1/* 2 * This is the new netlink-based wireless configuration interface. 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2014 Intel Mobile Communications GmbH 6 */ 7 8#include <linux/if.h> 9#include <linux/module.h> 10#include <linux/err.h> 11#include <linux/slab.h> 12#include <linux/list.h> 13#include <linux/if_ether.h> 14#include <linux/ieee80211.h> 15#include <linux/nl80211.h> 16#include <linux/rtnetlink.h> 17#include <linux/netlink.h> 18#include <linux/etherdevice.h> 19#include <net/net_namespace.h> 20#include <net/genetlink.h> 21#include <net/cfg80211.h> 22#include <net/sock.h> 23#include <net/inet_connection_sock.h> 24#include "core.h" 25#include "nl80211.h" 26#include "reg.h" 27#include "rdev-ops.h" 28 29static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 30 struct genl_info *info, 31 struct cfg80211_crypto_settings *settings, 32 int cipher_limit); 33 34static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 35 struct genl_info *info); 36static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 37 struct genl_info *info); 38 39/* the netlink family */ 40static struct genl_family nl80211_fam = { 41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 42 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 43 .hdrsize = 0, /* no private header */ 44 .version = 1, /* no particular meaning now */ 45 .maxattr = NL80211_ATTR_MAX, 46 .netnsok = true, 47 .pre_doit = nl80211_pre_doit, 48 .post_doit = nl80211_post_doit, 49}; 50 51/* multicast groups */ 52enum nl80211_multicast_groups { 53 NL80211_MCGRP_CONFIG, 54 NL80211_MCGRP_SCAN, 55 NL80211_MCGRP_REGULATORY, 56 NL80211_MCGRP_MLME, 57 NL80211_MCGRP_VENDOR, 58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 59}; 60 61static const struct genl_multicast_group nl80211_mcgrps[] = { 62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 67#ifdef CONFIG_NL80211_TESTMODE 68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 69#endif 70}; 71 72/* returns ERR_PTR values */ 73static struct wireless_dev * 74__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 75{ 76 struct cfg80211_registered_device *rdev; 77 struct wireless_dev *result = NULL; 78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 80 u64 wdev_id; 81 int wiphy_idx = -1; 82 int ifidx = -1; 83 84 ASSERT_RTNL(); 85 86 if (!have_ifidx && !have_wdev_id) 87 return ERR_PTR(-EINVAL); 88 89 if (have_ifidx) 90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 91 if (have_wdev_id) { 92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 93 wiphy_idx = wdev_id >> 32; 94 } 95 96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 97 struct wireless_dev *wdev; 98 99 if (wiphy_net(&rdev->wiphy) != netns) 100 continue; 101 102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 103 continue; 104 105 list_for_each_entry(wdev, &rdev->wdev_list, list) { 106 if (have_ifidx && wdev->netdev && 107 wdev->netdev->ifindex == ifidx) { 108 result = wdev; 109 break; 110 } 111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 112 result = wdev; 113 break; 114 } 115 } 116 117 if (result) 118 break; 119 } 120 121 if (result) 122 return result; 123 return ERR_PTR(-ENODEV); 124} 125 126static struct cfg80211_registered_device * 127__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 128{ 129 struct cfg80211_registered_device *rdev = NULL, *tmp; 130 struct net_device *netdev; 131 132 ASSERT_RTNL(); 133 134 if (!attrs[NL80211_ATTR_WIPHY] && 135 !attrs[NL80211_ATTR_IFINDEX] && 136 !attrs[NL80211_ATTR_WDEV]) 137 return ERR_PTR(-EINVAL); 138 139 if (attrs[NL80211_ATTR_WIPHY]) 140 rdev = cfg80211_rdev_by_wiphy_idx( 141 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 142 143 if (attrs[NL80211_ATTR_WDEV]) { 144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 145 struct wireless_dev *wdev; 146 bool found = false; 147 148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 149 if (tmp) { 150 /* make sure wdev exists */ 151 list_for_each_entry(wdev, &tmp->wdev_list, list) { 152 if (wdev->identifier != (u32)wdev_id) 153 continue; 154 found = true; 155 break; 156 } 157 158 if (!found) 159 tmp = NULL; 160 161 if (rdev && tmp != rdev) 162 return ERR_PTR(-EINVAL); 163 rdev = tmp; 164 } 165 } 166 167 if (attrs[NL80211_ATTR_IFINDEX]) { 168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 169 netdev = __dev_get_by_index(netns, ifindex); 170 if (netdev) { 171 if (netdev->ieee80211_ptr) 172 tmp = wiphy_to_rdev( 173 netdev->ieee80211_ptr->wiphy); 174 else 175 tmp = NULL; 176 177 /* not wireless device -- return error */ 178 if (!tmp) 179 return ERR_PTR(-EINVAL); 180 181 /* mismatch -- return error */ 182 if (rdev && tmp != rdev) 183 return ERR_PTR(-EINVAL); 184 185 rdev = tmp; 186 } 187 } 188 189 if (!rdev) 190 return ERR_PTR(-ENODEV); 191 192 if (netns != wiphy_net(&rdev->wiphy)) 193 return ERR_PTR(-ENODEV); 194 195 return rdev; 196} 197 198/* 199 * This function returns a pointer to the driver 200 * that the genl_info item that is passed refers to. 201 * 202 * The result of this can be a PTR_ERR and hence must 203 * be checked with IS_ERR() for errors. 204 */ 205static struct cfg80211_registered_device * 206cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 207{ 208 return __cfg80211_rdev_from_attrs(netns, info->attrs); 209} 210 211/* policy for the attributes */ 212static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 215 .len = 20-1 }, 216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 217 218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 223 224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 230 231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 234 235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 237 238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 240 .len = WLAN_MAX_KEY_LEN }, 241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 246 247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 250 .len = IEEE80211_MAX_DATA_LEN }, 251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 252 .len = IEEE80211_MAX_DATA_LEN }, 253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 257 .len = NL80211_MAX_SUPP_RATES }, 258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 262 .len = IEEE80211_MAX_MESH_ID_LEN }, 263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 264 265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 267 268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 272 .len = NL80211_MAX_SUPP_RATES }, 273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 274 275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 277 278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 279 280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 281 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 282 .len = IEEE80211_MAX_DATA_LEN }, 283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 285 286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 287 .len = IEEE80211_MAX_SSID_LEN }, 288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 293 [NL80211_ATTR_STA_FLAGS2] = { 294 .len = sizeof(struct nl80211_sta_flag_update), 295 }, 296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 302 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 305 .len = WLAN_PMKID_LEN }, 306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 310 .len = IEEE80211_MAX_DATA_LEN }, 311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 331 .len = IEEE80211_MAX_DATA_LEN }, 332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 333 .len = IEEE80211_MAX_DATA_LEN }, 334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 345 .len = IEEE80211_MAX_DATA_LEN }, 346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 348 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 349 .len = NL80211_HT_CAPABILITY_LEN 350 }, 351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 368 .len = NL80211_VHT_CAPABILITY_LEN, 369 }, 370 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 372 .len = IEEE80211_MAX_DATA_LEN }, 373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 387 .len = IEEE80211_QOS_MAP_LEN_MAX }, 388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 394 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 400 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 401 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 402 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 403}; 404 405/* policy for the key attributes */ 406static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 407 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 408 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 409 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 410 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 411 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 412 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 413 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 414 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 415}; 416 417/* policy for the key default flags */ 418static const struct nla_policy 419nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 420 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 421 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 422}; 423 424/* policy for WoWLAN attributes */ 425static const struct nla_policy 426nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 427 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 428 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 429 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 430 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 431 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 432 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 433 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 434 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 435 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 436 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 437}; 438 439static const struct nla_policy 440nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 441 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 442 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 443 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 444 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 445 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 448 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 449 }, 450 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 451 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 452 }, 453 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 454 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 455 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 456}; 457 458/* policy for coalesce rule attributes */ 459static const struct nla_policy 460nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 461 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 462 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 463 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 464}; 465 466/* policy for GTK rekey offload attributes */ 467static const struct nla_policy 468nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 469 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 470 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 471 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 472}; 473 474static const struct nla_policy 475nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 476 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 477 .len = IEEE80211_MAX_SSID_LEN }, 478 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 479}; 480 481static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 482 struct netlink_callback *cb, 483 struct cfg80211_registered_device **rdev, 484 struct wireless_dev **wdev) 485{ 486 int err; 487 488 rtnl_lock(); 489 490 if (!cb->args[0]) { 491 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 492 nl80211_fam.attrbuf, nl80211_fam.maxattr, 493 nl80211_policy); 494 if (err) 495 goto out_unlock; 496 497 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 498 nl80211_fam.attrbuf); 499 if (IS_ERR(*wdev)) { 500 err = PTR_ERR(*wdev); 501 goto out_unlock; 502 } 503 *rdev = wiphy_to_rdev((*wdev)->wiphy); 504 /* 0 is the first index - add 1 to parse only once */ 505 cb->args[0] = (*rdev)->wiphy_idx + 1; 506 cb->args[1] = (*wdev)->identifier; 507 } else { 508 /* subtract the 1 again here */ 509 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 510 struct wireless_dev *tmp; 511 512 if (!wiphy) { 513 err = -ENODEV; 514 goto out_unlock; 515 } 516 *rdev = wiphy_to_rdev(wiphy); 517 *wdev = NULL; 518 519 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 520 if (tmp->identifier == cb->args[1]) { 521 *wdev = tmp; 522 break; 523 } 524 } 525 526 if (!*wdev) { 527 err = -ENODEV; 528 goto out_unlock; 529 } 530 } 531 532 return 0; 533 out_unlock: 534 rtnl_unlock(); 535 return err; 536} 537 538static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 539{ 540 rtnl_unlock(); 541} 542 543/* IE validation */ 544static bool is_valid_ie_attr(const struct nlattr *attr) 545{ 546 const u8 *pos; 547 int len; 548 549 if (!attr) 550 return true; 551 552 pos = nla_data(attr); 553 len = nla_len(attr); 554 555 while (len) { 556 u8 elemlen; 557 558 if (len < 2) 559 return false; 560 len -= 2; 561 562 elemlen = pos[1]; 563 if (elemlen > len) 564 return false; 565 566 len -= elemlen; 567 pos += 2 + elemlen; 568 } 569 570 return true; 571} 572 573/* message building helper */ 574static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 575 int flags, u8 cmd) 576{ 577 /* since there is no private header just add the generic one */ 578 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 579} 580 581static int nl80211_msg_put_channel(struct sk_buff *msg, 582 struct ieee80211_channel *chan, 583 bool large) 584{ 585 /* Some channels must be completely excluded from the 586 * list to protect old user-space tools from breaking 587 */ 588 if (!large && chan->flags & 589 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 590 return 0; 591 592 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 593 chan->center_freq)) 594 goto nla_put_failure; 595 596 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 597 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 598 goto nla_put_failure; 599 if (chan->flags & IEEE80211_CHAN_NO_IR) { 600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 601 goto nla_put_failure; 602 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 603 goto nla_put_failure; 604 } 605 if (chan->flags & IEEE80211_CHAN_RADAR) { 606 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 607 goto nla_put_failure; 608 if (large) { 609 u32 time; 610 611 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 612 613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 614 chan->dfs_state)) 615 goto nla_put_failure; 616 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 617 time)) 618 goto nla_put_failure; 619 if (nla_put_u32(msg, 620 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 621 chan->dfs_cac_ms)) 622 goto nla_put_failure; 623 } 624 } 625 626 if (large) { 627 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 629 goto nla_put_failure; 630 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 632 goto nla_put_failure; 633 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 635 goto nla_put_failure; 636 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 638 goto nla_put_failure; 639 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 641 goto nla_put_failure; 642 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) && 643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT)) 644 goto nla_put_failure; 645 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 646 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 647 goto nla_put_failure; 648 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 649 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 650 goto nla_put_failure; 651 } 652 653 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 654 DBM_TO_MBM(chan->max_power))) 655 goto nla_put_failure; 656 657 return 0; 658 659 nla_put_failure: 660 return -ENOBUFS; 661} 662 663/* netlink command implementations */ 664 665struct key_parse { 666 struct key_params p; 667 int idx; 668 int type; 669 bool def, defmgmt; 670 bool def_uni, def_multi; 671}; 672 673static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 674{ 675 struct nlattr *tb[NL80211_KEY_MAX + 1]; 676 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 677 nl80211_key_policy); 678 if (err) 679 return err; 680 681 k->def = !!tb[NL80211_KEY_DEFAULT]; 682 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 683 684 if (k->def) { 685 k->def_uni = true; 686 k->def_multi = true; 687 } 688 if (k->defmgmt) 689 k->def_multi = true; 690 691 if (tb[NL80211_KEY_IDX]) 692 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 693 694 if (tb[NL80211_KEY_DATA]) { 695 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 696 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 697 } 698 699 if (tb[NL80211_KEY_SEQ]) { 700 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 701 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 702 } 703 704 if (tb[NL80211_KEY_CIPHER]) 705 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 706 707 if (tb[NL80211_KEY_TYPE]) { 708 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 709 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 710 return -EINVAL; 711 } 712 713 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 714 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 715 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 716 tb[NL80211_KEY_DEFAULT_TYPES], 717 nl80211_key_default_policy); 718 if (err) 719 return err; 720 721 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 722 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 723 } 724 725 return 0; 726} 727 728static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 729{ 730 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 731 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 732 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 733 } 734 735 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 736 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 737 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 738 } 739 740 if (info->attrs[NL80211_ATTR_KEY_IDX]) 741 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 742 743 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 744 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 745 746 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 747 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 748 749 if (k->def) { 750 k->def_uni = true; 751 k->def_multi = true; 752 } 753 if (k->defmgmt) 754 k->def_multi = true; 755 756 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 757 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 758 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 759 return -EINVAL; 760 } 761 762 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 763 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 764 int err = nla_parse_nested( 765 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 766 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 767 nl80211_key_default_policy); 768 if (err) 769 return err; 770 771 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 772 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 773 } 774 775 return 0; 776} 777 778static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 779{ 780 int err; 781 782 memset(k, 0, sizeof(*k)); 783 k->idx = -1; 784 k->type = -1; 785 786 if (info->attrs[NL80211_ATTR_KEY]) 787 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 788 else 789 err = nl80211_parse_key_old(info, k); 790 791 if (err) 792 return err; 793 794 if (k->def && k->defmgmt) 795 return -EINVAL; 796 797 if (k->defmgmt) { 798 if (k->def_uni || !k->def_multi) 799 return -EINVAL; 800 } 801 802 if (k->idx != -1) { 803 if (k->defmgmt) { 804 if (k->idx < 4 || k->idx > 5) 805 return -EINVAL; 806 } else if (k->def) { 807 if (k->idx < 0 || k->idx > 3) 808 return -EINVAL; 809 } else { 810 if (k->idx < 0 || k->idx > 5) 811 return -EINVAL; 812 } 813 } 814 815 return 0; 816} 817 818static struct cfg80211_cached_keys * 819nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 820 struct nlattr *keys, bool *no_ht) 821{ 822 struct key_parse parse; 823 struct nlattr *key; 824 struct cfg80211_cached_keys *result; 825 int rem, err, def = 0; 826 827 result = kzalloc(sizeof(*result), GFP_KERNEL); 828 if (!result) 829 return ERR_PTR(-ENOMEM); 830 831 result->def = -1; 832 result->defmgmt = -1; 833 834 nla_for_each_nested(key, keys, rem) { 835 memset(&parse, 0, sizeof(parse)); 836 parse.idx = -1; 837 838 err = nl80211_parse_key_new(key, &parse); 839 if (err) 840 goto error; 841 err = -EINVAL; 842 if (!parse.p.key) 843 goto error; 844 if (parse.idx < 0 || parse.idx > 4) 845 goto error; 846 if (parse.def) { 847 if (def) 848 goto error; 849 def = 1; 850 result->def = parse.idx; 851 if (!parse.def_uni || !parse.def_multi) 852 goto error; 853 } else if (parse.defmgmt) 854 goto error; 855 err = cfg80211_validate_key_settings(rdev, &parse.p, 856 parse.idx, false, NULL); 857 if (err) 858 goto error; 859 result->params[parse.idx].cipher = parse.p.cipher; 860 result->params[parse.idx].key_len = parse.p.key_len; 861 result->params[parse.idx].key = result->data[parse.idx]; 862 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 863 864 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 865 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 866 if (no_ht) 867 *no_ht = true; 868 } 869 } 870 871 return result; 872 error: 873 kfree(result); 874 return ERR_PTR(err); 875} 876 877static int nl80211_key_allowed(struct wireless_dev *wdev) 878{ 879 ASSERT_WDEV_LOCK(wdev); 880 881 switch (wdev->iftype) { 882 case NL80211_IFTYPE_AP: 883 case NL80211_IFTYPE_AP_VLAN: 884 case NL80211_IFTYPE_P2P_GO: 885 case NL80211_IFTYPE_MESH_POINT: 886 break; 887 case NL80211_IFTYPE_ADHOC: 888 case NL80211_IFTYPE_STATION: 889 case NL80211_IFTYPE_P2P_CLIENT: 890 if (!wdev->current_bss) 891 return -ENOLINK; 892 break; 893 case NL80211_IFTYPE_UNSPECIFIED: 894 case NL80211_IFTYPE_OCB: 895 case NL80211_IFTYPE_MONITOR: 896 case NL80211_IFTYPE_P2P_DEVICE: 897 case NL80211_IFTYPE_WDS: 898 case NUM_NL80211_IFTYPES: 899 return -EINVAL; 900 } 901 902 return 0; 903} 904 905static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 906 struct nlattr *tb) 907{ 908 struct ieee80211_channel *chan; 909 910 if (tb == NULL) 911 return NULL; 912 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 913 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 914 return NULL; 915 return chan; 916} 917 918static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 919{ 920 struct nlattr *nl_modes = nla_nest_start(msg, attr); 921 int i; 922 923 if (!nl_modes) 924 goto nla_put_failure; 925 926 i = 0; 927 while (ifmodes) { 928 if ((ifmodes & 1) && nla_put_flag(msg, i)) 929 goto nla_put_failure; 930 ifmodes >>= 1; 931 i++; 932 } 933 934 nla_nest_end(msg, nl_modes); 935 return 0; 936 937nla_put_failure: 938 return -ENOBUFS; 939} 940 941static int nl80211_put_iface_combinations(struct wiphy *wiphy, 942 struct sk_buff *msg, 943 bool large) 944{ 945 struct nlattr *nl_combis; 946 int i, j; 947 948 nl_combis = nla_nest_start(msg, 949 NL80211_ATTR_INTERFACE_COMBINATIONS); 950 if (!nl_combis) 951 goto nla_put_failure; 952 953 for (i = 0; i < wiphy->n_iface_combinations; i++) { 954 const struct ieee80211_iface_combination *c; 955 struct nlattr *nl_combi, *nl_limits; 956 957 c = &wiphy->iface_combinations[i]; 958 959 nl_combi = nla_nest_start(msg, i + 1); 960 if (!nl_combi) 961 goto nla_put_failure; 962 963 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 964 if (!nl_limits) 965 goto nla_put_failure; 966 967 for (j = 0; j < c->n_limits; j++) { 968 struct nlattr *nl_limit; 969 970 nl_limit = nla_nest_start(msg, j + 1); 971 if (!nl_limit) 972 goto nla_put_failure; 973 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 974 c->limits[j].max)) 975 goto nla_put_failure; 976 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 977 c->limits[j].types)) 978 goto nla_put_failure; 979 nla_nest_end(msg, nl_limit); 980 } 981 982 nla_nest_end(msg, nl_limits); 983 984 if (c->beacon_int_infra_match && 985 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 986 goto nla_put_failure; 987 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 988 c->num_different_channels) || 989 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 990 c->max_interfaces)) 991 goto nla_put_failure; 992 if (large && 993 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 994 c->radar_detect_widths) || 995 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 996 c->radar_detect_regions))) 997 goto nla_put_failure; 998 999 nla_nest_end(msg, nl_combi); 1000 } 1001 1002 nla_nest_end(msg, nl_combis); 1003 1004 return 0; 1005nla_put_failure: 1006 return -ENOBUFS; 1007} 1008 1009#ifdef CONFIG_PM 1010static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1011 struct sk_buff *msg) 1012{ 1013 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1014 struct nlattr *nl_tcp; 1015 1016 if (!tcp) 1017 return 0; 1018 1019 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1020 if (!nl_tcp) 1021 return -ENOBUFS; 1022 1023 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1024 tcp->data_payload_max)) 1025 return -ENOBUFS; 1026 1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1028 tcp->data_payload_max)) 1029 return -ENOBUFS; 1030 1031 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1032 return -ENOBUFS; 1033 1034 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1035 sizeof(*tcp->tok), tcp->tok)) 1036 return -ENOBUFS; 1037 1038 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1039 tcp->data_interval_max)) 1040 return -ENOBUFS; 1041 1042 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1043 tcp->wake_payload_max)) 1044 return -ENOBUFS; 1045 1046 nla_nest_end(msg, nl_tcp); 1047 return 0; 1048} 1049 1050static int nl80211_send_wowlan(struct sk_buff *msg, 1051 struct cfg80211_registered_device *rdev, 1052 bool large) 1053{ 1054 struct nlattr *nl_wowlan; 1055 1056 if (!rdev->wiphy.wowlan) 1057 return 0; 1058 1059 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1060 if (!nl_wowlan) 1061 return -ENOBUFS; 1062 1063 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1064 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1065 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1067 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1069 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1070 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1071 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1075 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1076 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1077 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1079 return -ENOBUFS; 1080 1081 if (rdev->wiphy.wowlan->n_patterns) { 1082 struct nl80211_pattern_support pat = { 1083 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1084 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1085 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1086 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1087 }; 1088 1089 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1090 sizeof(pat), &pat)) 1091 return -ENOBUFS; 1092 } 1093 1094 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1095 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1096 rdev->wiphy.wowlan->max_nd_match_sets)) 1097 return -ENOBUFS; 1098 1099 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1100 return -ENOBUFS; 1101 1102 nla_nest_end(msg, nl_wowlan); 1103 1104 return 0; 1105} 1106#endif 1107 1108static int nl80211_send_coalesce(struct sk_buff *msg, 1109 struct cfg80211_registered_device *rdev) 1110{ 1111 struct nl80211_coalesce_rule_support rule; 1112 1113 if (!rdev->wiphy.coalesce) 1114 return 0; 1115 1116 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1117 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1118 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1119 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1120 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1121 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1122 1123 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1124 return -ENOBUFS; 1125 1126 return 0; 1127} 1128 1129static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1130 struct ieee80211_supported_band *sband) 1131{ 1132 struct nlattr *nl_rates, *nl_rate; 1133 struct ieee80211_rate *rate; 1134 int i; 1135 1136 /* add HT info */ 1137 if (sband->ht_cap.ht_supported && 1138 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1139 sizeof(sband->ht_cap.mcs), 1140 &sband->ht_cap.mcs) || 1141 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1142 sband->ht_cap.cap) || 1143 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1144 sband->ht_cap.ampdu_factor) || 1145 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1146 sband->ht_cap.ampdu_density))) 1147 return -ENOBUFS; 1148 1149 /* add VHT info */ 1150 if (sband->vht_cap.vht_supported && 1151 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1152 sizeof(sband->vht_cap.vht_mcs), 1153 &sband->vht_cap.vht_mcs) || 1154 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1155 sband->vht_cap.cap))) 1156 return -ENOBUFS; 1157 1158 /* add bitrates */ 1159 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1160 if (!nl_rates) 1161 return -ENOBUFS; 1162 1163 for (i = 0; i < sband->n_bitrates; i++) { 1164 nl_rate = nla_nest_start(msg, i); 1165 if (!nl_rate) 1166 return -ENOBUFS; 1167 1168 rate = &sband->bitrates[i]; 1169 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1170 rate->bitrate)) 1171 return -ENOBUFS; 1172 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1173 nla_put_flag(msg, 1174 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1175 return -ENOBUFS; 1176 1177 nla_nest_end(msg, nl_rate); 1178 } 1179 1180 nla_nest_end(msg, nl_rates); 1181 1182 return 0; 1183} 1184 1185static int 1186nl80211_send_mgmt_stypes(struct sk_buff *msg, 1187 const struct ieee80211_txrx_stypes *mgmt_stypes) 1188{ 1189 u16 stypes; 1190 struct nlattr *nl_ftypes, *nl_ifs; 1191 enum nl80211_iftype ift; 1192 int i; 1193 1194 if (!mgmt_stypes) 1195 return 0; 1196 1197 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1198 if (!nl_ifs) 1199 return -ENOBUFS; 1200 1201 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1202 nl_ftypes = nla_nest_start(msg, ift); 1203 if (!nl_ftypes) 1204 return -ENOBUFS; 1205 i = 0; 1206 stypes = mgmt_stypes[ift].tx; 1207 while (stypes) { 1208 if ((stypes & 1) && 1209 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1210 (i << 4) | IEEE80211_FTYPE_MGMT)) 1211 return -ENOBUFS; 1212 stypes >>= 1; 1213 i++; 1214 } 1215 nla_nest_end(msg, nl_ftypes); 1216 } 1217 1218 nla_nest_end(msg, nl_ifs); 1219 1220 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1221 if (!nl_ifs) 1222 return -ENOBUFS; 1223 1224 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1225 nl_ftypes = nla_nest_start(msg, ift); 1226 if (!nl_ftypes) 1227 return -ENOBUFS; 1228 i = 0; 1229 stypes = mgmt_stypes[ift].rx; 1230 while (stypes) { 1231 if ((stypes & 1) && 1232 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1233 (i << 4) | IEEE80211_FTYPE_MGMT)) 1234 return -ENOBUFS; 1235 stypes >>= 1; 1236 i++; 1237 } 1238 nla_nest_end(msg, nl_ftypes); 1239 } 1240 nla_nest_end(msg, nl_ifs); 1241 1242 return 0; 1243} 1244 1245struct nl80211_dump_wiphy_state { 1246 s64 filter_wiphy; 1247 long start; 1248 long split_start, band_start, chan_start; 1249 bool split; 1250}; 1251 1252static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1253 enum nl80211_commands cmd, 1254 struct sk_buff *msg, u32 portid, u32 seq, 1255 int flags, struct nl80211_dump_wiphy_state *state) 1256{ 1257 void *hdr; 1258 struct nlattr *nl_bands, *nl_band; 1259 struct nlattr *nl_freqs, *nl_freq; 1260 struct nlattr *nl_cmds; 1261 enum ieee80211_band band; 1262 struct ieee80211_channel *chan; 1263 int i; 1264 const struct ieee80211_txrx_stypes *mgmt_stypes = 1265 rdev->wiphy.mgmt_stypes; 1266 u32 features; 1267 1268 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1269 if (!hdr) 1270 return -ENOBUFS; 1271 1272 if (WARN_ON(!state)) 1273 return -EINVAL; 1274 1275 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1276 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1277 wiphy_name(&rdev->wiphy)) || 1278 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1279 cfg80211_rdev_list_generation)) 1280 goto nla_put_failure; 1281 1282 if (cmd != NL80211_CMD_NEW_WIPHY) 1283 goto finish; 1284 1285 switch (state->split_start) { 1286 case 0: 1287 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1288 rdev->wiphy.retry_short) || 1289 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1290 rdev->wiphy.retry_long) || 1291 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1292 rdev->wiphy.frag_threshold) || 1293 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1294 rdev->wiphy.rts_threshold) || 1295 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1296 rdev->wiphy.coverage_class) || 1297 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1298 rdev->wiphy.max_scan_ssids) || 1299 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1300 rdev->wiphy.max_sched_scan_ssids) || 1301 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1302 rdev->wiphy.max_scan_ie_len) || 1303 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1304 rdev->wiphy.max_sched_scan_ie_len) || 1305 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1306 rdev->wiphy.max_match_sets)) 1307 goto nla_put_failure; 1308 1309 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1310 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1311 goto nla_put_failure; 1312 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1313 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1314 goto nla_put_failure; 1315 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1316 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1317 goto nla_put_failure; 1318 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1319 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1320 goto nla_put_failure; 1321 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1322 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1323 goto nla_put_failure; 1324 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1325 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1326 goto nla_put_failure; 1327 state->split_start++; 1328 if (state->split) 1329 break; 1330 case 1: 1331 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1332 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1333 rdev->wiphy.cipher_suites)) 1334 goto nla_put_failure; 1335 1336 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1337 rdev->wiphy.max_num_pmkids)) 1338 goto nla_put_failure; 1339 1340 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1341 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1342 goto nla_put_failure; 1343 1344 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1345 rdev->wiphy.available_antennas_tx) || 1346 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1347 rdev->wiphy.available_antennas_rx)) 1348 goto nla_put_failure; 1349 1350 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1351 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1352 rdev->wiphy.probe_resp_offload)) 1353 goto nla_put_failure; 1354 1355 if ((rdev->wiphy.available_antennas_tx || 1356 rdev->wiphy.available_antennas_rx) && 1357 rdev->ops->get_antenna) { 1358 u32 tx_ant = 0, rx_ant = 0; 1359 int res; 1360 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1361 if (!res) { 1362 if (nla_put_u32(msg, 1363 NL80211_ATTR_WIPHY_ANTENNA_TX, 1364 tx_ant) || 1365 nla_put_u32(msg, 1366 NL80211_ATTR_WIPHY_ANTENNA_RX, 1367 rx_ant)) 1368 goto nla_put_failure; 1369 } 1370 } 1371 1372 state->split_start++; 1373 if (state->split) 1374 break; 1375 case 2: 1376 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1377 rdev->wiphy.interface_modes)) 1378 goto nla_put_failure; 1379 state->split_start++; 1380 if (state->split) 1381 break; 1382 case 3: 1383 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1384 if (!nl_bands) 1385 goto nla_put_failure; 1386 1387 for (band = state->band_start; 1388 band < IEEE80211_NUM_BANDS; band++) { 1389 struct ieee80211_supported_band *sband; 1390 1391 sband = rdev->wiphy.bands[band]; 1392 1393 if (!sband) 1394 continue; 1395 1396 nl_band = nla_nest_start(msg, band); 1397 if (!nl_band) 1398 goto nla_put_failure; 1399 1400 switch (state->chan_start) { 1401 case 0: 1402 if (nl80211_send_band_rateinfo(msg, sband)) 1403 goto nla_put_failure; 1404 state->chan_start++; 1405 if (state->split) 1406 break; 1407 default: 1408 /* add frequencies */ 1409 nl_freqs = nla_nest_start( 1410 msg, NL80211_BAND_ATTR_FREQS); 1411 if (!nl_freqs) 1412 goto nla_put_failure; 1413 1414 for (i = state->chan_start - 1; 1415 i < sband->n_channels; 1416 i++) { 1417 nl_freq = nla_nest_start(msg, i); 1418 if (!nl_freq) 1419 goto nla_put_failure; 1420 1421 chan = &sband->channels[i]; 1422 1423 if (nl80211_msg_put_channel( 1424 msg, chan, 1425 state->split)) 1426 goto nla_put_failure; 1427 1428 nla_nest_end(msg, nl_freq); 1429 if (state->split) 1430 break; 1431 } 1432 if (i < sband->n_channels) 1433 state->chan_start = i + 2; 1434 else 1435 state->chan_start = 0; 1436 nla_nest_end(msg, nl_freqs); 1437 } 1438 1439 nla_nest_end(msg, nl_band); 1440 1441 if (state->split) { 1442 /* start again here */ 1443 if (state->chan_start) 1444 band--; 1445 break; 1446 } 1447 } 1448 nla_nest_end(msg, nl_bands); 1449 1450 if (band < IEEE80211_NUM_BANDS) 1451 state->band_start = band + 1; 1452 else 1453 state->band_start = 0; 1454 1455 /* if bands & channels are done, continue outside */ 1456 if (state->band_start == 0 && state->chan_start == 0) 1457 state->split_start++; 1458 if (state->split) 1459 break; 1460 case 4: 1461 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1462 if (!nl_cmds) 1463 goto nla_put_failure; 1464 1465 i = 0; 1466#define CMD(op, n) \ 1467 do { \ 1468 if (rdev->ops->op) { \ 1469 i++; \ 1470 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1471 goto nla_put_failure; \ 1472 } \ 1473 } while (0) 1474 1475 CMD(add_virtual_intf, NEW_INTERFACE); 1476 CMD(change_virtual_intf, SET_INTERFACE); 1477 CMD(add_key, NEW_KEY); 1478 CMD(start_ap, START_AP); 1479 CMD(add_station, NEW_STATION); 1480 CMD(add_mpath, NEW_MPATH); 1481 CMD(update_mesh_config, SET_MESH_CONFIG); 1482 CMD(change_bss, SET_BSS); 1483 CMD(auth, AUTHENTICATE); 1484 CMD(assoc, ASSOCIATE); 1485 CMD(deauth, DEAUTHENTICATE); 1486 CMD(disassoc, DISASSOCIATE); 1487 CMD(join_ibss, JOIN_IBSS); 1488 CMD(join_mesh, JOIN_MESH); 1489 CMD(set_pmksa, SET_PMKSA); 1490 CMD(del_pmksa, DEL_PMKSA); 1491 CMD(flush_pmksa, FLUSH_PMKSA); 1492 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1493 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1494 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1495 CMD(mgmt_tx, FRAME); 1496 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1497 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1498 i++; 1499 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1500 goto nla_put_failure; 1501 } 1502 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1503 rdev->ops->join_mesh) { 1504 i++; 1505 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1506 goto nla_put_failure; 1507 } 1508 CMD(set_wds_peer, SET_WDS_PEER); 1509 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1510 CMD(tdls_mgmt, TDLS_MGMT); 1511 CMD(tdls_oper, TDLS_OPER); 1512 } 1513 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1514 CMD(sched_scan_start, START_SCHED_SCAN); 1515 CMD(probe_client, PROBE_CLIENT); 1516 CMD(set_noack_map, SET_NOACK_MAP); 1517 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1518 i++; 1519 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1520 goto nla_put_failure; 1521 } 1522 CMD(start_p2p_device, START_P2P_DEVICE); 1523 CMD(set_mcast_rate, SET_MCAST_RATE); 1524#ifdef CONFIG_NL80211_TESTMODE 1525 CMD(testmode_cmd, TESTMODE); 1526#endif 1527 if (state->split) { 1528 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1529 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1530 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1531 CMD(channel_switch, CHANNEL_SWITCH); 1532 CMD(set_qos_map, SET_QOS_MAP); 1533 if (rdev->wiphy.features & 1534 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1535 CMD(add_tx_ts, ADD_TX_TS); 1536 } 1537 /* add into the if now */ 1538#undef CMD 1539 1540 if (rdev->ops->connect || rdev->ops->auth) { 1541 i++; 1542 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1543 goto nla_put_failure; 1544 } 1545 1546 if (rdev->ops->disconnect || rdev->ops->deauth) { 1547 i++; 1548 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1549 goto nla_put_failure; 1550 } 1551 1552 nla_nest_end(msg, nl_cmds); 1553 state->split_start++; 1554 if (state->split) 1555 break; 1556 case 5: 1557 if (rdev->ops->remain_on_channel && 1558 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1559 nla_put_u32(msg, 1560 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1561 rdev->wiphy.max_remain_on_channel_duration)) 1562 goto nla_put_failure; 1563 1564 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1565 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1566 goto nla_put_failure; 1567 1568 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1569 goto nla_put_failure; 1570 state->split_start++; 1571 if (state->split) 1572 break; 1573 case 6: 1574#ifdef CONFIG_PM 1575 if (nl80211_send_wowlan(msg, rdev, state->split)) 1576 goto nla_put_failure; 1577 state->split_start++; 1578 if (state->split) 1579 break; 1580#else 1581 state->split_start++; 1582#endif 1583 case 7: 1584 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1585 rdev->wiphy.software_iftypes)) 1586 goto nla_put_failure; 1587 1588 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1589 state->split)) 1590 goto nla_put_failure; 1591 1592 state->split_start++; 1593 if (state->split) 1594 break; 1595 case 8: 1596 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1597 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1598 rdev->wiphy.ap_sme_capa)) 1599 goto nla_put_failure; 1600 1601 features = rdev->wiphy.features; 1602 /* 1603 * We can only add the per-channel limit information if the 1604 * dump is split, otherwise it makes it too big. Therefore 1605 * only advertise it in that case. 1606 */ 1607 if (state->split) 1608 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1609 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1610 goto nla_put_failure; 1611 1612 if (rdev->wiphy.ht_capa_mod_mask && 1613 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1614 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1615 rdev->wiphy.ht_capa_mod_mask)) 1616 goto nla_put_failure; 1617 1618 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1619 rdev->wiphy.max_acl_mac_addrs && 1620 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1621 rdev->wiphy.max_acl_mac_addrs)) 1622 goto nla_put_failure; 1623 1624 /* 1625 * Any information below this point is only available to 1626 * applications that can deal with it being split. This 1627 * helps ensure that newly added capabilities don't break 1628 * older tools by overrunning their buffers. 1629 * 1630 * We still increment split_start so that in the split 1631 * case we'll continue with more data in the next round, 1632 * but break unconditionally so unsplit data stops here. 1633 */ 1634 state->split_start++; 1635 break; 1636 case 9: 1637 if (rdev->wiphy.extended_capabilities && 1638 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1639 rdev->wiphy.extended_capabilities_len, 1640 rdev->wiphy.extended_capabilities) || 1641 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1642 rdev->wiphy.extended_capabilities_len, 1643 rdev->wiphy.extended_capabilities_mask))) 1644 goto nla_put_failure; 1645 1646 if (rdev->wiphy.vht_capa_mod_mask && 1647 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1648 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1649 rdev->wiphy.vht_capa_mod_mask)) 1650 goto nla_put_failure; 1651 1652 state->split_start++; 1653 break; 1654 case 10: 1655 if (nl80211_send_coalesce(msg, rdev)) 1656 goto nla_put_failure; 1657 1658 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1659 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1660 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1661 goto nla_put_failure; 1662 1663 if (rdev->wiphy.max_ap_assoc_sta && 1664 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1665 rdev->wiphy.max_ap_assoc_sta)) 1666 goto nla_put_failure; 1667 1668 state->split_start++; 1669 break; 1670 case 11: 1671 if (rdev->wiphy.n_vendor_commands) { 1672 const struct nl80211_vendor_cmd_info *info; 1673 struct nlattr *nested; 1674 1675 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1676 if (!nested) 1677 goto nla_put_failure; 1678 1679 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1680 info = &rdev->wiphy.vendor_commands[i].info; 1681 if (nla_put(msg, i + 1, sizeof(*info), info)) 1682 goto nla_put_failure; 1683 } 1684 nla_nest_end(msg, nested); 1685 } 1686 1687 if (rdev->wiphy.n_vendor_events) { 1688 const struct nl80211_vendor_cmd_info *info; 1689 struct nlattr *nested; 1690 1691 nested = nla_nest_start(msg, 1692 NL80211_ATTR_VENDOR_EVENTS); 1693 if (!nested) 1694 goto nla_put_failure; 1695 1696 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1697 info = &rdev->wiphy.vendor_events[i]; 1698 if (nla_put(msg, i + 1, sizeof(*info), info)) 1699 goto nla_put_failure; 1700 } 1701 nla_nest_end(msg, nested); 1702 } 1703 state->split_start++; 1704 break; 1705 case 12: 1706 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1707 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1708 rdev->wiphy.max_num_csa_counters)) 1709 goto nla_put_failure; 1710 1711 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1712 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1713 goto nla_put_failure; 1714 1715 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1716 sizeof(rdev->wiphy.ext_features), 1717 rdev->wiphy.ext_features)) 1718 goto nla_put_failure; 1719 1720 /* done */ 1721 state->split_start = 0; 1722 break; 1723 } 1724 finish: 1725 genlmsg_end(msg, hdr); 1726 return 0; 1727 1728 nla_put_failure: 1729 genlmsg_cancel(msg, hdr); 1730 return -EMSGSIZE; 1731} 1732 1733static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1734 struct netlink_callback *cb, 1735 struct nl80211_dump_wiphy_state *state) 1736{ 1737 struct nlattr **tb = nl80211_fam.attrbuf; 1738 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1739 tb, nl80211_fam.maxattr, nl80211_policy); 1740 /* ignore parse errors for backward compatibility */ 1741 if (ret) 1742 return 0; 1743 1744 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1745 if (tb[NL80211_ATTR_WIPHY]) 1746 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1747 if (tb[NL80211_ATTR_WDEV]) 1748 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1749 if (tb[NL80211_ATTR_IFINDEX]) { 1750 struct net_device *netdev; 1751 struct cfg80211_registered_device *rdev; 1752 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1753 1754 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1755 if (!netdev) 1756 return -ENODEV; 1757 if (netdev->ieee80211_ptr) { 1758 rdev = wiphy_to_rdev( 1759 netdev->ieee80211_ptr->wiphy); 1760 state->filter_wiphy = rdev->wiphy_idx; 1761 } 1762 } 1763 1764 return 0; 1765} 1766 1767static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1768{ 1769 int idx = 0, ret; 1770 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1771 struct cfg80211_registered_device *rdev; 1772 1773 rtnl_lock(); 1774 if (!state) { 1775 state = kzalloc(sizeof(*state), GFP_KERNEL); 1776 if (!state) { 1777 rtnl_unlock(); 1778 return -ENOMEM; 1779 } 1780 state->filter_wiphy = -1; 1781 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1782 if (ret) { 1783 kfree(state); 1784 rtnl_unlock(); 1785 return ret; 1786 } 1787 cb->args[0] = (long)state; 1788 } 1789 1790 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1791 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1792 continue; 1793 if (++idx <= state->start) 1794 continue; 1795 if (state->filter_wiphy != -1 && 1796 state->filter_wiphy != rdev->wiphy_idx) 1797 continue; 1798 /* attempt to fit multiple wiphy data chunks into the skb */ 1799 do { 1800 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1801 skb, 1802 NETLINK_CB(cb->skb).portid, 1803 cb->nlh->nlmsg_seq, 1804 NLM_F_MULTI, state); 1805 if (ret < 0) { 1806 /* 1807 * If sending the wiphy data didn't fit (ENOBUFS 1808 * or EMSGSIZE returned), this SKB is still 1809 * empty (so it's not too big because another 1810 * wiphy dataset is already in the skb) and 1811 * we've not tried to adjust the dump allocation 1812 * yet ... then adjust the alloc size to be 1813 * bigger, and return 1 but with the empty skb. 1814 * This results in an empty message being RX'ed 1815 * in userspace, but that is ignored. 1816 * 1817 * We can then retry with the larger buffer. 1818 */ 1819 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1820 !skb->len && !state->split && 1821 cb->min_dump_alloc < 4096) { 1822 cb->min_dump_alloc = 4096; 1823 state->split_start = 0; 1824 rtnl_unlock(); 1825 return 1; 1826 } 1827 idx--; 1828 break; 1829 } 1830 } while (state->split_start > 0); 1831 break; 1832 } 1833 rtnl_unlock(); 1834 1835 state->start = idx; 1836 1837 return skb->len; 1838} 1839 1840static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1841{ 1842 kfree((void *)cb->args[0]); 1843 return 0; 1844} 1845 1846static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1847{ 1848 struct sk_buff *msg; 1849 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1850 struct nl80211_dump_wiphy_state state = {}; 1851 1852 msg = nlmsg_new(4096, GFP_KERNEL); 1853 if (!msg) 1854 return -ENOMEM; 1855 1856 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 1857 info->snd_portid, info->snd_seq, 0, 1858 &state) < 0) { 1859 nlmsg_free(msg); 1860 return -ENOBUFS; 1861 } 1862 1863 return genlmsg_reply(msg, info); 1864} 1865 1866static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1867 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1868 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1869 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1870 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1871 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1872}; 1873 1874static int parse_txq_params(struct nlattr *tb[], 1875 struct ieee80211_txq_params *txq_params) 1876{ 1877 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1878 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1879 !tb[NL80211_TXQ_ATTR_AIFS]) 1880 return -EINVAL; 1881 1882 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1883 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1884 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1885 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1886 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1887 1888 if (txq_params->ac >= NL80211_NUM_ACS) 1889 return -EINVAL; 1890 1891 return 0; 1892} 1893 1894static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1895{ 1896 /* 1897 * You can only set the channel explicitly for WDS interfaces, 1898 * all others have their channel managed via their respective 1899 * "establish a connection" command (connect, join, ...) 1900 * 1901 * For AP/GO and mesh mode, the channel can be set with the 1902 * channel userspace API, but is only stored and passed to the 1903 * low-level driver when the AP starts or the mesh is joined. 1904 * This is for backward compatibility, userspace can also give 1905 * the channel in the start-ap or join-mesh commands instead. 1906 * 1907 * Monitors are special as they are normally slaved to 1908 * whatever else is going on, so they have their own special 1909 * operation to set the monitor channel if possible. 1910 */ 1911 return !wdev || 1912 wdev->iftype == NL80211_IFTYPE_AP || 1913 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1914 wdev->iftype == NL80211_IFTYPE_MONITOR || 1915 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1916} 1917 1918static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1919 struct genl_info *info, 1920 struct cfg80211_chan_def *chandef) 1921{ 1922 u32 control_freq; 1923 1924 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1925 return -EINVAL; 1926 1927 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1928 1929 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1930 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1931 chandef->center_freq1 = control_freq; 1932 chandef->center_freq2 = 0; 1933 1934 /* Primary channel not allowed */ 1935 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1936 return -EINVAL; 1937 1938 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1939 enum nl80211_channel_type chantype; 1940 1941 chantype = nla_get_u32( 1942 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1943 1944 switch (chantype) { 1945 case NL80211_CHAN_NO_HT: 1946 case NL80211_CHAN_HT20: 1947 case NL80211_CHAN_HT40PLUS: 1948 case NL80211_CHAN_HT40MINUS: 1949 cfg80211_chandef_create(chandef, chandef->chan, 1950 chantype); 1951 break; 1952 default: 1953 return -EINVAL; 1954 } 1955 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1956 chandef->width = 1957 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1958 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1959 chandef->center_freq1 = 1960 nla_get_u32( 1961 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1962 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1963 chandef->center_freq2 = 1964 nla_get_u32( 1965 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1966 } 1967 1968 if (!cfg80211_chandef_valid(chandef)) 1969 return -EINVAL; 1970 1971 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1972 IEEE80211_CHAN_DISABLED)) 1973 return -EINVAL; 1974 1975 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1976 chandef->width == NL80211_CHAN_WIDTH_10) && 1977 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1978 return -EINVAL; 1979 1980 return 0; 1981} 1982 1983static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1984 struct net_device *dev, 1985 struct genl_info *info) 1986{ 1987 struct cfg80211_chan_def chandef; 1988 int result; 1989 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1990 struct wireless_dev *wdev = NULL; 1991 1992 if (dev) 1993 wdev = dev->ieee80211_ptr; 1994 if (!nl80211_can_set_dev_channel(wdev)) 1995 return -EOPNOTSUPP; 1996 if (wdev) 1997 iftype = wdev->iftype; 1998 1999 result = nl80211_parse_chandef(rdev, info, &chandef); 2000 if (result) 2001 return result; 2002 2003 switch (iftype) { 2004 case NL80211_IFTYPE_AP: 2005 case NL80211_IFTYPE_P2P_GO: 2006 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) { 2007 result = -EINVAL; 2008 break; 2009 } 2010 if (wdev->beacon_interval) { 2011 if (!dev || !rdev->ops->set_ap_chanwidth || 2012 !(rdev->wiphy.features & 2013 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2014 result = -EBUSY; 2015 break; 2016 } 2017 2018 /* Only allow dynamic channel width changes */ 2019 if (chandef.chan != wdev->preset_chandef.chan) { 2020 result = -EBUSY; 2021 break; 2022 } 2023 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2024 if (result) 2025 break; 2026 } 2027 wdev->preset_chandef = chandef; 2028 result = 0; 2029 break; 2030 case NL80211_IFTYPE_MESH_POINT: 2031 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2032 break; 2033 case NL80211_IFTYPE_MONITOR: 2034 result = cfg80211_set_monitor_channel(rdev, &chandef); 2035 break; 2036 default: 2037 result = -EINVAL; 2038 } 2039 2040 return result; 2041} 2042 2043static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2044{ 2045 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2046 struct net_device *netdev = info->user_ptr[1]; 2047 2048 return __nl80211_set_channel(rdev, netdev, info); 2049} 2050 2051static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2052{ 2053 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2054 struct net_device *dev = info->user_ptr[1]; 2055 struct wireless_dev *wdev = dev->ieee80211_ptr; 2056 const u8 *bssid; 2057 2058 if (!info->attrs[NL80211_ATTR_MAC]) 2059 return -EINVAL; 2060 2061 if (netif_running(dev)) 2062 return -EBUSY; 2063 2064 if (!rdev->ops->set_wds_peer) 2065 return -EOPNOTSUPP; 2066 2067 if (wdev->iftype != NL80211_IFTYPE_WDS) 2068 return -EOPNOTSUPP; 2069 2070 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2071 return rdev_set_wds_peer(rdev, dev, bssid); 2072} 2073 2074 2075static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2076{ 2077 struct cfg80211_registered_device *rdev; 2078 struct net_device *netdev = NULL; 2079 struct wireless_dev *wdev; 2080 int result = 0, rem_txq_params = 0; 2081 struct nlattr *nl_txq_params; 2082 u32 changed; 2083 u8 retry_short = 0, retry_long = 0; 2084 u32 frag_threshold = 0, rts_threshold = 0; 2085 u8 coverage_class = 0; 2086 2087 ASSERT_RTNL(); 2088 2089 /* 2090 * Try to find the wiphy and netdev. Normally this 2091 * function shouldn't need the netdev, but this is 2092 * done for backward compatibility -- previously 2093 * setting the channel was done per wiphy, but now 2094 * it is per netdev. Previous userland like hostapd 2095 * also passed a netdev to set_wiphy, so that it is 2096 * possible to let that go to the right netdev! 2097 */ 2098 2099 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2100 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2101 2102 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2103 if (netdev && netdev->ieee80211_ptr) 2104 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2105 else 2106 netdev = NULL; 2107 } 2108 2109 if (!netdev) { 2110 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2111 info->attrs); 2112 if (IS_ERR(rdev)) 2113 return PTR_ERR(rdev); 2114 wdev = NULL; 2115 netdev = NULL; 2116 result = 0; 2117 } else 2118 wdev = netdev->ieee80211_ptr; 2119 2120 /* 2121 * end workaround code, by now the rdev is available 2122 * and locked, and wdev may or may not be NULL. 2123 */ 2124 2125 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2126 result = cfg80211_dev_rename( 2127 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2128 2129 if (result) 2130 return result; 2131 2132 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2133 struct ieee80211_txq_params txq_params; 2134 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2135 2136 if (!rdev->ops->set_txq_params) 2137 return -EOPNOTSUPP; 2138 2139 if (!netdev) 2140 return -EINVAL; 2141 2142 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2143 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2144 return -EINVAL; 2145 2146 if (!netif_running(netdev)) 2147 return -ENETDOWN; 2148 2149 nla_for_each_nested(nl_txq_params, 2150 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2151 rem_txq_params) { 2152 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2153 nla_data(nl_txq_params), 2154 nla_len(nl_txq_params), 2155 txq_params_policy); 2156 if (result) 2157 return result; 2158 result = parse_txq_params(tb, &txq_params); 2159 if (result) 2160 return result; 2161 2162 result = rdev_set_txq_params(rdev, netdev, 2163 &txq_params); 2164 if (result) 2165 return result; 2166 } 2167 } 2168 2169 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2170 result = __nl80211_set_channel( 2171 rdev, 2172 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2173 info); 2174 if (result) 2175 return result; 2176 } 2177 2178 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2179 struct wireless_dev *txp_wdev = wdev; 2180 enum nl80211_tx_power_setting type; 2181 int idx, mbm = 0; 2182 2183 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2184 txp_wdev = NULL; 2185 2186 if (!rdev->ops->set_tx_power) 2187 return -EOPNOTSUPP; 2188 2189 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2190 type = nla_get_u32(info->attrs[idx]); 2191 2192 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2193 (type != NL80211_TX_POWER_AUTOMATIC)) 2194 return -EINVAL; 2195 2196 if (type != NL80211_TX_POWER_AUTOMATIC) { 2197 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2198 mbm = nla_get_u32(info->attrs[idx]); 2199 } 2200 2201 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2202 if (result) 2203 return result; 2204 } 2205 2206 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2207 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2208 u32 tx_ant, rx_ant; 2209 if ((!rdev->wiphy.available_antennas_tx && 2210 !rdev->wiphy.available_antennas_rx) || 2211 !rdev->ops->set_antenna) 2212 return -EOPNOTSUPP; 2213 2214 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2215 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2216 2217 /* reject antenna configurations which don't match the 2218 * available antenna masks, except for the "all" mask */ 2219 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2220 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2221 return -EINVAL; 2222 2223 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2224 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2225 2226 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2227 if (result) 2228 return result; 2229 } 2230 2231 changed = 0; 2232 2233 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2234 retry_short = nla_get_u8( 2235 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2236 if (retry_short == 0) 2237 return -EINVAL; 2238 2239 changed |= WIPHY_PARAM_RETRY_SHORT; 2240 } 2241 2242 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2243 retry_long = nla_get_u8( 2244 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2245 if (retry_long == 0) 2246 return -EINVAL; 2247 2248 changed |= WIPHY_PARAM_RETRY_LONG; 2249 } 2250 2251 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2252 frag_threshold = nla_get_u32( 2253 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2254 if (frag_threshold < 256) 2255 return -EINVAL; 2256 2257 if (frag_threshold != (u32) -1) { 2258 /* 2259 * Fragments (apart from the last one) are required to 2260 * have even length. Make the fragmentation code 2261 * simpler by stripping LSB should someone try to use 2262 * odd threshold value. 2263 */ 2264 frag_threshold &= ~0x1; 2265 } 2266 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2267 } 2268 2269 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2270 rts_threshold = nla_get_u32( 2271 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2272 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2273 } 2274 2275 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2276 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2277 return -EINVAL; 2278 2279 coverage_class = nla_get_u8( 2280 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2281 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2282 } 2283 2284 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2285 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2286 return -EOPNOTSUPP; 2287 2288 changed |= WIPHY_PARAM_DYN_ACK; 2289 } 2290 2291 if (changed) { 2292 u8 old_retry_short, old_retry_long; 2293 u32 old_frag_threshold, old_rts_threshold; 2294 u8 old_coverage_class; 2295 2296 if (!rdev->ops->set_wiphy_params) 2297 return -EOPNOTSUPP; 2298 2299 old_retry_short = rdev->wiphy.retry_short; 2300 old_retry_long = rdev->wiphy.retry_long; 2301 old_frag_threshold = rdev->wiphy.frag_threshold; 2302 old_rts_threshold = rdev->wiphy.rts_threshold; 2303 old_coverage_class = rdev->wiphy.coverage_class; 2304 2305 if (changed & WIPHY_PARAM_RETRY_SHORT) 2306 rdev->wiphy.retry_short = retry_short; 2307 if (changed & WIPHY_PARAM_RETRY_LONG) 2308 rdev->wiphy.retry_long = retry_long; 2309 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2310 rdev->wiphy.frag_threshold = frag_threshold; 2311 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2312 rdev->wiphy.rts_threshold = rts_threshold; 2313 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2314 rdev->wiphy.coverage_class = coverage_class; 2315 2316 result = rdev_set_wiphy_params(rdev, changed); 2317 if (result) { 2318 rdev->wiphy.retry_short = old_retry_short; 2319 rdev->wiphy.retry_long = old_retry_long; 2320 rdev->wiphy.frag_threshold = old_frag_threshold; 2321 rdev->wiphy.rts_threshold = old_rts_threshold; 2322 rdev->wiphy.coverage_class = old_coverage_class; 2323 } 2324 } 2325 return 0; 2326} 2327 2328static inline u64 wdev_id(struct wireless_dev *wdev) 2329{ 2330 return (u64)wdev->identifier | 2331 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2332} 2333 2334static int nl80211_send_chandef(struct sk_buff *msg, 2335 const struct cfg80211_chan_def *chandef) 2336{ 2337 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2338 return -EINVAL; 2339 2340 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2341 chandef->chan->center_freq)) 2342 return -ENOBUFS; 2343 switch (chandef->width) { 2344 case NL80211_CHAN_WIDTH_20_NOHT: 2345 case NL80211_CHAN_WIDTH_20: 2346 case NL80211_CHAN_WIDTH_40: 2347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2348 cfg80211_get_chandef_type(chandef))) 2349 return -ENOBUFS; 2350 break; 2351 default: 2352 break; 2353 } 2354 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2355 return -ENOBUFS; 2356 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2357 return -ENOBUFS; 2358 if (chandef->center_freq2 && 2359 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2360 return -ENOBUFS; 2361 return 0; 2362} 2363 2364static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2365 struct cfg80211_registered_device *rdev, 2366 struct wireless_dev *wdev, bool removal) 2367{ 2368 struct net_device *dev = wdev->netdev; 2369 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2370 void *hdr; 2371 2372 if (removal) 2373 cmd = NL80211_CMD_DEL_INTERFACE; 2374 2375 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2376 if (!hdr) 2377 return -1; 2378 2379 if (dev && 2380 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2381 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2382 goto nla_put_failure; 2383 2384 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2385 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2386 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2387 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2388 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2389 rdev->devlist_generation ^ 2390 (cfg80211_rdev_list_generation << 2))) 2391 goto nla_put_failure; 2392 2393 if (rdev->ops->get_channel) { 2394 int ret; 2395 struct cfg80211_chan_def chandef; 2396 2397 ret = rdev_get_channel(rdev, wdev, &chandef); 2398 if (ret == 0) { 2399 if (nl80211_send_chandef(msg, &chandef)) 2400 goto nla_put_failure; 2401 } 2402 } 2403 2404 if (wdev->ssid_len) { 2405 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2406 goto nla_put_failure; 2407 } 2408 2409 genlmsg_end(msg, hdr); 2410 return 0; 2411 2412 nla_put_failure: 2413 genlmsg_cancel(msg, hdr); 2414 return -EMSGSIZE; 2415} 2416 2417static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2418{ 2419 int wp_idx = 0; 2420 int if_idx = 0; 2421 int wp_start = cb->args[0]; 2422 int if_start = cb->args[1]; 2423 struct cfg80211_registered_device *rdev; 2424 struct wireless_dev *wdev; 2425 2426 rtnl_lock(); 2427 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2428 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2429 continue; 2430 if (wp_idx < wp_start) { 2431 wp_idx++; 2432 continue; 2433 } 2434 if_idx = 0; 2435 2436 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2437 if (if_idx < if_start) { 2438 if_idx++; 2439 continue; 2440 } 2441 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2442 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2443 rdev, wdev, false) < 0) { 2444 goto out; 2445 } 2446 if_idx++; 2447 } 2448 2449 wp_idx++; 2450 } 2451 out: 2452 rtnl_unlock(); 2453 2454 cb->args[0] = wp_idx; 2455 cb->args[1] = if_idx; 2456 2457 return skb->len; 2458} 2459 2460static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2461{ 2462 struct sk_buff *msg; 2463 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2464 struct wireless_dev *wdev = info->user_ptr[1]; 2465 2466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2467 if (!msg) 2468 return -ENOMEM; 2469 2470 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2471 rdev, wdev, false) < 0) { 2472 nlmsg_free(msg); 2473 return -ENOBUFS; 2474 } 2475 2476 return genlmsg_reply(msg, info); 2477} 2478 2479static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2480 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2481 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2482 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2483 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2484 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2485 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2486}; 2487 2488static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2489{ 2490 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2491 int flag; 2492 2493 *mntrflags = 0; 2494 2495 if (!nla) 2496 return -EINVAL; 2497 2498 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2499 nla, mntr_flags_policy)) 2500 return -EINVAL; 2501 2502 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2503 if (flags[flag]) 2504 *mntrflags |= (1<<flag); 2505 2506 return 0; 2507} 2508 2509static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2510 struct net_device *netdev, u8 use_4addr, 2511 enum nl80211_iftype iftype) 2512{ 2513 if (!use_4addr) { 2514 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2515 return -EBUSY; 2516 return 0; 2517 } 2518 2519 switch (iftype) { 2520 case NL80211_IFTYPE_AP_VLAN: 2521 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2522 return 0; 2523 break; 2524 case NL80211_IFTYPE_STATION: 2525 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2526 return 0; 2527 break; 2528 default: 2529 break; 2530 } 2531 2532 return -EOPNOTSUPP; 2533} 2534 2535static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2536{ 2537 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2538 struct vif_params params; 2539 int err; 2540 enum nl80211_iftype otype, ntype; 2541 struct net_device *dev = info->user_ptr[1]; 2542 u32 _flags, *flags = NULL; 2543 bool change = false; 2544 2545 memset(¶ms, 0, sizeof(params)); 2546 2547 otype = ntype = dev->ieee80211_ptr->iftype; 2548 2549 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2550 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2551 if (otype != ntype) 2552 change = true; 2553 if (ntype > NL80211_IFTYPE_MAX) 2554 return -EINVAL; 2555 } 2556 2557 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2558 struct wireless_dev *wdev = dev->ieee80211_ptr; 2559 2560 if (ntype != NL80211_IFTYPE_MESH_POINT) 2561 return -EINVAL; 2562 if (netif_running(dev)) 2563 return -EBUSY; 2564 2565 wdev_lock(wdev); 2566 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2567 IEEE80211_MAX_MESH_ID_LEN); 2568 wdev->mesh_id_up_len = 2569 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2570 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2571 wdev->mesh_id_up_len); 2572 wdev_unlock(wdev); 2573 } 2574 2575 if (info->attrs[NL80211_ATTR_4ADDR]) { 2576 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2577 change = true; 2578 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2579 if (err) 2580 return err; 2581 } else { 2582 params.use_4addr = -1; 2583 } 2584 2585 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2586 if (ntype != NL80211_IFTYPE_MONITOR) 2587 return -EINVAL; 2588 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2589 &_flags); 2590 if (err) 2591 return err; 2592 2593 flags = &_flags; 2594 change = true; 2595 } 2596 2597 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2598 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2599 return -EOPNOTSUPP; 2600 2601 if (change) 2602 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2603 else 2604 err = 0; 2605 2606 if (!err && params.use_4addr != -1) 2607 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2608 2609 return err; 2610} 2611 2612static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2613{ 2614 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2615 struct vif_params params; 2616 struct wireless_dev *wdev; 2617 struct sk_buff *msg, *event; 2618 int err; 2619 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2620 u32 flags; 2621 2622 /* to avoid failing a new interface creation due to pending removal */ 2623 cfg80211_destroy_ifaces(rdev); 2624 2625 memset(¶ms, 0, sizeof(params)); 2626 2627 if (!info->attrs[NL80211_ATTR_IFNAME]) 2628 return -EINVAL; 2629 2630 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2631 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2632 if (type > NL80211_IFTYPE_MAX) 2633 return -EINVAL; 2634 } 2635 2636 if (!rdev->ops->add_virtual_intf || 2637 !(rdev->wiphy.interface_modes & (1 << type))) 2638 return -EOPNOTSUPP; 2639 2640 if ((type == NL80211_IFTYPE_P2P_DEVICE || 2641 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2642 info->attrs[NL80211_ATTR_MAC]) { 2643 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2644 ETH_ALEN); 2645 if (!is_valid_ether_addr(params.macaddr)) 2646 return -EADDRNOTAVAIL; 2647 } 2648 2649 if (info->attrs[NL80211_ATTR_4ADDR]) { 2650 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2651 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2652 if (err) 2653 return err; 2654 } 2655 2656 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2657 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2658 &flags); 2659 2660 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2661 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2662 return -EOPNOTSUPP; 2663 2664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2665 if (!msg) 2666 return -ENOMEM; 2667 2668 wdev = rdev_add_virtual_intf(rdev, 2669 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2670 NET_NAME_USER, type, err ? NULL : &flags, 2671 ¶ms); 2672 if (WARN_ON(!wdev)) { 2673 nlmsg_free(msg); 2674 return -EPROTO; 2675 } else if (IS_ERR(wdev)) { 2676 nlmsg_free(msg); 2677 return PTR_ERR(wdev); 2678 } 2679 2680 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 2681 wdev->owner_nlportid = info->snd_portid; 2682 2683 switch (type) { 2684 case NL80211_IFTYPE_MESH_POINT: 2685 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2686 break; 2687 wdev_lock(wdev); 2688 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2689 IEEE80211_MAX_MESH_ID_LEN); 2690 wdev->mesh_id_up_len = 2691 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2692 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2693 wdev->mesh_id_up_len); 2694 wdev_unlock(wdev); 2695 break; 2696 case NL80211_IFTYPE_P2P_DEVICE: 2697 /* 2698 * P2P Device doesn't have a netdev, so doesn't go 2699 * through the netdev notifier and must be added here 2700 */ 2701 mutex_init(&wdev->mtx); 2702 INIT_LIST_HEAD(&wdev->event_list); 2703 spin_lock_init(&wdev->event_lock); 2704 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2705 spin_lock_init(&wdev->mgmt_registrations_lock); 2706 2707 wdev->identifier = ++rdev->wdev_id; 2708 list_add_rcu(&wdev->list, &rdev->wdev_list); 2709 rdev->devlist_generation++; 2710 break; 2711 default: 2712 break; 2713 } 2714 2715 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2716 rdev, wdev, false) < 0) { 2717 nlmsg_free(msg); 2718 return -ENOBUFS; 2719 } 2720 2721 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2722 if (event) { 2723 if (nl80211_send_iface(event, 0, 0, 0, 2724 rdev, wdev, false) < 0) { 2725 nlmsg_free(event); 2726 goto out; 2727 } 2728 2729 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2730 event, 0, NL80211_MCGRP_CONFIG, 2731 GFP_KERNEL); 2732 } 2733 2734out: 2735 return genlmsg_reply(msg, info); 2736} 2737 2738static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2739{ 2740 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2741 struct wireless_dev *wdev = info->user_ptr[1]; 2742 struct sk_buff *msg; 2743 int status; 2744 2745 if (!rdev->ops->del_virtual_intf) 2746 return -EOPNOTSUPP; 2747 2748 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2749 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) { 2750 nlmsg_free(msg); 2751 msg = NULL; 2752 } 2753 2754 /* 2755 * If we remove a wireless device without a netdev then clear 2756 * user_ptr[1] so that nl80211_post_doit won't dereference it 2757 * to check if it needs to do dev_put(). Otherwise it crashes 2758 * since the wdev has been freed, unlike with a netdev where 2759 * we need the dev_put() for the netdev to really be freed. 2760 */ 2761 if (!wdev->netdev) 2762 info->user_ptr[1] = NULL; 2763 2764 status = rdev_del_virtual_intf(rdev, wdev); 2765 if (status >= 0 && msg) 2766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2767 msg, 0, NL80211_MCGRP_CONFIG, 2768 GFP_KERNEL); 2769 else 2770 nlmsg_free(msg); 2771 2772 return status; 2773} 2774 2775static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2776{ 2777 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2778 struct net_device *dev = info->user_ptr[1]; 2779 u16 noack_map; 2780 2781 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2782 return -EINVAL; 2783 2784 if (!rdev->ops->set_noack_map) 2785 return -EOPNOTSUPP; 2786 2787 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2788 2789 return rdev_set_noack_map(rdev, dev, noack_map); 2790} 2791 2792struct get_key_cookie { 2793 struct sk_buff *msg; 2794 int error; 2795 int idx; 2796}; 2797 2798static void get_key_callback(void *c, struct key_params *params) 2799{ 2800 struct nlattr *key; 2801 struct get_key_cookie *cookie = c; 2802 2803 if ((params->key && 2804 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2805 params->key_len, params->key)) || 2806 (params->seq && 2807 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2808 params->seq_len, params->seq)) || 2809 (params->cipher && 2810 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2811 params->cipher))) 2812 goto nla_put_failure; 2813 2814 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2815 if (!key) 2816 goto nla_put_failure; 2817 2818 if ((params->key && 2819 nla_put(cookie->msg, NL80211_KEY_DATA, 2820 params->key_len, params->key)) || 2821 (params->seq && 2822 nla_put(cookie->msg, NL80211_KEY_SEQ, 2823 params->seq_len, params->seq)) || 2824 (params->cipher && 2825 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2826 params->cipher))) 2827 goto nla_put_failure; 2828 2829 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2830 goto nla_put_failure; 2831 2832 nla_nest_end(cookie->msg, key); 2833 2834 return; 2835 nla_put_failure: 2836 cookie->error = 1; 2837} 2838 2839static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2840{ 2841 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2842 int err; 2843 struct net_device *dev = info->user_ptr[1]; 2844 u8 key_idx = 0; 2845 const u8 *mac_addr = NULL; 2846 bool pairwise; 2847 struct get_key_cookie cookie = { 2848 .error = 0, 2849 }; 2850 void *hdr; 2851 struct sk_buff *msg; 2852 2853 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2854 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2855 2856 if (key_idx > 5) 2857 return -EINVAL; 2858 2859 if (info->attrs[NL80211_ATTR_MAC]) 2860 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2861 2862 pairwise = !!mac_addr; 2863 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2864 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2865 if (kt >= NUM_NL80211_KEYTYPES) 2866 return -EINVAL; 2867 if (kt != NL80211_KEYTYPE_GROUP && 2868 kt != NL80211_KEYTYPE_PAIRWISE) 2869 return -EINVAL; 2870 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2871 } 2872 2873 if (!rdev->ops->get_key) 2874 return -EOPNOTSUPP; 2875 2876 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2877 return -ENOENT; 2878 2879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2880 if (!msg) 2881 return -ENOMEM; 2882 2883 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2884 NL80211_CMD_NEW_KEY); 2885 if (!hdr) 2886 goto nla_put_failure; 2887 2888 cookie.msg = msg; 2889 cookie.idx = key_idx; 2890 2891 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2892 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2893 goto nla_put_failure; 2894 if (mac_addr && 2895 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2896 goto nla_put_failure; 2897 2898 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2899 get_key_callback); 2900 2901 if (err) 2902 goto free_msg; 2903 2904 if (cookie.error) 2905 goto nla_put_failure; 2906 2907 genlmsg_end(msg, hdr); 2908 return genlmsg_reply(msg, info); 2909 2910 nla_put_failure: 2911 err = -ENOBUFS; 2912 free_msg: 2913 nlmsg_free(msg); 2914 return err; 2915} 2916 2917static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2918{ 2919 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2920 struct key_parse key; 2921 int err; 2922 struct net_device *dev = info->user_ptr[1]; 2923 2924 err = nl80211_parse_key(info, &key); 2925 if (err) 2926 return err; 2927 2928 if (key.idx < 0) 2929 return -EINVAL; 2930 2931 /* only support setting default key */ 2932 if (!key.def && !key.defmgmt) 2933 return -EINVAL; 2934 2935 wdev_lock(dev->ieee80211_ptr); 2936 2937 if (key.def) { 2938 if (!rdev->ops->set_default_key) { 2939 err = -EOPNOTSUPP; 2940 goto out; 2941 } 2942 2943 err = nl80211_key_allowed(dev->ieee80211_ptr); 2944 if (err) 2945 goto out; 2946 2947 err = rdev_set_default_key(rdev, dev, key.idx, 2948 key.def_uni, key.def_multi); 2949 2950 if (err) 2951 goto out; 2952 2953#ifdef CONFIG_CFG80211_WEXT 2954 dev->ieee80211_ptr->wext.default_key = key.idx; 2955#endif 2956 } else { 2957 if (key.def_uni || !key.def_multi) { 2958 err = -EINVAL; 2959 goto out; 2960 } 2961 2962 if (!rdev->ops->set_default_mgmt_key) { 2963 err = -EOPNOTSUPP; 2964 goto out; 2965 } 2966 2967 err = nl80211_key_allowed(dev->ieee80211_ptr); 2968 if (err) 2969 goto out; 2970 2971 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2972 if (err) 2973 goto out; 2974 2975#ifdef CONFIG_CFG80211_WEXT 2976 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2977#endif 2978 } 2979 2980 out: 2981 wdev_unlock(dev->ieee80211_ptr); 2982 2983 return err; 2984} 2985 2986static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2987{ 2988 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2989 int err; 2990 struct net_device *dev = info->user_ptr[1]; 2991 struct key_parse key; 2992 const u8 *mac_addr = NULL; 2993 2994 err = nl80211_parse_key(info, &key); 2995 if (err) 2996 return err; 2997 2998 if (!key.p.key) 2999 return -EINVAL; 3000 3001 if (info->attrs[NL80211_ATTR_MAC]) 3002 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3003 3004 if (key.type == -1) { 3005 if (mac_addr) 3006 key.type = NL80211_KEYTYPE_PAIRWISE; 3007 else 3008 key.type = NL80211_KEYTYPE_GROUP; 3009 } 3010 3011 /* for now */ 3012 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3013 key.type != NL80211_KEYTYPE_GROUP) 3014 return -EINVAL; 3015 3016 if (!rdev->ops->add_key) 3017 return -EOPNOTSUPP; 3018 3019 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3020 key.type == NL80211_KEYTYPE_PAIRWISE, 3021 mac_addr)) 3022 return -EINVAL; 3023 3024 wdev_lock(dev->ieee80211_ptr); 3025 err = nl80211_key_allowed(dev->ieee80211_ptr); 3026 if (!err) 3027 err = rdev_add_key(rdev, dev, key.idx, 3028 key.type == NL80211_KEYTYPE_PAIRWISE, 3029 mac_addr, &key.p); 3030 wdev_unlock(dev->ieee80211_ptr); 3031 3032 return err; 3033} 3034 3035static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3036{ 3037 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3038 int err; 3039 struct net_device *dev = info->user_ptr[1]; 3040 u8 *mac_addr = NULL; 3041 struct key_parse key; 3042 3043 err = nl80211_parse_key(info, &key); 3044 if (err) 3045 return err; 3046 3047 if (info->attrs[NL80211_ATTR_MAC]) 3048 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3049 3050 if (key.type == -1) { 3051 if (mac_addr) 3052 key.type = NL80211_KEYTYPE_PAIRWISE; 3053 else 3054 key.type = NL80211_KEYTYPE_GROUP; 3055 } 3056 3057 /* for now */ 3058 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3059 key.type != NL80211_KEYTYPE_GROUP) 3060 return -EINVAL; 3061 3062 if (!rdev->ops->del_key) 3063 return -EOPNOTSUPP; 3064 3065 wdev_lock(dev->ieee80211_ptr); 3066 err = nl80211_key_allowed(dev->ieee80211_ptr); 3067 3068 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3069 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3070 err = -ENOENT; 3071 3072 if (!err) 3073 err = rdev_del_key(rdev, dev, key.idx, 3074 key.type == NL80211_KEYTYPE_PAIRWISE, 3075 mac_addr); 3076 3077#ifdef CONFIG_CFG80211_WEXT 3078 if (!err) { 3079 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3080 dev->ieee80211_ptr->wext.default_key = -1; 3081 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3082 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3083 } 3084#endif 3085 wdev_unlock(dev->ieee80211_ptr); 3086 3087 return err; 3088} 3089 3090/* This function returns an error or the number of nested attributes */ 3091static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3092{ 3093 struct nlattr *attr; 3094 int n_entries = 0, tmp; 3095 3096 nla_for_each_nested(attr, nl_attr, tmp) { 3097 if (nla_len(attr) != ETH_ALEN) 3098 return -EINVAL; 3099 3100 n_entries++; 3101 } 3102 3103 return n_entries; 3104} 3105 3106/* 3107 * This function parses ACL information and allocates memory for ACL data. 3108 * On successful return, the calling function is responsible to free the 3109 * ACL buffer returned by this function. 3110 */ 3111static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3112 struct genl_info *info) 3113{ 3114 enum nl80211_acl_policy acl_policy; 3115 struct nlattr *attr; 3116 struct cfg80211_acl_data *acl; 3117 int i = 0, n_entries, tmp; 3118 3119 if (!wiphy->max_acl_mac_addrs) 3120 return ERR_PTR(-EOPNOTSUPP); 3121 3122 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3123 return ERR_PTR(-EINVAL); 3124 3125 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3126 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3127 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3128 return ERR_PTR(-EINVAL); 3129 3130 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3131 return ERR_PTR(-EINVAL); 3132 3133 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3134 if (n_entries < 0) 3135 return ERR_PTR(n_entries); 3136 3137 if (n_entries > wiphy->max_acl_mac_addrs) 3138 return ERR_PTR(-ENOTSUPP); 3139 3140 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3141 GFP_KERNEL); 3142 if (!acl) 3143 return ERR_PTR(-ENOMEM); 3144 3145 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3146 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3147 i++; 3148 } 3149 3150 acl->n_acl_entries = n_entries; 3151 acl->acl_policy = acl_policy; 3152 3153 return acl; 3154} 3155 3156static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3157{ 3158 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3159 struct net_device *dev = info->user_ptr[1]; 3160 struct cfg80211_acl_data *acl; 3161 int err; 3162 3163 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3164 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3165 return -EOPNOTSUPP; 3166 3167 if (!dev->ieee80211_ptr->beacon_interval) 3168 return -EINVAL; 3169 3170 acl = parse_acl_data(&rdev->wiphy, info); 3171 if (IS_ERR(acl)) 3172 return PTR_ERR(acl); 3173 3174 err = rdev_set_mac_acl(rdev, dev, acl); 3175 3176 kfree(acl); 3177 3178 return err; 3179} 3180 3181static int nl80211_parse_beacon(struct nlattr *attrs[], 3182 struct cfg80211_beacon_data *bcn) 3183{ 3184 bool haveinfo = false; 3185 3186 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3187 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3188 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3189 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3190 return -EINVAL; 3191 3192 memset(bcn, 0, sizeof(*bcn)); 3193 3194 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3195 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3196 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3197 if (!bcn->head_len) 3198 return -EINVAL; 3199 haveinfo = true; 3200 } 3201 3202 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3203 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3204 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3205 haveinfo = true; 3206 } 3207 3208 if (!haveinfo) 3209 return -EINVAL; 3210 3211 if (attrs[NL80211_ATTR_IE]) { 3212 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3213 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3214 } 3215 3216 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3217 bcn->proberesp_ies = 3218 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3219 bcn->proberesp_ies_len = 3220 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3221 } 3222 3223 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3224 bcn->assocresp_ies = 3225 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3226 bcn->assocresp_ies_len = 3227 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3228 } 3229 3230 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3231 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3232 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3233 } 3234 3235 return 0; 3236} 3237 3238static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3239 struct cfg80211_ap_settings *params) 3240{ 3241 struct wireless_dev *wdev; 3242 bool ret = false; 3243 3244 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3245 if (wdev->iftype != NL80211_IFTYPE_AP && 3246 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3247 continue; 3248 3249 if (!wdev->preset_chandef.chan) 3250 continue; 3251 3252 params->chandef = wdev->preset_chandef; 3253 ret = true; 3254 break; 3255 } 3256 3257 return ret; 3258} 3259 3260static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3261 enum nl80211_auth_type auth_type, 3262 enum nl80211_commands cmd) 3263{ 3264 if (auth_type > NL80211_AUTHTYPE_MAX) 3265 return false; 3266 3267 switch (cmd) { 3268 case NL80211_CMD_AUTHENTICATE: 3269 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3270 auth_type == NL80211_AUTHTYPE_SAE) 3271 return false; 3272 return true; 3273 case NL80211_CMD_CONNECT: 3274 case NL80211_CMD_START_AP: 3275 /* SAE not supported yet */ 3276 if (auth_type == NL80211_AUTHTYPE_SAE) 3277 return false; 3278 return true; 3279 default: 3280 return false; 3281 } 3282} 3283 3284static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3285{ 3286 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3287 struct net_device *dev = info->user_ptr[1]; 3288 struct wireless_dev *wdev = dev->ieee80211_ptr; 3289 struct cfg80211_ap_settings params; 3290 int err; 3291 3292 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3293 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3294 return -EOPNOTSUPP; 3295 3296 if (!rdev->ops->start_ap) 3297 return -EOPNOTSUPP; 3298 3299 if (wdev->beacon_interval) 3300 return -EALREADY; 3301 3302 memset(¶ms, 0, sizeof(params)); 3303 3304 /* these are required for START_AP */ 3305 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3306 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3307 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3308 return -EINVAL; 3309 3310 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3311 if (err) 3312 return err; 3313 3314 params.beacon_interval = 3315 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3316 params.dtim_period = 3317 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3318 3319 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3320 if (err) 3321 return err; 3322 3323 /* 3324 * In theory, some of these attributes should be required here 3325 * but since they were not used when the command was originally 3326 * added, keep them optional for old user space programs to let 3327 * them continue to work with drivers that do not need the 3328 * additional information -- drivers must check! 3329 */ 3330 if (info->attrs[NL80211_ATTR_SSID]) { 3331 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3332 params.ssid_len = 3333 nla_len(info->attrs[NL80211_ATTR_SSID]); 3334 if (params.ssid_len == 0 || 3335 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3336 return -EINVAL; 3337 } 3338 3339 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3340 params.hidden_ssid = nla_get_u32( 3341 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3342 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3343 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3344 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3345 return -EINVAL; 3346 } 3347 3348 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3349 3350 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3351 params.auth_type = nla_get_u32( 3352 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3353 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3354 NL80211_CMD_START_AP)) 3355 return -EINVAL; 3356 } else 3357 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3358 3359 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3360 NL80211_MAX_NR_CIPHER_SUITES); 3361 if (err) 3362 return err; 3363 3364 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3365 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3366 return -EOPNOTSUPP; 3367 params.inactivity_timeout = nla_get_u16( 3368 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3369 } 3370 3371 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3372 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3373 return -EINVAL; 3374 params.p2p_ctwindow = 3375 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3376 if (params.p2p_ctwindow > 127) 3377 return -EINVAL; 3378 if (params.p2p_ctwindow != 0 && 3379 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3380 return -EINVAL; 3381 } 3382 3383 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3384 u8 tmp; 3385 3386 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3387 return -EINVAL; 3388 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3389 if (tmp > 1) 3390 return -EINVAL; 3391 params.p2p_opp_ps = tmp; 3392 if (params.p2p_opp_ps != 0 && 3393 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3394 return -EINVAL; 3395 } 3396 3397 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3398 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3399 if (err) 3400 return err; 3401 } else if (wdev->preset_chandef.chan) { 3402 params.chandef = wdev->preset_chandef; 3403 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3404 return -EINVAL; 3405 3406 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 3407 wdev->iftype)) 3408 return -EINVAL; 3409 3410 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 3411 params.smps_mode = 3412 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 3413 switch (params.smps_mode) { 3414 case NL80211_SMPS_OFF: 3415 break; 3416 case NL80211_SMPS_STATIC: 3417 if (!(rdev->wiphy.features & 3418 NL80211_FEATURE_STATIC_SMPS)) 3419 return -EINVAL; 3420 break; 3421 case NL80211_SMPS_DYNAMIC: 3422 if (!(rdev->wiphy.features & 3423 NL80211_FEATURE_DYNAMIC_SMPS)) 3424 return -EINVAL; 3425 break; 3426 default: 3427 return -EINVAL; 3428 } 3429 } else { 3430 params.smps_mode = NL80211_SMPS_OFF; 3431 } 3432 3433 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3434 params.acl = parse_acl_data(&rdev->wiphy, info); 3435 if (IS_ERR(params.acl)) 3436 return PTR_ERR(params.acl); 3437 } 3438 3439 wdev_lock(wdev); 3440 err = rdev_start_ap(rdev, dev, ¶ms); 3441 if (!err) { 3442 wdev->preset_chandef = params.chandef; 3443 wdev->beacon_interval = params.beacon_interval; 3444 wdev->chandef = params.chandef; 3445 wdev->ssid_len = params.ssid_len; 3446 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3447 } 3448 wdev_unlock(wdev); 3449 3450 kfree(params.acl); 3451 3452 return err; 3453} 3454 3455static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3456{ 3457 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3458 struct net_device *dev = info->user_ptr[1]; 3459 struct wireless_dev *wdev = dev->ieee80211_ptr; 3460 struct cfg80211_beacon_data params; 3461 int err; 3462 3463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3465 return -EOPNOTSUPP; 3466 3467 if (!rdev->ops->change_beacon) 3468 return -EOPNOTSUPP; 3469 3470 if (!wdev->beacon_interval) 3471 return -EINVAL; 3472 3473 err = nl80211_parse_beacon(info->attrs, ¶ms); 3474 if (err) 3475 return err; 3476 3477 wdev_lock(wdev); 3478 err = rdev_change_beacon(rdev, dev, ¶ms); 3479 wdev_unlock(wdev); 3480 3481 return err; 3482} 3483 3484static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3485{ 3486 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3487 struct net_device *dev = info->user_ptr[1]; 3488 3489 return cfg80211_stop_ap(rdev, dev, false); 3490} 3491 3492static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3493 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3494 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3495 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3496 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3497 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3498 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3499}; 3500 3501static int parse_station_flags(struct genl_info *info, 3502 enum nl80211_iftype iftype, 3503 struct station_parameters *params) 3504{ 3505 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3506 struct nlattr *nla; 3507 int flag; 3508 3509 /* 3510 * Try parsing the new attribute first so userspace 3511 * can specify both for older kernels. 3512 */ 3513 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3514 if (nla) { 3515 struct nl80211_sta_flag_update *sta_flags; 3516 3517 sta_flags = nla_data(nla); 3518 params->sta_flags_mask = sta_flags->mask; 3519 params->sta_flags_set = sta_flags->set; 3520 params->sta_flags_set &= params->sta_flags_mask; 3521 if ((params->sta_flags_mask | 3522 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3523 return -EINVAL; 3524 return 0; 3525 } 3526 3527 /* if present, parse the old attribute */ 3528 3529 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3530 if (!nla) 3531 return 0; 3532 3533 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3534 nla, sta_flags_policy)) 3535 return -EINVAL; 3536 3537 /* 3538 * Only allow certain flags for interface types so that 3539 * other attributes are silently ignored. Remember that 3540 * this is backward compatibility code with old userspace 3541 * and shouldn't be hit in other cases anyway. 3542 */ 3543 switch (iftype) { 3544 case NL80211_IFTYPE_AP: 3545 case NL80211_IFTYPE_AP_VLAN: 3546 case NL80211_IFTYPE_P2P_GO: 3547 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3548 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3549 BIT(NL80211_STA_FLAG_WME) | 3550 BIT(NL80211_STA_FLAG_MFP); 3551 break; 3552 case NL80211_IFTYPE_P2P_CLIENT: 3553 case NL80211_IFTYPE_STATION: 3554 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3555 BIT(NL80211_STA_FLAG_TDLS_PEER); 3556 break; 3557 case NL80211_IFTYPE_MESH_POINT: 3558 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3559 BIT(NL80211_STA_FLAG_MFP) | 3560 BIT(NL80211_STA_FLAG_AUTHORIZED); 3561 default: 3562 return -EINVAL; 3563 } 3564 3565 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3566 if (flags[flag]) { 3567 params->sta_flags_set |= (1<<flag); 3568 3569 /* no longer support new API additions in old API */ 3570 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3571 return -EINVAL; 3572 } 3573 } 3574 3575 return 0; 3576} 3577 3578static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3579 int attr) 3580{ 3581 struct nlattr *rate; 3582 u32 bitrate; 3583 u16 bitrate_compat; 3584 enum nl80211_attrs rate_flg; 3585 3586 rate = nla_nest_start(msg, attr); 3587 if (!rate) 3588 return false; 3589 3590 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3591 bitrate = cfg80211_calculate_bitrate(info); 3592 /* report 16-bit bitrate only if we can */ 3593 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3594 if (bitrate > 0 && 3595 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3596 return false; 3597 if (bitrate_compat > 0 && 3598 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3599 return false; 3600 3601 switch (info->bw) { 3602 case RATE_INFO_BW_5: 3603 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 3604 break; 3605 case RATE_INFO_BW_10: 3606 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 3607 break; 3608 default: 3609 WARN_ON(1); 3610 /* fall through */ 3611 case RATE_INFO_BW_20: 3612 rate_flg = 0; 3613 break; 3614 case RATE_INFO_BW_40: 3615 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 3616 break; 3617 case RATE_INFO_BW_80: 3618 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 3619 break; 3620 case RATE_INFO_BW_160: 3621 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 3622 break; 3623 } 3624 3625 if (rate_flg && nla_put_flag(msg, rate_flg)) 3626 return false; 3627 3628 if (info->flags & RATE_INFO_FLAGS_MCS) { 3629 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3630 return false; 3631 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3632 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3633 return false; 3634 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3635 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3636 return false; 3637 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3638 return false; 3639 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3640 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3641 return false; 3642 } 3643 3644 nla_nest_end(msg, rate); 3645 return true; 3646} 3647 3648static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3649 int id) 3650{ 3651 void *attr; 3652 int i = 0; 3653 3654 if (!mask) 3655 return true; 3656 3657 attr = nla_nest_start(msg, id); 3658 if (!attr) 3659 return false; 3660 3661 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3662 if (!(mask & BIT(i))) 3663 continue; 3664 3665 if (nla_put_u8(msg, i, signal[i])) 3666 return false; 3667 } 3668 3669 nla_nest_end(msg, attr); 3670 3671 return true; 3672} 3673 3674static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 3675 u32 seq, int flags, 3676 struct cfg80211_registered_device *rdev, 3677 struct net_device *dev, 3678 const u8 *mac_addr, struct station_info *sinfo) 3679{ 3680 void *hdr; 3681 struct nlattr *sinfoattr, *bss_param; 3682 3683 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 3684 if (!hdr) 3685 return -1; 3686 3687 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3689 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3690 goto nla_put_failure; 3691 3692 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3693 if (!sinfoattr) 3694 goto nla_put_failure; 3695 3696#define PUT_SINFO(attr, memb, type) do { \ 3697 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \ 3698 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 3699 sinfo->memb)) \ 3700 goto nla_put_failure; \ 3701 } while (0) 3702 3703 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 3704 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 3705 3706 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) | 3707 BIT(NL80211_STA_INFO_RX_BYTES64)) && 3708 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3709 (u32)sinfo->rx_bytes)) 3710 goto nla_put_failure; 3711 3712 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) | 3713 BIT(NL80211_STA_INFO_TX_BYTES64)) && 3714 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3715 (u32)sinfo->tx_bytes)) 3716 goto nla_put_failure; 3717 3718 PUT_SINFO(RX_BYTES64, rx_bytes, u64); 3719 PUT_SINFO(TX_BYTES64, tx_bytes, u64); 3720 PUT_SINFO(LLID, llid, u16); 3721 PUT_SINFO(PLID, plid, u16); 3722 PUT_SINFO(PLINK_STATE, plink_state, u8); 3723 3724 switch (rdev->wiphy.signal_type) { 3725 case CFG80211_SIGNAL_TYPE_MBM: 3726 PUT_SINFO(SIGNAL, signal, u8); 3727 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 3728 break; 3729 default: 3730 break; 3731 } 3732 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) { 3733 if (!nl80211_put_signal(msg, sinfo->chains, 3734 sinfo->chain_signal, 3735 NL80211_STA_INFO_CHAIN_SIGNAL)) 3736 goto nla_put_failure; 3737 } 3738 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 3739 if (!nl80211_put_signal(msg, sinfo->chains, 3740 sinfo->chain_signal_avg, 3741 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3742 goto nla_put_failure; 3743 } 3744 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { 3745 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3746 NL80211_STA_INFO_TX_BITRATE)) 3747 goto nla_put_failure; 3748 } 3749 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) { 3750 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3751 NL80211_STA_INFO_RX_BITRATE)) 3752 goto nla_put_failure; 3753 } 3754 3755 PUT_SINFO(RX_PACKETS, rx_packets, u32); 3756 PUT_SINFO(TX_PACKETS, tx_packets, u32); 3757 PUT_SINFO(TX_RETRIES, tx_retries, u32); 3758 PUT_SINFO(TX_FAILED, tx_failed, u32); 3759 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 3760 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 3761 PUT_SINFO(LOCAL_PM, local_pm, u32); 3762 PUT_SINFO(PEER_PM, peer_pm, u32); 3763 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 3764 3765 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) { 3766 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3767 if (!bss_param) 3768 goto nla_put_failure; 3769 3770 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3771 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3772 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3773 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3774 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3775 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3776 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3777 sinfo->bss_param.dtim_period) || 3778 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3779 sinfo->bss_param.beacon_interval)) 3780 goto nla_put_failure; 3781 3782 nla_nest_end(msg, bss_param); 3783 } 3784 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) && 3785 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3786 sizeof(struct nl80211_sta_flag_update), 3787 &sinfo->sta_flags)) 3788 goto nla_put_failure; 3789 3790 PUT_SINFO(T_OFFSET, t_offset, u64); 3791 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64); 3792 PUT_SINFO(BEACON_RX, rx_beacon, u64); 3793 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 3794 3795#undef PUT_SINFO 3796 3797 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) { 3798 struct nlattr *tidsattr; 3799 int tid; 3800 3801 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 3802 if (!tidsattr) 3803 goto nla_put_failure; 3804 3805 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 3806 struct cfg80211_tid_stats *tidstats; 3807 struct nlattr *tidattr; 3808 3809 tidstats = &sinfo->pertid[tid]; 3810 3811 if (!tidstats->filled) 3812 continue; 3813 3814 tidattr = nla_nest_start(msg, tid + 1); 3815 if (!tidattr) 3816 goto nla_put_failure; 3817 3818#define PUT_TIDVAL(attr, memb, type) do { \ 3819 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 3820 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \ 3821 tidstats->memb)) \ 3822 goto nla_put_failure; \ 3823 } while (0) 3824 3825 PUT_TIDVAL(RX_MSDU, rx_msdu, u64); 3826 PUT_TIDVAL(TX_MSDU, tx_msdu, u64); 3827 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64); 3828 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64); 3829 3830#undef PUT_TIDVAL 3831 nla_nest_end(msg, tidattr); 3832 } 3833 3834 nla_nest_end(msg, tidsattr); 3835 } 3836 3837 nla_nest_end(msg, sinfoattr); 3838 3839 if (sinfo->assoc_req_ies_len && 3840 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3841 sinfo->assoc_req_ies)) 3842 goto nla_put_failure; 3843 3844 genlmsg_end(msg, hdr); 3845 return 0; 3846 3847 nla_put_failure: 3848 genlmsg_cancel(msg, hdr); 3849 return -EMSGSIZE; 3850} 3851 3852static int nl80211_dump_station(struct sk_buff *skb, 3853 struct netlink_callback *cb) 3854{ 3855 struct station_info sinfo; 3856 struct cfg80211_registered_device *rdev; 3857 struct wireless_dev *wdev; 3858 u8 mac_addr[ETH_ALEN]; 3859 int sta_idx = cb->args[2]; 3860 int err; 3861 3862 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 3863 if (err) 3864 return err; 3865 3866 if (!wdev->netdev) { 3867 err = -EINVAL; 3868 goto out_err; 3869 } 3870 3871 if (!rdev->ops->dump_station) { 3872 err = -EOPNOTSUPP; 3873 goto out_err; 3874 } 3875 3876 while (1) { 3877 memset(&sinfo, 0, sizeof(sinfo)); 3878 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 3879 mac_addr, &sinfo); 3880 if (err == -ENOENT) 3881 break; 3882 if (err) 3883 goto out_err; 3884 3885 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 3886 NETLINK_CB(cb->skb).portid, 3887 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3888 rdev, wdev->netdev, mac_addr, 3889 &sinfo) < 0) 3890 goto out; 3891 3892 sta_idx++; 3893 } 3894 3895 3896 out: 3897 cb->args[2] = sta_idx; 3898 err = skb->len; 3899 out_err: 3900 nl80211_finish_wdev_dump(rdev); 3901 3902 return err; 3903} 3904 3905static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3906{ 3907 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3908 struct net_device *dev = info->user_ptr[1]; 3909 struct station_info sinfo; 3910 struct sk_buff *msg; 3911 u8 *mac_addr = NULL; 3912 int err; 3913 3914 memset(&sinfo, 0, sizeof(sinfo)); 3915 3916 if (!info->attrs[NL80211_ATTR_MAC]) 3917 return -EINVAL; 3918 3919 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3920 3921 if (!rdev->ops->get_station) 3922 return -EOPNOTSUPP; 3923 3924 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3925 if (err) 3926 return err; 3927 3928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3929 if (!msg) 3930 return -ENOMEM; 3931 3932 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 3933 info->snd_portid, info->snd_seq, 0, 3934 rdev, dev, mac_addr, &sinfo) < 0) { 3935 nlmsg_free(msg); 3936 return -ENOBUFS; 3937 } 3938 3939 return genlmsg_reply(msg, info); 3940} 3941 3942int cfg80211_check_station_change(struct wiphy *wiphy, 3943 struct station_parameters *params, 3944 enum cfg80211_station_type statype) 3945{ 3946 if (params->listen_interval != -1) 3947 return -EINVAL; 3948 if (params->aid && 3949 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3950 return -EINVAL; 3951 3952 /* When you run into this, adjust the code below for the new flag */ 3953 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3954 3955 switch (statype) { 3956 case CFG80211_STA_MESH_PEER_KERNEL: 3957 case CFG80211_STA_MESH_PEER_USER: 3958 /* 3959 * No ignoring the TDLS flag here -- the userspace mesh 3960 * code doesn't have the bug of including TDLS in the 3961 * mask everywhere. 3962 */ 3963 if (params->sta_flags_mask & 3964 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3965 BIT(NL80211_STA_FLAG_MFP) | 3966 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3967 return -EINVAL; 3968 break; 3969 case CFG80211_STA_TDLS_PEER_SETUP: 3970 case CFG80211_STA_TDLS_PEER_ACTIVE: 3971 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3972 return -EINVAL; 3973 /* ignore since it can't change */ 3974 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3975 break; 3976 default: 3977 /* disallow mesh-specific things */ 3978 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3979 return -EINVAL; 3980 if (params->local_pm) 3981 return -EINVAL; 3982 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3983 return -EINVAL; 3984 } 3985 3986 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3987 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3988 /* TDLS can't be set, ... */ 3989 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3990 return -EINVAL; 3991 /* 3992 * ... but don't bother the driver with it. This works around 3993 * a hostapd/wpa_supplicant issue -- it always includes the 3994 * TLDS_PEER flag in the mask even for AP mode. 3995 */ 3996 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3997 } 3998 3999 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 4000 /* reject other things that can't change */ 4001 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4002 return -EINVAL; 4003 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4004 return -EINVAL; 4005 if (params->supported_rates) 4006 return -EINVAL; 4007 if (params->ext_capab || params->ht_capa || params->vht_capa) 4008 return -EINVAL; 4009 } 4010 4011 if (statype != CFG80211_STA_AP_CLIENT) { 4012 if (params->vlan) 4013 return -EINVAL; 4014 } 4015 4016 switch (statype) { 4017 case CFG80211_STA_AP_MLME_CLIENT: 4018 /* Use this only for authorizing/unauthorizing a station */ 4019 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4020 return -EOPNOTSUPP; 4021 break; 4022 case CFG80211_STA_AP_CLIENT: 4023 /* accept only the listed bits */ 4024 if (params->sta_flags_mask & 4025 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4026 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4027 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4028 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4029 BIT(NL80211_STA_FLAG_WME) | 4030 BIT(NL80211_STA_FLAG_MFP))) 4031 return -EINVAL; 4032 4033 /* but authenticated/associated only if driver handles it */ 4034 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4035 params->sta_flags_mask & 4036 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4037 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4038 return -EINVAL; 4039 break; 4040 case CFG80211_STA_IBSS: 4041 case CFG80211_STA_AP_STA: 4042 /* reject any changes other than AUTHORIZED */ 4043 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4044 return -EINVAL; 4045 break; 4046 case CFG80211_STA_TDLS_PEER_SETUP: 4047 /* reject any changes other than AUTHORIZED or WME */ 4048 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4049 BIT(NL80211_STA_FLAG_WME))) 4050 return -EINVAL; 4051 /* force (at least) rates when authorizing */ 4052 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4053 !params->supported_rates) 4054 return -EINVAL; 4055 break; 4056 case CFG80211_STA_TDLS_PEER_ACTIVE: 4057 /* reject any changes */ 4058 return -EINVAL; 4059 case CFG80211_STA_MESH_PEER_KERNEL: 4060 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4061 return -EINVAL; 4062 break; 4063 case CFG80211_STA_MESH_PEER_USER: 4064 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4065 return -EINVAL; 4066 break; 4067 } 4068 4069 return 0; 4070} 4071EXPORT_SYMBOL(cfg80211_check_station_change); 4072 4073/* 4074 * Get vlan interface making sure it is running and on the right wiphy. 4075 */ 4076static struct net_device *get_vlan(struct genl_info *info, 4077 struct cfg80211_registered_device *rdev) 4078{ 4079 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4080 struct net_device *v; 4081 int ret; 4082 4083 if (!vlanattr) 4084 return NULL; 4085 4086 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4087 if (!v) 4088 return ERR_PTR(-ENODEV); 4089 4090 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4091 ret = -EINVAL; 4092 goto error; 4093 } 4094 4095 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4096 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4097 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4098 ret = -EINVAL; 4099 goto error; 4100 } 4101 4102 if (!netif_running(v)) { 4103 ret = -ENETDOWN; 4104 goto error; 4105 } 4106 4107 return v; 4108 error: 4109 dev_put(v); 4110 return ERR_PTR(ret); 4111} 4112 4113static const struct nla_policy 4114nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4115 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4116 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4117}; 4118 4119static int nl80211_parse_sta_wme(struct genl_info *info, 4120 struct station_parameters *params) 4121{ 4122 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4123 struct nlattr *nla; 4124 int err; 4125 4126 /* parse WME attributes if present */ 4127 if (!info->attrs[NL80211_ATTR_STA_WME]) 4128 return 0; 4129 4130 nla = info->attrs[NL80211_ATTR_STA_WME]; 4131 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4132 nl80211_sta_wme_policy); 4133 if (err) 4134 return err; 4135 4136 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4137 params->uapsd_queues = nla_get_u8( 4138 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4139 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4140 return -EINVAL; 4141 4142 if (tb[NL80211_STA_WME_MAX_SP]) 4143 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4144 4145 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4146 return -EINVAL; 4147 4148 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4149 4150 return 0; 4151} 4152 4153static int nl80211_parse_sta_channel_info(struct genl_info *info, 4154 struct station_parameters *params) 4155{ 4156 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4157 params->supported_channels = 4158 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4159 params->supported_channels_len = 4160 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4161 /* 4162 * Need to include at least one (first channel, number of 4163 * channels) tuple for each subband, and must have proper 4164 * tuples for the rest of the data as well. 4165 */ 4166 if (params->supported_channels_len < 2) 4167 return -EINVAL; 4168 if (params->supported_channels_len % 2) 4169 return -EINVAL; 4170 } 4171 4172 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4173 params->supported_oper_classes = 4174 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4175 params->supported_oper_classes_len = 4176 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4177 /* 4178 * The value of the Length field of the Supported Operating 4179 * Classes element is between 2 and 253. 4180 */ 4181 if (params->supported_oper_classes_len < 2 || 4182 params->supported_oper_classes_len > 253) 4183 return -EINVAL; 4184 } 4185 return 0; 4186} 4187 4188static int nl80211_set_station_tdls(struct genl_info *info, 4189 struct station_parameters *params) 4190{ 4191 int err; 4192 /* Dummy STA entry gets updated once the peer capabilities are known */ 4193 if (info->attrs[NL80211_ATTR_PEER_AID]) 4194 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4196 params->ht_capa = 4197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4198 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4199 params->vht_capa = 4200 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4201 4202 err = nl80211_parse_sta_channel_info(info, params); 4203 if (err) 4204 return err; 4205 4206 return nl80211_parse_sta_wme(info, params); 4207} 4208 4209static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4210{ 4211 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4212 struct net_device *dev = info->user_ptr[1]; 4213 struct station_parameters params; 4214 u8 *mac_addr; 4215 int err; 4216 4217 memset(¶ms, 0, sizeof(params)); 4218 4219 params.listen_interval = -1; 4220 4221 if (!rdev->ops->change_station) 4222 return -EOPNOTSUPP; 4223 4224 if (info->attrs[NL80211_ATTR_STA_AID]) 4225 return -EINVAL; 4226 4227 if (!info->attrs[NL80211_ATTR_MAC]) 4228 return -EINVAL; 4229 4230 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4231 4232 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4233 params.supported_rates = 4234 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4235 params.supported_rates_len = 4236 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4237 } 4238 4239 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4240 params.capability = 4241 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4242 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4243 } 4244 4245 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4246 params.ext_capab = 4247 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4248 params.ext_capab_len = 4249 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4250 } 4251 4252 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4253 return -EINVAL; 4254 4255 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4256 return -EINVAL; 4257 4258 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4259 params.plink_action = 4260 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4261 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4262 return -EINVAL; 4263 } 4264 4265 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4266 params.plink_state = 4267 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4268 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4269 return -EINVAL; 4270 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4271 } 4272 4273 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4274 enum nl80211_mesh_power_mode pm = nla_get_u32( 4275 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4276 4277 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4278 pm > NL80211_MESH_POWER_MAX) 4279 return -EINVAL; 4280 4281 params.local_pm = pm; 4282 } 4283 4284 /* Include parameters for TDLS peer (will check later) */ 4285 err = nl80211_set_station_tdls(info, ¶ms); 4286 if (err) 4287 return err; 4288 4289 params.vlan = get_vlan(info, rdev); 4290 if (IS_ERR(params.vlan)) 4291 return PTR_ERR(params.vlan); 4292 4293 switch (dev->ieee80211_ptr->iftype) { 4294 case NL80211_IFTYPE_AP: 4295 case NL80211_IFTYPE_AP_VLAN: 4296 case NL80211_IFTYPE_P2P_GO: 4297 case NL80211_IFTYPE_P2P_CLIENT: 4298 case NL80211_IFTYPE_STATION: 4299 case NL80211_IFTYPE_ADHOC: 4300 case NL80211_IFTYPE_MESH_POINT: 4301 break; 4302 default: 4303 err = -EOPNOTSUPP; 4304 goto out_put_vlan; 4305 } 4306 4307 /* driver will call cfg80211_check_station_change() */ 4308 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4309 4310 out_put_vlan: 4311 if (params.vlan) 4312 dev_put(params.vlan); 4313 4314 return err; 4315} 4316 4317static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4318{ 4319 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4320 int err; 4321 struct net_device *dev = info->user_ptr[1]; 4322 struct station_parameters params; 4323 u8 *mac_addr = NULL; 4324 4325 memset(¶ms, 0, sizeof(params)); 4326 4327 if (!rdev->ops->add_station) 4328 return -EOPNOTSUPP; 4329 4330 if (!info->attrs[NL80211_ATTR_MAC]) 4331 return -EINVAL; 4332 4333 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4334 return -EINVAL; 4335 4336 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4337 return -EINVAL; 4338 4339 if (!info->attrs[NL80211_ATTR_STA_AID] && 4340 !info->attrs[NL80211_ATTR_PEER_AID]) 4341 return -EINVAL; 4342 4343 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4344 params.supported_rates = 4345 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4346 params.supported_rates_len = 4347 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4348 params.listen_interval = 4349 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4350 4351 if (info->attrs[NL80211_ATTR_PEER_AID]) 4352 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4353 else 4354 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4355 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4356 return -EINVAL; 4357 4358 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4359 params.capability = 4360 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4361 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4362 } 4363 4364 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4365 params.ext_capab = 4366 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4367 params.ext_capab_len = 4368 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4369 } 4370 4371 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4372 params.ht_capa = 4373 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4374 4375 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4376 params.vht_capa = 4377 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4378 4379 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4380 params.opmode_notif_used = true; 4381 params.opmode_notif = 4382 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4383 } 4384 4385 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4386 params.plink_action = 4387 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4388 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4389 return -EINVAL; 4390 } 4391 4392 err = nl80211_parse_sta_channel_info(info, ¶ms); 4393 if (err) 4394 return err; 4395 4396 err = nl80211_parse_sta_wme(info, ¶ms); 4397 if (err) 4398 return err; 4399 4400 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4401 return -EINVAL; 4402 4403 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 4404 * as userspace might just pass through the capabilities from the IEs 4405 * directly, rather than enforcing this restriction and returning an 4406 * error in this case. 4407 */ 4408 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 4409 params.ht_capa = NULL; 4410 params.vht_capa = NULL; 4411 } 4412 4413 /* When you run into this, adjust the code below for the new flag */ 4414 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4415 4416 switch (dev->ieee80211_ptr->iftype) { 4417 case NL80211_IFTYPE_AP: 4418 case NL80211_IFTYPE_AP_VLAN: 4419 case NL80211_IFTYPE_P2P_GO: 4420 /* ignore WME attributes if iface/sta is not capable */ 4421 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4422 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4423 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4424 4425 /* TDLS peers cannot be added */ 4426 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4427 info->attrs[NL80211_ATTR_PEER_AID]) 4428 return -EINVAL; 4429 /* but don't bother the driver with it */ 4430 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4431 4432 /* allow authenticated/associated only if driver handles it */ 4433 if (!(rdev->wiphy.features & 4434 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4435 params.sta_flags_mask & 4436 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4437 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4438 return -EINVAL; 4439 4440 /* must be last in here for error handling */ 4441 params.vlan = get_vlan(info, rdev); 4442 if (IS_ERR(params.vlan)) 4443 return PTR_ERR(params.vlan); 4444 break; 4445 case NL80211_IFTYPE_MESH_POINT: 4446 /* ignore uAPSD data */ 4447 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4448 4449 /* associated is disallowed */ 4450 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4451 return -EINVAL; 4452 /* TDLS peers cannot be added */ 4453 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4454 info->attrs[NL80211_ATTR_PEER_AID]) 4455 return -EINVAL; 4456 break; 4457 case NL80211_IFTYPE_STATION: 4458 case NL80211_IFTYPE_P2P_CLIENT: 4459 /* ignore uAPSD data */ 4460 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4461 4462 /* these are disallowed */ 4463 if (params.sta_flags_mask & 4464 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4465 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4466 return -EINVAL; 4467 /* Only TDLS peers can be added */ 4468 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4469 return -EINVAL; 4470 /* Can only add if TDLS ... */ 4471 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4472 return -EOPNOTSUPP; 4473 /* ... with external setup is supported */ 4474 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4475 return -EOPNOTSUPP; 4476 /* 4477 * Older wpa_supplicant versions always mark the TDLS peer 4478 * as authorized, but it shouldn't yet be. 4479 */ 4480 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4481 break; 4482 default: 4483 return -EOPNOTSUPP; 4484 } 4485 4486 /* be aware of params.vlan when changing code here */ 4487 4488 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4489 4490 if (params.vlan) 4491 dev_put(params.vlan); 4492 return err; 4493} 4494 4495static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4496{ 4497 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4498 struct net_device *dev = info->user_ptr[1]; 4499 struct station_del_parameters params; 4500 4501 memset(¶ms, 0, sizeof(params)); 4502 4503 if (info->attrs[NL80211_ATTR_MAC]) 4504 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 4505 4506 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4507 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4508 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4509 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4510 return -EINVAL; 4511 4512 if (!rdev->ops->del_station) 4513 return -EOPNOTSUPP; 4514 4515 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 4516 params.subtype = 4517 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 4518 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 4519 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 4520 return -EINVAL; 4521 } else { 4522 /* Default to Deauthentication frame */ 4523 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 4524 } 4525 4526 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 4527 params.reason_code = 4528 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4529 if (params.reason_code == 0) 4530 return -EINVAL; /* 0 is reserved */ 4531 } else { 4532 /* Default to reason code 2 */ 4533 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 4534 } 4535 4536 return rdev_del_station(rdev, dev, ¶ms); 4537} 4538 4539static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4540 int flags, struct net_device *dev, 4541 u8 *dst, u8 *next_hop, 4542 struct mpath_info *pinfo) 4543{ 4544 void *hdr; 4545 struct nlattr *pinfoattr; 4546 4547 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 4548 if (!hdr) 4549 return -1; 4550 4551 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4552 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4553 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4554 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4555 goto nla_put_failure; 4556 4557 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4558 if (!pinfoattr) 4559 goto nla_put_failure; 4560 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4561 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4562 pinfo->frame_qlen)) 4563 goto nla_put_failure; 4564 if (((pinfo->filled & MPATH_INFO_SN) && 4565 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4566 ((pinfo->filled & MPATH_INFO_METRIC) && 4567 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4568 pinfo->metric)) || 4569 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4570 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4571 pinfo->exptime)) || 4572 ((pinfo->filled & MPATH_INFO_FLAGS) && 4573 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4574 pinfo->flags)) || 4575 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4576 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4577 pinfo->discovery_timeout)) || 4578 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4579 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4580 pinfo->discovery_retries))) 4581 goto nla_put_failure; 4582 4583 nla_nest_end(msg, pinfoattr); 4584 4585 genlmsg_end(msg, hdr); 4586 return 0; 4587 4588 nla_put_failure: 4589 genlmsg_cancel(msg, hdr); 4590 return -EMSGSIZE; 4591} 4592 4593static int nl80211_dump_mpath(struct sk_buff *skb, 4594 struct netlink_callback *cb) 4595{ 4596 struct mpath_info pinfo; 4597 struct cfg80211_registered_device *rdev; 4598 struct wireless_dev *wdev; 4599 u8 dst[ETH_ALEN]; 4600 u8 next_hop[ETH_ALEN]; 4601 int path_idx = cb->args[2]; 4602 int err; 4603 4604 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4605 if (err) 4606 return err; 4607 4608 if (!rdev->ops->dump_mpath) { 4609 err = -EOPNOTSUPP; 4610 goto out_err; 4611 } 4612 4613 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4614 err = -EOPNOTSUPP; 4615 goto out_err; 4616 } 4617 4618 while (1) { 4619 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 4620 next_hop, &pinfo); 4621 if (err == -ENOENT) 4622 break; 4623 if (err) 4624 goto out_err; 4625 4626 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4627 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4628 wdev->netdev, dst, next_hop, 4629 &pinfo) < 0) 4630 goto out; 4631 4632 path_idx++; 4633 } 4634 4635 4636 out: 4637 cb->args[2] = path_idx; 4638 err = skb->len; 4639 out_err: 4640 nl80211_finish_wdev_dump(rdev); 4641 return err; 4642} 4643 4644static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4645{ 4646 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4647 int err; 4648 struct net_device *dev = info->user_ptr[1]; 4649 struct mpath_info pinfo; 4650 struct sk_buff *msg; 4651 u8 *dst = NULL; 4652 u8 next_hop[ETH_ALEN]; 4653 4654 memset(&pinfo, 0, sizeof(pinfo)); 4655 4656 if (!info->attrs[NL80211_ATTR_MAC]) 4657 return -EINVAL; 4658 4659 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4660 4661 if (!rdev->ops->get_mpath) 4662 return -EOPNOTSUPP; 4663 4664 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4665 return -EOPNOTSUPP; 4666 4667 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4668 if (err) 4669 return err; 4670 4671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4672 if (!msg) 4673 return -ENOMEM; 4674 4675 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4676 dev, dst, next_hop, &pinfo) < 0) { 4677 nlmsg_free(msg); 4678 return -ENOBUFS; 4679 } 4680 4681 return genlmsg_reply(msg, info); 4682} 4683 4684static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4685{ 4686 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4687 struct net_device *dev = info->user_ptr[1]; 4688 u8 *dst = NULL; 4689 u8 *next_hop = NULL; 4690 4691 if (!info->attrs[NL80211_ATTR_MAC]) 4692 return -EINVAL; 4693 4694 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4695 return -EINVAL; 4696 4697 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4698 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4699 4700 if (!rdev->ops->change_mpath) 4701 return -EOPNOTSUPP; 4702 4703 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4704 return -EOPNOTSUPP; 4705 4706 return rdev_change_mpath(rdev, dev, dst, next_hop); 4707} 4708 4709static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4710{ 4711 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4712 struct net_device *dev = info->user_ptr[1]; 4713 u8 *dst = NULL; 4714 u8 *next_hop = NULL; 4715 4716 if (!info->attrs[NL80211_ATTR_MAC]) 4717 return -EINVAL; 4718 4719 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4720 return -EINVAL; 4721 4722 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4723 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4724 4725 if (!rdev->ops->add_mpath) 4726 return -EOPNOTSUPP; 4727 4728 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4729 return -EOPNOTSUPP; 4730 4731 return rdev_add_mpath(rdev, dev, dst, next_hop); 4732} 4733 4734static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4735{ 4736 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4737 struct net_device *dev = info->user_ptr[1]; 4738 u8 *dst = NULL; 4739 4740 if (info->attrs[NL80211_ATTR_MAC]) 4741 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4742 4743 if (!rdev->ops->del_mpath) 4744 return -EOPNOTSUPP; 4745 4746 return rdev_del_mpath(rdev, dev, dst); 4747} 4748 4749static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 4750{ 4751 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4752 int err; 4753 struct net_device *dev = info->user_ptr[1]; 4754 struct mpath_info pinfo; 4755 struct sk_buff *msg; 4756 u8 *dst = NULL; 4757 u8 mpp[ETH_ALEN]; 4758 4759 memset(&pinfo, 0, sizeof(pinfo)); 4760 4761 if (!info->attrs[NL80211_ATTR_MAC]) 4762 return -EINVAL; 4763 4764 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4765 4766 if (!rdev->ops->get_mpp) 4767 return -EOPNOTSUPP; 4768 4769 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4770 return -EOPNOTSUPP; 4771 4772 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 4773 if (err) 4774 return err; 4775 4776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4777 if (!msg) 4778 return -ENOMEM; 4779 4780 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4781 dev, dst, mpp, &pinfo) < 0) { 4782 nlmsg_free(msg); 4783 return -ENOBUFS; 4784 } 4785 4786 return genlmsg_reply(msg, info); 4787} 4788 4789static int nl80211_dump_mpp(struct sk_buff *skb, 4790 struct netlink_callback *cb) 4791{ 4792 struct mpath_info pinfo; 4793 struct cfg80211_registered_device *rdev; 4794 struct wireless_dev *wdev; 4795 u8 dst[ETH_ALEN]; 4796 u8 mpp[ETH_ALEN]; 4797 int path_idx = cb->args[2]; 4798 int err; 4799 4800 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4801 if (err) 4802 return err; 4803 4804 if (!rdev->ops->dump_mpp) { 4805 err = -EOPNOTSUPP; 4806 goto out_err; 4807 } 4808 4809 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4810 err = -EOPNOTSUPP; 4811 goto out_err; 4812 } 4813 4814 while (1) { 4815 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 4816 mpp, &pinfo); 4817 if (err == -ENOENT) 4818 break; 4819 if (err) 4820 goto out_err; 4821 4822 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4823 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4824 wdev->netdev, dst, mpp, 4825 &pinfo) < 0) 4826 goto out; 4827 4828 path_idx++; 4829 } 4830 4831 out: 4832 cb->args[2] = path_idx; 4833 err = skb->len; 4834 out_err: 4835 nl80211_finish_wdev_dump(rdev); 4836 return err; 4837} 4838 4839static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4840{ 4841 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4842 struct net_device *dev = info->user_ptr[1]; 4843 struct wireless_dev *wdev = dev->ieee80211_ptr; 4844 struct bss_parameters params; 4845 int err; 4846 4847 memset(¶ms, 0, sizeof(params)); 4848 /* default to not changing parameters */ 4849 params.use_cts_prot = -1; 4850 params.use_short_preamble = -1; 4851 params.use_short_slot_time = -1; 4852 params.ap_isolate = -1; 4853 params.ht_opmode = -1; 4854 params.p2p_ctwindow = -1; 4855 params.p2p_opp_ps = -1; 4856 4857 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4858 params.use_cts_prot = 4859 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4860 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4861 params.use_short_preamble = 4862 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4863 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4864 params.use_short_slot_time = 4865 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4866 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4867 params.basic_rates = 4868 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4869 params.basic_rates_len = 4870 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4871 } 4872 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4873 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4874 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4875 params.ht_opmode = 4876 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4877 4878 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4880 return -EINVAL; 4881 params.p2p_ctwindow = 4882 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4883 if (params.p2p_ctwindow < 0) 4884 return -EINVAL; 4885 if (params.p2p_ctwindow != 0 && 4886 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4887 return -EINVAL; 4888 } 4889 4890 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4891 u8 tmp; 4892 4893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4894 return -EINVAL; 4895 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4896 if (tmp > 1) 4897 return -EINVAL; 4898 params.p2p_opp_ps = tmp; 4899 if (params.p2p_opp_ps && 4900 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4901 return -EINVAL; 4902 } 4903 4904 if (!rdev->ops->change_bss) 4905 return -EOPNOTSUPP; 4906 4907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4908 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4909 return -EOPNOTSUPP; 4910 4911 wdev_lock(wdev); 4912 err = rdev_change_bss(rdev, dev, ¶ms); 4913 wdev_unlock(wdev); 4914 4915 return err; 4916} 4917 4918static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4919 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4920 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4921 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4922 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4923 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4924 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4925 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 4926}; 4927 4928static int parse_reg_rule(struct nlattr *tb[], 4929 struct ieee80211_reg_rule *reg_rule) 4930{ 4931 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4932 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4933 4934 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4935 return -EINVAL; 4936 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4937 return -EINVAL; 4938 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4939 return -EINVAL; 4940 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4941 return -EINVAL; 4942 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4943 return -EINVAL; 4944 4945 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4946 4947 freq_range->start_freq_khz = 4948 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4949 freq_range->end_freq_khz = 4950 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4951 freq_range->max_bandwidth_khz = 4952 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4953 4954 power_rule->max_eirp = 4955 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4956 4957 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4958 power_rule->max_antenna_gain = 4959 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4960 4961 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 4962 reg_rule->dfs_cac_ms = 4963 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 4964 4965 return 0; 4966} 4967 4968static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4969{ 4970 char *data = NULL; 4971 bool is_indoor; 4972 enum nl80211_user_reg_hint_type user_reg_hint_type; 4973 u32 owner_nlportid; 4974 4975 4976 /* 4977 * You should only get this when cfg80211 hasn't yet initialized 4978 * completely when built-in to the kernel right between the time 4979 * window between nl80211_init() and regulatory_init(), if that is 4980 * even possible. 4981 */ 4982 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4983 return -EINPROGRESS; 4984 4985 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4986 user_reg_hint_type = 4987 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4988 else 4989 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4990 4991 switch (user_reg_hint_type) { 4992 case NL80211_USER_REG_HINT_USER: 4993 case NL80211_USER_REG_HINT_CELL_BASE: 4994 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4995 return -EINVAL; 4996 4997 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4998 return regulatory_hint_user(data, user_reg_hint_type); 4999 case NL80211_USER_REG_HINT_INDOOR: 5000 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 5001 owner_nlportid = info->snd_portid; 5002 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 5003 } else { 5004 owner_nlportid = 0; 5005 is_indoor = true; 5006 } 5007 5008 return regulatory_hint_indoor(is_indoor, owner_nlportid); 5009 default: 5010 return -EINVAL; 5011 } 5012} 5013 5014static int nl80211_get_mesh_config(struct sk_buff *skb, 5015 struct genl_info *info) 5016{ 5017 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5018 struct net_device *dev = info->user_ptr[1]; 5019 struct wireless_dev *wdev = dev->ieee80211_ptr; 5020 struct mesh_config cur_params; 5021 int err = 0; 5022 void *hdr; 5023 struct nlattr *pinfoattr; 5024 struct sk_buff *msg; 5025 5026 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5027 return -EOPNOTSUPP; 5028 5029 if (!rdev->ops->get_mesh_config) 5030 return -EOPNOTSUPP; 5031 5032 wdev_lock(wdev); 5033 /* If not connected, get default parameters */ 5034 if (!wdev->mesh_id_len) 5035 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5036 else 5037 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5038 wdev_unlock(wdev); 5039 5040 if (err) 5041 return err; 5042 5043 /* Draw up a netlink message to send back */ 5044 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5045 if (!msg) 5046 return -ENOMEM; 5047 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5048 NL80211_CMD_GET_MESH_CONFIG); 5049 if (!hdr) 5050 goto out; 5051 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5052 if (!pinfoattr) 5053 goto nla_put_failure; 5054 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5055 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5056 cur_params.dot11MeshRetryTimeout) || 5057 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5058 cur_params.dot11MeshConfirmTimeout) || 5059 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5060 cur_params.dot11MeshHoldingTimeout) || 5061 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5062 cur_params.dot11MeshMaxPeerLinks) || 5063 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5064 cur_params.dot11MeshMaxRetries) || 5065 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5066 cur_params.dot11MeshTTL) || 5067 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5068 cur_params.element_ttl) || 5069 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5070 cur_params.auto_open_plinks) || 5071 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5072 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5073 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5074 cur_params.dot11MeshHWMPmaxPREQretries) || 5075 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5076 cur_params.path_refresh_time) || 5077 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5078 cur_params.min_discovery_timeout) || 5079 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5080 cur_params.dot11MeshHWMPactivePathTimeout) || 5081 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5082 cur_params.dot11MeshHWMPpreqMinInterval) || 5083 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5084 cur_params.dot11MeshHWMPperrMinInterval) || 5085 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5086 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5087 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5088 cur_params.dot11MeshHWMPRootMode) || 5089 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5090 cur_params.dot11MeshHWMPRannInterval) || 5091 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5092 cur_params.dot11MeshGateAnnouncementProtocol) || 5093 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5094 cur_params.dot11MeshForwarding) || 5095 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5096 cur_params.rssi_threshold) || 5097 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5098 cur_params.ht_opmode) || 5099 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5100 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5101 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5102 cur_params.dot11MeshHWMProotInterval) || 5103 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5104 cur_params.dot11MeshHWMPconfirmationInterval) || 5105 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5106 cur_params.power_mode) || 5107 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5108 cur_params.dot11MeshAwakeWindowDuration) || 5109 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5110 cur_params.plink_timeout)) 5111 goto nla_put_failure; 5112 nla_nest_end(msg, pinfoattr); 5113 genlmsg_end(msg, hdr); 5114 return genlmsg_reply(msg, info); 5115 5116 nla_put_failure: 5117 genlmsg_cancel(msg, hdr); 5118 out: 5119 nlmsg_free(msg); 5120 return -ENOBUFS; 5121} 5122 5123static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5124 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5125 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5126 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5127 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5128 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5129 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5130 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5131 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5132 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5133 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5134 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5135 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5136 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5137 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5138 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5139 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5140 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5141 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5142 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5143 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5144 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5145 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5146 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5147 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5148 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5149 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5150 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5151 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5152}; 5153 5154static const struct nla_policy 5155 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5156 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5157 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5158 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5159 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5160 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5161 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5162 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5163 .len = IEEE80211_MAX_DATA_LEN }, 5164 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5165}; 5166 5167static int nl80211_parse_mesh_config(struct genl_info *info, 5168 struct mesh_config *cfg, 5169 u32 *mask_out) 5170{ 5171 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5172 u32 mask = 0; 5173 5174#define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5175do { \ 5176 if (tb[attr]) { \ 5177 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 5178 return -EINVAL; \ 5179 cfg->param = fn(tb[attr]); \ 5180 mask |= (1 << (attr - 1)); \ 5181 } \ 5182} while (0) 5183 5184 5185 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5186 return -EINVAL; 5187 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5188 info->attrs[NL80211_ATTR_MESH_CONFIG], 5189 nl80211_meshconf_params_policy)) 5190 return -EINVAL; 5191 5192 /* This makes sure that there aren't more than 32 mesh config 5193 * parameters (otherwise our bitfield scheme would not work.) */ 5194 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5195 5196 /* Fill in the params struct */ 5197 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5198 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5199 nla_get_u16); 5200 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5201 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5202 nla_get_u16); 5203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5204 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5205 nla_get_u16); 5206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5207 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5208 nla_get_u16); 5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5210 mask, NL80211_MESHCONF_MAX_RETRIES, 5211 nla_get_u8); 5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5213 mask, NL80211_MESHCONF_TTL, nla_get_u8); 5214 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5215 mask, NL80211_MESHCONF_ELEMENT_TTL, 5216 nla_get_u8); 5217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5218 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5219 nla_get_u8); 5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5221 1, 255, mask, 5222 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5223 nla_get_u32); 5224 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5225 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5226 nla_get_u8); 5227 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5228 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5229 nla_get_u32); 5230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5231 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5232 nla_get_u16); 5233 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5234 1, 65535, mask, 5235 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5236 nla_get_u32); 5237 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5238 1, 65535, mask, 5239 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5240 nla_get_u16); 5241 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5242 1, 65535, mask, 5243 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5244 nla_get_u16); 5245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5246 dot11MeshHWMPnetDiameterTraversalTime, 5247 1, 65535, mask, 5248 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5249 nla_get_u16); 5250 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5251 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5252 nla_get_u8); 5253 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5254 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5255 nla_get_u16); 5256 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5257 dot11MeshGateAnnouncementProtocol, 0, 1, 5258 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5259 nla_get_u8); 5260 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5261 mask, NL80211_MESHCONF_FORWARDING, 5262 nla_get_u8); 5263 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5264 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5265 nla_get_s32); 5266 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 5267 mask, NL80211_MESHCONF_HT_OPMODE, 5268 nla_get_u16); 5269 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5270 1, 65535, mask, 5271 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5272 nla_get_u32); 5273 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5274 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5275 nla_get_u16); 5276 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5277 dot11MeshHWMPconfirmationInterval, 5278 1, 65535, mask, 5279 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5280 nla_get_u16); 5281 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5282 NL80211_MESH_POWER_ACTIVE, 5283 NL80211_MESH_POWER_MAX, 5284 mask, NL80211_MESHCONF_POWER_MODE, 5285 nla_get_u32); 5286 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5287 0, 65535, mask, 5288 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 5289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 5290 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5291 nla_get_u32); 5292 if (mask_out) 5293 *mask_out = mask; 5294 5295 return 0; 5296 5297#undef FILL_IN_MESH_PARAM_IF_SET 5298} 5299 5300static int nl80211_parse_mesh_setup(struct genl_info *info, 5301 struct mesh_setup *setup) 5302{ 5303 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5304 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5305 5306 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5307 return -EINVAL; 5308 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5309 info->attrs[NL80211_ATTR_MESH_SETUP], 5310 nl80211_mesh_setup_params_policy)) 5311 return -EINVAL; 5312 5313 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5314 setup->sync_method = 5315 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5316 IEEE80211_SYNC_METHOD_VENDOR : 5317 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5318 5319 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5320 setup->path_sel_proto = 5321 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5322 IEEE80211_PATH_PROTOCOL_VENDOR : 5323 IEEE80211_PATH_PROTOCOL_HWMP; 5324 5325 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5326 setup->path_metric = 5327 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5328 IEEE80211_PATH_METRIC_VENDOR : 5329 IEEE80211_PATH_METRIC_AIRTIME; 5330 5331 5332 if (tb[NL80211_MESH_SETUP_IE]) { 5333 struct nlattr *ieattr = 5334 tb[NL80211_MESH_SETUP_IE]; 5335 if (!is_valid_ie_attr(ieattr)) 5336 return -EINVAL; 5337 setup->ie = nla_data(ieattr); 5338 setup->ie_len = nla_len(ieattr); 5339 } 5340 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5341 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5342 return -EINVAL; 5343 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5344 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5345 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5346 if (setup->is_secure) 5347 setup->user_mpm = true; 5348 5349 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5350 if (!setup->user_mpm) 5351 return -EINVAL; 5352 setup->auth_id = 5353 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5354 } 5355 5356 return 0; 5357} 5358 5359static int nl80211_update_mesh_config(struct sk_buff *skb, 5360 struct genl_info *info) 5361{ 5362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5363 struct net_device *dev = info->user_ptr[1]; 5364 struct wireless_dev *wdev = dev->ieee80211_ptr; 5365 struct mesh_config cfg; 5366 u32 mask; 5367 int err; 5368 5369 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5370 return -EOPNOTSUPP; 5371 5372 if (!rdev->ops->update_mesh_config) 5373 return -EOPNOTSUPP; 5374 5375 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5376 if (err) 5377 return err; 5378 5379 wdev_lock(wdev); 5380 if (!wdev->mesh_id_len) 5381 err = -ENOLINK; 5382 5383 if (!err) 5384 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5385 5386 wdev_unlock(wdev); 5387 5388 return err; 5389} 5390 5391static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 5392 struct sk_buff *msg) 5393{ 5394 struct nlattr *nl_reg_rules; 5395 unsigned int i; 5396 5397 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5398 (regdom->dfs_region && 5399 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5400 goto nla_put_failure; 5401 5402 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5403 if (!nl_reg_rules) 5404 goto nla_put_failure; 5405 5406 for (i = 0; i < regdom->n_reg_rules; i++) { 5407 struct nlattr *nl_reg_rule; 5408 const struct ieee80211_reg_rule *reg_rule; 5409 const struct ieee80211_freq_range *freq_range; 5410 const struct ieee80211_power_rule *power_rule; 5411 unsigned int max_bandwidth_khz; 5412 5413 reg_rule = ®dom->reg_rules[i]; 5414 freq_range = ®_rule->freq_range; 5415 power_rule = ®_rule->power_rule; 5416 5417 nl_reg_rule = nla_nest_start(msg, i); 5418 if (!nl_reg_rule) 5419 goto nla_put_failure; 5420 5421 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5422 if (!max_bandwidth_khz) 5423 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5424 reg_rule); 5425 5426 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5427 reg_rule->flags) || 5428 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5429 freq_range->start_freq_khz) || 5430 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5431 freq_range->end_freq_khz) || 5432 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5433 max_bandwidth_khz) || 5434 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5435 power_rule->max_antenna_gain) || 5436 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5437 power_rule->max_eirp) || 5438 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5439 reg_rule->dfs_cac_ms)) 5440 goto nla_put_failure; 5441 5442 nla_nest_end(msg, nl_reg_rule); 5443 } 5444 5445 nla_nest_end(msg, nl_reg_rules); 5446 return 0; 5447 5448nla_put_failure: 5449 return -EMSGSIZE; 5450} 5451 5452static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 5453{ 5454 const struct ieee80211_regdomain *regdom = NULL; 5455 struct cfg80211_registered_device *rdev; 5456 struct wiphy *wiphy = NULL; 5457 struct sk_buff *msg; 5458 void *hdr; 5459 5460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5461 if (!msg) 5462 return -ENOBUFS; 5463 5464 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5465 NL80211_CMD_GET_REG); 5466 if (!hdr) 5467 goto put_failure; 5468 5469 if (info->attrs[NL80211_ATTR_WIPHY]) { 5470 bool self_managed; 5471 5472 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 5473 if (IS_ERR(rdev)) { 5474 nlmsg_free(msg); 5475 return PTR_ERR(rdev); 5476 } 5477 5478 wiphy = &rdev->wiphy; 5479 self_managed = wiphy->regulatory_flags & 5480 REGULATORY_WIPHY_SELF_MANAGED; 5481 regdom = get_wiphy_regdom(wiphy); 5482 5483 /* a self-managed-reg device must have a private regdom */ 5484 if (WARN_ON(!regdom && self_managed)) { 5485 nlmsg_free(msg); 5486 return -EINVAL; 5487 } 5488 5489 if (regdom && 5490 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5491 goto nla_put_failure; 5492 } 5493 5494 if (!wiphy && reg_last_request_cell_base() && 5495 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5496 NL80211_USER_REG_HINT_CELL_BASE)) 5497 goto nla_put_failure; 5498 5499 rcu_read_lock(); 5500 5501 if (!regdom) 5502 regdom = rcu_dereference(cfg80211_regdomain); 5503 5504 if (nl80211_put_regdom(regdom, msg)) 5505 goto nla_put_failure_rcu; 5506 5507 rcu_read_unlock(); 5508 5509 genlmsg_end(msg, hdr); 5510 return genlmsg_reply(msg, info); 5511 5512nla_put_failure_rcu: 5513 rcu_read_unlock(); 5514nla_put_failure: 5515 genlmsg_cancel(msg, hdr); 5516put_failure: 5517 nlmsg_free(msg); 5518 return -EMSGSIZE; 5519} 5520 5521static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 5522 u32 seq, int flags, struct wiphy *wiphy, 5523 const struct ieee80211_regdomain *regdom) 5524{ 5525 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5526 NL80211_CMD_GET_REG); 5527 5528 if (!hdr) 5529 return -1; 5530 5531 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5532 5533 if (nl80211_put_regdom(regdom, msg)) 5534 goto nla_put_failure; 5535 5536 if (!wiphy && reg_last_request_cell_base() && 5537 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5538 NL80211_USER_REG_HINT_CELL_BASE)) 5539 goto nla_put_failure; 5540 5541 if (wiphy && 5542 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5543 goto nla_put_failure; 5544 5545 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 5546 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 5547 goto nla_put_failure; 5548 5549 genlmsg_end(msg, hdr); 5550 return 0; 5551 5552nla_put_failure: 5553 genlmsg_cancel(msg, hdr); 5554 return -EMSGSIZE; 5555} 5556 5557static int nl80211_get_reg_dump(struct sk_buff *skb, 5558 struct netlink_callback *cb) 5559{ 5560 const struct ieee80211_regdomain *regdom = NULL; 5561 struct cfg80211_registered_device *rdev; 5562 int err, reg_idx, start = cb->args[2]; 5563 5564 rtnl_lock(); 5565 5566 if (cfg80211_regdomain && start == 0) { 5567 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5568 NLM_F_MULTI, NULL, 5569 rtnl_dereference(cfg80211_regdomain)); 5570 if (err < 0) 5571 goto out_err; 5572 } 5573 5574 /* the global regdom is idx 0 */ 5575 reg_idx = 1; 5576 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 5577 regdom = get_wiphy_regdom(&rdev->wiphy); 5578 if (!regdom) 5579 continue; 5580 5581 if (++reg_idx <= start) 5582 continue; 5583 5584 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5585 NLM_F_MULTI, &rdev->wiphy, regdom); 5586 if (err < 0) { 5587 reg_idx--; 5588 break; 5589 } 5590 } 5591 5592 cb->args[2] = reg_idx; 5593 err = skb->len; 5594out_err: 5595 rtnl_unlock(); 5596 return err; 5597} 5598 5599static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5600{ 5601 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5602 struct nlattr *nl_reg_rule; 5603 char *alpha2; 5604 int rem_reg_rules, r; 5605 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5606 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5607 struct ieee80211_regdomain *rd; 5608 5609 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5610 return -EINVAL; 5611 5612 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5613 return -EINVAL; 5614 5615 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5616 5617 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5618 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5619 5620 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5621 rem_reg_rules) { 5622 num_rules++; 5623 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5624 return -EINVAL; 5625 } 5626 5627 if (!reg_is_valid_request(alpha2)) 5628 return -EINVAL; 5629 5630 size_of_regd = sizeof(struct ieee80211_regdomain) + 5631 num_rules * sizeof(struct ieee80211_reg_rule); 5632 5633 rd = kzalloc(size_of_regd, GFP_KERNEL); 5634 if (!rd) 5635 return -ENOMEM; 5636 5637 rd->n_reg_rules = num_rules; 5638 rd->alpha2[0] = alpha2[0]; 5639 rd->alpha2[1] = alpha2[1]; 5640 5641 /* 5642 * Disable DFS master mode if the DFS region was 5643 * not supported or known on this kernel. 5644 */ 5645 if (reg_supported_dfs_region(dfs_region)) 5646 rd->dfs_region = dfs_region; 5647 5648 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5649 rem_reg_rules) { 5650 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5651 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5652 reg_rule_policy); 5653 if (r) 5654 goto bad_reg; 5655 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5656 if (r) 5657 goto bad_reg; 5658 5659 rule_idx++; 5660 5661 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5662 r = -EINVAL; 5663 goto bad_reg; 5664 } 5665 } 5666 5667 r = set_regdom(rd, REGD_SOURCE_CRDA); 5668 /* set_regdom took ownership */ 5669 rd = NULL; 5670 5671 bad_reg: 5672 kfree(rd); 5673 return r; 5674} 5675 5676static int validate_scan_freqs(struct nlattr *freqs) 5677{ 5678 struct nlattr *attr1, *attr2; 5679 int n_channels = 0, tmp1, tmp2; 5680 5681 nla_for_each_nested(attr1, freqs, tmp1) { 5682 n_channels++; 5683 /* 5684 * Some hardware has a limited channel list for 5685 * scanning, and it is pretty much nonsensical 5686 * to scan for a channel twice, so disallow that 5687 * and don't require drivers to check that the 5688 * channel list they get isn't longer than what 5689 * they can scan, as long as they can scan all 5690 * the channels they registered at once. 5691 */ 5692 nla_for_each_nested(attr2, freqs, tmp2) 5693 if (attr1 != attr2 && 5694 nla_get_u32(attr1) == nla_get_u32(attr2)) 5695 return 0; 5696 } 5697 5698 return n_channels; 5699} 5700 5701static int nl80211_parse_random_mac(struct nlattr **attrs, 5702 u8 *mac_addr, u8 *mac_addr_mask) 5703{ 5704 int i; 5705 5706 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 5707 eth_zero_addr(mac_addr); 5708 eth_zero_addr(mac_addr_mask); 5709 mac_addr[0] = 0x2; 5710 mac_addr_mask[0] = 0x3; 5711 5712 return 0; 5713 } 5714 5715 /* need both or none */ 5716 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 5717 return -EINVAL; 5718 5719 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 5720 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 5721 5722 /* don't allow or configure an mcast address */ 5723 if (!is_multicast_ether_addr(mac_addr_mask) || 5724 is_multicast_ether_addr(mac_addr)) 5725 return -EINVAL; 5726 5727 /* 5728 * allow users to pass a MAC address that has bits set outside 5729 * of the mask, but don't bother drivers with having to deal 5730 * with such bits 5731 */ 5732 for (i = 0; i < ETH_ALEN; i++) 5733 mac_addr[i] &= mac_addr_mask[i]; 5734 5735 return 0; 5736} 5737 5738static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5739{ 5740 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5741 struct wireless_dev *wdev = info->user_ptr[1]; 5742 struct cfg80211_scan_request *request; 5743 struct nlattr *attr; 5744 struct wiphy *wiphy; 5745 int err, tmp, n_ssids = 0, n_channels, i; 5746 size_t ie_len; 5747 5748 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5749 return -EINVAL; 5750 5751 wiphy = &rdev->wiphy; 5752 5753 if (!rdev->ops->scan) 5754 return -EOPNOTSUPP; 5755 5756 if (rdev->scan_req || rdev->scan_msg) { 5757 err = -EBUSY; 5758 goto unlock; 5759 } 5760 5761 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5762 n_channels = validate_scan_freqs( 5763 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5764 if (!n_channels) { 5765 err = -EINVAL; 5766 goto unlock; 5767 } 5768 } else { 5769 n_channels = ieee80211_get_num_supported_channels(wiphy); 5770 } 5771 5772 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5773 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5774 n_ssids++; 5775 5776 if (n_ssids > wiphy->max_scan_ssids) { 5777 err = -EINVAL; 5778 goto unlock; 5779 } 5780 5781 if (info->attrs[NL80211_ATTR_IE]) 5782 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5783 else 5784 ie_len = 0; 5785 5786 if (ie_len > wiphy->max_scan_ie_len) { 5787 err = -EINVAL; 5788 goto unlock; 5789 } 5790 5791 request = kzalloc(sizeof(*request) 5792 + sizeof(*request->ssids) * n_ssids 5793 + sizeof(*request->channels) * n_channels 5794 + ie_len, GFP_KERNEL); 5795 if (!request) { 5796 err = -ENOMEM; 5797 goto unlock; 5798 } 5799 5800 if (n_ssids) 5801 request->ssids = (void *)&request->channels[n_channels]; 5802 request->n_ssids = n_ssids; 5803 if (ie_len) { 5804 if (n_ssids) 5805 request->ie = (void *)(request->ssids + n_ssids); 5806 else 5807 request->ie = (void *)(request->channels + n_channels); 5808 } 5809 5810 i = 0; 5811 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5812 /* user specified, bail out if channel not found */ 5813 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5814 struct ieee80211_channel *chan; 5815 5816 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5817 5818 if (!chan) { 5819 err = -EINVAL; 5820 goto out_free; 5821 } 5822 5823 /* ignore disabled channels */ 5824 if (chan->flags & IEEE80211_CHAN_DISABLED) 5825 continue; 5826 5827 request->channels[i] = chan; 5828 i++; 5829 } 5830 } else { 5831 enum ieee80211_band band; 5832 5833 /* all channels */ 5834 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5835 int j; 5836 if (!wiphy->bands[band]) 5837 continue; 5838 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5839 struct ieee80211_channel *chan; 5840 5841 chan = &wiphy->bands[band]->channels[j]; 5842 5843 if (chan->flags & IEEE80211_CHAN_DISABLED) 5844 continue; 5845 5846 request->channels[i] = chan; 5847 i++; 5848 } 5849 } 5850 } 5851 5852 if (!i) { 5853 err = -EINVAL; 5854 goto out_free; 5855 } 5856 5857 request->n_channels = i; 5858 5859 i = 0; 5860 if (n_ssids) { 5861 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5862 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5863 err = -EINVAL; 5864 goto out_free; 5865 } 5866 request->ssids[i].ssid_len = nla_len(attr); 5867 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5868 i++; 5869 } 5870 } 5871 5872 if (info->attrs[NL80211_ATTR_IE]) { 5873 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5874 memcpy((void *)request->ie, 5875 nla_data(info->attrs[NL80211_ATTR_IE]), 5876 request->ie_len); 5877 } 5878 5879 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5880 if (wiphy->bands[i]) 5881 request->rates[i] = 5882 (1 << wiphy->bands[i]->n_bitrates) - 1; 5883 5884 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5885 nla_for_each_nested(attr, 5886 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5887 tmp) { 5888 enum ieee80211_band band = nla_type(attr); 5889 5890 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5891 err = -EINVAL; 5892 goto out_free; 5893 } 5894 5895 if (!wiphy->bands[band]) 5896 continue; 5897 5898 err = ieee80211_get_ratemask(wiphy->bands[band], 5899 nla_data(attr), 5900 nla_len(attr), 5901 &request->rates[band]); 5902 if (err) 5903 goto out_free; 5904 } 5905 } 5906 5907 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5908 request->flags = nla_get_u32( 5909 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5910 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5911 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5912 err = -EOPNOTSUPP; 5913 goto out_free; 5914 } 5915 5916 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 5917 if (!(wiphy->features & 5918 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 5919 err = -EOPNOTSUPP; 5920 goto out_free; 5921 } 5922 5923 if (wdev->current_bss) { 5924 err = -EOPNOTSUPP; 5925 goto out_free; 5926 } 5927 5928 err = nl80211_parse_random_mac(info->attrs, 5929 request->mac_addr, 5930 request->mac_addr_mask); 5931 if (err) 5932 goto out_free; 5933 } 5934 } 5935 5936 request->no_cck = 5937 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5938 5939 request->wdev = wdev; 5940 request->wiphy = &rdev->wiphy; 5941 request->scan_start = jiffies; 5942 5943 rdev->scan_req = request; 5944 err = rdev_scan(rdev, request); 5945 5946 if (!err) { 5947 nl80211_send_scan_start(rdev, wdev); 5948 if (wdev->netdev) 5949 dev_hold(wdev->netdev); 5950 } else { 5951 out_free: 5952 rdev->scan_req = NULL; 5953 kfree(request); 5954 } 5955 5956 unlock: 5957 return err; 5958} 5959 5960static struct cfg80211_sched_scan_request * 5961nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 5962 struct nlattr **attrs) 5963{ 5964 struct cfg80211_sched_scan_request *request; 5965 struct nlattr *attr; 5966 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5967 u32 interval; 5968 enum ieee80211_band band; 5969 size_t ie_len; 5970 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5971 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 5972 5973 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 5974 return ERR_PTR(-EINVAL); 5975 5976 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5977 return ERR_PTR(-EINVAL); 5978 5979 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5980 if (interval == 0) 5981 return ERR_PTR(-EINVAL); 5982 5983 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5984 n_channels = validate_scan_freqs( 5985 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5986 if (!n_channels) 5987 return ERR_PTR(-EINVAL); 5988 } else { 5989 n_channels = ieee80211_get_num_supported_channels(wiphy); 5990 } 5991 5992 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 5993 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 5994 tmp) 5995 n_ssids++; 5996 5997 if (n_ssids > wiphy->max_sched_scan_ssids) 5998 return ERR_PTR(-EINVAL); 5999 6000 /* 6001 * First, count the number of 'real' matchsets. Due to an issue with 6002 * the old implementation, matchsets containing only the RSSI attribute 6003 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 6004 * RSSI for all matchsets, rather than their own matchset for reporting 6005 * all APs with a strong RSSI. This is needed to be compatible with 6006 * older userspace that treated a matchset with only the RSSI as the 6007 * global RSSI for all other matchsets - if there are other matchsets. 6008 */ 6009 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6010 nla_for_each_nested(attr, 6011 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6012 tmp) { 6013 struct nlattr *rssi; 6014 6015 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6016 nla_data(attr), nla_len(attr), 6017 nl80211_match_policy); 6018 if (err) 6019 return ERR_PTR(err); 6020 /* add other standalone attributes here */ 6021 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 6022 n_match_sets++; 6023 continue; 6024 } 6025 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6026 if (rssi) 6027 default_match_rssi = nla_get_s32(rssi); 6028 } 6029 } 6030 6031 /* However, if there's no other matchset, add the RSSI one */ 6032 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 6033 n_match_sets = 1; 6034 6035 if (n_match_sets > wiphy->max_match_sets) 6036 return ERR_PTR(-EINVAL); 6037 6038 if (attrs[NL80211_ATTR_IE]) 6039 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 6040 else 6041 ie_len = 0; 6042 6043 if (ie_len > wiphy->max_sched_scan_ie_len) 6044 return ERR_PTR(-EINVAL); 6045 6046 request = kzalloc(sizeof(*request) 6047 + sizeof(*request->ssids) * n_ssids 6048 + sizeof(*request->match_sets) * n_match_sets 6049 + sizeof(*request->channels) * n_channels 6050 + ie_len, GFP_KERNEL); 6051 if (!request) 6052 return ERR_PTR(-ENOMEM); 6053 6054 if (n_ssids) 6055 request->ssids = (void *)&request->channels[n_channels]; 6056 request->n_ssids = n_ssids; 6057 if (ie_len) { 6058 if (n_ssids) 6059 request->ie = (void *)(request->ssids + n_ssids); 6060 else 6061 request->ie = (void *)(request->channels + n_channels); 6062 } 6063 6064 if (n_match_sets) { 6065 if (request->ie) 6066 request->match_sets = (void *)(request->ie + ie_len); 6067 else if (n_ssids) 6068 request->match_sets = 6069 (void *)(request->ssids + n_ssids); 6070 else 6071 request->match_sets = 6072 (void *)(request->channels + n_channels); 6073 } 6074 request->n_match_sets = n_match_sets; 6075 6076 i = 0; 6077 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6078 /* user specified, bail out if channel not found */ 6079 nla_for_each_nested(attr, 6080 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 6081 tmp) { 6082 struct ieee80211_channel *chan; 6083 6084 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6085 6086 if (!chan) { 6087 err = -EINVAL; 6088 goto out_free; 6089 } 6090 6091 /* ignore disabled channels */ 6092 if (chan->flags & IEEE80211_CHAN_DISABLED) 6093 continue; 6094 6095 request->channels[i] = chan; 6096 i++; 6097 } 6098 } else { 6099 /* all channels */ 6100 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6101 int j; 6102 if (!wiphy->bands[band]) 6103 continue; 6104 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6105 struct ieee80211_channel *chan; 6106 6107 chan = &wiphy->bands[band]->channels[j]; 6108 6109 if (chan->flags & IEEE80211_CHAN_DISABLED) 6110 continue; 6111 6112 request->channels[i] = chan; 6113 i++; 6114 } 6115 } 6116 } 6117 6118 if (!i) { 6119 err = -EINVAL; 6120 goto out_free; 6121 } 6122 6123 request->n_channels = i; 6124 6125 i = 0; 6126 if (n_ssids) { 6127 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6128 tmp) { 6129 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6130 err = -EINVAL; 6131 goto out_free; 6132 } 6133 request->ssids[i].ssid_len = nla_len(attr); 6134 memcpy(request->ssids[i].ssid, nla_data(attr), 6135 nla_len(attr)); 6136 i++; 6137 } 6138 } 6139 6140 i = 0; 6141 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6142 nla_for_each_nested(attr, 6143 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6144 tmp) { 6145 struct nlattr *ssid, *rssi; 6146 6147 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6148 nla_data(attr), nla_len(attr), 6149 nl80211_match_policy); 6150 if (err) 6151 goto out_free; 6152 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 6153 if (ssid) { 6154 if (WARN_ON(i >= n_match_sets)) { 6155 /* this indicates a programming error, 6156 * the loop above should have verified 6157 * things properly 6158 */ 6159 err = -EINVAL; 6160 goto out_free; 6161 } 6162 6163 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 6164 err = -EINVAL; 6165 goto out_free; 6166 } 6167 memcpy(request->match_sets[i].ssid.ssid, 6168 nla_data(ssid), nla_len(ssid)); 6169 request->match_sets[i].ssid.ssid_len = 6170 nla_len(ssid); 6171 /* special attribute - old implemenation w/a */ 6172 request->match_sets[i].rssi_thold = 6173 default_match_rssi; 6174 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6175 if (rssi) 6176 request->match_sets[i].rssi_thold = 6177 nla_get_s32(rssi); 6178 } 6179 i++; 6180 } 6181 6182 /* there was no other matchset, so the RSSI one is alone */ 6183 if (i == 0 && n_match_sets) 6184 request->match_sets[0].rssi_thold = default_match_rssi; 6185 6186 request->min_rssi_thold = INT_MAX; 6187 for (i = 0; i < n_match_sets; i++) 6188 request->min_rssi_thold = 6189 min(request->match_sets[i].rssi_thold, 6190 request->min_rssi_thold); 6191 } else { 6192 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6193 } 6194 6195 if (ie_len) { 6196 request->ie_len = ie_len; 6197 memcpy((void *)request->ie, 6198 nla_data(attrs[NL80211_ATTR_IE]), 6199 request->ie_len); 6200 } 6201 6202 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6203 request->flags = nla_get_u32( 6204 attrs[NL80211_ATTR_SCAN_FLAGS]); 6205 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6206 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6207 err = -EOPNOTSUPP; 6208 goto out_free; 6209 } 6210 6211 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6212 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6213 6214 if (!wdev) /* must be net-detect */ 6215 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6216 6217 if (!(wiphy->features & flg)) { 6218 err = -EOPNOTSUPP; 6219 goto out_free; 6220 } 6221 6222 if (wdev && wdev->current_bss) { 6223 err = -EOPNOTSUPP; 6224 goto out_free; 6225 } 6226 6227 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6228 request->mac_addr_mask); 6229 if (err) 6230 goto out_free; 6231 } 6232 } 6233 6234 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 6235 request->delay = 6236 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 6237 6238 request->interval = interval; 6239 request->scan_start = jiffies; 6240 6241 return request; 6242 6243out_free: 6244 kfree(request); 6245 return ERR_PTR(err); 6246} 6247 6248static int nl80211_start_sched_scan(struct sk_buff *skb, 6249 struct genl_info *info) 6250{ 6251 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6252 struct net_device *dev = info->user_ptr[1]; 6253 struct wireless_dev *wdev = dev->ieee80211_ptr; 6254 struct cfg80211_sched_scan_request *sched_scan_req; 6255 int err; 6256 6257 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6258 !rdev->ops->sched_scan_start) 6259 return -EOPNOTSUPP; 6260 6261 if (rdev->sched_scan_req) 6262 return -EINPROGRESS; 6263 6264 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6265 info->attrs); 6266 6267 err = PTR_ERR_OR_ZERO(sched_scan_req); 6268 if (err) 6269 goto out_err; 6270 6271 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 6272 if (err) 6273 goto out_free; 6274 6275 sched_scan_req->dev = dev; 6276 sched_scan_req->wiphy = &rdev->wiphy; 6277 6278 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6279 sched_scan_req->owner_nlportid = info->snd_portid; 6280 6281 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); 6282 6283 nl80211_send_sched_scan(rdev, dev, 6284 NL80211_CMD_START_SCHED_SCAN); 6285 return 0; 6286 6287out_free: 6288 kfree(sched_scan_req); 6289out_err: 6290 return err; 6291} 6292 6293static int nl80211_stop_sched_scan(struct sk_buff *skb, 6294 struct genl_info *info) 6295{ 6296 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6297 6298 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6299 !rdev->ops->sched_scan_stop) 6300 return -EOPNOTSUPP; 6301 6302 return __cfg80211_stop_sched_scan(rdev, false); 6303} 6304 6305static int nl80211_start_radar_detection(struct sk_buff *skb, 6306 struct genl_info *info) 6307{ 6308 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6309 struct net_device *dev = info->user_ptr[1]; 6310 struct wireless_dev *wdev = dev->ieee80211_ptr; 6311 struct cfg80211_chan_def chandef; 6312 enum nl80211_dfs_regions dfs_region; 6313 unsigned int cac_time_ms; 6314 int err; 6315 6316 dfs_region = reg_get_dfs_region(wdev->wiphy); 6317 if (dfs_region == NL80211_DFS_UNSET) 6318 return -EINVAL; 6319 6320 err = nl80211_parse_chandef(rdev, info, &chandef); 6321 if (err) 6322 return err; 6323 6324 if (netif_carrier_ok(dev)) 6325 return -EBUSY; 6326 6327 if (wdev->cac_started) 6328 return -EBUSY; 6329 6330 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6331 wdev->iftype); 6332 if (err < 0) 6333 return err; 6334 6335 if (err == 0) 6336 return -EINVAL; 6337 6338 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6339 return -EINVAL; 6340 6341 if (!rdev->ops->start_radar_detection) 6342 return -EOPNOTSUPP; 6343 6344 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6345 if (WARN_ON(!cac_time_ms)) 6346 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6347 6348 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef, 6349 cac_time_ms); 6350 if (!err) { 6351 wdev->chandef = chandef; 6352 wdev->cac_started = true; 6353 wdev->cac_start_time = jiffies; 6354 wdev->cac_time_ms = cac_time_ms; 6355 } 6356 return err; 6357} 6358 6359static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6360{ 6361 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6362 struct net_device *dev = info->user_ptr[1]; 6363 struct wireless_dev *wdev = dev->ieee80211_ptr; 6364 struct cfg80211_csa_settings params; 6365 /* csa_attrs is defined static to avoid waste of stack size - this 6366 * function is called under RTNL lock, so this should not be a problem. 6367 */ 6368 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6369 int err; 6370 bool need_new_beacon = false; 6371 int len, i; 6372 u32 cs_count; 6373 6374 if (!rdev->ops->channel_switch || 6375 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6376 return -EOPNOTSUPP; 6377 6378 switch (dev->ieee80211_ptr->iftype) { 6379 case NL80211_IFTYPE_AP: 6380 case NL80211_IFTYPE_P2P_GO: 6381 need_new_beacon = true; 6382 6383 /* useless if AP is not running */ 6384 if (!wdev->beacon_interval) 6385 return -ENOTCONN; 6386 break; 6387 case NL80211_IFTYPE_ADHOC: 6388 if (!wdev->ssid_len) 6389 return -ENOTCONN; 6390 break; 6391 case NL80211_IFTYPE_MESH_POINT: 6392 if (!wdev->mesh_id_len) 6393 return -ENOTCONN; 6394 break; 6395 default: 6396 return -EOPNOTSUPP; 6397 } 6398 6399 memset(¶ms, 0, sizeof(params)); 6400 6401 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6402 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6403 return -EINVAL; 6404 6405 /* only important for AP, IBSS and mesh create IEs internally */ 6406 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6407 return -EINVAL; 6408 6409 /* Even though the attribute is u32, the specification says 6410 * u8, so let's make sure we don't overflow. 6411 */ 6412 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6413 if (cs_count > 255) 6414 return -EINVAL; 6415 6416 params.count = cs_count; 6417 6418 if (!need_new_beacon) 6419 goto skip_beacons; 6420 6421 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6422 if (err) 6423 return err; 6424 6425 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6426 info->attrs[NL80211_ATTR_CSA_IES], 6427 nl80211_policy); 6428 if (err) 6429 return err; 6430 6431 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6432 if (err) 6433 return err; 6434 6435 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6436 return -EINVAL; 6437 6438 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6439 if (!len || (len % sizeof(u16))) 6440 return -EINVAL; 6441 6442 params.n_counter_offsets_beacon = len / sizeof(u16); 6443 if (rdev->wiphy.max_num_csa_counters && 6444 (params.n_counter_offsets_beacon > 6445 rdev->wiphy.max_num_csa_counters)) 6446 return -EINVAL; 6447 6448 params.counter_offsets_beacon = 6449 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6450 6451 /* sanity checks - counters should fit and be the same */ 6452 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6453 u16 offset = params.counter_offsets_beacon[i]; 6454 6455 if (offset >= params.beacon_csa.tail_len) 6456 return -EINVAL; 6457 6458 if (params.beacon_csa.tail[offset] != params.count) 6459 return -EINVAL; 6460 } 6461 6462 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6463 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6464 if (!len || (len % sizeof(u16))) 6465 return -EINVAL; 6466 6467 params.n_counter_offsets_presp = len / sizeof(u16); 6468 if (rdev->wiphy.max_num_csa_counters && 6469 (params.n_counter_offsets_beacon > 6470 rdev->wiphy.max_num_csa_counters)) 6471 return -EINVAL; 6472 6473 params.counter_offsets_presp = 6474 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6475 6476 /* sanity checks - counters should fit and be the same */ 6477 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6478 u16 offset = params.counter_offsets_presp[i]; 6479 6480 if (offset >= params.beacon_csa.probe_resp_len) 6481 return -EINVAL; 6482 6483 if (params.beacon_csa.probe_resp[offset] != 6484 params.count) 6485 return -EINVAL; 6486 } 6487 } 6488 6489skip_beacons: 6490 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 6491 if (err) 6492 return err; 6493 6494 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 6495 wdev->iftype)) 6496 return -EINVAL; 6497 6498 err = cfg80211_chandef_dfs_required(wdev->wiphy, 6499 ¶ms.chandef, 6500 wdev->iftype); 6501 if (err < 0) 6502 return err; 6503 6504 if (err > 0) 6505 params.radar_required = true; 6506 6507 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 6508 params.block_tx = true; 6509 6510 wdev_lock(wdev); 6511 err = rdev_channel_switch(rdev, dev, ¶ms); 6512 wdev_unlock(wdev); 6513 6514 return err; 6515} 6516 6517static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 6518 u32 seq, int flags, 6519 struct cfg80211_registered_device *rdev, 6520 struct wireless_dev *wdev, 6521 struct cfg80211_internal_bss *intbss) 6522{ 6523 struct cfg80211_bss *res = &intbss->pub; 6524 const struct cfg80211_bss_ies *ies; 6525 void *hdr; 6526 struct nlattr *bss; 6527 6528 ASSERT_WDEV_LOCK(wdev); 6529 6530 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6531 NL80211_CMD_NEW_SCAN_RESULTS); 6532 if (!hdr) 6533 return -1; 6534 6535 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 6536 6537 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 6538 goto nla_put_failure; 6539 if (wdev->netdev && 6540 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 6541 goto nla_put_failure; 6542 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 6543 goto nla_put_failure; 6544 6545 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 6546 if (!bss) 6547 goto nla_put_failure; 6548 if ((!is_zero_ether_addr(res->bssid) && 6549 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 6550 goto nla_put_failure; 6551 6552 rcu_read_lock(); 6553 /* indicate whether we have probe response data or not */ 6554 if (rcu_access_pointer(res->proberesp_ies) && 6555 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 6556 goto fail_unlock_rcu; 6557 6558 /* this pointer prefers to be pointed to probe response data 6559 * but is always valid 6560 */ 6561 ies = rcu_dereference(res->ies); 6562 if (ies) { 6563 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 6564 goto fail_unlock_rcu; 6565 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 6566 ies->len, ies->data)) 6567 goto fail_unlock_rcu; 6568 } 6569 6570 /* and this pointer is always (unless driver didn't know) beacon data */ 6571 ies = rcu_dereference(res->beacon_ies); 6572 if (ies && ies->from_beacon) { 6573 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf)) 6574 goto fail_unlock_rcu; 6575 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 6576 ies->len, ies->data)) 6577 goto fail_unlock_rcu; 6578 } 6579 rcu_read_unlock(); 6580 6581 if (res->beacon_interval && 6582 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 6583 goto nla_put_failure; 6584 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 6585 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 6586 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 6587 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 6588 jiffies_to_msecs(jiffies - intbss->ts))) 6589 goto nla_put_failure; 6590 6591 switch (rdev->wiphy.signal_type) { 6592 case CFG80211_SIGNAL_TYPE_MBM: 6593 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 6594 goto nla_put_failure; 6595 break; 6596 case CFG80211_SIGNAL_TYPE_UNSPEC: 6597 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 6598 goto nla_put_failure; 6599 break; 6600 default: 6601 break; 6602 } 6603 6604 switch (wdev->iftype) { 6605 case NL80211_IFTYPE_P2P_CLIENT: 6606 case NL80211_IFTYPE_STATION: 6607 if (intbss == wdev->current_bss && 6608 nla_put_u32(msg, NL80211_BSS_STATUS, 6609 NL80211_BSS_STATUS_ASSOCIATED)) 6610 goto nla_put_failure; 6611 break; 6612 case NL80211_IFTYPE_ADHOC: 6613 if (intbss == wdev->current_bss && 6614 nla_put_u32(msg, NL80211_BSS_STATUS, 6615 NL80211_BSS_STATUS_IBSS_JOINED)) 6616 goto nla_put_failure; 6617 break; 6618 default: 6619 break; 6620 } 6621 6622 nla_nest_end(msg, bss); 6623 6624 genlmsg_end(msg, hdr); 6625 return 0; 6626 6627 fail_unlock_rcu: 6628 rcu_read_unlock(); 6629 nla_put_failure: 6630 genlmsg_cancel(msg, hdr); 6631 return -EMSGSIZE; 6632} 6633 6634static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 6635{ 6636 struct cfg80211_registered_device *rdev; 6637 struct cfg80211_internal_bss *scan; 6638 struct wireless_dev *wdev; 6639 int start = cb->args[2], idx = 0; 6640 int err; 6641 6642 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6643 if (err) 6644 return err; 6645 6646 wdev_lock(wdev); 6647 spin_lock_bh(&rdev->bss_lock); 6648 cfg80211_bss_expire(rdev); 6649 6650 cb->seq = rdev->bss_generation; 6651 6652 list_for_each_entry(scan, &rdev->bss_list, list) { 6653 if (++idx <= start) 6654 continue; 6655 if (nl80211_send_bss(skb, cb, 6656 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6657 rdev, wdev, scan) < 0) { 6658 idx--; 6659 break; 6660 } 6661 } 6662 6663 spin_unlock_bh(&rdev->bss_lock); 6664 wdev_unlock(wdev); 6665 6666 cb->args[2] = idx; 6667 nl80211_finish_wdev_dump(rdev); 6668 6669 return skb->len; 6670} 6671 6672static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 6673 int flags, struct net_device *dev, 6674 bool allow_radio_stats, 6675 struct survey_info *survey) 6676{ 6677 void *hdr; 6678 struct nlattr *infoattr; 6679 6680 /* skip radio stats if userspace didn't request them */ 6681 if (!survey->channel && !allow_radio_stats) 6682 return 0; 6683 6684 hdr = nl80211hdr_put(msg, portid, seq, flags, 6685 NL80211_CMD_NEW_SURVEY_RESULTS); 6686 if (!hdr) 6687 return -ENOMEM; 6688 6689 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 6690 goto nla_put_failure; 6691 6692 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 6693 if (!infoattr) 6694 goto nla_put_failure; 6695 6696 if (survey->channel && 6697 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 6698 survey->channel->center_freq)) 6699 goto nla_put_failure; 6700 6701 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 6702 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 6703 goto nla_put_failure; 6704 if ((survey->filled & SURVEY_INFO_IN_USE) && 6705 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 6706 goto nla_put_failure; 6707 if ((survey->filled & SURVEY_INFO_TIME) && 6708 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME, 6709 survey->time)) 6710 goto nla_put_failure; 6711 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 6712 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY, 6713 survey->time_busy)) 6714 goto nla_put_failure; 6715 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 6716 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 6717 survey->time_ext_busy)) 6718 goto nla_put_failure; 6719 if ((survey->filled & SURVEY_INFO_TIME_RX) && 6720 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX, 6721 survey->time_rx)) 6722 goto nla_put_failure; 6723 if ((survey->filled & SURVEY_INFO_TIME_TX) && 6724 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX, 6725 survey->time_tx)) 6726 goto nla_put_failure; 6727 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 6728 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN, 6729 survey->time_scan)) 6730 goto nla_put_failure; 6731 6732 nla_nest_end(msg, infoattr); 6733 6734 genlmsg_end(msg, hdr); 6735 return 0; 6736 6737 nla_put_failure: 6738 genlmsg_cancel(msg, hdr); 6739 return -EMSGSIZE; 6740} 6741 6742static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 6743{ 6744 struct survey_info survey; 6745 struct cfg80211_registered_device *rdev; 6746 struct wireless_dev *wdev; 6747 int survey_idx = cb->args[2]; 6748 int res; 6749 bool radio_stats; 6750 6751 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6752 if (res) 6753 return res; 6754 6755 /* prepare_wdev_dump parsed the attributes */ 6756 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 6757 6758 if (!wdev->netdev) { 6759 res = -EINVAL; 6760 goto out_err; 6761 } 6762 6763 if (!rdev->ops->dump_survey) { 6764 res = -EOPNOTSUPP; 6765 goto out_err; 6766 } 6767 6768 while (1) { 6769 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 6770 if (res == -ENOENT) 6771 break; 6772 if (res) 6773 goto out_err; 6774 6775 /* don't send disabled channels, but do send non-channel data */ 6776 if (survey.channel && 6777 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 6778 survey_idx++; 6779 continue; 6780 } 6781 6782 if (nl80211_send_survey(skb, 6783 NETLINK_CB(cb->skb).portid, 6784 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6785 wdev->netdev, radio_stats, &survey) < 0) 6786 goto out; 6787 survey_idx++; 6788 } 6789 6790 out: 6791 cb->args[2] = survey_idx; 6792 res = skb->len; 6793 out_err: 6794 nl80211_finish_wdev_dump(rdev); 6795 return res; 6796} 6797 6798static bool nl80211_valid_wpa_versions(u32 wpa_versions) 6799{ 6800 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 6801 NL80211_WPA_VERSION_2)); 6802} 6803 6804static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6805{ 6806 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6807 struct net_device *dev = info->user_ptr[1]; 6808 struct ieee80211_channel *chan; 6809 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6810 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6811 enum nl80211_auth_type auth_type; 6812 struct key_parse key; 6813 bool local_state_change; 6814 6815 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6816 return -EINVAL; 6817 6818 if (!info->attrs[NL80211_ATTR_MAC]) 6819 return -EINVAL; 6820 6821 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6822 return -EINVAL; 6823 6824 if (!info->attrs[NL80211_ATTR_SSID]) 6825 return -EINVAL; 6826 6827 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6828 return -EINVAL; 6829 6830 err = nl80211_parse_key(info, &key); 6831 if (err) 6832 return err; 6833 6834 if (key.idx >= 0) { 6835 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6836 return -EINVAL; 6837 if (!key.p.key || !key.p.key_len) 6838 return -EINVAL; 6839 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6840 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6841 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6842 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6843 return -EINVAL; 6844 if (key.idx > 4) 6845 return -EINVAL; 6846 } else { 6847 key.p.key_len = 0; 6848 key.p.key = NULL; 6849 } 6850 6851 if (key.idx >= 0) { 6852 int i; 6853 bool ok = false; 6854 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6855 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6856 ok = true; 6857 break; 6858 } 6859 } 6860 if (!ok) 6861 return -EINVAL; 6862 } 6863 6864 if (!rdev->ops->auth) 6865 return -EOPNOTSUPP; 6866 6867 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6868 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6869 return -EOPNOTSUPP; 6870 6871 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6872 chan = nl80211_get_valid_chan(&rdev->wiphy, 6873 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 6874 if (!chan) 6875 return -EINVAL; 6876 6877 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6878 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6879 6880 if (info->attrs[NL80211_ATTR_IE]) { 6881 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6882 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6883 } 6884 6885 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6886 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6887 return -EINVAL; 6888 6889 if (auth_type == NL80211_AUTHTYPE_SAE && 6890 !info->attrs[NL80211_ATTR_SAE_DATA]) 6891 return -EINVAL; 6892 6893 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6894 if (auth_type != NL80211_AUTHTYPE_SAE) 6895 return -EINVAL; 6896 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6897 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6898 /* need to include at least Auth Transaction and Status Code */ 6899 if (sae_data_len < 4) 6900 return -EINVAL; 6901 } 6902 6903 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6904 6905 /* 6906 * Since we no longer track auth state, ignore 6907 * requests to only change local state. 6908 */ 6909 if (local_state_change) 6910 return 0; 6911 6912 wdev_lock(dev->ieee80211_ptr); 6913 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6914 ssid, ssid_len, ie, ie_len, 6915 key.p.key, key.p.key_len, key.idx, 6916 sae_data, sae_data_len); 6917 wdev_unlock(dev->ieee80211_ptr); 6918 return err; 6919} 6920 6921static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6922 struct genl_info *info, 6923 struct cfg80211_crypto_settings *settings, 6924 int cipher_limit) 6925{ 6926 memset(settings, 0, sizeof(*settings)); 6927 6928 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6929 6930 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6931 u16 proto; 6932 proto = nla_get_u16( 6933 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6934 settings->control_port_ethertype = cpu_to_be16(proto); 6935 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6936 proto != ETH_P_PAE) 6937 return -EINVAL; 6938 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6939 settings->control_port_no_encrypt = true; 6940 } else 6941 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6942 6943 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6944 void *data; 6945 int len, i; 6946 6947 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6948 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6949 settings->n_ciphers_pairwise = len / sizeof(u32); 6950 6951 if (len % sizeof(u32)) 6952 return -EINVAL; 6953 6954 if (settings->n_ciphers_pairwise > cipher_limit) 6955 return -EINVAL; 6956 6957 memcpy(settings->ciphers_pairwise, data, len); 6958 6959 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6960 if (!cfg80211_supported_cipher_suite( 6961 &rdev->wiphy, 6962 settings->ciphers_pairwise[i])) 6963 return -EINVAL; 6964 } 6965 6966 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6967 settings->cipher_group = 6968 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6969 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6970 settings->cipher_group)) 6971 return -EINVAL; 6972 } 6973 6974 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6975 settings->wpa_versions = 6976 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6977 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6978 return -EINVAL; 6979 } 6980 6981 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6982 void *data; 6983 int len; 6984 6985 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6986 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6987 settings->n_akm_suites = len / sizeof(u32); 6988 6989 if (len % sizeof(u32)) 6990 return -EINVAL; 6991 6992 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6993 return -EINVAL; 6994 6995 memcpy(settings->akm_suites, data, len); 6996 } 6997 6998 return 0; 6999} 7000 7001static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 7002{ 7003 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7004 struct net_device *dev = info->user_ptr[1]; 7005 struct ieee80211_channel *chan; 7006 struct cfg80211_assoc_request req = {}; 7007 const u8 *bssid, *ssid; 7008 int err, ssid_len = 0; 7009 7010 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7011 return -EINVAL; 7012 7013 if (!info->attrs[NL80211_ATTR_MAC] || 7014 !info->attrs[NL80211_ATTR_SSID] || 7015 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7016 return -EINVAL; 7017 7018 if (!rdev->ops->assoc) 7019 return -EOPNOTSUPP; 7020 7021 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7022 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7023 return -EOPNOTSUPP; 7024 7025 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7026 7027 chan = nl80211_get_valid_chan(&rdev->wiphy, 7028 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7029 if (!chan) 7030 return -EINVAL; 7031 7032 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7033 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7034 7035 if (info->attrs[NL80211_ATTR_IE]) { 7036 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7037 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7038 } 7039 7040 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7041 enum nl80211_mfp mfp = 7042 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7043 if (mfp == NL80211_MFP_REQUIRED) 7044 req.use_mfp = true; 7045 else if (mfp != NL80211_MFP_NO) 7046 return -EINVAL; 7047 } 7048 7049 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 7050 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 7051 7052 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7053 req.flags |= ASSOC_REQ_DISABLE_HT; 7054 7055 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7056 memcpy(&req.ht_capa_mask, 7057 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7058 sizeof(req.ht_capa_mask)); 7059 7060 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7061 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7062 return -EINVAL; 7063 memcpy(&req.ht_capa, 7064 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7065 sizeof(req.ht_capa)); 7066 } 7067 7068 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7069 req.flags |= ASSOC_REQ_DISABLE_VHT; 7070 7071 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7072 memcpy(&req.vht_capa_mask, 7073 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7074 sizeof(req.vht_capa_mask)); 7075 7076 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7077 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7078 return -EINVAL; 7079 memcpy(&req.vht_capa, 7080 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7081 sizeof(req.vht_capa)); 7082 } 7083 7084 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7085 if (!(rdev->wiphy.features & 7086 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7087 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7088 return -EINVAL; 7089 req.flags |= ASSOC_REQ_USE_RRM; 7090 } 7091 7092 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 7093 if (!err) { 7094 wdev_lock(dev->ieee80211_ptr); 7095 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 7096 ssid, ssid_len, &req); 7097 wdev_unlock(dev->ieee80211_ptr); 7098 } 7099 7100 return err; 7101} 7102 7103static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 7104{ 7105 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7106 struct net_device *dev = info->user_ptr[1]; 7107 const u8 *ie = NULL, *bssid; 7108 int ie_len = 0, err; 7109 u16 reason_code; 7110 bool local_state_change; 7111 7112 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7113 return -EINVAL; 7114 7115 if (!info->attrs[NL80211_ATTR_MAC]) 7116 return -EINVAL; 7117 7118 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7119 return -EINVAL; 7120 7121 if (!rdev->ops->deauth) 7122 return -EOPNOTSUPP; 7123 7124 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7125 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7126 return -EOPNOTSUPP; 7127 7128 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7129 7130 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7131 if (reason_code == 0) { 7132 /* Reason Code 0 is reserved */ 7133 return -EINVAL; 7134 } 7135 7136 if (info->attrs[NL80211_ATTR_IE]) { 7137 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7138 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7139 } 7140 7141 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7142 7143 wdev_lock(dev->ieee80211_ptr); 7144 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 7145 local_state_change); 7146 wdev_unlock(dev->ieee80211_ptr); 7147 return err; 7148} 7149 7150static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 7151{ 7152 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7153 struct net_device *dev = info->user_ptr[1]; 7154 const u8 *ie = NULL, *bssid; 7155 int ie_len = 0, err; 7156 u16 reason_code; 7157 bool local_state_change; 7158 7159 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7160 return -EINVAL; 7161 7162 if (!info->attrs[NL80211_ATTR_MAC]) 7163 return -EINVAL; 7164 7165 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7166 return -EINVAL; 7167 7168 if (!rdev->ops->disassoc) 7169 return -EOPNOTSUPP; 7170 7171 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7172 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7173 return -EOPNOTSUPP; 7174 7175 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7176 7177 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7178 if (reason_code == 0) { 7179 /* Reason Code 0 is reserved */ 7180 return -EINVAL; 7181 } 7182 7183 if (info->attrs[NL80211_ATTR_IE]) { 7184 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7185 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7186 } 7187 7188 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7189 7190 wdev_lock(dev->ieee80211_ptr); 7191 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 7192 local_state_change); 7193 wdev_unlock(dev->ieee80211_ptr); 7194 return err; 7195} 7196 7197static bool 7198nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7199 int mcast_rate[IEEE80211_NUM_BANDS], 7200 int rateval) 7201{ 7202 struct wiphy *wiphy = &rdev->wiphy; 7203 bool found = false; 7204 int band, i; 7205 7206 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 7207 struct ieee80211_supported_band *sband; 7208 7209 sband = wiphy->bands[band]; 7210 if (!sband) 7211 continue; 7212 7213 for (i = 0; i < sband->n_bitrates; i++) { 7214 if (sband->bitrates[i].bitrate == rateval) { 7215 mcast_rate[band] = i + 1; 7216 found = true; 7217 break; 7218 } 7219 } 7220 } 7221 7222 return found; 7223} 7224 7225static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7226{ 7227 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7228 struct net_device *dev = info->user_ptr[1]; 7229 struct cfg80211_ibss_params ibss; 7230 struct wiphy *wiphy; 7231 struct cfg80211_cached_keys *connkeys = NULL; 7232 int err; 7233 7234 memset(&ibss, 0, sizeof(ibss)); 7235 7236 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7237 return -EINVAL; 7238 7239 if (!info->attrs[NL80211_ATTR_SSID] || 7240 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7241 return -EINVAL; 7242 7243 ibss.beacon_interval = 100; 7244 7245 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7246 ibss.beacon_interval = 7247 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7248 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7249 return -EINVAL; 7250 } 7251 7252 if (!rdev->ops->join_ibss) 7253 return -EOPNOTSUPP; 7254 7255 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7256 return -EOPNOTSUPP; 7257 7258 wiphy = &rdev->wiphy; 7259 7260 if (info->attrs[NL80211_ATTR_MAC]) { 7261 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7262 7263 if (!is_valid_ether_addr(ibss.bssid)) 7264 return -EINVAL; 7265 } 7266 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7267 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7268 7269 if (info->attrs[NL80211_ATTR_IE]) { 7270 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7271 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7272 } 7273 7274 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7275 if (err) 7276 return err; 7277 7278 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7279 NL80211_IFTYPE_ADHOC)) 7280 return -EINVAL; 7281 7282 switch (ibss.chandef.width) { 7283 case NL80211_CHAN_WIDTH_5: 7284 case NL80211_CHAN_WIDTH_10: 7285 case NL80211_CHAN_WIDTH_20_NOHT: 7286 break; 7287 case NL80211_CHAN_WIDTH_20: 7288 case NL80211_CHAN_WIDTH_40: 7289 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7290 return -EINVAL; 7291 break; 7292 case NL80211_CHAN_WIDTH_80: 7293 case NL80211_CHAN_WIDTH_80P80: 7294 case NL80211_CHAN_WIDTH_160: 7295 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7296 return -EINVAL; 7297 if (!wiphy_ext_feature_isset(&rdev->wiphy, 7298 NL80211_EXT_FEATURE_VHT_IBSS)) 7299 return -EINVAL; 7300 break; 7301 default: 7302 return -EINVAL; 7303 } 7304 7305 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7306 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7307 7308 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7309 u8 *rates = 7310 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7311 int n_rates = 7312 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7313 struct ieee80211_supported_band *sband = 7314 wiphy->bands[ibss.chandef.chan->band]; 7315 7316 err = ieee80211_get_ratemask(sband, rates, n_rates, 7317 &ibss.basic_rates); 7318 if (err) 7319 return err; 7320 } 7321 7322 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7323 memcpy(&ibss.ht_capa_mask, 7324 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7325 sizeof(ibss.ht_capa_mask)); 7326 7327 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7328 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7329 return -EINVAL; 7330 memcpy(&ibss.ht_capa, 7331 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7332 sizeof(ibss.ht_capa)); 7333 } 7334 7335 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7336 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7337 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7338 return -EINVAL; 7339 7340 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7341 bool no_ht = false; 7342 7343 connkeys = nl80211_parse_connkeys(rdev, 7344 info->attrs[NL80211_ATTR_KEYS], 7345 &no_ht); 7346 if (IS_ERR(connkeys)) 7347 return PTR_ERR(connkeys); 7348 7349 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7350 no_ht) { 7351 kfree(connkeys); 7352 return -EINVAL; 7353 } 7354 } 7355 7356 ibss.control_port = 7357 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7358 7359 ibss.userspace_handles_dfs = 7360 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7361 7362 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7363 if (err) 7364 kzfree(connkeys); 7365 return err; 7366} 7367 7368static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7369{ 7370 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7371 struct net_device *dev = info->user_ptr[1]; 7372 7373 if (!rdev->ops->leave_ibss) 7374 return -EOPNOTSUPP; 7375 7376 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7377 return -EOPNOTSUPP; 7378 7379 return cfg80211_leave_ibss(rdev, dev, false); 7380} 7381 7382static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7383{ 7384 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7385 struct net_device *dev = info->user_ptr[1]; 7386 int mcast_rate[IEEE80211_NUM_BANDS]; 7387 u32 nla_rate; 7388 int err; 7389 7390 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7391 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 7392 return -EOPNOTSUPP; 7393 7394 if (!rdev->ops->set_mcast_rate) 7395 return -EOPNOTSUPP; 7396 7397 memset(mcast_rate, 0, sizeof(mcast_rate)); 7398 7399 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7400 return -EINVAL; 7401 7402 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7403 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7404 return -EINVAL; 7405 7406 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 7407 7408 return err; 7409} 7410 7411static struct sk_buff * 7412__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7413 struct wireless_dev *wdev, int approxlen, 7414 u32 portid, u32 seq, enum nl80211_commands cmd, 7415 enum nl80211_attrs attr, 7416 const struct nl80211_vendor_cmd_info *info, 7417 gfp_t gfp) 7418{ 7419 struct sk_buff *skb; 7420 void *hdr; 7421 struct nlattr *data; 7422 7423 skb = nlmsg_new(approxlen + 100, gfp); 7424 if (!skb) 7425 return NULL; 7426 7427 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7428 if (!hdr) { 7429 kfree_skb(skb); 7430 return NULL; 7431 } 7432 7433 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7434 goto nla_put_failure; 7435 7436 if (info) { 7437 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7438 info->vendor_id)) 7439 goto nla_put_failure; 7440 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7441 info->subcmd)) 7442 goto nla_put_failure; 7443 } 7444 7445 if (wdev) { 7446 if (nla_put_u64(skb, NL80211_ATTR_WDEV, 7447 wdev_id(wdev))) 7448 goto nla_put_failure; 7449 if (wdev->netdev && 7450 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 7451 wdev->netdev->ifindex)) 7452 goto nla_put_failure; 7453 } 7454 7455 data = nla_nest_start(skb, attr); 7456 7457 ((void **)skb->cb)[0] = rdev; 7458 ((void **)skb->cb)[1] = hdr; 7459 ((void **)skb->cb)[2] = data; 7460 7461 return skb; 7462 7463 nla_put_failure: 7464 kfree_skb(skb); 7465 return NULL; 7466} 7467 7468struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 7469 struct wireless_dev *wdev, 7470 enum nl80211_commands cmd, 7471 enum nl80211_attrs attr, 7472 int vendor_event_idx, 7473 int approxlen, gfp_t gfp) 7474{ 7475 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 7476 const struct nl80211_vendor_cmd_info *info; 7477 7478 switch (cmd) { 7479 case NL80211_CMD_TESTMODE: 7480 if (WARN_ON(vendor_event_idx != -1)) 7481 return NULL; 7482 info = NULL; 7483 break; 7484 case NL80211_CMD_VENDOR: 7485 if (WARN_ON(vendor_event_idx < 0 || 7486 vendor_event_idx >= wiphy->n_vendor_events)) 7487 return NULL; 7488 info = &wiphy->vendor_events[vendor_event_idx]; 7489 break; 7490 default: 7491 WARN_ON(1); 7492 return NULL; 7493 } 7494 7495 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 7496 cmd, attr, info, gfp); 7497} 7498EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 7499 7500void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 7501{ 7502 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 7503 void *hdr = ((void **)skb->cb)[1]; 7504 struct nlattr *data = ((void **)skb->cb)[2]; 7505 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 7506 7507 /* clear CB data for netlink core to own from now on */ 7508 memset(skb->cb, 0, sizeof(skb->cb)); 7509 7510 nla_nest_end(skb, data); 7511 genlmsg_end(skb, hdr); 7512 7513 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 7514 mcgrp = NL80211_MCGRP_VENDOR; 7515 7516 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 7517 mcgrp, gfp); 7518} 7519EXPORT_SYMBOL(__cfg80211_send_event_skb); 7520 7521#ifdef CONFIG_NL80211_TESTMODE 7522static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 7523{ 7524 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7525 struct wireless_dev *wdev = 7526 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 7527 int err; 7528 7529 if (!rdev->ops->testmode_cmd) 7530 return -EOPNOTSUPP; 7531 7532 if (IS_ERR(wdev)) { 7533 err = PTR_ERR(wdev); 7534 if (err != -EINVAL) 7535 return err; 7536 wdev = NULL; 7537 } else if (wdev->wiphy != &rdev->wiphy) { 7538 return -EINVAL; 7539 } 7540 7541 if (!info->attrs[NL80211_ATTR_TESTDATA]) 7542 return -EINVAL; 7543 7544 rdev->cur_cmd_info = info; 7545 err = rdev_testmode_cmd(rdev, wdev, 7546 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 7547 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 7548 rdev->cur_cmd_info = NULL; 7549 7550 return err; 7551} 7552 7553static int nl80211_testmode_dump(struct sk_buff *skb, 7554 struct netlink_callback *cb) 7555{ 7556 struct cfg80211_registered_device *rdev; 7557 int err; 7558 long phy_idx; 7559 void *data = NULL; 7560 int data_len = 0; 7561 7562 rtnl_lock(); 7563 7564 if (cb->args[0]) { 7565 /* 7566 * 0 is a valid index, but not valid for args[0], 7567 * so we need to offset by 1. 7568 */ 7569 phy_idx = cb->args[0] - 1; 7570 } else { 7571 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 7572 nl80211_fam.attrbuf, nl80211_fam.maxattr, 7573 nl80211_policy); 7574 if (err) 7575 goto out_err; 7576 7577 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 7578 nl80211_fam.attrbuf); 7579 if (IS_ERR(rdev)) { 7580 err = PTR_ERR(rdev); 7581 goto out_err; 7582 } 7583 phy_idx = rdev->wiphy_idx; 7584 rdev = NULL; 7585 7586 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 7587 cb->args[1] = 7588 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 7589 } 7590 7591 if (cb->args[1]) { 7592 data = nla_data((void *)cb->args[1]); 7593 data_len = nla_len((void *)cb->args[1]); 7594 } 7595 7596 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 7597 if (!rdev) { 7598 err = -ENOENT; 7599 goto out_err; 7600 } 7601 7602 if (!rdev->ops->testmode_dump) { 7603 err = -EOPNOTSUPP; 7604 goto out_err; 7605 } 7606 7607 while (1) { 7608 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 7609 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7610 NL80211_CMD_TESTMODE); 7611 struct nlattr *tmdata; 7612 7613 if (!hdr) 7614 break; 7615 7616 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 7617 genlmsg_cancel(skb, hdr); 7618 break; 7619 } 7620 7621 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 7622 if (!tmdata) { 7623 genlmsg_cancel(skb, hdr); 7624 break; 7625 } 7626 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 7627 nla_nest_end(skb, tmdata); 7628 7629 if (err == -ENOBUFS || err == -ENOENT) { 7630 genlmsg_cancel(skb, hdr); 7631 break; 7632 } else if (err) { 7633 genlmsg_cancel(skb, hdr); 7634 goto out_err; 7635 } 7636 7637 genlmsg_end(skb, hdr); 7638 } 7639 7640 err = skb->len; 7641 /* see above */ 7642 cb->args[0] = phy_idx + 1; 7643 out_err: 7644 rtnl_unlock(); 7645 return err; 7646} 7647#endif 7648 7649static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 7650{ 7651 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7652 struct net_device *dev = info->user_ptr[1]; 7653 struct cfg80211_connect_params connect; 7654 struct wiphy *wiphy; 7655 struct cfg80211_cached_keys *connkeys = NULL; 7656 int err; 7657 7658 memset(&connect, 0, sizeof(connect)); 7659 7660 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7661 return -EINVAL; 7662 7663 if (!info->attrs[NL80211_ATTR_SSID] || 7664 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7665 return -EINVAL; 7666 7667 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 7668 connect.auth_type = 7669 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7670 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 7671 NL80211_CMD_CONNECT)) 7672 return -EINVAL; 7673 } else 7674 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 7675 7676 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 7677 7678 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 7679 NL80211_MAX_NR_CIPHER_SUITES); 7680 if (err) 7681 return err; 7682 7683 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7684 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7685 return -EOPNOTSUPP; 7686 7687 wiphy = &rdev->wiphy; 7688 7689 connect.bg_scan_period = -1; 7690 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 7691 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 7692 connect.bg_scan_period = 7693 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 7694 } 7695 7696 if (info->attrs[NL80211_ATTR_MAC]) 7697 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7698 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 7699 connect.bssid_hint = 7700 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 7701 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7702 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7703 7704 if (info->attrs[NL80211_ATTR_IE]) { 7705 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7706 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7707 } 7708 7709 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7710 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7711 if (connect.mfp != NL80211_MFP_REQUIRED && 7712 connect.mfp != NL80211_MFP_NO) 7713 return -EINVAL; 7714 } else { 7715 connect.mfp = NL80211_MFP_NO; 7716 } 7717 7718 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7719 connect.channel = nl80211_get_valid_chan( 7720 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7721 if (!connect.channel) 7722 return -EINVAL; 7723 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 7724 connect.channel_hint = nl80211_get_valid_chan( 7725 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 7726 if (!connect.channel_hint) 7727 return -EINVAL; 7728 } 7729 7730 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7731 connkeys = nl80211_parse_connkeys(rdev, 7732 info->attrs[NL80211_ATTR_KEYS], NULL); 7733 if (IS_ERR(connkeys)) 7734 return PTR_ERR(connkeys); 7735 } 7736 7737 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7738 connect.flags |= ASSOC_REQ_DISABLE_HT; 7739 7740 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7741 memcpy(&connect.ht_capa_mask, 7742 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7743 sizeof(connect.ht_capa_mask)); 7744 7745 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7746 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 7747 kzfree(connkeys); 7748 return -EINVAL; 7749 } 7750 memcpy(&connect.ht_capa, 7751 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7752 sizeof(connect.ht_capa)); 7753 } 7754 7755 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7756 connect.flags |= ASSOC_REQ_DISABLE_VHT; 7757 7758 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7759 memcpy(&connect.vht_capa_mask, 7760 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7761 sizeof(connect.vht_capa_mask)); 7762 7763 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7764 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7765 kzfree(connkeys); 7766 return -EINVAL; 7767 } 7768 memcpy(&connect.vht_capa, 7769 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7770 sizeof(connect.vht_capa)); 7771 } 7772 7773 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7774 if (!(rdev->wiphy.features & 7775 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7776 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7777 return -EINVAL; 7778 connect.flags |= ASSOC_REQ_USE_RRM; 7779 } 7780 7781 wdev_lock(dev->ieee80211_ptr); 7782 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 7783 wdev_unlock(dev->ieee80211_ptr); 7784 if (err) 7785 kzfree(connkeys); 7786 return err; 7787} 7788 7789static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 7790{ 7791 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7792 struct net_device *dev = info->user_ptr[1]; 7793 u16 reason; 7794 int ret; 7795 7796 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7797 reason = WLAN_REASON_DEAUTH_LEAVING; 7798 else 7799 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7800 7801 if (reason == 0) 7802 return -EINVAL; 7803 7804 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7805 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7806 return -EOPNOTSUPP; 7807 7808 wdev_lock(dev->ieee80211_ptr); 7809 ret = cfg80211_disconnect(rdev, dev, reason, true); 7810 wdev_unlock(dev->ieee80211_ptr); 7811 return ret; 7812} 7813 7814static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 7815{ 7816 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7817 struct net *net; 7818 int err; 7819 7820 if (info->attrs[NL80211_ATTR_PID]) { 7821 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 7822 7823 net = get_net_ns_by_pid(pid); 7824 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 7825 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 7826 7827 net = get_net_ns_by_fd(fd); 7828 } else { 7829 return -EINVAL; 7830 } 7831 7832 if (IS_ERR(net)) 7833 return PTR_ERR(net); 7834 7835 err = 0; 7836 7837 /* check if anything to do */ 7838 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 7839 err = cfg80211_switch_netns(rdev, net); 7840 7841 put_net(net); 7842 return err; 7843} 7844 7845static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 7846{ 7847 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7848 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 7849 struct cfg80211_pmksa *pmksa) = NULL; 7850 struct net_device *dev = info->user_ptr[1]; 7851 struct cfg80211_pmksa pmksa; 7852 7853 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 7854 7855 if (!info->attrs[NL80211_ATTR_MAC]) 7856 return -EINVAL; 7857 7858 if (!info->attrs[NL80211_ATTR_PMKID]) 7859 return -EINVAL; 7860 7861 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7862 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7863 7864 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7865 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7866 return -EOPNOTSUPP; 7867 7868 switch (info->genlhdr->cmd) { 7869 case NL80211_CMD_SET_PMKSA: 7870 rdev_ops = rdev->ops->set_pmksa; 7871 break; 7872 case NL80211_CMD_DEL_PMKSA: 7873 rdev_ops = rdev->ops->del_pmksa; 7874 break; 7875 default: 7876 WARN_ON(1); 7877 break; 7878 } 7879 7880 if (!rdev_ops) 7881 return -EOPNOTSUPP; 7882 7883 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7884} 7885 7886static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7887{ 7888 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7889 struct net_device *dev = info->user_ptr[1]; 7890 7891 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7892 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7893 return -EOPNOTSUPP; 7894 7895 if (!rdev->ops->flush_pmksa) 7896 return -EOPNOTSUPP; 7897 7898 return rdev_flush_pmksa(rdev, dev); 7899} 7900 7901static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7902{ 7903 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7904 struct net_device *dev = info->user_ptr[1]; 7905 u8 action_code, dialog_token; 7906 u32 peer_capability = 0; 7907 u16 status_code; 7908 u8 *peer; 7909 bool initiator; 7910 7911 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7912 !rdev->ops->tdls_mgmt) 7913 return -EOPNOTSUPP; 7914 7915 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7916 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7917 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7918 !info->attrs[NL80211_ATTR_IE] || 7919 !info->attrs[NL80211_ATTR_MAC]) 7920 return -EINVAL; 7921 7922 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7923 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7924 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7925 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7926 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 7927 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 7928 peer_capability = 7929 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 7930 7931 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7932 dialog_token, status_code, peer_capability, 7933 initiator, 7934 nla_data(info->attrs[NL80211_ATTR_IE]), 7935 nla_len(info->attrs[NL80211_ATTR_IE])); 7936} 7937 7938static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7939{ 7940 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7941 struct net_device *dev = info->user_ptr[1]; 7942 enum nl80211_tdls_operation operation; 7943 u8 *peer; 7944 7945 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7946 !rdev->ops->tdls_oper) 7947 return -EOPNOTSUPP; 7948 7949 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7950 !info->attrs[NL80211_ATTR_MAC]) 7951 return -EINVAL; 7952 7953 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7954 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7955 7956 return rdev_tdls_oper(rdev, dev, peer, operation); 7957} 7958 7959static int nl80211_remain_on_channel(struct sk_buff *skb, 7960 struct genl_info *info) 7961{ 7962 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7963 struct wireless_dev *wdev = info->user_ptr[1]; 7964 struct cfg80211_chan_def chandef; 7965 struct sk_buff *msg; 7966 void *hdr; 7967 u64 cookie; 7968 u32 duration; 7969 int err; 7970 7971 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7972 !info->attrs[NL80211_ATTR_DURATION]) 7973 return -EINVAL; 7974 7975 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7976 7977 if (!rdev->ops->remain_on_channel || 7978 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7979 return -EOPNOTSUPP; 7980 7981 /* 7982 * We should be on that channel for at least a minimum amount of 7983 * time (10ms) but no longer than the driver supports. 7984 */ 7985 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7986 duration > rdev->wiphy.max_remain_on_channel_duration) 7987 return -EINVAL; 7988 7989 err = nl80211_parse_chandef(rdev, info, &chandef); 7990 if (err) 7991 return err; 7992 7993 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7994 if (!msg) 7995 return -ENOMEM; 7996 7997 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7998 NL80211_CMD_REMAIN_ON_CHANNEL); 7999 if (!hdr) { 8000 err = -ENOBUFS; 8001 goto free_msg; 8002 } 8003 8004 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 8005 duration, &cookie); 8006 8007 if (err) 8008 goto free_msg; 8009 8010 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8011 goto nla_put_failure; 8012 8013 genlmsg_end(msg, hdr); 8014 8015 return genlmsg_reply(msg, info); 8016 8017 nla_put_failure: 8018 err = -ENOBUFS; 8019 free_msg: 8020 nlmsg_free(msg); 8021 return err; 8022} 8023 8024static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 8025 struct genl_info *info) 8026{ 8027 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8028 struct wireless_dev *wdev = info->user_ptr[1]; 8029 u64 cookie; 8030 8031 if (!info->attrs[NL80211_ATTR_COOKIE]) 8032 return -EINVAL; 8033 8034 if (!rdev->ops->cancel_remain_on_channel) 8035 return -EOPNOTSUPP; 8036 8037 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8038 8039 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 8040} 8041 8042static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 8043 u8 *rates, u8 rates_len) 8044{ 8045 u8 i; 8046 u32 mask = 0; 8047 8048 for (i = 0; i < rates_len; i++) { 8049 int rate = (rates[i] & 0x7f) * 5; 8050 int ridx; 8051 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 8052 struct ieee80211_rate *srate = 8053 &sband->bitrates[ridx]; 8054 if (rate == srate->bitrate) { 8055 mask |= 1 << ridx; 8056 break; 8057 } 8058 } 8059 if (ridx == sband->n_bitrates) 8060 return 0; /* rate not found */ 8061 } 8062 8063 return mask; 8064} 8065 8066static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 8067 u8 *rates, u8 rates_len, 8068 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 8069{ 8070 u8 i; 8071 8072 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 8073 8074 for (i = 0; i < rates_len; i++) { 8075 int ridx, rbit; 8076 8077 ridx = rates[i] / 8; 8078 rbit = BIT(rates[i] % 8); 8079 8080 /* check validity */ 8081 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 8082 return false; 8083 8084 /* check availability */ 8085 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 8086 mcs[ridx] |= rbit; 8087 else 8088 return false; 8089 } 8090 8091 return true; 8092} 8093 8094static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 8095{ 8096 u16 mcs_mask = 0; 8097 8098 switch (vht_mcs_map) { 8099 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 8100 break; 8101 case IEEE80211_VHT_MCS_SUPPORT_0_7: 8102 mcs_mask = 0x00FF; 8103 break; 8104 case IEEE80211_VHT_MCS_SUPPORT_0_8: 8105 mcs_mask = 0x01FF; 8106 break; 8107 case IEEE80211_VHT_MCS_SUPPORT_0_9: 8108 mcs_mask = 0x03FF; 8109 break; 8110 default: 8111 break; 8112 } 8113 8114 return mcs_mask; 8115} 8116 8117static void vht_build_mcs_mask(u16 vht_mcs_map, 8118 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 8119{ 8120 u8 nss; 8121 8122 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 8123 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 8124 vht_mcs_map >>= 2; 8125 } 8126} 8127 8128static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 8129 struct nl80211_txrate_vht *txrate, 8130 u16 mcs[NL80211_VHT_NSS_MAX]) 8131{ 8132 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8133 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 8134 u8 i; 8135 8136 if (!sband->vht_cap.vht_supported) 8137 return false; 8138 8139 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 8140 8141 /* Build vht_mcs_mask from VHT capabilities */ 8142 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 8143 8144 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 8145 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 8146 mcs[i] = txrate->mcs[i]; 8147 else 8148 return false; 8149 } 8150 8151 return true; 8152} 8153 8154static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 8155 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 8156 .len = NL80211_MAX_SUPP_RATES }, 8157 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 8158 .len = NL80211_MAX_SUPP_HT_RATES }, 8159 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 8160 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 8161}; 8162 8163static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 8164 struct genl_info *info) 8165{ 8166 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 8167 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8168 struct cfg80211_bitrate_mask mask; 8169 int rem, i; 8170 struct net_device *dev = info->user_ptr[1]; 8171 struct nlattr *tx_rates; 8172 struct ieee80211_supported_band *sband; 8173 u16 vht_tx_mcs_map; 8174 8175 if (!rdev->ops->set_bitrate_mask) 8176 return -EOPNOTSUPP; 8177 8178 memset(&mask, 0, sizeof(mask)); 8179 /* Default to all rates enabled */ 8180 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 8181 sband = rdev->wiphy.bands[i]; 8182 8183 if (!sband) 8184 continue; 8185 8186 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 8187 memcpy(mask.control[i].ht_mcs, 8188 sband->ht_cap.mcs.rx_mask, 8189 sizeof(mask.control[i].ht_mcs)); 8190 8191 if (!sband->vht_cap.vht_supported) 8192 continue; 8193 8194 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8195 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 8196 } 8197 8198 /* if no rates are given set it back to the defaults */ 8199 if (!info->attrs[NL80211_ATTR_TX_RATES]) 8200 goto out; 8201 8202 /* 8203 * The nested attribute uses enum nl80211_band as the index. This maps 8204 * directly to the enum ieee80211_band values used in cfg80211. 8205 */ 8206 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 8207 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 8208 enum ieee80211_band band = nla_type(tx_rates); 8209 int err; 8210 8211 if (band < 0 || band >= IEEE80211_NUM_BANDS) 8212 return -EINVAL; 8213 sband = rdev->wiphy.bands[band]; 8214 if (sband == NULL) 8215 return -EINVAL; 8216 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 8217 nla_len(tx_rates), nl80211_txattr_policy); 8218 if (err) 8219 return err; 8220 if (tb[NL80211_TXRATE_LEGACY]) { 8221 mask.control[band].legacy = rateset_to_mask( 8222 sband, 8223 nla_data(tb[NL80211_TXRATE_LEGACY]), 8224 nla_len(tb[NL80211_TXRATE_LEGACY])); 8225 if ((mask.control[band].legacy == 0) && 8226 nla_len(tb[NL80211_TXRATE_LEGACY])) 8227 return -EINVAL; 8228 } 8229 if (tb[NL80211_TXRATE_HT]) { 8230 if (!ht_rateset_to_mask( 8231 sband, 8232 nla_data(tb[NL80211_TXRATE_HT]), 8233 nla_len(tb[NL80211_TXRATE_HT]), 8234 mask.control[band].ht_mcs)) 8235 return -EINVAL; 8236 } 8237 if (tb[NL80211_TXRATE_VHT]) { 8238 if (!vht_set_mcs_mask( 8239 sband, 8240 nla_data(tb[NL80211_TXRATE_VHT]), 8241 mask.control[band].vht_mcs)) 8242 return -EINVAL; 8243 } 8244 if (tb[NL80211_TXRATE_GI]) { 8245 mask.control[band].gi = 8246 nla_get_u8(tb[NL80211_TXRATE_GI]); 8247 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8248 return -EINVAL; 8249 } 8250 8251 if (mask.control[band].legacy == 0) { 8252 /* don't allow empty legacy rates if HT or VHT 8253 * are not even supported. 8254 */ 8255 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8256 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8257 return -EINVAL; 8258 8259 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8260 if (mask.control[band].ht_mcs[i]) 8261 goto out; 8262 8263 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8264 if (mask.control[band].vht_mcs[i]) 8265 goto out; 8266 8267 /* legacy and mcs rates may not be both empty */ 8268 return -EINVAL; 8269 } 8270 } 8271 8272out: 8273 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8274} 8275 8276static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8277{ 8278 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8279 struct wireless_dev *wdev = info->user_ptr[1]; 8280 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8281 8282 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8283 return -EINVAL; 8284 8285 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8286 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8287 8288 switch (wdev->iftype) { 8289 case NL80211_IFTYPE_STATION: 8290 case NL80211_IFTYPE_ADHOC: 8291 case NL80211_IFTYPE_P2P_CLIENT: 8292 case NL80211_IFTYPE_AP: 8293 case NL80211_IFTYPE_AP_VLAN: 8294 case NL80211_IFTYPE_MESH_POINT: 8295 case NL80211_IFTYPE_P2P_GO: 8296 case NL80211_IFTYPE_P2P_DEVICE: 8297 break; 8298 default: 8299 return -EOPNOTSUPP; 8300 } 8301 8302 /* not much point in registering if we can't reply */ 8303 if (!rdev->ops->mgmt_tx) 8304 return -EOPNOTSUPP; 8305 8306 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8307 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8308 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8309} 8310 8311static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8312{ 8313 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8314 struct wireless_dev *wdev = info->user_ptr[1]; 8315 struct cfg80211_chan_def chandef; 8316 int err; 8317 void *hdr = NULL; 8318 u64 cookie; 8319 struct sk_buff *msg = NULL; 8320 struct cfg80211_mgmt_tx_params params = { 8321 .dont_wait_for_ack = 8322 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8323 }; 8324 8325 if (!info->attrs[NL80211_ATTR_FRAME]) 8326 return -EINVAL; 8327 8328 if (!rdev->ops->mgmt_tx) 8329 return -EOPNOTSUPP; 8330 8331 switch (wdev->iftype) { 8332 case NL80211_IFTYPE_P2P_DEVICE: 8333 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8334 return -EINVAL; 8335 case NL80211_IFTYPE_STATION: 8336 case NL80211_IFTYPE_ADHOC: 8337 case NL80211_IFTYPE_P2P_CLIENT: 8338 case NL80211_IFTYPE_AP: 8339 case NL80211_IFTYPE_AP_VLAN: 8340 case NL80211_IFTYPE_MESH_POINT: 8341 case NL80211_IFTYPE_P2P_GO: 8342 break; 8343 default: 8344 return -EOPNOTSUPP; 8345 } 8346 8347 if (info->attrs[NL80211_ATTR_DURATION]) { 8348 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8349 return -EINVAL; 8350 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8351 8352 /* 8353 * We should wait on the channel for at least a minimum amount 8354 * of time (10ms) but no longer than the driver supports. 8355 */ 8356 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8357 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8358 return -EINVAL; 8359 8360 } 8361 8362 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8363 8364 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8365 return -EINVAL; 8366 8367 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8368 8369 /* get the channel if any has been specified, otherwise pass NULL to 8370 * the driver. The latter will use the current one 8371 */ 8372 chandef.chan = NULL; 8373 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8374 err = nl80211_parse_chandef(rdev, info, &chandef); 8375 if (err) 8376 return err; 8377 } 8378 8379 if (!chandef.chan && params.offchan) 8380 return -EINVAL; 8381 8382 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8383 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8384 8385 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8386 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8387 int i; 8388 8389 if (len % sizeof(u16)) 8390 return -EINVAL; 8391 8392 params.n_csa_offsets = len / sizeof(u16); 8393 params.csa_offsets = 8394 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8395 8396 /* check that all the offsets fit the frame */ 8397 for (i = 0; i < params.n_csa_offsets; i++) { 8398 if (params.csa_offsets[i] >= params.len) 8399 return -EINVAL; 8400 } 8401 } 8402 8403 if (!params.dont_wait_for_ack) { 8404 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8405 if (!msg) 8406 return -ENOMEM; 8407 8408 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8409 NL80211_CMD_FRAME); 8410 if (!hdr) { 8411 err = -ENOBUFS; 8412 goto free_msg; 8413 } 8414 } 8415 8416 params.chan = chandef.chan; 8417 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8418 if (err) 8419 goto free_msg; 8420 8421 if (msg) { 8422 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8423 goto nla_put_failure; 8424 8425 genlmsg_end(msg, hdr); 8426 return genlmsg_reply(msg, info); 8427 } 8428 8429 return 0; 8430 8431 nla_put_failure: 8432 err = -ENOBUFS; 8433 free_msg: 8434 nlmsg_free(msg); 8435 return err; 8436} 8437 8438static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 8439{ 8440 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8441 struct wireless_dev *wdev = info->user_ptr[1]; 8442 u64 cookie; 8443 8444 if (!info->attrs[NL80211_ATTR_COOKIE]) 8445 return -EINVAL; 8446 8447 if (!rdev->ops->mgmt_tx_cancel_wait) 8448 return -EOPNOTSUPP; 8449 8450 switch (wdev->iftype) { 8451 case NL80211_IFTYPE_STATION: 8452 case NL80211_IFTYPE_ADHOC: 8453 case NL80211_IFTYPE_P2P_CLIENT: 8454 case NL80211_IFTYPE_AP: 8455 case NL80211_IFTYPE_AP_VLAN: 8456 case NL80211_IFTYPE_P2P_GO: 8457 case NL80211_IFTYPE_P2P_DEVICE: 8458 break; 8459 default: 8460 return -EOPNOTSUPP; 8461 } 8462 8463 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8464 8465 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 8466} 8467 8468static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 8469{ 8470 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8471 struct wireless_dev *wdev; 8472 struct net_device *dev = info->user_ptr[1]; 8473 u8 ps_state; 8474 bool state; 8475 int err; 8476 8477 if (!info->attrs[NL80211_ATTR_PS_STATE]) 8478 return -EINVAL; 8479 8480 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 8481 8482 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 8483 return -EINVAL; 8484 8485 wdev = dev->ieee80211_ptr; 8486 8487 if (!rdev->ops->set_power_mgmt) 8488 return -EOPNOTSUPP; 8489 8490 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 8491 8492 if (state == wdev->ps) 8493 return 0; 8494 8495 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 8496 if (!err) 8497 wdev->ps = state; 8498 return err; 8499} 8500 8501static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 8502{ 8503 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8504 enum nl80211_ps_state ps_state; 8505 struct wireless_dev *wdev; 8506 struct net_device *dev = info->user_ptr[1]; 8507 struct sk_buff *msg; 8508 void *hdr; 8509 int err; 8510 8511 wdev = dev->ieee80211_ptr; 8512 8513 if (!rdev->ops->set_power_mgmt) 8514 return -EOPNOTSUPP; 8515 8516 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8517 if (!msg) 8518 return -ENOMEM; 8519 8520 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8521 NL80211_CMD_GET_POWER_SAVE); 8522 if (!hdr) { 8523 err = -ENOBUFS; 8524 goto free_msg; 8525 } 8526 8527 if (wdev->ps) 8528 ps_state = NL80211_PS_ENABLED; 8529 else 8530 ps_state = NL80211_PS_DISABLED; 8531 8532 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 8533 goto nla_put_failure; 8534 8535 genlmsg_end(msg, hdr); 8536 return genlmsg_reply(msg, info); 8537 8538 nla_put_failure: 8539 err = -ENOBUFS; 8540 free_msg: 8541 nlmsg_free(msg); 8542 return err; 8543} 8544 8545static const struct nla_policy 8546nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 8547 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 8548 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 8549 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 8550 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 8551 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 8552 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 8553}; 8554 8555static int nl80211_set_cqm_txe(struct genl_info *info, 8556 u32 rate, u32 pkts, u32 intvl) 8557{ 8558 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8559 struct net_device *dev = info->user_ptr[1]; 8560 struct wireless_dev *wdev = dev->ieee80211_ptr; 8561 8562 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 8563 return -EINVAL; 8564 8565 if (!rdev->ops->set_cqm_txe_config) 8566 return -EOPNOTSUPP; 8567 8568 if (wdev->iftype != NL80211_IFTYPE_STATION && 8569 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8570 return -EOPNOTSUPP; 8571 8572 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 8573} 8574 8575static int nl80211_set_cqm_rssi(struct genl_info *info, 8576 s32 threshold, u32 hysteresis) 8577{ 8578 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8579 struct net_device *dev = info->user_ptr[1]; 8580 struct wireless_dev *wdev = dev->ieee80211_ptr; 8581 8582 if (threshold > 0) 8583 return -EINVAL; 8584 8585 /* disabling - hysteresis should also be zero then */ 8586 if (threshold == 0) 8587 hysteresis = 0; 8588 8589 if (!rdev->ops->set_cqm_rssi_config) 8590 return -EOPNOTSUPP; 8591 8592 if (wdev->iftype != NL80211_IFTYPE_STATION && 8593 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8594 return -EOPNOTSUPP; 8595 8596 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 8597} 8598 8599static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 8600{ 8601 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 8602 struct nlattr *cqm; 8603 int err; 8604 8605 cqm = info->attrs[NL80211_ATTR_CQM]; 8606 if (!cqm) 8607 return -EINVAL; 8608 8609 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 8610 nl80211_attr_cqm_policy); 8611 if (err) 8612 return err; 8613 8614 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 8615 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 8616 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 8617 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 8618 8619 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 8620 } 8621 8622 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 8623 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 8624 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 8625 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 8626 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 8627 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 8628 8629 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 8630 } 8631 8632 return -EINVAL; 8633} 8634 8635static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 8636{ 8637 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8638 struct net_device *dev = info->user_ptr[1]; 8639 struct ocb_setup setup = {}; 8640 int err; 8641 8642 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8643 if (err) 8644 return err; 8645 8646 return cfg80211_join_ocb(rdev, dev, &setup); 8647} 8648 8649static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 8650{ 8651 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8652 struct net_device *dev = info->user_ptr[1]; 8653 8654 return cfg80211_leave_ocb(rdev, dev); 8655} 8656 8657static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 8658{ 8659 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8660 struct net_device *dev = info->user_ptr[1]; 8661 struct mesh_config cfg; 8662 struct mesh_setup setup; 8663 int err; 8664 8665 /* start with default */ 8666 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 8667 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 8668 8669 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 8670 /* and parse parameters if given */ 8671 err = nl80211_parse_mesh_config(info, &cfg, NULL); 8672 if (err) 8673 return err; 8674 } 8675 8676 if (!info->attrs[NL80211_ATTR_MESH_ID] || 8677 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 8678 return -EINVAL; 8679 8680 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 8681 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 8682 8683 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8684 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 8685 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8686 return -EINVAL; 8687 8688 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 8689 setup.beacon_interval = 8690 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8691 if (setup.beacon_interval < 10 || 8692 setup.beacon_interval > 10000) 8693 return -EINVAL; 8694 } 8695 8696 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 8697 setup.dtim_period = 8698 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 8699 if (setup.dtim_period < 1 || setup.dtim_period > 100) 8700 return -EINVAL; 8701 } 8702 8703 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 8704 /* parse additional setup parameters if given */ 8705 err = nl80211_parse_mesh_setup(info, &setup); 8706 if (err) 8707 return err; 8708 } 8709 8710 if (setup.user_mpm) 8711 cfg.auto_open_plinks = false; 8712 8713 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8714 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8715 if (err) 8716 return err; 8717 } else { 8718 /* cfg80211_join_mesh() will sort it out */ 8719 setup.chandef.chan = NULL; 8720 } 8721 8722 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8723 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8724 int n_rates = 8725 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8726 struct ieee80211_supported_band *sband; 8727 8728 if (!setup.chandef.chan) 8729 return -EINVAL; 8730 8731 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 8732 8733 err = ieee80211_get_ratemask(sband, rates, n_rates, 8734 &setup.basic_rates); 8735 if (err) 8736 return err; 8737 } 8738 8739 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 8740} 8741 8742static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 8743{ 8744 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8745 struct net_device *dev = info->user_ptr[1]; 8746 8747 return cfg80211_leave_mesh(rdev, dev); 8748} 8749 8750#ifdef CONFIG_PM 8751static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 8752 struct cfg80211_registered_device *rdev) 8753{ 8754 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 8755 struct nlattr *nl_pats, *nl_pat; 8756 int i, pat_len; 8757 8758 if (!wowlan->n_patterns) 8759 return 0; 8760 8761 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 8762 if (!nl_pats) 8763 return -ENOBUFS; 8764 8765 for (i = 0; i < wowlan->n_patterns; i++) { 8766 nl_pat = nla_nest_start(msg, i + 1); 8767 if (!nl_pat) 8768 return -ENOBUFS; 8769 pat_len = wowlan->patterns[i].pattern_len; 8770 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 8771 wowlan->patterns[i].mask) || 8772 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8773 wowlan->patterns[i].pattern) || 8774 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8775 wowlan->patterns[i].pkt_offset)) 8776 return -ENOBUFS; 8777 nla_nest_end(msg, nl_pat); 8778 } 8779 nla_nest_end(msg, nl_pats); 8780 8781 return 0; 8782} 8783 8784static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 8785 struct cfg80211_wowlan_tcp *tcp) 8786{ 8787 struct nlattr *nl_tcp; 8788 8789 if (!tcp) 8790 return 0; 8791 8792 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 8793 if (!nl_tcp) 8794 return -ENOBUFS; 8795 8796 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 8797 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 8798 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 8799 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 8800 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 8801 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 8802 tcp->payload_len, tcp->payload) || 8803 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 8804 tcp->data_interval) || 8805 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 8806 tcp->wake_len, tcp->wake_data) || 8807 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 8808 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 8809 return -ENOBUFS; 8810 8811 if (tcp->payload_seq.len && 8812 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 8813 sizeof(tcp->payload_seq), &tcp->payload_seq)) 8814 return -ENOBUFS; 8815 8816 if (tcp->payload_tok.len && 8817 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 8818 sizeof(tcp->payload_tok) + tcp->tokens_size, 8819 &tcp->payload_tok)) 8820 return -ENOBUFS; 8821 8822 nla_nest_end(msg, nl_tcp); 8823 8824 return 0; 8825} 8826 8827static int nl80211_send_wowlan_nd(struct sk_buff *msg, 8828 struct cfg80211_sched_scan_request *req) 8829{ 8830 struct nlattr *nd, *freqs, *matches, *match; 8831 int i; 8832 8833 if (!req) 8834 return 0; 8835 8836 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 8837 if (!nd) 8838 return -ENOBUFS; 8839 8840 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval)) 8841 return -ENOBUFS; 8842 8843 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 8844 return -ENOBUFS; 8845 8846 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 8847 if (!freqs) 8848 return -ENOBUFS; 8849 8850 for (i = 0; i < req->n_channels; i++) 8851 nla_put_u32(msg, i, req->channels[i]->center_freq); 8852 8853 nla_nest_end(msg, freqs); 8854 8855 if (req->n_match_sets) { 8856 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 8857 for (i = 0; i < req->n_match_sets; i++) { 8858 match = nla_nest_start(msg, i); 8859 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 8860 req->match_sets[i].ssid.ssid_len, 8861 req->match_sets[i].ssid.ssid); 8862 nla_nest_end(msg, match); 8863 } 8864 nla_nest_end(msg, matches); 8865 } 8866 8867 nla_nest_end(msg, nd); 8868 8869 return 0; 8870} 8871 8872static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 8873{ 8874 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8875 struct sk_buff *msg; 8876 void *hdr; 8877 u32 size = NLMSG_DEFAULT_SIZE; 8878 8879 if (!rdev->wiphy.wowlan) 8880 return -EOPNOTSUPP; 8881 8882 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 8883 /* adjust size to have room for all the data */ 8884 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 8885 rdev->wiphy.wowlan_config->tcp->payload_len + 8886 rdev->wiphy.wowlan_config->tcp->wake_len + 8887 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 8888 } 8889 8890 msg = nlmsg_new(size, GFP_KERNEL); 8891 if (!msg) 8892 return -ENOMEM; 8893 8894 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8895 NL80211_CMD_GET_WOWLAN); 8896 if (!hdr) 8897 goto nla_put_failure; 8898 8899 if (rdev->wiphy.wowlan_config) { 8900 struct nlattr *nl_wowlan; 8901 8902 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 8903 if (!nl_wowlan) 8904 goto nla_put_failure; 8905 8906 if ((rdev->wiphy.wowlan_config->any && 8907 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 8908 (rdev->wiphy.wowlan_config->disconnect && 8909 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 8910 (rdev->wiphy.wowlan_config->magic_pkt && 8911 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 8912 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 8913 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 8914 (rdev->wiphy.wowlan_config->eap_identity_req && 8915 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 8916 (rdev->wiphy.wowlan_config->four_way_handshake && 8917 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 8918 (rdev->wiphy.wowlan_config->rfkill_release && 8919 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 8920 goto nla_put_failure; 8921 8922 if (nl80211_send_wowlan_patterns(msg, rdev)) 8923 goto nla_put_failure; 8924 8925 if (nl80211_send_wowlan_tcp(msg, 8926 rdev->wiphy.wowlan_config->tcp)) 8927 goto nla_put_failure; 8928 8929 if (nl80211_send_wowlan_nd( 8930 msg, 8931 rdev->wiphy.wowlan_config->nd_config)) 8932 goto nla_put_failure; 8933 8934 nla_nest_end(msg, nl_wowlan); 8935 } 8936 8937 genlmsg_end(msg, hdr); 8938 return genlmsg_reply(msg, info); 8939 8940nla_put_failure: 8941 nlmsg_free(msg); 8942 return -ENOBUFS; 8943} 8944 8945static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 8946 struct nlattr *attr, 8947 struct cfg80211_wowlan *trig) 8948{ 8949 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 8950 struct cfg80211_wowlan_tcp *cfg; 8951 struct nl80211_wowlan_tcp_data_token *tok = NULL; 8952 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 8953 u32 size; 8954 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 8955 int err, port; 8956 8957 if (!rdev->wiphy.wowlan->tcp) 8958 return -EINVAL; 8959 8960 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 8961 nla_data(attr), nla_len(attr), 8962 nl80211_wowlan_tcp_policy); 8963 if (err) 8964 return err; 8965 8966 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 8967 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 8968 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 8969 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 8970 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 8971 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 8972 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 8973 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 8974 return -EINVAL; 8975 8976 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 8977 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 8978 return -EINVAL; 8979 8980 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 8981 rdev->wiphy.wowlan->tcp->data_interval_max || 8982 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 8983 return -EINVAL; 8984 8985 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 8986 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 8987 return -EINVAL; 8988 8989 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 8990 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 8991 return -EINVAL; 8992 8993 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 8994 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8995 8996 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8997 tokens_size = tokln - sizeof(*tok); 8998 8999 if (!tok->len || tokens_size % tok->len) 9000 return -EINVAL; 9001 if (!rdev->wiphy.wowlan->tcp->tok) 9002 return -EINVAL; 9003 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 9004 return -EINVAL; 9005 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 9006 return -EINVAL; 9007 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 9008 return -EINVAL; 9009 if (tok->offset + tok->len > data_size) 9010 return -EINVAL; 9011 } 9012 9013 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 9014 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 9015 if (!rdev->wiphy.wowlan->tcp->seq) 9016 return -EINVAL; 9017 if (seq->len == 0 || seq->len > 4) 9018 return -EINVAL; 9019 if (seq->len + seq->offset > data_size) 9020 return -EINVAL; 9021 } 9022 9023 size = sizeof(*cfg); 9024 size += data_size; 9025 size += wake_size + wake_mask_size; 9026 size += tokens_size; 9027 9028 cfg = kzalloc(size, GFP_KERNEL); 9029 if (!cfg) 9030 return -ENOMEM; 9031 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 9032 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 9033 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 9034 ETH_ALEN); 9035 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 9036 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 9037 else 9038 port = 0; 9039#ifdef CONFIG_INET 9040 /* allocate a socket and port for it and use it */ 9041 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 9042 IPPROTO_TCP, &cfg->sock, 1); 9043 if (err) { 9044 kfree(cfg); 9045 return err; 9046 } 9047 if (inet_csk_get_port(cfg->sock->sk, port)) { 9048 sock_release(cfg->sock); 9049 kfree(cfg); 9050 return -EADDRINUSE; 9051 } 9052 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 9053#else 9054 if (!port) { 9055 kfree(cfg); 9056 return -EINVAL; 9057 } 9058 cfg->src_port = port; 9059#endif 9060 9061 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 9062 cfg->payload_len = data_size; 9063 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 9064 memcpy((void *)cfg->payload, 9065 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 9066 data_size); 9067 if (seq) 9068 cfg->payload_seq = *seq; 9069 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 9070 cfg->wake_len = wake_size; 9071 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 9072 memcpy((void *)cfg->wake_data, 9073 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 9074 wake_size); 9075 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 9076 data_size + wake_size; 9077 memcpy((void *)cfg->wake_mask, 9078 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 9079 wake_mask_size); 9080 if (tok) { 9081 cfg->tokens_size = tokens_size; 9082 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 9083 } 9084 9085 trig->tcp = cfg; 9086 9087 return 0; 9088} 9089 9090static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 9091 const struct wiphy_wowlan_support *wowlan, 9092 struct nlattr *attr, 9093 struct cfg80211_wowlan *trig) 9094{ 9095 struct nlattr **tb; 9096 int err; 9097 9098 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 9099 if (!tb) 9100 return -ENOMEM; 9101 9102 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 9103 err = -EOPNOTSUPP; 9104 goto out; 9105 } 9106 9107 err = nla_parse(tb, NL80211_ATTR_MAX, 9108 nla_data(attr), nla_len(attr), 9109 nl80211_policy); 9110 if (err) 9111 goto out; 9112 9113 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 9114 err = PTR_ERR_OR_ZERO(trig->nd_config); 9115 if (err) 9116 trig->nd_config = NULL; 9117 9118out: 9119 kfree(tb); 9120 return err; 9121} 9122 9123static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 9124{ 9125 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9126 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 9127 struct cfg80211_wowlan new_triggers = {}; 9128 struct cfg80211_wowlan *ntrig; 9129 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 9130 int err, i; 9131 bool prev_enabled = rdev->wiphy.wowlan_config; 9132 bool regular = false; 9133 9134 if (!wowlan) 9135 return -EOPNOTSUPP; 9136 9137 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 9138 cfg80211_rdev_free_wowlan(rdev); 9139 rdev->wiphy.wowlan_config = NULL; 9140 goto set_wakeup; 9141 } 9142 9143 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 9144 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9145 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9146 nl80211_wowlan_policy); 9147 if (err) 9148 return err; 9149 9150 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 9151 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 9152 return -EINVAL; 9153 new_triggers.any = true; 9154 } 9155 9156 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 9157 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 9158 return -EINVAL; 9159 new_triggers.disconnect = true; 9160 regular = true; 9161 } 9162 9163 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 9164 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 9165 return -EINVAL; 9166 new_triggers.magic_pkt = true; 9167 regular = true; 9168 } 9169 9170 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 9171 return -EINVAL; 9172 9173 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 9174 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 9175 return -EINVAL; 9176 new_triggers.gtk_rekey_failure = true; 9177 regular = true; 9178 } 9179 9180 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 9181 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 9182 return -EINVAL; 9183 new_triggers.eap_identity_req = true; 9184 regular = true; 9185 } 9186 9187 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 9188 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 9189 return -EINVAL; 9190 new_triggers.four_way_handshake = true; 9191 regular = true; 9192 } 9193 9194 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 9195 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 9196 return -EINVAL; 9197 new_triggers.rfkill_release = true; 9198 regular = true; 9199 } 9200 9201 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 9202 struct nlattr *pat; 9203 int n_patterns = 0; 9204 int rem, pat_len, mask_len, pkt_offset; 9205 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9206 9207 regular = true; 9208 9209 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9210 rem) 9211 n_patterns++; 9212 if (n_patterns > wowlan->n_patterns) 9213 return -EINVAL; 9214 9215 new_triggers.patterns = kcalloc(n_patterns, 9216 sizeof(new_triggers.patterns[0]), 9217 GFP_KERNEL); 9218 if (!new_triggers.patterns) 9219 return -ENOMEM; 9220 9221 new_triggers.n_patterns = n_patterns; 9222 i = 0; 9223 9224 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9225 rem) { 9226 u8 *mask_pat; 9227 9228 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9229 nla_len(pat), NULL); 9230 err = -EINVAL; 9231 if (!pat_tb[NL80211_PKTPAT_MASK] || 9232 !pat_tb[NL80211_PKTPAT_PATTERN]) 9233 goto error; 9234 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9235 mask_len = DIV_ROUND_UP(pat_len, 8); 9236 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9237 goto error; 9238 if (pat_len > wowlan->pattern_max_len || 9239 pat_len < wowlan->pattern_min_len) 9240 goto error; 9241 9242 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9243 pkt_offset = 0; 9244 else 9245 pkt_offset = nla_get_u32( 9246 pat_tb[NL80211_PKTPAT_OFFSET]); 9247 if (pkt_offset > wowlan->max_pkt_offset) 9248 goto error; 9249 new_triggers.patterns[i].pkt_offset = pkt_offset; 9250 9251 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9252 if (!mask_pat) { 9253 err = -ENOMEM; 9254 goto error; 9255 } 9256 new_triggers.patterns[i].mask = mask_pat; 9257 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9258 mask_len); 9259 mask_pat += mask_len; 9260 new_triggers.patterns[i].pattern = mask_pat; 9261 new_triggers.patterns[i].pattern_len = pat_len; 9262 memcpy(mask_pat, 9263 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9264 pat_len); 9265 i++; 9266 } 9267 } 9268 9269 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 9270 regular = true; 9271 err = nl80211_parse_wowlan_tcp( 9272 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 9273 &new_triggers); 9274 if (err) 9275 goto error; 9276 } 9277 9278 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 9279 regular = true; 9280 err = nl80211_parse_wowlan_nd( 9281 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 9282 &new_triggers); 9283 if (err) 9284 goto error; 9285 } 9286 9287 /* The 'any' trigger means the device continues operating more or less 9288 * as in its normal operation mode and wakes up the host on most of the 9289 * normal interrupts (like packet RX, ...) 9290 * It therefore makes little sense to combine with the more constrained 9291 * wakeup trigger modes. 9292 */ 9293 if (new_triggers.any && regular) { 9294 err = -EINVAL; 9295 goto error; 9296 } 9297 9298 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9299 if (!ntrig) { 9300 err = -ENOMEM; 9301 goto error; 9302 } 9303 cfg80211_rdev_free_wowlan(rdev); 9304 rdev->wiphy.wowlan_config = ntrig; 9305 9306 set_wakeup: 9307 if (rdev->ops->set_wakeup && 9308 prev_enabled != !!rdev->wiphy.wowlan_config) 9309 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9310 9311 return 0; 9312 error: 9313 for (i = 0; i < new_triggers.n_patterns; i++) 9314 kfree(new_triggers.patterns[i].mask); 9315 kfree(new_triggers.patterns); 9316 if (new_triggers.tcp && new_triggers.tcp->sock) 9317 sock_release(new_triggers.tcp->sock); 9318 kfree(new_triggers.tcp); 9319 return err; 9320} 9321#endif 9322 9323static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9324 struct cfg80211_registered_device *rdev) 9325{ 9326 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9327 int i, j, pat_len; 9328 struct cfg80211_coalesce_rules *rule; 9329 9330 if (!rdev->coalesce->n_rules) 9331 return 0; 9332 9333 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9334 if (!nl_rules) 9335 return -ENOBUFS; 9336 9337 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9338 nl_rule = nla_nest_start(msg, i + 1); 9339 if (!nl_rule) 9340 return -ENOBUFS; 9341 9342 rule = &rdev->coalesce->rules[i]; 9343 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9344 rule->delay)) 9345 return -ENOBUFS; 9346 9347 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9348 rule->condition)) 9349 return -ENOBUFS; 9350 9351 nl_pats = nla_nest_start(msg, 9352 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9353 if (!nl_pats) 9354 return -ENOBUFS; 9355 9356 for (j = 0; j < rule->n_patterns; j++) { 9357 nl_pat = nla_nest_start(msg, j + 1); 9358 if (!nl_pat) 9359 return -ENOBUFS; 9360 pat_len = rule->patterns[j].pattern_len; 9361 if (nla_put(msg, NL80211_PKTPAT_MASK, 9362 DIV_ROUND_UP(pat_len, 8), 9363 rule->patterns[j].mask) || 9364 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9365 rule->patterns[j].pattern) || 9366 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9367 rule->patterns[j].pkt_offset)) 9368 return -ENOBUFS; 9369 nla_nest_end(msg, nl_pat); 9370 } 9371 nla_nest_end(msg, nl_pats); 9372 nla_nest_end(msg, nl_rule); 9373 } 9374 nla_nest_end(msg, nl_rules); 9375 9376 return 0; 9377} 9378 9379static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9380{ 9381 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9382 struct sk_buff *msg; 9383 void *hdr; 9384 9385 if (!rdev->wiphy.coalesce) 9386 return -EOPNOTSUPP; 9387 9388 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9389 if (!msg) 9390 return -ENOMEM; 9391 9392 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9393 NL80211_CMD_GET_COALESCE); 9394 if (!hdr) 9395 goto nla_put_failure; 9396 9397 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9398 goto nla_put_failure; 9399 9400 genlmsg_end(msg, hdr); 9401 return genlmsg_reply(msg, info); 9402 9403nla_put_failure: 9404 nlmsg_free(msg); 9405 return -ENOBUFS; 9406} 9407 9408void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9409{ 9410 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9411 int i, j; 9412 struct cfg80211_coalesce_rules *rule; 9413 9414 if (!coalesce) 9415 return; 9416 9417 for (i = 0; i < coalesce->n_rules; i++) { 9418 rule = &coalesce->rules[i]; 9419 for (j = 0; j < rule->n_patterns; j++) 9420 kfree(rule->patterns[j].mask); 9421 kfree(rule->patterns); 9422 } 9423 kfree(coalesce->rules); 9424 kfree(coalesce); 9425 rdev->coalesce = NULL; 9426} 9427 9428static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 9429 struct nlattr *rule, 9430 struct cfg80211_coalesce_rules *new_rule) 9431{ 9432 int err, i; 9433 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9434 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 9435 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 9436 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9437 9438 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 9439 nla_len(rule), nl80211_coalesce_policy); 9440 if (err) 9441 return err; 9442 9443 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 9444 new_rule->delay = 9445 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 9446 if (new_rule->delay > coalesce->max_delay) 9447 return -EINVAL; 9448 9449 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 9450 new_rule->condition = 9451 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 9452 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 9453 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 9454 return -EINVAL; 9455 9456 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 9457 return -EINVAL; 9458 9459 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9460 rem) 9461 n_patterns++; 9462 if (n_patterns > coalesce->n_patterns) 9463 return -EINVAL; 9464 9465 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 9466 GFP_KERNEL); 9467 if (!new_rule->patterns) 9468 return -ENOMEM; 9469 9470 new_rule->n_patterns = n_patterns; 9471 i = 0; 9472 9473 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9474 rem) { 9475 u8 *mask_pat; 9476 9477 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9478 nla_len(pat), NULL); 9479 if (!pat_tb[NL80211_PKTPAT_MASK] || 9480 !pat_tb[NL80211_PKTPAT_PATTERN]) 9481 return -EINVAL; 9482 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9483 mask_len = DIV_ROUND_UP(pat_len, 8); 9484 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9485 return -EINVAL; 9486 if (pat_len > coalesce->pattern_max_len || 9487 pat_len < coalesce->pattern_min_len) 9488 return -EINVAL; 9489 9490 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9491 pkt_offset = 0; 9492 else 9493 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 9494 if (pkt_offset > coalesce->max_pkt_offset) 9495 return -EINVAL; 9496 new_rule->patterns[i].pkt_offset = pkt_offset; 9497 9498 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9499 if (!mask_pat) 9500 return -ENOMEM; 9501 9502 new_rule->patterns[i].mask = mask_pat; 9503 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9504 mask_len); 9505 9506 mask_pat += mask_len; 9507 new_rule->patterns[i].pattern = mask_pat; 9508 new_rule->patterns[i].pattern_len = pat_len; 9509 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9510 pat_len); 9511 i++; 9512 } 9513 9514 return 0; 9515} 9516 9517static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 9518{ 9519 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9520 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9521 struct cfg80211_coalesce new_coalesce = {}; 9522 struct cfg80211_coalesce *n_coalesce; 9523 int err, rem_rule, n_rules = 0, i, j; 9524 struct nlattr *rule; 9525 struct cfg80211_coalesce_rules *tmp_rule; 9526 9527 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 9528 return -EOPNOTSUPP; 9529 9530 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 9531 cfg80211_rdev_free_coalesce(rdev); 9532 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 9533 return 0; 9534 } 9535 9536 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9537 rem_rule) 9538 n_rules++; 9539 if (n_rules > coalesce->n_rules) 9540 return -EINVAL; 9541 9542 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 9543 GFP_KERNEL); 9544 if (!new_coalesce.rules) 9545 return -ENOMEM; 9546 9547 new_coalesce.n_rules = n_rules; 9548 i = 0; 9549 9550 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9551 rem_rule) { 9552 err = nl80211_parse_coalesce_rule(rdev, rule, 9553 &new_coalesce.rules[i]); 9554 if (err) 9555 goto error; 9556 9557 i++; 9558 } 9559 9560 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 9561 if (err) 9562 goto error; 9563 9564 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 9565 if (!n_coalesce) { 9566 err = -ENOMEM; 9567 goto error; 9568 } 9569 cfg80211_rdev_free_coalesce(rdev); 9570 rdev->coalesce = n_coalesce; 9571 9572 return 0; 9573error: 9574 for (i = 0; i < new_coalesce.n_rules; i++) { 9575 tmp_rule = &new_coalesce.rules[i]; 9576 for (j = 0; j < tmp_rule->n_patterns; j++) 9577 kfree(tmp_rule->patterns[j].mask); 9578 kfree(tmp_rule->patterns); 9579 } 9580 kfree(new_coalesce.rules); 9581 9582 return err; 9583} 9584 9585static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 9586{ 9587 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9588 struct net_device *dev = info->user_ptr[1]; 9589 struct wireless_dev *wdev = dev->ieee80211_ptr; 9590 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 9591 struct cfg80211_gtk_rekey_data rekey_data; 9592 int err; 9593 9594 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 9595 return -EINVAL; 9596 9597 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 9598 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 9599 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 9600 nl80211_rekey_policy); 9601 if (err) 9602 return err; 9603 9604 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 9605 return -ERANGE; 9606 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 9607 return -ERANGE; 9608 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 9609 return -ERANGE; 9610 9611 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 9612 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 9613 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 9614 9615 wdev_lock(wdev); 9616 if (!wdev->current_bss) { 9617 err = -ENOTCONN; 9618 goto out; 9619 } 9620 9621 if (!rdev->ops->set_rekey_data) { 9622 err = -EOPNOTSUPP; 9623 goto out; 9624 } 9625 9626 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 9627 out: 9628 wdev_unlock(wdev); 9629 return err; 9630} 9631 9632static int nl80211_register_unexpected_frame(struct sk_buff *skb, 9633 struct genl_info *info) 9634{ 9635 struct net_device *dev = info->user_ptr[1]; 9636 struct wireless_dev *wdev = dev->ieee80211_ptr; 9637 9638 if (wdev->iftype != NL80211_IFTYPE_AP && 9639 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9640 return -EINVAL; 9641 9642 if (wdev->ap_unexpected_nlportid) 9643 return -EBUSY; 9644 9645 wdev->ap_unexpected_nlportid = info->snd_portid; 9646 return 0; 9647} 9648 9649static int nl80211_probe_client(struct sk_buff *skb, 9650 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 struct wireless_dev *wdev = dev->ieee80211_ptr; 9655 struct sk_buff *msg; 9656 void *hdr; 9657 const u8 *addr; 9658 u64 cookie; 9659 int err; 9660 9661 if (wdev->iftype != NL80211_IFTYPE_AP && 9662 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9663 return -EOPNOTSUPP; 9664 9665 if (!info->attrs[NL80211_ATTR_MAC]) 9666 return -EINVAL; 9667 9668 if (!rdev->ops->probe_client) 9669 return -EOPNOTSUPP; 9670 9671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9672 if (!msg) 9673 return -ENOMEM; 9674 9675 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9676 NL80211_CMD_PROBE_CLIENT); 9677 if (!hdr) { 9678 err = -ENOBUFS; 9679 goto free_msg; 9680 } 9681 9682 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9683 9684 err = rdev_probe_client(rdev, dev, addr, &cookie); 9685 if (err) 9686 goto free_msg; 9687 9688 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9689 goto nla_put_failure; 9690 9691 genlmsg_end(msg, hdr); 9692 9693 return genlmsg_reply(msg, info); 9694 9695 nla_put_failure: 9696 err = -ENOBUFS; 9697 free_msg: 9698 nlmsg_free(msg); 9699 return err; 9700} 9701 9702static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 9703{ 9704 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9705 struct cfg80211_beacon_registration *reg, *nreg; 9706 int rv; 9707 9708 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 9709 return -EOPNOTSUPP; 9710 9711 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 9712 if (!nreg) 9713 return -ENOMEM; 9714 9715 /* First, check if already registered. */ 9716 spin_lock_bh(&rdev->beacon_registrations_lock); 9717 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 9718 if (reg->nlportid == info->snd_portid) { 9719 rv = -EALREADY; 9720 goto out_err; 9721 } 9722 } 9723 /* Add it to the list */ 9724 nreg->nlportid = info->snd_portid; 9725 list_add(&nreg->list, &rdev->beacon_registrations); 9726 9727 spin_unlock_bh(&rdev->beacon_registrations_lock); 9728 9729 return 0; 9730out_err: 9731 spin_unlock_bh(&rdev->beacon_registrations_lock); 9732 kfree(nreg); 9733 return rv; 9734} 9735 9736static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 9737{ 9738 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9739 struct wireless_dev *wdev = info->user_ptr[1]; 9740 int err; 9741 9742 if (!rdev->ops->start_p2p_device) 9743 return -EOPNOTSUPP; 9744 9745 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9746 return -EOPNOTSUPP; 9747 9748 if (wdev->p2p_started) 9749 return 0; 9750 9751 if (rfkill_blocked(rdev->rfkill)) 9752 return -ERFKILL; 9753 9754 err = rdev_start_p2p_device(rdev, wdev); 9755 if (err) 9756 return err; 9757 9758 wdev->p2p_started = true; 9759 rdev->opencount++; 9760 9761 return 0; 9762} 9763 9764static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 9765{ 9766 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9767 struct wireless_dev *wdev = info->user_ptr[1]; 9768 9769 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9770 return -EOPNOTSUPP; 9771 9772 if (!rdev->ops->stop_p2p_device) 9773 return -EOPNOTSUPP; 9774 9775 cfg80211_stop_p2p_device(rdev, wdev); 9776 9777 return 0; 9778} 9779 9780static int nl80211_get_protocol_features(struct sk_buff *skb, 9781 struct genl_info *info) 9782{ 9783 void *hdr; 9784 struct sk_buff *msg; 9785 9786 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9787 if (!msg) 9788 return -ENOMEM; 9789 9790 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9791 NL80211_CMD_GET_PROTOCOL_FEATURES); 9792 if (!hdr) 9793 goto nla_put_failure; 9794 9795 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 9796 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 9797 goto nla_put_failure; 9798 9799 genlmsg_end(msg, hdr); 9800 return genlmsg_reply(msg, info); 9801 9802 nla_put_failure: 9803 kfree_skb(msg); 9804 return -ENOBUFS; 9805} 9806 9807static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 9808{ 9809 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9810 struct cfg80211_update_ft_ies_params ft_params; 9811 struct net_device *dev = info->user_ptr[1]; 9812 9813 if (!rdev->ops->update_ft_ies) 9814 return -EOPNOTSUPP; 9815 9816 if (!info->attrs[NL80211_ATTR_MDID] || 9817 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9818 return -EINVAL; 9819 9820 memset(&ft_params, 0, sizeof(ft_params)); 9821 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 9822 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9823 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9824 9825 return rdev_update_ft_ies(rdev, dev, &ft_params); 9826} 9827 9828static int nl80211_crit_protocol_start(struct sk_buff *skb, 9829 struct genl_info *info) 9830{ 9831 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9832 struct wireless_dev *wdev = info->user_ptr[1]; 9833 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 9834 u16 duration; 9835 int ret; 9836 9837 if (!rdev->ops->crit_proto_start) 9838 return -EOPNOTSUPP; 9839 9840 if (WARN_ON(!rdev->ops->crit_proto_stop)) 9841 return -EINVAL; 9842 9843 if (rdev->crit_proto_nlportid) 9844 return -EBUSY; 9845 9846 /* determine protocol if provided */ 9847 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 9848 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 9849 9850 if (proto >= NUM_NL80211_CRIT_PROTO) 9851 return -EINVAL; 9852 9853 /* timeout must be provided */ 9854 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 9855 return -EINVAL; 9856 9857 duration = 9858 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 9859 9860 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 9861 return -ERANGE; 9862 9863 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 9864 if (!ret) 9865 rdev->crit_proto_nlportid = info->snd_portid; 9866 9867 return ret; 9868} 9869 9870static int nl80211_crit_protocol_stop(struct sk_buff *skb, 9871 struct genl_info *info) 9872{ 9873 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9874 struct wireless_dev *wdev = info->user_ptr[1]; 9875 9876 if (!rdev->ops->crit_proto_stop) 9877 return -EOPNOTSUPP; 9878 9879 if (rdev->crit_proto_nlportid) { 9880 rdev->crit_proto_nlportid = 0; 9881 rdev_crit_proto_stop(rdev, wdev); 9882 } 9883 return 0; 9884} 9885 9886static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 9887{ 9888 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9889 struct wireless_dev *wdev = 9890 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 9891 int i, err; 9892 u32 vid, subcmd; 9893 9894 if (!rdev->wiphy.vendor_commands) 9895 return -EOPNOTSUPP; 9896 9897 if (IS_ERR(wdev)) { 9898 err = PTR_ERR(wdev); 9899 if (err != -EINVAL) 9900 return err; 9901 wdev = NULL; 9902 } else if (wdev->wiphy != &rdev->wiphy) { 9903 return -EINVAL; 9904 } 9905 9906 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 9907 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 9908 return -EINVAL; 9909 9910 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 9911 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 9912 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 9913 const struct wiphy_vendor_command *vcmd; 9914 void *data = NULL; 9915 int len = 0; 9916 9917 vcmd = &rdev->wiphy.vendor_commands[i]; 9918 9919 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 9920 continue; 9921 9922 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 9923 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 9924 if (!wdev) 9925 return -EINVAL; 9926 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 9927 !wdev->netdev) 9928 return -EINVAL; 9929 9930 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 9931 if (wdev->netdev && 9932 !netif_running(wdev->netdev)) 9933 return -ENETDOWN; 9934 if (!wdev->netdev && !wdev->p2p_started) 9935 return -ENETDOWN; 9936 } 9937 } else { 9938 wdev = NULL; 9939 } 9940 9941 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 9942 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9943 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9944 } 9945 9946 rdev->cur_cmd_info = info; 9947 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 9948 data, len); 9949 rdev->cur_cmd_info = NULL; 9950 return err; 9951 } 9952 9953 return -EOPNOTSUPP; 9954} 9955 9956struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 9957 enum nl80211_commands cmd, 9958 enum nl80211_attrs attr, 9959 int approxlen) 9960{ 9961 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 9962 9963 if (WARN_ON(!rdev->cur_cmd_info)) 9964 return NULL; 9965 9966 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 9967 rdev->cur_cmd_info->snd_portid, 9968 rdev->cur_cmd_info->snd_seq, 9969 cmd, attr, NULL, GFP_KERNEL); 9970} 9971EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 9972 9973int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 9974{ 9975 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9976 void *hdr = ((void **)skb->cb)[1]; 9977 struct nlattr *data = ((void **)skb->cb)[2]; 9978 9979 /* clear CB data for netlink core to own from now on */ 9980 memset(skb->cb, 0, sizeof(skb->cb)); 9981 9982 if (WARN_ON(!rdev->cur_cmd_info)) { 9983 kfree_skb(skb); 9984 return -EINVAL; 9985 } 9986 9987 nla_nest_end(skb, data); 9988 genlmsg_end(skb, hdr); 9989 return genlmsg_reply(skb, rdev->cur_cmd_info); 9990} 9991EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 9992 9993 9994static int nl80211_set_qos_map(struct sk_buff *skb, 9995 struct genl_info *info) 9996{ 9997 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9998 struct cfg80211_qos_map *qos_map = NULL; 9999 struct net_device *dev = info->user_ptr[1]; 10000 u8 *pos, len, num_des, des_len, des; 10001 int ret; 10002 10003 if (!rdev->ops->set_qos_map) 10004 return -EOPNOTSUPP; 10005 10006 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 10007 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 10008 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 10009 10010 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 10011 len > IEEE80211_QOS_MAP_LEN_MAX) 10012 return -EINVAL; 10013 10014 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 10015 if (!qos_map) 10016 return -ENOMEM; 10017 10018 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 10019 if (num_des) { 10020 des_len = num_des * 10021 sizeof(struct cfg80211_dscp_exception); 10022 memcpy(qos_map->dscp_exception, pos, des_len); 10023 qos_map->num_des = num_des; 10024 for (des = 0; des < num_des; des++) { 10025 if (qos_map->dscp_exception[des].up > 7) { 10026 kfree(qos_map); 10027 return -EINVAL; 10028 } 10029 } 10030 pos += des_len; 10031 } 10032 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 10033 } 10034 10035 wdev_lock(dev->ieee80211_ptr); 10036 ret = nl80211_key_allowed(dev->ieee80211_ptr); 10037 if (!ret) 10038 ret = rdev_set_qos_map(rdev, dev, qos_map); 10039 wdev_unlock(dev->ieee80211_ptr); 10040 10041 kfree(qos_map); 10042 return ret; 10043} 10044 10045static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 10046{ 10047 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10048 struct net_device *dev = info->user_ptr[1]; 10049 struct wireless_dev *wdev = dev->ieee80211_ptr; 10050 const u8 *peer; 10051 u8 tsid, up; 10052 u16 admitted_time = 0; 10053 int err; 10054 10055 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 10056 return -EOPNOTSUPP; 10057 10058 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 10059 !info->attrs[NL80211_ATTR_USER_PRIO]) 10060 return -EINVAL; 10061 10062 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10063 if (tsid >= IEEE80211_NUM_TIDS) 10064 return -EINVAL; 10065 10066 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 10067 if (up >= IEEE80211_NUM_UPS) 10068 return -EINVAL; 10069 10070 /* WMM uses TIDs 0-7 even for TSPEC */ 10071 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 10072 /* TODO: handle 802.11 TSPEC/admission control 10073 * need more attributes for that (e.g. BA session requirement); 10074 * change the WMM adminssion test above to allow both then 10075 */ 10076 return -EINVAL; 10077 } 10078 10079 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10080 10081 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 10082 admitted_time = 10083 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 10084 if (!admitted_time) 10085 return -EINVAL; 10086 } 10087 10088 wdev_lock(wdev); 10089 switch (wdev->iftype) { 10090 case NL80211_IFTYPE_STATION: 10091 case NL80211_IFTYPE_P2P_CLIENT: 10092 if (wdev->current_bss) 10093 break; 10094 err = -ENOTCONN; 10095 goto out; 10096 default: 10097 err = -EOPNOTSUPP; 10098 goto out; 10099 } 10100 10101 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 10102 10103 out: 10104 wdev_unlock(wdev); 10105 return err; 10106} 10107 10108static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 10109{ 10110 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10111 struct net_device *dev = info->user_ptr[1]; 10112 struct wireless_dev *wdev = dev->ieee80211_ptr; 10113 const u8 *peer; 10114 u8 tsid; 10115 int err; 10116 10117 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 10118 return -EINVAL; 10119 10120 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10121 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10122 10123 wdev_lock(wdev); 10124 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 10125 wdev_unlock(wdev); 10126 10127 return err; 10128} 10129 10130static int nl80211_tdls_channel_switch(struct sk_buff *skb, 10131 struct genl_info *info) 10132{ 10133 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10134 struct net_device *dev = info->user_ptr[1]; 10135 struct wireless_dev *wdev = dev->ieee80211_ptr; 10136 struct cfg80211_chan_def chandef = {}; 10137 const u8 *addr; 10138 u8 oper_class; 10139 int err; 10140 10141 if (!rdev->ops->tdls_channel_switch || 10142 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10143 return -EOPNOTSUPP; 10144 10145 switch (dev->ieee80211_ptr->iftype) { 10146 case NL80211_IFTYPE_STATION: 10147 case NL80211_IFTYPE_P2P_CLIENT: 10148 break; 10149 default: 10150 return -EOPNOTSUPP; 10151 } 10152 10153 if (!info->attrs[NL80211_ATTR_MAC] || 10154 !info->attrs[NL80211_ATTR_OPER_CLASS]) 10155 return -EINVAL; 10156 10157 err = nl80211_parse_chandef(rdev, info, &chandef); 10158 if (err) 10159 return err; 10160 10161 /* 10162 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 10163 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 10164 * specification is not defined for them. 10165 */ 10166 if (chandef.chan->band == IEEE80211_BAND_2GHZ && 10167 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 10168 chandef.width != NL80211_CHAN_WIDTH_20) 10169 return -EINVAL; 10170 10171 /* we will be active on the TDLS link */ 10172 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype)) 10173 return -EINVAL; 10174 10175 /* don't allow switching to DFS channels */ 10176 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 10177 return -EINVAL; 10178 10179 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10180 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 10181 10182 wdev_lock(wdev); 10183 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 10184 wdev_unlock(wdev); 10185 10186 return err; 10187} 10188 10189static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 10190 struct genl_info *info) 10191{ 10192 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10193 struct net_device *dev = info->user_ptr[1]; 10194 struct wireless_dev *wdev = dev->ieee80211_ptr; 10195 const u8 *addr; 10196 10197 if (!rdev->ops->tdls_channel_switch || 10198 !rdev->ops->tdls_cancel_channel_switch || 10199 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10200 return -EOPNOTSUPP; 10201 10202 switch (dev->ieee80211_ptr->iftype) { 10203 case NL80211_IFTYPE_STATION: 10204 case NL80211_IFTYPE_P2P_CLIENT: 10205 break; 10206 default: 10207 return -EOPNOTSUPP; 10208 } 10209 10210 if (!info->attrs[NL80211_ATTR_MAC]) 10211 return -EINVAL; 10212 10213 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10214 10215 wdev_lock(wdev); 10216 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 10217 wdev_unlock(wdev); 10218 10219 return 0; 10220} 10221 10222#define NL80211_FLAG_NEED_WIPHY 0x01 10223#define NL80211_FLAG_NEED_NETDEV 0x02 10224#define NL80211_FLAG_NEED_RTNL 0x04 10225#define NL80211_FLAG_CHECK_NETDEV_UP 0x08 10226#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 10227 NL80211_FLAG_CHECK_NETDEV_UP) 10228#define NL80211_FLAG_NEED_WDEV 0x10 10229/* If a netdev is associated, it must be UP, P2P must be started */ 10230#define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 10231 NL80211_FLAG_CHECK_NETDEV_UP) 10232#define NL80211_FLAG_CLEAR_SKB 0x20 10233 10234static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 10235 struct genl_info *info) 10236{ 10237 struct cfg80211_registered_device *rdev; 10238 struct wireless_dev *wdev; 10239 struct net_device *dev; 10240 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 10241 10242 if (rtnl) 10243 rtnl_lock(); 10244 10245 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 10246 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 10247 if (IS_ERR(rdev)) { 10248 if (rtnl) 10249 rtnl_unlock(); 10250 return PTR_ERR(rdev); 10251 } 10252 info->user_ptr[0] = rdev; 10253 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 10254 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10255 ASSERT_RTNL(); 10256 10257 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 10258 info->attrs); 10259 if (IS_ERR(wdev)) { 10260 if (rtnl) 10261 rtnl_unlock(); 10262 return PTR_ERR(wdev); 10263 } 10264 10265 dev = wdev->netdev; 10266 rdev = wiphy_to_rdev(wdev->wiphy); 10267 10268 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 10269 if (!dev) { 10270 if (rtnl) 10271 rtnl_unlock(); 10272 return -EINVAL; 10273 } 10274 10275 info->user_ptr[1] = dev; 10276 } else { 10277 info->user_ptr[1] = wdev; 10278 } 10279 10280 if (dev) { 10281 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 10282 !netif_running(dev)) { 10283 if (rtnl) 10284 rtnl_unlock(); 10285 return -ENETDOWN; 10286 } 10287 10288 dev_hold(dev); 10289 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 10290 if (!wdev->p2p_started) { 10291 if (rtnl) 10292 rtnl_unlock(); 10293 return -ENETDOWN; 10294 } 10295 } 10296 10297 info->user_ptr[0] = rdev; 10298 } 10299 10300 return 0; 10301} 10302 10303static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 10304 struct genl_info *info) 10305{ 10306 if (info->user_ptr[1]) { 10307 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10308 struct wireless_dev *wdev = info->user_ptr[1]; 10309 10310 if (wdev->netdev) 10311 dev_put(wdev->netdev); 10312 } else { 10313 dev_put(info->user_ptr[1]); 10314 } 10315 } 10316 10317 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 10318 rtnl_unlock(); 10319 10320 /* If needed, clear the netlink message payload from the SKB 10321 * as it might contain key data that shouldn't stick around on 10322 * the heap after the SKB is freed. The netlink message header 10323 * is still needed for further processing, so leave it intact. 10324 */ 10325 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 10326 struct nlmsghdr *nlh = nlmsg_hdr(skb); 10327 10328 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 10329 } 10330} 10331 10332static const struct genl_ops nl80211_ops[] = { 10333 { 10334 .cmd = NL80211_CMD_GET_WIPHY, 10335 .doit = nl80211_get_wiphy, 10336 .dumpit = nl80211_dump_wiphy, 10337 .done = nl80211_dump_wiphy_done, 10338 .policy = nl80211_policy, 10339 /* can be retrieved by unprivileged users */ 10340 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10341 NL80211_FLAG_NEED_RTNL, 10342 }, 10343 { 10344 .cmd = NL80211_CMD_SET_WIPHY, 10345 .doit = nl80211_set_wiphy, 10346 .policy = nl80211_policy, 10347 .flags = GENL_ADMIN_PERM, 10348 .internal_flags = NL80211_FLAG_NEED_RTNL, 10349 }, 10350 { 10351 .cmd = NL80211_CMD_GET_INTERFACE, 10352 .doit = nl80211_get_interface, 10353 .dumpit = nl80211_dump_interface, 10354 .policy = nl80211_policy, 10355 /* can be retrieved by unprivileged users */ 10356 .internal_flags = NL80211_FLAG_NEED_WDEV | 10357 NL80211_FLAG_NEED_RTNL, 10358 }, 10359 { 10360 .cmd = NL80211_CMD_SET_INTERFACE, 10361 .doit = nl80211_set_interface, 10362 .policy = nl80211_policy, 10363 .flags = GENL_ADMIN_PERM, 10364 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10365 NL80211_FLAG_NEED_RTNL, 10366 }, 10367 { 10368 .cmd = NL80211_CMD_NEW_INTERFACE, 10369 .doit = nl80211_new_interface, 10370 .policy = nl80211_policy, 10371 .flags = GENL_ADMIN_PERM, 10372 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10373 NL80211_FLAG_NEED_RTNL, 10374 }, 10375 { 10376 .cmd = NL80211_CMD_DEL_INTERFACE, 10377 .doit = nl80211_del_interface, 10378 .policy = nl80211_policy, 10379 .flags = GENL_ADMIN_PERM, 10380 .internal_flags = NL80211_FLAG_NEED_WDEV | 10381 NL80211_FLAG_NEED_RTNL, 10382 }, 10383 { 10384 .cmd = NL80211_CMD_GET_KEY, 10385 .doit = nl80211_get_key, 10386 .policy = nl80211_policy, 10387 .flags = GENL_ADMIN_PERM, 10388 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10389 NL80211_FLAG_NEED_RTNL, 10390 }, 10391 { 10392 .cmd = NL80211_CMD_SET_KEY, 10393 .doit = nl80211_set_key, 10394 .policy = nl80211_policy, 10395 .flags = GENL_ADMIN_PERM, 10396 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10397 NL80211_FLAG_NEED_RTNL | 10398 NL80211_FLAG_CLEAR_SKB, 10399 }, 10400 { 10401 .cmd = NL80211_CMD_NEW_KEY, 10402 .doit = nl80211_new_key, 10403 .policy = nl80211_policy, 10404 .flags = GENL_ADMIN_PERM, 10405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10406 NL80211_FLAG_NEED_RTNL | 10407 NL80211_FLAG_CLEAR_SKB, 10408 }, 10409 { 10410 .cmd = NL80211_CMD_DEL_KEY, 10411 .doit = nl80211_del_key, 10412 .policy = nl80211_policy, 10413 .flags = GENL_ADMIN_PERM, 10414 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10415 NL80211_FLAG_NEED_RTNL, 10416 }, 10417 { 10418 .cmd = NL80211_CMD_SET_BEACON, 10419 .policy = nl80211_policy, 10420 .flags = GENL_ADMIN_PERM, 10421 .doit = nl80211_set_beacon, 10422 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10423 NL80211_FLAG_NEED_RTNL, 10424 }, 10425 { 10426 .cmd = NL80211_CMD_START_AP, 10427 .policy = nl80211_policy, 10428 .flags = GENL_ADMIN_PERM, 10429 .doit = nl80211_start_ap, 10430 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10431 NL80211_FLAG_NEED_RTNL, 10432 }, 10433 { 10434 .cmd = NL80211_CMD_STOP_AP, 10435 .policy = nl80211_policy, 10436 .flags = GENL_ADMIN_PERM, 10437 .doit = nl80211_stop_ap, 10438 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10439 NL80211_FLAG_NEED_RTNL, 10440 }, 10441 { 10442 .cmd = NL80211_CMD_GET_STATION, 10443 .doit = nl80211_get_station, 10444 .dumpit = nl80211_dump_station, 10445 .policy = nl80211_policy, 10446 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10447 NL80211_FLAG_NEED_RTNL, 10448 }, 10449 { 10450 .cmd = NL80211_CMD_SET_STATION, 10451 .doit = nl80211_set_station, 10452 .policy = nl80211_policy, 10453 .flags = GENL_ADMIN_PERM, 10454 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10455 NL80211_FLAG_NEED_RTNL, 10456 }, 10457 { 10458 .cmd = NL80211_CMD_NEW_STATION, 10459 .doit = nl80211_new_station, 10460 .policy = nl80211_policy, 10461 .flags = GENL_ADMIN_PERM, 10462 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10463 NL80211_FLAG_NEED_RTNL, 10464 }, 10465 { 10466 .cmd = NL80211_CMD_DEL_STATION, 10467 .doit = nl80211_del_station, 10468 .policy = nl80211_policy, 10469 .flags = GENL_ADMIN_PERM, 10470 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10471 NL80211_FLAG_NEED_RTNL, 10472 }, 10473 { 10474 .cmd = NL80211_CMD_GET_MPATH, 10475 .doit = nl80211_get_mpath, 10476 .dumpit = nl80211_dump_mpath, 10477 .policy = nl80211_policy, 10478 .flags = GENL_ADMIN_PERM, 10479 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10480 NL80211_FLAG_NEED_RTNL, 10481 }, 10482 { 10483 .cmd = NL80211_CMD_GET_MPP, 10484 .doit = nl80211_get_mpp, 10485 .dumpit = nl80211_dump_mpp, 10486 .policy = nl80211_policy, 10487 .flags = GENL_ADMIN_PERM, 10488 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10489 NL80211_FLAG_NEED_RTNL, 10490 }, 10491 { 10492 .cmd = NL80211_CMD_SET_MPATH, 10493 .doit = nl80211_set_mpath, 10494 .policy = nl80211_policy, 10495 .flags = GENL_ADMIN_PERM, 10496 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10497 NL80211_FLAG_NEED_RTNL, 10498 }, 10499 { 10500 .cmd = NL80211_CMD_NEW_MPATH, 10501 .doit = nl80211_new_mpath, 10502 .policy = nl80211_policy, 10503 .flags = GENL_ADMIN_PERM, 10504 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10505 NL80211_FLAG_NEED_RTNL, 10506 }, 10507 { 10508 .cmd = NL80211_CMD_DEL_MPATH, 10509 .doit = nl80211_del_mpath, 10510 .policy = nl80211_policy, 10511 .flags = GENL_ADMIN_PERM, 10512 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10513 NL80211_FLAG_NEED_RTNL, 10514 }, 10515 { 10516 .cmd = NL80211_CMD_SET_BSS, 10517 .doit = nl80211_set_bss, 10518 .policy = nl80211_policy, 10519 .flags = GENL_ADMIN_PERM, 10520 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10521 NL80211_FLAG_NEED_RTNL, 10522 }, 10523 { 10524 .cmd = NL80211_CMD_GET_REG, 10525 .doit = nl80211_get_reg_do, 10526 .dumpit = nl80211_get_reg_dump, 10527 .policy = nl80211_policy, 10528 .internal_flags = NL80211_FLAG_NEED_RTNL, 10529 /* can be retrieved by unprivileged users */ 10530 }, 10531 { 10532 .cmd = NL80211_CMD_SET_REG, 10533 .doit = nl80211_set_reg, 10534 .policy = nl80211_policy, 10535 .flags = GENL_ADMIN_PERM, 10536 .internal_flags = NL80211_FLAG_NEED_RTNL, 10537 }, 10538 { 10539 .cmd = NL80211_CMD_REQ_SET_REG, 10540 .doit = nl80211_req_set_reg, 10541 .policy = nl80211_policy, 10542 .flags = GENL_ADMIN_PERM, 10543 }, 10544 { 10545 .cmd = NL80211_CMD_GET_MESH_CONFIG, 10546 .doit = nl80211_get_mesh_config, 10547 .policy = nl80211_policy, 10548 /* can be retrieved by unprivileged users */ 10549 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10550 NL80211_FLAG_NEED_RTNL, 10551 }, 10552 { 10553 .cmd = NL80211_CMD_SET_MESH_CONFIG, 10554 .doit = nl80211_update_mesh_config, 10555 .policy = nl80211_policy, 10556 .flags = GENL_ADMIN_PERM, 10557 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10558 NL80211_FLAG_NEED_RTNL, 10559 }, 10560 { 10561 .cmd = NL80211_CMD_TRIGGER_SCAN, 10562 .doit = nl80211_trigger_scan, 10563 .policy = nl80211_policy, 10564 .flags = GENL_ADMIN_PERM, 10565 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10566 NL80211_FLAG_NEED_RTNL, 10567 }, 10568 { 10569 .cmd = NL80211_CMD_GET_SCAN, 10570 .policy = nl80211_policy, 10571 .dumpit = nl80211_dump_scan, 10572 }, 10573 { 10574 .cmd = NL80211_CMD_START_SCHED_SCAN, 10575 .doit = nl80211_start_sched_scan, 10576 .policy = nl80211_policy, 10577 .flags = GENL_ADMIN_PERM, 10578 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10579 NL80211_FLAG_NEED_RTNL, 10580 }, 10581 { 10582 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 10583 .doit = nl80211_stop_sched_scan, 10584 .policy = nl80211_policy, 10585 .flags = GENL_ADMIN_PERM, 10586 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10587 NL80211_FLAG_NEED_RTNL, 10588 }, 10589 { 10590 .cmd = NL80211_CMD_AUTHENTICATE, 10591 .doit = nl80211_authenticate, 10592 .policy = nl80211_policy, 10593 .flags = GENL_ADMIN_PERM, 10594 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10595 NL80211_FLAG_NEED_RTNL | 10596 NL80211_FLAG_CLEAR_SKB, 10597 }, 10598 { 10599 .cmd = NL80211_CMD_ASSOCIATE, 10600 .doit = nl80211_associate, 10601 .policy = nl80211_policy, 10602 .flags = GENL_ADMIN_PERM, 10603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10604 NL80211_FLAG_NEED_RTNL, 10605 }, 10606 { 10607 .cmd = NL80211_CMD_DEAUTHENTICATE, 10608 .doit = nl80211_deauthenticate, 10609 .policy = nl80211_policy, 10610 .flags = GENL_ADMIN_PERM, 10611 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10612 NL80211_FLAG_NEED_RTNL, 10613 }, 10614 { 10615 .cmd = NL80211_CMD_DISASSOCIATE, 10616 .doit = nl80211_disassociate, 10617 .policy = nl80211_policy, 10618 .flags = GENL_ADMIN_PERM, 10619 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10620 NL80211_FLAG_NEED_RTNL, 10621 }, 10622 { 10623 .cmd = NL80211_CMD_JOIN_IBSS, 10624 .doit = nl80211_join_ibss, 10625 .policy = nl80211_policy, 10626 .flags = GENL_ADMIN_PERM, 10627 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10628 NL80211_FLAG_NEED_RTNL, 10629 }, 10630 { 10631 .cmd = NL80211_CMD_LEAVE_IBSS, 10632 .doit = nl80211_leave_ibss, 10633 .policy = nl80211_policy, 10634 .flags = GENL_ADMIN_PERM, 10635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10636 NL80211_FLAG_NEED_RTNL, 10637 }, 10638#ifdef CONFIG_NL80211_TESTMODE 10639 { 10640 .cmd = NL80211_CMD_TESTMODE, 10641 .doit = nl80211_testmode_do, 10642 .dumpit = nl80211_testmode_dump, 10643 .policy = nl80211_policy, 10644 .flags = GENL_ADMIN_PERM, 10645 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10646 NL80211_FLAG_NEED_RTNL, 10647 }, 10648#endif 10649 { 10650 .cmd = NL80211_CMD_CONNECT, 10651 .doit = nl80211_connect, 10652 .policy = nl80211_policy, 10653 .flags = GENL_ADMIN_PERM, 10654 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10655 NL80211_FLAG_NEED_RTNL, 10656 }, 10657 { 10658 .cmd = NL80211_CMD_DISCONNECT, 10659 .doit = nl80211_disconnect, 10660 .policy = nl80211_policy, 10661 .flags = GENL_ADMIN_PERM, 10662 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10663 NL80211_FLAG_NEED_RTNL, 10664 }, 10665 { 10666 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 10667 .doit = nl80211_wiphy_netns, 10668 .policy = nl80211_policy, 10669 .flags = GENL_ADMIN_PERM, 10670 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10671 NL80211_FLAG_NEED_RTNL, 10672 }, 10673 { 10674 .cmd = NL80211_CMD_GET_SURVEY, 10675 .policy = nl80211_policy, 10676 .dumpit = nl80211_dump_survey, 10677 }, 10678 { 10679 .cmd = NL80211_CMD_SET_PMKSA, 10680 .doit = nl80211_setdel_pmksa, 10681 .policy = nl80211_policy, 10682 .flags = GENL_ADMIN_PERM, 10683 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10684 NL80211_FLAG_NEED_RTNL, 10685 }, 10686 { 10687 .cmd = NL80211_CMD_DEL_PMKSA, 10688 .doit = nl80211_setdel_pmksa, 10689 .policy = nl80211_policy, 10690 .flags = GENL_ADMIN_PERM, 10691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10692 NL80211_FLAG_NEED_RTNL, 10693 }, 10694 { 10695 .cmd = NL80211_CMD_FLUSH_PMKSA, 10696 .doit = nl80211_flush_pmksa, 10697 .policy = nl80211_policy, 10698 .flags = GENL_ADMIN_PERM, 10699 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10700 NL80211_FLAG_NEED_RTNL, 10701 }, 10702 { 10703 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 10704 .doit = nl80211_remain_on_channel, 10705 .policy = nl80211_policy, 10706 .flags = GENL_ADMIN_PERM, 10707 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10708 NL80211_FLAG_NEED_RTNL, 10709 }, 10710 { 10711 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10712 .doit = nl80211_cancel_remain_on_channel, 10713 .policy = nl80211_policy, 10714 .flags = GENL_ADMIN_PERM, 10715 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10716 NL80211_FLAG_NEED_RTNL, 10717 }, 10718 { 10719 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 10720 .doit = nl80211_set_tx_bitrate_mask, 10721 .policy = nl80211_policy, 10722 .flags = GENL_ADMIN_PERM, 10723 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10724 NL80211_FLAG_NEED_RTNL, 10725 }, 10726 { 10727 .cmd = NL80211_CMD_REGISTER_FRAME, 10728 .doit = nl80211_register_mgmt, 10729 .policy = nl80211_policy, 10730 .flags = GENL_ADMIN_PERM, 10731 .internal_flags = NL80211_FLAG_NEED_WDEV | 10732 NL80211_FLAG_NEED_RTNL, 10733 }, 10734 { 10735 .cmd = NL80211_CMD_FRAME, 10736 .doit = nl80211_tx_mgmt, 10737 .policy = nl80211_policy, 10738 .flags = GENL_ADMIN_PERM, 10739 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10740 NL80211_FLAG_NEED_RTNL, 10741 }, 10742 { 10743 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 10744 .doit = nl80211_tx_mgmt_cancel_wait, 10745 .policy = nl80211_policy, 10746 .flags = GENL_ADMIN_PERM, 10747 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10748 NL80211_FLAG_NEED_RTNL, 10749 }, 10750 { 10751 .cmd = NL80211_CMD_SET_POWER_SAVE, 10752 .doit = nl80211_set_power_save, 10753 .policy = nl80211_policy, 10754 .flags = GENL_ADMIN_PERM, 10755 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10756 NL80211_FLAG_NEED_RTNL, 10757 }, 10758 { 10759 .cmd = NL80211_CMD_GET_POWER_SAVE, 10760 .doit = nl80211_get_power_save, 10761 .policy = nl80211_policy, 10762 /* can be retrieved by unprivileged users */ 10763 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10764 NL80211_FLAG_NEED_RTNL, 10765 }, 10766 { 10767 .cmd = NL80211_CMD_SET_CQM, 10768 .doit = nl80211_set_cqm, 10769 .policy = nl80211_policy, 10770 .flags = GENL_ADMIN_PERM, 10771 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10772 NL80211_FLAG_NEED_RTNL, 10773 }, 10774 { 10775 .cmd = NL80211_CMD_SET_CHANNEL, 10776 .doit = nl80211_set_channel, 10777 .policy = nl80211_policy, 10778 .flags = GENL_ADMIN_PERM, 10779 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10780 NL80211_FLAG_NEED_RTNL, 10781 }, 10782 { 10783 .cmd = NL80211_CMD_SET_WDS_PEER, 10784 .doit = nl80211_set_wds_peer, 10785 .policy = nl80211_policy, 10786 .flags = GENL_ADMIN_PERM, 10787 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10788 NL80211_FLAG_NEED_RTNL, 10789 }, 10790 { 10791 .cmd = NL80211_CMD_JOIN_MESH, 10792 .doit = nl80211_join_mesh, 10793 .policy = nl80211_policy, 10794 .flags = GENL_ADMIN_PERM, 10795 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10796 NL80211_FLAG_NEED_RTNL, 10797 }, 10798 { 10799 .cmd = NL80211_CMD_LEAVE_MESH, 10800 .doit = nl80211_leave_mesh, 10801 .policy = nl80211_policy, 10802 .flags = GENL_ADMIN_PERM, 10803 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10804 NL80211_FLAG_NEED_RTNL, 10805 }, 10806 { 10807 .cmd = NL80211_CMD_JOIN_OCB, 10808 .doit = nl80211_join_ocb, 10809 .policy = nl80211_policy, 10810 .flags = GENL_ADMIN_PERM, 10811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10812 NL80211_FLAG_NEED_RTNL, 10813 }, 10814 { 10815 .cmd = NL80211_CMD_LEAVE_OCB, 10816 .doit = nl80211_leave_ocb, 10817 .policy = nl80211_policy, 10818 .flags = GENL_ADMIN_PERM, 10819 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10820 NL80211_FLAG_NEED_RTNL, 10821 }, 10822#ifdef CONFIG_PM 10823 { 10824 .cmd = NL80211_CMD_GET_WOWLAN, 10825 .doit = nl80211_get_wowlan, 10826 .policy = nl80211_policy, 10827 /* can be retrieved by unprivileged users */ 10828 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10829 NL80211_FLAG_NEED_RTNL, 10830 }, 10831 { 10832 .cmd = NL80211_CMD_SET_WOWLAN, 10833 .doit = nl80211_set_wowlan, 10834 .policy = nl80211_policy, 10835 .flags = GENL_ADMIN_PERM, 10836 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10837 NL80211_FLAG_NEED_RTNL, 10838 }, 10839#endif 10840 { 10841 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 10842 .doit = nl80211_set_rekey_data, 10843 .policy = nl80211_policy, 10844 .flags = GENL_ADMIN_PERM, 10845 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10846 NL80211_FLAG_NEED_RTNL | 10847 NL80211_FLAG_CLEAR_SKB, 10848 }, 10849 { 10850 .cmd = NL80211_CMD_TDLS_MGMT, 10851 .doit = nl80211_tdls_mgmt, 10852 .policy = nl80211_policy, 10853 .flags = GENL_ADMIN_PERM, 10854 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10855 NL80211_FLAG_NEED_RTNL, 10856 }, 10857 { 10858 .cmd = NL80211_CMD_TDLS_OPER, 10859 .doit = nl80211_tdls_oper, 10860 .policy = nl80211_policy, 10861 .flags = GENL_ADMIN_PERM, 10862 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10863 NL80211_FLAG_NEED_RTNL, 10864 }, 10865 { 10866 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 10867 .doit = nl80211_register_unexpected_frame, 10868 .policy = nl80211_policy, 10869 .flags = GENL_ADMIN_PERM, 10870 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10871 NL80211_FLAG_NEED_RTNL, 10872 }, 10873 { 10874 .cmd = NL80211_CMD_PROBE_CLIENT, 10875 .doit = nl80211_probe_client, 10876 .policy = nl80211_policy, 10877 .flags = GENL_ADMIN_PERM, 10878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10879 NL80211_FLAG_NEED_RTNL, 10880 }, 10881 { 10882 .cmd = NL80211_CMD_REGISTER_BEACONS, 10883 .doit = nl80211_register_beacons, 10884 .policy = nl80211_policy, 10885 .flags = GENL_ADMIN_PERM, 10886 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10887 NL80211_FLAG_NEED_RTNL, 10888 }, 10889 { 10890 .cmd = NL80211_CMD_SET_NOACK_MAP, 10891 .doit = nl80211_set_noack_map, 10892 .policy = nl80211_policy, 10893 .flags = GENL_ADMIN_PERM, 10894 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10895 NL80211_FLAG_NEED_RTNL, 10896 }, 10897 { 10898 .cmd = NL80211_CMD_START_P2P_DEVICE, 10899 .doit = nl80211_start_p2p_device, 10900 .policy = nl80211_policy, 10901 .flags = GENL_ADMIN_PERM, 10902 .internal_flags = NL80211_FLAG_NEED_WDEV | 10903 NL80211_FLAG_NEED_RTNL, 10904 }, 10905 { 10906 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 10907 .doit = nl80211_stop_p2p_device, 10908 .policy = nl80211_policy, 10909 .flags = GENL_ADMIN_PERM, 10910 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10911 NL80211_FLAG_NEED_RTNL, 10912 }, 10913 { 10914 .cmd = NL80211_CMD_SET_MCAST_RATE, 10915 .doit = nl80211_set_mcast_rate, 10916 .policy = nl80211_policy, 10917 .flags = GENL_ADMIN_PERM, 10918 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10919 NL80211_FLAG_NEED_RTNL, 10920 }, 10921 { 10922 .cmd = NL80211_CMD_SET_MAC_ACL, 10923 .doit = nl80211_set_mac_acl, 10924 .policy = nl80211_policy, 10925 .flags = GENL_ADMIN_PERM, 10926 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10927 NL80211_FLAG_NEED_RTNL, 10928 }, 10929 { 10930 .cmd = NL80211_CMD_RADAR_DETECT, 10931 .doit = nl80211_start_radar_detection, 10932 .policy = nl80211_policy, 10933 .flags = GENL_ADMIN_PERM, 10934 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10935 NL80211_FLAG_NEED_RTNL, 10936 }, 10937 { 10938 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 10939 .doit = nl80211_get_protocol_features, 10940 .policy = nl80211_policy, 10941 }, 10942 { 10943 .cmd = NL80211_CMD_UPDATE_FT_IES, 10944 .doit = nl80211_update_ft_ies, 10945 .policy = nl80211_policy, 10946 .flags = GENL_ADMIN_PERM, 10947 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10948 NL80211_FLAG_NEED_RTNL, 10949 }, 10950 { 10951 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 10952 .doit = nl80211_crit_protocol_start, 10953 .policy = nl80211_policy, 10954 .flags = GENL_ADMIN_PERM, 10955 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10956 NL80211_FLAG_NEED_RTNL, 10957 }, 10958 { 10959 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 10960 .doit = nl80211_crit_protocol_stop, 10961 .policy = nl80211_policy, 10962 .flags = GENL_ADMIN_PERM, 10963 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10964 NL80211_FLAG_NEED_RTNL, 10965 }, 10966 { 10967 .cmd = NL80211_CMD_GET_COALESCE, 10968 .doit = nl80211_get_coalesce, 10969 .policy = nl80211_policy, 10970 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10971 NL80211_FLAG_NEED_RTNL, 10972 }, 10973 { 10974 .cmd = NL80211_CMD_SET_COALESCE, 10975 .doit = nl80211_set_coalesce, 10976 .policy = nl80211_policy, 10977 .flags = GENL_ADMIN_PERM, 10978 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10979 NL80211_FLAG_NEED_RTNL, 10980 }, 10981 { 10982 .cmd = NL80211_CMD_CHANNEL_SWITCH, 10983 .doit = nl80211_channel_switch, 10984 .policy = nl80211_policy, 10985 .flags = GENL_ADMIN_PERM, 10986 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10987 NL80211_FLAG_NEED_RTNL, 10988 }, 10989 { 10990 .cmd = NL80211_CMD_VENDOR, 10991 .doit = nl80211_vendor_cmd, 10992 .policy = nl80211_policy, 10993 .flags = GENL_ADMIN_PERM, 10994 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10995 NL80211_FLAG_NEED_RTNL, 10996 }, 10997 { 10998 .cmd = NL80211_CMD_SET_QOS_MAP, 10999 .doit = nl80211_set_qos_map, 11000 .policy = nl80211_policy, 11001 .flags = GENL_ADMIN_PERM, 11002 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11003 NL80211_FLAG_NEED_RTNL, 11004 }, 11005 { 11006 .cmd = NL80211_CMD_ADD_TX_TS, 11007 .doit = nl80211_add_tx_ts, 11008 .policy = nl80211_policy, 11009 .flags = GENL_ADMIN_PERM, 11010 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11011 NL80211_FLAG_NEED_RTNL, 11012 }, 11013 { 11014 .cmd = NL80211_CMD_DEL_TX_TS, 11015 .doit = nl80211_del_tx_ts, 11016 .policy = nl80211_policy, 11017 .flags = GENL_ADMIN_PERM, 11018 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11019 NL80211_FLAG_NEED_RTNL, 11020 }, 11021 { 11022 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 11023 .doit = nl80211_tdls_channel_switch, 11024 .policy = nl80211_policy, 11025 .flags = GENL_ADMIN_PERM, 11026 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11027 NL80211_FLAG_NEED_RTNL, 11028 }, 11029 { 11030 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 11031 .doit = nl80211_tdls_cancel_channel_switch, 11032 .policy = nl80211_policy, 11033 .flags = GENL_ADMIN_PERM, 11034 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11035 NL80211_FLAG_NEED_RTNL, 11036 }, 11037}; 11038 11039/* notification functions */ 11040 11041void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 11042 enum nl80211_commands cmd) 11043{ 11044 struct sk_buff *msg; 11045 struct nl80211_dump_wiphy_state state = {}; 11046 11047 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 11048 cmd != NL80211_CMD_DEL_WIPHY); 11049 11050 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11051 if (!msg) 11052 return; 11053 11054 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 11055 nlmsg_free(msg); 11056 return; 11057 } 11058 11059 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11060 NL80211_MCGRP_CONFIG, GFP_KERNEL); 11061} 11062 11063static int nl80211_add_scan_req(struct sk_buff *msg, 11064 struct cfg80211_registered_device *rdev) 11065{ 11066 struct cfg80211_scan_request *req = rdev->scan_req; 11067 struct nlattr *nest; 11068 int i; 11069 11070 if (WARN_ON(!req)) 11071 return 0; 11072 11073 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 11074 if (!nest) 11075 goto nla_put_failure; 11076 for (i = 0; i < req->n_ssids; i++) { 11077 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 11078 goto nla_put_failure; 11079 } 11080 nla_nest_end(msg, nest); 11081 11082 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11083 if (!nest) 11084 goto nla_put_failure; 11085 for (i = 0; i < req->n_channels; i++) { 11086 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11087 goto nla_put_failure; 11088 } 11089 nla_nest_end(msg, nest); 11090 11091 if (req->ie && 11092 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 11093 goto nla_put_failure; 11094 11095 if (req->flags && 11096 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 11097 goto nla_put_failure; 11098 11099 return 0; 11100 nla_put_failure: 11101 return -ENOBUFS; 11102} 11103 11104static int nl80211_send_scan_msg(struct sk_buff *msg, 11105 struct cfg80211_registered_device *rdev, 11106 struct wireless_dev *wdev, 11107 u32 portid, u32 seq, int flags, 11108 u32 cmd) 11109{ 11110 void *hdr; 11111 11112 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11113 if (!hdr) 11114 return -1; 11115 11116 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11117 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11118 wdev->netdev->ifindex)) || 11119 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11120 goto nla_put_failure; 11121 11122 /* ignore errors and send incomplete event anyway */ 11123 nl80211_add_scan_req(msg, rdev); 11124 11125 genlmsg_end(msg, hdr); 11126 return 0; 11127 11128 nla_put_failure: 11129 genlmsg_cancel(msg, hdr); 11130 return -EMSGSIZE; 11131} 11132 11133static int 11134nl80211_send_sched_scan_msg(struct sk_buff *msg, 11135 struct cfg80211_registered_device *rdev, 11136 struct net_device *netdev, 11137 u32 portid, u32 seq, int flags, u32 cmd) 11138{ 11139 void *hdr; 11140 11141 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11142 if (!hdr) 11143 return -1; 11144 11145 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11146 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11147 goto nla_put_failure; 11148 11149 genlmsg_end(msg, hdr); 11150 return 0; 11151 11152 nla_put_failure: 11153 genlmsg_cancel(msg, hdr); 11154 return -EMSGSIZE; 11155} 11156 11157void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 11158 struct wireless_dev *wdev) 11159{ 11160 struct sk_buff *msg; 11161 11162 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11163 if (!msg) 11164 return; 11165 11166 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11167 NL80211_CMD_TRIGGER_SCAN) < 0) { 11168 nlmsg_free(msg); 11169 return; 11170 } 11171 11172 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11173 NL80211_MCGRP_SCAN, GFP_KERNEL); 11174} 11175 11176struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 11177 struct wireless_dev *wdev, bool aborted) 11178{ 11179 struct sk_buff *msg; 11180 11181 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11182 if (!msg) 11183 return NULL; 11184 11185 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11186 aborted ? NL80211_CMD_SCAN_ABORTED : 11187 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 11188 nlmsg_free(msg); 11189 return NULL; 11190 } 11191 11192 return msg; 11193} 11194 11195void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 11196 struct sk_buff *msg) 11197{ 11198 if (!msg) 11199 return; 11200 11201 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11202 NL80211_MCGRP_SCAN, GFP_KERNEL); 11203} 11204 11205void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 11206 struct net_device *netdev) 11207{ 11208 struct sk_buff *msg; 11209 11210 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11211 if (!msg) 11212 return; 11213 11214 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 11215 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 11216 nlmsg_free(msg); 11217 return; 11218 } 11219 11220 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11221 NL80211_MCGRP_SCAN, GFP_KERNEL); 11222} 11223 11224void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 11225 struct net_device *netdev, u32 cmd) 11226{ 11227 struct sk_buff *msg; 11228 11229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11230 if (!msg) 11231 return; 11232 11233 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 11234 nlmsg_free(msg); 11235 return; 11236 } 11237 11238 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11239 NL80211_MCGRP_SCAN, GFP_KERNEL); 11240} 11241 11242static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 11243 struct regulatory_request *request) 11244{ 11245 /* Userspace can always count this one always being set */ 11246 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 11247 goto nla_put_failure; 11248 11249 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 11250 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11251 NL80211_REGDOM_TYPE_WORLD)) 11252 goto nla_put_failure; 11253 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 11254 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11255 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 11256 goto nla_put_failure; 11257 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 11258 request->intersect) { 11259 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11260 NL80211_REGDOM_TYPE_INTERSECTION)) 11261 goto nla_put_failure; 11262 } else { 11263 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11264 NL80211_REGDOM_TYPE_COUNTRY) || 11265 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 11266 request->alpha2)) 11267 goto nla_put_failure; 11268 } 11269 11270 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 11271 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 11272 11273 if (wiphy && 11274 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 11275 goto nla_put_failure; 11276 11277 if (wiphy && 11278 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 11279 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 11280 goto nla_put_failure; 11281 } 11282 11283 return true; 11284 11285nla_put_failure: 11286 return false; 11287} 11288 11289/* 11290 * This can happen on global regulatory changes or device specific settings 11291 * based on custom regulatory domains. 11292 */ 11293void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 11294 struct regulatory_request *request) 11295{ 11296 struct sk_buff *msg; 11297 void *hdr; 11298 11299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11300 if (!msg) 11301 return; 11302 11303 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 11304 if (!hdr) { 11305 nlmsg_free(msg); 11306 return; 11307 } 11308 11309 if (nl80211_reg_change_event_fill(msg, request) == false) 11310 goto nla_put_failure; 11311 11312 genlmsg_end(msg, hdr); 11313 11314 rcu_read_lock(); 11315 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11316 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11317 rcu_read_unlock(); 11318 11319 return; 11320 11321nla_put_failure: 11322 genlmsg_cancel(msg, hdr); 11323 nlmsg_free(msg); 11324} 11325 11326static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 11327 struct net_device *netdev, 11328 const u8 *buf, size_t len, 11329 enum nl80211_commands cmd, gfp_t gfp, 11330 int uapsd_queues) 11331{ 11332 struct sk_buff *msg; 11333 void *hdr; 11334 11335 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11336 if (!msg) 11337 return; 11338 11339 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11340 if (!hdr) { 11341 nlmsg_free(msg); 11342 return; 11343 } 11344 11345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11346 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11347 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 11348 goto nla_put_failure; 11349 11350 if (uapsd_queues >= 0) { 11351 struct nlattr *nla_wmm = 11352 nla_nest_start(msg, NL80211_ATTR_STA_WME); 11353 if (!nla_wmm) 11354 goto nla_put_failure; 11355 11356 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 11357 uapsd_queues)) 11358 goto nla_put_failure; 11359 11360 nla_nest_end(msg, nla_wmm); 11361 } 11362 11363 genlmsg_end(msg, hdr); 11364 11365 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11366 NL80211_MCGRP_MLME, gfp); 11367 return; 11368 11369 nla_put_failure: 11370 genlmsg_cancel(msg, hdr); 11371 nlmsg_free(msg); 11372} 11373 11374void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 11375 struct net_device *netdev, const u8 *buf, 11376 size_t len, gfp_t gfp) 11377{ 11378 nl80211_send_mlme_event(rdev, netdev, buf, len, 11379 NL80211_CMD_AUTHENTICATE, gfp, -1); 11380} 11381 11382void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 11383 struct net_device *netdev, const u8 *buf, 11384 size_t len, gfp_t gfp, int uapsd_queues) 11385{ 11386 nl80211_send_mlme_event(rdev, netdev, buf, len, 11387 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 11388} 11389 11390void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 11391 struct net_device *netdev, const u8 *buf, 11392 size_t len, gfp_t gfp) 11393{ 11394 nl80211_send_mlme_event(rdev, netdev, buf, len, 11395 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 11396} 11397 11398void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 11399 struct net_device *netdev, const u8 *buf, 11400 size_t len, gfp_t gfp) 11401{ 11402 nl80211_send_mlme_event(rdev, netdev, buf, len, 11403 NL80211_CMD_DISASSOCIATE, gfp, -1); 11404} 11405 11406void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 11407 size_t len) 11408{ 11409 struct wireless_dev *wdev = dev->ieee80211_ptr; 11410 struct wiphy *wiphy = wdev->wiphy; 11411 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11412 const struct ieee80211_mgmt *mgmt = (void *)buf; 11413 u32 cmd; 11414 11415 if (WARN_ON(len < 2)) 11416 return; 11417 11418 if (ieee80211_is_deauth(mgmt->frame_control)) 11419 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 11420 else 11421 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 11422 11423 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 11424 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 11425} 11426EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 11427 11428static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 11429 struct net_device *netdev, int cmd, 11430 const u8 *addr, gfp_t gfp) 11431{ 11432 struct sk_buff *msg; 11433 void *hdr; 11434 11435 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11436 if (!msg) 11437 return; 11438 11439 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11440 if (!hdr) { 11441 nlmsg_free(msg); 11442 return; 11443 } 11444 11445 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11446 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11447 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 11448 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11449 goto nla_put_failure; 11450 11451 genlmsg_end(msg, hdr); 11452 11453 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11454 NL80211_MCGRP_MLME, gfp); 11455 return; 11456 11457 nla_put_failure: 11458 genlmsg_cancel(msg, hdr); 11459 nlmsg_free(msg); 11460} 11461 11462void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 11463 struct net_device *netdev, const u8 *addr, 11464 gfp_t gfp) 11465{ 11466 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 11467 addr, gfp); 11468} 11469 11470void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 11471 struct net_device *netdev, const u8 *addr, 11472 gfp_t gfp) 11473{ 11474 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 11475 addr, gfp); 11476} 11477 11478void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 11479 struct net_device *netdev, const u8 *bssid, 11480 const u8 *req_ie, size_t req_ie_len, 11481 const u8 *resp_ie, size_t resp_ie_len, 11482 u16 status, gfp_t gfp) 11483{ 11484 struct sk_buff *msg; 11485 void *hdr; 11486 11487 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11488 if (!msg) 11489 return; 11490 11491 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 11492 if (!hdr) { 11493 nlmsg_free(msg); 11494 return; 11495 } 11496 11497 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11498 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11499 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 11500 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 11501 (req_ie && 11502 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11503 (resp_ie && 11504 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11505 goto nla_put_failure; 11506 11507 genlmsg_end(msg, hdr); 11508 11509 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11510 NL80211_MCGRP_MLME, gfp); 11511 return; 11512 11513 nla_put_failure: 11514 genlmsg_cancel(msg, hdr); 11515 nlmsg_free(msg); 11516 11517} 11518 11519void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 11520 struct net_device *netdev, const u8 *bssid, 11521 const u8 *req_ie, size_t req_ie_len, 11522 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 11523{ 11524 struct sk_buff *msg; 11525 void *hdr; 11526 11527 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11528 if (!msg) 11529 return; 11530 11531 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 11532 if (!hdr) { 11533 nlmsg_free(msg); 11534 return; 11535 } 11536 11537 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11538 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11539 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 11540 (req_ie && 11541 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11542 (resp_ie && 11543 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11544 goto nla_put_failure; 11545 11546 genlmsg_end(msg, hdr); 11547 11548 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11549 NL80211_MCGRP_MLME, gfp); 11550 return; 11551 11552 nla_put_failure: 11553 genlmsg_cancel(msg, hdr); 11554 nlmsg_free(msg); 11555 11556} 11557 11558void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 11559 struct net_device *netdev, u16 reason, 11560 const u8 *ie, size_t ie_len, bool from_ap) 11561{ 11562 struct sk_buff *msg; 11563 void *hdr; 11564 11565 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11566 if (!msg) 11567 return; 11568 11569 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 11570 if (!hdr) { 11571 nlmsg_free(msg); 11572 return; 11573 } 11574 11575 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11576 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11577 (from_ap && reason && 11578 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 11579 (from_ap && 11580 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 11581 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 11582 goto nla_put_failure; 11583 11584 genlmsg_end(msg, hdr); 11585 11586 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11587 NL80211_MCGRP_MLME, GFP_KERNEL); 11588 return; 11589 11590 nla_put_failure: 11591 genlmsg_cancel(msg, hdr); 11592 nlmsg_free(msg); 11593 11594} 11595 11596void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 11597 struct net_device *netdev, const u8 *bssid, 11598 gfp_t gfp) 11599{ 11600 struct sk_buff *msg; 11601 void *hdr; 11602 11603 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11604 if (!msg) 11605 return; 11606 11607 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 11608 if (!hdr) { 11609 nlmsg_free(msg); 11610 return; 11611 } 11612 11613 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11614 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11615 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 11616 goto nla_put_failure; 11617 11618 genlmsg_end(msg, hdr); 11619 11620 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11621 NL80211_MCGRP_MLME, gfp); 11622 return; 11623 11624 nla_put_failure: 11625 genlmsg_cancel(msg, hdr); 11626 nlmsg_free(msg); 11627} 11628 11629void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 11630 const u8* ie, u8 ie_len, gfp_t gfp) 11631{ 11632 struct wireless_dev *wdev = dev->ieee80211_ptr; 11633 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11634 struct sk_buff *msg; 11635 void *hdr; 11636 11637 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 11638 return; 11639 11640 trace_cfg80211_notify_new_peer_candidate(dev, addr); 11641 11642 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11643 if (!msg) 11644 return; 11645 11646 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 11647 if (!hdr) { 11648 nlmsg_free(msg); 11649 return; 11650 } 11651 11652 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11653 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11654 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 11655 (ie_len && ie && 11656 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 11657 goto nla_put_failure; 11658 11659 genlmsg_end(msg, hdr); 11660 11661 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11662 NL80211_MCGRP_MLME, gfp); 11663 return; 11664 11665 nla_put_failure: 11666 genlmsg_cancel(msg, hdr); 11667 nlmsg_free(msg); 11668} 11669EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 11670 11671void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 11672 struct net_device *netdev, const u8 *addr, 11673 enum nl80211_key_type key_type, int key_id, 11674 const u8 *tsc, gfp_t gfp) 11675{ 11676 struct sk_buff *msg; 11677 void *hdr; 11678 11679 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11680 if (!msg) 11681 return; 11682 11683 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 11684 if (!hdr) { 11685 nlmsg_free(msg); 11686 return; 11687 } 11688 11689 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11690 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11691 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 11692 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 11693 (key_id != -1 && 11694 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 11695 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 11696 goto nla_put_failure; 11697 11698 genlmsg_end(msg, hdr); 11699 11700 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11701 NL80211_MCGRP_MLME, gfp); 11702 return; 11703 11704 nla_put_failure: 11705 genlmsg_cancel(msg, hdr); 11706 nlmsg_free(msg); 11707} 11708 11709void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 11710 struct ieee80211_channel *channel_before, 11711 struct ieee80211_channel *channel_after) 11712{ 11713 struct sk_buff *msg; 11714 void *hdr; 11715 struct nlattr *nl_freq; 11716 11717 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 11718 if (!msg) 11719 return; 11720 11721 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 11722 if (!hdr) { 11723 nlmsg_free(msg); 11724 return; 11725 } 11726 11727 /* 11728 * Since we are applying the beacon hint to a wiphy we know its 11729 * wiphy_idx is valid 11730 */ 11731 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 11732 goto nla_put_failure; 11733 11734 /* Before */ 11735 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 11736 if (!nl_freq) 11737 goto nla_put_failure; 11738 if (nl80211_msg_put_channel(msg, channel_before, false)) 11739 goto nla_put_failure; 11740 nla_nest_end(msg, nl_freq); 11741 11742 /* After */ 11743 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 11744 if (!nl_freq) 11745 goto nla_put_failure; 11746 if (nl80211_msg_put_channel(msg, channel_after, false)) 11747 goto nla_put_failure; 11748 nla_nest_end(msg, nl_freq); 11749 11750 genlmsg_end(msg, hdr); 11751 11752 rcu_read_lock(); 11753 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11754 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11755 rcu_read_unlock(); 11756 11757 return; 11758 11759nla_put_failure: 11760 genlmsg_cancel(msg, hdr); 11761 nlmsg_free(msg); 11762} 11763 11764static void nl80211_send_remain_on_chan_event( 11765 int cmd, struct cfg80211_registered_device *rdev, 11766 struct wireless_dev *wdev, u64 cookie, 11767 struct ieee80211_channel *chan, 11768 unsigned int duration, gfp_t gfp) 11769{ 11770 struct sk_buff *msg; 11771 void *hdr; 11772 11773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11774 if (!msg) 11775 return; 11776 11777 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11778 if (!hdr) { 11779 nlmsg_free(msg); 11780 return; 11781 } 11782 11783 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11784 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11785 wdev->netdev->ifindex)) || 11786 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11787 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 11788 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 11789 NL80211_CHAN_NO_HT) || 11790 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 11791 goto nla_put_failure; 11792 11793 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 11794 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 11795 goto nla_put_failure; 11796 11797 genlmsg_end(msg, hdr); 11798 11799 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11800 NL80211_MCGRP_MLME, gfp); 11801 return; 11802 11803 nla_put_failure: 11804 genlmsg_cancel(msg, hdr); 11805 nlmsg_free(msg); 11806} 11807 11808void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 11809 struct ieee80211_channel *chan, 11810 unsigned int duration, gfp_t gfp) 11811{ 11812 struct wiphy *wiphy = wdev->wiphy; 11813 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11814 11815 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 11816 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 11817 rdev, wdev, cookie, chan, 11818 duration, gfp); 11819} 11820EXPORT_SYMBOL(cfg80211_ready_on_channel); 11821 11822void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 11823 struct ieee80211_channel *chan, 11824 gfp_t gfp) 11825{ 11826 struct wiphy *wiphy = wdev->wiphy; 11827 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11828 11829 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 11830 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11831 rdev, wdev, cookie, chan, 0, gfp); 11832} 11833EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 11834 11835void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 11836 struct station_info *sinfo, gfp_t gfp) 11837{ 11838 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11839 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11840 struct sk_buff *msg; 11841 11842 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 11843 11844 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11845 if (!msg) 11846 return; 11847 11848 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 11849 rdev, dev, mac_addr, sinfo) < 0) { 11850 nlmsg_free(msg); 11851 return; 11852 } 11853 11854 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11855 NL80211_MCGRP_MLME, gfp); 11856} 11857EXPORT_SYMBOL(cfg80211_new_sta); 11858 11859void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 11860 struct station_info *sinfo, gfp_t gfp) 11861{ 11862 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11863 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11864 struct sk_buff *msg; 11865 struct station_info empty_sinfo = {}; 11866 11867 if (!sinfo) 11868 sinfo = &empty_sinfo; 11869 11870 trace_cfg80211_del_sta(dev, mac_addr); 11871 11872 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11873 if (!msg) 11874 return; 11875 11876 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 11877 rdev, dev, mac_addr, sinfo) < 0) { 11878 nlmsg_free(msg); 11879 return; 11880 } 11881 11882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11883 NL80211_MCGRP_MLME, gfp); 11884} 11885EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 11886 11887void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 11888 enum nl80211_connect_failed_reason reason, 11889 gfp_t gfp) 11890{ 11891 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11892 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11893 struct sk_buff *msg; 11894 void *hdr; 11895 11896 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 11897 if (!msg) 11898 return; 11899 11900 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 11901 if (!hdr) { 11902 nlmsg_free(msg); 11903 return; 11904 } 11905 11906 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11907 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 11908 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 11909 goto nla_put_failure; 11910 11911 genlmsg_end(msg, hdr); 11912 11913 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11914 NL80211_MCGRP_MLME, gfp); 11915 return; 11916 11917 nla_put_failure: 11918 genlmsg_cancel(msg, hdr); 11919 nlmsg_free(msg); 11920} 11921EXPORT_SYMBOL(cfg80211_conn_failed); 11922 11923static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 11924 const u8 *addr, gfp_t gfp) 11925{ 11926 struct wireless_dev *wdev = dev->ieee80211_ptr; 11927 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11928 struct sk_buff *msg; 11929 void *hdr; 11930 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 11931 11932 if (!nlportid) 11933 return false; 11934 11935 msg = nlmsg_new(100, gfp); 11936 if (!msg) 11937 return true; 11938 11939 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11940 if (!hdr) { 11941 nlmsg_free(msg); 11942 return true; 11943 } 11944 11945 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11946 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11947 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11948 goto nla_put_failure; 11949 11950 genlmsg_end(msg, hdr); 11951 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11952 return true; 11953 11954 nla_put_failure: 11955 genlmsg_cancel(msg, hdr); 11956 nlmsg_free(msg); 11957 return true; 11958} 11959 11960bool cfg80211_rx_spurious_frame(struct net_device *dev, 11961 const u8 *addr, gfp_t gfp) 11962{ 11963 struct wireless_dev *wdev = dev->ieee80211_ptr; 11964 bool ret; 11965 11966 trace_cfg80211_rx_spurious_frame(dev, addr); 11967 11968 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11969 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 11970 trace_cfg80211_return_bool(false); 11971 return false; 11972 } 11973 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 11974 addr, gfp); 11975 trace_cfg80211_return_bool(ret); 11976 return ret; 11977} 11978EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 11979 11980bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 11981 const u8 *addr, gfp_t gfp) 11982{ 11983 struct wireless_dev *wdev = dev->ieee80211_ptr; 11984 bool ret; 11985 11986 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 11987 11988 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11989 wdev->iftype != NL80211_IFTYPE_P2P_GO && 11990 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 11991 trace_cfg80211_return_bool(false); 11992 return false; 11993 } 11994 ret = __nl80211_unexpected_frame(dev, 11995 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 11996 addr, gfp); 11997 trace_cfg80211_return_bool(ret); 11998 return ret; 11999} 12000EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 12001 12002int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 12003 struct wireless_dev *wdev, u32 nlportid, 12004 int freq, int sig_dbm, 12005 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 12006{ 12007 struct net_device *netdev = wdev->netdev; 12008 struct sk_buff *msg; 12009 void *hdr; 12010 12011 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12012 if (!msg) 12013 return -ENOMEM; 12014 12015 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12016 if (!hdr) { 12017 nlmsg_free(msg); 12018 return -ENOMEM; 12019 } 12020 12021 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12022 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12023 netdev->ifindex)) || 12024 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12025 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 12026 (sig_dbm && 12027 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12028 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12029 (flags && 12030 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 12031 goto nla_put_failure; 12032 12033 genlmsg_end(msg, hdr); 12034 12035 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12036 12037 nla_put_failure: 12038 genlmsg_cancel(msg, hdr); 12039 nlmsg_free(msg); 12040 return -ENOBUFS; 12041} 12042 12043void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 12044 const u8 *buf, size_t len, bool ack, gfp_t gfp) 12045{ 12046 struct wiphy *wiphy = wdev->wiphy; 12047 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12048 struct net_device *netdev = wdev->netdev; 12049 struct sk_buff *msg; 12050 void *hdr; 12051 12052 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 12053 12054 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12055 if (!msg) 12056 return; 12057 12058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 12059 if (!hdr) { 12060 nlmsg_free(msg); 12061 return; 12062 } 12063 12064 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12065 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12066 netdev->ifindex)) || 12067 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12068 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12069 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12070 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 12071 goto nla_put_failure; 12072 12073 genlmsg_end(msg, hdr); 12074 12075 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12076 NL80211_MCGRP_MLME, gfp); 12077 return; 12078 12079 nla_put_failure: 12080 genlmsg_cancel(msg, hdr); 12081 nlmsg_free(msg); 12082} 12083EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 12084 12085static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 12086 const char *mac, gfp_t gfp) 12087{ 12088 struct wireless_dev *wdev = dev->ieee80211_ptr; 12089 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12090 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12091 void **cb; 12092 12093 if (!msg) 12094 return NULL; 12095 12096 cb = (void **)msg->cb; 12097 12098 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 12099 if (!cb[0]) { 12100 nlmsg_free(msg); 12101 return NULL; 12102 } 12103 12104 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12105 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12106 goto nla_put_failure; 12107 12108 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 12109 goto nla_put_failure; 12110 12111 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 12112 if (!cb[1]) 12113 goto nla_put_failure; 12114 12115 cb[2] = rdev; 12116 12117 return msg; 12118 nla_put_failure: 12119 nlmsg_free(msg); 12120 return NULL; 12121} 12122 12123static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 12124{ 12125 void **cb = (void **)msg->cb; 12126 struct cfg80211_registered_device *rdev = cb[2]; 12127 12128 nla_nest_end(msg, cb[1]); 12129 genlmsg_end(msg, cb[0]); 12130 12131 memset(msg->cb, 0, sizeof(msg->cb)); 12132 12133 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12134 NL80211_MCGRP_MLME, gfp); 12135} 12136 12137void cfg80211_cqm_rssi_notify(struct net_device *dev, 12138 enum nl80211_cqm_rssi_threshold_event rssi_event, 12139 gfp_t gfp) 12140{ 12141 struct sk_buff *msg; 12142 12143 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 12144 12145 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 12146 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 12147 return; 12148 12149 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12150 if (!msg) 12151 return; 12152 12153 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 12154 rssi_event)) 12155 goto nla_put_failure; 12156 12157 cfg80211_send_cqm(msg, gfp); 12158 12159 return; 12160 12161 nla_put_failure: 12162 nlmsg_free(msg); 12163} 12164EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 12165 12166void cfg80211_cqm_txe_notify(struct net_device *dev, 12167 const u8 *peer, u32 num_packets, 12168 u32 rate, u32 intvl, gfp_t gfp) 12169{ 12170 struct sk_buff *msg; 12171 12172 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12173 if (!msg) 12174 return; 12175 12176 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 12177 goto nla_put_failure; 12178 12179 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 12180 goto nla_put_failure; 12181 12182 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 12183 goto nla_put_failure; 12184 12185 cfg80211_send_cqm(msg, gfp); 12186 return; 12187 12188 nla_put_failure: 12189 nlmsg_free(msg); 12190} 12191EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 12192 12193void cfg80211_cqm_pktloss_notify(struct net_device *dev, 12194 const u8 *peer, u32 num_packets, gfp_t gfp) 12195{ 12196 struct sk_buff *msg; 12197 12198 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 12199 12200 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12201 if (!msg) 12202 return; 12203 12204 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 12205 goto nla_put_failure; 12206 12207 cfg80211_send_cqm(msg, gfp); 12208 return; 12209 12210 nla_put_failure: 12211 nlmsg_free(msg); 12212} 12213EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 12214 12215void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 12216{ 12217 struct sk_buff *msg; 12218 12219 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12220 if (!msg) 12221 return; 12222 12223 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 12224 goto nla_put_failure; 12225 12226 cfg80211_send_cqm(msg, gfp); 12227 return; 12228 12229 nla_put_failure: 12230 nlmsg_free(msg); 12231} 12232EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 12233 12234static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 12235 struct net_device *netdev, const u8 *bssid, 12236 const u8 *replay_ctr, gfp_t gfp) 12237{ 12238 struct sk_buff *msg; 12239 struct nlattr *rekey_attr; 12240 void *hdr; 12241 12242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12243 if (!msg) 12244 return; 12245 12246 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 12247 if (!hdr) { 12248 nlmsg_free(msg); 12249 return; 12250 } 12251 12252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12253 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12254 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12255 goto nla_put_failure; 12256 12257 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 12258 if (!rekey_attr) 12259 goto nla_put_failure; 12260 12261 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 12262 NL80211_REPLAY_CTR_LEN, replay_ctr)) 12263 goto nla_put_failure; 12264 12265 nla_nest_end(msg, rekey_attr); 12266 12267 genlmsg_end(msg, hdr); 12268 12269 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12270 NL80211_MCGRP_MLME, gfp); 12271 return; 12272 12273 nla_put_failure: 12274 genlmsg_cancel(msg, hdr); 12275 nlmsg_free(msg); 12276} 12277 12278void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 12279 const u8 *replay_ctr, gfp_t gfp) 12280{ 12281 struct wireless_dev *wdev = dev->ieee80211_ptr; 12282 struct wiphy *wiphy = wdev->wiphy; 12283 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12284 12285 trace_cfg80211_gtk_rekey_notify(dev, bssid); 12286 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 12287} 12288EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 12289 12290static void 12291nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 12292 struct net_device *netdev, int index, 12293 const u8 *bssid, bool preauth, gfp_t gfp) 12294{ 12295 struct sk_buff *msg; 12296 struct nlattr *attr; 12297 void *hdr; 12298 12299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12300 if (!msg) 12301 return; 12302 12303 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 12304 if (!hdr) { 12305 nlmsg_free(msg); 12306 return; 12307 } 12308 12309 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12310 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12311 goto nla_put_failure; 12312 12313 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 12314 if (!attr) 12315 goto nla_put_failure; 12316 12317 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 12318 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 12319 (preauth && 12320 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 12321 goto nla_put_failure; 12322 12323 nla_nest_end(msg, attr); 12324 12325 genlmsg_end(msg, hdr); 12326 12327 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12328 NL80211_MCGRP_MLME, gfp); 12329 return; 12330 12331 nla_put_failure: 12332 genlmsg_cancel(msg, hdr); 12333 nlmsg_free(msg); 12334} 12335 12336void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 12337 const u8 *bssid, bool preauth, gfp_t gfp) 12338{ 12339 struct wireless_dev *wdev = dev->ieee80211_ptr; 12340 struct wiphy *wiphy = wdev->wiphy; 12341 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12342 12343 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 12344 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 12345} 12346EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 12347 12348static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 12349 struct net_device *netdev, 12350 struct cfg80211_chan_def *chandef, 12351 gfp_t gfp, 12352 enum nl80211_commands notif, 12353 u8 count) 12354{ 12355 struct sk_buff *msg; 12356 void *hdr; 12357 12358 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12359 if (!msg) 12360 return; 12361 12362 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 12363 if (!hdr) { 12364 nlmsg_free(msg); 12365 return; 12366 } 12367 12368 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12369 goto nla_put_failure; 12370 12371 if (nl80211_send_chandef(msg, chandef)) 12372 goto nla_put_failure; 12373 12374 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 12375 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 12376 goto nla_put_failure; 12377 12378 genlmsg_end(msg, hdr); 12379 12380 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12381 NL80211_MCGRP_MLME, gfp); 12382 return; 12383 12384 nla_put_failure: 12385 genlmsg_cancel(msg, hdr); 12386 nlmsg_free(msg); 12387} 12388 12389void cfg80211_ch_switch_notify(struct net_device *dev, 12390 struct cfg80211_chan_def *chandef) 12391{ 12392 struct wireless_dev *wdev = dev->ieee80211_ptr; 12393 struct wiphy *wiphy = wdev->wiphy; 12394 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12395 12396 ASSERT_WDEV_LOCK(wdev); 12397 12398 trace_cfg80211_ch_switch_notify(dev, chandef); 12399 12400 wdev->chandef = *chandef; 12401 wdev->preset_chandef = *chandef; 12402 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12403 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 12404} 12405EXPORT_SYMBOL(cfg80211_ch_switch_notify); 12406 12407void cfg80211_ch_switch_started_notify(struct net_device *dev, 12408 struct cfg80211_chan_def *chandef, 12409 u8 count) 12410{ 12411 struct wireless_dev *wdev = dev->ieee80211_ptr; 12412 struct wiphy *wiphy = wdev->wiphy; 12413 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12414 12415 trace_cfg80211_ch_switch_started_notify(dev, chandef); 12416 12417 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12418 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 12419} 12420EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 12421 12422void 12423nl80211_radar_notify(struct cfg80211_registered_device *rdev, 12424 const struct cfg80211_chan_def *chandef, 12425 enum nl80211_radar_event event, 12426 struct net_device *netdev, gfp_t gfp) 12427{ 12428 struct sk_buff *msg; 12429 void *hdr; 12430 12431 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12432 if (!msg) 12433 return; 12434 12435 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 12436 if (!hdr) { 12437 nlmsg_free(msg); 12438 return; 12439 } 12440 12441 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 12442 goto nla_put_failure; 12443 12444 /* NOP and radar events don't need a netdev parameter */ 12445 if (netdev) { 12446 struct wireless_dev *wdev = netdev->ieee80211_ptr; 12447 12448 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12449 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12450 goto nla_put_failure; 12451 } 12452 12453 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 12454 goto nla_put_failure; 12455 12456 if (nl80211_send_chandef(msg, chandef)) 12457 goto nla_put_failure; 12458 12459 genlmsg_end(msg, hdr); 12460 12461 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12462 NL80211_MCGRP_MLME, gfp); 12463 return; 12464 12465 nla_put_failure: 12466 genlmsg_cancel(msg, hdr); 12467 nlmsg_free(msg); 12468} 12469 12470void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 12471 u64 cookie, bool acked, gfp_t gfp) 12472{ 12473 struct wireless_dev *wdev = dev->ieee80211_ptr; 12474 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12475 struct sk_buff *msg; 12476 void *hdr; 12477 12478 trace_cfg80211_probe_status(dev, addr, cookie, acked); 12479 12480 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12481 12482 if (!msg) 12483 return; 12484 12485 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 12486 if (!hdr) { 12487 nlmsg_free(msg); 12488 return; 12489 } 12490 12491 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12492 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12493 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12494 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12495 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 12496 goto nla_put_failure; 12497 12498 genlmsg_end(msg, hdr); 12499 12500 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12501 NL80211_MCGRP_MLME, gfp); 12502 return; 12503 12504 nla_put_failure: 12505 genlmsg_cancel(msg, hdr); 12506 nlmsg_free(msg); 12507} 12508EXPORT_SYMBOL(cfg80211_probe_status); 12509 12510void cfg80211_report_obss_beacon(struct wiphy *wiphy, 12511 const u8 *frame, size_t len, 12512 int freq, int sig_dbm) 12513{ 12514 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12515 struct sk_buff *msg; 12516 void *hdr; 12517 struct cfg80211_beacon_registration *reg; 12518 12519 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 12520 12521 spin_lock_bh(&rdev->beacon_registrations_lock); 12522 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 12523 msg = nlmsg_new(len + 100, GFP_ATOMIC); 12524 if (!msg) { 12525 spin_unlock_bh(&rdev->beacon_registrations_lock); 12526 return; 12527 } 12528 12529 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12530 if (!hdr) 12531 goto nla_put_failure; 12532 12533 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12534 (freq && 12535 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 12536 (sig_dbm && 12537 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12538 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 12539 goto nla_put_failure; 12540 12541 genlmsg_end(msg, hdr); 12542 12543 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 12544 } 12545 spin_unlock_bh(&rdev->beacon_registrations_lock); 12546 return; 12547 12548 nla_put_failure: 12549 spin_unlock_bh(&rdev->beacon_registrations_lock); 12550 if (hdr) 12551 genlmsg_cancel(msg, hdr); 12552 nlmsg_free(msg); 12553} 12554EXPORT_SYMBOL(cfg80211_report_obss_beacon); 12555 12556#ifdef CONFIG_PM 12557static int cfg80211_net_detect_results(struct sk_buff *msg, 12558 struct cfg80211_wowlan_wakeup *wakeup) 12559{ 12560 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 12561 struct nlattr *nl_results, *nl_match, *nl_freqs; 12562 int i, j; 12563 12564 nl_results = nla_nest_start( 12565 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 12566 if (!nl_results) 12567 return -EMSGSIZE; 12568 12569 for (i = 0; i < nd->n_matches; i++) { 12570 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 12571 12572 nl_match = nla_nest_start(msg, i); 12573 if (!nl_match) 12574 break; 12575 12576 /* The SSID attribute is optional in nl80211, but for 12577 * simplicity reasons it's always present in the 12578 * cfg80211 structure. If a driver can't pass the 12579 * SSID, that needs to be changed. A zero length SSID 12580 * is still a valid SSID (wildcard), so it cannot be 12581 * used for this purpose. 12582 */ 12583 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 12584 match->ssid.ssid)) { 12585 nla_nest_cancel(msg, nl_match); 12586 goto out; 12587 } 12588 12589 if (match->n_channels) { 12590 nl_freqs = nla_nest_start( 12591 msg, NL80211_ATTR_SCAN_FREQUENCIES); 12592 if (!nl_freqs) { 12593 nla_nest_cancel(msg, nl_match); 12594 goto out; 12595 } 12596 12597 for (j = 0; j < match->n_channels; j++) { 12598 if (nla_put_u32(msg, j, match->channels[j])) { 12599 nla_nest_cancel(msg, nl_freqs); 12600 nla_nest_cancel(msg, nl_match); 12601 goto out; 12602 } 12603 } 12604 12605 nla_nest_end(msg, nl_freqs); 12606 } 12607 12608 nla_nest_end(msg, nl_match); 12609 } 12610 12611out: 12612 nla_nest_end(msg, nl_results); 12613 return 0; 12614} 12615 12616void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 12617 struct cfg80211_wowlan_wakeup *wakeup, 12618 gfp_t gfp) 12619{ 12620 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12621 struct sk_buff *msg; 12622 void *hdr; 12623 int size = 200; 12624 12625 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 12626 12627 if (wakeup) 12628 size += wakeup->packet_present_len; 12629 12630 msg = nlmsg_new(size, gfp); 12631 if (!msg) 12632 return; 12633 12634 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 12635 if (!hdr) 12636 goto free_msg; 12637 12638 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12639 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12640 goto free_msg; 12641 12642 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12643 wdev->netdev->ifindex)) 12644 goto free_msg; 12645 12646 if (wakeup) { 12647 struct nlattr *reasons; 12648 12649 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 12650 if (!reasons) 12651 goto free_msg; 12652 12653 if (wakeup->disconnect && 12654 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 12655 goto free_msg; 12656 if (wakeup->magic_pkt && 12657 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 12658 goto free_msg; 12659 if (wakeup->gtk_rekey_failure && 12660 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 12661 goto free_msg; 12662 if (wakeup->eap_identity_req && 12663 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 12664 goto free_msg; 12665 if (wakeup->four_way_handshake && 12666 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 12667 goto free_msg; 12668 if (wakeup->rfkill_release && 12669 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 12670 goto free_msg; 12671 12672 if (wakeup->pattern_idx >= 0 && 12673 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 12674 wakeup->pattern_idx)) 12675 goto free_msg; 12676 12677 if (wakeup->tcp_match && 12678 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 12679 goto free_msg; 12680 12681 if (wakeup->tcp_connlost && 12682 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 12683 goto free_msg; 12684 12685 if (wakeup->tcp_nomoretokens && 12686 nla_put_flag(msg, 12687 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 12688 goto free_msg; 12689 12690 if (wakeup->packet) { 12691 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 12692 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 12693 12694 if (!wakeup->packet_80211) { 12695 pkt_attr = 12696 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 12697 len_attr = 12698 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 12699 } 12700 12701 if (wakeup->packet_len && 12702 nla_put_u32(msg, len_attr, wakeup->packet_len)) 12703 goto free_msg; 12704 12705 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 12706 wakeup->packet)) 12707 goto free_msg; 12708 } 12709 12710 if (wakeup->net_detect && 12711 cfg80211_net_detect_results(msg, wakeup)) 12712 goto free_msg; 12713 12714 nla_nest_end(msg, reasons); 12715 } 12716 12717 genlmsg_end(msg, hdr); 12718 12719 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12720 NL80211_MCGRP_MLME, gfp); 12721 return; 12722 12723 free_msg: 12724 nlmsg_free(msg); 12725} 12726EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 12727#endif 12728 12729void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 12730 enum nl80211_tdls_operation oper, 12731 u16 reason_code, gfp_t gfp) 12732{ 12733 struct wireless_dev *wdev = dev->ieee80211_ptr; 12734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12735 struct sk_buff *msg; 12736 void *hdr; 12737 12738 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 12739 reason_code); 12740 12741 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12742 if (!msg) 12743 return; 12744 12745 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 12746 if (!hdr) { 12747 nlmsg_free(msg); 12748 return; 12749 } 12750 12751 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12752 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12753 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 12754 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 12755 (reason_code > 0 && 12756 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 12757 goto nla_put_failure; 12758 12759 genlmsg_end(msg, hdr); 12760 12761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12762 NL80211_MCGRP_MLME, gfp); 12763 return; 12764 12765 nla_put_failure: 12766 genlmsg_cancel(msg, hdr); 12767 nlmsg_free(msg); 12768} 12769EXPORT_SYMBOL(cfg80211_tdls_oper_request); 12770 12771static int nl80211_netlink_notify(struct notifier_block * nb, 12772 unsigned long state, 12773 void *_notify) 12774{ 12775 struct netlink_notify *notify = _notify; 12776 struct cfg80211_registered_device *rdev; 12777 struct wireless_dev *wdev; 12778 struct cfg80211_beacon_registration *reg, *tmp; 12779 12780 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 12781 return NOTIFY_DONE; 12782 12783 rcu_read_lock(); 12784 12785 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 12786 bool schedule_destroy_work = false; 12787 bool schedule_scan_stop = false; 12788 struct cfg80211_sched_scan_request *sched_scan_req = 12789 rcu_dereference(rdev->sched_scan_req); 12790 12791 if (sched_scan_req && notify->portid && 12792 sched_scan_req->owner_nlportid == notify->portid) 12793 schedule_scan_stop = true; 12794 12795 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) { 12796 cfg80211_mlme_unregister_socket(wdev, notify->portid); 12797 12798 if (wdev->owner_nlportid == notify->portid) 12799 schedule_destroy_work = true; 12800 } 12801 12802 spin_lock_bh(&rdev->beacon_registrations_lock); 12803 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 12804 list) { 12805 if (reg->nlportid == notify->portid) { 12806 list_del(®->list); 12807 kfree(reg); 12808 break; 12809 } 12810 } 12811 spin_unlock_bh(&rdev->beacon_registrations_lock); 12812 12813 if (schedule_destroy_work) { 12814 struct cfg80211_iface_destroy *destroy; 12815 12816 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 12817 if (destroy) { 12818 destroy->nlportid = notify->portid; 12819 spin_lock(&rdev->destroy_list_lock); 12820 list_add(&destroy->list, &rdev->destroy_list); 12821 spin_unlock(&rdev->destroy_list_lock); 12822 schedule_work(&rdev->destroy_work); 12823 } 12824 } else if (schedule_scan_stop) { 12825 sched_scan_req->owner_nlportid = 0; 12826 12827 if (rdev->ops->sched_scan_stop && 12828 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 12829 schedule_work(&rdev->sched_scan_stop_wk); 12830 } 12831 } 12832 12833 rcu_read_unlock(); 12834 12835 /* 12836 * It is possible that the user space process that is controlling the 12837 * indoor setting disappeared, so notify the regulatory core. 12838 */ 12839 regulatory_netlink_notify(notify->portid); 12840 return NOTIFY_OK; 12841} 12842 12843static struct notifier_block nl80211_netlink_notifier = { 12844 .notifier_call = nl80211_netlink_notify, 12845}; 12846 12847void cfg80211_ft_event(struct net_device *netdev, 12848 struct cfg80211_ft_event_params *ft_event) 12849{ 12850 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 12851 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12852 struct sk_buff *msg; 12853 void *hdr; 12854 12855 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 12856 12857 if (!ft_event->target_ap) 12858 return; 12859 12860 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12861 if (!msg) 12862 return; 12863 12864 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 12865 if (!hdr) 12866 goto out; 12867 12868 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12869 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12870 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 12871 goto out; 12872 12873 if (ft_event->ies && 12874 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 12875 goto out; 12876 if (ft_event->ric_ies && 12877 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 12878 ft_event->ric_ies)) 12879 goto out; 12880 12881 genlmsg_end(msg, hdr); 12882 12883 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12884 NL80211_MCGRP_MLME, GFP_KERNEL); 12885 return; 12886 out: 12887 nlmsg_free(msg); 12888} 12889EXPORT_SYMBOL(cfg80211_ft_event); 12890 12891void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 12892{ 12893 struct cfg80211_registered_device *rdev; 12894 struct sk_buff *msg; 12895 void *hdr; 12896 u32 nlportid; 12897 12898 rdev = wiphy_to_rdev(wdev->wiphy); 12899 if (!rdev->crit_proto_nlportid) 12900 return; 12901 12902 nlportid = rdev->crit_proto_nlportid; 12903 rdev->crit_proto_nlportid = 0; 12904 12905 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12906 if (!msg) 12907 return; 12908 12909 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 12910 if (!hdr) 12911 goto nla_put_failure; 12912 12913 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12914 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12915 goto nla_put_failure; 12916 12917 genlmsg_end(msg, hdr); 12918 12919 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12920 return; 12921 12922 nla_put_failure: 12923 if (hdr) 12924 genlmsg_cancel(msg, hdr); 12925 nlmsg_free(msg); 12926 12927} 12928EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 12929 12930void nl80211_send_ap_stopped(struct wireless_dev *wdev) 12931{ 12932 struct wiphy *wiphy = wdev->wiphy; 12933 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12934 struct sk_buff *msg; 12935 void *hdr; 12936 12937 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12938 if (!msg) 12939 return; 12940 12941 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 12942 if (!hdr) 12943 goto out; 12944 12945 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12946 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 12947 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12948 goto out; 12949 12950 genlmsg_end(msg, hdr); 12951 12952 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 12953 NL80211_MCGRP_MLME, GFP_KERNEL); 12954 return; 12955 out: 12956 nlmsg_free(msg); 12957} 12958 12959/* initialisation/exit functions */ 12960 12961int nl80211_init(void) 12962{ 12963 int err; 12964 12965 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 12966 nl80211_mcgrps); 12967 if (err) 12968 return err; 12969 12970 err = netlink_register_notifier(&nl80211_netlink_notifier); 12971 if (err) 12972 goto err_out; 12973 12974 return 0; 12975 err_out: 12976 genl_unregister_family(&nl80211_fam); 12977 return err; 12978} 12979 12980void nl80211_exit(void) 12981{ 12982 netlink_unregister_notifier(&nl80211_netlink_notifier); 12983 genl_unregister_family(&nl80211_fam); 12984} 12985