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