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) 2018-2022 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 <linux/rbtree.h> 29 #include <net/ieee80211_radiotap.h> 30 #include <net/cfg80211.h> 31 #include <net/mac80211.h> 32 #include <net/fq.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 #include "drop.h" 37 38 extern const struct cfg80211_ops mac80211_config_ops; 39 40 struct ieee80211_local; 41 struct ieee80211_mesh_fast_tx; 42 43 /* Maximum number of broadcast/multicast frames to buffer when some of the 44 * associated stations are using power saving. */ 45 #define AP_MAX_BC_BUFFER 128 46 47 /* Maximum number of frames buffered to all STAs, including multicast frames. 48 * Note: increasing this limit increases the potential memory requirement. Each 49 * frame can be up to about 2 kB long. */ 50 #define TOTAL_MAX_TX_BUFFER 512 51 52 /* Required encryption head and tailroom */ 53 #define IEEE80211_ENCRYPT_HEADROOM 8 54 #define IEEE80211_ENCRYPT_TAILROOM 18 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. Decreasing the 61 * probability of that happening by using legacy mode for all ACs but VO isn't 62 * enough. 63 * 64 * Cisco 4410N originally forced us to enable VO by default only because it 65 * treated non-VO ACs as legacy. 66 * 67 * However some APs (notably Netgear R7000) silently reclassify packets to 68 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 69 * clients would never see some frames (e.g. ARP responses) or would fetch them 70 * accidentally after a long time. 71 * 72 * It makes little sense to enable u-APSD queues by default because it needs 73 * userspace applications to be aware of it to actually take advantage of the 74 * possible additional powersavings. Implicitly depending on driver autotrigger 75 * frame support doesn't make much sense. 76 */ 77 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 78 79 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 80 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 81 82 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 83 84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 85 86 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 87 88 enum ieee80211_status_data { 89 IEEE80211_STATUS_TYPE_MASK = 0x00f, 90 IEEE80211_STATUS_TYPE_INVALID = 0, 91 IEEE80211_STATUS_TYPE_SMPS = 1, 92 IEEE80211_STATUS_SUBDATA_MASK = 0xff0, 93 }; 94 95 static inline bool 96 ieee80211_sta_keep_active(struct sta_info *sta, u8 ac) 97 { 98 /* Keep a station's queues on the active list for deficit accounting 99 * purposes if it was active or queued during the last 100ms. 100 */ 101 return time_before_eq(jiffies, sta->airtime[ac].last_active + HZ / 10); 102 } 103 104 struct ieee80211_bss { 105 u32 device_ts_beacon, device_ts_presp; 106 107 bool wmm_used; 108 bool uapsd_supported; 109 110 #define IEEE80211_MAX_SUPP_RATES 32 111 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 112 size_t supp_rates_len; 113 struct ieee80211_rate *beacon_rate; 114 115 u32 vht_cap_info; 116 117 /* 118 * During association, we save an ERP value from a probe response so 119 * that we can feed ERP info to the driver when handling the 120 * association completes. these fields probably won't be up-to-date 121 * otherwise, you probably don't want to use them. 122 */ 123 bool has_erp_value; 124 u8 erp_value; 125 126 /* Keep track of the corruption of the last beacon/probe response. */ 127 u8 corrupt_data; 128 129 /* Keep track of what bits of information we have valid info for. */ 130 u8 valid_data; 131 }; 132 133 /** 134 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 135 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 136 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 137 * 138 * These are bss flags that are attached to a bss in the 139 * @corrupt_data field of &struct ieee80211_bss. 140 */ 141 enum ieee80211_bss_corrupt_data_flags { 142 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 143 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 144 }; 145 146 /** 147 * enum ieee80211_valid_data_flags - BSS valid data flags 148 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 149 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 150 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 151 * 152 * These are bss flags that are attached to a bss in the 153 * @valid_data field of &struct ieee80211_bss. They show which parts 154 * of the data structure were received as a result of an un-corrupted 155 * beacon/probe response. 156 */ 157 enum ieee80211_bss_valid_data_flags { 158 IEEE80211_BSS_VALID_WMM = BIT(1), 159 IEEE80211_BSS_VALID_RATES = BIT(2), 160 IEEE80211_BSS_VALID_ERP = BIT(3) 161 }; 162 163 typedef unsigned __bitwise ieee80211_tx_result; 164 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 165 #define TX_DROP ((__force ieee80211_tx_result) 1u) 166 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 167 168 #define IEEE80211_TX_UNICAST BIT(1) 169 #define IEEE80211_TX_PS_BUFFERED BIT(2) 170 171 struct ieee80211_tx_data { 172 struct sk_buff *skb; 173 struct sk_buff_head skbs; 174 struct ieee80211_local *local; 175 struct ieee80211_sub_if_data *sdata; 176 struct sta_info *sta; 177 struct ieee80211_key *key; 178 struct ieee80211_tx_rate rate; 179 180 unsigned int flags; 181 }; 182 183 /** 184 * enum ieee80211_packet_rx_flags - packet RX flags 185 * @IEEE80211_RX_AMSDU: a-MSDU packet 186 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 187 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 188 * 189 * These are per-frame flags that are attached to a frame in the 190 * @rx_flags field of &struct ieee80211_rx_status. 191 */ 192 enum ieee80211_packet_rx_flags { 193 IEEE80211_RX_AMSDU = BIT(3), 194 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 195 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 196 }; 197 198 /** 199 * enum ieee80211_rx_flags - RX data flags 200 * 201 * @IEEE80211_RX_CMNTR: received on cooked monitor already 202 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 203 * to cfg80211_report_obss_beacon(). 204 * 205 * These flags are used across handling multiple interfaces 206 * for a single frame. 207 */ 208 enum ieee80211_rx_flags { 209 IEEE80211_RX_CMNTR = BIT(0), 210 IEEE80211_RX_BEACON_REPORTED = BIT(1), 211 }; 212 213 struct ieee80211_rx_data { 214 struct list_head *list; 215 struct sk_buff *skb; 216 struct ieee80211_local *local; 217 struct ieee80211_sub_if_data *sdata; 218 struct ieee80211_link_data *link; 219 struct sta_info *sta; 220 struct link_sta_info *link_sta; 221 struct ieee80211_key *key; 222 223 unsigned int flags; 224 225 /* 226 * Index into sequence numbers array, 0..16 227 * since the last (16) is used for non-QoS, 228 * will be 16 on non-QoS frames. 229 */ 230 int seqno_idx; 231 232 /* 233 * Index into the security IV/PN arrays, 0..16 234 * since the last (16) is used for CCMP-encrypted 235 * management frames, will be set to 16 on mgmt 236 * frames and 0 on non-QoS frames. 237 */ 238 int security_idx; 239 240 int link_id; 241 242 union { 243 struct { 244 u32 iv32; 245 u16 iv16; 246 } tkip; 247 struct { 248 u8 pn[IEEE80211_CCMP_PN_LEN]; 249 } ccm_gcm; 250 }; 251 }; 252 253 struct ieee80211_csa_settings { 254 const u16 *counter_offsets_beacon; 255 const u16 *counter_offsets_presp; 256 257 int n_counter_offsets_beacon; 258 int n_counter_offsets_presp; 259 260 u8 count; 261 }; 262 263 struct ieee80211_color_change_settings { 264 u16 counter_offset_beacon; 265 u16 counter_offset_presp; 266 u8 count; 267 }; 268 269 struct beacon_data { 270 u8 *head, *tail; 271 int head_len, tail_len; 272 struct ieee80211_meshconf_ie *meshconf; 273 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 274 u8 cntdwn_current_counter; 275 struct cfg80211_mbssid_elems *mbssid_ies; 276 struct cfg80211_rnr_elems *rnr_ies; 277 struct rcu_head rcu_head; 278 }; 279 280 struct probe_resp { 281 struct rcu_head rcu_head; 282 int len; 283 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 284 u8 data[]; 285 }; 286 287 struct fils_discovery_data { 288 struct rcu_head rcu_head; 289 int len; 290 u8 data[]; 291 }; 292 293 struct unsol_bcast_probe_resp_data { 294 struct rcu_head rcu_head; 295 int len; 296 u8 data[]; 297 }; 298 299 struct ps_data { 300 /* yes, this looks ugly, but guarantees that we can later use 301 * bitmap_empty :) 302 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 303 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 304 __aligned(__alignof__(unsigned long)); 305 struct sk_buff_head bc_buf; 306 atomic_t num_sta_ps; /* number of stations in PS mode */ 307 int dtim_count; 308 bool dtim_bc_mc; 309 }; 310 311 struct ieee80211_if_ap { 312 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 313 314 struct ps_data ps; 315 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 316 317 bool multicast_to_unicast; 318 bool active; 319 }; 320 321 struct ieee80211_if_vlan { 322 struct list_head list; /* write-protected with RTNL and local->mtx */ 323 324 /* used for all tx if the VLAN is configured to 4-addr mode */ 325 struct sta_info __rcu *sta; 326 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 327 }; 328 329 struct mesh_stats { 330 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 331 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 332 __u32 fwded_frames; /* Mesh total forwarded frames */ 333 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 334 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 335 }; 336 337 #define PREQ_Q_F_START 0x1 338 #define PREQ_Q_F_REFRESH 0x2 339 struct mesh_preq_queue { 340 struct list_head list; 341 u8 dst[ETH_ALEN]; 342 u8 flags; 343 }; 344 345 struct ieee80211_roc_work { 346 struct list_head list; 347 348 struct ieee80211_sub_if_data *sdata; 349 350 struct ieee80211_channel *chan; 351 352 bool started, abort, hw_begun, notified; 353 bool on_channel; 354 355 unsigned long start_time; 356 357 u32 duration, req_duration; 358 struct sk_buff *frame; 359 u64 cookie, mgmt_tx_cookie; 360 enum ieee80211_roc_type type; 361 }; 362 363 /* flags used in struct ieee80211_if_managed.flags */ 364 enum ieee80211_sta_flags { 365 IEEE80211_STA_CONNECTION_POLL = BIT(1), 366 IEEE80211_STA_CONTROL_PORT = BIT(2), 367 IEEE80211_STA_MFP_ENABLED = BIT(6), 368 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 369 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 370 IEEE80211_STA_ENABLE_RRM = BIT(15), 371 }; 372 373 typedef u32 __bitwise ieee80211_conn_flags_t; 374 375 enum ieee80211_conn_flags { 376 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0), 377 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1), 378 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2), 379 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3), 380 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4), 381 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5), 382 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6), 383 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7), 384 }; 385 386 struct ieee80211_mgd_auth_data { 387 struct cfg80211_bss *bss; 388 unsigned long timeout; 389 int tries; 390 u16 algorithm, expected_transaction; 391 392 u8 key[WLAN_KEY_LEN_WEP104]; 393 u8 key_len, key_idx; 394 bool done, waiting; 395 bool peer_confirmed; 396 bool timeout_started; 397 int link_id; 398 399 u8 ap_addr[ETH_ALEN] __aligned(2); 400 401 u16 sae_trans, sae_status; 402 size_t data_len; 403 u8 data[]; 404 }; 405 406 struct ieee80211_mgd_assoc_data { 407 struct { 408 struct cfg80211_bss *bss; 409 410 u8 addr[ETH_ALEN] __aligned(2); 411 412 u8 ap_ht_param; 413 414 struct ieee80211_vht_cap ap_vht_cap; 415 416 size_t elems_len; 417 u8 *elems; /* pointing to inside ie[] below */ 418 419 ieee80211_conn_flags_t conn_flags; 420 421 u16 status; 422 423 bool disabled; 424 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 425 426 u8 ap_addr[ETH_ALEN] __aligned(2); 427 428 /* this is for a workaround, so we use it only for non-MLO */ 429 const u8 *supp_rates; 430 u8 supp_rates_len; 431 432 unsigned long timeout; 433 int tries; 434 435 u8 prev_ap_addr[ETH_ALEN]; 436 u8 ssid[IEEE80211_MAX_SSID_LEN]; 437 u8 ssid_len; 438 bool wmm, uapsd; 439 bool need_beacon; 440 bool synced; 441 bool timeout_started; 442 bool comeback; /* whether the AP has requested association comeback */ 443 bool s1g; 444 445 unsigned int assoc_link_id; 446 447 u8 fils_nonces[2 * FILS_NONCE_LEN]; 448 u8 fils_kek[FILS_MAX_KEK_LEN]; 449 size_t fils_kek_len; 450 451 size_t ie_len; 452 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 453 u8 ie[]; 454 }; 455 456 struct ieee80211_sta_tx_tspec { 457 /* timestamp of the first packet in the time slice */ 458 unsigned long time_slice_start; 459 460 u32 admitted_time; /* in usecs, unlike over the air */ 461 u8 tsid; 462 s8 up; /* signed to be able to invalidate with -1 during teardown */ 463 464 /* consumed TX time in microseconds in the time slice */ 465 u32 consumed_tx_time; 466 enum { 467 TX_TSPEC_ACTION_NONE = 0, 468 TX_TSPEC_ACTION_DOWNGRADE, 469 TX_TSPEC_ACTION_STOP_DOWNGRADE, 470 } action; 471 bool downgraded; 472 }; 473 474 /* Advertised TID-to-link mapping info */ 475 struct ieee80211_adv_ttlm_info { 476 /* time in TUs at which the new mapping is established, or 0 if there is 477 * no planned advertised TID-to-link mapping 478 */ 479 u16 switch_time; 480 u32 duration; /* duration of the planned T2L map in TUs */ 481 u16 map; /* map of usable links for all TIDs */ 482 bool active; /* whether the advertised mapping is active or not */ 483 }; 484 485 DECLARE_EWMA(beacon_signal, 4, 4) 486 487 struct ieee80211_if_managed { 488 struct timer_list timer; 489 struct timer_list conn_mon_timer; 490 struct timer_list bcn_mon_timer; 491 struct wiphy_work monitor_work; 492 struct wiphy_work beacon_connection_loss_work; 493 struct wiphy_work csa_connection_drop_work; 494 495 unsigned long beacon_timeout; 496 unsigned long probe_timeout; 497 int probe_send_count; 498 bool nullfunc_failed; 499 u8 connection_loss:1, 500 driver_disconnect:1, 501 reconnect:1, 502 associated:1; 503 504 struct ieee80211_mgd_auth_data *auth_data; 505 struct ieee80211_mgd_assoc_data *assoc_data; 506 507 bool powersave; /* powersave requested for this iface */ 508 bool broken_ap; /* AP is broken -- turn off powersave */ 509 510 unsigned int flags; 511 512 bool status_acked; 513 bool status_received; 514 __le16 status_fc; 515 516 enum { 517 IEEE80211_MFP_DISABLED, 518 IEEE80211_MFP_OPTIONAL, 519 IEEE80211_MFP_REQUIRED 520 } mfp; /* management frame protection */ 521 522 /* 523 * Bitmask of enabled u-apsd queues, 524 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 525 * to take effect. 526 */ 527 unsigned int uapsd_queues; 528 529 /* 530 * Maximum number of buffered frames AP can deliver during a 531 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 532 * Needs a new association to take effect. 533 */ 534 unsigned int uapsd_max_sp_len; 535 536 u8 use_4addr; 537 538 /* 539 * State variables for keeping track of RSSI of the AP currently 540 * connected to and informing driver when RSSI has gone 541 * below/above a certain threshold. 542 */ 543 int rssi_min_thold, rssi_max_thold; 544 545 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 546 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 547 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 548 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 549 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 550 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 551 552 /* TDLS support */ 553 u8 tdls_peer[ETH_ALEN] __aligned(2); 554 struct wiphy_delayed_work tdls_peer_del_work; 555 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 556 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 557 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 558 bool tdls_wider_bw_prohibited; 559 560 /* WMM-AC TSPEC support */ 561 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 562 /* Use a separate work struct so that we can do something here 563 * while the sdata->work is flushing the queues, for example. 564 * otherwise, in scenarios where we hardly get any traffic out 565 * on the BE queue, but there's a lot of VO traffic, we might 566 * get stuck in a downgraded situation and flush takes forever. 567 */ 568 struct wiphy_delayed_work tx_tspec_wk; 569 570 /* Information elements from the last transmitted (Re)Association 571 * Request frame. 572 */ 573 u8 *assoc_req_ies; 574 size_t assoc_req_ies_len; 575 576 struct wiphy_delayed_work ml_reconf_work; 577 u16 removed_links; 578 579 /* TID-to-link mapping support */ 580 struct wiphy_delayed_work ttlm_work; 581 struct ieee80211_adv_ttlm_info ttlm_info; 582 }; 583 584 struct ieee80211_if_ibss { 585 struct timer_list timer; 586 struct wiphy_work csa_connection_drop_work; 587 588 unsigned long last_scan_completed; 589 590 u32 basic_rates; 591 592 bool fixed_bssid; 593 bool fixed_channel; 594 bool privacy; 595 596 bool control_port; 597 bool userspace_handles_dfs; 598 599 u8 bssid[ETH_ALEN] __aligned(2); 600 u8 ssid[IEEE80211_MAX_SSID_LEN]; 601 u8 ssid_len, ie_len; 602 u8 *ie; 603 struct cfg80211_chan_def chandef; 604 605 unsigned long ibss_join_req; 606 /* probe response/beacon for IBSS */ 607 struct beacon_data __rcu *presp; 608 609 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 610 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 611 612 spinlock_t incomplete_lock; 613 struct list_head incomplete_stations; 614 615 enum { 616 IEEE80211_IBSS_MLME_SEARCH, 617 IEEE80211_IBSS_MLME_JOINED, 618 } state; 619 }; 620 621 /** 622 * struct ieee80211_if_ocb - OCB mode state 623 * 624 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 625 * @wrkq_flags: OCB deferred task action 626 * @incomplete_lock: delayed STA insertion lock 627 * @incomplete_stations: list of STAs waiting for delayed insertion 628 * @joined: indication if the interface is connected to an OCB network 629 */ 630 struct ieee80211_if_ocb { 631 struct timer_list housekeeping_timer; 632 unsigned long wrkq_flags; 633 634 spinlock_t incomplete_lock; 635 struct list_head incomplete_stations; 636 637 bool joined; 638 }; 639 640 /** 641 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 642 * 643 * these declarations define the interface, which enables 644 * vendor-specific mesh synchronization 645 * 646 * @rx_bcn_presp: beacon/probe response was received 647 * @adjust_tsf: TSF adjustment method 648 */ 649 struct ieee80211_mesh_sync_ops { 650 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 651 struct ieee80211_mgmt *mgmt, unsigned int len, 652 const struct ieee80211_meshconf_ie *mesh_cfg, 653 struct ieee80211_rx_status *rx_status); 654 655 /* should be called with beacon_data under RCU read lock */ 656 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 657 struct beacon_data *beacon); 658 /* add other framework functions here */ 659 }; 660 661 struct mesh_csa_settings { 662 struct rcu_head rcu_head; 663 struct cfg80211_csa_settings settings; 664 }; 665 666 /** 667 * struct mesh_table 668 * 669 * @known_gates: list of known mesh gates and their mpaths by the station. The 670 * gate's mpath may or may not be resolved and active. 671 * @gates_lock: protects updates to known_gates 672 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 673 * @walk_head: linked list containing all mesh_path objects 674 * @walk_lock: lock protecting walk_head 675 * @entries: number of entries in the table 676 */ 677 struct mesh_table { 678 struct hlist_head known_gates; 679 spinlock_t gates_lock; 680 struct rhashtable rhead; 681 struct hlist_head walk_head; 682 spinlock_t walk_lock; 683 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 684 }; 685 686 /** 687 * struct mesh_tx_cache - mesh fast xmit header cache 688 * 689 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key 690 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects 691 * @walk_lock: lock protecting walk_head and rht 692 */ 693 struct mesh_tx_cache { 694 struct rhashtable rht; 695 struct hlist_head walk_head; 696 spinlock_t walk_lock; 697 }; 698 699 struct ieee80211_if_mesh { 700 struct timer_list housekeeping_timer; 701 struct timer_list mesh_path_timer; 702 struct timer_list mesh_path_root_timer; 703 704 unsigned long wrkq_flags; 705 unsigned long mbss_changed[64 / BITS_PER_LONG]; 706 707 bool userspace_handles_dfs; 708 709 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 710 size_t mesh_id_len; 711 /* Active Path Selection Protocol Identifier */ 712 u8 mesh_pp_id; 713 /* Active Path Selection Metric Identifier */ 714 u8 mesh_pm_id; 715 /* Congestion Control Mode Identifier */ 716 u8 mesh_cc_id; 717 /* Synchronization Protocol Identifier */ 718 u8 mesh_sp_id; 719 /* Authentication Protocol Identifier */ 720 u8 mesh_auth_id; 721 /* Local mesh Sequence Number */ 722 u32 sn; 723 /* Last used PREQ ID */ 724 u32 preq_id; 725 atomic_t mpaths; 726 /* Timestamp of last SN update */ 727 unsigned long last_sn_update; 728 /* Time when it's ok to send next PERR */ 729 unsigned long next_perr; 730 /* Timestamp of last PREQ sent */ 731 unsigned long last_preq; 732 struct mesh_rmc *rmc; 733 spinlock_t mesh_preq_queue_lock; 734 struct mesh_preq_queue preq_queue; 735 int preq_queue_len; 736 struct mesh_stats mshstats; 737 struct mesh_config mshcfg; 738 atomic_t estab_plinks; 739 atomic_t mesh_seqnum; 740 bool accepting_plinks; 741 int num_gates; 742 struct beacon_data __rcu *beacon; 743 const u8 *ie; 744 u8 ie_len; 745 enum { 746 IEEE80211_MESH_SEC_NONE = 0x0, 747 IEEE80211_MESH_SEC_AUTHED = 0x1, 748 IEEE80211_MESH_SEC_SECURED = 0x2, 749 } security; 750 bool user_mpm; 751 /* Extensible Synchronization Framework */ 752 const struct ieee80211_mesh_sync_ops *sync_ops; 753 s64 sync_offset_clockdrift_max; 754 spinlock_t sync_offset_lock; 755 /* mesh power save */ 756 enum nl80211_mesh_power_mode nonpeer_pm; 757 int ps_peers_light_sleep; 758 int ps_peers_deep_sleep; 759 struct ps_data ps; 760 /* Channel Switching Support */ 761 struct mesh_csa_settings __rcu *csa; 762 enum { 763 IEEE80211_MESH_CSA_ROLE_NONE, 764 IEEE80211_MESH_CSA_ROLE_INIT, 765 IEEE80211_MESH_CSA_ROLE_REPEATER, 766 } csa_role; 767 u8 chsw_ttl; 768 u16 pre_value; 769 770 /* offset from skb->data while building IE */ 771 int meshconf_offset; 772 773 struct mesh_table mesh_paths; 774 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 775 int mesh_paths_generation; 776 int mpp_paths_generation; 777 struct mesh_tx_cache tx_cache; 778 }; 779 780 #ifdef CONFIG_MAC80211_MESH 781 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 782 do { (msh)->mshstats.name++; } while (0) 783 #else 784 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 785 do { } while (0) 786 #endif 787 788 /** 789 * enum ieee80211_sub_if_data_flags - virtual interface flags 790 * 791 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 792 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 793 * associated stations and deliver multicast frames both 794 * back to wireless media and to the local net stack. 795 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 796 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 797 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 798 * recovery 799 */ 800 enum ieee80211_sub_if_data_flags { 801 IEEE80211_SDATA_ALLMULTI = BIT(0), 802 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 803 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 804 IEEE80211_SDATA_IN_DRIVER = BIT(5), 805 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 806 }; 807 808 /** 809 * enum ieee80211_sdata_state_bits - virtual interface state bits 810 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 811 * mirrors netif_running() but is separate for interface type 812 * change handling while the interface is up 813 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 814 * mode, so queues are stopped 815 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 816 * to offchannel, reset when offchannel returns 817 */ 818 enum ieee80211_sdata_state_bits { 819 SDATA_STATE_RUNNING, 820 SDATA_STATE_OFFCHANNEL, 821 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 822 }; 823 824 /** 825 * enum ieee80211_chanctx_mode - channel context configuration mode 826 * 827 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 828 * multiple interfaces 829 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 830 * only by a single interface. This can be used for example for 831 * non-fixed channel IBSS. 832 */ 833 enum ieee80211_chanctx_mode { 834 IEEE80211_CHANCTX_SHARED, 835 IEEE80211_CHANCTX_EXCLUSIVE 836 }; 837 838 /** 839 * enum ieee80211_chanctx_replace_state - channel context replacement state 840 * 841 * This is used for channel context in-place reservations that require channel 842 * context switch/swap. 843 * 844 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 845 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 846 * by a (not yet registered) channel context pointed by %replace_ctx. 847 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 848 * replaces an existing channel context pointed to by %replace_ctx. 849 */ 850 enum ieee80211_chanctx_replace_state { 851 IEEE80211_CHANCTX_REPLACE_NONE, 852 IEEE80211_CHANCTX_WILL_BE_REPLACED, 853 IEEE80211_CHANCTX_REPLACES_OTHER, 854 }; 855 856 struct ieee80211_chanctx { 857 struct list_head list; 858 struct rcu_head rcu_head; 859 860 struct list_head assigned_links; 861 struct list_head reserved_links; 862 863 enum ieee80211_chanctx_replace_state replace_state; 864 struct ieee80211_chanctx *replace_ctx; 865 866 enum ieee80211_chanctx_mode mode; 867 bool driver_present; 868 869 struct ieee80211_chanctx_conf conf; 870 }; 871 872 struct mac80211_qos_map { 873 struct cfg80211_qos_map qos_map; 874 struct rcu_head rcu_head; 875 }; 876 877 enum txq_info_flags { 878 IEEE80211_TXQ_STOP, 879 IEEE80211_TXQ_AMPDU, 880 IEEE80211_TXQ_NO_AMSDU, 881 IEEE80211_TXQ_DIRTY, 882 }; 883 884 /** 885 * struct txq_info - per tid queue 886 * 887 * @tin: contains packets split into multiple flows 888 * @def_cvars: codel vars for the @tin's default_flow 889 * @cstats: code statistics for this queue 890 * @frags: used to keep fragments created after dequeue 891 * @schedule_order: used with ieee80211_local->active_txqs 892 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 893 * @flags: TXQ flags from &enum txq_info_flags 894 * @txq: the driver visible part 895 */ 896 struct txq_info { 897 struct fq_tin tin; 898 struct codel_vars def_cvars; 899 struct codel_stats cstats; 900 901 u16 schedule_round; 902 struct list_head schedule_order; 903 904 struct sk_buff_head frags; 905 906 unsigned long flags; 907 908 /* keep last! */ 909 struct ieee80211_txq txq; 910 }; 911 912 struct ieee80211_if_mntr { 913 u32 flags; 914 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 915 916 struct list_head list; 917 }; 918 919 /** 920 * struct ieee80211_if_nan - NAN state 921 * 922 * @conf: current NAN configuration 923 * @func_lock: lock for @func_inst_ids 924 * @function_inst_ids: a bitmap of available instance_id's 925 */ 926 struct ieee80211_if_nan { 927 struct cfg80211_nan_conf conf; 928 929 /* protects function_inst_ids */ 930 spinlock_t func_lock; 931 struct idr function_inst_ids; 932 }; 933 934 struct ieee80211_link_data_managed { 935 u8 bssid[ETH_ALEN] __aligned(2); 936 937 u8 dtim_period; 938 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 939 driver_smps_mode; /* smps mode request */ 940 941 ieee80211_conn_flags_t conn_flags; 942 943 s16 p2p_noa_index; 944 945 bool tdls_chan_switch_prohibited; 946 947 bool have_beacon; 948 bool tracking_signal_avg; 949 bool disable_wmm_tracking; 950 bool operating_11g_mode; 951 952 bool csa_waiting_bcn; 953 bool csa_ignored_same_chan; 954 struct wiphy_delayed_work chswitch_work; 955 956 struct wiphy_work request_smps_work; 957 /* used to reconfigure hardware SM PS */ 958 struct wiphy_work recalc_smps; 959 960 bool beacon_crc_valid; 961 u32 beacon_crc; 962 struct ewma_beacon_signal ave_beacon_signal; 963 int last_ave_beacon_signal; 964 965 /* 966 * Number of Beacon frames used in ave_beacon_signal. This can be used 967 * to avoid generating less reliable cqm events that would be based 968 * only on couple of received frames. 969 */ 970 unsigned int count_beacon_signal; 971 972 /* Number of times beacon loss was invoked. */ 973 unsigned int beacon_loss_count; 974 975 /* 976 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 977 * that triggered a cqm event. 0 indicates that no event has been 978 * generated for the current association. 979 */ 980 int last_cqm_event_signal; 981 982 int wmm_last_param_set; 983 int mu_edca_last_param_set; 984 985 u8 bss_param_ch_cnt; 986 987 struct cfg80211_bss *bss; 988 }; 989 990 struct ieee80211_link_data_ap { 991 struct beacon_data __rcu *beacon; 992 struct probe_resp __rcu *probe_resp; 993 struct fils_discovery_data __rcu *fils_discovery; 994 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 995 996 /* to be used after channel switch. */ 997 struct cfg80211_beacon_data *next_beacon; 998 }; 999 1000 struct ieee80211_link_data { 1001 struct ieee80211_sub_if_data *sdata; 1002 unsigned int link_id; 1003 1004 struct list_head assigned_chanctx_list; /* protected by wiphy mutex */ 1005 struct list_head reserved_chanctx_list; /* protected by wiphy mutex */ 1006 1007 /* multicast keys only */ 1008 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 1009 NUM_DEFAULT_MGMT_KEYS + 1010 NUM_DEFAULT_BEACON_KEYS]; 1011 struct ieee80211_key __rcu *default_multicast_key; 1012 struct ieee80211_key __rcu *default_mgmt_key; 1013 struct ieee80211_key __rcu *default_beacon_key; 1014 1015 struct wiphy_work csa_finalize_work; 1016 bool csa_block_tx; 1017 1018 bool operating_11g_mode; 1019 1020 struct cfg80211_chan_def csa_chandef; 1021 1022 struct wiphy_work color_change_finalize_work; 1023 struct delayed_work color_collision_detect_work; 1024 u64 color_bitmap; 1025 1026 /* context reservation -- protected with wiphy mutex */ 1027 struct ieee80211_chanctx *reserved_chanctx; 1028 struct cfg80211_chan_def reserved_chandef; 1029 bool reserved_radar_required; 1030 bool reserved_ready; 1031 1032 u8 needed_rx_chains; 1033 enum ieee80211_smps_mode smps_mode; 1034 1035 int user_power_level; /* in dBm */ 1036 int ap_power_level; /* in dBm */ 1037 1038 bool radar_required; 1039 struct wiphy_delayed_work dfs_cac_timer_work; 1040 1041 union { 1042 struct ieee80211_link_data_managed mgd; 1043 struct ieee80211_link_data_ap ap; 1044 } u; 1045 1046 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 1047 1048 struct ieee80211_bss_conf *conf; 1049 1050 #ifdef CONFIG_MAC80211_DEBUGFS 1051 struct dentry *debugfs_dir; 1052 #endif 1053 }; 1054 1055 struct ieee80211_sub_if_data { 1056 struct list_head list; 1057 1058 struct wireless_dev wdev; 1059 1060 /* keys */ 1061 struct list_head key_list; 1062 1063 /* count for keys needing tailroom space allocation */ 1064 int crypto_tx_tailroom_needed_cnt; 1065 int crypto_tx_tailroom_pending_dec; 1066 struct wiphy_delayed_work dec_tailroom_needed_wk; 1067 1068 struct net_device *dev; 1069 struct ieee80211_local *local; 1070 1071 unsigned int flags; 1072 1073 unsigned long state; 1074 1075 char name[IFNAMSIZ]; 1076 1077 struct ieee80211_fragment_cache frags; 1078 1079 /* TID bitmap for NoAck policy */ 1080 u16 noack_map; 1081 1082 /* bit field of ACM bits (BIT(802.1D tag)) */ 1083 u8 wmm_acm; 1084 1085 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1086 struct ieee80211_key __rcu *default_unicast_key; 1087 1088 u16 sequence_number; 1089 u16 mld_mcast_seq; 1090 __be16 control_port_protocol; 1091 bool control_port_no_encrypt; 1092 bool control_port_no_preauth; 1093 bool control_port_over_nl80211; 1094 1095 atomic_t num_tx_queued; 1096 struct mac80211_qos_map __rcu *qos_map; 1097 1098 struct wiphy_work work; 1099 struct sk_buff_head skb_queue; 1100 struct sk_buff_head status_queue; 1101 1102 /* 1103 * AP this belongs to: self in AP mode and 1104 * corresponding AP in VLAN mode, NULL for 1105 * all others (might be needed later in IBSS) 1106 */ 1107 struct ieee80211_if_ap *bss; 1108 1109 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1110 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1111 1112 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1113 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1114 1115 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1116 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1117 1118 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1119 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1120 bool beacon_rate_set; 1121 1122 union { 1123 struct ieee80211_if_ap ap; 1124 struct ieee80211_if_vlan vlan; 1125 struct ieee80211_if_managed mgd; 1126 struct ieee80211_if_ibss ibss; 1127 struct ieee80211_if_mesh mesh; 1128 struct ieee80211_if_ocb ocb; 1129 struct ieee80211_if_mntr mntr; 1130 struct ieee80211_if_nan nan; 1131 } u; 1132 1133 struct ieee80211_link_data deflink; 1134 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1135 1136 /* for ieee80211_set_active_links_async() */ 1137 struct wiphy_work activate_links_work; 1138 u16 desired_active_links; 1139 1140 #ifdef CONFIG_MAC80211_DEBUGFS 1141 struct { 1142 struct dentry *subdir_stations; 1143 struct dentry *default_unicast_key; 1144 struct dentry *default_multicast_key; 1145 struct dentry *default_mgmt_key; 1146 struct dentry *default_beacon_key; 1147 } debugfs; 1148 #endif 1149 1150 /* must be last, dynamically sized area in this! */ 1151 struct ieee80211_vif vif; 1152 }; 1153 1154 static inline 1155 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1156 { 1157 return container_of(p, struct ieee80211_sub_if_data, vif); 1158 } 1159 1160 #define sdata_dereference(p, sdata) \ 1161 wiphy_dereference(sdata->local->hw.wiphy, p) 1162 1163 static inline int 1164 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems, 1165 struct cfg80211_rnr_elems *rnr_elems, 1166 u8 i) 1167 { 1168 int len = 0; 1169 1170 if (!elems || !elems->cnt || i > elems->cnt) 1171 return 0; 1172 1173 if (i < elems->cnt) { 1174 len = elems->elem[i].len; 1175 if (rnr_elems) { 1176 len += rnr_elems->elem[i].len; 1177 for (i = elems->cnt; i < rnr_elems->cnt; i++) 1178 len += rnr_elems->elem[i].len; 1179 } 1180 return len; 1181 } 1182 1183 /* i == elems->cnt, calculate total length of all MBSSID elements */ 1184 for (i = 0; i < elems->cnt; i++) 1185 len += elems->elem[i].len; 1186 1187 if (rnr_elems) { 1188 for (i = 0; i < rnr_elems->cnt; i++) 1189 len += rnr_elems->elem[i].len; 1190 } 1191 1192 return len; 1193 } 1194 1195 enum { 1196 IEEE80211_RX_MSG = 1, 1197 IEEE80211_TX_STATUS_MSG = 2, 1198 }; 1199 1200 enum queue_stop_reason { 1201 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1202 IEEE80211_QUEUE_STOP_REASON_PS, 1203 IEEE80211_QUEUE_STOP_REASON_CSA, 1204 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1205 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1206 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1207 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1208 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1209 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1210 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1211 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1212 1213 IEEE80211_QUEUE_STOP_REASONS, 1214 }; 1215 1216 #ifdef CONFIG_MAC80211_LEDS 1217 struct tpt_led_trigger { 1218 char name[32]; 1219 const struct ieee80211_tpt_blink *blink_table; 1220 unsigned int blink_table_len; 1221 struct timer_list timer; 1222 struct ieee80211_local *local; 1223 unsigned long prev_traffic; 1224 unsigned long tx_bytes, rx_bytes; 1225 unsigned int active, want; 1226 bool running; 1227 }; 1228 #endif 1229 1230 /** 1231 * enum mac80211_scan_flags - currently active scan mode 1232 * 1233 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1234 * well be on the operating channel 1235 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1236 * determine if we are on the operating channel or not 1237 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1238 * channel. This should not interrupt normal traffic. 1239 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1240 * that the scan completed. 1241 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1242 * a scan complete for an aborted scan. 1243 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1244 * cancelled. 1245 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1246 * and could send a probe request after receiving a beacon. 1247 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1248 */ 1249 enum mac80211_scan_flags { 1250 SCAN_SW_SCANNING, 1251 SCAN_HW_SCANNING, 1252 SCAN_ONCHANNEL_SCANNING, 1253 SCAN_COMPLETED, 1254 SCAN_ABORTED, 1255 SCAN_HW_CANCELLED, 1256 SCAN_BEACON_WAIT, 1257 SCAN_BEACON_DONE, 1258 }; 1259 1260 /** 1261 * enum mac80211_scan_state - scan state machine states 1262 * 1263 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1264 * determines if we should keep on scanning or switch back to the 1265 * operating channel 1266 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1267 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1268 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1269 * send out data 1270 * @SCAN_RESUME: Resume the scan and scan the next channel 1271 * @SCAN_ABORT: Abort the scan and go back to operating channel 1272 */ 1273 enum mac80211_scan_state { 1274 SCAN_DECISION, 1275 SCAN_SET_CHANNEL, 1276 SCAN_SEND_PROBE, 1277 SCAN_SUSPEND, 1278 SCAN_RESUME, 1279 SCAN_ABORT, 1280 }; 1281 1282 DECLARE_STATIC_KEY_FALSE(aql_disable); 1283 1284 struct ieee80211_local { 1285 /* embed the driver visible part. 1286 * don't cast (use the static inlines below), but we keep 1287 * it first anyway so they become a no-op */ 1288 struct ieee80211_hw hw; 1289 1290 struct fq fq; 1291 struct codel_vars *cvars; 1292 struct codel_params cparams; 1293 1294 /* protects active_txqs and txqi->schedule_order */ 1295 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1296 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1297 u16 schedule_round[IEEE80211_NUM_ACS]; 1298 1299 /* serializes ieee80211_handle_wake_tx_queue */ 1300 spinlock_t handle_wake_tx_queue_lock; 1301 1302 u16 airtime_flags; 1303 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1304 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1305 u32 aql_threshold; 1306 atomic_t aql_total_pending_airtime; 1307 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1308 1309 const struct ieee80211_ops *ops; 1310 1311 /* 1312 * private workqueue to mac80211. mac80211 makes this accessible 1313 * via ieee80211_queue_work() 1314 */ 1315 struct workqueue_struct *workqueue; 1316 1317 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1318 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1319 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1320 spinlock_t queue_stop_reason_lock; 1321 1322 int open_count; 1323 int monitors, cooked_mntrs; 1324 /* number of interfaces with corresponding FIF_ flags */ 1325 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1326 fif_probe_req; 1327 bool probe_req_reg; 1328 bool rx_mcast_action_reg; 1329 unsigned int filter_flags; /* FIF_* */ 1330 1331 bool wiphy_ciphers_allocated; 1332 1333 bool use_chanctx; 1334 1335 /* protects the aggregated multicast list and filter calls */ 1336 spinlock_t filter_lock; 1337 1338 /* used for uploading changed mc list */ 1339 struct wiphy_work reconfig_filter; 1340 1341 /* aggregated multicast list */ 1342 struct netdev_hw_addr_list mc_list; 1343 1344 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1345 1346 /* 1347 * suspended is true if we finished all the suspend _and_ we have 1348 * not yet come up from resume. This is to be used by mac80211 1349 * to ensure driver sanity during suspend and mac80211's own 1350 * sanity. It can eventually be used for WoW as well. 1351 */ 1352 bool suspended; 1353 1354 /* suspending is true during the whole suspend process */ 1355 bool suspending; 1356 1357 /* 1358 * Resuming is true while suspended, but when we're reprogramming the 1359 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1360 * again even though some other parts of the stack are still suspended 1361 * and we still drop received frames to avoid waking the stack. 1362 */ 1363 bool resuming; 1364 1365 /* 1366 * quiescing is true during the suspend process _only_ to 1367 * ease timer cancelling etc. 1368 */ 1369 bool quiescing; 1370 1371 /* device is started */ 1372 bool started; 1373 1374 /* device is during a HW reconfig */ 1375 bool in_reconfig; 1376 1377 /* reconfiguration failed ... suppress some warnings etc. */ 1378 bool reconfig_failure; 1379 1380 /* wowlan is enabled -- don't reconfig on resume */ 1381 bool wowlan; 1382 1383 struct wiphy_work radar_detected_work; 1384 1385 /* number of RX chains the hardware has */ 1386 u8 rx_chains; 1387 1388 /* bitmap of which sbands were copied */ 1389 u8 sband_allocated; 1390 1391 int tx_headroom; /* required headroom for hardware/radiotap */ 1392 1393 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1394 * added to skb_queue will be processed, but frames in 1395 * skb_queue_unreliable may be dropped if the total length of these 1396 * queues increases over the limit. */ 1397 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1398 struct tasklet_struct tasklet; 1399 struct sk_buff_head skb_queue; 1400 struct sk_buff_head skb_queue_unreliable; 1401 1402 spinlock_t rx_path_lock; 1403 1404 /* Station data */ 1405 /* 1406 * The list, hash table and counter are protected 1407 * by the wiphy mutex, reads are done with RCU. 1408 */ 1409 spinlock_t tim_lock; 1410 unsigned long num_sta; 1411 struct list_head sta_list; 1412 struct rhltable sta_hash; 1413 struct rhltable link_sta_hash; 1414 struct timer_list sta_cleanup; 1415 int sta_generation; 1416 1417 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1418 struct tasklet_struct tx_pending_tasklet; 1419 struct tasklet_struct wake_txqs_tasklet; 1420 1421 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1422 1423 /* number of interfaces with allmulti RX */ 1424 atomic_t iff_allmultis; 1425 1426 struct rate_control_ref *rate_ctrl; 1427 1428 struct arc4_ctx wep_tx_ctx; 1429 struct arc4_ctx wep_rx_ctx; 1430 u32 wep_iv; 1431 1432 /* see iface.c */ 1433 struct list_head interfaces; 1434 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1435 struct mutex iflist_mtx; 1436 1437 /* Scanning and BSS list */ 1438 unsigned long scanning; 1439 struct cfg80211_ssid scan_ssid; 1440 struct cfg80211_scan_request *int_scan_req; 1441 struct cfg80211_scan_request __rcu *scan_req; 1442 struct ieee80211_scan_request *hw_scan_req; 1443 struct cfg80211_chan_def scan_chandef; 1444 enum nl80211_band hw_scan_band; 1445 int scan_channel_idx; 1446 int scan_ies_len; 1447 int hw_scan_ies_bufsize; 1448 struct cfg80211_scan_info scan_info; 1449 1450 struct wiphy_work sched_scan_stopped_work; 1451 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1452 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1453 u8 scan_addr[ETH_ALEN]; 1454 1455 unsigned long leave_oper_channel_time; 1456 enum mac80211_scan_state next_scan_state; 1457 struct wiphy_delayed_work scan_work; 1458 struct ieee80211_sub_if_data __rcu *scan_sdata; 1459 /* For backward compatibility only -- do not use */ 1460 struct cfg80211_chan_def _oper_chandef; 1461 1462 /* Temporary remain-on-channel for off-channel operations */ 1463 struct ieee80211_channel *tmp_channel; 1464 1465 /* channel contexts */ 1466 struct list_head chanctx_list; 1467 1468 #ifdef CONFIG_MAC80211_LEDS 1469 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1470 struct led_trigger tpt_led; 1471 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1472 atomic_t radio_led_active, tpt_led_active; 1473 struct tpt_led_trigger *tpt_led_trigger; 1474 #endif 1475 1476 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1477 /* SNMP counters */ 1478 /* dot11CountersTable */ 1479 u32 dot11TransmittedFragmentCount; 1480 u32 dot11MulticastTransmittedFrameCount; 1481 u32 dot11FailedCount; 1482 u32 dot11RetryCount; 1483 u32 dot11MultipleRetryCount; 1484 u32 dot11FrameDuplicateCount; 1485 u32 dot11ReceivedFragmentCount; 1486 u32 dot11MulticastReceivedFrameCount; 1487 u32 dot11TransmittedFrameCount; 1488 1489 /* TX/RX handler statistics */ 1490 unsigned int tx_handlers_drop; 1491 unsigned int tx_handlers_queued; 1492 unsigned int tx_handlers_drop_wep; 1493 unsigned int tx_handlers_drop_not_assoc; 1494 unsigned int tx_handlers_drop_unauth_port; 1495 unsigned int rx_handlers_drop; 1496 unsigned int rx_handlers_queued; 1497 unsigned int rx_handlers_drop_nullfunc; 1498 unsigned int rx_handlers_drop_defrag; 1499 unsigned int tx_expand_skb_head; 1500 unsigned int tx_expand_skb_head_cloned; 1501 unsigned int rx_expand_skb_head_defrag; 1502 unsigned int rx_handlers_fragments; 1503 unsigned int tx_status_drop; 1504 #define I802_DEBUG_INC(c) (c)++ 1505 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1506 #define I802_DEBUG_INC(c) do { } while (0) 1507 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1508 1509 1510 int total_ps_buffered; /* total number of all buffered unicast and 1511 * multicast packets for power saving stations 1512 */ 1513 1514 bool pspolling; 1515 /* 1516 * PS can only be enabled when we have exactly one managed 1517 * interface (and monitors) in PS, this then points there. 1518 */ 1519 struct ieee80211_sub_if_data *ps_sdata; 1520 struct wiphy_work dynamic_ps_enable_work; 1521 struct wiphy_work dynamic_ps_disable_work; 1522 struct timer_list dynamic_ps_timer; 1523 struct notifier_block ifa_notifier; 1524 struct notifier_block ifa6_notifier; 1525 1526 /* 1527 * The dynamic ps timeout configured from user space via WEXT - 1528 * this will override whatever chosen by mac80211 internally. 1529 */ 1530 int dynamic_ps_forced_timeout; 1531 1532 int user_power_level; /* in dBm, for all interfaces */ 1533 1534 enum ieee80211_smps_mode smps_mode; 1535 1536 struct work_struct restart_work; 1537 1538 #ifdef CONFIG_MAC80211_DEBUGFS 1539 struct local_debugfsdentries { 1540 struct dentry *rcdir; 1541 struct dentry *keys; 1542 } debugfs; 1543 bool force_tx_status; 1544 #endif 1545 1546 /* 1547 * Remain-on-channel support 1548 */ 1549 struct wiphy_delayed_work roc_work; 1550 struct list_head roc_list; 1551 struct wiphy_work hw_roc_start, hw_roc_done; 1552 unsigned long hw_roc_start_time; 1553 u64 roc_cookie_counter; 1554 1555 struct idr ack_status_frames; 1556 spinlock_t ack_status_lock; 1557 1558 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1559 1560 /* virtual monitor interface */ 1561 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1562 struct cfg80211_chan_def monitor_chandef; 1563 1564 /* extended capabilities provided by mac80211 */ 1565 u8 ext_capa[8]; 1566 1567 bool wbrf_supported; 1568 }; 1569 1570 static inline struct ieee80211_sub_if_data * 1571 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1572 { 1573 return netdev_priv(dev); 1574 } 1575 1576 static inline struct ieee80211_sub_if_data * 1577 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1578 { 1579 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1580 } 1581 1582 static inline struct ieee80211_supported_band * 1583 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1584 { 1585 struct ieee80211_local *local = sdata->local; 1586 struct ieee80211_chanctx_conf *chanctx_conf; 1587 enum nl80211_band band; 1588 1589 WARN_ON(ieee80211_vif_is_mld(&sdata->vif)); 1590 1591 rcu_read_lock(); 1592 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1593 1594 if (!chanctx_conf) { 1595 rcu_read_unlock(); 1596 return NULL; 1597 } 1598 1599 band = chanctx_conf->def.chan->band; 1600 rcu_read_unlock(); 1601 1602 return local->hw.wiphy->bands[band]; 1603 } 1604 1605 static inline struct ieee80211_supported_band * 1606 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1607 { 1608 struct ieee80211_local *local = link->sdata->local; 1609 struct ieee80211_chanctx_conf *chanctx_conf; 1610 enum nl80211_band band; 1611 1612 rcu_read_lock(); 1613 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1614 if (!chanctx_conf) { 1615 rcu_read_unlock(); 1616 return NULL; 1617 } 1618 1619 band = chanctx_conf->def.chan->band; 1620 rcu_read_unlock(); 1621 1622 return local->hw.wiphy->bands[band]; 1623 } 1624 1625 /* this struct holds the value parsing from channel switch IE */ 1626 struct ieee80211_csa_ie { 1627 struct cfg80211_chan_def chandef; 1628 u8 mode; 1629 u8 count; 1630 u8 ttl; 1631 u16 pre_value; 1632 u16 reason_code; 1633 u32 max_switch_time; 1634 }; 1635 1636 /* Parsed Information Elements */ 1637 struct ieee802_11_elems { 1638 const u8 *ie_start; 1639 size_t total_len; 1640 u32 crc; 1641 1642 /* pointers to IEs */ 1643 const struct ieee80211_tdls_lnkie *lnk_id; 1644 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1645 const u8 *ext_capab; 1646 const u8 *ssid; 1647 const u8 *supp_rates; 1648 const u8 *ds_params; 1649 const struct ieee80211_tim_ie *tim; 1650 const u8 *rsn; 1651 const u8 *rsnx; 1652 const u8 *erp_info; 1653 const u8 *ext_supp_rates; 1654 const u8 *wmm_info; 1655 const u8 *wmm_param; 1656 const struct ieee80211_ht_cap *ht_cap_elem; 1657 const struct ieee80211_ht_operation *ht_operation; 1658 const struct ieee80211_vht_cap *vht_cap_elem; 1659 const struct ieee80211_vht_operation *vht_operation; 1660 const struct ieee80211_meshconf_ie *mesh_config; 1661 const u8 *he_cap; 1662 const struct ieee80211_he_operation *he_operation; 1663 const struct ieee80211_he_spr *he_spr; 1664 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1665 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1666 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1667 const u8 *uora_element; 1668 const u8 *mesh_id; 1669 const u8 *peering; 1670 const __le16 *awake_window; 1671 const u8 *preq; 1672 const u8 *prep; 1673 const u8 *perr; 1674 const struct ieee80211_rann_ie *rann; 1675 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1676 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1677 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1678 const u8 *max_channel_switch_time; 1679 const u8 *country_elem; 1680 const u8 *pwr_constr_elem; 1681 const u8 *cisco_dtpc_elem; 1682 const struct ieee80211_timeout_interval_ie *timeout_int; 1683 const u8 *opmode_notif; 1684 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1685 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1686 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1687 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1688 const struct ieee80211_bssid_index *bssid_index; 1689 u8 max_bssid_indicator; 1690 u8 dtim_count; 1691 u8 dtim_period; 1692 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1693 const struct ieee80211_s1g_cap *s1g_capab; 1694 const struct ieee80211_s1g_oper_ie *s1g_oper; 1695 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1696 const struct ieee80211_aid_response_ie *aid_resp; 1697 const struct ieee80211_eht_cap_elem *eht_cap; 1698 const struct ieee80211_eht_operation *eht_operation; 1699 const struct ieee80211_multi_link_elem *ml_basic; 1700 const struct ieee80211_multi_link_elem *ml_reconf; 1701 const struct ieee80211_bandwidth_indication *bandwidth_indication; 1702 const struct ieee80211_ttlm_elem *ttlm[IEEE80211_TTLM_MAX_CNT]; 1703 1704 /* length of them, respectively */ 1705 u8 ext_capab_len; 1706 u8 ssid_len; 1707 u8 supp_rates_len; 1708 u8 tim_len; 1709 u8 rsn_len; 1710 u8 rsnx_len; 1711 u8 ext_supp_rates_len; 1712 u8 wmm_info_len; 1713 u8 wmm_param_len; 1714 u8 he_cap_len; 1715 u8 mesh_id_len; 1716 u8 peering_len; 1717 u8 preq_len; 1718 u8 prep_len; 1719 u8 perr_len; 1720 u8 country_elem_len; 1721 u8 bssid_index_len; 1722 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1723 u8 tx_pwr_env_num; 1724 u8 eht_cap_len; 1725 1726 /* mult-link element can be de-fragmented and thus u8 is not sufficient */ 1727 size_t ml_basic_len; 1728 size_t ml_reconf_len; 1729 1730 /* The basic Multi-Link element in the original IEs */ 1731 const struct element *ml_basic_elem; 1732 1733 /* The reconfiguration Multi-Link element in the original IEs */ 1734 const struct element *ml_reconf_elem; 1735 1736 u8 ttlm_num; 1737 1738 /* 1739 * store the per station profile pointer and length in case that the 1740 * parsing also handled Multi-Link element parsing for a specific link 1741 * ID. 1742 */ 1743 struct ieee80211_mle_per_sta_profile *prof; 1744 size_t sta_prof_len; 1745 1746 /* whether a parse error occurred while retrieving these elements */ 1747 bool parse_error; 1748 1749 /* 1750 * scratch buffer that can be used for various element parsing related 1751 * tasks, e.g., element de-fragmentation etc. 1752 */ 1753 size_t scratch_len; 1754 u8 *scratch_pos; 1755 u8 scratch[] __counted_by(scratch_len); 1756 }; 1757 1758 static inline struct ieee80211_local *hw_to_local( 1759 struct ieee80211_hw *hw) 1760 { 1761 return container_of(hw, struct ieee80211_local, hw); 1762 } 1763 1764 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1765 { 1766 return container_of(txq, struct txq_info, txq); 1767 } 1768 1769 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1770 { 1771 struct txq_info *txqi = to_txq_info(txq); 1772 1773 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1774 } 1775 1776 static inline bool 1777 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1778 { 1779 return status->flag & RX_FLAG_MACTIME; 1780 } 1781 1782 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1783 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1784 1785 /* This function returns the number of multicast stations connected to this 1786 * interface. It returns -1 if that number is not tracked, that is for netdevs 1787 * not in AP or AP_VLAN mode or when using 4addr. 1788 */ 1789 static inline int 1790 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1791 { 1792 if (sdata->vif.type == NL80211_IFTYPE_AP) 1793 return atomic_read(&sdata->u.ap.num_mcast_sta); 1794 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1795 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1796 return -1; 1797 } 1798 1799 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1800 struct ieee80211_rx_status *status, 1801 unsigned int mpdu_len, 1802 unsigned int mpdu_offset); 1803 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1804 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1805 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1806 u64 changed); 1807 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1808 u64 changed); 1809 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1810 struct ieee80211_link_data *link, 1811 u64 changed); 1812 void ieee80211_configure_filter(struct ieee80211_local *local); 1813 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1814 1815 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1816 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1817 u64 *cookie, gfp_t gfp); 1818 1819 void ieee80211_check_fast_rx(struct sta_info *sta); 1820 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1821 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1822 void ieee80211_clear_fast_rx(struct sta_info *sta); 1823 1824 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1825 const u8 *addr, int *out_link_id); 1826 1827 /* STA code */ 1828 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1829 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1830 struct cfg80211_auth_request *req); 1831 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1832 struct cfg80211_assoc_request *req); 1833 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1834 struct cfg80211_deauth_request *req); 1835 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1836 struct cfg80211_disassoc_request *req); 1837 void ieee80211_send_pspoll(struct ieee80211_local *local, 1838 struct ieee80211_sub_if_data *sdata); 1839 void ieee80211_recalc_ps(struct ieee80211_local *local); 1840 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1841 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1842 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1843 struct sk_buff *skb); 1844 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1845 struct sk_buff *skb); 1846 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1847 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1848 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1849 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1850 __le16 fc, bool acked); 1851 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1852 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1853 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1854 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1855 u8 reason, bool tx); 1856 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1857 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1858 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link); 1859 1860 /* IBSS code */ 1861 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1862 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1863 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1864 const u8 *bssid, const u8 *addr, u32 supp_rates); 1865 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1866 struct cfg80211_ibss_params *params); 1867 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1868 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1869 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1870 struct sk_buff *skb); 1871 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1872 struct cfg80211_csa_settings *csa_settings, 1873 u64 *changed); 1874 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata, 1875 u64 *changed); 1876 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1877 1878 /* OCB code */ 1879 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1880 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1881 const u8 *bssid, const u8 *addr, u32 supp_rates); 1882 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1883 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1884 struct ocb_setup *setup); 1885 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1886 1887 /* mesh code */ 1888 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1889 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1890 struct sk_buff *skb); 1891 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1892 struct cfg80211_csa_settings *csa_settings, 1893 u64 *changed); 1894 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata, 1895 u64 *changed); 1896 1897 /* scan/BSS handling */ 1898 void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work); 1899 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1900 const u8 *ssid, u8 ssid_len, 1901 struct ieee80211_channel **channels, 1902 unsigned int n_channels); 1903 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1904 struct cfg80211_scan_request *req); 1905 void ieee80211_scan_cancel(struct ieee80211_local *local); 1906 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1907 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1908 1909 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss, 1910 const struct cfg80211_bss_ies *ies, void *data); 1911 1912 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1913 struct ieee80211_bss * 1914 ieee80211_bss_info_update(struct ieee80211_local *local, 1915 struct ieee80211_rx_status *rx_status, 1916 struct ieee80211_mgmt *mgmt, 1917 size_t len, 1918 struct ieee80211_channel *channel); 1919 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1920 struct ieee80211_bss *bss); 1921 1922 /* scheduled scan handling */ 1923 int 1924 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1925 struct cfg80211_sched_scan_request *req); 1926 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1927 struct cfg80211_sched_scan_request *req); 1928 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1929 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1930 void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy, 1931 struct wiphy_work *work); 1932 1933 /* off-channel/mgmt-tx */ 1934 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1935 void ieee80211_offchannel_return(struct ieee80211_local *local); 1936 void ieee80211_roc_setup(struct ieee80211_local *local); 1937 void ieee80211_start_next_roc(struct ieee80211_local *local); 1938 void ieee80211_roc_purge(struct ieee80211_local *local, 1939 struct ieee80211_sub_if_data *sdata); 1940 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1941 struct ieee80211_channel *chan, 1942 unsigned int duration, u64 *cookie); 1943 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1944 struct wireless_dev *wdev, u64 cookie); 1945 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1946 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1947 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1948 struct wireless_dev *wdev, u64 cookie); 1949 1950 /* channel switch handling */ 1951 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work); 1952 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1953 struct cfg80211_csa_settings *params); 1954 1955 /* color change handling */ 1956 void ieee80211_color_change_finalize_work(struct wiphy *wiphy, 1957 struct wiphy_work *work); 1958 void ieee80211_color_collision_detection_work(struct work_struct *work); 1959 1960 /* interface handling */ 1961 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1962 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1963 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \ 1964 NETIF_F_HW_TC) 1965 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1966 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1967 MAC80211_SUPPORTED_FEATURES_RX) 1968 1969 int ieee80211_iface_init(void); 1970 void ieee80211_iface_exit(void); 1971 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1972 unsigned char name_assign_type, 1973 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1974 struct vif_params *params); 1975 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1976 enum nl80211_iftype type); 1977 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1978 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1979 u32 ieee80211_idle_off(struct ieee80211_local *local); 1980 void ieee80211_recalc_idle(struct ieee80211_local *local); 1981 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1982 const int offset); 1983 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1984 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1985 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1986 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1987 1988 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1989 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1990 bool update_bss); 1991 void ieee80211_recalc_offload(struct ieee80211_local *local); 1992 1993 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1994 { 1995 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1996 } 1997 1998 /* link handling */ 1999 void ieee80211_link_setup(struct ieee80211_link_data *link); 2000 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, 2001 int link_id, 2002 struct ieee80211_link_data *link, 2003 struct ieee80211_bss_conf *link_conf); 2004 void ieee80211_link_stop(struct ieee80211_link_data *link); 2005 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 2006 u16 new_links, u16 dormant_links); 2007 static inline void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata) 2008 { 2009 ieee80211_vif_set_links(sdata, 0, 0); 2010 } 2011 2012 /* tx handling */ 2013 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 2014 void ieee80211_tx_pending(struct tasklet_struct *t); 2015 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 2016 struct net_device *dev); 2017 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 2018 struct net_device *dev); 2019 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 2020 struct net_device *dev); 2021 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 2022 struct net_device *dev, 2023 u32 info_flags, 2024 u32 ctrl_flags, 2025 u64 *cookie); 2026 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 2027 struct sk_buff_head *skbs); 2028 struct sk_buff * 2029 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2030 struct sk_buff *skb, u32 info_flags); 2031 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2032 int retry_count, bool send_to_cooked, 2033 struct ieee80211_tx_status *status); 2034 2035 void ieee80211_check_fast_xmit(struct sta_info *sta); 2036 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2037 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2038 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2039 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2040 const u8 *buf, size_t len, 2041 const u8 *dest, __be16 proto, bool unencrypted, 2042 int link_id, u64 *cookie); 2043 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2044 const u8 *buf, size_t len); 2045 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, 2046 struct sta_info *sta, 2047 struct ieee80211_fast_tx *fast_tx, 2048 struct sk_buff *skb, bool ampdu, 2049 const u8 *da, const u8 *sa); 2050 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, 2051 struct sta_info *sta, struct sk_buff *skb); 2052 2053 /* HT */ 2054 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2055 struct ieee80211_sta_ht_cap *ht_cap); 2056 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2057 struct ieee80211_supported_band *sband, 2058 const struct ieee80211_ht_cap *ht_cap_ie, 2059 struct link_sta_info *link_sta); 2060 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2061 const u8 *da, u16 tid, 2062 u16 initiator, u16 reason_code); 2063 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2064 enum ieee80211_smps_mode smps, const u8 *da, 2065 const u8 *bssid, int link_id); 2066 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2067 enum ieee80211_smps_mode smps_mode_new); 2068 2069 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2070 u16 initiator, u16 reason, bool stop); 2071 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 2072 u8 dialog_token, u16 timeout, 2073 u16 start_seq_num, u16 ba_policy, u16 tid, 2074 u16 buf_size, bool tx, bool auto_seq, 2075 const struct ieee80211_addba_ext_ie *addbaext); 2076 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2077 enum ieee80211_agg_stop_reason reason); 2078 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2079 struct sta_info *sta, 2080 struct ieee80211_mgmt *mgmt, size_t len); 2081 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2082 struct sta_info *sta, 2083 struct ieee80211_mgmt *mgmt, 2084 size_t len); 2085 void ieee80211_process_addba_request(struct ieee80211_local *local, 2086 struct sta_info *sta, 2087 struct ieee80211_mgmt *mgmt, 2088 size_t len); 2089 2090 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2091 enum ieee80211_agg_stop_reason reason); 2092 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2093 struct tid_ampdu_tx *tid_tx); 2094 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2095 struct tid_ampdu_tx *tid_tx); 2096 void ieee80211_ba_session_work(struct wiphy *wiphy, struct wiphy_work *work); 2097 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2098 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2099 2100 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2101 enum nl80211_smps_mode 2102 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2103 2104 /* VHT */ 2105 void 2106 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2107 struct ieee80211_supported_band *sband, 2108 const struct ieee80211_vht_cap *vht_cap_ie, 2109 const struct ieee80211_vht_cap *vht_cap_ie2, 2110 struct link_sta_info *link_sta); 2111 enum ieee80211_sta_rx_bandwidth 2112 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta); 2113 enum ieee80211_sta_rx_bandwidth 2114 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta); 2115 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta); 2116 enum ieee80211_sta_rx_bandwidth 2117 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2118 enum nl80211_chan_width 2119 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2120 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2121 struct ieee80211_link_data *link, 2122 struct ieee80211_mgmt *mgmt); 2123 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2124 struct link_sta_info *sta, 2125 u8 opmode, enum nl80211_band band); 2126 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2127 struct link_sta_info *sta, 2128 u8 opmode, enum nl80211_band band); 2129 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2130 struct ieee80211_sta_vht_cap *vht_cap); 2131 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2132 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2133 enum nl80211_chan_width 2134 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2135 2136 /* HE */ 2137 void 2138 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2139 struct ieee80211_supported_band *sband, 2140 const u8 *he_cap_ie, u8 he_cap_len, 2141 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2142 struct link_sta_info *link_sta); 2143 void 2144 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2145 const struct ieee80211_he_spr *he_spr_ie_elem); 2146 2147 void 2148 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2149 const struct ieee80211_he_operation *he_op_ie_elem); 2150 2151 /* S1G */ 2152 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2153 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2154 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2155 struct sk_buff *skb); 2156 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2157 struct sk_buff *skb); 2158 2159 /* Spectrum management */ 2160 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2161 struct ieee80211_mgmt *mgmt, 2162 size_t len); 2163 /** 2164 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2165 * @sdata: the sdata of the interface which has received the frame 2166 * @elems: parsed 802.11 elements received with the frame 2167 * @current_band: indicates the current band 2168 * @vht_cap_info: VHT capabilities of the transmitter 2169 * @conn_flags: contains information about own capabilities and restrictions 2170 * to decide which channel switch announcements can be accepted, using 2171 * flags from &enum ieee80211_conn_flags. 2172 * @bssid: the currently connected bssid (for reporting) 2173 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2174 * All of them will be filled with if success only. 2175 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2176 */ 2177 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2178 struct ieee802_11_elems *elems, 2179 enum nl80211_band current_band, 2180 u32 vht_cap_info, 2181 ieee80211_conn_flags_t conn_flags, u8 *bssid, 2182 struct ieee80211_csa_ie *csa_ie); 2183 2184 /* Suspend/resume and hw reconfiguration */ 2185 int ieee80211_reconfig(struct ieee80211_local *local); 2186 void ieee80211_stop_device(struct ieee80211_local *local); 2187 2188 int __ieee80211_suspend(struct ieee80211_hw *hw, 2189 struct cfg80211_wowlan *wowlan); 2190 2191 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2192 { 2193 struct ieee80211_local *local = hw_to_local(hw); 2194 2195 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2196 !test_bit(SCAN_COMPLETED, &local->scanning), 2197 "%s: resume with hardware scan still in progress\n", 2198 wiphy_name(hw->wiphy)); 2199 2200 return ieee80211_reconfig(hw_to_local(hw)); 2201 } 2202 2203 /* utility functions/constants */ 2204 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2205 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2206 int rate, int erp, int short_preamble); 2207 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2208 struct ieee80211_tx_queue_params *qparam, 2209 int ac); 2210 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2211 bool bss_notify, bool enable_qos); 2212 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2213 struct sta_info *sta, struct sk_buff *skb); 2214 2215 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2216 struct sk_buff *skb, int tid, int link_id, 2217 enum nl80211_band band); 2218 2219 /* sta_out needs to be checked for ERR_PTR() before using */ 2220 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2221 struct sk_buff *skb, 2222 struct sta_info **sta_out); 2223 2224 static inline void 2225 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2226 struct sk_buff *skb, int tid, 2227 enum nl80211_band band) 2228 { 2229 rcu_read_lock(); 2230 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2231 rcu_read_unlock(); 2232 } 2233 2234 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2235 struct sk_buff *skb, int tid, int link_id); 2236 2237 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2238 struct sk_buff *skb) 2239 { 2240 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2241 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2242 } 2243 2244 /** 2245 * struct ieee80211_elems_parse_params - element parsing parameters 2246 * @start: pointer to the elements 2247 * @len: length of the elements 2248 * @action: %true if the elements came from an action frame 2249 * @filter: bitmap of element IDs to filter out while calculating 2250 * the element CRC 2251 * @crc: CRC starting value 2252 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2253 * represent a non-transmitting BSS in which case the data 2254 * for that non-transmitting BSS is returned 2255 * @link_id: the link ID to parse elements for, if a STA profile 2256 * is present in the multi-link element, or -1 to ignore; 2257 * note that the code currently assumes parsing an association 2258 * (or re-association) response frame if this is given 2259 * @from_ap: frame is received from an AP (currently used only 2260 * for EHT capabilities parsing) 2261 */ 2262 struct ieee80211_elems_parse_params { 2263 const u8 *start; 2264 size_t len; 2265 bool action; 2266 u64 filter; 2267 u32 crc; 2268 struct cfg80211_bss *bss; 2269 int link_id; 2270 bool from_ap; 2271 }; 2272 2273 struct ieee802_11_elems * 2274 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2275 2276 static inline struct ieee802_11_elems * 2277 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2278 u64 filter, u32 crc, 2279 struct cfg80211_bss *bss) 2280 { 2281 struct ieee80211_elems_parse_params params = { 2282 .start = start, 2283 .len = len, 2284 .action = action, 2285 .filter = filter, 2286 .crc = crc, 2287 .bss = bss, 2288 .link_id = -1, 2289 }; 2290 2291 return ieee802_11_parse_elems_full(¶ms); 2292 } 2293 2294 static inline struct ieee802_11_elems * 2295 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2296 struct cfg80211_bss *bss) 2297 { 2298 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2299 } 2300 2301 extern const int ieee802_1d_to_ac[8]; 2302 2303 static inline int ieee80211_ac_from_tid(int tid) 2304 { 2305 return ieee802_1d_to_ac[tid & 7]; 2306 } 2307 2308 void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy, 2309 struct wiphy_work *work); 2310 void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy, 2311 struct wiphy_work *work); 2312 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2313 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2314 struct ieee80211_sub_if_data *sdata, 2315 bool powersave); 2316 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2317 struct ieee80211_sub_if_data *sdata); 2318 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2319 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2320 2321 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2322 unsigned long queues, 2323 enum queue_stop_reason reason, 2324 bool refcounted); 2325 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2326 struct ieee80211_sub_if_data *sdata, 2327 enum queue_stop_reason reason); 2328 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2329 struct ieee80211_sub_if_data *sdata, 2330 enum queue_stop_reason reason); 2331 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2332 unsigned long queues, 2333 enum queue_stop_reason reason, 2334 bool refcounted); 2335 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2336 enum queue_stop_reason reason, 2337 bool refcounted); 2338 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2339 enum queue_stop_reason reason, 2340 bool refcounted); 2341 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2342 struct sk_buff *skb); 2343 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2344 struct sk_buff_head *skbs); 2345 void ieee80211_flush_queues(struct ieee80211_local *local, 2346 struct ieee80211_sub_if_data *sdata, bool drop); 2347 void __ieee80211_flush_queues(struct ieee80211_local *local, 2348 struct ieee80211_sub_if_data *sdata, 2349 unsigned int queues, bool drop); 2350 2351 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2352 { 2353 /* 2354 * It's unsafe to try to do any work during reconfigure flow. 2355 * When the flow ends the work will be requeued. 2356 */ 2357 if (local->in_reconfig) 2358 return false; 2359 2360 /* 2361 * If quiescing is set, we are racing with __ieee80211_suspend. 2362 * __ieee80211_suspend flushes the workers after setting quiescing, 2363 * and we check quiescing / suspended before enqueing new workers. 2364 * We should abort the worker to avoid the races below. 2365 */ 2366 if (local->quiescing) 2367 return false; 2368 2369 /* 2370 * We might already be suspended if the following scenario occurs: 2371 * __ieee80211_suspend Control path 2372 * 2373 * if (local->quiescing) 2374 * return; 2375 * local->quiescing = true; 2376 * flush_workqueue(); 2377 * queue_work(...); 2378 * local->suspended = true; 2379 * local->quiescing = false; 2380 * worker starts running... 2381 */ 2382 if (local->suspended) 2383 return false; 2384 2385 return true; 2386 } 2387 2388 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2389 void ieee80211_txq_set_params(struct ieee80211_local *local); 2390 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2391 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2392 struct sta_info *sta, 2393 struct txq_info *txq, int tid); 2394 void ieee80211_txq_purge(struct ieee80211_local *local, 2395 struct txq_info *txqi); 2396 void ieee80211_purge_sta_txqs(struct sta_info *sta); 2397 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2398 struct ieee80211_sub_if_data *sdata); 2399 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2400 struct txq_info *txqi); 2401 void ieee80211_wake_txqs(struct tasklet_struct *t); 2402 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2403 u16 transaction, u16 auth_alg, u16 status, 2404 const u8 *extra, size_t extra_len, const u8 *bssid, 2405 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2406 u32 tx_flags); 2407 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2408 const u8 *da, const u8 *bssid, 2409 u16 stype, u16 reason, 2410 bool send_frame, u8 *frame_buf); 2411 u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end); 2412 2413 enum { 2414 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2415 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2416 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2417 }; 2418 2419 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2420 size_t buffer_len, 2421 struct ieee80211_scan_ies *ie_desc, 2422 const u8 *ie, size_t ie_len, 2423 u8 bands_used, u32 *rate_masks, 2424 struct cfg80211_chan_def *chandef, 2425 u32 flags); 2426 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2427 const u8 *src, const u8 *dst, 2428 u32 ratemask, 2429 struct ieee80211_channel *chan, 2430 const u8 *ssid, size_t ssid_len, 2431 const u8 *ie, size_t ie_len, 2432 u32 flags); 2433 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2434 struct ieee802_11_elems *elems, 2435 enum nl80211_band band, u32 *basic_rates); 2436 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2437 struct ieee80211_link_data *link, 2438 enum ieee80211_smps_mode smps_mode); 2439 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2440 struct ieee80211_link_data *link); 2441 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2442 int link_id); 2443 2444 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2445 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2446 u16 cap); 2447 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2448 const struct cfg80211_chan_def *chandef, 2449 u16 prot_mode, bool rifs_mode); 2450 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2451 const struct cfg80211_chan_def *chandef); 2452 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2453 u32 cap); 2454 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2455 const struct cfg80211_chan_def *chandef); 2456 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2457 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, 2458 const struct ieee80211_sta_he_cap *he_cap, 2459 u8 *end); 2460 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2461 enum ieee80211_smps_mode smps_mode, 2462 struct sk_buff *skb); 2463 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2464 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef, 2465 const struct ieee80211_sta_eht_cap *eht_cap); 2466 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2467 const struct ieee80211_supported_band *sband, 2468 const u8 *srates, int srates_len, u32 *rates); 2469 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2470 struct sk_buff *skb, bool need_basic, 2471 enum nl80211_band band); 2472 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2473 struct sk_buff *skb, bool need_basic, 2474 enum nl80211_band band); 2475 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2476 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2477 struct ieee80211_sta_s1g_cap *caps, 2478 struct sk_buff *skb); 2479 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2480 struct sk_buff *skb); 2481 u8 *ieee80211_ie_build_s1g_cap(u8 *pos, struct ieee80211_sta_s1g_cap *s1g_cap); 2482 2483 /* channel management */ 2484 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2485 struct cfg80211_chan_def *chandef); 2486 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2487 const struct ieee80211_vht_operation *oper, 2488 const struct ieee80211_ht_operation *htop, 2489 struct cfg80211_chan_def *chandef); 2490 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 2491 bool support_160, bool support_320, 2492 struct cfg80211_chan_def *chandef); 2493 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2494 const struct ieee80211_he_operation *he_oper, 2495 const struct ieee80211_eht_operation *eht_oper, 2496 struct cfg80211_chan_def *chandef); 2497 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2498 struct cfg80211_chan_def *chandef); 2499 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2500 2501 int __must_check 2502 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2503 const struct cfg80211_chan_def *chandef, 2504 enum ieee80211_chanctx_mode mode); 2505 int __must_check 2506 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2507 const struct cfg80211_chan_def *chandef, 2508 enum ieee80211_chanctx_mode mode, 2509 bool radar_required); 2510 int __must_check 2511 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2512 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2513 2514 int __must_check 2515 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, 2516 const struct cfg80211_chan_def *chandef, 2517 u64 *changed); 2518 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2519 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2520 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2521 bool clear); 2522 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2523 struct ieee80211_chanctx *ctx); 2524 2525 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2526 struct ieee80211_chanctx *chanctx); 2527 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2528 struct ieee80211_chanctx *ctx, 2529 struct ieee80211_link_data *rsvd_for); 2530 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2531 2532 void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work); 2533 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2534 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 2535 struct wiphy_work *work); 2536 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2537 struct cfg80211_csa_settings *csa_settings); 2538 2539 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2540 struct ieee80211_sub_if_data *sdata); 2541 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2542 const struct cfg80211_chan_def *chandef, 2543 enum ieee80211_chanctx_mode chanmode, 2544 u8 radar_detect); 2545 int ieee80211_max_num_channels(struct ieee80211_local *local); 2546 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2547 struct ieee80211_chanctx *ctx); 2548 2549 /* TDLS */ 2550 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2551 const u8 *peer, int link_id, 2552 u8 action_code, u8 dialog_token, u16 status_code, 2553 u32 peer_capability, bool initiator, 2554 const u8 *extra_ies, size_t extra_ies_len); 2555 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2556 const u8 *peer, enum nl80211_tdls_operation oper); 2557 void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk); 2558 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2559 const u8 *addr, u8 oper_class, 2560 struct cfg80211_chan_def *chandef); 2561 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2562 struct net_device *dev, 2563 const u8 *addr); 2564 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2565 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2566 const u8 *peer, u16 reason); 2567 void 2568 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2569 struct sk_buff *skb); 2570 2571 2572 const char *ieee80211_get_reason_code_string(u16 reason_code); 2573 u16 ieee80211_encode_usf(int val); 2574 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2575 enum nl80211_iftype type); 2576 2577 extern const struct ethtool_ops ieee80211_ethtool_ops; 2578 2579 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2580 struct ieee80211_vif *vif, 2581 struct ieee80211_sta *pubsta, 2582 int len, bool ampdu); 2583 #ifdef CONFIG_MAC80211_NOINLINE 2584 #define debug_noinline noinline 2585 #else 2586 #define debug_noinline 2587 #endif 2588 2589 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2590 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2591 2592 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2593 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2594 const struct ieee80211_sta_he_cap *he_cap, 2595 const struct ieee80211_sta_eht_cap *eht_cap, 2596 u8 *end, 2597 bool for_ap); 2598 2599 void 2600 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2601 struct ieee80211_supported_band *sband, 2602 const u8 *he_cap_ie, u8 he_cap_len, 2603 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2604 u8 eht_cap_len, 2605 struct link_sta_info *link_sta); 2606 2607 void ieee80211_check_wbrf_support(struct ieee80211_local *local); 2608 void ieee80211_add_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef); 2609 void ieee80211_remove_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef); 2610 2611 #if IS_ENABLED(CONFIG_MAC80211_KUNIT_TEST) 2612 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym) 2613 #define VISIBLE_IF_MAC80211_KUNIT 2614 ieee80211_rx_result 2615 ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx); 2616 #else 2617 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) 2618 #define VISIBLE_IF_MAC80211_KUNIT static 2619 #endif 2620 2621 #endif /* IEEE80211_I_H */ 2622