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 * Copyright 2013-2014 Intel Mobile Communications GmbH 8 * Copyright 2015 Intel Deutschland GmbH 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #include <linux/netdevice.h> 16 #include <linux/debugfs.h> 17 #include <linux/list.h> 18 #include <linux/bug.h> 19 #include <linux/netlink.h> 20 #include <linux/skbuff.h> 21 #include <linux/nl80211.h> 22 #include <linux/if_ether.h> 23 #include <linux/ieee80211.h> 24 #include <linux/net.h> 25 #include <net/regulatory.h> 26 27 /** 28 * DOC: Introduction 29 * 30 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 31 * userspace and drivers, and offers some utility functionality associated 32 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 33 * by all modern wireless drivers in Linux, so that they offer a consistent 34 * API through nl80211. For backward compatibility, cfg80211 also offers 35 * wireless extensions to userspace, but hides them from drivers completely. 36 * 37 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 38 * use restrictions. 39 */ 40 41 42 /** 43 * DOC: Device registration 44 * 45 * In order for a driver to use cfg80211, it must register the hardware device 46 * with cfg80211. This happens through a number of hardware capability structs 47 * described below. 48 * 49 * The fundamental structure for each device is the 'wiphy', of which each 50 * instance describes a physical wireless device connected to the system. Each 51 * such wiphy can have zero, one, or many virtual interfaces associated with 52 * it, which need to be identified as such by pointing the network interface's 53 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 54 * the wireless part of the interface, normally this struct is embedded in the 55 * network interface's private data area. Drivers can optionally allow creating 56 * or destroying virtual interfaces on the fly, but without at least one or the 57 * ability to create some the wireless device isn't useful. 58 * 59 * Each wiphy structure contains device capability information, and also has 60 * a pointer to the various operations the driver offers. The definitions and 61 * structures here describe these capabilities in detail. 62 */ 63 64 struct wiphy; 65 66 /* 67 * wireless hardware capability structures 68 */ 69 70 /** 71 * enum ieee80211_band - supported frequency bands 72 * 73 * The bands are assigned this way because the supported 74 * bitrates differ in these bands. 75 * 76 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 77 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 78 * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz) 79 * @IEEE80211_NUM_BANDS: number of defined bands 80 */ 81 enum ieee80211_band { 82 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 83 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 84 IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ, 85 86 /* keep last */ 87 IEEE80211_NUM_BANDS 88 }; 89 90 /** 91 * enum ieee80211_channel_flags - channel flags 92 * 93 * Channel flags set by the regulatory control code. 94 * 95 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 96 * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes 97 * sending probe requests or beaconing. 98 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 99 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 100 * is not permitted. 101 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 102 * is not permitted. 103 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel. 104 * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band, 105 * this flag indicates that an 80 MHz channel cannot use this 106 * channel as the control or any of the secondary channels. 107 * This may be due to the driver or due to regulatory bandwidth 108 * restrictions. 109 * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band, 110 * this flag indicates that an 160 MHz channel cannot use this 111 * channel as the control or any of the secondary channels. 112 * This may be due to the driver or due to regulatory bandwidth 113 * restrictions. 114 * @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY 115 * @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT 116 * @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted 117 * on this channel. 118 * @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted 119 * on this channel. 120 * 121 */ 122 enum ieee80211_channel_flags { 123 IEEE80211_CHAN_DISABLED = 1<<0, 124 IEEE80211_CHAN_NO_IR = 1<<1, 125 /* hole at 1<<2 */ 126 IEEE80211_CHAN_RADAR = 1<<3, 127 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 128 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 129 IEEE80211_CHAN_NO_OFDM = 1<<6, 130 IEEE80211_CHAN_NO_80MHZ = 1<<7, 131 IEEE80211_CHAN_NO_160MHZ = 1<<8, 132 IEEE80211_CHAN_INDOOR_ONLY = 1<<9, 133 IEEE80211_CHAN_IR_CONCURRENT = 1<<10, 134 IEEE80211_CHAN_NO_20MHZ = 1<<11, 135 IEEE80211_CHAN_NO_10MHZ = 1<<12, 136 }; 137 138 #define IEEE80211_CHAN_NO_HT40 \ 139 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 140 141 #define IEEE80211_DFS_MIN_CAC_TIME_MS 60000 142 #define IEEE80211_DFS_MIN_NOP_TIME_MS (30 * 60 * 1000) 143 144 /** 145 * struct ieee80211_channel - channel definition 146 * 147 * This structure describes a single channel for use 148 * with cfg80211. 149 * 150 * @center_freq: center frequency in MHz 151 * @hw_value: hardware-specific value for the channel 152 * @flags: channel flags from &enum ieee80211_channel_flags. 153 * @orig_flags: channel flags at registration time, used by regulatory 154 * code to support devices with additional restrictions 155 * @band: band this channel belongs to. 156 * @max_antenna_gain: maximum antenna gain in dBi 157 * @max_power: maximum transmission power (in dBm) 158 * @max_reg_power: maximum regulatory transmission power (in dBm) 159 * @beacon_found: helper to regulatory code to indicate when a beacon 160 * has been found on this channel. Use regulatory_hint_found_beacon() 161 * to enable this, this is useful only on 5 GHz band. 162 * @orig_mag: internal use 163 * @orig_mpwr: internal use 164 * @dfs_state: current state of this channel. Only relevant if radar is required 165 * on this channel. 166 * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered. 167 * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels. 168 */ 169 struct ieee80211_channel { 170 enum ieee80211_band band; 171 u16 center_freq; 172 u16 hw_value; 173 u32 flags; 174 int max_antenna_gain; 175 int max_power; 176 int max_reg_power; 177 bool beacon_found; 178 u32 orig_flags; 179 int orig_mag, orig_mpwr; 180 enum nl80211_dfs_state dfs_state; 181 unsigned long dfs_state_entered; 182 unsigned int dfs_cac_ms; 183 }; 184 185 /** 186 * enum ieee80211_rate_flags - rate flags 187 * 188 * Hardware/specification flags for rates. These are structured 189 * in a way that allows using the same bitrate structure for 190 * different bands/PHY modes. 191 * 192 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 193 * preamble on this bitrate; only relevant in 2.4GHz band and 194 * with CCK rates. 195 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 196 * when used with 802.11a (on the 5 GHz band); filled by the 197 * core code when registering the wiphy. 198 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 199 * when used with 802.11b (on the 2.4 GHz band); filled by the 200 * core code when registering the wiphy. 201 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 202 * when used with 802.11g (on the 2.4 GHz band); filled by the 203 * core code when registering the wiphy. 204 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 205 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode 206 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode 207 */ 208 enum ieee80211_rate_flags { 209 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 210 IEEE80211_RATE_MANDATORY_A = 1<<1, 211 IEEE80211_RATE_MANDATORY_B = 1<<2, 212 IEEE80211_RATE_MANDATORY_G = 1<<3, 213 IEEE80211_RATE_ERP_G = 1<<4, 214 IEEE80211_RATE_SUPPORTS_5MHZ = 1<<5, 215 IEEE80211_RATE_SUPPORTS_10MHZ = 1<<6, 216 }; 217 218 /** 219 * enum ieee80211_bss_type - BSS type filter 220 * 221 * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS 222 * @IEEE80211_BSS_TYPE_PBSS: Personal BSS 223 * @IEEE80211_BSS_TYPE_IBSS: Independent BSS 224 * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS 225 * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type 226 */ 227 enum ieee80211_bss_type { 228 IEEE80211_BSS_TYPE_ESS, 229 IEEE80211_BSS_TYPE_PBSS, 230 IEEE80211_BSS_TYPE_IBSS, 231 IEEE80211_BSS_TYPE_MBSS, 232 IEEE80211_BSS_TYPE_ANY 233 }; 234 235 /** 236 * enum ieee80211_privacy - BSS privacy filter 237 * 238 * @IEEE80211_PRIVACY_ON: privacy bit set 239 * @IEEE80211_PRIVACY_OFF: privacy bit clear 240 * @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting 241 */ 242 enum ieee80211_privacy { 243 IEEE80211_PRIVACY_ON, 244 IEEE80211_PRIVACY_OFF, 245 IEEE80211_PRIVACY_ANY 246 }; 247 248 #define IEEE80211_PRIVACY(x) \ 249 ((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF) 250 251 /** 252 * struct ieee80211_rate - bitrate definition 253 * 254 * This structure describes a bitrate that an 802.11 PHY can 255 * operate with. The two values @hw_value and @hw_value_short 256 * are only for driver use when pointers to this structure are 257 * passed around. 258 * 259 * @flags: rate-specific flags 260 * @bitrate: bitrate in units of 100 Kbps 261 * @hw_value: driver/hardware value for this rate 262 * @hw_value_short: driver/hardware value for this rate when 263 * short preamble is used 264 */ 265 struct ieee80211_rate { 266 u32 flags; 267 u16 bitrate; 268 u16 hw_value, hw_value_short; 269 }; 270 271 /** 272 * struct ieee80211_sta_ht_cap - STA's HT capabilities 273 * 274 * This structure describes most essential parameters needed 275 * to describe 802.11n HT capabilities for an STA. 276 * 277 * @ht_supported: is HT supported by the STA 278 * @cap: HT capabilities map as described in 802.11n spec 279 * @ampdu_factor: Maximum A-MPDU length factor 280 * @ampdu_density: Minimum A-MPDU spacing 281 * @mcs: Supported MCS rates 282 */ 283 struct ieee80211_sta_ht_cap { 284 u16 cap; /* use IEEE80211_HT_CAP_ */ 285 bool ht_supported; 286 u8 ampdu_factor; 287 u8 ampdu_density; 288 struct ieee80211_mcs_info mcs; 289 }; 290 291 /** 292 * struct ieee80211_sta_vht_cap - STA's VHT capabilities 293 * 294 * This structure describes most essential parameters needed 295 * to describe 802.11ac VHT capabilities for an STA. 296 * 297 * @vht_supported: is VHT supported by the STA 298 * @cap: VHT capabilities map as described in 802.11ac spec 299 * @vht_mcs: Supported VHT MCS rates 300 */ 301 struct ieee80211_sta_vht_cap { 302 bool vht_supported; 303 u32 cap; /* use IEEE80211_VHT_CAP_ */ 304 struct ieee80211_vht_mcs_info vht_mcs; 305 }; 306 307 /** 308 * struct ieee80211_supported_band - frequency band definition 309 * 310 * This structure describes a frequency band a wiphy 311 * is able to operate in. 312 * 313 * @channels: Array of channels the hardware can operate in 314 * in this band. 315 * @band: the band this structure represents 316 * @n_channels: Number of channels in @channels 317 * @bitrates: Array of bitrates the hardware can operate with 318 * in this band. Must be sorted to give a valid "supported 319 * rates" IE, i.e. CCK rates first, then OFDM. 320 * @n_bitrates: Number of bitrates in @bitrates 321 * @ht_cap: HT capabilities in this band 322 * @vht_cap: VHT capabilities in this band 323 */ 324 struct ieee80211_supported_band { 325 struct ieee80211_channel *channels; 326 struct ieee80211_rate *bitrates; 327 enum ieee80211_band band; 328 int n_channels; 329 int n_bitrates; 330 struct ieee80211_sta_ht_cap ht_cap; 331 struct ieee80211_sta_vht_cap vht_cap; 332 }; 333 334 /* 335 * Wireless hardware/device configuration structures and methods 336 */ 337 338 /** 339 * DOC: Actions and configuration 340 * 341 * Each wireless device and each virtual interface offer a set of configuration 342 * operations and other actions that are invoked by userspace. Each of these 343 * actions is described in the operations structure, and the parameters these 344 * operations use are described separately. 345 * 346 * Additionally, some operations are asynchronous and expect to get status 347 * information via some functions that drivers need to call. 348 * 349 * Scanning and BSS list handling with its associated functionality is described 350 * in a separate chapter. 351 */ 352 353 /** 354 * struct vif_params - describes virtual interface parameters 355 * @use_4addr: use 4-address frames 356 * @macaddr: address to use for this virtual interface. 357 * If this parameter is set to zero address the driver may 358 * determine the address as needed. 359 * This feature is only fully supported by drivers that enable the 360 * %NL80211_FEATURE_MAC_ON_CREATE flag. Others may support creating 361 ** only p2p devices with specified MAC. 362 */ 363 struct vif_params { 364 int use_4addr; 365 u8 macaddr[ETH_ALEN]; 366 }; 367 368 /** 369 * struct key_params - key information 370 * 371 * Information about a key 372 * 373 * @key: key material 374 * @key_len: length of key material 375 * @cipher: cipher suite selector 376 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 377 * with the get_key() callback, must be in little endian, 378 * length given by @seq_len. 379 * @seq_len: length of @seq. 380 */ 381 struct key_params { 382 const u8 *key; 383 const u8 *seq; 384 int key_len; 385 int seq_len; 386 u32 cipher; 387 }; 388 389 /** 390 * struct cfg80211_chan_def - channel definition 391 * @chan: the (control) channel 392 * @width: channel width 393 * @center_freq1: center frequency of first segment 394 * @center_freq2: center frequency of second segment 395 * (only with 80+80 MHz) 396 */ 397 struct cfg80211_chan_def { 398 struct ieee80211_channel *chan; 399 enum nl80211_chan_width width; 400 u32 center_freq1; 401 u32 center_freq2; 402 }; 403 404 /** 405 * cfg80211_get_chandef_type - return old channel type from chandef 406 * @chandef: the channel definition 407 * 408 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given 409 * chandef, which must have a bandwidth allowing this conversion. 410 */ 411 static inline enum nl80211_channel_type 412 cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef) 413 { 414 switch (chandef->width) { 415 case NL80211_CHAN_WIDTH_20_NOHT: 416 return NL80211_CHAN_NO_HT; 417 case NL80211_CHAN_WIDTH_20: 418 return NL80211_CHAN_HT20; 419 case NL80211_CHAN_WIDTH_40: 420 if (chandef->center_freq1 > chandef->chan->center_freq) 421 return NL80211_CHAN_HT40PLUS; 422 return NL80211_CHAN_HT40MINUS; 423 default: 424 WARN_ON(1); 425 return NL80211_CHAN_NO_HT; 426 } 427 } 428 429 /** 430 * cfg80211_chandef_create - create channel definition using channel type 431 * @chandef: the channel definition struct to fill 432 * @channel: the control channel 433 * @chantype: the channel type 434 * 435 * Given a channel type, create a channel definition. 436 */ 437 void cfg80211_chandef_create(struct cfg80211_chan_def *chandef, 438 struct ieee80211_channel *channel, 439 enum nl80211_channel_type chantype); 440 441 /** 442 * cfg80211_chandef_identical - check if two channel definitions are identical 443 * @chandef1: first channel definition 444 * @chandef2: second channel definition 445 * 446 * Return: %true if the channels defined by the channel definitions are 447 * identical, %false otherwise. 448 */ 449 static inline bool 450 cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1, 451 const struct cfg80211_chan_def *chandef2) 452 { 453 return (chandef1->chan == chandef2->chan && 454 chandef1->width == chandef2->width && 455 chandef1->center_freq1 == chandef2->center_freq1 && 456 chandef1->center_freq2 == chandef2->center_freq2); 457 } 458 459 /** 460 * cfg80211_chandef_compatible - check if two channel definitions are compatible 461 * @chandef1: first channel definition 462 * @chandef2: second channel definition 463 * 464 * Return: %NULL if the given channel definitions are incompatible, 465 * chandef1 or chandef2 otherwise. 466 */ 467 const struct cfg80211_chan_def * 468 cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1, 469 const struct cfg80211_chan_def *chandef2); 470 471 /** 472 * cfg80211_chandef_valid - check if a channel definition is valid 473 * @chandef: the channel definition to check 474 * Return: %true if the channel definition is valid. %false otherwise. 475 */ 476 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef); 477 478 /** 479 * cfg80211_chandef_usable - check if secondary channels can be used 480 * @wiphy: the wiphy to validate against 481 * @chandef: the channel definition to check 482 * @prohibited_flags: the regulatory channel flags that must not be set 483 * Return: %true if secondary channels are usable. %false otherwise. 484 */ 485 bool cfg80211_chandef_usable(struct wiphy *wiphy, 486 const struct cfg80211_chan_def *chandef, 487 u32 prohibited_flags); 488 489 /** 490 * cfg80211_chandef_dfs_required - checks if radar detection is required 491 * @wiphy: the wiphy to validate against 492 * @chandef: the channel definition to check 493 * @iftype: the interface type as specified in &enum nl80211_iftype 494 * Returns: 495 * 1 if radar detection is required, 0 if it is not, < 0 on error 496 */ 497 int cfg80211_chandef_dfs_required(struct wiphy *wiphy, 498 const struct cfg80211_chan_def *chandef, 499 enum nl80211_iftype iftype); 500 501 /** 502 * ieee80211_chandef_rate_flags - returns rate flags for a channel 503 * 504 * In some channel types, not all rates may be used - for example CCK 505 * rates may not be used in 5/10 MHz channels. 506 * 507 * @chandef: channel definition for the channel 508 * 509 * Returns: rate flags which apply for this channel 510 */ 511 static inline enum ieee80211_rate_flags 512 ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef) 513 { 514 switch (chandef->width) { 515 case NL80211_CHAN_WIDTH_5: 516 return IEEE80211_RATE_SUPPORTS_5MHZ; 517 case NL80211_CHAN_WIDTH_10: 518 return IEEE80211_RATE_SUPPORTS_10MHZ; 519 default: 520 break; 521 } 522 return 0; 523 } 524 525 /** 526 * ieee80211_chandef_max_power - maximum transmission power for the chandef 527 * 528 * In some regulations, the transmit power may depend on the configured channel 529 * bandwidth which may be defined as dBm/MHz. This function returns the actual 530 * max_power for non-standard (20 MHz) channels. 531 * 532 * @chandef: channel definition for the channel 533 * 534 * Returns: maximum allowed transmission power in dBm for the chandef 535 */ 536 static inline int 537 ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef) 538 { 539 switch (chandef->width) { 540 case NL80211_CHAN_WIDTH_5: 541 return min(chandef->chan->max_reg_power - 6, 542 chandef->chan->max_power); 543 case NL80211_CHAN_WIDTH_10: 544 return min(chandef->chan->max_reg_power - 3, 545 chandef->chan->max_power); 546 default: 547 break; 548 } 549 return chandef->chan->max_power; 550 } 551 552 /** 553 * enum survey_info_flags - survey information flags 554 * 555 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 556 * @SURVEY_INFO_IN_USE: channel is currently being used 557 * @SURVEY_INFO_TIME: active time (in ms) was filled in 558 * @SURVEY_INFO_TIME_BUSY: busy time was filled in 559 * @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in 560 * @SURVEY_INFO_TIME_RX: receive time was filled in 561 * @SURVEY_INFO_TIME_TX: transmit time was filled in 562 * @SURVEY_INFO_TIME_SCAN: scan time was filled in 563 * 564 * Used by the driver to indicate which info in &struct survey_info 565 * it has filled in during the get_survey(). 566 */ 567 enum survey_info_flags { 568 SURVEY_INFO_NOISE_DBM = BIT(0), 569 SURVEY_INFO_IN_USE = BIT(1), 570 SURVEY_INFO_TIME = BIT(2), 571 SURVEY_INFO_TIME_BUSY = BIT(3), 572 SURVEY_INFO_TIME_EXT_BUSY = BIT(4), 573 SURVEY_INFO_TIME_RX = BIT(5), 574 SURVEY_INFO_TIME_TX = BIT(6), 575 SURVEY_INFO_TIME_SCAN = BIT(7), 576 }; 577 578 /** 579 * struct survey_info - channel survey response 580 * 581 * @channel: the channel this survey record reports, may be %NULL for a single 582 * record to report global statistics 583 * @filled: bitflag of flags from &enum survey_info_flags 584 * @noise: channel noise in dBm. This and all following fields are 585 * optional 586 * @time: amount of time in ms the radio was turn on (on the channel) 587 * @time_busy: amount of time the primary channel was sensed busy 588 * @time_ext_busy: amount of time the extension channel was sensed busy 589 * @time_rx: amount of time the radio spent receiving data 590 * @time_tx: amount of time the radio spent transmitting data 591 * @time_scan: amount of time the radio spent for scanning 592 * 593 * Used by dump_survey() to report back per-channel survey information. 594 * 595 * This structure can later be expanded with things like 596 * channel duty cycle etc. 597 */ 598 struct survey_info { 599 struct ieee80211_channel *channel; 600 u64 time; 601 u64 time_busy; 602 u64 time_ext_busy; 603 u64 time_rx; 604 u64 time_tx; 605 u64 time_scan; 606 u32 filled; 607 s8 noise; 608 }; 609 610 /** 611 * struct cfg80211_crypto_settings - Crypto settings 612 * @wpa_versions: indicates which, if any, WPA versions are enabled 613 * (from enum nl80211_wpa_versions) 614 * @cipher_group: group key cipher suite (or 0 if unset) 615 * @n_ciphers_pairwise: number of AP supported unicast ciphers 616 * @ciphers_pairwise: unicast key cipher suites 617 * @n_akm_suites: number of AKM suites 618 * @akm_suites: AKM suites 619 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 620 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 621 * required to assume that the port is unauthorized until authorized by 622 * user space. Otherwise, port is marked authorized by default. 623 * @control_port_ethertype: the control port protocol that should be 624 * allowed through even on unauthorized ports 625 * @control_port_no_encrypt: TRUE to prevent encryption of control port 626 * protocol frames. 627 */ 628 struct cfg80211_crypto_settings { 629 u32 wpa_versions; 630 u32 cipher_group; 631 int n_ciphers_pairwise; 632 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 633 int n_akm_suites; 634 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 635 bool control_port; 636 __be16 control_port_ethertype; 637 bool control_port_no_encrypt; 638 }; 639 640 /** 641 * struct cfg80211_beacon_data - beacon data 642 * @head: head portion of beacon (before TIM IE) 643 * or %NULL if not changed 644 * @tail: tail portion of beacon (after TIM IE) 645 * or %NULL if not changed 646 * @head_len: length of @head 647 * @tail_len: length of @tail 648 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL 649 * @beacon_ies_len: length of beacon_ies in octets 650 * @proberesp_ies: extra information element(s) to add into Probe Response 651 * frames or %NULL 652 * @proberesp_ies_len: length of proberesp_ies in octets 653 * @assocresp_ies: extra information element(s) to add into (Re)Association 654 * Response frames or %NULL 655 * @assocresp_ies_len: length of assocresp_ies in octets 656 * @probe_resp_len: length of probe response template (@probe_resp) 657 * @probe_resp: probe response template (AP mode only) 658 */ 659 struct cfg80211_beacon_data { 660 const u8 *head, *tail; 661 const u8 *beacon_ies; 662 const u8 *proberesp_ies; 663 const u8 *assocresp_ies; 664 const u8 *probe_resp; 665 666 size_t head_len, tail_len; 667 size_t beacon_ies_len; 668 size_t proberesp_ies_len; 669 size_t assocresp_ies_len; 670 size_t probe_resp_len; 671 }; 672 673 struct mac_address { 674 u8 addr[ETH_ALEN]; 675 }; 676 677 /** 678 * struct cfg80211_acl_data - Access control list data 679 * 680 * @acl_policy: ACL policy to be applied on the station's 681 * entry specified by mac_addr 682 * @n_acl_entries: Number of MAC address entries passed 683 * @mac_addrs: List of MAC addresses of stations to be used for ACL 684 */ 685 struct cfg80211_acl_data { 686 enum nl80211_acl_policy acl_policy; 687 int n_acl_entries; 688 689 /* Keep it last */ 690 struct mac_address mac_addrs[]; 691 }; 692 693 /** 694 * struct cfg80211_ap_settings - AP configuration 695 * 696 * Used to configure an AP interface. 697 * 698 * @chandef: defines the channel to use 699 * @beacon: beacon data 700 * @beacon_interval: beacon interval 701 * @dtim_period: DTIM period 702 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from 703 * user space) 704 * @ssid_len: length of @ssid 705 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames 706 * @crypto: crypto settings 707 * @privacy: the BSS uses privacy 708 * @auth_type: Authentication type (algorithm) 709 * @smps_mode: SMPS mode 710 * @inactivity_timeout: time in seconds to determine station's inactivity. 711 * @p2p_ctwindow: P2P CT Window 712 * @p2p_opp_ps: P2P opportunistic PS 713 * @acl: ACL configuration used by the drivers which has support for 714 * MAC address based access control 715 */ 716 struct cfg80211_ap_settings { 717 struct cfg80211_chan_def chandef; 718 719 struct cfg80211_beacon_data beacon; 720 721 int beacon_interval, dtim_period; 722 const u8 *ssid; 723 size_t ssid_len; 724 enum nl80211_hidden_ssid hidden_ssid; 725 struct cfg80211_crypto_settings crypto; 726 bool privacy; 727 enum nl80211_auth_type auth_type; 728 enum nl80211_smps_mode smps_mode; 729 int inactivity_timeout; 730 u8 p2p_ctwindow; 731 bool p2p_opp_ps; 732 const struct cfg80211_acl_data *acl; 733 }; 734 735 /** 736 * struct cfg80211_csa_settings - channel switch settings 737 * 738 * Used for channel switch 739 * 740 * @chandef: defines the channel to use after the switch 741 * @beacon_csa: beacon data while performing the switch 742 * @counter_offsets_beacon: offsets of the counters within the beacon (tail) 743 * @counter_offsets_presp: offsets of the counters within the probe response 744 * @n_counter_offsets_beacon: number of csa counters the beacon (tail) 745 * @n_counter_offsets_presp: number of csa counters in the probe response 746 * @beacon_after: beacon data to be used on the new channel 747 * @radar_required: whether radar detection is required on the new channel 748 * @block_tx: whether transmissions should be blocked while changing 749 * @count: number of beacons until switch 750 */ 751 struct cfg80211_csa_settings { 752 struct cfg80211_chan_def chandef; 753 struct cfg80211_beacon_data beacon_csa; 754 const u16 *counter_offsets_beacon; 755 const u16 *counter_offsets_presp; 756 unsigned int n_counter_offsets_beacon; 757 unsigned int n_counter_offsets_presp; 758 struct cfg80211_beacon_data beacon_after; 759 bool radar_required; 760 bool block_tx; 761 u8 count; 762 }; 763 764 /** 765 * enum station_parameters_apply_mask - station parameter values to apply 766 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp) 767 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability 768 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state 769 * 770 * Not all station parameters have in-band "no change" signalling, 771 * for those that don't these flags will are used. 772 */ 773 enum station_parameters_apply_mask { 774 STATION_PARAM_APPLY_UAPSD = BIT(0), 775 STATION_PARAM_APPLY_CAPABILITY = BIT(1), 776 STATION_PARAM_APPLY_PLINK_STATE = BIT(2), 777 }; 778 779 /** 780 * struct station_parameters - station parameters 781 * 782 * Used to change and create a new station. 783 * 784 * @vlan: vlan interface station should belong to 785 * @supported_rates: supported rates in IEEE 802.11 format 786 * (or NULL for no change) 787 * @supported_rates_len: number of supported rates 788 * @sta_flags_mask: station flags that changed 789 * (bitmask of BIT(NL80211_STA_FLAG_...)) 790 * @sta_flags_set: station flags values 791 * (bitmask of BIT(NL80211_STA_FLAG_...)) 792 * @listen_interval: listen interval or -1 for no change 793 * @aid: AID or zero for no change 794 * @plink_action: plink action to take 795 * @plink_state: set the peer link state for a station 796 * @ht_capa: HT capabilities of station 797 * @vht_capa: VHT capabilities of station 798 * @uapsd_queues: bitmap of queues configured for uapsd. same format 799 * as the AC bitmap in the QoS info field 800 * @max_sp: max Service Period. same format as the MAX_SP in the 801 * QoS info field (but already shifted down) 802 * @sta_modify_mask: bitmap indicating which parameters changed 803 * (for those that don't have a natural "no change" value), 804 * see &enum station_parameters_apply_mask 805 * @local_pm: local link-specific mesh power save mode (no change when set 806 * to unknown) 807 * @capability: station capability 808 * @ext_capab: extended capabilities of the station 809 * @ext_capab_len: number of extended capabilities 810 * @supported_channels: supported channels in IEEE 802.11 format 811 * @supported_channels_len: number of supported channels 812 * @supported_oper_classes: supported oper classes in IEEE 802.11 format 813 * @supported_oper_classes_len: number of supported operating classes 814 * @opmode_notif: operating mode field from Operating Mode Notification 815 * @opmode_notif_used: information if operating mode field is used 816 */ 817 struct station_parameters { 818 const u8 *supported_rates; 819 struct net_device *vlan; 820 u32 sta_flags_mask, sta_flags_set; 821 u32 sta_modify_mask; 822 int listen_interval; 823 u16 aid; 824 u8 supported_rates_len; 825 u8 plink_action; 826 u8 plink_state; 827 const struct ieee80211_ht_cap *ht_capa; 828 const struct ieee80211_vht_cap *vht_capa; 829 u8 uapsd_queues; 830 u8 max_sp; 831 enum nl80211_mesh_power_mode local_pm; 832 u16 capability; 833 const u8 *ext_capab; 834 u8 ext_capab_len; 835 const u8 *supported_channels; 836 u8 supported_channels_len; 837 const u8 *supported_oper_classes; 838 u8 supported_oper_classes_len; 839 u8 opmode_notif; 840 bool opmode_notif_used; 841 }; 842 843 /** 844 * struct station_del_parameters - station deletion parameters 845 * 846 * Used to delete a station entry (or all stations). 847 * 848 * @mac: MAC address of the station to remove or NULL to remove all stations 849 * @subtype: Management frame subtype to use for indicating removal 850 * (10 = Disassociation, 12 = Deauthentication) 851 * @reason_code: Reason code for the Disassociation/Deauthentication frame 852 */ 853 struct station_del_parameters { 854 const u8 *mac; 855 u8 subtype; 856 u16 reason_code; 857 }; 858 859 /** 860 * enum cfg80211_station_type - the type of station being modified 861 * @CFG80211_STA_AP_CLIENT: client of an AP interface 862 * @CFG80211_STA_AP_CLIENT_UNASSOC: client of an AP interface that is still 863 * unassociated (update properties for this type of client is permitted) 864 * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has 865 * the AP MLME in the device 866 * @CFG80211_STA_AP_STA: AP station on managed interface 867 * @CFG80211_STA_IBSS: IBSS station 868 * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry 869 * while TDLS setup is in progress, it moves out of this state when 870 * being marked authorized; use this only if TDLS with external setup is 871 * supported/used) 872 * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active 873 * entry that is operating, has been marked authorized by userspace) 874 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed) 875 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed) 876 */ 877 enum cfg80211_station_type { 878 CFG80211_STA_AP_CLIENT, 879 CFG80211_STA_AP_CLIENT_UNASSOC, 880 CFG80211_STA_AP_MLME_CLIENT, 881 CFG80211_STA_AP_STA, 882 CFG80211_STA_IBSS, 883 CFG80211_STA_TDLS_PEER_SETUP, 884 CFG80211_STA_TDLS_PEER_ACTIVE, 885 CFG80211_STA_MESH_PEER_KERNEL, 886 CFG80211_STA_MESH_PEER_USER, 887 }; 888 889 /** 890 * cfg80211_check_station_change - validate parameter changes 891 * @wiphy: the wiphy this operates on 892 * @params: the new parameters for a station 893 * @statype: the type of station being modified 894 * 895 * Utility function for the @change_station driver method. Call this function 896 * with the appropriate station type looking up the station (and checking that 897 * it exists). It will verify whether the station change is acceptable, and if 898 * not will return an error code. Note that it may modify the parameters for 899 * backward compatibility reasons, so don't use them before calling this. 900 */ 901 int cfg80211_check_station_change(struct wiphy *wiphy, 902 struct station_parameters *params, 903 enum cfg80211_station_type statype); 904 905 /** 906 * enum station_info_rate_flags - bitrate info flags 907 * 908 * Used by the driver to indicate the specific rate transmission 909 * type for 802.11n transmissions. 910 * 911 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS 912 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS 913 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 914 * @RATE_INFO_FLAGS_60G: 60GHz MCS 915 */ 916 enum rate_info_flags { 917 RATE_INFO_FLAGS_MCS = BIT(0), 918 RATE_INFO_FLAGS_VHT_MCS = BIT(1), 919 RATE_INFO_FLAGS_SHORT_GI = BIT(2), 920 RATE_INFO_FLAGS_60G = BIT(3), 921 }; 922 923 /** 924 * enum rate_info_bw - rate bandwidth information 925 * 926 * Used by the driver to indicate the rate bandwidth. 927 * 928 * @RATE_INFO_BW_5: 5 MHz bandwidth 929 * @RATE_INFO_BW_10: 10 MHz bandwidth 930 * @RATE_INFO_BW_20: 20 MHz bandwidth 931 * @RATE_INFO_BW_40: 40 MHz bandwidth 932 * @RATE_INFO_BW_80: 80 MHz bandwidth 933 * @RATE_INFO_BW_160: 160 MHz bandwidth 934 */ 935 enum rate_info_bw { 936 RATE_INFO_BW_5, 937 RATE_INFO_BW_10, 938 RATE_INFO_BW_20, 939 RATE_INFO_BW_40, 940 RATE_INFO_BW_80, 941 RATE_INFO_BW_160, 942 }; 943 944 /** 945 * struct rate_info - bitrate information 946 * 947 * Information about a receiving or transmitting bitrate 948 * 949 * @flags: bitflag of flags from &enum rate_info_flags 950 * @mcs: mcs index if struct describes a 802.11n bitrate 951 * @legacy: bitrate in 100kbit/s for 802.11abg 952 * @nss: number of streams (VHT only) 953 * @bw: bandwidth (from &enum rate_info_bw) 954 */ 955 struct rate_info { 956 u8 flags; 957 u8 mcs; 958 u16 legacy; 959 u8 nss; 960 u8 bw; 961 }; 962 963 /** 964 * enum station_info_rate_flags - bitrate info flags 965 * 966 * Used by the driver to indicate the specific rate transmission 967 * type for 802.11n transmissions. 968 * 969 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 970 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 971 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 972 */ 973 enum bss_param_flags { 974 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 975 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 976 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 977 }; 978 979 /** 980 * struct sta_bss_parameters - BSS parameters for the attached station 981 * 982 * Information about the currently associated BSS 983 * 984 * @flags: bitflag of flags from &enum bss_param_flags 985 * @dtim_period: DTIM period for the BSS 986 * @beacon_interval: beacon interval 987 */ 988 struct sta_bss_parameters { 989 u8 flags; 990 u8 dtim_period; 991 u16 beacon_interval; 992 }; 993 994 /** 995 * struct cfg80211_tid_stats - per-TID statistics 996 * @filled: bitmap of flags using the bits of &enum nl80211_tid_stats to 997 * indicate the relevant values in this struct are filled 998 * @rx_msdu: number of received MSDUs 999 * @tx_msdu: number of (attempted) transmitted MSDUs 1000 * @tx_msdu_retries: number of retries (not counting the first) for 1001 * transmitted MSDUs 1002 * @tx_msdu_failed: number of failed transmitted MSDUs 1003 */ 1004 struct cfg80211_tid_stats { 1005 u32 filled; 1006 u64 rx_msdu; 1007 u64 tx_msdu; 1008 u64 tx_msdu_retries; 1009 u64 tx_msdu_failed; 1010 }; 1011 1012 #define IEEE80211_MAX_CHAINS 4 1013 1014 /** 1015 * struct station_info - station information 1016 * 1017 * Station information filled by driver for get_station() and dump_station. 1018 * 1019 * @filled: bitflag of flags using the bits of &enum nl80211_sta_info to 1020 * indicate the relevant values in this struct for them 1021 * @connected_time: time(in secs) since a station is last connected 1022 * @inactive_time: time since last station activity (tx/rx) in milliseconds 1023 * @rx_bytes: bytes (size of MPDUs) received from this station 1024 * @tx_bytes: bytes (size of MPDUs) transmitted to this station 1025 * @llid: mesh local link id 1026 * @plid: mesh peer link id 1027 * @plink_state: mesh peer link state 1028 * @signal: The signal strength, type depends on the wiphy's signal_type. 1029 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1030 * @signal_avg: Average signal strength, type depends on the wiphy's signal_type. 1031 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1032 * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg 1033 * @chain_signal: per-chain signal strength of last received packet in dBm 1034 * @chain_signal_avg: per-chain signal strength average in dBm 1035 * @txrate: current unicast bitrate from this station 1036 * @rxrate: current unicast bitrate to this station 1037 * @rx_packets: packets (MSDUs & MMPDUs) received from this station 1038 * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this station 1039 * @tx_retries: cumulative retry counts (MPDUs) 1040 * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK) 1041 * @rx_dropped_misc: Dropped for un-specified reason. 1042 * @bss_param: current BSS parameters 1043 * @generation: generation number for nl80211 dumps. 1044 * This number should increase every time the list of stations 1045 * changes, i.e. when a station is added or removed, so that 1046 * userspace can tell whether it got a consistent snapshot. 1047 * @assoc_req_ies: IEs from (Re)Association Request. 1048 * This is used only when in AP mode with drivers that do not use 1049 * user space MLME/SME implementation. The information is provided for 1050 * the cfg80211_new_sta() calls to notify user space of the IEs. 1051 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets. 1052 * @sta_flags: station flags mask & values 1053 * @beacon_loss_count: Number of times beacon loss event has triggered. 1054 * @t_offset: Time offset of the station relative to this host. 1055 * @local_pm: local mesh STA power save mode 1056 * @peer_pm: peer mesh STA power save mode 1057 * @nonpeer_pm: non-peer mesh STA power save mode 1058 * @expected_throughput: expected throughput in kbps (including 802.11 headers) 1059 * towards this station. 1060 * @rx_beacon: number of beacons received from this peer 1061 * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received 1062 * from this peer 1063 * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last 1064 * (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs. 1065 */ 1066 struct station_info { 1067 u32 filled; 1068 u32 connected_time; 1069 u32 inactive_time; 1070 u64 rx_bytes; 1071 u64 tx_bytes; 1072 u16 llid; 1073 u16 plid; 1074 u8 plink_state; 1075 s8 signal; 1076 s8 signal_avg; 1077 1078 u8 chains; 1079 s8 chain_signal[IEEE80211_MAX_CHAINS]; 1080 s8 chain_signal_avg[IEEE80211_MAX_CHAINS]; 1081 1082 struct rate_info txrate; 1083 struct rate_info rxrate; 1084 u32 rx_packets; 1085 u32 tx_packets; 1086 u32 tx_retries; 1087 u32 tx_failed; 1088 u32 rx_dropped_misc; 1089 struct sta_bss_parameters bss_param; 1090 struct nl80211_sta_flag_update sta_flags; 1091 1092 int generation; 1093 1094 const u8 *assoc_req_ies; 1095 size_t assoc_req_ies_len; 1096 1097 u32 beacon_loss_count; 1098 s64 t_offset; 1099 enum nl80211_mesh_power_mode local_pm; 1100 enum nl80211_mesh_power_mode peer_pm; 1101 enum nl80211_mesh_power_mode nonpeer_pm; 1102 1103 u32 expected_throughput; 1104 1105 u64 rx_beacon; 1106 u8 rx_beacon_signal_avg; 1107 struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1]; 1108 }; 1109 1110 /** 1111 * cfg80211_get_station - retrieve information about a given station 1112 * @dev: the device where the station is supposed to be connected to 1113 * @mac_addr: the mac address of the station of interest 1114 * @sinfo: pointer to the structure to fill with the information 1115 * 1116 * Returns 0 on success and sinfo is filled with the available information 1117 * otherwise returns a negative error code and the content of sinfo has to be 1118 * considered undefined. 1119 */ 1120 int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr, 1121 struct station_info *sinfo); 1122 1123 /** 1124 * enum monitor_flags - monitor flags 1125 * 1126 * Monitor interface configuration flags. Note that these must be the bits 1127 * according to the nl80211 flags. 1128 * 1129 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 1130 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 1131 * @MONITOR_FLAG_CONTROL: pass control frames 1132 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 1133 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 1134 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address 1135 */ 1136 enum monitor_flags { 1137 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 1138 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 1139 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 1140 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 1141 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 1142 MONITOR_FLAG_ACTIVE = 1<<NL80211_MNTR_FLAG_ACTIVE, 1143 }; 1144 1145 /** 1146 * enum mpath_info_flags - mesh path information flags 1147 * 1148 * Used by the driver to indicate which info in &struct mpath_info it has filled 1149 * in during get_station() or dump_station(). 1150 * 1151 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 1152 * @MPATH_INFO_SN: @sn filled 1153 * @MPATH_INFO_METRIC: @metric filled 1154 * @MPATH_INFO_EXPTIME: @exptime filled 1155 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 1156 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 1157 * @MPATH_INFO_FLAGS: @flags filled 1158 */ 1159 enum mpath_info_flags { 1160 MPATH_INFO_FRAME_QLEN = BIT(0), 1161 MPATH_INFO_SN = BIT(1), 1162 MPATH_INFO_METRIC = BIT(2), 1163 MPATH_INFO_EXPTIME = BIT(3), 1164 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 1165 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 1166 MPATH_INFO_FLAGS = BIT(6), 1167 }; 1168 1169 /** 1170 * struct mpath_info - mesh path information 1171 * 1172 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 1173 * 1174 * @filled: bitfield of flags from &enum mpath_info_flags 1175 * @frame_qlen: number of queued frames for this destination 1176 * @sn: target sequence number 1177 * @metric: metric (cost) of this mesh path 1178 * @exptime: expiration time for the mesh path from now, in msecs 1179 * @flags: mesh path flags 1180 * @discovery_timeout: total mesh path discovery timeout, in msecs 1181 * @discovery_retries: mesh path discovery retries 1182 * @generation: generation number for nl80211 dumps. 1183 * This number should increase every time the list of mesh paths 1184 * changes, i.e. when a station is added or removed, so that 1185 * userspace can tell whether it got a consistent snapshot. 1186 */ 1187 struct mpath_info { 1188 u32 filled; 1189 u32 frame_qlen; 1190 u32 sn; 1191 u32 metric; 1192 u32 exptime; 1193 u32 discovery_timeout; 1194 u8 discovery_retries; 1195 u8 flags; 1196 1197 int generation; 1198 }; 1199 1200 /** 1201 * struct bss_parameters - BSS parameters 1202 * 1203 * Used to change BSS parameters (mainly for AP mode). 1204 * 1205 * @use_cts_prot: Whether to use CTS protection 1206 * (0 = no, 1 = yes, -1 = do not change) 1207 * @use_short_preamble: Whether the use of short preambles is allowed 1208 * (0 = no, 1 = yes, -1 = do not change) 1209 * @use_short_slot_time: Whether the use of short slot time is allowed 1210 * (0 = no, 1 = yes, -1 = do not change) 1211 * @basic_rates: basic rates in IEEE 802.11 format 1212 * (or NULL for no change) 1213 * @basic_rates_len: number of basic rates 1214 * @ap_isolate: do not forward packets between connected stations 1215 * @ht_opmode: HT Operation mode 1216 * (u16 = opmode, -1 = do not change) 1217 * @p2p_ctwindow: P2P CT Window (-1 = no change) 1218 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change) 1219 */ 1220 struct bss_parameters { 1221 int use_cts_prot; 1222 int use_short_preamble; 1223 int use_short_slot_time; 1224 const u8 *basic_rates; 1225 u8 basic_rates_len; 1226 int ap_isolate; 1227 int ht_opmode; 1228 s8 p2p_ctwindow, p2p_opp_ps; 1229 }; 1230 1231 /** 1232 * struct mesh_config - 802.11s mesh configuration 1233 * 1234 * These parameters can be changed while the mesh is active. 1235 * 1236 * @dot11MeshRetryTimeout: the initial retry timeout in millisecond units used 1237 * by the Mesh Peering Open message 1238 * @dot11MeshConfirmTimeout: the initial retry timeout in millisecond units 1239 * used by the Mesh Peering Open message 1240 * @dot11MeshHoldingTimeout: the confirm timeout in millisecond units used by 1241 * the mesh peering management to close a mesh peering 1242 * @dot11MeshMaxPeerLinks: the maximum number of peer links allowed on this 1243 * mesh interface 1244 * @dot11MeshMaxRetries: the maximum number of peer link open retries that can 1245 * be sent to establish a new peer link instance in a mesh 1246 * @dot11MeshTTL: the value of TTL field set at a source mesh STA 1247 * @element_ttl: the value of TTL field set at a mesh STA for path selection 1248 * elements 1249 * @auto_open_plinks: whether we should automatically open peer links when we 1250 * detect compatible mesh peers 1251 * @dot11MeshNbrOffsetMaxNeighbor: the maximum number of neighbors to 1252 * synchronize to for 11s default synchronization method 1253 * @dot11MeshHWMPmaxPREQretries: the number of action frames containing a PREQ 1254 * that an originator mesh STA can send to a particular path target 1255 * @path_refresh_time: how frequently to refresh mesh paths in milliseconds 1256 * @min_discovery_timeout: the minimum length of time to wait until giving up on 1257 * a path discovery in milliseconds 1258 * @dot11MeshHWMPactivePathTimeout: the time (in TUs) for which mesh STAs 1259 * receiving a PREQ shall consider the forwarding information from the 1260 * root to be valid. (TU = time unit) 1261 * @dot11MeshHWMPpreqMinInterval: the minimum interval of time (in TUs) during 1262 * which a mesh STA can send only one action frame containing a PREQ 1263 * element 1264 * @dot11MeshHWMPperrMinInterval: the minimum interval of time (in TUs) during 1265 * which a mesh STA can send only one Action frame containing a PERR 1266 * element 1267 * @dot11MeshHWMPnetDiameterTraversalTime: the interval of time (in TUs) that 1268 * it takes for an HWMP information element to propagate across the mesh 1269 * @dot11MeshHWMPRootMode: the configuration of a mesh STA as root mesh STA 1270 * @dot11MeshHWMPRannInterval: the interval of time (in TUs) between root 1271 * announcements are transmitted 1272 * @dot11MeshGateAnnouncementProtocol: whether to advertise that this mesh 1273 * station has access to a broader network beyond the MBSS. (This is 1274 * missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol set to true 1275 * only means that the station will announce others it's a mesh gate, but 1276 * not necessarily using the gate announcement protocol. Still keeping the 1277 * same nomenclature to be in sync with the spec) 1278 * @dot11MeshForwarding: whether the Mesh STA is forwarding or non-forwarding 1279 * entity (default is TRUE - forwarding entity) 1280 * @rssi_threshold: the threshold for average signal strength of candidate 1281 * station to establish a peer link 1282 * @ht_opmode: mesh HT protection mode 1283 * 1284 * @dot11MeshHWMPactivePathToRootTimeout: The time (in TUs) for which mesh STAs 1285 * receiving a proactive PREQ shall consider the forwarding information to 1286 * the root mesh STA to be valid. 1287 * 1288 * @dot11MeshHWMProotInterval: The interval of time (in TUs) between proactive 1289 * PREQs are transmitted. 1290 * @dot11MeshHWMPconfirmationInterval: The minimum interval of time (in TUs) 1291 * during which a mesh STA can send only one Action frame containing 1292 * a PREQ element for root path confirmation. 1293 * @power_mode: The default mesh power save mode which will be the initial 1294 * setting for new peer links. 1295 * @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake 1296 * after transmitting its beacon. 1297 * @plink_timeout: If no tx activity is seen from a STA we've established 1298 * peering with for longer than this time (in seconds), then remove it 1299 * from the STA's list of peers. Default is 30 minutes. 1300 */ 1301 struct mesh_config { 1302 u16 dot11MeshRetryTimeout; 1303 u16 dot11MeshConfirmTimeout; 1304 u16 dot11MeshHoldingTimeout; 1305 u16 dot11MeshMaxPeerLinks; 1306 u8 dot11MeshMaxRetries; 1307 u8 dot11MeshTTL; 1308 u8 element_ttl; 1309 bool auto_open_plinks; 1310 u32 dot11MeshNbrOffsetMaxNeighbor; 1311 u8 dot11MeshHWMPmaxPREQretries; 1312 u32 path_refresh_time; 1313 u16 min_discovery_timeout; 1314 u32 dot11MeshHWMPactivePathTimeout; 1315 u16 dot11MeshHWMPpreqMinInterval; 1316 u16 dot11MeshHWMPperrMinInterval; 1317 u16 dot11MeshHWMPnetDiameterTraversalTime; 1318 u8 dot11MeshHWMPRootMode; 1319 u16 dot11MeshHWMPRannInterval; 1320 bool dot11MeshGateAnnouncementProtocol; 1321 bool dot11MeshForwarding; 1322 s32 rssi_threshold; 1323 u16 ht_opmode; 1324 u32 dot11MeshHWMPactivePathToRootTimeout; 1325 u16 dot11MeshHWMProotInterval; 1326 u16 dot11MeshHWMPconfirmationInterval; 1327 enum nl80211_mesh_power_mode power_mode; 1328 u16 dot11MeshAwakeWindowDuration; 1329 u32 plink_timeout; 1330 }; 1331 1332 /** 1333 * struct mesh_setup - 802.11s mesh setup configuration 1334 * @chandef: defines the channel to use 1335 * @mesh_id: the mesh ID 1336 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 1337 * @sync_method: which synchronization method to use 1338 * @path_sel_proto: which path selection protocol to use 1339 * @path_metric: which metric to use 1340 * @auth_id: which authentication method this mesh is using 1341 * @ie: vendor information elements (optional) 1342 * @ie_len: length of vendor information elements 1343 * @is_authenticated: this mesh requires authentication 1344 * @is_secure: this mesh uses security 1345 * @user_mpm: userspace handles all MPM functions 1346 * @dtim_period: DTIM period to use 1347 * @beacon_interval: beacon interval to use 1348 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] 1349 * @basic_rates: basic rates to use when creating the mesh 1350 * 1351 * These parameters are fixed when the mesh is created. 1352 */ 1353 struct mesh_setup { 1354 struct cfg80211_chan_def chandef; 1355 const u8 *mesh_id; 1356 u8 mesh_id_len; 1357 u8 sync_method; 1358 u8 path_sel_proto; 1359 u8 path_metric; 1360 u8 auth_id; 1361 const u8 *ie; 1362 u8 ie_len; 1363 bool is_authenticated; 1364 bool is_secure; 1365 bool user_mpm; 1366 u8 dtim_period; 1367 u16 beacon_interval; 1368 int mcast_rate[IEEE80211_NUM_BANDS]; 1369 u32 basic_rates; 1370 }; 1371 1372 /** 1373 * struct ocb_setup - 802.11p OCB mode setup configuration 1374 * @chandef: defines the channel to use 1375 * 1376 * These parameters are fixed when connecting to the network 1377 */ 1378 struct ocb_setup { 1379 struct cfg80211_chan_def chandef; 1380 }; 1381 1382 /** 1383 * struct ieee80211_txq_params - TX queue parameters 1384 * @ac: AC identifier 1385 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 1386 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 1387 * 1..32767] 1388 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 1389 * 1..32767] 1390 * @aifs: Arbitration interframe space [0..255] 1391 */ 1392 struct ieee80211_txq_params { 1393 enum nl80211_ac ac; 1394 u16 txop; 1395 u16 cwmin; 1396 u16 cwmax; 1397 u8 aifs; 1398 }; 1399 1400 /** 1401 * DOC: Scanning and BSS list handling 1402 * 1403 * The scanning process itself is fairly simple, but cfg80211 offers quite 1404 * a bit of helper functionality. To start a scan, the scan operation will 1405 * be invoked with a scan definition. This scan definition contains the 1406 * channels to scan, and the SSIDs to send probe requests for (including the 1407 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 1408 * probe. Additionally, a scan request may contain extra information elements 1409 * that should be added to the probe request. The IEs are guaranteed to be 1410 * well-formed, and will not exceed the maximum length the driver advertised 1411 * in the wiphy structure. 1412 * 1413 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 1414 * it is responsible for maintaining the BSS list; the driver should not 1415 * maintain a list itself. For this notification, various functions exist. 1416 * 1417 * Since drivers do not maintain a BSS list, there are also a number of 1418 * functions to search for a BSS and obtain information about it from the 1419 * BSS structure cfg80211 maintains. The BSS list is also made available 1420 * to userspace. 1421 */ 1422 1423 /** 1424 * struct cfg80211_ssid - SSID description 1425 * @ssid: the SSID 1426 * @ssid_len: length of the ssid 1427 */ 1428 struct cfg80211_ssid { 1429 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1430 u8 ssid_len; 1431 }; 1432 1433 /** 1434 * struct cfg80211_scan_request - scan request description 1435 * 1436 * @ssids: SSIDs to scan for (active scan only) 1437 * @n_ssids: number of SSIDs 1438 * @channels: channels to scan on. 1439 * @n_channels: total number of channels to scan 1440 * @scan_width: channel width for scanning 1441 * @ie: optional information element(s) to add into Probe Request or %NULL 1442 * @ie_len: length of ie in octets 1443 * @flags: bit field of flags controlling operation 1444 * @rates: bitmap of rates to advertise for each band 1445 * @wiphy: the wiphy this was for 1446 * @scan_start: time (in jiffies) when the scan started 1447 * @wdev: the wireless device to scan for 1448 * @aborted: (internal) scan request was notified as aborted 1449 * @notified: (internal) scan request was notified as done or aborted 1450 * @no_cck: used to send probe requests at non CCK rate in 2GHz band 1451 * @mac_addr: MAC address used with randomisation 1452 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1453 * are 0 in the mask should be randomised, bits that are 1 should 1454 * be taken from the @mac_addr 1455 */ 1456 struct cfg80211_scan_request { 1457 struct cfg80211_ssid *ssids; 1458 int n_ssids; 1459 u32 n_channels; 1460 enum nl80211_bss_scan_width scan_width; 1461 const u8 *ie; 1462 size_t ie_len; 1463 u32 flags; 1464 1465 u32 rates[IEEE80211_NUM_BANDS]; 1466 1467 struct wireless_dev *wdev; 1468 1469 u8 mac_addr[ETH_ALEN] __aligned(2); 1470 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1471 1472 /* internal */ 1473 struct wiphy *wiphy; 1474 unsigned long scan_start; 1475 bool aborted, notified; 1476 bool no_cck; 1477 1478 /* keep last */ 1479 struct ieee80211_channel *channels[0]; 1480 }; 1481 1482 static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask) 1483 { 1484 int i; 1485 1486 get_random_bytes(buf, ETH_ALEN); 1487 for (i = 0; i < ETH_ALEN; i++) { 1488 buf[i] &= ~mask[i]; 1489 buf[i] |= addr[i] & mask[i]; 1490 } 1491 } 1492 1493 /** 1494 * struct cfg80211_match_set - sets of attributes to match 1495 * 1496 * @ssid: SSID to be matched; may be zero-length for no match (RSSI only) 1497 * @rssi_thold: don't report scan results below this threshold (in s32 dBm) 1498 */ 1499 struct cfg80211_match_set { 1500 struct cfg80211_ssid ssid; 1501 s32 rssi_thold; 1502 }; 1503 1504 /** 1505 * struct cfg80211_sched_scan_plan - scan plan for scheduled scan 1506 * 1507 * @interval: interval between scheduled scan iterations. In seconds. 1508 * @iterations: number of scan iterations in this scan plan. Zero means 1509 * infinite loop. 1510 * The last scan plan will always have this parameter set to zero, 1511 * all other scan plans will have a finite number of iterations. 1512 */ 1513 struct cfg80211_sched_scan_plan { 1514 u32 interval; 1515 u32 iterations; 1516 }; 1517 1518 /** 1519 * struct cfg80211_sched_scan_request - scheduled scan request description 1520 * 1521 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 1522 * @n_ssids: number of SSIDs 1523 * @n_channels: total number of channels to scan 1524 * @scan_width: channel width for scanning 1525 * @ie: optional information element(s) to add into Probe Request or %NULL 1526 * @ie_len: length of ie in octets 1527 * @flags: bit field of flags controlling operation 1528 * @match_sets: sets of parameters to be matched for a scan result 1529 * entry to be considered valid and to be passed to the host 1530 * (others are filtered out). 1531 * If ommited, all results are passed. 1532 * @n_match_sets: number of match sets 1533 * @wiphy: the wiphy this was for 1534 * @dev: the interface 1535 * @scan_start: start time of the scheduled scan 1536 * @channels: channels to scan 1537 * @min_rssi_thold: for drivers only supporting a single threshold, this 1538 * contains the minimum over all matchsets 1539 * @mac_addr: MAC address used with randomisation 1540 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1541 * are 0 in the mask should be randomised, bits that are 1 should 1542 * be taken from the @mac_addr 1543 * @scan_plans: scan plans to be executed in this scheduled scan. Lowest 1544 * index must be executed first. 1545 * @n_scan_plans: number of scan plans, at least 1. 1546 * @rcu_head: RCU callback used to free the struct 1547 * @owner_nlportid: netlink portid of owner (if this should is a request 1548 * owned by a particular socket) 1549 * @delay: delay in seconds to use before starting the first scan 1550 * cycle. The driver may ignore this parameter and start 1551 * immediately (or at any other time), if this feature is not 1552 * supported. 1553 */ 1554 struct cfg80211_sched_scan_request { 1555 struct cfg80211_ssid *ssids; 1556 int n_ssids; 1557 u32 n_channels; 1558 enum nl80211_bss_scan_width scan_width; 1559 const u8 *ie; 1560 size_t ie_len; 1561 u32 flags; 1562 struct cfg80211_match_set *match_sets; 1563 int n_match_sets; 1564 s32 min_rssi_thold; 1565 u32 delay; 1566 struct cfg80211_sched_scan_plan *scan_plans; 1567 int n_scan_plans; 1568 1569 u8 mac_addr[ETH_ALEN] __aligned(2); 1570 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1571 1572 /* internal */ 1573 struct wiphy *wiphy; 1574 struct net_device *dev; 1575 unsigned long scan_start; 1576 struct rcu_head rcu_head; 1577 u32 owner_nlportid; 1578 1579 /* keep last */ 1580 struct ieee80211_channel *channels[0]; 1581 }; 1582 1583 /** 1584 * enum cfg80211_signal_type - signal type 1585 * 1586 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 1587 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 1588 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 1589 */ 1590 enum cfg80211_signal_type { 1591 CFG80211_SIGNAL_TYPE_NONE, 1592 CFG80211_SIGNAL_TYPE_MBM, 1593 CFG80211_SIGNAL_TYPE_UNSPEC, 1594 }; 1595 1596 /** 1597 * struct cfg80211_inform_bss - BSS inform data 1598 * @chan: channel the frame was received on 1599 * @scan_width: scan width that was used 1600 * @signal: signal strength value, according to the wiphy's 1601 * signal type 1602 * @boottime_ns: timestamp (CLOCK_BOOTTIME) when the information was 1603 * received; should match the time when the frame was actually 1604 * received by the device (not just by the host, in case it was 1605 * buffered on the device) and be accurate to about 10ms. 1606 * If the frame isn't buffered, just passing the return value of 1607 * ktime_get_boot_ns() is likely appropriate. 1608 */ 1609 struct cfg80211_inform_bss { 1610 struct ieee80211_channel *chan; 1611 enum nl80211_bss_scan_width scan_width; 1612 s32 signal; 1613 u64 boottime_ns; 1614 }; 1615 1616 /** 1617 * struct cfg80211_bss_ie_data - BSS entry IE data 1618 * @tsf: TSF contained in the frame that carried these IEs 1619 * @rcu_head: internal use, for freeing 1620 * @len: length of the IEs 1621 * @from_beacon: these IEs are known to come from a beacon 1622 * @data: IE data 1623 */ 1624 struct cfg80211_bss_ies { 1625 u64 tsf; 1626 struct rcu_head rcu_head; 1627 int len; 1628 bool from_beacon; 1629 u8 data[]; 1630 }; 1631 1632 /** 1633 * struct cfg80211_bss - BSS description 1634 * 1635 * This structure describes a BSS (which may also be a mesh network) 1636 * for use in scan results and similar. 1637 * 1638 * @channel: channel this BSS is on 1639 * @scan_width: width of the control channel 1640 * @bssid: BSSID of the BSS 1641 * @beacon_interval: the beacon interval as from the frame 1642 * @capability: the capability field in host byte order 1643 * @ies: the information elements (Note that there is no guarantee that these 1644 * are well-formed!); this is a pointer to either the beacon_ies or 1645 * proberesp_ies depending on whether Probe Response frame has been 1646 * received. It is always non-%NULL. 1647 * @beacon_ies: the information elements from the last Beacon frame 1648 * (implementation note: if @hidden_beacon_bss is set this struct doesn't 1649 * own the beacon_ies, but they're just pointers to the ones from the 1650 * @hidden_beacon_bss struct) 1651 * @proberesp_ies: the information elements from the last Probe Response frame 1652 * @hidden_beacon_bss: in case this BSS struct represents a probe response from 1653 * a BSS that hides the SSID in its beacon, this points to the BSS struct 1654 * that holds the beacon data. @beacon_ies is still valid, of course, and 1655 * points to the same data as hidden_beacon_bss->beacon_ies in that case. 1656 * @signal: signal strength value (type depends on the wiphy's signal_type) 1657 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 1658 */ 1659 struct cfg80211_bss { 1660 struct ieee80211_channel *channel; 1661 enum nl80211_bss_scan_width scan_width; 1662 1663 const struct cfg80211_bss_ies __rcu *ies; 1664 const struct cfg80211_bss_ies __rcu *beacon_ies; 1665 const struct cfg80211_bss_ies __rcu *proberesp_ies; 1666 1667 struct cfg80211_bss *hidden_beacon_bss; 1668 1669 s32 signal; 1670 1671 u16 beacon_interval; 1672 u16 capability; 1673 1674 u8 bssid[ETH_ALEN]; 1675 1676 u8 priv[0] __aligned(sizeof(void *)); 1677 }; 1678 1679 /** 1680 * ieee80211_bss_get_ie - find IE with given ID 1681 * @bss: the bss to search 1682 * @ie: the IE ID 1683 * 1684 * Note that the return value is an RCU-protected pointer, so 1685 * rcu_read_lock() must be held when calling this function. 1686 * Return: %NULL if not found. 1687 */ 1688 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 1689 1690 1691 /** 1692 * struct cfg80211_auth_request - Authentication request data 1693 * 1694 * This structure provides information needed to complete IEEE 802.11 1695 * authentication. 1696 * 1697 * @bss: The BSS to authenticate with, the callee must obtain a reference 1698 * to it if it needs to keep it. 1699 * @auth_type: Authentication type (algorithm) 1700 * @ie: Extra IEs to add to Authentication frame or %NULL 1701 * @ie_len: Length of ie buffer in octets 1702 * @key_len: length of WEP key for shared key authentication 1703 * @key_idx: index of WEP key for shared key authentication 1704 * @key: WEP key for shared key authentication 1705 * @sae_data: Non-IE data to use with SAE or %NULL. This starts with 1706 * Authentication transaction sequence number field. 1707 * @sae_data_len: Length of sae_data buffer in octets 1708 */ 1709 struct cfg80211_auth_request { 1710 struct cfg80211_bss *bss; 1711 const u8 *ie; 1712 size_t ie_len; 1713 enum nl80211_auth_type auth_type; 1714 const u8 *key; 1715 u8 key_len, key_idx; 1716 const u8 *sae_data; 1717 size_t sae_data_len; 1718 }; 1719 1720 /** 1721 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association. 1722 * 1723 * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n) 1724 * @ASSOC_REQ_DISABLE_VHT: Disable VHT 1725 * @ASSOC_REQ_USE_RRM: Declare RRM capability in this association 1726 */ 1727 enum cfg80211_assoc_req_flags { 1728 ASSOC_REQ_DISABLE_HT = BIT(0), 1729 ASSOC_REQ_DISABLE_VHT = BIT(1), 1730 ASSOC_REQ_USE_RRM = BIT(2), 1731 }; 1732 1733 /** 1734 * struct cfg80211_assoc_request - (Re)Association request data 1735 * 1736 * This structure provides information needed to complete IEEE 802.11 1737 * (re)association. 1738 * @bss: The BSS to associate with. If the call is successful the driver is 1739 * given a reference that it must give back to cfg80211_send_rx_assoc() 1740 * or to cfg80211_assoc_timeout(). To ensure proper refcounting, new 1741 * association requests while already associating must be rejected. 1742 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 1743 * @ie_len: Length of ie buffer in octets 1744 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 1745 * @crypto: crypto settings 1746 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 1747 * @flags: See &enum cfg80211_assoc_req_flags 1748 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1749 * will be used in ht_capa. Un-supported values will be ignored. 1750 * @ht_capa_mask: The bits of ht_capa which are to be used. 1751 * @vht_capa: VHT capability override 1752 * @vht_capa_mask: VHT capability mask indicating which fields to use 1753 */ 1754 struct cfg80211_assoc_request { 1755 struct cfg80211_bss *bss; 1756 const u8 *ie, *prev_bssid; 1757 size_t ie_len; 1758 struct cfg80211_crypto_settings crypto; 1759 bool use_mfp; 1760 u32 flags; 1761 struct ieee80211_ht_cap ht_capa; 1762 struct ieee80211_ht_cap ht_capa_mask; 1763 struct ieee80211_vht_cap vht_capa, vht_capa_mask; 1764 }; 1765 1766 /** 1767 * struct cfg80211_deauth_request - Deauthentication request data 1768 * 1769 * This structure provides information needed to complete IEEE 802.11 1770 * deauthentication. 1771 * 1772 * @bssid: the BSSID of the BSS to deauthenticate from 1773 * @ie: Extra IEs to add to Deauthentication frame or %NULL 1774 * @ie_len: Length of ie buffer in octets 1775 * @reason_code: The reason code for the deauthentication 1776 * @local_state_change: if set, change local state only and 1777 * do not set a deauth frame 1778 */ 1779 struct cfg80211_deauth_request { 1780 const u8 *bssid; 1781 const u8 *ie; 1782 size_t ie_len; 1783 u16 reason_code; 1784 bool local_state_change; 1785 }; 1786 1787 /** 1788 * struct cfg80211_disassoc_request - Disassociation request data 1789 * 1790 * This structure provides information needed to complete IEEE 802.11 1791 * disassocation. 1792 * 1793 * @bss: the BSS to disassociate from 1794 * @ie: Extra IEs to add to Disassociation frame or %NULL 1795 * @ie_len: Length of ie buffer in octets 1796 * @reason_code: The reason code for the disassociation 1797 * @local_state_change: This is a request for a local state only, i.e., no 1798 * Disassociation frame is to be transmitted. 1799 */ 1800 struct cfg80211_disassoc_request { 1801 struct cfg80211_bss *bss; 1802 const u8 *ie; 1803 size_t ie_len; 1804 u16 reason_code; 1805 bool local_state_change; 1806 }; 1807 1808 /** 1809 * struct cfg80211_ibss_params - IBSS parameters 1810 * 1811 * This structure defines the IBSS parameters for the join_ibss() 1812 * method. 1813 * 1814 * @ssid: The SSID, will always be non-null. 1815 * @ssid_len: The length of the SSID, will always be non-zero. 1816 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1817 * search for IBSSs with a different BSSID. 1818 * @chandef: defines the channel to use if no other IBSS to join can be found 1819 * @channel_fixed: The channel should be fixed -- do not search for 1820 * IBSSs to join on other channels. 1821 * @ie: information element(s) to include in the beacon 1822 * @ie_len: length of that 1823 * @beacon_interval: beacon interval to use 1824 * @privacy: this is a protected network, keys will be configured 1825 * after joining 1826 * @control_port: whether user space controls IEEE 802.1X port, i.e., 1827 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 1828 * required to assume that the port is unauthorized until authorized by 1829 * user space. Otherwise, port is marked authorized by default. 1830 * @userspace_handles_dfs: whether user space controls DFS operation, i.e. 1831 * changes the channel when a radar is detected. This is required 1832 * to operate on DFS channels. 1833 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1834 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1835 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1836 * will be used in ht_capa. Un-supported values will be ignored. 1837 * @ht_capa_mask: The bits of ht_capa which are to be used. 1838 */ 1839 struct cfg80211_ibss_params { 1840 const u8 *ssid; 1841 const u8 *bssid; 1842 struct cfg80211_chan_def chandef; 1843 const u8 *ie; 1844 u8 ssid_len, ie_len; 1845 u16 beacon_interval; 1846 u32 basic_rates; 1847 bool channel_fixed; 1848 bool privacy; 1849 bool control_port; 1850 bool userspace_handles_dfs; 1851 int mcast_rate[IEEE80211_NUM_BANDS]; 1852 struct ieee80211_ht_cap ht_capa; 1853 struct ieee80211_ht_cap ht_capa_mask; 1854 }; 1855 1856 /** 1857 * struct cfg80211_connect_params - Connection parameters 1858 * 1859 * This structure provides information needed to complete IEEE 802.11 1860 * authentication and association. 1861 * 1862 * @channel: The channel to use or %NULL if not specified (auto-select based 1863 * on scan results) 1864 * @channel_hint: The channel of the recommended BSS for initial connection or 1865 * %NULL if not specified 1866 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1867 * results) 1868 * @bssid_hint: The recommended AP BSSID for initial connection to the BSS or 1869 * %NULL if not specified. Unlike the @bssid parameter, the driver is 1870 * allowed to ignore this @bssid_hint if it has knowledge of a better BSS 1871 * to use. 1872 * @ssid: SSID 1873 * @ssid_len: Length of ssid in octets 1874 * @auth_type: Authentication type (algorithm) 1875 * @ie: IEs for association request 1876 * @ie_len: Length of assoc_ie in octets 1877 * @privacy: indicates whether privacy-enabled APs should be used 1878 * @mfp: indicate whether management frame protection is used 1879 * @crypto: crypto settings 1880 * @key_len: length of WEP key for shared key authentication 1881 * @key_idx: index of WEP key for shared key authentication 1882 * @key: WEP key for shared key authentication 1883 * @flags: See &enum cfg80211_assoc_req_flags 1884 * @bg_scan_period: Background scan period in seconds 1885 * or -1 to indicate that default value is to be used. 1886 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1887 * will be used in ht_capa. Un-supported values will be ignored. 1888 * @ht_capa_mask: The bits of ht_capa which are to be used. 1889 * @vht_capa: VHT Capability overrides 1890 * @vht_capa_mask: The bits of vht_capa which are to be used. 1891 */ 1892 struct cfg80211_connect_params { 1893 struct ieee80211_channel *channel; 1894 struct ieee80211_channel *channel_hint; 1895 const u8 *bssid; 1896 const u8 *bssid_hint; 1897 const u8 *ssid; 1898 size_t ssid_len; 1899 enum nl80211_auth_type auth_type; 1900 const u8 *ie; 1901 size_t ie_len; 1902 bool privacy; 1903 enum nl80211_mfp mfp; 1904 struct cfg80211_crypto_settings crypto; 1905 const u8 *key; 1906 u8 key_len, key_idx; 1907 u32 flags; 1908 int bg_scan_period; 1909 struct ieee80211_ht_cap ht_capa; 1910 struct ieee80211_ht_cap ht_capa_mask; 1911 struct ieee80211_vht_cap vht_capa; 1912 struct ieee80211_vht_cap vht_capa_mask; 1913 }; 1914 1915 /** 1916 * enum wiphy_params_flags - set_wiphy_params bitfield values 1917 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1918 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1919 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1920 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1921 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1922 * @WIPHY_PARAM_DYN_ACK: dynack has been enabled 1923 */ 1924 enum wiphy_params_flags { 1925 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1926 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1927 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1928 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1929 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1930 WIPHY_PARAM_DYN_ACK = 1 << 5, 1931 }; 1932 1933 /* 1934 * cfg80211_bitrate_mask - masks for bitrate control 1935 */ 1936 struct cfg80211_bitrate_mask { 1937 struct { 1938 u32 legacy; 1939 u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN]; 1940 u16 vht_mcs[NL80211_VHT_NSS_MAX]; 1941 enum nl80211_txrate_gi gi; 1942 } control[IEEE80211_NUM_BANDS]; 1943 }; 1944 /** 1945 * struct cfg80211_pmksa - PMK Security Association 1946 * 1947 * This structure is passed to the set/del_pmksa() method for PMKSA 1948 * caching. 1949 * 1950 * @bssid: The AP's BSSID. 1951 * @pmkid: The PMK material itself. 1952 */ 1953 struct cfg80211_pmksa { 1954 const u8 *bssid; 1955 const u8 *pmkid; 1956 }; 1957 1958 /** 1959 * struct cfg80211_pkt_pattern - packet pattern 1960 * @mask: bitmask where to match pattern and where to ignore bytes, 1961 * one bit per byte, in same format as nl80211 1962 * @pattern: bytes to match where bitmask is 1 1963 * @pattern_len: length of pattern (in bytes) 1964 * @pkt_offset: packet offset (in bytes) 1965 * 1966 * Internal note: @mask and @pattern are allocated in one chunk of 1967 * memory, free @mask only! 1968 */ 1969 struct cfg80211_pkt_pattern { 1970 const u8 *mask, *pattern; 1971 int pattern_len; 1972 int pkt_offset; 1973 }; 1974 1975 /** 1976 * struct cfg80211_wowlan_tcp - TCP connection parameters 1977 * 1978 * @sock: (internal) socket for source port allocation 1979 * @src: source IP address 1980 * @dst: destination IP address 1981 * @dst_mac: destination MAC address 1982 * @src_port: source port 1983 * @dst_port: destination port 1984 * @payload_len: data payload length 1985 * @payload: data payload buffer 1986 * @payload_seq: payload sequence stamping configuration 1987 * @data_interval: interval at which to send data packets 1988 * @wake_len: wakeup payload match length 1989 * @wake_data: wakeup payload match data 1990 * @wake_mask: wakeup payload match mask 1991 * @tokens_size: length of the tokens buffer 1992 * @payload_tok: payload token usage configuration 1993 */ 1994 struct cfg80211_wowlan_tcp { 1995 struct socket *sock; 1996 __be32 src, dst; 1997 u16 src_port, dst_port; 1998 u8 dst_mac[ETH_ALEN]; 1999 int payload_len; 2000 const u8 *payload; 2001 struct nl80211_wowlan_tcp_data_seq payload_seq; 2002 u32 data_interval; 2003 u32 wake_len; 2004 const u8 *wake_data, *wake_mask; 2005 u32 tokens_size; 2006 /* must be last, variable member */ 2007 struct nl80211_wowlan_tcp_data_token payload_tok; 2008 }; 2009 2010 /** 2011 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 2012 * 2013 * This structure defines the enabled WoWLAN triggers for the device. 2014 * @any: wake up on any activity -- special trigger if device continues 2015 * operating as normal during suspend 2016 * @disconnect: wake up if getting disconnected 2017 * @magic_pkt: wake up on receiving magic packet 2018 * @patterns: wake up on receiving packet matching a pattern 2019 * @n_patterns: number of patterns 2020 * @gtk_rekey_failure: wake up on GTK rekey failure 2021 * @eap_identity_req: wake up on EAP identity request packet 2022 * @four_way_handshake: wake up on 4-way handshake 2023 * @rfkill_release: wake up when rfkill is released 2024 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h. 2025 * NULL if not configured. 2026 * @nd_config: configuration for the scan to be used for net detect wake. 2027 */ 2028 struct cfg80211_wowlan { 2029 bool any, disconnect, magic_pkt, gtk_rekey_failure, 2030 eap_identity_req, four_way_handshake, 2031 rfkill_release; 2032 struct cfg80211_pkt_pattern *patterns; 2033 struct cfg80211_wowlan_tcp *tcp; 2034 int n_patterns; 2035 struct cfg80211_sched_scan_request *nd_config; 2036 }; 2037 2038 /** 2039 * struct cfg80211_coalesce_rules - Coalesce rule parameters 2040 * 2041 * This structure defines coalesce rule for the device. 2042 * @delay: maximum coalescing delay in msecs. 2043 * @condition: condition for packet coalescence. 2044 * see &enum nl80211_coalesce_condition. 2045 * @patterns: array of packet patterns 2046 * @n_patterns: number of patterns 2047 */ 2048 struct cfg80211_coalesce_rules { 2049 int delay; 2050 enum nl80211_coalesce_condition condition; 2051 struct cfg80211_pkt_pattern *patterns; 2052 int n_patterns; 2053 }; 2054 2055 /** 2056 * struct cfg80211_coalesce - Packet coalescing settings 2057 * 2058 * This structure defines coalescing settings. 2059 * @rules: array of coalesce rules 2060 * @n_rules: number of rules 2061 */ 2062 struct cfg80211_coalesce { 2063 struct cfg80211_coalesce_rules *rules; 2064 int n_rules; 2065 }; 2066 2067 /** 2068 * struct cfg80211_wowlan_nd_match - information about the match 2069 * 2070 * @ssid: SSID of the match that triggered the wake up 2071 * @n_channels: Number of channels where the match occurred. This 2072 * value may be zero if the driver can't report the channels. 2073 * @channels: center frequencies of the channels where a match 2074 * occurred (in MHz) 2075 */ 2076 struct cfg80211_wowlan_nd_match { 2077 struct cfg80211_ssid ssid; 2078 int n_channels; 2079 u32 channels[]; 2080 }; 2081 2082 /** 2083 * struct cfg80211_wowlan_nd_info - net detect wake up information 2084 * 2085 * @n_matches: Number of match information instances provided in 2086 * @matches. This value may be zero if the driver can't provide 2087 * match information. 2088 * @matches: Array of pointers to matches containing information about 2089 * the matches that triggered the wake up. 2090 */ 2091 struct cfg80211_wowlan_nd_info { 2092 int n_matches; 2093 struct cfg80211_wowlan_nd_match *matches[]; 2094 }; 2095 2096 /** 2097 * struct cfg80211_wowlan_wakeup - wakeup report 2098 * @disconnect: woke up by getting disconnected 2099 * @magic_pkt: woke up by receiving magic packet 2100 * @gtk_rekey_failure: woke up by GTK rekey failure 2101 * @eap_identity_req: woke up by EAP identity request packet 2102 * @four_way_handshake: woke up by 4-way handshake 2103 * @rfkill_release: woke up by rfkill being released 2104 * @pattern_idx: pattern that caused wakeup, -1 if not due to pattern 2105 * @packet_present_len: copied wakeup packet data 2106 * @packet_len: original wakeup packet length 2107 * @packet: The packet causing the wakeup, if any. 2108 * @packet_80211: For pattern match, magic packet and other data 2109 * frame triggers an 802.3 frame should be reported, for 2110 * disconnect due to deauth 802.11 frame. This indicates which 2111 * it is. 2112 * @tcp_match: TCP wakeup packet received 2113 * @tcp_connlost: TCP connection lost or failed to establish 2114 * @tcp_nomoretokens: TCP data ran out of tokens 2115 * @net_detect: if not %NULL, woke up because of net detect 2116 */ 2117 struct cfg80211_wowlan_wakeup { 2118 bool disconnect, magic_pkt, gtk_rekey_failure, 2119 eap_identity_req, four_way_handshake, 2120 rfkill_release, packet_80211, 2121 tcp_match, tcp_connlost, tcp_nomoretokens; 2122 s32 pattern_idx; 2123 u32 packet_present_len, packet_len; 2124 const void *packet; 2125 struct cfg80211_wowlan_nd_info *net_detect; 2126 }; 2127 2128 /** 2129 * struct cfg80211_gtk_rekey_data - rekey data 2130 * @kek: key encryption key (NL80211_KEK_LEN bytes) 2131 * @kck: key confirmation key (NL80211_KCK_LEN bytes) 2132 * @replay_ctr: replay counter (NL80211_REPLAY_CTR_LEN bytes) 2133 */ 2134 struct cfg80211_gtk_rekey_data { 2135 const u8 *kek, *kck, *replay_ctr; 2136 }; 2137 2138 /** 2139 * struct cfg80211_update_ft_ies_params - FT IE Information 2140 * 2141 * This structure provides information needed to update the fast transition IE 2142 * 2143 * @md: The Mobility Domain ID, 2 Octet value 2144 * @ie: Fast Transition IEs 2145 * @ie_len: Length of ft_ie in octets 2146 */ 2147 struct cfg80211_update_ft_ies_params { 2148 u16 md; 2149 const u8 *ie; 2150 size_t ie_len; 2151 }; 2152 2153 /** 2154 * struct cfg80211_mgmt_tx_params - mgmt tx parameters 2155 * 2156 * This structure provides information needed to transmit a mgmt frame 2157 * 2158 * @chan: channel to use 2159 * @offchan: indicates wether off channel operation is required 2160 * @wait: duration for ROC 2161 * @buf: buffer to transmit 2162 * @len: buffer length 2163 * @no_cck: don't use cck rates for this frame 2164 * @dont_wait_for_ack: tells the low level not to wait for an ack 2165 * @n_csa_offsets: length of csa_offsets array 2166 * @csa_offsets: array of all the csa offsets in the frame 2167 */ 2168 struct cfg80211_mgmt_tx_params { 2169 struct ieee80211_channel *chan; 2170 bool offchan; 2171 unsigned int wait; 2172 const u8 *buf; 2173 size_t len; 2174 bool no_cck; 2175 bool dont_wait_for_ack; 2176 int n_csa_offsets; 2177 const u16 *csa_offsets; 2178 }; 2179 2180 /** 2181 * struct cfg80211_dscp_exception - DSCP exception 2182 * 2183 * @dscp: DSCP value that does not adhere to the user priority range definition 2184 * @up: user priority value to which the corresponding DSCP value belongs 2185 */ 2186 struct cfg80211_dscp_exception { 2187 u8 dscp; 2188 u8 up; 2189 }; 2190 2191 /** 2192 * struct cfg80211_dscp_range - DSCP range definition for user priority 2193 * 2194 * @low: lowest DSCP value of this user priority range, inclusive 2195 * @high: highest DSCP value of this user priority range, inclusive 2196 */ 2197 struct cfg80211_dscp_range { 2198 u8 low; 2199 u8 high; 2200 }; 2201 2202 /* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */ 2203 #define IEEE80211_QOS_MAP_MAX_EX 21 2204 #define IEEE80211_QOS_MAP_LEN_MIN 16 2205 #define IEEE80211_QOS_MAP_LEN_MAX \ 2206 (IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX) 2207 2208 /** 2209 * struct cfg80211_qos_map - QoS Map Information 2210 * 2211 * This struct defines the Interworking QoS map setting for DSCP values 2212 * 2213 * @num_des: number of DSCP exceptions (0..21) 2214 * @dscp_exception: optionally up to maximum of 21 DSCP exceptions from 2215 * the user priority DSCP range definition 2216 * @up: DSCP range definition for a particular user priority 2217 */ 2218 struct cfg80211_qos_map { 2219 u8 num_des; 2220 struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX]; 2221 struct cfg80211_dscp_range up[8]; 2222 }; 2223 2224 /** 2225 * struct cfg80211_ops - backend description for wireless configuration 2226 * 2227 * This struct is registered by fullmac card drivers and/or wireless stacks 2228 * in order to handle configuration requests on their interfaces. 2229 * 2230 * All callbacks except where otherwise noted should return 0 2231 * on success or a negative error code. 2232 * 2233 * All operations are currently invoked under rtnl for consistency with the 2234 * wireless extensions but this is subject to reevaluation as soon as this 2235 * code is used more widely and we have a first user without wext. 2236 * 2237 * @suspend: wiphy device needs to be suspended. The variable @wow will 2238 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 2239 * configured for the device. 2240 * @resume: wiphy device needs to be resumed 2241 * @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback 2242 * to call device_set_wakeup_enable() to enable/disable wakeup from 2243 * the device. 2244 * 2245 * @add_virtual_intf: create a new virtual interface with the given name, 2246 * must set the struct wireless_dev's iftype. Beware: You must create 2247 * the new netdev in the wiphy's network namespace! Returns the struct 2248 * wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must 2249 * also set the address member in the wdev. 2250 * 2251 * @del_virtual_intf: remove the virtual interface 2252 * 2253 * @change_virtual_intf: change type/configuration of virtual interface, 2254 * keep the struct wireless_dev's iftype updated. 2255 * 2256 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 2257 * when adding a group key. 2258 * 2259 * @get_key: get information about the key with the given parameters. 2260 * @mac_addr will be %NULL when requesting information for a group 2261 * key. All pointers given to the @callback function need not be valid 2262 * after it returns. This function should return an error if it is 2263 * not possible to retrieve the key, -ENOENT if it doesn't exist. 2264 * 2265 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 2266 * and @key_index, return -ENOENT if the key doesn't exist. 2267 * 2268 * @set_default_key: set the default key on an interface 2269 * 2270 * @set_default_mgmt_key: set the default management frame key on an interface 2271 * 2272 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 2273 * 2274 * @start_ap: Start acting in AP mode defined by the parameters. 2275 * @change_beacon: Change the beacon parameters for an access point mode 2276 * interface. This should reject the call when AP mode wasn't started. 2277 * @stop_ap: Stop being an AP, including stopping beaconing. 2278 * 2279 * @add_station: Add a new station. 2280 * @del_station: Remove a station 2281 * @change_station: Modify a given station. Note that flags changes are not much 2282 * validated in cfg80211, in particular the auth/assoc/authorized flags 2283 * might come to the driver in invalid combinations -- make sure to check 2284 * them, also against the existing state! Drivers must call 2285 * cfg80211_check_station_change() to validate the information. 2286 * @get_station: get station information for the station identified by @mac 2287 * @dump_station: dump station callback -- resume dump at index @idx 2288 * 2289 * @add_mpath: add a fixed mesh path 2290 * @del_mpath: delete a given mesh path 2291 * @change_mpath: change a given mesh path 2292 * @get_mpath: get a mesh path for the given parameters 2293 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 2294 * @get_mpp: get a mesh proxy path for the given parameters 2295 * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx 2296 * @join_mesh: join the mesh network with the specified parameters 2297 * (invoked with the wireless_dev mutex held) 2298 * @leave_mesh: leave the current mesh network 2299 * (invoked with the wireless_dev mutex held) 2300 * 2301 * @get_mesh_config: Get the current mesh configuration 2302 * 2303 * @update_mesh_config: Update mesh parameters on a running mesh. 2304 * The mask is a bitfield which tells us which parameters to 2305 * set, and which to leave alone. 2306 * 2307 * @change_bss: Modify parameters for a given BSS. 2308 * 2309 * @set_txq_params: Set TX queue parameters 2310 * 2311 * @libertas_set_mesh_channel: Only for backward compatibility for libertas, 2312 * as it doesn't implement join_mesh and needs to set the channel to 2313 * join the mesh instead. 2314 * 2315 * @set_monitor_channel: Set the monitor mode channel for the device. If other 2316 * interfaces are active this callback should reject the configuration. 2317 * If no interfaces are active or the device is down, the channel should 2318 * be stored for when a monitor interface becomes active. 2319 * 2320 * @scan: Request to do a scan. If returning zero, the scan request is given 2321 * the driver, and will be valid until passed to cfg80211_scan_done(). 2322 * For scan results, call cfg80211_inform_bss(); you can call this outside 2323 * the scan/scan_done bracket too. 2324 * @abort_scan: Tell the driver to abort an ongoing scan. The driver shall 2325 * indicate the status of the scan through cfg80211_scan_done(). 2326 * 2327 * @auth: Request to authenticate with the specified peer 2328 * (invoked with the wireless_dev mutex held) 2329 * @assoc: Request to (re)associate with the specified peer 2330 * (invoked with the wireless_dev mutex held) 2331 * @deauth: Request to deauthenticate from the specified peer 2332 * (invoked with the wireless_dev mutex held) 2333 * @disassoc: Request to disassociate from the specified peer 2334 * (invoked with the wireless_dev mutex held) 2335 * 2336 * @connect: Connect to the ESS with the specified parameters. When connected, 2337 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 2338 * If the connection fails for some reason, call cfg80211_connect_result() 2339 * with the status from the AP. 2340 * (invoked with the wireless_dev mutex held) 2341 * @disconnect: Disconnect from the BSS/ESS. 2342 * (invoked with the wireless_dev mutex held) 2343 * 2344 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 2345 * cfg80211_ibss_joined(), also call that function when changing BSSID due 2346 * to a merge. 2347 * (invoked with the wireless_dev mutex held) 2348 * @leave_ibss: Leave the IBSS. 2349 * (invoked with the wireless_dev mutex held) 2350 * 2351 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or 2352 * MESH mode) 2353 * 2354 * @set_wiphy_params: Notify that wiphy parameters have changed; 2355 * @changed bitfield (see &enum wiphy_params_flags) describes which values 2356 * have changed. The actual parameter values are available in 2357 * struct wiphy. If returning an error, no value should be changed. 2358 * 2359 * @set_tx_power: set the transmit power according to the parameters, 2360 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). The 2361 * wdev may be %NULL if power was set for the wiphy, and will 2362 * always be %NULL unless the driver supports per-vif TX power 2363 * (as advertised by the nl80211 feature flag.) 2364 * @get_tx_power: store the current TX power into the dbm variable; 2365 * return 0 if successful 2366 * 2367 * @set_wds_peer: set the WDS peer for a WDS interface 2368 * 2369 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 2370 * functions to adjust rfkill hw state 2371 * 2372 * @dump_survey: get site survey information. 2373 * 2374 * @remain_on_channel: Request the driver to remain awake on the specified 2375 * channel for the specified duration to complete an off-channel 2376 * operation (e.g., public action frame exchange). When the driver is 2377 * ready on the requested channel, it must indicate this with an event 2378 * notification by calling cfg80211_ready_on_channel(). 2379 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 2380 * This allows the operation to be terminated prior to timeout based on 2381 * the duration value. 2382 * @mgmt_tx: Transmit a management frame. 2383 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 2384 * frame on another channel 2385 * 2386 * @testmode_cmd: run a test mode command; @wdev may be %NULL 2387 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 2388 * used by the function, but 0 and 1 must not be touched. Additionally, 2389 * return error codes other than -ENOBUFS and -ENOENT will terminate the 2390 * dump and return to userspace with an error, so be careful. If any data 2391 * was passed in from userspace then the data/len arguments will be present 2392 * and point to the data contained in %NL80211_ATTR_TESTDATA. 2393 * 2394 * @set_bitrate_mask: set the bitrate mask configuration 2395 * 2396 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 2397 * devices running firmwares capable of generating the (re) association 2398 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 2399 * @del_pmksa: Delete a cached PMKID. 2400 * @flush_pmksa: Flush all cached PMKIDs. 2401 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 2402 * allows the driver to adjust the dynamic ps timeout value. 2403 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 2404 * After configuration, the driver should (soon) send an event indicating 2405 * the current level is above/below the configured threshold; this may 2406 * need some care when the configuration is changed (without first being 2407 * disabled.) 2408 * @set_cqm_txe_config: Configure connection quality monitor TX error 2409 * thresholds. 2410 * @sched_scan_start: Tell the driver to start a scheduled scan. 2411 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. This 2412 * call must stop the scheduled scan and be ready for starting a new one 2413 * before it returns, i.e. @sched_scan_start may be called immediately 2414 * after that again and should not fail in that case. The driver should 2415 * not call cfg80211_sched_scan_stopped() for a requested stop (when this 2416 * method returns 0.) 2417 * 2418 * @mgmt_frame_register: Notify driver that a management frame type was 2419 * registered. The callback is allowed to sleep. 2420 * 2421 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2422 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2423 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2424 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2425 * 2426 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2427 * 2428 * @tdls_mgmt: Transmit a TDLS management frame. 2429 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 2430 * 2431 * @probe_client: probe an associated client, must return a cookie that it 2432 * later passes to cfg80211_probe_status(). 2433 * 2434 * @set_noack_map: Set the NoAck Map for the TIDs. 2435 * 2436 * @get_channel: Get the current operating channel for the virtual interface. 2437 * For monitor interfaces, it should return %NULL unless there's a single 2438 * current monitoring channel. 2439 * 2440 * @start_p2p_device: Start the given P2P device. 2441 * @stop_p2p_device: Stop the given P2P device. 2442 * 2443 * @set_mac_acl: Sets MAC address control list in AP and P2P GO mode. 2444 * Parameters include ACL policy, an array of MAC address of stations 2445 * and the number of MAC addresses. If there is already a list in driver 2446 * this new list replaces the existing one. Driver has to clear its ACL 2447 * when number of MAC addresses entries is passed as 0. Drivers which 2448 * advertise the support for MAC based ACL have to implement this callback. 2449 * 2450 * @start_radar_detection: Start radar detection in the driver. 2451 * 2452 * @update_ft_ies: Provide updated Fast BSS Transition information to the 2453 * driver. If the SME is in the driver/firmware, this information can be 2454 * used in building Authentication and Reassociation Request frames. 2455 * 2456 * @crit_proto_start: Indicates a critical protocol needs more link reliability 2457 * for a given duration (milliseconds). The protocol is provided so the 2458 * driver can take the most appropriate actions. 2459 * @crit_proto_stop: Indicates critical protocol no longer needs increased link 2460 * reliability. This operation can not fail. 2461 * @set_coalesce: Set coalesce parameters. 2462 * 2463 * @channel_switch: initiate channel-switch procedure (with CSA). Driver is 2464 * responsible for veryfing if the switch is possible. Since this is 2465 * inherently tricky driver may decide to disconnect an interface later 2466 * with cfg80211_stop_iface(). This doesn't mean driver can accept 2467 * everything. It should do it's best to verify requests and reject them 2468 * as soon as possible. 2469 * 2470 * @set_qos_map: Set QoS mapping information to the driver 2471 * 2472 * @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the 2473 * given interface This is used e.g. for dynamic HT 20/40 MHz channel width 2474 * changes during the lifetime of the BSS. 2475 * 2476 * @add_tx_ts: validate (if admitted_time is 0) or add a TX TS to the device 2477 * with the given parameters; action frame exchange has been handled by 2478 * userspace so this just has to modify the TX path to take the TS into 2479 * account. 2480 * If the admitted time is 0 just validate the parameters to make sure 2481 * the session can be created at all; it is valid to just always return 2482 * success for that but that may result in inefficient behaviour (handshake 2483 * with the peer followed by immediate teardown when the addition is later 2484 * rejected) 2485 * @del_tx_ts: remove an existing TX TS 2486 * 2487 * @join_ocb: join the OCB network with the specified parameters 2488 * (invoked with the wireless_dev mutex held) 2489 * @leave_ocb: leave the current OCB network 2490 * (invoked with the wireless_dev mutex held) 2491 * 2492 * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver 2493 * is responsible for continually initiating channel-switching operations 2494 * and returning to the base channel for communication with the AP. 2495 * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both 2496 * peers must be on the base channel when the call completes. 2497 */ 2498 struct cfg80211_ops { 2499 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 2500 int (*resume)(struct wiphy *wiphy); 2501 void (*set_wakeup)(struct wiphy *wiphy, bool enabled); 2502 2503 struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy, 2504 const char *name, 2505 unsigned char name_assign_type, 2506 enum nl80211_iftype type, 2507 u32 *flags, 2508 struct vif_params *params); 2509 int (*del_virtual_intf)(struct wiphy *wiphy, 2510 struct wireless_dev *wdev); 2511 int (*change_virtual_intf)(struct wiphy *wiphy, 2512 struct net_device *dev, 2513 enum nl80211_iftype type, u32 *flags, 2514 struct vif_params *params); 2515 2516 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 2517 u8 key_index, bool pairwise, const u8 *mac_addr, 2518 struct key_params *params); 2519 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 2520 u8 key_index, bool pairwise, const u8 *mac_addr, 2521 void *cookie, 2522 void (*callback)(void *cookie, struct key_params*)); 2523 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 2524 u8 key_index, bool pairwise, const u8 *mac_addr); 2525 int (*set_default_key)(struct wiphy *wiphy, 2526 struct net_device *netdev, 2527 u8 key_index, bool unicast, bool multicast); 2528 int (*set_default_mgmt_key)(struct wiphy *wiphy, 2529 struct net_device *netdev, 2530 u8 key_index); 2531 2532 int (*start_ap)(struct wiphy *wiphy, struct net_device *dev, 2533 struct cfg80211_ap_settings *settings); 2534 int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev, 2535 struct cfg80211_beacon_data *info); 2536 int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev); 2537 2538 2539 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 2540 const u8 *mac, 2541 struct station_parameters *params); 2542 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 2543 struct station_del_parameters *params); 2544 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 2545 const u8 *mac, 2546 struct station_parameters *params); 2547 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 2548 const u8 *mac, struct station_info *sinfo); 2549 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 2550 int idx, u8 *mac, struct station_info *sinfo); 2551 2552 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 2553 const u8 *dst, const u8 *next_hop); 2554 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 2555 const u8 *dst); 2556 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 2557 const u8 *dst, const u8 *next_hop); 2558 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 2559 u8 *dst, u8 *next_hop, struct mpath_info *pinfo); 2560 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 2561 int idx, u8 *dst, u8 *next_hop, 2562 struct mpath_info *pinfo); 2563 int (*get_mpp)(struct wiphy *wiphy, struct net_device *dev, 2564 u8 *dst, u8 *mpp, struct mpath_info *pinfo); 2565 int (*dump_mpp)(struct wiphy *wiphy, struct net_device *dev, 2566 int idx, u8 *dst, u8 *mpp, 2567 struct mpath_info *pinfo); 2568 int (*get_mesh_config)(struct wiphy *wiphy, 2569 struct net_device *dev, 2570 struct mesh_config *conf); 2571 int (*update_mesh_config)(struct wiphy *wiphy, 2572 struct net_device *dev, u32 mask, 2573 const struct mesh_config *nconf); 2574 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 2575 const struct mesh_config *conf, 2576 const struct mesh_setup *setup); 2577 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 2578 2579 int (*join_ocb)(struct wiphy *wiphy, struct net_device *dev, 2580 struct ocb_setup *setup); 2581 int (*leave_ocb)(struct wiphy *wiphy, struct net_device *dev); 2582 2583 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 2584 struct bss_parameters *params); 2585 2586 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 2587 struct ieee80211_txq_params *params); 2588 2589 int (*libertas_set_mesh_channel)(struct wiphy *wiphy, 2590 struct net_device *dev, 2591 struct ieee80211_channel *chan); 2592 2593 int (*set_monitor_channel)(struct wiphy *wiphy, 2594 struct cfg80211_chan_def *chandef); 2595 2596 int (*scan)(struct wiphy *wiphy, 2597 struct cfg80211_scan_request *request); 2598 void (*abort_scan)(struct wiphy *wiphy, struct wireless_dev *wdev); 2599 2600 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 2601 struct cfg80211_auth_request *req); 2602 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 2603 struct cfg80211_assoc_request *req); 2604 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 2605 struct cfg80211_deauth_request *req); 2606 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 2607 struct cfg80211_disassoc_request *req); 2608 2609 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 2610 struct cfg80211_connect_params *sme); 2611 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 2612 u16 reason_code); 2613 2614 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 2615 struct cfg80211_ibss_params *params); 2616 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 2617 2618 int (*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev, 2619 int rate[IEEE80211_NUM_BANDS]); 2620 2621 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 2622 2623 int (*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2624 enum nl80211_tx_power_setting type, int mbm); 2625 int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2626 int *dbm); 2627 2628 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 2629 const u8 *addr); 2630 2631 void (*rfkill_poll)(struct wiphy *wiphy); 2632 2633 #ifdef CONFIG_NL80211_TESTMODE 2634 int (*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev, 2635 void *data, int len); 2636 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 2637 struct netlink_callback *cb, 2638 void *data, int len); 2639 #endif 2640 2641 int (*set_bitrate_mask)(struct wiphy *wiphy, 2642 struct net_device *dev, 2643 const u8 *peer, 2644 const struct cfg80211_bitrate_mask *mask); 2645 2646 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 2647 int idx, struct survey_info *info); 2648 2649 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2650 struct cfg80211_pmksa *pmksa); 2651 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2652 struct cfg80211_pmksa *pmksa); 2653 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 2654 2655 int (*remain_on_channel)(struct wiphy *wiphy, 2656 struct wireless_dev *wdev, 2657 struct ieee80211_channel *chan, 2658 unsigned int duration, 2659 u64 *cookie); 2660 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 2661 struct wireless_dev *wdev, 2662 u64 cookie); 2663 2664 int (*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev, 2665 struct cfg80211_mgmt_tx_params *params, 2666 u64 *cookie); 2667 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 2668 struct wireless_dev *wdev, 2669 u64 cookie); 2670 2671 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2672 bool enabled, int timeout); 2673 2674 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 2675 struct net_device *dev, 2676 s32 rssi_thold, u32 rssi_hyst); 2677 2678 int (*set_cqm_txe_config)(struct wiphy *wiphy, 2679 struct net_device *dev, 2680 u32 rate, u32 pkts, u32 intvl); 2681 2682 void (*mgmt_frame_register)(struct wiphy *wiphy, 2683 struct wireless_dev *wdev, 2684 u16 frame_type, bool reg); 2685 2686 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 2687 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 2688 2689 int (*sched_scan_start)(struct wiphy *wiphy, 2690 struct net_device *dev, 2691 struct cfg80211_sched_scan_request *request); 2692 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 2693 2694 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 2695 struct cfg80211_gtk_rekey_data *data); 2696 2697 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2698 const u8 *peer, u8 action_code, u8 dialog_token, 2699 u16 status_code, u32 peer_capability, 2700 bool initiator, const u8 *buf, size_t len); 2701 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 2702 const u8 *peer, enum nl80211_tdls_operation oper); 2703 2704 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 2705 const u8 *peer, u64 *cookie); 2706 2707 int (*set_noack_map)(struct wiphy *wiphy, 2708 struct net_device *dev, 2709 u16 noack_map); 2710 2711 int (*get_channel)(struct wiphy *wiphy, 2712 struct wireless_dev *wdev, 2713 struct cfg80211_chan_def *chandef); 2714 2715 int (*start_p2p_device)(struct wiphy *wiphy, 2716 struct wireless_dev *wdev); 2717 void (*stop_p2p_device)(struct wiphy *wiphy, 2718 struct wireless_dev *wdev); 2719 2720 int (*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev, 2721 const struct cfg80211_acl_data *params); 2722 2723 int (*start_radar_detection)(struct wiphy *wiphy, 2724 struct net_device *dev, 2725 struct cfg80211_chan_def *chandef, 2726 u32 cac_time_ms); 2727 int (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev, 2728 struct cfg80211_update_ft_ies_params *ftie); 2729 int (*crit_proto_start)(struct wiphy *wiphy, 2730 struct wireless_dev *wdev, 2731 enum nl80211_crit_proto_id protocol, 2732 u16 duration); 2733 void (*crit_proto_stop)(struct wiphy *wiphy, 2734 struct wireless_dev *wdev); 2735 int (*set_coalesce)(struct wiphy *wiphy, 2736 struct cfg80211_coalesce *coalesce); 2737 2738 int (*channel_switch)(struct wiphy *wiphy, 2739 struct net_device *dev, 2740 struct cfg80211_csa_settings *params); 2741 2742 int (*set_qos_map)(struct wiphy *wiphy, 2743 struct net_device *dev, 2744 struct cfg80211_qos_map *qos_map); 2745 2746 int (*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev, 2747 struct cfg80211_chan_def *chandef); 2748 2749 int (*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2750 u8 tsid, const u8 *peer, u8 user_prio, 2751 u16 admitted_time); 2752 int (*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2753 u8 tsid, const u8 *peer); 2754 2755 int (*tdls_channel_switch)(struct wiphy *wiphy, 2756 struct net_device *dev, 2757 const u8 *addr, u8 oper_class, 2758 struct cfg80211_chan_def *chandef); 2759 void (*tdls_cancel_channel_switch)(struct wiphy *wiphy, 2760 struct net_device *dev, 2761 const u8 *addr); 2762 }; 2763 2764 /* 2765 * wireless hardware and networking interfaces structures 2766 * and registration/helper functions 2767 */ 2768 2769 /** 2770 * enum wiphy_flags - wiphy capability flags 2771 * 2772 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 2773 * wiphy at all 2774 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 2775 * by default -- this flag will be set depending on the kernel's default 2776 * on wiphy_new(), but can be changed by the driver if it has a good 2777 * reason to override the default 2778 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 2779 * on a VLAN interface) 2780 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 2781 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 2782 * control port protocol ethertype. The device also honours the 2783 * control_port_no_encrypt flag. 2784 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 2785 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 2786 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 2787 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 2788 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 2789 * firmware. 2790 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 2791 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 2792 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 2793 * link setup/discovery operations internally. Setup, discovery and 2794 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 2795 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 2796 * used for asking the driver/firmware to perform a TDLS operation. 2797 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 2798 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 2799 * when there are virtual interfaces in AP mode by calling 2800 * cfg80211_report_obss_beacon(). 2801 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 2802 * responds to probe-requests in hardware. 2803 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 2804 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 2805 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels. 2806 * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in 2807 * beaconing mode (AP, IBSS, Mesh, ...). 2808 */ 2809 enum wiphy_flags { 2810 /* use hole at 0 */ 2811 /* use hole at 1 */ 2812 /* use hole at 2 */ 2813 WIPHY_FLAG_NETNS_OK = BIT(3), 2814 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 2815 WIPHY_FLAG_4ADDR_AP = BIT(5), 2816 WIPHY_FLAG_4ADDR_STATION = BIT(6), 2817 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 2818 WIPHY_FLAG_IBSS_RSN = BIT(8), 2819 WIPHY_FLAG_MESH_AUTH = BIT(10), 2820 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 2821 /* use hole at 12 */ 2822 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 2823 WIPHY_FLAG_AP_UAPSD = BIT(14), 2824 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 2825 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 2826 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 2827 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 2828 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 2829 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 2830 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 2831 WIPHY_FLAG_SUPPORTS_5_10_MHZ = BIT(22), 2832 WIPHY_FLAG_HAS_CHANNEL_SWITCH = BIT(23), 2833 }; 2834 2835 /** 2836 * struct ieee80211_iface_limit - limit on certain interface types 2837 * @max: maximum number of interfaces of these types 2838 * @types: interface types (bits) 2839 */ 2840 struct ieee80211_iface_limit { 2841 u16 max; 2842 u16 types; 2843 }; 2844 2845 /** 2846 * struct ieee80211_iface_combination - possible interface combination 2847 * @limits: limits for the given interface types 2848 * @n_limits: number of limitations 2849 * @num_different_channels: can use up to this many different channels 2850 * @max_interfaces: maximum number of interfaces in total allowed in this 2851 * group 2852 * @beacon_int_infra_match: In this combination, the beacon intervals 2853 * between infrastructure and AP types must match. This is required 2854 * only in special cases. 2855 * @radar_detect_widths: bitmap of channel widths supported for radar detection 2856 * @radar_detect_regions: bitmap of regions supported for radar detection 2857 * 2858 * With this structure the driver can describe which interface 2859 * combinations it supports concurrently. 2860 * 2861 * Examples: 2862 * 2863 * 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 2864 * 2865 * struct ieee80211_iface_limit limits1[] = { 2866 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2867 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 2868 * }; 2869 * struct ieee80211_iface_combination combination1 = { 2870 * .limits = limits1, 2871 * .n_limits = ARRAY_SIZE(limits1), 2872 * .max_interfaces = 2, 2873 * .beacon_int_infra_match = true, 2874 * }; 2875 * 2876 * 2877 * 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 2878 * 2879 * struct ieee80211_iface_limit limits2[] = { 2880 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 2881 * BIT(NL80211_IFTYPE_P2P_GO), }, 2882 * }; 2883 * struct ieee80211_iface_combination combination2 = { 2884 * .limits = limits2, 2885 * .n_limits = ARRAY_SIZE(limits2), 2886 * .max_interfaces = 8, 2887 * .num_different_channels = 1, 2888 * }; 2889 * 2890 * 2891 * 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 2892 * 2893 * This allows for an infrastructure connection and three P2P connections. 2894 * 2895 * struct ieee80211_iface_limit limits3[] = { 2896 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2897 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 2898 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 2899 * }; 2900 * struct ieee80211_iface_combination combination3 = { 2901 * .limits = limits3, 2902 * .n_limits = ARRAY_SIZE(limits3), 2903 * .max_interfaces = 4, 2904 * .num_different_channels = 2, 2905 * }; 2906 */ 2907 struct ieee80211_iface_combination { 2908 const struct ieee80211_iface_limit *limits; 2909 u32 num_different_channels; 2910 u16 max_interfaces; 2911 u8 n_limits; 2912 bool beacon_int_infra_match; 2913 u8 radar_detect_widths; 2914 u8 radar_detect_regions; 2915 }; 2916 2917 struct ieee80211_txrx_stypes { 2918 u16 tx, rx; 2919 }; 2920 2921 /** 2922 * enum wiphy_wowlan_support_flags - WoWLAN support flags 2923 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 2924 * trigger that keeps the device operating as-is and 2925 * wakes up the host on any activity, for example a 2926 * received packet that passed filtering; note that the 2927 * packet should be preserved in that case 2928 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 2929 * (see nl80211.h) 2930 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 2931 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 2932 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 2933 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 2934 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 2935 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 2936 * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection 2937 */ 2938 enum wiphy_wowlan_support_flags { 2939 WIPHY_WOWLAN_ANY = BIT(0), 2940 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 2941 WIPHY_WOWLAN_DISCONNECT = BIT(2), 2942 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 2943 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 2944 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 2945 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 2946 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 2947 WIPHY_WOWLAN_NET_DETECT = BIT(8), 2948 }; 2949 2950 struct wiphy_wowlan_tcp_support { 2951 const struct nl80211_wowlan_tcp_data_token_feature *tok; 2952 u32 data_payload_max; 2953 u32 data_interval_max; 2954 u32 wake_payload_max; 2955 bool seq; 2956 }; 2957 2958 /** 2959 * struct wiphy_wowlan_support - WoWLAN support data 2960 * @flags: see &enum wiphy_wowlan_support_flags 2961 * @n_patterns: number of supported wakeup patterns 2962 * (see nl80211.h for the pattern definition) 2963 * @pattern_max_len: maximum length of each pattern 2964 * @pattern_min_len: minimum length of each pattern 2965 * @max_pkt_offset: maximum Rx packet offset 2966 * @max_nd_match_sets: maximum number of matchsets for net-detect, 2967 * similar, but not necessarily identical, to max_match_sets for 2968 * scheduled scans. 2969 * See &struct cfg80211_sched_scan_request.@match_sets for more 2970 * details. 2971 * @tcp: TCP wakeup support information 2972 */ 2973 struct wiphy_wowlan_support { 2974 u32 flags; 2975 int n_patterns; 2976 int pattern_max_len; 2977 int pattern_min_len; 2978 int max_pkt_offset; 2979 int max_nd_match_sets; 2980 const struct wiphy_wowlan_tcp_support *tcp; 2981 }; 2982 2983 /** 2984 * struct wiphy_coalesce_support - coalesce support data 2985 * @n_rules: maximum number of coalesce rules 2986 * @max_delay: maximum supported coalescing delay in msecs 2987 * @n_patterns: number of supported patterns in a rule 2988 * (see nl80211.h for the pattern definition) 2989 * @pattern_max_len: maximum length of each pattern 2990 * @pattern_min_len: minimum length of each pattern 2991 * @max_pkt_offset: maximum Rx packet offset 2992 */ 2993 struct wiphy_coalesce_support { 2994 int n_rules; 2995 int max_delay; 2996 int n_patterns; 2997 int pattern_max_len; 2998 int pattern_min_len; 2999 int max_pkt_offset; 3000 }; 3001 3002 /** 3003 * enum wiphy_vendor_command_flags - validation flags for vendor commands 3004 * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev 3005 * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev 3006 * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running 3007 * (must be combined with %_WDEV or %_NETDEV) 3008 */ 3009 enum wiphy_vendor_command_flags { 3010 WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0), 3011 WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1), 3012 WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2), 3013 }; 3014 3015 /** 3016 * struct wiphy_vendor_command - vendor command definition 3017 * @info: vendor command identifying information, as used in nl80211 3018 * @flags: flags, see &enum wiphy_vendor_command_flags 3019 * @doit: callback for the operation, note that wdev is %NULL if the 3020 * flags didn't ask for a wdev and non-%NULL otherwise; the data 3021 * pointer may be %NULL if userspace provided no data at all 3022 * @dumpit: dump callback, for transferring bigger/multiple items. The 3023 * @storage points to cb->args[5], ie. is preserved over the multiple 3024 * dumpit calls. 3025 * It's recommended to not have the same sub command with both @doit and 3026 * @dumpit, so that userspace can assume certain ones are get and others 3027 * are used with dump requests. 3028 */ 3029 struct wiphy_vendor_command { 3030 struct nl80211_vendor_cmd_info info; 3031 u32 flags; 3032 int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev, 3033 const void *data, int data_len); 3034 int (*dumpit)(struct wiphy *wiphy, struct wireless_dev *wdev, 3035 struct sk_buff *skb, const void *data, int data_len, 3036 unsigned long *storage); 3037 }; 3038 3039 /** 3040 * struct wiphy - wireless hardware description 3041 * @reg_notifier: the driver's regulatory notification callback, 3042 * note that if your driver uses wiphy_apply_custom_regulatory() 3043 * the reg_notifier's request can be passed as NULL 3044 * @regd: the driver's regulatory domain, if one was requested via 3045 * the regulatory_hint() API. This can be used by the driver 3046 * on the reg_notifier() if it chooses to ignore future 3047 * regulatory domain changes caused by other drivers. 3048 * @signal_type: signal type reported in &struct cfg80211_bss. 3049 * @cipher_suites: supported cipher suites 3050 * @n_cipher_suites: number of supported cipher suites 3051 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 3052 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 3053 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 3054 * -1 = fragmentation disabled, only odd values >= 256 used 3055 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 3056 * @_net: the network namespace this wiphy currently lives in 3057 * @perm_addr: permanent MAC address of this device 3058 * @addr_mask: If the device supports multiple MAC addresses by masking, 3059 * set this to a mask with variable bits set to 1, e.g. if the last 3060 * four bits are variable then set it to 00-00-00-00-00-0f. The actual 3061 * variable bits shall be determined by the interfaces added, with 3062 * interfaces not matching the mask being rejected to be brought up. 3063 * @n_addresses: number of addresses in @addresses. 3064 * @addresses: If the device has more than one address, set this pointer 3065 * to a list of addresses (6 bytes each). The first one will be used 3066 * by default for perm_addr. In this case, the mask should be set to 3067 * all-zeroes. In this case it is assumed that the device can handle 3068 * the same number of arbitrary MAC addresses. 3069 * @registered: protects ->resume and ->suspend sysfs callbacks against 3070 * unregister hardware 3071 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 3072 * automatically on wiphy renames 3073 * @dev: (virtual) struct device for this wiphy 3074 * @registered: helps synchronize suspend/resume with wiphy unregister 3075 * @wext: wireless extension handlers 3076 * @priv: driver private data (sized according to wiphy_new() parameter) 3077 * @interface_modes: bitmask of interfaces types valid for this wiphy, 3078 * must be set by driver 3079 * @iface_combinations: Valid interface combinations array, should not 3080 * list single interface types. 3081 * @n_iface_combinations: number of entries in @iface_combinations array. 3082 * @software_iftypes: bitmask of software interface types, these are not 3083 * subject to any restrictions since they are purely managed in SW. 3084 * @flags: wiphy flags, see &enum wiphy_flags 3085 * @regulatory_flags: wiphy regulatory flags, see 3086 * &enum ieee80211_regulatory_flags 3087 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 3088 * @ext_features: extended features advertised to nl80211, see 3089 * &enum nl80211_ext_feature_index. 3090 * @bss_priv_size: each BSS struct has private data allocated with it, 3091 * this variable determines its size 3092 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 3093 * any given scan 3094 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 3095 * for in any given scheduled scan 3096 * @max_match_sets: maximum number of match sets the device can handle 3097 * when performing a scheduled scan, 0 if filtering is not 3098 * supported. 3099 * @max_scan_ie_len: maximum length of user-controlled IEs device can 3100 * add to probe request frames transmitted during a scan, must not 3101 * include fixed IEs like supported rates 3102 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 3103 * scans 3104 * @max_sched_scan_plans: maximum number of scan plans (scan interval and number 3105 * of iterations) for scheduled scan supported by the device. 3106 * @max_sched_scan_plan_interval: maximum interval (in seconds) for a 3107 * single scan plan supported by the device. 3108 * @max_sched_scan_plan_iterations: maximum number of iterations for a single 3109 * scan plan supported by the device. 3110 * @coverage_class: current coverage class 3111 * @fw_version: firmware version for ethtool reporting 3112 * @hw_version: hardware version for ethtool reporting 3113 * @max_num_pmkids: maximum number of PMKIDs supported by device 3114 * @privid: a pointer that drivers can use to identify if an arbitrary 3115 * wiphy is theirs, e.g. in global notifiers 3116 * @bands: information about bands/channels supported by this device 3117 * 3118 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 3119 * transmitted through nl80211, points to an array indexed by interface 3120 * type 3121 * 3122 * @available_antennas_tx: bitmap of antennas which are available to be 3123 * configured as TX antennas. Antenna configuration commands will be 3124 * rejected unless this or @available_antennas_rx is set. 3125 * 3126 * @available_antennas_rx: bitmap of antennas which are available to be 3127 * configured as RX antennas. Antenna configuration commands will be 3128 * rejected unless this or @available_antennas_tx is set. 3129 * 3130 * @probe_resp_offload: 3131 * Bitmap of supported protocols for probe response offloading. 3132 * See &enum nl80211_probe_resp_offload_support_attr. Only valid 3133 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3134 * 3135 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 3136 * may request, if implemented. 3137 * 3138 * @wowlan: WoWLAN support information 3139 * @wowlan_config: current WoWLAN configuration; this should usually not be 3140 * used since access to it is necessarily racy, use the parameter passed 3141 * to the suspend() operation instead. 3142 * 3143 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 3144 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 3145 * If null, then none can be over-ridden. 3146 * @vht_capa_mod_mask: Specify what VHT capabilities can be over-ridden. 3147 * If null, then none can be over-ridden. 3148 * 3149 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device 3150 * supports for ACL. 3151 * 3152 * @extended_capabilities: extended capabilities supported by the driver, 3153 * additional capabilities might be supported by userspace; these are 3154 * the 802.11 extended capabilities ("Extended Capabilities element") 3155 * and are in the same format as in the information element. See 3156 * 802.11-2012 8.4.2.29 for the defined fields. 3157 * @extended_capabilities_mask: mask of the valid values 3158 * @extended_capabilities_len: length of the extended capabilities 3159 * @coalesce: packet coalescing support information 3160 * 3161 * @vendor_commands: array of vendor commands supported by the hardware 3162 * @n_vendor_commands: number of vendor commands 3163 * @vendor_events: array of vendor events supported by the hardware 3164 * @n_vendor_events: number of vendor events 3165 * 3166 * @max_ap_assoc_sta: maximum number of associated stations supported in AP mode 3167 * (including P2P GO) or 0 to indicate no such limit is advertised. The 3168 * driver is allowed to advertise a theoretical limit that it can reach in 3169 * some cases, but may not always reach. 3170 * 3171 * @max_num_csa_counters: Number of supported csa_counters in beacons 3172 * and probe responses. This value should be set if the driver 3173 * wishes to limit the number of csa counters. Default (0) means 3174 * infinite. 3175 * @max_adj_channel_rssi_comp: max offset of between the channel on which the 3176 * frame was sent and the channel on which the frame was heard for which 3177 * the reported rssi is still valid. If a driver is able to compensate the 3178 * low rssi when a frame is heard on different channel, then it should set 3179 * this variable to the maximal offset for which it can compensate. 3180 * This value should be set in MHz. 3181 */ 3182 struct wiphy { 3183 /* assign these fields before you register the wiphy */ 3184 3185 /* permanent MAC address(es) */ 3186 u8 perm_addr[ETH_ALEN]; 3187 u8 addr_mask[ETH_ALEN]; 3188 3189 struct mac_address *addresses; 3190 3191 const struct ieee80211_txrx_stypes *mgmt_stypes; 3192 3193 const struct ieee80211_iface_combination *iface_combinations; 3194 int n_iface_combinations; 3195 u16 software_iftypes; 3196 3197 u16 n_addresses; 3198 3199 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 3200 u16 interface_modes; 3201 3202 u16 max_acl_mac_addrs; 3203 3204 u32 flags, regulatory_flags, features; 3205 u8 ext_features[DIV_ROUND_UP(NUM_NL80211_EXT_FEATURES, 8)]; 3206 3207 u32 ap_sme_capa; 3208 3209 enum cfg80211_signal_type signal_type; 3210 3211 int bss_priv_size; 3212 u8 max_scan_ssids; 3213 u8 max_sched_scan_ssids; 3214 u8 max_match_sets; 3215 u16 max_scan_ie_len; 3216 u16 max_sched_scan_ie_len; 3217 u32 max_sched_scan_plans; 3218 u32 max_sched_scan_plan_interval; 3219 u32 max_sched_scan_plan_iterations; 3220 3221 int n_cipher_suites; 3222 const u32 *cipher_suites; 3223 3224 u8 retry_short; 3225 u8 retry_long; 3226 u32 frag_threshold; 3227 u32 rts_threshold; 3228 u8 coverage_class; 3229 3230 char fw_version[ETHTOOL_FWVERS_LEN]; 3231 u32 hw_version; 3232 3233 #ifdef CONFIG_PM 3234 const struct wiphy_wowlan_support *wowlan; 3235 struct cfg80211_wowlan *wowlan_config; 3236 #endif 3237 3238 u16 max_remain_on_channel_duration; 3239 3240 u8 max_num_pmkids; 3241 3242 u32 available_antennas_tx; 3243 u32 available_antennas_rx; 3244 3245 /* 3246 * Bitmap of supported protocols for probe response offloading 3247 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 3248 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3249 */ 3250 u32 probe_resp_offload; 3251 3252 const u8 *extended_capabilities, *extended_capabilities_mask; 3253 u8 extended_capabilities_len; 3254 3255 /* If multiple wiphys are registered and you're handed e.g. 3256 * a regular netdev with assigned ieee80211_ptr, you won't 3257 * know whether it points to a wiphy your driver has registered 3258 * or not. Assign this to something global to your driver to 3259 * help determine whether you own this wiphy or not. */ 3260 const void *privid; 3261 3262 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 3263 3264 /* Lets us get back the wiphy on the callback */ 3265 void (*reg_notifier)(struct wiphy *wiphy, 3266 struct regulatory_request *request); 3267 3268 /* fields below are read-only, assigned by cfg80211 */ 3269 3270 const struct ieee80211_regdomain __rcu *regd; 3271 3272 /* the item in /sys/class/ieee80211/ points to this, 3273 * you need use set_wiphy_dev() (see below) */ 3274 struct device dev; 3275 3276 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 3277 bool registered; 3278 3279 /* dir in debugfs: ieee80211/<wiphyname> */ 3280 struct dentry *debugfsdir; 3281 3282 const struct ieee80211_ht_cap *ht_capa_mod_mask; 3283 const struct ieee80211_vht_cap *vht_capa_mod_mask; 3284 3285 /* the network namespace this phy lives in currently */ 3286 possible_net_t _net; 3287 3288 #ifdef CONFIG_CFG80211_WEXT 3289 const struct iw_handler_def *wext; 3290 #endif 3291 3292 const struct wiphy_coalesce_support *coalesce; 3293 3294 const struct wiphy_vendor_command *vendor_commands; 3295 const struct nl80211_vendor_cmd_info *vendor_events; 3296 int n_vendor_commands, n_vendor_events; 3297 3298 u16 max_ap_assoc_sta; 3299 3300 u8 max_num_csa_counters; 3301 u8 max_adj_channel_rssi_comp; 3302 3303 char priv[0] __aligned(NETDEV_ALIGN); 3304 }; 3305 3306 static inline struct net *wiphy_net(struct wiphy *wiphy) 3307 { 3308 return read_pnet(&wiphy->_net); 3309 } 3310 3311 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 3312 { 3313 write_pnet(&wiphy->_net, net); 3314 } 3315 3316 /** 3317 * wiphy_priv - return priv from wiphy 3318 * 3319 * @wiphy: the wiphy whose priv pointer to return 3320 * Return: The priv of @wiphy. 3321 */ 3322 static inline void *wiphy_priv(struct wiphy *wiphy) 3323 { 3324 BUG_ON(!wiphy); 3325 return &wiphy->priv; 3326 } 3327 3328 /** 3329 * priv_to_wiphy - return the wiphy containing the priv 3330 * 3331 * @priv: a pointer previously returned by wiphy_priv 3332 * Return: The wiphy of @priv. 3333 */ 3334 static inline struct wiphy *priv_to_wiphy(void *priv) 3335 { 3336 BUG_ON(!priv); 3337 return container_of(priv, struct wiphy, priv); 3338 } 3339 3340 /** 3341 * set_wiphy_dev - set device pointer for wiphy 3342 * 3343 * @wiphy: The wiphy whose device to bind 3344 * @dev: The device to parent it to 3345 */ 3346 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 3347 { 3348 wiphy->dev.parent = dev; 3349 } 3350 3351 /** 3352 * wiphy_dev - get wiphy dev pointer 3353 * 3354 * @wiphy: The wiphy whose device struct to look up 3355 * Return: The dev of @wiphy. 3356 */ 3357 static inline struct device *wiphy_dev(struct wiphy *wiphy) 3358 { 3359 return wiphy->dev.parent; 3360 } 3361 3362 /** 3363 * wiphy_name - get wiphy name 3364 * 3365 * @wiphy: The wiphy whose name to return 3366 * Return: The name of @wiphy. 3367 */ 3368 static inline const char *wiphy_name(const struct wiphy *wiphy) 3369 { 3370 return dev_name(&wiphy->dev); 3371 } 3372 3373 /** 3374 * wiphy_new_nm - create a new wiphy for use with cfg80211 3375 * 3376 * @ops: The configuration operations for this device 3377 * @sizeof_priv: The size of the private area to allocate 3378 * @requested_name: Request a particular name. 3379 * NULL is valid value, and means use the default phy%d naming. 3380 * 3381 * Create a new wiphy and associate the given operations with it. 3382 * @sizeof_priv bytes are allocated for private use. 3383 * 3384 * Return: A pointer to the new wiphy. This pointer must be 3385 * assigned to each netdev's ieee80211_ptr for proper operation. 3386 */ 3387 struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, 3388 const char *requested_name); 3389 3390 /** 3391 * wiphy_new - create a new wiphy for use with cfg80211 3392 * 3393 * @ops: The configuration operations for this device 3394 * @sizeof_priv: The size of the private area to allocate 3395 * 3396 * Create a new wiphy and associate the given operations with it. 3397 * @sizeof_priv bytes are allocated for private use. 3398 * 3399 * Return: A pointer to the new wiphy. This pointer must be 3400 * assigned to each netdev's ieee80211_ptr for proper operation. 3401 */ 3402 static inline struct wiphy *wiphy_new(const struct cfg80211_ops *ops, 3403 int sizeof_priv) 3404 { 3405 return wiphy_new_nm(ops, sizeof_priv, NULL); 3406 } 3407 3408 /** 3409 * wiphy_register - register a wiphy with cfg80211 3410 * 3411 * @wiphy: The wiphy to register. 3412 * 3413 * Return: A non-negative wiphy index or a negative error code. 3414 */ 3415 int wiphy_register(struct wiphy *wiphy); 3416 3417 /** 3418 * wiphy_unregister - deregister a wiphy from cfg80211 3419 * 3420 * @wiphy: The wiphy to unregister. 3421 * 3422 * After this call, no more requests can be made with this priv 3423 * pointer, but the call may sleep to wait for an outstanding 3424 * request that is being handled. 3425 */ 3426 void wiphy_unregister(struct wiphy *wiphy); 3427 3428 /** 3429 * wiphy_free - free wiphy 3430 * 3431 * @wiphy: The wiphy to free 3432 */ 3433 void wiphy_free(struct wiphy *wiphy); 3434 3435 /* internal structs */ 3436 struct cfg80211_conn; 3437 struct cfg80211_internal_bss; 3438 struct cfg80211_cached_keys; 3439 3440 /** 3441 * struct wireless_dev - wireless device state 3442 * 3443 * For netdevs, this structure must be allocated by the driver 3444 * that uses the ieee80211_ptr field in struct net_device (this 3445 * is intentional so it can be allocated along with the netdev.) 3446 * It need not be registered then as netdev registration will 3447 * be intercepted by cfg80211 to see the new wireless device. 3448 * 3449 * For non-netdev uses, it must also be allocated by the driver 3450 * in response to the cfg80211 callbacks that require it, as 3451 * there's no netdev registration in that case it may not be 3452 * allocated outside of callback operations that return it. 3453 * 3454 * @wiphy: pointer to hardware description 3455 * @iftype: interface type 3456 * @list: (private) Used to collect the interfaces 3457 * @netdev: (private) Used to reference back to the netdev, may be %NULL 3458 * @identifier: (private) Identifier used in nl80211 to identify this 3459 * wireless device if it has no netdev 3460 * @current_bss: (private) Used by the internal configuration code 3461 * @chandef: (private) Used by the internal configuration code to track 3462 * the user-set channel definition. 3463 * @preset_chandef: (private) Used by the internal configuration code to 3464 * track the channel to be used for AP later 3465 * @bssid: (private) Used by the internal configuration code 3466 * @ssid: (private) Used by the internal configuration code 3467 * @ssid_len: (private) Used by the internal configuration code 3468 * @mesh_id_len: (private) Used by the internal configuration code 3469 * @mesh_id_up_len: (private) Used by the internal configuration code 3470 * @wext: (private) Used by the internal wireless extensions compat code 3471 * @use_4addr: indicates 4addr mode is used on this interface, must be 3472 * set by driver (if supported) on add_interface BEFORE registering the 3473 * netdev and may otherwise be used by driver read-only, will be update 3474 * by cfg80211 on change_interface 3475 * @mgmt_registrations: list of registrations for management frames 3476 * @mgmt_registrations_lock: lock for the list 3477 * @mtx: mutex used to lock data in this struct, may be used by drivers 3478 * and some API functions require it held 3479 * @beacon_interval: beacon interval used on this device for transmitting 3480 * beacons, 0 when not valid 3481 * @address: The address for this device, valid only if @netdev is %NULL 3482 * @p2p_started: true if this is a P2P Device that has been started 3483 * @cac_started: true if DFS channel availability check has been started 3484 * @cac_start_time: timestamp (jiffies) when the dfs state was entered. 3485 * @cac_time_ms: CAC time in ms 3486 * @ps: powersave mode is enabled 3487 * @ps_timeout: dynamic powersave timeout 3488 * @ap_unexpected_nlportid: (private) netlink port ID of application 3489 * registered for unexpected class 3 frames (AP mode) 3490 * @conn: (private) cfg80211 software SME connection state machine data 3491 * @connect_keys: (private) keys to set after connection is established 3492 * @ibss_fixed: (private) IBSS is using fixed BSSID 3493 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel 3494 * @event_list: (private) list for internal event processing 3495 * @event_lock: (private) lock for event list 3496 * @owner_nlportid: (private) owner socket port ID 3497 */ 3498 struct wireless_dev { 3499 struct wiphy *wiphy; 3500 enum nl80211_iftype iftype; 3501 3502 /* the remainder of this struct should be private to cfg80211 */ 3503 struct list_head list; 3504 struct net_device *netdev; 3505 3506 u32 identifier; 3507 3508 struct list_head mgmt_registrations; 3509 spinlock_t mgmt_registrations_lock; 3510 3511 struct mutex mtx; 3512 3513 bool use_4addr, p2p_started; 3514 3515 u8 address[ETH_ALEN] __aligned(sizeof(u16)); 3516 3517 /* currently used for IBSS and SME - might be rearranged later */ 3518 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3519 u8 ssid_len, mesh_id_len, mesh_id_up_len; 3520 struct cfg80211_conn *conn; 3521 struct cfg80211_cached_keys *connect_keys; 3522 3523 struct list_head event_list; 3524 spinlock_t event_lock; 3525 3526 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 3527 struct cfg80211_chan_def preset_chandef; 3528 struct cfg80211_chan_def chandef; 3529 3530 bool ibss_fixed; 3531 bool ibss_dfs_possible; 3532 3533 bool ps; 3534 int ps_timeout; 3535 3536 int beacon_interval; 3537 3538 u32 ap_unexpected_nlportid; 3539 3540 bool cac_started; 3541 unsigned long cac_start_time; 3542 unsigned int cac_time_ms; 3543 3544 u32 owner_nlportid; 3545 3546 #ifdef CONFIG_CFG80211_WEXT 3547 /* wext data */ 3548 struct { 3549 struct cfg80211_ibss_params ibss; 3550 struct cfg80211_connect_params connect; 3551 struct cfg80211_cached_keys *keys; 3552 const u8 *ie; 3553 size_t ie_len; 3554 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 3555 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3556 s8 default_key, default_mgmt_key; 3557 bool prev_bssid_valid; 3558 } wext; 3559 #endif 3560 }; 3561 3562 static inline u8 *wdev_address(struct wireless_dev *wdev) 3563 { 3564 if (wdev->netdev) 3565 return wdev->netdev->dev_addr; 3566 return wdev->address; 3567 } 3568 3569 /** 3570 * wdev_priv - return wiphy priv from wireless_dev 3571 * 3572 * @wdev: The wireless device whose wiphy's priv pointer to return 3573 * Return: The wiphy priv of @wdev. 3574 */ 3575 static inline void *wdev_priv(struct wireless_dev *wdev) 3576 { 3577 BUG_ON(!wdev); 3578 return wiphy_priv(wdev->wiphy); 3579 } 3580 3581 /** 3582 * DOC: Utility functions 3583 * 3584 * cfg80211 offers a number of utility functions that can be useful. 3585 */ 3586 3587 /** 3588 * ieee80211_channel_to_frequency - convert channel number to frequency 3589 * @chan: channel number 3590 * @band: band, necessary due to channel number overlap 3591 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed. 3592 */ 3593 int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 3594 3595 /** 3596 * ieee80211_frequency_to_channel - convert frequency to channel number 3597 * @freq: center frequency 3598 * Return: The corresponding channel, or 0 if the conversion failed. 3599 */ 3600 int ieee80211_frequency_to_channel(int freq); 3601 3602 /* 3603 * Name indirection necessary because the ieee80211 code also has 3604 * a function named "ieee80211_get_channel", so if you include 3605 * cfg80211's header file you get cfg80211's version, if you try 3606 * to include both header files you'll (rightfully!) get a symbol 3607 * clash. 3608 */ 3609 struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 3610 int freq); 3611 /** 3612 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 3613 * @wiphy: the struct wiphy to get the channel for 3614 * @freq: the center frequency of the channel 3615 * Return: The channel struct from @wiphy at @freq. 3616 */ 3617 static inline struct ieee80211_channel * 3618 ieee80211_get_channel(struct wiphy *wiphy, int freq) 3619 { 3620 return __ieee80211_get_channel(wiphy, freq); 3621 } 3622 3623 /** 3624 * ieee80211_get_response_rate - get basic rate for a given rate 3625 * 3626 * @sband: the band to look for rates in 3627 * @basic_rates: bitmap of basic rates 3628 * @bitrate: the bitrate for which to find the basic rate 3629 * 3630 * Return: The basic rate corresponding to a given bitrate, that 3631 * is the next lower bitrate contained in the basic rate map, 3632 * which is, for this function, given as a bitmap of indices of 3633 * rates in the band's bitrate table. 3634 */ 3635 struct ieee80211_rate * 3636 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 3637 u32 basic_rates, int bitrate); 3638 3639 /** 3640 * ieee80211_mandatory_rates - get mandatory rates for a given band 3641 * @sband: the band to look for rates in 3642 * @scan_width: width of the control channel 3643 * 3644 * This function returns a bitmap of the mandatory rates for the given 3645 * band, bits are set according to the rate position in the bitrates array. 3646 */ 3647 u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, 3648 enum nl80211_bss_scan_width scan_width); 3649 3650 /* 3651 * Radiotap parsing functions -- for controlled injection support 3652 * 3653 * Implemented in net/wireless/radiotap.c 3654 * Documentation in Documentation/networking/radiotap-headers.txt 3655 */ 3656 3657 struct radiotap_align_size { 3658 uint8_t align:4, size:4; 3659 }; 3660 3661 struct ieee80211_radiotap_namespace { 3662 const struct radiotap_align_size *align_size; 3663 int n_bits; 3664 uint32_t oui; 3665 uint8_t subns; 3666 }; 3667 3668 struct ieee80211_radiotap_vendor_namespaces { 3669 const struct ieee80211_radiotap_namespace *ns; 3670 int n_ns; 3671 }; 3672 3673 /** 3674 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 3675 * @this_arg_index: index of current arg, valid after each successful call 3676 * to ieee80211_radiotap_iterator_next() 3677 * @this_arg: pointer to current radiotap arg; it is valid after each 3678 * call to ieee80211_radiotap_iterator_next() but also after 3679 * ieee80211_radiotap_iterator_init() where it will point to 3680 * the beginning of the actual data portion 3681 * @this_arg_size: length of the current arg, for convenience 3682 * @current_namespace: pointer to the current namespace definition 3683 * (or internally %NULL if the current namespace is unknown) 3684 * @is_radiotap_ns: indicates whether the current namespace is the default 3685 * radiotap namespace or not 3686 * 3687 * @_rtheader: pointer to the radiotap header we are walking through 3688 * @_max_length: length of radiotap header in cpu byte ordering 3689 * @_arg_index: next argument index 3690 * @_arg: next argument pointer 3691 * @_next_bitmap: internal pointer to next present u32 3692 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 3693 * @_vns: vendor namespace definitions 3694 * @_next_ns_data: beginning of the next namespace's data 3695 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 3696 * next bitmap word 3697 * 3698 * Describes the radiotap parser state. Fields prefixed with an underscore 3699 * must not be used by users of the parser, only by the parser internally. 3700 */ 3701 3702 struct ieee80211_radiotap_iterator { 3703 struct ieee80211_radiotap_header *_rtheader; 3704 const struct ieee80211_radiotap_vendor_namespaces *_vns; 3705 const struct ieee80211_radiotap_namespace *current_namespace; 3706 3707 unsigned char *_arg, *_next_ns_data; 3708 __le32 *_next_bitmap; 3709 3710 unsigned char *this_arg; 3711 int this_arg_index; 3712 int this_arg_size; 3713 3714 int is_radiotap_ns; 3715 3716 int _max_length; 3717 int _arg_index; 3718 uint32_t _bitmap_shifter; 3719 int _reset_on_ext; 3720 }; 3721 3722 int 3723 ieee80211_radiotap_iterator_init(struct ieee80211_radiotap_iterator *iterator, 3724 struct ieee80211_radiotap_header *radiotap_header, 3725 int max_length, 3726 const struct ieee80211_radiotap_vendor_namespaces *vns); 3727 3728 int 3729 ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator); 3730 3731 3732 extern const unsigned char rfc1042_header[6]; 3733 extern const unsigned char bridge_tunnel_header[6]; 3734 3735 /** 3736 * ieee80211_get_hdrlen_from_skb - get header length from data 3737 * 3738 * @skb: the frame 3739 * 3740 * Given an skb with a raw 802.11 header at the data pointer this function 3741 * returns the 802.11 header length. 3742 * 3743 * Return: The 802.11 header length in bytes (not including encryption 3744 * headers). Or 0 if the data in the sk_buff is too short to contain a valid 3745 * 802.11 header. 3746 */ 3747 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 3748 3749 /** 3750 * ieee80211_hdrlen - get header length in bytes from frame control 3751 * @fc: frame control field in little-endian format 3752 * Return: The header length in bytes. 3753 */ 3754 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 3755 3756 /** 3757 * ieee80211_get_mesh_hdrlen - get mesh extension header length 3758 * @meshhdr: the mesh extension header, only the flags field 3759 * (first byte) will be accessed 3760 * Return: The length of the extension header, which is always at 3761 * least 6 bytes and at most 18 if address 5 and 6 are present. 3762 */ 3763 unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); 3764 3765 /** 3766 * DOC: Data path helpers 3767 * 3768 * In addition to generic utilities, cfg80211 also offers 3769 * functions that help implement the data path for devices 3770 * that do not do the 802.11/802.3 conversion on the device. 3771 */ 3772 3773 /** 3774 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 3775 * @skb: the 802.11 data frame 3776 * @addr: the device MAC address 3777 * @iftype: the virtual interface type 3778 * Return: 0 on success. Non-zero on error. 3779 */ 3780 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 3781 enum nl80211_iftype iftype); 3782 3783 /** 3784 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 3785 * @skb: the 802.3 frame 3786 * @addr: the device MAC address 3787 * @iftype: the virtual interface type 3788 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 3789 * @qos: build 802.11 QoS data frame 3790 * Return: 0 on success, or a negative error code. 3791 */ 3792 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 3793 enum nl80211_iftype iftype, const u8 *bssid, 3794 bool qos); 3795 3796 /** 3797 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 3798 * 3799 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 3800 * 802.3 frames. The @list will be empty if the decode fails. The 3801 * @skb is consumed after the function returns. 3802 * 3803 * @skb: The input IEEE 802.11n A-MSDU frame. 3804 * @list: The output list of 802.3 frames. It must be allocated and 3805 * initialized by by the caller. 3806 * @addr: The device MAC address. 3807 * @iftype: The device interface type. 3808 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 3809 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 3810 */ 3811 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 3812 const u8 *addr, enum nl80211_iftype iftype, 3813 const unsigned int extra_headroom, 3814 bool has_80211_header); 3815 3816 /** 3817 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 3818 * @skb: the data frame 3819 * @qos_map: Interworking QoS mapping or %NULL if not in use 3820 * Return: The 802.1p/1d tag. 3821 */ 3822 unsigned int cfg80211_classify8021d(struct sk_buff *skb, 3823 struct cfg80211_qos_map *qos_map); 3824 3825 /** 3826 * cfg80211_find_ie - find information element in data 3827 * 3828 * @eid: element ID 3829 * @ies: data consisting of IEs 3830 * @len: length of data 3831 * 3832 * Return: %NULL if the element ID could not be found or if 3833 * the element is invalid (claims to be longer than the given 3834 * data), or a pointer to the first byte of the requested 3835 * element, that is the byte containing the element ID. 3836 * 3837 * Note: There are no checks on the element length other than 3838 * having to fit into the given data. 3839 */ 3840 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 3841 3842 /** 3843 * cfg80211_find_vendor_ie - find vendor specific information element in data 3844 * 3845 * @oui: vendor OUI 3846 * @oui_type: vendor-specific OUI type 3847 * @ies: data consisting of IEs 3848 * @len: length of data 3849 * 3850 * Return: %NULL if the vendor specific element ID could not be found or if the 3851 * element is invalid (claims to be longer than the given data), or a pointer to 3852 * the first byte of the requested element, that is the byte containing the 3853 * element ID. 3854 * 3855 * Note: There are no checks on the element length other than having to fit into 3856 * the given data. 3857 */ 3858 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 3859 const u8 *ies, int len); 3860 3861 /** 3862 * DOC: Regulatory enforcement infrastructure 3863 * 3864 * TODO 3865 */ 3866 3867 /** 3868 * regulatory_hint - driver hint to the wireless core a regulatory domain 3869 * @wiphy: the wireless device giving the hint (used only for reporting 3870 * conflicts) 3871 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 3872 * should be in. If @rd is set this should be NULL. Note that if you 3873 * set this to NULL you should still set rd->alpha2 to some accepted 3874 * alpha2. 3875 * 3876 * Wireless drivers can use this function to hint to the wireless core 3877 * what it believes should be the current regulatory domain by 3878 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 3879 * domain should be in or by providing a completely build regulatory domain. 3880 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 3881 * for a regulatory domain structure for the respective country. 3882 * 3883 * The wiphy must have been registered to cfg80211 prior to this call. 3884 * For cfg80211 drivers this means you must first use wiphy_register(), 3885 * for mac80211 drivers you must first use ieee80211_register_hw(). 3886 * 3887 * Drivers should check the return value, its possible you can get 3888 * an -ENOMEM. 3889 * 3890 * Return: 0 on success. -ENOMEM. 3891 */ 3892 int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 3893 3894 /** 3895 * regulatory_set_wiphy_regd - set regdom info for self managed drivers 3896 * @wiphy: the wireless device we want to process the regulatory domain on 3897 * @rd: the regulatory domain informatoin to use for this wiphy 3898 * 3899 * Set the regulatory domain information for self-managed wiphys, only they 3900 * may use this function. See %REGULATORY_WIPHY_SELF_MANAGED for more 3901 * information. 3902 * 3903 * Return: 0 on success. -EINVAL, -EPERM 3904 */ 3905 int regulatory_set_wiphy_regd(struct wiphy *wiphy, 3906 struct ieee80211_regdomain *rd); 3907 3908 /** 3909 * regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers 3910 * @wiphy: the wireless device we want to process the regulatory domain on 3911 * @rd: the regulatory domain information to use for this wiphy 3912 * 3913 * This functions requires the RTNL to be held and applies the new regdomain 3914 * synchronously to this wiphy. For more details see 3915 * regulatory_set_wiphy_regd(). 3916 * 3917 * Return: 0 on success. -EINVAL, -EPERM 3918 */ 3919 int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy, 3920 struct ieee80211_regdomain *rd); 3921 3922 /** 3923 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 3924 * @wiphy: the wireless device we want to process the regulatory domain on 3925 * @regd: the custom regulatory domain to use for this wiphy 3926 * 3927 * Drivers can sometimes have custom regulatory domains which do not apply 3928 * to a specific country. Drivers can use this to apply such custom regulatory 3929 * domains. This routine must be called prior to wiphy registration. The 3930 * custom regulatory domain will be trusted completely and as such previous 3931 * default channel settings will be disregarded. If no rule is found for a 3932 * channel on the regulatory domain the channel will be disabled. 3933 * Drivers using this for a wiphy should also set the wiphy flag 3934 * REGULATORY_CUSTOM_REG or cfg80211 will set it for the wiphy 3935 * that called this helper. 3936 */ 3937 void wiphy_apply_custom_regulatory(struct wiphy *wiphy, 3938 const struct ieee80211_regdomain *regd); 3939 3940 /** 3941 * freq_reg_info - get regulatory information for the given frequency 3942 * @wiphy: the wiphy for which we want to process this rule for 3943 * @center_freq: Frequency in KHz for which we want regulatory information for 3944 * 3945 * Use this function to get the regulatory rule for a specific frequency on 3946 * a given wireless device. If the device has a specific regulatory domain 3947 * it wants to follow we respect that unless a country IE has been received 3948 * and processed already. 3949 * 3950 * Return: A valid pointer, or, when an error occurs, for example if no rule 3951 * can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to 3952 * check and PTR_ERR() to obtain the numeric return value. The numeric return 3953 * value will be -ERANGE if we determine the given center_freq does not even 3954 * have a regulatory rule for a frequency range in the center_freq's band. 3955 * See freq_in_rule_band() for our current definition of a band -- this is 3956 * purely subjective and right now it's 802.11 specific. 3957 */ 3958 const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, 3959 u32 center_freq); 3960 3961 /** 3962 * reg_initiator_name - map regulatory request initiator enum to name 3963 * @initiator: the regulatory request initiator 3964 * 3965 * You can use this to map the regulatory request initiator enum to a 3966 * proper string representation. 3967 */ 3968 const char *reg_initiator_name(enum nl80211_reg_initiator initiator); 3969 3970 /* 3971 * callbacks for asynchronous cfg80211 methods, notification 3972 * functions and BSS handling helpers 3973 */ 3974 3975 /** 3976 * cfg80211_scan_done - notify that scan finished 3977 * 3978 * @request: the corresponding scan request 3979 * @aborted: set to true if the scan was aborted for any reason, 3980 * userspace will be notified of that 3981 */ 3982 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 3983 3984 /** 3985 * cfg80211_sched_scan_results - notify that new scan results are available 3986 * 3987 * @wiphy: the wiphy which got scheduled scan results 3988 */ 3989 void cfg80211_sched_scan_results(struct wiphy *wiphy); 3990 3991 /** 3992 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 3993 * 3994 * @wiphy: the wiphy on which the scheduled scan stopped 3995 * 3996 * The driver can call this function to inform cfg80211 that the 3997 * scheduled scan had to be stopped, for whatever reason. The driver 3998 * is then called back via the sched_scan_stop operation when done. 3999 */ 4000 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 4001 4002 /** 4003 * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped 4004 * 4005 * @wiphy: the wiphy on which the scheduled scan stopped 4006 * 4007 * The driver can call this function to inform cfg80211 that the 4008 * scheduled scan had to be stopped, for whatever reason. The driver 4009 * is then called back via the sched_scan_stop operation when done. 4010 * This function should be called with rtnl locked. 4011 */ 4012 void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy); 4013 4014 /** 4015 * cfg80211_inform_bss_frame_data - inform cfg80211 of a received BSS frame 4016 * @wiphy: the wiphy reporting the BSS 4017 * @data: the BSS metadata 4018 * @mgmt: the management frame (probe response or beacon) 4019 * @len: length of the management frame 4020 * @gfp: context flags 4021 * 4022 * This informs cfg80211 that BSS information was found and 4023 * the BSS should be updated/added. 4024 * 4025 * Return: A referenced struct, must be released with cfg80211_put_bss()! 4026 * Or %NULL on error. 4027 */ 4028 struct cfg80211_bss * __must_check 4029 cfg80211_inform_bss_frame_data(struct wiphy *wiphy, 4030 struct cfg80211_inform_bss *data, 4031 struct ieee80211_mgmt *mgmt, size_t len, 4032 gfp_t gfp); 4033 4034 static inline struct cfg80211_bss * __must_check 4035 cfg80211_inform_bss_width_frame(struct wiphy *wiphy, 4036 struct ieee80211_channel *rx_channel, 4037 enum nl80211_bss_scan_width scan_width, 4038 struct ieee80211_mgmt *mgmt, size_t len, 4039 s32 signal, gfp_t gfp) 4040 { 4041 struct cfg80211_inform_bss data = { 4042 .chan = rx_channel, 4043 .scan_width = scan_width, 4044 .signal = signal, 4045 }; 4046 4047 return cfg80211_inform_bss_frame_data(wiphy, &data, mgmt, len, gfp); 4048 } 4049 4050 static inline struct cfg80211_bss * __must_check 4051 cfg80211_inform_bss_frame(struct wiphy *wiphy, 4052 struct ieee80211_channel *rx_channel, 4053 struct ieee80211_mgmt *mgmt, size_t len, 4054 s32 signal, gfp_t gfp) 4055 { 4056 struct cfg80211_inform_bss data = { 4057 .chan = rx_channel, 4058 .scan_width = NL80211_BSS_CHAN_WIDTH_20, 4059 .signal = signal, 4060 }; 4061 4062 return cfg80211_inform_bss_frame_data(wiphy, &data, mgmt, len, gfp); 4063 } 4064 4065 /** 4066 * enum cfg80211_bss_frame_type - frame type that the BSS data came from 4067 * @CFG80211_BSS_FTYPE_UNKNOWN: driver doesn't know whether the data is 4068 * from a beacon or probe response 4069 * @CFG80211_BSS_FTYPE_BEACON: data comes from a beacon 4070 * @CFG80211_BSS_FTYPE_PRESP: data comes from a probe response 4071 */ 4072 enum cfg80211_bss_frame_type { 4073 CFG80211_BSS_FTYPE_UNKNOWN, 4074 CFG80211_BSS_FTYPE_BEACON, 4075 CFG80211_BSS_FTYPE_PRESP, 4076 }; 4077 4078 /** 4079 * cfg80211_inform_bss_data - inform cfg80211 of a new BSS 4080 * 4081 * @wiphy: the wiphy reporting the BSS 4082 * @data: the BSS metadata 4083 * @ftype: frame type (if known) 4084 * @bssid: the BSSID of the BSS 4085 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0) 4086 * @capability: the capability field sent by the peer 4087 * @beacon_interval: the beacon interval announced by the peer 4088 * @ie: additional IEs sent by the peer 4089 * @ielen: length of the additional IEs 4090 * @gfp: context flags 4091 * 4092 * This informs cfg80211 that BSS information was found and 4093 * the BSS should be updated/added. 4094 * 4095 * Return: A referenced struct, must be released with cfg80211_put_bss()! 4096 * Or %NULL on error. 4097 */ 4098 struct cfg80211_bss * __must_check 4099 cfg80211_inform_bss_data(struct wiphy *wiphy, 4100 struct cfg80211_inform_bss *data, 4101 enum cfg80211_bss_frame_type ftype, 4102 const u8 *bssid, u64 tsf, u16 capability, 4103 u16 beacon_interval, const u8 *ie, size_t ielen, 4104 gfp_t gfp); 4105 4106 static inline struct cfg80211_bss * __must_check 4107 cfg80211_inform_bss_width(struct wiphy *wiphy, 4108 struct ieee80211_channel *rx_channel, 4109 enum nl80211_bss_scan_width scan_width, 4110 enum cfg80211_bss_frame_type ftype, 4111 const u8 *bssid, u64 tsf, u16 capability, 4112 u16 beacon_interval, const u8 *ie, size_t ielen, 4113 s32 signal, gfp_t gfp) 4114 { 4115 struct cfg80211_inform_bss data = { 4116 .chan = rx_channel, 4117 .scan_width = scan_width, 4118 .signal = signal, 4119 }; 4120 4121 return cfg80211_inform_bss_data(wiphy, &data, ftype, bssid, tsf, 4122 capability, beacon_interval, ie, ielen, 4123 gfp); 4124 } 4125 4126 static inline struct cfg80211_bss * __must_check 4127 cfg80211_inform_bss(struct wiphy *wiphy, 4128 struct ieee80211_channel *rx_channel, 4129 enum cfg80211_bss_frame_type ftype, 4130 const u8 *bssid, u64 tsf, u16 capability, 4131 u16 beacon_interval, const u8 *ie, size_t ielen, 4132 s32 signal, gfp_t gfp) 4133 { 4134 struct cfg80211_inform_bss data = { 4135 .chan = rx_channel, 4136 .scan_width = NL80211_BSS_CHAN_WIDTH_20, 4137 .signal = signal, 4138 }; 4139 4140 return cfg80211_inform_bss_data(wiphy, &data, ftype, bssid, tsf, 4141 capability, beacon_interval, ie, ielen, 4142 gfp); 4143 } 4144 4145 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 4146 struct ieee80211_channel *channel, 4147 const u8 *bssid, 4148 const u8 *ssid, size_t ssid_len, 4149 enum ieee80211_bss_type bss_type, 4150 enum ieee80211_privacy); 4151 static inline struct cfg80211_bss * 4152 cfg80211_get_ibss(struct wiphy *wiphy, 4153 struct ieee80211_channel *channel, 4154 const u8 *ssid, size_t ssid_len) 4155 { 4156 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 4157 IEEE80211_BSS_TYPE_IBSS, 4158 IEEE80211_PRIVACY_ANY); 4159 } 4160 4161 /** 4162 * cfg80211_ref_bss - reference BSS struct 4163 * @wiphy: the wiphy this BSS struct belongs to 4164 * @bss: the BSS struct to reference 4165 * 4166 * Increments the refcount of the given BSS struct. 4167 */ 4168 void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4169 4170 /** 4171 * cfg80211_put_bss - unref BSS struct 4172 * @wiphy: the wiphy this BSS struct belongs to 4173 * @bss: the BSS struct 4174 * 4175 * Decrements the refcount of the given BSS struct. 4176 */ 4177 void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4178 4179 /** 4180 * cfg80211_unlink_bss - unlink BSS from internal data structures 4181 * @wiphy: the wiphy 4182 * @bss: the bss to remove 4183 * 4184 * This function removes the given BSS from the internal data structures 4185 * thereby making it no longer show up in scan results etc. Use this 4186 * function when you detect a BSS is gone. Normally BSSes will also time 4187 * out, so it is not necessary to use this function at all. 4188 */ 4189 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4190 4191 static inline enum nl80211_bss_scan_width 4192 cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef) 4193 { 4194 switch (chandef->width) { 4195 case NL80211_CHAN_WIDTH_5: 4196 return NL80211_BSS_CHAN_WIDTH_5; 4197 case NL80211_CHAN_WIDTH_10: 4198 return NL80211_BSS_CHAN_WIDTH_10; 4199 default: 4200 return NL80211_BSS_CHAN_WIDTH_20; 4201 } 4202 } 4203 4204 /** 4205 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame 4206 * @dev: network device 4207 * @buf: authentication frame (header + body) 4208 * @len: length of the frame data 4209 * 4210 * This function is called whenever an authentication, disassociation or 4211 * deauthentication frame has been received and processed in station mode. 4212 * After being asked to authenticate via cfg80211_ops::auth() the driver must 4213 * call either this function or cfg80211_auth_timeout(). 4214 * After being asked to associate via cfg80211_ops::assoc() the driver must 4215 * call either this function or cfg80211_auth_timeout(). 4216 * While connected, the driver must calls this for received and processed 4217 * disassociation and deauthentication frames. If the frame couldn't be used 4218 * because it was unprotected, the driver must call the function 4219 * cfg80211_rx_unprot_mlme_mgmt() instead. 4220 * 4221 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4222 */ 4223 void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4224 4225 /** 4226 * cfg80211_auth_timeout - notification of timed out authentication 4227 * @dev: network device 4228 * @addr: The MAC address of the device with which the authentication timed out 4229 * 4230 * This function may sleep. The caller must hold the corresponding wdev's 4231 * mutex. 4232 */ 4233 void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr); 4234 4235 /** 4236 * cfg80211_rx_assoc_resp - notification of processed association response 4237 * @dev: network device 4238 * @bss: the BSS that association was requested with, ownership of the pointer 4239 * moves to cfg80211 in this call 4240 * @buf: authentication frame (header + body) 4241 * @len: length of the frame data 4242 * @uapsd_queues: bitmap of ACs configured to uapsd. -1 if n/a. 4243 * 4244 * After being asked to associate via cfg80211_ops::assoc() the driver must 4245 * call either this function or cfg80211_auth_timeout(). 4246 * 4247 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4248 */ 4249 void cfg80211_rx_assoc_resp(struct net_device *dev, 4250 struct cfg80211_bss *bss, 4251 const u8 *buf, size_t len, 4252 int uapsd_queues); 4253 4254 /** 4255 * cfg80211_assoc_timeout - notification of timed out association 4256 * @dev: network device 4257 * @bss: The BSS entry with which association timed out. 4258 * 4259 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4260 */ 4261 void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss); 4262 4263 /** 4264 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame 4265 * @dev: network device 4266 * @buf: 802.11 frame (header + body) 4267 * @len: length of the frame data 4268 * 4269 * This function is called whenever deauthentication has been processed in 4270 * station mode. This includes both received deauthentication frames and 4271 * locally generated ones. This function may sleep. The caller must hold the 4272 * corresponding wdev's mutex. 4273 */ 4274 void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4275 4276 /** 4277 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame 4278 * @dev: network device 4279 * @buf: deauthentication frame (header + body) 4280 * @len: length of the frame data 4281 * 4282 * This function is called whenever a received deauthentication or dissassoc 4283 * frame has been dropped in station mode because of MFP being used but the 4284 * frame was not protected. This function may sleep. 4285 */ 4286 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, 4287 const u8 *buf, size_t len); 4288 4289 /** 4290 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 4291 * @dev: network device 4292 * @addr: The source MAC address of the frame 4293 * @key_type: The key type that the received frame used 4294 * @key_id: Key identifier (0..3). Can be -1 if missing. 4295 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 4296 * @gfp: allocation flags 4297 * 4298 * This function is called whenever the local MAC detects a MIC failure in a 4299 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 4300 * primitive. 4301 */ 4302 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 4303 enum nl80211_key_type key_type, int key_id, 4304 const u8 *tsc, gfp_t gfp); 4305 4306 /** 4307 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 4308 * 4309 * @dev: network device 4310 * @bssid: the BSSID of the IBSS joined 4311 * @channel: the channel of the IBSS joined 4312 * @gfp: allocation flags 4313 * 4314 * This function notifies cfg80211 that the device joined an IBSS or 4315 * switched to a different BSSID. Before this function can be called, 4316 * either a beacon has to have been received from the IBSS, or one of 4317 * the cfg80211_inform_bss{,_frame} functions must have been called 4318 * with the locally generated beacon -- this guarantees that there is 4319 * always a scan result for this IBSS. cfg80211 will handle the rest. 4320 */ 4321 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, 4322 struct ieee80211_channel *channel, gfp_t gfp); 4323 4324 /** 4325 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 4326 * 4327 * @dev: network device 4328 * @macaddr: the MAC address of the new candidate 4329 * @ie: information elements advertised by the peer candidate 4330 * @ie_len: lenght of the information elements buffer 4331 * @gfp: allocation flags 4332 * 4333 * This function notifies cfg80211 that the mesh peer candidate has been 4334 * detected, most likely via a beacon or, less likely, via a probe response. 4335 * cfg80211 then sends a notification to userspace. 4336 */ 4337 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 4338 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 4339 4340 /** 4341 * DOC: RFkill integration 4342 * 4343 * RFkill integration in cfg80211 is almost invisible to drivers, 4344 * as cfg80211 automatically registers an rfkill instance for each 4345 * wireless device it knows about. Soft kill is also translated 4346 * into disconnecting and turning all interfaces off, drivers are 4347 * expected to turn off the device when all interfaces are down. 4348 * 4349 * However, devices may have a hard RFkill line, in which case they 4350 * also need to interact with the rfkill subsystem, via cfg80211. 4351 * They can do this with a few helper functions documented here. 4352 */ 4353 4354 /** 4355 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 4356 * @wiphy: the wiphy 4357 * @blocked: block status 4358 */ 4359 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 4360 4361 /** 4362 * wiphy_rfkill_start_polling - start polling rfkill 4363 * @wiphy: the wiphy 4364 */ 4365 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 4366 4367 /** 4368 * wiphy_rfkill_stop_polling - stop polling rfkill 4369 * @wiphy: the wiphy 4370 */ 4371 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 4372 4373 /** 4374 * DOC: Vendor commands 4375 * 4376 * Occasionally, there are special protocol or firmware features that 4377 * can't be implemented very openly. For this and similar cases, the 4378 * vendor command functionality allows implementing the features with 4379 * (typically closed-source) userspace and firmware, using nl80211 as 4380 * the configuration mechanism. 4381 * 4382 * A driver supporting vendor commands must register them as an array 4383 * in struct wiphy, with handlers for each one, each command has an 4384 * OUI and sub command ID to identify it. 4385 * 4386 * Note that this feature should not be (ab)used to implement protocol 4387 * features that could openly be shared across drivers. In particular, 4388 * it must never be required to use vendor commands to implement any 4389 * "normal" functionality that higher-level userspace like connection 4390 * managers etc. need. 4391 */ 4392 4393 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 4394 enum nl80211_commands cmd, 4395 enum nl80211_attrs attr, 4396 int approxlen); 4397 4398 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 4399 struct wireless_dev *wdev, 4400 enum nl80211_commands cmd, 4401 enum nl80211_attrs attr, 4402 int vendor_event_idx, 4403 int approxlen, gfp_t gfp); 4404 4405 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp); 4406 4407 /** 4408 * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply 4409 * @wiphy: the wiphy 4410 * @approxlen: an upper bound of the length of the data that will 4411 * be put into the skb 4412 * 4413 * This function allocates and pre-fills an skb for a reply to 4414 * a vendor command. Since it is intended for a reply, calling 4415 * it outside of a vendor command's doit() operation is invalid. 4416 * 4417 * The returned skb is pre-filled with some identifying data in 4418 * a way that any data that is put into the skb (with skb_put(), 4419 * nla_put() or similar) will end up being within the 4420 * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done 4421 * with the skb is adding data for the corresponding userspace tool 4422 * which can then read that data out of the vendor data attribute. 4423 * You must not modify the skb in any other way. 4424 * 4425 * When done, call cfg80211_vendor_cmd_reply() with the skb and return 4426 * its error code as the result of the doit() operation. 4427 * 4428 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4429 */ 4430 static inline struct sk_buff * 4431 cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4432 { 4433 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR, 4434 NL80211_ATTR_VENDOR_DATA, approxlen); 4435 } 4436 4437 /** 4438 * cfg80211_vendor_cmd_reply - send the reply skb 4439 * @skb: The skb, must have been allocated with 4440 * cfg80211_vendor_cmd_alloc_reply_skb() 4441 * 4442 * Since calling this function will usually be the last thing 4443 * before returning from the vendor command doit() you should 4444 * return the error code. Note that this function consumes the 4445 * skb regardless of the return value. 4446 * 4447 * Return: An error code or 0 on success. 4448 */ 4449 int cfg80211_vendor_cmd_reply(struct sk_buff *skb); 4450 4451 /** 4452 * cfg80211_vendor_event_alloc - allocate vendor-specific event skb 4453 * @wiphy: the wiphy 4454 * @wdev: the wireless device 4455 * @event_idx: index of the vendor event in the wiphy's vendor_events 4456 * @approxlen: an upper bound of the length of the data that will 4457 * be put into the skb 4458 * @gfp: allocation flags 4459 * 4460 * This function allocates and pre-fills an skb for an event on the 4461 * vendor-specific multicast group. 4462 * 4463 * If wdev != NULL, both the ifindex and identifier of the specified 4464 * wireless device are added to the event message before the vendor data 4465 * attribute. 4466 * 4467 * When done filling the skb, call cfg80211_vendor_event() with the 4468 * skb to send the event. 4469 * 4470 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4471 */ 4472 static inline struct sk_buff * 4473 cfg80211_vendor_event_alloc(struct wiphy *wiphy, struct wireless_dev *wdev, 4474 int approxlen, int event_idx, gfp_t gfp) 4475 { 4476 return __cfg80211_alloc_event_skb(wiphy, wdev, NL80211_CMD_VENDOR, 4477 NL80211_ATTR_VENDOR_DATA, 4478 event_idx, approxlen, gfp); 4479 } 4480 4481 /** 4482 * cfg80211_vendor_event - send the event 4483 * @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc() 4484 * @gfp: allocation flags 4485 * 4486 * This function sends the given @skb, which must have been allocated 4487 * by cfg80211_vendor_event_alloc(), as an event. It always consumes it. 4488 */ 4489 static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp) 4490 { 4491 __cfg80211_send_event_skb(skb, gfp); 4492 } 4493 4494 #ifdef CONFIG_NL80211_TESTMODE 4495 /** 4496 * DOC: Test mode 4497 * 4498 * Test mode is a set of utility functions to allow drivers to 4499 * interact with driver-specific tools to aid, for instance, 4500 * factory programming. 4501 * 4502 * This chapter describes how drivers interact with it, for more 4503 * information see the nl80211 book's chapter on it. 4504 */ 4505 4506 /** 4507 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 4508 * @wiphy: the wiphy 4509 * @approxlen: an upper bound of the length of the data that will 4510 * be put into the skb 4511 * 4512 * This function allocates and pre-fills an skb for a reply to 4513 * the testmode command. Since it is intended for a reply, calling 4514 * it outside of the @testmode_cmd operation is invalid. 4515 * 4516 * The returned skb is pre-filled with the wiphy index and set up in 4517 * a way that any data that is put into the skb (with skb_put(), 4518 * nla_put() or similar) will end up being within the 4519 * %NL80211_ATTR_TESTDATA attribute, so all that needs to be done 4520 * with the skb is adding data for the corresponding userspace tool 4521 * which can then read that data out of the testdata attribute. You 4522 * must not modify the skb in any other way. 4523 * 4524 * When done, call cfg80211_testmode_reply() with the skb and return 4525 * its error code as the result of the @testmode_cmd operation. 4526 * 4527 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4528 */ 4529 static inline struct sk_buff * 4530 cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4531 { 4532 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE, 4533 NL80211_ATTR_TESTDATA, approxlen); 4534 } 4535 4536 /** 4537 * cfg80211_testmode_reply - send the reply skb 4538 * @skb: The skb, must have been allocated with 4539 * cfg80211_testmode_alloc_reply_skb() 4540 * 4541 * Since calling this function will usually be the last thing 4542 * before returning from the @testmode_cmd you should return 4543 * the error code. Note that this function consumes the skb 4544 * regardless of the return value. 4545 * 4546 * Return: An error code or 0 on success. 4547 */ 4548 static inline int cfg80211_testmode_reply(struct sk_buff *skb) 4549 { 4550 return cfg80211_vendor_cmd_reply(skb); 4551 } 4552 4553 /** 4554 * cfg80211_testmode_alloc_event_skb - allocate testmode event 4555 * @wiphy: the wiphy 4556 * @approxlen: an upper bound of the length of the data that will 4557 * be put into the skb 4558 * @gfp: allocation flags 4559 * 4560 * This function allocates and pre-fills an skb for an event on the 4561 * testmode multicast group. 4562 * 4563 * The returned skb is set up in the same way as with 4564 * cfg80211_testmode_alloc_reply_skb() but prepared for an event. As 4565 * there, you should simply add data to it that will then end up in the 4566 * %NL80211_ATTR_TESTDATA attribute. Again, you must not modify the skb 4567 * in any other way. 4568 * 4569 * When done filling the skb, call cfg80211_testmode_event() with the 4570 * skb to send the event. 4571 * 4572 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4573 */ 4574 static inline struct sk_buff * 4575 cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp) 4576 { 4577 return __cfg80211_alloc_event_skb(wiphy, NULL, NL80211_CMD_TESTMODE, 4578 NL80211_ATTR_TESTDATA, -1, 4579 approxlen, gfp); 4580 } 4581 4582 /** 4583 * cfg80211_testmode_event - send the event 4584 * @skb: The skb, must have been allocated with 4585 * cfg80211_testmode_alloc_event_skb() 4586 * @gfp: allocation flags 4587 * 4588 * This function sends the given @skb, which must have been allocated 4589 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 4590 * consumes it. 4591 */ 4592 static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 4593 { 4594 __cfg80211_send_event_skb(skb, gfp); 4595 } 4596 4597 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 4598 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 4599 #else 4600 #define CFG80211_TESTMODE_CMD(cmd) 4601 #define CFG80211_TESTMODE_DUMP(cmd) 4602 #endif 4603 4604 /** 4605 * cfg80211_connect_result - notify cfg80211 of connection result 4606 * 4607 * @dev: network device 4608 * @bssid: the BSSID of the AP 4609 * @req_ie: association request IEs (maybe be %NULL) 4610 * @req_ie_len: association request IEs length 4611 * @resp_ie: association response IEs (may be %NULL) 4612 * @resp_ie_len: assoc response IEs length 4613 * @status: status code, 0 for successful connection, use 4614 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 4615 * the real status code for failures. 4616 * @gfp: allocation flags 4617 * 4618 * It should be called by the underlying driver whenever connect() has 4619 * succeeded. 4620 */ 4621 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 4622 const u8 *req_ie, size_t req_ie_len, 4623 const u8 *resp_ie, size_t resp_ie_len, 4624 u16 status, gfp_t gfp); 4625 4626 /** 4627 * cfg80211_roamed - notify cfg80211 of roaming 4628 * 4629 * @dev: network device 4630 * @channel: the channel of the new AP 4631 * @bssid: the BSSID of the new AP 4632 * @req_ie: association request IEs (maybe be %NULL) 4633 * @req_ie_len: association request IEs length 4634 * @resp_ie: association response IEs (may be %NULL) 4635 * @resp_ie_len: assoc response IEs length 4636 * @gfp: allocation flags 4637 * 4638 * It should be called by the underlying driver whenever it roamed 4639 * from one AP to another while connected. 4640 */ 4641 void cfg80211_roamed(struct net_device *dev, 4642 struct ieee80211_channel *channel, 4643 const u8 *bssid, 4644 const u8 *req_ie, size_t req_ie_len, 4645 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4646 4647 /** 4648 * cfg80211_roamed_bss - notify cfg80211 of roaming 4649 * 4650 * @dev: network device 4651 * @bss: entry of bss to which STA got roamed 4652 * @req_ie: association request IEs (maybe be %NULL) 4653 * @req_ie_len: association request IEs length 4654 * @resp_ie: association response IEs (may be %NULL) 4655 * @resp_ie_len: assoc response IEs length 4656 * @gfp: allocation flags 4657 * 4658 * This is just a wrapper to notify cfg80211 of roaming event with driver 4659 * passing bss to avoid a race in timeout of the bss entry. It should be 4660 * called by the underlying driver whenever it roamed from one AP to another 4661 * while connected. Drivers which have roaming implemented in firmware 4662 * may use this function to avoid a race in bss entry timeout where the bss 4663 * entry of the new AP is seen in the driver, but gets timed out by the time 4664 * it is accessed in __cfg80211_roamed() due to delay in scheduling 4665 * rdev->event_work. In case of any failures, the reference is released 4666 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 4667 * it will be released while diconneting from the current bss. 4668 */ 4669 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 4670 const u8 *req_ie, size_t req_ie_len, 4671 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4672 4673 /** 4674 * cfg80211_disconnected - notify cfg80211 that connection was dropped 4675 * 4676 * @dev: network device 4677 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 4678 * @ie_len: length of IEs 4679 * @reason: reason code for the disconnection, set it to 0 if unknown 4680 * @locally_generated: disconnection was requested locally 4681 * @gfp: allocation flags 4682 * 4683 * After it calls this function, the driver should enter an idle state 4684 * and not try to connect to any AP any more. 4685 */ 4686 void cfg80211_disconnected(struct net_device *dev, u16 reason, 4687 const u8 *ie, size_t ie_len, 4688 bool locally_generated, gfp_t gfp); 4689 4690 /** 4691 * cfg80211_ready_on_channel - notification of remain_on_channel start 4692 * @wdev: wireless device 4693 * @cookie: the request cookie 4694 * @chan: The current channel (from remain_on_channel request) 4695 * @duration: Duration in milliseconds that the driver intents to remain on the 4696 * channel 4697 * @gfp: allocation flags 4698 */ 4699 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 4700 struct ieee80211_channel *chan, 4701 unsigned int duration, gfp_t gfp); 4702 4703 /** 4704 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 4705 * @wdev: wireless device 4706 * @cookie: the request cookie 4707 * @chan: The current channel (from remain_on_channel request) 4708 * @gfp: allocation flags 4709 */ 4710 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 4711 struct ieee80211_channel *chan, 4712 gfp_t gfp); 4713 4714 4715 /** 4716 * cfg80211_new_sta - notify userspace about station 4717 * 4718 * @dev: the netdev 4719 * @mac_addr: the station's address 4720 * @sinfo: the station information 4721 * @gfp: allocation flags 4722 */ 4723 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 4724 struct station_info *sinfo, gfp_t gfp); 4725 4726 /** 4727 * cfg80211_del_sta_sinfo - notify userspace about deletion of a station 4728 * @dev: the netdev 4729 * @mac_addr: the station's address 4730 * @sinfo: the station information/statistics 4731 * @gfp: allocation flags 4732 */ 4733 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 4734 struct station_info *sinfo, gfp_t gfp); 4735 4736 /** 4737 * cfg80211_del_sta - notify userspace about deletion of a station 4738 * 4739 * @dev: the netdev 4740 * @mac_addr: the station's address 4741 * @gfp: allocation flags 4742 */ 4743 static inline void cfg80211_del_sta(struct net_device *dev, 4744 const u8 *mac_addr, gfp_t gfp) 4745 { 4746 cfg80211_del_sta_sinfo(dev, mac_addr, NULL, gfp); 4747 } 4748 4749 /** 4750 * cfg80211_conn_failed - connection request failed notification 4751 * 4752 * @dev: the netdev 4753 * @mac_addr: the station's address 4754 * @reason: the reason for connection failure 4755 * @gfp: allocation flags 4756 * 4757 * Whenever a station tries to connect to an AP and if the station 4758 * could not connect to the AP as the AP has rejected the connection 4759 * for some reasons, this function is called. 4760 * 4761 * The reason for connection failure can be any of the value from 4762 * nl80211_connect_failed_reason enum 4763 */ 4764 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 4765 enum nl80211_connect_failed_reason reason, 4766 gfp_t gfp); 4767 4768 /** 4769 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 4770 * @wdev: wireless device receiving the frame 4771 * @freq: Frequency on which the frame was received in MHz 4772 * @sig_dbm: signal strength in mBm, or 0 if unknown 4773 * @buf: Management frame (header + body) 4774 * @len: length of the frame data 4775 * @flags: flags, as defined in enum nl80211_rxmgmt_flags 4776 * 4777 * This function is called whenever an Action frame is received for a station 4778 * mode interface, but is not processed in kernel. 4779 * 4780 * Return: %true if a user space application has registered for this frame. 4781 * For action frames, that makes it responsible for rejecting unrecognized 4782 * action frames; %false otherwise, in which case for action frames the 4783 * driver is responsible for rejecting the frame. 4784 */ 4785 bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm, 4786 const u8 *buf, size_t len, u32 flags); 4787 4788 /** 4789 * cfg80211_mgmt_tx_status - notification of TX status for management frame 4790 * @wdev: wireless device receiving the frame 4791 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 4792 * @buf: Management frame (header + body) 4793 * @len: length of the frame data 4794 * @ack: Whether frame was acknowledged 4795 * @gfp: context flags 4796 * 4797 * This function is called whenever a management frame was requested to be 4798 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 4799 * transmission attempt. 4800 */ 4801 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 4802 const u8 *buf, size_t len, bool ack, gfp_t gfp); 4803 4804 4805 /** 4806 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 4807 * @dev: network device 4808 * @rssi_event: the triggered RSSI event 4809 * @gfp: context flags 4810 * 4811 * This function is called when a configured connection quality monitoring 4812 * rssi threshold reached event occurs. 4813 */ 4814 void cfg80211_cqm_rssi_notify(struct net_device *dev, 4815 enum nl80211_cqm_rssi_threshold_event rssi_event, 4816 gfp_t gfp); 4817 4818 /** 4819 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 4820 * @dev: network device 4821 * @peer: peer's MAC address 4822 * @num_packets: how many packets were lost -- should be a fixed threshold 4823 * but probably no less than maybe 50, or maybe a throughput dependent 4824 * threshold (to account for temporary interference) 4825 * @gfp: context flags 4826 */ 4827 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 4828 const u8 *peer, u32 num_packets, gfp_t gfp); 4829 4830 /** 4831 * cfg80211_cqm_txe_notify - TX error rate event 4832 * @dev: network device 4833 * @peer: peer's MAC address 4834 * @num_packets: how many packets were lost 4835 * @rate: % of packets which failed transmission 4836 * @intvl: interval (in s) over which the TX failure threshold was breached. 4837 * @gfp: context flags 4838 * 4839 * Notify userspace when configured % TX failures over number of packets in a 4840 * given interval is exceeded. 4841 */ 4842 void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer, 4843 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp); 4844 4845 /** 4846 * cfg80211_cqm_beacon_loss_notify - beacon loss event 4847 * @dev: network device 4848 * @gfp: context flags 4849 * 4850 * Notify userspace about beacon loss from the connected AP. 4851 */ 4852 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp); 4853 4854 /** 4855 * cfg80211_radar_event - radar detection event 4856 * @wiphy: the wiphy 4857 * @chandef: chandef for the current channel 4858 * @gfp: context flags 4859 * 4860 * This function is called when a radar is detected on the current chanenl. 4861 */ 4862 void cfg80211_radar_event(struct wiphy *wiphy, 4863 struct cfg80211_chan_def *chandef, gfp_t gfp); 4864 4865 /** 4866 * cfg80211_cac_event - Channel availability check (CAC) event 4867 * @netdev: network device 4868 * @chandef: chandef for the current channel 4869 * @event: type of event 4870 * @gfp: context flags 4871 * 4872 * This function is called when a Channel availability check (CAC) is finished 4873 * or aborted. This must be called to notify the completion of a CAC process, 4874 * also by full-MAC drivers. 4875 */ 4876 void cfg80211_cac_event(struct net_device *netdev, 4877 const struct cfg80211_chan_def *chandef, 4878 enum nl80211_radar_event event, gfp_t gfp); 4879 4880 4881 /** 4882 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 4883 * @dev: network device 4884 * @bssid: BSSID of AP (to avoid races) 4885 * @replay_ctr: new replay counter 4886 * @gfp: allocation flags 4887 */ 4888 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 4889 const u8 *replay_ctr, gfp_t gfp); 4890 4891 /** 4892 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 4893 * @dev: network device 4894 * @index: candidate index (the smaller the index, the higher the priority) 4895 * @bssid: BSSID of AP 4896 * @preauth: Whether AP advertises support for RSN pre-authentication 4897 * @gfp: allocation flags 4898 */ 4899 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 4900 const u8 *bssid, bool preauth, gfp_t gfp); 4901 4902 /** 4903 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 4904 * @dev: The device the frame matched to 4905 * @addr: the transmitter address 4906 * @gfp: context flags 4907 * 4908 * This function is used in AP mode (only!) to inform userspace that 4909 * a spurious class 3 frame was received, to be able to deauth the 4910 * sender. 4911 * Return: %true if the frame was passed to userspace (or this failed 4912 * for a reason other than not having a subscription.) 4913 */ 4914 bool cfg80211_rx_spurious_frame(struct net_device *dev, 4915 const u8 *addr, gfp_t gfp); 4916 4917 /** 4918 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 4919 * @dev: The device the frame matched to 4920 * @addr: the transmitter address 4921 * @gfp: context flags 4922 * 4923 * This function is used in AP mode (only!) to inform userspace that 4924 * an associated station sent a 4addr frame but that wasn't expected. 4925 * It is allowed and desirable to send this event only once for each 4926 * station to avoid event flooding. 4927 * Return: %true if the frame was passed to userspace (or this failed 4928 * for a reason other than not having a subscription.) 4929 */ 4930 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 4931 const u8 *addr, gfp_t gfp); 4932 4933 /** 4934 * cfg80211_probe_status - notify userspace about probe status 4935 * @dev: the device the probe was sent on 4936 * @addr: the address of the peer 4937 * @cookie: the cookie filled in @probe_client previously 4938 * @acked: indicates whether probe was acked or not 4939 * @gfp: allocation flags 4940 */ 4941 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 4942 u64 cookie, bool acked, gfp_t gfp); 4943 4944 /** 4945 * cfg80211_report_obss_beacon - report beacon from other APs 4946 * @wiphy: The wiphy that received the beacon 4947 * @frame: the frame 4948 * @len: length of the frame 4949 * @freq: frequency the frame was received on 4950 * @sig_dbm: signal strength in mBm, or 0 if unknown 4951 * 4952 * Use this function to report to userspace when a beacon was 4953 * received. It is not useful to call this when there is no 4954 * netdev that is in AP/GO mode. 4955 */ 4956 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 4957 const u8 *frame, size_t len, 4958 int freq, int sig_dbm); 4959 4960 /** 4961 * cfg80211_reg_can_beacon - check if beaconing is allowed 4962 * @wiphy: the wiphy 4963 * @chandef: the channel definition 4964 * @iftype: interface type 4965 * 4966 * Return: %true if there is no secondary channel or the secondary channel(s) 4967 * can be used for beaconing (i.e. is not a radar channel etc.) 4968 */ 4969 bool cfg80211_reg_can_beacon(struct wiphy *wiphy, 4970 struct cfg80211_chan_def *chandef, 4971 enum nl80211_iftype iftype); 4972 4973 /** 4974 * cfg80211_reg_can_beacon_relax - check if beaconing is allowed with relaxation 4975 * @wiphy: the wiphy 4976 * @chandef: the channel definition 4977 * @iftype: interface type 4978 * 4979 * Return: %true if there is no secondary channel or the secondary channel(s) 4980 * can be used for beaconing (i.e. is not a radar channel etc.). This version 4981 * also checks if IR-relaxation conditions apply, to allow beaconing under 4982 * more permissive conditions. 4983 * 4984 * Requires the RTNL to be held. 4985 */ 4986 bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy, 4987 struct cfg80211_chan_def *chandef, 4988 enum nl80211_iftype iftype); 4989 4990 /* 4991 * cfg80211_ch_switch_notify - update wdev channel and notify userspace 4992 * @dev: the device which switched channels 4993 * @chandef: the new channel definition 4994 * 4995 * Caller must acquire wdev_lock, therefore must only be called from sleepable 4996 * driver context! 4997 */ 4998 void cfg80211_ch_switch_notify(struct net_device *dev, 4999 struct cfg80211_chan_def *chandef); 5000 5001 /* 5002 * cfg80211_ch_switch_started_notify - notify channel switch start 5003 * @dev: the device on which the channel switch started 5004 * @chandef: the future channel definition 5005 * @count: the number of TBTTs until the channel switch happens 5006 * 5007 * Inform the userspace about the channel switch that has just 5008 * started, so that it can take appropriate actions (eg. starting 5009 * channel switch on other vifs), if necessary. 5010 */ 5011 void cfg80211_ch_switch_started_notify(struct net_device *dev, 5012 struct cfg80211_chan_def *chandef, 5013 u8 count); 5014 5015 /** 5016 * ieee80211_operating_class_to_band - convert operating class to band 5017 * 5018 * @operating_class: the operating class to convert 5019 * @band: band pointer to fill 5020 * 5021 * Returns %true if the conversion was successful, %false otherwise. 5022 */ 5023 bool ieee80211_operating_class_to_band(u8 operating_class, 5024 enum ieee80211_band *band); 5025 5026 /** 5027 * ieee80211_chandef_to_operating_class - convert chandef to operation class 5028 * 5029 * @chandef: the chandef to convert 5030 * @op_class: a pointer to the resulting operating class 5031 * 5032 * Returns %true if the conversion was successful, %false otherwise. 5033 */ 5034 bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef, 5035 u8 *op_class); 5036 5037 /* 5038 * cfg80211_tdls_oper_request - request userspace to perform TDLS operation 5039 * @dev: the device on which the operation is requested 5040 * @peer: the MAC address of the peer device 5041 * @oper: the requested TDLS operation (NL80211_TDLS_SETUP or 5042 * NL80211_TDLS_TEARDOWN) 5043 * @reason_code: the reason code for teardown request 5044 * @gfp: allocation flags 5045 * 5046 * This function is used to request userspace to perform TDLS operation that 5047 * requires knowledge of keys, i.e., link setup or teardown when the AP 5048 * connection uses encryption. This is optional mechanism for the driver to use 5049 * if it can automatically determine when a TDLS link could be useful (e.g., 5050 * based on traffic and signal strength for a peer). 5051 */ 5052 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 5053 enum nl80211_tdls_operation oper, 5054 u16 reason_code, gfp_t gfp); 5055 5056 /* 5057 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units) 5058 * @rate: given rate_info to calculate bitrate from 5059 * 5060 * return 0 if MCS index >= 32 5061 */ 5062 u32 cfg80211_calculate_bitrate(struct rate_info *rate); 5063 5064 /** 5065 * cfg80211_unregister_wdev - remove the given wdev 5066 * @wdev: struct wireless_dev to remove 5067 * 5068 * Call this function only for wdevs that have no netdev assigned, 5069 * e.g. P2P Devices. It removes the device from the list so that 5070 * it can no longer be used. It is necessary to call this function 5071 * even when cfg80211 requests the removal of the interface by 5072 * calling the del_virtual_intf() callback. The function must also 5073 * be called when the driver wishes to unregister the wdev, e.g. 5074 * when the device is unbound from the driver. 5075 * 5076 * Requires the RTNL to be held. 5077 */ 5078 void cfg80211_unregister_wdev(struct wireless_dev *wdev); 5079 5080 /** 5081 * struct cfg80211_ft_event - FT Information Elements 5082 * @ies: FT IEs 5083 * @ies_len: length of the FT IE in bytes 5084 * @target_ap: target AP's MAC address 5085 * @ric_ies: RIC IE 5086 * @ric_ies_len: length of the RIC IE in bytes 5087 */ 5088 struct cfg80211_ft_event_params { 5089 const u8 *ies; 5090 size_t ies_len; 5091 const u8 *target_ap; 5092 const u8 *ric_ies; 5093 size_t ric_ies_len; 5094 }; 5095 5096 /** 5097 * cfg80211_ft_event - notify userspace about FT IE and RIC IE 5098 * @netdev: network device 5099 * @ft_event: IE information 5100 */ 5101 void cfg80211_ft_event(struct net_device *netdev, 5102 struct cfg80211_ft_event_params *ft_event); 5103 5104 /** 5105 * cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer 5106 * @ies: the input IE buffer 5107 * @len: the input length 5108 * @attr: the attribute ID to find 5109 * @buf: output buffer, can be %NULL if the data isn't needed, e.g. 5110 * if the function is only called to get the needed buffer size 5111 * @bufsize: size of the output buffer 5112 * 5113 * The function finds a given P2P attribute in the (vendor) IEs and 5114 * copies its contents to the given buffer. 5115 * 5116 * Return: A negative error code (-%EILSEQ or -%ENOENT) if the data is 5117 * malformed or the attribute can't be found (respectively), or the 5118 * length of the found attribute (which can be zero). 5119 */ 5120 int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len, 5121 enum ieee80211_p2p_attr_id attr, 5122 u8 *buf, unsigned int bufsize); 5123 5124 /** 5125 * ieee80211_ie_split_ric - split an IE buffer according to ordering (with RIC) 5126 * @ies: the IE buffer 5127 * @ielen: the length of the IE buffer 5128 * @ids: an array with element IDs that are allowed before 5129 * the split 5130 * @n_ids: the size of the element ID array 5131 * @after_ric: array IE types that come after the RIC element 5132 * @n_after_ric: size of the @after_ric array 5133 * @offset: offset where to start splitting in the buffer 5134 * 5135 * This function splits an IE buffer by updating the @offset 5136 * variable to point to the location where the buffer should be 5137 * split. 5138 * 5139 * It assumes that the given IE buffer is well-formed, this 5140 * has to be guaranteed by the caller! 5141 * 5142 * It also assumes that the IEs in the buffer are ordered 5143 * correctly, if not the result of using this function will not 5144 * be ordered correctly either, i.e. it does no reordering. 5145 * 5146 * The function returns the offset where the next part of the 5147 * buffer starts, which may be @ielen if the entire (remainder) 5148 * of the buffer should be used. 5149 */ 5150 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen, 5151 const u8 *ids, int n_ids, 5152 const u8 *after_ric, int n_after_ric, 5153 size_t offset); 5154 5155 /** 5156 * ieee80211_ie_split - split an IE buffer according to ordering 5157 * @ies: the IE buffer 5158 * @ielen: the length of the IE buffer 5159 * @ids: an array with element IDs that are allowed before 5160 * the split 5161 * @n_ids: the size of the element ID array 5162 * @offset: offset where to start splitting in the buffer 5163 * 5164 * This function splits an IE buffer by updating the @offset 5165 * variable to point to the location where the buffer should be 5166 * split. 5167 * 5168 * It assumes that the given IE buffer is well-formed, this 5169 * has to be guaranteed by the caller! 5170 * 5171 * It also assumes that the IEs in the buffer are ordered 5172 * correctly, if not the result of using this function will not 5173 * be ordered correctly either, i.e. it does no reordering. 5174 * 5175 * The function returns the offset where the next part of the 5176 * buffer starts, which may be @ielen if the entire (remainder) 5177 * of the buffer should be used. 5178 */ 5179 static inline size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 5180 const u8 *ids, int n_ids, size_t offset) 5181 { 5182 return ieee80211_ie_split_ric(ies, ielen, ids, n_ids, NULL, 0, offset); 5183 } 5184 5185 /** 5186 * cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN 5187 * @wdev: the wireless device reporting the wakeup 5188 * @wakeup: the wakeup report 5189 * @gfp: allocation flags 5190 * 5191 * This function reports that the given device woke up. If it 5192 * caused the wakeup, report the reason(s), otherwise you may 5193 * pass %NULL as the @wakeup parameter to advertise that something 5194 * else caused the wakeup. 5195 */ 5196 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 5197 struct cfg80211_wowlan_wakeup *wakeup, 5198 gfp_t gfp); 5199 5200 /** 5201 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver. 5202 * 5203 * @wdev: the wireless device for which critical protocol is stopped. 5204 * @gfp: allocation flags 5205 * 5206 * This function can be called by the driver to indicate it has reverted 5207 * operation back to normal. One reason could be that the duration given 5208 * by .crit_proto_start() has expired. 5209 */ 5210 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp); 5211 5212 /** 5213 * ieee80211_get_num_supported_channels - get number of channels device has 5214 * @wiphy: the wiphy 5215 * 5216 * Return: the number of channels supported by the device. 5217 */ 5218 unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy); 5219 5220 /** 5221 * cfg80211_check_combinations - check interface combinations 5222 * 5223 * @wiphy: the wiphy 5224 * @num_different_channels: the number of different channels we want 5225 * to use for verification 5226 * @radar_detect: a bitmap where each bit corresponds to a channel 5227 * width where radar detection is needed, as in the definition of 5228 * &struct ieee80211_iface_combination.@radar_detect_widths 5229 * @iftype_num: array with the numbers of interfaces of each interface 5230 * type. The index is the interface type as specified in &enum 5231 * nl80211_iftype. 5232 * 5233 * This function can be called by the driver to check whether a 5234 * combination of interfaces and their types are allowed according to 5235 * the interface combinations. 5236 */ 5237 int cfg80211_check_combinations(struct wiphy *wiphy, 5238 const int num_different_channels, 5239 const u8 radar_detect, 5240 const int iftype_num[NUM_NL80211_IFTYPES]); 5241 5242 /** 5243 * cfg80211_iter_combinations - iterate over matching combinations 5244 * 5245 * @wiphy: the wiphy 5246 * @num_different_channels: the number of different channels we want 5247 * to use for verification 5248 * @radar_detect: a bitmap where each bit corresponds to a channel 5249 * width where radar detection is needed, as in the definition of 5250 * &struct ieee80211_iface_combination.@radar_detect_widths 5251 * @iftype_num: array with the numbers of interfaces of each interface 5252 * type. The index is the interface type as specified in &enum 5253 * nl80211_iftype. 5254 * @iter: function to call for each matching combination 5255 * @data: pointer to pass to iter function 5256 * 5257 * This function can be called by the driver to check what possible 5258 * combinations it fits in at a given moment, e.g. for channel switching 5259 * purposes. 5260 */ 5261 int cfg80211_iter_combinations(struct wiphy *wiphy, 5262 const int num_different_channels, 5263 const u8 radar_detect, 5264 const int iftype_num[NUM_NL80211_IFTYPES], 5265 void (*iter)(const struct ieee80211_iface_combination *c, 5266 void *data), 5267 void *data); 5268 5269 /* 5270 * cfg80211_stop_iface - trigger interface disconnection 5271 * 5272 * @wiphy: the wiphy 5273 * @wdev: wireless device 5274 * @gfp: context flags 5275 * 5276 * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA 5277 * disconnected. 5278 * 5279 * Note: This doesn't need any locks and is asynchronous. 5280 */ 5281 void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, 5282 gfp_t gfp); 5283 5284 /** 5285 * cfg80211_shutdown_all_interfaces - shut down all interfaces for a wiphy 5286 * @wiphy: the wiphy to shut down 5287 * 5288 * This function shuts down all interfaces belonging to this wiphy by 5289 * calling dev_close() (and treating non-netdev interfaces as needed). 5290 * It shouldn't really be used unless there are some fatal device errors 5291 * that really can't be recovered in any other way. 5292 * 5293 * Callers must hold the RTNL and be able to deal with callbacks into 5294 * the driver while the function is running. 5295 */ 5296 void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy); 5297 5298 /** 5299 * wiphy_ext_feature_set - set the extended feature flag 5300 * 5301 * @wiphy: the wiphy to modify. 5302 * @ftidx: extended feature bit index. 5303 * 5304 * The extended features are flagged in multiple bytes (see 5305 * &struct wiphy.@ext_features) 5306 */ 5307 static inline void wiphy_ext_feature_set(struct wiphy *wiphy, 5308 enum nl80211_ext_feature_index ftidx) 5309 { 5310 u8 *ft_byte; 5311 5312 ft_byte = &wiphy->ext_features[ftidx / 8]; 5313 *ft_byte |= BIT(ftidx % 8); 5314 } 5315 5316 /** 5317 * wiphy_ext_feature_isset - check the extended feature flag 5318 * 5319 * @wiphy: the wiphy to modify. 5320 * @ftidx: extended feature bit index. 5321 * 5322 * The extended features are flagged in multiple bytes (see 5323 * &struct wiphy.@ext_features) 5324 */ 5325 static inline bool 5326 wiphy_ext_feature_isset(struct wiphy *wiphy, 5327 enum nl80211_ext_feature_index ftidx) 5328 { 5329 u8 ft_byte; 5330 5331 ft_byte = wiphy->ext_features[ftidx / 8]; 5332 return (ft_byte & BIT(ftidx % 8)) != 0; 5333 } 5334 5335 /* ethtool helper */ 5336 void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info); 5337 5338 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 5339 5340 /* wiphy_printk helpers, similar to dev_printk */ 5341 5342 #define wiphy_printk(level, wiphy, format, args...) \ 5343 dev_printk(level, &(wiphy)->dev, format, ##args) 5344 #define wiphy_emerg(wiphy, format, args...) \ 5345 dev_emerg(&(wiphy)->dev, format, ##args) 5346 #define wiphy_alert(wiphy, format, args...) \ 5347 dev_alert(&(wiphy)->dev, format, ##args) 5348 #define wiphy_crit(wiphy, format, args...) \ 5349 dev_crit(&(wiphy)->dev, format, ##args) 5350 #define wiphy_err(wiphy, format, args...) \ 5351 dev_err(&(wiphy)->dev, format, ##args) 5352 #define wiphy_warn(wiphy, format, args...) \ 5353 dev_warn(&(wiphy)->dev, format, ##args) 5354 #define wiphy_notice(wiphy, format, args...) \ 5355 dev_notice(&(wiphy)->dev, format, ##args) 5356 #define wiphy_info(wiphy, format, args...) \ 5357 dev_info(&(wiphy)->dev, format, ##args) 5358 5359 #define wiphy_debug(wiphy, format, args...) \ 5360 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 5361 5362 #define wiphy_dbg(wiphy, format, args...) \ 5363 dev_dbg(&(wiphy)->dev, format, ##args) 5364 5365 #if defined(VERBOSE_DEBUG) 5366 #define wiphy_vdbg wiphy_dbg 5367 #else 5368 #define wiphy_vdbg(wiphy, format, args...) \ 5369 ({ \ 5370 if (0) \ 5371 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 5372 0; \ 5373 }) 5374 #endif 5375 5376 /* 5377 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 5378 * of using a WARN/WARN_ON to get the message out, including the 5379 * file/line information and a backtrace. 5380 */ 5381 #define wiphy_WARN(wiphy, format, args...) \ 5382 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 5383 5384 #endif /* __NET_CFG80211_H */ 5385