1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2002-2005, Instant802 Networks, Inc. 4 * Copyright 2005, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2015 Intel Mobile Communications GmbH 8 * Copyright (C) 2018-2020 Intel Corporation 9 */ 10 11 #ifndef IEEE80211_I_H 12 #define IEEE80211_I_H 13 14 #include <linux/kernel.h> 15 #include <linux/device.h> 16 #include <linux/if_ether.h> 17 #include <linux/interrupt.h> 18 #include <linux/list.h> 19 #include <linux/netdevice.h> 20 #include <linux/skbuff.h> 21 #include <linux/workqueue.h> 22 #include <linux/types.h> 23 #include <linux/spinlock.h> 24 #include <linux/etherdevice.h> 25 #include <linux/leds.h> 26 #include <linux/idr.h> 27 #include <linux/rhashtable.h> 28 #include <net/ieee80211_radiotap.h> 29 #include <net/cfg80211.h> 30 #include <net/mac80211.h> 31 #include <net/fq.h> 32 #include "key.h" 33 #include "sta_info.h" 34 #include "debug.h" 35 36 extern const struct cfg80211_ops mac80211_config_ops; 37 38 struct ieee80211_local; 39 40 /* Maximum number of broadcast/multicast frames to buffer when some of the 41 * associated stations are using power saving. */ 42 #define AP_MAX_BC_BUFFER 128 43 44 /* Maximum number of frames buffered to all STAs, including multicast frames. 45 * Note: increasing this limit increases the potential memory requirement. Each 46 * frame can be up to about 2 kB long. */ 47 #define TOTAL_MAX_TX_BUFFER 512 48 49 /* Required encryption head and tailroom */ 50 #define IEEE80211_ENCRYPT_HEADROOM 8 51 #define IEEE80211_ENCRYPT_TAILROOM 18 52 53 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 54 * reception of at least three fragmented frames. This limit can be increased 55 * by changing this define, at the cost of slower frame reassembly and 56 * increased memory use (about 2 kB of RAM per entry). */ 57 #define IEEE80211_FRAGMENT_MAX 4 58 59 /* power level hasn't been configured (or set to automatic) */ 60 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 61 62 /* 63 * Some APs experience problems when working with U-APSD. Decreasing the 64 * probability of that happening by using legacy mode for all ACs but VO isn't 65 * enough. 66 * 67 * Cisco 4410N originally forced us to enable VO by default only because it 68 * treated non-VO ACs as legacy. 69 * 70 * However some APs (notably Netgear R7000) silently reclassify packets to 71 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 72 * clients would never see some frames (e.g. ARP responses) or would fetch them 73 * accidentally after a long time. 74 * 75 * It makes little sense to enable u-APSD queues by default because it needs 76 * userspace applications to be aware of it to actually take advantage of the 77 * possible additional powersavings. Implicitly depending on driver autotrigger 78 * frame support doesn't make much sense. 79 */ 80 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 81 82 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 83 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 84 85 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 86 87 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 88 89 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 90 91 struct ieee80211_fragment_entry { 92 struct sk_buff_head skb_list; 93 unsigned long first_frag_time; 94 u16 seq; 95 u16 extra_len; 96 u16 last_frag; 97 u8 rx_queue; 98 bool check_sequential_pn; /* needed for CCMP/GCMP */ 99 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 100 }; 101 102 103 struct ieee80211_bss { 104 u32 device_ts_beacon, device_ts_presp; 105 106 bool wmm_used; 107 bool uapsd_supported; 108 109 #define IEEE80211_MAX_SUPP_RATES 32 110 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 111 size_t supp_rates_len; 112 struct ieee80211_rate *beacon_rate; 113 114 u32 vht_cap_info; 115 116 /* 117 * During association, we save an ERP value from a probe response so 118 * that we can feed ERP info to the driver when handling the 119 * association completes. these fields probably won't be up-to-date 120 * otherwise, you probably don't want to use them. 121 */ 122 bool has_erp_value; 123 u8 erp_value; 124 125 /* Keep track of the corruption of the last beacon/probe response. */ 126 u8 corrupt_data; 127 128 /* Keep track of what bits of information we have valid info for. */ 129 u8 valid_data; 130 }; 131 132 /** 133 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 134 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 135 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 136 * 137 * These are bss flags that are attached to a bss in the 138 * @corrupt_data field of &struct ieee80211_bss. 139 */ 140 enum ieee80211_bss_corrupt_data_flags { 141 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 142 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 143 }; 144 145 /** 146 * enum ieee80211_valid_data_flags - BSS valid data flags 147 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 148 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 149 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 150 * 151 * These are bss flags that are attached to a bss in the 152 * @valid_data field of &struct ieee80211_bss. They show which parts 153 * of the data structure were received as a result of an un-corrupted 154 * beacon/probe response. 155 */ 156 enum ieee80211_bss_valid_data_flags { 157 IEEE80211_BSS_VALID_WMM = BIT(1), 158 IEEE80211_BSS_VALID_RATES = BIT(2), 159 IEEE80211_BSS_VALID_ERP = BIT(3) 160 }; 161 162 typedef unsigned __bitwise ieee80211_tx_result; 163 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 164 #define TX_DROP ((__force ieee80211_tx_result) 1u) 165 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 166 167 #define IEEE80211_TX_UNICAST BIT(1) 168 #define IEEE80211_TX_PS_BUFFERED BIT(2) 169 170 struct ieee80211_tx_data { 171 struct sk_buff *skb; 172 struct sk_buff_head skbs; 173 struct ieee80211_local *local; 174 struct ieee80211_sub_if_data *sdata; 175 struct sta_info *sta; 176 struct ieee80211_key *key; 177 struct ieee80211_tx_rate rate; 178 179 unsigned int flags; 180 }; 181 182 183 typedef unsigned __bitwise ieee80211_rx_result; 184 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 185 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 186 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 187 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 188 189 /** 190 * enum ieee80211_packet_rx_flags - packet RX flags 191 * @IEEE80211_RX_AMSDU: a-MSDU packet 192 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 193 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 194 * 195 * These are per-frame flags that are attached to a frame in the 196 * @rx_flags field of &struct ieee80211_rx_status. 197 */ 198 enum ieee80211_packet_rx_flags { 199 IEEE80211_RX_AMSDU = BIT(3), 200 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 201 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 202 }; 203 204 /** 205 * enum ieee80211_rx_flags - RX data flags 206 * 207 * @IEEE80211_RX_CMNTR: received on cooked monitor already 208 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 209 * to cfg80211_report_obss_beacon(). 210 * 211 * These flags are used across handling multiple interfaces 212 * for a single frame. 213 */ 214 enum ieee80211_rx_flags { 215 IEEE80211_RX_CMNTR = BIT(0), 216 IEEE80211_RX_BEACON_REPORTED = BIT(1), 217 }; 218 219 struct ieee80211_rx_data { 220 struct list_head *list; 221 struct sk_buff *skb; 222 struct ieee80211_local *local; 223 struct ieee80211_sub_if_data *sdata; 224 struct sta_info *sta; 225 struct ieee80211_key *key; 226 227 unsigned int flags; 228 229 /* 230 * Index into sequence numbers array, 0..16 231 * since the last (16) is used for non-QoS, 232 * will be 16 on non-QoS frames. 233 */ 234 int seqno_idx; 235 236 /* 237 * Index into the security IV/PN arrays, 0..16 238 * since the last (16) is used for CCMP-encrypted 239 * management frames, will be set to 16 on mgmt 240 * frames and 0 on non-QoS frames. 241 */ 242 int security_idx; 243 244 u32 tkip_iv32; 245 u16 tkip_iv16; 246 }; 247 248 struct ieee80211_csa_settings { 249 const u16 *counter_offsets_beacon; 250 const u16 *counter_offsets_presp; 251 252 int n_counter_offsets_beacon; 253 int n_counter_offsets_presp; 254 255 u8 count; 256 }; 257 258 struct beacon_data { 259 u8 *head, *tail; 260 int head_len, tail_len; 261 struct ieee80211_meshconf_ie *meshconf; 262 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 263 u8 csa_current_counter; 264 struct rcu_head rcu_head; 265 }; 266 267 struct probe_resp { 268 struct rcu_head rcu_head; 269 int len; 270 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 271 u8 data[]; 272 }; 273 274 struct ps_data { 275 /* yes, this looks ugly, but guarantees that we can later use 276 * bitmap_empty :) 277 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 278 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 279 __aligned(__alignof__(unsigned long)); 280 struct sk_buff_head bc_buf; 281 atomic_t num_sta_ps; /* number of stations in PS mode */ 282 int dtim_count; 283 bool dtim_bc_mc; 284 }; 285 286 struct ieee80211_if_ap { 287 struct beacon_data __rcu *beacon; 288 struct probe_resp __rcu *probe_resp; 289 290 /* to be used after channel switch. */ 291 struct cfg80211_beacon_data *next_beacon; 292 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 293 294 struct ps_data ps; 295 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 296 297 bool multicast_to_unicast; 298 }; 299 300 struct ieee80211_if_wds { 301 struct sta_info *sta; 302 u8 remote_addr[ETH_ALEN]; 303 }; 304 305 struct ieee80211_if_vlan { 306 struct list_head list; /* write-protected with RTNL and local->mtx */ 307 308 /* used for all tx if the VLAN is configured to 4-addr mode */ 309 struct sta_info __rcu *sta; 310 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 311 }; 312 313 struct mesh_stats { 314 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 315 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 316 __u32 fwded_frames; /* Mesh total forwarded frames */ 317 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 318 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 319 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 320 }; 321 322 #define PREQ_Q_F_START 0x1 323 #define PREQ_Q_F_REFRESH 0x2 324 struct mesh_preq_queue { 325 struct list_head list; 326 u8 dst[ETH_ALEN]; 327 u8 flags; 328 }; 329 330 struct ieee80211_roc_work { 331 struct list_head list; 332 333 struct ieee80211_sub_if_data *sdata; 334 335 struct ieee80211_channel *chan; 336 337 bool started, abort, hw_begun, notified; 338 bool on_channel; 339 340 unsigned long start_time; 341 342 u32 duration, req_duration; 343 struct sk_buff *frame; 344 u64 cookie, mgmt_tx_cookie; 345 enum ieee80211_roc_type type; 346 }; 347 348 /* flags used in struct ieee80211_if_managed.flags */ 349 enum ieee80211_sta_flags { 350 IEEE80211_STA_CONNECTION_POLL = BIT(1), 351 IEEE80211_STA_CONTROL_PORT = BIT(2), 352 IEEE80211_STA_DISABLE_HT = BIT(4), 353 IEEE80211_STA_MFP_ENABLED = BIT(6), 354 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 355 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 356 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 357 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 358 IEEE80211_STA_DISABLE_VHT = BIT(11), 359 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 360 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 361 IEEE80211_STA_DISABLE_WMM = BIT(14), 362 IEEE80211_STA_ENABLE_RRM = BIT(15), 363 IEEE80211_STA_DISABLE_HE = BIT(16), 364 }; 365 366 struct ieee80211_mgd_auth_data { 367 struct cfg80211_bss *bss; 368 unsigned long timeout; 369 int tries; 370 u16 algorithm, expected_transaction; 371 372 u8 key[WLAN_KEY_LEN_WEP104]; 373 u8 key_len, key_idx; 374 bool done; 375 bool peer_confirmed; 376 bool timeout_started; 377 378 u16 sae_trans, sae_status; 379 size_t data_len; 380 u8 data[]; 381 }; 382 383 struct ieee80211_mgd_assoc_data { 384 struct cfg80211_bss *bss; 385 const u8 *supp_rates; 386 387 unsigned long timeout; 388 int tries; 389 390 u16 capability; 391 u8 prev_bssid[ETH_ALEN]; 392 u8 ssid[IEEE80211_MAX_SSID_LEN]; 393 u8 ssid_len; 394 u8 supp_rates_len; 395 bool wmm, uapsd; 396 bool need_beacon; 397 bool synced; 398 bool timeout_started; 399 400 u8 ap_ht_param; 401 402 struct ieee80211_vht_cap ap_vht_cap; 403 404 u8 fils_nonces[2 * FILS_NONCE_LEN]; 405 u8 fils_kek[FILS_MAX_KEK_LEN]; 406 size_t fils_kek_len; 407 408 size_t ie_len; 409 u8 ie[]; 410 }; 411 412 struct ieee80211_sta_tx_tspec { 413 /* timestamp of the first packet in the time slice */ 414 unsigned long time_slice_start; 415 416 u32 admitted_time; /* in usecs, unlike over the air */ 417 u8 tsid; 418 s8 up; /* signed to be able to invalidate with -1 during teardown */ 419 420 /* consumed TX time in microseconds in the time slice */ 421 u32 consumed_tx_time; 422 enum { 423 TX_TSPEC_ACTION_NONE = 0, 424 TX_TSPEC_ACTION_DOWNGRADE, 425 TX_TSPEC_ACTION_STOP_DOWNGRADE, 426 } action; 427 bool downgraded; 428 }; 429 430 DECLARE_EWMA(beacon_signal, 4, 4) 431 432 struct ieee80211_if_managed { 433 struct timer_list timer; 434 struct timer_list conn_mon_timer; 435 struct timer_list bcn_mon_timer; 436 struct timer_list chswitch_timer; 437 struct work_struct monitor_work; 438 struct work_struct chswitch_work; 439 struct work_struct beacon_connection_loss_work; 440 struct work_struct csa_connection_drop_work; 441 442 unsigned long beacon_timeout; 443 unsigned long probe_timeout; 444 int probe_send_count; 445 bool nullfunc_failed; 446 bool connection_loss; 447 448 struct cfg80211_bss *associated; 449 struct ieee80211_mgd_auth_data *auth_data; 450 struct ieee80211_mgd_assoc_data *assoc_data; 451 452 u8 bssid[ETH_ALEN] __aligned(2); 453 454 bool powersave; /* powersave requested for this iface */ 455 bool broken_ap; /* AP is broken -- turn off powersave */ 456 bool have_beacon; 457 u8 dtim_period; 458 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 459 driver_smps_mode; /* smps mode request */ 460 461 struct work_struct request_smps_work; 462 463 unsigned int flags; 464 465 bool csa_waiting_bcn; 466 bool csa_ignored_same_chan; 467 468 bool beacon_crc_valid; 469 u32 beacon_crc; 470 471 bool status_acked; 472 bool status_received; 473 __le16 status_fc; 474 475 enum { 476 IEEE80211_MFP_DISABLED, 477 IEEE80211_MFP_OPTIONAL, 478 IEEE80211_MFP_REQUIRED 479 } mfp; /* management frame protection */ 480 481 /* 482 * Bitmask of enabled u-apsd queues, 483 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 484 * to take effect. 485 */ 486 unsigned int uapsd_queues; 487 488 /* 489 * Maximum number of buffered frames AP can deliver during a 490 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 491 * Needs a new association to take effect. 492 */ 493 unsigned int uapsd_max_sp_len; 494 495 int wmm_last_param_set; 496 int mu_edca_last_param_set; 497 498 u8 use_4addr; 499 500 s16 p2p_noa_index; 501 502 struct ewma_beacon_signal ave_beacon_signal; 503 504 /* 505 * Number of Beacon frames used in ave_beacon_signal. This can be used 506 * to avoid generating less reliable cqm events that would be based 507 * only on couple of received frames. 508 */ 509 unsigned int count_beacon_signal; 510 511 /* Number of times beacon loss was invoked. */ 512 unsigned int beacon_loss_count; 513 514 /* 515 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 516 * that triggered a cqm event. 0 indicates that no event has been 517 * generated for the current association. 518 */ 519 int last_cqm_event_signal; 520 521 /* 522 * State variables for keeping track of RSSI of the AP currently 523 * connected to and informing driver when RSSI has gone 524 * below/above a certain threshold. 525 */ 526 int rssi_min_thold, rssi_max_thold; 527 int last_ave_beacon_signal; 528 529 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 530 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 531 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 532 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 533 534 /* TDLS support */ 535 u8 tdls_peer[ETH_ALEN] __aligned(2); 536 struct delayed_work tdls_peer_del_work; 537 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 538 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 539 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 540 bool tdls_chan_switch_prohibited; 541 bool tdls_wider_bw_prohibited; 542 543 /* WMM-AC TSPEC support */ 544 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 545 /* Use a separate work struct so that we can do something here 546 * while the sdata->work is flushing the queues, for example. 547 * otherwise, in scenarios where we hardly get any traffic out 548 * on the BE queue, but there's a lot of VO traffic, we might 549 * get stuck in a downgraded situation and flush takes forever. 550 */ 551 struct delayed_work tx_tspec_wk; 552 553 /* Information elements from the last transmitted (Re)Association 554 * Request frame. 555 */ 556 u8 *assoc_req_ies; 557 size_t assoc_req_ies_len; 558 }; 559 560 struct ieee80211_if_ibss { 561 struct timer_list timer; 562 struct work_struct csa_connection_drop_work; 563 564 unsigned long last_scan_completed; 565 566 u32 basic_rates; 567 568 bool fixed_bssid; 569 bool fixed_channel; 570 bool privacy; 571 572 bool control_port; 573 bool userspace_handles_dfs; 574 575 u8 bssid[ETH_ALEN] __aligned(2); 576 u8 ssid[IEEE80211_MAX_SSID_LEN]; 577 u8 ssid_len, ie_len; 578 u8 *ie; 579 struct cfg80211_chan_def chandef; 580 581 unsigned long ibss_join_req; 582 /* probe response/beacon for IBSS */ 583 struct beacon_data __rcu *presp; 584 585 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 586 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 587 588 spinlock_t incomplete_lock; 589 struct list_head incomplete_stations; 590 591 enum { 592 IEEE80211_IBSS_MLME_SEARCH, 593 IEEE80211_IBSS_MLME_JOINED, 594 } state; 595 }; 596 597 /** 598 * struct ieee80211_if_ocb - OCB mode state 599 * 600 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 601 * @wrkq_flags: OCB deferred task action 602 * @incomplete_lock: delayed STA insertion lock 603 * @incomplete_stations: list of STAs waiting for delayed insertion 604 * @joined: indication if the interface is connected to an OCB network 605 */ 606 struct ieee80211_if_ocb { 607 struct timer_list housekeeping_timer; 608 unsigned long wrkq_flags; 609 610 spinlock_t incomplete_lock; 611 struct list_head incomplete_stations; 612 613 bool joined; 614 }; 615 616 /** 617 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 618 * 619 * these declarations define the interface, which enables 620 * vendor-specific mesh synchronization 621 * 622 */ 623 struct ieee802_11_elems; 624 struct ieee80211_mesh_sync_ops { 625 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 626 u16 stype, 627 struct ieee80211_mgmt *mgmt, 628 struct ieee802_11_elems *elems, 629 struct ieee80211_rx_status *rx_status); 630 631 /* should be called with beacon_data under RCU read lock */ 632 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 633 struct beacon_data *beacon); 634 /* add other framework functions here */ 635 }; 636 637 struct mesh_csa_settings { 638 struct rcu_head rcu_head; 639 struct cfg80211_csa_settings settings; 640 }; 641 642 struct ieee80211_if_mesh { 643 struct timer_list housekeeping_timer; 644 struct timer_list mesh_path_timer; 645 struct timer_list mesh_path_root_timer; 646 647 unsigned long wrkq_flags; 648 unsigned long mbss_changed; 649 650 bool userspace_handles_dfs; 651 652 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 653 size_t mesh_id_len; 654 /* Active Path Selection Protocol Identifier */ 655 u8 mesh_pp_id; 656 /* Active Path Selection Metric Identifier */ 657 u8 mesh_pm_id; 658 /* Congestion Control Mode Identifier */ 659 u8 mesh_cc_id; 660 /* Synchronization Protocol Identifier */ 661 u8 mesh_sp_id; 662 /* Authentication Protocol Identifier */ 663 u8 mesh_auth_id; 664 /* Local mesh Sequence Number */ 665 u32 sn; 666 /* Last used PREQ ID */ 667 u32 preq_id; 668 atomic_t mpaths; 669 /* Timestamp of last SN update */ 670 unsigned long last_sn_update; 671 /* Time when it's ok to send next PERR */ 672 unsigned long next_perr; 673 /* Timestamp of last PREQ sent */ 674 unsigned long last_preq; 675 struct mesh_rmc *rmc; 676 spinlock_t mesh_preq_queue_lock; 677 struct mesh_preq_queue preq_queue; 678 int preq_queue_len; 679 struct mesh_stats mshstats; 680 struct mesh_config mshcfg; 681 atomic_t estab_plinks; 682 u32 mesh_seqnum; 683 bool accepting_plinks; 684 int num_gates; 685 struct beacon_data __rcu *beacon; 686 const u8 *ie; 687 u8 ie_len; 688 enum { 689 IEEE80211_MESH_SEC_NONE = 0x0, 690 IEEE80211_MESH_SEC_AUTHED = 0x1, 691 IEEE80211_MESH_SEC_SECURED = 0x2, 692 } security; 693 bool user_mpm; 694 /* Extensible Synchronization Framework */ 695 const struct ieee80211_mesh_sync_ops *sync_ops; 696 s64 sync_offset_clockdrift_max; 697 spinlock_t sync_offset_lock; 698 /* mesh power save */ 699 enum nl80211_mesh_power_mode nonpeer_pm; 700 int ps_peers_light_sleep; 701 int ps_peers_deep_sleep; 702 struct ps_data ps; 703 /* Channel Switching Support */ 704 struct mesh_csa_settings __rcu *csa; 705 enum { 706 IEEE80211_MESH_CSA_ROLE_NONE, 707 IEEE80211_MESH_CSA_ROLE_INIT, 708 IEEE80211_MESH_CSA_ROLE_REPEATER, 709 } csa_role; 710 u8 chsw_ttl; 711 u16 pre_value; 712 713 /* offset from skb->data while building IE */ 714 int meshconf_offset; 715 716 struct mesh_table *mesh_paths; 717 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 718 int mesh_paths_generation; 719 int mpp_paths_generation; 720 }; 721 722 #ifdef CONFIG_MAC80211_MESH 723 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 724 do { (msh)->mshstats.name++; } while (0) 725 #else 726 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 727 do { } while (0) 728 #endif 729 730 /** 731 * enum ieee80211_sub_if_data_flags - virtual interface flags 732 * 733 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 734 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 735 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 736 * associated stations and deliver multicast frames both 737 * back to wireless media and to the local net stack. 738 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 739 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 740 */ 741 enum ieee80211_sub_if_data_flags { 742 IEEE80211_SDATA_ALLMULTI = BIT(0), 743 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 744 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 745 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 746 IEEE80211_SDATA_IN_DRIVER = BIT(5), 747 }; 748 749 /** 750 * enum ieee80211_sdata_state_bits - virtual interface state bits 751 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 752 * mirrors netif_running() but is separate for interface type 753 * change handling while the interface is up 754 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 755 * mode, so queues are stopped 756 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 757 * to offchannel, reset when offchannel returns 758 */ 759 enum ieee80211_sdata_state_bits { 760 SDATA_STATE_RUNNING, 761 SDATA_STATE_OFFCHANNEL, 762 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 763 }; 764 765 /** 766 * enum ieee80211_chanctx_mode - channel context configuration mode 767 * 768 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 769 * multiple interfaces 770 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 771 * only by a single interface. This can be used for example for 772 * non-fixed channel IBSS. 773 */ 774 enum ieee80211_chanctx_mode { 775 IEEE80211_CHANCTX_SHARED, 776 IEEE80211_CHANCTX_EXCLUSIVE 777 }; 778 779 /** 780 * enum ieee80211_chanctx_replace_state - channel context replacement state 781 * 782 * This is used for channel context in-place reservations that require channel 783 * context switch/swap. 784 * 785 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 786 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 787 * by a (not yet registered) channel context pointed by %replace_ctx. 788 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 789 * replaces an existing channel context pointed to by %replace_ctx. 790 */ 791 enum ieee80211_chanctx_replace_state { 792 IEEE80211_CHANCTX_REPLACE_NONE, 793 IEEE80211_CHANCTX_WILL_BE_REPLACED, 794 IEEE80211_CHANCTX_REPLACES_OTHER, 795 }; 796 797 struct ieee80211_chanctx { 798 struct list_head list; 799 struct rcu_head rcu_head; 800 801 struct list_head assigned_vifs; 802 struct list_head reserved_vifs; 803 804 enum ieee80211_chanctx_replace_state replace_state; 805 struct ieee80211_chanctx *replace_ctx; 806 807 enum ieee80211_chanctx_mode mode; 808 bool driver_present; 809 810 struct ieee80211_chanctx_conf conf; 811 }; 812 813 struct mac80211_qos_map { 814 struct cfg80211_qos_map qos_map; 815 struct rcu_head rcu_head; 816 }; 817 818 enum txq_info_flags { 819 IEEE80211_TXQ_STOP, 820 IEEE80211_TXQ_AMPDU, 821 IEEE80211_TXQ_NO_AMSDU, 822 IEEE80211_TXQ_STOP_NETIF_TX, 823 }; 824 825 /** 826 * struct txq_info - per tid queue 827 * 828 * @tin: contains packets split into multiple flows 829 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 830 * a fq_flow which is already owned by a different tin 831 * @def_cvars: codel vars for @def_flow 832 * @frags: used to keep fragments created after dequeue 833 * @schedule_order: used with ieee80211_local->active_txqs 834 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 835 */ 836 struct txq_info { 837 struct fq_tin tin; 838 struct fq_flow def_flow; 839 struct codel_vars def_cvars; 840 struct codel_stats cstats; 841 struct sk_buff_head frags; 842 struct list_head schedule_order; 843 u16 schedule_round; 844 unsigned long flags; 845 846 /* keep last! */ 847 struct ieee80211_txq txq; 848 }; 849 850 struct ieee80211_if_mntr { 851 u32 flags; 852 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 853 854 struct list_head list; 855 }; 856 857 /** 858 * struct ieee80211_if_nan - NAN state 859 * 860 * @conf: current NAN configuration 861 * @func_ids: a bitmap of available instance_id's 862 */ 863 struct ieee80211_if_nan { 864 struct cfg80211_nan_conf conf; 865 866 /* protects function_inst_ids */ 867 spinlock_t func_lock; 868 struct idr function_inst_ids; 869 }; 870 871 struct ieee80211_sub_if_data { 872 struct list_head list; 873 874 struct wireless_dev wdev; 875 876 /* keys */ 877 struct list_head key_list; 878 879 /* count for keys needing tailroom space allocation */ 880 int crypto_tx_tailroom_needed_cnt; 881 int crypto_tx_tailroom_pending_dec; 882 struct delayed_work dec_tailroom_needed_wk; 883 884 struct net_device *dev; 885 struct ieee80211_local *local; 886 887 unsigned int flags; 888 889 unsigned long state; 890 891 char name[IFNAMSIZ]; 892 893 /* Fragment table for host-based reassembly */ 894 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 895 unsigned int fragment_next; 896 897 /* TID bitmap for NoAck policy */ 898 u16 noack_map; 899 900 /* bit field of ACM bits (BIT(802.1D tag)) */ 901 u8 wmm_acm; 902 903 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + 904 NUM_DEFAULT_MGMT_KEYS + 905 NUM_DEFAULT_BEACON_KEYS]; 906 struct ieee80211_key __rcu *default_unicast_key; 907 struct ieee80211_key __rcu *default_multicast_key; 908 struct ieee80211_key __rcu *default_mgmt_key; 909 struct ieee80211_key __rcu *default_beacon_key; 910 911 u16 sequence_number; 912 __be16 control_port_protocol; 913 bool control_port_no_encrypt; 914 bool control_port_no_preauth; 915 bool control_port_over_nl80211; 916 int encrypt_headroom; 917 918 atomic_t num_tx_queued; 919 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 920 struct mac80211_qos_map __rcu *qos_map; 921 922 struct work_struct csa_finalize_work; 923 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 924 struct cfg80211_chan_def csa_chandef; 925 926 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 927 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 928 929 /* context reservation -- protected with chanctx_mtx */ 930 struct ieee80211_chanctx *reserved_chanctx; 931 struct cfg80211_chan_def reserved_chandef; 932 bool reserved_radar_required; 933 bool reserved_ready; 934 935 /* used to reconfigure hardware SM PS */ 936 struct work_struct recalc_smps; 937 938 struct work_struct work; 939 struct sk_buff_head skb_queue; 940 941 u8 needed_rx_chains; 942 enum ieee80211_smps_mode smps_mode; 943 944 int user_power_level; /* in dBm */ 945 int ap_power_level; /* in dBm */ 946 947 bool radar_required; 948 struct delayed_work dfs_cac_timer_work; 949 950 /* 951 * AP this belongs to: self in AP mode and 952 * corresponding AP in VLAN mode, NULL for 953 * all others (might be needed later in IBSS) 954 */ 955 struct ieee80211_if_ap *bss; 956 957 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 958 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 959 960 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 961 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 962 963 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 964 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 965 966 /* Beacon frame (non-MCS) rate (as a bitmap) */ 967 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 968 bool beacon_rate_set; 969 970 union { 971 struct ieee80211_if_ap ap; 972 struct ieee80211_if_wds wds; 973 struct ieee80211_if_vlan vlan; 974 struct ieee80211_if_managed mgd; 975 struct ieee80211_if_ibss ibss; 976 struct ieee80211_if_mesh mesh; 977 struct ieee80211_if_ocb ocb; 978 struct ieee80211_if_mntr mntr; 979 struct ieee80211_if_nan nan; 980 } u; 981 982 #ifdef CONFIG_MAC80211_DEBUGFS 983 struct { 984 struct dentry *subdir_stations; 985 struct dentry *default_unicast_key; 986 struct dentry *default_multicast_key; 987 struct dentry *default_mgmt_key; 988 struct dentry *default_beacon_key; 989 } debugfs; 990 #endif 991 992 bool hw_80211_encap; 993 994 /* must be last, dynamically sized area in this! */ 995 struct ieee80211_vif vif; 996 }; 997 998 static inline 999 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1000 { 1001 return container_of(p, struct ieee80211_sub_if_data, vif); 1002 } 1003 1004 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1005 __acquires(&sdata->wdev.mtx) 1006 { 1007 mutex_lock(&sdata->wdev.mtx); 1008 __acquire(&sdata->wdev.mtx); 1009 } 1010 1011 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1012 __releases(&sdata->wdev.mtx) 1013 { 1014 mutex_unlock(&sdata->wdev.mtx); 1015 __release(&sdata->wdev.mtx); 1016 } 1017 1018 #define sdata_dereference(p, sdata) \ 1019 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1020 1021 static inline void 1022 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1023 { 1024 lockdep_assert_held(&sdata->wdev.mtx); 1025 } 1026 1027 static inline int 1028 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1029 { 1030 switch (chandef->width) { 1031 case NL80211_CHAN_WIDTH_5: 1032 return 2; 1033 case NL80211_CHAN_WIDTH_10: 1034 return 1; 1035 default: 1036 return 0; 1037 } 1038 } 1039 1040 static inline int 1041 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1042 { 1043 struct ieee80211_chanctx_conf *chanctx_conf; 1044 int shift = 0; 1045 1046 rcu_read_lock(); 1047 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1048 if (chanctx_conf) 1049 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1050 rcu_read_unlock(); 1051 1052 return shift; 1053 } 1054 1055 enum { 1056 IEEE80211_RX_MSG = 1, 1057 IEEE80211_TX_STATUS_MSG = 2, 1058 }; 1059 1060 enum queue_stop_reason { 1061 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1062 IEEE80211_QUEUE_STOP_REASON_PS, 1063 IEEE80211_QUEUE_STOP_REASON_CSA, 1064 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1065 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1066 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1067 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1068 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1069 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1070 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1071 1072 IEEE80211_QUEUE_STOP_REASONS, 1073 }; 1074 1075 #ifdef CONFIG_MAC80211_LEDS 1076 struct tpt_led_trigger { 1077 char name[32]; 1078 const struct ieee80211_tpt_blink *blink_table; 1079 unsigned int blink_table_len; 1080 struct timer_list timer; 1081 struct ieee80211_local *local; 1082 unsigned long prev_traffic; 1083 unsigned long tx_bytes, rx_bytes; 1084 unsigned int active, want; 1085 bool running; 1086 }; 1087 #endif 1088 1089 /** 1090 * mac80211 scan flags - currently active scan mode 1091 * 1092 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1093 * well be on the operating channel 1094 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1095 * determine if we are on the operating channel or not 1096 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1097 * channel. This should not interrupt normal traffic. 1098 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1099 * that the scan completed. 1100 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1101 * a scan complete for an aborted scan. 1102 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1103 * cancelled. 1104 */ 1105 enum { 1106 SCAN_SW_SCANNING, 1107 SCAN_HW_SCANNING, 1108 SCAN_ONCHANNEL_SCANNING, 1109 SCAN_COMPLETED, 1110 SCAN_ABORTED, 1111 SCAN_HW_CANCELLED, 1112 }; 1113 1114 /** 1115 * enum mac80211_scan_state - scan state machine states 1116 * 1117 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1118 * determines if we should keep on scanning or switch back to the 1119 * operating channel 1120 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1121 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1122 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1123 * send out data 1124 * @SCAN_RESUME: Resume the scan and scan the next channel 1125 * @SCAN_ABORT: Abort the scan and go back to operating channel 1126 */ 1127 enum mac80211_scan_state { 1128 SCAN_DECISION, 1129 SCAN_SET_CHANNEL, 1130 SCAN_SEND_PROBE, 1131 SCAN_SUSPEND, 1132 SCAN_RESUME, 1133 SCAN_ABORT, 1134 }; 1135 1136 struct ieee80211_local { 1137 /* embed the driver visible part. 1138 * don't cast (use the static inlines below), but we keep 1139 * it first anyway so they become a no-op */ 1140 struct ieee80211_hw hw; 1141 1142 struct fq fq; 1143 struct codel_vars *cvars; 1144 struct codel_params cparams; 1145 1146 /* protects active_txqs and txqi->schedule_order */ 1147 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1148 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1149 u16 schedule_round[IEEE80211_NUM_ACS]; 1150 1151 u16 airtime_flags; 1152 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1153 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1154 u32 aql_threshold; 1155 atomic_t aql_total_pending_airtime; 1156 1157 const struct ieee80211_ops *ops; 1158 1159 /* 1160 * private workqueue to mac80211. mac80211 makes this accessible 1161 * via ieee80211_queue_work() 1162 */ 1163 struct workqueue_struct *workqueue; 1164 1165 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1166 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1167 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1168 spinlock_t queue_stop_reason_lock; 1169 1170 int open_count; 1171 int monitors, cooked_mntrs; 1172 /* number of interfaces with corresponding FIF_ flags */ 1173 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1174 fif_probe_req; 1175 bool probe_req_reg; 1176 bool rx_mcast_action_reg; 1177 unsigned int filter_flags; /* FIF_* */ 1178 1179 bool wiphy_ciphers_allocated; 1180 1181 bool use_chanctx; 1182 1183 /* protects the aggregated multicast list and filter calls */ 1184 spinlock_t filter_lock; 1185 1186 /* used for uploading changed mc list */ 1187 struct work_struct reconfig_filter; 1188 1189 /* aggregated multicast list */ 1190 struct netdev_hw_addr_list mc_list; 1191 1192 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1193 1194 /* 1195 * suspended is true if we finished all the suspend _and_ we have 1196 * not yet come up from resume. This is to be used by mac80211 1197 * to ensure driver sanity during suspend and mac80211's own 1198 * sanity. It can eventually be used for WoW as well. 1199 */ 1200 bool suspended; 1201 1202 /* 1203 * Resuming is true while suspended, but when we're reprogramming the 1204 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1205 * again even though some other parts of the stack are still suspended 1206 * and we still drop received frames to avoid waking the stack. 1207 */ 1208 bool resuming; 1209 1210 /* 1211 * quiescing is true during the suspend process _only_ to 1212 * ease timer cancelling etc. 1213 */ 1214 bool quiescing; 1215 1216 /* device is started */ 1217 bool started; 1218 1219 /* device is during a HW reconfig */ 1220 bool in_reconfig; 1221 1222 /* wowlan is enabled -- don't reconfig on resume */ 1223 bool wowlan; 1224 1225 struct work_struct radar_detected_work; 1226 1227 /* number of RX chains the hardware has */ 1228 u8 rx_chains; 1229 1230 /* bitmap of which sbands were copied */ 1231 u8 sband_allocated; 1232 1233 int tx_headroom; /* required headroom for hardware/radiotap */ 1234 1235 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1236 * added to skb_queue will be processed, but frames in 1237 * skb_queue_unreliable may be dropped if the total length of these 1238 * queues increases over the limit. */ 1239 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1240 struct tasklet_struct tasklet; 1241 struct sk_buff_head skb_queue; 1242 struct sk_buff_head skb_queue_unreliable; 1243 1244 spinlock_t rx_path_lock; 1245 1246 /* Station data */ 1247 /* 1248 * The mutex only protects the list, hash table and 1249 * counter, reads are done with RCU. 1250 */ 1251 struct mutex sta_mtx; 1252 spinlock_t tim_lock; 1253 unsigned long num_sta; 1254 struct list_head sta_list; 1255 struct rhltable sta_hash; 1256 struct timer_list sta_cleanup; 1257 int sta_generation; 1258 1259 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1260 struct tasklet_struct tx_pending_tasklet; 1261 struct tasklet_struct wake_txqs_tasklet; 1262 1263 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1264 1265 /* number of interfaces with allmulti RX */ 1266 atomic_t iff_allmultis; 1267 1268 struct rate_control_ref *rate_ctrl; 1269 1270 struct arc4_ctx wep_tx_ctx; 1271 struct arc4_ctx wep_rx_ctx; 1272 u32 wep_iv; 1273 1274 /* see iface.c */ 1275 struct list_head interfaces; 1276 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1277 struct mutex iflist_mtx; 1278 1279 /* 1280 * Key mutex, protects sdata's key_list and sta_info's 1281 * key pointers and ptk_idx (write access, they're RCU.) 1282 */ 1283 struct mutex key_mtx; 1284 1285 /* mutex for scan and work locking */ 1286 struct mutex mtx; 1287 1288 /* Scanning and BSS list */ 1289 unsigned long scanning; 1290 struct cfg80211_ssid scan_ssid; 1291 struct cfg80211_scan_request *int_scan_req; 1292 struct cfg80211_scan_request __rcu *scan_req; 1293 struct ieee80211_scan_request *hw_scan_req; 1294 struct cfg80211_chan_def scan_chandef; 1295 enum nl80211_band hw_scan_band; 1296 int scan_channel_idx; 1297 int scan_ies_len; 1298 int hw_scan_ies_bufsize; 1299 struct cfg80211_scan_info scan_info; 1300 1301 struct work_struct sched_scan_stopped_work; 1302 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1303 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1304 u8 scan_addr[ETH_ALEN]; 1305 1306 unsigned long leave_oper_channel_time; 1307 enum mac80211_scan_state next_scan_state; 1308 struct delayed_work scan_work; 1309 struct ieee80211_sub_if_data __rcu *scan_sdata; 1310 /* For backward compatibility only -- do not use */ 1311 struct cfg80211_chan_def _oper_chandef; 1312 1313 /* Temporary remain-on-channel for off-channel operations */ 1314 struct ieee80211_channel *tmp_channel; 1315 1316 /* channel contexts */ 1317 struct list_head chanctx_list; 1318 struct mutex chanctx_mtx; 1319 1320 #ifdef CONFIG_MAC80211_LEDS 1321 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1322 struct led_trigger tpt_led; 1323 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1324 atomic_t radio_led_active, tpt_led_active; 1325 struct tpt_led_trigger *tpt_led_trigger; 1326 #endif 1327 1328 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1329 /* SNMP counters */ 1330 /* dot11CountersTable */ 1331 u32 dot11TransmittedFragmentCount; 1332 u32 dot11MulticastTransmittedFrameCount; 1333 u32 dot11FailedCount; 1334 u32 dot11RetryCount; 1335 u32 dot11MultipleRetryCount; 1336 u32 dot11FrameDuplicateCount; 1337 u32 dot11ReceivedFragmentCount; 1338 u32 dot11MulticastReceivedFrameCount; 1339 u32 dot11TransmittedFrameCount; 1340 1341 /* TX/RX handler statistics */ 1342 unsigned int tx_handlers_drop; 1343 unsigned int tx_handlers_queued; 1344 unsigned int tx_handlers_drop_wep; 1345 unsigned int tx_handlers_drop_not_assoc; 1346 unsigned int tx_handlers_drop_unauth_port; 1347 unsigned int rx_handlers_drop; 1348 unsigned int rx_handlers_queued; 1349 unsigned int rx_handlers_drop_nullfunc; 1350 unsigned int rx_handlers_drop_defrag; 1351 unsigned int tx_expand_skb_head; 1352 unsigned int tx_expand_skb_head_cloned; 1353 unsigned int rx_expand_skb_head_defrag; 1354 unsigned int rx_handlers_fragments; 1355 unsigned int tx_status_drop; 1356 #define I802_DEBUG_INC(c) (c)++ 1357 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1358 #define I802_DEBUG_INC(c) do { } while (0) 1359 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1360 1361 1362 int total_ps_buffered; /* total number of all buffered unicast and 1363 * multicast packets for power saving stations 1364 */ 1365 1366 bool pspolling; 1367 bool offchannel_ps_enabled; 1368 /* 1369 * PS can only be enabled when we have exactly one managed 1370 * interface (and monitors) in PS, this then points there. 1371 */ 1372 struct ieee80211_sub_if_data *ps_sdata; 1373 struct work_struct dynamic_ps_enable_work; 1374 struct work_struct dynamic_ps_disable_work; 1375 struct timer_list dynamic_ps_timer; 1376 struct notifier_block ifa_notifier; 1377 struct notifier_block ifa6_notifier; 1378 1379 /* 1380 * The dynamic ps timeout configured from user space via WEXT - 1381 * this will override whatever chosen by mac80211 internally. 1382 */ 1383 int dynamic_ps_forced_timeout; 1384 1385 int user_power_level; /* in dBm, for all interfaces */ 1386 1387 enum ieee80211_smps_mode smps_mode; 1388 1389 struct work_struct restart_work; 1390 1391 #ifdef CONFIG_MAC80211_DEBUGFS 1392 struct local_debugfsdentries { 1393 struct dentry *rcdir; 1394 struct dentry *keys; 1395 } debugfs; 1396 bool force_tx_status; 1397 #endif 1398 1399 /* 1400 * Remain-on-channel support 1401 */ 1402 struct delayed_work roc_work; 1403 struct list_head roc_list; 1404 struct work_struct hw_roc_start, hw_roc_done; 1405 unsigned long hw_roc_start_time; 1406 u64 roc_cookie_counter; 1407 1408 struct idr ack_status_frames; 1409 spinlock_t ack_status_lock; 1410 1411 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1412 1413 /* virtual monitor interface */ 1414 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1415 struct cfg80211_chan_def monitor_chandef; 1416 1417 /* extended capabilities provided by mac80211 */ 1418 u8 ext_capa[8]; 1419 1420 /* TDLS channel switch */ 1421 struct work_struct tdls_chsw_work; 1422 struct sk_buff_head skb_queue_tdls_chsw; 1423 }; 1424 1425 static inline struct ieee80211_sub_if_data * 1426 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1427 { 1428 return netdev_priv(dev); 1429 } 1430 1431 static inline struct ieee80211_sub_if_data * 1432 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1433 { 1434 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1435 } 1436 1437 static inline struct ieee80211_supported_band * 1438 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1439 { 1440 struct ieee80211_local *local = sdata->local; 1441 struct ieee80211_chanctx_conf *chanctx_conf; 1442 enum nl80211_band band; 1443 1444 rcu_read_lock(); 1445 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1446 1447 if (WARN_ON_ONCE(!chanctx_conf)) { 1448 rcu_read_unlock(); 1449 return NULL; 1450 } 1451 1452 band = chanctx_conf->def.chan->band; 1453 rcu_read_unlock(); 1454 1455 return local->hw.wiphy->bands[band]; 1456 } 1457 1458 /* this struct holds the value parsing from channel switch IE */ 1459 struct ieee80211_csa_ie { 1460 struct cfg80211_chan_def chandef; 1461 u8 mode; 1462 u8 count; 1463 u8 ttl; 1464 u16 pre_value; 1465 u16 reason_code; 1466 u32 max_switch_time; 1467 }; 1468 1469 /* Parsed Information Elements */ 1470 struct ieee802_11_elems { 1471 const u8 *ie_start; 1472 size_t total_len; 1473 1474 /* pointers to IEs */ 1475 const struct ieee80211_tdls_lnkie *lnk_id; 1476 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1477 const u8 *ext_capab; 1478 const u8 *ssid; 1479 const u8 *supp_rates; 1480 const u8 *ds_params; 1481 const struct ieee80211_tim_ie *tim; 1482 const u8 *challenge; 1483 const u8 *rsn; 1484 const u8 *rsnx; 1485 const u8 *erp_info; 1486 const u8 *ext_supp_rates; 1487 const u8 *wmm_info; 1488 const u8 *wmm_param; 1489 const struct ieee80211_ht_cap *ht_cap_elem; 1490 const struct ieee80211_ht_operation *ht_operation; 1491 const struct ieee80211_vht_cap *vht_cap_elem; 1492 const struct ieee80211_vht_operation *vht_operation; 1493 const struct ieee80211_meshconf_ie *mesh_config; 1494 const u8 *he_cap; 1495 const struct ieee80211_he_operation *he_operation; 1496 const struct ieee80211_he_spr *he_spr; 1497 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1498 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1499 const u8 *uora_element; 1500 const u8 *mesh_id; 1501 const u8 *peering; 1502 const __le16 *awake_window; 1503 const u8 *preq; 1504 const u8 *prep; 1505 const u8 *perr; 1506 const struct ieee80211_rann_ie *rann; 1507 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1508 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1509 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1510 const u8 *max_channel_switch_time; 1511 const u8 *country_elem; 1512 const u8 *pwr_constr_elem; 1513 const u8 *cisco_dtpc_elem; 1514 const struct ieee80211_timeout_interval_ie *timeout_int; 1515 const u8 *opmode_notif; 1516 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1517 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1518 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1519 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1520 const struct ieee80211_bssid_index *bssid_index; 1521 u8 max_bssid_indicator; 1522 u8 dtim_count; 1523 u8 dtim_period; 1524 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1525 1526 /* length of them, respectively */ 1527 u8 ext_capab_len; 1528 u8 ssid_len; 1529 u8 supp_rates_len; 1530 u8 tim_len; 1531 u8 challenge_len; 1532 u8 rsn_len; 1533 u8 rsnx_len; 1534 u8 ext_supp_rates_len; 1535 u8 wmm_info_len; 1536 u8 wmm_param_len; 1537 u8 he_cap_len; 1538 u8 mesh_id_len; 1539 u8 peering_len; 1540 u8 preq_len; 1541 u8 prep_len; 1542 u8 perr_len; 1543 u8 country_elem_len; 1544 u8 bssid_index_len; 1545 1546 /* whether a parse error occurred while retrieving these elements */ 1547 bool parse_error; 1548 }; 1549 1550 static inline struct ieee80211_local *hw_to_local( 1551 struct ieee80211_hw *hw) 1552 { 1553 return container_of(hw, struct ieee80211_local, hw); 1554 } 1555 1556 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1557 { 1558 return container_of(txq, struct txq_info, txq); 1559 } 1560 1561 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1562 { 1563 struct txq_info *txqi = to_txq_info(txq); 1564 1565 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1566 } 1567 1568 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1569 { 1570 return ether_addr_equal(raddr, addr) || 1571 is_broadcast_ether_addr(raddr); 1572 } 1573 1574 static inline bool 1575 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1576 { 1577 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1578 status->flag & RX_FLAG_MACTIME_END); 1579 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1580 return true; 1581 /* can't handle non-legacy preamble yet */ 1582 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1583 status->encoding == RX_ENC_LEGACY) 1584 return true; 1585 return false; 1586 } 1587 1588 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1589 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1590 1591 /* This function returns the number of multicast stations connected to this 1592 * interface. It returns -1 if that number is not tracked, that is for netdevs 1593 * not in AP or AP_VLAN mode or when using 4addr. 1594 */ 1595 static inline int 1596 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1597 { 1598 if (sdata->vif.type == NL80211_IFTYPE_AP) 1599 return atomic_read(&sdata->u.ap.num_mcast_sta); 1600 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1601 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1602 return -1; 1603 } 1604 1605 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1606 struct ieee80211_rx_status *status, 1607 unsigned int mpdu_len, 1608 unsigned int mpdu_offset); 1609 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1610 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1611 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1612 u32 changed); 1613 void ieee80211_configure_filter(struct ieee80211_local *local); 1614 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1615 1616 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1617 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1618 u64 *cookie, gfp_t gfp); 1619 1620 void ieee80211_check_fast_rx(struct sta_info *sta); 1621 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1622 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1623 void ieee80211_clear_fast_rx(struct sta_info *sta); 1624 1625 /* STA code */ 1626 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1627 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1628 struct cfg80211_auth_request *req); 1629 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1630 struct cfg80211_assoc_request *req); 1631 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1632 struct cfg80211_deauth_request *req); 1633 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1634 struct cfg80211_disassoc_request *req); 1635 void ieee80211_send_pspoll(struct ieee80211_local *local, 1636 struct ieee80211_sub_if_data *sdata); 1637 void ieee80211_recalc_ps(struct ieee80211_local *local); 1638 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1639 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1640 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1641 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1642 struct sk_buff *skb); 1643 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1644 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1645 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1646 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1647 __le16 fc, bool acked); 1648 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1649 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1650 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1651 1652 /* IBSS code */ 1653 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1654 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1655 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1656 const u8 *bssid, const u8 *addr, u32 supp_rates); 1657 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1658 struct cfg80211_ibss_params *params); 1659 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1660 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1661 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1662 struct sk_buff *skb); 1663 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1664 struct cfg80211_csa_settings *csa_settings); 1665 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1666 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1667 1668 /* OCB code */ 1669 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1670 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1671 const u8 *bssid, const u8 *addr, u32 supp_rates); 1672 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1673 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1674 struct ocb_setup *setup); 1675 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1676 1677 /* mesh code */ 1678 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1679 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1680 struct sk_buff *skb); 1681 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1682 struct cfg80211_csa_settings *csa_settings); 1683 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1684 1685 /* scan/BSS handling */ 1686 void ieee80211_scan_work(struct work_struct *work); 1687 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1688 const u8 *ssid, u8 ssid_len, 1689 struct ieee80211_channel **channels, 1690 unsigned int n_channels, 1691 enum nl80211_bss_scan_width scan_width); 1692 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1693 struct cfg80211_scan_request *req); 1694 void ieee80211_scan_cancel(struct ieee80211_local *local); 1695 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1696 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1697 1698 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1699 struct ieee80211_bss * 1700 ieee80211_bss_info_update(struct ieee80211_local *local, 1701 struct ieee80211_rx_status *rx_status, 1702 struct ieee80211_mgmt *mgmt, 1703 size_t len, 1704 struct ieee80211_channel *channel); 1705 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1706 struct ieee80211_bss *bss); 1707 1708 /* scheduled scan handling */ 1709 int 1710 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1711 struct cfg80211_sched_scan_request *req); 1712 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1713 struct cfg80211_sched_scan_request *req); 1714 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1715 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1716 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1717 1718 /* off-channel/mgmt-tx */ 1719 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1720 void ieee80211_offchannel_return(struct ieee80211_local *local); 1721 void ieee80211_roc_setup(struct ieee80211_local *local); 1722 void ieee80211_start_next_roc(struct ieee80211_local *local); 1723 void ieee80211_roc_purge(struct ieee80211_local *local, 1724 struct ieee80211_sub_if_data *sdata); 1725 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1726 struct ieee80211_channel *chan, 1727 unsigned int duration, u64 *cookie); 1728 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1729 struct wireless_dev *wdev, u64 cookie); 1730 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1731 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1732 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1733 struct wireless_dev *wdev, u64 cookie); 1734 1735 /* channel switch handling */ 1736 void ieee80211_csa_finalize_work(struct work_struct *work); 1737 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1738 struct cfg80211_csa_settings *params); 1739 1740 /* interface handling */ 1741 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1742 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1743 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1744 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1745 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1746 MAC80211_SUPPORTED_FEATURES_RX) 1747 1748 int ieee80211_iface_init(void); 1749 void ieee80211_iface_exit(void); 1750 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1751 unsigned char name_assign_type, 1752 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1753 struct vif_params *params); 1754 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1755 enum nl80211_iftype type); 1756 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1757 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1758 u32 ieee80211_idle_off(struct ieee80211_local *local); 1759 void ieee80211_recalc_idle(struct ieee80211_local *local); 1760 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1761 const int offset); 1762 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1763 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1764 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1765 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1766 1767 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1768 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1769 bool update_bss); 1770 1771 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1772 { 1773 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1774 } 1775 1776 /* tx handling */ 1777 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1778 void ieee80211_tx_pending(unsigned long data); 1779 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1780 struct net_device *dev); 1781 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1782 struct net_device *dev); 1783 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1784 struct net_device *dev); 1785 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1786 struct net_device *dev, 1787 u32 info_flags, 1788 u32 ctrl_flags, 1789 u64 *cookie); 1790 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1791 struct sk_buff_head *skbs); 1792 struct sk_buff * 1793 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1794 struct sk_buff *skb, u32 info_flags); 1795 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1796 struct ieee80211_supported_band *sband, 1797 int retry_count, int shift, bool send_to_cooked, 1798 struct ieee80211_tx_status *status); 1799 1800 void ieee80211_check_fast_xmit(struct sta_info *sta); 1801 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1802 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1803 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1804 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1805 const u8 *buf, size_t len, 1806 const u8 *dest, __be16 proto, bool unencrypted, 1807 u64 *cookie); 1808 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1809 const u8 *buf, size_t len); 1810 1811 /* HT */ 1812 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1813 struct ieee80211_sta_ht_cap *ht_cap); 1814 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1815 struct ieee80211_supported_band *sband, 1816 const struct ieee80211_ht_cap *ht_cap_ie, 1817 struct sta_info *sta); 1818 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1819 const u8 *da, u16 tid, 1820 u16 initiator, u16 reason_code); 1821 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1822 enum ieee80211_smps_mode smps, const u8 *da, 1823 const u8 *bssid); 1824 void ieee80211_request_smps_ap_work(struct work_struct *work); 1825 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1826 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1827 enum ieee80211_smps_mode smps_mode_new); 1828 1829 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1830 u16 initiator, u16 reason, bool stop); 1831 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1832 u16 initiator, u16 reason, bool stop); 1833 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1834 u8 dialog_token, u16 timeout, 1835 u16 start_seq_num, u16 ba_policy, u16 tid, 1836 u16 buf_size, bool tx, bool auto_seq, 1837 const struct ieee80211_addba_ext_ie *addbaext); 1838 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1839 enum ieee80211_agg_stop_reason reason); 1840 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1841 struct sta_info *sta, 1842 struct ieee80211_mgmt *mgmt, size_t len); 1843 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1844 struct sta_info *sta, 1845 struct ieee80211_mgmt *mgmt, 1846 size_t len); 1847 void ieee80211_process_addba_request(struct ieee80211_local *local, 1848 struct sta_info *sta, 1849 struct ieee80211_mgmt *mgmt, 1850 size_t len); 1851 1852 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1853 enum ieee80211_agg_stop_reason reason); 1854 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1855 enum ieee80211_agg_stop_reason reason); 1856 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1857 struct tid_ampdu_tx *tid_tx); 1858 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1859 struct tid_ampdu_tx *tid_tx); 1860 void ieee80211_ba_session_work(struct work_struct *work); 1861 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1862 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1863 1864 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1865 enum nl80211_smps_mode 1866 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1867 1868 /* VHT */ 1869 void 1870 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1871 struct ieee80211_supported_band *sband, 1872 const struct ieee80211_vht_cap *vht_cap_ie, 1873 struct sta_info *sta); 1874 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1875 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1876 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1877 enum ieee80211_sta_rx_bandwidth 1878 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1879 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1880 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1881 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1882 struct ieee80211_mgmt *mgmt); 1883 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1884 struct sta_info *sta, u8 opmode, 1885 enum nl80211_band band); 1886 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1887 struct sta_info *sta, u8 opmode, 1888 enum nl80211_band band); 1889 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1890 struct ieee80211_sta_vht_cap *vht_cap); 1891 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1892 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1893 enum nl80211_chan_width 1894 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1895 1896 /* HE */ 1897 void 1898 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1899 struct ieee80211_supported_band *sband, 1900 const u8 *he_cap_ie, u8 he_cap_len, 1901 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 1902 struct sta_info *sta); 1903 void 1904 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 1905 const struct ieee80211_he_spr *he_spr_ie_elem); 1906 1907 void 1908 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 1909 const struct ieee80211_he_operation *he_op_ie_elem); 1910 1911 /* Spectrum management */ 1912 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1913 struct ieee80211_mgmt *mgmt, 1914 size_t len); 1915 /** 1916 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1917 * @sdata: the sdata of the interface which has received the frame 1918 * @elems: parsed 802.11 elements received with the frame 1919 * @current_band: indicates the current band 1920 * @vht_cap_info: VHT capabilities of the transmitter 1921 * @sta_flags: contains information about own capabilities and restrictions 1922 * to decide which channel switch announcements can be accepted. Only the 1923 * following subset of &enum ieee80211_sta_flags are evaluated: 1924 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1925 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1926 * %IEEE80211_STA_DISABLE_160MHZ. 1927 * @bssid: the currently connected bssid (for reporting) 1928 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1929 All of them will be filled with if success only. 1930 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1931 */ 1932 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1933 struct ieee802_11_elems *elems, 1934 enum nl80211_band current_band, 1935 u32 vht_cap_info, 1936 u32 sta_flags, u8 *bssid, 1937 struct ieee80211_csa_ie *csa_ie); 1938 1939 /* Suspend/resume and hw reconfiguration */ 1940 int ieee80211_reconfig(struct ieee80211_local *local); 1941 void ieee80211_stop_device(struct ieee80211_local *local); 1942 1943 int __ieee80211_suspend(struct ieee80211_hw *hw, 1944 struct cfg80211_wowlan *wowlan); 1945 1946 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1947 { 1948 struct ieee80211_local *local = hw_to_local(hw); 1949 1950 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1951 !test_bit(SCAN_COMPLETED, &local->scanning), 1952 "%s: resume with hardware scan still in progress\n", 1953 wiphy_name(hw->wiphy)); 1954 1955 return ieee80211_reconfig(hw_to_local(hw)); 1956 } 1957 1958 /* utility functions/constants */ 1959 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1960 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1961 int rate, int erp, int short_preamble, 1962 int shift); 1963 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1964 struct ieee80211_tx_queue_params *qparam, 1965 int ac); 1966 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1967 bool bss_notify, bool enable_qos); 1968 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1969 struct sta_info *sta, struct sk_buff *skb); 1970 1971 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1972 struct sk_buff *skb, int tid, 1973 enum nl80211_band band); 1974 1975 /* sta_out needs to be checked for ERR_PTR() before using */ 1976 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 1977 struct sk_buff *skb, 1978 struct sta_info **sta_out); 1979 1980 static inline void 1981 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1982 struct sk_buff *skb, int tid, 1983 enum nl80211_band band) 1984 { 1985 rcu_read_lock(); 1986 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1987 rcu_read_unlock(); 1988 } 1989 1990 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1991 struct sk_buff *skb, int tid) 1992 { 1993 struct ieee80211_chanctx_conf *chanctx_conf; 1994 1995 rcu_read_lock(); 1996 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1997 if (WARN_ON(!chanctx_conf)) { 1998 rcu_read_unlock(); 1999 kfree_skb(skb); 2000 return; 2001 } 2002 2003 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 2004 chanctx_conf->def.chan->band); 2005 rcu_read_unlock(); 2006 } 2007 2008 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2009 struct sk_buff *skb) 2010 { 2011 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2012 ieee80211_tx_skb_tid(sdata, skb, 7); 2013 } 2014 2015 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2016 struct ieee802_11_elems *elems, 2017 u64 filter, u32 crc, u8 *transmitter_bssid, 2018 u8 *bss_bssid); 2019 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 2020 bool action, 2021 struct ieee802_11_elems *elems, 2022 u8 *transmitter_bssid, 2023 u8 *bss_bssid) 2024 { 2025 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0, 2026 transmitter_bssid, bss_bssid); 2027 } 2028 2029 2030 extern const int ieee802_1d_to_ac[8]; 2031 2032 static inline int ieee80211_ac_from_tid(int tid) 2033 { 2034 return ieee802_1d_to_ac[tid & 7]; 2035 } 2036 2037 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2038 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2039 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2040 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2041 struct ieee80211_sub_if_data *sdata, 2042 bool powersave); 2043 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 2044 struct ieee80211_hdr *hdr); 2045 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2046 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2047 2048 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2049 unsigned long queues, 2050 enum queue_stop_reason reason, 2051 bool refcounted); 2052 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2053 struct ieee80211_sub_if_data *sdata, 2054 enum queue_stop_reason reason); 2055 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2056 struct ieee80211_sub_if_data *sdata, 2057 enum queue_stop_reason reason); 2058 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2059 unsigned long queues, 2060 enum queue_stop_reason reason, 2061 bool refcounted); 2062 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2063 enum queue_stop_reason reason, 2064 bool refcounted); 2065 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2066 enum queue_stop_reason reason, 2067 bool refcounted); 2068 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2069 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2070 struct sk_buff *skb); 2071 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2072 struct sk_buff_head *skbs); 2073 void ieee80211_flush_queues(struct ieee80211_local *local, 2074 struct ieee80211_sub_if_data *sdata, bool drop); 2075 void __ieee80211_flush_queues(struct ieee80211_local *local, 2076 struct ieee80211_sub_if_data *sdata, 2077 unsigned int queues, bool drop); 2078 2079 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2080 { 2081 /* 2082 * It's unsafe to try to do any work during reconfigure flow. 2083 * When the flow ends the work will be requeued. 2084 */ 2085 if (local->in_reconfig) 2086 return false; 2087 2088 /* 2089 * If quiescing is set, we are racing with __ieee80211_suspend. 2090 * __ieee80211_suspend flushes the workers after setting quiescing, 2091 * and we check quiescing / suspended before enqueing new workers. 2092 * We should abort the worker to avoid the races below. 2093 */ 2094 if (local->quiescing) 2095 return false; 2096 2097 /* 2098 * We might already be suspended if the following scenario occurs: 2099 * __ieee80211_suspend Control path 2100 * 2101 * if (local->quiescing) 2102 * return; 2103 * local->quiescing = true; 2104 * flush_workqueue(); 2105 * queue_work(...); 2106 * local->suspended = true; 2107 * local->quiescing = false; 2108 * worker starts running... 2109 */ 2110 if (local->suspended) 2111 return false; 2112 2113 return true; 2114 } 2115 2116 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2117 void ieee80211_txq_set_params(struct ieee80211_local *local); 2118 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2119 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2120 struct sta_info *sta, 2121 struct txq_info *txq, int tid); 2122 void ieee80211_txq_purge(struct ieee80211_local *local, 2123 struct txq_info *txqi); 2124 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2125 struct ieee80211_sub_if_data *sdata); 2126 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2127 struct txq_info *txqi); 2128 void ieee80211_wake_txqs(unsigned long data); 2129 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2130 u16 transaction, u16 auth_alg, u16 status, 2131 const u8 *extra, size_t extra_len, const u8 *bssid, 2132 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2133 u32 tx_flags); 2134 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2135 const u8 *da, const u8 *bssid, 2136 u16 stype, u16 reason, 2137 bool send_frame, u8 *frame_buf); 2138 2139 enum { 2140 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2141 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2142 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2143 }; 2144 2145 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2146 size_t buffer_len, 2147 struct ieee80211_scan_ies *ie_desc, 2148 const u8 *ie, size_t ie_len, 2149 u8 bands_used, u32 *rate_masks, 2150 struct cfg80211_chan_def *chandef, 2151 u32 flags); 2152 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2153 const u8 *src, const u8 *dst, 2154 u32 ratemask, 2155 struct ieee80211_channel *chan, 2156 const u8 *ssid, size_t ssid_len, 2157 const u8 *ie, size_t ie_len, 2158 u32 flags); 2159 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2160 struct ieee802_11_elems *elems, 2161 enum nl80211_band band, u32 *basic_rates); 2162 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2163 enum ieee80211_smps_mode smps_mode); 2164 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2165 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2166 2167 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2168 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2169 u16 cap); 2170 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2171 const struct cfg80211_chan_def *chandef, 2172 u16 prot_mode, bool rifs_mode); 2173 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2174 const struct cfg80211_chan_def *chandef); 2175 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2176 u32 cap); 2177 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2178 const struct cfg80211_chan_def *chandef); 2179 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2180 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2181 const struct ieee80211_sta_he_cap *he_cap, 2182 u8 *end); 2183 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2184 struct sk_buff *skb); 2185 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2186 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2187 const struct ieee80211_supported_band *sband, 2188 const u8 *srates, int srates_len, u32 *rates); 2189 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2190 struct sk_buff *skb, bool need_basic, 2191 enum nl80211_band band); 2192 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2193 struct sk_buff *skb, bool need_basic, 2194 enum nl80211_band band); 2195 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2196 2197 /* channel management */ 2198 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2199 struct cfg80211_chan_def *chandef); 2200 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2201 const struct ieee80211_vht_operation *oper, 2202 const struct ieee80211_ht_operation *htop, 2203 struct cfg80211_chan_def *chandef); 2204 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2205 const struct ieee80211_he_operation *he_oper, 2206 struct cfg80211_chan_def *chandef); 2207 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2208 2209 int __must_check 2210 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2211 const struct cfg80211_chan_def *chandef, 2212 enum ieee80211_chanctx_mode mode); 2213 int __must_check 2214 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2215 const struct cfg80211_chan_def *chandef, 2216 enum ieee80211_chanctx_mode mode, 2217 bool radar_required); 2218 int __must_check 2219 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2220 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2221 2222 int __must_check 2223 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2224 const struct cfg80211_chan_def *chandef, 2225 u32 *changed); 2226 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2227 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2228 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2229 bool clear); 2230 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2231 struct ieee80211_chanctx *ctx); 2232 2233 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2234 struct ieee80211_chanctx *chanctx); 2235 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2236 struct ieee80211_chanctx *ctx); 2237 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2238 2239 void ieee80211_dfs_cac_timer(unsigned long data); 2240 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2241 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2242 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2243 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2244 struct cfg80211_csa_settings *csa_settings); 2245 2246 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2247 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2248 const struct ieee80211_cipher_scheme * 2249 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2250 enum nl80211_iftype iftype); 2251 int ieee80211_cs_headroom(struct ieee80211_local *local, 2252 struct cfg80211_crypto_settings *crypto, 2253 enum nl80211_iftype iftype); 2254 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2255 struct ieee80211_sub_if_data *sdata); 2256 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2257 const struct cfg80211_chan_def *chandef, 2258 enum ieee80211_chanctx_mode chanmode, 2259 u8 radar_detect); 2260 int ieee80211_max_num_channels(struct ieee80211_local *local); 2261 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2262 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2263 struct ieee80211_chanctx *ctx); 2264 2265 /* TDLS */ 2266 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2267 const u8 *peer, u8 action_code, u8 dialog_token, 2268 u16 status_code, u32 peer_capability, 2269 bool initiator, const u8 *extra_ies, 2270 size_t extra_ies_len); 2271 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2272 const u8 *peer, enum nl80211_tdls_operation oper); 2273 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2274 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2275 const u8 *addr, u8 oper_class, 2276 struct cfg80211_chan_def *chandef); 2277 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2278 struct net_device *dev, 2279 const u8 *addr); 2280 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2281 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2282 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2283 const u8 *peer, u16 reason); 2284 const char *ieee80211_get_reason_code_string(u16 reason_code); 2285 2286 extern const struct ethtool_ops ieee80211_ethtool_ops; 2287 2288 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2289 struct ieee80211_vif *vif, 2290 struct ieee80211_sta *pubsta, 2291 int len, bool ampdu); 2292 #ifdef CONFIG_MAC80211_NOINLINE 2293 #define debug_noinline noinline 2294 #else 2295 #define debug_noinline 2296 #endif 2297 2298 #endif /* IEEE80211_I_H */ 2299