net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  * Copyright 2015-2017  Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  */
   9
  10 #include <linux/if.h>
  11 #include <linux/module.h>
  12 #include <linux/err.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15 #include <linux/if_ether.h>
  16 #include <linux/ieee80211.h>
  17 #include <linux/nl80211.h>
  18 #include <linux/rtnetlink.h>
  19 #include <linux/netlink.h>
  20 #include <linux/nospec.h>
  21 #include <linux/etherdevice.h>
  22 #include <net/net_namespace.h>
  23 #include <net/genetlink.h>
  24 #include <net/cfg80211.h>
  25 #include <net/sock.h>
  26 #include <net/inet_connection_sock.h>
  27 #include "core.h"
  28 #include "nl80211.h"
  29 #include "reg.h"
  30 #include "rdev-ops.h"
  31
  32 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  33                                    struct genl_info *info,
  34                                    struct cfg80211_crypto_settings *settings,
  35                                    int cipher_limit);
  36
  37 /* the netlink family */
  38 static struct genl_family nl80211_fam;
  39
  40 /* multicast groups */
  41 enum nl80211_multicast_groups {
  42         NL80211_MCGRP_CONFIG,
  43         NL80211_MCGRP_SCAN,
  44         NL80211_MCGRP_REGULATORY,
  45         NL80211_MCGRP_MLME,
  46         NL80211_MCGRP_VENDOR,
  47         NL80211_MCGRP_NAN,
  48         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  49 };
  50
  51 static const struct genl_multicast_group nl80211_mcgrps[] = {
  52         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  53         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  54         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  55         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  56         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  57         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  58 #ifdef CONFIG_NL80211_TESTMODE
  59         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  60 #endif
  61 };
  62
  63 /* returns ERR_PTR values */
  64 static struct wireless_dev *
  65 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  66 {
  67         struct cfg80211_registered_device *rdev;
  68         struct wireless_dev *result = NULL;
  69         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  70         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  71         u64 wdev_id;
  72         int wiphy_idx = -1;
  73         int ifidx = -1;
  74
  75         ASSERT_RTNL();
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  88                 struct wireless_dev *wdev;
  89
  90                 if (wiphy_net(&rdev->wiphy) != netns)
  91                         continue;
  92
  93                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  94                         continue;
  95
  96                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  97                         if (have_ifidx && wdev->netdev &&
  98                             wdev->netdev->ifindex == ifidx) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 103                                 result = wdev;
 104                                 break;
 105                         }
 106                 }
 107
 108                 if (result)
 109                         break;
 110         }
 111
 112         if (result)
 113                 return result;
 114         return ERR_PTR(-ENODEV);
 115 }
 116
 117 static struct cfg80211_registered_device *
 118 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 119 {
 120         struct cfg80211_registered_device *rdev = NULL, *tmp;
 121         struct net_device *netdev;
 122
 123         ASSERT_RTNL();
 124
 125         if (!attrs[NL80211_ATTR_WIPHY] &&
 126             !attrs[NL80211_ATTR_IFINDEX] &&
 127             !attrs[NL80211_ATTR_WDEV])
 128                 return ERR_PTR(-EINVAL);
 129
 130         if (attrs[NL80211_ATTR_WIPHY])
 131                 rdev = cfg80211_rdev_by_wiphy_idx(
 132                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 133
 134         if (attrs[NL80211_ATTR_WDEV]) {
 135                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 136                 struct wireless_dev *wdev;
 137                 bool found = false;
 138
 139                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 140                 if (tmp) {
 141                         /* make sure wdev exists */
 142                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 143                                 if (wdev->identifier != (u32)wdev_id)
 144                                         continue;
 145                                 found = true;
 146                                 break;
 147                         }
 148
 149                         if (!found)
 150                                 tmp = NULL;
 151
 152                         if (rdev && tmp != rdev)
 153                                 return ERR_PTR(-EINVAL);
 154                         rdev = tmp;
 155                 }
 156         }
 157
 158         if (attrs[NL80211_ATTR_IFINDEX]) {
 159                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 160
 161                 netdev = __dev_get_by_index(netns, ifindex);
 162                 if (netdev) {
 163                         if (netdev->ieee80211_ptr)
 164                                 tmp = wiphy_to_rdev(
 165                                         netdev->ieee80211_ptr->wiphy);
 166                         else
 167                                 tmp = NULL;
 168
 169                         /* not wireless device -- return error */
 170                         if (!tmp)
 171                                 return ERR_PTR(-EINVAL);
 172
 173                         /* mismatch -- return error */
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176
 177                         rdev = tmp;
 178                 }
 179         }
 180
 181         if (!rdev)
 182                 return ERR_PTR(-ENODEV);
 183
 184         if (netns != wiphy_net(&rdev->wiphy))
 185                 return ERR_PTR(-ENODEV);
 186
 187         return rdev;
 188 }
 189
 190 /*
 191  * This function returns a pointer to the driver
 192  * that the genl_info item that is passed refers to.
 193  *
 194  * The result of this can be a PTR_ERR and hence must
 195  * be checked with IS_ERR() for errors.
 196  */
 197 static struct cfg80211_registered_device *
 198 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 199 {
 200         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 201 }
 202
 203 /* policy for the attributes */
 204 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 205         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 206         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 207                                       .len = 20-1 },
 208         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 209
 210         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 211         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 212         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 213         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 214         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 215
 216         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 217         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 218         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 220         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 221         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 222
 223         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 224         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 225         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 226
 227         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 228         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 229
 230         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 231         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 232                                     .len = WLAN_MAX_KEY_LEN },
 233         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 234         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 235         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 236         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 237         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 238
 239         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 240         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 241         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 242                                        .len = IEEE80211_MAX_DATA_LEN },
 243         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 244                                        .len = IEEE80211_MAX_DATA_LEN },
 245         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 246         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 247         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 248         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 249                                                .len = NL80211_MAX_SUPP_RATES },
 250         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 251         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 252         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 253         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 254                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 255         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 256
 257         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 258         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 259
 260         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 261         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 262         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 263         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 264                                            .len = NL80211_MAX_SUPP_RATES },
 265         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 266
 267         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 268         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 269
 270         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 271
 272         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 273         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 274                               .len = IEEE80211_MAX_DATA_LEN },
 275         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 277
 278         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 279                                 .len = IEEE80211_MAX_SSID_LEN },
 280         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 281         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 282         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 283         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 284         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 285         [NL80211_ATTR_STA_FLAGS2] = {
 286                 .len = sizeof(struct nl80211_sta_flag_update),
 287         },
 288         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 293         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 294         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 295         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 296         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 297         [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
 298         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 299         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 300         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 301         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 302                                  .len = IEEE80211_MAX_DATA_LEN },
 303         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 304         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 305         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 306         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 307         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 308         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 309         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 310         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 311         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 312         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 313         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 314         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 316         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 317         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 318         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 319         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 320         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 321         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 322         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 323                                          .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 325                                          .len = IEEE80211_MAX_DATA_LEN },
 326         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 327         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 329         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 330         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 331         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 332         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 334         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 336         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 337                                       .len = IEEE80211_MAX_DATA_LEN },
 338         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 339         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 340         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 341                 .len = NL80211_HT_CAPABILITY_LEN
 342         },
 343         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 344         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 345         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 346         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 347         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 348         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 349         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 350         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 351         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 352         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 353         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
 354         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 355         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 356         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 357         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 358         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 359         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 360         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 361                 .len = NL80211_VHT_CAPABILITY_LEN,
 362         },
 363         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 364         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 365                                   .len = IEEE80211_MAX_DATA_LEN },
 366         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 367         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 368         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 369         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 370         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 371         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 372         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 373         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 374         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 375         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 376         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 377         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 378         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 380                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 381         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 382         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 383         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 384         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 385         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 387         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 388         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 389         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 390         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 391         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 392         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 394         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 395         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 396         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 397         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 398         [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 399         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 400                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 401         },
 402         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 403         [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
 404         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 405         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 406         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 407                                     .len = FILS_MAX_KEK_LEN },
 408         [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
 409         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 410         [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
 411         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 412         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 413                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 414         },
 415         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 416         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 417                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 418         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 419                                           .len = FILS_ERP_MAX_REALM_LEN },
 420         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 421         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 422                                         .len = FILS_ERP_MAX_RRK_LEN },
 423         [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
 424         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 425         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 426         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 427
 428         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 429         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 430         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 431 };
 432
 433 /* policy for the key attributes */
 434 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 435         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 436         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 437         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 438         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 439         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 440         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 441         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 442         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 443 };
 444
 445 /* policy for the key default flags */
 446 static const struct nla_policy
 447 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 448         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 449         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 450 };
 451
 452 #ifdef CONFIG_PM
 453 /* policy for WoWLAN attributes */
 454 static const struct nla_policy
 455 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 456         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 457         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 458         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 459         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 460         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 461         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 462         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 463         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 464         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 465         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 466 };
 467
 468 static const struct nla_policy
 469 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 470         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 471         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 472         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 473         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 474         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 475         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 476         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 477                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 478         },
 479         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 480                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 481         },
 482         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 483         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 484         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 485 };
 486 #endif /* CONFIG_PM */
 487
 488 /* policy for coalesce rule attributes */
 489 static const struct nla_policy
 490 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 491         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 492         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 493         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 494 };
 495
 496 /* policy for GTK rekey offload attributes */
 497 static const struct nla_policy
 498 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 499         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 500         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 501         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 502 };
 503
 504 static const struct nla_policy
 505 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 506         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 507                                                  .len = IEEE80211_MAX_SSID_LEN },
 508         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
 509         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 510 };
 511
 512 static const struct nla_policy
 513 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 514         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 515         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 516 };
 517
 518 static const struct nla_policy
 519 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 520         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 521         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 522         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 523                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 524         },
 525 };
 526
 527 /* policy for NAN function attributes */
 528 static const struct nla_policy
 529 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 530         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 531         [NL80211_NAN_FUNC_SERVICE_ID] = {
 532                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 533         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 534         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 535         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 536         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 537         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 538         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 539         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 540         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 541         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 542                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 543         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 544         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 545         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 546         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 547         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 548 };
 549
 550 /* policy for Service Response Filter attributes */
 551 static const struct nla_policy
 552 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 553         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 554         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 555                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 556         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 557         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 558 };
 559
 560 /* policy for packet pattern attributes */
 561 static const struct nla_policy
 562 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 563         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 564         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 565         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 566 };
 567
 568 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 569                                      struct netlink_callback *cb,
 570                                      struct cfg80211_registered_device **rdev,
 571                                      struct wireless_dev **wdev)
 572 {
 573         int err;
 574
 575         if (!cb->args[0]) {
 576                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 577                                   genl_family_attrbuf(&nl80211_fam),
 578                                   nl80211_fam.maxattr, nl80211_policy, NULL);
 579                 if (err)
 580                         return err;
 581
 582                 *wdev = __cfg80211_wdev_from_attrs(
 583                                         sock_net(skb->sk),
 584                                         genl_family_attrbuf(&nl80211_fam));
 585                 if (IS_ERR(*wdev))
 586                         return PTR_ERR(*wdev);
 587                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 588                 /* 0 is the first index - add 1 to parse only once */
 589                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 590                 cb->args[1] = (*wdev)->identifier;
 591         } else {
 592                 /* subtract the 1 again here */
 593                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 594                 struct wireless_dev *tmp;
 595
 596                 if (!wiphy)
 597                         return -ENODEV;
 598                 *rdev = wiphy_to_rdev(wiphy);
 599                 *wdev = NULL;
 600
 601                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 602                         if (tmp->identifier == cb->args[1]) {
 603                                 *wdev = tmp;
 604                                 break;
 605                         }
 606                 }
 607
 608                 if (!*wdev)
 609                         return -ENODEV;
 610         }
 611
 612         return 0;
 613 }
 614
 615 /* IE validation */
 616 static bool is_valid_ie_attr(const struct nlattr *attr)
 617 {
 618         const u8 *pos;
 619         int len;
 620
 621         if (!attr)
 622                 return true;
 623
 624         pos = nla_data(attr);
 625         len = nla_len(attr);
 626
 627         while (len) {
 628                 u8 elemlen;
 629
 630                 if (len < 2)
 631                         return false;
 632                 len -= 2;
 633
 634                 elemlen = pos[1];
 635                 if (elemlen > len)
 636                         return false;
 637
 638                 len -= elemlen;
 639                 pos += 2 + elemlen;
 640         }
 641
 642         return true;
 643 }
 644
 645 /* message building helper */
 646 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 647                                    int flags, u8 cmd)
 648 {
 649         /* since there is no private header just add the generic one */
 650         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 651 }
 652
 653 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 654                                      const struct ieee80211_reg_rule *rule)
 655 {
 656         int j;
 657         struct nlattr *nl_wmm_rules =
 658                 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
 659
 660         if (!nl_wmm_rules)
 661                 goto nla_put_failure;
 662
 663         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 664                 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
 665
 666                 if (!nl_wmm_rule)
 667                         goto nla_put_failure;
 668
 669                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 670                                 rule->wmm_rule->client[j].cw_min) ||
 671                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 672                                 rule->wmm_rule->client[j].cw_max) ||
 673                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 674                                rule->wmm_rule->client[j].aifsn) ||
 675                     nla_put_u8(msg, NL80211_WMMR_TXOP,
 676                                rule->wmm_rule->client[j].cot))
 677                         goto nla_put_failure;
 678
 679                 nla_nest_end(msg, nl_wmm_rule);
 680         }
 681         nla_nest_end(msg, nl_wmm_rules);
 682
 683         return 0;
 684
 685 nla_put_failure:
 686         return -ENOBUFS;
 687 }
 688
 689 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 690                                    struct ieee80211_channel *chan,
 691                                    bool large)
 692 {
 693         /* Some channels must be completely excluded from the
 694          * list to protect old user-space tools from breaking
 695          */
 696         if (!large && chan->flags &
 697             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 698                 return 0;
 699
 700         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 701                         chan->center_freq))
 702                 goto nla_put_failure;
 703
 704         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 705             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 706                 goto nla_put_failure;
 707         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 708                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 709                         goto nla_put_failure;
 710                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 711                         goto nla_put_failure;
 712         }
 713         if (chan->flags & IEEE80211_CHAN_RADAR) {
 714                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 715                         goto nla_put_failure;
 716                 if (large) {
 717                         u32 time;
 718
 719                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 720
 721                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 722                                         chan->dfs_state))
 723                                 goto nla_put_failure;
 724                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 725                                         time))
 726                                 goto nla_put_failure;
 727                         if (nla_put_u32(msg,
 728                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 729                                         chan->dfs_cac_ms))
 730                                 goto nla_put_failure;
 731                 }
 732         }
 733
 734         if (large) {
 735                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 736                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 737                         goto nla_put_failure;
 738                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 739                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 740                         goto nla_put_failure;
 741                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 742                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 743                         goto nla_put_failure;
 744                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 745                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 746                         goto nla_put_failure;
 747                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 748                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 749                         goto nla_put_failure;
 750                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 751                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 752                         goto nla_put_failure;
 753                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 754                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 755                         goto nla_put_failure;
 756                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 757                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 758                         goto nla_put_failure;
 759         }
 760
 761         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 762                         DBM_TO_MBM(chan->max_power)))
 763                 goto nla_put_failure;
 764
 765         if (large) {
 766                 const struct ieee80211_reg_rule *rule =
 767                         freq_reg_info(wiphy, chan->center_freq);
 768
 769                 if (!IS_ERR(rule) && rule->wmm_rule) {
 770                         if (nl80211_msg_put_wmm_rules(msg, rule))
 771                                 goto nla_put_failure;
 772                 }
 773         }
 774
 775         return 0;
 776
 777  nla_put_failure:
 778         return -ENOBUFS;
 779 }
 780
 781 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 782                                   struct cfg80211_txq_stats *txqstats,
 783                                   int attrtype)
 784 {
 785         struct nlattr *txqattr;
 786
 787 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 788         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 789             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 790                 return false;                                             \
 791         } while (0)
 792
 793         txqattr = nla_nest_start(msg, attrtype);
 794         if (!txqattr)
 795                 return false;
 796
 797         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 798         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 799         PUT_TXQVAL_U32(FLOWS, flows);
 800         PUT_TXQVAL_U32(DROPS, drops);
 801         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 802         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 803         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 804         PUT_TXQVAL_U32(COLLISIONS, collisions);
 805         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 806         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 807         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 808         nla_nest_end(msg, txqattr);
 809
 810 #undef PUT_TXQVAL_U32
 811         return true;
 812 }
 813
 814 /* netlink command implementations */
 815
 816 struct key_parse {
 817         struct key_params p;
 818         int idx;
 819         int type;
 820         bool def, defmgmt;
 821         bool def_uni, def_multi;
 822 };
 823
 824 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 825                                  struct key_parse *k)
 826 {
 827         struct nlattr *tb[NL80211_KEY_MAX + 1];
 828         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 829                                    nl80211_key_policy, info->extack);
 830         if (err)
 831                 return err;
 832
 833         k->def = !!tb[NL80211_KEY_DEFAULT];
 834         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 835
 836         if (k->def) {
 837                 k->def_uni = true;
 838                 k->def_multi = true;
 839         }
 840         if (k->defmgmt)
 841                 k->def_multi = true;
 842
 843         if (tb[NL80211_KEY_IDX])
 844                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 845
 846         if (tb[NL80211_KEY_DATA]) {
 847                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 848                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 849         }
 850
 851         if (tb[NL80211_KEY_SEQ]) {
 852                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 853                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 854         }
 855
 856         if (tb[NL80211_KEY_CIPHER])
 857                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 858
 859         if (tb[NL80211_KEY_TYPE]) {
 860                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 861                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 862                         return genl_err_attr(info, -EINVAL,
 863                                              tb[NL80211_KEY_TYPE]);
 864         }
 865
 866         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 867                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 868
 869                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 870                                        tb[NL80211_KEY_DEFAULT_TYPES],
 871                                        nl80211_key_default_policy,
 872                                        info->extack);
 873                 if (err)
 874                         return err;
 875
 876                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 877                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 878         }
 879
 880         return 0;
 881 }
 882
 883 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 884 {
 885         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 886                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 887                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 888         }
 889
 890         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 891                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 892                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 893         }
 894
 895         if (info->attrs[NL80211_ATTR_KEY_IDX])
 896                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 897
 898         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 899                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 900
 901         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 902         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 903
 904         if (k->def) {
 905                 k->def_uni = true;
 906                 k->def_multi = true;
 907         }
 908         if (k->defmgmt)
 909                 k->def_multi = true;
 910
 911         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 912                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 913                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) {
 914                         GENL_SET_ERR_MSG(info, "key type out of range");
 915                         return -EINVAL;
 916                 }
 917         }
 918
 919         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 920                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 921                 int err = nla_parse_nested(kdt,
 922                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 923                                            info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 924                                            nl80211_key_default_policy,
 925                                            info->extack);
 926                 if (err)
 927                         return err;
 928
 929                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 930                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 931         }
 932
 933         return 0;
 934 }
 935
 936 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 937 {
 938         int err;
 939
 940         memset(k, 0, sizeof(*k));
 941         k->idx = -1;
 942         k->type = -1;
 943
 944         if (info->attrs[NL80211_ATTR_KEY])
 945                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
 946         else
 947                 err = nl80211_parse_key_old(info, k);
 948
 949         if (err)
 950                 return err;
 951
 952         if (k->def && k->defmgmt) {
 953                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
 954                 return -EINVAL;
 955         }
 956
 957         if (k->defmgmt) {
 958                 if (k->def_uni || !k->def_multi) {
 959                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
 960                         return -EINVAL;
 961                 }
 962         }
 963
 964         if (k->idx != -1) {
 965                 if (k->defmgmt) {
 966                         if (k->idx < 4 || k->idx > 5) {
 967                                 GENL_SET_ERR_MSG(info,
 968                                                  "defmgmt key idx not 4 or 5");
 969                                 return -EINVAL;
 970                         }
 971                 } else if (k->def) {
 972                         if (k->idx < 0 || k->idx > 3) {
 973                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
 974                                 return -EINVAL;
 975                         }
 976                 } else {
 977                         if (k->idx < 0 || k->idx > 5) {
 978                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
 979                                 return -EINVAL;
 980                         }
 981                 }
 982         }
 983
 984         return 0;
 985 }
 986
 987 static struct cfg80211_cached_keys *
 988 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 989                        struct genl_info *info, bool *no_ht)
 990 {
 991         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
 992         struct key_parse parse;
 993         struct nlattr *key;
 994         struct cfg80211_cached_keys *result;
 995         int rem, err, def = 0;
 996         bool have_key = false;
 997
 998         nla_for_each_nested(key, keys, rem) {
 999                 have_key = true;
1000                 break;
1001         }
1002
1003         if (!have_key)
1004                 return NULL;
1005
1006         result = kzalloc(sizeof(*result), GFP_KERNEL);
1007         if (!result)
1008                 return ERR_PTR(-ENOMEM);
1009
1010         result->def = -1;
1011
1012         nla_for_each_nested(key, keys, rem) {
1013                 memset(&parse, 0, sizeof(parse));
1014                 parse.idx = -1;
1015
1016                 err = nl80211_parse_key_new(info, key, &parse);
1017                 if (err)
1018                         goto error;
1019                 err = -EINVAL;
1020                 if (!parse.p.key)
1021                         goto error;
1022                 if (parse.idx < 0 || parse.idx > 3) {
1023                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1024                         goto error;
1025                 }
1026                 if (parse.def) {
1027                         if (def) {
1028                                 GENL_SET_ERR_MSG(info,
1029                                                  "only one key can be default");
1030                                 goto error;
1031                         }
1032                         def = 1;
1033                         result->def = parse.idx;
1034                         if (!parse.def_uni || !parse.def_multi)
1035                                 goto error;
1036                 } else if (parse.defmgmt)
1037                         goto error;
1038                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1039                                                      parse.idx, false, NULL);
1040                 if (err)
1041                         goto error;
1042                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1043                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1044                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1045                         err = -EINVAL;
1046                         goto error;
1047                 }
1048                 result->params[parse.idx].cipher = parse.p.cipher;
1049                 result->params[parse.idx].key_len = parse.p.key_len;
1050                 result->params[parse.idx].key = result->data[parse.idx];
1051                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1052
1053                 /* must be WEP key if we got here */
1054                 if (no_ht)
1055                         *no_ht = true;
1056         }
1057
1058         if (result->def < 0) {
1059                 err = -EINVAL;
1060                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1061                 goto error;
1062         }
1063
1064         return result;
1065  error:
1066         kfree(result);
1067         return ERR_PTR(err);
1068 }
1069
1070 static int nl80211_key_allowed(struct wireless_dev *wdev)
1071 {
1072         ASSERT_WDEV_LOCK(wdev);
1073
1074         switch (wdev->iftype) {
1075         case NL80211_IFTYPE_AP:
1076         case NL80211_IFTYPE_AP_VLAN:
1077         case NL80211_IFTYPE_P2P_GO:
1078         case NL80211_IFTYPE_MESH_POINT:
1079                 break;
1080         case NL80211_IFTYPE_ADHOC:
1081         case NL80211_IFTYPE_STATION:
1082         case NL80211_IFTYPE_P2P_CLIENT:
1083                 if (!wdev->current_bss)
1084                         return -ENOLINK;
1085                 break;
1086         case NL80211_IFTYPE_UNSPECIFIED:
1087         case NL80211_IFTYPE_OCB:
1088         case NL80211_IFTYPE_MONITOR:
1089         case NL80211_IFTYPE_NAN:
1090         case NL80211_IFTYPE_P2P_DEVICE:
1091         case NL80211_IFTYPE_WDS:
1092         case NUM_NL80211_IFTYPES:
1093                 return -EINVAL;
1094         }
1095
1096         return 0;
1097 }
1098
1099 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1100                                                         struct nlattr *tb)
1101 {
1102         struct ieee80211_channel *chan;
1103
1104         if (tb == NULL)
1105                 return NULL;
1106         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1107         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1108                 return NULL;
1109         return chan;
1110 }
1111
1112 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1113 {
1114         struct nlattr *nl_modes = nla_nest_start(msg, attr);
1115         int i;
1116
1117         if (!nl_modes)
1118                 goto nla_put_failure;
1119
1120         i = 0;
1121         while (ifmodes) {
1122                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1123                         goto nla_put_failure;
1124                 ifmodes >>= 1;
1125                 i++;
1126         }
1127
1128         nla_nest_end(msg, nl_modes);
1129         return 0;
1130
1131 nla_put_failure:
1132         return -ENOBUFS;
1133 }
1134
1135 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1136                                           struct sk_buff *msg,
1137                                           bool large)
1138 {
1139         struct nlattr *nl_combis;
1140         int i, j;
1141
1142         nl_combis = nla_nest_start(msg,
1143                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1144         if (!nl_combis)
1145                 goto nla_put_failure;
1146
1147         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1148                 const struct ieee80211_iface_combination *c;
1149                 struct nlattr *nl_combi, *nl_limits;
1150
1151                 c = &wiphy->iface_combinations[i];
1152
1153                 nl_combi = nla_nest_start(msg, i + 1);
1154                 if (!nl_combi)
1155                         goto nla_put_failure;
1156
1157                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1158                 if (!nl_limits)
1159                         goto nla_put_failure;
1160
1161                 for (j = 0; j < c->n_limits; j++) {
1162                         struct nlattr *nl_limit;
1163
1164                         nl_limit = nla_nest_start(msg, j + 1);
1165                         if (!nl_limit)
1166                                 goto nla_put_failure;
1167                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1168                                         c->limits[j].max))
1169                                 goto nla_put_failure;
1170                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1171                                                 c->limits[j].types))
1172                                 goto nla_put_failure;
1173                         nla_nest_end(msg, nl_limit);
1174                 }
1175
1176                 nla_nest_end(msg, nl_limits);
1177
1178                 if (c->beacon_int_infra_match &&
1179                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1180                         goto nla_put_failure;
1181                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1182                                 c->num_different_channels) ||
1183                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1184                                 c->max_interfaces))
1185                         goto nla_put_failure;
1186                 if (large &&
1187                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1188                                 c->radar_detect_widths) ||
1189                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1190                                 c->radar_detect_regions)))
1191                         goto nla_put_failure;
1192                 if (c->beacon_int_min_gcd &&
1193                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1194                                 c->beacon_int_min_gcd))
1195                         goto nla_put_failure;
1196
1197                 nla_nest_end(msg, nl_combi);
1198         }
1199
1200         nla_nest_end(msg, nl_combis);
1201
1202         return 0;
1203 nla_put_failure:
1204         return -ENOBUFS;
1205 }
1206
1207 #ifdef CONFIG_PM
1208 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1209                                         struct sk_buff *msg)
1210 {
1211         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1212         struct nlattr *nl_tcp;
1213
1214         if (!tcp)
1215                 return 0;
1216
1217         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1218         if (!nl_tcp)
1219                 return -ENOBUFS;
1220
1221         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1222                         tcp->data_payload_max))
1223                 return -ENOBUFS;
1224
1225         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1226                         tcp->data_payload_max))
1227                 return -ENOBUFS;
1228
1229         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1230                 return -ENOBUFS;
1231
1232         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1233                                 sizeof(*tcp->tok), tcp->tok))
1234                 return -ENOBUFS;
1235
1236         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1237                         tcp->data_interval_max))
1238                 return -ENOBUFS;
1239
1240         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1241                         tcp->wake_payload_max))
1242                 return -ENOBUFS;
1243
1244         nla_nest_end(msg, nl_tcp);
1245         return 0;
1246 }
1247
1248 static int nl80211_send_wowlan(struct sk_buff *msg,
1249                                struct cfg80211_registered_device *rdev,
1250                                bool large)
1251 {
1252         struct nlattr *nl_wowlan;
1253
1254         if (!rdev->wiphy.wowlan)
1255                 return 0;
1256
1257         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1258         if (!nl_wowlan)
1259                 return -ENOBUFS;
1260
1261         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1262              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1263             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1264              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1265             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1266              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1267             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1268              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1269             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1270              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1271             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1272              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1273             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1274              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1275             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1276              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1277                 return -ENOBUFS;
1278
1279         if (rdev->wiphy.wowlan->n_patterns) {
1280                 struct nl80211_pattern_support pat = {
1281                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1282                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1283                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1284                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1285                 };
1286
1287                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1288                             sizeof(pat), &pat))
1289                         return -ENOBUFS;
1290         }
1291
1292         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1293             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1294                         rdev->wiphy.wowlan->max_nd_match_sets))
1295                 return -ENOBUFS;
1296
1297         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1298                 return -ENOBUFS;
1299
1300         nla_nest_end(msg, nl_wowlan);
1301
1302         return 0;
1303 }
1304 #endif
1305
1306 static int nl80211_send_coalesce(struct sk_buff *msg,
1307                                  struct cfg80211_registered_device *rdev)
1308 {
1309         struct nl80211_coalesce_rule_support rule;
1310
1311         if (!rdev->wiphy.coalesce)
1312                 return 0;
1313
1314         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1315         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1316         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1317         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1318         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1319         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1320
1321         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1322                 return -ENOBUFS;
1323
1324         return 0;
1325 }
1326
1327 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1328                                       struct ieee80211_supported_band *sband)
1329 {
1330         struct nlattr *nl_rates, *nl_rate;
1331         struct ieee80211_rate *rate;
1332         int i;
1333
1334         /* add HT info */
1335         if (sband->ht_cap.ht_supported &&
1336             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1337                      sizeof(sband->ht_cap.mcs),
1338                      &sband->ht_cap.mcs) ||
1339              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1340                          sband->ht_cap.cap) ||
1341              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1342                         sband->ht_cap.ampdu_factor) ||
1343              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1344                         sband->ht_cap.ampdu_density)))
1345                 return -ENOBUFS;
1346
1347         /* add VHT info */
1348         if (sband->vht_cap.vht_supported &&
1349             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1350                      sizeof(sband->vht_cap.vht_mcs),
1351                      &sband->vht_cap.vht_mcs) ||
1352              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1353                          sband->vht_cap.cap)))
1354                 return -ENOBUFS;
1355
1356         /* add bitrates */
1357         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1358         if (!nl_rates)
1359                 return -ENOBUFS;
1360
1361         for (i = 0; i < sband->n_bitrates; i++) {
1362                 nl_rate = nla_nest_start(msg, i);
1363                 if (!nl_rate)
1364                         return -ENOBUFS;
1365
1366                 rate = &sband->bitrates[i];
1367                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1368                                 rate->bitrate))
1369                         return -ENOBUFS;
1370                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1371                     nla_put_flag(msg,
1372                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1373                         return -ENOBUFS;
1374
1375                 nla_nest_end(msg, nl_rate);
1376         }
1377
1378         nla_nest_end(msg, nl_rates);
1379
1380         return 0;
1381 }
1382
1383 static int
1384 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1385                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1386 {
1387         u16 stypes;
1388         struct nlattr *nl_ftypes, *nl_ifs;
1389         enum nl80211_iftype ift;
1390         int i;
1391
1392         if (!mgmt_stypes)
1393                 return 0;
1394
1395         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1396         if (!nl_ifs)
1397                 return -ENOBUFS;
1398
1399         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1400                 nl_ftypes = nla_nest_start(msg, ift);
1401                 if (!nl_ftypes)
1402                         return -ENOBUFS;
1403                 i = 0;
1404                 stypes = mgmt_stypes[ift].tx;
1405                 while (stypes) {
1406                         if ((stypes & 1) &&
1407                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1408                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1409                                 return -ENOBUFS;
1410                         stypes >>= 1;
1411                         i++;
1412                 }
1413                 nla_nest_end(msg, nl_ftypes);
1414         }
1415
1416         nla_nest_end(msg, nl_ifs);
1417
1418         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1419         if (!nl_ifs)
1420                 return -ENOBUFS;
1421
1422         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1423                 nl_ftypes = nla_nest_start(msg, ift);
1424                 if (!nl_ftypes)
1425                         return -ENOBUFS;
1426                 i = 0;
1427                 stypes = mgmt_stypes[ift].rx;
1428                 while (stypes) {
1429                         if ((stypes & 1) &&
1430                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1431                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1432                                 return -ENOBUFS;
1433                         stypes >>= 1;
1434                         i++;
1435                 }
1436                 nla_nest_end(msg, nl_ftypes);
1437         }
1438         nla_nest_end(msg, nl_ifs);
1439
1440         return 0;
1441 }
1442
1443 #define CMD(op, n)                                                      \
1444          do {                                                           \
1445                 if (rdev->ops->op) {                                    \
1446                         i++;                                            \
1447                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1448                                 goto nla_put_failure;                   \
1449                 }                                                       \
1450         } while (0)
1451
1452 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1453                                         struct sk_buff *msg)
1454 {
1455         int i = 0;
1456
1457         /*
1458          * do *NOT* add anything into this function, new things need to be
1459          * advertised only to new versions of userspace that can deal with
1460          * the split (and they can't possibly care about new features...
1461          */
1462         CMD(add_virtual_intf, NEW_INTERFACE);
1463         CMD(change_virtual_intf, SET_INTERFACE);
1464         CMD(add_key, NEW_KEY);
1465         CMD(start_ap, START_AP);
1466         CMD(add_station, NEW_STATION);
1467         CMD(add_mpath, NEW_MPATH);
1468         CMD(update_mesh_config, SET_MESH_CONFIG);
1469         CMD(change_bss, SET_BSS);
1470         CMD(auth, AUTHENTICATE);
1471         CMD(assoc, ASSOCIATE);
1472         CMD(deauth, DEAUTHENTICATE);
1473         CMD(disassoc, DISASSOCIATE);
1474         CMD(join_ibss, JOIN_IBSS);
1475         CMD(join_mesh, JOIN_MESH);
1476         CMD(set_pmksa, SET_PMKSA);
1477         CMD(del_pmksa, DEL_PMKSA);
1478         CMD(flush_pmksa, FLUSH_PMKSA);
1479         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1480                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1481         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1482         CMD(mgmt_tx, FRAME);
1483         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1484         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1485                 i++;
1486                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1487                         goto nla_put_failure;
1488         }
1489         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1490             rdev->ops->join_mesh) {
1491                 i++;
1492                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1493                         goto nla_put_failure;
1494         }
1495         CMD(set_wds_peer, SET_WDS_PEER);
1496         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1497                 CMD(tdls_mgmt, TDLS_MGMT);
1498                 CMD(tdls_oper, TDLS_OPER);
1499         }
1500         if (rdev->wiphy.max_sched_scan_reqs)
1501                 CMD(sched_scan_start, START_SCHED_SCAN);
1502         CMD(probe_client, PROBE_CLIENT);
1503         CMD(set_noack_map, SET_NOACK_MAP);
1504         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1505                 i++;
1506                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1507                         goto nla_put_failure;
1508         }
1509         CMD(start_p2p_device, START_P2P_DEVICE);
1510         CMD(set_mcast_rate, SET_MCAST_RATE);
1511 #ifdef CONFIG_NL80211_TESTMODE
1512         CMD(testmode_cmd, TESTMODE);
1513 #endif
1514
1515         if (rdev->ops->connect || rdev->ops->auth) {
1516                 i++;
1517                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1518                         goto nla_put_failure;
1519         }
1520
1521         if (rdev->ops->disconnect || rdev->ops->deauth) {
1522                 i++;
1523                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1524                         goto nla_put_failure;
1525         }
1526
1527         return i;
1528  nla_put_failure:
1529         return -ENOBUFS;
1530 }
1531
1532 struct nl80211_dump_wiphy_state {
1533         s64 filter_wiphy;
1534         long start;
1535         long split_start, band_start, chan_start, capa_start;
1536         bool split;
1537 };
1538
1539 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1540                               enum nl80211_commands cmd,
1541                               struct sk_buff *msg, u32 portid, u32 seq,
1542                               int flags, struct nl80211_dump_wiphy_state *state)
1543 {
1544         void *hdr;
1545         struct nlattr *nl_bands, *nl_band;
1546         struct nlattr *nl_freqs, *nl_freq;
1547         struct nlattr *nl_cmds;
1548         enum nl80211_band band;
1549         struct ieee80211_channel *chan;
1550         int i;
1551         const struct ieee80211_txrx_stypes *mgmt_stypes =
1552                                 rdev->wiphy.mgmt_stypes;
1553         u32 features;
1554
1555         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1556         if (!hdr)
1557                 return -ENOBUFS;
1558
1559         if (WARN_ON(!state))
1560                 return -EINVAL;
1561
1562         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1563             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1564                            wiphy_name(&rdev->wiphy)) ||
1565             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1566                         cfg80211_rdev_list_generation))
1567                 goto nla_put_failure;
1568
1569         if (cmd != NL80211_CMD_NEW_WIPHY)
1570                 goto finish;
1571
1572         switch (state->split_start) {
1573         case 0:
1574                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1575                                rdev->wiphy.retry_short) ||
1576                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1577                                rdev->wiphy.retry_long) ||
1578                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1579                                 rdev->wiphy.frag_threshold) ||
1580                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1581                                 rdev->wiphy.rts_threshold) ||
1582                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1583                                rdev->wiphy.coverage_class) ||
1584                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1585                                rdev->wiphy.max_scan_ssids) ||
1586                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1587                                rdev->wiphy.max_sched_scan_ssids) ||
1588                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1589                                 rdev->wiphy.max_scan_ie_len) ||
1590                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1591                                 rdev->wiphy.max_sched_scan_ie_len) ||
1592                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1593                                rdev->wiphy.max_match_sets) ||
1594                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1595                                 rdev->wiphy.max_sched_scan_plans) ||
1596                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1597                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1598                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1599                                 rdev->wiphy.max_sched_scan_plan_iterations))
1600                         goto nla_put_failure;
1601
1602                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1603                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1604                         goto nla_put_failure;
1605                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1606                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1607                         goto nla_put_failure;
1608                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1609                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1610                         goto nla_put_failure;
1611                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1612                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1613                         goto nla_put_failure;
1614                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1615                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1616                         goto nla_put_failure;
1617                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1618                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1619                         goto nla_put_failure;
1620                 state->split_start++;
1621                 if (state->split)
1622                         break;
1623         case 1:
1624                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1625                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1626                             rdev->wiphy.cipher_suites))
1627                         goto nla_put_failure;
1628
1629                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1630                                rdev->wiphy.max_num_pmkids))
1631                         goto nla_put_failure;
1632
1633                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1634                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1635                         goto nla_put_failure;
1636
1637                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1638                                 rdev->wiphy.available_antennas_tx) ||
1639                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1640                                 rdev->wiphy.available_antennas_rx))
1641                         goto nla_put_failure;
1642
1643                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1644                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1645                                 rdev->wiphy.probe_resp_offload))
1646                         goto nla_put_failure;
1647
1648                 if ((rdev->wiphy.available_antennas_tx ||
1649                      rdev->wiphy.available_antennas_rx) &&
1650                     rdev->ops->get_antenna) {
1651                         u32 tx_ant = 0, rx_ant = 0;
1652                         int res;
1653
1654                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1655                         if (!res) {
1656                                 if (nla_put_u32(msg,
1657                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1658                                                 tx_ant) ||
1659                                     nla_put_u32(msg,
1660                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1661                                                 rx_ant))
1662                                         goto nla_put_failure;
1663                         }
1664                 }
1665
1666                 state->split_start++;
1667                 if (state->split)
1668                         break;
1669         case 2:
1670                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1671                                         rdev->wiphy.interface_modes))
1672                                 goto nla_put_failure;
1673                 state->split_start++;
1674                 if (state->split)
1675                         break;
1676         case 3:
1677                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1678                 if (!nl_bands)
1679                         goto nla_put_failure;
1680
1681                 for (band = state->band_start;
1682                      band < NUM_NL80211_BANDS; band++) {
1683                         struct ieee80211_supported_band *sband;
1684
1685                         sband = rdev->wiphy.bands[band];
1686
1687                         if (!sband)
1688                                 continue;
1689
1690                         nl_band = nla_nest_start(msg, band);
1691                         if (!nl_band)
1692                                 goto nla_put_failure;
1693
1694                         switch (state->chan_start) {
1695                         case 0:
1696                                 if (nl80211_send_band_rateinfo(msg, sband))
1697                                         goto nla_put_failure;
1698                                 state->chan_start++;
1699                                 if (state->split)
1700                                         break;
1701                         default:
1702                                 /* add frequencies */
1703                                 nl_freqs = nla_nest_start(
1704                                         msg, NL80211_BAND_ATTR_FREQS);
1705                                 if (!nl_freqs)
1706                                         goto nla_put_failure;
1707
1708                                 for (i = state->chan_start - 1;
1709                                      i < sband->n_channels;
1710                                      i++) {
1711                                         nl_freq = nla_nest_start(msg, i);
1712                                         if (!nl_freq)
1713                                                 goto nla_put_failure;
1714
1715                                         chan = &sband->channels[i];
1716
1717                                         if (nl80211_msg_put_channel(
1718                                                         msg, &rdev->wiphy, chan,
1719                                                         state->split))
1720                                                 goto nla_put_failure;
1721
1722                                         nla_nest_end(msg, nl_freq);
1723                                         if (state->split)
1724                                                 break;
1725                                 }
1726                                 if (i < sband->n_channels)
1727                                         state->chan_start = i + 2;
1728                                 else
1729                                         state->chan_start = 0;
1730                                 nla_nest_end(msg, nl_freqs);
1731                         }
1732
1733                         nla_nest_end(msg, nl_band);
1734
1735                         if (state->split) {
1736                                 /* start again here */
1737                                 if (state->chan_start)
1738                                         band--;
1739                                 break;
1740                         }
1741                 }
1742                 nla_nest_end(msg, nl_bands);
1743
1744                 if (band < NUM_NL80211_BANDS)
1745                         state->band_start = band + 1;
1746                 else
1747                         state->band_start = 0;
1748
1749                 /* if bands & channels are done, continue outside */
1750                 if (state->band_start == 0 && state->chan_start == 0)
1751                         state->split_start++;
1752                 if (state->split)
1753                         break;
1754         case 4:
1755                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1756                 if (!nl_cmds)
1757                         goto nla_put_failure;
1758
1759                 i = nl80211_add_commands_unsplit(rdev, msg);
1760                 if (i < 0)
1761                         goto nla_put_failure;
1762                 if (state->split) {
1763                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1764                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1765                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1766                                 CMD(channel_switch, CHANNEL_SWITCH);
1767                         CMD(set_qos_map, SET_QOS_MAP);
1768                         if (rdev->wiphy.features &
1769                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1770                                 CMD(add_tx_ts, ADD_TX_TS);
1771                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1772                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1773                 }
1774 #undef CMD
1775
1776                 nla_nest_end(msg, nl_cmds);
1777                 state->split_start++;
1778                 if (state->split)
1779                         break;
1780         case 5:
1781                 if (rdev->ops->remain_on_channel &&
1782                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1783                     nla_put_u32(msg,
1784                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1785                                 rdev->wiphy.max_remain_on_channel_duration))
1786                         goto nla_put_failure;
1787
1788                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1789                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1790                         goto nla_put_failure;
1791
1792                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1793                         goto nla_put_failure;
1794                 state->split_start++;
1795                 if (state->split)
1796                         break;
1797         case 6:
1798 #ifdef CONFIG_PM
1799                 if (nl80211_send_wowlan(msg, rdev, state->split))
1800                         goto nla_put_failure;
1801                 state->split_start++;
1802                 if (state->split)
1803                         break;
1804 #else
1805                 state->split_start++;
1806 #endif
1807         case 7:
1808                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1809                                         rdev->wiphy.software_iftypes))
1810                         goto nla_put_failure;
1811
1812                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1813                                                    state->split))
1814                         goto nla_put_failure;
1815
1816                 state->split_start++;
1817                 if (state->split)
1818                         break;
1819         case 8:
1820                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1821                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1822                                 rdev->wiphy.ap_sme_capa))
1823                         goto nla_put_failure;
1824
1825                 features = rdev->wiphy.features;
1826                 /*
1827                  * We can only add the per-channel limit information if the
1828                  * dump is split, otherwise it makes it too big. Therefore
1829                  * only advertise it in that case.
1830                  */
1831                 if (state->split)
1832                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1833                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1834                         goto nla_put_failure;
1835
1836                 if (rdev->wiphy.ht_capa_mod_mask &&
1837                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1838                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1839                             rdev->wiphy.ht_capa_mod_mask))
1840                         goto nla_put_failure;
1841
1842                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1843                     rdev->wiphy.max_acl_mac_addrs &&
1844                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1845                                 rdev->wiphy.max_acl_mac_addrs))
1846                         goto nla_put_failure;
1847
1848                 /*
1849                  * Any information below this point is only available to
1850                  * applications that can deal with it being split. This
1851                  * helps ensure that newly added capabilities don't break
1852                  * older tools by overrunning their buffers.
1853                  *
1854                  * We still increment split_start so that in the split
1855                  * case we'll continue with more data in the next round,
1856                  * but break unconditionally so unsplit data stops here.
1857                  */
1858                 state->split_start++;
1859                 break;
1860         case 9:
1861                 if (rdev->wiphy.extended_capabilities &&
1862                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1863                              rdev->wiphy.extended_capabilities_len,
1864                              rdev->wiphy.extended_capabilities) ||
1865                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1866                              rdev->wiphy.extended_capabilities_len,
1867                              rdev->wiphy.extended_capabilities_mask)))
1868                         goto nla_put_failure;
1869
1870                 if (rdev->wiphy.vht_capa_mod_mask &&
1871                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1872                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1873                             rdev->wiphy.vht_capa_mod_mask))
1874                         goto nla_put_failure;
1875
1876                 state->split_start++;
1877                 break;
1878         case 10:
1879                 if (nl80211_send_coalesce(msg, rdev))
1880                         goto nla_put_failure;
1881
1882                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1883                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1884                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1885                         goto nla_put_failure;
1886
1887                 if (rdev->wiphy.max_ap_assoc_sta &&
1888                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1889                                 rdev->wiphy.max_ap_assoc_sta))
1890                         goto nla_put_failure;
1891
1892                 state->split_start++;
1893                 break;
1894         case 11:
1895                 if (rdev->wiphy.n_vendor_commands) {
1896                         const struct nl80211_vendor_cmd_info *info;
1897                         struct nlattr *nested;
1898
1899                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1900                         if (!nested)
1901                                 goto nla_put_failure;
1902
1903                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1904                                 info = &rdev->wiphy.vendor_commands[i].info;
1905                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1906                                         goto nla_put_failure;
1907                         }
1908                         nla_nest_end(msg, nested);
1909                 }
1910
1911                 if (rdev->wiphy.n_vendor_events) {
1912                         const struct nl80211_vendor_cmd_info *info;
1913                         struct nlattr *nested;
1914
1915                         nested = nla_nest_start(msg,
1916                                                 NL80211_ATTR_VENDOR_EVENTS);
1917                         if (!nested)
1918                                 goto nla_put_failure;
1919
1920                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1921                                 info = &rdev->wiphy.vendor_events[i];
1922                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1923                                         goto nla_put_failure;
1924                         }
1925                         nla_nest_end(msg, nested);
1926                 }
1927                 state->split_start++;
1928                 break;
1929         case 12:
1930                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1931                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1932                                rdev->wiphy.max_num_csa_counters))
1933                         goto nla_put_failure;
1934
1935                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1936                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1937                         goto nla_put_failure;
1938
1939                 if (rdev->wiphy.max_sched_scan_reqs &&
1940                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1941                                 rdev->wiphy.max_sched_scan_reqs))
1942                         goto nla_put_failure;
1943
1944                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1945                             sizeof(rdev->wiphy.ext_features),
1946                             rdev->wiphy.ext_features))
1947                         goto nla_put_failure;
1948
1949                 if (rdev->wiphy.bss_select_support) {
1950                         struct nlattr *nested;
1951                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1952
1953                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1954                         if (!nested)
1955                                 goto nla_put_failure;
1956
1957                         i = 0;
1958                         while (bss_select_support) {
1959                                 if ((bss_select_support & 1) &&
1960                                     nla_put_flag(msg, i))
1961                                         goto nla_put_failure;
1962                                 i++;
1963                                 bss_select_support >>= 1;
1964                         }
1965                         nla_nest_end(msg, nested);
1966                 }
1967
1968                 state->split_start++;
1969                 break;
1970         case 13:
1971                 if (rdev->wiphy.num_iftype_ext_capab &&
1972                     rdev->wiphy.iftype_ext_capab) {
1973                         struct nlattr *nested_ext_capab, *nested;
1974
1975                         nested = nla_nest_start(msg,
1976                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1977                         if (!nested)
1978                                 goto nla_put_failure;
1979
1980                         for (i = state->capa_start;
1981                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1982                                 const struct wiphy_iftype_ext_capab *capab;
1983
1984                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1985
1986                                 nested_ext_capab = nla_nest_start(msg, i);
1987                                 if (!nested_ext_capab ||
1988                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1989                                                 capab->iftype) ||
1990                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1991                                             capab->extended_capabilities_len,
1992                                             capab->extended_capabilities) ||
1993                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1994                                             capab->extended_capabilities_len,
1995                                             capab->extended_capabilities_mask))
1996                                         goto nla_put_failure;
1997
1998                                 nla_nest_end(msg, nested_ext_capab);
1999                                 if (state->split)
2000                                         break;
2001                         }
2002                         nla_nest_end(msg, nested);
2003                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2004                                 state->capa_start = i + 1;
2005                                 break;
2006                         }
2007                 }
2008
2009                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2010                                 rdev->wiphy.nan_supported_bands))
2011                         goto nla_put_failure;
2012
2013                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2014                                             NL80211_EXT_FEATURE_TXQS)) {
2015                         struct cfg80211_txq_stats txqstats = {};
2016                         int res;
2017
2018                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2019                         if (!res &&
2020                             !nl80211_put_txq_stats(msg, &txqstats,
2021                                                    NL80211_ATTR_TXQ_STATS))
2022                                 goto nla_put_failure;
2023
2024                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2025                                         rdev->wiphy.txq_limit))
2026                                 goto nla_put_failure;
2027                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2028                                         rdev->wiphy.txq_memory_limit))
2029                                 goto nla_put_failure;
2030                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2031                                         rdev->wiphy.txq_quantum))
2032                                 goto nla_put_failure;
2033                 }
2034
2035                 /* done */
2036                 state->split_start = 0;
2037                 break;
2038         }
2039  finish:
2040         genlmsg_end(msg, hdr);
2041         return 0;
2042
2043  nla_put_failure:
2044         genlmsg_cancel(msg, hdr);
2045         return -EMSGSIZE;
2046 }
2047
2048 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2049                                     struct netlink_callback *cb,
2050                                     struct nl80211_dump_wiphy_state *state)
2051 {
2052         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2053         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2054                               nl80211_fam.maxattr, nl80211_policy, NULL);
2055         /* ignore parse errors for backward compatibility */
2056         if (ret)
2057                 return 0;
2058
2059         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2060         if (tb[NL80211_ATTR_WIPHY])
2061                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2062         if (tb[NL80211_ATTR_WDEV])
2063                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2064         if (tb[NL80211_ATTR_IFINDEX]) {
2065                 struct net_device *netdev;
2066                 struct cfg80211_registered_device *rdev;
2067                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2068
2069                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2070                 if (!netdev)
2071                         return -ENODEV;
2072                 if (netdev->ieee80211_ptr) {
2073                         rdev = wiphy_to_rdev(
2074                                 netdev->ieee80211_ptr->wiphy);
2075                         state->filter_wiphy = rdev->wiphy_idx;
2076                 }
2077         }
2078
2079         return 0;
2080 }
2081
2082 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2083 {
2084         int idx = 0, ret;
2085         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2086         struct cfg80211_registered_device *rdev;
2087
2088         rtnl_lock();
2089         if (!state) {
2090                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2091                 if (!state) {
2092                         rtnl_unlock();
2093                         return -ENOMEM;
2094                 }
2095                 state->filter_wiphy = -1;
2096                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2097                 if (ret) {
2098                         kfree(state);
2099                         rtnl_unlock();
2100                         return ret;
2101                 }
2102                 cb->args[0] = (long)state;
2103         }
2104
2105         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2106                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2107                         continue;
2108                 if (++idx <= state->start)
2109                         continue;
2110                 if (state->filter_wiphy != -1 &&
2111                     state->filter_wiphy != rdev->wiphy_idx)
2112                         continue;
2113                 /* attempt to fit multiple wiphy data chunks into the skb */
2114                 do {
2115                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2116                                                  skb,
2117                                                  NETLINK_CB(cb->skb).portid,
2118                                                  cb->nlh->nlmsg_seq,
2119                                                  NLM_F_MULTI, state);
2120                         if (ret < 0) {
2121                                 /*
2122                                  * If sending the wiphy data didn't fit (ENOBUFS
2123                                  * or EMSGSIZE returned), this SKB is still
2124                                  * empty (so it's not too big because another
2125                                  * wiphy dataset is already in the skb) and
2126                                  * we've not tried to adjust the dump allocation
2127                                  * yet ... then adjust the alloc size to be
2128                                  * bigger, and return 1 but with the empty skb.
2129                                  * This results in an empty message being RX'ed
2130                                  * in userspace, but that is ignored.
2131                                  *
2132                                  * We can then retry with the larger buffer.
2133                                  */
2134                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2135                                     !skb->len && !state->split &&
2136                                     cb->min_dump_alloc < 4096) {
2137                                         cb->min_dump_alloc = 4096;
2138                                         state->split_start = 0;
2139                                         rtnl_unlock();
2140                                         return 1;
2141                                 }
2142                                 idx--;
2143                                 break;
2144                         }
2145                 } while (state->split_start > 0);
2146                 break;
2147         }
2148         rtnl_unlock();
2149
2150         state->start = idx;
2151
2152         return skb->len;
2153 }
2154
2155 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2156 {
2157         kfree((void *)cb->args[0]);
2158         return 0;
2159 }
2160
2161 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2162 {
2163         struct sk_buff *msg;
2164         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2165         struct nl80211_dump_wiphy_state state = {};
2166
2167         msg = nlmsg_new(4096, GFP_KERNEL);
2168         if (!msg)
2169                 return -ENOMEM;
2170
2171         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2172                                info->snd_portid, info->snd_seq, 0,
2173                                &state) < 0) {
2174                 nlmsg_free(msg);
2175                 return -ENOBUFS;
2176         }
2177
2178         return genlmsg_reply(msg, info);
2179 }
2180
2181 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2182         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2183         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2184         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2185         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2186         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2187 };
2188
2189 static int parse_txq_params(struct nlattr *tb[],
2190                             struct ieee80211_txq_params *txq_params)
2191 {
2192         u8 ac;
2193
2194         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2195             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2196             !tb[NL80211_TXQ_ATTR_AIFS])
2197                 return -EINVAL;
2198
2199         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2200         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2201         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2202         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2203         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2204
2205         if (ac >= NL80211_NUM_ACS)
2206                 return -EINVAL;
2207         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2208         return 0;
2209 }
2210
2211 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2212 {
2213         /*
2214          * You can only set the channel explicitly for WDS interfaces,
2215          * all others have their channel managed via their respective
2216          * "establish a connection" command (connect, join, ...)
2217          *
2218          * For AP/GO and mesh mode, the channel can be set with the
2219          * channel userspace API, but is only stored and passed to the
2220          * low-level driver when the AP starts or the mesh is joined.
2221          * This is for backward compatibility, userspace can also give
2222          * the channel in the start-ap or join-mesh commands instead.
2223          *
2224          * Monitors are special as they are normally slaved to
2225          * whatever else is going on, so they have their own special
2226          * operation to set the monitor channel if possible.
2227          */
2228         return !wdev ||
2229                 wdev->iftype == NL80211_IFTYPE_AP ||
2230                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2231                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2232                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2233 }
2234
2235 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2236                                  struct genl_info *info,
2237                                  struct cfg80211_chan_def *chandef)
2238 {
2239         u32 control_freq;
2240
2241         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2242                 return -EINVAL;
2243
2244         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2245
2246         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2247         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2248         chandef->center_freq1 = control_freq;
2249         chandef->center_freq2 = 0;
2250
2251         /* Primary channel not allowed */
2252         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2253                 return -EINVAL;
2254
2255         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2256                 enum nl80211_channel_type chantype;
2257
2258                 chantype = nla_get_u32(
2259                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2260
2261                 switch (chantype) {
2262                 case NL80211_CHAN_NO_HT:
2263                 case NL80211_CHAN_HT20:
2264                 case NL80211_CHAN_HT40PLUS:
2265                 case NL80211_CHAN_HT40MINUS:
2266                         cfg80211_chandef_create(chandef, chandef->chan,
2267                                                 chantype);
2268                         /* user input for center_freq is incorrect */
2269                         if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2270                             chandef->center_freq1 != nla_get_u32(
2271                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2272                                 return -EINVAL;
2273                         /* center_freq2 must be zero */
2274                         if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2275                             nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2276                                 return -EINVAL;
2277                         break;
2278                 default:
2279                         return -EINVAL;
2280                 }
2281         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2282                 chandef->width =
2283                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2284                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2285                         chandef->center_freq1 =
2286                                 nla_get_u32(
2287                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2288                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2289                         chandef->center_freq2 =
2290                                 nla_get_u32(
2291                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2292         }
2293
2294         if (!cfg80211_chandef_valid(chandef))
2295                 return -EINVAL;
2296
2297         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2298                                      IEEE80211_CHAN_DISABLED))
2299                 return -EINVAL;
2300
2301         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2302              chandef->width == NL80211_CHAN_WIDTH_10) &&
2303             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2304                 return -EINVAL;
2305
2306         return 0;
2307 }
2308
2309 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2310                                  struct net_device *dev,
2311                                  struct genl_info *info)
2312 {
2313         struct cfg80211_chan_def chandef;
2314         int result;
2315         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2316         struct wireless_dev *wdev = NULL;
2317
2318         if (dev)
2319                 wdev = dev->ieee80211_ptr;
2320         if (!nl80211_can_set_dev_channel(wdev))
2321                 return -EOPNOTSUPP;
2322         if (wdev)
2323                 iftype = wdev->iftype;
2324
2325         result = nl80211_parse_chandef(rdev, info, &chandef);
2326         if (result)
2327                 return result;
2328
2329         switch (iftype) {
2330         case NL80211_IFTYPE_AP:
2331         case NL80211_IFTYPE_P2P_GO:
2332                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2333                                                    iftype)) {
2334                         result = -EINVAL;
2335                         break;
2336                 }
2337                 if (wdev->beacon_interval) {
2338                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2339                             !(rdev->wiphy.features &
2340                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2341                                 result = -EBUSY;
2342                                 break;
2343                         }
2344
2345                         /* Only allow dynamic channel width changes */
2346                         if (chandef.chan != wdev->preset_chandef.chan) {
2347                                 result = -EBUSY;
2348                                 break;
2349                         }
2350                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2351                         if (result)
2352                                 break;
2353                 }
2354                 wdev->preset_chandef = chandef;
2355                 result = 0;
2356                 break;
2357         case NL80211_IFTYPE_MESH_POINT:
2358                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2359                 break;
2360         case NL80211_IFTYPE_MONITOR:
2361                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2362                 break;
2363         default:
2364                 result = -EINVAL;
2365         }
2366
2367         return result;
2368 }
2369
2370 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2371 {
2372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2373         struct net_device *netdev = info->user_ptr[1];
2374
2375         return __nl80211_set_channel(rdev, netdev, info);
2376 }
2377
2378 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2379 {
2380         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2381         struct net_device *dev = info->user_ptr[1];
2382         struct wireless_dev *wdev = dev->ieee80211_ptr;
2383         const u8 *bssid;
2384
2385         if (!info->attrs[NL80211_ATTR_MAC])
2386                 return -EINVAL;
2387
2388         if (netif_running(dev))
2389                 return -EBUSY;
2390
2391         if (!rdev->ops->set_wds_peer)
2392                 return -EOPNOTSUPP;
2393
2394         if (wdev->iftype != NL80211_IFTYPE_WDS)
2395                 return -EOPNOTSUPP;
2396
2397         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2398         return rdev_set_wds_peer(rdev, dev, bssid);
2399 }
2400
2401 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2402 {
2403         struct cfg80211_registered_device *rdev;
2404         struct net_device *netdev = NULL;
2405         struct wireless_dev *wdev;
2406         int result = 0, rem_txq_params = 0;
2407         struct nlattr *nl_txq_params;
2408         u32 changed;
2409         u8 retry_short = 0, retry_long = 0;
2410         u32 frag_threshold = 0, rts_threshold = 0;
2411         u8 coverage_class = 0;
2412         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2413
2414         ASSERT_RTNL();
2415
2416         /*
2417          * Try to find the wiphy and netdev. Normally this
2418          * function shouldn't need the netdev, but this is
2419          * done for backward compatibility -- previously
2420          * setting the channel was done per wiphy, but now
2421          * it is per netdev. Previous userland like hostapd
2422          * also passed a netdev to set_wiphy, so that it is
2423          * possible to let that go to the right netdev!
2424          */
2425
2426         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2427                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2428
2429                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2430                 if (netdev && netdev->ieee80211_ptr)
2431                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2432                 else
2433                         netdev = NULL;
2434         }
2435
2436         if (!netdev) {
2437                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2438                                                   info->attrs);
2439                 if (IS_ERR(rdev))
2440                         return PTR_ERR(rdev);
2441                 wdev = NULL;
2442                 netdev = NULL;
2443                 result = 0;
2444         } else
2445                 wdev = netdev->ieee80211_ptr;
2446
2447         /*
2448          * end workaround code, by now the rdev is available
2449          * and locked, and wdev may or may not be NULL.
2450          */
2451
2452         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2453                 result = cfg80211_dev_rename(
2454                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2455
2456         if (result)
2457                 return result;
2458
2459         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2460                 struct ieee80211_txq_params txq_params;
2461                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2462
2463                 if (!rdev->ops->set_txq_params)
2464                         return -EOPNOTSUPP;
2465
2466                 if (!netdev)
2467                         return -EINVAL;
2468
2469                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2470                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2471                         return -EINVAL;
2472
2473                 if (!netif_running(netdev))
2474                         return -ENETDOWN;
2475
2476                 nla_for_each_nested(nl_txq_params,
2477                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2478                                     rem_txq_params) {
2479                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2480                                                   nl_txq_params,
2481                                                   txq_params_policy,
2482                                                   info->extack);
2483                         if (result)
2484                                 return result;
2485                         result = parse_txq_params(tb, &txq_params);
2486                         if (result)
2487                                 return result;
2488
2489                         result = rdev_set_txq_params(rdev, netdev,
2490                                                      &txq_params);
2491                         if (result)
2492                                 return result;
2493                 }
2494         }
2495
2496         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2497                 result = __nl80211_set_channel(
2498                         rdev,
2499                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2500                         info);
2501                 if (result)
2502                         return result;
2503         }
2504
2505         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2506                 struct wireless_dev *txp_wdev = wdev;
2507                 enum nl80211_tx_power_setting type;
2508                 int idx, mbm = 0;
2509
2510                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2511                         txp_wdev = NULL;
2512
2513                 if (!rdev->ops->set_tx_power)
2514                         return -EOPNOTSUPP;
2515
2516                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2517                 type = nla_get_u32(info->attrs[idx]);
2518
2519                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2520                     (type != NL80211_TX_POWER_AUTOMATIC))
2521                         return -EINVAL;
2522
2523                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2524                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2525                         mbm = nla_get_u32(info->attrs[idx]);
2526                 }
2527
2528                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2529                 if (result)
2530                         return result;
2531         }
2532
2533         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2534             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2535                 u32 tx_ant, rx_ant;
2536
2537                 if ((!rdev->wiphy.available_antennas_tx &&
2538                      !rdev->wiphy.available_antennas_rx) ||
2539                     !rdev->ops->set_antenna)
2540                         return -EOPNOTSUPP;
2541
2542                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2543                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2544
2545                 /* reject antenna configurations which don't match the
2546                  * available antenna masks, except for the "all" mask */
2547                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2548                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2549                         return -EINVAL;
2550
2551                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2552                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2553
2554                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2555                 if (result)
2556                         return result;
2557         }
2558
2559         changed = 0;
2560
2561         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2562                 retry_short = nla_get_u8(
2563                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2564                 if (retry_short == 0)
2565                         return -EINVAL;
2566
2567                 changed |= WIPHY_PARAM_RETRY_SHORT;
2568         }
2569
2570         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2571                 retry_long = nla_get_u8(
2572                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2573                 if (retry_long == 0)
2574                         return -EINVAL;
2575
2576                 changed |= WIPHY_PARAM_RETRY_LONG;
2577         }
2578
2579         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2580                 frag_threshold = nla_get_u32(
2581                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2582                 if (frag_threshold < 256)
2583                         return -EINVAL;
2584
2585                 if (frag_threshold != (u32) -1) {
2586                         /*
2587                          * Fragments (apart from the last one) are required to
2588                          * have even length. Make the fragmentation code
2589                          * simpler by stripping LSB should someone try to use
2590                          * odd threshold value.
2591                          */
2592                         frag_threshold &= ~0x1;
2593                 }
2594                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2595         }
2596
2597         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2598                 rts_threshold = nla_get_u32(
2599                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2600                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2601         }
2602
2603         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2604                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2605                         return -EINVAL;
2606
2607                 coverage_class = nla_get_u8(
2608                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2609                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2610         }
2611
2612         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2613                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2614                         return -EOPNOTSUPP;
2615
2616                 changed |= WIPHY_PARAM_DYN_ACK;
2617         }
2618
2619         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2620                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2621                                              NL80211_EXT_FEATURE_TXQS))
2622                         return -EOPNOTSUPP;
2623                 txq_limit = nla_get_u32(
2624                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2625                 changed |= WIPHY_PARAM_TXQ_LIMIT;
2626         }
2627
2628         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2629                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2630                                              NL80211_EXT_FEATURE_TXQS))
2631                         return -EOPNOTSUPP;
2632                 txq_memory_limit = nla_get_u32(
2633                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2634                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2635         }
2636
2637         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2638                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2639                                              NL80211_EXT_FEATURE_TXQS))
2640                         return -EOPNOTSUPP;
2641                 txq_quantum = nla_get_u32(
2642                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2643                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2644         }
2645
2646         if (changed) {
2647                 u8 old_retry_short, old_retry_long;
2648                 u32 old_frag_threshold, old_rts_threshold;
2649                 u8 old_coverage_class;
2650                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2651
2652                 if (!rdev->ops->set_wiphy_params)
2653                         return -EOPNOTSUPP;
2654
2655                 old_retry_short = rdev->wiphy.retry_short;
2656                 old_retry_long = rdev->wiphy.retry_long;
2657                 old_frag_threshold = rdev->wiphy.frag_threshold;
2658                 old_rts_threshold = rdev->wiphy.rts_threshold;
2659                 old_coverage_class = rdev->wiphy.coverage_class;
2660                 old_txq_limit = rdev->wiphy.txq_limit;
2661                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2662                 old_txq_quantum = rdev->wiphy.txq_quantum;
2663
2664                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2665                         rdev->wiphy.retry_short = retry_short;
2666                 if (changed & WIPHY_PARAM_RETRY_LONG)
2667                         rdev->wiphy.retry_long = retry_long;
2668                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2669                         rdev->wiphy.frag_threshold = frag_threshold;
2670                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2671                         rdev->wiphy.rts_threshold = rts_threshold;
2672                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2673                         rdev->wiphy.coverage_class = coverage_class;
2674                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2675                         rdev->wiphy.txq_limit = txq_limit;
2676                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2677                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
2678                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2679                         rdev->wiphy.txq_quantum = txq_quantum;
2680
2681                 result = rdev_set_wiphy_params(rdev, changed);
2682                 if (result) {
2683                         rdev->wiphy.retry_short = old_retry_short;
2684                         rdev->wiphy.retry_long = old_retry_long;
2685                         rdev->wiphy.frag_threshold = old_frag_threshold;
2686                         rdev->wiphy.rts_threshold = old_rts_threshold;
2687                         rdev->wiphy.coverage_class = old_coverage_class;
2688                         rdev->wiphy.txq_limit = old_txq_limit;
2689                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2690                         rdev->wiphy.txq_quantum = old_txq_quantum;
2691                         return result;
2692                 }
2693         }
2694         return 0;
2695 }
2696
2697 static inline u64 wdev_id(struct wireless_dev *wdev)
2698 {
2699         return (u64)wdev->identifier |
2700                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2701 }
2702
2703 static int nl80211_send_chandef(struct sk_buff *msg,
2704                                 const struct cfg80211_chan_def *chandef)
2705 {
2706         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2707                 return -EINVAL;
2708
2709         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2710                         chandef->chan->center_freq))
2711                 return -ENOBUFS;
2712         switch (chandef->width) {
2713         case NL80211_CHAN_WIDTH_20_NOHT:
2714         case NL80211_CHAN_WIDTH_20:
2715         case NL80211_CHAN_WIDTH_40:
2716                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2717                                 cfg80211_get_chandef_type(chandef)))
2718                         return -ENOBUFS;
2719                 break;
2720         default:
2721                 break;
2722         }
2723         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2724                 return -ENOBUFS;
2725         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2726                 return -ENOBUFS;
2727         if (chandef->center_freq2 &&
2728             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2729                 return -ENOBUFS;
2730         return 0;
2731 }
2732
2733 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2734                               struct cfg80211_registered_device *rdev,
2735                               struct wireless_dev *wdev, bool removal)
2736 {
2737         struct net_device *dev = wdev->netdev;
2738         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2739         void *hdr;
2740
2741         if (removal)
2742                 cmd = NL80211_CMD_DEL_INTERFACE;
2743
2744         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2745         if (!hdr)
2746                 return -1;
2747
2748         if (dev &&
2749             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2750              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2751                 goto nla_put_failure;
2752
2753         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2754             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2755             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2756                               NL80211_ATTR_PAD) ||
2757             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2758             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2759                         rdev->devlist_generation ^
2760                         (cfg80211_rdev_list_generation << 2)))
2761                 goto nla_put_failure;
2762
2763         if (rdev->ops->get_channel) {
2764                 int ret;
2765                 struct cfg80211_chan_def chandef;
2766
2767                 ret = rdev_get_channel(rdev, wdev, &chandef);
2768                 if (ret == 0) {
2769                         if (nl80211_send_chandef(msg, &chandef))
2770                                 goto nla_put_failure;
2771                 }
2772         }
2773
2774         if (rdev->ops->get_tx_power) {
2775                 int dbm, ret;
2776
2777                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2778                 if (ret == 0 &&
2779                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2780                                 DBM_TO_MBM(dbm)))
2781                         goto nla_put_failure;
2782         }
2783
2784         wdev_lock(wdev);
2785         switch (wdev->iftype) {
2786         case NL80211_IFTYPE_AP:
2787                 if (wdev->ssid_len &&
2788                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2789                         goto nla_put_failure_locked;
2790                 break;
2791         case NL80211_IFTYPE_STATION:
2792         case NL80211_IFTYPE_P2P_CLIENT:
2793         case NL80211_IFTYPE_ADHOC: {
2794                 const u8 *ssid_ie;
2795                 if (!wdev->current_bss)
2796                         break;
2797                 rcu_read_lock();
2798                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2799                                                WLAN_EID_SSID);
2800                 if (ssid_ie &&
2801                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2802                         goto nla_put_failure_rcu_locked;
2803                 rcu_read_unlock();
2804                 break;
2805                 }
2806         default:
2807                 /* nothing */
2808                 break;
2809         }
2810         wdev_unlock(wdev);
2811
2812         if (rdev->ops->get_txq_stats) {
2813                 struct cfg80211_txq_stats txqstats = {};
2814                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
2815
2816                 if (ret == 0 &&
2817                     !nl80211_put_txq_stats(msg, &txqstats,
2818                                            NL80211_ATTR_TXQ_STATS))
2819                         goto nla_put_failure;
2820         }
2821
2822         genlmsg_end(msg, hdr);
2823         return 0;
2824
2825  nla_put_failure_rcu_locked:
2826         rcu_read_unlock();
2827  nla_put_failure_locked:
2828         wdev_unlock(wdev);
2829  nla_put_failure:
2830         genlmsg_cancel(msg, hdr);
2831         return -EMSGSIZE;
2832 }
2833
2834 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2835 {
2836         int wp_idx = 0;
2837         int if_idx = 0;
2838         int wp_start = cb->args[0];
2839         int if_start = cb->args[1];
2840         int filter_wiphy = -1;
2841         struct cfg80211_registered_device *rdev;
2842         struct wireless_dev *wdev;
2843         int ret;
2844
2845         rtnl_lock();
2846         if (!cb->args[2]) {
2847                 struct nl80211_dump_wiphy_state state = {
2848                         .filter_wiphy = -1,
2849                 };
2850
2851                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2852                 if (ret)
2853                         goto out_unlock;
2854
2855                 filter_wiphy = state.filter_wiphy;
2856
2857                 /*
2858                  * if filtering, set cb->args[2] to +1 since 0 is the default
2859                  * value needed to determine that parsing is necessary.
2860                  */
2861                 if (filter_wiphy >= 0)
2862                         cb->args[2] = filter_wiphy + 1;
2863                 else
2864                         cb->args[2] = -1;
2865         } else if (cb->args[2] > 0) {
2866                 filter_wiphy = cb->args[2] - 1;
2867         }
2868
2869         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2870                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2871                         continue;
2872                 if (wp_idx < wp_start) {
2873                         wp_idx++;
2874                         continue;
2875                 }
2876
2877                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2878                         continue;
2879
2880                 if_idx = 0;
2881
2882                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2883                         if (if_idx < if_start) {
2884                                 if_idx++;
2885                                 continue;
2886                         }
2887                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2888                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2889                                                rdev, wdev, false) < 0) {
2890                                 goto out;
2891                         }
2892                         if_idx++;
2893                 }
2894
2895                 wp_idx++;
2896         }
2897  out:
2898         cb->args[0] = wp_idx;
2899         cb->args[1] = if_idx;
2900
2901         ret = skb->len;
2902  out_unlock:
2903         rtnl_unlock();
2904
2905         return ret;
2906 }
2907
2908 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2909 {
2910         struct sk_buff *msg;
2911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912         struct wireless_dev *wdev = info->user_ptr[1];
2913
2914         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2915         if (!msg)
2916                 return -ENOMEM;
2917
2918         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2919                                rdev, wdev, false) < 0) {
2920                 nlmsg_free(msg);
2921                 return -ENOBUFS;
2922         }
2923
2924         return genlmsg_reply(msg, info);
2925 }
2926
2927 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2928         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2929         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2930         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2931         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2932         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2933         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2934 };
2935
2936 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2937 {
2938         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2939         int flag;
2940
2941         *mntrflags = 0;
2942
2943         if (!nla)
2944                 return -EINVAL;
2945
2946         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2947                              mntr_flags_policy, NULL))
2948                 return -EINVAL;
2949
2950         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2951                 if (flags[flag])
2952                         *mntrflags |= (1<<flag);
2953
2954         *mntrflags |= MONITOR_FLAG_CHANGED;
2955
2956         return 0;
2957 }
2958
2959 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2960                                      enum nl80211_iftype type,
2961                                      struct genl_info *info,
2962                                      struct vif_params *params)
2963 {
2964         bool change = false;
2965         int err;
2966
2967         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2968                 if (type != NL80211_IFTYPE_MONITOR)
2969                         return -EINVAL;
2970
2971                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2972                                           &params->flags);
2973                 if (err)
2974                         return err;
2975
2976                 change = true;
2977         }
2978
2979         if (params->flags & MONITOR_FLAG_ACTIVE &&
2980             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2981                 return -EOPNOTSUPP;
2982
2983         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2984                 const u8 *mumimo_groups;
2985                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2986
2987                 if (type != NL80211_IFTYPE_MONITOR)
2988                         return -EINVAL;
2989
2990                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2991                         return -EOPNOTSUPP;
2992
2993                 mumimo_groups =
2994                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2995
2996                 /* bits 0 and 63 are reserved and must be zero */
2997                 if ((mumimo_groups[0] & BIT(0)) ||
2998                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2999                         return -EINVAL;
3000
3001                 params->vht_mumimo_groups = mumimo_groups;
3002                 change = true;
3003         }
3004
3005         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3006                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3007
3008                 if (type != NL80211_IFTYPE_MONITOR)
3009                         return -EINVAL;
3010
3011                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3012                         return -EOPNOTSUPP;
3013
3014                 params->vht_mumimo_follow_addr =
3015                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3016                 change = true;
3017         }
3018
3019         return change ? 1 : 0;
3020 }
3021
3022 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3023                                struct net_device *netdev, u8 use_4addr,
3024                                enum nl80211_iftype iftype)
3025 {
3026         if (!use_4addr) {
3027                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3028                         return -EBUSY;
3029                 return 0;
3030         }
3031
3032         switch (iftype) {
3033         case NL80211_IFTYPE_AP_VLAN:
3034                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3035                         return 0;
3036                 break;
3037         case NL80211_IFTYPE_STATION:
3038                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3039                         return 0;
3040                 break;
3041         default:
3042                 break;
3043         }
3044
3045         return -EOPNOTSUPP;
3046 }
3047
3048 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3049 {
3050         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3051         struct vif_params params;
3052         int err;
3053         enum nl80211_iftype otype, ntype;
3054         struct net_device *dev = info->user_ptr[1];
3055         bool change = false;
3056
3057         memset(&params, 0, sizeof(params));
3058
3059         otype = ntype = dev->ieee80211_ptr->iftype;
3060
3061         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3062                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3063                 if (otype != ntype)
3064                         change = true;
3065                 if (ntype > NL80211_IFTYPE_MAX)
3066                         return -EINVAL;
3067         }
3068
3069         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3070                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3071
3072                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3073                         return -EINVAL;
3074                 if (netif_running(dev))
3075                         return -EBUSY;
3076
3077                 wdev_lock(wdev);
3078                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3079                              IEEE80211_MAX_MESH_ID_LEN);
3080                 wdev->mesh_id_up_len =
3081                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3082                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3083                        wdev->mesh_id_up_len);
3084                 wdev_unlock(wdev);
3085         }
3086
3087         if (info->attrs[NL80211_ATTR_4ADDR]) {
3088                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3089                 change = true;
3090                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3091                 if (err)
3092                         return err;
3093         } else {
3094                 params.use_4addr = -1;
3095         }
3096
3097         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3098         if (err < 0)
3099                 return err;
3100         if (err > 0)
3101                 change = true;
3102
3103         if (change)
3104                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3105         else
3106                 err = 0;
3107
3108         if (!err && params.use_4addr != -1)
3109                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3110
3111         return err;
3112 }
3113
3114 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3115 {
3116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3117         struct vif_params params;
3118         struct wireless_dev *wdev;
3119         struct sk_buff *msg;
3120         int err;
3121         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3122
3123         /* to avoid failing a new interface creation due to pending removal */
3124         cfg80211_destroy_ifaces(rdev);
3125
3126         memset(&params, 0, sizeof(params));
3127
3128         if (!info->attrs[NL80211_ATTR_IFNAME])
3129                 return -EINVAL;
3130
3131         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3132                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3133                 if (type > NL80211_IFTYPE_MAX)
3134                         return -EINVAL;
3135         }
3136
3137         if (!rdev->ops->add_virtual_intf ||
3138             !(rdev->wiphy.interface_modes & (1 << type)))
3139                 return -EOPNOTSUPP;
3140
3141         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3142              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3143             info->attrs[NL80211_ATTR_MAC]) {
3144                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3145                            ETH_ALEN);
3146                 if (!is_valid_ether_addr(params.macaddr))
3147                         return -EADDRNOTAVAIL;
3148         }
3149
3150         if (info->attrs[NL80211_ATTR_4ADDR]) {
3151                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3152                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3153                 if (err)
3154                         return err;
3155         }
3156
3157         err = nl80211_parse_mon_options(rdev, type, info, &params);
3158         if (err < 0)
3159                 return err;
3160
3161         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3162         if (!msg)
3163                 return -ENOMEM;
3164
3165         wdev = rdev_add_virtual_intf(rdev,
3166                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3167                                 NET_NAME_USER, type, &params);
3168         if (WARN_ON(!wdev)) {
3169                 nlmsg_free(msg);
3170                 return -EPROTO;
3171         } else if (IS_ERR(wdev)) {
3172                 nlmsg_free(msg);
3173                 return PTR_ERR(wdev);
3174         }
3175
3176         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3177                 wdev->owner_nlportid = info->snd_portid;
3178
3179         switch (type) {
3180         case NL80211_IFTYPE_MESH_POINT:
3181                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3182                         break;
3183                 wdev_lock(wdev);
3184                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3185                              IEEE80211_MAX_MESH_ID_LEN);
3186                 wdev->mesh_id_up_len =
3187                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3188                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3189                        wdev->mesh_id_up_len);
3190                 wdev_unlock(wdev);
3191                 break;
3192         case NL80211_IFTYPE_NAN:
3193         case NL80211_IFTYPE_P2P_DEVICE:
3194                 /*
3195                  * P2P Device and NAN do not have a netdev, so don't go
3196                  * through the netdev notifier and must be added here
3197                  */
3198                 mutex_init(&wdev->mtx);
3199                 INIT_LIST_HEAD(&wdev->event_list);
3200                 spin_lock_init(&wdev->event_lock);
3201                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3202                 spin_lock_init(&wdev->mgmt_registrations_lock);
3203
3204                 wdev->identifier = ++rdev->wdev_id;
3205                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3206                 rdev->devlist_generation++;
3207                 break;
3208         default:
3209                 break;
3210         }
3211
3212         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3213                                rdev, wdev, false) < 0) {
3214                 nlmsg_free(msg);
3215                 return -ENOBUFS;
3216         }
3217
3218         /*
3219          * For wdevs which have no associated netdev object (e.g. of type
3220          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3221          * For all other types, the event will be generated from the
3222          * netdev notifier
3223          */
3224         if (!wdev->netdev)
3225                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3226
3227         return genlmsg_reply(msg, info);
3228 }
3229
3230 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3231 {
3232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3233         struct wireless_dev *wdev = info->user_ptr[1];
3234
3235         if (!rdev->ops->del_virtual_intf)
3236                 return -EOPNOTSUPP;
3237
3238         /*
3239          * If we remove a wireless device without a netdev then clear
3240          * user_ptr[1] so that nl80211_post_doit won't dereference it
3241          * to check if it needs to do dev_put(). Otherwise it crashes
3242          * since the wdev has been freed, unlike with a netdev where
3243          * we need the dev_put() for the netdev to really be freed.
3244          */
3245         if (!wdev->netdev)
3246                 info->user_ptr[1] = NULL;
3247
3248         return rdev_del_virtual_intf(rdev, wdev);
3249 }
3250
3251 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3252 {
3253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3254         struct net_device *dev = info->user_ptr[1];
3255         u16 noack_map;
3256
3257         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3258                 return -EINVAL;
3259
3260         if (!rdev->ops->set_noack_map)
3261                 return -EOPNOTSUPP;
3262
3263         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3264
3265         return rdev_set_noack_map(rdev, dev, noack_map);
3266 }
3267
3268 struct get_key_cookie {
3269         struct sk_buff *msg;
3270         int error;
3271         int idx;
3272 };
3273
3274 static void get_key_callback(void *c, struct key_params *params)
3275 {
3276         struct nlattr *key;
3277         struct get_key_cookie *cookie = c;
3278
3279         if ((params->key &&
3280              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3281                      params->key_len, params->key)) ||
3282             (params->seq &&
3283              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3284                      params->seq_len, params->seq)) ||
3285             (params->cipher &&
3286              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3287                          params->cipher)))
3288                 goto nla_put_failure;
3289
3290         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3291         if (!key)
3292                 goto nla_put_failure;
3293
3294         if ((params->key &&
3295              nla_put(cookie->msg, NL80211_KEY_DATA,
3296                      params->key_len, params->key)) ||
3297             (params->seq &&
3298              nla_put(cookie->msg, NL80211_KEY_SEQ,
3299                      params->seq_len, params->seq)) ||
3300             (params->cipher &&
3301              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3302                          params->cipher)))
3303                 goto nla_put_failure;
3304
3305         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3306                 goto nla_put_failure;
3307
3308         nla_nest_end(cookie->msg, key);
3309
3310         return;
3311  nla_put_failure:
3312         cookie->error = 1;
3313 }
3314
3315 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3316 {
3317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3318         int err;
3319         struct net_device *dev = info->user_ptr[1];
3320         u8 key_idx = 0;
3321         const u8 *mac_addr = NULL;
3322         bool pairwise;
3323         struct get_key_cookie cookie = {
3324                 .error = 0,
3325         };
3326         void *hdr;
3327         struct sk_buff *msg;
3328
3329         if (info->attrs[NL80211_ATTR_KEY_IDX])
3330                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3331
3332         if (key_idx > 5)
3333                 return -EINVAL;
3334
3335         if (info->attrs[NL80211_ATTR_MAC])
3336                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3337
3338         pairwise = !!mac_addr;
3339         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3340                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3341
3342                 if (kt >= NUM_NL80211_KEYTYPES)
3343                         return -EINVAL;
3344                 if (kt != NL80211_KEYTYPE_GROUP &&
3345                     kt != NL80211_KEYTYPE_PAIRWISE)
3346                         return -EINVAL;
3347                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3348         }
3349
3350         if (!rdev->ops->get_key)
3351                 return -EOPNOTSUPP;
3352
3353         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3354                 return -ENOENT;
3355
3356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3357         if (!msg)
3358                 return -ENOMEM;
3359
3360         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3361                              NL80211_CMD_NEW_KEY);
3362         if (!hdr)
3363                 goto nla_put_failure;
3364
3365         cookie.msg = msg;
3366         cookie.idx = key_idx;
3367
3368         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3369             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3370                 goto nla_put_failure;
3371         if (mac_addr &&
3372             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3373                 goto nla_put_failure;
3374
3375         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3376                            get_key_callback);
3377
3378         if (err)
3379                 goto free_msg;
3380
3381         if (cookie.error)
3382                 goto nla_put_failure;
3383
3384         genlmsg_end(msg, hdr);
3385         return genlmsg_reply(msg, info);
3386
3387  nla_put_failure:
3388         err = -ENOBUFS;
3389  free_msg:
3390         nlmsg_free(msg);
3391         return err;
3392 }
3393
3394 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3395 {
3396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3397         struct key_parse key;
3398         int err;
3399         struct net_device *dev = info->user_ptr[1];
3400
3401         err = nl80211_parse_key(info, &key);
3402         if (err)
3403                 return err;
3404
3405         if (key.idx < 0)
3406                 return -EINVAL;
3407
3408         /* only support setting default key */
3409         if (!key.def && !key.defmgmt)
3410                 return -EINVAL;
3411
3412         wdev_lock(dev->ieee80211_ptr);
3413
3414         if (key.def) {
3415                 if (!rdev->ops->set_default_key) {
3416                         err = -EOPNOTSUPP;
3417                         goto out;
3418                 }
3419
3420                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3421                 if (err)
3422                         goto out;
3423
3424                 err = rdev_set_default_key(rdev, dev, key.idx,
3425                                                  key.def_uni, key.def_multi);
3426
3427                 if (err)
3428                         goto out;
3429
3430 #ifdef CONFIG_CFG80211_WEXT
3431                 dev->ieee80211_ptr->wext.default_key = key.idx;
3432 #endif
3433         } else {
3434                 if (key.def_uni || !key.def_multi) {
3435                         err = -EINVAL;
3436                         goto out;
3437                 }
3438
3439                 if (!rdev->ops->set_default_mgmt_key) {
3440                         err = -EOPNOTSUPP;
3441                         goto out;
3442                 }
3443
3444                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3445                 if (err)
3446                         goto out;
3447
3448                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3449                 if (err)
3450                         goto out;
3451
3452 #ifdef CONFIG_CFG80211_WEXT
3453                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3454 #endif
3455         }
3456
3457  out:
3458         wdev_unlock(dev->ieee80211_ptr);
3459
3460         return err;
3461 }
3462
3463 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3464 {
3465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3466         int err;
3467         struct net_device *dev = info->user_ptr[1];
3468         struct key_parse key;
3469         const u8 *mac_addr = NULL;
3470
3471         err = nl80211_parse_key(info, &key);
3472         if (err)
3473                 return err;
3474
3475         if (!key.p.key)
3476                 return -EINVAL;
3477
3478         if (info->attrs[NL80211_ATTR_MAC])
3479                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3480
3481         if (key.type == -1) {
3482                 if (mac_addr)
3483                         key.type = NL80211_KEYTYPE_PAIRWISE;
3484                 else
3485                         key.type = NL80211_KEYTYPE_GROUP;
3486         }
3487
3488         /* for now */
3489         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3490             key.type != NL80211_KEYTYPE_GROUP)
3491                 return -EINVAL;
3492
3493         if (!rdev->ops->add_key)
3494                 return -EOPNOTSUPP;
3495
3496         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3497                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3498                                            mac_addr))
3499                 return -EINVAL;
3500
3501         wdev_lock(dev->ieee80211_ptr);
3502         err = nl80211_key_allowed(dev->ieee80211_ptr);
3503         if (!err)
3504                 err = rdev_add_key(rdev, dev, key.idx,
3505                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3506                                     mac_addr, &key.p);
3507         wdev_unlock(dev->ieee80211_ptr);
3508
3509         return err;
3510 }
3511
3512 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3513 {
3514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3515         int err;
3516         struct net_device *dev = info->user_ptr[1];
3517         u8 *mac_addr = NULL;
3518         struct key_parse key;
3519
3520         err = nl80211_parse_key(info, &key);
3521         if (err)
3522                 return err;
3523
3524         if (info->attrs[NL80211_ATTR_MAC])
3525                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3526
3527         if (key.type == -1) {
3528                 if (mac_addr)
3529                         key.type = NL80211_KEYTYPE_PAIRWISE;
3530                 else
3531                         key.type = NL80211_KEYTYPE_GROUP;
3532         }
3533
3534         /* for now */
3535         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3536             key.type != NL80211_KEYTYPE_GROUP)
3537                 return -EINVAL;
3538
3539         if (!rdev->ops->del_key)
3540                 return -EOPNOTSUPP;
3541
3542         wdev_lock(dev->ieee80211_ptr);
3543         err = nl80211_key_allowed(dev->ieee80211_ptr);
3544
3545         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3546             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3547                 err = -ENOENT;
3548
3549         if (!err)
3550                 err = rdev_del_key(rdev, dev, key.idx,
3551                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3552                                    mac_addr);
3553
3554 #ifdef CONFIG_CFG80211_WEXT
3555         if (!err) {
3556                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3557                         dev->ieee80211_ptr->wext.default_key = -1;
3558                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3559                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3560         }
3561 #endif
3562         wdev_unlock(dev->ieee80211_ptr);
3563
3564         return err;
3565 }
3566
3567 /* This function returns an error or the number of nested attributes */
3568 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3569 {
3570         struct nlattr *attr;
3571         int n_entries = 0, tmp;
3572
3573         nla_for_each_nested(attr, nl_attr, tmp) {
3574                 if (nla_len(attr) != ETH_ALEN)
3575                         return -EINVAL;
3576
3577                 n_entries++;
3578         }
3579
3580         return n_entries;
3581 }
3582
3583 /*
3584  * This function parses ACL information and allocates memory for ACL data.
3585  * On successful return, the calling function is responsible to free the
3586  * ACL buffer returned by this function.
3587  */
3588 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3589                                                 struct genl_info *info)
3590 {
3591         enum nl80211_acl_policy acl_policy;
3592         struct nlattr *attr;
3593         struct cfg80211_acl_data *acl;
3594         int i = 0, n_entries, tmp;
3595
3596         if (!wiphy->max_acl_mac_addrs)
3597                 return ERR_PTR(-EOPNOTSUPP);
3598
3599         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3600                 return ERR_PTR(-EINVAL);
3601
3602         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3603         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3604             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3605                 return ERR_PTR(-EINVAL);
3606
3607         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3608                 return ERR_PTR(-EINVAL);
3609
3610         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3611         if (n_entries < 0)
3612                 return ERR_PTR(n_entries);
3613
3614         if (n_entries > wiphy->max_acl_mac_addrs)
3615                 return ERR_PTR(-ENOTSUPP);
3616
3617         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3618                       GFP_KERNEL);
3619         if (!acl)
3620                 return ERR_PTR(-ENOMEM);
3621
3622         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3623                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3624                 i++;
3625         }
3626
3627         acl->n_acl_entries = n_entries;
3628         acl->acl_policy = acl_policy;
3629
3630         return acl;
3631 }
3632
3633 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3634 {
3635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3636         struct net_device *dev = info->user_ptr[1];
3637         struct cfg80211_acl_data *acl;
3638         int err;
3639
3640         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3641             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3642                 return -EOPNOTSUPP;
3643
3644         if (!dev->ieee80211_ptr->beacon_interval)
3645                 return -EINVAL;
3646
3647         acl = parse_acl_data(&rdev->wiphy, info);
3648         if (IS_ERR(acl))
3649                 return PTR_ERR(acl);
3650
3651         err = rdev_set_mac_acl(rdev, dev, acl);
3652
3653         kfree(acl);
3654
3655         return err;
3656 }
3657
3658 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3659                            u8 *rates, u8 rates_len)
3660 {
3661         u8 i;
3662         u32 mask = 0;
3663
3664         for (i = 0; i < rates_len; i++) {
3665                 int rate = (rates[i] & 0x7f) * 5;
3666                 int ridx;
3667
3668                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3669                         struct ieee80211_rate *srate =
3670                                 &sband->bitrates[ridx];
3671                         if (rate == srate->bitrate) {
3672                                 mask |= 1 << ridx;
3673                                 break;
3674                         }
3675                 }
3676                 if (ridx == sband->n_bitrates)
3677                         return 0; /* rate not found */
3678         }
3679
3680         return mask;
3681 }
3682
3683 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3684                                u8 *rates, u8 rates_len,
3685                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3686 {
3687         u8 i;
3688
3689         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3690
3691         for (i = 0; i < rates_len; i++) {
3692                 int ridx, rbit;
3693
3694                 ridx = rates[i] / 8;
3695                 rbit = BIT(rates[i] % 8);
3696
3697                 /* check validity */
3698                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3699                         return false;
3700
3701                 /* check availability */
3702                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3703                         mcs[ridx] |= rbit;
3704                 else
3705                         return false;
3706         }
3707
3708         return true;
3709 }
3710
3711 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3712 {
3713         u16 mcs_mask = 0;
3714
3715         switch (vht_mcs_map) {
3716         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3717                 break;
3718         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3719                 mcs_mask = 0x00FF;
3720                 break;
3721         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3722                 mcs_mask = 0x01FF;
3723                 break;
3724         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3725                 mcs_mask = 0x03FF;
3726                 break;
3727         default:
3728                 break;
3729         }
3730
3731         return mcs_mask;
3732 }
3733
3734 static void vht_build_mcs_mask(u16 vht_mcs_map,
3735                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3736 {
3737         u8 nss;
3738
3739         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3740                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3741                 vht_mcs_map >>= 2;
3742         }
3743 }
3744
3745 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3746                              struct nl80211_txrate_vht *txrate,
3747                              u16 mcs[NL80211_VHT_NSS_MAX])
3748 {
3749         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3750         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3751         u8 i;
3752
3753         if (!sband->vht_cap.vht_supported)
3754                 return false;
3755
3756         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3757
3758         /* Build vht_mcs_mask from VHT capabilities */
3759         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3760
3761         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3762                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3763                         mcs[i] = txrate->mcs[i];
3764                 else
3765                         return false;
3766         }
3767
3768         return true;
3769 }
3770
3771 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3772         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3773                                     .len = NL80211_MAX_SUPP_RATES },
3774         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3775                                 .len = NL80211_MAX_SUPP_HT_RATES },
3776         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3777         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3778 };
3779
3780 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3781                                          struct cfg80211_bitrate_mask *mask)
3782 {
3783         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3785         int rem, i;
3786         struct nlattr *tx_rates;
3787         struct ieee80211_supported_band *sband;
3788         u16 vht_tx_mcs_map;
3789
3790         memset(mask, 0, sizeof(*mask));
3791         /* Default to all rates enabled */
3792         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3793                 sband = rdev->wiphy.bands[i];
3794
3795                 if (!sband)
3796                         continue;
3797
3798                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3799                 memcpy(mask->control[i].ht_mcs,
3800                        sband->ht_cap.mcs.rx_mask,
3801                        sizeof(mask->control[i].ht_mcs));
3802
3803                 if (!sband->vht_cap.vht_supported)
3804                         continue;
3805
3806                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3807                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3808         }
3809
3810         /* if no rates are given set it back to the defaults */
3811         if (!info->attrs[NL80211_ATTR_TX_RATES])
3812                 goto out;
3813
3814         /* The nested attribute uses enum nl80211_band as the index. This maps
3815          * directly to the enum nl80211_band values used in cfg80211.
3816          */
3817         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3818         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3819                 enum nl80211_band band = nla_type(tx_rates);
3820                 int err;
3821
3822                 if (band < 0 || band >= NUM_NL80211_BANDS)
3823                         return -EINVAL;
3824                 sband = rdev->wiphy.bands[band];
3825                 if (sband == NULL)
3826                         return -EINVAL;
3827                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3828                                        nl80211_txattr_policy, info->extack);
3829                 if (err)
3830                         return err;
3831                 if (tb[NL80211_TXRATE_LEGACY]) {
3832                         mask->control[band].legacy = rateset_to_mask(
3833                                 sband,
3834                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
3835                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
3836                         if ((mask->control[band].legacy == 0) &&
3837                             nla_len(tb[NL80211_TXRATE_LEGACY]))
3838                                 return -EINVAL;
3839                 }
3840                 if (tb[NL80211_TXRATE_HT]) {
3841                         if (!ht_rateset_to_mask(
3842                                         sband,
3843                                         nla_data(tb[NL80211_TXRATE_HT]),
3844                                         nla_len(tb[NL80211_TXRATE_HT]),
3845                                         mask->control[band].ht_mcs))
3846                                 return -EINVAL;
3847                 }
3848                 if (tb[NL80211_TXRATE_VHT]) {
3849                         if (!vht_set_mcs_mask(
3850                                         sband,
3851                                         nla_data(tb[NL80211_TXRATE_VHT]),
3852                                         mask->control[band].vht_mcs))
3853                                 return -EINVAL;
3854                 }
3855                 if (tb[NL80211_TXRATE_GI]) {
3856                         mask->control[band].gi =
3857                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
3858                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3859                                 return -EINVAL;
3860                 }
3861
3862                 if (mask->control[band].legacy == 0) {
3863                         /* don't allow empty legacy rates if HT or VHT
3864                          * are not even supported.
3865                          */
3866                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3867                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
3868                                 return -EINVAL;
3869
3870                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3871                                 if (mask->control[band].ht_mcs[i])
3872                                         goto out;
3873
3874                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3875                                 if (mask->control[band].vht_mcs[i])
3876                                         goto out;
3877
3878                         /* legacy and mcs rates may not be both empty */
3879                         return -EINVAL;
3880                 }
3881         }
3882
3883 out:
3884         return 0;
3885 }
3886
3887 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3888                                    enum nl80211_band band,
3889                                    struct cfg80211_bitrate_mask *beacon_rate)
3890 {
3891         u32 count_ht, count_vht, i;
3892         u32 rate = beacon_rate->control[band].legacy;
3893
3894         /* Allow only one rate */
3895         if (hweight32(rate) > 1)
3896                 return -EINVAL;
3897
3898         count_ht = 0;
3899         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3900                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3901                         return -EINVAL;
3902                 } else if (beacon_rate->control[band].ht_mcs[i]) {
3903                         count_ht++;
3904                         if (count_ht > 1)
3905                                 return -EINVAL;
3906                 }
3907                 if (count_ht && rate)
3908                         return -EINVAL;
3909         }
3910
3911         count_vht = 0;
3912         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3913                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3914                         return -EINVAL;
3915                 } else if (beacon_rate->control[band].vht_mcs[i]) {
3916                         count_vht++;
3917                         if (count_vht > 1)
3918                                 return -EINVAL;
3919                 }
3920                 if (count_vht && rate)
3921                         return -EINVAL;
3922         }
3923
3924         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3925                 return -EINVAL;
3926
3927         if (rate &&
3928             !wiphy_ext_feature_isset(&rdev->wiphy,
3929                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3930                 return -EINVAL;
3931         if (count_ht &&
3932             !wiphy_ext_feature_isset(&rdev->wiphy,
3933                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
3934                 return -EINVAL;
3935         if (count_vht &&
3936             !wiphy_ext_feature_isset(&rdev->wiphy,
3937                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3938                 return -EINVAL;
3939
3940         return 0;
3941 }
3942
3943 static int nl80211_parse_beacon(struct nlattr *attrs[],
3944                                 struct cfg80211_beacon_data *bcn)
3945 {
3946         bool haveinfo = false;
3947
3948         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3949             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3950             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3951             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3952                 return -EINVAL;
3953
3954         memset(bcn, 0, sizeof(*bcn));
3955
3956         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3957                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3958                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3959                 if (!bcn->head_len)
3960                         return -EINVAL;
3961                 haveinfo = true;
3962         }
3963
3964         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3965                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3966                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3967                 haveinfo = true;
3968         }
3969
3970         if (!haveinfo)
3971                 return -EINVAL;
3972
3973         if (attrs[NL80211_ATTR_IE]) {
3974                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3975                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3976         }
3977
3978         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3979                 bcn->proberesp_ies =
3980                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3981                 bcn->proberesp_ies_len =
3982                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3983         }
3984
3985         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3986                 bcn->assocresp_ies =
3987                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3988                 bcn->assocresp_ies_len =
3989                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3990         }
3991
3992         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3993                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3994                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3995         }
3996
3997         return 0;
3998 }
3999
4000 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4001                                             const u8 *rates)
4002 {
4003         int i;
4004
4005         if (!rates)
4006                 return;
4007
4008         for (i = 0; i < rates[1]; i++) {
4009                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4010                         params->ht_required = true;
4011                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4012                         params->vht_required = true;
4013         }
4014 }
4015
4016 /*
4017  * Since the nl80211 API didn't include, from the beginning, attributes about
4018  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4019  * benefit of drivers that rebuild IEs in the firmware.
4020  */
4021 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4022 {
4023         const struct cfg80211_beacon_data *bcn = &params->beacon;
4024         size_t ies_len = bcn->tail_len;
4025         const u8 *ies = bcn->tail;
4026         const u8 *rates;
4027         const u8 *cap;
4028
4029         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4030         nl80211_check_ap_rate_selectors(params, rates);
4031
4032         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4033         nl80211_check_ap_rate_selectors(params, rates);
4034
4035         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4036         if (cap && cap[1] >= sizeof(*params->ht_cap))
4037                 params->ht_cap = (void *)(cap + 2);
4038         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4039         if (cap && cap[1] >= sizeof(*params->vht_cap))
4040                 params->vht_cap = (void *)(cap + 2);
4041 }
4042
4043 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4044                                    struct cfg80211_ap_settings *params)
4045 {
4046         struct wireless_dev *wdev;
4047         bool ret = false;
4048
4049         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4050                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4051                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4052                         continue;
4053
4054                 if (!wdev->preset_chandef.chan)
4055                         continue;
4056
4057                 params->chandef = wdev->preset_chandef;
4058                 ret = true;
4059                 break;
4060         }
4061
4062         return ret;
4063 }
4064
4065 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4066                                     enum nl80211_auth_type auth_type,
4067                                     enum nl80211_commands cmd)
4068 {
4069         if (auth_type > NL80211_AUTHTYPE_MAX)
4070                 return false;
4071
4072         switch (cmd) {
4073         case NL80211_CMD_AUTHENTICATE:
4074                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4075                     auth_type == NL80211_AUTHTYPE_SAE)
4076                         return false;
4077                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4078                                              NL80211_EXT_FEATURE_FILS_STA) &&
4079                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4080                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4081                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4082                         return false;
4083                 return true;
4084         case NL80211_CMD_CONNECT:
4085                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4086                     auth_type == NL80211_AUTHTYPE_SAE)
4087                         return false;
4088
4089                 /* FILS with SK PFS or PK not supported yet */
4090                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4091                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4092                         return false;
4093                 if (!wiphy_ext_feature_isset(
4094                             &rdev->wiphy,
4095                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4096                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4097                         return false;
4098                 return true;
4099         case NL80211_CMD_START_AP:
4100                 /* SAE not supported yet */
4101                 if (auth_type == NL80211_AUTHTYPE_SAE)
4102                         return false;
4103                 /* FILS not supported yet */
4104                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4105                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4106                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4107                         return false;
4108                 return true;
4109         default:
4110                 return false;
4111         }
4112 }
4113
4114 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4115 {
4116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4117         struct net_device *dev = info->user_ptr[1];
4118         struct wireless_dev *wdev = dev->ieee80211_ptr;
4119         struct cfg80211_ap_settings params;
4120         int err;
4121
4122         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4123             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4124                 return -EOPNOTSUPP;
4125
4126         if (!rdev->ops->start_ap)
4127                 return -EOPNOTSUPP;
4128
4129         if (wdev->beacon_interval)
4130                 return -EALREADY;
4131
4132         memset(&params, 0, sizeof(params));
4133
4134         /* these are required for START_AP */
4135         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4136             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4137             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4138                 return -EINVAL;
4139
4140         err = nl80211_parse_beacon(info->attrs, &params.beacon);
4141         if (err)
4142                 return err;
4143
4144         params.beacon_interval =
4145                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4146         params.dtim_period =
4147                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4148
4149         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4150                                            params.beacon_interval);
4151         if (err)
4152                 return err;
4153
4154         /*
4155          * In theory, some of these attributes should be required here
4156          * but since they were not used when the command was originally
4157          * added, keep them optional for old user space programs to let
4158          * them continue to work with drivers that do not need the
4159          * additional information -- drivers must check!
4160          */
4161         if (info->attrs[NL80211_ATTR_SSID]) {
4162                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4163                 params.ssid_len =
4164                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4165                 if (params.ssid_len == 0 ||
4166                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4167                         return -EINVAL;
4168         }
4169
4170         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4171                 params.hidden_ssid = nla_get_u32(
4172                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4173                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4174                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4175                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4176                         return -EINVAL;
4177         }
4178
4179         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4180
4181         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4182                 params.auth_type = nla_get_u32(
4183                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4184                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4185                                              NL80211_CMD_START_AP))
4186                         return -EINVAL;
4187         } else
4188                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4189
4190         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4191                                       NL80211_MAX_NR_CIPHER_SUITES);
4192         if (err)
4193                 return err;
4194
4195         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4196                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4197                         return -EOPNOTSUPP;
4198                 params.inactivity_timeout = nla_get_u16(
4199                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4200         }
4201
4202         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4203                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4204                         return -EINVAL;
4205                 params.p2p_ctwindow =
4206                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4207                 if (params.p2p_ctwindow > 127)
4208                         return -EINVAL;
4209                 if (params.p2p_ctwindow != 0 &&
4210                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4211                         return -EINVAL;
4212         }
4213
4214         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4215                 u8 tmp;
4216
4217                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4218                         return -EINVAL;
4219                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4220                 if (tmp > 1)
4221                         return -EINVAL;
4222                 params.p2p_opp_ps = tmp;
4223                 if (params.p2p_opp_ps != 0 &&
4224                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4225                         return -EINVAL;
4226         }
4227
4228         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4229                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4230                 if (err)
4231                         return err;
4232         } else if (wdev->preset_chandef.chan) {
4233                 params.chandef = wdev->preset_chandef;
4234         } else if (!nl80211_get_ap_channel(rdev, &params))
4235                 return -EINVAL;
4236
4237         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4238                                            wdev->iftype))
4239                 return -EINVAL;
4240
4241         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4242                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4243                 if (err)
4244                         return err;
4245
4246                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4247                                               &params.beacon_rate);
4248                 if (err)
4249                         return err;
4250         }
4251
4252         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4253                 params.smps_mode =
4254                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4255                 switch (params.smps_mode) {
4256                 case NL80211_SMPS_OFF:
4257                         break;
4258                 case NL80211_SMPS_STATIC:
4259                         if (!(rdev->wiphy.features &
4260                               NL80211_FEATURE_STATIC_SMPS))
4261                                 return -EINVAL;
4262                         break;
4263                 case NL80211_SMPS_DYNAMIC:
4264                         if (!(rdev->wiphy.features &
4265                               NL80211_FEATURE_DYNAMIC_SMPS))
4266                                 return -EINVAL;
4267                         break;
4268                 default:
4269                         return -EINVAL;
4270                 }
4271         } else {
4272                 params.smps_mode = NL80211_SMPS_OFF;
4273         }
4274
4275         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4276         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4277                 return -EOPNOTSUPP;
4278
4279         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4280                 params.acl = parse_acl_data(&rdev->wiphy, info);
4281                 if (IS_ERR(params.acl))
4282                         return PTR_ERR(params.acl);
4283         }
4284
4285         nl80211_calculate_ap_params(&params);
4286
4287         wdev_lock(wdev);
4288         err = rdev_start_ap(rdev, dev, &params);
4289         if (!err) {
4290                 wdev->preset_chandef = params.chandef;
4291                 wdev->beacon_interval = params.beacon_interval;
4292                 wdev->chandef = params.chandef;
4293                 wdev->ssid_len = params.ssid_len;
4294                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4295
4296                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4297                         wdev->conn_owner_nlportid = info->snd_portid;
4298         }
4299         wdev_unlock(wdev);
4300
4301         kfree(params.acl);
4302
4303         return err;
4304 }
4305
4306 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4307 {
4308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309         struct net_device *dev = info->user_ptr[1];
4310         struct wireless_dev *wdev = dev->ieee80211_ptr;
4311         struct cfg80211_beacon_data params;
4312         int err;
4313
4314         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4315             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4316                 return -EOPNOTSUPP;
4317
4318         if (!rdev->ops->change_beacon)
4319                 return -EOPNOTSUPP;
4320
4321         if (!wdev->beacon_interval)
4322                 return -EINVAL;
4323
4324         err = nl80211_parse_beacon(info->attrs, &params);
4325         if (err)
4326                 return err;
4327
4328         wdev_lock(wdev);
4329         err = rdev_change_beacon(rdev, dev, &params);
4330         wdev_unlock(wdev);
4331
4332         return err;
4333 }
4334
4335 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4336 {
4337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4338         struct net_device *dev = info->user_ptr[1];
4339
4340         return cfg80211_stop_ap(rdev, dev, false);
4341 }
4342
4343 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4344         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4345         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4346         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4347         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4348         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4349         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4350 };
4351
4352 static int parse_station_flags(struct genl_info *info,
4353                                enum nl80211_iftype iftype,
4354                                struct station_parameters *params)
4355 {
4356         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4357         struct nlattr *nla;
4358         int flag;
4359
4360         /*
4361          * Try parsing the new attribute first so userspace
4362          * can specify both for older kernels.
4363          */
4364         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4365         if (nla) {
4366                 struct nl80211_sta_flag_update *sta_flags;
4367
4368                 sta_flags = nla_data(nla);
4369                 params->sta_flags_mask = sta_flags->mask;
4370                 params->sta_flags_set = sta_flags->set;
4371                 params->sta_flags_set &= params->sta_flags_mask;
4372                 if ((params->sta_flags_mask |
4373                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4374                         return -EINVAL;
4375                 return 0;
4376         }
4377
4378         /* if present, parse the old attribute */
4379
4380         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4381         if (!nla)
4382                 return 0;
4383
4384         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4385                              sta_flags_policy, info->extack))
4386                 return -EINVAL;
4387
4388         /*
4389          * Only allow certain flags for interface types so that
4390          * other attributes are silently ignored. Remember that
4391          * this is backward compatibility code with old userspace
4392          * and shouldn't be hit in other cases anyway.
4393          */
4394         switch (iftype) {
4395         case NL80211_IFTYPE_AP:
4396         case NL80211_IFTYPE_AP_VLAN:
4397         case NL80211_IFTYPE_P2P_GO:
4398                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4399                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4400                                          BIT(NL80211_STA_FLAG_WME) |
4401                                          BIT(NL80211_STA_FLAG_MFP);
4402                 break;
4403         case NL80211_IFTYPE_P2P_CLIENT:
4404         case NL80211_IFTYPE_STATION:
4405                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4406                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4407                 break;
4408         case NL80211_IFTYPE_MESH_POINT:
4409                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4410                                          BIT(NL80211_STA_FLAG_MFP) |
4411                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4412         default:
4413                 return -EINVAL;
4414         }
4415
4416         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4417                 if (flags[flag]) {
4418                         params->sta_flags_set |= (1<<flag);
4419
4420                         /* no longer support new API additions in old API */
4421                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4422                                 return -EINVAL;
4423                 }
4424         }
4425
4426         return 0;
4427 }
4428
4429 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4430                                  int attr)
4431 {
4432         struct nlattr *rate;
4433         u32 bitrate;
4434         u16 bitrate_compat;
4435         enum nl80211_rate_info rate_flg;
4436
4437         rate = nla_nest_start(msg, attr);
4438         if (!rate)
4439                 return false;
4440
4441         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4442         bitrate = cfg80211_calculate_bitrate(info);
4443         /* report 16-bit bitrate only if we can */
4444         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4445         if (bitrate > 0 &&
4446             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4447                 return false;
4448         if (bitrate_compat > 0 &&
4449             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4450                 return false;
4451
4452         switch (info->bw) {
4453         case RATE_INFO_BW_5:
4454                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4455                 break;
4456         case RATE_INFO_BW_10:
4457                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4458                 break;
4459         default:
4460                 WARN_ON(1);
4461                 /* fall through */
4462         case RATE_INFO_BW_20:
4463                 rate_flg = 0;
4464                 break;
4465         case RATE_INFO_BW_40:
4466                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4467                 break;
4468         case RATE_INFO_BW_80:
4469                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4470                 break;
4471         case RATE_INFO_BW_160:
4472                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4473                 break;
4474         }
4475
4476         if (rate_flg && nla_put_flag(msg, rate_flg))
4477                 return false;
4478
4479         if (info->flags & RATE_INFO_FLAGS_MCS) {
4480                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4481                         return false;
4482                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4483                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4484                         return false;
4485         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4486                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4487                         return false;
4488                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4489                         return false;
4490                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4491                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4492                         return false;
4493         }
4494
4495         nla_nest_end(msg, rate);
4496         return true;
4497 }
4498
4499 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4500                                int id)
4501 {
4502         void *attr;
4503         int i = 0;
4504
4505         if (!mask)
4506                 return true;
4507
4508         attr = nla_nest_start(msg, id);
4509         if (!attr)
4510                 return false;
4511
4512         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4513                 if (!(mask & BIT(i)))
4514                         continue;
4515
4516                 if (nla_put_u8(msg, i, signal[i]))
4517                         return false;
4518         }
4519
4520         nla_nest_end(msg, attr);
4521
4522         return true;
4523 }
4524
4525 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4526                                 u32 seq, int flags,
4527                                 struct cfg80211_registered_device *rdev,
4528                                 struct net_device *dev,
4529                                 const u8 *mac_addr, struct station_info *sinfo)
4530 {
4531         void *hdr;
4532         struct nlattr *sinfoattr, *bss_param;
4533
4534         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4535         if (!hdr)
4536                 return -1;
4537
4538         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4539             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4540             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4541                 goto nla_put_failure;
4542
4543         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4544         if (!sinfoattr)
4545                 goto nla_put_failure;
4546
4547 #define PUT_SINFO(attr, memb, type) do {                                \
4548         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4549         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4550             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4551                              sinfo->memb))                              \
4552                 goto nla_put_failure;                                   \
4553         } while (0)
4554 #define PUT_SINFO_U64(attr, memb) do {                                  \
4555         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4556             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4557                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4558                 goto nla_put_failure;                                   \
4559         } while (0)
4560
4561         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4562         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4563
4564         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4565                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4566             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4567                         (u32)sinfo->rx_bytes))
4568                 goto nla_put_failure;
4569
4570         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4571                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4572             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4573                         (u32)sinfo->tx_bytes))
4574                 goto nla_put_failure;
4575
4576         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4577         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4578         PUT_SINFO(LLID, llid, u16);
4579         PUT_SINFO(PLID, plid, u16);
4580         PUT_SINFO(PLINK_STATE, plink_state, u8);
4581         PUT_SINFO_U64(RX_DURATION, rx_duration);
4582
4583         switch (rdev->wiphy.signal_type) {
4584         case CFG80211_SIGNAL_TYPE_MBM:
4585                 PUT_SINFO(SIGNAL, signal, u8);
4586                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4587                 break;
4588         default:
4589                 break;
4590         }
4591         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4592                 if (!nl80211_put_signal(msg, sinfo->chains,
4593                                         sinfo->chain_signal,
4594                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4595                         goto nla_put_failure;
4596         }
4597         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4598                 if (!nl80211_put_signal(msg, sinfo->chains,
4599                                         sinfo->chain_signal_avg,
4600                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4601                         goto nla_put_failure;
4602         }
4603         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4604                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4605                                           NL80211_STA_INFO_TX_BITRATE))
4606                         goto nla_put_failure;
4607         }
4608         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4609                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4610                                           NL80211_STA_INFO_RX_BITRATE))
4611                         goto nla_put_failure;
4612         }
4613
4614         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4615         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4616         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4617         PUT_SINFO(TX_FAILED, tx_failed, u32);
4618         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4619         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4620         PUT_SINFO(LOCAL_PM, local_pm, u32);
4621         PUT_SINFO(PEER_PM, peer_pm, u32);
4622         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4623
4624         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4625                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4626                 if (!bss_param)
4627                         goto nla_put_failure;
4628
4629                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4630                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4631                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4632                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4633                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4634                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4635                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4636                                sinfo->bss_param.dtim_period) ||
4637                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4638                                 sinfo->bss_param.beacon_interval))
4639                         goto nla_put_failure;
4640
4641                 nla_nest_end(msg, bss_param);
4642         }
4643         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4644             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4645                     sizeof(struct nl80211_sta_flag_update),
4646                     &sinfo->sta_flags))
4647                 goto nla_put_failure;
4648
4649         PUT_SINFO_U64(T_OFFSET, t_offset);
4650         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4651         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4652         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4653         PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4654         if (wiphy_ext_feature_isset(&rdev->wiphy,
4655                                     NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT))
4656                 PUT_SINFO(DATA_ACK_SIGNAL_AVG, avg_ack_signal, s8);
4657
4658 #undef PUT_SINFO
4659 #undef PUT_SINFO_U64
4660
4661         if (sinfo->pertid) {
4662                 struct nlattr *tidsattr;
4663                 int tid;
4664
4665                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4666                 if (!tidsattr)
4667                         goto nla_put_failure;
4668
4669                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4670                         struct cfg80211_tid_stats *tidstats;
4671                         struct nlattr *tidattr;
4672
4673                         tidstats = &sinfo->pertid[tid];
4674
4675                         if (!tidstats->filled)
4676                                 continue;
4677
4678                         tidattr = nla_nest_start(msg, tid + 1);
4679                         if (!tidattr)
4680                                 goto nla_put_failure;
4681
4682 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4683         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4684             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4685                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4686                 goto nla_put_failure;                                   \
4687         } while (0)
4688
4689                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4690                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4691                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4692                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4693
4694 #undef PUT_TIDVAL_U64
4695                         if ((tidstats->filled &
4696                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4697                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4698                                                    NL80211_TID_STATS_TXQ_STATS))
4699                                 goto nla_put_failure;
4700
4701                         nla_nest_end(msg, tidattr);
4702                 }
4703
4704                 nla_nest_end(msg, tidsattr);
4705         }
4706
4707         nla_nest_end(msg, sinfoattr);
4708
4709         if (sinfo->assoc_req_ies_len &&
4710             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4711                     sinfo->assoc_req_ies))
4712                 goto nla_put_failure;
4713
4714         cfg80211_sinfo_release_content(sinfo);
4715         genlmsg_end(msg, hdr);
4716         return 0;
4717
4718  nla_put_failure:
4719         cfg80211_sinfo_release_content(sinfo);
4720         genlmsg_cancel(msg, hdr);
4721         return -EMSGSIZE;
4722 }
4723
4724 static int nl80211_dump_station(struct sk_buff *skb,
4725                                 struct netlink_callback *cb)
4726 {
4727         struct station_info sinfo;
4728         struct cfg80211_registered_device *rdev;
4729         struct wireless_dev *wdev;
4730         u8 mac_addr[ETH_ALEN];
4731         int sta_idx = cb->args[2];
4732         int err;
4733
4734         rtnl_lock();
4735         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4736         if (err)
4737                 goto out_err;
4738
4739         if (!wdev->netdev) {
4740                 err = -EINVAL;
4741                 goto out_err;
4742         }
4743
4744         if (!rdev->ops->dump_station) {
4745                 err = -EOPNOTSUPP;
4746                 goto out_err;
4747         }
4748
4749         while (1) {
4750                 memset(&sinfo, 0, sizeof(sinfo));
4751                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4752                                         mac_addr, &sinfo);
4753                 if (err == -ENOENT)
4754                         break;
4755                 if (err)
4756                         goto out_err;
4757
4758                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4759                                 NETLINK_CB(cb->skb).portid,
4760                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4761                                 rdev, wdev->netdev, mac_addr,
4762                                 &sinfo) < 0)
4763                         goto out;
4764
4765                 sta_idx++;
4766         }
4767
4768  out:
4769         cb->args[2] = sta_idx;
4770         err = skb->len;
4771  out_err:
4772         rtnl_unlock();
4773
4774         return err;
4775 }
4776
4777 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4778 {
4779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4780         struct net_device *dev = info->user_ptr[1];
4781         struct station_info sinfo;
4782         struct sk_buff *msg;
4783         u8 *mac_addr = NULL;
4784         int err;
4785
4786         memset(&sinfo, 0, sizeof(sinfo));
4787
4788         if (!info->attrs[NL80211_ATTR_MAC])
4789                 return -EINVAL;
4790
4791         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4792
4793         if (!rdev->ops->get_station)
4794                 return -EOPNOTSUPP;
4795
4796         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4797         if (err)
4798                 return err;
4799
4800         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4801         if (!msg) {
4802                 cfg80211_sinfo_release_content(&sinfo);
4803                 return -ENOMEM;
4804         }
4805
4806         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4807                                  info->snd_portid, info->snd_seq, 0,
4808                                  rdev, dev, mac_addr, &sinfo) < 0) {
4809                 nlmsg_free(msg);
4810                 return -ENOBUFS;
4811         }
4812
4813         return genlmsg_reply(msg, info);
4814 }
4815
4816 int cfg80211_check_station_change(struct wiphy *wiphy,
4817                                   struct station_parameters *params,
4818                                   enum cfg80211_station_type statype)
4819 {
4820         if (params->listen_interval != -1 &&
4821             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4822                 return -EINVAL;
4823
4824         if (params->support_p2p_ps != -1 &&
4825             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4826                 return -EINVAL;
4827
4828         if (params->aid &&
4829             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4830             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4831                 return -EINVAL;
4832
4833         /* When you run into this, adjust the code below for the new flag */
4834         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4835
4836         switch (statype) {
4837         case CFG80211_STA_MESH_PEER_KERNEL:
4838         case CFG80211_STA_MESH_PEER_USER:
4839                 /*
4840                  * No ignoring the TDLS flag here -- the userspace mesh
4841                  * code doesn't have the bug of including TDLS in the
4842                  * mask everywhere.
4843                  */
4844                 if (params->sta_flags_mask &
4845                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4846                                   BIT(NL80211_STA_FLAG_MFP) |
4847                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4848                         return -EINVAL;
4849                 break;
4850         case CFG80211_STA_TDLS_PEER_SETUP:
4851         case CFG80211_STA_TDLS_PEER_ACTIVE:
4852                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4853                         return -EINVAL;
4854                 /* ignore since it can't change */
4855                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4856                 break;
4857         default:
4858                 /* disallow mesh-specific things */
4859                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4860                         return -EINVAL;
4861                 if (params->local_pm)
4862                         return -EINVAL;
4863                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4864                         return -EINVAL;
4865         }
4866
4867         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4868             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4869                 /* TDLS can't be set, ... */
4870                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4871                         return -EINVAL;
4872                 /*
4873                  * ... but don't bother the driver with it. This works around
4874                  * a hostapd/wpa_supplicant issue -- it always includes the
4875                  * TLDS_PEER flag in the mask even for AP mode.
4876                  */
4877                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4878         }
4879
4880         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4881             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4882                 /* reject other things that can't change */
4883                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4884                         return -EINVAL;
4885                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4886                         return -EINVAL;
4887                 if (params->supported_rates)
4888                         return -EINVAL;
4889                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4890                         return -EINVAL;
4891         }
4892
4893         if (statype != CFG80211_STA_AP_CLIENT &&
4894             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4895                 if (params->vlan)
4896                         return -EINVAL;
4897         }
4898
4899         switch (statype) {
4900         case CFG80211_STA_AP_MLME_CLIENT:
4901                 /* Use this only for authorizing/unauthorizing a station */
4902                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4903                         return -EOPNOTSUPP;
4904                 break;
4905         case CFG80211_STA_AP_CLIENT:
4906         case CFG80211_STA_AP_CLIENT_UNASSOC:
4907                 /* accept only the listed bits */
4908                 if (params->sta_flags_mask &
4909                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4910                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4911                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4912                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4913                                   BIT(NL80211_STA_FLAG_WME) |
4914                                   BIT(NL80211_STA_FLAG_MFP)))
4915                         return -EINVAL;
4916
4917                 /* but authenticated/associated only if driver handles it */
4918                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4919                     params->sta_flags_mask &
4920                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4921                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4922                         return -EINVAL;
4923                 break;
4924         case CFG80211_STA_IBSS:
4925         case CFG80211_STA_AP_STA:
4926                 /* reject any changes other than AUTHORIZED */
4927                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4928                         return -EINVAL;
4929                 break;
4930         case CFG80211_STA_TDLS_PEER_SETUP:
4931                 /* reject any changes other than AUTHORIZED or WME */
4932                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4933                                                BIT(NL80211_STA_FLAG_WME)))
4934                         return -EINVAL;
4935                 /* force (at least) rates when authorizing */
4936                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4937                     !params->supported_rates)
4938                         return -EINVAL;
4939                 break;
4940         case CFG80211_STA_TDLS_PEER_ACTIVE:
4941                 /* reject any changes */
4942                 return -EINVAL;
4943         case CFG80211_STA_MESH_PEER_KERNEL:
4944                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4945                         return -EINVAL;
4946                 break;
4947         case CFG80211_STA_MESH_PEER_USER:
4948                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4949                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4950                         return -EINVAL;
4951                 break;
4952         }
4953
4954         /*
4955          * Older kernel versions ignored this attribute entirely, so don't
4956          * reject attempts to update it but mark it as unused instead so the
4957          * driver won't look at the data.
4958          */
4959         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4960             statype != CFG80211_STA_TDLS_PEER_SETUP)
4961                 params->opmode_notif_used = false;
4962
4963         return 0;
4964 }
4965 EXPORT_SYMBOL(cfg80211_check_station_change);
4966
4967 /*
4968  * Get vlan interface making sure it is running and on the right wiphy.
4969  */
4970 static struct net_device *get_vlan(struct genl_info *info,
4971                                    struct cfg80211_registered_device *rdev)
4972 {
4973         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4974         struct net_device *v;
4975         int ret;
4976
4977         if (!vlanattr)
4978                 return NULL;
4979
4980         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4981         if (!v)
4982                 return ERR_PTR(-ENODEV);
4983
4984         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4985                 ret = -EINVAL;
4986                 goto error;
4987         }
4988
4989         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4990             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4991             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4992                 ret = -EINVAL;
4993                 goto error;
4994         }
4995
4996         if (!netif_running(v)) {
4997                 ret = -ENETDOWN;
4998                 goto error;
4999         }
5000
5001         return v;
5002  error:
5003         dev_put(v);
5004         return ERR_PTR(ret);
5005 }
5006
5007 static const struct nla_policy
5008 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5009         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5010         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5011 };
5012
5013 static int nl80211_parse_sta_wme(struct genl_info *info,
5014                                  struct station_parameters *params)
5015 {
5016         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5017         struct nlattr *nla;
5018         int err;
5019
5020         /* parse WME attributes if present */
5021         if (!info->attrs[NL80211_ATTR_STA_WME])
5022                 return 0;
5023
5024         nla = info->attrs[NL80211_ATTR_STA_WME];
5025         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5026                                nl80211_sta_wme_policy, info->extack);
5027         if (err)
5028                 return err;
5029
5030         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5031                 params->uapsd_queues = nla_get_u8(
5032                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5033         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5034                 return -EINVAL;
5035
5036         if (tb[NL80211_STA_WME_MAX_SP])
5037                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5038
5039         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5040                 return -EINVAL;
5041
5042         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5043
5044         return 0;
5045 }
5046
5047 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5048                                       struct station_parameters *params)
5049 {
5050         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5051                 params->supported_channels =
5052                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5053                 params->supported_channels_len =
5054                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5055                 /*
5056                  * Need to include at least one (first channel, number of
5057                  * channels) tuple for each subband, and must have proper
5058                  * tuples for the rest of the data as well.
5059                  */
5060                 if (params->supported_channels_len < 2)
5061                         return -EINVAL;
5062                 if (params->supported_channels_len % 2)
5063                         return -EINVAL;
5064         }
5065
5066         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5067                 params->supported_oper_classes =
5068                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5069                 params->supported_oper_classes_len =
5070                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5071                 /*
5072                  * The value of the Length field of the Supported Operating
5073                  * Classes element is between 2 and 253.
5074                  */
5075                 if (params->supported_oper_classes_len < 2 ||
5076                     params->supported_oper_classes_len > 253)
5077                         return -EINVAL;
5078         }
5079         return 0;
5080 }
5081
5082 static int nl80211_set_station_tdls(struct genl_info *info,
5083                                     struct station_parameters *params)
5084 {
5085         int err;
5086         /* Dummy STA entry gets updated once the peer capabilities are known */
5087         if (info->attrs[NL80211_ATTR_PEER_AID])
5088                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5089         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5090                 params->ht_capa =
5091                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5092         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5093                 params->vht_capa =
5094                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5095
5096         err = nl80211_parse_sta_channel_info(info, params);
5097         if (err)
5098                 return err;
5099
5100         return nl80211_parse_sta_wme(info, params);
5101 }
5102
5103 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5104 {
5105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5106         struct net_device *dev = info->user_ptr[1];
5107         struct station_parameters params;
5108         u8 *mac_addr;
5109         int err;
5110
5111         memset(&params, 0, sizeof(params));
5112
5113         if (!rdev->ops->change_station)
5114                 return -EOPNOTSUPP;
5115
5116         /*
5117          * AID and listen_interval properties can be set only for unassociated
5118          * station. Include these parameters here and will check them in
5119          * cfg80211_check_station_change().
5120          */
5121         if (info->attrs[NL80211_ATTR_STA_AID])
5122                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5123
5124         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5125                 params.listen_interval =
5126                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5127         else
5128                 params.listen_interval = -1;
5129
5130         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5131                 u8 tmp;
5132
5133                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5134                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5135                         return -EINVAL;
5136
5137                 params.support_p2p_ps = tmp;
5138         } else {
5139                 params.support_p2p_ps = -1;
5140         }
5141
5142         if (!info->attrs[NL80211_ATTR_MAC])
5143                 return -EINVAL;
5144
5145         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5146
5147         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5148                 params.supported_rates =
5149                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5150                 params.supported_rates_len =
5151                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5152         }
5153
5154         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5155                 params.capability =
5156                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5157                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5158         }
5159
5160         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5161                 params.ext_capab =
5162                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5163                 params.ext_capab_len =
5164                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5165         }
5166
5167         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5168                 return -EINVAL;
5169
5170         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5171                 params.plink_action =
5172                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5173                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5174                         return -EINVAL;
5175         }
5176
5177         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5178                 params.plink_state =
5179                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5180                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5181                         return -EINVAL;
5182                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5183                         params.peer_aid = nla_get_u16(
5184                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5185                         if (params.peer_aid > IEEE80211_MAX_AID)
5186                                 return -EINVAL;
5187                 }
5188                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5189         }
5190
5191         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5192                 enum nl80211_mesh_power_mode pm = nla_get_u32(
5193                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5194
5195                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5196                     pm > NL80211_MESH_POWER_MAX)
5197                         return -EINVAL;
5198
5199                 params.local_pm = pm;
5200         }
5201
5202         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5203                 params.opmode_notif_used = true;
5204                 params.opmode_notif =
5205                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5206         }
5207
5208         /* Include parameters for TDLS peer (will check later) */
5209         err = nl80211_set_station_tdls(info, &params);
5210         if (err)
5211                 return err;
5212
5213         params.vlan = get_vlan(info, rdev);
5214         if (IS_ERR(params.vlan))
5215                 return PTR_ERR(params.vlan);
5216
5217         switch (dev->ieee80211_ptr->iftype) {
5218         case NL80211_IFTYPE_AP:
5219         case NL80211_IFTYPE_AP_VLAN:
5220         case NL80211_IFTYPE_P2P_GO:
5221         case NL80211_IFTYPE_P2P_CLIENT:
5222         case NL80211_IFTYPE_STATION:
5223         case NL80211_IFTYPE_ADHOC:
5224         case NL80211_IFTYPE_MESH_POINT:
5225                 break;
5226         default:
5227                 err = -EOPNOTSUPP;
5228                 goto out_put_vlan;
5229         }
5230
5231         /* driver will call cfg80211_check_station_change() */
5232         err = rdev_change_station(rdev, dev, mac_addr, &params);
5233
5234  out_put_vlan:
5235         if (params.vlan)
5236                 dev_put(params.vlan);
5237
5238         return err;
5239 }
5240
5241 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5242 {
5243         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5244         int err;
5245         struct net_device *dev = info->user_ptr[1];
5246         struct station_parameters params;
5247         u8 *mac_addr = NULL;
5248         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5249                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5250
5251         memset(&params, 0, sizeof(params));
5252
5253         if (!rdev->ops->add_station)
5254                 return -EOPNOTSUPP;
5255
5256         if (!info->attrs[NL80211_ATTR_MAC])
5257                 return -EINVAL;
5258
5259         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5260                 return -EINVAL;
5261
5262         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5263                 return -EINVAL;
5264
5265         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5266             !info->attrs[NL80211_ATTR_PEER_AID])
5267                 return -EINVAL;
5268
5269         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5270         params.supported_rates =
5271                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5272         params.supported_rates_len =
5273                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5274         params.listen_interval =
5275                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5276
5277         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5278                 u8 tmp;
5279
5280                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5281                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5282                         return -EINVAL;
5283
5284                 params.support_p2p_ps = tmp;
5285         } else {
5286                 /*
5287                  * if not specified, assume it's supported for P2P GO interface,
5288                  * and is NOT supported for AP interface
5289                  */
5290                 params.support_p2p_ps =
5291                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5292         }
5293
5294         if (info->attrs[NL80211_ATTR_PEER_AID])
5295                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5296         else
5297                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5298         if (!params.aid || params.aid > IEEE80211_MAX_AID)
5299                 return -EINVAL;
5300
5301         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5302                 params.capability =
5303                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5304                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5305         }
5306
5307         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5308                 params.ext_capab =
5309                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5310                 params.ext_capab_len =
5311                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5312         }
5313
5314         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5315                 params.ht_capa =
5316                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5317
5318         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5319                 params.vht_capa =
5320                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5321
5322         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5323                 params.opmode_notif_used = true;
5324                 params.opmode_notif =
5325                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5326         }
5327
5328         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5329                 params.plink_action =
5330                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5331                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5332                         return -EINVAL;
5333         }
5334
5335         err = nl80211_parse_sta_channel_info(info, &params);
5336         if (err)
5337                 return err;
5338
5339         err = nl80211_parse_sta_wme(info, &params);
5340         if (err)
5341                 return err;
5342
5343         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5344                 return -EINVAL;
5345
5346         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5347          * as userspace might just pass through the capabilities from the IEs
5348          * directly, rather than enforcing this restriction and returning an
5349          * error in this case.
5350          */
5351         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5352                 params.ht_capa = NULL;
5353                 params.vht_capa = NULL;
5354         }
5355
5356         /* When you run into this, adjust the code below for the new flag */
5357         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5358
5359         switch (dev->ieee80211_ptr->iftype) {
5360         case NL80211_IFTYPE_AP:
5361         case NL80211_IFTYPE_AP_VLAN:
5362         case NL80211_IFTYPE_P2P_GO:
5363                 /* ignore WME attributes if iface/sta is not capable */
5364                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5365                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5366                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5367
5368                 /* TDLS peers cannot be added */
5369                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5370                     info->attrs[NL80211_ATTR_PEER_AID])
5371                         return -EINVAL;
5372                 /* but don't bother the driver with it */
5373                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5374
5375                 /* allow authenticated/associated only if driver handles it */
5376                 if (!(rdev->wiphy.features &
5377                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5378                     params.sta_flags_mask & auth_assoc)
5379                         return -EINVAL;
5380
5381                 /* Older userspace, or userspace wanting to be compatible with
5382                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5383                  * and assoc flags in the mask, but assumes the station will be
5384                  * added as associated anyway since this was the required driver
5385                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5386                  * introduced.
5387                  * In order to not bother drivers with this quirk in the API
5388                  * set the flags in both the mask and set for new stations in
5389                  * this case.
5390                  */
5391                 if (!(params.sta_flags_mask & auth_assoc)) {
5392                         params.sta_flags_mask |= auth_assoc;
5393                         params.sta_flags_set |= auth_assoc;
5394                 }
5395
5396                 /* must be last in here for error handling */
5397                 params.vlan = get_vlan(info, rdev);
5398                 if (IS_ERR(params.vlan))
5399                         return PTR_ERR(params.vlan);
5400                 break;
5401         case NL80211_IFTYPE_MESH_POINT:
5402                 /* ignore uAPSD data */
5403                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5404
5405                 /* associated is disallowed */
5406                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5407                         return -EINVAL;
5408                 /* TDLS peers cannot be added */
5409                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5410                     info->attrs[NL80211_ATTR_PEER_AID])
5411                         return -EINVAL;
5412                 break;
5413         case NL80211_IFTYPE_STATION:
5414         case NL80211_IFTYPE_P2P_CLIENT:
5415                 /* ignore uAPSD data */
5416                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5417
5418                 /* these are disallowed */
5419                 if (params.sta_flags_mask &
5420                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5421                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5422                         return -EINVAL;
5423                 /* Only TDLS peers can be added */
5424                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5425                         return -EINVAL;
5426                 /* Can only add if TDLS ... */
5427                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5428                         return -EOPNOTSUPP;
5429                 /* ... with external setup is supported */
5430                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5431                         return -EOPNOTSUPP;
5432                 /*
5433                  * Older wpa_supplicant versions always mark the TDLS peer
5434                  * as authorized, but it shouldn't yet be.
5435                  */
5436                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5437                 break;
5438         default:
5439                 return -EOPNOTSUPP;
5440         }
5441
5442         /* be aware of params.vlan when changing code here */
5443
5444         err = rdev_add_station(rdev, dev, mac_addr, &params);
5445
5446         if (params.vlan)
5447                 dev_put(params.vlan);
5448         return err;
5449 }
5450
5451 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5452 {
5453         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5454         struct net_device *dev = info->user_ptr[1];
5455         struct station_del_parameters params;
5456
5457         memset(&params, 0, sizeof(params));
5458
5459         if (info->attrs[NL80211_ATTR_MAC])
5460                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5461
5462         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5463             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5464             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5465             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5466                 return -EINVAL;
5467
5468         if (!rdev->ops->del_station)
5469                 return -EOPNOTSUPP;
5470
5471         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5472                 params.subtype =
5473                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5474                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5475                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5476                         return -EINVAL;
5477         } else {
5478                 /* Default to Deauthentication frame */
5479                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5480         }
5481
5482         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5483                 params.reason_code =
5484                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5485                 if (params.reason_code == 0)
5486                         return -EINVAL; /* 0 is reserved */
5487         } else {
5488                 /* Default to reason code 2 */
5489                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5490         }
5491
5492         return rdev_del_station(rdev, dev, &params);
5493 }
5494
5495 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5496                                 int flags, struct net_device *dev,
5497                                 u8 *dst, u8 *next_hop,
5498                                 struct mpath_info *pinfo)
5499 {
5500         void *hdr;
5501         struct nlattr *pinfoattr;
5502
5503         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5504         if (!hdr)
5505                 return -1;
5506
5507         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5508             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5509             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5510             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5511                 goto nla_put_failure;
5512
5513         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5514         if (!pinfoattr)
5515                 goto nla_put_failure;
5516         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5517             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5518                         pinfo->frame_qlen))
5519                 goto nla_put_failure;
5520         if (((pinfo->filled & MPATH_INFO_SN) &&
5521              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5522             ((pinfo->filled & MPATH_INFO_METRIC) &&
5523              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5524                          pinfo->metric)) ||
5525             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5526              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5527                          pinfo->exptime)) ||
5528             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5529              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5530                         pinfo->flags)) ||
5531             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5532              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5533                          pinfo->discovery_timeout)) ||
5534             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5535              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5536                         pinfo->discovery_retries)))
5537                 goto nla_put_failure;
5538
5539         nla_nest_end(msg, pinfoattr);
5540
5541         genlmsg_end(msg, hdr);
5542         return 0;
5543
5544  nla_put_failure:
5545         genlmsg_cancel(msg, hdr);
5546         return -EMSGSIZE;
5547 }
5548
5549 static int nl80211_dump_mpath(struct sk_buff *skb,
5550                               struct netlink_callback *cb)
5551 {
5552         struct mpath_info pinfo;
5553         struct cfg80211_registered_device *rdev;
5554         struct wireless_dev *wdev;
5555         u8 dst[ETH_ALEN];
5556         u8 next_hop[ETH_ALEN];
5557         int path_idx = cb->args[2];
5558         int err;
5559
5560         rtnl_lock();
5561         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5562         if (err)
5563                 goto out_err;
5564
5565         if (!rdev->ops->dump_mpath) {
5566                 err = -EOPNOTSUPP;
5567                 goto out_err;
5568         }
5569
5570         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5571                 err = -EOPNOTSUPP;
5572                 goto out_err;
5573         }
5574
5575         while (1) {
5576                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5577                                       next_hop, &pinfo);
5578                 if (err == -ENOENT)
5579                         break;
5580                 if (err)
5581                         goto out_err;
5582
5583                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5584                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5585                                        wdev->netdev, dst, next_hop,
5586                                        &pinfo) < 0)
5587                         goto out;
5588
5589                 path_idx++;
5590         }
5591
5592  out:
5593         cb->args[2] = path_idx;
5594         err = skb->len;
5595  out_err:
5596         rtnl_unlock();
5597         return err;
5598 }
5599
5600 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5601 {
5602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5603         int err;
5604         struct net_device *dev = info->user_ptr[1];
5605         struct mpath_info pinfo;
5606         struct sk_buff *msg;
5607         u8 *dst = NULL;
5608         u8 next_hop[ETH_ALEN];
5609
5610         memset(&pinfo, 0, sizeof(pinfo));
5611
5612         if (!info->attrs[NL80211_ATTR_MAC])
5613                 return -EINVAL;
5614
5615         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5616
5617         if (!rdev->ops->get_mpath)
5618                 return -EOPNOTSUPP;
5619
5620         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5621                 return -EOPNOTSUPP;
5622
5623         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5624         if (err)
5625                 return err;
5626
5627         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5628         if (!msg)
5629                 return -ENOMEM;
5630
5631         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5632                                  dev, dst, next_hop, &pinfo) < 0) {
5633                 nlmsg_free(msg);
5634                 return -ENOBUFS;
5635         }
5636
5637         return genlmsg_reply(msg, info);
5638 }
5639
5640 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5641 {
5642         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5643         struct net_device *dev = info->user_ptr[1];
5644         u8 *dst = NULL;
5645         u8 *next_hop = NULL;
5646
5647         if (!info->attrs[NL80211_ATTR_MAC])
5648                 return -EINVAL;
5649
5650         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5651                 return -EINVAL;
5652
5653         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5654         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5655
5656         if (!rdev->ops->change_mpath)
5657                 return -EOPNOTSUPP;
5658
5659         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5660                 return -EOPNOTSUPP;
5661
5662         return rdev_change_mpath(rdev, dev, dst, next_hop);
5663 }
5664
5665 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5666 {
5667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5668         struct net_device *dev = info->user_ptr[1];
5669         u8 *dst = NULL;
5670         u8 *next_hop = NULL;
5671
5672         if (!info->attrs[NL80211_ATTR_MAC])
5673                 return -EINVAL;
5674
5675         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5676                 return -EINVAL;
5677
5678         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5679         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5680
5681         if (!rdev->ops->add_mpath)
5682                 return -EOPNOTSUPP;
5683
5684         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5685                 return -EOPNOTSUPP;
5686
5687         return rdev_add_mpath(rdev, dev, dst, next_hop);
5688 }
5689
5690 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5691 {
5692         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5693         struct net_device *dev = info->user_ptr[1];
5694         u8 *dst = NULL;
5695
5696         if (info->attrs[NL80211_ATTR_MAC])
5697                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5698
5699         if (!rdev->ops->del_mpath)
5700                 return -EOPNOTSUPP;
5701
5702         return rdev_del_mpath(rdev, dev, dst);
5703 }
5704
5705 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5706 {
5707         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5708         int err;
5709         struct net_device *dev = info->user_ptr[1];
5710         struct mpath_info pinfo;
5711         struct sk_buff *msg;
5712         u8 *dst = NULL;
5713         u8 mpp[ETH_ALEN];
5714
5715         memset(&pinfo, 0, sizeof(pinfo));
5716
5717         if (!info->attrs[NL80211_ATTR_MAC])
5718                 return -EINVAL;
5719
5720         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5721
5722         if (!rdev->ops->get_mpp)
5723                 return -EOPNOTSUPP;
5724
5725         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5726                 return -EOPNOTSUPP;
5727
5728         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5729         if (err)
5730                 return err;
5731
5732         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5733         if (!msg)
5734                 return -ENOMEM;
5735
5736         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5737                                dev, dst, mpp, &pinfo) < 0) {
5738                 nlmsg_free(msg);
5739                 return -ENOBUFS;
5740         }
5741
5742         return genlmsg_reply(msg, info);
5743 }
5744
5745 static int nl80211_dump_mpp(struct sk_buff *skb,
5746                             struct netlink_callback *cb)
5747 {
5748         struct mpath_info pinfo;
5749         struct cfg80211_registered_device *rdev;
5750         struct wireless_dev *wdev;
5751         u8 dst[ETH_ALEN];
5752         u8 mpp[ETH_ALEN];
5753         int path_idx = cb->args[2];
5754         int err;
5755
5756         rtnl_lock();
5757         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5758         if (err)
5759                 goto out_err;
5760
5761         if (!rdev->ops->dump_mpp) {
5762                 err = -EOPNOTSUPP;
5763                 goto out_err;
5764         }
5765
5766         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5767                 err = -EOPNOTSUPP;
5768                 goto out_err;
5769         }
5770
5771         while (1) {
5772                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5773                                     mpp, &pinfo);
5774                 if (err == -ENOENT)
5775                         break;
5776                 if (err)
5777                         goto out_err;
5778
5779                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5780                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5781                                        wdev->netdev, dst, mpp,
5782                                        &pinfo) < 0)
5783                         goto out;
5784
5785                 path_idx++;
5786         }
5787
5788  out:
5789         cb->args[2] = path_idx;
5790         err = skb->len;
5791  out_err:
5792         rtnl_unlock();
5793         return err;
5794 }
5795
5796 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5797 {
5798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5799         struct net_device *dev = info->user_ptr[1];
5800         struct wireless_dev *wdev = dev->ieee80211_ptr;
5801         struct bss_parameters params;
5802         int err;
5803
5804         memset(&params, 0, sizeof(params));
5805         /* default to not changing parameters */
5806         params.use_cts_prot = -1;
5807         params.use_short_preamble = -1;
5808         params.use_short_slot_time = -1;
5809         params.ap_isolate = -1;
5810         params.ht_opmode = -1;
5811         params.p2p_ctwindow = -1;
5812         params.p2p_opp_ps = -1;
5813
5814         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5815                 params.use_cts_prot =
5816                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5817         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5818                 params.use_short_preamble =
5819                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5820         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5821                 params.use_short_slot_time =
5822                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5823         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5824                 params.basic_rates =
5825                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5826                 params.basic_rates_len =
5827                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5828         }
5829         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5830                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5831         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5832                 params.ht_opmode =
5833                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5834
5835         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5836                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5837                         return -EINVAL;
5838                 params.p2p_ctwindow =
5839                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5840                 if (params.p2p_ctwindow < 0)
5841                         return -EINVAL;
5842                 if (params.p2p_ctwindow != 0 &&
5843                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5844                         return -EINVAL;
5845         }
5846
5847         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5848                 u8 tmp;
5849
5850                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5851                         return -EINVAL;
5852                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5853                 if (tmp > 1)
5854                         return -EINVAL;
5855                 params.p2p_opp_ps = tmp;
5856                 if (params.p2p_opp_ps &&
5857                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5858                         return -EINVAL;
5859         }
5860
5861         if (!rdev->ops->change_bss)
5862                 return -EOPNOTSUPP;
5863
5864         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5865             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5866                 return -EOPNOTSUPP;
5867
5868         wdev_lock(wdev);
5869         err = rdev_change_bss(rdev, dev, &params);
5870         wdev_unlock(wdev);
5871
5872         return err;
5873 }
5874
5875 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5876 {
5877         char *data = NULL;
5878         bool is_indoor;
5879         enum nl80211_user_reg_hint_type user_reg_hint_type;
5880         u32 owner_nlportid;
5881
5882         /*
5883          * You should only get this when cfg80211 hasn't yet initialized
5884          * completely when built-in to the kernel right between the time
5885          * window between nl80211_init() and regulatory_init(), if that is
5886          * even possible.
5887          */
5888         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5889                 return -EINPROGRESS;
5890
5891         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5892                 user_reg_hint_type =
5893                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5894         else
5895                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5896
5897         switch (user_reg_hint_type) {
5898         case NL80211_USER_REG_HINT_USER:
5899         case NL80211_USER_REG_HINT_CELL_BASE:
5900                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5901                         return -EINVAL;
5902
5903                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5904                 return regulatory_hint_user(data, user_reg_hint_type);
5905         case NL80211_USER_REG_HINT_INDOOR:
5906                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5907                         owner_nlportid = info->snd_portid;
5908                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5909                 } else {
5910                         owner_nlportid = 0;
5911                         is_indoor = true;
5912                 }
5913
5914                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5915         default:
5916                 return -EINVAL;
5917         }
5918 }
5919
5920 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5921 {
5922         return reg_reload_regdb();
5923 }
5924
5925 static int nl80211_get_mesh_config(struct sk_buff *skb,
5926                                    struct genl_info *info)
5927 {
5928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5929         struct net_device *dev = info->user_ptr[1];
5930         struct wireless_dev *wdev = dev->ieee80211_ptr;
5931         struct mesh_config cur_params;
5932         int err = 0;
5933         void *hdr;
5934         struct nlattr *pinfoattr;
5935         struct sk_buff *msg;
5936
5937         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5938                 return -EOPNOTSUPP;
5939
5940         if (!rdev->ops->get_mesh_config)
5941                 return -EOPNOTSUPP;
5942
5943         wdev_lock(wdev);
5944         /* If not connected, get default parameters */
5945         if (!wdev->mesh_id_len)
5946                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5947         else
5948                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5949         wdev_unlock(wdev);
5950
5951         if (err)
5952                 return err;
5953
5954         /* Draw up a netlink message to send back */
5955         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5956         if (!msg)
5957                 return -ENOMEM;
5958         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5959                              NL80211_CMD_GET_MESH_CONFIG);
5960         if (!hdr)
5961                 goto out;
5962         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5963         if (!pinfoattr)
5964                 goto nla_put_failure;
5965         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5966             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5967                         cur_params.dot11MeshRetryTimeout) ||
5968             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5969                         cur_params.dot11MeshConfirmTimeout) ||
5970             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5971                         cur_params.dot11MeshHoldingTimeout) ||
5972             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5973                         cur_params.dot11MeshMaxPeerLinks) ||
5974             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5975                        cur_params.dot11MeshMaxRetries) ||
5976             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5977                        cur_params.dot11MeshTTL) ||
5978             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5979                        cur_params.element_ttl) ||
5980             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5981                        cur_params.auto_open_plinks) ||
5982             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5983                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5984             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5985                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5986             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5987                         cur_params.path_refresh_time) ||
5988             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5989                         cur_params.min_discovery_timeout) ||
5990             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5991                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5992             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5993                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5994             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5995                         cur_params.dot11MeshHWMPperrMinInterval) ||
5996             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5997                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5998             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5999                        cur_params.dot11MeshHWMPRootMode) ||
6000             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6001                         cur_params.dot11MeshHWMPRannInterval) ||
6002             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6003                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6004             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6005                        cur_params.dot11MeshForwarding) ||
6006             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6007                         cur_params.rssi_threshold) ||
6008             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6009                         cur_params.ht_opmode) ||
6010             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6011                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6012             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6013                         cur_params.dot11MeshHWMProotInterval) ||
6014             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6015                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6016             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6017                         cur_params.power_mode) ||
6018             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6019                         cur_params.dot11MeshAwakeWindowDuration) ||
6020             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6021                         cur_params.plink_timeout))
6022                 goto nla_put_failure;
6023         nla_nest_end(msg, pinfoattr);
6024         genlmsg_end(msg, hdr);
6025         return genlmsg_reply(msg, info);
6026
6027  nla_put_failure:
6028  out:
6029         nlmsg_free(msg);
6030         return -ENOBUFS;
6031 }
6032
6033 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6034         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
6035         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
6036         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
6037         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
6038         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
6039         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
6040         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
6041         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
6042         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
6043         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6044         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6045         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
6046         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6047         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
6048         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
6049         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
6050         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
6051         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
6052         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
6053         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
6054         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
6055         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6056         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6057         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
6058         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
6059         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
6060         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6061         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6062 };
6063
6064 static const struct nla_policy
6065         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6066         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6067         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6068         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6069         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6070         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6071         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6072         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
6073                                     .len = IEEE80211_MAX_DATA_LEN },
6074         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6075 };
6076
6077 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
6078 {
6079         u8 val = nla_get_u8(nla);
6080         if (val < min || val > max)
6081                 return -EINVAL;
6082         *out = val;
6083         return 0;
6084 }
6085
6086 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
6087 {
6088         u8 val = nla_get_u8(nla);
6089         if (val < min || val > max)
6090                 return -EINVAL;
6091         *out = val;
6092         return 0;
6093 }
6094
6095 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
6096 {
6097         u16 val = nla_get_u16(nla);
6098         if (val < min || val > max)
6099                 return -EINVAL;
6100         *out = val;
6101         return 0;
6102 }
6103
6104 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
6105 {
6106         u32 val = nla_get_u32(nla);
6107         if (val < min || val > max)
6108                 return -EINVAL;
6109         *out = val;
6110         return 0;
6111 }
6112
6113 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
6114 {
6115         s32 val = nla_get_s32(nla);
6116         if (val < min || val > max)
6117                 return -EINVAL;
6118         *out = val;
6119         return 0;
6120 }
6121
6122 static int nl80211_check_power_mode(const struct nlattr *nla,
6123                                     enum nl80211_mesh_power_mode min,
6124                                     enum nl80211_mesh_power_mode max,
6125                                     enum nl80211_mesh_power_mode *out)
6126 {
6127         u32 val = nla_get_u32(nla);
6128         if (val < min || val > max)
6129                 return -EINVAL;
6130         *out = val;
6131         return 0;
6132 }
6133
6134 static int nl80211_parse_mesh_config(struct genl_info *info,
6135                                      struct mesh_config *cfg,
6136                                      u32 *mask_out)
6137 {
6138         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6139         u32 mask = 0;
6140         u16 ht_opmode;
6141
6142 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
6143 do {                                                                        \
6144         if (tb[attr]) {                                                     \
6145                 if (fn(tb[attr], min, max, &cfg->param))                    \
6146                         return -EINVAL;                                     \
6147                 mask |= (1 << (attr - 1));                                  \
6148         }                                                                   \
6149 } while (0)
6150
6151         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6152                 return -EINVAL;
6153         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6154                              info->attrs[NL80211_ATTR_MESH_CONFIG],
6155                              nl80211_meshconf_params_policy, info->extack))
6156                 return -EINVAL;
6157
6158         /* This makes sure that there aren't more than 32 mesh config
6159          * parameters (otherwise our bitfield scheme would not work.) */
6160         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6161
6162         /* Fill in the params struct */
6163         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
6164                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
6165                                   nl80211_check_u16);
6166         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
6167                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6168                                   nl80211_check_u16);
6169         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
6170                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
6171                                   nl80211_check_u16);
6172         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
6173                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
6174                                   nl80211_check_u16);
6175         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6176                                   mask, NL80211_MESHCONF_MAX_RETRIES,
6177                                   nl80211_check_u8);
6178         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6179                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6180         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6181                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
6182                                   nl80211_check_u8);
6183         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6184                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6185                                   nl80211_check_bool);
6186         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6187                                   1, 255, mask,
6188                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6189                                   nl80211_check_u32);
6190         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6191                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6192                                   nl80211_check_u8);
6193         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6194                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6195                                   nl80211_check_u32);
6196         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6197                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6198                                   nl80211_check_u16);
6199         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6200                                   1, 65535, mask,
6201                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6202                                   nl80211_check_u32);
6203         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6204                                   1, 65535, mask,
6205                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6206                                   nl80211_check_u16);
6207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6208                                   1, 65535, mask,
6209                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6210                                   nl80211_check_u16);
6211         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6212                                   dot11MeshHWMPnetDiameterTraversalTime,
6213                                   1, 65535, mask,
6214                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6215                                   nl80211_check_u16);
6216         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6217                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6218                                   nl80211_check_u8);
6219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6220                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6221                                   nl80211_check_u16);
6222         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6223                                   dot11MeshGateAnnouncementProtocol, 0, 1,
6224                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6225                                   nl80211_check_bool);
6226         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6227                                   mask, NL80211_MESHCONF_FORWARDING,
6228                                   nl80211_check_bool);
6229         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6230                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6231                                   nl80211_check_s32);
6232         /*
6233          * Check HT operation mode based on
6234          * IEEE 802.11 2012 8.4.2.59 HT Operation element.
6235          */
6236         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6237                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6238
6239                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6240                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6241                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6242                         return -EINVAL;
6243
6244                 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6245                     (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6246                         return -EINVAL;
6247
6248                 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6249                 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6250                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6251                         if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6252                                 return -EINVAL;
6253                         break;
6254                 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6255                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6256                         if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6257                                 return -EINVAL;
6258                         break;
6259                 }
6260                 cfg->ht_opmode = ht_opmode;
6261                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6262         }
6263         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6264                                   1, 65535, mask,
6265                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6266                                   nl80211_check_u32);
6267         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6268                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6269                                   nl80211_check_u16);
6270         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6271                                   dot11MeshHWMPconfirmationInterval,
6272                                   1, 65535, mask,
6273                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6274                                   nl80211_check_u16);
6275         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6276                                   NL80211_MESH_POWER_ACTIVE,
6277                                   NL80211_MESH_POWER_MAX,
6278                                   mask, NL80211_MESHCONF_POWER_MODE,
6279                                   nl80211_check_power_mode);
6280         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6281                                   0, 65535, mask,
6282                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6283         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6284                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6285                                   nl80211_check_u32);
6286         if (mask_out)
6287                 *mask_out = mask;
6288
6289         return 0;
6290
6291 #undef FILL_IN_MESH_PARAM_IF_SET
6292 }
6293
6294 static int nl80211_parse_mesh_setup(struct genl_info *info,
6295                                      struct mesh_setup *setup)
6296 {
6297         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6298         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6299
6300         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6301                 return -EINVAL;
6302         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6303                              info->attrs[NL80211_ATTR_MESH_SETUP],
6304                              nl80211_mesh_setup_params_policy, info->extack))
6305                 return -EINVAL;
6306
6307         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6308                 setup->sync_method =
6309                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6310                  IEEE80211_SYNC_METHOD_VENDOR :
6311                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6312
6313         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6314                 setup->path_sel_proto =
6315                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6316                  IEEE80211_PATH_PROTOCOL_VENDOR :
6317                  IEEE80211_PATH_PROTOCOL_HWMP;
6318
6319         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6320                 setup->path_metric =
6321                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6322                  IEEE80211_PATH_METRIC_VENDOR :
6323                  IEEE80211_PATH_METRIC_AIRTIME;
6324
6325         if (tb[NL80211_MESH_SETUP_IE]) {
6326                 struct nlattr *ieattr =
6327                         tb[NL80211_MESH_SETUP_IE];
6328                 if (!is_valid_ie_attr(ieattr))
6329                         return -EINVAL;
6330                 setup->ie = nla_data(ieattr);
6331                 setup->ie_len = nla_len(ieattr);
6332         }
6333         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6334             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6335                 return -EINVAL;
6336         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6337         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6338         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6339         if (setup->is_secure)
6340                 setup->user_mpm = true;
6341
6342         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6343                 if (!setup->user_mpm)
6344                         return -EINVAL;
6345                 setup->auth_id =
6346                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6347         }
6348
6349         return 0;
6350 }
6351
6352 static int nl80211_update_mesh_config(struct sk_buff *skb,
6353                                       struct genl_info *info)
6354 {
6355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6356         struct net_device *dev = info->user_ptr[1];
6357         struct wireless_dev *wdev = dev->ieee80211_ptr;
6358         struct mesh_config cfg;
6359         u32 mask;
6360         int err;
6361
6362         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6363                 return -EOPNOTSUPP;
6364
6365         if (!rdev->ops->update_mesh_config)
6366                 return -EOPNOTSUPP;
6367
6368         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6369         if (err)
6370                 return err;
6371
6372         wdev_lock(wdev);
6373         if (!wdev->mesh_id_len)
6374                 err = -ENOLINK;
6375
6376         if (!err)
6377                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6378
6379         wdev_unlock(wdev);
6380
6381         return err;
6382 }
6383
6384 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6385                               struct sk_buff *msg)
6386 {
6387         struct nlattr *nl_reg_rules;
6388         unsigned int i;
6389
6390         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6391             (regdom->dfs_region &&
6392              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6393                 goto nla_put_failure;
6394
6395         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6396         if (!nl_reg_rules)
6397                 goto nla_put_failure;
6398
6399         for (i = 0; i < regdom->n_reg_rules; i++) {
6400                 struct nlattr *nl_reg_rule;
6401                 const struct ieee80211_reg_rule *reg_rule;
6402                 const struct ieee80211_freq_range *freq_range;
6403                 const struct ieee80211_power_rule *power_rule;
6404                 unsigned int max_bandwidth_khz;
6405
6406                 reg_rule = &regdom->reg_rules[i];
6407                 freq_range = &reg_rule->freq_range;
6408                 power_rule = &reg_rule->power_rule;
6409
6410                 nl_reg_rule = nla_nest_start(msg, i);
6411                 if (!nl_reg_rule)
6412                         goto nla_put_failure;
6413
6414                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6415                 if (!max_bandwidth_khz)
6416                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6417                                                                   reg_rule);
6418
6419                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6420                                 reg_rule->flags) ||
6421                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6422                                 freq_range->start_freq_khz) ||
6423                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6424                                 freq_range->end_freq_khz) ||
6425                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6426                                 max_bandwidth_khz) ||
6427                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6428                                 power_rule->max_antenna_gain) ||
6429                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6430                                 power_rule->max_eirp) ||
6431                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6432                                 reg_rule->dfs_cac_ms))
6433                         goto nla_put_failure;
6434
6435                 nla_nest_end(msg, nl_reg_rule);
6436         }
6437
6438         nla_nest_end(msg, nl_reg_rules);
6439         return 0;
6440
6441 nla_put_failure:
6442         return -EMSGSIZE;
6443 }
6444
6445 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6446 {
6447         const struct ieee80211_regdomain *regdom = NULL;
6448         struct cfg80211_registered_device *rdev;
6449         struct wiphy *wiphy = NULL;
6450         struct sk_buff *msg;
6451         void *hdr;
6452
6453         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6454         if (!msg)
6455                 return -ENOBUFS;
6456
6457         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6458                              NL80211_CMD_GET_REG);
6459         if (!hdr)
6460                 goto put_failure;
6461
6462         if (info->attrs[NL80211_ATTR_WIPHY]) {
6463                 bool self_managed;
6464
6465                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6466                 if (IS_ERR(rdev)) {
6467                         nlmsg_free(msg);
6468                         return PTR_ERR(rdev);
6469                 }
6470
6471                 wiphy = &rdev->wiphy;
6472                 self_managed = wiphy->regulatory_flags &
6473                                REGULATORY_WIPHY_SELF_MANAGED;
6474                 regdom = get_wiphy_regdom(wiphy);
6475
6476                 /* a self-managed-reg device must have a private regdom */
6477                 if (WARN_ON(!regdom && self_managed)) {
6478                         nlmsg_free(msg);
6479                         return -EINVAL;
6480                 }
6481
6482                 if (regdom &&
6483                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6484                         goto nla_put_failure;
6485         }
6486
6487         if (!wiphy && reg_last_request_cell_base() &&
6488             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6489                         NL80211_USER_REG_HINT_CELL_BASE))
6490                 goto nla_put_failure;
6491
6492         rcu_read_lock();
6493
6494         if (!regdom)
6495                 regdom = rcu_dereference(cfg80211_regdomain);
6496
6497         if (nl80211_put_regdom(regdom, msg))
6498                 goto nla_put_failure_rcu;
6499
6500         rcu_read_unlock();
6501
6502         genlmsg_end(msg, hdr);
6503         return genlmsg_reply(msg, info);
6504
6505 nla_put_failure_rcu:
6506         rcu_read_unlock();
6507 nla_put_failure:
6508 put_failure:
6509         nlmsg_free(msg);
6510         return -EMSGSIZE;
6511 }
6512
6513 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6514                                u32 seq, int flags, struct wiphy *wiphy,
6515                                const struct ieee80211_regdomain *regdom)
6516 {
6517         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6518                                    NL80211_CMD_GET_REG);
6519
6520         if (!hdr)
6521                 return -1;
6522
6523         genl_dump_check_consistent(cb, hdr);
6524
6525         if (nl80211_put_regdom(regdom, msg))
6526                 goto nla_put_failure;
6527
6528         if (!wiphy && reg_last_request_cell_base() &&
6529             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6530                         NL80211_USER_REG_HINT_CELL_BASE))
6531                 goto nla_put_failure;
6532
6533         if (wiphy &&
6534             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6535                 goto nla_put_failure;
6536
6537         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6538             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6539                 goto nla_put_failure;
6540
6541         genlmsg_end(msg, hdr);
6542         return 0;
6543
6544 nla_put_failure:
6545         genlmsg_cancel(msg, hdr);
6546         return -EMSGSIZE;
6547 }
6548
6549 static int nl80211_get_reg_dump(struct sk_buff *skb,
6550                                 struct netlink_callback *cb)
6551 {
6552         const struct ieee80211_regdomain *regdom = NULL;
6553         struct cfg80211_registered_device *rdev;
6554         int err, reg_idx, start = cb->args[2];
6555
6556         rtnl_lock();
6557
6558         if (cfg80211_regdomain && start == 0) {
6559                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6560                                           NLM_F_MULTI, NULL,
6561                                           rtnl_dereference(cfg80211_regdomain));
6562                 if (err < 0)
6563                         goto out_err;
6564         }
6565
6566         /* the global regdom is idx 0 */
6567         reg_idx = 1;
6568         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6569                 regdom = get_wiphy_regdom(&rdev->wiphy);
6570                 if (!regdom)
6571                         continue;
6572
6573                 if (++reg_idx <= start)
6574                         continue;
6575
6576                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6577                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6578                 if (err < 0) {
6579                         reg_idx--;
6580                         break;
6581                 }
6582         }
6583
6584         cb->args[2] = reg_idx;
6585         err = skb->len;
6586 out_err:
6587         rtnl_unlock();
6588         return err;
6589 }
6590
6591 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6592 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6593         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6594         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6595         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6596         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6597         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6598         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6599         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6600 };
6601
6602 static int parse_reg_rule(struct nlattr *tb[],
6603         struct ieee80211_reg_rule *reg_rule)
6604 {
6605         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6606         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6607
6608         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6609                 return -EINVAL;
6610         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6611                 return -EINVAL;
6612         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6613                 return -EINVAL;
6614         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6615                 return -EINVAL;
6616         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6617                 return -EINVAL;
6618
6619         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6620
6621         freq_range->start_freq_khz =
6622                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6623         freq_range->end_freq_khz =
6624                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6625         freq_range->max_bandwidth_khz =
6626                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6627
6628         power_rule->max_eirp =
6629                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6630
6631         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6632                 power_rule->max_antenna_gain =
6633                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6634
6635         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6636                 reg_rule->dfs_cac_ms =
6637                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6638
6639         return 0;
6640 }
6641
6642 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6643 {
6644         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6645         struct nlattr *nl_reg_rule;
6646         char *alpha2;
6647         int rem_reg_rules, r;
6648         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6649         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6650         struct ieee80211_regdomain *rd;
6651
6652         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6653                 return -EINVAL;
6654
6655         if (!info->attrs[NL80211_ATTR_REG_RULES])
6656                 return -EINVAL;
6657
6658         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6659
6660         if (info->attrs[NL80211_ATTR_DFS_REGION])
6661                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6662
6663         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6664                             rem_reg_rules) {
6665                 num_rules++;
6666                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6667                         return -EINVAL;
6668         }
6669
6670         if (!reg_is_valid_request(alpha2))
6671                 return -EINVAL;
6672
6673         size_of_regd = sizeof(struct ieee80211_regdomain) +
6674                        num_rules * sizeof(struct ieee80211_reg_rule);
6675
6676         rd = kzalloc(size_of_regd, GFP_KERNEL);
6677         if (!rd)
6678                 return -ENOMEM;
6679
6680         rd->n_reg_rules = num_rules;
6681         rd->alpha2[0] = alpha2[0];
6682         rd->alpha2[1] = alpha2[1];
6683
6684         /*
6685          * Disable DFS master mode if the DFS region was
6686          * not supported or known on this kernel.
6687          */
6688         if (reg_supported_dfs_region(dfs_region))
6689                 rd->dfs_region = dfs_region;
6690
6691         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6692                             rem_reg_rules) {
6693                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6694                                      nl_reg_rule, reg_rule_policy,
6695                                      info->extack);
6696                 if (r)
6697                         goto bad_reg;
6698                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6699                 if (r)
6700                         goto bad_reg;
6701
6702                 rule_idx++;
6703
6704                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6705                         r = -EINVAL;
6706                         goto bad_reg;
6707                 }
6708         }
6709
6710         /* set_regdom takes ownership of rd */
6711         return set_regdom(rd, REGD_SOURCE_CRDA);
6712  bad_reg:
6713         kfree(rd);
6714         return r;
6715 }
6716 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6717
6718 static int validate_scan_freqs(struct nlattr *freqs)
6719 {
6720         struct nlattr *attr1, *attr2;
6721         int n_channels = 0, tmp1, tmp2;
6722
6723         nla_for_each_nested(attr1, freqs, tmp1)
6724                 if (nla_len(attr1) != sizeof(u32))
6725                         return 0;
6726
6727         nla_for_each_nested(attr1, freqs, tmp1) {
6728                 n_channels++;
6729                 /*
6730                  * Some hardware has a limited channel list for
6731                  * scanning, and it is pretty much nonsensical
6732                  * to scan for a channel twice, so disallow that
6733                  * and don't require drivers to check that the
6734                  * channel list they get isn't longer than what
6735                  * they can scan, as long as they can scan all
6736                  * the channels they registered at once.
6737                  */
6738                 nla_for_each_nested(attr2, freqs, tmp2)
6739                         if (attr1 != attr2 &&
6740                             nla_get_u32(attr1) == nla_get_u32(attr2))
6741                                 return 0;
6742         }
6743
6744         return n_channels;
6745 }
6746
6747 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6748 {
6749         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6750 }
6751
6752 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6753                             struct cfg80211_bss_selection *bss_select)
6754 {
6755         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6756         struct nlattr *nest;
6757         int err;
6758         bool found = false;
6759         int i;
6760
6761         /* only process one nested attribute */
6762         nest = nla_data(nla);
6763         if (!nla_ok(nest, nla_len(nest)))
6764                 return -EINVAL;
6765
6766         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6767                                nl80211_bss_select_policy, NULL);
6768         if (err)
6769                 return err;
6770
6771         /* only one attribute may be given */
6772         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6773                 if (attr[i]) {
6774                         if (found)
6775                                 return -EINVAL;
6776                         found = true;
6777                 }
6778         }
6779
6780         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6781
6782         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6783                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6784
6785         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6786                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6787                 bss_select->param.band_pref =
6788                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6789                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6790                         return -EINVAL;
6791         }
6792
6793         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6794                 struct nl80211_bss_select_rssi_adjust *adj_param;
6795
6796                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6797                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6798                 bss_select->param.adjust.band = adj_param->band;
6799                 bss_select->param.adjust.delta = adj_param->delta;
6800                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6801                         return -EINVAL;
6802         }
6803
6804         /* user-space did not provide behaviour attribute */
6805         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6806                 return -EINVAL;
6807
6808         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6809                 return -EINVAL;
6810
6811         return 0;
6812 }
6813
6814 static int nl80211_parse_random_mac(struct nlattr **attrs,
6815                                     u8 *mac_addr, u8 *mac_addr_mask)
6816 {
6817         int i;
6818
6819         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6820                 eth_zero_addr(mac_addr);
6821                 eth_zero_addr(mac_addr_mask);
6822                 mac_addr[0] = 0x2;
6823                 mac_addr_mask[0] = 0x3;
6824
6825                 return 0;
6826         }
6827
6828         /* need both or none */
6829         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6830                 return -EINVAL;
6831
6832         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6833         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6834
6835         /* don't allow or configure an mcast address */
6836         if (!is_multicast_ether_addr(mac_addr_mask) ||
6837             is_multicast_ether_addr(mac_addr))
6838                 return -EINVAL;
6839
6840         /*
6841          * allow users to pass a MAC address that has bits set outside
6842          * of the mask, but don't bother drivers with having to deal
6843          * with such bits
6844          */
6845         for (i = 0; i < ETH_ALEN; i++)
6846                 mac_addr[i] &= mac_addr_mask[i];
6847
6848         return 0;
6849 }
6850
6851 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6852 {
6853         ASSERT_WDEV_LOCK(wdev);
6854
6855         if (!cfg80211_beaconing_iface_active(wdev))
6856                 return true;
6857
6858         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6859                 return true;
6860
6861         return regulatory_pre_cac_allowed(wdev->wiphy);
6862 }
6863
6864 static int
6865 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6866                          void *request, struct nlattr **attrs,
6867                          bool is_sched_scan)
6868 {
6869         u8 *mac_addr, *mac_addr_mask;
6870         u32 *flags;
6871         enum nl80211_feature_flags randomness_flag;
6872
6873         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6874                 return 0;
6875
6876         if (is_sched_scan) {
6877                 struct cfg80211_sched_scan_request *req = request;
6878
6879                 randomness_flag = wdev ?
6880                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6881                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6882                 flags = &req->flags;
6883                 mac_addr = req->mac_addr;
6884                 mac_addr_mask = req->mac_addr_mask;
6885         } else {
6886                 struct cfg80211_scan_request *req = request;
6887
6888                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6889                 flags = &req->flags;
6890                 mac_addr = req->mac_addr;
6891                 mac_addr_mask = req->mac_addr_mask;
6892         }
6893
6894         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6895
6896         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6897              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
6898             ((*flags & NL80211_SCAN_FLAG_LOW_SPAN) &&
6899              !wiphy_ext_feature_isset(wiphy,
6900                                       NL80211_EXT_FEATURE_LOW_SPAN_SCAN)) ||
6901             ((*flags & NL80211_SCAN_FLAG_LOW_POWER) &&
6902              !wiphy_ext_feature_isset(wiphy,
6903                                       NL80211_EXT_FEATURE_LOW_POWER_SCAN)) ||
6904             ((*flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) &&
6905              !wiphy_ext_feature_isset(wiphy,
6906                                       NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN)))
6907                 return -EOPNOTSUPP;
6908
6909         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6910                 int err;
6911
6912                 if (!(wiphy->features & randomness_flag) ||
6913                     (wdev && wdev->current_bss))
6914                         return -EOPNOTSUPP;
6915
6916                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6917                 if (err)
6918                         return err;
6919         }
6920
6921         if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6922             !wiphy_ext_feature_isset(wiphy,
6923                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6924                 return -EOPNOTSUPP;
6925
6926         if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6927            !wiphy_ext_feature_isset(wiphy,
6928                                     NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6929                 return -EOPNOTSUPP;
6930
6931         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6932             !wiphy_ext_feature_isset(wiphy,
6933                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6934                 return -EOPNOTSUPP;
6935
6936         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6937             !wiphy_ext_feature_isset(wiphy,
6938                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6939                 return -EOPNOTSUPP;
6940
6941         return 0;
6942 }
6943
6944 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6945 {
6946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6947         struct wireless_dev *wdev = info->user_ptr[1];
6948         struct cfg80211_scan_request *request;
6949         struct nlattr *attr;
6950         struct wiphy *wiphy;
6951         int err, tmp, n_ssids = 0, n_channels, i;
6952         size_t ie_len;
6953
6954         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6955                 return -EINVAL;
6956
6957         wiphy = &rdev->wiphy;
6958
6959         if (wdev->iftype == NL80211_IFTYPE_NAN)
6960                 return -EOPNOTSUPP;
6961
6962         if (!rdev->ops->scan)
6963                 return -EOPNOTSUPP;
6964
6965         if (rdev->scan_req || rdev->scan_msg) {
6966                 err = -EBUSY;
6967                 goto unlock;
6968         }
6969
6970         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6971                 n_channels = validate_scan_freqs(
6972                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6973                 if (!n_channels) {
6974                         err = -EINVAL;
6975                         goto unlock;
6976                 }
6977         } else {
6978                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6979         }
6980
6981         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6982                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6983                         n_ssids++;
6984
6985         if (n_ssids > wiphy->max_scan_ssids) {
6986                 err = -EINVAL;
6987                 goto unlock;
6988         }
6989
6990         if (info->attrs[NL80211_ATTR_IE])
6991                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6992         else
6993                 ie_len = 0;
6994
6995         if (ie_len > wiphy->max_scan_ie_len) {
6996                 err = -EINVAL;
6997                 goto unlock;
6998         }
6999
7000         request = kzalloc(sizeof(*request)
7001                         + sizeof(*request->ssids) * n_ssids
7002                         + sizeof(*request->channels) * n_channels
7003                         + ie_len, GFP_KERNEL);
7004         if (!request) {
7005                 err = -ENOMEM;
7006                 goto unlock;
7007         }
7008
7009         if (n_ssids)
7010                 request->ssids = (void *)&request->channels[n_channels];
7011         request->n_ssids = n_ssids;
7012         if (ie_len) {
7013                 if (n_ssids)
7014                         request->ie = (void *)(request->ssids + n_ssids);
7015                 else
7016                         request->ie = (void *)(request->channels + n_channels);
7017         }
7018
7019         i = 0;
7020         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7021                 /* user specified, bail out if channel not found */
7022                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7023                         struct ieee80211_channel *chan;
7024
7025                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7026
7027                         if (!chan) {
7028                                 err = -EINVAL;
7029                                 goto out_free;
7030                         }
7031
7032                         /* ignore disabled channels */
7033                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7034                                 continue;
7035
7036                         request->channels[i] = chan;
7037                         i++;
7038                 }
7039         } else {
7040                 enum nl80211_band band;
7041
7042                 /* all channels */
7043                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7044                         int j;
7045
7046                         if (!wiphy->bands[band])
7047                                 continue;
7048                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7049                                 struct ieee80211_channel *chan;
7050
7051                                 chan = &wiphy->bands[band]->channels[j];
7052
7053                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7054                                         continue;
7055
7056                                 request->channels[i] = chan;
7057                                 i++;
7058                         }
7059                 }
7060         }
7061
7062         if (!i) {
7063                 err = -EINVAL;
7064                 goto out_free;
7065         }
7066
7067         request->n_channels = i;
7068
7069         wdev_lock(wdev);
7070         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7071                 struct ieee80211_channel *chan;
7072
7073                 if (request->n_channels != 1) {
7074                         wdev_unlock(wdev);
7075                         err = -EBUSY;
7076                         goto out_free;
7077                 }
7078
7079                 chan = request->channels[0];
7080                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7081                         wdev_unlock(wdev);
7082                         err = -EBUSY;
7083                         goto out_free;
7084                 }
7085         }
7086         wdev_unlock(wdev);
7087
7088         i = 0;
7089         if (n_ssids) {
7090                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7091                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7092                                 err = -EINVAL;
7093                                 goto out_free;
7094                         }
7095                         request->ssids[i].ssid_len = nla_len(attr);
7096                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7097                         i++;
7098                 }
7099         }
7100
7101         if (info->attrs[NL80211_ATTR_IE]) {
7102                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7103                 memcpy((void *)request->ie,
7104                        nla_data(info->attrs[NL80211_ATTR_IE]),
7105                        request->ie_len);
7106         }
7107
7108         for (i = 0; i < NUM_NL80211_BANDS; i++)
7109                 if (wiphy->bands[i])
7110                         request->rates[i] =
7111                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7112
7113         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7114                 nla_for_each_nested(attr,
7115                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7116                                     tmp) {
7117                         enum nl80211_band band = nla_type(attr);
7118
7119                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7120                                 err = -EINVAL;
7121                                 goto out_free;
7122                         }
7123
7124                         if (!wiphy->bands[band])
7125                                 continue;
7126
7127                         err = ieee80211_get_ratemask(wiphy->bands[band],
7128                                                      nla_data(attr),
7129                                                      nla_len(attr),
7130                                                      &request->rates[band]);
7131                         if (err)
7132                                 goto out_free;
7133                 }
7134         }
7135
7136         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7137                 if (!wiphy_ext_feature_isset(wiphy,
7138                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7139                         err = -EOPNOTSUPP;
7140                         goto out_free;
7141                 }
7142
7143                 request->duration =
7144                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7145                 request->duration_mandatory =
7146                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7147         }
7148
7149         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7150                                        false);
7151         if (err)
7152                 goto out_free;
7153
7154         request->no_cck =
7155                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7156
7157         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7158          * BSSID to scan for. This was problematic because that same attribute
7159          * was already used for another purpose (local random MAC address). The
7160          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7161          * compatibility with older userspace components, also use the
7162          * NL80211_ATTR_MAC value here if it can be determined to be used for
7163          * the specific BSSID use case instead of the random MAC address
7164          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7165          */
7166         if (info->attrs[NL80211_ATTR_BSSID])
7167                 memcpy(request->bssid,
7168                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7169         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7170                  info->attrs[NL80211_ATTR_MAC])
7171                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7172                        ETH_ALEN);
7173         else
7174                 eth_broadcast_addr(request->bssid);
7175
7176         request->wdev = wdev;
7177         request->wiphy = &rdev->wiphy;
7178         request->scan_start = jiffies;
7179
7180         rdev->scan_req = request;
7181         err = rdev_scan(rdev, request);
7182
7183         if (!err) {
7184                 nl80211_send_scan_start(rdev, wdev);
7185                 if (wdev->netdev)
7186                         dev_hold(wdev->netdev);
7187         } else {
7188  out_free:
7189                 rdev->scan_req = NULL;
7190                 kfree(request);
7191         }
7192
7193  unlock:
7194         return err;
7195 }
7196
7197 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7198 {
7199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7200         struct wireless_dev *wdev = info->user_ptr[1];
7201
7202         if (!rdev->ops->abort_scan)
7203                 return -EOPNOTSUPP;
7204
7205         if (rdev->scan_msg)
7206                 return 0;
7207
7208         if (!rdev->scan_req)
7209                 return -ENOENT;
7210
7211         rdev_abort_scan(rdev, wdev);
7212         return 0;
7213 }
7214
7215 static int
7216 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7217                                struct cfg80211_sched_scan_request *request,
7218                                struct nlattr **attrs)
7219 {
7220         int tmp, err, i = 0;
7221         struct nlattr *attr;
7222
7223         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7224                 u32 interval;
7225
7226                 /*
7227                  * If scan plans are not specified,
7228                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7229                  * case one scan plan will be set with the specified scan
7230                  * interval and infinite number of iterations.
7231                  */
7232                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7233                 if (!interval)
7234                         return -EINVAL;
7235
7236                 request->scan_plans[0].interval =
7237                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7238                 if (!request->scan_plans[0].interval)
7239                         return -EINVAL;
7240
7241                 if (request->scan_plans[0].interval >
7242                     wiphy->max_sched_scan_plan_interval)
7243                         request->scan_plans[0].interval =
7244                                 wiphy->max_sched_scan_plan_interval;
7245
7246                 return 0;
7247         }
7248
7249         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7250                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7251
7252                 if (WARN_ON(i >= n_plans))
7253                         return -EINVAL;
7254
7255                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7256                                        attr, nl80211_plan_policy, NULL);
7257                 if (err)
7258                         return err;
7259
7260                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7261                         return -EINVAL;
7262
7263                 request->scan_plans[i].interval =
7264                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7265                 if (!request->scan_plans[i].interval ||
7266                     request->scan_plans[i].interval >
7267                     wiphy->max_sched_scan_plan_interval)
7268                         return -EINVAL;
7269
7270                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7271                         request->scan_plans[i].iterations =
7272                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7273                         if (!request->scan_plans[i].iterations ||
7274                             (request->scan_plans[i].iterations >
7275                              wiphy->max_sched_scan_plan_iterations))
7276                                 return -EINVAL;
7277                 } else if (i < n_plans - 1) {
7278                         /*
7279                          * All scan plans but the last one must specify
7280                          * a finite number of iterations
7281                          */
7282                         return -EINVAL;
7283                 }
7284
7285                 i++;
7286         }
7287
7288         /*
7289          * The last scan plan must not specify the number of
7290          * iterations, it is supposed to run infinitely
7291          */
7292         if (request->scan_plans[n_plans - 1].iterations)
7293                 return  -EINVAL;
7294
7295         return 0;
7296 }
7297
7298 static struct cfg80211_sched_scan_request *
7299 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7300                          struct nlattr **attrs, int max_match_sets)
7301 {
7302         struct cfg80211_sched_scan_request *request;
7303         struct nlattr *attr;
7304         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7305         enum nl80211_band band;
7306         size_t ie_len;
7307         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7308         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7309
7310         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7311                 return ERR_PTR(-EINVAL);
7312
7313         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7314                 n_channels = validate_scan_freqs(
7315                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7316                 if (!n_channels)
7317                         return ERR_PTR(-EINVAL);
7318         } else {
7319                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7320         }
7321
7322         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7323                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7324                                     tmp)
7325                         n_ssids++;
7326
7327         if (n_ssids > wiphy->max_sched_scan_ssids)
7328                 return ERR_PTR(-EINVAL);
7329
7330         /*
7331          * First, count the number of 'real' matchsets. Due to an issue with
7332          * the old implementation, matchsets containing only the RSSI attribute
7333          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7334          * RSSI for all matchsets, rather than their own matchset for reporting
7335          * all APs with a strong RSSI. This is needed to be compatible with
7336          * older userspace that treated a matchset with only the RSSI as the
7337          * global RSSI for all other matchsets - if there are other matchsets.
7338          */
7339         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7340                 nla_for_each_nested(attr,
7341                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7342                                     tmp) {
7343                         struct nlattr *rssi;
7344
7345                         err = nla_parse_nested(tb,
7346                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7347                                                attr, nl80211_match_policy,
7348                                                NULL);
7349                         if (err)
7350                                 return ERR_PTR(err);
7351
7352                         /* SSID and BSSID are mutually exclusive */
7353                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7354                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7355                                 return ERR_PTR(-EINVAL);
7356
7357                         /* add other standalone attributes here */
7358                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7359                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7360                                 n_match_sets++;
7361                                 continue;
7362                         }
7363                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7364                         if (rssi)
7365                                 default_match_rssi = nla_get_s32(rssi);
7366                 }
7367         }
7368
7369         /* However, if there's no other matchset, add the RSSI one */
7370         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7371                 n_match_sets = 1;
7372
7373         if (n_match_sets > max_match_sets)
7374                 return ERR_PTR(-EINVAL);
7375
7376         if (attrs[NL80211_ATTR_IE])
7377                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7378         else
7379                 ie_len = 0;
7380
7381         if (ie_len > wiphy->max_sched_scan_ie_len)
7382                 return ERR_PTR(-EINVAL);
7383
7384         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7385                 /*
7386                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7387                  * each scan plan already specifies its own interval
7388                  */
7389                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7390                         return ERR_PTR(-EINVAL);
7391
7392                 nla_for_each_nested(attr,
7393                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7394                         n_plans++;
7395         } else {
7396                 /*
7397                  * The scan interval attribute is kept for backward
7398                  * compatibility. If no scan plans are specified and sched scan
7399                  * interval is specified, one scan plan will be set with this
7400                  * scan interval and infinite number of iterations.
7401                  */
7402                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7403                         return ERR_PTR(-EINVAL);
7404
7405                 n_plans = 1;
7406         }
7407
7408         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7409                 return ERR_PTR(-EINVAL);
7410
7411         if (!wiphy_ext_feature_isset(
7412                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7413             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7414              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7415                 return ERR_PTR(-EINVAL);
7416
7417         request = kzalloc(sizeof(*request)
7418                         + sizeof(*request->ssids) * n_ssids
7419                         + sizeof(*request->match_sets) * n_match_sets
7420                         + sizeof(*request->scan_plans) * n_plans
7421                         + sizeof(*request->channels) * n_channels
7422                         + ie_len, GFP_KERNEL);
7423         if (!request)
7424                 return ERR_PTR(-ENOMEM);
7425
7426         if (n_ssids)
7427                 request->ssids = (void *)&request->channels[n_channels];
7428         request->n_ssids = n_ssids;
7429         if (ie_len) {
7430                 if (n_ssids)
7431                         request->ie = (void *)(request->ssids + n_ssids);
7432                 else
7433                         request->ie = (void *)(request->channels + n_channels);
7434         }
7435
7436         if (n_match_sets) {
7437                 if (request->ie)
7438                         request->match_sets = (void *)(request->ie + ie_len);
7439                 else if (n_ssids)
7440                         request->match_sets =
7441                                 (void *)(request->ssids + n_ssids);
7442                 else
7443                         request->match_sets =
7444                                 (void *)(request->channels + n_channels);
7445         }
7446         request->n_match_sets = n_match_sets;
7447
7448         if (n_match_sets)
7449                 request->scan_plans = (void *)(request->match_sets +
7450                                                n_match_sets);
7451         else if (request->ie)
7452                 request->scan_plans = (void *)(request->ie + ie_len);
7453         else if (n_ssids)
7454                 request->scan_plans = (void *)(request->ssids + n_ssids);
7455         else
7456                 request->scan_plans = (void *)(request->channels + n_channels);
7457
7458         request->n_scan_plans = n_plans;
7459
7460         i = 0;
7461         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7462                 /* user specified, bail out if channel not found */
7463                 nla_for_each_nested(attr,
7464                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7465                                     tmp) {
7466                         struct ieee80211_channel *chan;
7467
7468                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7469
7470                         if (!chan) {
7471                                 err = -EINVAL;
7472                                 goto out_free;
7473                         }
7474
7475                         /* ignore disabled channels */
7476                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7477                                 continue;
7478
7479                         request->channels[i] = chan;
7480                         i++;
7481                 }
7482         } else {
7483                 /* all channels */
7484                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7485                         int j;
7486
7487                         if (!wiphy->bands[band])
7488                                 continue;
7489                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7490                                 struct ieee80211_channel *chan;
7491
7492                                 chan = &wiphy->bands[band]->channels[j];
7493
7494                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7495                                         continue;
7496
7497                                 request->channels[i] = chan;
7498                                 i++;
7499                         }
7500                 }
7501         }
7502
7503         if (!i) {
7504                 err = -EINVAL;
7505                 goto out_free;
7506         }
7507
7508         request->n_channels = i;
7509
7510         i = 0;
7511         if (n_ssids) {
7512                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7513                                     tmp) {
7514                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7515                                 err = -EINVAL;
7516                                 goto out_free;
7517                         }
7518                         request->ssids[i].ssid_len = nla_len(attr);
7519                         memcpy(request->ssids[i].ssid, nla_data(attr),
7520                                nla_len(attr));
7521                         i++;
7522                 }
7523         }
7524
7525         i = 0;
7526         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7527                 nla_for_each_nested(attr,
7528                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7529                                     tmp) {
7530                         struct nlattr *ssid, *bssid, *rssi;
7531
7532                         err = nla_parse_nested(tb,
7533                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7534                                                attr, nl80211_match_policy,
7535                                                NULL);
7536                         if (err)
7537                                 goto out_free;
7538                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7539                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7540                         if (ssid || bssid) {
7541                                 if (WARN_ON(i >= n_match_sets)) {
7542                                         /* this indicates a programming error,
7543                                          * the loop above should have verified
7544                                          * things properly
7545                                          */
7546                                         err = -EINVAL;
7547                                         goto out_free;
7548                                 }
7549
7550                                 if (ssid) {
7551                                         if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7552                                                 err = -EINVAL;
7553                                                 goto out_free;
7554                                         }
7555                                         memcpy(request->match_sets[i].ssid.ssid,
7556                                                nla_data(ssid), nla_len(ssid));
7557                                         request->match_sets[i].ssid.ssid_len =
7558                                                 nla_len(ssid);
7559                                 }
7560                                 if (bssid) {
7561                                         if (nla_len(bssid) != ETH_ALEN) {
7562                                                 err = -EINVAL;
7563                                                 goto out_free;
7564                                         }
7565                                         memcpy(request->match_sets[i].bssid,
7566                                                nla_data(bssid), ETH_ALEN);
7567                                 }
7568
7569                                 /* special attribute - old implementation w/a */
7570                                 request->match_sets[i].rssi_thold =
7571                                         default_match_rssi;
7572                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7573                                 if (rssi)
7574                                         request->match_sets[i].rssi_thold =
7575                                                 nla_get_s32(rssi);
7576                         }
7577                         i++;
7578                 }
7579
7580                 /* there was no other matchset, so the RSSI one is alone */
7581                 if (i == 0 && n_match_sets)
7582                         request->match_sets[0].rssi_thold = default_match_rssi;
7583
7584                 request->min_rssi_thold = INT_MAX;
7585                 for (i = 0; i < n_match_sets; i++)
7586                         request->min_rssi_thold =
7587                                 min(request->match_sets[i].rssi_thold,
7588                                     request->min_rssi_thold);
7589         } else {
7590                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7591         }
7592
7593         if (ie_len) {
7594                 request->ie_len = ie_len;
7595                 memcpy((void *)request->ie,
7596                        nla_data(attrs[NL80211_ATTR_IE]),
7597                        request->ie_len);
7598         }
7599
7600         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7601         if (err)
7602                 goto out_free;
7603
7604         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7605                 request->delay =
7606                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7607
7608         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7609                 request->relative_rssi = nla_get_s8(
7610                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7611                 request->relative_rssi_set = true;
7612         }
7613
7614         if (request->relative_rssi_set &&
7615             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7616                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7617
7618                 rssi_adjust = nla_data(
7619                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7620                 request->rssi_adjust.band = rssi_adjust->band;
7621                 request->rssi_adjust.delta = rssi_adjust->delta;
7622                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7623                         err = -EINVAL;
7624                         goto out_free;
7625                 }
7626         }
7627
7628         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7629         if (err)
7630                 goto out_free;
7631
7632         request->scan_start = jiffies;
7633
7634         return request;
7635
7636 out_free:
7637         kfree(request);
7638         return ERR_PTR(err);
7639 }
7640
7641 static int nl80211_start_sched_scan(struct sk_buff *skb,
7642                                     struct genl_info *info)
7643 {
7644         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7645         struct net_device *dev = info->user_ptr[1];
7646         struct wireless_dev *wdev = dev->ieee80211_ptr;
7647         struct cfg80211_sched_scan_request *sched_scan_req;
7648         bool want_multi;
7649         int err;
7650
7651         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7652                 return -EOPNOTSUPP;
7653
7654         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7655         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7656         if (err)
7657                 return err;
7658
7659         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7660                                                   info->attrs,
7661                                                   rdev->wiphy.max_match_sets);
7662
7663         err = PTR_ERR_OR_ZERO(sched_scan_req);
7664         if (err)
7665                 goto out_err;
7666
7667         /* leave request id zero for legacy request
7668          * or if driver does not support multi-scheduled scan
7669          */
7670         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7671                 while (!sched_scan_req->reqid)
7672                         sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7673         }
7674
7675         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7676         if (err)
7677                 goto out_free;
7678
7679         sched_scan_req->dev = dev;
7680         sched_scan_req->wiphy = &rdev->wiphy;
7681
7682         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7683                 sched_scan_req->owner_nlportid = info->snd_portid;
7684
7685         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7686
7687         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7688         return 0;
7689
7690 out_free:
7691         kfree(sched_scan_req);
7692 out_err:
7693         return err;
7694 }
7695
7696 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7697                                    struct genl_info *info)
7698 {
7699         struct cfg80211_sched_scan_request *req;
7700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7701         u64 cookie;
7702
7703         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7704                 return -EOPNOTSUPP;
7705
7706         if (info->attrs[NL80211_ATTR_COOKIE]) {
7707                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7708                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7709         }
7710
7711         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7712                                      struct cfg80211_sched_scan_request,
7713                                      list);
7714         if (!req || req->reqid ||
7715             (req->owner_nlportid &&
7716              req->owner_nlportid != info->snd_portid))
7717                 return -ENOENT;
7718
7719         return cfg80211_stop_sched_scan_req(rdev, req, false);
7720 }
7721
7722 static int nl80211_start_radar_detection(struct sk_buff *skb,
7723                                          struct genl_info *info)
7724 {
7725         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7726         struct net_device *dev = info->user_ptr[1];
7727         struct wireless_dev *wdev = dev->ieee80211_ptr;
7728         struct wiphy *wiphy = wdev->wiphy;
7729         struct cfg80211_chan_def chandef;
7730         enum nl80211_dfs_regions dfs_region;
7731         unsigned int cac_time_ms;
7732         int err;
7733
7734         dfs_region = reg_get_dfs_region(wiphy);
7735         if (dfs_region == NL80211_DFS_UNSET)
7736                 return -EINVAL;
7737
7738         err = nl80211_parse_chandef(rdev, info, &chandef);
7739         if (err)
7740                 return err;
7741
7742         if (netif_carrier_ok(dev))
7743                 return -EBUSY;
7744
7745         if (wdev->cac_started)
7746                 return -EBUSY;
7747
7748         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7749         if (err < 0)
7750                 return err;
7751
7752         if (err == 0)
7753                 return -EINVAL;
7754
7755         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7756                 return -EINVAL;
7757
7758         /* CAC start is offloaded to HW and can't be started manually */
7759         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7760                 return -EOPNOTSUPP;
7761
7762         if (!rdev->ops->start_radar_detection)
7763                 return -EOPNOTSUPP;
7764
7765         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7766         if (WARN_ON(!cac_time_ms))
7767                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7768
7769         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7770         if (!err) {
7771                 wdev->chandef = chandef;
7772                 wdev->cac_started = true;
7773                 wdev->cac_start_time = jiffies;
7774                 wdev->cac_time_ms = cac_time_ms;
7775         }
7776         return err;
7777 }
7778
7779 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7780 {
7781         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7782         struct net_device *dev = info->user_ptr[1];
7783         struct wireless_dev *wdev = dev->ieee80211_ptr;
7784         struct cfg80211_csa_settings params;
7785         /* csa_attrs is defined static to avoid waste of stack size - this
7786          * function is called under RTNL lock, so this should not be a problem.
7787          */
7788         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7789         int err;
7790         bool need_new_beacon = false;
7791         bool need_handle_dfs_flag = true;
7792         int len, i;
7793         u32 cs_count;
7794
7795         if (!rdev->ops->channel_switch ||
7796             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7797                 return -EOPNOTSUPP;
7798
7799         switch (dev->ieee80211_ptr->iftype) {
7800         case NL80211_IFTYPE_AP:
7801         case NL80211_IFTYPE_P2P_GO:
7802                 need_new_beacon = true;
7803                 /* For all modes except AP the handle_dfs flag needs to be
7804                  * supplied to tell the kernel that userspace will handle radar
7805                  * events when they happen. Otherwise a switch to a channel
7806                  * requiring DFS will be rejected.
7807                  */
7808                 need_handle_dfs_flag = false;
7809
7810                 /* useless if AP is not running */
7811                 if (!wdev->beacon_interval)
7812                         return -ENOTCONN;
7813                 break;
7814         case NL80211_IFTYPE_ADHOC:
7815                 if (!wdev->ssid_len)
7816                         return -ENOTCONN;
7817                 break;
7818         case NL80211_IFTYPE_MESH_POINT:
7819                 if (!wdev->mesh_id_len)
7820                         return -ENOTCONN;
7821                 break;
7822         default:
7823                 return -EOPNOTSUPP;
7824         }
7825
7826         memset(&params, 0, sizeof(params));
7827
7828         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7829             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7830                 return -EINVAL;
7831
7832         /* only important for AP, IBSS and mesh create IEs internally */
7833         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7834                 return -EINVAL;
7835
7836         /* Even though the attribute is u32, the specification says
7837          * u8, so let's make sure we don't overflow.
7838          */
7839         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7840         if (cs_count > 255)
7841                 return -EINVAL;
7842
7843         params.count = cs_count;
7844
7845         if (!need_new_beacon)
7846                 goto skip_beacons;
7847
7848         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7849         if (err)
7850                 return err;
7851
7852         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7853                                info->attrs[NL80211_ATTR_CSA_IES],
7854                                nl80211_policy, info->extack);
7855         if (err)
7856                 return err;
7857
7858         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7859         if (err)
7860                 return err;
7861
7862         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7863                 return -EINVAL;
7864
7865         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7866         if (!len || (len % sizeof(u16)))
7867                 return -EINVAL;
7868
7869         params.n_counter_offsets_beacon = len / sizeof(u16);
7870         if (rdev->wiphy.max_num_csa_counters &&
7871             (params.n_counter_offsets_beacon >
7872              rdev->wiphy.max_num_csa_counters))
7873                 return -EINVAL;
7874
7875         params.counter_offsets_beacon =
7876                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7877
7878         /* sanity checks - counters should fit and be the same */
7879         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7880                 u16 offset = params.counter_offsets_beacon[i];
7881
7882                 if (offset >= params.beacon_csa.tail_len)
7883                         return -EINVAL;
7884
7885                 if (params.beacon_csa.tail[offset] != params.count)
7886                         return -EINVAL;
7887         }
7888
7889         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7890                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7891                 if (!len || (len % sizeof(u16)))
7892                         return -EINVAL;
7893
7894                 params.n_counter_offsets_presp = len / sizeof(u16);
7895                 if (rdev->wiphy.max_num_csa_counters &&
7896                     (params.n_counter_offsets_presp >
7897                      rdev->wiphy.max_num_csa_counters))
7898                         return -EINVAL;
7899
7900                 params.counter_offsets_presp =
7901                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7902
7903                 /* sanity checks - counters should fit and be the same */
7904                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7905                         u16 offset = params.counter_offsets_presp[i];
7906
7907                         if (offset >= params.beacon_csa.probe_resp_len)
7908                                 return -EINVAL;
7909
7910                         if (params.beacon_csa.probe_resp[offset] !=
7911                             params.count)
7912                                 return -EINVAL;
7913                 }
7914         }
7915
7916 skip_beacons:
7917         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7918         if (err)
7919                 return err;
7920
7921         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7922                                            wdev->iftype))
7923                 return -EINVAL;
7924
7925         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7926                                             &params.chandef,
7927                                             wdev->iftype);
7928         if (err < 0)
7929                 return err;
7930
7931         if (err > 0) {
7932                 params.radar_required = true;
7933                 if (need_handle_dfs_flag &&
7934                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7935                         return -EINVAL;
7936                 }
7937         }
7938
7939         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7940                 params.block_tx = true;
7941
7942         wdev_lock(wdev);
7943         err = rdev_channel_switch(rdev, dev, &params);
7944         wdev_unlock(wdev);
7945
7946         return err;
7947 }
7948
7949 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7950                             u32 seq, int flags,
7951                             struct cfg80211_registered_device *rdev,
7952                             struct wireless_dev *wdev,
7953                             struct cfg80211_internal_bss *intbss)
7954 {
7955         struct cfg80211_bss *res = &intbss->pub;
7956         const struct cfg80211_bss_ies *ies;
7957         void *hdr;
7958         struct nlattr *bss;
7959
7960         ASSERT_WDEV_LOCK(wdev);
7961
7962         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7963                              NL80211_CMD_NEW_SCAN_RESULTS);
7964         if (!hdr)
7965                 return -1;
7966
7967         genl_dump_check_consistent(cb, hdr);
7968
7969         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7970                 goto nla_put_failure;
7971         if (wdev->netdev &&
7972             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7973                 goto nla_put_failure;
7974         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7975                               NL80211_ATTR_PAD))
7976                 goto nla_put_failure;
7977
7978         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7979         if (!bss)
7980                 goto nla_put_failure;
7981         if ((!is_zero_ether_addr(res->bssid) &&
7982              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7983                 goto nla_put_failure;
7984
7985         rcu_read_lock();
7986         /* indicate whether we have probe response data or not */
7987         if (rcu_access_pointer(res->proberesp_ies) &&
7988             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7989                 goto fail_unlock_rcu;
7990
7991         /* this pointer prefers to be pointed to probe response data
7992          * but is always valid
7993          */
7994         ies = rcu_dereference(res->ies);
7995         if (ies) {
7996                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7997                                       NL80211_BSS_PAD))
7998                         goto fail_unlock_rcu;
7999                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8000                                         ies->len, ies->data))
8001                         goto fail_unlock_rcu;
8002         }
8003
8004         /* and this pointer is always (unless driver didn't know) beacon data */
8005         ies = rcu_dereference(res->beacon_ies);
8006         if (ies && ies->from_beacon) {
8007                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8008                                       NL80211_BSS_PAD))
8009                         goto fail_unlock_rcu;
8010                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8011                                         ies->len, ies->data))
8012                         goto fail_unlock_rcu;
8013         }
8014         rcu_read_unlock();
8015
8016         if (res->beacon_interval &&
8017             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8018                 goto nla_put_failure;
8019         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8020             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8021             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8022             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8023                         jiffies_to_msecs(jiffies - intbss->ts)))
8024                 goto nla_put_failure;
8025
8026         if (intbss->parent_tsf &&
8027             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8028                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8029              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8030                      intbss->parent_bssid)))
8031                 goto nla_put_failure;
8032
8033         if (intbss->ts_boottime &&
8034             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8035                               intbss->ts_boottime, NL80211_BSS_PAD))
8036                 goto nla_put_failure;
8037
8038         if (!nl80211_put_signal(msg, intbss->pub.chains,
8039                                 intbss->pub.chain_signal,
8040                                 NL80211_BSS_CHAIN_SIGNAL))
8041                 goto nla_put_failure;
8042
8043         switch (rdev->wiphy.signal_type) {
8044         case CFG80211_SIGNAL_TYPE_MBM:
8045                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8046                         goto nla_put_failure;
8047                 break;
8048         case CFG80211_SIGNAL_TYPE_UNSPEC:
8049                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8050                         goto nla_put_failure;
8051                 break;
8052         default:
8053                 break;
8054         }
8055
8056         switch (wdev->iftype) {
8057         case NL80211_IFTYPE_P2P_CLIENT:
8058         case NL80211_IFTYPE_STATION:
8059                 if (intbss == wdev->current_bss &&
8060                     nla_put_u32(msg, NL80211_BSS_STATUS,
8061                                 NL80211_BSS_STATUS_ASSOCIATED))
8062                         goto nla_put_failure;
8063                 break;
8064         case NL80211_IFTYPE_ADHOC:
8065                 if (intbss == wdev->current_bss &&
8066                     nla_put_u32(msg, NL80211_BSS_STATUS,
8067                                 NL80211_BSS_STATUS_IBSS_JOINED))
8068                         goto nla_put_failure;
8069                 break;
8070         default:
8071                 break;
8072         }
8073
8074         nla_nest_end(msg, bss);
8075
8076         genlmsg_end(msg, hdr);
8077         return 0;
8078
8079  fail_unlock_rcu:
8080         rcu_read_unlock();
8081  nla_put_failure:
8082         genlmsg_cancel(msg, hdr);
8083         return -EMSGSIZE;
8084 }
8085
8086 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8087 {
8088         struct cfg80211_registered_device *rdev;
8089         struct cfg80211_internal_bss *scan;
8090         struct wireless_dev *wdev;
8091         int start = cb->args[2], idx = 0;
8092         int err;
8093
8094         rtnl_lock();
8095         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8096         if (err) {
8097                 rtnl_unlock();
8098                 return err;
8099         }
8100
8101         wdev_lock(wdev);
8102         spin_lock_bh(&rdev->bss_lock);
8103
8104         /*
8105          * dump_scan will be called multiple times to break up the scan results
8106          * into multiple messages.  It is unlikely that any more bss-es will be
8107          * expired after the first call, so only call only call this on the
8108          * first dump_scan invocation.
8109          */
8110         if (start == 0)
8111                 cfg80211_bss_expire(rdev);
8112
8113         cb->seq = rdev->bss_generation;
8114
8115         list_for_each_entry(scan, &rdev->bss_list, list) {
8116                 if (++idx <= start)
8117                         continue;
8118                 if (nl80211_send_bss(skb, cb,
8119                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8120                                 rdev, wdev, scan) < 0) {
8121                         idx--;
8122                         break;
8123                 }
8124         }
8125
8126         spin_unlock_bh(&rdev->bss_lock);
8127         wdev_unlock(wdev);
8128
8129         cb->args[2] = idx;
8130         rtnl_unlock();
8131
8132         return skb->len;
8133 }
8134
8135 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8136                                int flags, struct net_device *dev,
8137                                bool allow_radio_stats,
8138                                struct survey_info *survey)
8139 {
8140         void *hdr;
8141         struct nlattr *infoattr;
8142
8143         /* skip radio stats if userspace didn't request them */
8144         if (!survey->channel && !allow_radio_stats)
8145                 return 0;
8146
8147         hdr = nl80211hdr_put(msg, portid, seq, flags,
8148                              NL80211_CMD_NEW_SURVEY_RESULTS);
8149         if (!hdr)
8150                 return -ENOMEM;
8151
8152         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8153                 goto nla_put_failure;
8154
8155         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8156         if (!infoattr)
8157                 goto nla_put_failure;
8158
8159         if (survey->channel &&
8160             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8161                         survey->channel->center_freq))
8162                 goto nla_put_failure;
8163
8164         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8165             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8166                 goto nla_put_failure;
8167         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8168             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8169                 goto nla_put_failure;
8170         if ((survey->filled & SURVEY_INFO_TIME) &&
8171             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8172                         survey->time, NL80211_SURVEY_INFO_PAD))
8173                 goto nla_put_failure;
8174         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8175             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8176                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8177                 goto nla_put_failure;
8178         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8179             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8180                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8181                 goto nla_put_failure;
8182         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8183             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8184                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8185                 goto nla_put_failure;
8186         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8187             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8188                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8189                 goto nla_put_failure;
8190         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8191             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8192                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8193                 goto nla_put_failure;
8194
8195         nla_nest_end(msg, infoattr);
8196
8197         genlmsg_end(msg, hdr);
8198         return 0;
8199
8200  nla_put_failure:
8201         genlmsg_cancel(msg, hdr);
8202         return -EMSGSIZE;
8203 }
8204
8205 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8206 {
8207         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8208         struct survey_info survey;
8209         struct cfg80211_registered_device *rdev;
8210         struct wireless_dev *wdev;
8211         int survey_idx = cb->args[2];
8212         int res;
8213         bool radio_stats;
8214
8215         rtnl_lock();
8216         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8217         if (res)
8218                 goto out_err;
8219
8220         /* prepare_wdev_dump parsed the attributes */
8221         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8222
8223         if (!wdev->netdev) {
8224                 res = -EINVAL;
8225                 goto out_err;
8226         }
8227
8228         if (!rdev->ops->dump_survey) {
8229                 res = -EOPNOTSUPP;
8230                 goto out_err;
8231         }
8232
8233         while (1) {
8234                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8235                 if (res == -ENOENT)
8236                         break;
8237                 if (res)
8238                         goto out_err;
8239
8240                 /* don't send disabled channels, but do send non-channel data */
8241                 if (survey.channel &&
8242                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8243                         survey_idx++;
8244                         continue;
8245                 }
8246
8247                 if (nl80211_send_survey(skb,
8248                                 NETLINK_CB(cb->skb).portid,
8249                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8250                                 wdev->netdev, radio_stats, &survey) < 0)
8251                         goto out;
8252                 survey_idx++;
8253         }
8254
8255  out:
8256         cb->args[2] = survey_idx;
8257         res = skb->len;
8258  out_err:
8259         rtnl_unlock();
8260         return res;
8261 }
8262
8263 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8264 {
8265         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8266                                   NL80211_WPA_VERSION_2));
8267 }
8268
8269 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8270 {
8271         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8272         struct net_device *dev = info->user_ptr[1];
8273         struct ieee80211_channel *chan;
8274         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8275         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8276         enum nl80211_auth_type auth_type;
8277         struct key_parse key;
8278         bool local_state_change;
8279
8280         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8281                 return -EINVAL;
8282
8283         if (!info->attrs[NL80211_ATTR_MAC])
8284                 return -EINVAL;
8285
8286         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8287                 return -EINVAL;
8288
8289         if (!info->attrs[NL80211_ATTR_SSID])
8290                 return -EINVAL;
8291
8292         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8293                 return -EINVAL;
8294
8295         err = nl80211_parse_key(info, &key);
8296         if (err)
8297                 return err;
8298
8299         if (key.idx >= 0) {
8300                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8301                         return -EINVAL;
8302                 if (!key.p.key || !key.p.key_len)
8303                         return -EINVAL;
8304                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8305                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8306                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8307                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8308                         return -EINVAL;
8309                 if (key.idx > 3)
8310                         return -EINVAL;
8311         } else {
8312                 key.p.key_len = 0;
8313                 key.p.key = NULL;
8314         }
8315
8316         if (key.idx >= 0) {
8317                 int i;
8318                 bool ok = false;
8319
8320                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8321                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8322                                 ok = true;
8323                                 break;
8324                         }
8325                 }
8326                 if (!ok)
8327                         return -EINVAL;
8328         }
8329
8330         if (!rdev->ops->auth)
8331                 return -EOPNOTSUPP;
8332
8333         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8334             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8335                 return -EOPNOTSUPP;
8336
8337         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8338         chan = nl80211_get_valid_chan(&rdev->wiphy,
8339                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8340         if (!chan)
8341                 return -EINVAL;
8342
8343         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8344         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8345
8346         if (info->attrs[NL80211_ATTR_IE]) {
8347                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8348                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8349         }
8350
8351         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8352         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8353                 return -EINVAL;
8354
8355         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8356              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8357              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8358              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8359             !info->attrs[NL80211_ATTR_AUTH_DATA])
8360                 return -EINVAL;
8361
8362         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8363                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8364                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8365                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8366                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8367                         return -EINVAL;
8368                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8369                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8370                 /* need to include at least Auth Transaction and Status Code */
8371                 if (auth_data_len < 4)
8372                         return -EINVAL;
8373         }
8374
8375         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8376
8377         /*
8378          * Since we no longer track auth state, ignore
8379          * requests to only change local state.
8380          */
8381         if (local_state_change)
8382                 return 0;
8383
8384         wdev_lock(dev->ieee80211_ptr);
8385         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8386                                  ssid, ssid_len, ie, ie_len,
8387                                  key.p.key, key.p.key_len, key.idx,
8388                                  auth_data, auth_data_len);
8389         wdev_unlock(dev->ieee80211_ptr);
8390         return err;
8391 }
8392
8393 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8394                                      struct genl_info *info)
8395 {
8396         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8397                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8398                 return -EINVAL;
8399         }
8400
8401         if (!rdev->ops->tx_control_port ||
8402             !wiphy_ext_feature_isset(&rdev->wiphy,
8403                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8404                 return -EOPNOTSUPP;
8405
8406         return 0;
8407 }
8408
8409 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8410                                    struct genl_info *info,
8411                                    struct cfg80211_crypto_settings *settings,
8412                                    int cipher_limit)
8413 {
8414         memset(settings, 0, sizeof(*settings));
8415
8416         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8417
8418         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8419                 u16 proto;
8420
8421                 proto = nla_get_u16(
8422                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8423                 settings->control_port_ethertype = cpu_to_be16(proto);
8424                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8425                     proto != ETH_P_PAE)
8426                         return -EINVAL;
8427                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8428                         settings->control_port_no_encrypt = true;
8429         } else
8430                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8431
8432         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8433                 int r = validate_pae_over_nl80211(rdev, info);
8434
8435                 if (r < 0)
8436                         return r;
8437
8438                 settings->control_port_over_nl80211 = true;
8439         }
8440
8441         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8442                 void *data;
8443                 int len, i;
8444
8445                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8446                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8447                 settings->n_ciphers_pairwise = len / sizeof(u32);
8448
8449                 if (len % sizeof(u32))
8450                         return -EINVAL;
8451
8452                 if (settings->n_ciphers_pairwise > cipher_limit)
8453                         return -EINVAL;
8454
8455                 memcpy(settings->ciphers_pairwise, data, len);
8456
8457                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8458                         if (!cfg80211_supported_cipher_suite(
8459                                         &rdev->wiphy,
8460                                         settings->ciphers_pairwise[i]))
8461                                 return -EINVAL;
8462         }
8463
8464         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8465                 settings->cipher_group =
8466                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8467                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8468                                                      settings->cipher_group))
8469                         return -EINVAL;
8470         }
8471
8472         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8473                 settings->wpa_versions =
8474                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8475                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8476                         return -EINVAL;
8477         }
8478
8479         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8480                 void *data;
8481                 int len;
8482
8483                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8484                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8485                 settings->n_akm_suites = len / sizeof(u32);
8486
8487                 if (len % sizeof(u32))
8488                         return -EINVAL;
8489
8490                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8491                         return -EINVAL;
8492
8493                 memcpy(settings->akm_suites, data, len);
8494         }
8495
8496         if (info->attrs[NL80211_ATTR_PMK]) {
8497                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8498                         return -EINVAL;
8499                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8500                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8501                         return -EINVAL;
8502                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8503         }
8504
8505         return 0;
8506 }
8507
8508 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8509 {
8510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8511         struct net_device *dev = info->user_ptr[1];
8512         struct ieee80211_channel *chan;
8513         struct cfg80211_assoc_request req = {};
8514         const u8 *bssid, *ssid;
8515         int err, ssid_len = 0;
8516
8517         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8518             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8519                 return -EPERM;
8520
8521         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8522                 return -EINVAL;
8523
8524         if (!info->attrs[NL80211_ATTR_MAC] ||
8525             !info->attrs[NL80211_ATTR_SSID] ||
8526             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8527                 return -EINVAL;
8528
8529         if (!rdev->ops->assoc)
8530                 return -EOPNOTSUPP;
8531
8532         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8533             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8534                 return -EOPNOTSUPP;
8535
8536         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8537
8538         chan = nl80211_get_valid_chan(&rdev->wiphy,
8539                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8540         if (!chan)
8541                 return -EINVAL;
8542
8543         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8544         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8545
8546         if (info->attrs[NL80211_ATTR_IE]) {
8547                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8548                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8549         }
8550
8551         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8552                 enum nl80211_mfp mfp =
8553                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8554                 if (mfp == NL80211_MFP_REQUIRED)
8555                         req.use_mfp = true;
8556                 else if (mfp != NL80211_MFP_NO)
8557                         return -EINVAL;
8558         }
8559
8560         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8561                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8562
8563         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8564                 req.flags |= ASSOC_REQ_DISABLE_HT;
8565
8566         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8567                 memcpy(&req.ht_capa_mask,
8568                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8569                        sizeof(req.ht_capa_mask));
8570
8571         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8572                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8573                         return -EINVAL;
8574                 memcpy(&req.ht_capa,
8575                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8576                        sizeof(req.ht_capa));
8577         }
8578
8579         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8580                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8581
8582         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8583                 memcpy(&req.vht_capa_mask,
8584                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8585                        sizeof(req.vht_capa_mask));
8586
8587         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8588                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8589                         return -EINVAL;
8590                 memcpy(&req.vht_capa,
8591                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8592                        sizeof(req.vht_capa));
8593         }
8594
8595         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8596                 if (!((rdev->wiphy.features &
8597                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8598                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8599                     !wiphy_ext_feature_isset(&rdev->wiphy,
8600                                              NL80211_EXT_FEATURE_RRM))
8601                         return -EINVAL;
8602                 req.flags |= ASSOC_REQ_USE_RRM;
8603         }
8604
8605         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8606                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8607                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8608                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8609                         return -EINVAL;
8610                 req.fils_nonces =
8611                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8612         }
8613
8614         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8615         if (!err) {
8616                 wdev_lock(dev->ieee80211_ptr);
8617
8618                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8619                                           ssid, ssid_len, &req);
8620
8621                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8622                         dev->ieee80211_ptr->conn_owner_nlportid =
8623                                 info->snd_portid;
8624                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
8625                                bssid, ETH_ALEN);
8626                 }
8627
8628                 wdev_unlock(dev->ieee80211_ptr);
8629         }
8630
8631         return err;
8632 }
8633
8634 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8635 {
8636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8637         struct net_device *dev = info->user_ptr[1];
8638         const u8 *ie = NULL, *bssid;
8639         int ie_len = 0, err;
8640         u16 reason_code;
8641         bool local_state_change;
8642
8643         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8644             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8645                 return -EPERM;
8646
8647         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8648                 return -EINVAL;
8649
8650         if (!info->attrs[NL80211_ATTR_MAC])
8651                 return -EINVAL;
8652
8653         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8654                 return -EINVAL;
8655
8656         if (!rdev->ops->deauth)
8657                 return -EOPNOTSUPP;
8658
8659         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8660             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8661                 return -EOPNOTSUPP;
8662
8663         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8664
8665         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8666         if (reason_code == 0) {
8667                 /* Reason Code 0 is reserved */
8668                 return -EINVAL;
8669         }
8670
8671         if (info->attrs[NL80211_ATTR_IE]) {
8672                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8673                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8674         }
8675
8676         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8677
8678         wdev_lock(dev->ieee80211_ptr);
8679         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8680                                    local_state_change);
8681         wdev_unlock(dev->ieee80211_ptr);
8682         return err;
8683 }
8684
8685 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8686 {
8687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8688         struct net_device *dev = info->user_ptr[1];
8689         const u8 *ie = NULL, *bssid;
8690         int ie_len = 0, err;
8691         u16 reason_code;
8692         bool local_state_change;
8693
8694         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8695             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8696                 return -EPERM;
8697
8698         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8699                 return -EINVAL;
8700
8701         if (!info->attrs[NL80211_ATTR_MAC])
8702                 return -EINVAL;
8703
8704         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8705                 return -EINVAL;
8706
8707         if (!rdev->ops->disassoc)
8708                 return -EOPNOTSUPP;
8709
8710         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8711             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8712                 return -EOPNOTSUPP;
8713
8714         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8715
8716         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8717         if (reason_code == 0) {
8718                 /* Reason Code 0 is reserved */
8719                 return -EINVAL;
8720         }
8721
8722         if (info->attrs[NL80211_ATTR_IE]) {
8723                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8724                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8725         }
8726
8727         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8728
8729         wdev_lock(dev->ieee80211_ptr);
8730         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8731                                      local_state_change);
8732         wdev_unlock(dev->ieee80211_ptr);
8733         return err;
8734 }
8735
8736 static bool
8737 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8738                          int mcast_rate[NUM_NL80211_BANDS],
8739                          int rateval)
8740 {
8741         struct wiphy *wiphy = &rdev->wiphy;
8742         bool found = false;
8743         int band, i;
8744
8745         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8746                 struct ieee80211_supported_band *sband;
8747
8748                 sband = wiphy->bands[band];
8749                 if (!sband)
8750                         continue;
8751
8752                 for (i = 0; i < sband->n_bitrates; i++) {
8753                         if (sband->bitrates[i].bitrate == rateval) {
8754                                 mcast_rate[band] = i + 1;
8755                                 found = true;
8756                                 break;
8757                         }
8758                 }
8759         }
8760
8761         return found;
8762 }
8763
8764 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8765 {
8766         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8767         struct net_device *dev = info->user_ptr[1];
8768         struct cfg80211_ibss_params ibss;
8769         struct wiphy *wiphy;
8770         struct cfg80211_cached_keys *connkeys = NULL;
8771         int err;
8772
8773         memset(&ibss, 0, sizeof(ibss));
8774
8775         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8776                 return -EINVAL;
8777
8778         if (!info->attrs[NL80211_ATTR_SSID] ||
8779             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8780                 return -EINVAL;
8781
8782         ibss.beacon_interval = 100;
8783
8784         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8785                 ibss.beacon_interval =
8786                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8787
8788         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8789                                            ibss.beacon_interval);
8790         if (err)
8791                 return err;
8792
8793         if (!rdev->ops->join_ibss)
8794                 return -EOPNOTSUPP;
8795
8796         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8797                 return -EOPNOTSUPP;
8798
8799         wiphy = &rdev->wiphy;
8800
8801         if (info->attrs[NL80211_ATTR_MAC]) {
8802                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8803
8804                 if (!is_valid_ether_addr(ibss.bssid))
8805                         return -EINVAL;
8806         }
8807         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8808         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8809
8810         if (info->attrs[NL80211_ATTR_IE]) {
8811                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8812                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8813         }
8814
8815         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8816         if (err)
8817                 return err;
8818
8819         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8820                                      NL80211_IFTYPE_ADHOC))
8821                 return -EINVAL;
8822
8823         switch (ibss.chandef.width) {
8824         case NL80211_CHAN_WIDTH_5:
8825         case NL80211_CHAN_WIDTH_10:
8826         case NL80211_CHAN_WIDTH_20_NOHT:
8827                 break;
8828         case NL80211_CHAN_WIDTH_20:
8829         case NL80211_CHAN_WIDTH_40:
8830                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8831                         return -EINVAL;
8832                 break;
8833         case NL80211_CHAN_WIDTH_80:
8834         case NL80211_CHAN_WIDTH_80P80:
8835         case NL80211_CHAN_WIDTH_160:
8836                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8837                         return -EINVAL;
8838                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8839                                              NL80211_EXT_FEATURE_VHT_IBSS))
8840                         return -EINVAL;
8841                 break;
8842         default:
8843                 return -EINVAL;
8844         }
8845
8846         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8847         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8848
8849         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8850                 u8 *rates =
8851                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8852                 int n_rates =
8853                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8854                 struct ieee80211_supported_band *sband =
8855                         wiphy->bands[ibss.chandef.chan->band];
8856
8857                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8858                                              &ibss.basic_rates);
8859                 if (err)
8860                         return err;
8861         }
8862
8863         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8864                 memcpy(&ibss.ht_capa_mask,
8865                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8866                        sizeof(ibss.ht_capa_mask));
8867
8868         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8869                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8870                         return -EINVAL;
8871                 memcpy(&ibss.ht_capa,
8872                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8873                        sizeof(ibss.ht_capa));
8874         }
8875
8876         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8877             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8878                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8879                 return -EINVAL;
8880
8881         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8882                 bool no_ht = false;
8883
8884                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
8885                 if (IS_ERR(connkeys))
8886                         return PTR_ERR(connkeys);
8887
8888                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8889                     no_ht) {
8890                         kzfree(connkeys);
8891                         return -EINVAL;
8892                 }
8893         }
8894
8895         ibss.control_port =
8896                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8897
8898         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8899                 int r = validate_pae_over_nl80211(rdev, info);
8900
8901                 if (r < 0)
8902                         return r;
8903
8904                 ibss.control_port_over_nl80211 = true;
8905         }
8906
8907         ibss.userspace_handles_dfs =
8908                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8909
8910         wdev_lock(dev->ieee80211_ptr);
8911         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8912         if (err)
8913                 kzfree(connkeys);
8914         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8915                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
8916         wdev_unlock(dev->ieee80211_ptr);
8917
8918         return err;
8919 }
8920
8921 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8922 {
8923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8924         struct net_device *dev = info->user_ptr[1];
8925
8926         if (!rdev->ops->leave_ibss)
8927                 return -EOPNOTSUPP;
8928
8929         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8930                 return -EOPNOTSUPP;
8931
8932         return cfg80211_leave_ibss(rdev, dev, false);
8933 }
8934
8935 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8936 {
8937         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8938         struct net_device *dev = info->user_ptr[1];
8939         int mcast_rate[NUM_NL80211_BANDS];
8940         u32 nla_rate;
8941         int err;
8942
8943         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8944             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8945             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8946                 return -EOPNOTSUPP;
8947
8948         if (!rdev->ops->set_mcast_rate)
8949                 return -EOPNOTSUPP;
8950
8951         memset(mcast_rate, 0, sizeof(mcast_rate));
8952
8953         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8954                 return -EINVAL;
8955
8956         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8957         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8958                 return -EINVAL;
8959
8960         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8961
8962         return err;
8963 }
8964
8965 static struct sk_buff *
8966 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8967                             struct wireless_dev *wdev, int approxlen,
8968                             u32 portid, u32 seq, enum nl80211_commands cmd,
8969                             enum nl80211_attrs attr,
8970                             const struct nl80211_vendor_cmd_info *info,
8971                             gfp_t gfp)
8972 {
8973         struct sk_buff *skb;
8974         void *hdr;
8975         struct nlattr *data;
8976
8977         skb = nlmsg_new(approxlen + 100, gfp);
8978         if (!skb)
8979                 return NULL;
8980
8981         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8982         if (!hdr) {
8983                 kfree_skb(skb);
8984                 return NULL;
8985         }
8986
8987         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8988                 goto nla_put_failure;
8989
8990         if (info) {
8991                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8992                                 info->vendor_id))
8993                         goto nla_put_failure;
8994                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8995                                 info->subcmd))
8996                         goto nla_put_failure;
8997         }
8998
8999         if (wdev) {
9000                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9001                                       wdev_id(wdev), NL80211_ATTR_PAD))
9002                         goto nla_put_failure;
9003                 if (wdev->netdev &&
9004                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9005                                 wdev->netdev->ifindex))
9006                         goto nla_put_failure;
9007         }
9008
9009         data = nla_nest_start(skb, attr);
9010         if (!data)
9011                 goto nla_put_failure;
9012
9013         ((void **)skb->cb)[0] = rdev;
9014         ((void **)skb->cb)[1] = hdr;
9015         ((void **)skb->cb)[2] = data;
9016
9017         return skb;
9018
9019  nla_put_failure:
9020         kfree_skb(skb);
9021         return NULL;
9022 }
9023
9024 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9025                                            struct wireless_dev *wdev,
9026                                            enum nl80211_commands cmd,
9027                                            enum nl80211_attrs attr,
9028                                            int vendor_event_idx,
9029                                            int approxlen, gfp_t gfp)
9030 {
9031         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9032         const struct nl80211_vendor_cmd_info *info;
9033
9034         switch (cmd) {
9035         case NL80211_CMD_TESTMODE:
9036                 if (WARN_ON(vendor_event_idx != -1))
9037                         return NULL;
9038                 info = NULL;
9039                 break;
9040         case NL80211_CMD_VENDOR:
9041                 if (WARN_ON(vendor_event_idx < 0 ||
9042                             vendor_event_idx >= wiphy->n_vendor_events))
9043                         return NULL;
9044                 info = &wiphy->vendor_events[vendor_event_idx];
9045                 break;
9046         default:
9047                 WARN_ON(1);
9048                 return NULL;
9049         }
9050
9051         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
9052                                            cmd, attr, info, gfp);
9053 }
9054 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9055
9056 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9057 {
9058         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9059         void *hdr = ((void **)skb->cb)[1];
9060         struct nlattr *data = ((void **)skb->cb)[2];
9061         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9062
9063         /* clear CB data for netlink core to own from now on */
9064         memset(skb->cb, 0, sizeof(skb->cb));
9065
9066         nla_nest_end(skb, data);
9067         genlmsg_end(skb, hdr);
9068
9069         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9070                 mcgrp = NL80211_MCGRP_VENDOR;
9071
9072         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
9073                                 mcgrp, gfp);
9074 }
9075 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9076
9077 #ifdef CONFIG_NL80211_TESTMODE
9078 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9079 {
9080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9081         struct wireless_dev *wdev =
9082                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9083         int err;
9084
9085         if (!rdev->ops->testmode_cmd)
9086                 return -EOPNOTSUPP;
9087
9088         if (IS_ERR(wdev)) {
9089                 err = PTR_ERR(wdev);
9090                 if (err != -EINVAL)
9091                         return err;
9092                 wdev = NULL;
9093         } else if (wdev->wiphy != &rdev->wiphy) {
9094                 return -EINVAL;
9095         }
9096
9097         if (!info->attrs[NL80211_ATTR_TESTDATA])
9098                 return -EINVAL;
9099
9100         rdev->cur_cmd_info = info;
9101         err = rdev_testmode_cmd(rdev, wdev,
9102                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9103                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9104         rdev->cur_cmd_info = NULL;
9105
9106         return err;
9107 }
9108
9109 static int nl80211_testmode_dump(struct sk_buff *skb,
9110                                  struct netlink_callback *cb)
9111 {
9112         struct cfg80211_registered_device *rdev;
9113         int err;
9114         long phy_idx;
9115         void *data = NULL;
9116         int data_len = 0;
9117
9118         rtnl_lock();
9119
9120         if (cb->args[0]) {
9121                 /*
9122                  * 0 is a valid index, but not valid for args[0],
9123                  * so we need to offset by 1.
9124                  */
9125                 phy_idx = cb->args[0] - 1;
9126
9127                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9128                 if (!rdev) {
9129                         err = -ENOENT;
9130                         goto out_err;
9131                 }
9132         } else {
9133                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9134
9135                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9136                                   attrbuf, nl80211_fam.maxattr,
9137                                   nl80211_policy, NULL);
9138                 if (err)
9139                         goto out_err;
9140
9141                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9142                 if (IS_ERR(rdev)) {
9143                         err = PTR_ERR(rdev);
9144                         goto out_err;
9145                 }
9146                 phy_idx = rdev->wiphy_idx;
9147
9148                 if (attrbuf[NL80211_ATTR_TESTDATA])
9149                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9150         }
9151
9152         if (cb->args[1]) {
9153                 data = nla_data((void *)cb->args[1]);
9154                 data_len = nla_len((void *)cb->args[1]);
9155         }
9156
9157         if (!rdev->ops->testmode_dump) {
9158                 err = -EOPNOTSUPP;
9159                 goto out_err;
9160         }
9161
9162         while (1) {
9163                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9164                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9165                                            NL80211_CMD_TESTMODE);
9166                 struct nlattr *tmdata;
9167
9168                 if (!hdr)
9169                         break;
9170
9171                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9172                         genlmsg_cancel(skb, hdr);
9173                         break;
9174                 }
9175
9176                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9177                 if (!tmdata) {
9178                         genlmsg_cancel(skb, hdr);
9179                         break;
9180                 }
9181                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9182                 nla_nest_end(skb, tmdata);
9183
9184                 if (err == -ENOBUFS || err == -ENOENT) {
9185                         genlmsg_cancel(skb, hdr);
9186                         break;
9187                 } else if (err) {
9188                         genlmsg_cancel(skb, hdr);
9189                         goto out_err;
9190                 }
9191
9192                 genlmsg_end(skb, hdr);
9193         }
9194
9195         err = skb->len;
9196         /* see above */
9197         cb->args[0] = phy_idx + 1;
9198  out_err:
9199         rtnl_unlock();
9200         return err;
9201 }
9202 #endif
9203
9204 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9205 {
9206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9207         struct net_device *dev = info->user_ptr[1];
9208         struct cfg80211_connect_params connect;
9209         struct wiphy *wiphy;
9210         struct cfg80211_cached_keys *connkeys = NULL;
9211         int err;
9212
9213         memset(&connect, 0, sizeof(connect));
9214
9215         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9216                 return -EINVAL;
9217
9218         if (!info->attrs[NL80211_ATTR_SSID] ||
9219             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9220                 return -EINVAL;
9221
9222         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9223                 connect.auth_type =
9224                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9225                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9226                                              NL80211_CMD_CONNECT))
9227                         return -EINVAL;
9228         } else
9229                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9230
9231         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9232
9233         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9234             !wiphy_ext_feature_isset(&rdev->wiphy,
9235                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9236                 return -EINVAL;
9237         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9238
9239         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9240                                       NL80211_MAX_NR_CIPHER_SUITES);
9241         if (err)
9242                 return err;
9243
9244         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9245             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9246                 return -EOPNOTSUPP;
9247
9248         wiphy = &rdev->wiphy;
9249
9250         connect.bg_scan_period = -1;
9251         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9252                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9253                 connect.bg_scan_period =
9254                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9255         }
9256
9257         if (info->attrs[NL80211_ATTR_MAC])
9258                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9259         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9260                 connect.bssid_hint =
9261                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9262         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9263         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9264
9265         if (info->attrs[NL80211_ATTR_IE]) {
9266                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9267                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9268         }
9269
9270         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9271                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9272                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9273                     !wiphy_ext_feature_isset(&rdev->wiphy,
9274                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9275                         return -EOPNOTSUPP;
9276
9277                 if (connect.mfp != NL80211_MFP_REQUIRED &&
9278                     connect.mfp != NL80211_MFP_NO &&
9279                     connect.mfp != NL80211_MFP_OPTIONAL)
9280                         return -EINVAL;
9281         } else {
9282                 connect.mfp = NL80211_MFP_NO;
9283         }
9284
9285         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9286                 connect.prev_bssid =
9287                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9288
9289         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9290                 connect.channel = nl80211_get_valid_chan(
9291                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9292                 if (!connect.channel)
9293                         return -EINVAL;
9294         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9295                 connect.channel_hint = nl80211_get_valid_chan(
9296                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9297                 if (!connect.channel_hint)
9298                         return -EINVAL;
9299         }
9300
9301         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9302                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9303                 if (IS_ERR(connkeys))
9304                         return PTR_ERR(connkeys);
9305         }
9306
9307         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9308                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9309
9310         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9311                 memcpy(&connect.ht_capa_mask,
9312                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9313                        sizeof(connect.ht_capa_mask));
9314
9315         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9316                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9317                         kzfree(connkeys);
9318                         return -EINVAL;
9319                 }
9320                 memcpy(&connect.ht_capa,
9321                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9322                        sizeof(connect.ht_capa));
9323         }
9324
9325         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9326                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9327
9328         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9329                 memcpy(&connect.vht_capa_mask,
9330                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9331                        sizeof(connect.vht_capa_mask));
9332
9333         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9334                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9335                         kzfree(connkeys);
9336                         return -EINVAL;
9337                 }
9338                 memcpy(&connect.vht_capa,
9339                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9340                        sizeof(connect.vht_capa));
9341         }
9342
9343         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9344                 if (!((rdev->wiphy.features &
9345                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9346                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9347                     !wiphy_ext_feature_isset(&rdev->wiphy,
9348                                              NL80211_EXT_FEATURE_RRM)) {
9349                         kzfree(connkeys);
9350                         return -EINVAL;
9351                 }
9352                 connect.flags |= ASSOC_REQ_USE_RRM;
9353         }
9354
9355         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9356         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9357                 kzfree(connkeys);
9358                 return -EOPNOTSUPP;
9359         }
9360
9361         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9362                 /* bss selection makes no sense if bssid is set */
9363                 if (connect.bssid) {
9364                         kzfree(connkeys);
9365                         return -EINVAL;
9366                 }
9367
9368                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9369                                        wiphy, &connect.bss_select);
9370                 if (err) {
9371                         kzfree(connkeys);
9372                         return err;
9373                 }
9374         }
9375
9376         if (wiphy_ext_feature_isset(&rdev->wiphy,
9377                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9378             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9379             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9380             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9381             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9382                 connect.fils_erp_username =
9383                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9384                 connect.fils_erp_username_len =
9385                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9386                 connect.fils_erp_realm =
9387                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9388                 connect.fils_erp_realm_len =
9389                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9390                 connect.fils_erp_next_seq_num =
9391                         nla_get_u16(
9392                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9393                 connect.fils_erp_rrk =
9394                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9395                 connect.fils_erp_rrk_len =
9396                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9397         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9398                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9399                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9400                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9401                 kzfree(connkeys);
9402                 return -EINVAL;
9403         }
9404
9405         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9406                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9407                         kzfree(connkeys);
9408                         GENL_SET_ERR_MSG(info,
9409                                          "external auth requires connection ownership");
9410                         return -EINVAL;
9411                 }
9412                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9413         }
9414
9415         wdev_lock(dev->ieee80211_ptr);
9416
9417         err = cfg80211_connect(rdev, dev, &connect, connkeys,
9418                                connect.prev_bssid);
9419         if (err)
9420                 kzfree(connkeys);
9421
9422         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9423                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9424                 if (connect.bssid)
9425                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9426                                connect.bssid, ETH_ALEN);
9427                 else
9428                         memset(dev->ieee80211_ptr->disconnect_bssid,
9429                                0, ETH_ALEN);
9430         }
9431
9432         wdev_unlock(dev->ieee80211_ptr);
9433
9434         return err;
9435 }
9436
9437 static int nl80211_update_connect_params(struct sk_buff *skb,
9438                                          struct genl_info *info)
9439 {
9440         struct cfg80211_connect_params connect = {};
9441         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9442         struct net_device *dev = info->user_ptr[1];
9443         struct wireless_dev *wdev = dev->ieee80211_ptr;
9444         bool fils_sk_offload;
9445         u32 auth_type;
9446         u32 changed = 0;
9447         int ret;
9448
9449         if (!rdev->ops->update_connect_params)
9450                 return -EOPNOTSUPP;
9451
9452         if (info->attrs[NL80211_ATTR_IE]) {
9453                 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9454                         return -EINVAL;
9455                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9456                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9457                 changed |= UPDATE_ASSOC_IES;
9458         }
9459
9460         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9461                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9462
9463         /*
9464          * when driver supports fils-sk offload all attributes must be
9465          * provided. So the else covers "fils-sk-not-all" and
9466          * "no-fils-sk-any".
9467          */
9468         if (fils_sk_offload &&
9469             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9470             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9471             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9472             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9473                 connect.fils_erp_username =
9474                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9475                 connect.fils_erp_username_len =
9476                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9477                 connect.fils_erp_realm =
9478                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9479                 connect.fils_erp_realm_len =
9480                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9481                 connect.fils_erp_next_seq_num =
9482                         nla_get_u16(
9483                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9484                 connect.fils_erp_rrk =
9485                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9486                 connect.fils_erp_rrk_len =
9487                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9488                 changed |= UPDATE_FILS_ERP_INFO;
9489         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9490                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9491                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9492                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9493                 return -EINVAL;
9494         }
9495
9496         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9497                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9498                 if (!nl80211_valid_auth_type(rdev, auth_type,
9499                                              NL80211_CMD_CONNECT))
9500                         return -EINVAL;
9501
9502                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9503                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9504                         return -EINVAL;
9505
9506                 connect.auth_type = auth_type;
9507                 changed |= UPDATE_AUTH_TYPE;
9508         }
9509
9510         wdev_lock(dev->ieee80211_ptr);
9511         if (!wdev->current_bss)
9512                 ret = -ENOLINK;
9513         else
9514                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9515         wdev_unlock(dev->ieee80211_ptr);
9516
9517         return ret;
9518 }
9519
9520 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9521 {
9522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9523         struct net_device *dev = info->user_ptr[1];
9524         u16 reason;
9525         int ret;
9526
9527         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9528             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9529                 return -EPERM;
9530
9531         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9532                 reason = WLAN_REASON_DEAUTH_LEAVING;
9533         else
9534                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9535
9536         if (reason == 0)
9537                 return -EINVAL;
9538
9539         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9540             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9541                 return -EOPNOTSUPP;
9542
9543         wdev_lock(dev->ieee80211_ptr);
9544         ret = cfg80211_disconnect(rdev, dev, reason, true);
9545         wdev_unlock(dev->ieee80211_ptr);
9546         return ret;
9547 }
9548
9549 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9550 {
9551         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9552         struct net *net;
9553         int err;
9554
9555         if (info->attrs[NL80211_ATTR_PID]) {
9556                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9557
9558                 net = get_net_ns_by_pid(pid);
9559         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9560                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9561
9562                 net = get_net_ns_by_fd(fd);
9563         } else {
9564                 return -EINVAL;
9565         }
9566
9567         if (IS_ERR(net))
9568                 return PTR_ERR(net);
9569
9570         err = 0;
9571
9572         /* check if anything to do */
9573         if (!net_eq(wiphy_net(&rdev->wiphy), net))
9574                 err = cfg80211_switch_netns(rdev, net);
9575
9576         put_net(net);
9577         return err;
9578 }
9579
9580 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9581 {
9582         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9583         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9584                         struct cfg80211_pmksa *pmksa) = NULL;
9585         struct net_device *dev = info->user_ptr[1];
9586         struct cfg80211_pmksa pmksa;
9587
9588         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9589
9590         if (!info->attrs[NL80211_ATTR_PMKID])
9591                 return -EINVAL;
9592
9593         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9594
9595         if (info->attrs[NL80211_ATTR_MAC]) {
9596                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9597         } else if (info->attrs[NL80211_ATTR_SSID] &&
9598                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9599                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9600                     info->attrs[NL80211_ATTR_PMK])) {
9601                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9602                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9603                 pmksa.cache_id =
9604                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9605         } else {
9606                 return -EINVAL;
9607         }
9608         if (info->attrs[NL80211_ATTR_PMK]) {
9609                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9610                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9611         }
9612
9613         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9614             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9615                 return -EOPNOTSUPP;
9616
9617         switch (info->genlhdr->cmd) {
9618         case NL80211_CMD_SET_PMKSA:
9619                 rdev_ops = rdev->ops->set_pmksa;
9620                 break;
9621         case NL80211_CMD_DEL_PMKSA:
9622                 rdev_ops = rdev->ops->del_pmksa;
9623                 break;
9624         default:
9625                 WARN_ON(1);
9626                 break;
9627         }
9628
9629         if (!rdev_ops)
9630                 return -EOPNOTSUPP;
9631
9632         return rdev_ops(&rdev->wiphy, dev, &pmksa);
9633 }
9634
9635 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9636 {
9637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9638         struct net_device *dev = info->user_ptr[1];
9639
9640         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9641             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9642                 return -EOPNOTSUPP;
9643
9644         if (!rdev->ops->flush_pmksa)
9645                 return -EOPNOTSUPP;
9646
9647         return rdev_flush_pmksa(rdev, dev);
9648 }
9649
9650 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9651 {
9652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9653         struct net_device *dev = info->user_ptr[1];
9654         u8 action_code, dialog_token;
9655         u32 peer_capability = 0;
9656         u16 status_code;
9657         u8 *peer;
9658         bool initiator;
9659
9660         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9661             !rdev->ops->tdls_mgmt)
9662                 return -EOPNOTSUPP;
9663
9664         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9665             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9666             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9667             !info->attrs[NL80211_ATTR_IE] ||
9668             !info->attrs[NL80211_ATTR_MAC])
9669                 return -EINVAL;
9670
9671         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9672         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9673         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9674         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9675         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9676         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9677                 peer_capability =
9678                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9679
9680         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9681                               dialog_token, status_code, peer_capability,
9682                               initiator,
9683                               nla_data(info->attrs[NL80211_ATTR_IE]),
9684                               nla_len(info->attrs[NL80211_ATTR_IE]));
9685 }
9686
9687 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9688 {
9689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9690         struct net_device *dev = info->user_ptr[1];
9691         enum nl80211_tdls_operation operation;
9692         u8 *peer;
9693
9694         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9695             !rdev->ops->tdls_oper)
9696                 return -EOPNOTSUPP;
9697
9698         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9699             !info->attrs[NL80211_ATTR_MAC])
9700                 return -EINVAL;
9701
9702         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9703         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9704
9705         return rdev_tdls_oper(rdev, dev, peer, operation);
9706 }
9707
9708 static int nl80211_remain_on_channel(struct sk_buff *skb,
9709                                      struct genl_info *info)
9710 {
9711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9712         struct wireless_dev *wdev = info->user_ptr[1];
9713         struct cfg80211_chan_def chandef;
9714         const struct cfg80211_chan_def *compat_chandef;
9715         struct sk_buff *msg;
9716         void *hdr;
9717         u64 cookie;
9718         u32 duration;
9719         int err;
9720
9721         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9722             !info->attrs[NL80211_ATTR_DURATION])
9723                 return -EINVAL;
9724
9725         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9726
9727         if (!rdev->ops->remain_on_channel ||
9728             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9729                 return -EOPNOTSUPP;
9730
9731         /*
9732          * We should be on that channel for at least a minimum amount of
9733          * time (10ms) but no longer than the driver supports.
9734          */
9735         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9736             duration > rdev->wiphy.max_remain_on_channel_duration)
9737                 return -EINVAL;
9738
9739         err = nl80211_parse_chandef(rdev, info, &chandef);
9740         if (err)
9741                 return err;
9742
9743         wdev_lock(wdev);
9744         if (!cfg80211_off_channel_oper_allowed(wdev) &&
9745             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9746                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9747                                                              &chandef);
9748                 if (compat_chandef != &chandef) {
9749                         wdev_unlock(wdev);
9750                         return -EBUSY;
9751                 }
9752         }
9753         wdev_unlock(wdev);
9754
9755         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9756         if (!msg)
9757                 return -ENOMEM;
9758
9759         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9760                              NL80211_CMD_REMAIN_ON_CHANNEL);
9761         if (!hdr) {
9762                 err = -ENOBUFS;
9763                 goto free_msg;
9764         }
9765
9766         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9767                                      duration, &cookie);
9768
9769         if (err)
9770                 goto free_msg;
9771
9772         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9773                               NL80211_ATTR_PAD))
9774                 goto nla_put_failure;
9775
9776         genlmsg_end(msg, hdr);
9777
9778         return genlmsg_reply(msg, info);
9779
9780  nla_put_failure:
9781         err = -ENOBUFS;
9782  free_msg:
9783         nlmsg_free(msg);
9784         return err;
9785 }
9786
9787 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9788                                             struct genl_info *info)
9789 {
9790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9791         struct wireless_dev *wdev = info->user_ptr[1];
9792         u64 cookie;
9793
9794         if (!info->attrs[NL80211_ATTR_COOKIE])
9795                 return -EINVAL;
9796
9797         if (!rdev->ops->cancel_remain_on_channel)
9798                 return -EOPNOTSUPP;
9799
9800         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9801
9802         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9803 }
9804
9805 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9806                                        struct genl_info *info)
9807 {
9808         struct cfg80211_bitrate_mask mask;
9809         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9810         struct net_device *dev = info->user_ptr[1];
9811         int err;
9812
9813         if (!rdev->ops->set_bitrate_mask)
9814                 return -EOPNOTSUPP;
9815
9816         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9817         if (err)
9818                 return err;
9819
9820         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9821 }
9822
9823 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9824 {
9825         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9826         struct wireless_dev *wdev = info->user_ptr[1];
9827         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9828
9829         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9830                 return -EINVAL;
9831
9832         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9833                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9834
9835         switch (wdev->iftype) {
9836         case NL80211_IFTYPE_STATION:
9837         case NL80211_IFTYPE_ADHOC:
9838         case NL80211_IFTYPE_P2P_CLIENT:
9839         case NL80211_IFTYPE_AP:
9840         case NL80211_IFTYPE_AP_VLAN:
9841         case NL80211_IFTYPE_MESH_POINT:
9842         case NL80211_IFTYPE_P2P_GO:
9843         case NL80211_IFTYPE_P2P_DEVICE:
9844                 break;
9845         case NL80211_IFTYPE_NAN:
9846         default:
9847                 return -EOPNOTSUPP;
9848         }
9849
9850         /* not much point in registering if we can't reply */
9851         if (!rdev->ops->mgmt_tx)
9852                 return -EOPNOTSUPP;
9853
9854         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9855                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9856                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9857 }
9858
9859 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9860 {
9861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9862         struct wireless_dev *wdev = info->user_ptr[1];
9863         struct cfg80211_chan_def chandef;
9864         int err;
9865         void *hdr = NULL;
9866         u64 cookie;
9867         struct sk_buff *msg = NULL;
9868         struct cfg80211_mgmt_tx_params params = {
9869                 .dont_wait_for_ack =
9870                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9871         };
9872
9873         if (!info->attrs[NL80211_ATTR_FRAME])
9874                 return -EINVAL;
9875
9876         if (!rdev->ops->mgmt_tx)
9877                 return -EOPNOTSUPP;
9878
9879         switch (wdev->iftype) {
9880         case NL80211_IFTYPE_P2P_DEVICE:
9881                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9882                         return -EINVAL;
9883         case NL80211_IFTYPE_STATION:
9884         case NL80211_IFTYPE_ADHOC:
9885         case NL80211_IFTYPE_P2P_CLIENT:
9886         case NL80211_IFTYPE_AP:
9887         case NL80211_IFTYPE_AP_VLAN:
9888         case NL80211_IFTYPE_MESH_POINT:
9889         case NL80211_IFTYPE_P2P_GO:
9890                 break;
9891         case NL80211_IFTYPE_NAN:
9892         default:
9893                 return -EOPNOTSUPP;
9894         }
9895
9896         if (info->attrs[NL80211_ATTR_DURATION]) {
9897                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9898                         return -EINVAL;
9899                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9900
9901                 /*
9902                  * We should wait on the channel for at least a minimum amount
9903                  * of time (10ms) but no longer than the driver supports.
9904                  */
9905                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9906                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
9907                         return -EINVAL;
9908         }
9909
9910         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9911
9912         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9913                 return -EINVAL;
9914
9915         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9916
9917         /* get the channel if any has been specified, otherwise pass NULL to
9918          * the driver. The latter will use the current one
9919          */
9920         chandef.chan = NULL;
9921         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9922                 err = nl80211_parse_chandef(rdev, info, &chandef);
9923                 if (err)
9924                         return err;
9925         }
9926
9927         if (!chandef.chan && params.offchan)
9928                 return -EINVAL;
9929
9930         wdev_lock(wdev);
9931         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9932                 wdev_unlock(wdev);
9933                 return -EBUSY;
9934         }
9935         wdev_unlock(wdev);
9936
9937         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9938         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9939
9940         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9941                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9942                 int i;
9943
9944                 if (len % sizeof(u16))
9945                         return -EINVAL;
9946
9947                 params.n_csa_offsets = len / sizeof(u16);
9948                 params.csa_offsets =
9949                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9950
9951                 /* check that all the offsets fit the frame */
9952                 for (i = 0; i < params.n_csa_offsets; i++) {
9953                         if (params.csa_offsets[i] >= params.len)
9954                                 return -EINVAL;
9955                 }
9956         }
9957
9958         if (!params.dont_wait_for_ack) {
9959                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9960                 if (!msg)
9961                         return -ENOMEM;
9962
9963                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9964                                      NL80211_CMD_FRAME);
9965                 if (!hdr) {
9966                         err = -ENOBUFS;
9967                         goto free_msg;
9968                 }
9969         }
9970
9971         params.chan = chandef.chan;
9972         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9973         if (err)
9974                 goto free_msg;
9975
9976         if (msg) {
9977                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9978                                       NL80211_ATTR_PAD))
9979                         goto nla_put_failure;
9980
9981                 genlmsg_end(msg, hdr);
9982                 return genlmsg_reply(msg, info);
9983         }
9984
9985         return 0;
9986
9987  nla_put_failure:
9988         err = -ENOBUFS;
9989  free_msg:
9990         nlmsg_free(msg);
9991         return err;
9992 }
9993
9994 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9995 {
9996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9997         struct wireless_dev *wdev = info->user_ptr[1];
9998         u64 cookie;
9999
10000         if (!info->attrs[NL80211_ATTR_COOKIE])
10001                 return -EINVAL;
10002
10003         if (!rdev->ops->mgmt_tx_cancel_wait)
10004                 return -EOPNOTSUPP;
10005
10006         switch (wdev->iftype) {
10007         case NL80211_IFTYPE_STATION:
10008         case NL80211_IFTYPE_ADHOC:
10009         case NL80211_IFTYPE_P2P_CLIENT:
10010         case NL80211_IFTYPE_AP:
10011         case NL80211_IFTYPE_AP_VLAN:
10012         case NL80211_IFTYPE_P2P_GO:
10013         case NL80211_IFTYPE_P2P_DEVICE:
10014                 break;
10015         case NL80211_IFTYPE_NAN:
10016         default:
10017                 return -EOPNOTSUPP;
10018         }
10019
10020         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10021
10022         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10023 }
10024
10025 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10026 {
10027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10028         struct wireless_dev *wdev;
10029         struct net_device *dev = info->user_ptr[1];
10030         u8 ps_state;
10031         bool state;
10032         int err;
10033
10034         if (!info->attrs[NL80211_ATTR_PS_STATE])
10035                 return -EINVAL;
10036
10037         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10038
10039         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
10040                 return -EINVAL;
10041
10042         wdev = dev->ieee80211_ptr;
10043
10044         if (!rdev->ops->set_power_mgmt)
10045                 return -EOPNOTSUPP;
10046
10047         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10048
10049         if (state == wdev->ps)
10050                 return 0;
10051
10052         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10053         if (!err)
10054                 wdev->ps = state;
10055         return err;
10056 }
10057
10058 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10059 {
10060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10061         enum nl80211_ps_state ps_state;
10062         struct wireless_dev *wdev;
10063         struct net_device *dev = info->user_ptr[1];
10064         struct sk_buff *msg;
10065         void *hdr;
10066         int err;
10067
10068         wdev = dev->ieee80211_ptr;
10069
10070         if (!rdev->ops->set_power_mgmt)
10071                 return -EOPNOTSUPP;
10072
10073         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10074         if (!msg)
10075                 return -ENOMEM;
10076
10077         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10078                              NL80211_CMD_GET_POWER_SAVE);
10079         if (!hdr) {
10080                 err = -ENOBUFS;
10081                 goto free_msg;
10082         }
10083
10084         if (wdev->ps)
10085                 ps_state = NL80211_PS_ENABLED;
10086         else
10087                 ps_state = NL80211_PS_DISABLED;
10088
10089         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10090                 goto nla_put_failure;
10091
10092         genlmsg_end(msg, hdr);
10093         return genlmsg_reply(msg, info);
10094
10095  nla_put_failure:
10096         err = -ENOBUFS;
10097  free_msg:
10098         nlmsg_free(msg);
10099         return err;
10100 }
10101
10102 static const struct nla_policy
10103 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10104         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10105         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10106         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10107         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10108         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10109         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10110         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10111 };
10112
10113 static int nl80211_set_cqm_txe(struct genl_info *info,
10114                                u32 rate, u32 pkts, u32 intvl)
10115 {
10116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10117         struct net_device *dev = info->user_ptr[1];
10118         struct wireless_dev *wdev = dev->ieee80211_ptr;
10119
10120         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10121                 return -EINVAL;
10122
10123         if (!rdev->ops->set_cqm_txe_config)
10124                 return -EOPNOTSUPP;
10125
10126         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10127             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10128                 return -EOPNOTSUPP;
10129
10130         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10131 }
10132
10133 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10134                                     struct net_device *dev)
10135 {
10136         struct wireless_dev *wdev = dev->ieee80211_ptr;
10137         s32 last, low, high;
10138         u32 hyst;
10139         int i, n;
10140         int err;
10141
10142         /* RSSI reporting disabled? */
10143         if (!wdev->cqm_config)
10144                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10145
10146         /*
10147          * Obtain current RSSI value if possible, if not and no RSSI threshold
10148          * event has been received yet, we should receive an event after a
10149          * connection is established and enough beacons received to calculate
10150          * the average.
10151          */
10152         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10153             rdev->ops->get_station) {
10154                 struct station_info sinfo = {};
10155                 u8 *mac_addr;
10156
10157                 mac_addr = wdev->current_bss->pub.bssid;
10158
10159                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10160                 if (err)
10161                         return err;
10162
10163                 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10164                         wdev->cqm_config->last_rssi_event_value =
10165                                 (s8) sinfo.rx_beacon_signal_avg;
10166         }
10167
10168         last = wdev->cqm_config->last_rssi_event_value;
10169         hyst = wdev->cqm_config->rssi_hyst;
10170         n = wdev->cqm_config->n_rssi_thresholds;
10171
10172         for (i = 0; i < n; i++)
10173                 if (last < wdev->cqm_config->rssi_thresholds[i])
10174                         break;
10175
10176         low = i > 0 ?
10177                 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
10178         high = i < n ?
10179                 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
10180
10181         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10182 }
10183
10184 static int nl80211_set_cqm_rssi(struct genl_info *info,
10185                                 const s32 *thresholds, int n_thresholds,
10186                                 u32 hysteresis)
10187 {
10188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10189         struct net_device *dev = info->user_ptr[1];
10190         struct wireless_dev *wdev = dev->ieee80211_ptr;
10191         int i, err;
10192         s32 prev = S32_MIN;
10193
10194         /* Check all values negative and sorted */
10195         for (i = 0; i < n_thresholds; i++) {
10196                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10197                         return -EINVAL;
10198
10199                 prev = thresholds[i];
10200         }
10201
10202         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10203             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10204                 return -EOPNOTSUPP;
10205
10206         wdev_lock(wdev);
10207         cfg80211_cqm_config_free(wdev);
10208         wdev_unlock(wdev);
10209
10210         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10211                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10212                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10213
10214                 return rdev_set_cqm_rssi_config(rdev, dev,
10215                                                 thresholds[0], hysteresis);
10216         }
10217
10218         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10219                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10220                 return -EOPNOTSUPP;
10221
10222         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10223                 n_thresholds = 0;
10224
10225         wdev_lock(wdev);
10226         if (n_thresholds) {
10227                 struct cfg80211_cqm_config *cqm_config;
10228
10229                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10230                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10231                 if (!cqm_config) {
10232                         err = -ENOMEM;
10233                         goto unlock;
10234                 }
10235
10236                 cqm_config->rssi_hyst = hysteresis;
10237                 cqm_config->n_rssi_thresholds = n_thresholds;
10238                 memcpy(cqm_config->rssi_thresholds, thresholds,
10239                        n_thresholds * sizeof(s32));
10240
10241                 wdev->cqm_config = cqm_config;
10242         }
10243
10244         err = cfg80211_cqm_rssi_update(rdev, dev);
10245
10246 unlock:
10247         wdev_unlock(wdev);
10248
10249         return err;
10250 }
10251
10252 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10253 {
10254         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10255         struct nlattr *cqm;
10256         int err;
10257
10258         cqm = info->attrs[NL80211_ATTR_CQM];
10259         if (!cqm)
10260                 return -EINVAL;
10261
10262         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10263                                nl80211_attr_cqm_policy, info->extack);
10264         if (err)
10265                 return err;
10266
10267         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10268             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10269                 const s32 *thresholds =
10270                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10271                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10272                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10273
10274                 if (len % 4)
10275                         return -EINVAL;
10276
10277                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10278                                             hysteresis);
10279         }
10280
10281         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10282             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10283             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10284                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10285                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10286                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10287
10288                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10289         }
10290
10291         return -EINVAL;
10292 }
10293
10294 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10295 {
10296         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10297         struct net_device *dev = info->user_ptr[1];
10298         struct ocb_setup setup = {};
10299         int err;
10300
10301         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10302         if (err)
10303                 return err;
10304
10305         return cfg80211_join_ocb(rdev, dev, &setup);
10306 }
10307
10308 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10309 {
10310         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10311         struct net_device *dev = info->user_ptr[1];
10312
10313         return cfg80211_leave_ocb(rdev, dev);
10314 }
10315
10316 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10317 {
10318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10319         struct net_device *dev = info->user_ptr[1];
10320         struct mesh_config cfg;
10321         struct mesh_setup setup;
10322         int err;
10323
10324         /* start with default */
10325         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10326         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10327
10328         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10329                 /* and parse parameters if given */
10330                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10331                 if (err)
10332                         return err;
10333         }
10334
10335         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10336             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10337                 return -EINVAL;
10338
10339         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10340         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10341
10342         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10343             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10344                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10345                         return -EINVAL;
10346
10347         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10348                 setup.beacon_interval =
10349                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10350
10351                 err = cfg80211_validate_beacon_int(rdev,
10352                                                    NL80211_IFTYPE_MESH_POINT,
10353                                                    setup.beacon_interval);
10354                 if (err)
10355                         return err;
10356         }
10357
10358         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10359                 setup.dtim_period =
10360                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10361                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10362                         return -EINVAL;
10363         }
10364
10365         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10366                 /* parse additional setup parameters if given */
10367                 err = nl80211_parse_mesh_setup(info, &setup);
10368                 if (err)
10369                         return err;
10370         }
10371
10372         if (setup.user_mpm)
10373                 cfg.auto_open_plinks = false;
10374
10375         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10376                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10377                 if (err)
10378                         return err;
10379         } else {
10380                 /* __cfg80211_join_mesh() will sort it out */
10381                 setup.chandef.chan = NULL;
10382         }
10383
10384         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10385                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10386                 int n_rates =
10387                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10388                 struct ieee80211_supported_band *sband;
10389
10390                 if (!setup.chandef.chan)
10391                         return -EINVAL;
10392
10393                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10394
10395                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10396                                              &setup.basic_rates);
10397                 if (err)
10398                         return err;
10399         }
10400
10401         if (info->attrs[NL80211_ATTR_TX_RATES]) {
10402                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10403                 if (err)
10404                         return err;
10405
10406                 if (!setup.chandef.chan)
10407                         return -EINVAL;
10408
10409                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10410                                               &setup.beacon_rate);
10411                 if (err)
10412                         return err;
10413         }
10414
10415         setup.userspace_handles_dfs =
10416                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10417
10418         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10419                 int r = validate_pae_over_nl80211(rdev, info);
10420
10421                 if (r < 0)
10422                         return r;
10423
10424                 setup.control_port_over_nl80211 = true;
10425         }
10426
10427         wdev_lock(dev->ieee80211_ptr);
10428         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10429         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10430                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10431         wdev_unlock(dev->ieee80211_ptr);
10432
10433         return err;
10434 }
10435
10436 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10437 {
10438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10439         struct net_device *dev = info->user_ptr[1];
10440
10441         return cfg80211_leave_mesh(rdev, dev);
10442 }
10443
10444 #ifdef CONFIG_PM
10445 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10446                                         struct cfg80211_registered_device *rdev)
10447 {
10448         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10449         struct nlattr *nl_pats, *nl_pat;
10450         int i, pat_len;
10451
10452         if (!wowlan->n_patterns)
10453                 return 0;
10454
10455         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10456         if (!nl_pats)
10457                 return -ENOBUFS;
10458
10459         for (i = 0; i < wowlan->n_patterns; i++) {
10460                 nl_pat = nla_nest_start(msg, i + 1);
10461                 if (!nl_pat)
10462                         return -ENOBUFS;
10463                 pat_len = wowlan->patterns[i].pattern_len;
10464                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10465                             wowlan->patterns[i].mask) ||
10466                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10467                             wowlan->patterns[i].pattern) ||
10468                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10469                                 wowlan->patterns[i].pkt_offset))
10470                         return -ENOBUFS;
10471                 nla_nest_end(msg, nl_pat);
10472         }
10473         nla_nest_end(msg, nl_pats);
10474
10475         return 0;
10476 }
10477
10478 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10479                                    struct cfg80211_wowlan_tcp *tcp)
10480 {
10481         struct nlattr *nl_tcp;
10482
10483         if (!tcp)
10484                 return 0;
10485
10486         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10487         if (!nl_tcp)
10488                 return -ENOBUFS;
10489
10490         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10491             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10492             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10493             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10494             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10495             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10496                     tcp->payload_len, tcp->payload) ||
10497             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10498                         tcp->data_interval) ||
10499             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10500                     tcp->wake_len, tcp->wake_data) ||
10501             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10502                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10503                 return -ENOBUFS;
10504
10505         if (tcp->payload_seq.len &&
10506             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10507                     sizeof(tcp->payload_seq), &tcp->payload_seq))
10508                 return -ENOBUFS;
10509
10510         if (tcp->payload_tok.len &&
10511             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10512                     sizeof(tcp->payload_tok) + tcp->tokens_size,
10513                     &tcp->payload_tok))
10514                 return -ENOBUFS;
10515
10516         nla_nest_end(msg, nl_tcp);
10517
10518         return 0;
10519 }
10520
10521 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10522                                   struct cfg80211_sched_scan_request *req)
10523 {
10524         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10525         int i;
10526
10527         if (!req)
10528                 return 0;
10529
10530         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10531         if (!nd)
10532                 return -ENOBUFS;
10533
10534         if (req->n_scan_plans == 1 &&
10535             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10536                         req->scan_plans[0].interval * 1000))
10537                 return -ENOBUFS;
10538
10539         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10540                 return -ENOBUFS;
10541
10542         if (req->relative_rssi_set) {
10543                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10544
10545                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10546                                req->relative_rssi))
10547                         return -ENOBUFS;
10548
10549                 rssi_adjust.band = req->rssi_adjust.band;
10550                 rssi_adjust.delta = req->rssi_adjust.delta;
10551                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10552                             sizeof(rssi_adjust), &rssi_adjust))
10553                         return -ENOBUFS;
10554         }
10555
10556         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10557         if (!freqs)
10558                 return -ENOBUFS;
10559
10560         for (i = 0; i < req->n_channels; i++) {
10561                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10562                         return -ENOBUFS;
10563         }
10564
10565         nla_nest_end(msg, freqs);
10566
10567         if (req->n_match_sets) {
10568                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10569                 if (!matches)
10570                         return -ENOBUFS;
10571
10572                 for (i = 0; i < req->n_match_sets; i++) {
10573                         match = nla_nest_start(msg, i);
10574                         if (!match)
10575                                 return -ENOBUFS;
10576
10577                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10578                                     req->match_sets[i].ssid.ssid_len,
10579                                     req->match_sets[i].ssid.ssid))
10580                                 return -ENOBUFS;
10581                         nla_nest_end(msg, match);
10582                 }
10583                 nla_nest_end(msg, matches);
10584         }
10585
10586         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10587         if (!scan_plans)
10588                 return -ENOBUFS;
10589
10590         for (i = 0; i < req->n_scan_plans; i++) {
10591                 scan_plan = nla_nest_start(msg, i + 1);
10592                 if (!scan_plan)
10593                         return -ENOBUFS;
10594
10595                 if (!scan_plan ||
10596                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10597                                 req->scan_plans[i].interval) ||
10598                     (req->scan_plans[i].iterations &&
10599                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10600                                  req->scan_plans[i].iterations)))
10601                         return -ENOBUFS;
10602                 nla_nest_end(msg, scan_plan);
10603         }
10604         nla_nest_end(msg, scan_plans);
10605
10606         nla_nest_end(msg, nd);
10607
10608         return 0;
10609 }
10610
10611 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10612 {
10613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10614         struct sk_buff *msg;
10615         void *hdr;
10616         u32 size = NLMSG_DEFAULT_SIZE;
10617
10618         if (!rdev->wiphy.wowlan)
10619                 return -EOPNOTSUPP;
10620
10621         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10622                 /* adjust size to have room for all the data */
10623                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10624                         rdev->wiphy.wowlan_config->tcp->payload_len +
10625                         rdev->wiphy.wowlan_config->tcp->wake_len +
10626                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10627         }
10628
10629         msg = nlmsg_new(size, GFP_KERNEL);
10630         if (!msg)
10631                 return -ENOMEM;
10632
10633         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10634                              NL80211_CMD_GET_WOWLAN);
10635         if (!hdr)
10636                 goto nla_put_failure;
10637
10638         if (rdev->wiphy.wowlan_config) {
10639                 struct nlattr *nl_wowlan;
10640
10641                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10642                 if (!nl_wowlan)
10643                         goto nla_put_failure;
10644
10645                 if ((rdev->wiphy.wowlan_config->any &&
10646                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10647                     (rdev->wiphy.wowlan_config->disconnect &&
10648                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10649                     (rdev->wiphy.wowlan_config->magic_pkt &&
10650                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10651                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10652                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10653                     (rdev->wiphy.wowlan_config->eap_identity_req &&
10654                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10655                     (rdev->wiphy.wowlan_config->four_way_handshake &&
10656                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10657                     (rdev->wiphy.wowlan_config->rfkill_release &&
10658                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10659                         goto nla_put_failure;
10660
10661                 if (nl80211_send_wowlan_patterns(msg, rdev))
10662                         goto nla_put_failure;
10663
10664                 if (nl80211_send_wowlan_tcp(msg,
10665                                             rdev->wiphy.wowlan_config->tcp))
10666                         goto nla_put_failure;
10667
10668                 if (nl80211_send_wowlan_nd(
10669                             msg,
10670                             rdev->wiphy.wowlan_config->nd_config))
10671                         goto nla_put_failure;
10672
10673                 nla_nest_end(msg, nl_wowlan);
10674         }
10675
10676         genlmsg_end(msg, hdr);
10677         return genlmsg_reply(msg, info);
10678
10679 nla_put_failure:
10680         nlmsg_free(msg);
10681         return -ENOBUFS;
10682 }
10683
10684 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10685                                     struct nlattr *attr,
10686                                     struct cfg80211_wowlan *trig)
10687 {
10688         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10689         struct cfg80211_wowlan_tcp *cfg;
10690         struct nl80211_wowlan_tcp_data_token *tok = NULL;
10691         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10692         u32 size;
10693         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10694         int err, port;
10695
10696         if (!rdev->wiphy.wowlan->tcp)
10697                 return -EINVAL;
10698
10699         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10700                                nl80211_wowlan_tcp_policy, NULL);
10701         if (err)
10702                 return err;
10703
10704         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10705             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10706             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10707             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10708             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10709             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10710             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10711             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10712                 return -EINVAL;
10713
10714         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10715         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10716                 return -EINVAL;
10717
10718         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10719                         rdev->wiphy.wowlan->tcp->data_interval_max ||
10720             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10721                 return -EINVAL;
10722
10723         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10724         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10725                 return -EINVAL;
10726
10727         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10728         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10729                 return -EINVAL;
10730
10731         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10732                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10733
10734                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10735                 tokens_size = tokln - sizeof(*tok);
10736
10737                 if (!tok->len || tokens_size % tok->len)
10738                         return -EINVAL;
10739                 if (!rdev->wiphy.wowlan->tcp->tok)
10740                         return -EINVAL;
10741                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10742                         return -EINVAL;
10743                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10744                         return -EINVAL;
10745                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10746                         return -EINVAL;
10747                 if (tok->offset + tok->len > data_size)
10748                         return -EINVAL;
10749         }
10750
10751         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10752                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10753                 if (!rdev->wiphy.wowlan->tcp->seq)
10754                         return -EINVAL;
10755                 if (seq->len == 0 || seq->len > 4)
10756                         return -EINVAL;
10757                 if (seq->len + seq->offset > data_size)
10758                         return -EINVAL;
10759         }
10760
10761         size = sizeof(*cfg);
10762         size += data_size;
10763         size += wake_size + wake_mask_size;
10764         size += tokens_size;
10765
10766         cfg = kzalloc(size, GFP_KERNEL);
10767         if (!cfg)
10768                 return -ENOMEM;
10769         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10770         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10771         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10772                ETH_ALEN);
10773         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10774                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10775         else
10776                 port = 0;
10777 #ifdef CONFIG_INET
10778         /* allocate a socket and port for it and use it */
10779         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10780                             IPPROTO_TCP, &cfg->sock, 1);
10781         if (err) {
10782                 kfree(cfg);
10783                 return err;
10784         }
10785         if (inet_csk_get_port(cfg->sock->sk, port)) {
10786                 sock_release(cfg->sock);
10787                 kfree(cfg);
10788                 return -EADDRINUSE;
10789         }
10790         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10791 #else
10792         if (!port) {
10793                 kfree(cfg);
10794                 return -EINVAL;
10795         }
10796         cfg->src_port = port;
10797 #endif
10798
10799         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10800         cfg->payload_len = data_size;
10801         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10802         memcpy((void *)cfg->payload,
10803                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10804                data_size);
10805         if (seq)
10806                 cfg->payload_seq = *seq;
10807         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10808         cfg->wake_len = wake_size;
10809         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10810         memcpy((void *)cfg->wake_data,
10811                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10812                wake_size);
10813         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10814                          data_size + wake_size;
10815         memcpy((void *)cfg->wake_mask,
10816                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10817                wake_mask_size);
10818         if (tok) {
10819                 cfg->tokens_size = tokens_size;
10820                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10821         }
10822
10823         trig->tcp = cfg;
10824
10825         return 0;
10826 }
10827
10828 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10829                                    const struct wiphy_wowlan_support *wowlan,
10830                                    struct nlattr *attr,
10831                                    struct cfg80211_wowlan *trig)
10832 {
10833         struct nlattr **tb;
10834         int err;
10835
10836         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
10837         if (!tb)
10838                 return -ENOMEM;
10839
10840         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10841                 err = -EOPNOTSUPP;
10842                 goto out;
10843         }
10844
10845         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10846                                NULL);
10847         if (err)
10848                 goto out;
10849
10850         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10851                                                    wowlan->max_nd_match_sets);
10852         err = PTR_ERR_OR_ZERO(trig->nd_config);
10853         if (err)
10854                 trig->nd_config = NULL;
10855
10856 out:
10857         kfree(tb);
10858         return err;
10859 }
10860
10861 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10862 {
10863         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10864         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10865         struct cfg80211_wowlan new_triggers = {};
10866         struct cfg80211_wowlan *ntrig;
10867         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10868         int err, i;
10869         bool prev_enabled = rdev->wiphy.wowlan_config;
10870         bool regular = false;
10871
10872         if (!wowlan)
10873                 return -EOPNOTSUPP;
10874
10875         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10876                 cfg80211_rdev_free_wowlan(rdev);
10877                 rdev->wiphy.wowlan_config = NULL;
10878                 goto set_wakeup;
10879         }
10880
10881         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10882                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10883                                nl80211_wowlan_policy, info->extack);
10884         if (err)
10885                 return err;
10886
10887         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10888                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10889                         return -EINVAL;
10890                 new_triggers.any = true;
10891         }
10892
10893         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10894                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10895                         return -EINVAL;
10896                 new_triggers.disconnect = true;
10897                 regular = true;
10898         }
10899
10900         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10901                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10902                         return -EINVAL;
10903                 new_triggers.magic_pkt = true;
10904                 regular = true;
10905         }
10906
10907         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10908                 return -EINVAL;
10909
10910         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10911                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10912                         return -EINVAL;
10913                 new_triggers.gtk_rekey_failure = true;
10914                 regular = true;
10915         }
10916
10917         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10918                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10919                         return -EINVAL;
10920                 new_triggers.eap_identity_req = true;
10921                 regular = true;
10922         }
10923
10924         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10925                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10926                         return -EINVAL;
10927                 new_triggers.four_way_handshake = true;
10928                 regular = true;
10929         }
10930
10931         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10932                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10933                         return -EINVAL;
10934                 new_triggers.rfkill_release = true;
10935                 regular = true;
10936         }
10937
10938         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10939                 struct nlattr *pat;
10940                 int n_patterns = 0;
10941                 int rem, pat_len, mask_len, pkt_offset;
10942                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10943
10944                 regular = true;
10945
10946                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10947                                     rem)
10948                         n_patterns++;
10949                 if (n_patterns > wowlan->n_patterns)
10950                         return -EINVAL;
10951
10952                 new_triggers.patterns = kcalloc(n_patterns,
10953                                                 sizeof(new_triggers.patterns[0]),
10954                                                 GFP_KERNEL);
10955                 if (!new_triggers.patterns)
10956                         return -ENOMEM;
10957
10958                 new_triggers.n_patterns = n_patterns;
10959                 i = 0;
10960
10961                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10962                                     rem) {
10963                         u8 *mask_pat;
10964
10965                         nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10966                                          nl80211_packet_pattern_policy,
10967                                          info->extack);
10968                         err = -EINVAL;
10969                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
10970                             !pat_tb[NL80211_PKTPAT_PATTERN])
10971                                 goto error;
10972                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10973                         mask_len = DIV_ROUND_UP(pat_len, 8);
10974                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10975                                 goto error;
10976                         if (pat_len > wowlan->pattern_max_len ||
10977                             pat_len < wowlan->pattern_min_len)
10978                                 goto error;
10979
10980                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
10981                                 pkt_offset = 0;
10982                         else
10983                                 pkt_offset = nla_get_u32(
10984                                         pat_tb[NL80211_PKTPAT_OFFSET]);
10985                         if (pkt_offset > wowlan->max_pkt_offset)
10986                                 goto error;
10987                         new_triggers.patterns[i].pkt_offset = pkt_offset;
10988
10989                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10990                         if (!mask_pat) {
10991                                 err = -ENOMEM;
10992                                 goto error;
10993                         }
10994                         new_triggers.patterns[i].mask = mask_pat;
10995                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10996                                mask_len);
10997                         mask_pat += mask_len;
10998                         new_triggers.patterns[i].pattern = mask_pat;
10999                         new_triggers.patterns[i].pattern_len = pat_len;
11000                         memcpy(mask_pat,
11001                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11002                                pat_len);
11003                         i++;
11004                 }
11005         }
11006
11007         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11008                 regular = true;
11009                 err = nl80211_parse_wowlan_tcp(
11010                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11011                         &new_triggers);
11012                 if (err)
11013                         goto error;
11014         }
11015
11016         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11017                 regular = true;
11018                 err = nl80211_parse_wowlan_nd(
11019                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11020                         &new_triggers);
11021                 if (err)
11022                         goto error;
11023         }
11024
11025         /* The 'any' trigger means the device continues operating more or less
11026          * as in its normal operation mode and wakes up the host on most of the
11027          * normal interrupts (like packet RX, ...)
11028          * It therefore makes little sense to combine with the more constrained
11029          * wakeup trigger modes.
11030          */
11031         if (new_triggers.any && regular) {
11032                 err = -EINVAL;
11033                 goto error;
11034         }
11035
11036         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11037         if (!ntrig) {
11038                 err = -ENOMEM;
11039                 goto error;
11040         }
11041         cfg80211_rdev_free_wowlan(rdev);
11042         rdev->wiphy.wowlan_config = ntrig;
11043
11044  set_wakeup:
11045         if (rdev->ops->set_wakeup &&
11046             prev_enabled != !!rdev->wiphy.wowlan_config)
11047                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11048
11049         return 0;
11050  error:
11051         for (i = 0; i < new_triggers.n_patterns; i++)
11052                 kfree(new_triggers.patterns[i].mask);
11053         kfree(new_triggers.patterns);
11054         if (new_triggers.tcp && new_triggers.tcp->sock)
11055                 sock_release(new_triggers.tcp->sock);
11056         kfree(new_triggers.tcp);
11057         kfree(new_triggers.nd_config);
11058         return err;
11059 }
11060 #endif
11061
11062 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11063                                        struct cfg80211_registered_device *rdev)
11064 {
11065         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11066         int i, j, pat_len;
11067         struct cfg80211_coalesce_rules *rule;
11068
11069         if (!rdev->coalesce->n_rules)
11070                 return 0;
11071
11072         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11073         if (!nl_rules)
11074                 return -ENOBUFS;
11075
11076         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11077                 nl_rule = nla_nest_start(msg, i + 1);
11078                 if (!nl_rule)
11079                         return -ENOBUFS;
11080
11081                 rule = &rdev->coalesce->rules[i];
11082                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11083                                 rule->delay))
11084                         return -ENOBUFS;
11085
11086                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11087                                 rule->condition))
11088                         return -ENOBUFS;
11089
11090                 nl_pats = nla_nest_start(msg,
11091                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11092                 if (!nl_pats)
11093                         return -ENOBUFS;
11094
11095                 for (j = 0; j < rule->n_patterns; j++) {
11096                         nl_pat = nla_nest_start(msg, j + 1);
11097                         if (!nl_pat)
11098                                 return -ENOBUFS;
11099                         pat_len = rule->patterns[j].pattern_len;
11100                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11101                                     DIV_ROUND_UP(pat_len, 8),
11102                                     rule->patterns[j].mask) ||
11103                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11104                                     rule->patterns[j].pattern) ||
11105                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11106                                         rule->patterns[j].pkt_offset))
11107                                 return -ENOBUFS;
11108                         nla_nest_end(msg, nl_pat);
11109                 }
11110                 nla_nest_end(msg, nl_pats);
11111                 nla_nest_end(msg, nl_rule);
11112         }
11113         nla_nest_end(msg, nl_rules);
11114
11115         return 0;
11116 }
11117
11118 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11119 {
11120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11121         struct sk_buff *msg;
11122         void *hdr;
11123
11124         if (!rdev->wiphy.coalesce)
11125                 return -EOPNOTSUPP;
11126
11127         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11128         if (!msg)
11129                 return -ENOMEM;
11130
11131         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11132                              NL80211_CMD_GET_COALESCE);
11133         if (!hdr)
11134                 goto nla_put_failure;
11135
11136         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11137                 goto nla_put_failure;
11138
11139         genlmsg_end(msg, hdr);
11140         return genlmsg_reply(msg, info);
11141
11142 nla_put_failure:
11143         nlmsg_free(msg);
11144         return -ENOBUFS;
11145 }
11146
11147 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11148 {
11149         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11150         int i, j;
11151         struct cfg80211_coalesce_rules *rule;
11152
11153         if (!coalesce)
11154                 return;
11155
11156         for (i = 0; i < coalesce->n_rules; i++) {
11157                 rule = &coalesce->rules[i];
11158                 for (j = 0; j < rule->n_patterns; j++)
11159                         kfree(rule->patterns[j].mask);
11160                 kfree(rule->patterns);
11161         }
11162         kfree(coalesce->rules);
11163         kfree(coalesce);
11164         rdev->coalesce = NULL;
11165 }
11166
11167 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11168                                        struct nlattr *rule,
11169                                        struct cfg80211_coalesce_rules *new_rule)
11170 {
11171         int err, i;
11172         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11173         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11174         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11175         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11176
11177         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11178                                nl80211_coalesce_policy, NULL);
11179         if (err)
11180                 return err;
11181
11182         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11183                 new_rule->delay =
11184                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11185         if (new_rule->delay > coalesce->max_delay)
11186                 return -EINVAL;
11187
11188         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11189                 new_rule->condition =
11190                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11191         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
11192             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
11193                 return -EINVAL;
11194
11195         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11196                 return -EINVAL;
11197
11198         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11199                             rem)
11200                 n_patterns++;
11201         if (n_patterns > coalesce->n_patterns)
11202                 return -EINVAL;
11203
11204         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11205                                      GFP_KERNEL);
11206         if (!new_rule->patterns)
11207                 return -ENOMEM;
11208
11209         new_rule->n_patterns = n_patterns;
11210         i = 0;
11211
11212         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11213                             rem) {
11214                 u8 *mask_pat;
11215
11216                 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11217                                  nl80211_packet_pattern_policy, NULL);
11218                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11219                     !pat_tb[NL80211_PKTPAT_PATTERN])
11220                         return -EINVAL;
11221                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11222                 mask_len = DIV_ROUND_UP(pat_len, 8);
11223                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11224                         return -EINVAL;
11225                 if (pat_len > coalesce->pattern_max_len ||
11226                     pat_len < coalesce->pattern_min_len)
11227                         return -EINVAL;
11228
11229                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11230                         pkt_offset = 0;
11231                 else
11232                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11233                 if (pkt_offset > coalesce->max_pkt_offset)
11234                         return -EINVAL;
11235                 new_rule->patterns[i].pkt_offset = pkt_offset;
11236
11237                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11238                 if (!mask_pat)
11239                         return -ENOMEM;
11240
11241                 new_rule->patterns[i].mask = mask_pat;
11242                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11243                        mask_len);
11244
11245                 mask_pat += mask_len;
11246                 new_rule->patterns[i].pattern = mask_pat;
11247                 new_rule->patterns[i].pattern_len = pat_len;
11248                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11249                        pat_len);
11250                 i++;
11251         }
11252
11253         return 0;
11254 }
11255
11256 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11257 {
11258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11259         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11260         struct cfg80211_coalesce new_coalesce = {};
11261         struct cfg80211_coalesce *n_coalesce;
11262         int err, rem_rule, n_rules = 0, i, j;
11263         struct nlattr *rule;
11264         struct cfg80211_coalesce_rules *tmp_rule;
11265
11266         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11267                 return -EOPNOTSUPP;
11268
11269         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11270                 cfg80211_rdev_free_coalesce(rdev);
11271                 rdev_set_coalesce(rdev, NULL);
11272                 return 0;
11273         }
11274
11275         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11276                             rem_rule)
11277                 n_rules++;
11278         if (n_rules > coalesce->n_rules)
11279                 return -EINVAL;
11280
11281         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11282                                      GFP_KERNEL);
11283         if (!new_coalesce.rules)
11284                 return -ENOMEM;
11285
11286         new_coalesce.n_rules = n_rules;
11287         i = 0;
11288
11289         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11290                             rem_rule) {
11291                 err = nl80211_parse_coalesce_rule(rdev, rule,
11292                                                   &new_coalesce.rules[i]);
11293                 if (err)
11294                         goto error;
11295
11296                 i++;
11297         }
11298
11299         err = rdev_set_coalesce(rdev, &new_coalesce);
11300         if (err)
11301                 goto error;
11302
11303         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11304         if (!n_coalesce) {
11305                 err = -ENOMEM;
11306                 goto error;
11307         }
11308         cfg80211_rdev_free_coalesce(rdev);
11309         rdev->coalesce = n_coalesce;
11310
11311         return 0;
11312 error:
11313         for (i = 0; i < new_coalesce.n_rules; i++) {
11314                 tmp_rule = &new_coalesce.rules[i];
11315                 for (j = 0; j < tmp_rule->n_patterns; j++)
11316                         kfree(tmp_rule->patterns[j].mask);
11317                 kfree(tmp_rule->patterns);
11318         }
11319         kfree(new_coalesce.rules);
11320
11321         return err;
11322 }
11323
11324 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11325 {
11326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11327         struct net_device *dev = info->user_ptr[1];
11328         struct wireless_dev *wdev = dev->ieee80211_ptr;
11329         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11330         struct cfg80211_gtk_rekey_data rekey_data;
11331         int err;
11332
11333         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11334                 return -EINVAL;
11335
11336         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11337                                info->attrs[NL80211_ATTR_REKEY_DATA],
11338                                nl80211_rekey_policy, info->extack);
11339         if (err)
11340                 return err;
11341
11342         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11343             !tb[NL80211_REKEY_DATA_KCK])
11344                 return -EINVAL;
11345         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11346                 return -ERANGE;
11347         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11348                 return -ERANGE;
11349         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11350                 return -ERANGE;
11351
11352         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11353         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11354         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11355
11356         wdev_lock(wdev);
11357         if (!wdev->current_bss) {
11358                 err = -ENOTCONN;
11359                 goto out;
11360         }
11361
11362         if (!rdev->ops->set_rekey_data) {
11363                 err = -EOPNOTSUPP;
11364                 goto out;
11365         }
11366
11367         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11368  out:
11369         wdev_unlock(wdev);
11370         return err;
11371 }
11372
11373 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11374                                              struct genl_info *info)
11375 {
11376         struct net_device *dev = info->user_ptr[1];
11377         struct wireless_dev *wdev = dev->ieee80211_ptr;
11378
11379         if (wdev->iftype != NL80211_IFTYPE_AP &&
11380             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11381                 return -EINVAL;
11382
11383         if (wdev->ap_unexpected_nlportid)
11384                 return -EBUSY;
11385
11386         wdev->ap_unexpected_nlportid = info->snd_portid;
11387         return 0;
11388 }
11389
11390 static int nl80211_probe_client(struct sk_buff *skb,
11391                                 struct genl_info *info)
11392 {
11393         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11394         struct net_device *dev = info->user_ptr[1];
11395         struct wireless_dev *wdev = dev->ieee80211_ptr;
11396         struct sk_buff *msg;
11397         void *hdr;
11398         const u8 *addr;
11399         u64 cookie;
11400         int err;
11401
11402         if (wdev->iftype != NL80211_IFTYPE_AP &&
11403             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11404                 return -EOPNOTSUPP;
11405
11406         if (!info->attrs[NL80211_ATTR_MAC])
11407                 return -EINVAL;
11408
11409         if (!rdev->ops->probe_client)
11410                 return -EOPNOTSUPP;
11411
11412         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11413         if (!msg)
11414                 return -ENOMEM;
11415
11416         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11417                              NL80211_CMD_PROBE_CLIENT);
11418         if (!hdr) {
11419                 err = -ENOBUFS;
11420                 goto free_msg;
11421         }
11422
11423         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11424
11425         err = rdev_probe_client(rdev, dev, addr, &cookie);
11426         if (err)
11427                 goto free_msg;
11428
11429         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11430                               NL80211_ATTR_PAD))
11431                 goto nla_put_failure;
11432
11433         genlmsg_end(msg, hdr);
11434
11435         return genlmsg_reply(msg, info);
11436
11437  nla_put_failure:
11438         err = -ENOBUFS;
11439  free_msg:
11440         nlmsg_free(msg);
11441         return err;
11442 }
11443
11444 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11445 {
11446         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11447         struct cfg80211_beacon_registration *reg, *nreg;
11448         int rv;
11449
11450         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11451                 return -EOPNOTSUPP;
11452
11453         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11454         if (!nreg)
11455                 return -ENOMEM;
11456
11457         /* First, check if already registered. */
11458         spin_lock_bh(&rdev->beacon_registrations_lock);
11459         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11460                 if (reg->nlportid == info->snd_portid) {
11461                         rv = -EALREADY;
11462                         goto out_err;
11463                 }
11464         }
11465         /* Add it to the list */
11466         nreg->nlportid = info->snd_portid;
11467         list_add(&nreg->list, &rdev->beacon_registrations);
11468
11469         spin_unlock_bh(&rdev->beacon_registrations_lock);
11470
11471         return 0;
11472 out_err:
11473         spin_unlock_bh(&rdev->beacon_registrations_lock);
11474         kfree(nreg);
11475         return rv;
11476 }
11477
11478 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11479 {
11480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11481         struct wireless_dev *wdev = info->user_ptr[1];
11482         int err;
11483
11484         if (!rdev->ops->start_p2p_device)
11485                 return -EOPNOTSUPP;
11486
11487         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11488                 return -EOPNOTSUPP;
11489
11490         if (wdev_running(wdev))
11491                 return 0;
11492
11493         if (rfkill_blocked(rdev->rfkill))
11494                 return -ERFKILL;
11495
11496         err = rdev_start_p2p_device(rdev, wdev);
11497         if (err)
11498                 return err;
11499
11500         wdev->is_running = true;
11501         rdev->opencount++;
11502
11503         return 0;
11504 }
11505
11506 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11507 {
11508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11509         struct wireless_dev *wdev = info->user_ptr[1];
11510
11511         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11512                 return -EOPNOTSUPP;
11513
11514         if (!rdev->ops->stop_p2p_device)
11515                 return -EOPNOTSUPP;
11516
11517         cfg80211_stop_p2p_device(rdev, wdev);
11518
11519         return 0;
11520 }
11521
11522 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11523 {
11524         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11525         struct wireless_dev *wdev = info->user_ptr[1];
11526         struct cfg80211_nan_conf conf = {};
11527         int err;
11528
11529         if (wdev->iftype != NL80211_IFTYPE_NAN)
11530                 return -EOPNOTSUPP;
11531
11532         if (wdev_running(wdev))
11533                 return -EEXIST;
11534
11535         if (rfkill_blocked(rdev->rfkill))
11536                 return -ERFKILL;
11537
11538         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11539                 return -EINVAL;
11540
11541         conf.master_pref =
11542                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11543         if (!conf.master_pref)
11544                 return -EINVAL;
11545
11546         if (info->attrs[NL80211_ATTR_BANDS]) {
11547                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11548
11549                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11550                         return -EOPNOTSUPP;
11551
11552                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11553                         return -EINVAL;
11554
11555                 conf.bands = bands;
11556         }
11557
11558         err = rdev_start_nan(rdev, wdev, &conf);
11559         if (err)
11560                 return err;
11561
11562         wdev->is_running = true;
11563         rdev->opencount++;
11564
11565         return 0;
11566 }
11567
11568 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11569 {
11570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11571         struct wireless_dev *wdev = info->user_ptr[1];
11572
11573         if (wdev->iftype != NL80211_IFTYPE_NAN)
11574                 return -EOPNOTSUPP;
11575
11576         cfg80211_stop_nan(rdev, wdev);
11577
11578         return 0;
11579 }
11580
11581 static int validate_nan_filter(struct nlattr *filter_attr)
11582 {
11583         struct nlattr *attr;
11584         int len = 0, n_entries = 0, rem;
11585
11586         nla_for_each_nested(attr, filter_attr, rem) {
11587                 len += nla_len(attr);
11588                 n_entries++;
11589         }
11590
11591         if (len >= U8_MAX)
11592                 return -EINVAL;
11593
11594         return n_entries;
11595 }
11596
11597 static int handle_nan_filter(struct nlattr *attr_filter,
11598                              struct cfg80211_nan_func *func,
11599                              bool tx)
11600 {
11601         struct nlattr *attr;
11602         int n_entries, rem, i;
11603         struct cfg80211_nan_func_filter *filter;
11604
11605         n_entries = validate_nan_filter(attr_filter);
11606         if (n_entries < 0)
11607                 return n_entries;
11608
11609         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11610
11611         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11612         if (!filter)
11613                 return -ENOMEM;
11614
11615         i = 0;
11616         nla_for_each_nested(attr, attr_filter, rem) {
11617                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11618                 filter[i].len = nla_len(attr);
11619                 i++;
11620         }
11621         if (tx) {
11622                 func->num_tx_filters = n_entries;
11623                 func->tx_filters = filter;
11624         } else {
11625                 func->num_rx_filters = n_entries;
11626                 func->rx_filters = filter;
11627         }
11628
11629         return 0;
11630 }
11631
11632 static int nl80211_nan_add_func(struct sk_buff *skb,
11633                                 struct genl_info *info)
11634 {
11635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11636         struct wireless_dev *wdev = info->user_ptr[1];
11637         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11638         struct cfg80211_nan_func *func;
11639         struct sk_buff *msg = NULL;
11640         void *hdr = NULL;
11641         int err = 0;
11642
11643         if (wdev->iftype != NL80211_IFTYPE_NAN)
11644                 return -EOPNOTSUPP;
11645
11646         if (!wdev_running(wdev))
11647                 return -ENOTCONN;
11648
11649         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11650                 return -EINVAL;
11651
11652         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11653                                info->attrs[NL80211_ATTR_NAN_FUNC],
11654                                nl80211_nan_func_policy, info->extack);
11655         if (err)
11656                 return err;
11657
11658         func = kzalloc(sizeof(*func), GFP_KERNEL);
11659         if (!func)
11660                 return -ENOMEM;
11661
11662         func->cookie = wdev->wiphy->cookie_counter++;
11663
11664         if (!tb[NL80211_NAN_FUNC_TYPE] ||
11665             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11666                 err = -EINVAL;
11667                 goto out;
11668         }
11669
11670
11671         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11672
11673         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11674                 err = -EINVAL;
11675                 goto out;
11676         }
11677
11678         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11679                sizeof(func->service_id));
11680
11681         func->close_range =
11682                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11683
11684         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11685                 func->serv_spec_info_len =
11686                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11687                 func->serv_spec_info =
11688                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11689                                 func->serv_spec_info_len,
11690                                 GFP_KERNEL);
11691                 if (!func->serv_spec_info) {
11692                         err = -ENOMEM;
11693                         goto out;
11694                 }
11695         }
11696
11697         if (tb[NL80211_NAN_FUNC_TTL])
11698                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11699
11700         switch (func->type) {
11701         case NL80211_NAN_FUNC_PUBLISH:
11702                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11703                         err = -EINVAL;
11704                         goto out;
11705                 }
11706
11707                 func->publish_type =
11708                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11709                 func->publish_bcast =
11710                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11711
11712                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11713                         func->publish_bcast) {
11714                         err = -EINVAL;
11715                         goto out;
11716                 }
11717                 break;
11718         case NL80211_NAN_FUNC_SUBSCRIBE:
11719                 func->subscribe_active =
11720                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11721                 break;
11722         case NL80211_NAN_FUNC_FOLLOW_UP:
11723                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11724                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11725                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11726                         err = -EINVAL;
11727                         goto out;
11728                 }
11729
11730                 func->followup_id =
11731                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11732                 func->followup_reqid =
11733                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11734                 memcpy(func->followup_dest.addr,
11735                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11736                        sizeof(func->followup_dest.addr));
11737                 if (func->ttl) {
11738                         err = -EINVAL;
11739                         goto out;
11740                 }
11741                 break;
11742         default:
11743                 err = -EINVAL;
11744                 goto out;
11745         }
11746
11747         if (tb[NL80211_NAN_FUNC_SRF]) {
11748                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11749
11750                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11751                                        tb[NL80211_NAN_FUNC_SRF],
11752                                        nl80211_nan_srf_policy, info->extack);
11753                 if (err)
11754                         goto out;
11755
11756                 func->srf_include =
11757                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11758
11759                 if (srf_tb[NL80211_NAN_SRF_BF]) {
11760                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11761                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11762                                 err = -EINVAL;
11763                                 goto out;
11764                         }
11765
11766                         func->srf_bf_len =
11767                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11768                         func->srf_bf =
11769                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11770                                         func->srf_bf_len, GFP_KERNEL);
11771                         if (!func->srf_bf) {
11772                                 err = -ENOMEM;
11773                                 goto out;
11774                         }
11775
11776                         func->srf_bf_idx =
11777                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11778                 } else {
11779                         struct nlattr *attr, *mac_attr =
11780                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11781                         int n_entries, rem, i = 0;
11782
11783                         if (!mac_attr) {
11784                                 err = -EINVAL;
11785                                 goto out;
11786                         }
11787
11788                         n_entries = validate_acl_mac_addrs(mac_attr);
11789                         if (n_entries <= 0) {
11790                                 err = -EINVAL;
11791                                 goto out;
11792                         }
11793
11794                         func->srf_num_macs = n_entries;
11795                         func->srf_macs =
11796                                 kcalloc(n_entries, sizeof(*func->srf_macs),
11797                                         GFP_KERNEL);
11798                         if (!func->srf_macs) {
11799                                 err = -ENOMEM;
11800                                 goto out;
11801                         }
11802
11803                         nla_for_each_nested(attr, mac_attr, rem)
11804                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11805                                        sizeof(*func->srf_macs));
11806                 }
11807         }
11808
11809         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11810                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11811                                         func, true);
11812                 if (err)
11813                         goto out;
11814         }
11815
11816         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11817                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11818                                         func, false);
11819                 if (err)
11820                         goto out;
11821         }
11822
11823         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11824         if (!msg) {
11825                 err = -ENOMEM;
11826                 goto out;
11827         }
11828
11829         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11830                              NL80211_CMD_ADD_NAN_FUNCTION);
11831         /* This can't really happen - we just allocated 4KB */
11832         if (WARN_ON(!hdr)) {
11833                 err = -ENOMEM;
11834                 goto out;
11835         }
11836
11837         err = rdev_add_nan_func(rdev, wdev, func);
11838 out:
11839         if (err < 0) {
11840                 cfg80211_free_nan_func(func);
11841                 nlmsg_free(msg);
11842                 return err;
11843         }
11844
11845         /* propagate the instance id and cookie to userspace  */
11846         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11847                               NL80211_ATTR_PAD))
11848                 goto nla_put_failure;
11849
11850         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11851         if (!func_attr)
11852                 goto nla_put_failure;
11853
11854         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11855                        func->instance_id))
11856                 goto nla_put_failure;
11857
11858         nla_nest_end(msg, func_attr);
11859
11860         genlmsg_end(msg, hdr);
11861         return genlmsg_reply(msg, info);
11862
11863 nla_put_failure:
11864         nlmsg_free(msg);
11865         return -ENOBUFS;
11866 }
11867
11868 static int nl80211_nan_del_func(struct sk_buff *skb,
11869                                struct genl_info *info)
11870 {
11871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11872         struct wireless_dev *wdev = info->user_ptr[1];
11873         u64 cookie;
11874
11875         if (wdev->iftype != NL80211_IFTYPE_NAN)
11876                 return -EOPNOTSUPP;
11877
11878         if (!wdev_running(wdev))
11879                 return -ENOTCONN;
11880
11881         if (!info->attrs[NL80211_ATTR_COOKIE])
11882                 return -EINVAL;
11883
11884         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11885
11886         rdev_del_nan_func(rdev, wdev, cookie);
11887
11888         return 0;
11889 }
11890
11891 static int nl80211_nan_change_config(struct sk_buff *skb,
11892                                      struct genl_info *info)
11893 {
11894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11895         struct wireless_dev *wdev = info->user_ptr[1];
11896         struct cfg80211_nan_conf conf = {};
11897         u32 changed = 0;
11898
11899         if (wdev->iftype != NL80211_IFTYPE_NAN)
11900                 return -EOPNOTSUPP;
11901
11902         if (!wdev_running(wdev))
11903                 return -ENOTCONN;
11904
11905         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11906                 conf.master_pref =
11907                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11908                 if (conf.master_pref <= 1 || conf.master_pref == 255)
11909                         return -EINVAL;
11910
11911                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11912         }
11913
11914         if (info->attrs[NL80211_ATTR_BANDS]) {
11915                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11916
11917                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11918                         return -EOPNOTSUPP;
11919
11920                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11921                         return -EINVAL;
11922
11923                 conf.bands = bands;
11924                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11925         }
11926
11927         if (!changed)
11928                 return -EINVAL;
11929
11930         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11931 }
11932
11933 void cfg80211_nan_match(struct wireless_dev *wdev,
11934                         struct cfg80211_nan_match_params *match, gfp_t gfp)
11935 {
11936         struct wiphy *wiphy = wdev->wiphy;
11937         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11938         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11939         struct sk_buff *msg;
11940         void *hdr;
11941
11942         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11943                 return;
11944
11945         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11946         if (!msg)
11947                 return;
11948
11949         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11950         if (!hdr) {
11951                 nlmsg_free(msg);
11952                 return;
11953         }
11954
11955         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11956             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11957                                          wdev->netdev->ifindex)) ||
11958             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11959                               NL80211_ATTR_PAD))
11960                 goto nla_put_failure;
11961
11962         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11963                               NL80211_ATTR_PAD) ||
11964             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11965                 goto nla_put_failure;
11966
11967         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11968         if (!match_attr)
11969                 goto nla_put_failure;
11970
11971         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11972         if (!local_func_attr)
11973                 goto nla_put_failure;
11974
11975         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11976                 goto nla_put_failure;
11977
11978         nla_nest_end(msg, local_func_attr);
11979
11980         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11981         if (!peer_func_attr)
11982                 goto nla_put_failure;
11983
11984         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11985             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11986                 goto nla_put_failure;
11987
11988         if (match->info && match->info_len &&
11989             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11990                     match->info))
11991                 goto nla_put_failure;
11992
11993         nla_nest_end(msg, peer_func_attr);
11994         nla_nest_end(msg, match_attr);
11995         genlmsg_end(msg, hdr);
11996
11997         if (!wdev->owner_nlportid)
11998                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11999                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12000         else
12001                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12002                                 wdev->owner_nlportid);
12003
12004         return;
12005
12006 nla_put_failure:
12007         nlmsg_free(msg);
12008 }
12009 EXPORT_SYMBOL(cfg80211_nan_match);
12010
12011 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12012                                   u8 inst_id,
12013                                   enum nl80211_nan_func_term_reason reason,
12014                                   u64 cookie, gfp_t gfp)
12015 {
12016         struct wiphy *wiphy = wdev->wiphy;
12017         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12018         struct sk_buff *msg;
12019         struct nlattr *func_attr;
12020         void *hdr;
12021
12022         if (WARN_ON(!inst_id))
12023                 return;
12024
12025         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12026         if (!msg)
12027                 return;
12028
12029         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12030         if (!hdr) {
12031                 nlmsg_free(msg);
12032                 return;
12033         }
12034
12035         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12036             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12037                                          wdev->netdev->ifindex)) ||
12038             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12039                               NL80211_ATTR_PAD))
12040                 goto nla_put_failure;
12041
12042         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12043                               NL80211_ATTR_PAD))
12044                 goto nla_put_failure;
12045
12046         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12047         if (!func_attr)
12048                 goto nla_put_failure;
12049
12050         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12051             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12052                 goto nla_put_failure;
12053
12054         nla_nest_end(msg, func_attr);
12055         genlmsg_end(msg, hdr);
12056
12057         if (!wdev->owner_nlportid)
12058                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12059                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12060         else
12061                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12062                                 wdev->owner_nlportid);
12063
12064         return;
12065
12066 nla_put_failure:
12067         nlmsg_free(msg);
12068 }
12069 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12070
12071 static int nl80211_get_protocol_features(struct sk_buff *skb,
12072                                          struct genl_info *info)
12073 {
12074         void *hdr;
12075         struct sk_buff *msg;
12076
12077         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12078         if (!msg)
12079                 return -ENOMEM;
12080
12081         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12082                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12083         if (!hdr)
12084                 goto nla_put_failure;
12085
12086         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12087                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12088                 goto nla_put_failure;
12089
12090         genlmsg_end(msg, hdr);
12091         return genlmsg_reply(msg, info);
12092
12093  nla_put_failure:
12094         kfree_skb(msg);
12095         return -ENOBUFS;
12096 }
12097
12098 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12099 {
12100         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12101         struct cfg80211_update_ft_ies_params ft_params;
12102         struct net_device *dev = info->user_ptr[1];
12103
12104         if (!rdev->ops->update_ft_ies)
12105                 return -EOPNOTSUPP;
12106
12107         if (!info->attrs[NL80211_ATTR_MDID] ||
12108             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
12109                 return -EINVAL;
12110
12111         memset(&ft_params, 0, sizeof(ft_params));
12112         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12113         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12114         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12115
12116         return rdev_update_ft_ies(rdev, dev, &ft_params);
12117 }
12118
12119 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12120                                        struct genl_info *info)
12121 {
12122         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12123         struct wireless_dev *wdev = info->user_ptr[1];
12124         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12125         u16 duration;
12126         int ret;
12127
12128         if (!rdev->ops->crit_proto_start)
12129                 return -EOPNOTSUPP;
12130
12131         if (WARN_ON(!rdev->ops->crit_proto_stop))
12132                 return -EINVAL;
12133
12134         if (rdev->crit_proto_nlportid)
12135                 return -EBUSY;
12136
12137         /* determine protocol if provided */
12138         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12139                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12140
12141         if (proto >= NUM_NL80211_CRIT_PROTO)
12142                 return -EINVAL;
12143
12144         /* timeout must be provided */
12145         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12146                 return -EINVAL;
12147
12148         duration =
12149                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12150
12151         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12152                 return -ERANGE;
12153
12154         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12155         if (!ret)
12156                 rdev->crit_proto_nlportid = info->snd_portid;
12157
12158         return ret;
12159 }
12160
12161 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12162                                       struct genl_info *info)
12163 {
12164         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12165         struct wireless_dev *wdev = info->user_ptr[1];
12166
12167         if (!rdev->ops->crit_proto_stop)
12168                 return -EOPNOTSUPP;
12169
12170         if (rdev->crit_proto_nlportid) {
12171                 rdev->crit_proto_nlportid = 0;
12172                 rdev_crit_proto_stop(rdev, wdev);
12173         }
12174         return 0;
12175 }
12176
12177 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12178 {
12179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12180         struct wireless_dev *wdev =
12181                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12182         int i, err;
12183         u32 vid, subcmd;
12184
12185         if (!rdev->wiphy.vendor_commands)
12186                 return -EOPNOTSUPP;
12187
12188         if (IS_ERR(wdev)) {
12189                 err = PTR_ERR(wdev);
12190                 if (err != -EINVAL)
12191                         return err;
12192                 wdev = NULL;
12193         } else if (wdev->wiphy != &rdev->wiphy) {
12194                 return -EINVAL;
12195         }
12196
12197         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12198             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12199                 return -EINVAL;
12200
12201         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12202         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12203         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12204                 const struct wiphy_vendor_command *vcmd;
12205                 void *data = NULL;
12206                 int len = 0;
12207
12208                 vcmd = &rdev->wiphy.vendor_commands[i];
12209
12210                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12211                         continue;
12212
12213                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12214                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12215                         if (!wdev)
12216                                 return -EINVAL;
12217                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12218                             !wdev->netdev)
12219                                 return -EINVAL;
12220
12221                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12222                                 if (!wdev_running(wdev))
12223                                         return -ENETDOWN;
12224                         }
12225
12226                         if (!vcmd->doit)
12227                                 return -EOPNOTSUPP;
12228                 } else {
12229                         wdev = NULL;
12230                 }
12231
12232                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12233                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12234                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12235                 }
12236
12237                 rdev->cur_cmd_info = info;
12238                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12239                                                           data, len);
12240                 rdev->cur_cmd_info = NULL;
12241                 return err;
12242         }
12243
12244         return -EOPNOTSUPP;
12245 }
12246
12247 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12248                                        struct netlink_callback *cb,
12249                                        struct cfg80211_registered_device **rdev,
12250                                        struct wireless_dev **wdev)
12251 {
12252         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12253         u32 vid, subcmd;
12254         unsigned int i;
12255         int vcmd_idx = -1;
12256         int err;
12257         void *data = NULL;
12258         unsigned int data_len = 0;
12259
12260         if (cb->args[0]) {
12261                 /* subtract the 1 again here */
12262                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12263                 struct wireless_dev *tmp;
12264
12265                 if (!wiphy)
12266                         return -ENODEV;
12267                 *rdev = wiphy_to_rdev(wiphy);
12268                 *wdev = NULL;
12269
12270                 if (cb->args[1]) {
12271                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12272                                 if (tmp->identifier == cb->args[1] - 1) {
12273                                         *wdev = tmp;
12274                                         break;
12275                                 }
12276                         }
12277                 }
12278
12279                 /* keep rtnl locked in successful case */
12280                 return 0;
12281         }
12282
12283         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12284                           nl80211_fam.maxattr, nl80211_policy, NULL);
12285         if (err)
12286                 return err;
12287
12288         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12289             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12290                 return -EINVAL;
12291
12292         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12293         if (IS_ERR(*wdev))
12294                 *wdev = NULL;
12295
12296         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12297         if (IS_ERR(*rdev))
12298                 return PTR_ERR(*rdev);
12299
12300         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12301         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12302
12303         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12304                 const struct wiphy_vendor_command *vcmd;
12305
12306                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12307
12308                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12309                         continue;
12310
12311                 if (!vcmd->dumpit)
12312                         return -EOPNOTSUPP;
12313
12314                 vcmd_idx = i;
12315                 break;
12316         }
12317
12318         if (vcmd_idx < 0)
12319                 return -EOPNOTSUPP;
12320
12321         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12322                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12323                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12324         }
12325
12326         /* 0 is the first index - add 1 to parse only once */
12327         cb->args[0] = (*rdev)->wiphy_idx + 1;
12328         /* add 1 to know if it was NULL */
12329         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12330         cb->args[2] = vcmd_idx;
12331         cb->args[3] = (unsigned long)data;
12332         cb->args[4] = data_len;
12333
12334         /* keep rtnl locked in successful case */
12335         return 0;
12336 }
12337
12338 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12339                                    struct netlink_callback *cb)
12340 {
12341         struct cfg80211_registered_device *rdev;
12342         struct wireless_dev *wdev;
12343         unsigned int vcmd_idx;
12344         const struct wiphy_vendor_command *vcmd;
12345         void *data;
12346         int data_len;
12347         int err;
12348         struct nlattr *vendor_data;
12349
12350         rtnl_lock();
12351         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12352         if (err)
12353                 goto out;
12354
12355         vcmd_idx = cb->args[2];
12356         data = (void *)cb->args[3];
12357         data_len = cb->args[4];
12358         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12359
12360         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12361                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12362                 if (!wdev) {
12363                         err = -EINVAL;
12364                         goto out;
12365                 }
12366                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12367                     !wdev->netdev) {
12368                         err = -EINVAL;
12369                         goto out;
12370                 }
12371
12372                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12373                         if (!wdev_running(wdev)) {
12374                                 err = -ENETDOWN;
12375                                 goto out;
12376                         }
12377                 }
12378         }
12379
12380         while (1) {
12381                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12382                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
12383                                            NL80211_CMD_VENDOR);
12384                 if (!hdr)
12385                         break;
12386
12387                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12388                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12389                                                wdev_id(wdev),
12390                                                NL80211_ATTR_PAD))) {
12391                         genlmsg_cancel(skb, hdr);
12392                         break;
12393                 }
12394
12395                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12396                 if (!vendor_data) {
12397                         genlmsg_cancel(skb, hdr);
12398                         break;
12399                 }
12400
12401                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12402                                    (unsigned long *)&cb->args[5]);
12403                 nla_nest_end(skb, vendor_data);
12404
12405                 if (err == -ENOBUFS || err == -ENOENT) {
12406                         genlmsg_cancel(skb, hdr);
12407                         break;
12408                 } else if (err) {
12409                         genlmsg_cancel(skb, hdr);
12410                         goto out;
12411                 }
12412
12413                 genlmsg_end(skb, hdr);
12414         }
12415
12416         err = skb->len;
12417  out:
12418         rtnl_unlock();
12419         return err;
12420 }
12421
12422 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12423                                            enum nl80211_commands cmd,
12424                                            enum nl80211_attrs attr,
12425                                            int approxlen)
12426 {
12427         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12428
12429         if (WARN_ON(!rdev->cur_cmd_info))
12430                 return NULL;
12431
12432         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12433                                            rdev->cur_cmd_info->snd_portid,
12434                                            rdev->cur_cmd_info->snd_seq,
12435                                            cmd, attr, NULL, GFP_KERNEL);
12436 }
12437 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12438
12439 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12440 {
12441         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12442         void *hdr = ((void **)skb->cb)[1];
12443         struct nlattr *data = ((void **)skb->cb)[2];
12444
12445         /* clear CB data for netlink core to own from now on */
12446         memset(skb->cb, 0, sizeof(skb->cb));
12447
12448         if (WARN_ON(!rdev->cur_cmd_info)) {
12449                 kfree_skb(skb);
12450                 return -EINVAL;
12451         }
12452
12453         nla_nest_end(skb, data);
12454         genlmsg_end(skb, hdr);
12455         return genlmsg_reply(skb, rdev->cur_cmd_info);
12456 }
12457 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12458
12459 static int nl80211_set_qos_map(struct sk_buff *skb,
12460                                struct genl_info *info)
12461 {
12462         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12463         struct cfg80211_qos_map *qos_map = NULL;
12464         struct net_device *dev = info->user_ptr[1];
12465         u8 *pos, len, num_des, des_len, des;
12466         int ret;
12467
12468         if (!rdev->ops->set_qos_map)
12469                 return -EOPNOTSUPP;
12470
12471         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12472                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12473                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12474
12475                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12476                     len > IEEE80211_QOS_MAP_LEN_MAX)
12477                         return -EINVAL;
12478
12479                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12480                 if (!qos_map)
12481                         return -ENOMEM;
12482
12483                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12484                 if (num_des) {
12485                         des_len = num_des *
12486                                 sizeof(struct cfg80211_dscp_exception);
12487                         memcpy(qos_map->dscp_exception, pos, des_len);
12488                         qos_map->num_des = num_des;
12489                         for (des = 0; des < num_des; des++) {
12490                                 if (qos_map->dscp_exception[des].up > 7) {
12491                                         kfree(qos_map);
12492                                         return -EINVAL;
12493                                 }
12494                         }
12495                         pos += des_len;
12496                 }
12497                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12498         }
12499
12500         wdev_lock(dev->ieee80211_ptr);
12501         ret = nl80211_key_allowed(dev->ieee80211_ptr);
12502         if (!ret)
12503                 ret = rdev_set_qos_map(rdev, dev, qos_map);
12504         wdev_unlock(dev->ieee80211_ptr);
12505
12506         kfree(qos_map);
12507         return ret;
12508 }
12509
12510 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12511 {
12512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12513         struct net_device *dev = info->user_ptr[1];
12514         struct wireless_dev *wdev = dev->ieee80211_ptr;
12515         const u8 *peer;
12516         u8 tsid, up;
12517         u16 admitted_time = 0;
12518         int err;
12519
12520         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12521                 return -EOPNOTSUPP;
12522
12523         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12524             !info->attrs[NL80211_ATTR_USER_PRIO])
12525                 return -EINVAL;
12526
12527         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12528         if (tsid >= IEEE80211_NUM_TIDS)
12529                 return -EINVAL;
12530
12531         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12532         if (up >= IEEE80211_NUM_UPS)
12533                 return -EINVAL;
12534
12535         /* WMM uses TIDs 0-7 even for TSPEC */
12536         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12537                 /* TODO: handle 802.11 TSPEC/admission control
12538                  * need more attributes for that (e.g. BA session requirement);
12539                  * change the WMM adminssion test above to allow both then
12540                  */
12541                 return -EINVAL;
12542         }
12543
12544         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12545
12546         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12547                 admitted_time =
12548                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12549                 if (!admitted_time)
12550                         return -EINVAL;
12551         }
12552
12553         wdev_lock(wdev);
12554         switch (wdev->iftype) {
12555         case NL80211_IFTYPE_STATION:
12556         case NL80211_IFTYPE_P2P_CLIENT:
12557                 if (wdev->current_bss)
12558                         break;
12559                 err = -ENOTCONN;
12560                 goto out;
12561         default:
12562                 err = -EOPNOTSUPP;
12563                 goto out;
12564         }
12565
12566         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12567
12568  out:
12569         wdev_unlock(wdev);
12570         return err;
12571 }
12572
12573 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12574 {
12575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12576         struct net_device *dev = info->user_ptr[1];
12577         struct wireless_dev *wdev = dev->ieee80211_ptr;
12578         const u8 *peer;
12579         u8 tsid;
12580         int err;
12581
12582         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12583                 return -EINVAL;
12584
12585         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12586         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12587
12588         wdev_lock(wdev);
12589         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12590         wdev_unlock(wdev);
12591
12592         return err;
12593 }
12594
12595 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12596                                        struct genl_info *info)
12597 {
12598         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12599         struct net_device *dev = info->user_ptr[1];
12600         struct wireless_dev *wdev = dev->ieee80211_ptr;
12601         struct cfg80211_chan_def chandef = {};
12602         const u8 *addr;
12603         u8 oper_class;
12604         int err;
12605
12606         if (!rdev->ops->tdls_channel_switch ||
12607             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12608                 return -EOPNOTSUPP;
12609
12610         switch (dev->ieee80211_ptr->iftype) {
12611         case NL80211_IFTYPE_STATION:
12612         case NL80211_IFTYPE_P2P_CLIENT:
12613                 break;
12614         default:
12615                 return -EOPNOTSUPP;
12616         }
12617
12618         if (!info->attrs[NL80211_ATTR_MAC] ||
12619             !info->attrs[NL80211_ATTR_OPER_CLASS])
12620                 return -EINVAL;
12621
12622         err = nl80211_parse_chandef(rdev, info, &chandef);
12623         if (err)
12624                 return err;
12625
12626         /*
12627          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12628          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12629          * specification is not defined for them.
12630          */
12631         if (chandef.chan->band == NL80211_BAND_2GHZ &&
12632             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12633             chandef.width != NL80211_CHAN_WIDTH_20)
12634                 return -EINVAL;
12635
12636         /* we will be active on the TDLS link */
12637         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12638                                            wdev->iftype))
12639                 return -EINVAL;
12640
12641         /* don't allow switching to DFS channels */
12642         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12643                 return -EINVAL;
12644
12645         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12646         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12647
12648         wdev_lock(wdev);
12649         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12650         wdev_unlock(wdev);
12651
12652         return err;
12653 }
12654
12655 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12656                                               struct genl_info *info)
12657 {
12658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12659         struct net_device *dev = info->user_ptr[1];
12660         struct wireless_dev *wdev = dev->ieee80211_ptr;
12661         const u8 *addr;
12662
12663         if (!rdev->ops->tdls_channel_switch ||
12664             !rdev->ops->tdls_cancel_channel_switch ||
12665             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12666                 return -EOPNOTSUPP;
12667
12668         switch (dev->ieee80211_ptr->iftype) {
12669         case NL80211_IFTYPE_STATION:
12670         case NL80211_IFTYPE_P2P_CLIENT:
12671                 break;
12672         default:
12673                 return -EOPNOTSUPP;
12674         }
12675
12676         if (!info->attrs[NL80211_ATTR_MAC])
12677                 return -EINVAL;
12678
12679         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12680
12681         wdev_lock(wdev);
12682         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12683         wdev_unlock(wdev);
12684
12685         return 0;
12686 }
12687
12688 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12689                                             struct genl_info *info)
12690 {
12691         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12692         struct net_device *dev = info->user_ptr[1];
12693         struct wireless_dev *wdev = dev->ieee80211_ptr;
12694         const struct nlattr *nla;
12695         bool enabled;
12696
12697         if (!rdev->ops->set_multicast_to_unicast)
12698                 return -EOPNOTSUPP;
12699
12700         if (wdev->iftype != NL80211_IFTYPE_AP &&
12701             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12702                 return -EOPNOTSUPP;
12703
12704         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12705         enabled = nla_get_flag(nla);
12706
12707         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12708 }
12709
12710 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12711 {
12712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12713         struct net_device *dev = info->user_ptr[1];
12714         struct wireless_dev *wdev = dev->ieee80211_ptr;
12715         struct cfg80211_pmk_conf pmk_conf = {};
12716         int ret;
12717
12718         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12719             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12720                 return -EOPNOTSUPP;
12721
12722         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12723                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12724                 return -EOPNOTSUPP;
12725
12726         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12727                 return -EINVAL;
12728
12729         wdev_lock(wdev);
12730         if (!wdev->current_bss) {
12731                 ret = -ENOTCONN;
12732                 goto out;
12733         }
12734
12735         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12736         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12737                 ret = -EINVAL;
12738                 goto out;
12739         }
12740
12741         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12742         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12743         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12744             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12745                 ret = -EINVAL;
12746                 goto out;
12747         }
12748
12749         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12750                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12751
12752                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12753                         ret = -EINVAL;
12754                         goto out;
12755                 }
12756
12757                 pmk_conf.pmk_r0_name =
12758                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12759         }
12760
12761         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12762 out:
12763         wdev_unlock(wdev);
12764         return ret;
12765 }
12766
12767 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12768 {
12769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12770         struct net_device *dev = info->user_ptr[1];
12771         struct wireless_dev *wdev = dev->ieee80211_ptr;
12772         const u8 *aa;
12773         int ret;
12774
12775         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12776             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12777                 return -EOPNOTSUPP;
12778
12779         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12780                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12781                 return -EOPNOTSUPP;
12782
12783         if (!info->attrs[NL80211_ATTR_MAC])
12784                 return -EINVAL;
12785
12786         wdev_lock(wdev);
12787         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12788         ret = rdev_del_pmk(rdev, dev, aa);
12789         wdev_unlock(wdev);
12790
12791         return ret;
12792 }
12793
12794 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
12795 {
12796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12797         struct net_device *dev = info->user_ptr[1];
12798         struct cfg80211_external_auth_params params;
12799
12800         if (!rdev->ops->external_auth)
12801                 return -EOPNOTSUPP;
12802
12803         if (!info->attrs[NL80211_ATTR_SSID])
12804                 return -EINVAL;
12805
12806         if (!info->attrs[NL80211_ATTR_BSSID])
12807                 return -EINVAL;
12808
12809         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
12810                 return -EINVAL;
12811
12812         memset(&params, 0, sizeof(params));
12813
12814         params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12815         if (params.ssid.ssid_len == 0 ||
12816             params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
12817                 return -EINVAL;
12818         memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
12819                params.ssid.ssid_len);
12820
12821         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
12822                ETH_ALEN);
12823
12824         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12825
12826         return rdev_external_auth(rdev, dev, &params);
12827 }
12828
12829 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
12830 {
12831         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12832         struct net_device *dev = info->user_ptr[1];
12833         struct wireless_dev *wdev = dev->ieee80211_ptr;
12834         const u8 *buf;
12835         size_t len;
12836         u8 *dest;
12837         u16 proto;
12838         bool noencrypt;
12839         int err;
12840
12841         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12842                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
12843                 return -EOPNOTSUPP;
12844
12845         if (!rdev->ops->tx_control_port)
12846                 return -EOPNOTSUPP;
12847
12848         if (!info->attrs[NL80211_ATTR_FRAME] ||
12849             !info->attrs[NL80211_ATTR_MAC] ||
12850             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
12851                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
12852                 return -EINVAL;
12853         }
12854
12855         wdev_lock(wdev);
12856
12857         switch (wdev->iftype) {
12858         case NL80211_IFTYPE_AP:
12859         case NL80211_IFTYPE_P2P_GO:
12860         case NL80211_IFTYPE_MESH_POINT:
12861                 break;
12862         case NL80211_IFTYPE_ADHOC:
12863         case NL80211_IFTYPE_STATION:
12864         case NL80211_IFTYPE_P2P_CLIENT:
12865                 if (wdev->current_bss)
12866                         break;
12867                 err = -ENOTCONN;
12868                 goto out;
12869         default:
12870                 err = -EOPNOTSUPP;
12871                 goto out;
12872         }
12873
12874         wdev_unlock(wdev);
12875
12876         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12877         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12878         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
12879         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
12880         noencrypt =
12881                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
12882
12883         return rdev_tx_control_port(rdev, dev, buf, len,
12884                                     dest, cpu_to_be16(proto), noencrypt);
12885
12886  out:
12887         wdev_unlock(wdev);
12888         return err;
12889 }
12890
12891 #define NL80211_FLAG_NEED_WIPHY         0x01
12892 #define NL80211_FLAG_NEED_NETDEV        0x02
12893 #define NL80211_FLAG_NEED_RTNL          0x04
12894 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
12895 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
12896                                          NL80211_FLAG_CHECK_NETDEV_UP)
12897 #define NL80211_FLAG_NEED_WDEV          0x10
12898 /* If a netdev is associated, it must be UP, P2P must be started */
12899 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
12900                                          NL80211_FLAG_CHECK_NETDEV_UP)
12901 #define NL80211_FLAG_CLEAR_SKB          0x20
12902
12903 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12904                             struct genl_info *info)
12905 {
12906         struct cfg80211_registered_device *rdev;
12907         struct wireless_dev *wdev;
12908         struct net_device *dev;
12909         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12910
12911         if (rtnl)
12912                 rtnl_lock();
12913
12914         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12915                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12916                 if (IS_ERR(rdev)) {
12917                         if (rtnl)
12918                                 rtnl_unlock();
12919                         return PTR_ERR(rdev);
12920                 }
12921                 info->user_ptr[0] = rdev;
12922         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12923                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12924                 ASSERT_RTNL();
12925
12926                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12927                                                   info->attrs);
12928                 if (IS_ERR(wdev)) {
12929                         if (rtnl)
12930                                 rtnl_unlock();
12931                         return PTR_ERR(wdev);
12932                 }
12933
12934                 dev = wdev->netdev;
12935                 rdev = wiphy_to_rdev(wdev->wiphy);
12936
12937                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12938                         if (!dev) {
12939                                 if (rtnl)
12940                                         rtnl_unlock();
12941                                 return -EINVAL;
12942                         }
12943
12944                         info->user_ptr[1] = dev;
12945                 } else {
12946                         info->user_ptr[1] = wdev;
12947                 }
12948
12949                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12950                     !wdev_running(wdev)) {
12951                         if (rtnl)
12952                                 rtnl_unlock();
12953                         return -ENETDOWN;
12954                 }
12955
12956                 if (dev)
12957                         dev_hold(dev);
12958
12959                 info->user_ptr[0] = rdev;
12960         }
12961
12962         return 0;
12963 }
12964
12965 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12966                               struct genl_info *info)
12967 {
12968         if (info->user_ptr[1]) {
12969                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12970                         struct wireless_dev *wdev = info->user_ptr[1];
12971
12972                         if (wdev->netdev)
12973                                 dev_put(wdev->netdev);
12974                 } else {
12975                         dev_put(info->user_ptr[1]);
12976                 }
12977         }
12978
12979         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12980                 rtnl_unlock();
12981
12982         /* If needed, clear the netlink message payload from the SKB
12983          * as it might contain key data that shouldn't stick around on
12984          * the heap after the SKB is freed. The netlink message header
12985          * is still needed for further processing, so leave it intact.
12986          */
12987         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12988                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12989
12990                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12991         }
12992 }
12993
12994 static const struct genl_ops nl80211_ops[] = {
12995         {
12996                 .cmd = NL80211_CMD_GET_WIPHY,
12997                 .doit = nl80211_get_wiphy,
12998                 .dumpit = nl80211_dump_wiphy,
12999                 .done = nl80211_dump_wiphy_done,
13000                 .policy = nl80211_policy,
13001                 /* can be retrieved by unprivileged users */
13002                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13003                                   NL80211_FLAG_NEED_RTNL,
13004         },
13005         {
13006                 .cmd = NL80211_CMD_SET_WIPHY,
13007                 .doit = nl80211_set_wiphy,
13008                 .policy = nl80211_policy,
13009                 .flags = GENL_UNS_ADMIN_PERM,
13010                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13011         },
13012         {
13013                 .cmd = NL80211_CMD_GET_INTERFACE,
13014                 .doit = nl80211_get_interface,
13015                 .dumpit = nl80211_dump_interface,
13016                 .policy = nl80211_policy,
13017                 /* can be retrieved by unprivileged users */
13018                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13019                                   NL80211_FLAG_NEED_RTNL,
13020         },
13021         {
13022                 .cmd = NL80211_CMD_SET_INTERFACE,
13023                 .doit = nl80211_set_interface,
13024                 .policy = nl80211_policy,
13025                 .flags = GENL_UNS_ADMIN_PERM,
13026                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13027                                   NL80211_FLAG_NEED_RTNL,
13028         },
13029         {
13030                 .cmd = NL80211_CMD_NEW_INTERFACE,
13031                 .doit = nl80211_new_interface,
13032                 .policy = nl80211_policy,
13033                 .flags = GENL_UNS_ADMIN_PERM,
13034                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13035                                   NL80211_FLAG_NEED_RTNL,
13036         },
13037         {
13038                 .cmd = NL80211_CMD_DEL_INTERFACE,
13039                 .doit = nl80211_del_interface,
13040                 .policy = nl80211_policy,
13041                 .flags = GENL_UNS_ADMIN_PERM,
13042                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13043                                   NL80211_FLAG_NEED_RTNL,
13044         },
13045         {
13046                 .cmd = NL80211_CMD_GET_KEY,
13047                 .doit = nl80211_get_key,
13048                 .policy = nl80211_policy,
13049                 .flags = GENL_UNS_ADMIN_PERM,
13050                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13051                                   NL80211_FLAG_NEED_RTNL,
13052         },
13053         {
13054                 .cmd = NL80211_CMD_SET_KEY,
13055                 .doit = nl80211_set_key,
13056                 .policy = nl80211_policy,
13057                 .flags = GENL_UNS_ADMIN_PERM,
13058                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13059                                   NL80211_FLAG_NEED_RTNL |
13060                                   NL80211_FLAG_CLEAR_SKB,
13061         },
13062         {
13063                 .cmd = NL80211_CMD_NEW_KEY,
13064                 .doit = nl80211_new_key,
13065                 .policy = nl80211_policy,
13066                 .flags = GENL_UNS_ADMIN_PERM,
13067                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13068                                   NL80211_FLAG_NEED_RTNL |
13069                                   NL80211_FLAG_CLEAR_SKB,
13070         },
13071         {
13072                 .cmd = NL80211_CMD_DEL_KEY,
13073                 .doit = nl80211_del_key,
13074                 .policy = nl80211_policy,
13075                 .flags = GENL_UNS_ADMIN_PERM,
13076                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13077                                   NL80211_FLAG_NEED_RTNL,
13078         },
13079         {
13080                 .cmd = NL80211_CMD_SET_BEACON,
13081                 .policy = nl80211_policy,
13082                 .flags = GENL_UNS_ADMIN_PERM,
13083                 .doit = nl80211_set_beacon,
13084                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13085                                   NL80211_FLAG_NEED_RTNL,
13086         },
13087         {
13088                 .cmd = NL80211_CMD_START_AP,
13089                 .policy = nl80211_policy,
13090                 .flags = GENL_UNS_ADMIN_PERM,
13091                 .doit = nl80211_start_ap,
13092                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13093                                   NL80211_FLAG_NEED_RTNL,
13094         },
13095         {
13096                 .cmd = NL80211_CMD_STOP_AP,
13097                 .policy = nl80211_policy,
13098                 .flags = GENL_UNS_ADMIN_PERM,
13099                 .doit = nl80211_stop_ap,
13100                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13101                                   NL80211_FLAG_NEED_RTNL,
13102         },
13103         {
13104                 .cmd = NL80211_CMD_GET_STATION,
13105                 .doit = nl80211_get_station,
13106                 .dumpit = nl80211_dump_station,
13107                 .policy = nl80211_policy,
13108                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13109                                   NL80211_FLAG_NEED_RTNL,
13110         },
13111         {
13112                 .cmd = NL80211_CMD_SET_STATION,
13113                 .doit = nl80211_set_station,
13114                 .policy = nl80211_policy,
13115                 .flags = GENL_UNS_ADMIN_PERM,
13116                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13117                                   NL80211_FLAG_NEED_RTNL,
13118         },
13119         {
13120                 .cmd = NL80211_CMD_NEW_STATION,
13121                 .doit = nl80211_new_station,
13122                 .policy = nl80211_policy,
13123                 .flags = GENL_UNS_ADMIN_PERM,
13124                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13125                                   NL80211_FLAG_NEED_RTNL,
13126         },
13127         {
13128                 .cmd = NL80211_CMD_DEL_STATION,
13129                 .doit = nl80211_del_station,
13130                 .policy = nl80211_policy,
13131                 .flags = GENL_UNS_ADMIN_PERM,
13132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13133                                   NL80211_FLAG_NEED_RTNL,
13134         },
13135         {
13136                 .cmd = NL80211_CMD_GET_MPATH,
13137                 .doit = nl80211_get_mpath,
13138                 .dumpit = nl80211_dump_mpath,
13139                 .policy = nl80211_policy,
13140                 .flags = GENL_UNS_ADMIN_PERM,
13141                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13142                                   NL80211_FLAG_NEED_RTNL,
13143         },
13144         {
13145                 .cmd = NL80211_CMD_GET_MPP,
13146                 .doit = nl80211_get_mpp,
13147                 .dumpit = nl80211_dump_mpp,
13148                 .policy = nl80211_policy,
13149                 .flags = GENL_UNS_ADMIN_PERM,
13150                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13151                                   NL80211_FLAG_NEED_RTNL,
13152         },
13153         {
13154                 .cmd = NL80211_CMD_SET_MPATH,
13155                 .doit = nl80211_set_mpath,
13156                 .policy = nl80211_policy,
13157                 .flags = GENL_UNS_ADMIN_PERM,
13158                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13159                                   NL80211_FLAG_NEED_RTNL,
13160         },
13161         {
13162                 .cmd = NL80211_CMD_NEW_MPATH,
13163                 .doit = nl80211_new_mpath,
13164                 .policy = nl80211_policy,
13165                 .flags = GENL_UNS_ADMIN_PERM,
13166                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13167                                   NL80211_FLAG_NEED_RTNL,
13168         },
13169         {
13170                 .cmd = NL80211_CMD_DEL_MPATH,
13171                 .doit = nl80211_del_mpath,
13172                 .policy = nl80211_policy,
13173                 .flags = GENL_UNS_ADMIN_PERM,
13174                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13175                                   NL80211_FLAG_NEED_RTNL,
13176         },
13177         {
13178                 .cmd = NL80211_CMD_SET_BSS,
13179                 .doit = nl80211_set_bss,
13180                 .policy = nl80211_policy,
13181                 .flags = GENL_UNS_ADMIN_PERM,
13182                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13183                                   NL80211_FLAG_NEED_RTNL,
13184         },
13185         {
13186                 .cmd = NL80211_CMD_GET_REG,
13187                 .doit = nl80211_get_reg_do,
13188                 .dumpit = nl80211_get_reg_dump,
13189                 .policy = nl80211_policy,
13190                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13191                 /* can be retrieved by unprivileged users */
13192         },
13193 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13194         {
13195                 .cmd = NL80211_CMD_SET_REG,
13196                 .doit = nl80211_set_reg,
13197                 .policy = nl80211_policy,
13198                 .flags = GENL_ADMIN_PERM,
13199                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13200         },
13201 #endif
13202         {
13203                 .cmd = NL80211_CMD_REQ_SET_REG,
13204                 .doit = nl80211_req_set_reg,
13205                 .policy = nl80211_policy,
13206                 .flags = GENL_ADMIN_PERM,
13207         },
13208         {
13209                 .cmd = NL80211_CMD_RELOAD_REGDB,
13210                 .doit = nl80211_reload_regdb,
13211                 .policy = nl80211_policy,
13212                 .flags = GENL_ADMIN_PERM,
13213         },
13214         {
13215                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13216                 .doit = nl80211_get_mesh_config,
13217                 .policy = nl80211_policy,
13218                 /* can be retrieved by unprivileged users */
13219                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13220                                   NL80211_FLAG_NEED_RTNL,
13221         },
13222         {
13223                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13224                 .doit = nl80211_update_mesh_config,
13225                 .policy = nl80211_policy,
13226                 .flags = GENL_UNS_ADMIN_PERM,
13227                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13228                                   NL80211_FLAG_NEED_RTNL,
13229         },
13230         {
13231                 .cmd = NL80211_CMD_TRIGGER_SCAN,
13232                 .doit = nl80211_trigger_scan,
13233                 .policy = nl80211_policy,
13234                 .flags = GENL_UNS_ADMIN_PERM,
13235                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13236                                   NL80211_FLAG_NEED_RTNL,
13237         },
13238         {
13239                 .cmd = NL80211_CMD_ABORT_SCAN,
13240                 .doit = nl80211_abort_scan,
13241                 .policy = nl80211_policy,
13242                 .flags = GENL_UNS_ADMIN_PERM,
13243                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13244                                   NL80211_FLAG_NEED_RTNL,
13245         },
13246         {
13247                 .cmd = NL80211_CMD_GET_SCAN,
13248                 .policy = nl80211_policy,
13249                 .dumpit = nl80211_dump_scan,
13250         },
13251         {
13252                 .cmd = NL80211_CMD_START_SCHED_SCAN,
13253                 .doit = nl80211_start_sched_scan,
13254                 .policy = nl80211_policy,
13255                 .flags = GENL_UNS_ADMIN_PERM,
13256                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13257                                   NL80211_FLAG_NEED_RTNL,
13258         },
13259         {
13260                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13261                 .doit = nl80211_stop_sched_scan,
13262                 .policy = nl80211_policy,
13263                 .flags = GENL_UNS_ADMIN_PERM,
13264                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13265                                   NL80211_FLAG_NEED_RTNL,
13266         },
13267         {
13268                 .cmd = NL80211_CMD_AUTHENTICATE,
13269                 .doit = nl80211_authenticate,
13270                 .policy = nl80211_policy,
13271                 .flags = GENL_UNS_ADMIN_PERM,
13272                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13273                                   NL80211_FLAG_NEED_RTNL |
13274                                   NL80211_FLAG_CLEAR_SKB,
13275         },
13276         {
13277                 .cmd = NL80211_CMD_ASSOCIATE,
13278                 .doit = nl80211_associate,
13279                 .policy = nl80211_policy,
13280                 .flags = GENL_UNS_ADMIN_PERM,
13281                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13282                                   NL80211_FLAG_NEED_RTNL,
13283         },
13284         {
13285                 .cmd = NL80211_CMD_DEAUTHENTICATE,
13286                 .doit = nl80211_deauthenticate,
13287                 .policy = nl80211_policy,
13288                 .flags = GENL_UNS_ADMIN_PERM,
13289                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13290                                   NL80211_FLAG_NEED_RTNL,
13291         },
13292         {
13293                 .cmd = NL80211_CMD_DISASSOCIATE,
13294                 .doit = nl80211_disassociate,
13295                 .policy = nl80211_policy,
13296                 .flags = GENL_UNS_ADMIN_PERM,
13297                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13298                                   NL80211_FLAG_NEED_RTNL,
13299         },
13300         {
13301                 .cmd = NL80211_CMD_JOIN_IBSS,
13302                 .doit = nl80211_join_ibss,
13303                 .policy = nl80211_policy,
13304                 .flags = GENL_UNS_ADMIN_PERM,
13305                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13306                                   NL80211_FLAG_NEED_RTNL,
13307         },
13308         {
13309                 .cmd = NL80211_CMD_LEAVE_IBSS,
13310                 .doit = nl80211_leave_ibss,
13311                 .policy = nl80211_policy,
13312                 .flags = GENL_UNS_ADMIN_PERM,
13313                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13314                                   NL80211_FLAG_NEED_RTNL,
13315         },
13316 #ifdef CONFIG_NL80211_TESTMODE
13317         {
13318                 .cmd = NL80211_CMD_TESTMODE,
13319                 .doit = nl80211_testmode_do,
13320                 .dumpit = nl80211_testmode_dump,
13321                 .policy = nl80211_policy,
13322                 .flags = GENL_UNS_ADMIN_PERM,
13323                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13324                                   NL80211_FLAG_NEED_RTNL,
13325         },
13326 #endif
13327         {
13328                 .cmd = NL80211_CMD_CONNECT,
13329                 .doit = nl80211_connect,
13330                 .policy = nl80211_policy,
13331                 .flags = GENL_UNS_ADMIN_PERM,
13332                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13333                                   NL80211_FLAG_NEED_RTNL,
13334         },
13335         {
13336                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13337                 .doit = nl80211_update_connect_params,
13338                 .policy = nl80211_policy,
13339                 .flags = GENL_ADMIN_PERM,
13340                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13341                                   NL80211_FLAG_NEED_RTNL,
13342         },
13343         {
13344                 .cmd = NL80211_CMD_DISCONNECT,
13345                 .doit = nl80211_disconnect,
13346                 .policy = nl80211_policy,
13347                 .flags = GENL_UNS_ADMIN_PERM,
13348                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13349                                   NL80211_FLAG_NEED_RTNL,
13350         },
13351         {
13352                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13353                 .doit = nl80211_wiphy_netns,
13354                 .policy = nl80211_policy,
13355                 .flags = GENL_UNS_ADMIN_PERM,
13356                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13357                                   NL80211_FLAG_NEED_RTNL,
13358         },
13359         {
13360                 .cmd = NL80211_CMD_GET_SURVEY,
13361                 .policy = nl80211_policy,
13362                 .dumpit = nl80211_dump_survey,
13363         },
13364         {
13365                 .cmd = NL80211_CMD_SET_PMKSA,
13366                 .doit = nl80211_setdel_pmksa,
13367                 .policy = nl80211_policy,
13368                 .flags = GENL_UNS_ADMIN_PERM,
13369                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13370                                   NL80211_FLAG_NEED_RTNL,
13371         },
13372         {
13373                 .cmd = NL80211_CMD_DEL_PMKSA,
13374                 .doit = nl80211_setdel_pmksa,
13375                 .policy = nl80211_policy,
13376                 .flags = GENL_UNS_ADMIN_PERM,
13377                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13378                                   NL80211_FLAG_NEED_RTNL,
13379         },
13380         {
13381                 .cmd = NL80211_CMD_FLUSH_PMKSA,
13382                 .doit = nl80211_flush_pmksa,
13383                 .policy = nl80211_policy,
13384                 .flags = GENL_UNS_ADMIN_PERM,
13385                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13386                                   NL80211_FLAG_NEED_RTNL,
13387         },
13388         {
13389                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13390                 .doit = nl80211_remain_on_channel,
13391                 .policy = nl80211_policy,
13392                 .flags = GENL_UNS_ADMIN_PERM,
13393                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13394                                   NL80211_FLAG_NEED_RTNL,
13395         },
13396         {
13397                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13398                 .doit = nl80211_cancel_remain_on_channel,
13399                 .policy = nl80211_policy,
13400                 .flags = GENL_UNS_ADMIN_PERM,
13401                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13402                                   NL80211_FLAG_NEED_RTNL,
13403         },
13404         {
13405                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13406                 .doit = nl80211_set_tx_bitrate_mask,
13407                 .policy = nl80211_policy,
13408                 .flags = GENL_UNS_ADMIN_PERM,
13409                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13410                                   NL80211_FLAG_NEED_RTNL,
13411         },
13412         {
13413                 .cmd = NL80211_CMD_REGISTER_FRAME,
13414                 .doit = nl80211_register_mgmt,
13415                 .policy = nl80211_policy,
13416                 .flags = GENL_UNS_ADMIN_PERM,
13417                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13418                                   NL80211_FLAG_NEED_RTNL,
13419         },
13420         {
13421                 .cmd = NL80211_CMD_FRAME,
13422                 .doit = nl80211_tx_mgmt,
13423                 .policy = nl80211_policy,
13424                 .flags = GENL_UNS_ADMIN_PERM,
13425                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13426                                   NL80211_FLAG_NEED_RTNL,
13427         },
13428         {
13429                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13430                 .doit = nl80211_tx_mgmt_cancel_wait,
13431                 .policy = nl80211_policy,
13432                 .flags = GENL_UNS_ADMIN_PERM,
13433                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13434                                   NL80211_FLAG_NEED_RTNL,
13435         },
13436         {
13437                 .cmd = NL80211_CMD_SET_POWER_SAVE,
13438                 .doit = nl80211_set_power_save,
13439                 .policy = nl80211_policy,
13440                 .flags = GENL_UNS_ADMIN_PERM,
13441                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13442                                   NL80211_FLAG_NEED_RTNL,
13443         },
13444         {
13445                 .cmd = NL80211_CMD_GET_POWER_SAVE,
13446                 .doit = nl80211_get_power_save,
13447                 .policy = nl80211_policy,
13448                 /* can be retrieved by unprivileged users */
13449                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13450                                   NL80211_FLAG_NEED_RTNL,
13451         },
13452         {
13453                 .cmd = NL80211_CMD_SET_CQM,
13454                 .doit = nl80211_set_cqm,
13455                 .policy = nl80211_policy,
13456                 .flags = GENL_UNS_ADMIN_PERM,
13457                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13458                                   NL80211_FLAG_NEED_RTNL,
13459         },
13460         {
13461                 .cmd = NL80211_CMD_SET_CHANNEL,
13462                 .doit = nl80211_set_channel,
13463                 .policy = nl80211_policy,
13464                 .flags = GENL_UNS_ADMIN_PERM,
13465                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13466                                   NL80211_FLAG_NEED_RTNL,
13467         },
13468         {
13469                 .cmd = NL80211_CMD_SET_WDS_PEER,
13470                 .doit = nl80211_set_wds_peer,
13471                 .policy = nl80211_policy,
13472                 .flags = GENL_UNS_ADMIN_PERM,
13473                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13474                                   NL80211_FLAG_NEED_RTNL,
13475         },
13476         {
13477                 .cmd = NL80211_CMD_JOIN_MESH,
13478                 .doit = nl80211_join_mesh,
13479                 .policy = nl80211_policy,
13480                 .flags = GENL_UNS_ADMIN_PERM,
13481                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13482                                   NL80211_FLAG_NEED_RTNL,
13483         },
13484         {
13485                 .cmd = NL80211_CMD_LEAVE_MESH,
13486                 .doit = nl80211_leave_mesh,
13487                 .policy = nl80211_policy,
13488                 .flags = GENL_UNS_ADMIN_PERM,
13489                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13490                                   NL80211_FLAG_NEED_RTNL,
13491         },
13492         {
13493                 .cmd = NL80211_CMD_JOIN_OCB,
13494                 .doit = nl80211_join_ocb,
13495                 .policy = nl80211_policy,
13496                 .flags = GENL_UNS_ADMIN_PERM,
13497                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13498                                   NL80211_FLAG_NEED_RTNL,
13499         },
13500         {
13501                 .cmd = NL80211_CMD_LEAVE_OCB,
13502                 .doit = nl80211_leave_ocb,
13503                 .policy = nl80211_policy,
13504                 .flags = GENL_UNS_ADMIN_PERM,
13505                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13506                                   NL80211_FLAG_NEED_RTNL,
13507         },
13508 #ifdef CONFIG_PM
13509         {
13510                 .cmd = NL80211_CMD_GET_WOWLAN,
13511                 .doit = nl80211_get_wowlan,
13512                 .policy = nl80211_policy,
13513                 /* can be retrieved by unprivileged users */
13514                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13515                                   NL80211_FLAG_NEED_RTNL,
13516         },
13517         {
13518                 .cmd = NL80211_CMD_SET_WOWLAN,
13519                 .doit = nl80211_set_wowlan,
13520                 .policy = nl80211_policy,
13521                 .flags = GENL_UNS_ADMIN_PERM,
13522                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13523                                   NL80211_FLAG_NEED_RTNL,
13524         },
13525 #endif
13526         {
13527                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13528                 .doit = nl80211_set_rekey_data,
13529                 .policy = nl80211_policy,
13530                 .flags = GENL_UNS_ADMIN_PERM,
13531                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13532                                   NL80211_FLAG_NEED_RTNL |
13533                                   NL80211_FLAG_CLEAR_SKB,
13534         },
13535         {
13536                 .cmd = NL80211_CMD_TDLS_MGMT,
13537                 .doit = nl80211_tdls_mgmt,
13538                 .policy = nl80211_policy,
13539                 .flags = GENL_UNS_ADMIN_PERM,
13540                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13541                                   NL80211_FLAG_NEED_RTNL,
13542         },
13543         {
13544                 .cmd = NL80211_CMD_TDLS_OPER,
13545                 .doit = nl80211_tdls_oper,
13546                 .policy = nl80211_policy,
13547                 .flags = GENL_UNS_ADMIN_PERM,
13548                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13549                                   NL80211_FLAG_NEED_RTNL,
13550         },
13551         {
13552                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13553                 .doit = nl80211_register_unexpected_frame,
13554                 .policy = nl80211_policy,
13555                 .flags = GENL_UNS_ADMIN_PERM,
13556                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13557                                   NL80211_FLAG_NEED_RTNL,
13558         },
13559         {
13560                 .cmd = NL80211_CMD_PROBE_CLIENT,
13561                 .doit = nl80211_probe_client,
13562                 .policy = nl80211_policy,
13563                 .flags = GENL_UNS_ADMIN_PERM,
13564                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13565                                   NL80211_FLAG_NEED_RTNL,
13566         },
13567         {
13568                 .cmd = NL80211_CMD_REGISTER_BEACONS,
13569                 .doit = nl80211_register_beacons,
13570                 .policy = nl80211_policy,
13571                 .flags = GENL_UNS_ADMIN_PERM,
13572                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13573                                   NL80211_FLAG_NEED_RTNL,
13574         },
13575         {
13576                 .cmd = NL80211_CMD_SET_NOACK_MAP,
13577                 .doit = nl80211_set_noack_map,
13578                 .policy = nl80211_policy,
13579                 .flags = GENL_UNS_ADMIN_PERM,
13580                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13581                                   NL80211_FLAG_NEED_RTNL,
13582         },
13583         {
13584                 .cmd = NL80211_CMD_START_P2P_DEVICE,
13585                 .doit = nl80211_start_p2p_device,
13586                 .policy = nl80211_policy,
13587                 .flags = GENL_UNS_ADMIN_PERM,
13588                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13589                                   NL80211_FLAG_NEED_RTNL,
13590         },
13591         {
13592                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13593                 .doit = nl80211_stop_p2p_device,
13594                 .policy = nl80211_policy,
13595                 .flags = GENL_UNS_ADMIN_PERM,
13596                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13597                                   NL80211_FLAG_NEED_RTNL,
13598         },
13599         {
13600                 .cmd = NL80211_CMD_START_NAN,
13601                 .doit = nl80211_start_nan,
13602                 .policy = nl80211_policy,
13603                 .flags = GENL_ADMIN_PERM,
13604                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13605                                   NL80211_FLAG_NEED_RTNL,
13606         },
13607         {
13608                 .cmd = NL80211_CMD_STOP_NAN,
13609                 .doit = nl80211_stop_nan,
13610                 .policy = nl80211_policy,
13611                 .flags = GENL_ADMIN_PERM,
13612                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13613                                   NL80211_FLAG_NEED_RTNL,
13614         },
13615         {
13616                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13617                 .doit = nl80211_nan_add_func,
13618                 .policy = nl80211_policy,
13619                 .flags = GENL_ADMIN_PERM,
13620                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13621                                   NL80211_FLAG_NEED_RTNL,
13622         },
13623         {
13624                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13625                 .doit = nl80211_nan_del_func,
13626                 .policy = nl80211_policy,
13627                 .flags = GENL_ADMIN_PERM,
13628                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13629                                   NL80211_FLAG_NEED_RTNL,
13630         },
13631         {
13632                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13633                 .doit = nl80211_nan_change_config,
13634                 .policy = nl80211_policy,
13635                 .flags = GENL_ADMIN_PERM,
13636                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13637                                   NL80211_FLAG_NEED_RTNL,
13638         },
13639         {
13640                 .cmd = NL80211_CMD_SET_MCAST_RATE,
13641                 .doit = nl80211_set_mcast_rate,
13642                 .policy = nl80211_policy,
13643                 .flags = GENL_UNS_ADMIN_PERM,
13644                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13645                                   NL80211_FLAG_NEED_RTNL,
13646         },
13647         {
13648                 .cmd = NL80211_CMD_SET_MAC_ACL,
13649                 .doit = nl80211_set_mac_acl,
13650                 .policy = nl80211_policy,
13651                 .flags = GENL_UNS_ADMIN_PERM,
13652                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13653                                   NL80211_FLAG_NEED_RTNL,
13654         },
13655         {
13656                 .cmd = NL80211_CMD_RADAR_DETECT,
13657                 .doit = nl80211_start_radar_detection,
13658                 .policy = nl80211_policy,
13659                 .flags = GENL_UNS_ADMIN_PERM,
13660                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13661                                   NL80211_FLAG_NEED_RTNL,
13662         },
13663         {
13664                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13665                 .doit = nl80211_get_protocol_features,
13666                 .policy = nl80211_policy,
13667         },
13668         {
13669                 .cmd = NL80211_CMD_UPDATE_FT_IES,
13670                 .doit = nl80211_update_ft_ies,
13671                 .policy = nl80211_policy,
13672                 .flags = GENL_UNS_ADMIN_PERM,
13673                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13674                                   NL80211_FLAG_NEED_RTNL,
13675         },
13676         {
13677                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13678                 .doit = nl80211_crit_protocol_start,
13679                 .policy = nl80211_policy,
13680                 .flags = GENL_UNS_ADMIN_PERM,
13681                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13682                                   NL80211_FLAG_NEED_RTNL,
13683         },
13684         {
13685                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13686                 .doit = nl80211_crit_protocol_stop,
13687                 .policy = nl80211_policy,
13688                 .flags = GENL_UNS_ADMIN_PERM,
13689                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13690                                   NL80211_FLAG_NEED_RTNL,
13691         },
13692         {
13693                 .cmd = NL80211_CMD_GET_COALESCE,
13694                 .doit = nl80211_get_coalesce,
13695                 .policy = nl80211_policy,
13696                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13697                                   NL80211_FLAG_NEED_RTNL,
13698         },
13699         {
13700                 .cmd = NL80211_CMD_SET_COALESCE,
13701                 .doit = nl80211_set_coalesce,
13702                 .policy = nl80211_policy,
13703                 .flags = GENL_UNS_ADMIN_PERM,
13704                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13705                                   NL80211_FLAG_NEED_RTNL,
13706         },
13707         {
13708                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13709                 .doit = nl80211_channel_switch,
13710                 .policy = nl80211_policy,
13711                 .flags = GENL_UNS_ADMIN_PERM,
13712                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13713                                   NL80211_FLAG_NEED_RTNL,
13714         },
13715         {
13716                 .cmd = NL80211_CMD_VENDOR,
13717                 .doit = nl80211_vendor_cmd,
13718                 .dumpit = nl80211_vendor_cmd_dump,
13719                 .policy = nl80211_policy,
13720                 .flags = GENL_UNS_ADMIN_PERM,
13721                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13722                                   NL80211_FLAG_NEED_RTNL,
13723         },
13724         {
13725                 .cmd = NL80211_CMD_SET_QOS_MAP,
13726                 .doit = nl80211_set_qos_map,
13727                 .policy = nl80211_policy,
13728                 .flags = GENL_UNS_ADMIN_PERM,
13729                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13730                                   NL80211_FLAG_NEED_RTNL,
13731         },
13732         {
13733                 .cmd = NL80211_CMD_ADD_TX_TS,
13734                 .doit = nl80211_add_tx_ts,
13735                 .policy = nl80211_policy,
13736                 .flags = GENL_UNS_ADMIN_PERM,
13737                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13738                                   NL80211_FLAG_NEED_RTNL,
13739         },
13740         {
13741                 .cmd = NL80211_CMD_DEL_TX_TS,
13742                 .doit = nl80211_del_tx_ts,
13743                 .policy = nl80211_policy,
13744                 .flags = GENL_UNS_ADMIN_PERM,
13745                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13746                                   NL80211_FLAG_NEED_RTNL,
13747         },
13748         {
13749                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13750                 .doit = nl80211_tdls_channel_switch,
13751                 .policy = nl80211_policy,
13752                 .flags = GENL_UNS_ADMIN_PERM,
13753                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13754                                   NL80211_FLAG_NEED_RTNL,
13755         },
13756         {
13757                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13758                 .doit = nl80211_tdls_cancel_channel_switch,
13759                 .policy = nl80211_policy,
13760                 .flags = GENL_UNS_ADMIN_PERM,
13761                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13762                                   NL80211_FLAG_NEED_RTNL,
13763         },
13764         {
13765                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13766                 .doit = nl80211_set_multicast_to_unicast,
13767                 .policy = nl80211_policy,
13768                 .flags = GENL_UNS_ADMIN_PERM,
13769                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13770                                   NL80211_FLAG_NEED_RTNL,
13771         },
13772         {
13773                 .cmd = NL80211_CMD_SET_PMK,
13774                 .doit = nl80211_set_pmk,
13775                 .policy = nl80211_policy,
13776                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13777                                   NL80211_FLAG_NEED_RTNL,
13778         },
13779         {
13780                 .cmd = NL80211_CMD_DEL_PMK,
13781                 .doit = nl80211_del_pmk,
13782                 .policy = nl80211_policy,
13783                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13784                                   NL80211_FLAG_NEED_RTNL,
13785         },
13786         {
13787                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
13788                 .doit = nl80211_external_auth,
13789                 .policy = nl80211_policy,
13790                 .flags = GENL_ADMIN_PERM,
13791                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13792                                   NL80211_FLAG_NEED_RTNL,
13793         },
13794         {
13795                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
13796                 .doit = nl80211_tx_control_port,
13797                 .policy = nl80211_policy,
13798                 .flags = GENL_UNS_ADMIN_PERM,
13799                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13800                                   NL80211_FLAG_NEED_RTNL,
13801         },
13802 };
13803
13804 static struct genl_family nl80211_fam __ro_after_init = {
13805         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
13806         .hdrsize = 0,                   /* no private header */
13807         .version = 1,                   /* no particular meaning now */
13808         .maxattr = NL80211_ATTR_MAX,
13809         .netnsok = true,
13810         .pre_doit = nl80211_pre_doit,
13811         .post_doit = nl80211_post_doit,
13812         .module = THIS_MODULE,
13813         .ops = nl80211_ops,
13814         .n_ops = ARRAY_SIZE(nl80211_ops),
13815         .mcgrps = nl80211_mcgrps,
13816         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13817 };
13818
13819 /* notification functions */
13820
13821 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13822                           enum nl80211_commands cmd)
13823 {
13824         struct sk_buff *msg;
13825         struct nl80211_dump_wiphy_state state = {};
13826
13827         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13828                 cmd != NL80211_CMD_DEL_WIPHY);
13829
13830         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13831         if (!msg)
13832                 return;
13833
13834         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13835                 nlmsg_free(msg);
13836                 return;
13837         }
13838
13839         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13840                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13841 }
13842
13843 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13844                                 struct wireless_dev *wdev,
13845                                 enum nl80211_commands cmd)
13846 {
13847         struct sk_buff *msg;
13848
13849         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13850                 cmd != NL80211_CMD_DEL_INTERFACE);
13851
13852         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13853         if (!msg)
13854                 return;
13855
13856         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13857                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13858                 nlmsg_free(msg);
13859                 return;
13860         }
13861
13862         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13863                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13864 }
13865
13866 static int nl80211_add_scan_req(struct sk_buff *msg,
13867                                 struct cfg80211_registered_device *rdev)
13868 {
13869         struct cfg80211_scan_request *req = rdev->scan_req;
13870         struct nlattr *nest;
13871         int i;
13872
13873         if (WARN_ON(!req))
13874                 return 0;
13875
13876         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13877         if (!nest)
13878                 goto nla_put_failure;
13879         for (i = 0; i < req->n_ssids; i++) {
13880                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13881                         goto nla_put_failure;
13882         }
13883         nla_nest_end(msg, nest);
13884
13885         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13886         if (!nest)
13887                 goto nla_put_failure;
13888         for (i = 0; i < req->n_channels; i++) {
13889                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13890                         goto nla_put_failure;
13891         }
13892         nla_nest_end(msg, nest);
13893
13894         if (req->ie &&
13895             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13896                 goto nla_put_failure;
13897
13898         if (req->flags &&
13899             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13900                 goto nla_put_failure;
13901
13902         if (req->info.scan_start_tsf &&
13903             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13904                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13905              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13906                      req->info.tsf_bssid)))
13907                 goto nla_put_failure;
13908
13909         return 0;
13910  nla_put_failure:
13911         return -ENOBUFS;
13912 }
13913
13914 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13915                                  struct cfg80211_registered_device *rdev,
13916                                  struct wireless_dev *wdev,
13917                                  u32 portid, u32 seq, int flags,
13918                                  u32 cmd)
13919 {
13920         void *hdr;
13921
13922         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13923         if (!hdr)
13924                 return -1;
13925
13926         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13927             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13928                                          wdev->netdev->ifindex)) ||
13929             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13930                               NL80211_ATTR_PAD))
13931                 goto nla_put_failure;
13932
13933         /* ignore errors and send incomplete event anyway */
13934         nl80211_add_scan_req(msg, rdev);
13935
13936         genlmsg_end(msg, hdr);
13937         return 0;
13938
13939  nla_put_failure:
13940         genlmsg_cancel(msg, hdr);
13941         return -EMSGSIZE;
13942 }
13943
13944 static int
13945 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13946                             struct cfg80211_sched_scan_request *req, u32 cmd)
13947 {
13948         void *hdr;
13949
13950         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13951         if (!hdr)
13952                 return -1;
13953
13954         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13955                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13956             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13957             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13958                               NL80211_ATTR_PAD))
13959                 goto nla_put_failure;
13960
13961         genlmsg_end(msg, hdr);
13962         return 0;
13963
13964  nla_put_failure:
13965         genlmsg_cancel(msg, hdr);
13966         return -EMSGSIZE;
13967 }
13968
13969 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13970                              struct wireless_dev *wdev)
13971 {
13972         struct sk_buff *msg;
13973
13974         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13975         if (!msg)
13976                 return;
13977
13978         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13979                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
13980                 nlmsg_free(msg);
13981                 return;
13982         }
13983
13984         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13985                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13986 }
13987
13988 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13989                                        struct wireless_dev *wdev, bool aborted)
13990 {
13991         struct sk_buff *msg;
13992
13993         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13994         if (!msg)
13995                 return NULL;
13996
13997         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13998                                   aborted ? NL80211_CMD_SCAN_ABORTED :
13999                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14000                 nlmsg_free(msg);
14001                 return NULL;
14002         }
14003
14004         return msg;
14005 }
14006
14007 /* send message created by nl80211_build_scan_msg() */
14008 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14009                            struct sk_buff *msg)
14010 {
14011         if (!msg)
14012                 return;
14013
14014         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14015                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14016 }
14017
14018 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14019 {
14020         struct sk_buff *msg;
14021
14022         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14023         if (!msg)
14024                 return;
14025
14026         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14027                 nlmsg_free(msg);
14028                 return;
14029         }
14030
14031         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14032                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14033 }
14034
14035 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14036                                           struct regulatory_request *request)
14037 {
14038         /* Userspace can always count this one always being set */
14039         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14040                 goto nla_put_failure;
14041
14042         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14043                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14044                                NL80211_REGDOM_TYPE_WORLD))
14045                         goto nla_put_failure;
14046         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14047                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14048                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14049                         goto nla_put_failure;
14050         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14051                    request->intersect) {
14052                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14053                                NL80211_REGDOM_TYPE_INTERSECTION))
14054                         goto nla_put_failure;
14055         } else {
14056                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14057                                NL80211_REGDOM_TYPE_COUNTRY) ||
14058                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14059                                    request->alpha2))
14060                         goto nla_put_failure;
14061         }
14062
14063         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14064                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14065
14066                 if (wiphy &&
14067                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14068                         goto nla_put_failure;
14069
14070                 if (wiphy &&
14071                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14072                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14073                         goto nla_put_failure;
14074         }
14075
14076         return true;
14077
14078 nla_put_failure:
14079         return false;
14080 }
14081
14082 /*
14083  * This can happen on global regulatory changes or device specific settings
14084  * based on custom regulatory domains.
14085  */
14086 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14087                                      struct regulatory_request *request)
14088 {
14089         struct sk_buff *msg;
14090         void *hdr;
14091
14092         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14093         if (!msg)
14094                 return;
14095
14096         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14097         if (!hdr) {
14098                 nlmsg_free(msg);
14099                 return;
14100         }
14101
14102         if (nl80211_reg_change_event_fill(msg, request) == false)
14103                 goto nla_put_failure;
14104
14105         genlmsg_end(msg, hdr);
14106
14107         rcu_read_lock();
14108         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14109                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14110         rcu_read_unlock();
14111
14112         return;
14113
14114 nla_put_failure:
14115         nlmsg_free(msg);
14116 }
14117
14118 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14119                                     struct net_device *netdev,
14120                                     const u8 *buf, size_t len,
14121                                     enum nl80211_commands cmd, gfp_t gfp,
14122                                     int uapsd_queues)
14123 {
14124         struct sk_buff *msg;
14125         void *hdr;
14126
14127         msg = nlmsg_new(100 + len, gfp);
14128         if (!msg)
14129                 return;
14130
14131         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14132         if (!hdr) {
14133                 nlmsg_free(msg);
14134                 return;
14135         }
14136
14137         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14138             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14139             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
14140                 goto nla_put_failure;
14141
14142         if (uapsd_queues >= 0) {
14143                 struct nlattr *nla_wmm =
14144                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
14145                 if (!nla_wmm)
14146                         goto nla_put_failure;
14147
14148                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14149                                uapsd_queues))
14150                         goto nla_put_failure;
14151
14152                 nla_nest_end(msg, nla_wmm);
14153         }
14154
14155         genlmsg_end(msg, hdr);
14156
14157         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14158                                 NL80211_MCGRP_MLME, gfp);
14159         return;
14160
14161  nla_put_failure:
14162         nlmsg_free(msg);
14163 }
14164
14165 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14166                           struct net_device *netdev, const u8 *buf,
14167                           size_t len, gfp_t gfp)
14168 {
14169         nl80211_send_mlme_event(rdev, netdev, buf, len,
14170                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
14171 }
14172
14173 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14174                            struct net_device *netdev, const u8 *buf,
14175                            size_t len, gfp_t gfp, int uapsd_queues)
14176 {
14177         nl80211_send_mlme_event(rdev, netdev, buf, len,
14178                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
14179 }
14180
14181 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14182                          struct net_device *netdev, const u8 *buf,
14183                          size_t len, gfp_t gfp)
14184 {
14185         nl80211_send_mlme_event(rdev, netdev, buf, len,
14186                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
14187 }
14188
14189 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14190                            struct net_device *netdev, const u8 *buf,
14191                            size_t len, gfp_t gfp)
14192 {
14193         nl80211_send_mlme_event(rdev, netdev, buf, len,
14194                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
14195 }
14196
14197 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14198                                   size_t len)
14199 {
14200         struct wireless_dev *wdev = dev->ieee80211_ptr;
14201         struct wiphy *wiphy = wdev->wiphy;
14202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14203         const struct ieee80211_mgmt *mgmt = (void *)buf;
14204         u32 cmd;
14205
14206         if (WARN_ON(len < 2))
14207                 return;
14208
14209         if (ieee80211_is_deauth(mgmt->frame_control))
14210                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14211         else
14212                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14213
14214         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14215         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
14216 }
14217 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14218
14219 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14220                                       struct net_device *netdev, int cmd,
14221                                       const u8 *addr, gfp_t gfp)
14222 {
14223         struct sk_buff *msg;
14224         void *hdr;
14225
14226         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14227         if (!msg)
14228                 return;
14229
14230         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14231         if (!hdr) {
14232                 nlmsg_free(msg);
14233                 return;
14234         }
14235
14236         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14237             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14238             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14239             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14240                 goto nla_put_failure;
14241
14242         genlmsg_end(msg, hdr);
14243
14244         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14245                                 NL80211_MCGRP_MLME, gfp);
14246         return;
14247
14248  nla_put_failure:
14249         nlmsg_free(msg);
14250 }
14251
14252 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14253                                struct net_device *netdev, const u8 *addr,
14254                                gfp_t gfp)
14255 {
14256         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14257                                   addr, gfp);
14258 }
14259
14260 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14261                                 struct net_device *netdev, const u8 *addr,
14262                                 gfp_t gfp)
14263 {
14264         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14265                                   addr, gfp);
14266 }
14267
14268 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14269                                  struct net_device *netdev,
14270                                  struct cfg80211_connect_resp_params *cr,
14271                                  gfp_t gfp)
14272 {
14273         struct sk_buff *msg;
14274         void *hdr;
14275
14276         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14277                         cr->fils.kek_len + cr->fils.pmk_len +
14278                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14279         if (!msg)
14280                 return;
14281
14282         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14283         if (!hdr) {
14284                 nlmsg_free(msg);
14285                 return;
14286         }
14287
14288         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14289             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14290             (cr->bssid &&
14291              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14292             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14293                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14294                         cr->status) ||
14295             (cr->status < 0 &&
14296              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14297               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14298                           cr->timeout_reason))) ||
14299             (cr->req_ie &&
14300              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14301             (cr->resp_ie &&
14302              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14303                      cr->resp_ie)) ||
14304             (cr->fils.update_erp_next_seq_num &&
14305              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14306                          cr->fils.erp_next_seq_num)) ||
14307             (cr->status == WLAN_STATUS_SUCCESS &&
14308              ((cr->fils.kek &&
14309                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14310                        cr->fils.kek)) ||
14311               (cr->fils.pmk &&
14312                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14313               (cr->fils.pmkid &&
14314                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14315                 goto nla_put_failure;
14316
14317         genlmsg_end(msg, hdr);
14318
14319         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14320                                 NL80211_MCGRP_MLME, gfp);
14321         return;
14322
14323  nla_put_failure:
14324         nlmsg_free(msg);
14325 }
14326
14327 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14328                          struct net_device *netdev,
14329                          struct cfg80211_roam_info *info, gfp_t gfp)
14330 {
14331         struct sk_buff *msg;
14332         void *hdr;
14333         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14334
14335         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
14336                         info->fils.kek_len + info->fils.pmk_len +
14337                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14338         if (!msg)
14339                 return;
14340
14341         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14342         if (!hdr) {
14343                 nlmsg_free(msg);
14344                 return;
14345         }
14346
14347         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14348             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14349             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14350             (info->req_ie &&
14351              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14352                      info->req_ie)) ||
14353             (info->resp_ie &&
14354              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14355                      info->resp_ie)) ||
14356             (info->fils.update_erp_next_seq_num &&
14357              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14358                          info->fils.erp_next_seq_num)) ||
14359             (info->fils.kek &&
14360              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
14361                      info->fils.kek)) ||
14362             (info->fils.pmk &&
14363              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
14364             (info->fils.pmkid &&
14365              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
14366                 goto nla_put_failure;
14367
14368         genlmsg_end(msg, hdr);
14369
14370         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14371                                 NL80211_MCGRP_MLME, gfp);
14372         return;
14373
14374  nla_put_failure:
14375         nlmsg_free(msg);
14376 }
14377
14378 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14379                                   struct net_device *netdev, const u8 *bssid)
14380 {
14381         struct sk_buff *msg;
14382         void *hdr;
14383
14384         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14385         if (!msg)
14386                 return;
14387
14388         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14389         if (!hdr) {
14390                 nlmsg_free(msg);
14391                 return;
14392         }
14393
14394         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14395                 goto nla_put_failure;
14396
14397         genlmsg_end(msg, hdr);
14398
14399         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14400                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14401         return;
14402
14403  nla_put_failure:
14404         nlmsg_free(msg);
14405 }
14406
14407 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14408                                struct net_device *netdev, u16 reason,
14409                                const u8 *ie, size_t ie_len, bool from_ap)
14410 {
14411         struct sk_buff *msg;
14412         void *hdr;
14413
14414         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14415         if (!msg)
14416                 return;
14417
14418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14419         if (!hdr) {
14420                 nlmsg_free(msg);
14421                 return;
14422         }
14423
14424         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14425             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14426             (reason &&
14427              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14428             (from_ap &&
14429              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14430             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14431                 goto nla_put_failure;
14432
14433         genlmsg_end(msg, hdr);
14434
14435         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14436                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14437         return;
14438
14439  nla_put_failure:
14440         nlmsg_free(msg);
14441 }
14442
14443 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14444                              struct net_device *netdev, const u8 *bssid,
14445                              gfp_t gfp)
14446 {
14447         struct sk_buff *msg;
14448         void *hdr;
14449
14450         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14451         if (!msg)
14452                 return;
14453
14454         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14455         if (!hdr) {
14456                 nlmsg_free(msg);
14457                 return;
14458         }
14459
14460         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14461             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14462             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14463                 goto nla_put_failure;
14464
14465         genlmsg_end(msg, hdr);
14466
14467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14468                                 NL80211_MCGRP_MLME, gfp);
14469         return;
14470
14471  nla_put_failure:
14472         nlmsg_free(msg);
14473 }
14474
14475 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14476                                         const u8* ie, u8 ie_len, gfp_t gfp)
14477 {
14478         struct wireless_dev *wdev = dev->ieee80211_ptr;
14479         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14480         struct sk_buff *msg;
14481         void *hdr;
14482
14483         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14484                 return;
14485
14486         trace_cfg80211_notify_new_peer_candidate(dev, addr);
14487
14488         msg = nlmsg_new(100 + ie_len, gfp);
14489         if (!msg)
14490                 return;
14491
14492         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14493         if (!hdr) {
14494                 nlmsg_free(msg);
14495                 return;
14496         }
14497
14498         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14499             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14500             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14501             (ie_len && ie &&
14502              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14503                 goto nla_put_failure;
14504
14505         genlmsg_end(msg, hdr);
14506
14507         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14508                                 NL80211_MCGRP_MLME, gfp);
14509         return;
14510
14511  nla_put_failure:
14512         nlmsg_free(msg);
14513 }
14514 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14515
14516 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14517                                  struct net_device *netdev, const u8 *addr,
14518                                  enum nl80211_key_type key_type, int key_id,
14519                                  const u8 *tsc, gfp_t gfp)
14520 {
14521         struct sk_buff *msg;
14522         void *hdr;
14523
14524         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14525         if (!msg)
14526                 return;
14527
14528         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14529         if (!hdr) {
14530                 nlmsg_free(msg);
14531                 return;
14532         }
14533
14534         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14535             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14536             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14537             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14538             (key_id != -1 &&
14539              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14540             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14541                 goto nla_put_failure;
14542
14543         genlmsg_end(msg, hdr);
14544
14545         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14546                                 NL80211_MCGRP_MLME, gfp);
14547         return;
14548
14549  nla_put_failure:
14550         nlmsg_free(msg);
14551 }
14552
14553 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14554                                     struct ieee80211_channel *channel_before,
14555                                     struct ieee80211_channel *channel_after)
14556 {
14557         struct sk_buff *msg;
14558         void *hdr;
14559         struct nlattr *nl_freq;
14560
14561         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14562         if (!msg)
14563                 return;
14564
14565         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14566         if (!hdr) {
14567                 nlmsg_free(msg);
14568                 return;
14569         }
14570
14571         /*
14572          * Since we are applying the beacon hint to a wiphy we know its
14573          * wiphy_idx is valid
14574          */
14575         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14576                 goto nla_put_failure;
14577
14578         /* Before */
14579         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14580         if (!nl_freq)
14581                 goto nla_put_failure;
14582
14583         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14584                 goto nla_put_failure;
14585         nla_nest_end(msg, nl_freq);
14586
14587         /* After */
14588         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14589         if (!nl_freq)
14590                 goto nla_put_failure;
14591
14592         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14593                 goto nla_put_failure;
14594         nla_nest_end(msg, nl_freq);
14595
14596         genlmsg_end(msg, hdr);
14597
14598         rcu_read_lock();
14599         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14600                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14601         rcu_read_unlock();
14602
14603         return;
14604
14605 nla_put_failure:
14606         nlmsg_free(msg);
14607 }
14608
14609 static void nl80211_send_remain_on_chan_event(
14610         int cmd, struct cfg80211_registered_device *rdev,
14611         struct wireless_dev *wdev, u64 cookie,
14612         struct ieee80211_channel *chan,
14613         unsigned int duration, gfp_t gfp)
14614 {
14615         struct sk_buff *msg;
14616         void *hdr;
14617
14618         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14619         if (!msg)
14620                 return;
14621
14622         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14623         if (!hdr) {
14624                 nlmsg_free(msg);
14625                 return;
14626         }
14627
14628         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14629             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14630                                          wdev->netdev->ifindex)) ||
14631             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14632                               NL80211_ATTR_PAD) ||
14633             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14634             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14635                         NL80211_CHAN_NO_HT) ||
14636             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14637                               NL80211_ATTR_PAD))
14638                 goto nla_put_failure;
14639
14640         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14641             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14642                 goto nla_put_failure;
14643
14644         genlmsg_end(msg, hdr);
14645
14646         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14647                                 NL80211_MCGRP_MLME, gfp);
14648         return;
14649
14650  nla_put_failure:
14651         nlmsg_free(msg);
14652 }
14653
14654 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14655                                struct ieee80211_channel *chan,
14656                                unsigned int duration, gfp_t gfp)
14657 {
14658         struct wiphy *wiphy = wdev->wiphy;
14659         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14660
14661         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14662         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14663                                           rdev, wdev, cookie, chan,
14664                                           duration, gfp);
14665 }
14666 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14667
14668 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14669                                         struct ieee80211_channel *chan,
14670                                         gfp_t gfp)
14671 {
14672         struct wiphy *wiphy = wdev->wiphy;
14673         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14674
14675         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14676         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14677                                           rdev, wdev, cookie, chan, 0, gfp);
14678 }
14679 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14680
14681 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14682                       struct station_info *sinfo, gfp_t gfp)
14683 {
14684         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14685         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14686         struct sk_buff *msg;
14687
14688         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14689
14690         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14691         if (!msg)
14692                 return;
14693
14694         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14695                                  rdev, dev, mac_addr, sinfo) < 0) {
14696                 nlmsg_free(msg);
14697                 return;
14698         }
14699
14700         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14701                                 NL80211_MCGRP_MLME, gfp);
14702 }
14703 EXPORT_SYMBOL(cfg80211_new_sta);
14704
14705 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14706                             struct station_info *sinfo, gfp_t gfp)
14707 {
14708         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14709         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14710         struct sk_buff *msg;
14711         struct station_info empty_sinfo = {};
14712
14713         if (!sinfo)
14714                 sinfo = &empty_sinfo;
14715
14716         trace_cfg80211_del_sta(dev, mac_addr);
14717
14718         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14719         if (!msg) {
14720                 cfg80211_sinfo_release_content(sinfo);
14721                 return;
14722         }
14723
14724         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14725                                  rdev, dev, mac_addr, sinfo) < 0) {
14726                 nlmsg_free(msg);
14727                 return;
14728         }
14729
14730         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14731                                 NL80211_MCGRP_MLME, gfp);
14732 }
14733 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14734
14735 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14736                           enum nl80211_connect_failed_reason reason,
14737                           gfp_t gfp)
14738 {
14739         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14740         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14741         struct sk_buff *msg;
14742         void *hdr;
14743
14744         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14745         if (!msg)
14746                 return;
14747
14748         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14749         if (!hdr) {
14750                 nlmsg_free(msg);
14751                 return;
14752         }
14753
14754         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14755             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14756             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14757                 goto nla_put_failure;
14758
14759         genlmsg_end(msg, hdr);
14760
14761         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14762                                 NL80211_MCGRP_MLME, gfp);
14763         return;
14764
14765  nla_put_failure:
14766         nlmsg_free(msg);
14767 }
14768 EXPORT_SYMBOL(cfg80211_conn_failed);
14769
14770 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14771                                        const u8 *addr, gfp_t gfp)
14772 {
14773         struct wireless_dev *wdev = dev->ieee80211_ptr;
14774         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14775         struct sk_buff *msg;
14776         void *hdr;
14777         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14778
14779         if (!nlportid)
14780                 return false;
14781
14782         msg = nlmsg_new(100, gfp);
14783         if (!msg)
14784                 return true;
14785
14786         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14787         if (!hdr) {
14788                 nlmsg_free(msg);
14789                 return true;
14790         }
14791
14792         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14793             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14795                 goto nla_put_failure;
14796
14797         genlmsg_end(msg, hdr);
14798         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14799         return true;
14800
14801  nla_put_failure:
14802         nlmsg_free(msg);
14803         return true;
14804 }
14805
14806 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14807                                 const u8 *addr, gfp_t gfp)
14808 {
14809         struct wireless_dev *wdev = dev->ieee80211_ptr;
14810         bool ret;
14811
14812         trace_cfg80211_rx_spurious_frame(dev, addr);
14813
14814         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14815                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14816                 trace_cfg80211_return_bool(false);
14817                 return false;
14818         }
14819         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14820                                          addr, gfp);
14821         trace_cfg80211_return_bool(ret);
14822         return ret;
14823 }
14824 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14825
14826 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14827                                         const u8 *addr, gfp_t gfp)
14828 {
14829         struct wireless_dev *wdev = dev->ieee80211_ptr;
14830         bool ret;
14831
14832         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14833
14834         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14835                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14836                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14837                 trace_cfg80211_return_bool(false);
14838                 return false;
14839         }
14840         ret = __nl80211_unexpected_frame(dev,
14841                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14842                                          addr, gfp);
14843         trace_cfg80211_return_bool(ret);
14844         return ret;
14845 }
14846 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14847
14848 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14849                       struct wireless_dev *wdev, u32 nlportid,
14850                       int freq, int sig_dbm,
14851                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14852 {
14853         struct net_device *netdev = wdev->netdev;
14854         struct sk_buff *msg;
14855         void *hdr;
14856
14857         msg = nlmsg_new(100 + len, gfp);
14858         if (!msg)
14859                 return -ENOMEM;
14860
14861         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14862         if (!hdr) {
14863                 nlmsg_free(msg);
14864                 return -ENOMEM;
14865         }
14866
14867         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14868             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14869                                         netdev->ifindex)) ||
14870             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14871                               NL80211_ATTR_PAD) ||
14872             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14873             (sig_dbm &&
14874              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14875             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14876             (flags &&
14877              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14878                 goto nla_put_failure;
14879
14880         genlmsg_end(msg, hdr);
14881
14882         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14883
14884  nla_put_failure:
14885         nlmsg_free(msg);
14886         return -ENOBUFS;
14887 }
14888
14889 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14890                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
14891 {
14892         struct wiphy *wiphy = wdev->wiphy;
14893         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14894         struct net_device *netdev = wdev->netdev;
14895         struct sk_buff *msg;
14896         void *hdr;
14897
14898         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14899
14900         msg = nlmsg_new(100 + len, gfp);
14901         if (!msg)
14902                 return;
14903
14904         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14905         if (!hdr) {
14906                 nlmsg_free(msg);
14907                 return;
14908         }
14909
14910         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14911             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14912                                    netdev->ifindex)) ||
14913             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14914                               NL80211_ATTR_PAD) ||
14915             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14916             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14917                               NL80211_ATTR_PAD) ||
14918             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14919                 goto nla_put_failure;
14920
14921         genlmsg_end(msg, hdr);
14922
14923         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14924                                 NL80211_MCGRP_MLME, gfp);
14925         return;
14926
14927  nla_put_failure:
14928         nlmsg_free(msg);
14929 }
14930 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14931
14932 static int __nl80211_rx_control_port(struct net_device *dev,
14933                                      const u8 *buf, size_t len,
14934                                      const u8 *addr, u16 proto,
14935                                      bool unencrypted, gfp_t gfp)
14936 {
14937         struct wireless_dev *wdev = dev->ieee80211_ptr;
14938         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14939         struct sk_buff *msg;
14940         void *hdr;
14941         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
14942
14943         if (!nlportid)
14944                 return -ENOENT;
14945
14946         msg = nlmsg_new(100 + len, gfp);
14947         if (!msg)
14948                 return -ENOMEM;
14949
14950         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
14951         if (!hdr) {
14952                 nlmsg_free(msg);
14953                 return -ENOBUFS;
14954         }
14955
14956         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14957             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14958             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14959                               NL80211_ATTR_PAD) ||
14960             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14961             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14962             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
14963             (unencrypted && nla_put_flag(msg,
14964                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
14965                 goto nla_put_failure;
14966
14967         genlmsg_end(msg, hdr);
14968
14969         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14970
14971  nla_put_failure:
14972         nlmsg_free(msg);
14973         return -ENOBUFS;
14974 }
14975
14976 bool cfg80211_rx_control_port(struct net_device *dev,
14977                               const u8 *buf, size_t len,
14978                               const u8 *addr, u16 proto, bool unencrypted)
14979 {
14980         int ret;
14981
14982         trace_cfg80211_rx_control_port(dev, buf, len, addr, proto, unencrypted);
14983         ret = __nl80211_rx_control_port(dev, buf, len, addr, proto,
14984                                         unencrypted, GFP_ATOMIC);
14985         trace_cfg80211_return_bool(ret == 0);
14986         return ret == 0;
14987 }
14988 EXPORT_SYMBOL(cfg80211_rx_control_port);
14989
14990 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14991                                             const char *mac, gfp_t gfp)
14992 {
14993         struct wireless_dev *wdev = dev->ieee80211_ptr;
14994         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14995         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14996         void **cb;
14997
14998         if (!msg)
14999                 return NULL;
15000
15001         cb = (void **)msg->cb;
15002
15003         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15004         if (!cb[0]) {
15005                 nlmsg_free(msg);
15006                 return NULL;
15007         }
15008
15009         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15010             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15011                 goto nla_put_failure;
15012
15013         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15014                 goto nla_put_failure;
15015
15016         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
15017         if (!cb[1])
15018                 goto nla_put_failure;
15019
15020         cb[2] = rdev;
15021
15022         return msg;
15023  nla_put_failure:
15024         nlmsg_free(msg);
15025         return NULL;
15026 }
15027
15028 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15029 {
15030         void **cb = (void **)msg->cb;
15031         struct cfg80211_registered_device *rdev = cb[2];
15032
15033         nla_nest_end(msg, cb[1]);
15034         genlmsg_end(msg, cb[0]);
15035
15036         memset(msg->cb, 0, sizeof(msg->cb));
15037
15038         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15039                                 NL80211_MCGRP_MLME, gfp);
15040 }
15041
15042 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15043                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15044                               s32 rssi_level, gfp_t gfp)
15045 {
15046         struct sk_buff *msg;
15047         struct wireless_dev *wdev = dev->ieee80211_ptr;
15048         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15049
15050         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15051
15052         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15053                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15054                 return;
15055
15056         if (wdev->cqm_config) {
15057                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15058
15059                 cfg80211_cqm_rssi_update(rdev, dev);
15060
15061                 if (rssi_level == 0)
15062                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15063         }
15064
15065         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15066         if (!msg)
15067                 return;
15068
15069         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15070                         rssi_event))
15071                 goto nla_put_failure;
15072
15073         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15074                                       rssi_level))
15075                 goto nla_put_failure;
15076
15077         cfg80211_send_cqm(msg, gfp);
15078
15079         return;
15080
15081  nla_put_failure:
15082         nlmsg_free(msg);
15083 }
15084 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15085
15086 void cfg80211_cqm_txe_notify(struct net_device *dev,
15087                              const u8 *peer, u32 num_packets,
15088                              u32 rate, u32 intvl, gfp_t gfp)
15089 {
15090         struct sk_buff *msg;
15091
15092         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15093         if (!msg)
15094                 return;
15095
15096         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15097                 goto nla_put_failure;
15098
15099         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15100                 goto nla_put_failure;
15101
15102         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15103                 goto nla_put_failure;
15104
15105         cfg80211_send_cqm(msg, gfp);
15106         return;
15107
15108  nla_put_failure:
15109         nlmsg_free(msg);
15110 }
15111 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15112
15113 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15114                                  const u8 *peer, u32 num_packets, gfp_t gfp)
15115 {
15116         struct sk_buff *msg;
15117
15118         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15119
15120         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15121         if (!msg)
15122                 return;
15123
15124         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15125                 goto nla_put_failure;
15126
15127         cfg80211_send_cqm(msg, gfp);
15128         return;
15129
15130  nla_put_failure:
15131         nlmsg_free(msg);
15132 }
15133 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15134
15135 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15136 {
15137         struct sk_buff *msg;
15138
15139         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15140         if (!msg)
15141                 return;
15142
15143         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15144                 goto nla_put_failure;
15145
15146         cfg80211_send_cqm(msg, gfp);
15147         return;
15148
15149  nla_put_failure:
15150         nlmsg_free(msg);
15151 }
15152 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15153
15154 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15155                                      struct net_device *netdev, const u8 *bssid,
15156                                      const u8 *replay_ctr, gfp_t gfp)
15157 {
15158         struct sk_buff *msg;
15159         struct nlattr *rekey_attr;
15160         void *hdr;
15161
15162         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15163         if (!msg)
15164                 return;
15165
15166         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15167         if (!hdr) {
15168                 nlmsg_free(msg);
15169                 return;
15170         }
15171
15172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15173             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15174             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15175                 goto nla_put_failure;
15176
15177         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15178         if (!rekey_attr)
15179                 goto nla_put_failure;
15180
15181         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15182                     NL80211_REPLAY_CTR_LEN, replay_ctr))
15183                 goto nla_put_failure;
15184
15185         nla_nest_end(msg, rekey_attr);
15186
15187         genlmsg_end(msg, hdr);
15188
15189         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15190                                 NL80211_MCGRP_MLME, gfp);
15191         return;
15192
15193  nla_put_failure:
15194         nlmsg_free(msg);
15195 }
15196
15197 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15198                                const u8 *replay_ctr, gfp_t gfp)
15199 {
15200         struct wireless_dev *wdev = dev->ieee80211_ptr;
15201         struct wiphy *wiphy = wdev->wiphy;
15202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15203
15204         trace_cfg80211_gtk_rekey_notify(dev, bssid);
15205         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15206 }
15207 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15208
15209 static void
15210 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15211                                struct net_device *netdev, int index,
15212                                const u8 *bssid, bool preauth, gfp_t gfp)
15213 {
15214         struct sk_buff *msg;
15215         struct nlattr *attr;
15216         void *hdr;
15217
15218         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15219         if (!msg)
15220                 return;
15221
15222         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15223         if (!hdr) {
15224                 nlmsg_free(msg);
15225                 return;
15226         }
15227
15228         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15229             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15230                 goto nla_put_failure;
15231
15232         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15233         if (!attr)
15234                 goto nla_put_failure;
15235
15236         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15237             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15238             (preauth &&
15239              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15240                 goto nla_put_failure;
15241
15242         nla_nest_end(msg, attr);
15243
15244         genlmsg_end(msg, hdr);
15245
15246         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15247                                 NL80211_MCGRP_MLME, gfp);
15248         return;
15249
15250  nla_put_failure:
15251         nlmsg_free(msg);
15252 }
15253
15254 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15255                                      const u8 *bssid, bool preauth, gfp_t gfp)
15256 {
15257         struct wireless_dev *wdev = dev->ieee80211_ptr;
15258         struct wiphy *wiphy = wdev->wiphy;
15259         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15260
15261         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15262         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15263 }
15264 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15265
15266 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15267                                      struct net_device *netdev,
15268                                      struct cfg80211_chan_def *chandef,
15269                                      gfp_t gfp,
15270                                      enum nl80211_commands notif,
15271                                      u8 count)
15272 {
15273         struct sk_buff *msg;
15274         void *hdr;
15275
15276         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15277         if (!msg)
15278                 return;
15279
15280         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15281         if (!hdr) {
15282                 nlmsg_free(msg);
15283                 return;
15284         }
15285
15286         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15287                 goto nla_put_failure;
15288
15289         if (nl80211_send_chandef(msg, chandef))
15290                 goto nla_put_failure;
15291
15292         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15293             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15294                         goto nla_put_failure;
15295
15296         genlmsg_end(msg, hdr);
15297
15298         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15299                                 NL80211_MCGRP_MLME, gfp);
15300         return;
15301
15302  nla_put_failure:
15303         nlmsg_free(msg);
15304 }
15305
15306 void cfg80211_ch_switch_notify(struct net_device *dev,
15307                                struct cfg80211_chan_def *chandef)
15308 {
15309         struct wireless_dev *wdev = dev->ieee80211_ptr;
15310         struct wiphy *wiphy = wdev->wiphy;
15311         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15312
15313         ASSERT_WDEV_LOCK(wdev);
15314
15315         trace_cfg80211_ch_switch_notify(dev, chandef);
15316
15317         wdev->chandef = *chandef;
15318         wdev->preset_chandef = *chandef;
15319         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15320                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15321 }
15322 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15323
15324 void cfg80211_ch_switch_started_notify(struct net_device *dev,
15325                                        struct cfg80211_chan_def *chandef,
15326                                        u8 count)
15327 {
15328         struct wireless_dev *wdev = dev->ieee80211_ptr;
15329         struct wiphy *wiphy = wdev->wiphy;
15330         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15331
15332         trace_cfg80211_ch_switch_started_notify(dev, chandef);
15333
15334         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15335                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15336 }
15337 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15338
15339 void
15340 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15341                      const struct cfg80211_chan_def *chandef,
15342                      enum nl80211_radar_event event,
15343                      struct net_device *netdev, gfp_t gfp)
15344 {
15345         struct sk_buff *msg;
15346         void *hdr;
15347
15348         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15349         if (!msg)
15350                 return;
15351
15352         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15353         if (!hdr) {
15354                 nlmsg_free(msg);
15355                 return;
15356         }
15357
15358         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15359                 goto nla_put_failure;
15360
15361         /* NOP and radar events don't need a netdev parameter */
15362         if (netdev) {
15363                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15364
15365                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15366                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15367                                       NL80211_ATTR_PAD))
15368                         goto nla_put_failure;
15369         }
15370
15371         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15372                 goto nla_put_failure;
15373
15374         if (nl80211_send_chandef(msg, chandef))
15375                 goto nla_put_failure;
15376
15377         genlmsg_end(msg, hdr);
15378
15379         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15380                                 NL80211_MCGRP_MLME, gfp);
15381         return;
15382
15383  nla_put_failure:
15384         nlmsg_free(msg);
15385 }
15386
15387 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15388                                        struct sta_opmode_info *sta_opmode,
15389                                        gfp_t gfp)
15390 {
15391         struct sk_buff *msg;
15392         struct wireless_dev *wdev = dev->ieee80211_ptr;
15393         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15394         void *hdr;
15395
15396         if (WARN_ON(!mac))
15397                 return;
15398
15399         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15400         if (!msg)
15401                 return;
15402
15403         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15404         if (!hdr) {
15405                 nlmsg_free(msg);
15406                 return;
15407         }
15408
15409         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15410                 goto nla_put_failure;
15411
15412         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15413                 goto nla_put_failure;
15414
15415         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15416                 goto nla_put_failure;
15417
15418         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15419             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15420                 goto nla_put_failure;
15421
15422         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15423             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15424                 goto nla_put_failure;
15425
15426         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15427             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15428                 goto nla_put_failure;
15429
15430         genlmsg_end(msg, hdr);
15431
15432         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15433                                 NL80211_MCGRP_MLME, gfp);
15434
15435         return;
15436
15437 nla_put_failure:
15438         nlmsg_free(msg);
15439 }
15440 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15441
15442 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15443                            u64 cookie, bool acked, s32 ack_signal,
15444                            bool is_valid_ack_signal, gfp_t gfp)
15445 {
15446         struct wireless_dev *wdev = dev->ieee80211_ptr;
15447         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15448         struct sk_buff *msg;
15449         void *hdr;
15450
15451         trace_cfg80211_probe_status(dev, addr, cookie, acked);
15452
15453         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15454
15455         if (!msg)
15456                 return;
15457
15458         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15459         if (!hdr) {
15460                 nlmsg_free(msg);
15461                 return;
15462         }
15463
15464         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15465             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15466             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15467             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15468                               NL80211_ATTR_PAD) ||
15469             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15470             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15471                                                 ack_signal)))
15472                 goto nla_put_failure;
15473
15474         genlmsg_end(msg, hdr);
15475
15476         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15477                                 NL80211_MCGRP_MLME, gfp);
15478         return;
15479
15480  nla_put_failure:
15481         nlmsg_free(msg);
15482 }
15483 EXPORT_SYMBOL(cfg80211_probe_status);
15484
15485 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15486                                  const u8 *frame, size_t len,
15487                                  int freq, int sig_dbm)
15488 {
15489         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15490         struct sk_buff *msg;
15491         void *hdr;
15492         struct cfg80211_beacon_registration *reg;
15493
15494         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15495
15496         spin_lock_bh(&rdev->beacon_registrations_lock);
15497         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15498                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15499                 if (!msg) {
15500                         spin_unlock_bh(&rdev->beacon_registrations_lock);
15501                         return;
15502                 }
15503
15504                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15505                 if (!hdr)
15506                         goto nla_put_failure;
15507
15508                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15509                     (freq &&
15510                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15511                     (sig_dbm &&
15512                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15513                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15514                         goto nla_put_failure;
15515
15516                 genlmsg_end(msg, hdr);
15517
15518                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15519         }
15520         spin_unlock_bh(&rdev->beacon_registrations_lock);
15521         return;
15522
15523  nla_put_failure:
15524         spin_unlock_bh(&rdev->beacon_registrations_lock);
15525         nlmsg_free(msg);
15526 }
15527 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15528
15529 #ifdef CONFIG_PM
15530 static int cfg80211_net_detect_results(struct sk_buff *msg,
15531                                        struct cfg80211_wowlan_wakeup *wakeup)
15532 {
15533         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15534         struct nlattr *nl_results, *nl_match, *nl_freqs;
15535         int i, j;
15536
15537         nl_results = nla_nest_start(
15538                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15539         if (!nl_results)
15540                 return -EMSGSIZE;
15541
15542         for (i = 0; i < nd->n_matches; i++) {
15543                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15544
15545                 nl_match = nla_nest_start(msg, i);
15546                 if (!nl_match)
15547                         break;
15548
15549                 /* The SSID attribute is optional in nl80211, but for
15550                  * simplicity reasons it's always present in the
15551                  * cfg80211 structure.  If a driver can't pass the
15552                  * SSID, that needs to be changed.  A zero length SSID
15553                  * is still a valid SSID (wildcard), so it cannot be
15554                  * used for this purpose.
15555                  */
15556                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15557                             match->ssid.ssid)) {
15558                         nla_nest_cancel(msg, nl_match);
15559                         goto out;
15560                 }
15561
15562                 if (match->n_channels) {
15563                         nl_freqs = nla_nest_start(
15564                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15565                         if (!nl_freqs) {
15566                                 nla_nest_cancel(msg, nl_match);
15567                                 goto out;
15568                         }
15569
15570                         for (j = 0; j < match->n_channels; j++) {
15571                                 if (nla_put_u32(msg, j, match->channels[j])) {
15572                                         nla_nest_cancel(msg, nl_freqs);
15573                                         nla_nest_cancel(msg, nl_match);
15574                                         goto out;
15575                                 }
15576                         }
15577
15578                         nla_nest_end(msg, nl_freqs);
15579                 }
15580
15581                 nla_nest_end(msg, nl_match);
15582         }
15583
15584 out:
15585         nla_nest_end(msg, nl_results);
15586         return 0;
15587 }
15588
15589 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15590                                    struct cfg80211_wowlan_wakeup *wakeup,
15591                                    gfp_t gfp)
15592 {
15593         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15594         struct sk_buff *msg;
15595         void *hdr;
15596         int size = 200;
15597
15598         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15599
15600         if (wakeup)
15601                 size += wakeup->packet_present_len;
15602
15603         msg = nlmsg_new(size, gfp);
15604         if (!msg)
15605                 return;
15606
15607         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15608         if (!hdr)
15609                 goto free_msg;
15610
15611         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15612             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15613                               NL80211_ATTR_PAD))
15614                 goto free_msg;
15615
15616         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15617                                         wdev->netdev->ifindex))
15618                 goto free_msg;
15619
15620         if (wakeup) {
15621                 struct nlattr *reasons;
15622
15623                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15624                 if (!reasons)
15625                         goto free_msg;
15626
15627                 if (wakeup->disconnect &&
15628                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15629                         goto free_msg;
15630                 if (wakeup->magic_pkt &&
15631                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15632                         goto free_msg;
15633                 if (wakeup->gtk_rekey_failure &&
15634                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15635                         goto free_msg;
15636                 if (wakeup->eap_identity_req &&
15637                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15638                         goto free_msg;
15639                 if (wakeup->four_way_handshake &&
15640                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15641                         goto free_msg;
15642                 if (wakeup->rfkill_release &&
15643                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15644                         goto free_msg;
15645
15646                 if (wakeup->pattern_idx >= 0 &&
15647                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15648                                 wakeup->pattern_idx))
15649                         goto free_msg;
15650
15651                 if (wakeup->tcp_match &&
15652                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15653                         goto free_msg;
15654
15655                 if (wakeup->tcp_connlost &&
15656                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15657                         goto free_msg;
15658
15659                 if (wakeup->tcp_nomoretokens &&
15660                     nla_put_flag(msg,
15661                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15662                         goto free_msg;
15663
15664                 if (wakeup->packet) {
15665                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15666                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15667
15668                         if (!wakeup->packet_80211) {
15669                                 pkt_attr =
15670                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15671                                 len_attr =
15672                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15673                         }
15674
15675                         if (wakeup->packet_len &&
15676                             nla_put_u32(msg, len_attr, wakeup->packet_len))
15677                                 goto free_msg;
15678
15679                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15680                                     wakeup->packet))
15681                                 goto free_msg;
15682                 }
15683
15684                 if (wakeup->net_detect &&
15685                     cfg80211_net_detect_results(msg, wakeup))
15686                                 goto free_msg;
15687
15688                 nla_nest_end(msg, reasons);
15689         }
15690
15691         genlmsg_end(msg, hdr);
15692
15693         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15694                                 NL80211_MCGRP_MLME, gfp);
15695         return;
15696
15697  free_msg:
15698         nlmsg_free(msg);
15699 }
15700 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15701 #endif
15702
15703 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15704                                 enum nl80211_tdls_operation oper,
15705                                 u16 reason_code, gfp_t gfp)
15706 {
15707         struct wireless_dev *wdev = dev->ieee80211_ptr;
15708         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15709         struct sk_buff *msg;
15710         void *hdr;
15711
15712         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15713                                          reason_code);
15714
15715         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15716         if (!msg)
15717                 return;
15718
15719         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15720         if (!hdr) {
15721                 nlmsg_free(msg);
15722                 return;
15723         }
15724
15725         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15726             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15727             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15728             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15729             (reason_code > 0 &&
15730              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15731                 goto nla_put_failure;
15732
15733         genlmsg_end(msg, hdr);
15734
15735         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15736                                 NL80211_MCGRP_MLME, gfp);
15737         return;
15738
15739  nla_put_failure:
15740         nlmsg_free(msg);
15741 }
15742 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15743
15744 static int nl80211_netlink_notify(struct notifier_block * nb,
15745                                   unsigned long state,
15746                                   void *_notify)
15747 {
15748         struct netlink_notify *notify = _notify;
15749         struct cfg80211_registered_device *rdev;
15750         struct wireless_dev *wdev;
15751         struct cfg80211_beacon_registration *reg, *tmp;
15752
15753         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15754                 return NOTIFY_DONE;
15755
15756         rcu_read_lock();
15757
15758         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15759                 struct cfg80211_sched_scan_request *sched_scan_req;
15760
15761                 list_for_each_entry_rcu(sched_scan_req,
15762                                         &rdev->sched_scan_req_list,
15763                                         list) {
15764                         if (sched_scan_req->owner_nlportid == notify->portid) {
15765                                 sched_scan_req->nl_owner_dead = true;
15766                                 schedule_work(&rdev->sched_scan_stop_wk);
15767                         }
15768                 }
15769
15770                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15771                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
15772
15773                         if (wdev->owner_nlportid == notify->portid) {
15774                                 wdev->nl_owner_dead = true;
15775                                 schedule_work(&rdev->destroy_work);
15776                         } else if (wdev->conn_owner_nlportid == notify->portid) {
15777                                 schedule_work(&wdev->disconnect_wk);
15778                         }
15779                 }
15780
15781                 spin_lock_bh(&rdev->beacon_registrations_lock);
15782                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15783                                          list) {
15784                         if (reg->nlportid == notify->portid) {
15785                                 list_del(&reg->list);
15786                                 kfree(reg);
15787                                 break;
15788                         }
15789                 }
15790                 spin_unlock_bh(&rdev->beacon_registrations_lock);
15791         }
15792
15793         rcu_read_unlock();
15794
15795         /*
15796          * It is possible that the user space process that is controlling the
15797          * indoor setting disappeared, so notify the regulatory core.
15798          */
15799         regulatory_netlink_notify(notify->portid);
15800         return NOTIFY_OK;
15801 }
15802
15803 static struct notifier_block nl80211_netlink_notifier = {
15804         .notifier_call = nl80211_netlink_notify,
15805 };
15806
15807 void cfg80211_ft_event(struct net_device *netdev,
15808                        struct cfg80211_ft_event_params *ft_event)
15809 {
15810         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15811         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15812         struct sk_buff *msg;
15813         void *hdr;
15814
15815         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15816
15817         if (!ft_event->target_ap)
15818                 return;
15819
15820         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
15821                         GFP_KERNEL);
15822         if (!msg)
15823                 return;
15824
15825         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15826         if (!hdr)
15827                 goto out;
15828
15829         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15830             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15831             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15832                 goto out;
15833
15834         if (ft_event->ies &&
15835             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15836                 goto out;
15837         if (ft_event->ric_ies &&
15838             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15839                     ft_event->ric_ies))
15840                 goto out;
15841
15842         genlmsg_end(msg, hdr);
15843
15844         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15845                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15846         return;
15847  out:
15848         nlmsg_free(msg);
15849 }
15850 EXPORT_SYMBOL(cfg80211_ft_event);
15851
15852 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15853 {
15854         struct cfg80211_registered_device *rdev;
15855         struct sk_buff *msg;
15856         void *hdr;
15857         u32 nlportid;
15858
15859         rdev = wiphy_to_rdev(wdev->wiphy);
15860         if (!rdev->crit_proto_nlportid)
15861                 return;
15862
15863         nlportid = rdev->crit_proto_nlportid;
15864         rdev->crit_proto_nlportid = 0;
15865
15866         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15867         if (!msg)
15868                 return;
15869
15870         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15871         if (!hdr)
15872                 goto nla_put_failure;
15873
15874         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15875             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15876                               NL80211_ATTR_PAD))
15877                 goto nla_put_failure;
15878
15879         genlmsg_end(msg, hdr);
15880
15881         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15882         return;
15883
15884  nla_put_failure:
15885         nlmsg_free(msg);
15886 }
15887 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15888
15889 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15890 {
15891         struct wiphy *wiphy = wdev->wiphy;
15892         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15893         struct sk_buff *msg;
15894         void *hdr;
15895
15896         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15897         if (!msg)
15898                 return;
15899
15900         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15901         if (!hdr)
15902                 goto out;
15903
15904         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15905             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15906             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15907                               NL80211_ATTR_PAD))
15908                 goto out;
15909
15910         genlmsg_end(msg, hdr);
15911
15912         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15913                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15914         return;
15915  out:
15916         nlmsg_free(msg);
15917 }
15918
15919 int cfg80211_external_auth_request(struct net_device *dev,
15920                                    struct cfg80211_external_auth_params *params,
15921                                    gfp_t gfp)
15922 {
15923         struct wireless_dev *wdev = dev->ieee80211_ptr;
15924         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15925         struct sk_buff *msg;
15926         void *hdr;
15927
15928         if (!wdev->conn_owner_nlportid)
15929                 return -EINVAL;
15930
15931         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15932         if (!msg)
15933                 return -ENOMEM;
15934
15935         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
15936         if (!hdr)
15937                 goto nla_put_failure;
15938
15939         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15940             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15941             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
15942             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
15943                         params->action) ||
15944             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
15945             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
15946                     params->ssid.ssid))
15947                 goto nla_put_failure;
15948
15949         genlmsg_end(msg, hdr);
15950         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
15951                         wdev->conn_owner_nlportid);
15952         return 0;
15953
15954  nla_put_failure:
15955         nlmsg_free(msg);
15956         return -ENOBUFS;
15957 }
15958 EXPORT_SYMBOL(cfg80211_external_auth_request);
15959
15960 /* initialisation/exit functions */
15961
15962 int __init nl80211_init(void)
15963 {
15964         int err;
15965
15966         err = genl_register_family(&nl80211_fam);
15967         if (err)
15968                 return err;
15969
15970         err = netlink_register_notifier(&nl80211_netlink_notifier);
15971         if (err)
15972                 goto err_out;
15973
15974         return 0;
15975  err_out:
15976         genl_unregister_family(&nl80211_fam);
15977         return err;
15978 }
15979
15980 void nl80211_exit(void)
15981 {
15982         netlink_unregister_notifier(&nl80211_netlink_notifier);
15983         genl_unregister_family(&nl80211_fam);
15984 }