1 #ifndef __NET_CFG80211_H 2 #define __NET_CFG80211_H 3 /* 4 * 802.11 device and configuration interface 5 * 6 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/netdevice.h> 14 #include <linux/debugfs.h> 15 #include <linux/list.h> 16 #include <linux/bug.h> 17 #include <linux/netlink.h> 18 #include <linux/skbuff.h> 19 #include <linux/nl80211.h> 20 #include <linux/if_ether.h> 21 #include <linux/ieee80211.h> 22 #include <linux/net.h> 23 #include <net/regulatory.h> 24 25 /** 26 * DOC: Introduction 27 * 28 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 29 * userspace and drivers, and offers some utility functionality associated 30 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 31 * by all modern wireless drivers in Linux, so that they offer a consistent 32 * API through nl80211. For backward compatibility, cfg80211 also offers 33 * wireless extensions to userspace, but hides them from drivers completely. 34 * 35 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 36 * use restrictions. 37 */ 38 39 40 /** 41 * DOC: Device registration 42 * 43 * In order for a driver to use cfg80211, it must register the hardware device 44 * with cfg80211. This happens through a number of hardware capability structs 45 * described below. 46 * 47 * The fundamental structure for each device is the 'wiphy', of which each 48 * instance describes a physical wireless device connected to the system. Each 49 * such wiphy can have zero, one, or many virtual interfaces associated with 50 * it, which need to be identified as such by pointing the network interface's 51 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 52 * the wireless part of the interface, normally this struct is embedded in the 53 * network interface's private data area. Drivers can optionally allow creating 54 * or destroying virtual interfaces on the fly, but without at least one or the 55 * ability to create some the wireless device isn't useful. 56 * 57 * Each wiphy structure contains device capability information, and also has 58 * a pointer to the various operations the driver offers. The definitions and 59 * structures here describe these capabilities in detail. 60 */ 61 62 struct wiphy; 63 64 /* 65 * wireless hardware capability structures 66 */ 67 68 /** 69 * enum ieee80211_band - supported frequency bands 70 * 71 * The bands are assigned this way because the supported 72 * bitrates differ in these bands. 73 * 74 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 75 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 76 * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz) 77 * @IEEE80211_NUM_BANDS: number of defined bands 78 */ 79 enum ieee80211_band { 80 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 81 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 82 IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ, 83 84 /* keep last */ 85 IEEE80211_NUM_BANDS 86 }; 87 88 /** 89 * enum ieee80211_channel_flags - channel flags 90 * 91 * Channel flags set by the regulatory control code. 92 * 93 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 94 * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes 95 * sending probe requests or beaconing. 96 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 97 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 98 * is not permitted. 99 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 100 * is not permitted. 101 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel. 102 * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band, 103 * this flag indicates that an 80 MHz channel cannot use this 104 * channel as the control or any of the secondary channels. 105 * This may be due to the driver or due to regulatory bandwidth 106 * restrictions. 107 * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band, 108 * this flag indicates that an 160 MHz channel cannot use this 109 * channel as the control or any of the secondary channels. 110 * This may be due to the driver or due to regulatory bandwidth 111 * restrictions. 112 */ 113 enum ieee80211_channel_flags { 114 IEEE80211_CHAN_DISABLED = 1<<0, 115 IEEE80211_CHAN_NO_IR = 1<<1, 116 /* hole at 1<<2 */ 117 IEEE80211_CHAN_RADAR = 1<<3, 118 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 119 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 120 IEEE80211_CHAN_NO_OFDM = 1<<6, 121 IEEE80211_CHAN_NO_80MHZ = 1<<7, 122 IEEE80211_CHAN_NO_160MHZ = 1<<8, 123 }; 124 125 #define IEEE80211_CHAN_NO_HT40 \ 126 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 127 128 #define IEEE80211_DFS_MIN_CAC_TIME_MS 60000 129 #define IEEE80211_DFS_MIN_NOP_TIME_MS (30 * 60 * 1000) 130 131 /** 132 * struct ieee80211_channel - channel definition 133 * 134 * This structure describes a single channel for use 135 * with cfg80211. 136 * 137 * @center_freq: center frequency in MHz 138 * @hw_value: hardware-specific value for the channel 139 * @flags: channel flags from &enum ieee80211_channel_flags. 140 * @orig_flags: channel flags at registration time, used by regulatory 141 * code to support devices with additional restrictions 142 * @band: band this channel belongs to. 143 * @max_antenna_gain: maximum antenna gain in dBi 144 * @max_power: maximum transmission power (in dBm) 145 * @max_reg_power: maximum regulatory transmission power (in dBm) 146 * @beacon_found: helper to regulatory code to indicate when a beacon 147 * has been found on this channel. Use regulatory_hint_found_beacon() 148 * to enable this, this is useful only on 5 GHz band. 149 * @orig_mag: internal use 150 * @orig_mpwr: internal use 151 * @dfs_state: current state of this channel. Only relevant if radar is required 152 * on this channel. 153 * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered. 154 */ 155 struct ieee80211_channel { 156 enum ieee80211_band band; 157 u16 center_freq; 158 u16 hw_value; 159 u32 flags; 160 int max_antenna_gain; 161 int max_power; 162 int max_reg_power; 163 bool beacon_found; 164 u32 orig_flags; 165 int orig_mag, orig_mpwr; 166 enum nl80211_dfs_state dfs_state; 167 unsigned long dfs_state_entered; 168 }; 169 170 /** 171 * enum ieee80211_rate_flags - rate flags 172 * 173 * Hardware/specification flags for rates. These are structured 174 * in a way that allows using the same bitrate structure for 175 * different bands/PHY modes. 176 * 177 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 178 * preamble on this bitrate; only relevant in 2.4GHz band and 179 * with CCK rates. 180 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 181 * when used with 802.11a (on the 5 GHz band); filled by the 182 * core code when registering the wiphy. 183 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 184 * when used with 802.11b (on the 2.4 GHz band); filled by the 185 * core code when registering the wiphy. 186 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 187 * when used with 802.11g (on the 2.4 GHz band); filled by the 188 * core code when registering the wiphy. 189 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 190 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode 191 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode 192 */ 193 enum ieee80211_rate_flags { 194 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 195 IEEE80211_RATE_MANDATORY_A = 1<<1, 196 IEEE80211_RATE_MANDATORY_B = 1<<2, 197 IEEE80211_RATE_MANDATORY_G = 1<<3, 198 IEEE80211_RATE_ERP_G = 1<<4, 199 IEEE80211_RATE_SUPPORTS_5MHZ = 1<<5, 200 IEEE80211_RATE_SUPPORTS_10MHZ = 1<<6, 201 }; 202 203 /** 204 * struct ieee80211_rate - bitrate definition 205 * 206 * This structure describes a bitrate that an 802.11 PHY can 207 * operate with. The two values @hw_value and @hw_value_short 208 * are only for driver use when pointers to this structure are 209 * passed around. 210 * 211 * @flags: rate-specific flags 212 * @bitrate: bitrate in units of 100 Kbps 213 * @hw_value: driver/hardware value for this rate 214 * @hw_value_short: driver/hardware value for this rate when 215 * short preamble is used 216 */ 217 struct ieee80211_rate { 218 u32 flags; 219 u16 bitrate; 220 u16 hw_value, hw_value_short; 221 }; 222 223 /** 224 * struct ieee80211_sta_ht_cap - STA's HT capabilities 225 * 226 * This structure describes most essential parameters needed 227 * to describe 802.11n HT capabilities for an STA. 228 * 229 * @ht_supported: is HT supported by the STA 230 * @cap: HT capabilities map as described in 802.11n spec 231 * @ampdu_factor: Maximum A-MPDU length factor 232 * @ampdu_density: Minimum A-MPDU spacing 233 * @mcs: Supported MCS rates 234 */ 235 struct ieee80211_sta_ht_cap { 236 u16 cap; /* use IEEE80211_HT_CAP_ */ 237 bool ht_supported; 238 u8 ampdu_factor; 239 u8 ampdu_density; 240 struct ieee80211_mcs_info mcs; 241 }; 242 243 /** 244 * struct ieee80211_sta_vht_cap - STA's VHT capabilities 245 * 246 * This structure describes most essential parameters needed 247 * to describe 802.11ac VHT capabilities for an STA. 248 * 249 * @vht_supported: is VHT supported by the STA 250 * @cap: VHT capabilities map as described in 802.11ac spec 251 * @vht_mcs: Supported VHT MCS rates 252 */ 253 struct ieee80211_sta_vht_cap { 254 bool vht_supported; 255 u32 cap; /* use IEEE80211_VHT_CAP_ */ 256 struct ieee80211_vht_mcs_info vht_mcs; 257 }; 258 259 /** 260 * struct ieee80211_supported_band - frequency band definition 261 * 262 * This structure describes a frequency band a wiphy 263 * is able to operate in. 264 * 265 * @channels: Array of channels the hardware can operate in 266 * in this band. 267 * @band: the band this structure represents 268 * @n_channels: Number of channels in @channels 269 * @bitrates: Array of bitrates the hardware can operate with 270 * in this band. Must be sorted to give a valid "supported 271 * rates" IE, i.e. CCK rates first, then OFDM. 272 * @n_bitrates: Number of bitrates in @bitrates 273 * @ht_cap: HT capabilities in this band 274 * @vht_cap: VHT capabilities in this band 275 */ 276 struct ieee80211_supported_band { 277 struct ieee80211_channel *channels; 278 struct ieee80211_rate *bitrates; 279 enum ieee80211_band band; 280 int n_channels; 281 int n_bitrates; 282 struct ieee80211_sta_ht_cap ht_cap; 283 struct ieee80211_sta_vht_cap vht_cap; 284 }; 285 286 /* 287 * Wireless hardware/device configuration structures and methods 288 */ 289 290 /** 291 * DOC: Actions and configuration 292 * 293 * Each wireless device and each virtual interface offer a set of configuration 294 * operations and other actions that are invoked by userspace. Each of these 295 * actions is described in the operations structure, and the parameters these 296 * operations use are described separately. 297 * 298 * Additionally, some operations are asynchronous and expect to get status 299 * information via some functions that drivers need to call. 300 * 301 * Scanning and BSS list handling with its associated functionality is described 302 * in a separate chapter. 303 */ 304 305 /** 306 * struct vif_params - describes virtual interface parameters 307 * @use_4addr: use 4-address frames 308 * @macaddr: address to use for this virtual interface. This will only 309 * be used for non-netdevice interfaces. If this parameter is set 310 * to zero address the driver may determine the address as needed. 311 */ 312 struct vif_params { 313 int use_4addr; 314 u8 macaddr[ETH_ALEN]; 315 }; 316 317 /** 318 * struct key_params - key information 319 * 320 * Information about a key 321 * 322 * @key: key material 323 * @key_len: length of key material 324 * @cipher: cipher suite selector 325 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 326 * with the get_key() callback, must be in little endian, 327 * length given by @seq_len. 328 * @seq_len: length of @seq. 329 */ 330 struct key_params { 331 u8 *key; 332 u8 *seq; 333 int key_len; 334 int seq_len; 335 u32 cipher; 336 }; 337 338 /** 339 * struct cfg80211_chan_def - channel definition 340 * @chan: the (control) channel 341 * @width: channel width 342 * @center_freq1: center frequency of first segment 343 * @center_freq2: center frequency of second segment 344 * (only with 80+80 MHz) 345 */ 346 struct cfg80211_chan_def { 347 struct ieee80211_channel *chan; 348 enum nl80211_chan_width width; 349 u32 center_freq1; 350 u32 center_freq2; 351 }; 352 353 /** 354 * cfg80211_get_chandef_type - return old channel type from chandef 355 * @chandef: the channel definition 356 * 357 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given 358 * chandef, which must have a bandwidth allowing this conversion. 359 */ 360 static inline enum nl80211_channel_type 361 cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef) 362 { 363 switch (chandef->width) { 364 case NL80211_CHAN_WIDTH_20_NOHT: 365 return NL80211_CHAN_NO_HT; 366 case NL80211_CHAN_WIDTH_20: 367 return NL80211_CHAN_HT20; 368 case NL80211_CHAN_WIDTH_40: 369 if (chandef->center_freq1 > chandef->chan->center_freq) 370 return NL80211_CHAN_HT40PLUS; 371 return NL80211_CHAN_HT40MINUS; 372 default: 373 WARN_ON(1); 374 return NL80211_CHAN_NO_HT; 375 } 376 } 377 378 /** 379 * cfg80211_chandef_create - create channel definition using channel type 380 * @chandef: the channel definition struct to fill 381 * @channel: the control channel 382 * @chantype: the channel type 383 * 384 * Given a channel type, create a channel definition. 385 */ 386 void cfg80211_chandef_create(struct cfg80211_chan_def *chandef, 387 struct ieee80211_channel *channel, 388 enum nl80211_channel_type chantype); 389 390 /** 391 * cfg80211_chandef_identical - check if two channel definitions are identical 392 * @chandef1: first channel definition 393 * @chandef2: second channel definition 394 * 395 * Return: %true if the channels defined by the channel definitions are 396 * identical, %false otherwise. 397 */ 398 static inline bool 399 cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1, 400 const struct cfg80211_chan_def *chandef2) 401 { 402 return (chandef1->chan == chandef2->chan && 403 chandef1->width == chandef2->width && 404 chandef1->center_freq1 == chandef2->center_freq1 && 405 chandef1->center_freq2 == chandef2->center_freq2); 406 } 407 408 /** 409 * cfg80211_chandef_compatible - check if two channel definitions are compatible 410 * @chandef1: first channel definition 411 * @chandef2: second channel definition 412 * 413 * Return: %NULL if the given channel definitions are incompatible, 414 * chandef1 or chandef2 otherwise. 415 */ 416 const struct cfg80211_chan_def * 417 cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1, 418 const struct cfg80211_chan_def *chandef2); 419 420 /** 421 * cfg80211_chandef_valid - check if a channel definition is valid 422 * @chandef: the channel definition to check 423 * Return: %true if the channel definition is valid. %false otherwise. 424 */ 425 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef); 426 427 /** 428 * cfg80211_chandef_usable - check if secondary channels can be used 429 * @wiphy: the wiphy to validate against 430 * @chandef: the channel definition to check 431 * @prohibited_flags: the regulatory channel flags that must not be set 432 * Return: %true if secondary channels are usable. %false otherwise. 433 */ 434 bool cfg80211_chandef_usable(struct wiphy *wiphy, 435 const struct cfg80211_chan_def *chandef, 436 u32 prohibited_flags); 437 438 /** 439 * cfg80211_chandef_dfs_required - checks if radar detection is required 440 * @wiphy: the wiphy to validate against 441 * @chandef: the channel definition to check 442 * Return: 1 if radar detection is required, 0 if it is not, < 0 on error 443 */ 444 int cfg80211_chandef_dfs_required(struct wiphy *wiphy, 445 const struct cfg80211_chan_def *chandef); 446 447 /** 448 * ieee80211_chandef_rate_flags - returns rate flags for a channel 449 * 450 * In some channel types, not all rates may be used - for example CCK 451 * rates may not be used in 5/10 MHz channels. 452 * 453 * @chandef: channel definition for the channel 454 * 455 * Returns: rate flags which apply for this channel 456 */ 457 static inline enum ieee80211_rate_flags 458 ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef) 459 { 460 switch (chandef->width) { 461 case NL80211_CHAN_WIDTH_5: 462 return IEEE80211_RATE_SUPPORTS_5MHZ; 463 case NL80211_CHAN_WIDTH_10: 464 return IEEE80211_RATE_SUPPORTS_10MHZ; 465 default: 466 break; 467 } 468 return 0; 469 } 470 471 /** 472 * ieee80211_chandef_max_power - maximum transmission power for the chandef 473 * 474 * In some regulations, the transmit power may depend on the configured channel 475 * bandwidth which may be defined as dBm/MHz. This function returns the actual 476 * max_power for non-standard (20 MHz) channels. 477 * 478 * @chandef: channel definition for the channel 479 * 480 * Returns: maximum allowed transmission power in dBm for the chandef 481 */ 482 static inline int 483 ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef) 484 { 485 switch (chandef->width) { 486 case NL80211_CHAN_WIDTH_5: 487 return min(chandef->chan->max_reg_power - 6, 488 chandef->chan->max_power); 489 case NL80211_CHAN_WIDTH_10: 490 return min(chandef->chan->max_reg_power - 3, 491 chandef->chan->max_power); 492 default: 493 break; 494 } 495 return chandef->chan->max_power; 496 } 497 498 /** 499 * enum survey_info_flags - survey information flags 500 * 501 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 502 * @SURVEY_INFO_IN_USE: channel is currently being used 503 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in 504 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in 505 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in 506 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in 507 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in 508 * 509 * Used by the driver to indicate which info in &struct survey_info 510 * it has filled in during the get_survey(). 511 */ 512 enum survey_info_flags { 513 SURVEY_INFO_NOISE_DBM = 1<<0, 514 SURVEY_INFO_IN_USE = 1<<1, 515 SURVEY_INFO_CHANNEL_TIME = 1<<2, 516 SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, 517 SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, 518 SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, 519 SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, 520 }; 521 522 /** 523 * struct survey_info - channel survey response 524 * 525 * @channel: the channel this survey record reports, mandatory 526 * @filled: bitflag of flags from &enum survey_info_flags 527 * @noise: channel noise in dBm. This and all following fields are 528 * optional 529 * @channel_time: amount of time in ms the radio spent on the channel 530 * @channel_time_busy: amount of time the primary channel was sensed busy 531 * @channel_time_ext_busy: amount of time the extension channel was sensed busy 532 * @channel_time_rx: amount of time the radio spent receiving data 533 * @channel_time_tx: amount of time the radio spent transmitting data 534 * 535 * Used by dump_survey() to report back per-channel survey information. 536 * 537 * This structure can later be expanded with things like 538 * channel duty cycle etc. 539 */ 540 struct survey_info { 541 struct ieee80211_channel *channel; 542 u64 channel_time; 543 u64 channel_time_busy; 544 u64 channel_time_ext_busy; 545 u64 channel_time_rx; 546 u64 channel_time_tx; 547 u32 filled; 548 s8 noise; 549 }; 550 551 /** 552 * struct cfg80211_crypto_settings - Crypto settings 553 * @wpa_versions: indicates which, if any, WPA versions are enabled 554 * (from enum nl80211_wpa_versions) 555 * @cipher_group: group key cipher suite (or 0 if unset) 556 * @n_ciphers_pairwise: number of AP supported unicast ciphers 557 * @ciphers_pairwise: unicast key cipher suites 558 * @n_akm_suites: number of AKM suites 559 * @akm_suites: AKM suites 560 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 561 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 562 * required to assume that the port is unauthorized until authorized by 563 * user space. Otherwise, port is marked authorized by default. 564 * @control_port_ethertype: the control port protocol that should be 565 * allowed through even on unauthorized ports 566 * @control_port_no_encrypt: TRUE to prevent encryption of control port 567 * protocol frames. 568 */ 569 struct cfg80211_crypto_settings { 570 u32 wpa_versions; 571 u32 cipher_group; 572 int n_ciphers_pairwise; 573 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 574 int n_akm_suites; 575 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 576 bool control_port; 577 __be16 control_port_ethertype; 578 bool control_port_no_encrypt; 579 }; 580 581 /** 582 * struct cfg80211_beacon_data - beacon data 583 * @head: head portion of beacon (before TIM IE) 584 * or %NULL if not changed 585 * @tail: tail portion of beacon (after TIM IE) 586 * or %NULL if not changed 587 * @head_len: length of @head 588 * @tail_len: length of @tail 589 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL 590 * @beacon_ies_len: length of beacon_ies in octets 591 * @proberesp_ies: extra information element(s) to add into Probe Response 592 * frames or %NULL 593 * @proberesp_ies_len: length of proberesp_ies in octets 594 * @assocresp_ies: extra information element(s) to add into (Re)Association 595 * Response frames or %NULL 596 * @assocresp_ies_len: length of assocresp_ies in octets 597 * @probe_resp_len: length of probe response template (@probe_resp) 598 * @probe_resp: probe response template (AP mode only) 599 */ 600 struct cfg80211_beacon_data { 601 const u8 *head, *tail; 602 const u8 *beacon_ies; 603 const u8 *proberesp_ies; 604 const u8 *assocresp_ies; 605 const u8 *probe_resp; 606 607 size_t head_len, tail_len; 608 size_t beacon_ies_len; 609 size_t proberesp_ies_len; 610 size_t assocresp_ies_len; 611 size_t probe_resp_len; 612 }; 613 614 struct mac_address { 615 u8 addr[ETH_ALEN]; 616 }; 617 618 /** 619 * struct cfg80211_acl_data - Access control list data 620 * 621 * @acl_policy: ACL policy to be applied on the station's 622 * entry specified by mac_addr 623 * @n_acl_entries: Number of MAC address entries passed 624 * @mac_addrs: List of MAC addresses of stations to be used for ACL 625 */ 626 struct cfg80211_acl_data { 627 enum nl80211_acl_policy acl_policy; 628 int n_acl_entries; 629 630 /* Keep it last */ 631 struct mac_address mac_addrs[]; 632 }; 633 634 /** 635 * struct cfg80211_ap_settings - AP configuration 636 * 637 * Used to configure an AP interface. 638 * 639 * @chandef: defines the channel to use 640 * @beacon: beacon data 641 * @beacon_interval: beacon interval 642 * @dtim_period: DTIM period 643 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from 644 * user space) 645 * @ssid_len: length of @ssid 646 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames 647 * @crypto: crypto settings 648 * @privacy: the BSS uses privacy 649 * @auth_type: Authentication type (algorithm) 650 * @inactivity_timeout: time in seconds to determine station's inactivity. 651 * @p2p_ctwindow: P2P CT Window 652 * @p2p_opp_ps: P2P opportunistic PS 653 * @acl: ACL configuration used by the drivers which has support for 654 * MAC address based access control 655 * @radar_required: set if radar detection is required 656 */ 657 struct cfg80211_ap_settings { 658 struct cfg80211_chan_def chandef; 659 660 struct cfg80211_beacon_data beacon; 661 662 int beacon_interval, dtim_period; 663 const u8 *ssid; 664 size_t ssid_len; 665 enum nl80211_hidden_ssid hidden_ssid; 666 struct cfg80211_crypto_settings crypto; 667 bool privacy; 668 enum nl80211_auth_type auth_type; 669 int inactivity_timeout; 670 u8 p2p_ctwindow; 671 bool p2p_opp_ps; 672 const struct cfg80211_acl_data *acl; 673 bool radar_required; 674 }; 675 676 /** 677 * struct cfg80211_csa_settings - channel switch settings 678 * 679 * Used for channel switch 680 * 681 * @chandef: defines the channel to use after the switch 682 * @beacon_csa: beacon data while performing the switch 683 * @counter_offset_beacon: offset for the counter within the beacon (tail) 684 * @counter_offset_presp: offset for the counter within the probe response 685 * @beacon_after: beacon data to be used on the new channel 686 * @radar_required: whether radar detection is required on the new channel 687 * @block_tx: whether transmissions should be blocked while changing 688 * @count: number of beacons until switch 689 */ 690 struct cfg80211_csa_settings { 691 struct cfg80211_chan_def chandef; 692 struct cfg80211_beacon_data beacon_csa; 693 u16 counter_offset_beacon, counter_offset_presp; 694 struct cfg80211_beacon_data beacon_after; 695 bool radar_required; 696 bool block_tx; 697 u8 count; 698 }; 699 700 /** 701 * enum station_parameters_apply_mask - station parameter values to apply 702 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp) 703 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability 704 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state 705 * 706 * Not all station parameters have in-band "no change" signalling, 707 * for those that don't these flags will are used. 708 */ 709 enum station_parameters_apply_mask { 710 STATION_PARAM_APPLY_UAPSD = BIT(0), 711 STATION_PARAM_APPLY_CAPABILITY = BIT(1), 712 STATION_PARAM_APPLY_PLINK_STATE = BIT(2), 713 }; 714 715 /** 716 * struct station_parameters - station parameters 717 * 718 * Used to change and create a new station. 719 * 720 * @vlan: vlan interface station should belong to 721 * @supported_rates: supported rates in IEEE 802.11 format 722 * (or NULL for no change) 723 * @supported_rates_len: number of supported rates 724 * @sta_flags_mask: station flags that changed 725 * (bitmask of BIT(NL80211_STA_FLAG_...)) 726 * @sta_flags_set: station flags values 727 * (bitmask of BIT(NL80211_STA_FLAG_...)) 728 * @listen_interval: listen interval or -1 for no change 729 * @aid: AID or zero for no change 730 * @plink_action: plink action to take 731 * @plink_state: set the peer link state for a station 732 * @ht_capa: HT capabilities of station 733 * @vht_capa: VHT capabilities of station 734 * @uapsd_queues: bitmap of queues configured for uapsd. same format 735 * as the AC bitmap in the QoS info field 736 * @max_sp: max Service Period. same format as the MAX_SP in the 737 * QoS info field (but already shifted down) 738 * @sta_modify_mask: bitmap indicating which parameters changed 739 * (for those that don't have a natural "no change" value), 740 * see &enum station_parameters_apply_mask 741 * @local_pm: local link-specific mesh power save mode (no change when set 742 * to unknown) 743 * @capability: station capability 744 * @ext_capab: extended capabilities of the station 745 * @ext_capab_len: number of extended capabilities 746 * @supported_channels: supported channels in IEEE 802.11 format 747 * @supported_channels_len: number of supported channels 748 * @supported_oper_classes: supported oper classes in IEEE 802.11 format 749 * @supported_oper_classes_len: number of supported operating classes 750 * @opmode_notif: operating mode field from Operating Mode Notification 751 * @opmode_notif_used: information if operating mode field is used 752 */ 753 struct station_parameters { 754 const u8 *supported_rates; 755 struct net_device *vlan; 756 u32 sta_flags_mask, sta_flags_set; 757 u32 sta_modify_mask; 758 int listen_interval; 759 u16 aid; 760 u8 supported_rates_len; 761 u8 plink_action; 762 u8 plink_state; 763 const struct ieee80211_ht_cap *ht_capa; 764 const struct ieee80211_vht_cap *vht_capa; 765 u8 uapsd_queues; 766 u8 max_sp; 767 enum nl80211_mesh_power_mode local_pm; 768 u16 capability; 769 const u8 *ext_capab; 770 u8 ext_capab_len; 771 const u8 *supported_channels; 772 u8 supported_channels_len; 773 const u8 *supported_oper_classes; 774 u8 supported_oper_classes_len; 775 u8 opmode_notif; 776 bool opmode_notif_used; 777 }; 778 779 /** 780 * enum cfg80211_station_type - the type of station being modified 781 * @CFG80211_STA_AP_CLIENT: client of an AP interface 782 * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has 783 * the AP MLME in the device 784 * @CFG80211_STA_AP_STA: AP station on managed interface 785 * @CFG80211_STA_IBSS: IBSS station 786 * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry 787 * while TDLS setup is in progress, it moves out of this state when 788 * being marked authorized; use this only if TDLS with external setup is 789 * supported/used) 790 * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active 791 * entry that is operating, has been marked authorized by userspace) 792 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed) 793 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed) 794 */ 795 enum cfg80211_station_type { 796 CFG80211_STA_AP_CLIENT, 797 CFG80211_STA_AP_MLME_CLIENT, 798 CFG80211_STA_AP_STA, 799 CFG80211_STA_IBSS, 800 CFG80211_STA_TDLS_PEER_SETUP, 801 CFG80211_STA_TDLS_PEER_ACTIVE, 802 CFG80211_STA_MESH_PEER_KERNEL, 803 CFG80211_STA_MESH_PEER_USER, 804 }; 805 806 /** 807 * cfg80211_check_station_change - validate parameter changes 808 * @wiphy: the wiphy this operates on 809 * @params: the new parameters for a station 810 * @statype: the type of station being modified 811 * 812 * Utility function for the @change_station driver method. Call this function 813 * with the appropriate station type looking up the station (and checking that 814 * it exists). It will verify whether the station change is acceptable, and if 815 * not will return an error code. Note that it may modify the parameters for 816 * backward compatibility reasons, so don't use them before calling this. 817 */ 818 int cfg80211_check_station_change(struct wiphy *wiphy, 819 struct station_parameters *params, 820 enum cfg80211_station_type statype); 821 822 /** 823 * enum station_info_flags - station information flags 824 * 825 * Used by the driver to indicate which info in &struct station_info 826 * it has filled in during get_station() or dump_station(). 827 * 828 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 829 * @STATION_INFO_RX_BYTES: @rx_bytes filled 830 * @STATION_INFO_TX_BYTES: @tx_bytes filled 831 * @STATION_INFO_RX_BYTES64: @rx_bytes filled with 64-bit value 832 * @STATION_INFO_TX_BYTES64: @tx_bytes filled with 64-bit value 833 * @STATION_INFO_LLID: @llid filled 834 * @STATION_INFO_PLID: @plid filled 835 * @STATION_INFO_PLINK_STATE: @plink_state filled 836 * @STATION_INFO_SIGNAL: @signal filled 837 * @STATION_INFO_TX_BITRATE: @txrate fields are filled 838 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 839 * @STATION_INFO_RX_PACKETS: @rx_packets filled with 32-bit value 840 * @STATION_INFO_TX_PACKETS: @tx_packets filled with 32-bit value 841 * @STATION_INFO_TX_RETRIES: @tx_retries filled 842 * @STATION_INFO_TX_FAILED: @tx_failed filled 843 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled 844 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled 845 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled 846 * @STATION_INFO_BSS_PARAM: @bss_param filled 847 * @STATION_INFO_CONNECTED_TIME: @connected_time filled 848 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled 849 * @STATION_INFO_STA_FLAGS: @sta_flags filled 850 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled 851 * @STATION_INFO_T_OFFSET: @t_offset filled 852 * @STATION_INFO_LOCAL_PM: @local_pm filled 853 * @STATION_INFO_PEER_PM: @peer_pm filled 854 * @STATION_INFO_NONPEER_PM: @nonpeer_pm filled 855 * @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled 856 * @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg filled 857 */ 858 enum station_info_flags { 859 STATION_INFO_INACTIVE_TIME = 1<<0, 860 STATION_INFO_RX_BYTES = 1<<1, 861 STATION_INFO_TX_BYTES = 1<<2, 862 STATION_INFO_LLID = 1<<3, 863 STATION_INFO_PLID = 1<<4, 864 STATION_INFO_PLINK_STATE = 1<<5, 865 STATION_INFO_SIGNAL = 1<<6, 866 STATION_INFO_TX_BITRATE = 1<<7, 867 STATION_INFO_RX_PACKETS = 1<<8, 868 STATION_INFO_TX_PACKETS = 1<<9, 869 STATION_INFO_TX_RETRIES = 1<<10, 870 STATION_INFO_TX_FAILED = 1<<11, 871 STATION_INFO_RX_DROP_MISC = 1<<12, 872 STATION_INFO_SIGNAL_AVG = 1<<13, 873 STATION_INFO_RX_BITRATE = 1<<14, 874 STATION_INFO_BSS_PARAM = 1<<15, 875 STATION_INFO_CONNECTED_TIME = 1<<16, 876 STATION_INFO_ASSOC_REQ_IES = 1<<17, 877 STATION_INFO_STA_FLAGS = 1<<18, 878 STATION_INFO_BEACON_LOSS_COUNT = 1<<19, 879 STATION_INFO_T_OFFSET = 1<<20, 880 STATION_INFO_LOCAL_PM = 1<<21, 881 STATION_INFO_PEER_PM = 1<<22, 882 STATION_INFO_NONPEER_PM = 1<<23, 883 STATION_INFO_RX_BYTES64 = 1<<24, 884 STATION_INFO_TX_BYTES64 = 1<<25, 885 STATION_INFO_CHAIN_SIGNAL = 1<<26, 886 STATION_INFO_CHAIN_SIGNAL_AVG = 1<<27, 887 }; 888 889 /** 890 * enum station_info_rate_flags - bitrate info flags 891 * 892 * Used by the driver to indicate the specific rate transmission 893 * type for 802.11n transmissions. 894 * 895 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS 896 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS 897 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 MHz width transmission 898 * @RATE_INFO_FLAGS_80_MHZ_WIDTH: 80 MHz width transmission 899 * @RATE_INFO_FLAGS_80P80_MHZ_WIDTH: 80+80 MHz width transmission 900 * @RATE_INFO_FLAGS_160_MHZ_WIDTH: 160 MHz width transmission 901 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 902 * @RATE_INFO_FLAGS_60G: 60GHz MCS 903 */ 904 enum rate_info_flags { 905 RATE_INFO_FLAGS_MCS = BIT(0), 906 RATE_INFO_FLAGS_VHT_MCS = BIT(1), 907 RATE_INFO_FLAGS_40_MHZ_WIDTH = BIT(2), 908 RATE_INFO_FLAGS_80_MHZ_WIDTH = BIT(3), 909 RATE_INFO_FLAGS_80P80_MHZ_WIDTH = BIT(4), 910 RATE_INFO_FLAGS_160_MHZ_WIDTH = BIT(5), 911 RATE_INFO_FLAGS_SHORT_GI = BIT(6), 912 RATE_INFO_FLAGS_60G = BIT(7), 913 }; 914 915 /** 916 * struct rate_info - bitrate information 917 * 918 * Information about a receiving or transmitting bitrate 919 * 920 * @flags: bitflag of flags from &enum rate_info_flags 921 * @mcs: mcs index if struct describes a 802.11n bitrate 922 * @legacy: bitrate in 100kbit/s for 802.11abg 923 * @nss: number of streams (VHT only) 924 */ 925 struct rate_info { 926 u8 flags; 927 u8 mcs; 928 u16 legacy; 929 u8 nss; 930 }; 931 932 /** 933 * enum station_info_rate_flags - bitrate info flags 934 * 935 * Used by the driver to indicate the specific rate transmission 936 * type for 802.11n transmissions. 937 * 938 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 939 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 940 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 941 */ 942 enum bss_param_flags { 943 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 944 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 945 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 946 }; 947 948 /** 949 * struct sta_bss_parameters - BSS parameters for the attached station 950 * 951 * Information about the currently associated BSS 952 * 953 * @flags: bitflag of flags from &enum bss_param_flags 954 * @dtim_period: DTIM period for the BSS 955 * @beacon_interval: beacon interval 956 */ 957 struct sta_bss_parameters { 958 u8 flags; 959 u8 dtim_period; 960 u16 beacon_interval; 961 }; 962 963 #define IEEE80211_MAX_CHAINS 4 964 965 /** 966 * struct station_info - station information 967 * 968 * Station information filled by driver for get_station() and dump_station. 969 * 970 * @filled: bitflag of flags from &enum station_info_flags 971 * @connected_time: time(in secs) since a station is last connected 972 * @inactive_time: time since last station activity (tx/rx) in milliseconds 973 * @rx_bytes: bytes received from this station 974 * @tx_bytes: bytes transmitted to this station 975 * @llid: mesh local link id 976 * @plid: mesh peer link id 977 * @plink_state: mesh peer link state 978 * @signal: The signal strength, type depends on the wiphy's signal_type. 979 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 980 * @signal_avg: Average signal strength, type depends on the wiphy's signal_type. 981 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 982 * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg 983 * @chain_signal: per-chain signal strength of last received packet in dBm 984 * @chain_signal_avg: per-chain signal strength average in dBm 985 * @txrate: current unicast bitrate from this station 986 * @rxrate: current unicast bitrate to this station 987 * @rx_packets: packets received from this station 988 * @tx_packets: packets transmitted to this station 989 * @tx_retries: cumulative retry counts 990 * @tx_failed: number of failed transmissions (retries exceeded, no ACK) 991 * @rx_dropped_misc: Dropped for un-specified reason. 992 * @bss_param: current BSS parameters 993 * @generation: generation number for nl80211 dumps. 994 * This number should increase every time the list of stations 995 * changes, i.e. when a station is added or removed, so that 996 * userspace can tell whether it got a consistent snapshot. 997 * @assoc_req_ies: IEs from (Re)Association Request. 998 * This is used only when in AP mode with drivers that do not use 999 * user space MLME/SME implementation. The information is provided for 1000 * the cfg80211_new_sta() calls to notify user space of the IEs. 1001 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets. 1002 * @sta_flags: station flags mask & values 1003 * @beacon_loss_count: Number of times beacon loss event has triggered. 1004 * @t_offset: Time offset of the station relative to this host. 1005 * @local_pm: local mesh STA power save mode 1006 * @peer_pm: peer mesh STA power save mode 1007 * @nonpeer_pm: non-peer mesh STA power save mode 1008 */ 1009 struct station_info { 1010 u32 filled; 1011 u32 connected_time; 1012 u32 inactive_time; 1013 u64 rx_bytes; 1014 u64 tx_bytes; 1015 u16 llid; 1016 u16 plid; 1017 u8 plink_state; 1018 s8 signal; 1019 s8 signal_avg; 1020 1021 u8 chains; 1022 s8 chain_signal[IEEE80211_MAX_CHAINS]; 1023 s8 chain_signal_avg[IEEE80211_MAX_CHAINS]; 1024 1025 struct rate_info txrate; 1026 struct rate_info rxrate; 1027 u32 rx_packets; 1028 u32 tx_packets; 1029 u32 tx_retries; 1030 u32 tx_failed; 1031 u32 rx_dropped_misc; 1032 struct sta_bss_parameters bss_param; 1033 struct nl80211_sta_flag_update sta_flags; 1034 1035 int generation; 1036 1037 const u8 *assoc_req_ies; 1038 size_t assoc_req_ies_len; 1039 1040 u32 beacon_loss_count; 1041 s64 t_offset; 1042 enum nl80211_mesh_power_mode local_pm; 1043 enum nl80211_mesh_power_mode peer_pm; 1044 enum nl80211_mesh_power_mode nonpeer_pm; 1045 1046 /* 1047 * Note: Add a new enum station_info_flags value for each new field and 1048 * use it to check which fields are initialized. 1049 */ 1050 }; 1051 1052 /** 1053 * enum monitor_flags - monitor flags 1054 * 1055 * Monitor interface configuration flags. Note that these must be the bits 1056 * according to the nl80211 flags. 1057 * 1058 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 1059 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 1060 * @MONITOR_FLAG_CONTROL: pass control frames 1061 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 1062 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 1063 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address 1064 */ 1065 enum monitor_flags { 1066 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 1067 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 1068 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 1069 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 1070 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 1071 MONITOR_FLAG_ACTIVE = 1<<NL80211_MNTR_FLAG_ACTIVE, 1072 }; 1073 1074 /** 1075 * enum mpath_info_flags - mesh path information flags 1076 * 1077 * Used by the driver to indicate which info in &struct mpath_info it has filled 1078 * in during get_station() or dump_station(). 1079 * 1080 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 1081 * @MPATH_INFO_SN: @sn filled 1082 * @MPATH_INFO_METRIC: @metric filled 1083 * @MPATH_INFO_EXPTIME: @exptime filled 1084 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 1085 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 1086 * @MPATH_INFO_FLAGS: @flags filled 1087 */ 1088 enum mpath_info_flags { 1089 MPATH_INFO_FRAME_QLEN = BIT(0), 1090 MPATH_INFO_SN = BIT(1), 1091 MPATH_INFO_METRIC = BIT(2), 1092 MPATH_INFO_EXPTIME = BIT(3), 1093 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 1094 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 1095 MPATH_INFO_FLAGS = BIT(6), 1096 }; 1097 1098 /** 1099 * struct mpath_info - mesh path information 1100 * 1101 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 1102 * 1103 * @filled: bitfield of flags from &enum mpath_info_flags 1104 * @frame_qlen: number of queued frames for this destination 1105 * @sn: target sequence number 1106 * @metric: metric (cost) of this mesh path 1107 * @exptime: expiration time for the mesh path from now, in msecs 1108 * @flags: mesh path flags 1109 * @discovery_timeout: total mesh path discovery timeout, in msecs 1110 * @discovery_retries: mesh path discovery retries 1111 * @generation: generation number for nl80211 dumps. 1112 * This number should increase every time the list of mesh paths 1113 * changes, i.e. when a station is added or removed, so that 1114 * userspace can tell whether it got a consistent snapshot. 1115 */ 1116 struct mpath_info { 1117 u32 filled; 1118 u32 frame_qlen; 1119 u32 sn; 1120 u32 metric; 1121 u32 exptime; 1122 u32 discovery_timeout; 1123 u8 discovery_retries; 1124 u8 flags; 1125 1126 int generation; 1127 }; 1128 1129 /** 1130 * struct bss_parameters - BSS parameters 1131 * 1132 * Used to change BSS parameters (mainly for AP mode). 1133 * 1134 * @use_cts_prot: Whether to use CTS protection 1135 * (0 = no, 1 = yes, -1 = do not change) 1136 * @use_short_preamble: Whether the use of short preambles is allowed 1137 * (0 = no, 1 = yes, -1 = do not change) 1138 * @use_short_slot_time: Whether the use of short slot time is allowed 1139 * (0 = no, 1 = yes, -1 = do not change) 1140 * @basic_rates: basic rates in IEEE 802.11 format 1141 * (or NULL for no change) 1142 * @basic_rates_len: number of basic rates 1143 * @ap_isolate: do not forward packets between connected stations 1144 * @ht_opmode: HT Operation mode 1145 * (u16 = opmode, -1 = do not change) 1146 * @p2p_ctwindow: P2P CT Window (-1 = no change) 1147 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change) 1148 */ 1149 struct bss_parameters { 1150 int use_cts_prot; 1151 int use_short_preamble; 1152 int use_short_slot_time; 1153 u8 *basic_rates; 1154 u8 basic_rates_len; 1155 int ap_isolate; 1156 int ht_opmode; 1157 s8 p2p_ctwindow, p2p_opp_ps; 1158 }; 1159 1160 /** 1161 * struct mesh_config - 802.11s mesh configuration 1162 * 1163 * These parameters can be changed while the mesh is active. 1164 * 1165 * @dot11MeshRetryTimeout: the initial retry timeout in millisecond units used 1166 * by the Mesh Peering Open message 1167 * @dot11MeshConfirmTimeout: the initial retry timeout in millisecond units 1168 * used by the Mesh Peering Open message 1169 * @dot11MeshHoldingTimeout: the confirm timeout in millisecond units used by 1170 * the mesh peering management to close a mesh peering 1171 * @dot11MeshMaxPeerLinks: the maximum number of peer links allowed on this 1172 * mesh interface 1173 * @dot11MeshMaxRetries: the maximum number of peer link open retries that can 1174 * be sent to establish a new peer link instance in a mesh 1175 * @dot11MeshTTL: the value of TTL field set at a source mesh STA 1176 * @element_ttl: the value of TTL field set at a mesh STA for path selection 1177 * elements 1178 * @auto_open_plinks: whether we should automatically open peer links when we 1179 * detect compatible mesh peers 1180 * @dot11MeshNbrOffsetMaxNeighbor: the maximum number of neighbors to 1181 * synchronize to for 11s default synchronization method 1182 * @dot11MeshHWMPmaxPREQretries: the number of action frames containing a PREQ 1183 * that an originator mesh STA can send to a particular path target 1184 * @path_refresh_time: how frequently to refresh mesh paths in milliseconds 1185 * @min_discovery_timeout: the minimum length of time to wait until giving up on 1186 * a path discovery in milliseconds 1187 * @dot11MeshHWMPactivePathTimeout: the time (in TUs) for which mesh STAs 1188 * receiving a PREQ shall consider the forwarding information from the 1189 * root to be valid. (TU = time unit) 1190 * @dot11MeshHWMPpreqMinInterval: the minimum interval of time (in TUs) during 1191 * which a mesh STA can send only one action frame containing a PREQ 1192 * element 1193 * @dot11MeshHWMPperrMinInterval: the minimum interval of time (in TUs) during 1194 * which a mesh STA can send only one Action frame containing a PERR 1195 * element 1196 * @dot11MeshHWMPnetDiameterTraversalTime: the interval of time (in TUs) that 1197 * it takes for an HWMP information element to propagate across the mesh 1198 * @dot11MeshHWMPRootMode: the configuration of a mesh STA as root mesh STA 1199 * @dot11MeshHWMPRannInterval: the interval of time (in TUs) between root 1200 * announcements are transmitted 1201 * @dot11MeshGateAnnouncementProtocol: whether to advertise that this mesh 1202 * station has access to a broader network beyond the MBSS. (This is 1203 * missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol set to true 1204 * only means that the station will announce others it's a mesh gate, but 1205 * not necessarily using the gate announcement protocol. Still keeping the 1206 * same nomenclature to be in sync with the spec) 1207 * @dot11MeshForwarding: whether the Mesh STA is forwarding or non-forwarding 1208 * entity (default is TRUE - forwarding entity) 1209 * @rssi_threshold: the threshold for average signal strength of candidate 1210 * station to establish a peer link 1211 * @ht_opmode: mesh HT protection mode 1212 * 1213 * @dot11MeshHWMPactivePathToRootTimeout: The time (in TUs) for which mesh STAs 1214 * receiving a proactive PREQ shall consider the forwarding information to 1215 * the root mesh STA to be valid. 1216 * 1217 * @dot11MeshHWMProotInterval: The interval of time (in TUs) between proactive 1218 * PREQs are transmitted. 1219 * @dot11MeshHWMPconfirmationInterval: The minimum interval of time (in TUs) 1220 * during which a mesh STA can send only one Action frame containing 1221 * a PREQ element for root path confirmation. 1222 * @power_mode: The default mesh power save mode which will be the initial 1223 * setting for new peer links. 1224 * @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake 1225 * after transmitting its beacon. 1226 * @plink_timeout: If no tx activity is seen from a STA we've established 1227 * peering with for longer than this time (in seconds), then remove it 1228 * from the STA's list of peers. Default is 30 minutes. 1229 */ 1230 struct mesh_config { 1231 u16 dot11MeshRetryTimeout; 1232 u16 dot11MeshConfirmTimeout; 1233 u16 dot11MeshHoldingTimeout; 1234 u16 dot11MeshMaxPeerLinks; 1235 u8 dot11MeshMaxRetries; 1236 u8 dot11MeshTTL; 1237 u8 element_ttl; 1238 bool auto_open_plinks; 1239 u32 dot11MeshNbrOffsetMaxNeighbor; 1240 u8 dot11MeshHWMPmaxPREQretries; 1241 u32 path_refresh_time; 1242 u16 min_discovery_timeout; 1243 u32 dot11MeshHWMPactivePathTimeout; 1244 u16 dot11MeshHWMPpreqMinInterval; 1245 u16 dot11MeshHWMPperrMinInterval; 1246 u16 dot11MeshHWMPnetDiameterTraversalTime; 1247 u8 dot11MeshHWMPRootMode; 1248 u16 dot11MeshHWMPRannInterval; 1249 bool dot11MeshGateAnnouncementProtocol; 1250 bool dot11MeshForwarding; 1251 s32 rssi_threshold; 1252 u16 ht_opmode; 1253 u32 dot11MeshHWMPactivePathToRootTimeout; 1254 u16 dot11MeshHWMProotInterval; 1255 u16 dot11MeshHWMPconfirmationInterval; 1256 enum nl80211_mesh_power_mode power_mode; 1257 u16 dot11MeshAwakeWindowDuration; 1258 u32 plink_timeout; 1259 }; 1260 1261 /** 1262 * struct mesh_setup - 802.11s mesh setup configuration 1263 * @chandef: defines the channel to use 1264 * @mesh_id: the mesh ID 1265 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 1266 * @sync_method: which synchronization method to use 1267 * @path_sel_proto: which path selection protocol to use 1268 * @path_metric: which metric to use 1269 * @auth_id: which authentication method this mesh is using 1270 * @ie: vendor information elements (optional) 1271 * @ie_len: length of vendor information elements 1272 * @is_authenticated: this mesh requires authentication 1273 * @is_secure: this mesh uses security 1274 * @user_mpm: userspace handles all MPM functions 1275 * @dtim_period: DTIM period to use 1276 * @beacon_interval: beacon interval to use 1277 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] 1278 * @basic_rates: basic rates to use when creating the mesh 1279 * 1280 * These parameters are fixed when the mesh is created. 1281 */ 1282 struct mesh_setup { 1283 struct cfg80211_chan_def chandef; 1284 const u8 *mesh_id; 1285 u8 mesh_id_len; 1286 u8 sync_method; 1287 u8 path_sel_proto; 1288 u8 path_metric; 1289 u8 auth_id; 1290 const u8 *ie; 1291 u8 ie_len; 1292 bool is_authenticated; 1293 bool is_secure; 1294 bool user_mpm; 1295 u8 dtim_period; 1296 u16 beacon_interval; 1297 int mcast_rate[IEEE80211_NUM_BANDS]; 1298 u32 basic_rates; 1299 }; 1300 1301 /** 1302 * struct ieee80211_txq_params - TX queue parameters 1303 * @ac: AC identifier 1304 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 1305 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 1306 * 1..32767] 1307 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 1308 * 1..32767] 1309 * @aifs: Arbitration interframe space [0..255] 1310 */ 1311 struct ieee80211_txq_params { 1312 enum nl80211_ac ac; 1313 u16 txop; 1314 u16 cwmin; 1315 u16 cwmax; 1316 u8 aifs; 1317 }; 1318 1319 /** 1320 * DOC: Scanning and BSS list handling 1321 * 1322 * The scanning process itself is fairly simple, but cfg80211 offers quite 1323 * a bit of helper functionality. To start a scan, the scan operation will 1324 * be invoked with a scan definition. This scan definition contains the 1325 * channels to scan, and the SSIDs to send probe requests for (including the 1326 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 1327 * probe. Additionally, a scan request may contain extra information elements 1328 * that should be added to the probe request. The IEs are guaranteed to be 1329 * well-formed, and will not exceed the maximum length the driver advertised 1330 * in the wiphy structure. 1331 * 1332 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 1333 * it is responsible for maintaining the BSS list; the driver should not 1334 * maintain a list itself. For this notification, various functions exist. 1335 * 1336 * Since drivers do not maintain a BSS list, there are also a number of 1337 * functions to search for a BSS and obtain information about it from the 1338 * BSS structure cfg80211 maintains. The BSS list is also made available 1339 * to userspace. 1340 */ 1341 1342 /** 1343 * struct cfg80211_ssid - SSID description 1344 * @ssid: the SSID 1345 * @ssid_len: length of the ssid 1346 */ 1347 struct cfg80211_ssid { 1348 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1349 u8 ssid_len; 1350 }; 1351 1352 /** 1353 * struct cfg80211_scan_request - scan request description 1354 * 1355 * @ssids: SSIDs to scan for (active scan only) 1356 * @n_ssids: number of SSIDs 1357 * @channels: channels to scan on. 1358 * @n_channels: total number of channels to scan 1359 * @scan_width: channel width for scanning 1360 * @ie: optional information element(s) to add into Probe Request or %NULL 1361 * @ie_len: length of ie in octets 1362 * @flags: bit field of flags controlling operation 1363 * @rates: bitmap of rates to advertise for each band 1364 * @wiphy: the wiphy this was for 1365 * @scan_start: time (in jiffies) when the scan started 1366 * @wdev: the wireless device to scan for 1367 * @aborted: (internal) scan request was notified as aborted 1368 * @notified: (internal) scan request was notified as done or aborted 1369 * @no_cck: used to send probe requests at non CCK rate in 2GHz band 1370 */ 1371 struct cfg80211_scan_request { 1372 struct cfg80211_ssid *ssids; 1373 int n_ssids; 1374 u32 n_channels; 1375 enum nl80211_bss_scan_width scan_width; 1376 const u8 *ie; 1377 size_t ie_len; 1378 u32 flags; 1379 1380 u32 rates[IEEE80211_NUM_BANDS]; 1381 1382 struct wireless_dev *wdev; 1383 1384 /* internal */ 1385 struct wiphy *wiphy; 1386 unsigned long scan_start; 1387 bool aborted, notified; 1388 bool no_cck; 1389 1390 /* keep last */ 1391 struct ieee80211_channel *channels[0]; 1392 }; 1393 1394 /** 1395 * struct cfg80211_match_set - sets of attributes to match 1396 * 1397 * @ssid: SSID to be matched 1398 */ 1399 struct cfg80211_match_set { 1400 struct cfg80211_ssid ssid; 1401 }; 1402 1403 /** 1404 * struct cfg80211_sched_scan_request - scheduled scan request description 1405 * 1406 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 1407 * @n_ssids: number of SSIDs 1408 * @n_channels: total number of channels to scan 1409 * @scan_width: channel width for scanning 1410 * @interval: interval between each scheduled scan cycle 1411 * @ie: optional information element(s) to add into Probe Request or %NULL 1412 * @ie_len: length of ie in octets 1413 * @flags: bit field of flags controlling operation 1414 * @match_sets: sets of parameters to be matched for a scan result 1415 * entry to be considered valid and to be passed to the host 1416 * (others are filtered out). 1417 * If ommited, all results are passed. 1418 * @n_match_sets: number of match sets 1419 * @wiphy: the wiphy this was for 1420 * @dev: the interface 1421 * @scan_start: start time of the scheduled scan 1422 * @channels: channels to scan 1423 * @rssi_thold: don't report scan results below this threshold (in s32 dBm) 1424 */ 1425 struct cfg80211_sched_scan_request { 1426 struct cfg80211_ssid *ssids; 1427 int n_ssids; 1428 u32 n_channels; 1429 enum nl80211_bss_scan_width scan_width; 1430 u32 interval; 1431 const u8 *ie; 1432 size_t ie_len; 1433 u32 flags; 1434 struct cfg80211_match_set *match_sets; 1435 int n_match_sets; 1436 s32 rssi_thold; 1437 1438 /* internal */ 1439 struct wiphy *wiphy; 1440 struct net_device *dev; 1441 unsigned long scan_start; 1442 1443 /* keep last */ 1444 struct ieee80211_channel *channels[0]; 1445 }; 1446 1447 /** 1448 * enum cfg80211_signal_type - signal type 1449 * 1450 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 1451 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 1452 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 1453 */ 1454 enum cfg80211_signal_type { 1455 CFG80211_SIGNAL_TYPE_NONE, 1456 CFG80211_SIGNAL_TYPE_MBM, 1457 CFG80211_SIGNAL_TYPE_UNSPEC, 1458 }; 1459 1460 /** 1461 * struct cfg80211_bss_ie_data - BSS entry IE data 1462 * @tsf: TSF contained in the frame that carried these IEs 1463 * @rcu_head: internal use, for freeing 1464 * @len: length of the IEs 1465 * @data: IE data 1466 */ 1467 struct cfg80211_bss_ies { 1468 u64 tsf; 1469 struct rcu_head rcu_head; 1470 int len; 1471 u8 data[]; 1472 }; 1473 1474 /** 1475 * struct cfg80211_bss - BSS description 1476 * 1477 * This structure describes a BSS (which may also be a mesh network) 1478 * for use in scan results and similar. 1479 * 1480 * @channel: channel this BSS is on 1481 * @scan_width: width of the control channel 1482 * @bssid: BSSID of the BSS 1483 * @beacon_interval: the beacon interval as from the frame 1484 * @capability: the capability field in host byte order 1485 * @ies: the information elements (Note that there is no guarantee that these 1486 * are well-formed!); this is a pointer to either the beacon_ies or 1487 * proberesp_ies depending on whether Probe Response frame has been 1488 * received. It is always non-%NULL. 1489 * @beacon_ies: the information elements from the last Beacon frame 1490 * (implementation note: if @hidden_beacon_bss is set this struct doesn't 1491 * own the beacon_ies, but they're just pointers to the ones from the 1492 * @hidden_beacon_bss struct) 1493 * @proberesp_ies: the information elements from the last Probe Response frame 1494 * @hidden_beacon_bss: in case this BSS struct represents a probe response from 1495 * a BSS that hides the SSID in its beacon, this points to the BSS struct 1496 * that holds the beacon data. @beacon_ies is still valid, of course, and 1497 * points to the same data as hidden_beacon_bss->beacon_ies in that case. 1498 * @signal: signal strength value (type depends on the wiphy's signal_type) 1499 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 1500 */ 1501 struct cfg80211_bss { 1502 struct ieee80211_channel *channel; 1503 enum nl80211_bss_scan_width scan_width; 1504 1505 const struct cfg80211_bss_ies __rcu *ies; 1506 const struct cfg80211_bss_ies __rcu *beacon_ies; 1507 const struct cfg80211_bss_ies __rcu *proberesp_ies; 1508 1509 struct cfg80211_bss *hidden_beacon_bss; 1510 1511 s32 signal; 1512 1513 u16 beacon_interval; 1514 u16 capability; 1515 1516 u8 bssid[ETH_ALEN]; 1517 1518 u8 priv[0] __aligned(sizeof(void *)); 1519 }; 1520 1521 /** 1522 * ieee80211_bss_get_ie - find IE with given ID 1523 * @bss: the bss to search 1524 * @ie: the IE ID 1525 * 1526 * Note that the return value is an RCU-protected pointer, so 1527 * rcu_read_lock() must be held when calling this function. 1528 * Return: %NULL if not found. 1529 */ 1530 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 1531 1532 1533 /** 1534 * struct cfg80211_auth_request - Authentication request data 1535 * 1536 * This structure provides information needed to complete IEEE 802.11 1537 * authentication. 1538 * 1539 * @bss: The BSS to authenticate with, the callee must obtain a reference 1540 * to it if it needs to keep it. 1541 * @auth_type: Authentication type (algorithm) 1542 * @ie: Extra IEs to add to Authentication frame or %NULL 1543 * @ie_len: Length of ie buffer in octets 1544 * @key_len: length of WEP key for shared key authentication 1545 * @key_idx: index of WEP key for shared key authentication 1546 * @key: WEP key for shared key authentication 1547 * @sae_data: Non-IE data to use with SAE or %NULL. This starts with 1548 * Authentication transaction sequence number field. 1549 * @sae_data_len: Length of sae_data buffer in octets 1550 */ 1551 struct cfg80211_auth_request { 1552 struct cfg80211_bss *bss; 1553 const u8 *ie; 1554 size_t ie_len; 1555 enum nl80211_auth_type auth_type; 1556 const u8 *key; 1557 u8 key_len, key_idx; 1558 const u8 *sae_data; 1559 size_t sae_data_len; 1560 }; 1561 1562 /** 1563 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association. 1564 * 1565 * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n) 1566 * @ASSOC_REQ_DISABLE_VHT: Disable VHT 1567 */ 1568 enum cfg80211_assoc_req_flags { 1569 ASSOC_REQ_DISABLE_HT = BIT(0), 1570 ASSOC_REQ_DISABLE_VHT = BIT(1), 1571 }; 1572 1573 /** 1574 * struct cfg80211_assoc_request - (Re)Association request data 1575 * 1576 * This structure provides information needed to complete IEEE 802.11 1577 * (re)association. 1578 * @bss: The BSS to associate with. If the call is successful the driver is 1579 * given a reference that it must give back to cfg80211_send_rx_assoc() 1580 * or to cfg80211_assoc_timeout(). To ensure proper refcounting, new 1581 * association requests while already associating must be rejected. 1582 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 1583 * @ie_len: Length of ie buffer in octets 1584 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 1585 * @crypto: crypto settings 1586 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 1587 * @flags: See &enum cfg80211_assoc_req_flags 1588 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1589 * will be used in ht_capa. Un-supported values will be ignored. 1590 * @ht_capa_mask: The bits of ht_capa which are to be used. 1591 * @vht_capa: VHT capability override 1592 * @vht_capa_mask: VHT capability mask indicating which fields to use 1593 */ 1594 struct cfg80211_assoc_request { 1595 struct cfg80211_bss *bss; 1596 const u8 *ie, *prev_bssid; 1597 size_t ie_len; 1598 struct cfg80211_crypto_settings crypto; 1599 bool use_mfp; 1600 u32 flags; 1601 struct ieee80211_ht_cap ht_capa; 1602 struct ieee80211_ht_cap ht_capa_mask; 1603 struct ieee80211_vht_cap vht_capa, vht_capa_mask; 1604 }; 1605 1606 /** 1607 * struct cfg80211_deauth_request - Deauthentication request data 1608 * 1609 * This structure provides information needed to complete IEEE 802.11 1610 * deauthentication. 1611 * 1612 * @bssid: the BSSID of the BSS to deauthenticate from 1613 * @ie: Extra IEs to add to Deauthentication frame or %NULL 1614 * @ie_len: Length of ie buffer in octets 1615 * @reason_code: The reason code for the deauthentication 1616 * @local_state_change: if set, change local state only and 1617 * do not set a deauth frame 1618 */ 1619 struct cfg80211_deauth_request { 1620 const u8 *bssid; 1621 const u8 *ie; 1622 size_t ie_len; 1623 u16 reason_code; 1624 bool local_state_change; 1625 }; 1626 1627 /** 1628 * struct cfg80211_disassoc_request - Disassociation request data 1629 * 1630 * This structure provides information needed to complete IEEE 802.11 1631 * disassocation. 1632 * 1633 * @bss: the BSS to disassociate from 1634 * @ie: Extra IEs to add to Disassociation frame or %NULL 1635 * @ie_len: Length of ie buffer in octets 1636 * @reason_code: The reason code for the disassociation 1637 * @local_state_change: This is a request for a local state only, i.e., no 1638 * Disassociation frame is to be transmitted. 1639 */ 1640 struct cfg80211_disassoc_request { 1641 struct cfg80211_bss *bss; 1642 const u8 *ie; 1643 size_t ie_len; 1644 u16 reason_code; 1645 bool local_state_change; 1646 }; 1647 1648 /** 1649 * struct cfg80211_ibss_params - IBSS parameters 1650 * 1651 * This structure defines the IBSS parameters for the join_ibss() 1652 * method. 1653 * 1654 * @ssid: The SSID, will always be non-null. 1655 * @ssid_len: The length of the SSID, will always be non-zero. 1656 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1657 * search for IBSSs with a different BSSID. 1658 * @chandef: defines the channel to use if no other IBSS to join can be found 1659 * @channel_fixed: The channel should be fixed -- do not search for 1660 * IBSSs to join on other channels. 1661 * @ie: information element(s) to include in the beacon 1662 * @ie_len: length of that 1663 * @beacon_interval: beacon interval to use 1664 * @privacy: this is a protected network, keys will be configured 1665 * after joining 1666 * @control_port: whether user space controls IEEE 802.1X port, i.e., 1667 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 1668 * required to assume that the port is unauthorized until authorized by 1669 * user space. Otherwise, port is marked authorized by default. 1670 * @userspace_handles_dfs: whether user space controls DFS operation, i.e. 1671 * changes the channel when a radar is detected. This is required 1672 * to operate on DFS channels. 1673 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1674 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1675 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1676 * will be used in ht_capa. Un-supported values will be ignored. 1677 * @ht_capa_mask: The bits of ht_capa which are to be used. 1678 */ 1679 struct cfg80211_ibss_params { 1680 u8 *ssid; 1681 u8 *bssid; 1682 struct cfg80211_chan_def chandef; 1683 u8 *ie; 1684 u8 ssid_len, ie_len; 1685 u16 beacon_interval; 1686 u32 basic_rates; 1687 bool channel_fixed; 1688 bool privacy; 1689 bool control_port; 1690 bool userspace_handles_dfs; 1691 int mcast_rate[IEEE80211_NUM_BANDS]; 1692 struct ieee80211_ht_cap ht_capa; 1693 struct ieee80211_ht_cap ht_capa_mask; 1694 }; 1695 1696 /** 1697 * struct cfg80211_connect_params - Connection parameters 1698 * 1699 * This structure provides information needed to complete IEEE 802.11 1700 * authentication and association. 1701 * 1702 * @channel: The channel to use or %NULL if not specified (auto-select based 1703 * on scan results) 1704 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1705 * results) 1706 * @ssid: SSID 1707 * @ssid_len: Length of ssid in octets 1708 * @auth_type: Authentication type (algorithm) 1709 * @ie: IEs for association request 1710 * @ie_len: Length of assoc_ie in octets 1711 * @privacy: indicates whether privacy-enabled APs should be used 1712 * @mfp: indicate whether management frame protection is used 1713 * @crypto: crypto settings 1714 * @key_len: length of WEP key for shared key authentication 1715 * @key_idx: index of WEP key for shared key authentication 1716 * @key: WEP key for shared key authentication 1717 * @flags: See &enum cfg80211_assoc_req_flags 1718 * @bg_scan_period: Background scan period in seconds 1719 * or -1 to indicate that default value is to be used. 1720 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1721 * will be used in ht_capa. Un-supported values will be ignored. 1722 * @ht_capa_mask: The bits of ht_capa which are to be used. 1723 * @vht_capa: VHT Capability overrides 1724 * @vht_capa_mask: The bits of vht_capa which are to be used. 1725 */ 1726 struct cfg80211_connect_params { 1727 struct ieee80211_channel *channel; 1728 u8 *bssid; 1729 u8 *ssid; 1730 size_t ssid_len; 1731 enum nl80211_auth_type auth_type; 1732 u8 *ie; 1733 size_t ie_len; 1734 bool privacy; 1735 enum nl80211_mfp mfp; 1736 struct cfg80211_crypto_settings crypto; 1737 const u8 *key; 1738 u8 key_len, key_idx; 1739 u32 flags; 1740 int bg_scan_period; 1741 struct ieee80211_ht_cap ht_capa; 1742 struct ieee80211_ht_cap ht_capa_mask; 1743 struct ieee80211_vht_cap vht_capa; 1744 struct ieee80211_vht_cap vht_capa_mask; 1745 }; 1746 1747 /** 1748 * enum wiphy_params_flags - set_wiphy_params bitfield values 1749 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1750 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1751 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1752 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1753 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1754 */ 1755 enum wiphy_params_flags { 1756 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1757 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1758 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1759 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1760 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1761 }; 1762 1763 /* 1764 * cfg80211_bitrate_mask - masks for bitrate control 1765 */ 1766 struct cfg80211_bitrate_mask { 1767 struct { 1768 u32 legacy; 1769 u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN]; 1770 u16 vht_mcs[NL80211_VHT_NSS_MAX]; 1771 } control[IEEE80211_NUM_BANDS]; 1772 }; 1773 /** 1774 * struct cfg80211_pmksa - PMK Security Association 1775 * 1776 * This structure is passed to the set/del_pmksa() method for PMKSA 1777 * caching. 1778 * 1779 * @bssid: The AP's BSSID. 1780 * @pmkid: The PMK material itself. 1781 */ 1782 struct cfg80211_pmksa { 1783 u8 *bssid; 1784 u8 *pmkid; 1785 }; 1786 1787 /** 1788 * struct cfg80211_pkt_pattern - packet pattern 1789 * @mask: bitmask where to match pattern and where to ignore bytes, 1790 * one bit per byte, in same format as nl80211 1791 * @pattern: bytes to match where bitmask is 1 1792 * @pattern_len: length of pattern (in bytes) 1793 * @pkt_offset: packet offset (in bytes) 1794 * 1795 * Internal note: @mask and @pattern are allocated in one chunk of 1796 * memory, free @mask only! 1797 */ 1798 struct cfg80211_pkt_pattern { 1799 u8 *mask, *pattern; 1800 int pattern_len; 1801 int pkt_offset; 1802 }; 1803 1804 /** 1805 * struct cfg80211_wowlan_tcp - TCP connection parameters 1806 * 1807 * @sock: (internal) socket for source port allocation 1808 * @src: source IP address 1809 * @dst: destination IP address 1810 * @dst_mac: destination MAC address 1811 * @src_port: source port 1812 * @dst_port: destination port 1813 * @payload_len: data payload length 1814 * @payload: data payload buffer 1815 * @payload_seq: payload sequence stamping configuration 1816 * @data_interval: interval at which to send data packets 1817 * @wake_len: wakeup payload match length 1818 * @wake_data: wakeup payload match data 1819 * @wake_mask: wakeup payload match mask 1820 * @tokens_size: length of the tokens buffer 1821 * @payload_tok: payload token usage configuration 1822 */ 1823 struct cfg80211_wowlan_tcp { 1824 struct socket *sock; 1825 __be32 src, dst; 1826 u16 src_port, dst_port; 1827 u8 dst_mac[ETH_ALEN]; 1828 int payload_len; 1829 const u8 *payload; 1830 struct nl80211_wowlan_tcp_data_seq payload_seq; 1831 u32 data_interval; 1832 u32 wake_len; 1833 const u8 *wake_data, *wake_mask; 1834 u32 tokens_size; 1835 /* must be last, variable member */ 1836 struct nl80211_wowlan_tcp_data_token payload_tok; 1837 }; 1838 1839 /** 1840 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 1841 * 1842 * This structure defines the enabled WoWLAN triggers for the device. 1843 * @any: wake up on any activity -- special trigger if device continues 1844 * operating as normal during suspend 1845 * @disconnect: wake up if getting disconnected 1846 * @magic_pkt: wake up on receiving magic packet 1847 * @patterns: wake up on receiving packet matching a pattern 1848 * @n_patterns: number of patterns 1849 * @gtk_rekey_failure: wake up on GTK rekey failure 1850 * @eap_identity_req: wake up on EAP identity request packet 1851 * @four_way_handshake: wake up on 4-way handshake 1852 * @rfkill_release: wake up when rfkill is released 1853 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h. 1854 * NULL if not configured. 1855 */ 1856 struct cfg80211_wowlan { 1857 bool any, disconnect, magic_pkt, gtk_rekey_failure, 1858 eap_identity_req, four_way_handshake, 1859 rfkill_release; 1860 struct cfg80211_pkt_pattern *patterns; 1861 struct cfg80211_wowlan_tcp *tcp; 1862 int n_patterns; 1863 }; 1864 1865 /** 1866 * struct cfg80211_coalesce_rules - Coalesce rule parameters 1867 * 1868 * This structure defines coalesce rule for the device. 1869 * @delay: maximum coalescing delay in msecs. 1870 * @condition: condition for packet coalescence. 1871 * see &enum nl80211_coalesce_condition. 1872 * @patterns: array of packet patterns 1873 * @n_patterns: number of patterns 1874 */ 1875 struct cfg80211_coalesce_rules { 1876 int delay; 1877 enum nl80211_coalesce_condition condition; 1878 struct cfg80211_pkt_pattern *patterns; 1879 int n_patterns; 1880 }; 1881 1882 /** 1883 * struct cfg80211_coalesce - Packet coalescing settings 1884 * 1885 * This structure defines coalescing settings. 1886 * @rules: array of coalesce rules 1887 * @n_rules: number of rules 1888 */ 1889 struct cfg80211_coalesce { 1890 struct cfg80211_coalesce_rules *rules; 1891 int n_rules; 1892 }; 1893 1894 /** 1895 * struct cfg80211_wowlan_wakeup - wakeup report 1896 * @disconnect: woke up by getting disconnected 1897 * @magic_pkt: woke up by receiving magic packet 1898 * @gtk_rekey_failure: woke up by GTK rekey failure 1899 * @eap_identity_req: woke up by EAP identity request packet 1900 * @four_way_handshake: woke up by 4-way handshake 1901 * @rfkill_release: woke up by rfkill being released 1902 * @pattern_idx: pattern that caused wakeup, -1 if not due to pattern 1903 * @packet_present_len: copied wakeup packet data 1904 * @packet_len: original wakeup packet length 1905 * @packet: The packet causing the wakeup, if any. 1906 * @packet_80211: For pattern match, magic packet and other data 1907 * frame triggers an 802.3 frame should be reported, for 1908 * disconnect due to deauth 802.11 frame. This indicates which 1909 * it is. 1910 * @tcp_match: TCP wakeup packet received 1911 * @tcp_connlost: TCP connection lost or failed to establish 1912 * @tcp_nomoretokens: TCP data ran out of tokens 1913 */ 1914 struct cfg80211_wowlan_wakeup { 1915 bool disconnect, magic_pkt, gtk_rekey_failure, 1916 eap_identity_req, four_way_handshake, 1917 rfkill_release, packet_80211, 1918 tcp_match, tcp_connlost, tcp_nomoretokens; 1919 s32 pattern_idx; 1920 u32 packet_present_len, packet_len; 1921 const void *packet; 1922 }; 1923 1924 /** 1925 * struct cfg80211_gtk_rekey_data - rekey data 1926 * @kek: key encryption key 1927 * @kck: key confirmation key 1928 * @replay_ctr: replay counter 1929 */ 1930 struct cfg80211_gtk_rekey_data { 1931 u8 kek[NL80211_KEK_LEN]; 1932 u8 kck[NL80211_KCK_LEN]; 1933 u8 replay_ctr[NL80211_REPLAY_CTR_LEN]; 1934 }; 1935 1936 /** 1937 * struct cfg80211_update_ft_ies_params - FT IE Information 1938 * 1939 * This structure provides information needed to update the fast transition IE 1940 * 1941 * @md: The Mobility Domain ID, 2 Octet value 1942 * @ie: Fast Transition IEs 1943 * @ie_len: Length of ft_ie in octets 1944 */ 1945 struct cfg80211_update_ft_ies_params { 1946 u16 md; 1947 const u8 *ie; 1948 size_t ie_len; 1949 }; 1950 1951 /** 1952 * struct cfg80211_mgmt_tx_params - mgmt tx parameters 1953 * 1954 * This structure provides information needed to transmit a mgmt frame 1955 * 1956 * @chan: channel to use 1957 * @offchan: indicates wether off channel operation is required 1958 * @wait: duration for ROC 1959 * @buf: buffer to transmit 1960 * @len: buffer length 1961 * @no_cck: don't use cck rates for this frame 1962 * @dont_wait_for_ack: tells the low level not to wait for an ack 1963 */ 1964 struct cfg80211_mgmt_tx_params { 1965 struct ieee80211_channel *chan; 1966 bool offchan; 1967 unsigned int wait; 1968 const u8 *buf; 1969 size_t len; 1970 bool no_cck; 1971 bool dont_wait_for_ack; 1972 }; 1973 1974 /** 1975 * struct cfg80211_dscp_exception - DSCP exception 1976 * 1977 * @dscp: DSCP value that does not adhere to the user priority range definition 1978 * @up: user priority value to which the corresponding DSCP value belongs 1979 */ 1980 struct cfg80211_dscp_exception { 1981 u8 dscp; 1982 u8 up; 1983 }; 1984 1985 /** 1986 * struct cfg80211_dscp_range - DSCP range definition for user priority 1987 * 1988 * @low: lowest DSCP value of this user priority range, inclusive 1989 * @high: highest DSCP value of this user priority range, inclusive 1990 */ 1991 struct cfg80211_dscp_range { 1992 u8 low; 1993 u8 high; 1994 }; 1995 1996 /* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */ 1997 #define IEEE80211_QOS_MAP_MAX_EX 21 1998 #define IEEE80211_QOS_MAP_LEN_MIN 16 1999 #define IEEE80211_QOS_MAP_LEN_MAX \ 2000 (IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX) 2001 2002 /** 2003 * struct cfg80211_qos_map - QoS Map Information 2004 * 2005 * This struct defines the Interworking QoS map setting for DSCP values 2006 * 2007 * @num_des: number of DSCP exceptions (0..21) 2008 * @dscp_exception: optionally up to maximum of 21 DSCP exceptions from 2009 * the user priority DSCP range definition 2010 * @up: DSCP range definition for a particular user priority 2011 */ 2012 struct cfg80211_qos_map { 2013 u8 num_des; 2014 struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX]; 2015 struct cfg80211_dscp_range up[8]; 2016 }; 2017 2018 /** 2019 * struct cfg80211_ops - backend description for wireless configuration 2020 * 2021 * This struct is registered by fullmac card drivers and/or wireless stacks 2022 * in order to handle configuration requests on their interfaces. 2023 * 2024 * All callbacks except where otherwise noted should return 0 2025 * on success or a negative error code. 2026 * 2027 * All operations are currently invoked under rtnl for consistency with the 2028 * wireless extensions but this is subject to reevaluation as soon as this 2029 * code is used more widely and we have a first user without wext. 2030 * 2031 * @suspend: wiphy device needs to be suspended. The variable @wow will 2032 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 2033 * configured for the device. 2034 * @resume: wiphy device needs to be resumed 2035 * @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback 2036 * to call device_set_wakeup_enable() to enable/disable wakeup from 2037 * the device. 2038 * 2039 * @add_virtual_intf: create a new virtual interface with the given name, 2040 * must set the struct wireless_dev's iftype. Beware: You must create 2041 * the new netdev in the wiphy's network namespace! Returns the struct 2042 * wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must 2043 * also set the address member in the wdev. 2044 * 2045 * @del_virtual_intf: remove the virtual interface 2046 * 2047 * @change_virtual_intf: change type/configuration of virtual interface, 2048 * keep the struct wireless_dev's iftype updated. 2049 * 2050 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 2051 * when adding a group key. 2052 * 2053 * @get_key: get information about the key with the given parameters. 2054 * @mac_addr will be %NULL when requesting information for a group 2055 * key. All pointers given to the @callback function need not be valid 2056 * after it returns. This function should return an error if it is 2057 * not possible to retrieve the key, -ENOENT if it doesn't exist. 2058 * 2059 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 2060 * and @key_index, return -ENOENT if the key doesn't exist. 2061 * 2062 * @set_default_key: set the default key on an interface 2063 * 2064 * @set_default_mgmt_key: set the default management frame key on an interface 2065 * 2066 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 2067 * 2068 * @start_ap: Start acting in AP mode defined by the parameters. 2069 * @change_beacon: Change the beacon parameters for an access point mode 2070 * interface. This should reject the call when AP mode wasn't started. 2071 * @stop_ap: Stop being an AP, including stopping beaconing. 2072 * 2073 * @add_station: Add a new station. 2074 * @del_station: Remove a station; @mac may be NULL to remove all stations. 2075 * @change_station: Modify a given station. Note that flags changes are not much 2076 * validated in cfg80211, in particular the auth/assoc/authorized flags 2077 * might come to the driver in invalid combinations -- make sure to check 2078 * them, also against the existing state! Drivers must call 2079 * cfg80211_check_station_change() to validate the information. 2080 * @get_station: get station information for the station identified by @mac 2081 * @dump_station: dump station callback -- resume dump at index @idx 2082 * 2083 * @add_mpath: add a fixed mesh path 2084 * @del_mpath: delete a given mesh path 2085 * @change_mpath: change a given mesh path 2086 * @get_mpath: get a mesh path for the given parameters 2087 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 2088 * @join_mesh: join the mesh network with the specified parameters 2089 * (invoked with the wireless_dev mutex held) 2090 * @leave_mesh: leave the current mesh network 2091 * (invoked with the wireless_dev mutex held) 2092 * 2093 * @get_mesh_config: Get the current mesh configuration 2094 * 2095 * @update_mesh_config: Update mesh parameters on a running mesh. 2096 * The mask is a bitfield which tells us which parameters to 2097 * set, and which to leave alone. 2098 * 2099 * @change_bss: Modify parameters for a given BSS. 2100 * 2101 * @set_txq_params: Set TX queue parameters 2102 * 2103 * @libertas_set_mesh_channel: Only for backward compatibility for libertas, 2104 * as it doesn't implement join_mesh and needs to set the channel to 2105 * join the mesh instead. 2106 * 2107 * @set_monitor_channel: Set the monitor mode channel for the device. If other 2108 * interfaces are active this callback should reject the configuration. 2109 * If no interfaces are active or the device is down, the channel should 2110 * be stored for when a monitor interface becomes active. 2111 * 2112 * @scan: Request to do a scan. If returning zero, the scan request is given 2113 * the driver, and will be valid until passed to cfg80211_scan_done(). 2114 * For scan results, call cfg80211_inform_bss(); you can call this outside 2115 * the scan/scan_done bracket too. 2116 * 2117 * @auth: Request to authenticate with the specified peer 2118 * (invoked with the wireless_dev mutex held) 2119 * @assoc: Request to (re)associate with the specified peer 2120 * (invoked with the wireless_dev mutex held) 2121 * @deauth: Request to deauthenticate from the specified peer 2122 * (invoked with the wireless_dev mutex held) 2123 * @disassoc: Request to disassociate from the specified peer 2124 * (invoked with the wireless_dev mutex held) 2125 * 2126 * @connect: Connect to the ESS with the specified parameters. When connected, 2127 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 2128 * If the connection fails for some reason, call cfg80211_connect_result() 2129 * with the status from the AP. 2130 * (invoked with the wireless_dev mutex held) 2131 * @disconnect: Disconnect from the BSS/ESS. 2132 * (invoked with the wireless_dev mutex held) 2133 * 2134 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 2135 * cfg80211_ibss_joined(), also call that function when changing BSSID due 2136 * to a merge. 2137 * (invoked with the wireless_dev mutex held) 2138 * @leave_ibss: Leave the IBSS. 2139 * (invoked with the wireless_dev mutex held) 2140 * 2141 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or 2142 * MESH mode) 2143 * 2144 * @set_wiphy_params: Notify that wiphy parameters have changed; 2145 * @changed bitfield (see &enum wiphy_params_flags) describes which values 2146 * have changed. The actual parameter values are available in 2147 * struct wiphy. If returning an error, no value should be changed. 2148 * 2149 * @set_tx_power: set the transmit power according to the parameters, 2150 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). The 2151 * wdev may be %NULL if power was set for the wiphy, and will 2152 * always be %NULL unless the driver supports per-vif TX power 2153 * (as advertised by the nl80211 feature flag.) 2154 * @get_tx_power: store the current TX power into the dbm variable; 2155 * return 0 if successful 2156 * 2157 * @set_wds_peer: set the WDS peer for a WDS interface 2158 * 2159 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 2160 * functions to adjust rfkill hw state 2161 * 2162 * @dump_survey: get site survey information. 2163 * 2164 * @remain_on_channel: Request the driver to remain awake on the specified 2165 * channel for the specified duration to complete an off-channel 2166 * operation (e.g., public action frame exchange). When the driver is 2167 * ready on the requested channel, it must indicate this with an event 2168 * notification by calling cfg80211_ready_on_channel(). 2169 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 2170 * This allows the operation to be terminated prior to timeout based on 2171 * the duration value. 2172 * @mgmt_tx: Transmit a management frame. 2173 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 2174 * frame on another channel 2175 * 2176 * @testmode_cmd: run a test mode command; @wdev may be %NULL 2177 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 2178 * used by the function, but 0 and 1 must not be touched. Additionally, 2179 * return error codes other than -ENOBUFS and -ENOENT will terminate the 2180 * dump and return to userspace with an error, so be careful. If any data 2181 * was passed in from userspace then the data/len arguments will be present 2182 * and point to the data contained in %NL80211_ATTR_TESTDATA. 2183 * 2184 * @set_bitrate_mask: set the bitrate mask configuration 2185 * 2186 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 2187 * devices running firmwares capable of generating the (re) association 2188 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 2189 * @del_pmksa: Delete a cached PMKID. 2190 * @flush_pmksa: Flush all cached PMKIDs. 2191 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 2192 * allows the driver to adjust the dynamic ps timeout value. 2193 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 2194 * @set_cqm_txe_config: Configure connection quality monitor TX error 2195 * thresholds. 2196 * @sched_scan_start: Tell the driver to start a scheduled scan. 2197 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. 2198 * 2199 * @mgmt_frame_register: Notify driver that a management frame type was 2200 * registered. Note that this callback may not sleep, and cannot run 2201 * concurrently with itself. 2202 * 2203 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2204 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2205 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2206 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2207 * 2208 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2209 * 2210 * @set_ringparam: Set tx and rx ring sizes. 2211 * 2212 * @get_ringparam: Get tx and rx ring current and maximum sizes. 2213 * 2214 * @tdls_mgmt: Transmit a TDLS management frame. 2215 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 2216 * 2217 * @probe_client: probe an associated client, must return a cookie that it 2218 * later passes to cfg80211_probe_status(). 2219 * 2220 * @set_noack_map: Set the NoAck Map for the TIDs. 2221 * 2222 * @get_et_sset_count: Ethtool API to get string-set count. 2223 * See @ethtool_ops.get_sset_count 2224 * 2225 * @get_et_stats: Ethtool API to get a set of u64 stats. 2226 * See @ethtool_ops.get_ethtool_stats 2227 * 2228 * @get_et_strings: Ethtool API to get a set of strings to describe stats 2229 * and perhaps other supported types of ethtool data-sets. 2230 * See @ethtool_ops.get_strings 2231 * 2232 * @get_channel: Get the current operating channel for the virtual interface. 2233 * For monitor interfaces, it should return %NULL unless there's a single 2234 * current monitoring channel. 2235 * 2236 * @start_p2p_device: Start the given P2P device. 2237 * @stop_p2p_device: Stop the given P2P device. 2238 * 2239 * @set_mac_acl: Sets MAC address control list in AP and P2P GO mode. 2240 * Parameters include ACL policy, an array of MAC address of stations 2241 * and the number of MAC addresses. If there is already a list in driver 2242 * this new list replaces the existing one. Driver has to clear its ACL 2243 * when number of MAC addresses entries is passed as 0. Drivers which 2244 * advertise the support for MAC based ACL have to implement this callback. 2245 * 2246 * @start_radar_detection: Start radar detection in the driver. 2247 * 2248 * @update_ft_ies: Provide updated Fast BSS Transition information to the 2249 * driver. If the SME is in the driver/firmware, this information can be 2250 * used in building Authentication and Reassociation Request frames. 2251 * 2252 * @crit_proto_start: Indicates a critical protocol needs more link reliability 2253 * for a given duration (milliseconds). The protocol is provided so the 2254 * driver can take the most appropriate actions. 2255 * @crit_proto_stop: Indicates critical protocol no longer needs increased link 2256 * reliability. This operation can not fail. 2257 * @set_coalesce: Set coalesce parameters. 2258 * 2259 * @channel_switch: initiate channel-switch procedure (with CSA) 2260 * 2261 * @set_qos_map: Set QoS mapping information to the driver 2262 */ 2263 struct cfg80211_ops { 2264 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 2265 int (*resume)(struct wiphy *wiphy); 2266 void (*set_wakeup)(struct wiphy *wiphy, bool enabled); 2267 2268 struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy, 2269 const char *name, 2270 enum nl80211_iftype type, 2271 u32 *flags, 2272 struct vif_params *params); 2273 int (*del_virtual_intf)(struct wiphy *wiphy, 2274 struct wireless_dev *wdev); 2275 int (*change_virtual_intf)(struct wiphy *wiphy, 2276 struct net_device *dev, 2277 enum nl80211_iftype type, u32 *flags, 2278 struct vif_params *params); 2279 2280 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 2281 u8 key_index, bool pairwise, const u8 *mac_addr, 2282 struct key_params *params); 2283 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 2284 u8 key_index, bool pairwise, const u8 *mac_addr, 2285 void *cookie, 2286 void (*callback)(void *cookie, struct key_params*)); 2287 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 2288 u8 key_index, bool pairwise, const u8 *mac_addr); 2289 int (*set_default_key)(struct wiphy *wiphy, 2290 struct net_device *netdev, 2291 u8 key_index, bool unicast, bool multicast); 2292 int (*set_default_mgmt_key)(struct wiphy *wiphy, 2293 struct net_device *netdev, 2294 u8 key_index); 2295 2296 int (*start_ap)(struct wiphy *wiphy, struct net_device *dev, 2297 struct cfg80211_ap_settings *settings); 2298 int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev, 2299 struct cfg80211_beacon_data *info); 2300 int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev); 2301 2302 2303 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 2304 u8 *mac, struct station_parameters *params); 2305 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 2306 u8 *mac); 2307 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 2308 u8 *mac, struct station_parameters *params); 2309 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 2310 u8 *mac, struct station_info *sinfo); 2311 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 2312 int idx, u8 *mac, struct station_info *sinfo); 2313 2314 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 2315 u8 *dst, u8 *next_hop); 2316 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 2317 u8 *dst); 2318 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 2319 u8 *dst, u8 *next_hop); 2320 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 2321 u8 *dst, u8 *next_hop, 2322 struct mpath_info *pinfo); 2323 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 2324 int idx, u8 *dst, u8 *next_hop, 2325 struct mpath_info *pinfo); 2326 int (*get_mesh_config)(struct wiphy *wiphy, 2327 struct net_device *dev, 2328 struct mesh_config *conf); 2329 int (*update_mesh_config)(struct wiphy *wiphy, 2330 struct net_device *dev, u32 mask, 2331 const struct mesh_config *nconf); 2332 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 2333 const struct mesh_config *conf, 2334 const struct mesh_setup *setup); 2335 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 2336 2337 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 2338 struct bss_parameters *params); 2339 2340 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 2341 struct ieee80211_txq_params *params); 2342 2343 int (*libertas_set_mesh_channel)(struct wiphy *wiphy, 2344 struct net_device *dev, 2345 struct ieee80211_channel *chan); 2346 2347 int (*set_monitor_channel)(struct wiphy *wiphy, 2348 struct cfg80211_chan_def *chandef); 2349 2350 int (*scan)(struct wiphy *wiphy, 2351 struct cfg80211_scan_request *request); 2352 2353 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 2354 struct cfg80211_auth_request *req); 2355 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 2356 struct cfg80211_assoc_request *req); 2357 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 2358 struct cfg80211_deauth_request *req); 2359 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 2360 struct cfg80211_disassoc_request *req); 2361 2362 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 2363 struct cfg80211_connect_params *sme); 2364 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 2365 u16 reason_code); 2366 2367 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 2368 struct cfg80211_ibss_params *params); 2369 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 2370 2371 int (*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev, 2372 int rate[IEEE80211_NUM_BANDS]); 2373 2374 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 2375 2376 int (*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2377 enum nl80211_tx_power_setting type, int mbm); 2378 int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2379 int *dbm); 2380 2381 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 2382 const u8 *addr); 2383 2384 void (*rfkill_poll)(struct wiphy *wiphy); 2385 2386 #ifdef CONFIG_NL80211_TESTMODE 2387 int (*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev, 2388 void *data, int len); 2389 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 2390 struct netlink_callback *cb, 2391 void *data, int len); 2392 #endif 2393 2394 int (*set_bitrate_mask)(struct wiphy *wiphy, 2395 struct net_device *dev, 2396 const u8 *peer, 2397 const struct cfg80211_bitrate_mask *mask); 2398 2399 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 2400 int idx, struct survey_info *info); 2401 2402 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2403 struct cfg80211_pmksa *pmksa); 2404 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2405 struct cfg80211_pmksa *pmksa); 2406 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 2407 2408 int (*remain_on_channel)(struct wiphy *wiphy, 2409 struct wireless_dev *wdev, 2410 struct ieee80211_channel *chan, 2411 unsigned int duration, 2412 u64 *cookie); 2413 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 2414 struct wireless_dev *wdev, 2415 u64 cookie); 2416 2417 int (*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev, 2418 struct cfg80211_mgmt_tx_params *params, 2419 u64 *cookie); 2420 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 2421 struct wireless_dev *wdev, 2422 u64 cookie); 2423 2424 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2425 bool enabled, int timeout); 2426 2427 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 2428 struct net_device *dev, 2429 s32 rssi_thold, u32 rssi_hyst); 2430 2431 int (*set_cqm_txe_config)(struct wiphy *wiphy, 2432 struct net_device *dev, 2433 u32 rate, u32 pkts, u32 intvl); 2434 2435 void (*mgmt_frame_register)(struct wiphy *wiphy, 2436 struct wireless_dev *wdev, 2437 u16 frame_type, bool reg); 2438 2439 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 2440 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 2441 2442 int (*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx); 2443 void (*get_ringparam)(struct wiphy *wiphy, 2444 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 2445 2446 int (*sched_scan_start)(struct wiphy *wiphy, 2447 struct net_device *dev, 2448 struct cfg80211_sched_scan_request *request); 2449 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 2450 2451 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 2452 struct cfg80211_gtk_rekey_data *data); 2453 2454 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2455 u8 *peer, u8 action_code, u8 dialog_token, 2456 u16 status_code, const u8 *buf, size_t len); 2457 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 2458 u8 *peer, enum nl80211_tdls_operation oper); 2459 2460 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 2461 const u8 *peer, u64 *cookie); 2462 2463 int (*set_noack_map)(struct wiphy *wiphy, 2464 struct net_device *dev, 2465 u16 noack_map); 2466 2467 int (*get_et_sset_count)(struct wiphy *wiphy, 2468 struct net_device *dev, int sset); 2469 void (*get_et_stats)(struct wiphy *wiphy, struct net_device *dev, 2470 struct ethtool_stats *stats, u64 *data); 2471 void (*get_et_strings)(struct wiphy *wiphy, struct net_device *dev, 2472 u32 sset, u8 *data); 2473 2474 int (*get_channel)(struct wiphy *wiphy, 2475 struct wireless_dev *wdev, 2476 struct cfg80211_chan_def *chandef); 2477 2478 int (*start_p2p_device)(struct wiphy *wiphy, 2479 struct wireless_dev *wdev); 2480 void (*stop_p2p_device)(struct wiphy *wiphy, 2481 struct wireless_dev *wdev); 2482 2483 int (*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev, 2484 const struct cfg80211_acl_data *params); 2485 2486 int (*start_radar_detection)(struct wiphy *wiphy, 2487 struct net_device *dev, 2488 struct cfg80211_chan_def *chandef); 2489 int (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev, 2490 struct cfg80211_update_ft_ies_params *ftie); 2491 int (*crit_proto_start)(struct wiphy *wiphy, 2492 struct wireless_dev *wdev, 2493 enum nl80211_crit_proto_id protocol, 2494 u16 duration); 2495 void (*crit_proto_stop)(struct wiphy *wiphy, 2496 struct wireless_dev *wdev); 2497 int (*set_coalesce)(struct wiphy *wiphy, 2498 struct cfg80211_coalesce *coalesce); 2499 2500 int (*channel_switch)(struct wiphy *wiphy, 2501 struct net_device *dev, 2502 struct cfg80211_csa_settings *params); 2503 int (*set_qos_map)(struct wiphy *wiphy, 2504 struct net_device *dev, 2505 struct cfg80211_qos_map *qos_map); 2506 }; 2507 2508 /* 2509 * wireless hardware and networking interfaces structures 2510 * and registration/helper functions 2511 */ 2512 2513 /** 2514 * enum wiphy_flags - wiphy capability flags 2515 * 2516 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 2517 * wiphy at all 2518 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 2519 * by default -- this flag will be set depending on the kernel's default 2520 * on wiphy_new(), but can be changed by the driver if it has a good 2521 * reason to override the default 2522 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 2523 * on a VLAN interface) 2524 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 2525 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 2526 * control port protocol ethertype. The device also honours the 2527 * control_port_no_encrypt flag. 2528 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 2529 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 2530 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 2531 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 2532 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 2533 * firmware. 2534 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 2535 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 2536 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 2537 * link setup/discovery operations internally. Setup, discovery and 2538 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 2539 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 2540 * used for asking the driver/firmware to perform a TDLS operation. 2541 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 2542 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 2543 * when there are virtual interfaces in AP mode by calling 2544 * cfg80211_report_obss_beacon(). 2545 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 2546 * responds to probe-requests in hardware. 2547 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 2548 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 2549 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels. 2550 * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in 2551 * beaconing mode (AP, IBSS, Mesh, ...). 2552 */ 2553 enum wiphy_flags { 2554 /* use hole at 0 */ 2555 /* use hole at 1 */ 2556 /* use hole at 2 */ 2557 WIPHY_FLAG_NETNS_OK = BIT(3), 2558 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 2559 WIPHY_FLAG_4ADDR_AP = BIT(5), 2560 WIPHY_FLAG_4ADDR_STATION = BIT(6), 2561 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 2562 WIPHY_FLAG_IBSS_RSN = BIT(8), 2563 WIPHY_FLAG_MESH_AUTH = BIT(10), 2564 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 2565 /* use hole at 12 */ 2566 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 2567 WIPHY_FLAG_AP_UAPSD = BIT(14), 2568 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 2569 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 2570 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 2571 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 2572 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 2573 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 2574 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 2575 WIPHY_FLAG_SUPPORTS_5_10_MHZ = BIT(22), 2576 WIPHY_FLAG_HAS_CHANNEL_SWITCH = BIT(23), 2577 }; 2578 2579 /** 2580 * struct ieee80211_iface_limit - limit on certain interface types 2581 * @max: maximum number of interfaces of these types 2582 * @types: interface types (bits) 2583 */ 2584 struct ieee80211_iface_limit { 2585 u16 max; 2586 u16 types; 2587 }; 2588 2589 /** 2590 * struct ieee80211_iface_combination - possible interface combination 2591 * @limits: limits for the given interface types 2592 * @n_limits: number of limitations 2593 * @num_different_channels: can use up to this many different channels 2594 * @max_interfaces: maximum number of interfaces in total allowed in this 2595 * group 2596 * @beacon_int_infra_match: In this combination, the beacon intervals 2597 * between infrastructure and AP types must match. This is required 2598 * only in special cases. 2599 * @radar_detect_widths: bitmap of channel widths supported for radar detection 2600 * 2601 * These examples can be expressed as follows: 2602 * 2603 * Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 2604 * 2605 * struct ieee80211_iface_limit limits1[] = { 2606 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2607 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 2608 * }; 2609 * struct ieee80211_iface_combination combination1 = { 2610 * .limits = limits1, 2611 * .n_limits = ARRAY_SIZE(limits1), 2612 * .max_interfaces = 2, 2613 * .beacon_int_infra_match = true, 2614 * }; 2615 * 2616 * 2617 * Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 2618 * 2619 * struct ieee80211_iface_limit limits2[] = { 2620 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 2621 * BIT(NL80211_IFTYPE_P2P_GO), }, 2622 * }; 2623 * struct ieee80211_iface_combination combination2 = { 2624 * .limits = limits2, 2625 * .n_limits = ARRAY_SIZE(limits2), 2626 * .max_interfaces = 8, 2627 * .num_different_channels = 1, 2628 * }; 2629 * 2630 * 2631 * Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 2632 * This allows for an infrastructure connection and three P2P connections. 2633 * 2634 * struct ieee80211_iface_limit limits3[] = { 2635 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2636 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 2637 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 2638 * }; 2639 * struct ieee80211_iface_combination combination3 = { 2640 * .limits = limits3, 2641 * .n_limits = ARRAY_SIZE(limits3), 2642 * .max_interfaces = 4, 2643 * .num_different_channels = 2, 2644 * }; 2645 */ 2646 struct ieee80211_iface_combination { 2647 const struct ieee80211_iface_limit *limits; 2648 u32 num_different_channels; 2649 u16 max_interfaces; 2650 u8 n_limits; 2651 bool beacon_int_infra_match; 2652 u8 radar_detect_widths; 2653 }; 2654 2655 struct ieee80211_txrx_stypes { 2656 u16 tx, rx; 2657 }; 2658 2659 /** 2660 * enum wiphy_wowlan_support_flags - WoWLAN support flags 2661 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 2662 * trigger that keeps the device operating as-is and 2663 * wakes up the host on any activity, for example a 2664 * received packet that passed filtering; note that the 2665 * packet should be preserved in that case 2666 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 2667 * (see nl80211.h) 2668 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 2669 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 2670 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 2671 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 2672 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 2673 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 2674 */ 2675 enum wiphy_wowlan_support_flags { 2676 WIPHY_WOWLAN_ANY = BIT(0), 2677 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 2678 WIPHY_WOWLAN_DISCONNECT = BIT(2), 2679 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 2680 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 2681 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 2682 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 2683 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 2684 }; 2685 2686 struct wiphy_wowlan_tcp_support { 2687 const struct nl80211_wowlan_tcp_data_token_feature *tok; 2688 u32 data_payload_max; 2689 u32 data_interval_max; 2690 u32 wake_payload_max; 2691 bool seq; 2692 }; 2693 2694 /** 2695 * struct wiphy_wowlan_support - WoWLAN support data 2696 * @flags: see &enum wiphy_wowlan_support_flags 2697 * @n_patterns: number of supported wakeup patterns 2698 * (see nl80211.h for the pattern definition) 2699 * @pattern_max_len: maximum length of each pattern 2700 * @pattern_min_len: minimum length of each pattern 2701 * @max_pkt_offset: maximum Rx packet offset 2702 * @tcp: TCP wakeup support information 2703 */ 2704 struct wiphy_wowlan_support { 2705 u32 flags; 2706 int n_patterns; 2707 int pattern_max_len; 2708 int pattern_min_len; 2709 int max_pkt_offset; 2710 const struct wiphy_wowlan_tcp_support *tcp; 2711 }; 2712 2713 /** 2714 * struct wiphy_coalesce_support - coalesce support data 2715 * @n_rules: maximum number of coalesce rules 2716 * @max_delay: maximum supported coalescing delay in msecs 2717 * @n_patterns: number of supported patterns in a rule 2718 * (see nl80211.h for the pattern definition) 2719 * @pattern_max_len: maximum length of each pattern 2720 * @pattern_min_len: minimum length of each pattern 2721 * @max_pkt_offset: maximum Rx packet offset 2722 */ 2723 struct wiphy_coalesce_support { 2724 int n_rules; 2725 int max_delay; 2726 int n_patterns; 2727 int pattern_max_len; 2728 int pattern_min_len; 2729 int max_pkt_offset; 2730 }; 2731 2732 /** 2733 * enum wiphy_vendor_command_flags - validation flags for vendor commands 2734 * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev 2735 * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev 2736 * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running 2737 * (must be combined with %_WDEV or %_NETDEV) 2738 */ 2739 enum wiphy_vendor_command_flags { 2740 WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0), 2741 WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1), 2742 WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2), 2743 }; 2744 2745 /** 2746 * struct wiphy_vendor_command - vendor command definition 2747 * @info: vendor command identifying information, as used in nl80211 2748 * @flags: flags, see &enum wiphy_vendor_command_flags 2749 * @doit: callback for the operation, note that wdev is %NULL if the 2750 * flags didn't ask for a wdev and non-%NULL otherwise; the data 2751 * pointer may be %NULL if userspace provided no data at all 2752 */ 2753 struct wiphy_vendor_command { 2754 struct nl80211_vendor_cmd_info info; 2755 u32 flags; 2756 int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev, 2757 const void *data, int data_len); 2758 }; 2759 2760 /** 2761 * struct wiphy - wireless hardware description 2762 * @reg_notifier: the driver's regulatory notification callback, 2763 * note that if your driver uses wiphy_apply_custom_regulatory() 2764 * the reg_notifier's request can be passed as NULL 2765 * @regd: the driver's regulatory domain, if one was requested via 2766 * the regulatory_hint() API. This can be used by the driver 2767 * on the reg_notifier() if it chooses to ignore future 2768 * regulatory domain changes caused by other drivers. 2769 * @signal_type: signal type reported in &struct cfg80211_bss. 2770 * @cipher_suites: supported cipher suites 2771 * @n_cipher_suites: number of supported cipher suites 2772 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 2773 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 2774 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 2775 * -1 = fragmentation disabled, only odd values >= 256 used 2776 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 2777 * @_net: the network namespace this wiphy currently lives in 2778 * @perm_addr: permanent MAC address of this device 2779 * @addr_mask: If the device supports multiple MAC addresses by masking, 2780 * set this to a mask with variable bits set to 1, e.g. if the last 2781 * four bits are variable then set it to 00:...:00:0f. The actual 2782 * variable bits shall be determined by the interfaces added, with 2783 * interfaces not matching the mask being rejected to be brought up. 2784 * @n_addresses: number of addresses in @addresses. 2785 * @addresses: If the device has more than one address, set this pointer 2786 * to a list of addresses (6 bytes each). The first one will be used 2787 * by default for perm_addr. In this case, the mask should be set to 2788 * all-zeroes. In this case it is assumed that the device can handle 2789 * the same number of arbitrary MAC addresses. 2790 * @registered: protects ->resume and ->suspend sysfs callbacks against 2791 * unregister hardware 2792 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 2793 * automatically on wiphy renames 2794 * @dev: (virtual) struct device for this wiphy 2795 * @registered: helps synchronize suspend/resume with wiphy unregister 2796 * @wext: wireless extension handlers 2797 * @priv: driver private data (sized according to wiphy_new() parameter) 2798 * @interface_modes: bitmask of interfaces types valid for this wiphy, 2799 * must be set by driver 2800 * @iface_combinations: Valid interface combinations array, should not 2801 * list single interface types. 2802 * @n_iface_combinations: number of entries in @iface_combinations array. 2803 * @software_iftypes: bitmask of software interface types, these are not 2804 * subject to any restrictions since they are purely managed in SW. 2805 * @flags: wiphy flags, see &enum wiphy_flags 2806 * @regulatory_flags: wiphy regulatory flags, see 2807 * &enum ieee80211_regulatory_flags 2808 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 2809 * @bss_priv_size: each BSS struct has private data allocated with it, 2810 * this variable determines its size 2811 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 2812 * any given scan 2813 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 2814 * for in any given scheduled scan 2815 * @max_match_sets: maximum number of match sets the device can handle 2816 * when performing a scheduled scan, 0 if filtering is not 2817 * supported. 2818 * @max_scan_ie_len: maximum length of user-controlled IEs device can 2819 * add to probe request frames transmitted during a scan, must not 2820 * include fixed IEs like supported rates 2821 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 2822 * scans 2823 * @coverage_class: current coverage class 2824 * @fw_version: firmware version for ethtool reporting 2825 * @hw_version: hardware version for ethtool reporting 2826 * @max_num_pmkids: maximum number of PMKIDs supported by device 2827 * @privid: a pointer that drivers can use to identify if an arbitrary 2828 * wiphy is theirs, e.g. in global notifiers 2829 * @bands: information about bands/channels supported by this device 2830 * 2831 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 2832 * transmitted through nl80211, points to an array indexed by interface 2833 * type 2834 * 2835 * @available_antennas_tx: bitmap of antennas which are available to be 2836 * configured as TX antennas. Antenna configuration commands will be 2837 * rejected unless this or @available_antennas_rx is set. 2838 * 2839 * @available_antennas_rx: bitmap of antennas which are available to be 2840 * configured as RX antennas. Antenna configuration commands will be 2841 * rejected unless this or @available_antennas_tx is set. 2842 * 2843 * @probe_resp_offload: 2844 * Bitmap of supported protocols for probe response offloading. 2845 * See &enum nl80211_probe_resp_offload_support_attr. Only valid 2846 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 2847 * 2848 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 2849 * may request, if implemented. 2850 * 2851 * @wowlan: WoWLAN support information 2852 * @wowlan_config: current WoWLAN configuration; this should usually not be 2853 * used since access to it is necessarily racy, use the parameter passed 2854 * to the suspend() operation instead. 2855 * 2856 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 2857 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 2858 * If null, then none can be over-ridden. 2859 * @vht_capa_mod_mask: Specify what VHT capabilities can be over-ridden. 2860 * If null, then none can be over-ridden. 2861 * 2862 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device 2863 * supports for ACL. 2864 * 2865 * @extended_capabilities: extended capabilities supported by the driver, 2866 * additional capabilities might be supported by userspace; these are 2867 * the 802.11 extended capabilities ("Extended Capabilities element") 2868 * and are in the same format as in the information element. See 2869 * 802.11-2012 8.4.2.29 for the defined fields. 2870 * @extended_capabilities_mask: mask of the valid values 2871 * @extended_capabilities_len: length of the extended capabilities 2872 * @coalesce: packet coalescing support information 2873 * 2874 * @vendor_commands: array of vendor commands supported by the hardware 2875 * @n_vendor_commands: number of vendor commands 2876 * @vendor_events: array of vendor events supported by the hardware 2877 * @n_vendor_events: number of vendor events 2878 */ 2879 struct wiphy { 2880 /* assign these fields before you register the wiphy */ 2881 2882 /* permanent MAC address(es) */ 2883 u8 perm_addr[ETH_ALEN]; 2884 u8 addr_mask[ETH_ALEN]; 2885 2886 struct mac_address *addresses; 2887 2888 const struct ieee80211_txrx_stypes *mgmt_stypes; 2889 2890 const struct ieee80211_iface_combination *iface_combinations; 2891 int n_iface_combinations; 2892 u16 software_iftypes; 2893 2894 u16 n_addresses; 2895 2896 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 2897 u16 interface_modes; 2898 2899 u16 max_acl_mac_addrs; 2900 2901 u32 flags, regulatory_flags, features; 2902 2903 u32 ap_sme_capa; 2904 2905 enum cfg80211_signal_type signal_type; 2906 2907 int bss_priv_size; 2908 u8 max_scan_ssids; 2909 u8 max_sched_scan_ssids; 2910 u8 max_match_sets; 2911 u16 max_scan_ie_len; 2912 u16 max_sched_scan_ie_len; 2913 2914 int n_cipher_suites; 2915 const u32 *cipher_suites; 2916 2917 u8 retry_short; 2918 u8 retry_long; 2919 u32 frag_threshold; 2920 u32 rts_threshold; 2921 u8 coverage_class; 2922 2923 char fw_version[ETHTOOL_FWVERS_LEN]; 2924 u32 hw_version; 2925 2926 #ifdef CONFIG_PM 2927 const struct wiphy_wowlan_support *wowlan; 2928 struct cfg80211_wowlan *wowlan_config; 2929 #endif 2930 2931 u16 max_remain_on_channel_duration; 2932 2933 u8 max_num_pmkids; 2934 2935 u32 available_antennas_tx; 2936 u32 available_antennas_rx; 2937 2938 /* 2939 * Bitmap of supported protocols for probe response offloading 2940 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 2941 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 2942 */ 2943 u32 probe_resp_offload; 2944 2945 const u8 *extended_capabilities, *extended_capabilities_mask; 2946 u8 extended_capabilities_len; 2947 2948 /* If multiple wiphys are registered and you're handed e.g. 2949 * a regular netdev with assigned ieee80211_ptr, you won't 2950 * know whether it points to a wiphy your driver has registered 2951 * or not. Assign this to something global to your driver to 2952 * help determine whether you own this wiphy or not. */ 2953 const void *privid; 2954 2955 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 2956 2957 /* Lets us get back the wiphy on the callback */ 2958 void (*reg_notifier)(struct wiphy *wiphy, 2959 struct regulatory_request *request); 2960 2961 /* fields below are read-only, assigned by cfg80211 */ 2962 2963 const struct ieee80211_regdomain __rcu *regd; 2964 2965 /* the item in /sys/class/ieee80211/ points to this, 2966 * you need use set_wiphy_dev() (see below) */ 2967 struct device dev; 2968 2969 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 2970 bool registered; 2971 2972 /* dir in debugfs: ieee80211/<wiphyname> */ 2973 struct dentry *debugfsdir; 2974 2975 const struct ieee80211_ht_cap *ht_capa_mod_mask; 2976 const struct ieee80211_vht_cap *vht_capa_mod_mask; 2977 2978 #ifdef CONFIG_NET_NS 2979 /* the network namespace this phy lives in currently */ 2980 struct net *_net; 2981 #endif 2982 2983 #ifdef CONFIG_CFG80211_WEXT 2984 const struct iw_handler_def *wext; 2985 #endif 2986 2987 const struct wiphy_coalesce_support *coalesce; 2988 2989 const struct wiphy_vendor_command *vendor_commands; 2990 const struct nl80211_vendor_cmd_info *vendor_events; 2991 int n_vendor_commands, n_vendor_events; 2992 2993 char priv[0] __aligned(NETDEV_ALIGN); 2994 }; 2995 2996 static inline struct net *wiphy_net(struct wiphy *wiphy) 2997 { 2998 return read_pnet(&wiphy->_net); 2999 } 3000 3001 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 3002 { 3003 write_pnet(&wiphy->_net, net); 3004 } 3005 3006 /** 3007 * wiphy_priv - return priv from wiphy 3008 * 3009 * @wiphy: the wiphy whose priv pointer to return 3010 * Return: The priv of @wiphy. 3011 */ 3012 static inline void *wiphy_priv(struct wiphy *wiphy) 3013 { 3014 BUG_ON(!wiphy); 3015 return &wiphy->priv; 3016 } 3017 3018 /** 3019 * priv_to_wiphy - return the wiphy containing the priv 3020 * 3021 * @priv: a pointer previously returned by wiphy_priv 3022 * Return: The wiphy of @priv. 3023 */ 3024 static inline struct wiphy *priv_to_wiphy(void *priv) 3025 { 3026 BUG_ON(!priv); 3027 return container_of(priv, struct wiphy, priv); 3028 } 3029 3030 /** 3031 * set_wiphy_dev - set device pointer for wiphy 3032 * 3033 * @wiphy: The wiphy whose device to bind 3034 * @dev: The device to parent it to 3035 */ 3036 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 3037 { 3038 wiphy->dev.parent = dev; 3039 } 3040 3041 /** 3042 * wiphy_dev - get wiphy dev pointer 3043 * 3044 * @wiphy: The wiphy whose device struct to look up 3045 * Return: The dev of @wiphy. 3046 */ 3047 static inline struct device *wiphy_dev(struct wiphy *wiphy) 3048 { 3049 return wiphy->dev.parent; 3050 } 3051 3052 /** 3053 * wiphy_name - get wiphy name 3054 * 3055 * @wiphy: The wiphy whose name to return 3056 * Return: The name of @wiphy. 3057 */ 3058 static inline const char *wiphy_name(const struct wiphy *wiphy) 3059 { 3060 return dev_name(&wiphy->dev); 3061 } 3062 3063 /** 3064 * wiphy_new - create a new wiphy for use with cfg80211 3065 * 3066 * @ops: The configuration operations for this device 3067 * @sizeof_priv: The size of the private area to allocate 3068 * 3069 * Create a new wiphy and associate the given operations with it. 3070 * @sizeof_priv bytes are allocated for private use. 3071 * 3072 * Return: A pointer to the new wiphy. This pointer must be 3073 * assigned to each netdev's ieee80211_ptr for proper operation. 3074 */ 3075 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 3076 3077 /** 3078 * wiphy_register - register a wiphy with cfg80211 3079 * 3080 * @wiphy: The wiphy to register. 3081 * 3082 * Return: A non-negative wiphy index or a negative error code. 3083 */ 3084 int wiphy_register(struct wiphy *wiphy); 3085 3086 /** 3087 * wiphy_unregister - deregister a wiphy from cfg80211 3088 * 3089 * @wiphy: The wiphy to unregister. 3090 * 3091 * After this call, no more requests can be made with this priv 3092 * pointer, but the call may sleep to wait for an outstanding 3093 * request that is being handled. 3094 */ 3095 void wiphy_unregister(struct wiphy *wiphy); 3096 3097 /** 3098 * wiphy_free - free wiphy 3099 * 3100 * @wiphy: The wiphy to free 3101 */ 3102 void wiphy_free(struct wiphy *wiphy); 3103 3104 /* internal structs */ 3105 struct cfg80211_conn; 3106 struct cfg80211_internal_bss; 3107 struct cfg80211_cached_keys; 3108 3109 /** 3110 * struct wireless_dev - wireless device state 3111 * 3112 * For netdevs, this structure must be allocated by the driver 3113 * that uses the ieee80211_ptr field in struct net_device (this 3114 * is intentional so it can be allocated along with the netdev.) 3115 * It need not be registered then as netdev registration will 3116 * be intercepted by cfg80211 to see the new wireless device. 3117 * 3118 * For non-netdev uses, it must also be allocated by the driver 3119 * in response to the cfg80211 callbacks that require it, as 3120 * there's no netdev registration in that case it may not be 3121 * allocated outside of callback operations that return it. 3122 * 3123 * @wiphy: pointer to hardware description 3124 * @iftype: interface type 3125 * @list: (private) Used to collect the interfaces 3126 * @netdev: (private) Used to reference back to the netdev, may be %NULL 3127 * @identifier: (private) Identifier used in nl80211 to identify this 3128 * wireless device if it has no netdev 3129 * @current_bss: (private) Used by the internal configuration code 3130 * @channel: (private) Used by the internal configuration code to track 3131 * the user-set AP, monitor and WDS channel 3132 * @preset_chandef: (private) Used by the internal configuration code to 3133 * track the channel to be used for AP later 3134 * @bssid: (private) Used by the internal configuration code 3135 * @ssid: (private) Used by the internal configuration code 3136 * @ssid_len: (private) Used by the internal configuration code 3137 * @mesh_id_len: (private) Used by the internal configuration code 3138 * @mesh_id_up_len: (private) Used by the internal configuration code 3139 * @wext: (private) Used by the internal wireless extensions compat code 3140 * @use_4addr: indicates 4addr mode is used on this interface, must be 3141 * set by driver (if supported) on add_interface BEFORE registering the 3142 * netdev and may otherwise be used by driver read-only, will be update 3143 * by cfg80211 on change_interface 3144 * @mgmt_registrations: list of registrations for management frames 3145 * @mgmt_registrations_lock: lock for the list 3146 * @mtx: mutex used to lock data in this struct, may be used by drivers 3147 * and some API functions require it held 3148 * @beacon_interval: beacon interval used on this device for transmitting 3149 * beacons, 0 when not valid 3150 * @address: The address for this device, valid only if @netdev is %NULL 3151 * @p2p_started: true if this is a P2P Device that has been started 3152 * @cac_started: true if DFS channel availability check has been started 3153 * @cac_start_time: timestamp (jiffies) when the dfs state was entered. 3154 * @ps: powersave mode is enabled 3155 * @ps_timeout: dynamic powersave timeout 3156 * @ap_unexpected_nlportid: (private) netlink port ID of application 3157 * registered for unexpected class 3 frames (AP mode) 3158 * @conn: (private) cfg80211 software SME connection state machine data 3159 * @connect_keys: (private) keys to set after connection is established 3160 * @ibss_fixed: (private) IBSS is using fixed BSSID 3161 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel 3162 * @event_list: (private) list for internal event processing 3163 * @event_lock: (private) lock for event list 3164 */ 3165 struct wireless_dev { 3166 struct wiphy *wiphy; 3167 enum nl80211_iftype iftype; 3168 3169 /* the remainder of this struct should be private to cfg80211 */ 3170 struct list_head list; 3171 struct net_device *netdev; 3172 3173 u32 identifier; 3174 3175 struct list_head mgmt_registrations; 3176 spinlock_t mgmt_registrations_lock; 3177 3178 struct mutex mtx; 3179 3180 bool use_4addr, p2p_started; 3181 3182 u8 address[ETH_ALEN] __aligned(sizeof(u16)); 3183 3184 /* currently used for IBSS and SME - might be rearranged later */ 3185 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3186 u8 ssid_len, mesh_id_len, mesh_id_up_len; 3187 struct cfg80211_conn *conn; 3188 struct cfg80211_cached_keys *connect_keys; 3189 3190 struct list_head event_list; 3191 spinlock_t event_lock; 3192 3193 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 3194 struct cfg80211_chan_def preset_chandef; 3195 3196 /* for AP and mesh channel tracking */ 3197 struct ieee80211_channel *channel; 3198 3199 bool ibss_fixed; 3200 bool ibss_dfs_possible; 3201 3202 bool ps; 3203 int ps_timeout; 3204 3205 int beacon_interval; 3206 3207 u32 ap_unexpected_nlportid; 3208 3209 bool cac_started; 3210 unsigned long cac_start_time; 3211 3212 #ifdef CONFIG_CFG80211_WEXT 3213 /* wext data */ 3214 struct { 3215 struct cfg80211_ibss_params ibss; 3216 struct cfg80211_connect_params connect; 3217 struct cfg80211_cached_keys *keys; 3218 u8 *ie; 3219 size_t ie_len; 3220 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 3221 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3222 s8 default_key, default_mgmt_key; 3223 bool prev_bssid_valid; 3224 } wext; 3225 #endif 3226 }; 3227 3228 static inline u8 *wdev_address(struct wireless_dev *wdev) 3229 { 3230 if (wdev->netdev) 3231 return wdev->netdev->dev_addr; 3232 return wdev->address; 3233 } 3234 3235 /** 3236 * wdev_priv - return wiphy priv from wireless_dev 3237 * 3238 * @wdev: The wireless device whose wiphy's priv pointer to return 3239 * Return: The wiphy priv of @wdev. 3240 */ 3241 static inline void *wdev_priv(struct wireless_dev *wdev) 3242 { 3243 BUG_ON(!wdev); 3244 return wiphy_priv(wdev->wiphy); 3245 } 3246 3247 /** 3248 * DOC: Utility functions 3249 * 3250 * cfg80211 offers a number of utility functions that can be useful. 3251 */ 3252 3253 /** 3254 * ieee80211_channel_to_frequency - convert channel number to frequency 3255 * @chan: channel number 3256 * @band: band, necessary due to channel number overlap 3257 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed. 3258 */ 3259 int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 3260 3261 /** 3262 * ieee80211_frequency_to_channel - convert frequency to channel number 3263 * @freq: center frequency 3264 * Return: The corresponding channel, or 0 if the conversion failed. 3265 */ 3266 int ieee80211_frequency_to_channel(int freq); 3267 3268 /* 3269 * Name indirection necessary because the ieee80211 code also has 3270 * a function named "ieee80211_get_channel", so if you include 3271 * cfg80211's header file you get cfg80211's version, if you try 3272 * to include both header files you'll (rightfully!) get a symbol 3273 * clash. 3274 */ 3275 struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 3276 int freq); 3277 /** 3278 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 3279 * @wiphy: the struct wiphy to get the channel for 3280 * @freq: the center frequency of the channel 3281 * Return: The channel struct from @wiphy at @freq. 3282 */ 3283 static inline struct ieee80211_channel * 3284 ieee80211_get_channel(struct wiphy *wiphy, int freq) 3285 { 3286 return __ieee80211_get_channel(wiphy, freq); 3287 } 3288 3289 /** 3290 * ieee80211_get_response_rate - get basic rate for a given rate 3291 * 3292 * @sband: the band to look for rates in 3293 * @basic_rates: bitmap of basic rates 3294 * @bitrate: the bitrate for which to find the basic rate 3295 * 3296 * Return: The basic rate corresponding to a given bitrate, that 3297 * is the next lower bitrate contained in the basic rate map, 3298 * which is, for this function, given as a bitmap of indices of 3299 * rates in the band's bitrate table. 3300 */ 3301 struct ieee80211_rate * 3302 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 3303 u32 basic_rates, int bitrate); 3304 3305 /** 3306 * ieee80211_mandatory_rates - get mandatory rates for a given band 3307 * @sband: the band to look for rates in 3308 * @scan_width: width of the control channel 3309 * 3310 * This function returns a bitmap of the mandatory rates for the given 3311 * band, bits are set according to the rate position in the bitrates array. 3312 */ 3313 u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, 3314 enum nl80211_bss_scan_width scan_width); 3315 3316 /* 3317 * Radiotap parsing functions -- for controlled injection support 3318 * 3319 * Implemented in net/wireless/radiotap.c 3320 * Documentation in Documentation/networking/radiotap-headers.txt 3321 */ 3322 3323 struct radiotap_align_size { 3324 uint8_t align:4, size:4; 3325 }; 3326 3327 struct ieee80211_radiotap_namespace { 3328 const struct radiotap_align_size *align_size; 3329 int n_bits; 3330 uint32_t oui; 3331 uint8_t subns; 3332 }; 3333 3334 struct ieee80211_radiotap_vendor_namespaces { 3335 const struct ieee80211_radiotap_namespace *ns; 3336 int n_ns; 3337 }; 3338 3339 /** 3340 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 3341 * @this_arg_index: index of current arg, valid after each successful call 3342 * to ieee80211_radiotap_iterator_next() 3343 * @this_arg: pointer to current radiotap arg; it is valid after each 3344 * call to ieee80211_radiotap_iterator_next() but also after 3345 * ieee80211_radiotap_iterator_init() where it will point to 3346 * the beginning of the actual data portion 3347 * @this_arg_size: length of the current arg, for convenience 3348 * @current_namespace: pointer to the current namespace definition 3349 * (or internally %NULL if the current namespace is unknown) 3350 * @is_radiotap_ns: indicates whether the current namespace is the default 3351 * radiotap namespace or not 3352 * 3353 * @_rtheader: pointer to the radiotap header we are walking through 3354 * @_max_length: length of radiotap header in cpu byte ordering 3355 * @_arg_index: next argument index 3356 * @_arg: next argument pointer 3357 * @_next_bitmap: internal pointer to next present u32 3358 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 3359 * @_vns: vendor namespace definitions 3360 * @_next_ns_data: beginning of the next namespace's data 3361 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 3362 * next bitmap word 3363 * 3364 * Describes the radiotap parser state. Fields prefixed with an underscore 3365 * must not be used by users of the parser, only by the parser internally. 3366 */ 3367 3368 struct ieee80211_radiotap_iterator { 3369 struct ieee80211_radiotap_header *_rtheader; 3370 const struct ieee80211_radiotap_vendor_namespaces *_vns; 3371 const struct ieee80211_radiotap_namespace *current_namespace; 3372 3373 unsigned char *_arg, *_next_ns_data; 3374 __le32 *_next_bitmap; 3375 3376 unsigned char *this_arg; 3377 int this_arg_index; 3378 int this_arg_size; 3379 3380 int is_radiotap_ns; 3381 3382 int _max_length; 3383 int _arg_index; 3384 uint32_t _bitmap_shifter; 3385 int _reset_on_ext; 3386 }; 3387 3388 int 3389 ieee80211_radiotap_iterator_init(struct ieee80211_radiotap_iterator *iterator, 3390 struct ieee80211_radiotap_header *radiotap_header, 3391 int max_length, 3392 const struct ieee80211_radiotap_vendor_namespaces *vns); 3393 3394 int 3395 ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator); 3396 3397 3398 extern const unsigned char rfc1042_header[6]; 3399 extern const unsigned char bridge_tunnel_header[6]; 3400 3401 /** 3402 * ieee80211_get_hdrlen_from_skb - get header length from data 3403 * 3404 * @skb: the frame 3405 * 3406 * Given an skb with a raw 802.11 header at the data pointer this function 3407 * returns the 802.11 header length. 3408 * 3409 * Return: The 802.11 header length in bytes (not including encryption 3410 * headers). Or 0 if the data in the sk_buff is too short to contain a valid 3411 * 802.11 header. 3412 */ 3413 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 3414 3415 /** 3416 * ieee80211_hdrlen - get header length in bytes from frame control 3417 * @fc: frame control field in little-endian format 3418 * Return: The header length in bytes. 3419 */ 3420 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 3421 3422 /** 3423 * ieee80211_get_mesh_hdrlen - get mesh extension header length 3424 * @meshhdr: the mesh extension header, only the flags field 3425 * (first byte) will be accessed 3426 * Return: The length of the extension header, which is always at 3427 * least 6 bytes and at most 18 if address 5 and 6 are present. 3428 */ 3429 unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); 3430 3431 /** 3432 * DOC: Data path helpers 3433 * 3434 * In addition to generic utilities, cfg80211 also offers 3435 * functions that help implement the data path for devices 3436 * that do not do the 802.11/802.3 conversion on the device. 3437 */ 3438 3439 /** 3440 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 3441 * @skb: the 802.11 data frame 3442 * @addr: the device MAC address 3443 * @iftype: the virtual interface type 3444 * Return: 0 on success. Non-zero on error. 3445 */ 3446 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 3447 enum nl80211_iftype iftype); 3448 3449 /** 3450 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 3451 * @skb: the 802.3 frame 3452 * @addr: the device MAC address 3453 * @iftype: the virtual interface type 3454 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 3455 * @qos: build 802.11 QoS data frame 3456 * Return: 0 on success, or a negative error code. 3457 */ 3458 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 3459 enum nl80211_iftype iftype, u8 *bssid, bool qos); 3460 3461 /** 3462 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 3463 * 3464 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 3465 * 802.3 frames. The @list will be empty if the decode fails. The 3466 * @skb is consumed after the function returns. 3467 * 3468 * @skb: The input IEEE 802.11n A-MSDU frame. 3469 * @list: The output list of 802.3 frames. It must be allocated and 3470 * initialized by by the caller. 3471 * @addr: The device MAC address. 3472 * @iftype: The device interface type. 3473 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 3474 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 3475 */ 3476 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 3477 const u8 *addr, enum nl80211_iftype iftype, 3478 const unsigned int extra_headroom, 3479 bool has_80211_header); 3480 3481 /** 3482 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 3483 * @skb: the data frame 3484 * @qos_map: Interworking QoS mapping or %NULL if not in use 3485 * Return: The 802.1p/1d tag. 3486 */ 3487 unsigned int cfg80211_classify8021d(struct sk_buff *skb, 3488 struct cfg80211_qos_map *qos_map); 3489 3490 /** 3491 * cfg80211_find_ie - find information element in data 3492 * 3493 * @eid: element ID 3494 * @ies: data consisting of IEs 3495 * @len: length of data 3496 * 3497 * Return: %NULL if the element ID could not be found or if 3498 * the element is invalid (claims to be longer than the given 3499 * data), or a pointer to the first byte of the requested 3500 * element, that is the byte containing the element ID. 3501 * 3502 * Note: There are no checks on the element length other than 3503 * having to fit into the given data. 3504 */ 3505 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 3506 3507 /** 3508 * cfg80211_find_vendor_ie - find vendor specific information element in data 3509 * 3510 * @oui: vendor OUI 3511 * @oui_type: vendor-specific OUI type 3512 * @ies: data consisting of IEs 3513 * @len: length of data 3514 * 3515 * Return: %NULL if the vendor specific element ID could not be found or if the 3516 * element is invalid (claims to be longer than the given data), or a pointer to 3517 * the first byte of the requested element, that is the byte containing the 3518 * element ID. 3519 * 3520 * Note: There are no checks on the element length other than having to fit into 3521 * the given data. 3522 */ 3523 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 3524 const u8 *ies, int len); 3525 3526 /** 3527 * DOC: Regulatory enforcement infrastructure 3528 * 3529 * TODO 3530 */ 3531 3532 /** 3533 * regulatory_hint - driver hint to the wireless core a regulatory domain 3534 * @wiphy: the wireless device giving the hint (used only for reporting 3535 * conflicts) 3536 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 3537 * should be in. If @rd is set this should be NULL. Note that if you 3538 * set this to NULL you should still set rd->alpha2 to some accepted 3539 * alpha2. 3540 * 3541 * Wireless drivers can use this function to hint to the wireless core 3542 * what it believes should be the current regulatory domain by 3543 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 3544 * domain should be in or by providing a completely build regulatory domain. 3545 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 3546 * for a regulatory domain structure for the respective country. 3547 * 3548 * The wiphy must have been registered to cfg80211 prior to this call. 3549 * For cfg80211 drivers this means you must first use wiphy_register(), 3550 * for mac80211 drivers you must first use ieee80211_register_hw(). 3551 * 3552 * Drivers should check the return value, its possible you can get 3553 * an -ENOMEM. 3554 * 3555 * Return: 0 on success. -ENOMEM. 3556 */ 3557 int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 3558 3559 /** 3560 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 3561 * @wiphy: the wireless device we want to process the regulatory domain on 3562 * @regd: the custom regulatory domain to use for this wiphy 3563 * 3564 * Drivers can sometimes have custom regulatory domains which do not apply 3565 * to a specific country. Drivers can use this to apply such custom regulatory 3566 * domains. This routine must be called prior to wiphy registration. The 3567 * custom regulatory domain will be trusted completely and as such previous 3568 * default channel settings will be disregarded. If no rule is found for a 3569 * channel on the regulatory domain the channel will be disabled. 3570 * Drivers using this for a wiphy should also set the wiphy flag 3571 * WIPHY_FLAG_CUSTOM_REGULATORY or cfg80211 will set it for the wiphy 3572 * that called this helper. 3573 */ 3574 void wiphy_apply_custom_regulatory(struct wiphy *wiphy, 3575 const struct ieee80211_regdomain *regd); 3576 3577 /** 3578 * freq_reg_info - get regulatory information for the given frequency 3579 * @wiphy: the wiphy for which we want to process this rule for 3580 * @center_freq: Frequency in KHz for which we want regulatory information for 3581 * 3582 * Use this function to get the regulatory rule for a specific frequency on 3583 * a given wireless device. If the device has a specific regulatory domain 3584 * it wants to follow we respect that unless a country IE has been received 3585 * and processed already. 3586 * 3587 * Return: A valid pointer, or, when an error occurs, for example if no rule 3588 * can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to 3589 * check and PTR_ERR() to obtain the numeric return value. The numeric return 3590 * value will be -ERANGE if we determine the given center_freq does not even 3591 * have a regulatory rule for a frequency range in the center_freq's band. 3592 * See freq_in_rule_band() for our current definition of a band -- this is 3593 * purely subjective and right now it's 802.11 specific. 3594 */ 3595 const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, 3596 u32 center_freq); 3597 3598 /** 3599 * reg_initiator_name - map regulatory request initiator enum to name 3600 * @initiator: the regulatory request initiator 3601 * 3602 * You can use this to map the regulatory request initiator enum to a 3603 * proper string representation. 3604 */ 3605 const char *reg_initiator_name(enum nl80211_reg_initiator initiator); 3606 3607 /* 3608 * callbacks for asynchronous cfg80211 methods, notification 3609 * functions and BSS handling helpers 3610 */ 3611 3612 /** 3613 * cfg80211_scan_done - notify that scan finished 3614 * 3615 * @request: the corresponding scan request 3616 * @aborted: set to true if the scan was aborted for any reason, 3617 * userspace will be notified of that 3618 */ 3619 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 3620 3621 /** 3622 * cfg80211_sched_scan_results - notify that new scan results are available 3623 * 3624 * @wiphy: the wiphy which got scheduled scan results 3625 */ 3626 void cfg80211_sched_scan_results(struct wiphy *wiphy); 3627 3628 /** 3629 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 3630 * 3631 * @wiphy: the wiphy on which the scheduled scan stopped 3632 * 3633 * The driver can call this function to inform cfg80211 that the 3634 * scheduled scan had to be stopped, for whatever reason. The driver 3635 * is then called back via the sched_scan_stop operation when done. 3636 */ 3637 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 3638 3639 /** 3640 * cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame 3641 * 3642 * @wiphy: the wiphy reporting the BSS 3643 * @channel: The channel the frame was received on 3644 * @scan_width: width of the control channel 3645 * @mgmt: the management frame (probe response or beacon) 3646 * @len: length of the management frame 3647 * @signal: the signal strength, type depends on the wiphy's signal_type 3648 * @gfp: context flags 3649 * 3650 * This informs cfg80211 that BSS information was found and 3651 * the BSS should be updated/added. 3652 * 3653 * Return: A referenced struct, must be released with cfg80211_put_bss()! 3654 * Or %NULL on error. 3655 */ 3656 struct cfg80211_bss * __must_check 3657 cfg80211_inform_bss_width_frame(struct wiphy *wiphy, 3658 struct ieee80211_channel *channel, 3659 enum nl80211_bss_scan_width scan_width, 3660 struct ieee80211_mgmt *mgmt, size_t len, 3661 s32 signal, gfp_t gfp); 3662 3663 static inline struct cfg80211_bss * __must_check 3664 cfg80211_inform_bss_frame(struct wiphy *wiphy, 3665 struct ieee80211_channel *channel, 3666 struct ieee80211_mgmt *mgmt, size_t len, 3667 s32 signal, gfp_t gfp) 3668 { 3669 return cfg80211_inform_bss_width_frame(wiphy, channel, 3670 NL80211_BSS_CHAN_WIDTH_20, 3671 mgmt, len, signal, gfp); 3672 } 3673 3674 /** 3675 * cfg80211_inform_bss - inform cfg80211 of a new BSS 3676 * 3677 * @wiphy: the wiphy reporting the BSS 3678 * @channel: The channel the frame was received on 3679 * @scan_width: width of the control channel 3680 * @bssid: the BSSID of the BSS 3681 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0) 3682 * @capability: the capability field sent by the peer 3683 * @beacon_interval: the beacon interval announced by the peer 3684 * @ie: additional IEs sent by the peer 3685 * @ielen: length of the additional IEs 3686 * @signal: the signal strength, type depends on the wiphy's signal_type 3687 * @gfp: context flags 3688 * 3689 * This informs cfg80211 that BSS information was found and 3690 * the BSS should be updated/added. 3691 * 3692 * Return: A referenced struct, must be released with cfg80211_put_bss()! 3693 * Or %NULL on error. 3694 */ 3695 struct cfg80211_bss * __must_check 3696 cfg80211_inform_bss_width(struct wiphy *wiphy, 3697 struct ieee80211_channel *channel, 3698 enum nl80211_bss_scan_width scan_width, 3699 const u8 *bssid, u64 tsf, u16 capability, 3700 u16 beacon_interval, const u8 *ie, size_t ielen, 3701 s32 signal, gfp_t gfp); 3702 3703 static inline struct cfg80211_bss * __must_check 3704 cfg80211_inform_bss(struct wiphy *wiphy, 3705 struct ieee80211_channel *channel, 3706 const u8 *bssid, u64 tsf, u16 capability, 3707 u16 beacon_interval, const u8 *ie, size_t ielen, 3708 s32 signal, gfp_t gfp) 3709 { 3710 return cfg80211_inform_bss_width(wiphy, channel, 3711 NL80211_BSS_CHAN_WIDTH_20, 3712 bssid, tsf, capability, 3713 beacon_interval, ie, ielen, signal, 3714 gfp); 3715 } 3716 3717 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 3718 struct ieee80211_channel *channel, 3719 const u8 *bssid, 3720 const u8 *ssid, size_t ssid_len, 3721 u16 capa_mask, u16 capa_val); 3722 static inline struct cfg80211_bss * 3723 cfg80211_get_ibss(struct wiphy *wiphy, 3724 struct ieee80211_channel *channel, 3725 const u8 *ssid, size_t ssid_len) 3726 { 3727 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 3728 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 3729 } 3730 3731 /** 3732 * cfg80211_ref_bss - reference BSS struct 3733 * @wiphy: the wiphy this BSS struct belongs to 3734 * @bss: the BSS struct to reference 3735 * 3736 * Increments the refcount of the given BSS struct. 3737 */ 3738 void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 3739 3740 /** 3741 * cfg80211_put_bss - unref BSS struct 3742 * @wiphy: the wiphy this BSS struct belongs to 3743 * @bss: the BSS struct 3744 * 3745 * Decrements the refcount of the given BSS struct. 3746 */ 3747 void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 3748 3749 /** 3750 * cfg80211_unlink_bss - unlink BSS from internal data structures 3751 * @wiphy: the wiphy 3752 * @bss: the bss to remove 3753 * 3754 * This function removes the given BSS from the internal data structures 3755 * thereby making it no longer show up in scan results etc. Use this 3756 * function when you detect a BSS is gone. Normally BSSes will also time 3757 * out, so it is not necessary to use this function at all. 3758 */ 3759 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 3760 3761 static inline enum nl80211_bss_scan_width 3762 cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef) 3763 { 3764 switch (chandef->width) { 3765 case NL80211_CHAN_WIDTH_5: 3766 return NL80211_BSS_CHAN_WIDTH_5; 3767 case NL80211_CHAN_WIDTH_10: 3768 return NL80211_BSS_CHAN_WIDTH_10; 3769 default: 3770 return NL80211_BSS_CHAN_WIDTH_20; 3771 } 3772 } 3773 3774 /** 3775 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame 3776 * @dev: network device 3777 * @buf: authentication frame (header + body) 3778 * @len: length of the frame data 3779 * 3780 * This function is called whenever an authentication, disassociation or 3781 * deauthentication frame has been received and processed in station mode. 3782 * After being asked to authenticate via cfg80211_ops::auth() the driver must 3783 * call either this function or cfg80211_auth_timeout(). 3784 * After being asked to associate via cfg80211_ops::assoc() the driver must 3785 * call either this function or cfg80211_auth_timeout(). 3786 * While connected, the driver must calls this for received and processed 3787 * disassociation and deauthentication frames. If the frame couldn't be used 3788 * because it was unprotected, the driver must call the function 3789 * cfg80211_rx_unprot_mlme_mgmt() instead. 3790 * 3791 * This function may sleep. The caller must hold the corresponding wdev's mutex. 3792 */ 3793 void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 3794 3795 /** 3796 * cfg80211_auth_timeout - notification of timed out authentication 3797 * @dev: network device 3798 * @addr: The MAC address of the device with which the authentication timed out 3799 * 3800 * This function may sleep. The caller must hold the corresponding wdev's 3801 * mutex. 3802 */ 3803 void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr); 3804 3805 /** 3806 * cfg80211_rx_assoc_resp - notification of processed association response 3807 * @dev: network device 3808 * @bss: the BSS that association was requested with, ownership of the pointer 3809 * moves to cfg80211 in this call 3810 * @buf: authentication frame (header + body) 3811 * @len: length of the frame data 3812 * 3813 * After being asked to associate via cfg80211_ops::assoc() the driver must 3814 * call either this function or cfg80211_auth_timeout(). 3815 * 3816 * This function may sleep. The caller must hold the corresponding wdev's mutex. 3817 */ 3818 void cfg80211_rx_assoc_resp(struct net_device *dev, 3819 struct cfg80211_bss *bss, 3820 const u8 *buf, size_t len); 3821 3822 /** 3823 * cfg80211_assoc_timeout - notification of timed out association 3824 * @dev: network device 3825 * @bss: The BSS entry with which association timed out. 3826 * 3827 * This function may sleep. The caller must hold the corresponding wdev's mutex. 3828 */ 3829 void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss); 3830 3831 /** 3832 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame 3833 * @dev: network device 3834 * @buf: 802.11 frame (header + body) 3835 * @len: length of the frame data 3836 * 3837 * This function is called whenever deauthentication has been processed in 3838 * station mode. This includes both received deauthentication frames and 3839 * locally generated ones. This function may sleep. The caller must hold the 3840 * corresponding wdev's mutex. 3841 */ 3842 void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 3843 3844 /** 3845 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame 3846 * @dev: network device 3847 * @buf: deauthentication frame (header + body) 3848 * @len: length of the frame data 3849 * 3850 * This function is called whenever a received deauthentication or dissassoc 3851 * frame has been dropped in station mode because of MFP being used but the 3852 * frame was not protected. This function may sleep. 3853 */ 3854 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, 3855 const u8 *buf, size_t len); 3856 3857 /** 3858 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 3859 * @dev: network device 3860 * @addr: The source MAC address of the frame 3861 * @key_type: The key type that the received frame used 3862 * @key_id: Key identifier (0..3). Can be -1 if missing. 3863 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 3864 * @gfp: allocation flags 3865 * 3866 * This function is called whenever the local MAC detects a MIC failure in a 3867 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 3868 * primitive. 3869 */ 3870 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 3871 enum nl80211_key_type key_type, int key_id, 3872 const u8 *tsc, gfp_t gfp); 3873 3874 /** 3875 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 3876 * 3877 * @dev: network device 3878 * @bssid: the BSSID of the IBSS joined 3879 * @gfp: allocation flags 3880 * 3881 * This function notifies cfg80211 that the device joined an IBSS or 3882 * switched to a different BSSID. Before this function can be called, 3883 * either a beacon has to have been received from the IBSS, or one of 3884 * the cfg80211_inform_bss{,_frame} functions must have been called 3885 * with the locally generated beacon -- this guarantees that there is 3886 * always a scan result for this IBSS. cfg80211 will handle the rest. 3887 */ 3888 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 3889 3890 /** 3891 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 3892 * 3893 * @dev: network device 3894 * @macaddr: the MAC address of the new candidate 3895 * @ie: information elements advertised by the peer candidate 3896 * @ie_len: lenght of the information elements buffer 3897 * @gfp: allocation flags 3898 * 3899 * This function notifies cfg80211 that the mesh peer candidate has been 3900 * detected, most likely via a beacon or, less likely, via a probe response. 3901 * cfg80211 then sends a notification to userspace. 3902 */ 3903 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 3904 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 3905 3906 /** 3907 * DOC: RFkill integration 3908 * 3909 * RFkill integration in cfg80211 is almost invisible to drivers, 3910 * as cfg80211 automatically registers an rfkill instance for each 3911 * wireless device it knows about. Soft kill is also translated 3912 * into disconnecting and turning all interfaces off, drivers are 3913 * expected to turn off the device when all interfaces are down. 3914 * 3915 * However, devices may have a hard RFkill line, in which case they 3916 * also need to interact with the rfkill subsystem, via cfg80211. 3917 * They can do this with a few helper functions documented here. 3918 */ 3919 3920 /** 3921 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 3922 * @wiphy: the wiphy 3923 * @blocked: block status 3924 */ 3925 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 3926 3927 /** 3928 * wiphy_rfkill_start_polling - start polling rfkill 3929 * @wiphy: the wiphy 3930 */ 3931 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 3932 3933 /** 3934 * wiphy_rfkill_stop_polling - stop polling rfkill 3935 * @wiphy: the wiphy 3936 */ 3937 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 3938 3939 /** 3940 * DOC: Vendor commands 3941 * 3942 * Occasionally, there are special protocol or firmware features that 3943 * can't be implemented very openly. For this and similar cases, the 3944 * vendor command functionality allows implementing the features with 3945 * (typically closed-source) userspace and firmware, using nl80211 as 3946 * the configuration mechanism. 3947 * 3948 * A driver supporting vendor commands must register them as an array 3949 * in struct wiphy, with handlers for each one, each command has an 3950 * OUI and sub command ID to identify it. 3951 * 3952 * Note that this feature should not be (ab)used to implement protocol 3953 * features that could openly be shared across drivers. In particular, 3954 * it must never be required to use vendor commands to implement any 3955 * "normal" functionality that higher-level userspace like connection 3956 * managers etc. need. 3957 */ 3958 3959 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 3960 enum nl80211_commands cmd, 3961 enum nl80211_attrs attr, 3962 int approxlen); 3963 3964 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 3965 enum nl80211_commands cmd, 3966 enum nl80211_attrs attr, 3967 int vendor_event_idx, 3968 int approxlen, gfp_t gfp); 3969 3970 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp); 3971 3972 /** 3973 * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply 3974 * @wiphy: the wiphy 3975 * @approxlen: an upper bound of the length of the data that will 3976 * be put into the skb 3977 * 3978 * This function allocates and pre-fills an skb for a reply to 3979 * a vendor command. Since it is intended for a reply, calling 3980 * it outside of a vendor command's doit() operation is invalid. 3981 * 3982 * The returned skb is pre-filled with some identifying data in 3983 * a way that any data that is put into the skb (with skb_put(), 3984 * nla_put() or similar) will end up being within the 3985 * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done 3986 * with the skb is adding data for the corresponding userspace tool 3987 * which can then read that data out of the vendor data attribute. 3988 * You must not modify the skb in any other way. 3989 * 3990 * When done, call cfg80211_vendor_cmd_reply() with the skb and return 3991 * its error code as the result of the doit() operation. 3992 * 3993 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 3994 */ 3995 static inline struct sk_buff * 3996 cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 3997 { 3998 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR, 3999 NL80211_ATTR_VENDOR_DATA, approxlen); 4000 } 4001 4002 /** 4003 * cfg80211_vendor_cmd_reply - send the reply skb 4004 * @skb: The skb, must have been allocated with 4005 * cfg80211_vendor_cmd_alloc_reply_skb() 4006 * 4007 * Since calling this function will usually be the last thing 4008 * before returning from the vendor command doit() you should 4009 * return the error code. Note that this function consumes the 4010 * skb regardless of the return value. 4011 * 4012 * Return: An error code or 0 on success. 4013 */ 4014 int cfg80211_vendor_cmd_reply(struct sk_buff *skb); 4015 4016 /** 4017 * cfg80211_vendor_event_alloc - allocate vendor-specific event skb 4018 * @wiphy: the wiphy 4019 * @event_idx: index of the vendor event in the wiphy's vendor_events 4020 * @approxlen: an upper bound of the length of the data that will 4021 * be put into the skb 4022 * @gfp: allocation flags 4023 * 4024 * This function allocates and pre-fills an skb for an event on the 4025 * vendor-specific multicast group. 4026 * 4027 * When done filling the skb, call cfg80211_vendor_event() with the 4028 * skb to send the event. 4029 * 4030 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4031 */ 4032 static inline struct sk_buff * 4033 cfg80211_vendor_event_alloc(struct wiphy *wiphy, int approxlen, 4034 int event_idx, gfp_t gfp) 4035 { 4036 return __cfg80211_alloc_event_skb(wiphy, NL80211_CMD_VENDOR, 4037 NL80211_ATTR_VENDOR_DATA, 4038 event_idx, approxlen, gfp); 4039 } 4040 4041 /** 4042 * cfg80211_vendor_event - send the event 4043 * @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc() 4044 * @gfp: allocation flags 4045 * 4046 * This function sends the given @skb, which must have been allocated 4047 * by cfg80211_vendor_event_alloc(), as an event. It always consumes it. 4048 */ 4049 static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp) 4050 { 4051 __cfg80211_send_event_skb(skb, gfp); 4052 } 4053 4054 #ifdef CONFIG_NL80211_TESTMODE 4055 /** 4056 * DOC: Test mode 4057 * 4058 * Test mode is a set of utility functions to allow drivers to 4059 * interact with driver-specific tools to aid, for instance, 4060 * factory programming. 4061 * 4062 * This chapter describes how drivers interact with it, for more 4063 * information see the nl80211 book's chapter on it. 4064 */ 4065 4066 /** 4067 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 4068 * @wiphy: the wiphy 4069 * @approxlen: an upper bound of the length of the data that will 4070 * be put into the skb 4071 * 4072 * This function allocates and pre-fills an skb for a reply to 4073 * the testmode command. Since it is intended for a reply, calling 4074 * it outside of the @testmode_cmd operation is invalid. 4075 * 4076 * The returned skb is pre-filled with the wiphy index and set up in 4077 * a way that any data that is put into the skb (with skb_put(), 4078 * nla_put() or similar) will end up being within the 4079 * %NL80211_ATTR_TESTDATA attribute, so all that needs to be done 4080 * with the skb is adding data for the corresponding userspace tool 4081 * which can then read that data out of the testdata attribute. You 4082 * must not modify the skb in any other way. 4083 * 4084 * When done, call cfg80211_testmode_reply() with the skb and return 4085 * its error code as the result of the @testmode_cmd operation. 4086 * 4087 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4088 */ 4089 static inline struct sk_buff * 4090 cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4091 { 4092 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE, 4093 NL80211_ATTR_TESTDATA, approxlen); 4094 } 4095 4096 /** 4097 * cfg80211_testmode_reply - send the reply skb 4098 * @skb: The skb, must have been allocated with 4099 * cfg80211_testmode_alloc_reply_skb() 4100 * 4101 * Since calling this function will usually be the last thing 4102 * before returning from the @testmode_cmd you should return 4103 * the error code. Note that this function consumes the skb 4104 * regardless of the return value. 4105 * 4106 * Return: An error code or 0 on success. 4107 */ 4108 static inline int cfg80211_testmode_reply(struct sk_buff *skb) 4109 { 4110 return cfg80211_vendor_cmd_reply(skb); 4111 } 4112 4113 /** 4114 * cfg80211_testmode_alloc_event_skb - allocate testmode event 4115 * @wiphy: the wiphy 4116 * @approxlen: an upper bound of the length of the data that will 4117 * be put into the skb 4118 * @gfp: allocation flags 4119 * 4120 * This function allocates and pre-fills an skb for an event on the 4121 * testmode multicast group. 4122 * 4123 * The returned skb is set up in the same way as with 4124 * cfg80211_testmode_alloc_reply_skb() but prepared for an event. As 4125 * there, you should simply add data to it that will then end up in the 4126 * %NL80211_ATTR_TESTDATA attribute. Again, you must not modify the skb 4127 * in any other way. 4128 * 4129 * When done filling the skb, call cfg80211_testmode_event() with the 4130 * skb to send the event. 4131 * 4132 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4133 */ 4134 static inline struct sk_buff * 4135 cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp) 4136 { 4137 return __cfg80211_alloc_event_skb(wiphy, NL80211_CMD_TESTMODE, 4138 NL80211_ATTR_TESTDATA, -1, 4139 approxlen, gfp); 4140 } 4141 4142 /** 4143 * cfg80211_testmode_event - send the event 4144 * @skb: The skb, must have been allocated with 4145 * cfg80211_testmode_alloc_event_skb() 4146 * @gfp: allocation flags 4147 * 4148 * This function sends the given @skb, which must have been allocated 4149 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 4150 * consumes it. 4151 */ 4152 static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 4153 { 4154 __cfg80211_send_event_skb(skb, gfp); 4155 } 4156 4157 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 4158 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 4159 #else 4160 #define CFG80211_TESTMODE_CMD(cmd) 4161 #define CFG80211_TESTMODE_DUMP(cmd) 4162 #endif 4163 4164 /** 4165 * cfg80211_connect_result - notify cfg80211 of connection result 4166 * 4167 * @dev: network device 4168 * @bssid: the BSSID of the AP 4169 * @req_ie: association request IEs (maybe be %NULL) 4170 * @req_ie_len: association request IEs length 4171 * @resp_ie: association response IEs (may be %NULL) 4172 * @resp_ie_len: assoc response IEs length 4173 * @status: status code, 0 for successful connection, use 4174 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 4175 * the real status code for failures. 4176 * @gfp: allocation flags 4177 * 4178 * It should be called by the underlying driver whenever connect() has 4179 * succeeded. 4180 */ 4181 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 4182 const u8 *req_ie, size_t req_ie_len, 4183 const u8 *resp_ie, size_t resp_ie_len, 4184 u16 status, gfp_t gfp); 4185 4186 /** 4187 * cfg80211_roamed - notify cfg80211 of roaming 4188 * 4189 * @dev: network device 4190 * @channel: the channel of the new AP 4191 * @bssid: the BSSID of the new AP 4192 * @req_ie: association request IEs (maybe be %NULL) 4193 * @req_ie_len: association request IEs length 4194 * @resp_ie: association response IEs (may be %NULL) 4195 * @resp_ie_len: assoc response IEs length 4196 * @gfp: allocation flags 4197 * 4198 * It should be called by the underlying driver whenever it roamed 4199 * from one AP to another while connected. 4200 */ 4201 void cfg80211_roamed(struct net_device *dev, 4202 struct ieee80211_channel *channel, 4203 const u8 *bssid, 4204 const u8 *req_ie, size_t req_ie_len, 4205 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4206 4207 /** 4208 * cfg80211_roamed_bss - notify cfg80211 of roaming 4209 * 4210 * @dev: network device 4211 * @bss: entry of bss to which STA got roamed 4212 * @req_ie: association request IEs (maybe be %NULL) 4213 * @req_ie_len: association request IEs length 4214 * @resp_ie: association response IEs (may be %NULL) 4215 * @resp_ie_len: assoc response IEs length 4216 * @gfp: allocation flags 4217 * 4218 * This is just a wrapper to notify cfg80211 of roaming event with driver 4219 * passing bss to avoid a race in timeout of the bss entry. It should be 4220 * called by the underlying driver whenever it roamed from one AP to another 4221 * while connected. Drivers which have roaming implemented in firmware 4222 * may use this function to avoid a race in bss entry timeout where the bss 4223 * entry of the new AP is seen in the driver, but gets timed out by the time 4224 * it is accessed in __cfg80211_roamed() due to delay in scheduling 4225 * rdev->event_work. In case of any failures, the reference is released 4226 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 4227 * it will be released while diconneting from the current bss. 4228 */ 4229 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 4230 const u8 *req_ie, size_t req_ie_len, 4231 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4232 4233 /** 4234 * cfg80211_disconnected - notify cfg80211 that connection was dropped 4235 * 4236 * @dev: network device 4237 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 4238 * @ie_len: length of IEs 4239 * @reason: reason code for the disconnection, set it to 0 if unknown 4240 * @gfp: allocation flags 4241 * 4242 * After it calls this function, the driver should enter an idle state 4243 * and not try to connect to any AP any more. 4244 */ 4245 void cfg80211_disconnected(struct net_device *dev, u16 reason, 4246 u8 *ie, size_t ie_len, gfp_t gfp); 4247 4248 /** 4249 * cfg80211_ready_on_channel - notification of remain_on_channel start 4250 * @wdev: wireless device 4251 * @cookie: the request cookie 4252 * @chan: The current channel (from remain_on_channel request) 4253 * @duration: Duration in milliseconds that the driver intents to remain on the 4254 * channel 4255 * @gfp: allocation flags 4256 */ 4257 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 4258 struct ieee80211_channel *chan, 4259 unsigned int duration, gfp_t gfp); 4260 4261 /** 4262 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 4263 * @wdev: wireless device 4264 * @cookie: the request cookie 4265 * @chan: The current channel (from remain_on_channel request) 4266 * @gfp: allocation flags 4267 */ 4268 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 4269 struct ieee80211_channel *chan, 4270 gfp_t gfp); 4271 4272 4273 /** 4274 * cfg80211_new_sta - notify userspace about station 4275 * 4276 * @dev: the netdev 4277 * @mac_addr: the station's address 4278 * @sinfo: the station information 4279 * @gfp: allocation flags 4280 */ 4281 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 4282 struct station_info *sinfo, gfp_t gfp); 4283 4284 /** 4285 * cfg80211_del_sta - notify userspace about deletion of a station 4286 * 4287 * @dev: the netdev 4288 * @mac_addr: the station's address 4289 * @gfp: allocation flags 4290 */ 4291 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp); 4292 4293 /** 4294 * cfg80211_conn_failed - connection request failed notification 4295 * 4296 * @dev: the netdev 4297 * @mac_addr: the station's address 4298 * @reason: the reason for connection failure 4299 * @gfp: allocation flags 4300 * 4301 * Whenever a station tries to connect to an AP and if the station 4302 * could not connect to the AP as the AP has rejected the connection 4303 * for some reasons, this function is called. 4304 * 4305 * The reason for connection failure can be any of the value from 4306 * nl80211_connect_failed_reason enum 4307 */ 4308 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 4309 enum nl80211_connect_failed_reason reason, 4310 gfp_t gfp); 4311 4312 /** 4313 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 4314 * @wdev: wireless device receiving the frame 4315 * @freq: Frequency on which the frame was received in MHz 4316 * @sig_dbm: signal strength in mBm, or 0 if unknown 4317 * @buf: Management frame (header + body) 4318 * @len: length of the frame data 4319 * @flags: flags, as defined in enum nl80211_rxmgmt_flags 4320 * @gfp: context flags 4321 * 4322 * This function is called whenever an Action frame is received for a station 4323 * mode interface, but is not processed in kernel. 4324 * 4325 * Return: %true if a user space application has registered for this frame. 4326 * For action frames, that makes it responsible for rejecting unrecognized 4327 * action frames; %false otherwise, in which case for action frames the 4328 * driver is responsible for rejecting the frame. 4329 */ 4330 bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm, 4331 const u8 *buf, size_t len, u32 flags, gfp_t gfp); 4332 4333 /** 4334 * cfg80211_mgmt_tx_status - notification of TX status for management frame 4335 * @wdev: wireless device receiving the frame 4336 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 4337 * @buf: Management frame (header + body) 4338 * @len: length of the frame data 4339 * @ack: Whether frame was acknowledged 4340 * @gfp: context flags 4341 * 4342 * This function is called whenever a management frame was requested to be 4343 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 4344 * transmission attempt. 4345 */ 4346 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 4347 const u8 *buf, size_t len, bool ack, gfp_t gfp); 4348 4349 4350 /** 4351 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 4352 * @dev: network device 4353 * @rssi_event: the triggered RSSI event 4354 * @gfp: context flags 4355 * 4356 * This function is called when a configured connection quality monitoring 4357 * rssi threshold reached event occurs. 4358 */ 4359 void cfg80211_cqm_rssi_notify(struct net_device *dev, 4360 enum nl80211_cqm_rssi_threshold_event rssi_event, 4361 gfp_t gfp); 4362 4363 /** 4364 * cfg80211_radar_event - radar detection event 4365 * @wiphy: the wiphy 4366 * @chandef: chandef for the current channel 4367 * @gfp: context flags 4368 * 4369 * This function is called when a radar is detected on the current chanenl. 4370 */ 4371 void cfg80211_radar_event(struct wiphy *wiphy, 4372 struct cfg80211_chan_def *chandef, gfp_t gfp); 4373 4374 /** 4375 * cfg80211_cac_event - Channel availability check (CAC) event 4376 * @netdev: network device 4377 * @chandef: chandef for the current channel 4378 * @event: type of event 4379 * @gfp: context flags 4380 * 4381 * This function is called when a Channel availability check (CAC) is finished 4382 * or aborted. This must be called to notify the completion of a CAC process, 4383 * also by full-MAC drivers. 4384 */ 4385 void cfg80211_cac_event(struct net_device *netdev, 4386 const struct cfg80211_chan_def *chandef, 4387 enum nl80211_radar_event event, gfp_t gfp); 4388 4389 4390 /** 4391 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 4392 * @dev: network device 4393 * @peer: peer's MAC address 4394 * @num_packets: how many packets were lost -- should be a fixed threshold 4395 * but probably no less than maybe 50, or maybe a throughput dependent 4396 * threshold (to account for temporary interference) 4397 * @gfp: context flags 4398 */ 4399 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 4400 const u8 *peer, u32 num_packets, gfp_t gfp); 4401 4402 /** 4403 * cfg80211_cqm_txe_notify - TX error rate event 4404 * @dev: network device 4405 * @peer: peer's MAC address 4406 * @num_packets: how many packets were lost 4407 * @rate: % of packets which failed transmission 4408 * @intvl: interval (in s) over which the TX failure threshold was breached. 4409 * @gfp: context flags 4410 * 4411 * Notify userspace when configured % TX failures over number of packets in a 4412 * given interval is exceeded. 4413 */ 4414 void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer, 4415 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp); 4416 4417 /** 4418 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 4419 * @dev: network device 4420 * @bssid: BSSID of AP (to avoid races) 4421 * @replay_ctr: new replay counter 4422 * @gfp: allocation flags 4423 */ 4424 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 4425 const u8 *replay_ctr, gfp_t gfp); 4426 4427 /** 4428 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 4429 * @dev: network device 4430 * @index: candidate index (the smaller the index, the higher the priority) 4431 * @bssid: BSSID of AP 4432 * @preauth: Whether AP advertises support for RSN pre-authentication 4433 * @gfp: allocation flags 4434 */ 4435 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 4436 const u8 *bssid, bool preauth, gfp_t gfp); 4437 4438 /** 4439 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 4440 * @dev: The device the frame matched to 4441 * @addr: the transmitter address 4442 * @gfp: context flags 4443 * 4444 * This function is used in AP mode (only!) to inform userspace that 4445 * a spurious class 3 frame was received, to be able to deauth the 4446 * sender. 4447 * Return: %true if the frame was passed to userspace (or this failed 4448 * for a reason other than not having a subscription.) 4449 */ 4450 bool cfg80211_rx_spurious_frame(struct net_device *dev, 4451 const u8 *addr, gfp_t gfp); 4452 4453 /** 4454 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 4455 * @dev: The device the frame matched to 4456 * @addr: the transmitter address 4457 * @gfp: context flags 4458 * 4459 * This function is used in AP mode (only!) to inform userspace that 4460 * an associated station sent a 4addr frame but that wasn't expected. 4461 * It is allowed and desirable to send this event only once for each 4462 * station to avoid event flooding. 4463 * Return: %true if the frame was passed to userspace (or this failed 4464 * for a reason other than not having a subscription.) 4465 */ 4466 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 4467 const u8 *addr, gfp_t gfp); 4468 4469 /** 4470 * cfg80211_probe_status - notify userspace about probe status 4471 * @dev: the device the probe was sent on 4472 * @addr: the address of the peer 4473 * @cookie: the cookie filled in @probe_client previously 4474 * @acked: indicates whether probe was acked or not 4475 * @gfp: allocation flags 4476 */ 4477 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 4478 u64 cookie, bool acked, gfp_t gfp); 4479 4480 /** 4481 * cfg80211_report_obss_beacon - report beacon from other APs 4482 * @wiphy: The wiphy that received the beacon 4483 * @frame: the frame 4484 * @len: length of the frame 4485 * @freq: frequency the frame was received on 4486 * @sig_dbm: signal strength in mBm, or 0 if unknown 4487 * 4488 * Use this function to report to userspace when a beacon was 4489 * received. It is not useful to call this when there is no 4490 * netdev that is in AP/GO mode. 4491 */ 4492 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 4493 const u8 *frame, size_t len, 4494 int freq, int sig_dbm); 4495 4496 /** 4497 * cfg80211_reg_can_beacon - check if beaconing is allowed 4498 * @wiphy: the wiphy 4499 * @chandef: the channel definition 4500 * 4501 * Return: %true if there is no secondary channel or the secondary channel(s) 4502 * can be used for beaconing (i.e. is not a radar channel etc.) 4503 */ 4504 bool cfg80211_reg_can_beacon(struct wiphy *wiphy, 4505 struct cfg80211_chan_def *chandef); 4506 4507 /* 4508 * cfg80211_ch_switch_notify - update wdev channel and notify userspace 4509 * @dev: the device which switched channels 4510 * @chandef: the new channel definition 4511 * 4512 * Caller must acquire wdev_lock, therefore must only be called from sleepable 4513 * driver context! 4514 */ 4515 void cfg80211_ch_switch_notify(struct net_device *dev, 4516 struct cfg80211_chan_def *chandef); 4517 4518 /** 4519 * ieee80211_operating_class_to_band - convert operating class to band 4520 * 4521 * @operating_class: the operating class to convert 4522 * @band: band pointer to fill 4523 * 4524 * Returns %true if the conversion was successful, %false otherwise. 4525 */ 4526 bool ieee80211_operating_class_to_band(u8 operating_class, 4527 enum ieee80211_band *band); 4528 4529 /* 4530 * cfg80211_tdls_oper_request - request userspace to perform TDLS operation 4531 * @dev: the device on which the operation is requested 4532 * @peer: the MAC address of the peer device 4533 * @oper: the requested TDLS operation (NL80211_TDLS_SETUP or 4534 * NL80211_TDLS_TEARDOWN) 4535 * @reason_code: the reason code for teardown request 4536 * @gfp: allocation flags 4537 * 4538 * This function is used to request userspace to perform TDLS operation that 4539 * requires knowledge of keys, i.e., link setup or teardown when the AP 4540 * connection uses encryption. This is optional mechanism for the driver to use 4541 * if it can automatically determine when a TDLS link could be useful (e.g., 4542 * based on traffic and signal strength for a peer). 4543 */ 4544 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 4545 enum nl80211_tdls_operation oper, 4546 u16 reason_code, gfp_t gfp); 4547 4548 /* 4549 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units) 4550 * @rate: given rate_info to calculate bitrate from 4551 * 4552 * return 0 if MCS index >= 32 4553 */ 4554 u32 cfg80211_calculate_bitrate(struct rate_info *rate); 4555 4556 /** 4557 * cfg80211_unregister_wdev - remove the given wdev 4558 * @wdev: struct wireless_dev to remove 4559 * 4560 * Call this function only for wdevs that have no netdev assigned, 4561 * e.g. P2P Devices. It removes the device from the list so that 4562 * it can no longer be used. It is necessary to call this function 4563 * even when cfg80211 requests the removal of the interface by 4564 * calling the del_virtual_intf() callback. The function must also 4565 * be called when the driver wishes to unregister the wdev, e.g. 4566 * when the device is unbound from the driver. 4567 * 4568 * Requires the RTNL to be held. 4569 */ 4570 void cfg80211_unregister_wdev(struct wireless_dev *wdev); 4571 4572 /** 4573 * struct cfg80211_ft_event - FT Information Elements 4574 * @ies: FT IEs 4575 * @ies_len: length of the FT IE in bytes 4576 * @target_ap: target AP's MAC address 4577 * @ric_ies: RIC IE 4578 * @ric_ies_len: length of the RIC IE in bytes 4579 */ 4580 struct cfg80211_ft_event_params { 4581 const u8 *ies; 4582 size_t ies_len; 4583 const u8 *target_ap; 4584 const u8 *ric_ies; 4585 size_t ric_ies_len; 4586 }; 4587 4588 /** 4589 * cfg80211_ft_event - notify userspace about FT IE and RIC IE 4590 * @netdev: network device 4591 * @ft_event: IE information 4592 */ 4593 void cfg80211_ft_event(struct net_device *netdev, 4594 struct cfg80211_ft_event_params *ft_event); 4595 4596 /** 4597 * cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer 4598 * @ies: the input IE buffer 4599 * @len: the input length 4600 * @attr: the attribute ID to find 4601 * @buf: output buffer, can be %NULL if the data isn't needed, e.g. 4602 * if the function is only called to get the needed buffer size 4603 * @bufsize: size of the output buffer 4604 * 4605 * The function finds a given P2P attribute in the (vendor) IEs and 4606 * copies its contents to the given buffer. 4607 * 4608 * Return: A negative error code (-%EILSEQ or -%ENOENT) if the data is 4609 * malformed or the attribute can't be found (respectively), or the 4610 * length of the found attribute (which can be zero). 4611 */ 4612 int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len, 4613 enum ieee80211_p2p_attr_id attr, 4614 u8 *buf, unsigned int bufsize); 4615 4616 /** 4617 * cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN 4618 * @wdev: the wireless device reporting the wakeup 4619 * @wakeup: the wakeup report 4620 * @gfp: allocation flags 4621 * 4622 * This function reports that the given device woke up. If it 4623 * caused the wakeup, report the reason(s), otherwise you may 4624 * pass %NULL as the @wakeup parameter to advertise that something 4625 * else caused the wakeup. 4626 */ 4627 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 4628 struct cfg80211_wowlan_wakeup *wakeup, 4629 gfp_t gfp); 4630 4631 /** 4632 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver. 4633 * 4634 * @wdev: the wireless device for which critical protocol is stopped. 4635 * @gfp: allocation flags 4636 * 4637 * This function can be called by the driver to indicate it has reverted 4638 * operation back to normal. One reason could be that the duration given 4639 * by .crit_proto_start() has expired. 4640 */ 4641 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp); 4642 4643 /** 4644 * ieee80211_get_num_supported_channels - get number of channels device has 4645 * @wiphy: the wiphy 4646 * 4647 * Return: the number of channels supported by the device. 4648 */ 4649 unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy); 4650 4651 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 4652 4653 /* wiphy_printk helpers, similar to dev_printk */ 4654 4655 #define wiphy_printk(level, wiphy, format, args...) \ 4656 dev_printk(level, &(wiphy)->dev, format, ##args) 4657 #define wiphy_emerg(wiphy, format, args...) \ 4658 dev_emerg(&(wiphy)->dev, format, ##args) 4659 #define wiphy_alert(wiphy, format, args...) \ 4660 dev_alert(&(wiphy)->dev, format, ##args) 4661 #define wiphy_crit(wiphy, format, args...) \ 4662 dev_crit(&(wiphy)->dev, format, ##args) 4663 #define wiphy_err(wiphy, format, args...) \ 4664 dev_err(&(wiphy)->dev, format, ##args) 4665 #define wiphy_warn(wiphy, format, args...) \ 4666 dev_warn(&(wiphy)->dev, format, ##args) 4667 #define wiphy_notice(wiphy, format, args...) \ 4668 dev_notice(&(wiphy)->dev, format, ##args) 4669 #define wiphy_info(wiphy, format, args...) \ 4670 dev_info(&(wiphy)->dev, format, ##args) 4671 4672 #define wiphy_debug(wiphy, format, args...) \ 4673 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 4674 4675 #define wiphy_dbg(wiphy, format, args...) \ 4676 dev_dbg(&(wiphy)->dev, format, ##args) 4677 4678 #if defined(VERBOSE_DEBUG) 4679 #define wiphy_vdbg wiphy_dbg 4680 #else 4681 #define wiphy_vdbg(wiphy, format, args...) \ 4682 ({ \ 4683 if (0) \ 4684 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 4685 0; \ 4686 }) 4687 #endif 4688 4689 /* 4690 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 4691 * of using a WARN/WARN_ON to get the message out, including the 4692 * file/line information and a backtrace. 4693 */ 4694 #define wiphy_WARN(wiphy, format, args...) \ 4695 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 4696 4697 #endif /* __NET_CFG80211_H */ 4698