hdr) {
8634                 err = -ENOBUFS;
8635                 goto free_msg;
8636         }
8637
8638         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8639
8640         err = rdev_probe_client(rdev, dev, addr, &cookie);
8641         if (err)
8642                 goto free_msg;
8643
8644         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8645                 goto nla_put_failure;
8646
8647         genlmsg_end(msg, hdr);
8648
8649         return genlmsg_reply(msg, info);
8650
8651  nla_put_failure:
8652         err = -ENOBUFS;
8653  free_msg:
8654         nlmsg_free(msg);
8655         return err;
8656 }
8657
8658 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8659 {
8660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8661         struct cfg80211_beacon_registration *reg, *nreg;
8662         int rv;
8663
8664         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8665                 return -EOPNOTSUPP;
8666
8667         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8668         if (!nreg)
8669                 return -ENOMEM;
8670
8671         /* First, check if already registered. */
8672         spin_lock_bh(&rdev->beacon_registrations_lock);
8673         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8674                 if (reg->nlportid == info->snd_portid) {
8675                         rv = -EALREADY;
8676                         goto out_err;
8677                 }
8678         }
8679         /* Add it to the list */
8680         nreg->nlportid = info->snd_portid;
8681         list_add(&nreg->list, &rdev->beacon_registrations);
8682
8683         spin_unlock_bh(&rdev->beacon_registrations_lock);
8684
8685         return 0;
8686 out_err:
8687         spin_unlock_bh(&rdev->beacon_registrations_lock);
8688         kfree(nreg);
8689         return rv;
8690 }
8691
8692 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8693 {
8694         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8695         struct wireless_dev *wdev = info->user_ptr[1];
8696         int err;
8697
8698         if (!rdev->ops->start_p2p_device)
8699                 return -EOPNOTSUPP;
8700
8701         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8702                 return -EOPNOTSUPP;
8703
8704         if (wdev->p2p_started)
8705                 return 0;
8706
8707         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8708         if (err)
8709                 return err;
8710
8711         err = rdev_start_p2p_device(rdev, wdev);
8712         if (err)
8713                 return err;
8714
8715         wdev->p2p_started = true;
8716         rdev->opencount++;
8717
8718         return 0;
8719 }
8720
8721 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8722 {
8723         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8724         struct wireless_dev *wdev = info->user_ptr[1];
8725
8726         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8727                 return -EOPNOTSUPP;
8728
8729         if (!rdev->ops->stop_p2p_device)
8730                 return -EOPNOTSUPP;
8731
8732         cfg80211_stop_p2p_device(rdev, wdev);
8733
8734         return 0;
8735 }
8736
8737 static int nl80211_get_protocol_features(struct sk_buff *skb,
8738                                          struct genl_info *info)
8739 {
8740         void *hdr;
8741         struct sk_buff *msg;
8742
8743         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8744         if (!msg)
8745                 return -ENOMEM;
8746
8747         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8748                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8749         if (!hdr)
8750                 goto nla_put_failure;
8751
8752         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8753                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8754                 goto nla_put_failure;
8755
8756         genlmsg_end(msg, hdr);
8757         return genlmsg_reply(msg, info);
8758
8759  nla_put_failure:
8760         kfree_skb(msg);
8761         return -ENOBUFS;
8762 }
8763
8764 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8765 {
8766         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8767         struct cfg80211_update_ft_ies_params ft_params;
8768         struct net_device *dev = info->user_ptr[1];
8769
8770         if (!rdev->ops->update_ft_ies)
8771                 return -EOPNOTSUPP;
8772
8773         if (!info->attrs[NL80211_ATTR_MDID] ||
8774             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8775                 return -EINVAL;
8776
8777         memset(&ft_params, 0, sizeof(ft_params));
8778         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8779         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8780         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8781
8782         return rdev_update_ft_ies(rdev, dev, &ft_params);
8783 }
8784
8785 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8786                                        struct genl_info *info)
8787 {
8788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8789         struct wireless_dev *wdev = info->user_ptr[1];
8790         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8791         u16 duration;
8792         int ret;
8793
8794         if (!rdev->ops->crit_proto_start)
8795                 return -EOPNOTSUPP;
8796
8797         if (WARN_ON(!rdev->ops->crit_proto_stop))
8798                 return -EINVAL;
8799
8800         if (rdev->crit_proto_nlportid)
8801                 return -EBUSY;
8802
8803         /* determine protocol if provided */
8804         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8805                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8806
8807         if (proto >= NUM_NL80211_CRIT_PROTO)
8808                 return -EINVAL;
8809
8810         /* timeout must be provided */
8811         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8812                 return -EINVAL;
8813
8814         duration =
8815                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8816
8817         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8818                 return -ERANGE;
8819
8820         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8821         if (!ret)
8822                 rdev->crit_proto_nlportid = info->snd_portid;
8823
8824         return ret;
8825 }
8826
8827 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8828                                       struct genl_info *info)
8829 {
8830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8831         struct wireless_dev *wdev = info->user_ptr[1];
8832
8833         if (!rdev->ops->crit_proto_stop)
8834                 return -EOPNOTSUPP;
8835
8836         if (rdev->crit_proto_nlportid) {
8837                 rdev->crit_proto_nlportid = 0;
8838                 rdev_crit_proto_stop(rdev, wdev);
8839         }
8840         return 0;
8841 }
8842
8843 #define NL80211_FLAG_NEED_WIPHY         0x01
8844 #define NL80211_FLAG_NEED_NETDEV        0x02
8845 #define NL80211_FLAG_NEED_RTNL          0x04
8846 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8847 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8848                                          NL80211_FLAG_CHECK_NETDEV_UP)
8849 #define NL80211_FLAG_NEED_WDEV          0x10
8850 /* If a netdev is associated, it must be UP, P2P must be started */
8851 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8852                                          NL80211_FLAG_CHECK_NETDEV_UP)
8853
8854 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8855                             struct genl_info *info)
8856 {
8857         struct cfg80211_registered_device *rdev;
8858         struct wireless_dev *wdev;
8859         struct net_device *dev;
8860         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8861
8862         if (rtnl)
8863                 rtnl_lock();
8864
8865         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8866                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8867                 if (IS_ERR(rdev)) {
8868                         if (rtnl)
8869                                 rtnl_unlock();
8870                         return PTR_ERR(rdev);
8871                 }
8872                 info->user_ptr[0] = rdev;
8873         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8874                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8875                 ASSERT_RTNL();
8876
8877                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8878                                                   info->attrs);
8879                 if (IS_ERR(wdev)) {
8880                         if (rtnl)
8881                                 rtnl_unlock();
8882                         return PTR_ERR(wdev);
8883                 }
8884
8885                 dev = wdev->netdev;
8886                 rdev = wiphy_to_dev(wdev->wiphy);
8887
8888                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8889                         if (!dev) {
8890                                 if (rtnl)
8891                                         rtnl_unlock();
8892                                 return -EINVAL;
8893                         }
8894
8895                         info->user_ptr[1] = dev;
8896                 } else {
8897                         info->user_ptr[1] = wdev;
8898                 }
8899
8900                 if (dev) {
8901                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8902                             !netif_running(dev)) {
8903                                 if (rtnl)
8904                                         rtnl_unlock();
8905                                 return -ENETDOWN;
8906                         }
8907
8908                         dev_hold(dev);
8909                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8910                         if (!wdev->p2p_started) {
8911                                 if (rtnl)
8912                                         rtnl_unlock();
8913                                 return -ENETDOWN;
8914                         }
8915                 }
8916
8917                 info->user_ptr[0] = rdev;
8918         }
8919
8920         return 0;
8921 }
8922
8923 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8924                               struct genl_info *info)
8925 {
8926         if (info->user_ptr[1]) {
8927                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8928                         struct wireless_dev *wdev = info->user_ptr[1];
8929
8930                         if (wdev->netdev)
8931                                 dev_put(wdev->netdev);
8932                 } else {
8933                         dev_put(info->user_ptr[1]);
8934                 }
8935         }
8936         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8937                 rtnl_unlock();
8938 }
8939
8940 static struct genl_ops nl80211_ops[] = {
8941         {
8942                 .cmd = NL80211_CMD_GET_WIPHY,
8943                 .doit = nl80211_get_wiphy,
8944                 .dumpit = nl80211_dump_wiphy,
8945                 .done = nl80211_dump_wiphy_done,
8946                 .policy = nl80211_policy,
8947                 /* can be retrieved by unprivileged users */
8948                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8949                                   NL80211_FLAG_NEED_RTNL,
8950         },
8951         {
8952                 .cmd = NL80211_CMD_SET_WIPHY,
8953                 .doit = nl80211_set_wiphy,
8954                 .policy = nl80211_policy,
8955                 .flags = GENL_ADMIN_PERM,
8956                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8957         },
8958         {
8959                 .cmd = NL80211_CMD_GET_INTERFACE,
8960                 .doit = nl80211_get_interface,
8961                 .dumpit = nl80211_dump_interface,
8962                 .policy = nl80211_policy,
8963                 /* can be retrieved by unprivileged users */
8964                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8965                                   NL80211_FLAG_NEED_RTNL,
8966         },
8967         {
8968                 .cmd = NL80211_CMD_SET_INTERFACE,
8969                 .doit = nl80211_set_interface,
8970                 .policy = nl80211_policy,
8971                 .flags = GENL_ADMIN_PERM,
8972                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8973                                   NL80211_FLAG_NEED_RTNL,
8974         },
8975         {
8976                 .cmd = NL80211_CMD_NEW_INTERFACE,
8977                 .doit = nl80211_new_interface,
8978                 .policy = nl80211_policy,
8979                 .flags = GENL_ADMIN_PERM,
8980                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8981                                   NL80211_FLAG_NEED_RTNL,
8982         },
8983         {
8984                 .cmd = NL80211_CMD_DEL_INTERFACE,
8985                 .doit = nl80211_del_interface,
8986                 .policy = nl80211_policy,
8987                 .flags = GENL_ADMIN_PERM,
8988                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8989                                   NL80211_FLAG_NEED_RTNL,
8990         },
8991         {
8992                 .cmd = NL80211_CMD_GET_KEY,
8993                 .doit = nl80211_get_key,
8994                 .policy = nl80211_policy,
8995                 .flags = GENL_ADMIN_PERM,
8996                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8997                                   NL80211_FLAG_NEED_RTNL,
8998         },
8999         {
9000                 .cmd = NL80211_CMD_SET_KEY,
9001                 .doit = nl80211_set_key,
9002                 .policy = nl80211_policy,
9003                 .flags = GENL_ADMIN_PERM,
9004                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9005                                   NL80211_FLAG_NEED_RTNL,
9006         },
9007         {
9008                 .cmd = NL80211_CMD_NEW_KEY,
9009                 .doit = nl80211_new_key,
9010                 .policy = nl80211_policy,
9011                 .flags = GENL_ADMIN_PERM,
9012                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9013                                   NL80211_FLAG_NEED_RTNL,
9014         },
9015         {
9016                 .cmd = NL80211_CMD_DEL_KEY,
9017                 .doit = nl80211_del_key,
9018                 .policy = nl80211_policy,
9019                 .flags = GENL_ADMIN_PERM,
9020                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9021                                   NL80211_FLAG_NEED_RTNL,
9022         },
9023         {
9024                 .cmd = NL80211_CMD_SET_BEACON,
9025                 .policy = nl80211_policy,
9026                 .flags = GENL_ADMIN_PERM,
9027                 .doit = nl80211_set_beacon,
9028                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9029                                   NL80211_FLAG_NEED_RTNL,
9030         },
9031         {
9032                 .cmd = NL80211_CMD_START_AP,
9033                 .policy = nl80211_policy,
9034                 .flags = GENL_ADMIN_PERM,
9035                 .doit = nl80211_start_ap,
9036                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9037                                   NL80211_FLAG_NEED_RTNL,
9038         },
9039         {
9040                 .cmd = NL80211_CMD_STOP_AP,
9041                 .policy = nl80211_policy,
9042                 .flags = GENL_ADMIN_PERM,
9043                 .doit = nl80211_stop_ap,
9044                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9045                                   NL80211_FLAG_NEED_RTNL,
9046         },
9047         {
9048                 .cmd = NL80211_CMD_GET_STATION,
9049                 .doit = nl80211_get_station,
9050                 .dumpit = nl80211_dump_station,
9051                 .policy = nl80211_policy,
9052                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9053                                   NL80211_FLAG_NEED_RTNL,
9054         },
9055         {
9056                 .cmd = NL80211_CMD_SET_STATION,
9057                 .doit = nl80211_set_station,
9058                 .policy = nl80211_policy,
9059                 .flags = GENL_ADMIN_PERM,
9060                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9061                                   NL80211_FLAG_NEED_RTNL,
9062         },
9063         {
9064                 .cmd = NL80211_CMD_NEW_STATION,
9065                 .doit = nl80211_new_station,
9066                 .policy = nl80211_policy,
9067                 .flags = GENL_ADMIN_PERM,
9068                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9069                                   NL80211_FLAG_NEED_RTNL,
9070         },
9071         {
9072                 .cmd = NL80211_CMD_DEL_STATION,
9073                 .doit = nl80211_del_station,
9074                 .policy = nl80211_policy,
9075                 .flags = GENL_ADMIN_PERM,
9076                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9077                                   NL80211_FLAG_NEED_RTNL,
9078         },
9079         {
9080                 .cmd = NL80211_CMD_GET_MPATH,
9081                 .doit = nl80211_get_mpath,
9082                 .dumpit = nl80211_dump_mpath,
9083                 .policy = nl80211_policy,
9084                 .flags = GENL_ADMIN_PERM,
9085                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9086                                   NL80211_FLAG_NEED_RTNL,
9087         },
9088         {
9089                 .cmd = NL80211_CMD_SET_MPATH,
9090                 .doit = nl80211_set_mpath,
9091                 .policy = nl80211_policy,
9092                 .flags = GENL_ADMIN_PERM,
9093                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9094                                   NL80211_FLAG_NEED_RTNL,
9095         },
9096         {
9097                 .cmd = NL80211_CMD_NEW_MPATH,
9098                 .doit = nl80211_new_mpath,
9099                 .policy = nl80211_policy,
9100                 .flags = GENL_ADMIN_PERM,
9101                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9102                                   NL80211_FLAG_NEED_RTNL,
9103         },
9104         {
9105                 .cmd = NL80211_CMD_DEL_MPATH,
9106                 .doit = nl80211_del_mpath,
9107                 .policy = nl80211_policy,
9108                 .flags = GENL_ADMIN_PERM,
9109                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9110                                   NL80211_FLAG_NEED_RTNL,
9111         },
9112         {
9113                 .cmd = NL80211_CMD_SET_BSS,
9114                 .doit = nl80211_set_bss,
9115                 .policy = nl80211_policy,
9116                 .flags = GENL_ADMIN_PERM,
9117                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9118                                   NL80211_FLAG_NEED_RTNL,
9119         },
9120         {
9121                 .cmd = NL80211_CMD_GET_REG,
9122                 .doit = nl80211_get_reg,
9123                 .policy = nl80211_policy,
9124                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9125                 /* can be retrieved by unprivileged users */
9126         },
9127         {
9128                 .cmd = NL80211_CMD_SET_REG,
9129                 .doit = nl80211_set_reg,
9130                 .policy = nl80211_policy,
9131                 .flags = GENL_ADMIN_PERM,
9132                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9133         },
9134         {
9135                 .cmd = NL80211_CMD_REQ_SET_REG,
9136                 .doit = nl80211_req_set_reg,
9137                 .policy = nl80211_policy,
9138                 .flags = GENL_ADMIN_PERM,
9139         },
9140         {
9141                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9142                 .doit = nl80211_get_mesh_config,
9143                 .policy = nl80211_policy,
9144                 /* can be retrieved by unprivileged users */
9145                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9146                                   NL80211_FLAG_NEED_RTNL,
9147         },
9148         {
9149                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9150                 .doit = nl80211_update_mesh_config,
9151                 .policy = nl80211_policy,
9152                 .flags = GENL_ADMIN_PERM,
9153                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9154                                   NL80211_FLAG_NEED_RTNL,
9155         },
9156         {
9157                 .cmd = NL80211_CMD_TRIGGER_SCAN,
9158                 .doit = nl80211_trigger_scan,
9159                 .policy = nl80211_policy,
9160                 .flags = GENL_ADMIN_PERM,
9161                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9162                                   NL80211_FLAG_NEED_RTNL,
9163         },
9164         {
9165                 .cmd = NL80211_CMD_GET_SCAN,
9166                 .policy = nl80211_policy,
9167                 .dumpit = nl80211_dump_scan,
9168         },
9169         {
9170                 .cmd = NL80211_CMD_START_SCHED_SCAN,
9171                 .doit = nl80211_start_sched_scan,
9172                 .policy = nl80211_policy,
9173                 .flags = GENL_ADMIN_PERM,
9174                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9175                                   NL80211_FLAG_NEED_RTNL,
9176         },
9177         {
9178                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9179                 .doit = nl80211_stop_sched_scan,
9180                 .policy = nl80211_policy,
9181                 .flags = GENL_ADMIN_PERM,
9182                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9183                                   NL80211_FLAG_NEED_RTNL,
9184         },
9185         {
9186                 .cmd = NL80211_CMD_AUTHENTICATE,
9187                 .doit = nl80211_authenticate,
9188                 .policy = nl80211_policy,
9189                 .flags = GENL_ADMIN_PERM,
9190                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9191                                   NL80211_FLAG_NEED_RTNL,
9192         },
9193         {
9194                 .cmd = NL80211_CMD_ASSOCIATE,
9195                 .doit = nl80211_associate,
9196                 .policy = nl80211_policy,
9197                 .flags = GENL_ADMIN_PERM,
9198                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9199                                   NL80211_FLAG_NEED_RTNL,
9200         },
9201         {
9202                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9203                 .doit = nl80211_deauthenticate,
9204                 .policy = nl80211_policy,
9205                 .flags = GENL_ADMIN_PERM,
9206                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9207                                   NL80211_FLAG_NEED_RTNL,
9208         },
9209         {
9210                 .cmd = NL80211_CMD_DISASSOCIATE,
9211                 .doit = nl80211_disassociate,
9212                 .policy = nl80211_policy,
9213                 .flags = GENL_ADMIN_PERM,
9214                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9215                                   NL80211_FLAG_NEED_RTNL,
9216         },
9217         {
9218                 .cmd = NL80211_CMD_JOIN_IBSS,
9219                 .doit = nl80211_join_ibss,
9220                 .policy = nl80211_policy,
9221                 .flags = GENL_ADMIN_PERM,
9222                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9223                                   NL80211_FLAG_NEED_RTNL,
9224         },
9225         {
9226                 .cmd = NL80211_CMD_LEAVE_IBSS,
9227                 .doit = nl80211_leave_ibss,
9228                 .policy = nl80211_policy,
9229                 .flags = GENL_ADMIN_PERM,
9230                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9231                                   NL80211_FLAG_NEED_RTNL,
9232         },
9233 #ifdef CONFIG_NL80211_TESTMODE
9234         {
9235                 .cmd = NL80211_CMD_TESTMODE,
9236                 .doit = nl80211_testmode_do,
9237                 .dumpit = nl80211_testmode_dump,
9238                 .policy = nl80211_policy,
9239                 .flags = GENL_ADMIN_PERM,
9240                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9241                                   NL80211_FLAG_NEED_RTNL,
9242         },
9243 #endif
9244         {
9245                 .cmd = NL80211_CMD_CONNECT,
9246                 .doit = nl80211_connect,
9247                 .policy = nl80211_policy,
9248                 .flags = GENL_ADMIN_PERM,
9249                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9250                                   NL80211_FLAG_NEED_RTNL,
9251         },
9252         {
9253                 .cmd = NL80211_CMD_DISCONNECT,
9254                 .doit = nl80211_disconnect,
9255                 .policy = nl80211_policy,
9256                 .flags = GENL_ADMIN_PERM,
9257                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9258                                   NL80211_FLAG_NEED_RTNL,
9259         },
9260         {
9261                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9262                 .doit = nl80211_wiphy_netns,
9263                 .policy = nl80211_policy,
9264                 .flags = GENL_ADMIN_PERM,
9265                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9266                                   NL80211_FLAG_NEED_RTNL,
9267         },
9268         {
9269                 .cmd = NL80211_CMD_GET_SURVEY,
9270                 .policy = nl80211_policy,
9271                 .dumpit = nl80211_dump_survey,
9272         },
9273         {
9274                 .cmd = NL80211_CMD_SET_PMKSA,
9275                 .doit = nl80211_setdel_pmksa,
9276                 .policy = nl80211_policy,
9277                 .flags = GENL_ADMIN_PERM,
9278                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9279                                   NL80211_FLAG_NEED_RTNL,
9280         },
9281         {
9282                 .cmd = NL80211_CMD_DEL_PMKSA,
9283                 .doit = nl80211_setdel_pmksa,
9284                 .policy = nl80211_policy,
9285                 .flags = GENL_ADMIN_PERM,
9286                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9287                                   NL80211_FLAG_NEED_RTNL,
9288         },
9289         {
9290                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9291                 .doit = nl80211_flush_pmksa,
9292                 .policy = nl80211_policy,
9293                 .flags = GENL_ADMIN_PERM,
9294                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9295                                   NL80211_FLAG_NEED_RTNL,
9296         },
9297         {
9298                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9299                 .doit = nl80211_remain_on_channel,
9300                 .policy = nl80211_policy,
9301                 .flags = GENL_ADMIN_PERM,
9302                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9303                                   NL80211_FLAG_NEED_RTNL,
9304         },
9305         {
9306                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9307                 .doit = nl80211_cancel_remain_on_channel,
9308                 .policy = nl80211_policy,
9309                 .flags = GENL_ADMIN_PERM,
9310                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9311                                   NL80211_FLAG_NEED_RTNL,
9312         },
9313         {
9314                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9315                 .doit = nl80211_set_tx_bitrate_mask,
9316                 .policy = nl80211_policy,
9317                 .flags = GENL_ADMIN_PERM,
9318                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9319                                   NL80211_FLAG_NEED_RTNL,
9320         },
9321         {
9322                 .cmd = NL80211_CMD_REGISTER_FRAME,
9323                 .doit = nl80211_register_mgmt,
9324                 .policy = nl80211_policy,
9325                 .flags = GENL_ADMIN_PERM,
9326                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9327                                   NL80211_FLAG_NEED_RTNL,
9328         },
9329         {
9330                 .cmd = NL80211_CMD_FRAME,
9331                 .doit = nl80211_tx_mgmt,
9332                 .policy = nl80211_policy,
9333                 .flags = GENL_ADMIN_PERM,
9334                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9335                                   NL80211_FLAG_NEED_RTNL,
9336         },
9337         {
9338                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9339                 .doit = nl80211_tx_mgmt_cancel_wait,
9340                 .policy = nl80211_policy,
9341                 .flags = GENL_ADMIN_PERM,
9342                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9343                                   NL80211_FLAG_NEED_RTNL,
9344         },
9345         {
9346                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9347                 .doit = nl80211_set_power_save,
9348                 .policy = nl80211_policy,
9349                 .flags = GENL_ADMIN_PERM,
9350                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9351                                   NL80211_FLAG_NEED_RTNL,
9352         },
9353         {
9354                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9355                 .doit = nl80211_get_power_save,
9356                 .policy = nl80211_policy,
9357                 /* can be retrieved by unprivileged users */
9358                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9359                                   NL80211_FLAG_NEED_RTNL,
9360         },
9361         {
9362                 .cmd = NL80211_CMD_SET_CQM,
9363                 .doit = nl80211_set_cqm,
9364                 .policy = nl80211_policy,
9365                 .flags = GENL_ADMIN_PERM,
9366                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9367                                   NL80211_FLAG_NEED_RTNL,
9368         },
9369         {
9370                 .cmd = NL80211_CMD_SET_CHANNEL,
9371                 .doit = nl80211_set_channel,
9372                 .policy = nl80211_policy,
9373                 .flags = GENL_ADMIN_PERM,
9374                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9375                                   NL80211_FLAG_NEED_RTNL,
9376         },
9377         {
9378                 .cmd = NL80211_CMD_SET_WDS_PEER,
9379                 .doit = nl80211_set_wds_peer,
9380                 .policy = nl80211_policy,
9381                 .flags = GENL_ADMIN_PERM,
9382                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9383                                   NL80211_FLAG_NEED_RTNL,
9384         },
9385         {
9386                 .cmd = NL80211_CMD_JOIN_MESH,
9387                 .doit = nl80211_join_mesh,
9388                 .policy = nl80211_policy,
9389                 .flags = GENL_ADMIN_PERM,
9390                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9391                                   NL80211_FLAG_NEED_RTNL,
9392         },
9393         {
9394                 .cmd = NL80211_CMD_LEAVE_MESH,
9395                 .doit = nl80211_leave_mesh,
9396                 .policy = nl80211_policy,
9397                 .flags = GENL_ADMIN_PERM,
9398                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9399                                   NL80211_FLAG_NEED_RTNL,
9400         },
9401 #ifdef CONFIG_PM
9402         {
9403                 .cmd = NL80211_CMD_GET_WOWLAN,
9404                 .doit = nl80211_get_wowlan,
9405                 .policy = nl80211_policy,
9406                 /* can be retrieved by unprivileged users */
9407                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9408                                   NL80211_FLAG_NEED_RTNL,
9409         },
9410         {
9411                 .cmd = NL80211_CMD_SET_WOWLAN,
9412                 .doit = nl80211_set_wowlan,
9413                 .policy = nl80211_policy,
9414                 .flags = GENL_ADMIN_PERM,
9415                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9416                                   NL80211_FLAG_NEED_RTNL,
9417         },
9418 #endif
9419         {
9420                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9421                 .doit = nl80211_set_rekey_data,
9422                 .policy = nl80211_policy,
9423                 .flags = GENL_ADMIN_PERM,
9424                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9425                                   NL80211_FLAG_NEED_RTNL,
9426         },
9427         {
9428                 .cmd = NL80211_CMD_TDLS_MGMT,
9429                 .doit = nl80211_tdls_mgmt,
9430                 .policy = nl80211_policy,
9431                 .flags = GENL_ADMIN_PERM,
9432                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9433                                   NL80211_FLAG_NEED_RTNL,
9434         },
9435         {
9436                 .cmd = NL80211_CMD_TDLS_OPER,
9437                 .doit = nl80211_tdls_oper,
9438                 .policy = nl80211_policy,
9439                 .flags = GENL_ADMIN_PERM,
9440                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9441                                   NL80211_FLAG_NEED_RTNL,
9442         },
9443         {
9444                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9445                 .doit = nl80211_register_unexpected_frame,
9446                 .policy = nl80211_policy,
9447                 .flags = GENL_ADMIN_PERM,
9448                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9449                                   NL80211_FLAG_NEED_RTNL,
9450         },
9451         {
9452                 .cmd = NL80211_CMD_PROBE_CLIENT,
9453                 .doit = nl80211_probe_client,
9454                 .policy = nl80211_policy,
9455                 .flags = GENL_ADMIN_PERM,
9456                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9457                                   NL80211_FLAG_NEED_RTNL,
9458         },
9459         {
9460                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9461                 .doit = nl80211_register_beacons,
9462                 .policy = nl80211_policy,
9463                 .flags = GENL_ADMIN_PERM,
9464                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9465                                   NL80211_FLAG_NEED_RTNL,
9466         },
9467         {
9468                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9469                 .doit = nl80211_set_noack_map,
9470                 .policy = nl80211_policy,
9471                 .flags = GENL_ADMIN_PERM,
9472                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9473                                   NL80211_FLAG_NEED_RTNL,
9474         },
9475         {
9476                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9477                 .doit = nl80211_start_p2p_device,
9478                 .policy = nl80211_policy,
9479                 .flags = GENL_ADMIN_PERM,
9480                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9481                                   NL80211_FLAG_NEED_RTNL,
9482         },
9483         {
9484                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9485                 .doit = nl80211_stop_p2p_device,
9486                 .policy = nl80211_policy,
9487                 .flags = GENL_ADMIN_PERM,
9488                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9489                                   NL80211_FLAG_NEED_RTNL,
9490         },
9491         {
9492                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9493                 .doit = nl80211_set_mcast_rate,
9494                 .policy = nl80211_policy,
9495                 .flags = GENL_ADMIN_PERM,
9496                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9497                                   NL80211_FLAG_NEED_RTNL,
9498         },
9499         {
9500                 .cmd = NL80211_CMD_SET_MAC_ACL,
9501                 .doit = nl80211_set_mac_acl,
9502                 .policy = nl80211_policy,
9503                 .flags = GENL_ADMIN_PERM,
9504                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9505                                   NL80211_FLAG_NEED_RTNL,
9506         },
9507         {
9508                 .cmd = NL80211_CMD_RADAR_DETECT,
9509                 .doit = nl80211_start_radar_detection,
9510                 .policy = nl80211_policy,
9511                 .flags = GENL_ADMIN_PERM,
9512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9513                                   NL80211_FLAG_NEED_RTNL,
9514         },
9515         {
9516                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9517                 .doit = nl80211_get_protocol_features,
9518                 .policy = nl80211_policy,
9519         },
9520         {
9521                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9522                 .doit = nl80211_update_ft_ies,
9523                 .policy = nl80211_policy,
9524                 .flags = GENL_ADMIN_PERM,
9525                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9526                                   NL80211_FLAG_NEED_RTNL,
9527         },
9528         {
9529                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9530                 .doit = nl80211_crit_protocol_start,
9531                 .policy = nl80211_policy,
9532                 .flags = GENL_ADMIN_PERM,
9533                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9534                                   NL80211_FLAG_NEED_RTNL,
9535         },
9536         {
9537                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9538                 .doit = nl80211_crit_protocol_stop,
9539                 .policy = nl80211_policy,
9540                 .flags = GENL_ADMIN_PERM,
9541                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9542                                   NL80211_FLAG_NEED_RTNL,
9543         },
9544         {
9545                 .cmd = NL80211_CMD_GET_COALESCE,
9546                 .doit = nl80211_get_coalesce,
9547                 .policy = nl80211_policy,
9548                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9549                                   NL80211_FLAG_NEED_RTNL,
9550         },
9551         {
9552                 .cmd = NL80211_CMD_SET_COALESCE,
9553                 .doit = nl80211_set_coalesce,
9554                 .policy = nl80211_policy,
9555                 .flags = GENL_ADMIN_PERM,
9556                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9557                                   NL80211_FLAG_NEED_RTNL,
9558         },
9559         {
9560                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9561                 .doit = nl80211_channel_switch,
9562                 .policy = nl80211_policy,
9563                 .flags = GENL_ADMIN_PERM,
9564                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9565                                   NL80211_FLAG_NEED_RTNL,
9566         },
9567 };
9568
9569 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9570         .name = "mlme",
9571 };
9572
9573 /* multicast groups */
9574 static struct genl_multicast_group nl80211_config_mcgrp = {
9575         .name = "config",
9576 };
9577 static struct genl_multicast_group nl80211_scan_mcgrp = {
9578         .name = "scan",
9579 };
9580 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9581         .name = "regulatory",
9582 };
9583
9584 /* notification functions */
9585
9586 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9587 {
9588         struct sk_buff *msg;
9589         struct nl80211_dump_wiphy_state state = {};
9590
9591         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9592         if (!msg)
9593                 return;
9594
9595         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9596                 nlmsg_free(msg);
9597                 return;
9598         }
9599
9600         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9601                                 nl80211_config_mcgrp.id, GFP_KERNEL);
9602 }
9603
9604 static int nl80211_add_scan_req(struct sk_buff *msg,
9605                                 struct cfg80211_registered_device *rdev)
9606 {
9607         struct cfg80211_scan_request *req = rdev->scan_req;
9608         struct nlattr *nest;
9609         int i;
9610
9611         if (WARN_ON(!req))
9612                 return 0;
9613
9614         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9615         if (!nest)
9616                 goto nla_put_failure;
9617         for (i = 0; i < req->n_ssids; i++) {
9618                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9619                         goto nla_put_failure;
9620         }
9621         nla_nest_end(msg, nest);
9622
9623         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9624         if (!nest)
9625                 goto nla_put_failure;
9626         for (i = 0; i < req->n_channels; i++) {
9627                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9628                         goto nla_put_failure;
9629         }
9630         nla_nest_end(msg, nest);
9631
9632         if (req->ie &&
9633             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9634                 goto nla_put_failure;
9635
9636         if (req->flags)
9637                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9638
9639         return 0;
9640  nla_put_failure:
9641         return -ENOBUFS;
9642 }
9643
9644 static int nl80211_send_scan_msg(struct sk_buff *msg,
9645                                  struct cfg80211_registered_device *rdev,
9646                                  struct wireless_dev *wdev,
9647                                  u32 portid, u32 seq, int flags,
9648                                  u32 cmd)
9649 {
9650         void *hdr;
9651
9652         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9653         if (!hdr)
9654                 return -1;
9655
9656         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9657             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9658                                          wdev->netdev->ifindex)) ||
9659             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9660                 goto nla_put_failure;
9661
9662         /* ignore errors and send incomplete event anyway */
9663         nl80211_add_scan_req(msg, rdev);
9664
9665         return genlmsg_end(msg, hdr);
9666
9667  nla_put_failure:
9668         genlmsg_cancel(msg, hdr);
9669         return -EMSGSIZE;
9670 }
9671
9672 static int
9673 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9674                             struct cfg80211_registered_device *rdev,
9675                             struct net_device *netdev,
9676                             u32 portid, u32 seq, int flags, u32 cmd)
9677 {
9678         void *hdr;
9679
9680         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9681         if (!hdr)
9682                 return -1;
9683
9684         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9685             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9686                 goto nla_put_failure;
9687
9688         return genlmsg_end(msg, hdr);
9689
9690  nla_put_failure:
9691         genlmsg_cancel(msg, hdr);
9692         return -EMSGSIZE;
9693 }
9694
9695 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9696                              struct wireless_dev *wdev)
9697 {
9698         struct sk_buff *msg;
9699
9700         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9701         if (!msg)
9702                 return;
9703
9704         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9705                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9706                 nlmsg_free(msg);
9707                 return;
9708         }
9709
9710         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9711                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9712 }
9713
9714 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9715                             struct wireless_dev *wdev)
9716 {
9717         struct sk_buff *msg;
9718
9719         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9720         if (!msg)
9721                 return;
9722
9723         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9724                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9725                 nlmsg_free(msg);
9726                 return;
9727         }
9728
9729         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9730                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9731 }
9732
9733 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9734                                struct wireless_dev *wdev)
9735 {
9736         struct sk_buff *msg;
9737
9738         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9739         if (!msg)
9740                 return;
9741
9742         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9743                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9744                 nlmsg_free(msg);
9745                 return;
9746         }
9747
9748         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9749                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9750 }
9751
9752 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9753                                      struct net_device *netdev)
9754 {
9755         struct sk_buff *msg;
9756
9757         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9758         if (!msg)
9759                 return;
9760
9761         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9762                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9763                 nlmsg_free(msg);
9764                 return;
9765         }
9766
9767         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9768                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9769 }
9770
9771 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9772                              struct net_device *netdev, u32 cmd)
9773 {
9774         struct sk_buff *msg;
9775
9776         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9777         if (!msg)
9778                 return;
9779
9780         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9781                 nlmsg_free(msg);
9782                 return;
9783         }
9784
9785         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9786                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9787 }
9788
9789 /*
9790  * This can happen on global regulatory changes or device specific settings
9791  * based on custom world regulatory domains.
9792  */
9793 void nl80211_send_reg_change_event(struct regulatory_request *request)
9794 {
9795         struct sk_buff *msg;
9796         void *hdr;
9797
9798         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9799         if (!msg)
9800                 return;
9801
9802         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9803         if (!hdr) {
9804                 nlmsg_free(msg);
9805                 return;
9806         }
9807
9808         /* Userspace can always count this one always being set */
9809         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9810                 goto nla_put_failure;
9811
9812         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9813                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9814                                NL80211_REGDOM_TYPE_WORLD))
9815                         goto nla_put_failure;
9816         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9817                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9818                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9819                         goto nla_put_failure;
9820         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9821                    request->intersect) {
9822                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9823                                NL80211_REGDOM_TYPE_INTERSECTION))
9824                         goto nla_put_failure;
9825         } else {
9826                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9827                                NL80211_REGDOM_TYPE_COUNTRY) ||
9828                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9829                                    request->alpha2))
9830                         goto nla_put_failure;
9831         }
9832
9833         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9834             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9835                 goto nla_put_failure;
9836
9837         genlmsg_end(msg, hdr);
9838
9839         rcu_read_lock();
9840         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9841                                 GFP_ATOMIC);
9842         rcu_read_unlock();
9843
9844         return;
9845
9846 nla_put_failure:
9847         genlmsg_cancel(msg, hdr);
9848         nlmsg_free(msg);
9849 }
9850
9851 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9852                                     struct net_device *netdev,
9853                                     const u8 *buf, size_t len,
9854                                     enum nl80211_commands cmd, gfp_t gfp)
9855 {
9856         struct sk_buff *msg;
9857         void *hdr;
9858
9859         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9860         if (!msg)
9861                 return;
9862
9863         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9864         if (!hdr) {
9865                 nlmsg_free(msg);
9866                 return;
9867         }
9868
9869         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9870             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9871             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9872                 goto nla_put_failure;
9873
9874         genlmsg_end(msg, hdr);
9875
9876         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9877                                 nl80211_mlme_mcgrp.id, gfp);
9878         return;
9879
9880  nla_put_failure:
9881         genlmsg_cancel(msg, hdr);
9882         nlmsg_free(msg);
9883 }
9884
9885 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9886                           struct net_device *netdev, const u8 *buf,
9887                           size_t len, gfp_t gfp)
9888 {
9889         nl80211_send_mlme_event(rdev, netdev, buf, len,
9890                                 NL80211_CMD_AUTHENTICATE, gfp);
9891 }
9892
9893 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9894                            struct net_device *netdev, const u8 *buf,
9895                            size_t len, gfp_t gfp)
9896 {
9897         nl80211_send_mlme_event(rdev, netdev, buf, len,
9898                                 NL80211_CMD_ASSOCIATE, gfp);
9899 }
9900
9901 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9902                          struct net_device *netdev, const u8 *buf,
9903                          size_t len, gfp_t gfp)
9904 {
9905         nl80211_send_mlme_event(rdev, netdev, buf, len,
9906                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9907 }
9908
9909 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9910                            struct net_device *netdev, const u8 *buf,
9911                            size_t len, gfp_t gfp)
9912 {
9913         nl80211_send_mlme_event(rdev, netdev, buf, len,
9914                                 NL80211_CMD_DISASSOCIATE, gfp);
9915 }
9916
9917 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9918                                   size_t len)
9919 {
9920         struct wireless_dev *wdev = dev->ieee80211_ptr;
9921         struct wiphy *wiphy = wdev->wiphy;
9922         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9923         const struct ieee80211_mgmt *mgmt = (void *)buf;
9924         u32 cmd;
9925
9926         if (WARN_ON(len < 2))
9927                 return;
9928
9929         if (ieee80211_is_deauth(mgmt->frame_control))
9930                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9931         else
9932                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9933
9934         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9935         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9936 }
9937 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9938
9939 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9940                                       struct net_device *netdev, int cmd,
9941                                       const u8 *addr, gfp_t gfp)
9942 {
9943         struct sk_buff *msg;
9944         void *hdr;
9945
9946         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9947         if (!msg)
9948                 return;
9949
9950         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9951         if (!hdr) {
9952                 nlmsg_free(msg);
9953                 return;
9954         }
9955
9956         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9957             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9958             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9959             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9960                 goto nla_put_failure;
9961
9962         genlmsg_end(msg, hdr);
9963
9964         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9965                                 nl80211_mlme_mcgrp.id, gfp);
9966         return;
9967
9968  nla_put_failure:
9969         genlmsg_cancel(msg, hdr);
9970         nlmsg_free(msg);
9971 }
9972
9973 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9974                                struct net_device *netdev, const u8 *addr,
9975                                gfp_t gfp)
9976 {
9977         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9978                                   addr, gfp);
9979 }
9980
9981 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9982                                 struct net_device *netdev, const u8 *addr,
9983                                 gfp_t gfp)
9984 {
9985         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9986                                   addr, gfp);
9987 }
9988
9989 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9990                                  struct net_device *netdev, const u8 *bssid,
9991                                  const u8 *req_ie, size_t req_ie_len,
9992                                  const u8 *resp_ie, size_t resp_ie_len,
9993                                  u16 status, gfp_t gfp)
9994 {
9995         struct sk_buff *msg;
9996         void *hdr;
9997
9998         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9999         if (!msg)
10000                 return;
10001
10002         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10003         if (!hdr) {
10004                 nlmsg_free(msg);
10005                 return;
10006         }
10007
10008         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10009             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10010             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10011             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10012             (req_ie &&
10013              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10014             (resp_ie &&
10015              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10016                 goto nla_put_failure;
10017
10018         genlmsg_end(msg, hdr);
10019
10020         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10021                                 nl80211_mlme_mcgrp.id, gfp);
10022         return;
10023
10024  nla_put_failure:
10025         genlmsg_cancel(msg, hdr);
10026         nlmsg_free(msg);
10027
10028 }
10029
10030 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10031                          struct net_device *netdev, const u8 *bssid,
10032                          const u8 *req_ie, size_t req_ie_len,
10033                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10034 {
10035         struct sk_buff *msg;
10036         void *hdr;
10037
10038         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10039         if (!msg)
10040                 return;
10041
10042         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10043         if (!hdr) {
10044                 nlmsg_free(msg);
10045                 return;
10046         }
10047
10048         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10049             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10050             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10051             (req_ie &&
10052              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10053             (resp_ie &&
10054              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10055                 goto nla_put_failure;
10056
10057         genlmsg_end(msg, hdr);
10058
10059         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10060                                 nl80211_mlme_mcgrp.id, gfp);
10061         return;
10062
10063  nla_put_failure:
10064         genlmsg_cancel(msg, hdr);
10065         nlmsg_free(msg);
10066
10067 }
10068
10069 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10070                                struct net_device *netdev, u16 reason,
10071                                const u8 *ie, size_t ie_len, bool from_ap)
10072 {
10073         struct sk_buff *msg;
10074         void *hdr;
10075
10076         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10077         if (!msg)
10078                 return;
10079
10080         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10081         if (!hdr) {
10082                 nlmsg_free(msg);
10083                 return;
10084         }
10085
10086         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10087             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10088             (from_ap && reason &&
10089              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10090             (from_ap &&
10091              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10092             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10093                 goto nla_put_failure;
10094
10095         genlmsg_end(msg, hdr);
10096
10097         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10098                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10099         return;
10100
10101  nla_put_failure:
10102         genlmsg_cancel(msg, hdr);
10103         nlmsg_free(msg);
10104
10105 }
10106
10107 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10108                              struct net_device *netdev, const u8 *bssid,
10109                              gfp_t gfp)
10110 {
10111         struct sk_buff *msg;
10112         void *hdr;
10113
10114         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10115         if (!msg)
10116                 return;
10117
10118         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10119         if (!hdr) {
10120                 nlmsg_free(msg);
10121                 return;
10122         }
10123
10124         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10125             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10126             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10127                 goto nla_put_failure;
10128
10129         genlmsg_end(msg, hdr);
10130
10131         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10132                                 nl80211_mlme_mcgrp.id, gfp);
10133         return;
10134
10135  nla_put_failure:
10136         genlmsg_cancel(msg, hdr);
10137         nlmsg_free(msg);
10138 }
10139
10140 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10141                                         const u8* ie, u8 ie_len, gfp_t gfp)
10142 {
10143         struct wireless_dev *wdev = dev->ieee80211_ptr;
10144         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10145         struct sk_buff *msg;
10146         void *hdr;
10147
10148         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10149                 return;
10150
10151         trace_cfg80211_notify_new_peer_candidate(dev, addr);
10152
10153         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10154         if (!msg)
10155                 return;
10156
10157         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10158         if (!hdr) {
10159                 nlmsg_free(msg);
10160                 return;
10161         }
10162
10163         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10164             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10165             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10166             (ie_len && ie &&
10167              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10168                 goto nla_put_failure;
10169
10170         genlmsg_end(msg, hdr);
10171
10172         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10173                                 nl80211_mlme_mcgrp.id, gfp);
10174         return;
10175
10176  nla_put_failure:
10177         genlmsg_cancel(msg, hdr);
10178         nlmsg_free(msg);
10179 }
10180 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10181
10182 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10183                                  struct net_device *netdev, const u8 *addr,
10184                                  enum nl80211_key_type key_type, int key_id,
10185                                  const u8 *tsc, gfp_t gfp)
10186 {
10187         struct sk_buff *msg;
10188         void *hdr;
10189
10190         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10191         if (!msg)
10192                 return;
10193
10194         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10195         if (!hdr) {
10196                 nlmsg_free(msg);
10197                 return;
10198         }
10199
10200         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10201             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10202             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10203             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10204             (key_id != -1 &&
10205              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10206             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10207                 goto nla_put_failure;
10208
10209         genlmsg_end(msg, hdr);
10210
10211         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10212                                 nl80211_mlme_mcgrp.id, gfp);
10213         return;
10214
10215  nla_put_failure:
10216         genlmsg_cancel(msg, hdr);
10217         nlmsg_free(msg);
10218 }
10219
10220 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10221                                     struct ieee80211_channel *channel_before,
10222                                     struct ieee80211_channel *channel_after)
10223 {
10224         struct sk_buff *msg;
10225         void *hdr;
10226         struct nlattr *nl_freq;
10227
10228         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10229         if (!msg)
10230                 return;
10231
10232         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10233         if (!hdr) {
10234                 nlmsg_free(msg);
10235                 return;
10236         }
10237
10238         /*
10239          * Since we are applying the beacon hint to a wiphy we know its
10240          * wiphy_idx is valid
10241          */
10242         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10243                 goto nla_put_failure;
10244
10245         /* Before */
10246         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10247         if (!nl_freq)
10248                 goto nla_put_failure;
10249         if (nl80211_msg_put_channel(msg, channel_before, false))
10250                 goto nla_put_failure;
10251         nla_nest_end(msg, nl_freq);
10252
10253         /* After */
10254         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10255         if (!nl_freq)
10256                 goto nla_put_failure;
10257         if (nl80211_msg_put_channel(msg, channel_after, false))
10258                 goto nla_put_failure;
10259         nla_nest_end(msg, nl_freq);
10260
10261         genlmsg_end(msg, hdr);
10262
10263         rcu_read_lock();
10264         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10265                                 GFP_ATOMIC);
10266         rcu_read_unlock();
10267
10268         return;
10269
10270 nla_put_failure:
10271         genlmsg_cancel(msg, hdr);
10272         nlmsg_free(msg);
10273 }
10274
10275 static void nl80211_send_remain_on_chan_event(
10276         int cmd, struct cfg80211_registered_device *rdev,
10277         struct wireless_dev *wdev, u64 cookie,
10278         struct ieee80211_channel *chan,
10279         unsigned int duration, gfp_t gfp)
10280 {
10281         struct sk_buff *msg;
10282         void *hdr;
10283
10284         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10285         if (!msg)
10286                 return;
10287
10288         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10289         if (!hdr) {
10290                 nlmsg_free(msg);
10291                 return;
10292         }
10293
10294         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10295             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10296                                          wdev->netdev->ifindex)) ||
10297             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10298             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10299             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10300                         NL80211_CHAN_NO_HT) ||
10301             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10302                 goto nla_put_failure;
10303
10304         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10305             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10306                 goto nla_put_failure;
10307
10308         genlmsg_end(msg, hdr);
10309
10310         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10311                                 nl80211_mlme_mcgrp.id, gfp);
10312         return;
10313
10314  nla_put_failure:
10315         genlmsg_cancel(msg, hdr);
10316         nlmsg_free(msg);
10317 }
10318
10319 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10320                                struct ieee80211_channel *chan,
10321                                unsigned int duration, gfp_t gfp)
10322 {
10323         struct wiphy *wiphy = wdev->wiphy;
10324         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10325
10326         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10327         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10328                                           rdev, wdev, cookie, chan,
10329                                           duration, gfp);
10330 }
10331 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10332
10333 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10334                                         struct ieee80211_channel *chan,
10335                                         gfp_t gfp)
10336 {
10337         struct wiphy *wiphy = wdev->wiphy;
10338         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10339
10340         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10341         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10342                                           rdev, wdev, cookie, chan, 0, gfp);
10343 }
10344 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10345
10346 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10347                       struct station_info *sinfo, gfp_t gfp)
10348 {
10349         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10350         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10351         struct sk_buff *msg;
10352
10353         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10354
10355         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10356         if (!msg)
10357                 return;
10358
10359         if (nl80211_send_station(msg, 0, 0, 0,
10360                                  rdev, dev, mac_addr, sinfo) < 0) {
10361                 nlmsg_free(msg);
10362                 return;
10363         }
10364
10365         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10366                                 nl80211_mlme_mcgrp.id, gfp);
10367 }
10368 EXPORT_SYMBOL(cfg80211_new_sta);
10369
10370 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10371 {
10372         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10373         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10374         struct sk_buff *msg;
10375         void *hdr;
10376
10377         trace_cfg80211_del_sta(dev, mac_addr);
10378
10379         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10380         if (!msg)
10381                 return;
10382
10383         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10384         if (!hdr) {
10385                 nlmsg_free(msg);
10386                 return;
10387         }
10388
10389         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10390             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10391                 goto nla_put_failure;
10392
10393         genlmsg_end(msg, hdr);
10394
10395         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10396                                 nl80211_mlme_mcgrp.id, gfp);
10397         return;
10398
10399  nla_put_failure:
10400         genlmsg_cancel(msg, hdr);
10401         nlmsg_free(msg);
10402 }
10403 EXPORT_SYMBOL(cfg80211_del_sta);
10404
10405 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10406                           enum nl80211_connect_failed_reason reason,
10407                           gfp_t gfp)
10408 {
10409         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10410         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10411         struct sk_buff *msg;
10412         void *hdr;
10413
10414         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10415         if (!msg)
10416                 return;
10417
10418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10419         if (!hdr) {
10420                 nlmsg_free(msg);
10421                 return;
10422         }
10423
10424         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10425             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10426             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10427                 goto nla_put_failure;
10428
10429         genlmsg_end(msg, hdr);
10430
10431         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10432                                 nl80211_mlme_mcgrp.id, gfp);
10433         return;
10434
10435  nla_put_failure:
10436         genlmsg_cancel(msg, hdr);
10437         nlmsg_free(msg);
10438 }
10439 EXPORT_SYMBOL(cfg80211_conn_failed);
10440
10441 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10442                                        const u8 *addr, gfp_t gfp)
10443 {
10444         struct wireless_dev *wdev = dev->ieee80211_ptr;
10445         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10446         struct sk_buff *msg;
10447         void *hdr;
10448         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10449
10450         if (!nlportid)
10451                 return false;
10452
10453         msg = nlmsg_new(100, gfp);
10454         if (!msg)
10455                 return true;
10456
10457         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10458         if (!hdr) {
10459                 nlmsg_free(msg);
10460                 return true;
10461         }
10462
10463         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10464             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10465             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10466                 goto nla_put_failure;
10467
10468         genlmsg_end(msg, hdr);
10469         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10470         return true;
10471
10472  nla_put_failure:
10473         genlmsg_cancel(msg, hdr);
10474         nlmsg_free(msg);
10475         return true;
10476 }
10477
10478 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10479                                 const u8 *addr, gfp_t gfp)
10480 {
10481         struct wireless_dev *wdev = dev->ieee80211_ptr;
10482         bool ret;
10483
10484         trace_cfg80211_rx_spurious_frame(dev, addr);
10485
10486         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10487                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10488                 trace_cfg80211_return_bool(false);
10489                 return false;
10490         }
10491         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10492                                          addr, gfp);
10493         trace_cfg80211_return_bool(ret);
10494         return ret;
10495 }
10496 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10497
10498 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10499                                         const u8 *addr, gfp_t gfp)
10500 {
10501         struct wireless_dev *wdev = dev->ieee80211_ptr;
10502         bool ret;
10503
10504         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10505
10506         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10507                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10508                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10509                 trace_cfg80211_return_bool(false);
10510                 return false;
10511         }
10512         ret = __nl80211_unexpected_frame(dev,
10513                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10514                                          addr, gfp);
10515         trace_cfg80211_return_bool(ret);
10516         return ret;
10517 }
10518 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10519
10520 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10521                       struct wireless_dev *wdev, u32 nlportid,
10522                       int freq, int sig_dbm,
10523                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10524 {
10525         struct net_device *netdev = wdev->netdev;
10526         struct sk_buff *msg;
10527         void *hdr;
10528
10529         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10530         if (!msg)
10531                 return -ENOMEM;
10532
10533         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10534         if (!hdr) {
10535                 nlmsg_free(msg);
10536                 return -ENOMEM;
10537         }
10538
10539         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10540             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10541                                         netdev->ifindex)) ||
10542             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10543             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10544             (sig_dbm &&
10545              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10546             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10547             (flags &&
10548              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10549                 goto nla_put_failure;
10550
10551         genlmsg_end(msg, hdr);
10552
10553         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10554
10555  nla_put_failure:
10556         genlmsg_cancel(msg, hdr);
10557         nlmsg_free(msg);
10558         return -ENOBUFS;
10559 }
10560
10561 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10562                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10563 {
10564         struct wiphy *wiphy = wdev->wiphy;
10565         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10566         struct net_device *netdev = wdev->netdev;
10567         struct sk_buff *msg;
10568         void *hdr;
10569
10570         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10571
10572         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10573         if (!msg)
10574                 return;
10575
10576         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10577         if (!hdr) {
10578                 nlmsg_free(msg);
10579                 return;
10580         }
10581
10582         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10583             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10584                                    netdev->ifindex)) ||
10585             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10586             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10587             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10588             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10589                 goto nla_put_failure;
10590
10591         genlmsg_end(msg, hdr);
10592
10593         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10594                                 nl80211_mlme_mcgrp.id, gfp);
10595         return;
10596
10597  nla_put_failure:
10598         genlmsg_cancel(msg, hdr);
10599         nlmsg_free(msg);
10600 }
10601 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10602
10603 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10604                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10605                               gfp_t gfp)
10606 {
10607         struct wireless_dev *wdev = dev->ieee80211_ptr;
10608         struct wiphy *wiphy = wdev->wiphy;
10609         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10610         struct sk_buff *msg;
10611         struct nlattr *pinfoattr;
10612         void *hdr;
10613
10614         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10615
10616         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10617         if (!msg)
10618                 return;
10619
10620         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10621         if (!hdr) {
10622                 nlmsg_free(msg);
10623                 return;
10624         }
10625
10626         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10627             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10628                 goto nla_put_failure;
10629
10630         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10631         if (!pinfoattr)
10632                 goto nla_put_failure;
10633
10634         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10635                         rssi_event))
10636                 goto nla_put_failure;
10637
10638         nla_nest_end(msg, pinfoattr);
10639
10640         genlmsg_end(msg, hdr);
10641
10642         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10643                                 nl80211_mlme_mcgrp.id, gfp);
10644         return;
10645
10646  nla_put_failure:
10647         genlmsg_cancel(msg, hdr);
10648         nlmsg_free(msg);
10649 }
10650 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10651
10652 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10653                                      struct net_device *netdev, const u8 *bssid,
10654                                      const u8 *replay_ctr, gfp_t gfp)
10655 {
10656         struct sk_buff *msg;
10657         struct nlattr *rekey_attr;
10658         void *hdr;
10659
10660         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10661         if (!msg)
10662                 return;
10663
10664         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10665         if (!hdr) {
10666                 nlmsg_free(msg);
10667                 return;
10668         }
10669
10670         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10671             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10672             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10673                 goto nla_put_failure;
10674
10675         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10676         if (!rekey_attr)
10677                 goto nla_put_failure;
10678
10679         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10680                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10681                 goto nla_put_failure;
10682
10683         nla_nest_end(msg, rekey_attr);
10684
10685         genlmsg_end(msg, hdr);
10686
10687         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10688                                 nl80211_mlme_mcgrp.id, gfp);
10689         return;
10690
10691  nla_put_failure:
10692         genlmsg_cancel(msg, hdr);
10693         nlmsg_free(msg);
10694 }
10695
10696 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10697                                const u8 *replay_ctr, gfp_t gfp)
10698 {
10699         struct wireless_dev *wdev = dev->ieee80211_ptr;
10700         struct wiphy *wiphy = wdev->wiphy;
10701         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10702
10703         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10704         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10705 }
10706 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10707
10708 static void
10709 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10710                                struct net_device *netdev, int index,
10711                                const u8 *bssid, bool preauth, gfp_t gfp)
10712 {
10713         struct sk_buff *msg;
10714         struct nlattr *attr;
10715         void *hdr;
10716
10717         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10718         if (!msg)
10719                 return;
10720
10721         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10722         if (!hdr) {
10723                 nlmsg_free(msg);
10724                 return;
10725         }
10726
10727         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10728             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10729                 goto nla_put_failure;
10730
10731         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10732         if (!attr)
10733                 goto nla_put_failure;
10734
10735         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10736             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10737             (preauth &&
10738              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10739                 goto nla_put_failure;
10740
10741         nla_nest_end(msg, attr);
10742
10743         genlmsg_end(msg, hdr);
10744
10745         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10746                                 nl80211_mlme_mcgrp.id, gfp);
10747         return;
10748
10749  nla_put_failure:
10750         genlmsg_cancel(msg, hdr);
10751         nlmsg_free(msg);
10752 }
10753
10754 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10755                                      const u8 *bssid, bool preauth, gfp_t gfp)
10756 {
10757         struct wireless_dev *wdev = dev->ieee80211_ptr;
10758         struct wiphy *wiphy = wdev->wiphy;
10759         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10760
10761         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10762         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10763 }
10764 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10765
10766 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10767                                      struct net_device *netdev,
10768                                      struct cfg80211_chan_def *chandef,
10769                                      gfp_t gfp)
10770 {
10771         struct sk_buff *msg;
10772         void *hdr;
10773
10774         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10775         if (!msg)
10776                 return;
10777
10778         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10779         if (!hdr) {
10780                 nlmsg_free(msg);
10781                 return;
10782         }
10783
10784         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10785                 goto nla_put_failure;
10786
10787         if (nl80211_send_chandef(msg, chandef))
10788                 goto nla_put_failure;
10789
10790         genlmsg_end(msg, hdr);
10791
10792         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10793                                 nl80211_mlme_mcgrp.id, gfp);
10794         return;
10795
10796  nla_put_failure:
10797         genlmsg_cancel(msg, hdr);
10798         nlmsg_free(msg);
10799 }
10800
10801 void cfg80211_ch_switch_notify(struct net_device *dev,
10802                                struct cfg80211_chan_def *chandef)
10803 {
10804         struct wireless_dev *wdev = dev->ieee80211_ptr;
10805         struct wiphy *wiphy = wdev->wiphy;
10806         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10807
10808         trace_cfg80211_ch_switch_notify(dev, chandef);
10809
10810         wdev_lock(wdev);
10811
10812         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10813                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10814                     wdev->iftype != NL80211_IFTYPE_ADHOC &&
10815                     wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10816                 goto out;
10817
10818         wdev->channel = chandef->chan;
10819         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10820 out:
10821         wdev_unlock(wdev);
10822         return;
10823 }
10824 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10825
10826 void cfg80211_cqm_txe_notify(struct net_device *dev,
10827                              const u8 *peer, u32 num_packets,
10828                              u32 rate, u32 intvl, gfp_t gfp)
10829 {
10830         struct wireless_dev *wdev = dev->ieee80211_ptr;
10831         struct wiphy *wiphy = wdev->wiphy;
10832         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10833         struct sk_buff *msg;
10834         struct nlattr *pinfoattr;
10835         void *hdr;
10836
10837         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10838         if (!msg)
10839                 return;
10840
10841         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10842         if (!hdr) {
10843                 nlmsg_free(msg);
10844                 return;
10845         }
10846
10847         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10848             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10849             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10850                 goto nla_put_failure;
10851
10852         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10853         if (!pinfoattr)
10854                 goto nla_put_failure;
10855
10856         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10857                 goto nla_put_failure;
10858
10859         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10860                 goto nla_put_failure;
10861
10862         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10863                 goto nla_put_failure;
10864
10865         nla_nest_end(msg, pinfoattr);
10866
10867         genlmsg_end(msg, hdr);
10868
10869         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10870                                 nl80211_mlme_mcgrp.id, gfp);
10871         return;
10872
10873  nla_put_failure:
10874         genlmsg_cancel(msg, hdr);
10875         nlmsg_free(msg);
10876 }
10877 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10878
10879 void
10880 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10881                      struct cfg80211_chan_def *chandef,
10882                      enum nl80211_radar_event event,
10883                      struct net_device *netdev, gfp_t gfp)
10884 {
10885         struct sk_buff *msg;
10886         void *hdr;
10887
10888         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10889         if (!msg)
10890                 return;
10891
10892         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10893         if (!hdr) {
10894                 nlmsg_free(msg);
10895                 return;
10896         }
10897
10898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10899                 goto nla_put_failure;
10900
10901         /* NOP and radar events don't need a netdev parameter */
10902         if (netdev) {
10903                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10904
10905                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10906                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10907                         goto nla_put_failure;
10908         }
10909
10910         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10911                 goto nla_put_failure;
10912
10913         if (nl80211_send_chandef(msg, chandef))
10914                 goto nla_put_failure;
10915
10916         genlmsg_end(msg, hdr);
10917
10918         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10919                                 nl80211_mlme_mcgrp.id, gfp);
10920         return;
10921
10922  nla_put_failure:
10923         genlmsg_cancel(msg, hdr);
10924         nlmsg_free(msg);
10925 }
10926
10927 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10928                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10929 {
10930         struct wireless_dev *wdev = dev->ieee80211_ptr;
10931         struct wiphy *wiphy = wdev->wiphy;
10932         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10933         struct sk_buff *msg;
10934         struct nlattr *pinfoattr;
10935         void *hdr;
10936
10937         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10938
10939         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10940         if (!msg)
10941                 return;
10942
10943         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10944         if (!hdr) {
10945                 nlmsg_free(msg);
10946                 return;
10947         }
10948
10949         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10950             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10951             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10952                 goto nla_put_failure;
10953
10954         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10955         if (!pinfoattr)
10956                 goto nla_put_failure;
10957
10958         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10959                 goto nla_put_failure;
10960
10961         nla_nest_end(msg, pinfoattr);
10962
10963         genlmsg_end(msg, hdr);
10964
10965         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10966                                 nl80211_mlme_mcgrp.id, gfp);
10967         return;
10968
10969  nla_put_failure:
10970         genlmsg_cancel(msg, hdr);
10971         nlmsg_free(msg);
10972 }
10973 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10974
10975 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10976                            u64 cookie, bool acked, gfp_t gfp)
10977 {
10978         struct wireless_dev *wdev = dev->ieee80211_ptr;
10979         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10980         struct sk_buff *msg;
10981         void *hdr;
10982
10983         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10984
10985         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10986
10987         if (!msg)
10988                 return;
10989
10990         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10991         if (!hdr) {
10992                 nlmsg_free(msg);
10993                 return;
10994         }
10995
10996         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10997             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10998             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10999             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11000             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11001                 goto nla_put_failure;
11002
11003         genlmsg_end(msg, hdr);
11004
11005         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11006                                 nl80211_mlme_mcgrp.id, gfp);
11007         return;
11008
11009  nla_put_failure:
11010         genlmsg_cancel(msg, hdr);
11011         nlmsg_free(msg);
11012 }
11013 EXPORT_SYMBOL(cfg80211_probe_status);
11014
11015 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11016                                  const u8 *frame, size_t len,
11017                                  int freq, int sig_dbm)
11018 {
11019         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11020         struct sk_buff *msg;
11021         void *hdr;
11022         struct cfg80211_beacon_registration *reg;
11023
11024         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11025
11026         spin_lock_bh(&rdev->beacon_registrations_lock);
11027         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11028                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11029                 if (!msg) {
11030                         spin_unlock_bh(&rdev->beacon_registrations_lock);
11031                         return;
11032                 }
11033
11034                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11035                 if (!hdr)
11036                         goto nla_put_failure;
11037
11038                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11039                     (freq &&
11040                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11041                     (sig_dbm &&
11042                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11043                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11044                         goto nla_put_failure;
11045
11046                 genlmsg_end(msg, hdr);
11047
11048                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11049         }
11050         spin_unlock_bh(&rdev->beacon_registrations_lock);
11051         return;
11052
11053  nla_put_failure:
11054         spin_unlock_bh(&rdev->beacon_registrations_lock);
11055         if (hdr)
11056                 genlmsg_cancel(msg, hdr);
11057         nlmsg_free(msg);
11058 }
11059 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11060
11061 #ifdef CONFIG_PM
11062 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11063                                    struct cfg80211_wowlan_wakeup *wakeup,
11064                                    gfp_t gfp)
11065 {
11066         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11067         struct sk_buff *msg;
11068         void *hdr;
11069         int size = 200;
11070
11071         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11072
11073         if (wakeup)
11074                 size += wakeup->packet_present_len;
11075
11076         msg = nlmsg_new(size, gfp);
11077         if (!msg)
11078                 return;
11079
11080         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11081         if (!hdr)
11082                 goto free_msg;
11083
11084         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11085             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11086                 goto free_msg;
11087
11088         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11089                                         wdev->netdev->ifindex))
11090                 goto free_msg;
11091
11092         if (wakeup) {
11093                 struct nlattr *reasons;
11094
11095                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11096
11097                 if (wakeup->disconnect &&
11098                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11099                         goto free_msg;
11100                 if (wakeup->magic_pkt &&
11101                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11102                         goto free_msg;
11103                 if (wakeup->gtk_rekey_failure &&
11104                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11105                         goto free_msg;
11106                 if (wakeup->eap_identity_req &&
11107                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11108                         goto free_msg;
11109                 if (wakeup->four_way_handshake &&
11110                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11111                         goto free_msg;
11112                 if (wakeup->rfkill_release &&
11113                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11114                         goto free_msg;
11115
11116                 if (wakeup->pattern_idx >= 0 &&
11117                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11118                                 wakeup->pattern_idx))
11119                         goto free_msg;
11120
11121                 if (wakeup->tcp_match)
11122                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11123
11124                 if (wakeup->tcp_connlost)
11125                         nla_put_flag(msg,
11126                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11127
11128                 if (wakeup->tcp_nomoretokens)
11129                         nla_put_flag(msg,
11130                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11131
11132                 if (wakeup->packet) {
11133                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11134                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11135
11136                         if (!wakeup->packet_80211) {
11137                                 pkt_attr =
11138                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11139                                 len_attr =
11140                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11141                         }
11142
11143                         if (wakeup->packet_len &&
11144                             nla_put_u32(msg, len_attr, wakeup->packet_len))
11145                                 goto free_msg;
11146
11147                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11148                                     wakeup->packet))
11149                                 goto free_msg;
11150                 }
11151
11152                 nla_nest_end(msg, reasons);
11153         }
11154
11155         genlmsg_end(msg, hdr);
11156
11157         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11158                                 nl80211_mlme_mcgrp.id, gfp);
11159         return;
11160
11161  free_msg:
11162         nlmsg_free(msg);
11163 }
11164 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11165 #endif
11166
11167 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11168                                 enum nl80211_tdls_operation oper,
11169                                 u16 reason_code, gfp_t gfp)
11170 {
11171         struct wireless_dev *wdev = dev->ieee80211_ptr;
11172         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11173         struct sk_buff *msg;
11174         void *hdr;
11175
11176         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11177                                          reason_code);
11178
11179         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11180         if (!msg)
11181                 return;
11182
11183         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11184         if (!hdr) {
11185                 nlmsg_free(msg);
11186                 return;
11187         }
11188
11189         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11190             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11191             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11192             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11193             (reason_code > 0 &&
11194              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11195                 goto nla_put_failure;
11196
11197         genlmsg_end(msg, hdr);
11198
11199         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11200                                 nl80211_mlme_mcgrp.id, gfp);
11201         return;
11202
11203  nla_put_failure:
11204         genlmsg_cancel(msg, hdr);
11205         nlmsg_free(msg);
11206 }
11207 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11208
11209 static int nl80211_netlink_notify(struct notifier_block * nb,
11210                                   unsigned long state,
11211                                   void *_notify)
11212 {
11213         struct netlink_notify *notify = _notify;
11214         struct cfg80211_registered_device *rdev;
11215         struct wireless_dev *wdev;
11216         struct cfg80211_beacon_registration *reg, *tmp;
11217
11218         if (state != NETLINK_URELEASE)
11219                 return NOTIFY_DONE;
11220
11221         rcu_read_lock();
11222
11223         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11224                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11225                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11226
11227                 spin_lock_bh(&rdev->beacon_registrations_lock);
11228                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11229                                          list) {
11230                         if (reg->nlportid == notify->portid) {
11231                                 list_del(&reg->list);
11232                                 kfree(reg);
11233                                 break;
11234                         }
11235                 }
11236                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11237         }
11238
11239         rcu_read_unlock();
11240
11241         return NOTIFY_DONE;
11242 }
11243
11244 static struct notifier_block nl80211_netlink_notifier = {
11245         .notifier_call = nl80211_netlink_notify,
11246 };
11247
11248 void cfg80211_ft_event(struct net_device *netdev,
11249                        struct cfg80211_ft_event_params *ft_event)
11250 {
11251         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11252         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11253         struct sk_buff *msg;
11254         void *hdr;
11255
11256         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11257
11258         if (!ft_event->target_ap)
11259                 return;
11260
11261         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11262         if (!msg)
11263                 return;
11264
11265         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11266         if (!hdr) {
11267                 nlmsg_free(msg);
11268                 return;
11269         }
11270
11271         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11272         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11273         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11274         if (ft_event->ies)
11275                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11276         if (ft_event->ric_ies)
11277                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11278                         ft_event->ric_ies);
11279
11280         genlmsg_end(msg, hdr);
11281
11282         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11283                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11284 }
11285 EXPORT_SYMBOL(cfg80211_ft_event);
11286
11287 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11288 {
11289         struct cfg80211_registered_device *rdev;
11290         struct sk_buff *msg;
11291         void *hdr;
11292         u32 nlportid;
11293
11294         rdev = wiphy_to_dev(wdev->wiphy);
11295         if (!rdev->crit_proto_nlportid)
11296                 return;
11297
11298         nlportid = rdev->crit_proto_nlportid;
11299         rdev->crit_proto_nlportid = 0;
11300
11301         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11302         if (!msg)
11303                 return;
11304
11305         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11306         if (!hdr)
11307                 goto nla_put_failure;
11308
11309         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11310             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11311                 goto nla_put_failure;
11312
11313         genlmsg_end(msg, hdr);
11314
11315         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11316         return;
11317
11318  nla_put_failure:
11319         if (hdr)
11320                 genlmsg_cancel(msg, hdr);
11321         nlmsg_free(msg);
11322
11323 }
11324 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11325
11326 /* initialisation/exit functions */
11327
11328 int nl80211_init(void)
11329 {
11330         int err;
11331
11332         err = genl_register_family_with_ops(&nl80211_fam,
11333                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11334         if (err)
11335                 return err;
11336
11337         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11338         if (err)
11339                 goto err_out;
11340
11341         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11342         if (err)
11343                 goto err_out;
11344
11345         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11346         if (err)
11347                 goto err_out;
11348
11349         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11350         if (err)
11351                 goto err_out;
11352
11353 #ifdef CONFIG_NL80211_TESTMODE
11354         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11355         if (err)
11356                 goto err_out;
11357 #endif
11358
11359         err = netlink_register_notifier(&nl80211_netlink_notifier);
11360         if (err)
11361                 goto err_out;
11362
11363         return 0;
11364  err_out:
11365         genl_unregister_family(&nl80211_fam);
11366         return err;
11367 }
11368
11369 void nl80211_exit(void)
11370 {
11371         netlink_unregister_notifier(&nl80211_netlink_notifier);
11372         genl_unregister_family(&nl80211_fam);
11373 }