1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #ifndef IEEE80211_I_H 13 #define IEEE80211_I_H 14 15 #include <linux/kernel.h> 16 #include <linux/device.h> 17 #include <linux/if_ether.h> 18 #include <linux/interrupt.h> 19 #include <linux/list.h> 20 #include <linux/netdevice.h> 21 #include <linux/skbuff.h> 22 #include <linux/workqueue.h> 23 #include <linux/types.h> 24 #include <linux/spinlock.h> 25 #include <linux/etherdevice.h> 26 #include <linux/leds.h> 27 #include <linux/idr.h> 28 #include <net/ieee80211_radiotap.h> 29 #include <net/cfg80211.h> 30 #include <net/mac80211.h> 31 #include "key.h" 32 #include "sta_info.h" 33 #include "debug.h" 34 35 struct ieee80211_local; 36 37 /* Maximum number of broadcast/multicast frames to buffer when some of the 38 * associated stations are using power saving. */ 39 #define AP_MAX_BC_BUFFER 128 40 41 /* Maximum number of frames buffered to all STAs, including multicast frames. 42 * Note: increasing this limit increases the potential memory requirement. Each 43 * frame can be up to about 2 kB long. */ 44 #define TOTAL_MAX_TX_BUFFER 512 45 46 /* Required encryption head and tailroom */ 47 #define IEEE80211_ENCRYPT_HEADROOM 8 48 #define IEEE80211_ENCRYPT_TAILROOM 18 49 50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 51 * reception of at least three fragmented frames. This limit can be increased 52 * by changing this define, at the cost of slower frame reassembly and 53 * increased memory use (about 2 kB of RAM per entry). */ 54 #define IEEE80211_FRAGMENT_MAX 4 55 56 /* power level hasn't been configured (or set to automatic) */ 57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 58 59 /* 60 * Some APs experience problems when working with U-APSD. Decrease the 61 * probability of that happening by using legacy mode for all ACs but VO. 62 * The AP that caused us trouble was a Cisco 4410N. It ignores our 63 * setting, and always treats non-VO ACs as legacy. 64 */ 65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 66 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 67 68 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 69 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 70 71 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 72 73 struct ieee80211_fragment_entry { 74 unsigned long first_frag_time; 75 unsigned int seq; 76 unsigned int rx_queue; 77 unsigned int last_frag; 78 unsigned int extra_len; 79 struct sk_buff_head skb_list; 80 int ccmp; /* Whether fragments were encrypted with CCMP */ 81 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 82 }; 83 84 85 struct ieee80211_bss { 86 u32 device_ts_beacon, device_ts_presp; 87 88 bool wmm_used; 89 bool uapsd_supported; 90 91 #define IEEE80211_MAX_SUPP_RATES 32 92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 93 size_t supp_rates_len; 94 struct ieee80211_rate *beacon_rate; 95 96 /* 97 * During association, we save an ERP value from a probe response so 98 * that we can feed ERP info to the driver when handling the 99 * association completes. these fields probably won't be up-to-date 100 * otherwise, you probably don't want to use them. 101 */ 102 bool has_erp_value; 103 u8 erp_value; 104 105 /* Keep track of the corruption of the last beacon/probe response. */ 106 u8 corrupt_data; 107 108 /* Keep track of what bits of information we have valid info for. */ 109 u8 valid_data; 110 }; 111 112 /** 113 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 114 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 115 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 116 * 117 * These are bss flags that are attached to a bss in the 118 * @corrupt_data field of &struct ieee80211_bss. 119 */ 120 enum ieee80211_bss_corrupt_data_flags { 121 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 122 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 123 }; 124 125 /** 126 * enum ieee80211_valid_data_flags - BSS valid data flags 127 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 128 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 129 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 130 * 131 * These are bss flags that are attached to a bss in the 132 * @valid_data field of &struct ieee80211_bss. They show which parts 133 * of the data structure were recieved as a result of an un-corrupted 134 * beacon/probe response. 135 */ 136 enum ieee80211_bss_valid_data_flags { 137 IEEE80211_BSS_VALID_WMM = BIT(1), 138 IEEE80211_BSS_VALID_RATES = BIT(2), 139 IEEE80211_BSS_VALID_ERP = BIT(3) 140 }; 141 142 typedef unsigned __bitwise__ ieee80211_tx_result; 143 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 144 #define TX_DROP ((__force ieee80211_tx_result) 1u) 145 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 146 147 #define IEEE80211_TX_UNICAST BIT(1) 148 #define IEEE80211_TX_PS_BUFFERED BIT(2) 149 150 struct ieee80211_tx_data { 151 struct sk_buff *skb; 152 struct sk_buff_head skbs; 153 struct ieee80211_local *local; 154 struct ieee80211_sub_if_data *sdata; 155 struct sta_info *sta; 156 struct ieee80211_key *key; 157 struct ieee80211_tx_rate rate; 158 159 unsigned int flags; 160 }; 161 162 163 typedef unsigned __bitwise__ ieee80211_rx_result; 164 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 165 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 166 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 167 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 168 169 /** 170 * enum ieee80211_packet_rx_flags - packet RX flags 171 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 172 * (incl. multicast frames) 173 * @IEEE80211_RX_FRAGMENTED: fragmented frame 174 * @IEEE80211_RX_AMSDU: a-MSDU packet 175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 177 * 178 * These are per-frame flags that are attached to a frame in the 179 * @rx_flags field of &struct ieee80211_rx_status. 180 */ 181 enum ieee80211_packet_rx_flags { 182 IEEE80211_RX_RA_MATCH = BIT(1), 183 IEEE80211_RX_FRAGMENTED = BIT(2), 184 IEEE80211_RX_AMSDU = BIT(3), 185 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 186 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 187 }; 188 189 /** 190 * enum ieee80211_rx_flags - RX data flags 191 * 192 * @IEEE80211_RX_CMNTR: received on cooked monitor already 193 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 194 * to cfg80211_report_obss_beacon(). 195 * 196 * These flags are used across handling multiple interfaces 197 * for a single frame. 198 */ 199 enum ieee80211_rx_flags { 200 IEEE80211_RX_CMNTR = BIT(0), 201 IEEE80211_RX_BEACON_REPORTED = BIT(1), 202 }; 203 204 struct ieee80211_rx_data { 205 struct sk_buff *skb; 206 struct ieee80211_local *local; 207 struct ieee80211_sub_if_data *sdata; 208 struct sta_info *sta; 209 struct ieee80211_key *key; 210 211 unsigned int flags; 212 213 /* 214 * Index into sequence numbers array, 0..16 215 * since the last (16) is used for non-QoS, 216 * will be 16 on non-QoS frames. 217 */ 218 int seqno_idx; 219 220 /* 221 * Index into the security IV/PN arrays, 0..16 222 * since the last (16) is used for CCMP-encrypted 223 * management frames, will be set to 16 on mgmt 224 * frames and 0 on non-QoS frames. 225 */ 226 int security_idx; 227 228 u32 tkip_iv32; 229 u16 tkip_iv16; 230 }; 231 232 struct beacon_data { 233 u8 *head, *tail; 234 int head_len, tail_len; 235 struct rcu_head rcu_head; 236 }; 237 238 struct probe_resp { 239 struct rcu_head rcu_head; 240 int len; 241 u8 data[0]; 242 }; 243 244 struct ps_data { 245 /* yes, this looks ugly, but guarantees that we can later use 246 * bitmap_empty :) 247 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 248 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 249 struct sk_buff_head bc_buf; 250 atomic_t num_sta_ps; /* number of stations in PS mode */ 251 int dtim_count; 252 bool dtim_bc_mc; 253 }; 254 255 struct ieee80211_if_ap { 256 struct beacon_data __rcu *beacon; 257 struct probe_resp __rcu *probe_resp; 258 259 /* to be used after channel switch. */ 260 struct cfg80211_beacon_data *next_beacon; 261 struct list_head vlans; 262 263 struct ps_data ps; 264 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 265 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 266 driver_smps_mode; /* smps mode request */ 267 268 struct work_struct request_smps_work; 269 }; 270 271 struct ieee80211_if_wds { 272 struct sta_info *sta; 273 u8 remote_addr[ETH_ALEN]; 274 }; 275 276 struct ieee80211_if_vlan { 277 struct list_head list; 278 279 /* used for all tx if the VLAN is configured to 4-addr mode */ 280 struct sta_info __rcu *sta; 281 }; 282 283 struct mesh_stats { 284 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 285 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 286 __u32 fwded_frames; /* Mesh total forwarded frames */ 287 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 288 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 289 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 290 }; 291 292 #define PREQ_Q_F_START 0x1 293 #define PREQ_Q_F_REFRESH 0x2 294 struct mesh_preq_queue { 295 struct list_head list; 296 u8 dst[ETH_ALEN]; 297 u8 flags; 298 }; 299 300 #if HZ/100 == 0 301 #define IEEE80211_ROC_MIN_LEFT 1 302 #else 303 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 304 #endif 305 306 struct ieee80211_roc_work { 307 struct list_head list; 308 struct list_head dependents; 309 310 struct delayed_work work; 311 312 struct ieee80211_sub_if_data *sdata; 313 314 struct ieee80211_channel *chan; 315 316 bool started, abort, hw_begun, notified; 317 bool to_be_freed; 318 319 unsigned long hw_start_time; 320 321 u32 duration, req_duration; 322 struct sk_buff *frame; 323 u64 cookie, mgmt_tx_cookie; 324 enum ieee80211_roc_type type; 325 }; 326 327 /* flags used in struct ieee80211_if_managed.flags */ 328 enum ieee80211_sta_flags { 329 IEEE80211_STA_CONNECTION_POLL = BIT(1), 330 IEEE80211_STA_CONTROL_PORT = BIT(2), 331 IEEE80211_STA_DISABLE_HT = BIT(4), 332 IEEE80211_STA_CSA_RECEIVED = BIT(5), 333 IEEE80211_STA_MFP_ENABLED = BIT(6), 334 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 335 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 336 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 337 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 338 IEEE80211_STA_DISABLE_VHT = BIT(11), 339 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 340 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 341 IEEE80211_STA_DISABLE_WMM = BIT(14), 342 }; 343 344 struct ieee80211_mgd_auth_data { 345 struct cfg80211_bss *bss; 346 unsigned long timeout; 347 int tries; 348 u16 algorithm, expected_transaction; 349 350 u8 key[WLAN_KEY_LEN_WEP104]; 351 u8 key_len, key_idx; 352 bool done; 353 bool timeout_started; 354 355 u16 sae_trans, sae_status; 356 size_t data_len; 357 u8 data[]; 358 }; 359 360 struct ieee80211_mgd_assoc_data { 361 struct cfg80211_bss *bss; 362 const u8 *supp_rates; 363 364 unsigned long timeout; 365 int tries; 366 367 u16 capability; 368 u8 prev_bssid[ETH_ALEN]; 369 u8 ssid[IEEE80211_MAX_SSID_LEN]; 370 u8 ssid_len; 371 u8 supp_rates_len; 372 bool wmm, uapsd; 373 bool need_beacon; 374 bool synced; 375 bool timeout_started; 376 377 u8 ap_ht_param; 378 379 struct ieee80211_vht_cap ap_vht_cap; 380 381 size_t ie_len; 382 u8 ie[]; 383 }; 384 385 struct ieee80211_if_managed { 386 struct timer_list timer; 387 struct timer_list conn_mon_timer; 388 struct timer_list bcn_mon_timer; 389 struct timer_list chswitch_timer; 390 struct work_struct monitor_work; 391 struct work_struct chswitch_work; 392 struct work_struct beacon_connection_loss_work; 393 struct work_struct csa_connection_drop_work; 394 395 unsigned long beacon_timeout; 396 unsigned long probe_timeout; 397 int probe_send_count; 398 bool nullfunc_failed; 399 bool connection_loss; 400 401 struct cfg80211_bss *associated; 402 struct ieee80211_mgd_auth_data *auth_data; 403 struct ieee80211_mgd_assoc_data *assoc_data; 404 405 u8 bssid[ETH_ALEN]; 406 407 u16 aid; 408 409 bool powersave; /* powersave requested for this iface */ 410 bool broken_ap; /* AP is broken -- turn off powersave */ 411 bool have_beacon; 412 u8 dtim_period; 413 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 414 driver_smps_mode; /* smps mode request */ 415 416 struct work_struct request_smps_work; 417 418 unsigned int flags; 419 420 bool beacon_crc_valid; 421 u32 beacon_crc; 422 423 bool status_acked; 424 bool status_received; 425 __le16 status_fc; 426 427 enum { 428 IEEE80211_MFP_DISABLED, 429 IEEE80211_MFP_OPTIONAL, 430 IEEE80211_MFP_REQUIRED 431 } mfp; /* management frame protection */ 432 433 /* 434 * Bitmask of enabled u-apsd queues, 435 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 436 * to take effect. 437 */ 438 unsigned int uapsd_queues; 439 440 /* 441 * Maximum number of buffered frames AP can deliver during a 442 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 443 * Needs a new association to take effect. 444 */ 445 unsigned int uapsd_max_sp_len; 446 447 int wmm_last_param_set; 448 449 u8 use_4addr; 450 451 s16 p2p_noa_index; 452 453 /* Signal strength from the last Beacon frame in the current BSS. */ 454 int last_beacon_signal; 455 456 /* 457 * Weighted average of the signal strength from Beacon frames in the 458 * current BSS. This is in units of 1/16 of the signal unit to maintain 459 * accuracy and to speed up calculations, i.e., the value need to be 460 * divided by 16 to get the actual value. 461 */ 462 int ave_beacon_signal; 463 464 /* 465 * Number of Beacon frames used in ave_beacon_signal. This can be used 466 * to avoid generating less reliable cqm events that would be based 467 * only on couple of received frames. 468 */ 469 unsigned int count_beacon_signal; 470 471 /* 472 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 473 * that triggered a cqm event. 0 indicates that no event has been 474 * generated for the current association. 475 */ 476 int last_cqm_event_signal; 477 478 /* 479 * State variables for keeping track of RSSI of the AP currently 480 * connected to and informing driver when RSSI has gone 481 * below/above a certain threshold. 482 */ 483 int rssi_min_thold, rssi_max_thold; 484 int last_ave_beacon_signal; 485 486 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 487 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 488 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 489 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 490 }; 491 492 struct ieee80211_if_ibss { 493 struct timer_list timer; 494 struct work_struct csa_connection_drop_work; 495 496 unsigned long last_scan_completed; 497 498 u32 basic_rates; 499 500 bool fixed_bssid; 501 bool fixed_channel; 502 bool privacy; 503 504 bool control_port; 505 bool userspace_handles_dfs; 506 507 u8 bssid[ETH_ALEN] __aligned(2); 508 u8 ssid[IEEE80211_MAX_SSID_LEN]; 509 u8 ssid_len, ie_len; 510 u8 *ie; 511 struct cfg80211_chan_def chandef; 512 513 unsigned long ibss_join_req; 514 /* probe response/beacon for IBSS */ 515 struct beacon_data __rcu *presp; 516 517 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 518 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 519 520 spinlock_t incomplete_lock; 521 struct list_head incomplete_stations; 522 523 enum { 524 IEEE80211_IBSS_MLME_SEARCH, 525 IEEE80211_IBSS_MLME_JOINED, 526 } state; 527 }; 528 529 /** 530 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 531 * 532 * these declarations define the interface, which enables 533 * vendor-specific mesh synchronization 534 * 535 */ 536 struct ieee802_11_elems; 537 struct ieee80211_mesh_sync_ops { 538 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 539 u16 stype, 540 struct ieee80211_mgmt *mgmt, 541 struct ieee802_11_elems *elems, 542 struct ieee80211_rx_status *rx_status); 543 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 544 /* add other framework functions here */ 545 }; 546 547 struct mesh_csa_settings { 548 struct rcu_head rcu_head; 549 struct cfg80211_csa_settings settings; 550 }; 551 552 struct ieee80211_if_mesh { 553 struct timer_list housekeeping_timer; 554 struct timer_list mesh_path_timer; 555 struct timer_list mesh_path_root_timer; 556 557 unsigned long wrkq_flags; 558 unsigned long mbss_changed; 559 560 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 561 size_t mesh_id_len; 562 /* Active Path Selection Protocol Identifier */ 563 u8 mesh_pp_id; 564 /* Active Path Selection Metric Identifier */ 565 u8 mesh_pm_id; 566 /* Congestion Control Mode Identifier */ 567 u8 mesh_cc_id; 568 /* Synchronization Protocol Identifier */ 569 u8 mesh_sp_id; 570 /* Authentication Protocol Identifier */ 571 u8 mesh_auth_id; 572 /* Local mesh Sequence Number */ 573 u32 sn; 574 /* Last used PREQ ID */ 575 u32 preq_id; 576 atomic_t mpaths; 577 /* Timestamp of last SN update */ 578 unsigned long last_sn_update; 579 /* Time when it's ok to send next PERR */ 580 unsigned long next_perr; 581 /* Timestamp of last PREQ sent */ 582 unsigned long last_preq; 583 struct mesh_rmc *rmc; 584 spinlock_t mesh_preq_queue_lock; 585 struct mesh_preq_queue preq_queue; 586 int preq_queue_len; 587 struct mesh_stats mshstats; 588 struct mesh_config mshcfg; 589 atomic_t estab_plinks; 590 u32 mesh_seqnum; 591 bool accepting_plinks; 592 int num_gates; 593 struct beacon_data __rcu *beacon; 594 const u8 *ie; 595 u8 ie_len; 596 enum { 597 IEEE80211_MESH_SEC_NONE = 0x0, 598 IEEE80211_MESH_SEC_AUTHED = 0x1, 599 IEEE80211_MESH_SEC_SECURED = 0x2, 600 } security; 601 bool user_mpm; 602 /* Extensible Synchronization Framework */ 603 const struct ieee80211_mesh_sync_ops *sync_ops; 604 s64 sync_offset_clockdrift_max; 605 spinlock_t sync_offset_lock; 606 bool adjusting_tbtt; 607 /* mesh power save */ 608 enum nl80211_mesh_power_mode nonpeer_pm; 609 int ps_peers_light_sleep; 610 int ps_peers_deep_sleep; 611 struct ps_data ps; 612 /* Channel Switching Support */ 613 struct mesh_csa_settings __rcu *csa; 614 bool chsw_init; 615 u8 chsw_ttl; 616 u16 pre_value; 617 }; 618 619 #ifdef CONFIG_MAC80211_MESH 620 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 621 do { (msh)->mshstats.name++; } while (0) 622 #else 623 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 624 do { } while (0) 625 #endif 626 627 /** 628 * enum ieee80211_sub_if_data_flags - virtual interface flags 629 * 630 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 631 * @IEEE80211_SDATA_PROMISC: interface is promisc 632 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 633 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 634 * associated stations and deliver multicast frames both 635 * back to wireless media and to the local net stack. 636 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 637 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 638 */ 639 enum ieee80211_sub_if_data_flags { 640 IEEE80211_SDATA_ALLMULTI = BIT(0), 641 IEEE80211_SDATA_PROMISC = BIT(1), 642 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 643 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 644 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 645 IEEE80211_SDATA_IN_DRIVER = BIT(5), 646 }; 647 648 /** 649 * enum ieee80211_sdata_state_bits - virtual interface state bits 650 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 651 * mirrors netif_running() but is separate for interface type 652 * change handling while the interface is up 653 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 654 * mode, so queues are stopped 655 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 656 * to offchannel, reset when offchannel returns 657 */ 658 enum ieee80211_sdata_state_bits { 659 SDATA_STATE_RUNNING, 660 SDATA_STATE_OFFCHANNEL, 661 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 662 }; 663 664 /** 665 * enum ieee80211_chanctx_mode - channel context configuration mode 666 * 667 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 668 * multiple interfaces 669 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 670 * only by a single interface. This can be used for example for 671 * non-fixed channel IBSS. 672 */ 673 enum ieee80211_chanctx_mode { 674 IEEE80211_CHANCTX_SHARED, 675 IEEE80211_CHANCTX_EXCLUSIVE 676 }; 677 678 struct ieee80211_chanctx { 679 struct list_head list; 680 struct rcu_head rcu_head; 681 682 enum ieee80211_chanctx_mode mode; 683 int refcount; 684 bool driver_present; 685 686 struct ieee80211_chanctx_conf conf; 687 }; 688 689 struct ieee80211_sub_if_data { 690 struct list_head list; 691 692 struct wireless_dev wdev; 693 694 /* keys */ 695 struct list_head key_list; 696 697 /* count for keys needing tailroom space allocation */ 698 int crypto_tx_tailroom_needed_cnt; 699 int crypto_tx_tailroom_pending_dec; 700 struct delayed_work dec_tailroom_needed_wk; 701 702 struct net_device *dev; 703 struct ieee80211_local *local; 704 705 unsigned int flags; 706 707 unsigned long state; 708 709 int drop_unencrypted; 710 711 char name[IFNAMSIZ]; 712 713 /* Fragment table for host-based reassembly */ 714 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 715 unsigned int fragment_next; 716 717 /* TID bitmap for NoAck policy */ 718 u16 noack_map; 719 720 /* bit field of ACM bits (BIT(802.1D tag)) */ 721 u8 wmm_acm; 722 723 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 724 struct ieee80211_key __rcu *default_unicast_key; 725 struct ieee80211_key __rcu *default_multicast_key; 726 struct ieee80211_key __rcu *default_mgmt_key; 727 728 u16 sequence_number; 729 __be16 control_port_protocol; 730 bool control_port_no_encrypt; 731 732 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 733 734 struct work_struct csa_finalize_work; 735 int csa_counter_offset_beacon; 736 int csa_counter_offset_presp; 737 bool csa_radar_required; 738 739 /* used to reconfigure hardware SM PS */ 740 struct work_struct recalc_smps; 741 742 struct work_struct work; 743 struct sk_buff_head skb_queue; 744 745 u8 needed_rx_chains; 746 enum ieee80211_smps_mode smps_mode; 747 748 int user_power_level; /* in dBm */ 749 int ap_power_level; /* in dBm */ 750 751 bool radar_required; 752 struct delayed_work dfs_cac_timer_work; 753 754 /* 755 * AP this belongs to: self in AP mode and 756 * corresponding AP in VLAN mode, NULL for 757 * all others (might be needed later in IBSS) 758 */ 759 struct ieee80211_if_ap *bss; 760 761 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 762 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 763 764 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 765 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 766 767 union { 768 struct ieee80211_if_ap ap; 769 struct ieee80211_if_wds wds; 770 struct ieee80211_if_vlan vlan; 771 struct ieee80211_if_managed mgd; 772 struct ieee80211_if_ibss ibss; 773 struct ieee80211_if_mesh mesh; 774 u32 mntr_flags; 775 } u; 776 777 spinlock_t cleanup_stations_lock; 778 struct list_head cleanup_stations; 779 struct work_struct cleanup_stations_wk; 780 781 #ifdef CONFIG_MAC80211_DEBUGFS 782 struct { 783 struct dentry *subdir_stations; 784 struct dentry *default_unicast_key; 785 struct dentry *default_multicast_key; 786 struct dentry *default_mgmt_key; 787 } debugfs; 788 #endif 789 790 /* must be last, dynamically sized area in this! */ 791 struct ieee80211_vif vif; 792 }; 793 794 static inline 795 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 796 { 797 return container_of(p, struct ieee80211_sub_if_data, vif); 798 } 799 800 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 801 __acquires(&sdata->wdev.mtx) 802 { 803 mutex_lock(&sdata->wdev.mtx); 804 __acquire(&sdata->wdev.mtx); 805 } 806 807 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 808 __releases(&sdata->wdev.mtx) 809 { 810 mutex_unlock(&sdata->wdev.mtx); 811 __release(&sdata->wdev.mtx); 812 } 813 814 static inline void 815 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 816 { 817 lockdep_assert_held(&sdata->wdev.mtx); 818 } 819 820 static inline enum ieee80211_band 821 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 822 { 823 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 824 struct ieee80211_chanctx_conf *chanctx_conf; 825 826 rcu_read_lock(); 827 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 828 if (!WARN_ON(!chanctx_conf)) 829 band = chanctx_conf->def.chan->band; 830 rcu_read_unlock(); 831 832 return band; 833 } 834 835 static inline int 836 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 837 { 838 switch (chandef->width) { 839 case NL80211_CHAN_WIDTH_5: 840 return 2; 841 case NL80211_CHAN_WIDTH_10: 842 return 1; 843 default: 844 return 0; 845 } 846 } 847 848 static inline int 849 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 850 { 851 struct ieee80211_chanctx_conf *chanctx_conf; 852 int shift = 0; 853 854 rcu_read_lock(); 855 chanctx_conf = rcu_dereference(vif->chanctx_conf); 856 if (chanctx_conf) 857 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 858 rcu_read_unlock(); 859 860 return shift; 861 } 862 863 enum sdata_queue_type { 864 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 865 IEEE80211_SDATA_QUEUE_AGG_START = 1, 866 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 867 }; 868 869 enum { 870 IEEE80211_RX_MSG = 1, 871 IEEE80211_TX_STATUS_MSG = 2, 872 }; 873 874 enum queue_stop_reason { 875 IEEE80211_QUEUE_STOP_REASON_DRIVER, 876 IEEE80211_QUEUE_STOP_REASON_PS, 877 IEEE80211_QUEUE_STOP_REASON_CSA, 878 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 879 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 880 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 881 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 882 IEEE80211_QUEUE_STOP_REASON_FLUSH, 883 }; 884 885 #ifdef CONFIG_MAC80211_LEDS 886 struct tpt_led_trigger { 887 struct led_trigger trig; 888 char name[32]; 889 const struct ieee80211_tpt_blink *blink_table; 890 unsigned int blink_table_len; 891 struct timer_list timer; 892 unsigned long prev_traffic; 893 unsigned long tx_bytes, rx_bytes; 894 unsigned int active, want; 895 bool running; 896 }; 897 #endif 898 899 /** 900 * mac80211 scan flags - currently active scan mode 901 * 902 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 903 * well be on the operating channel 904 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 905 * determine if we are on the operating channel or not 906 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 907 * channel. This should not interrupt normal traffic. 908 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 909 * that the scan completed. 910 * @SCAN_ABORTED: Set for our scan work function when the driver reported 911 * a scan complete for an aborted scan. 912 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 913 * cancelled. 914 */ 915 enum { 916 SCAN_SW_SCANNING, 917 SCAN_HW_SCANNING, 918 SCAN_ONCHANNEL_SCANNING, 919 SCAN_COMPLETED, 920 SCAN_ABORTED, 921 SCAN_HW_CANCELLED, 922 }; 923 924 /** 925 * enum mac80211_scan_state - scan state machine states 926 * 927 * @SCAN_DECISION: Main entry point to the scan state machine, this state 928 * determines if we should keep on scanning or switch back to the 929 * operating channel 930 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 931 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 932 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 933 * send out data 934 * @SCAN_RESUME: Resume the scan and scan the next channel 935 * @SCAN_ABORT: Abort the scan and go back to operating channel 936 */ 937 enum mac80211_scan_state { 938 SCAN_DECISION, 939 SCAN_SET_CHANNEL, 940 SCAN_SEND_PROBE, 941 SCAN_SUSPEND, 942 SCAN_RESUME, 943 SCAN_ABORT, 944 }; 945 946 struct ieee80211_local { 947 /* embed the driver visible part. 948 * don't cast (use the static inlines below), but we keep 949 * it first anyway so they become a no-op */ 950 struct ieee80211_hw hw; 951 952 const struct ieee80211_ops *ops; 953 954 /* 955 * private workqueue to mac80211. mac80211 makes this accessible 956 * via ieee80211_queue_work() 957 */ 958 struct workqueue_struct *workqueue; 959 960 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 961 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 962 spinlock_t queue_stop_reason_lock; 963 964 int open_count; 965 int monitors, cooked_mntrs; 966 /* number of interfaces with corresponding FIF_ flags */ 967 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 968 fif_probe_req; 969 int probe_req_reg; 970 unsigned int filter_flags; /* FIF_* */ 971 972 bool wiphy_ciphers_allocated; 973 974 bool use_chanctx; 975 976 /* protects the aggregated multicast list and filter calls */ 977 spinlock_t filter_lock; 978 979 /* used for uploading changed mc list */ 980 struct work_struct reconfig_filter; 981 982 /* aggregated multicast list */ 983 struct netdev_hw_addr_list mc_list; 984 985 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 986 987 /* 988 * suspended is true if we finished all the suspend _and_ we have 989 * not yet come up from resume. This is to be used by mac80211 990 * to ensure driver sanity during suspend and mac80211's own 991 * sanity. It can eventually be used for WoW as well. 992 */ 993 bool suspended; 994 995 /* 996 * Resuming is true while suspended, but when we're reprogramming the 997 * hardware -- at that time it's allowed to use ieee80211_queue_work() 998 * again even though some other parts of the stack are still suspended 999 * and we still drop received frames to avoid waking the stack. 1000 */ 1001 bool resuming; 1002 1003 /* 1004 * quiescing is true during the suspend process _only_ to 1005 * ease timer cancelling etc. 1006 */ 1007 bool quiescing; 1008 1009 /* device is started */ 1010 bool started; 1011 1012 /* device is during a HW reconfig */ 1013 bool in_reconfig; 1014 1015 /* wowlan is enabled -- don't reconfig on resume */ 1016 bool wowlan; 1017 1018 /* DFS/radar detection is enabled */ 1019 bool radar_detect_enabled; 1020 struct work_struct radar_detected_work; 1021 1022 /* number of RX chains the hardware has */ 1023 u8 rx_chains; 1024 1025 int tx_headroom; /* required headroom for hardware/radiotap */ 1026 1027 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1028 * added to skb_queue will be processed, but frames in 1029 * skb_queue_unreliable may be dropped if the total length of these 1030 * queues increases over the limit. */ 1031 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1032 struct tasklet_struct tasklet; 1033 struct sk_buff_head skb_queue; 1034 struct sk_buff_head skb_queue_unreliable; 1035 1036 spinlock_t rx_path_lock; 1037 1038 /* Station data */ 1039 /* 1040 * The mutex only protects the list, hash table and 1041 * counter, reads are done with RCU. 1042 */ 1043 struct mutex sta_mtx; 1044 spinlock_t tim_lock; 1045 unsigned long num_sta; 1046 struct list_head sta_list; 1047 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1048 struct timer_list sta_cleanup; 1049 int sta_generation; 1050 1051 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1052 struct tasklet_struct tx_pending_tasklet; 1053 1054 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1055 1056 /* number of interfaces with corresponding IFF_ flags */ 1057 atomic_t iff_allmultis, iff_promiscs; 1058 1059 struct rate_control_ref *rate_ctrl; 1060 1061 struct crypto_cipher *wep_tx_tfm; 1062 struct crypto_cipher *wep_rx_tfm; 1063 u32 wep_iv; 1064 1065 /* see iface.c */ 1066 struct list_head interfaces; 1067 struct mutex iflist_mtx; 1068 1069 /* 1070 * Key mutex, protects sdata's key_list and sta_info's 1071 * key pointers (write access, they're RCU.) 1072 */ 1073 struct mutex key_mtx; 1074 1075 /* mutex for scan and work locking */ 1076 struct mutex mtx; 1077 1078 /* Scanning and BSS list */ 1079 unsigned long scanning; 1080 struct cfg80211_ssid scan_ssid; 1081 struct cfg80211_scan_request *int_scan_req; 1082 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1083 struct cfg80211_chan_def scan_chandef; 1084 enum ieee80211_band hw_scan_band; 1085 int scan_channel_idx; 1086 int scan_ies_len; 1087 int hw_scan_ies_bufsize; 1088 1089 struct work_struct sched_scan_stopped_work; 1090 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1091 1092 unsigned long leave_oper_channel_time; 1093 enum mac80211_scan_state next_scan_state; 1094 struct delayed_work scan_work; 1095 struct ieee80211_sub_if_data __rcu *scan_sdata; 1096 struct cfg80211_chan_def csa_chandef; 1097 /* For backward compatibility only -- do not use */ 1098 struct cfg80211_chan_def _oper_chandef; 1099 1100 /* Temporary remain-on-channel for off-channel operations */ 1101 struct ieee80211_channel *tmp_channel; 1102 1103 /* channel contexts */ 1104 struct list_head chanctx_list; 1105 struct mutex chanctx_mtx; 1106 1107 /* SNMP counters */ 1108 /* dot11CountersTable */ 1109 u32 dot11TransmittedFragmentCount; 1110 u32 dot11MulticastTransmittedFrameCount; 1111 u32 dot11FailedCount; 1112 u32 dot11RetryCount; 1113 u32 dot11MultipleRetryCount; 1114 u32 dot11FrameDuplicateCount; 1115 u32 dot11ReceivedFragmentCount; 1116 u32 dot11MulticastReceivedFrameCount; 1117 u32 dot11TransmittedFrameCount; 1118 1119 #ifdef CONFIG_MAC80211_LEDS 1120 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1121 struct tpt_led_trigger *tpt_led_trigger; 1122 char tx_led_name[32], rx_led_name[32], 1123 assoc_led_name[32], radio_led_name[32]; 1124 #endif 1125 1126 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1127 /* TX/RX handler statistics */ 1128 unsigned int tx_handlers_drop; 1129 unsigned int tx_handlers_queued; 1130 unsigned int tx_handlers_drop_unencrypted; 1131 unsigned int tx_handlers_drop_fragment; 1132 unsigned int tx_handlers_drop_wep; 1133 unsigned int tx_handlers_drop_not_assoc; 1134 unsigned int tx_handlers_drop_unauth_port; 1135 unsigned int rx_handlers_drop; 1136 unsigned int rx_handlers_queued; 1137 unsigned int rx_handlers_drop_nullfunc; 1138 unsigned int rx_handlers_drop_defrag; 1139 unsigned int rx_handlers_drop_short; 1140 unsigned int tx_expand_skb_head; 1141 unsigned int tx_expand_skb_head_cloned; 1142 unsigned int rx_expand_skb_head; 1143 unsigned int rx_expand_skb_head2; 1144 unsigned int rx_handlers_fragments; 1145 unsigned int tx_status_drop; 1146 #define I802_DEBUG_INC(c) (c)++ 1147 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1148 #define I802_DEBUG_INC(c) do { } while (0) 1149 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1150 1151 1152 int total_ps_buffered; /* total number of all buffered unicast and 1153 * multicast packets for power saving stations 1154 */ 1155 1156 bool pspolling; 1157 bool offchannel_ps_enabled; 1158 /* 1159 * PS can only be enabled when we have exactly one managed 1160 * interface (and monitors) in PS, this then points there. 1161 */ 1162 struct ieee80211_sub_if_data *ps_sdata; 1163 struct work_struct dynamic_ps_enable_work; 1164 struct work_struct dynamic_ps_disable_work; 1165 struct timer_list dynamic_ps_timer; 1166 struct notifier_block network_latency_notifier; 1167 struct notifier_block ifa_notifier; 1168 struct notifier_block ifa6_notifier; 1169 1170 /* 1171 * The dynamic ps timeout configured from user space via WEXT - 1172 * this will override whatever chosen by mac80211 internally. 1173 */ 1174 int dynamic_ps_forced_timeout; 1175 1176 int user_power_level; /* in dBm, for all interfaces */ 1177 1178 enum ieee80211_smps_mode smps_mode; 1179 1180 struct work_struct restart_work; 1181 1182 #ifdef CONFIG_MAC80211_DEBUGFS 1183 struct local_debugfsdentries { 1184 struct dentry *rcdir; 1185 struct dentry *keys; 1186 } debugfs; 1187 #endif 1188 1189 /* 1190 * Remain-on-channel support 1191 */ 1192 struct list_head roc_list; 1193 struct work_struct hw_roc_start, hw_roc_done; 1194 unsigned long hw_roc_start_time; 1195 u64 roc_cookie_counter; 1196 1197 struct idr ack_status_frames; 1198 spinlock_t ack_status_lock; 1199 1200 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1201 1202 /* virtual monitor interface */ 1203 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1204 struct cfg80211_chan_def monitor_chandef; 1205 }; 1206 1207 static inline struct ieee80211_sub_if_data * 1208 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1209 { 1210 return netdev_priv(dev); 1211 } 1212 1213 static inline struct ieee80211_sub_if_data * 1214 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1215 { 1216 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1217 } 1218 1219 /* this struct represents 802.11n's RA/TID combination */ 1220 struct ieee80211_ra_tid { 1221 u8 ra[ETH_ALEN]; 1222 u16 tid; 1223 }; 1224 1225 /* this struct holds the value parsing from channel switch IE */ 1226 struct ieee80211_csa_ie { 1227 struct cfg80211_chan_def chandef; 1228 u8 mode; 1229 u8 count; 1230 u8 ttl; 1231 u16 pre_value; 1232 }; 1233 1234 /* Parsed Information Elements */ 1235 struct ieee802_11_elems { 1236 const u8 *ie_start; 1237 size_t total_len; 1238 1239 /* pointers to IEs */ 1240 const u8 *ssid; 1241 const u8 *supp_rates; 1242 const u8 *ds_params; 1243 const struct ieee80211_tim_ie *tim; 1244 const u8 *challenge; 1245 const u8 *rsn; 1246 const u8 *erp_info; 1247 const u8 *ext_supp_rates; 1248 const u8 *wmm_info; 1249 const u8 *wmm_param; 1250 const struct ieee80211_ht_cap *ht_cap_elem; 1251 const struct ieee80211_ht_operation *ht_operation; 1252 const struct ieee80211_vht_cap *vht_cap_elem; 1253 const struct ieee80211_vht_operation *vht_operation; 1254 const struct ieee80211_meshconf_ie *mesh_config; 1255 const u8 *mesh_id; 1256 const u8 *peering; 1257 const __le16 *awake_window; 1258 const u8 *preq; 1259 const u8 *prep; 1260 const u8 *perr; 1261 const struct ieee80211_rann_ie *rann; 1262 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1263 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1264 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1265 const u8 *country_elem; 1266 const u8 *pwr_constr_elem; 1267 const struct ieee80211_timeout_interval_ie *timeout_int; 1268 const u8 *opmode_notif; 1269 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1270 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1271 1272 /* length of them, respectively */ 1273 u8 ssid_len; 1274 u8 supp_rates_len; 1275 u8 tim_len; 1276 u8 challenge_len; 1277 u8 rsn_len; 1278 u8 ext_supp_rates_len; 1279 u8 wmm_info_len; 1280 u8 wmm_param_len; 1281 u8 mesh_id_len; 1282 u8 peering_len; 1283 u8 preq_len; 1284 u8 prep_len; 1285 u8 perr_len; 1286 u8 country_elem_len; 1287 1288 /* whether a parse error occurred while retrieving these elements */ 1289 bool parse_error; 1290 }; 1291 1292 static inline struct ieee80211_local *hw_to_local( 1293 struct ieee80211_hw *hw) 1294 { 1295 return container_of(hw, struct ieee80211_local, hw); 1296 } 1297 1298 1299 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1300 { 1301 return ether_addr_equal(raddr, addr) || 1302 is_broadcast_ether_addr(raddr); 1303 } 1304 1305 static inline bool 1306 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1307 { 1308 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1309 status->flag & RX_FLAG_MACTIME_END); 1310 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1311 } 1312 1313 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1314 struct ieee80211_rx_status *status, 1315 unsigned int mpdu_len, 1316 unsigned int mpdu_offset); 1317 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1318 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1319 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1320 u32 changed); 1321 void ieee80211_configure_filter(struct ieee80211_local *local); 1322 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1323 1324 /* STA code */ 1325 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1326 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1327 struct cfg80211_auth_request *req); 1328 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1329 struct cfg80211_assoc_request *req); 1330 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1331 struct cfg80211_deauth_request *req); 1332 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1333 struct cfg80211_disassoc_request *req); 1334 void ieee80211_send_pspoll(struct ieee80211_local *local, 1335 struct ieee80211_sub_if_data *sdata); 1336 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1337 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1338 int ieee80211_max_network_latency(struct notifier_block *nb, 1339 unsigned long data, void *dummy); 1340 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1341 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1342 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1343 struct sk_buff *skb); 1344 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1345 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1346 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1347 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1348 __le16 fc, bool acked); 1349 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1350 1351 /* IBSS code */ 1352 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1353 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1354 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1355 const u8 *bssid, const u8 *addr, u32 supp_rates); 1356 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1357 struct cfg80211_ibss_params *params); 1358 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1359 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1360 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1361 struct sk_buff *skb); 1362 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1363 struct cfg80211_csa_settings *csa_settings); 1364 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1365 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1366 1367 /* mesh code */ 1368 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1369 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1370 struct sk_buff *skb); 1371 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1372 struct cfg80211_csa_settings *csa_settings, 1373 bool csa_action); 1374 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1375 1376 /* scan/BSS handling */ 1377 void ieee80211_scan_work(struct work_struct *work); 1378 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1379 const u8 *ssid, u8 ssid_len, 1380 struct ieee80211_channel *chan, 1381 enum nl80211_bss_scan_width scan_width); 1382 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1383 struct cfg80211_scan_request *req); 1384 void ieee80211_scan_cancel(struct ieee80211_local *local); 1385 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1386 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1387 1388 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1389 struct ieee80211_bss * 1390 ieee80211_bss_info_update(struct ieee80211_local *local, 1391 struct ieee80211_rx_status *rx_status, 1392 struct ieee80211_mgmt *mgmt, 1393 size_t len, 1394 struct ieee802_11_elems *elems, 1395 struct ieee80211_channel *channel); 1396 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1397 struct ieee80211_bss *bss); 1398 1399 /* scheduled scan handling */ 1400 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1401 struct cfg80211_sched_scan_request *req); 1402 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1403 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1404 1405 /* off-channel helpers */ 1406 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1407 void ieee80211_offchannel_return(struct ieee80211_local *local); 1408 void ieee80211_roc_setup(struct ieee80211_local *local); 1409 void ieee80211_start_next_roc(struct ieee80211_local *local); 1410 void ieee80211_roc_purge(struct ieee80211_local *local, 1411 struct ieee80211_sub_if_data *sdata); 1412 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1413 void ieee80211_sw_roc_work(struct work_struct *work); 1414 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1415 1416 /* channel switch handling */ 1417 void ieee80211_csa_finalize_work(struct work_struct *work); 1418 1419 /* interface handling */ 1420 int ieee80211_iface_init(void); 1421 void ieee80211_iface_exit(void); 1422 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1423 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1424 struct vif_params *params); 1425 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1426 enum nl80211_iftype type); 1427 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1428 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1429 u32 ieee80211_idle_off(struct ieee80211_local *local); 1430 void ieee80211_recalc_idle(struct ieee80211_local *local); 1431 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1432 const int offset); 1433 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1434 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1435 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1436 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1437 1438 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1439 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1440 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 1441 struct cfg80211_beacon_data *params); 1442 1443 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1444 { 1445 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1446 } 1447 1448 /* tx handling */ 1449 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1450 void ieee80211_tx_pending(unsigned long data); 1451 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1452 struct net_device *dev); 1453 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1454 struct net_device *dev); 1455 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1456 struct sk_buff_head *skbs); 1457 1458 /* HT */ 1459 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1460 struct ieee80211_sta_ht_cap *ht_cap); 1461 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1462 struct ieee80211_supported_band *sband, 1463 const struct ieee80211_ht_cap *ht_cap_ie, 1464 struct sta_info *sta); 1465 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1466 const u8 *da, u16 tid, 1467 u16 initiator, u16 reason_code); 1468 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1469 enum ieee80211_smps_mode smps, const u8 *da, 1470 const u8 *bssid); 1471 void ieee80211_request_smps_ap_work(struct work_struct *work); 1472 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1473 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1474 enum ieee80211_smps_mode smps_mode_new); 1475 1476 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1477 u16 initiator, u16 reason, bool stop); 1478 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1479 u16 initiator, u16 reason, bool stop); 1480 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1481 enum ieee80211_agg_stop_reason reason); 1482 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1483 struct sta_info *sta, 1484 struct ieee80211_mgmt *mgmt, size_t len); 1485 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1486 struct sta_info *sta, 1487 struct ieee80211_mgmt *mgmt, 1488 size_t len); 1489 void ieee80211_process_addba_request(struct ieee80211_local *local, 1490 struct sta_info *sta, 1491 struct ieee80211_mgmt *mgmt, 1492 size_t len); 1493 1494 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1495 enum ieee80211_agg_stop_reason reason); 1496 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1497 enum ieee80211_agg_stop_reason reason); 1498 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1499 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1500 void ieee80211_ba_session_work(struct work_struct *work); 1501 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1502 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1503 1504 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1505 1506 /* VHT */ 1507 void 1508 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1509 struct ieee80211_supported_band *sband, 1510 const struct ieee80211_vht_cap *vht_cap_ie, 1511 struct sta_info *sta); 1512 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1513 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1514 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1515 struct sta_info *sta, u8 opmode, 1516 enum ieee80211_band band, bool nss_only); 1517 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1518 struct ieee80211_sta_vht_cap *vht_cap); 1519 1520 /* Spectrum management */ 1521 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1522 struct ieee80211_mgmt *mgmt, 1523 size_t len); 1524 /** 1525 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1526 * @sdata: the sdata of the interface which has received the frame 1527 * @elems: parsed 802.11 elements received with the frame 1528 * @beacon: indicates if the frame was a beacon or probe response 1529 * @current_band: indicates the current band 1530 * @sta_flags: contains information about own capabilities and restrictions 1531 * to decide which channel switch announcements can be accepted. Only the 1532 * following subset of &enum ieee80211_sta_flags are evaluated: 1533 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1534 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1535 * %IEEE80211_STA_DISABLE_160MHZ. 1536 * @bssid: the currently connected bssid (for reporting) 1537 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1538 All of them will be filled with if success only. 1539 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1540 */ 1541 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1542 struct ieee802_11_elems *elems, bool beacon, 1543 enum ieee80211_band current_band, 1544 u32 sta_flags, u8 *bssid, 1545 struct ieee80211_csa_ie *csa_ie); 1546 1547 /* Suspend/resume and hw reconfiguration */ 1548 int ieee80211_reconfig(struct ieee80211_local *local); 1549 void ieee80211_stop_device(struct ieee80211_local *local); 1550 1551 int __ieee80211_suspend(struct ieee80211_hw *hw, 1552 struct cfg80211_wowlan *wowlan); 1553 1554 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1555 { 1556 struct ieee80211_local *local = hw_to_local(hw); 1557 1558 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1559 "%s: resume with hardware scan still in progress\n", 1560 wiphy_name(hw->wiphy)); 1561 1562 return ieee80211_reconfig(hw_to_local(hw)); 1563 } 1564 1565 /* utility functions/constants */ 1566 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1567 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1568 enum nl80211_iftype type); 1569 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1570 int rate, int erp, int short_preamble, 1571 int shift); 1572 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1573 struct ieee80211_hdr *hdr, const u8 *tsc, 1574 gfp_t gfp); 1575 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1576 bool bss_notify); 1577 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1578 enum ieee80211_band band); 1579 1580 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1581 struct sk_buff *skb, int tid, 1582 enum ieee80211_band band); 1583 1584 static inline void 1585 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1586 struct sk_buff *skb, int tid, 1587 enum ieee80211_band band) 1588 { 1589 rcu_read_lock(); 1590 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1591 rcu_read_unlock(); 1592 } 1593 1594 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1595 struct sk_buff *skb, int tid) 1596 { 1597 struct ieee80211_chanctx_conf *chanctx_conf; 1598 1599 rcu_read_lock(); 1600 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1601 if (WARN_ON(!chanctx_conf)) { 1602 rcu_read_unlock(); 1603 kfree_skb(skb); 1604 return; 1605 } 1606 1607 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1608 chanctx_conf->def.chan->band); 1609 rcu_read_unlock(); 1610 } 1611 1612 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1613 struct sk_buff *skb) 1614 { 1615 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1616 ieee80211_tx_skb_tid(sdata, skb, 7); 1617 } 1618 1619 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1620 struct ieee802_11_elems *elems, 1621 u64 filter, u32 crc); 1622 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1623 bool action, 1624 struct ieee802_11_elems *elems) 1625 { 1626 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1627 } 1628 1629 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1630 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1631 void ieee80211_dynamic_ps_timer(unsigned long data); 1632 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1633 struct ieee80211_sub_if_data *sdata, 1634 int powersave); 1635 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1636 struct ieee80211_hdr *hdr); 1637 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1638 struct ieee80211_hdr *hdr, bool ack); 1639 1640 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1641 unsigned long queues, 1642 enum queue_stop_reason reason); 1643 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1644 unsigned long queues, 1645 enum queue_stop_reason reason); 1646 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1647 enum queue_stop_reason reason); 1648 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1649 enum queue_stop_reason reason); 1650 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1651 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1652 struct sk_buff *skb); 1653 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1654 struct sk_buff_head *skbs, 1655 void (*fn)(void *data), void *data); 1656 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1657 struct sk_buff_head *skbs) 1658 { 1659 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1660 } 1661 void ieee80211_flush_queues(struct ieee80211_local *local, 1662 struct ieee80211_sub_if_data *sdata); 1663 1664 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1665 u16 transaction, u16 auth_alg, u16 status, 1666 const u8 *extra, size_t extra_len, const u8 *bssid, 1667 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1668 u32 tx_flags); 1669 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1670 const u8 *bssid, u16 stype, u16 reason, 1671 bool send_frame, u8 *frame_buf); 1672 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1673 size_t buffer_len, const u8 *ie, size_t ie_len, 1674 enum ieee80211_band band, u32 rate_mask, 1675 struct cfg80211_chan_def *chandef); 1676 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1677 u8 *dst, u32 ratemask, 1678 struct ieee80211_channel *chan, 1679 const u8 *ssid, size_t ssid_len, 1680 const u8 *ie, size_t ie_len, 1681 bool directed); 1682 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1683 const u8 *ssid, size_t ssid_len, 1684 const u8 *ie, size_t ie_len, 1685 u32 ratemask, bool directed, u32 tx_flags, 1686 struct ieee80211_channel *channel, bool scan); 1687 1688 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1689 struct ieee802_11_elems *elems, 1690 enum ieee80211_band band, u32 *basic_rates); 1691 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1692 enum ieee80211_smps_mode smps_mode); 1693 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1694 enum ieee80211_smps_mode smps_mode); 1695 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1696 1697 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1698 const u8 *ids, int n_ids, size_t offset); 1699 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1700 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1701 u16 cap); 1702 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1703 const struct cfg80211_chan_def *chandef, 1704 u16 prot_mode); 1705 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1706 u32 cap); 1707 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1708 const struct ieee80211_supported_band *sband, 1709 const u8 *srates, int srates_len, u32 *rates); 1710 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1711 struct sk_buff *skb, bool need_basic, 1712 enum ieee80211_band band); 1713 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1714 struct sk_buff *skb, bool need_basic, 1715 enum ieee80211_band band); 1716 1717 /* channel management */ 1718 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1719 const struct ieee80211_ht_operation *ht_oper, 1720 struct cfg80211_chan_def *chandef); 1721 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1722 1723 int __must_check 1724 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1725 const struct cfg80211_chan_def *chandef, 1726 enum ieee80211_chanctx_mode mode); 1727 int __must_check 1728 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1729 const struct cfg80211_chan_def *chandef, 1730 u32 *changed); 1731 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */ 1732 int __must_check 1733 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata, 1734 const struct cfg80211_chan_def *chandef, 1735 u32 *changed); 1736 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1737 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1738 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1739 bool clear); 1740 1741 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1742 struct ieee80211_chanctx *chanctx); 1743 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, 1744 struct ieee80211_chanctx *chanctx); 1745 1746 void ieee80211_dfs_cac_timer(unsigned long data); 1747 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1748 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1749 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1750 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 1751 struct cfg80211_csa_settings *csa_settings); 1752 1753 #ifdef CONFIG_MAC80211_NOINLINE 1754 #define debug_noinline noinline 1755 #else 1756 #define debug_noinline 1757 #endif 1758 1759 #endif /* IEEE80211_I_H */ 1760