1 #ifndef __NET_CFG80211_H 2 #define __NET_CFG80211_H 3 /* 4 * 802.11 device and configuration interface 5 * 6 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/netdevice.h> 14 #include <linux/debugfs.h> 15 #include <linux/list.h> 16 #include <linux/netlink.h> 17 #include <linux/skbuff.h> 18 #include <linux/nl80211.h> 19 #include <linux/if_ether.h> 20 #include <linux/ieee80211.h> 21 #include <net/regulatory.h> 22 23 /* remove once we remove the wext stuff */ 24 #include <net/iw_handler.h> 25 #include <linux/wireless.h> 26 27 28 /** 29 * DOC: Introduction 30 * 31 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 32 * userspace and drivers, and offers some utility functionality associated 33 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 34 * by all modern wireless drivers in Linux, so that they offer a consistent 35 * API through nl80211. For backward compatibility, cfg80211 also offers 36 * wireless extensions to userspace, but hides them from drivers completely. 37 * 38 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 39 * use restrictions. 40 */ 41 42 43 /** 44 * DOC: Device registration 45 * 46 * In order for a driver to use cfg80211, it must register the hardware device 47 * with cfg80211. This happens through a number of hardware capability structs 48 * described below. 49 * 50 * The fundamental structure for each device is the 'wiphy', of which each 51 * instance describes a physical wireless device connected to the system. Each 52 * such wiphy can have zero, one, or many virtual interfaces associated with 53 * it, which need to be identified as such by pointing the network interface's 54 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 55 * the wireless part of the interface, normally this struct is embedded in the 56 * network interface's private data area. Drivers can optionally allow creating 57 * or destroying virtual interfaces on the fly, but without at least one or the 58 * ability to create some the wireless device isn't useful. 59 * 60 * Each wiphy structure contains device capability information, and also has 61 * a pointer to the various operations the driver offers. The definitions and 62 * structures here describe these capabilities in detail. 63 */ 64 65 /* 66 * wireless hardware capability structures 67 */ 68 69 /** 70 * enum ieee80211_band - supported frequency bands 71 * 72 * The bands are assigned this way because the supported 73 * bitrates differ in these bands. 74 * 75 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 76 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 77 * @IEEE80211_NUM_BANDS: number of defined bands 78 */ 79 enum ieee80211_band { 80 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 81 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 82 83 /* keep last */ 84 IEEE80211_NUM_BANDS 85 }; 86 87 /** 88 * enum ieee80211_channel_flags - channel flags 89 * 90 * Channel flags set by the regulatory control code. 91 * 92 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 93 * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted 94 * on this channel. 95 * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. 96 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 97 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 98 * is not permitted. 99 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 100 * is not permitted. 101 */ 102 enum ieee80211_channel_flags { 103 IEEE80211_CHAN_DISABLED = 1<<0, 104 IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, 105 IEEE80211_CHAN_NO_IBSS = 1<<2, 106 IEEE80211_CHAN_RADAR = 1<<3, 107 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 108 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 109 }; 110 111 #define IEEE80211_CHAN_NO_HT40 \ 112 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 113 114 /** 115 * struct ieee80211_channel - channel definition 116 * 117 * This structure describes a single channel for use 118 * with cfg80211. 119 * 120 * @center_freq: center frequency in MHz 121 * @hw_value: hardware-specific value for the channel 122 * @flags: channel flags from &enum ieee80211_channel_flags. 123 * @orig_flags: channel flags at registration time, used by regulatory 124 * code to support devices with additional restrictions 125 * @band: band this channel belongs to. 126 * @max_antenna_gain: maximum antenna gain in dBi 127 * @max_power: maximum transmission power (in dBm) 128 * @beacon_found: helper to regulatory code to indicate when a beacon 129 * has been found on this channel. Use regulatory_hint_found_beacon() 130 * to enable this, this is useful only on 5 GHz band. 131 * @orig_mag: internal use 132 * @orig_mpwr: internal use 133 */ 134 struct ieee80211_channel { 135 enum ieee80211_band band; 136 u16 center_freq; 137 u16 hw_value; 138 u32 flags; 139 int max_antenna_gain; 140 int max_power; 141 bool beacon_found; 142 u32 orig_flags; 143 int orig_mag, orig_mpwr; 144 }; 145 146 /** 147 * enum ieee80211_rate_flags - rate flags 148 * 149 * Hardware/specification flags for rates. These are structured 150 * in a way that allows using the same bitrate structure for 151 * different bands/PHY modes. 152 * 153 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 154 * preamble on this bitrate; only relevant in 2.4GHz band and 155 * with CCK rates. 156 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 157 * when used with 802.11a (on the 5 GHz band); filled by the 158 * core code when registering the wiphy. 159 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 160 * when used with 802.11b (on the 2.4 GHz band); filled by the 161 * core code when registering the wiphy. 162 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 163 * when used with 802.11g (on the 2.4 GHz band); filled by the 164 * core code when registering the wiphy. 165 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 166 */ 167 enum ieee80211_rate_flags { 168 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 169 IEEE80211_RATE_MANDATORY_A = 1<<1, 170 IEEE80211_RATE_MANDATORY_B = 1<<2, 171 IEEE80211_RATE_MANDATORY_G = 1<<3, 172 IEEE80211_RATE_ERP_G = 1<<4, 173 }; 174 175 /** 176 * struct ieee80211_rate - bitrate definition 177 * 178 * This structure describes a bitrate that an 802.11 PHY can 179 * operate with. The two values @hw_value and @hw_value_short 180 * are only for driver use when pointers to this structure are 181 * passed around. 182 * 183 * @flags: rate-specific flags 184 * @bitrate: bitrate in units of 100 Kbps 185 * @hw_value: driver/hardware value for this rate 186 * @hw_value_short: driver/hardware value for this rate when 187 * short preamble is used 188 */ 189 struct ieee80211_rate { 190 u32 flags; 191 u16 bitrate; 192 u16 hw_value, hw_value_short; 193 }; 194 195 /** 196 * struct ieee80211_sta_ht_cap - STA's HT capabilities 197 * 198 * This structure describes most essential parameters needed 199 * to describe 802.11n HT capabilities for an STA. 200 * 201 * @ht_supported: is HT supported by the STA 202 * @cap: HT capabilities map as described in 802.11n spec 203 * @ampdu_factor: Maximum A-MPDU length factor 204 * @ampdu_density: Minimum A-MPDU spacing 205 * @mcs: Supported MCS rates 206 */ 207 struct ieee80211_sta_ht_cap { 208 u16 cap; /* use IEEE80211_HT_CAP_ */ 209 bool ht_supported; 210 u8 ampdu_factor; 211 u8 ampdu_density; 212 struct ieee80211_mcs_info mcs; 213 }; 214 215 /** 216 * struct ieee80211_supported_band - frequency band definition 217 * 218 * This structure describes a frequency band a wiphy 219 * is able to operate in. 220 * 221 * @channels: Array of channels the hardware can operate in 222 * in this band. 223 * @band: the band this structure represents 224 * @n_channels: Number of channels in @channels 225 * @bitrates: Array of bitrates the hardware can operate with 226 * in this band. Must be sorted to give a valid "supported 227 * rates" IE, i.e. CCK rates first, then OFDM. 228 * @n_bitrates: Number of bitrates in @bitrates 229 * @ht_cap: HT capabilities in this band 230 */ 231 struct ieee80211_supported_band { 232 struct ieee80211_channel *channels; 233 struct ieee80211_rate *bitrates; 234 enum ieee80211_band band; 235 int n_channels; 236 int n_bitrates; 237 struct ieee80211_sta_ht_cap ht_cap; 238 }; 239 240 /* 241 * Wireless hardware/device configuration structures and methods 242 */ 243 244 /** 245 * DOC: Actions and configuration 246 * 247 * Each wireless device and each virtual interface offer a set of configuration 248 * operations and other actions that are invoked by userspace. Each of these 249 * actions is described in the operations structure, and the parameters these 250 * operations use are described separately. 251 * 252 * Additionally, some operations are asynchronous and expect to get status 253 * information via some functions that drivers need to call. 254 * 255 * Scanning and BSS list handling with its associated functionality is described 256 * in a separate chapter. 257 */ 258 259 /** 260 * struct vif_params - describes virtual interface parameters 261 * @use_4addr: use 4-address frames 262 */ 263 struct vif_params { 264 int use_4addr; 265 }; 266 267 /** 268 * struct key_params - key information 269 * 270 * Information about a key 271 * 272 * @key: key material 273 * @key_len: length of key material 274 * @cipher: cipher suite selector 275 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 276 * with the get_key() callback, must be in little endian, 277 * length given by @seq_len. 278 * @seq_len: length of @seq. 279 */ 280 struct key_params { 281 u8 *key; 282 u8 *seq; 283 int key_len; 284 int seq_len; 285 u32 cipher; 286 }; 287 288 /** 289 * enum survey_info_flags - survey information flags 290 * 291 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 292 * @SURVEY_INFO_IN_USE: channel is currently being used 293 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in 294 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in 295 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in 296 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in 297 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in 298 * 299 * Used by the driver to indicate which info in &struct survey_info 300 * it has filled in during the get_survey(). 301 */ 302 enum survey_info_flags { 303 SURVEY_INFO_NOISE_DBM = 1<<0, 304 SURVEY_INFO_IN_USE = 1<<1, 305 SURVEY_INFO_CHANNEL_TIME = 1<<2, 306 SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, 307 SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, 308 SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, 309 SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, 310 }; 311 312 /** 313 * struct survey_info - channel survey response 314 * 315 * @channel: the channel this survey record reports, mandatory 316 * @filled: bitflag of flags from &enum survey_info_flags 317 * @noise: channel noise in dBm. This and all following fields are 318 * optional 319 * @channel_time: amount of time in ms the radio spent on the channel 320 * @channel_time_busy: amount of time the primary channel was sensed busy 321 * @channel_time_ext_busy: amount of time the extension channel was sensed busy 322 * @channel_time_rx: amount of time the radio spent receiving data 323 * @channel_time_tx: amount of time the radio spent transmitting data 324 * 325 * Used by dump_survey() to report back per-channel survey information. 326 * 327 * This structure can later be expanded with things like 328 * channel duty cycle etc. 329 */ 330 struct survey_info { 331 struct ieee80211_channel *channel; 332 u64 channel_time; 333 u64 channel_time_busy; 334 u64 channel_time_ext_busy; 335 u64 channel_time_rx; 336 u64 channel_time_tx; 337 u32 filled; 338 s8 noise; 339 }; 340 341 /** 342 * struct beacon_parameters - beacon parameters 343 * 344 * Used to configure the beacon for an interface. 345 * 346 * @head: head portion of beacon (before TIM IE) 347 * or %NULL if not changed 348 * @tail: tail portion of beacon (after TIM IE) 349 * or %NULL if not changed 350 * @interval: beacon interval or zero if not changed 351 * @dtim_period: DTIM period or zero if not changed 352 * @head_len: length of @head 353 * @tail_len: length of @tail 354 */ 355 struct beacon_parameters { 356 u8 *head, *tail; 357 int interval, dtim_period; 358 int head_len, tail_len; 359 }; 360 361 /** 362 * enum plink_action - actions to perform in mesh peers 363 * 364 * @PLINK_ACTION_INVALID: action 0 is reserved 365 * @PLINK_ACTION_OPEN: start mesh peer link establishment 366 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer 367 */ 368 enum plink_actions { 369 PLINK_ACTION_INVALID, 370 PLINK_ACTION_OPEN, 371 PLINK_ACTION_BLOCK, 372 }; 373 374 /** 375 * struct station_parameters - station parameters 376 * 377 * Used to change and create a new station. 378 * 379 * @vlan: vlan interface station should belong to 380 * @supported_rates: supported rates in IEEE 802.11 format 381 * (or NULL for no change) 382 * @supported_rates_len: number of supported rates 383 * @sta_flags_mask: station flags that changed 384 * (bitmask of BIT(NL80211_STA_FLAG_...)) 385 * @sta_flags_set: station flags values 386 * (bitmask of BIT(NL80211_STA_FLAG_...)) 387 * @listen_interval: listen interval or -1 for no change 388 * @aid: AID or zero for no change 389 * @plink_action: plink action to take 390 * @ht_capa: HT capabilities of station 391 */ 392 struct station_parameters { 393 u8 *supported_rates; 394 struct net_device *vlan; 395 u32 sta_flags_mask, sta_flags_set; 396 int listen_interval; 397 u16 aid; 398 u8 supported_rates_len; 399 u8 plink_action; 400 struct ieee80211_ht_cap *ht_capa; 401 }; 402 403 /** 404 * enum station_info_flags - station information flags 405 * 406 * Used by the driver to indicate which info in &struct station_info 407 * it has filled in during get_station() or dump_station(). 408 * 409 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 410 * @STATION_INFO_RX_BYTES: @rx_bytes filled 411 * @STATION_INFO_TX_BYTES: @tx_bytes filled 412 * @STATION_INFO_LLID: @llid filled 413 * @STATION_INFO_PLID: @plid filled 414 * @STATION_INFO_PLINK_STATE: @plink_state filled 415 * @STATION_INFO_SIGNAL: @signal filled 416 * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled 417 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 418 * @STATION_INFO_RX_PACKETS: @rx_packets filled 419 * @STATION_INFO_TX_PACKETS: @tx_packets filled 420 * @STATION_INFO_TX_RETRIES: @tx_retries filled 421 * @STATION_INFO_TX_FAILED: @tx_failed filled 422 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled 423 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled 424 */ 425 enum station_info_flags { 426 STATION_INFO_INACTIVE_TIME = 1<<0, 427 STATION_INFO_RX_BYTES = 1<<1, 428 STATION_INFO_TX_BYTES = 1<<2, 429 STATION_INFO_LLID = 1<<3, 430 STATION_INFO_PLID = 1<<4, 431 STATION_INFO_PLINK_STATE = 1<<5, 432 STATION_INFO_SIGNAL = 1<<6, 433 STATION_INFO_TX_BITRATE = 1<<7, 434 STATION_INFO_RX_PACKETS = 1<<8, 435 STATION_INFO_TX_PACKETS = 1<<9, 436 STATION_INFO_TX_RETRIES = 1<<10, 437 STATION_INFO_TX_FAILED = 1<<11, 438 STATION_INFO_RX_DROP_MISC = 1<<12, 439 STATION_INFO_SIGNAL_AVG = 1<<13, 440 }; 441 442 /** 443 * enum station_info_rate_flags - bitrate info flags 444 * 445 * Used by the driver to indicate the specific rate transmission 446 * type for 802.11n transmissions. 447 * 448 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled 449 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission 450 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 451 */ 452 enum rate_info_flags { 453 RATE_INFO_FLAGS_MCS = 1<<0, 454 RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, 455 RATE_INFO_FLAGS_SHORT_GI = 1<<2, 456 }; 457 458 /** 459 * struct rate_info - bitrate information 460 * 461 * Information about a receiving or transmitting bitrate 462 * 463 * @flags: bitflag of flags from &enum rate_info_flags 464 * @mcs: mcs index if struct describes a 802.11n bitrate 465 * @legacy: bitrate in 100kbit/s for 802.11abg 466 */ 467 struct rate_info { 468 u8 flags; 469 u8 mcs; 470 u16 legacy; 471 }; 472 473 /** 474 * struct station_info - station information 475 * 476 * Station information filled by driver for get_station() and dump_station. 477 * 478 * @filled: bitflag of flags from &enum station_info_flags 479 * @inactive_time: time since last station activity (tx/rx) in milliseconds 480 * @rx_bytes: bytes received from this station 481 * @tx_bytes: bytes transmitted to this station 482 * @llid: mesh local link id 483 * @plid: mesh peer link id 484 * @plink_state: mesh peer link state 485 * @signal: signal strength of last received packet in dBm 486 * @signal_avg: signal strength average in dBm 487 * @txrate: current unicast bitrate to this station 488 * @rx_packets: packets received from this station 489 * @tx_packets: packets transmitted to this station 490 * @tx_retries: cumulative retry counts 491 * @tx_failed: number of failed transmissions (retries exceeded, no ACK) 492 * @rx_dropped_misc: Dropped for un-specified reason. 493 * @generation: generation number for nl80211 dumps. 494 * This number should increase every time the list of stations 495 * changes, i.e. when a station is added or removed, so that 496 * userspace can tell whether it got a consistent snapshot. 497 */ 498 struct station_info { 499 u32 filled; 500 u32 inactive_time; 501 u32 rx_bytes; 502 u32 tx_bytes; 503 u16 llid; 504 u16 plid; 505 u8 plink_state; 506 s8 signal; 507 s8 signal_avg; 508 struct rate_info txrate; 509 u32 rx_packets; 510 u32 tx_packets; 511 u32 tx_retries; 512 u32 tx_failed; 513 u32 rx_dropped_misc; 514 515 int generation; 516 }; 517 518 /** 519 * enum monitor_flags - monitor flags 520 * 521 * Monitor interface configuration flags. Note that these must be the bits 522 * according to the nl80211 flags. 523 * 524 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 525 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 526 * @MONITOR_FLAG_CONTROL: pass control frames 527 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 528 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 529 */ 530 enum monitor_flags { 531 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 532 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 533 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 534 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 535 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 536 }; 537 538 /** 539 * enum mpath_info_flags - mesh path information flags 540 * 541 * Used by the driver to indicate which info in &struct mpath_info it has filled 542 * in during get_station() or dump_station(). 543 * 544 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 545 * @MPATH_INFO_SN: @sn filled 546 * @MPATH_INFO_METRIC: @metric filled 547 * @MPATH_INFO_EXPTIME: @exptime filled 548 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 549 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 550 * @MPATH_INFO_FLAGS: @flags filled 551 */ 552 enum mpath_info_flags { 553 MPATH_INFO_FRAME_QLEN = BIT(0), 554 MPATH_INFO_SN = BIT(1), 555 MPATH_INFO_METRIC = BIT(2), 556 MPATH_INFO_EXPTIME = BIT(3), 557 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 558 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 559 MPATH_INFO_FLAGS = BIT(6), 560 }; 561 562 /** 563 * struct mpath_info - mesh path information 564 * 565 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 566 * 567 * @filled: bitfield of flags from &enum mpath_info_flags 568 * @frame_qlen: number of queued frames for this destination 569 * @sn: target sequence number 570 * @metric: metric (cost) of this mesh path 571 * @exptime: expiration time for the mesh path from now, in msecs 572 * @flags: mesh path flags 573 * @discovery_timeout: total mesh path discovery timeout, in msecs 574 * @discovery_retries: mesh path discovery retries 575 * @generation: generation number for nl80211 dumps. 576 * This number should increase every time the list of mesh paths 577 * changes, i.e. when a station is added or removed, so that 578 * userspace can tell whether it got a consistent snapshot. 579 */ 580 struct mpath_info { 581 u32 filled; 582 u32 frame_qlen; 583 u32 sn; 584 u32 metric; 585 u32 exptime; 586 u32 discovery_timeout; 587 u8 discovery_retries; 588 u8 flags; 589 590 int generation; 591 }; 592 593 /** 594 * struct bss_parameters - BSS parameters 595 * 596 * Used to change BSS parameters (mainly for AP mode). 597 * 598 * @use_cts_prot: Whether to use CTS protection 599 * (0 = no, 1 = yes, -1 = do not change) 600 * @use_short_preamble: Whether the use of short preambles is allowed 601 * (0 = no, 1 = yes, -1 = do not change) 602 * @use_short_slot_time: Whether the use of short slot time is allowed 603 * (0 = no, 1 = yes, -1 = do not change) 604 * @basic_rates: basic rates in IEEE 802.11 format 605 * (or NULL for no change) 606 * @basic_rates_len: number of basic rates 607 * @ap_isolate: do not forward packets between connected stations 608 * @ht_opmode: HT Operation mode 609 * (u16 = opmode, -1 = do not change) 610 */ 611 struct bss_parameters { 612 int use_cts_prot; 613 int use_short_preamble; 614 int use_short_slot_time; 615 u8 *basic_rates; 616 u8 basic_rates_len; 617 int ap_isolate; 618 int ht_opmode; 619 }; 620 621 /* 622 * struct mesh_config - 802.11s mesh configuration 623 * 624 * These parameters can be changed while the mesh is active. 625 */ 626 struct mesh_config { 627 /* Timeouts in ms */ 628 /* Mesh plink management parameters */ 629 u16 dot11MeshRetryTimeout; 630 u16 dot11MeshConfirmTimeout; 631 u16 dot11MeshHoldingTimeout; 632 u16 dot11MeshMaxPeerLinks; 633 u8 dot11MeshMaxRetries; 634 u8 dot11MeshTTL; 635 /* ttl used in path selection information elements */ 636 u8 element_ttl; 637 bool auto_open_plinks; 638 /* HWMP parameters */ 639 u8 dot11MeshHWMPmaxPREQretries; 640 u32 path_refresh_time; 641 u16 min_discovery_timeout; 642 u32 dot11MeshHWMPactivePathTimeout; 643 u16 dot11MeshHWMPpreqMinInterval; 644 u16 dot11MeshHWMPnetDiameterTraversalTime; 645 u8 dot11MeshHWMPRootMode; 646 }; 647 648 /** 649 * struct mesh_setup - 802.11s mesh setup configuration 650 * @mesh_id: the mesh ID 651 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 652 * @path_sel_proto: which path selection protocol to use 653 * @path_metric: which metric to use 654 * @vendor_ie: vendor information elements (optional) 655 * @vendor_ie_len: length of vendor information elements 656 * 657 * These parameters are fixed when the mesh is created. 658 */ 659 struct mesh_setup { 660 const u8 *mesh_id; 661 u8 mesh_id_len; 662 u8 path_sel_proto; 663 u8 path_metric; 664 const u8 *vendor_ie; 665 u8 vendor_ie_len; 666 }; 667 668 /** 669 * struct ieee80211_txq_params - TX queue parameters 670 * @queue: TX queue identifier (NL80211_TXQ_Q_*) 671 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 672 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 673 * 1..32767] 674 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 675 * 1..32767] 676 * @aifs: Arbitration interframe space [0..255] 677 */ 678 struct ieee80211_txq_params { 679 enum nl80211_txq_q queue; 680 u16 txop; 681 u16 cwmin; 682 u16 cwmax; 683 u8 aifs; 684 }; 685 686 /* from net/wireless.h */ 687 struct wiphy; 688 689 /** 690 * DOC: Scanning and BSS list handling 691 * 692 * The scanning process itself is fairly simple, but cfg80211 offers quite 693 * a bit of helper functionality. To start a scan, the scan operation will 694 * be invoked with a scan definition. This scan definition contains the 695 * channels to scan, and the SSIDs to send probe requests for (including the 696 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 697 * probe. Additionally, a scan request may contain extra information elements 698 * that should be added to the probe request. The IEs are guaranteed to be 699 * well-formed, and will not exceed the maximum length the driver advertised 700 * in the wiphy structure. 701 * 702 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 703 * it is responsible for maintaining the BSS list; the driver should not 704 * maintain a list itself. For this notification, various functions exist. 705 * 706 * Since drivers do not maintain a BSS list, there are also a number of 707 * functions to search for a BSS and obtain information about it from the 708 * BSS structure cfg80211 maintains. The BSS list is also made available 709 * to userspace. 710 */ 711 712 /** 713 * struct cfg80211_ssid - SSID description 714 * @ssid: the SSID 715 * @ssid_len: length of the ssid 716 */ 717 struct cfg80211_ssid { 718 u8 ssid[IEEE80211_MAX_SSID_LEN]; 719 u8 ssid_len; 720 }; 721 722 /** 723 * struct cfg80211_scan_request - scan request description 724 * 725 * @ssids: SSIDs to scan for (active scan only) 726 * @n_ssids: number of SSIDs 727 * @channels: channels to scan on. 728 * @n_channels: total number of channels to scan 729 * @ie: optional information element(s) to add into Probe Request or %NULL 730 * @ie_len: length of ie in octets 731 * @wiphy: the wiphy this was for 732 * @dev: the interface 733 * @aborted: (internal) scan request was notified as aborted 734 */ 735 struct cfg80211_scan_request { 736 struct cfg80211_ssid *ssids; 737 int n_ssids; 738 u32 n_channels; 739 const u8 *ie; 740 size_t ie_len; 741 742 /* internal */ 743 struct wiphy *wiphy; 744 struct net_device *dev; 745 bool aborted; 746 747 /* keep last */ 748 struct ieee80211_channel *channels[0]; 749 }; 750 751 /** 752 * enum cfg80211_signal_type - signal type 753 * 754 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 755 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 756 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 757 */ 758 enum cfg80211_signal_type { 759 CFG80211_SIGNAL_TYPE_NONE, 760 CFG80211_SIGNAL_TYPE_MBM, 761 CFG80211_SIGNAL_TYPE_UNSPEC, 762 }; 763 764 /** 765 * struct cfg80211_bss - BSS description 766 * 767 * This structure describes a BSS (which may also be a mesh network) 768 * for use in scan results and similar. 769 * 770 * @channel: channel this BSS is on 771 * @bssid: BSSID of the BSS 772 * @tsf: timestamp of last received update 773 * @beacon_interval: the beacon interval as from the frame 774 * @capability: the capability field in host byte order 775 * @information_elements: the information elements (Note that there 776 * is no guarantee that these are well-formed!); this is a pointer to 777 * either the beacon_ies or proberesp_ies depending on whether Probe 778 * Response frame has been received 779 * @len_information_elements: total length of the information elements 780 * @beacon_ies: the information elements from the last Beacon frame 781 * @len_beacon_ies: total length of the beacon_ies 782 * @proberesp_ies: the information elements from the last Probe Response frame 783 * @len_proberesp_ies: total length of the proberesp_ies 784 * @signal: signal strength value (type depends on the wiphy's signal_type) 785 * @free_priv: function pointer to free private data 786 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 787 */ 788 struct cfg80211_bss { 789 struct ieee80211_channel *channel; 790 791 u8 bssid[ETH_ALEN]; 792 u64 tsf; 793 u16 beacon_interval; 794 u16 capability; 795 u8 *information_elements; 796 size_t len_information_elements; 797 u8 *beacon_ies; 798 size_t len_beacon_ies; 799 u8 *proberesp_ies; 800 size_t len_proberesp_ies; 801 802 s32 signal; 803 804 void (*free_priv)(struct cfg80211_bss *bss); 805 u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); 806 }; 807 808 /** 809 * ieee80211_bss_get_ie - find IE with given ID 810 * @bss: the bss to search 811 * @ie: the IE ID 812 * Returns %NULL if not found. 813 */ 814 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 815 816 817 /** 818 * struct cfg80211_crypto_settings - Crypto settings 819 * @wpa_versions: indicates which, if any, WPA versions are enabled 820 * (from enum nl80211_wpa_versions) 821 * @cipher_group: group key cipher suite (or 0 if unset) 822 * @n_ciphers_pairwise: number of AP supported unicast ciphers 823 * @ciphers_pairwise: unicast key cipher suites 824 * @n_akm_suites: number of AKM suites 825 * @akm_suites: AKM suites 826 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 827 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 828 * required to assume that the port is unauthorized until authorized by 829 * user space. Otherwise, port is marked authorized by default. 830 * @control_port_ethertype: the control port protocol that should be 831 * allowed through even on unauthorized ports 832 * @control_port_no_encrypt: TRUE to prevent encryption of control port 833 * protocol frames. 834 */ 835 struct cfg80211_crypto_settings { 836 u32 wpa_versions; 837 u32 cipher_group; 838 int n_ciphers_pairwise; 839 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 840 int n_akm_suites; 841 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 842 bool control_port; 843 __be16 control_port_ethertype; 844 bool control_port_no_encrypt; 845 }; 846 847 /** 848 * struct cfg80211_auth_request - Authentication request data 849 * 850 * This structure provides information needed to complete IEEE 802.11 851 * authentication. 852 * 853 * @bss: The BSS to authenticate with. 854 * @auth_type: Authentication type (algorithm) 855 * @ie: Extra IEs to add to Authentication frame or %NULL 856 * @ie_len: Length of ie buffer in octets 857 * @key_len: length of WEP key for shared key authentication 858 * @key_idx: index of WEP key for shared key authentication 859 * @key: WEP key for shared key authentication 860 * @local_state_change: This is a request for a local state only, i.e., no 861 * Authentication frame is to be transmitted and authentication state is 862 * to be changed without having to wait for a response from the peer STA 863 * (AP). 864 */ 865 struct cfg80211_auth_request { 866 struct cfg80211_bss *bss; 867 const u8 *ie; 868 size_t ie_len; 869 enum nl80211_auth_type auth_type; 870 const u8 *key; 871 u8 key_len, key_idx; 872 bool local_state_change; 873 }; 874 875 /** 876 * struct cfg80211_assoc_request - (Re)Association request data 877 * 878 * This structure provides information needed to complete IEEE 802.11 879 * (re)association. 880 * @bss: The BSS to associate with. 881 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 882 * @ie_len: Length of ie buffer in octets 883 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 884 * @crypto: crypto settings 885 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 886 */ 887 struct cfg80211_assoc_request { 888 struct cfg80211_bss *bss; 889 const u8 *ie, *prev_bssid; 890 size_t ie_len; 891 struct cfg80211_crypto_settings crypto; 892 bool use_mfp; 893 }; 894 895 /** 896 * struct cfg80211_deauth_request - Deauthentication request data 897 * 898 * This structure provides information needed to complete IEEE 802.11 899 * deauthentication. 900 * 901 * @bss: the BSS to deauthenticate from 902 * @ie: Extra IEs to add to Deauthentication frame or %NULL 903 * @ie_len: Length of ie buffer in octets 904 * @reason_code: The reason code for the deauthentication 905 * @local_state_change: This is a request for a local state only, i.e., no 906 * Deauthentication frame is to be transmitted. 907 */ 908 struct cfg80211_deauth_request { 909 struct cfg80211_bss *bss; 910 const u8 *ie; 911 size_t ie_len; 912 u16 reason_code; 913 bool local_state_change; 914 }; 915 916 /** 917 * struct cfg80211_disassoc_request - Disassociation request data 918 * 919 * This structure provides information needed to complete IEEE 802.11 920 * disassocation. 921 * 922 * @bss: the BSS to disassociate from 923 * @ie: Extra IEs to add to Disassociation frame or %NULL 924 * @ie_len: Length of ie buffer in octets 925 * @reason_code: The reason code for the disassociation 926 * @local_state_change: This is a request for a local state only, i.e., no 927 * Disassociation frame is to be transmitted. 928 */ 929 struct cfg80211_disassoc_request { 930 struct cfg80211_bss *bss; 931 const u8 *ie; 932 size_t ie_len; 933 u16 reason_code; 934 bool local_state_change; 935 }; 936 937 /** 938 * struct cfg80211_ibss_params - IBSS parameters 939 * 940 * This structure defines the IBSS parameters for the join_ibss() 941 * method. 942 * 943 * @ssid: The SSID, will always be non-null. 944 * @ssid_len: The length of the SSID, will always be non-zero. 945 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 946 * search for IBSSs with a different BSSID. 947 * @channel: The channel to use if no IBSS can be found to join. 948 * @channel_fixed: The channel should be fixed -- do not search for 949 * IBSSs to join on other channels. 950 * @ie: information element(s) to include in the beacon 951 * @ie_len: length of that 952 * @beacon_interval: beacon interval to use 953 * @privacy: this is a protected network, keys will be configured 954 * after joining 955 * @basic_rates: bitmap of basic rates to use when creating the IBSS 956 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 957 */ 958 struct cfg80211_ibss_params { 959 u8 *ssid; 960 u8 *bssid; 961 struct ieee80211_channel *channel; 962 u8 *ie; 963 u8 ssid_len, ie_len; 964 u16 beacon_interval; 965 u32 basic_rates; 966 bool channel_fixed; 967 bool privacy; 968 int mcast_rate[IEEE80211_NUM_BANDS]; 969 }; 970 971 /** 972 * struct cfg80211_connect_params - Connection parameters 973 * 974 * This structure provides information needed to complete IEEE 802.11 975 * authentication and association. 976 * 977 * @channel: The channel to use or %NULL if not specified (auto-select based 978 * on scan results) 979 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 980 * results) 981 * @ssid: SSID 982 * @ssid_len: Length of ssid in octets 983 * @auth_type: Authentication type (algorithm) 984 * @ie: IEs for association request 985 * @ie_len: Length of assoc_ie in octets 986 * @privacy: indicates whether privacy-enabled APs should be used 987 * @crypto: crypto settings 988 * @key_len: length of WEP key for shared key authentication 989 * @key_idx: index of WEP key for shared key authentication 990 * @key: WEP key for shared key authentication 991 */ 992 struct cfg80211_connect_params { 993 struct ieee80211_channel *channel; 994 u8 *bssid; 995 u8 *ssid; 996 size_t ssid_len; 997 enum nl80211_auth_type auth_type; 998 u8 *ie; 999 size_t ie_len; 1000 bool privacy; 1001 struct cfg80211_crypto_settings crypto; 1002 const u8 *key; 1003 u8 key_len, key_idx; 1004 }; 1005 1006 /** 1007 * enum wiphy_params_flags - set_wiphy_params bitfield values 1008 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1009 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1010 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1011 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1012 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1013 */ 1014 enum wiphy_params_flags { 1015 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1016 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1017 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1018 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1019 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1020 }; 1021 1022 /* 1023 * cfg80211_bitrate_mask - masks for bitrate control 1024 */ 1025 struct cfg80211_bitrate_mask { 1026 struct { 1027 u32 legacy; 1028 /* TODO: add support for masking MCS rates; e.g.: */ 1029 /* u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; */ 1030 } control[IEEE80211_NUM_BANDS]; 1031 }; 1032 /** 1033 * struct cfg80211_pmksa - PMK Security Association 1034 * 1035 * This structure is passed to the set/del_pmksa() method for PMKSA 1036 * caching. 1037 * 1038 * @bssid: The AP's BSSID. 1039 * @pmkid: The PMK material itself. 1040 */ 1041 struct cfg80211_pmksa { 1042 u8 *bssid; 1043 u8 *pmkid; 1044 }; 1045 1046 /** 1047 * struct cfg80211_ops - backend description for wireless configuration 1048 * 1049 * This struct is registered by fullmac card drivers and/or wireless stacks 1050 * in order to handle configuration requests on their interfaces. 1051 * 1052 * All callbacks except where otherwise noted should return 0 1053 * on success or a negative error code. 1054 * 1055 * All operations are currently invoked under rtnl for consistency with the 1056 * wireless extensions but this is subject to reevaluation as soon as this 1057 * code is used more widely and we have a first user without wext. 1058 * 1059 * @suspend: wiphy device needs to be suspended 1060 * @resume: wiphy device needs to be resumed 1061 * 1062 * @add_virtual_intf: create a new virtual interface with the given name, 1063 * must set the struct wireless_dev's iftype. Beware: You must create 1064 * the new netdev in the wiphy's network namespace! Returns the netdev, 1065 * or an ERR_PTR. 1066 * 1067 * @del_virtual_intf: remove the virtual interface determined by ifindex. 1068 * 1069 * @change_virtual_intf: change type/configuration of virtual interface, 1070 * keep the struct wireless_dev's iftype updated. 1071 * 1072 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 1073 * when adding a group key. 1074 * 1075 * @get_key: get information about the key with the given parameters. 1076 * @mac_addr will be %NULL when requesting information for a group 1077 * key. All pointers given to the @callback function need not be valid 1078 * after it returns. This function should return an error if it is 1079 * not possible to retrieve the key, -ENOENT if it doesn't exist. 1080 * 1081 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 1082 * and @key_index, return -ENOENT if the key doesn't exist. 1083 * 1084 * @set_default_key: set the default key on an interface 1085 * 1086 * @set_default_mgmt_key: set the default management frame key on an interface 1087 * 1088 * @add_beacon: Add a beacon with given parameters, @head, @interval 1089 * and @dtim_period will be valid, @tail is optional. 1090 * @set_beacon: Change the beacon parameters for an access point mode 1091 * interface. This should reject the call when no beacon has been 1092 * configured. 1093 * @del_beacon: Remove beacon configuration and stop sending the beacon. 1094 * 1095 * @add_station: Add a new station. 1096 * @del_station: Remove a station; @mac may be NULL to remove all stations. 1097 * @change_station: Modify a given station. 1098 * @get_station: get station information for the station identified by @mac 1099 * @dump_station: dump station callback -- resume dump at index @idx 1100 * 1101 * @add_mpath: add a fixed mesh path 1102 * @del_mpath: delete a given mesh path 1103 * @change_mpath: change a given mesh path 1104 * @get_mpath: get a mesh path for the given parameters 1105 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 1106 * @join_mesh: join the mesh network with the specified parameters 1107 * @leave_mesh: leave the current mesh network 1108 * 1109 * @get_mesh_config: Get the current mesh configuration 1110 * 1111 * @update_mesh_config: Update mesh parameters on a running mesh. 1112 * The mask is a bitfield which tells us which parameters to 1113 * set, and which to leave alone. 1114 * 1115 * @change_bss: Modify parameters for a given BSS. 1116 * 1117 * @set_txq_params: Set TX queue parameters 1118 * 1119 * @set_channel: Set channel for a given wireless interface. Some devices 1120 * may support multi-channel operation (by channel hopping) so cfg80211 1121 * doesn't verify much. Note, however, that the passed netdev may be 1122 * %NULL as well if the user requested changing the channel for the 1123 * device itself, or for a monitor interface. 1124 * 1125 * @scan: Request to do a scan. If returning zero, the scan request is given 1126 * the driver, and will be valid until passed to cfg80211_scan_done(). 1127 * For scan results, call cfg80211_inform_bss(); you can call this outside 1128 * the scan/scan_done bracket too. 1129 * 1130 * @auth: Request to authenticate with the specified peer 1131 * @assoc: Request to (re)associate with the specified peer 1132 * @deauth: Request to deauthenticate from the specified peer 1133 * @disassoc: Request to disassociate from the specified peer 1134 * 1135 * @connect: Connect to the ESS with the specified parameters. When connected, 1136 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 1137 * If the connection fails for some reason, call cfg80211_connect_result() 1138 * with the status from the AP. 1139 * @disconnect: Disconnect from the BSS/ESS. 1140 * 1141 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 1142 * cfg80211_ibss_joined(), also call that function when changing BSSID due 1143 * to a merge. 1144 * @leave_ibss: Leave the IBSS. 1145 * 1146 * @set_wiphy_params: Notify that wiphy parameters have changed; 1147 * @changed bitfield (see &enum wiphy_params_flags) describes which values 1148 * have changed. The actual parameter values are available in 1149 * struct wiphy. If returning an error, no value should be changed. 1150 * 1151 * @set_tx_power: set the transmit power according to the parameters 1152 * @get_tx_power: store the current TX power into the dbm variable; 1153 * return 0 if successful 1154 * 1155 * @set_wds_peer: set the WDS peer for a WDS interface 1156 * 1157 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 1158 * functions to adjust rfkill hw state 1159 * 1160 * @dump_survey: get site survey information. 1161 * 1162 * @remain_on_channel: Request the driver to remain awake on the specified 1163 * channel for the specified duration to complete an off-channel 1164 * operation (e.g., public action frame exchange). When the driver is 1165 * ready on the requested channel, it must indicate this with an event 1166 * notification by calling cfg80211_ready_on_channel(). 1167 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 1168 * This allows the operation to be terminated prior to timeout based on 1169 * the duration value. 1170 * @mgmt_tx: Transmit a management frame. 1171 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 1172 * frame on another channel 1173 * 1174 * @testmode_cmd: run a test mode command 1175 * 1176 * @set_bitrate_mask: set the bitrate mask configuration 1177 * 1178 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 1179 * devices running firmwares capable of generating the (re) association 1180 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 1181 * @del_pmksa: Delete a cached PMKID. 1182 * @flush_pmksa: Flush all cached PMKIDs. 1183 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 1184 * allows the driver to adjust the dynamic ps timeout value. 1185 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 1186 * 1187 * @mgmt_frame_register: Notify driver that a management frame type was 1188 * registered. Note that this callback may not sleep, and cannot run 1189 * concurrently with itself. 1190 * 1191 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 1192 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 1193 * reject TX/RX mask combinations they cannot support by returning -EINVAL 1194 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 1195 * 1196 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 1197 */ 1198 struct cfg80211_ops { 1199 int (*suspend)(struct wiphy *wiphy); 1200 int (*resume)(struct wiphy *wiphy); 1201 1202 struct net_device * (*add_virtual_intf)(struct wiphy *wiphy, 1203 char *name, 1204 enum nl80211_iftype type, 1205 u32 *flags, 1206 struct vif_params *params); 1207 int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev); 1208 int (*change_virtual_intf)(struct wiphy *wiphy, 1209 struct net_device *dev, 1210 enum nl80211_iftype type, u32 *flags, 1211 struct vif_params *params); 1212 1213 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 1214 u8 key_index, bool pairwise, const u8 *mac_addr, 1215 struct key_params *params); 1216 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 1217 u8 key_index, bool pairwise, const u8 *mac_addr, 1218 void *cookie, 1219 void (*callback)(void *cookie, struct key_params*)); 1220 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 1221 u8 key_index, bool pairwise, const u8 *mac_addr); 1222 int (*set_default_key)(struct wiphy *wiphy, 1223 struct net_device *netdev, 1224 u8 key_index, bool unicast, bool multicast); 1225 int (*set_default_mgmt_key)(struct wiphy *wiphy, 1226 struct net_device *netdev, 1227 u8 key_index); 1228 1229 int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, 1230 struct beacon_parameters *info); 1231 int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, 1232 struct beacon_parameters *info); 1233 int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); 1234 1235 1236 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 1237 u8 *mac, struct station_parameters *params); 1238 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 1239 u8 *mac); 1240 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 1241 u8 *mac, struct station_parameters *params); 1242 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 1243 u8 *mac, struct station_info *sinfo); 1244 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 1245 int idx, u8 *mac, struct station_info *sinfo); 1246 1247 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 1248 u8 *dst, u8 *next_hop); 1249 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 1250 u8 *dst); 1251 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 1252 u8 *dst, u8 *next_hop); 1253 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 1254 u8 *dst, u8 *next_hop, 1255 struct mpath_info *pinfo); 1256 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 1257 int idx, u8 *dst, u8 *next_hop, 1258 struct mpath_info *pinfo); 1259 int (*get_mesh_config)(struct wiphy *wiphy, 1260 struct net_device *dev, 1261 struct mesh_config *conf); 1262 int (*update_mesh_config)(struct wiphy *wiphy, 1263 struct net_device *dev, u32 mask, 1264 const struct mesh_config *nconf); 1265 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 1266 const struct mesh_config *conf, 1267 const struct mesh_setup *setup); 1268 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 1269 1270 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 1271 struct bss_parameters *params); 1272 1273 int (*set_txq_params)(struct wiphy *wiphy, 1274 struct ieee80211_txq_params *params); 1275 1276 int (*set_channel)(struct wiphy *wiphy, struct net_device *dev, 1277 struct ieee80211_channel *chan, 1278 enum nl80211_channel_type channel_type); 1279 1280 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 1281 struct cfg80211_scan_request *request); 1282 1283 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 1284 struct cfg80211_auth_request *req); 1285 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 1286 struct cfg80211_assoc_request *req); 1287 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 1288 struct cfg80211_deauth_request *req, 1289 void *cookie); 1290 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 1291 struct cfg80211_disassoc_request *req, 1292 void *cookie); 1293 1294 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 1295 struct cfg80211_connect_params *sme); 1296 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 1297 u16 reason_code); 1298 1299 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 1300 struct cfg80211_ibss_params *params); 1301 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 1302 1303 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 1304 1305 int (*set_tx_power)(struct wiphy *wiphy, 1306 enum nl80211_tx_power_setting type, int mbm); 1307 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 1308 1309 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 1310 const u8 *addr); 1311 1312 void (*rfkill_poll)(struct wiphy *wiphy); 1313 1314 #ifdef CONFIG_NL80211_TESTMODE 1315 int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len); 1316 #endif 1317 1318 int (*set_bitrate_mask)(struct wiphy *wiphy, 1319 struct net_device *dev, 1320 const u8 *peer, 1321 const struct cfg80211_bitrate_mask *mask); 1322 1323 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 1324 int idx, struct survey_info *info); 1325 1326 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1327 struct cfg80211_pmksa *pmksa); 1328 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1329 struct cfg80211_pmksa *pmksa); 1330 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 1331 1332 int (*remain_on_channel)(struct wiphy *wiphy, 1333 struct net_device *dev, 1334 struct ieee80211_channel *chan, 1335 enum nl80211_channel_type channel_type, 1336 unsigned int duration, 1337 u64 *cookie); 1338 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 1339 struct net_device *dev, 1340 u64 cookie); 1341 1342 int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, 1343 struct ieee80211_channel *chan, bool offchan, 1344 enum nl80211_channel_type channel_type, 1345 bool channel_type_valid, unsigned int wait, 1346 const u8 *buf, size_t len, u64 *cookie); 1347 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 1348 struct net_device *dev, 1349 u64 cookie); 1350 1351 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1352 bool enabled, int timeout); 1353 1354 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 1355 struct net_device *dev, 1356 s32 rssi_thold, u32 rssi_hyst); 1357 1358 void (*mgmt_frame_register)(struct wiphy *wiphy, 1359 struct net_device *dev, 1360 u16 frame_type, bool reg); 1361 1362 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 1363 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 1364 }; 1365 1366 /* 1367 * wireless hardware and networking interfaces structures 1368 * and registration/helper functions 1369 */ 1370 1371 /** 1372 * enum wiphy_flags - wiphy capability flags 1373 * 1374 * @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device 1375 * has its own custom regulatory domain and cannot identify the 1376 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 1377 * we will disregard the first regulatory hint (when the 1378 * initiator is %REGDOM_SET_BY_CORE). 1379 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will 1380 * ignore regulatory domain settings until it gets its own regulatory 1381 * domain via its regulatory_hint() unless the regulatory hint is 1382 * from a country IE. After its gets its own regulatory domain it will 1383 * only allow further regulatory domain settings to further enhance 1384 * compliance. For example if channel 13 and 14 are disabled by this 1385 * regulatory domain no user regulatory domain can enable these channels 1386 * at a later time. This can be used for devices which do not have 1387 * calibration information guaranteed for frequencies or settings 1388 * outside of its regulatory domain. 1389 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure 1390 * that passive scan flags and beaconing flags may not be lifted by 1391 * cfg80211 due to regulatory beacon hints. For more information on beacon 1392 * hints read the documenation for regulatory_hint_found_beacon() 1393 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 1394 * wiphy at all 1395 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 1396 * by default -- this flag will be set depending on the kernel's default 1397 * on wiphy_new(), but can be changed by the driver if it has a good 1398 * reason to override the default 1399 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 1400 * on a VLAN interface) 1401 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 1402 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 1403 * control port protocol ethertype. The device also honours the 1404 * control_port_no_encrypt flag. 1405 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 1406 * @WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS: The device supports separate 1407 * unicast and multicast TX keys. 1408 */ 1409 enum wiphy_flags { 1410 WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), 1411 WIPHY_FLAG_STRICT_REGULATORY = BIT(1), 1412 WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), 1413 WIPHY_FLAG_NETNS_OK = BIT(3), 1414 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 1415 WIPHY_FLAG_4ADDR_AP = BIT(5), 1416 WIPHY_FLAG_4ADDR_STATION = BIT(6), 1417 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 1418 WIPHY_FLAG_IBSS_RSN = BIT(8), 1419 WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS= BIT(9), 1420 }; 1421 1422 struct mac_address { 1423 u8 addr[ETH_ALEN]; 1424 }; 1425 1426 struct ieee80211_txrx_stypes { 1427 u16 tx, rx; 1428 }; 1429 1430 /** 1431 * struct wiphy - wireless hardware description 1432 * @reg_notifier: the driver's regulatory notification callback, 1433 * note that if your driver uses wiphy_apply_custom_regulatory() 1434 * the reg_notifier's request can be passed as NULL 1435 * @regd: the driver's regulatory domain, if one was requested via 1436 * the regulatory_hint() API. This can be used by the driver 1437 * on the reg_notifier() if it chooses to ignore future 1438 * regulatory domain changes caused by other drivers. 1439 * @signal_type: signal type reported in &struct cfg80211_bss. 1440 * @cipher_suites: supported cipher suites 1441 * @n_cipher_suites: number of supported cipher suites 1442 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 1443 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 1444 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 1445 * -1 = fragmentation disabled, only odd values >= 256 used 1446 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 1447 * @_net: the network namespace this wiphy currently lives in 1448 * @perm_addr: permanent MAC address of this device 1449 * @addr_mask: If the device supports multiple MAC addresses by masking, 1450 * set this to a mask with variable bits set to 1, e.g. if the last 1451 * four bits are variable then set it to 00:...:00:0f. The actual 1452 * variable bits shall be determined by the interfaces added, with 1453 * interfaces not matching the mask being rejected to be brought up. 1454 * @n_addresses: number of addresses in @addresses. 1455 * @addresses: If the device has more than one address, set this pointer 1456 * to a list of addresses (6 bytes each). The first one will be used 1457 * by default for perm_addr. In this case, the mask should be set to 1458 * all-zeroes. In this case it is assumed that the device can handle 1459 * the same number of arbitrary MAC addresses. 1460 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 1461 * automatically on wiphy renames 1462 * @dev: (virtual) struct device for this wiphy 1463 * @wext: wireless extension handlers 1464 * @priv: driver private data (sized according to wiphy_new() parameter) 1465 * @interface_modes: bitmask of interfaces types valid for this wiphy, 1466 * must be set by driver 1467 * @flags: wiphy flags, see &enum wiphy_flags 1468 * @bss_priv_size: each BSS struct has private data allocated with it, 1469 * this variable determines its size 1470 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 1471 * any given scan 1472 * @max_scan_ie_len: maximum length of user-controlled IEs device can 1473 * add to probe request frames transmitted during a scan, must not 1474 * include fixed IEs like supported rates 1475 * @coverage_class: current coverage class 1476 * @fw_version: firmware version for ethtool reporting 1477 * @hw_version: hardware version for ethtool reporting 1478 * @max_num_pmkids: maximum number of PMKIDs supported by device 1479 * @privid: a pointer that drivers can use to identify if an arbitrary 1480 * wiphy is theirs, e.g. in global notifiers 1481 * @bands: information about bands/channels supported by this device 1482 * 1483 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 1484 * transmitted through nl80211, points to an array indexed by interface 1485 * type 1486 * 1487 * @available_antennas_tx: bitmap of antennas which are available to be 1488 * configured as TX antennas. Antenna configuration commands will be 1489 * rejected unless this or @available_antennas_rx is set. 1490 * 1491 * @available_antennas_rx: bitmap of antennas which are available to be 1492 * configured as RX antennas. Antenna configuration commands will be 1493 * rejected unless this or @available_antennas_tx is set. 1494 * 1495 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 1496 * may request, if implemented. 1497 */ 1498 struct wiphy { 1499 /* assign these fields before you register the wiphy */ 1500 1501 /* permanent MAC address(es) */ 1502 u8 perm_addr[ETH_ALEN]; 1503 u8 addr_mask[ETH_ALEN]; 1504 1505 struct mac_address *addresses; 1506 1507 const struct ieee80211_txrx_stypes *mgmt_stypes; 1508 1509 u16 n_addresses; 1510 1511 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 1512 u16 interface_modes; 1513 1514 u32 flags; 1515 1516 enum cfg80211_signal_type signal_type; 1517 1518 int bss_priv_size; 1519 u8 max_scan_ssids; 1520 u16 max_scan_ie_len; 1521 1522 int n_cipher_suites; 1523 const u32 *cipher_suites; 1524 1525 u8 retry_short; 1526 u8 retry_long; 1527 u32 frag_threshold; 1528 u32 rts_threshold; 1529 u8 coverage_class; 1530 1531 char fw_version[ETHTOOL_BUSINFO_LEN]; 1532 u32 hw_version; 1533 1534 u16 max_remain_on_channel_duration; 1535 1536 u8 max_num_pmkids; 1537 1538 u32 available_antennas_tx; 1539 u32 available_antennas_rx; 1540 1541 /* If multiple wiphys are registered and you're handed e.g. 1542 * a regular netdev with assigned ieee80211_ptr, you won't 1543 * know whether it points to a wiphy your driver has registered 1544 * or not. Assign this to something global to your driver to 1545 * help determine whether you own this wiphy or not. */ 1546 const void *privid; 1547 1548 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 1549 1550 /* Lets us get back the wiphy on the callback */ 1551 int (*reg_notifier)(struct wiphy *wiphy, 1552 struct regulatory_request *request); 1553 1554 /* fields below are read-only, assigned by cfg80211 */ 1555 1556 const struct ieee80211_regdomain *regd; 1557 1558 /* the item in /sys/class/ieee80211/ points to this, 1559 * you need use set_wiphy_dev() (see below) */ 1560 struct device dev; 1561 1562 /* dir in debugfs: ieee80211/<wiphyname> */ 1563 struct dentry *debugfsdir; 1564 1565 #ifdef CONFIG_NET_NS 1566 /* the network namespace this phy lives in currently */ 1567 struct net *_net; 1568 #endif 1569 1570 #ifdef CONFIG_CFG80211_WEXT 1571 const struct iw_handler_def *wext; 1572 #endif 1573 1574 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 1575 }; 1576 1577 static inline struct net *wiphy_net(struct wiphy *wiphy) 1578 { 1579 return read_pnet(&wiphy->_net); 1580 } 1581 1582 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 1583 { 1584 write_pnet(&wiphy->_net, net); 1585 } 1586 1587 /** 1588 * wiphy_priv - return priv from wiphy 1589 * 1590 * @wiphy: the wiphy whose priv pointer to return 1591 */ 1592 static inline void *wiphy_priv(struct wiphy *wiphy) 1593 { 1594 BUG_ON(!wiphy); 1595 return &wiphy->priv; 1596 } 1597 1598 /** 1599 * priv_to_wiphy - return the wiphy containing the priv 1600 * 1601 * @priv: a pointer previously returned by wiphy_priv 1602 */ 1603 static inline struct wiphy *priv_to_wiphy(void *priv) 1604 { 1605 BUG_ON(!priv); 1606 return container_of(priv, struct wiphy, priv); 1607 } 1608 1609 /** 1610 * set_wiphy_dev - set device pointer for wiphy 1611 * 1612 * @wiphy: The wiphy whose device to bind 1613 * @dev: The device to parent it to 1614 */ 1615 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 1616 { 1617 wiphy->dev.parent = dev; 1618 } 1619 1620 /** 1621 * wiphy_dev - get wiphy dev pointer 1622 * 1623 * @wiphy: The wiphy whose device struct to look up 1624 */ 1625 static inline struct device *wiphy_dev(struct wiphy *wiphy) 1626 { 1627 return wiphy->dev.parent; 1628 } 1629 1630 /** 1631 * wiphy_name - get wiphy name 1632 * 1633 * @wiphy: The wiphy whose name to return 1634 */ 1635 static inline const char *wiphy_name(const struct wiphy *wiphy) 1636 { 1637 return dev_name(&wiphy->dev); 1638 } 1639 1640 /** 1641 * wiphy_new - create a new wiphy for use with cfg80211 1642 * 1643 * @ops: The configuration operations for this device 1644 * @sizeof_priv: The size of the private area to allocate 1645 * 1646 * Create a new wiphy and associate the given operations with it. 1647 * @sizeof_priv bytes are allocated for private use. 1648 * 1649 * The returned pointer must be assigned to each netdev's 1650 * ieee80211_ptr for proper operation. 1651 */ 1652 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 1653 1654 /** 1655 * wiphy_register - register a wiphy with cfg80211 1656 * 1657 * @wiphy: The wiphy to register. 1658 * 1659 * Returns a non-negative wiphy index or a negative error code. 1660 */ 1661 extern int wiphy_register(struct wiphy *wiphy); 1662 1663 /** 1664 * wiphy_unregister - deregister a wiphy from cfg80211 1665 * 1666 * @wiphy: The wiphy to unregister. 1667 * 1668 * After this call, no more requests can be made with this priv 1669 * pointer, but the call may sleep to wait for an outstanding 1670 * request that is being handled. 1671 */ 1672 extern void wiphy_unregister(struct wiphy *wiphy); 1673 1674 /** 1675 * wiphy_free - free wiphy 1676 * 1677 * @wiphy: The wiphy to free 1678 */ 1679 extern void wiphy_free(struct wiphy *wiphy); 1680 1681 /* internal structs */ 1682 struct cfg80211_conn; 1683 struct cfg80211_internal_bss; 1684 struct cfg80211_cached_keys; 1685 1686 #define MAX_AUTH_BSSES 4 1687 1688 /** 1689 * struct wireless_dev - wireless per-netdev state 1690 * 1691 * This structure must be allocated by the driver/stack 1692 * that uses the ieee80211_ptr field in struct net_device 1693 * (this is intentional so it can be allocated along with 1694 * the netdev.) 1695 * 1696 * @wiphy: pointer to hardware description 1697 * @iftype: interface type 1698 * @list: (private) Used to collect the interfaces 1699 * @netdev: (private) Used to reference back to the netdev 1700 * @current_bss: (private) Used by the internal configuration code 1701 * @channel: (private) Used by the internal configuration code to track 1702 * user-set AP, monitor and WDS channels for wireless extensions 1703 * @bssid: (private) Used by the internal configuration code 1704 * @ssid: (private) Used by the internal configuration code 1705 * @ssid_len: (private) Used by the internal configuration code 1706 * @mesh_id_len: (private) Used by the internal configuration code 1707 * @mesh_id_up_len: (private) Used by the internal configuration code 1708 * @wext: (private) Used by the internal wireless extensions compat code 1709 * @use_4addr: indicates 4addr mode is used on this interface, must be 1710 * set by driver (if supported) on add_interface BEFORE registering the 1711 * netdev and may otherwise be used by driver read-only, will be update 1712 * by cfg80211 on change_interface 1713 * @mgmt_registrations: list of registrations for management frames 1714 * @mgmt_registrations_lock: lock for the list 1715 * @mtx: mutex used to lock data in this struct 1716 * @cleanup_work: work struct used for cleanup that can't be done directly 1717 */ 1718 struct wireless_dev { 1719 struct wiphy *wiphy; 1720 enum nl80211_iftype iftype; 1721 1722 /* the remainder of this struct should be private to cfg80211 */ 1723 struct list_head list; 1724 struct net_device *netdev; 1725 1726 struct list_head mgmt_registrations; 1727 spinlock_t mgmt_registrations_lock; 1728 1729 struct mutex mtx; 1730 1731 struct work_struct cleanup_work; 1732 1733 bool use_4addr; 1734 1735 /* currently used for IBSS and SME - might be rearranged later */ 1736 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1737 u8 ssid_len, mesh_id_len, mesh_id_up_len; 1738 enum { 1739 CFG80211_SME_IDLE, 1740 CFG80211_SME_CONNECTING, 1741 CFG80211_SME_CONNECTED, 1742 } sme_state; 1743 struct cfg80211_conn *conn; 1744 struct cfg80211_cached_keys *connect_keys; 1745 1746 struct list_head event_list; 1747 spinlock_t event_lock; 1748 1749 struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES]; 1750 struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES]; 1751 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 1752 struct ieee80211_channel *channel; 1753 1754 bool ps; 1755 int ps_timeout; 1756 1757 #ifdef CONFIG_CFG80211_WEXT 1758 /* wext data */ 1759 struct { 1760 struct cfg80211_ibss_params ibss; 1761 struct cfg80211_connect_params connect; 1762 struct cfg80211_cached_keys *keys; 1763 u8 *ie; 1764 size_t ie_len; 1765 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 1766 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1767 s8 default_key, default_mgmt_key; 1768 bool prev_bssid_valid; 1769 } wext; 1770 #endif 1771 }; 1772 1773 /** 1774 * wdev_priv - return wiphy priv from wireless_dev 1775 * 1776 * @wdev: The wireless device whose wiphy's priv pointer to return 1777 */ 1778 static inline void *wdev_priv(struct wireless_dev *wdev) 1779 { 1780 BUG_ON(!wdev); 1781 return wiphy_priv(wdev->wiphy); 1782 } 1783 1784 /** 1785 * DOC: Utility functions 1786 * 1787 * cfg80211 offers a number of utility functions that can be useful. 1788 */ 1789 1790 /** 1791 * ieee80211_channel_to_frequency - convert channel number to frequency 1792 * @chan: channel number 1793 */ 1794 extern int ieee80211_channel_to_frequency(int chan); 1795 1796 /** 1797 * ieee80211_frequency_to_channel - convert frequency to channel number 1798 * @freq: center frequency 1799 */ 1800 extern int ieee80211_frequency_to_channel(int freq); 1801 1802 /* 1803 * Name indirection necessary because the ieee80211 code also has 1804 * a function named "ieee80211_get_channel", so if you include 1805 * cfg80211's header file you get cfg80211's version, if you try 1806 * to include both header files you'll (rightfully!) get a symbol 1807 * clash. 1808 */ 1809 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 1810 int freq); 1811 /** 1812 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 1813 * @wiphy: the struct wiphy to get the channel for 1814 * @freq: the center frequency of the channel 1815 */ 1816 static inline struct ieee80211_channel * 1817 ieee80211_get_channel(struct wiphy *wiphy, int freq) 1818 { 1819 return __ieee80211_get_channel(wiphy, freq); 1820 } 1821 1822 /** 1823 * ieee80211_get_response_rate - get basic rate for a given rate 1824 * 1825 * @sband: the band to look for rates in 1826 * @basic_rates: bitmap of basic rates 1827 * @bitrate: the bitrate for which to find the basic rate 1828 * 1829 * This function returns the basic rate corresponding to a given 1830 * bitrate, that is the next lower bitrate contained in the basic 1831 * rate map, which is, for this function, given as a bitmap of 1832 * indices of rates in the band's bitrate table. 1833 */ 1834 struct ieee80211_rate * 1835 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 1836 u32 basic_rates, int bitrate); 1837 1838 /* 1839 * Radiotap parsing functions -- for controlled injection support 1840 * 1841 * Implemented in net/wireless/radiotap.c 1842 * Documentation in Documentation/networking/radiotap-headers.txt 1843 */ 1844 1845 struct radiotap_align_size { 1846 uint8_t align:4, size:4; 1847 }; 1848 1849 struct ieee80211_radiotap_namespace { 1850 const struct radiotap_align_size *align_size; 1851 int n_bits; 1852 uint32_t oui; 1853 uint8_t subns; 1854 }; 1855 1856 struct ieee80211_radiotap_vendor_namespaces { 1857 const struct ieee80211_radiotap_namespace *ns; 1858 int n_ns; 1859 }; 1860 1861 /** 1862 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 1863 * @this_arg_index: index of current arg, valid after each successful call 1864 * to ieee80211_radiotap_iterator_next() 1865 * @this_arg: pointer to current radiotap arg; it is valid after each 1866 * call to ieee80211_radiotap_iterator_next() but also after 1867 * ieee80211_radiotap_iterator_init() where it will point to 1868 * the beginning of the actual data portion 1869 * @this_arg_size: length of the current arg, for convenience 1870 * @current_namespace: pointer to the current namespace definition 1871 * (or internally %NULL if the current namespace is unknown) 1872 * @is_radiotap_ns: indicates whether the current namespace is the default 1873 * radiotap namespace or not 1874 * 1875 * @_rtheader: pointer to the radiotap header we are walking through 1876 * @_max_length: length of radiotap header in cpu byte ordering 1877 * @_arg_index: next argument index 1878 * @_arg: next argument pointer 1879 * @_next_bitmap: internal pointer to next present u32 1880 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 1881 * @_vns: vendor namespace definitions 1882 * @_next_ns_data: beginning of the next namespace's data 1883 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 1884 * next bitmap word 1885 * 1886 * Describes the radiotap parser state. Fields prefixed with an underscore 1887 * must not be used by users of the parser, only by the parser internally. 1888 */ 1889 1890 struct ieee80211_radiotap_iterator { 1891 struct ieee80211_radiotap_header *_rtheader; 1892 const struct ieee80211_radiotap_vendor_namespaces *_vns; 1893 const struct ieee80211_radiotap_namespace *current_namespace; 1894 1895 unsigned char *_arg, *_next_ns_data; 1896 __le32 *_next_bitmap; 1897 1898 unsigned char *this_arg; 1899 int this_arg_index; 1900 int this_arg_size; 1901 1902 int is_radiotap_ns; 1903 1904 int _max_length; 1905 int _arg_index; 1906 uint32_t _bitmap_shifter; 1907 int _reset_on_ext; 1908 }; 1909 1910 extern int ieee80211_radiotap_iterator_init( 1911 struct ieee80211_radiotap_iterator *iterator, 1912 struct ieee80211_radiotap_header *radiotap_header, 1913 int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); 1914 1915 extern int ieee80211_radiotap_iterator_next( 1916 struct ieee80211_radiotap_iterator *iterator); 1917 1918 1919 extern const unsigned char rfc1042_header[6]; 1920 extern const unsigned char bridge_tunnel_header[6]; 1921 1922 /** 1923 * ieee80211_get_hdrlen_from_skb - get header length from data 1924 * 1925 * Given an skb with a raw 802.11 header at the data pointer this function 1926 * returns the 802.11 header length in bytes (not including encryption 1927 * headers). If the data in the sk_buff is too short to contain a valid 802.11 1928 * header the function returns 0. 1929 * 1930 * @skb: the frame 1931 */ 1932 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 1933 1934 /** 1935 * ieee80211_hdrlen - get header length in bytes from frame control 1936 * @fc: frame control field in little-endian format 1937 */ 1938 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 1939 1940 /** 1941 * DOC: Data path helpers 1942 * 1943 * In addition to generic utilities, cfg80211 also offers 1944 * functions that help implement the data path for devices 1945 * that do not do the 802.11/802.3 conversion on the device. 1946 */ 1947 1948 /** 1949 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 1950 * @skb: the 802.11 data frame 1951 * @addr: the device MAC address 1952 * @iftype: the virtual interface type 1953 */ 1954 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 1955 enum nl80211_iftype iftype); 1956 1957 /** 1958 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 1959 * @skb: the 802.3 frame 1960 * @addr: the device MAC address 1961 * @iftype: the virtual interface type 1962 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 1963 * @qos: build 802.11 QoS data frame 1964 */ 1965 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 1966 enum nl80211_iftype iftype, u8 *bssid, bool qos); 1967 1968 /** 1969 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 1970 * 1971 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 1972 * 802.3 frames. The @list will be empty if the decode fails. The 1973 * @skb is consumed after the function returns. 1974 * 1975 * @skb: The input IEEE 802.11n A-MSDU frame. 1976 * @list: The output list of 802.3 frames. It must be allocated and 1977 * initialized by by the caller. 1978 * @addr: The device MAC address. 1979 * @iftype: The device interface type. 1980 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 1981 */ 1982 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 1983 const u8 *addr, enum nl80211_iftype iftype, 1984 const unsigned int extra_headroom); 1985 1986 /** 1987 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 1988 * @skb: the data frame 1989 */ 1990 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 1991 1992 /** 1993 * cfg80211_find_ie - find information element in data 1994 * 1995 * @eid: element ID 1996 * @ies: data consisting of IEs 1997 * @len: length of data 1998 * 1999 * This function will return %NULL if the element ID could 2000 * not be found or if the element is invalid (claims to be 2001 * longer than the given data), or a pointer to the first byte 2002 * of the requested element, that is the byte containing the 2003 * element ID. There are no checks on the element length 2004 * other than having to fit into the given data. 2005 */ 2006 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 2007 2008 /** 2009 * DOC: Regulatory enforcement infrastructure 2010 * 2011 * TODO 2012 */ 2013 2014 /** 2015 * regulatory_hint - driver hint to the wireless core a regulatory domain 2016 * @wiphy: the wireless device giving the hint (used only for reporting 2017 * conflicts) 2018 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 2019 * should be in. If @rd is set this should be NULL. Note that if you 2020 * set this to NULL you should still set rd->alpha2 to some accepted 2021 * alpha2. 2022 * 2023 * Wireless drivers can use this function to hint to the wireless core 2024 * what it believes should be the current regulatory domain by 2025 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 2026 * domain should be in or by providing a completely build regulatory domain. 2027 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 2028 * for a regulatory domain structure for the respective country. 2029 * 2030 * The wiphy must have been registered to cfg80211 prior to this call. 2031 * For cfg80211 drivers this means you must first use wiphy_register(), 2032 * for mac80211 drivers you must first use ieee80211_register_hw(). 2033 * 2034 * Drivers should check the return value, its possible you can get 2035 * an -ENOMEM. 2036 */ 2037 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 2038 2039 /** 2040 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 2041 * @wiphy: the wireless device we want to process the regulatory domain on 2042 * @regd: the custom regulatory domain to use for this wiphy 2043 * 2044 * Drivers can sometimes have custom regulatory domains which do not apply 2045 * to a specific country. Drivers can use this to apply such custom regulatory 2046 * domains. This routine must be called prior to wiphy registration. The 2047 * custom regulatory domain will be trusted completely and as such previous 2048 * default channel settings will be disregarded. If no rule is found for a 2049 * channel on the regulatory domain the channel will be disabled. 2050 */ 2051 extern void wiphy_apply_custom_regulatory( 2052 struct wiphy *wiphy, 2053 const struct ieee80211_regdomain *regd); 2054 2055 /** 2056 * freq_reg_info - get regulatory information for the given frequency 2057 * @wiphy: the wiphy for which we want to process this rule for 2058 * @center_freq: Frequency in KHz for which we want regulatory information for 2059 * @desired_bw_khz: the desired max bandwidth you want to use per 2060 * channel. Note that this is still 20 MHz if you want to use HT40 2061 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 2062 * If set to 0 we'll assume you want the standard 20 MHz. 2063 * @reg_rule: the regulatory rule which we have for this frequency 2064 * 2065 * Use this function to get the regulatory rule for a specific frequency on 2066 * a given wireless device. If the device has a specific regulatory domain 2067 * it wants to follow we respect that unless a country IE has been received 2068 * and processed already. 2069 * 2070 * Returns 0 if it was able to find a valid regulatory rule which does 2071 * apply to the given center_freq otherwise it returns non-zero. It will 2072 * also return -ERANGE if we determine the given center_freq does not even have 2073 * a regulatory rule for a frequency range in the center_freq's band. See 2074 * freq_in_rule_band() for our current definition of a band -- this is purely 2075 * subjective and right now its 802.11 specific. 2076 */ 2077 extern int freq_reg_info(struct wiphy *wiphy, 2078 u32 center_freq, 2079 u32 desired_bw_khz, 2080 const struct ieee80211_reg_rule **reg_rule); 2081 2082 /* 2083 * Temporary wext handlers & helper functions 2084 * 2085 * In the future cfg80211 will simply assign the entire wext handler 2086 * structure to netdevs it manages, but we're not there yet. 2087 */ 2088 int cfg80211_wext_giwname(struct net_device *dev, 2089 struct iw_request_info *info, 2090 char *name, char *extra); 2091 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 2092 u32 *mode, char *extra); 2093 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 2094 u32 *mode, char *extra); 2095 int cfg80211_wext_siwscan(struct net_device *dev, 2096 struct iw_request_info *info, 2097 union iwreq_data *wrqu, char *extra); 2098 int cfg80211_wext_giwscan(struct net_device *dev, 2099 struct iw_request_info *info, 2100 struct iw_point *data, char *extra); 2101 int cfg80211_wext_siwmlme(struct net_device *dev, 2102 struct iw_request_info *info, 2103 struct iw_point *data, char *extra); 2104 int cfg80211_wext_giwrange(struct net_device *dev, 2105 struct iw_request_info *info, 2106 struct iw_point *data, char *extra); 2107 int cfg80211_wext_siwgenie(struct net_device *dev, 2108 struct iw_request_info *info, 2109 struct iw_point *data, char *extra); 2110 int cfg80211_wext_siwauth(struct net_device *dev, 2111 struct iw_request_info *info, 2112 struct iw_param *data, char *extra); 2113 int cfg80211_wext_giwauth(struct net_device *dev, 2114 struct iw_request_info *info, 2115 struct iw_param *data, char *extra); 2116 2117 int cfg80211_wext_siwfreq(struct net_device *dev, 2118 struct iw_request_info *info, 2119 struct iw_freq *freq, char *extra); 2120 int cfg80211_wext_giwfreq(struct net_device *dev, 2121 struct iw_request_info *info, 2122 struct iw_freq *freq, char *extra); 2123 int cfg80211_wext_siwessid(struct net_device *dev, 2124 struct iw_request_info *info, 2125 struct iw_point *data, char *ssid); 2126 int cfg80211_wext_giwessid(struct net_device *dev, 2127 struct iw_request_info *info, 2128 struct iw_point *data, char *ssid); 2129 int cfg80211_wext_siwrate(struct net_device *dev, 2130 struct iw_request_info *info, 2131 struct iw_param *rate, char *extra); 2132 int cfg80211_wext_giwrate(struct net_device *dev, 2133 struct iw_request_info *info, 2134 struct iw_param *rate, char *extra); 2135 2136 int cfg80211_wext_siwrts(struct net_device *dev, 2137 struct iw_request_info *info, 2138 struct iw_param *rts, char *extra); 2139 int cfg80211_wext_giwrts(struct net_device *dev, 2140 struct iw_request_info *info, 2141 struct iw_param *rts, char *extra); 2142 int cfg80211_wext_siwfrag(struct net_device *dev, 2143 struct iw_request_info *info, 2144 struct iw_param *frag, char *extra); 2145 int cfg80211_wext_giwfrag(struct net_device *dev, 2146 struct iw_request_info *info, 2147 struct iw_param *frag, char *extra); 2148 int cfg80211_wext_siwretry(struct net_device *dev, 2149 struct iw_request_info *info, 2150 struct iw_param *retry, char *extra); 2151 int cfg80211_wext_giwretry(struct net_device *dev, 2152 struct iw_request_info *info, 2153 struct iw_param *retry, char *extra); 2154 int cfg80211_wext_siwencodeext(struct net_device *dev, 2155 struct iw_request_info *info, 2156 struct iw_point *erq, char *extra); 2157 int cfg80211_wext_siwencode(struct net_device *dev, 2158 struct iw_request_info *info, 2159 struct iw_point *erq, char *keybuf); 2160 int cfg80211_wext_giwencode(struct net_device *dev, 2161 struct iw_request_info *info, 2162 struct iw_point *erq, char *keybuf); 2163 int cfg80211_wext_siwtxpower(struct net_device *dev, 2164 struct iw_request_info *info, 2165 union iwreq_data *data, char *keybuf); 2166 int cfg80211_wext_giwtxpower(struct net_device *dev, 2167 struct iw_request_info *info, 2168 union iwreq_data *data, char *keybuf); 2169 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev); 2170 2171 int cfg80211_wext_siwpower(struct net_device *dev, 2172 struct iw_request_info *info, 2173 struct iw_param *wrq, char *extra); 2174 int cfg80211_wext_giwpower(struct net_device *dev, 2175 struct iw_request_info *info, 2176 struct iw_param *wrq, char *extra); 2177 2178 int cfg80211_wext_siwap(struct net_device *dev, 2179 struct iw_request_info *info, 2180 struct sockaddr *ap_addr, char *extra); 2181 int cfg80211_wext_giwap(struct net_device *dev, 2182 struct iw_request_info *info, 2183 struct sockaddr *ap_addr, char *extra); 2184 2185 int cfg80211_wext_siwpmksa(struct net_device *dev, 2186 struct iw_request_info *info, 2187 struct iw_point *data, char *extra); 2188 2189 /* 2190 * callbacks for asynchronous cfg80211 methods, notification 2191 * functions and BSS handling helpers 2192 */ 2193 2194 /** 2195 * cfg80211_scan_done - notify that scan finished 2196 * 2197 * @request: the corresponding scan request 2198 * @aborted: set to true if the scan was aborted for any reason, 2199 * userspace will be notified of that 2200 */ 2201 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 2202 2203 /** 2204 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame 2205 * 2206 * @wiphy: the wiphy reporting the BSS 2207 * @channel: The channel the frame was received on 2208 * @mgmt: the management frame (probe response or beacon) 2209 * @len: length of the management frame 2210 * @signal: the signal strength, type depends on the wiphy's signal_type 2211 * @gfp: context flags 2212 * 2213 * This informs cfg80211 that BSS information was found and 2214 * the BSS should be updated/added. 2215 */ 2216 struct cfg80211_bss* 2217 cfg80211_inform_bss_frame(struct wiphy *wiphy, 2218 struct ieee80211_channel *channel, 2219 struct ieee80211_mgmt *mgmt, size_t len, 2220 s32 signal, gfp_t gfp); 2221 2222 /** 2223 * cfg80211_inform_bss - inform cfg80211 of a new BSS 2224 * 2225 * @wiphy: the wiphy reporting the BSS 2226 * @channel: The channel the frame was received on 2227 * @bssid: the BSSID of the BSS 2228 * @timestamp: the TSF timestamp sent by the peer 2229 * @capability: the capability field sent by the peer 2230 * @beacon_interval: the beacon interval announced by the peer 2231 * @ie: additional IEs sent by the peer 2232 * @ielen: length of the additional IEs 2233 * @signal: the signal strength, type depends on the wiphy's signal_type 2234 * @gfp: context flags 2235 * 2236 * This informs cfg80211 that BSS information was found and 2237 * the BSS should be updated/added. 2238 */ 2239 struct cfg80211_bss* 2240 cfg80211_inform_bss(struct wiphy *wiphy, 2241 struct ieee80211_channel *channel, 2242 const u8 *bssid, 2243 u64 timestamp, u16 capability, u16 beacon_interval, 2244 const u8 *ie, size_t ielen, 2245 s32 signal, gfp_t gfp); 2246 2247 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 2248 struct ieee80211_channel *channel, 2249 const u8 *bssid, 2250 const u8 *ssid, size_t ssid_len, 2251 u16 capa_mask, u16 capa_val); 2252 static inline struct cfg80211_bss * 2253 cfg80211_get_ibss(struct wiphy *wiphy, 2254 struct ieee80211_channel *channel, 2255 const u8 *ssid, size_t ssid_len) 2256 { 2257 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 2258 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2259 } 2260 2261 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 2262 struct ieee80211_channel *channel, 2263 const u8 *meshid, size_t meshidlen, 2264 const u8 *meshcfg); 2265 void cfg80211_put_bss(struct cfg80211_bss *bss); 2266 2267 /** 2268 * cfg80211_unlink_bss - unlink BSS from internal data structures 2269 * @wiphy: the wiphy 2270 * @bss: the bss to remove 2271 * 2272 * This function removes the given BSS from the internal data structures 2273 * thereby making it no longer show up in scan results etc. Use this 2274 * function when you detect a BSS is gone. Normally BSSes will also time 2275 * out, so it is not necessary to use this function at all. 2276 */ 2277 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 2278 2279 /** 2280 * cfg80211_send_rx_auth - notification of processed authentication 2281 * @dev: network device 2282 * @buf: authentication frame (header + body) 2283 * @len: length of the frame data 2284 * 2285 * This function is called whenever an authentication has been processed in 2286 * station mode. The driver is required to call either this function or 2287 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 2288 * call. This function may sleep. 2289 */ 2290 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 2291 2292 /** 2293 * cfg80211_send_auth_timeout - notification of timed out authentication 2294 * @dev: network device 2295 * @addr: The MAC address of the device with which the authentication timed out 2296 * 2297 * This function may sleep. 2298 */ 2299 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 2300 2301 /** 2302 * __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled 2303 * @dev: network device 2304 * @addr: The MAC address of the device with which the authentication timed out 2305 * 2306 * When a pending authentication had no action yet, the driver may decide 2307 * to not send a deauth frame, but in that case must calls this function 2308 * to tell cfg80211 about this decision. It is only valid to call this 2309 * function within the deauth() callback. 2310 */ 2311 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr); 2312 2313 /** 2314 * cfg80211_send_rx_assoc - notification of processed association 2315 * @dev: network device 2316 * @buf: (re)association response frame (header + body) 2317 * @len: length of the frame data 2318 * 2319 * This function is called whenever a (re)association response has been 2320 * processed in station mode. The driver is required to call either this 2321 * function or cfg80211_send_assoc_timeout() to indicate the result of 2322 * cfg80211_ops::assoc() call. This function may sleep. 2323 */ 2324 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); 2325 2326 /** 2327 * cfg80211_send_assoc_timeout - notification of timed out association 2328 * @dev: network device 2329 * @addr: The MAC address of the device with which the association timed out 2330 * 2331 * This function may sleep. 2332 */ 2333 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 2334 2335 /** 2336 * cfg80211_send_deauth - notification of processed deauthentication 2337 * @dev: network device 2338 * @buf: deauthentication frame (header + body) 2339 * @len: length of the frame data 2340 * 2341 * This function is called whenever deauthentication has been processed in 2342 * station mode. This includes both received deauthentication frames and 2343 * locally generated ones. This function may sleep. 2344 */ 2345 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2346 2347 /** 2348 * __cfg80211_send_deauth - notification of processed deauthentication 2349 * @dev: network device 2350 * @buf: deauthentication frame (header + body) 2351 * @len: length of the frame data 2352 * 2353 * Like cfg80211_send_deauth(), but doesn't take the wdev lock. 2354 */ 2355 void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2356 2357 /** 2358 * cfg80211_send_disassoc - notification of processed disassociation 2359 * @dev: network device 2360 * @buf: disassociation response frame (header + body) 2361 * @len: length of the frame data 2362 * 2363 * This function is called whenever disassociation has been processed in 2364 * station mode. This includes both received disassociation frames and locally 2365 * generated ones. This function may sleep. 2366 */ 2367 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 2368 2369 /** 2370 * __cfg80211_send_disassoc - notification of processed disassociation 2371 * @dev: network device 2372 * @buf: disassociation response frame (header + body) 2373 * @len: length of the frame data 2374 * 2375 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock. 2376 */ 2377 void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, 2378 size_t len); 2379 2380 /** 2381 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication 2382 * @dev: network device 2383 * @buf: deauthentication frame (header + body) 2384 * @len: length of the frame data 2385 * 2386 * This function is called whenever a received Deauthentication frame has been 2387 * dropped in station mode because of MFP being used but the Deauthentication 2388 * frame was not protected. This function may sleep. 2389 */ 2390 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 2391 size_t len); 2392 2393 /** 2394 * cfg80211_send_unprot_disassoc - notification of unprotected disassociation 2395 * @dev: network device 2396 * @buf: disassociation frame (header + body) 2397 * @len: length of the frame data 2398 * 2399 * This function is called whenever a received Disassociation frame has been 2400 * dropped in station mode because of MFP being used but the Disassociation 2401 * frame was not protected. This function may sleep. 2402 */ 2403 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 2404 size_t len); 2405 2406 /** 2407 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 2408 * @dev: network device 2409 * @addr: The source MAC address of the frame 2410 * @key_type: The key type that the received frame used 2411 * @key_id: Key identifier (0..3) 2412 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 2413 * @gfp: allocation flags 2414 * 2415 * This function is called whenever the local MAC detects a MIC failure in a 2416 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 2417 * primitive. 2418 */ 2419 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 2420 enum nl80211_key_type key_type, int key_id, 2421 const u8 *tsc, gfp_t gfp); 2422 2423 /** 2424 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 2425 * 2426 * @dev: network device 2427 * @bssid: the BSSID of the IBSS joined 2428 * @gfp: allocation flags 2429 * 2430 * This function notifies cfg80211 that the device joined an IBSS or 2431 * switched to a different BSSID. Before this function can be called, 2432 * either a beacon has to have been received from the IBSS, or one of 2433 * the cfg80211_inform_bss{,_frame} functions must have been called 2434 * with the locally generated beacon -- this guarantees that there is 2435 * always a scan result for this IBSS. cfg80211 will handle the rest. 2436 */ 2437 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 2438 2439 /** 2440 * DOC: RFkill integration 2441 * 2442 * RFkill integration in cfg80211 is almost invisible to drivers, 2443 * as cfg80211 automatically registers an rfkill instance for each 2444 * wireless device it knows about. Soft kill is also translated 2445 * into disconnecting and turning all interfaces off, drivers are 2446 * expected to turn off the device when all interfaces are down. 2447 * 2448 * However, devices may have a hard RFkill line, in which case they 2449 * also need to interact with the rfkill subsystem, via cfg80211. 2450 * They can do this with a few helper functions documented here. 2451 */ 2452 2453 /** 2454 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 2455 * @wiphy: the wiphy 2456 * @blocked: block status 2457 */ 2458 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 2459 2460 /** 2461 * wiphy_rfkill_start_polling - start polling rfkill 2462 * @wiphy: the wiphy 2463 */ 2464 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 2465 2466 /** 2467 * wiphy_rfkill_stop_polling - stop polling rfkill 2468 * @wiphy: the wiphy 2469 */ 2470 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 2471 2472 #ifdef CONFIG_NL80211_TESTMODE 2473 /** 2474 * DOC: Test mode 2475 * 2476 * Test mode is a set of utility functions to allow drivers to 2477 * interact with driver-specific tools to aid, for instance, 2478 * factory programming. 2479 * 2480 * This chapter describes how drivers interact with it, for more 2481 * information see the nl80211 book's chapter on it. 2482 */ 2483 2484 /** 2485 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 2486 * @wiphy: the wiphy 2487 * @approxlen: an upper bound of the length of the data that will 2488 * be put into the skb 2489 * 2490 * This function allocates and pre-fills an skb for a reply to 2491 * the testmode command. Since it is intended for a reply, calling 2492 * it outside of the @testmode_cmd operation is invalid. 2493 * 2494 * The returned skb (or %NULL if any errors happen) is pre-filled 2495 * with the wiphy index and set up in a way that any data that is 2496 * put into the skb (with skb_put(), nla_put() or similar) will end 2497 * up being within the %NL80211_ATTR_TESTDATA attribute, so all that 2498 * needs to be done with the skb is adding data for the corresponding 2499 * userspace tool which can then read that data out of the testdata 2500 * attribute. You must not modify the skb in any other way. 2501 * 2502 * When done, call cfg80211_testmode_reply() with the skb and return 2503 * its error code as the result of the @testmode_cmd operation. 2504 */ 2505 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 2506 int approxlen); 2507 2508 /** 2509 * cfg80211_testmode_reply - send the reply skb 2510 * @skb: The skb, must have been allocated with 2511 * cfg80211_testmode_alloc_reply_skb() 2512 * 2513 * Returns an error code or 0 on success, since calling this 2514 * function will usually be the last thing before returning 2515 * from the @testmode_cmd you should return the error code. 2516 * Note that this function consumes the skb regardless of the 2517 * return value. 2518 */ 2519 int cfg80211_testmode_reply(struct sk_buff *skb); 2520 2521 /** 2522 * cfg80211_testmode_alloc_event_skb - allocate testmode event 2523 * @wiphy: the wiphy 2524 * @approxlen: an upper bound of the length of the data that will 2525 * be put into the skb 2526 * @gfp: allocation flags 2527 * 2528 * This function allocates and pre-fills an skb for an event on the 2529 * testmode multicast group. 2530 * 2531 * The returned skb (or %NULL if any errors happen) is set up in the 2532 * same way as with cfg80211_testmode_alloc_reply_skb() but prepared 2533 * for an event. As there, you should simply add data to it that will 2534 * then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must 2535 * not modify the skb in any other way. 2536 * 2537 * When done filling the skb, call cfg80211_testmode_event() with the 2538 * skb to send the event. 2539 */ 2540 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 2541 int approxlen, gfp_t gfp); 2542 2543 /** 2544 * cfg80211_testmode_event - send the event 2545 * @skb: The skb, must have been allocated with 2546 * cfg80211_testmode_alloc_event_skb() 2547 * @gfp: allocation flags 2548 * 2549 * This function sends the given @skb, which must have been allocated 2550 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 2551 * consumes it. 2552 */ 2553 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp); 2554 2555 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 2556 #else 2557 #define CFG80211_TESTMODE_CMD(cmd) 2558 #endif 2559 2560 /** 2561 * cfg80211_connect_result - notify cfg80211 of connection result 2562 * 2563 * @dev: network device 2564 * @bssid: the BSSID of the AP 2565 * @req_ie: association request IEs (maybe be %NULL) 2566 * @req_ie_len: association request IEs length 2567 * @resp_ie: association response IEs (may be %NULL) 2568 * @resp_ie_len: assoc response IEs length 2569 * @status: status code, 0 for successful connection, use 2570 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 2571 * the real status code for failures. 2572 * @gfp: allocation flags 2573 * 2574 * It should be called by the underlying driver whenever connect() has 2575 * succeeded. 2576 */ 2577 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 2578 const u8 *req_ie, size_t req_ie_len, 2579 const u8 *resp_ie, size_t resp_ie_len, 2580 u16 status, gfp_t gfp); 2581 2582 /** 2583 * cfg80211_roamed - notify cfg80211 of roaming 2584 * 2585 * @dev: network device 2586 * @bssid: the BSSID of the new AP 2587 * @req_ie: association request IEs (maybe be %NULL) 2588 * @req_ie_len: association request IEs length 2589 * @resp_ie: association response IEs (may be %NULL) 2590 * @resp_ie_len: assoc response IEs length 2591 * @gfp: allocation flags 2592 * 2593 * It should be called by the underlying driver whenever it roamed 2594 * from one AP to another while connected. 2595 */ 2596 void cfg80211_roamed(struct net_device *dev, const u8 *bssid, 2597 const u8 *req_ie, size_t req_ie_len, 2598 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 2599 2600 /** 2601 * cfg80211_disconnected - notify cfg80211 that connection was dropped 2602 * 2603 * @dev: network device 2604 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 2605 * @ie_len: length of IEs 2606 * @reason: reason code for the disconnection, set it to 0 if unknown 2607 * @gfp: allocation flags 2608 * 2609 * After it calls this function, the driver should enter an idle state 2610 * and not try to connect to any AP any more. 2611 */ 2612 void cfg80211_disconnected(struct net_device *dev, u16 reason, 2613 u8 *ie, size_t ie_len, gfp_t gfp); 2614 2615 /** 2616 * cfg80211_ready_on_channel - notification of remain_on_channel start 2617 * @dev: network device 2618 * @cookie: the request cookie 2619 * @chan: The current channel (from remain_on_channel request) 2620 * @channel_type: Channel type 2621 * @duration: Duration in milliseconds that the driver intents to remain on the 2622 * channel 2623 * @gfp: allocation flags 2624 */ 2625 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, 2626 struct ieee80211_channel *chan, 2627 enum nl80211_channel_type channel_type, 2628 unsigned int duration, gfp_t gfp); 2629 2630 /** 2631 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 2632 * @dev: network device 2633 * @cookie: the request cookie 2634 * @chan: The current channel (from remain_on_channel request) 2635 * @channel_type: Channel type 2636 * @gfp: allocation flags 2637 */ 2638 void cfg80211_remain_on_channel_expired(struct net_device *dev, 2639 u64 cookie, 2640 struct ieee80211_channel *chan, 2641 enum nl80211_channel_type channel_type, 2642 gfp_t gfp); 2643 2644 2645 /** 2646 * cfg80211_new_sta - notify userspace about station 2647 * 2648 * @dev: the netdev 2649 * @mac_addr: the station's address 2650 * @sinfo: the station information 2651 * @gfp: allocation flags 2652 */ 2653 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 2654 struct station_info *sinfo, gfp_t gfp); 2655 2656 /** 2657 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 2658 * @dev: network device 2659 * @freq: Frequency on which the frame was received in MHz 2660 * @buf: Management frame (header + body) 2661 * @len: length of the frame data 2662 * @gfp: context flags 2663 * 2664 * Returns %true if a user space application has registered for this frame. 2665 * For action frames, that makes it responsible for rejecting unrecognized 2666 * action frames; %false otherwise, in which case for action frames the 2667 * driver is responsible for rejecting the frame. 2668 * 2669 * This function is called whenever an Action frame is received for a station 2670 * mode interface, but is not processed in kernel. 2671 */ 2672 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, 2673 size_t len, gfp_t gfp); 2674 2675 /** 2676 * cfg80211_mgmt_tx_status - notification of TX status for management frame 2677 * @dev: network device 2678 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 2679 * @buf: Management frame (header + body) 2680 * @len: length of the frame data 2681 * @ack: Whether frame was acknowledged 2682 * @gfp: context flags 2683 * 2684 * This function is called whenever a management frame was requested to be 2685 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 2686 * transmission attempt. 2687 */ 2688 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, 2689 const u8 *buf, size_t len, bool ack, gfp_t gfp); 2690 2691 2692 /** 2693 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 2694 * @dev: network device 2695 * @rssi_event: the triggered RSSI event 2696 * @gfp: context flags 2697 * 2698 * This function is called when a configured connection quality monitoring 2699 * rssi threshold reached event occurs. 2700 */ 2701 void cfg80211_cqm_rssi_notify(struct net_device *dev, 2702 enum nl80211_cqm_rssi_threshold_event rssi_event, 2703 gfp_t gfp); 2704 2705 /** 2706 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 2707 * @dev: network device 2708 * @peer: peer's MAC address 2709 * @num_packets: how many packets were lost -- should be a fixed threshold 2710 * but probably no less than maybe 50, or maybe a throughput dependent 2711 * threshold (to account for temporary interference) 2712 * @gfp: context flags 2713 */ 2714 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 2715 const u8 *peer, u32 num_packets, gfp_t gfp); 2716 2717 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 2718 2719 /* wiphy_printk helpers, similar to dev_printk */ 2720 2721 #define wiphy_printk(level, wiphy, format, args...) \ 2722 dev_printk(level, &(wiphy)->dev, format, ##args) 2723 #define wiphy_emerg(wiphy, format, args...) \ 2724 dev_emerg(&(wiphy)->dev, format, ##args) 2725 #define wiphy_alert(wiphy, format, args...) \ 2726 dev_alert(&(wiphy)->dev, format, ##args) 2727 #define wiphy_crit(wiphy, format, args...) \ 2728 dev_crit(&(wiphy)->dev, format, ##args) 2729 #define wiphy_err(wiphy, format, args...) \ 2730 dev_err(&(wiphy)->dev, format, ##args) 2731 #define wiphy_warn(wiphy, format, args...) \ 2732 dev_warn(&(wiphy)->dev, format, ##args) 2733 #define wiphy_notice(wiphy, format, args...) \ 2734 dev_notice(&(wiphy)->dev, format, ##args) 2735 #define wiphy_info(wiphy, format, args...) \ 2736 dev_info(&(wiphy)->dev, format, ##args) 2737 2738 #define wiphy_debug(wiphy, format, args...) \ 2739 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 2740 2741 #define wiphy_dbg(wiphy, format, args...) \ 2742 dev_dbg(&(wiphy)->dev, format, ##args) 2743 2744 #if defined(VERBOSE_DEBUG) 2745 #define wiphy_vdbg wiphy_dbg 2746 #else 2747 #define wiphy_vdbg(wiphy, format, args...) \ 2748 ({ \ 2749 if (0) \ 2750 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 2751 0; \ 2752 }) 2753 #endif 2754 2755 /* 2756 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 2757 * of using a WARN/WARN_ON to get the message out, including the 2758 * file/line information and a backtrace. 2759 */ 2760 #define wiphy_WARN(wiphy, format, args...) \ 2761 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 2762 2763 #endif /* __NET_CFG80211_H */ 2764