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 37 extern const struct cfg80211_ops mac80211_config_ops; 38 39 struct ieee80211_local; 40 41 /* Maximum number of broadcast/multicast frames to buffer when some of the 42 * associated stations are using power saving. */ 43 #define AP_MAX_BC_BUFFER 128 44 45 /* Maximum number of frames buffered to all STAs, including multicast frames. 46 * Note: increasing this limit increases the potential memory requirement. Each 47 * frame can be up to about 2 kB long. */ 48 #define TOTAL_MAX_TX_BUFFER 512 49 50 /* Required encryption head and tailroom */ 51 #define IEEE80211_ENCRYPT_HEADROOM 8 52 #define IEEE80211_ENCRYPT_TAILROOM 18 53 54 /* power level hasn't been configured (or set to automatic) */ 55 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 56 57 /* 58 * Some APs experience problems when working with U-APSD. Decreasing the 59 * probability of that happening by using legacy mode for all ACs but VO isn't 60 * enough. 61 * 62 * Cisco 4410N originally forced us to enable VO by default only because it 63 * treated non-VO ACs as legacy. 64 * 65 * However some APs (notably Netgear R7000) silently reclassify packets to 66 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 67 * clients would never see some frames (e.g. ARP responses) or would fetch them 68 * accidentally after a long time. 69 * 70 * It makes little sense to enable u-APSD queues by default because it needs 71 * userspace applications to be aware of it to actually take advantage of the 72 * possible additional powersavings. Implicitly depending on driver autotrigger 73 * frame support doesn't make much sense. 74 */ 75 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 76 77 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 78 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 79 80 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 81 82 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 83 84 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 85 86 87 /* 88 * Keep a station's queues on the active list for deficit accounting purposes 89 * if it was active or queued during the last 100ms 90 */ 91 #define AIRTIME_ACTIVE_DURATION (HZ / 10) 92 93 struct ieee80211_bss { 94 u32 device_ts_beacon, device_ts_presp; 95 96 bool wmm_used; 97 bool uapsd_supported; 98 99 #define IEEE80211_MAX_SUPP_RATES 32 100 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 101 size_t supp_rates_len; 102 struct ieee80211_rate *beacon_rate; 103 104 u32 vht_cap_info; 105 106 /* 107 * During association, we save an ERP value from a probe response so 108 * that we can feed ERP info to the driver when handling the 109 * association completes. these fields probably won't be up-to-date 110 * otherwise, you probably don't want to use them. 111 */ 112 bool has_erp_value; 113 u8 erp_value; 114 115 /* Keep track of the corruption of the last beacon/probe response. */ 116 u8 corrupt_data; 117 118 /* Keep track of what bits of information we have valid info for. */ 119 u8 valid_data; 120 }; 121 122 /** 123 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 124 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 125 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 126 * 127 * These are bss flags that are attached to a bss in the 128 * @corrupt_data field of &struct ieee80211_bss. 129 */ 130 enum ieee80211_bss_corrupt_data_flags { 131 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 132 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 133 }; 134 135 /** 136 * enum ieee80211_valid_data_flags - BSS valid data flags 137 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 138 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 139 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 140 * 141 * These are bss flags that are attached to a bss in the 142 * @valid_data field of &struct ieee80211_bss. They show which parts 143 * of the data structure were received as a result of an un-corrupted 144 * beacon/probe response. 145 */ 146 enum ieee80211_bss_valid_data_flags { 147 IEEE80211_BSS_VALID_WMM = BIT(1), 148 IEEE80211_BSS_VALID_RATES = BIT(2), 149 IEEE80211_BSS_VALID_ERP = BIT(3) 150 }; 151 152 typedef unsigned __bitwise ieee80211_tx_result; 153 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 154 #define TX_DROP ((__force ieee80211_tx_result) 1u) 155 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 156 157 #define IEEE80211_TX_UNICAST BIT(1) 158 #define IEEE80211_TX_PS_BUFFERED BIT(2) 159 160 struct ieee80211_tx_data { 161 struct sk_buff *skb; 162 struct sk_buff_head skbs; 163 struct ieee80211_local *local; 164 struct ieee80211_sub_if_data *sdata; 165 struct sta_info *sta; 166 struct ieee80211_key *key; 167 struct ieee80211_tx_rate rate; 168 169 unsigned int flags; 170 }; 171 172 173 typedef unsigned __bitwise ieee80211_rx_result; 174 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 175 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 176 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 177 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 178 179 /** 180 * enum ieee80211_packet_rx_flags - packet RX flags 181 * @IEEE80211_RX_AMSDU: a-MSDU packet 182 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 183 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 184 * 185 * These are per-frame flags that are attached to a frame in the 186 * @rx_flags field of &struct ieee80211_rx_status. 187 */ 188 enum ieee80211_packet_rx_flags { 189 IEEE80211_RX_AMSDU = BIT(3), 190 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 191 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 192 }; 193 194 /** 195 * enum ieee80211_rx_flags - RX data flags 196 * 197 * @IEEE80211_RX_CMNTR: received on cooked monitor already 198 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 199 * to cfg80211_report_obss_beacon(). 200 * 201 * These flags are used across handling multiple interfaces 202 * for a single frame. 203 */ 204 enum ieee80211_rx_flags { 205 IEEE80211_RX_CMNTR = BIT(0), 206 IEEE80211_RX_BEACON_REPORTED = BIT(1), 207 }; 208 209 struct ieee80211_rx_data { 210 struct list_head *list; 211 struct sk_buff *skb; 212 struct ieee80211_local *local; 213 struct ieee80211_sub_if_data *sdata; 214 struct ieee80211_link_data *link; 215 struct sta_info *sta; 216 struct link_sta_info *link_sta; 217 struct ieee80211_key *key; 218 219 unsigned int flags; 220 221 /* 222 * Index into sequence numbers array, 0..16 223 * since the last (16) is used for non-QoS, 224 * will be 16 on non-QoS frames. 225 */ 226 int seqno_idx; 227 228 /* 229 * Index into the security IV/PN arrays, 0..16 230 * since the last (16) is used for CCMP-encrypted 231 * management frames, will be set to 16 on mgmt 232 * frames and 0 on non-QoS frames. 233 */ 234 int security_idx; 235 236 int link_id; 237 238 union { 239 struct { 240 u32 iv32; 241 u16 iv16; 242 } tkip; 243 struct { 244 u8 pn[IEEE80211_CCMP_PN_LEN]; 245 } ccm_gcm; 246 }; 247 }; 248 249 struct ieee80211_csa_settings { 250 const u16 *counter_offsets_beacon; 251 const u16 *counter_offsets_presp; 252 253 int n_counter_offsets_beacon; 254 int n_counter_offsets_presp; 255 256 u8 count; 257 }; 258 259 struct ieee80211_color_change_settings { 260 u16 counter_offset_beacon; 261 u16 counter_offset_presp; 262 u8 count; 263 }; 264 265 struct beacon_data { 266 u8 *head, *tail; 267 int head_len, tail_len; 268 struct ieee80211_meshconf_ie *meshconf; 269 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 270 u8 cntdwn_current_counter; 271 struct cfg80211_mbssid_elems *mbssid_ies; 272 struct rcu_head rcu_head; 273 }; 274 275 struct probe_resp { 276 struct rcu_head rcu_head; 277 int len; 278 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 279 u8 data[]; 280 }; 281 282 struct fils_discovery_data { 283 struct rcu_head rcu_head; 284 int len; 285 u8 data[]; 286 }; 287 288 struct unsol_bcast_probe_resp_data { 289 struct rcu_head rcu_head; 290 int len; 291 u8 data[]; 292 }; 293 294 struct ps_data { 295 /* yes, this looks ugly, but guarantees that we can later use 296 * bitmap_empty :) 297 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 298 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 299 __aligned(__alignof__(unsigned long)); 300 struct sk_buff_head bc_buf; 301 atomic_t num_sta_ps; /* number of stations in PS mode */ 302 int dtim_count; 303 bool dtim_bc_mc; 304 }; 305 306 struct ieee80211_if_ap { 307 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 308 309 struct ps_data ps; 310 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 311 312 bool multicast_to_unicast; 313 bool active; 314 }; 315 316 struct ieee80211_if_vlan { 317 struct list_head list; /* write-protected with RTNL and local->mtx */ 318 319 /* used for all tx if the VLAN is configured to 4-addr mode */ 320 struct sta_info __rcu *sta; 321 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 322 }; 323 324 struct mesh_stats { 325 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 326 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 327 __u32 fwded_frames; /* Mesh total forwarded frames */ 328 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 329 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 330 }; 331 332 #define PREQ_Q_F_START 0x1 333 #define PREQ_Q_F_REFRESH 0x2 334 struct mesh_preq_queue { 335 struct list_head list; 336 u8 dst[ETH_ALEN]; 337 u8 flags; 338 }; 339 340 struct ieee80211_roc_work { 341 struct list_head list; 342 343 struct ieee80211_sub_if_data *sdata; 344 345 struct ieee80211_channel *chan; 346 347 bool started, abort, hw_begun, notified; 348 bool on_channel; 349 350 unsigned long start_time; 351 352 u32 duration, req_duration; 353 struct sk_buff *frame; 354 u64 cookie, mgmt_tx_cookie; 355 enum ieee80211_roc_type type; 356 }; 357 358 /* flags used in struct ieee80211_if_managed.flags */ 359 enum ieee80211_sta_flags { 360 IEEE80211_STA_CONNECTION_POLL = BIT(1), 361 IEEE80211_STA_CONTROL_PORT = BIT(2), 362 IEEE80211_STA_MFP_ENABLED = BIT(6), 363 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 364 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 365 IEEE80211_STA_ENABLE_RRM = BIT(15), 366 }; 367 368 typedef u32 __bitwise ieee80211_conn_flags_t; 369 370 enum ieee80211_conn_flags { 371 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0), 372 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1), 373 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2), 374 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3), 375 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4), 376 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5), 377 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6), 378 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7), 379 }; 380 381 struct ieee80211_mgd_auth_data { 382 struct cfg80211_bss *bss; 383 unsigned long timeout; 384 int tries; 385 u16 algorithm, expected_transaction; 386 387 u8 key[WLAN_KEY_LEN_WEP104]; 388 u8 key_len, key_idx; 389 bool done, waiting; 390 bool peer_confirmed; 391 bool timeout_started; 392 int link_id; 393 394 u8 ap_addr[ETH_ALEN] __aligned(2); 395 396 u16 sae_trans, sae_status; 397 size_t data_len; 398 u8 data[]; 399 }; 400 401 struct ieee80211_mgd_assoc_data { 402 struct { 403 struct cfg80211_bss *bss; 404 405 u8 addr[ETH_ALEN] __aligned(2); 406 407 u8 ap_ht_param; 408 409 struct ieee80211_vht_cap ap_vht_cap; 410 411 size_t elems_len; 412 u8 *elems; /* pointing to inside ie[] below */ 413 414 ieee80211_conn_flags_t conn_flags; 415 416 u16 status; 417 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 418 419 u8 ap_addr[ETH_ALEN] __aligned(2); 420 421 /* this is for a workaround, so we use it only for non-MLO */ 422 const u8 *supp_rates; 423 u8 supp_rates_len; 424 425 unsigned long timeout; 426 int tries; 427 428 u8 prev_ap_addr[ETH_ALEN]; 429 u8 ssid[IEEE80211_MAX_SSID_LEN]; 430 u8 ssid_len; 431 bool wmm, uapsd; 432 bool need_beacon; 433 bool synced; 434 bool timeout_started; 435 bool s1g; 436 437 unsigned int assoc_link_id; 438 439 u8 fils_nonces[2 * FILS_NONCE_LEN]; 440 u8 fils_kek[FILS_MAX_KEK_LEN]; 441 size_t fils_kek_len; 442 443 size_t ie_len; 444 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 445 u8 ie[]; 446 }; 447 448 struct ieee80211_sta_tx_tspec { 449 /* timestamp of the first packet in the time slice */ 450 unsigned long time_slice_start; 451 452 u32 admitted_time; /* in usecs, unlike over the air */ 453 u8 tsid; 454 s8 up; /* signed to be able to invalidate with -1 during teardown */ 455 456 /* consumed TX time in microseconds in the time slice */ 457 u32 consumed_tx_time; 458 enum { 459 TX_TSPEC_ACTION_NONE = 0, 460 TX_TSPEC_ACTION_DOWNGRADE, 461 TX_TSPEC_ACTION_STOP_DOWNGRADE, 462 } action; 463 bool downgraded; 464 }; 465 466 DECLARE_EWMA(beacon_signal, 4, 4) 467 468 struct ieee80211_if_managed { 469 struct timer_list timer; 470 struct timer_list conn_mon_timer; 471 struct timer_list bcn_mon_timer; 472 struct work_struct monitor_work; 473 struct work_struct beacon_connection_loss_work; 474 struct work_struct csa_connection_drop_work; 475 476 unsigned long beacon_timeout; 477 unsigned long probe_timeout; 478 int probe_send_count; 479 bool nullfunc_failed; 480 u8 connection_loss:1, 481 driver_disconnect:1, 482 reconnect:1, 483 associated:1; 484 485 struct ieee80211_mgd_auth_data *auth_data; 486 struct ieee80211_mgd_assoc_data *assoc_data; 487 488 bool powersave; /* powersave requested for this iface */ 489 bool broken_ap; /* AP is broken -- turn off powersave */ 490 491 unsigned int flags; 492 493 bool status_acked; 494 bool status_received; 495 __le16 status_fc; 496 497 enum { 498 IEEE80211_MFP_DISABLED, 499 IEEE80211_MFP_OPTIONAL, 500 IEEE80211_MFP_REQUIRED 501 } mfp; /* management frame protection */ 502 503 /* 504 * Bitmask of enabled u-apsd queues, 505 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 506 * to take effect. 507 */ 508 unsigned int uapsd_queues; 509 510 /* 511 * Maximum number of buffered frames AP can deliver during a 512 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 513 * Needs a new association to take effect. 514 */ 515 unsigned int uapsd_max_sp_len; 516 517 u8 use_4addr; 518 519 /* 520 * State variables for keeping track of RSSI of the AP currently 521 * connected to and informing driver when RSSI has gone 522 * below/above a certain threshold. 523 */ 524 int rssi_min_thold, rssi_max_thold; 525 526 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 527 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 528 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 529 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 530 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 531 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 532 533 /* TDLS support */ 534 u8 tdls_peer[ETH_ALEN] __aligned(2); 535 struct delayed_work tdls_peer_del_work; 536 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 537 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 538 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 539 bool tdls_wider_bw_prohibited; 540 541 /* WMM-AC TSPEC support */ 542 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 543 /* Use a separate work struct so that we can do something here 544 * while the sdata->work is flushing the queues, for example. 545 * otherwise, in scenarios where we hardly get any traffic out 546 * on the BE queue, but there's a lot of VO traffic, we might 547 * get stuck in a downgraded situation and flush takes forever. 548 */ 549 struct delayed_work tx_tspec_wk; 550 551 /* Information elements from the last transmitted (Re)Association 552 * Request frame. 553 */ 554 u8 *assoc_req_ies; 555 size_t assoc_req_ies_len; 556 }; 557 558 struct ieee80211_if_ibss { 559 struct timer_list timer; 560 struct work_struct csa_connection_drop_work; 561 562 unsigned long last_scan_completed; 563 564 u32 basic_rates; 565 566 bool fixed_bssid; 567 bool fixed_channel; 568 bool privacy; 569 570 bool control_port; 571 bool userspace_handles_dfs; 572 573 u8 bssid[ETH_ALEN] __aligned(2); 574 u8 ssid[IEEE80211_MAX_SSID_LEN]; 575 u8 ssid_len, ie_len; 576 u8 *ie; 577 struct cfg80211_chan_def chandef; 578 579 unsigned long ibss_join_req; 580 /* probe response/beacon for IBSS */ 581 struct beacon_data __rcu *presp; 582 583 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 584 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 585 586 spinlock_t incomplete_lock; 587 struct list_head incomplete_stations; 588 589 enum { 590 IEEE80211_IBSS_MLME_SEARCH, 591 IEEE80211_IBSS_MLME_JOINED, 592 } state; 593 }; 594 595 /** 596 * struct ieee80211_if_ocb - OCB mode state 597 * 598 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 599 * @wrkq_flags: OCB deferred task action 600 * @incomplete_lock: delayed STA insertion lock 601 * @incomplete_stations: list of STAs waiting for delayed insertion 602 * @joined: indication if the interface is connected to an OCB network 603 */ 604 struct ieee80211_if_ocb { 605 struct timer_list housekeeping_timer; 606 unsigned long wrkq_flags; 607 608 spinlock_t incomplete_lock; 609 struct list_head incomplete_stations; 610 611 bool joined; 612 }; 613 614 /** 615 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 616 * 617 * these declarations define the interface, which enables 618 * vendor-specific mesh synchronization 619 * 620 */ 621 struct ieee802_11_elems; 622 struct ieee80211_mesh_sync_ops { 623 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 624 struct ieee80211_mgmt *mgmt, unsigned int len, 625 const struct ieee80211_meshconf_ie *mesh_cfg, 626 struct ieee80211_rx_status *rx_status); 627 628 /* should be called with beacon_data under RCU read lock */ 629 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 630 struct beacon_data *beacon); 631 /* add other framework functions here */ 632 }; 633 634 struct mesh_csa_settings { 635 struct rcu_head rcu_head; 636 struct cfg80211_csa_settings settings; 637 }; 638 639 /** 640 * struct mesh_table 641 * 642 * @known_gates: list of known mesh gates and their mpaths by the station. The 643 * gate's mpath may or may not be resolved and active. 644 * @gates_lock: protects updates to known_gates 645 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 646 * @walk_head: linked list containing all mesh_path objects 647 * @walk_lock: lock protecting walk_head 648 * @entries: number of entries in the table 649 */ 650 struct mesh_table { 651 struct hlist_head known_gates; 652 spinlock_t gates_lock; 653 struct rhashtable rhead; 654 struct hlist_head walk_head; 655 spinlock_t walk_lock; 656 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 657 }; 658 659 struct ieee80211_if_mesh { 660 struct timer_list housekeeping_timer; 661 struct timer_list mesh_path_timer; 662 struct timer_list mesh_path_root_timer; 663 664 unsigned long wrkq_flags; 665 unsigned long mbss_changed; 666 667 bool userspace_handles_dfs; 668 669 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 670 size_t mesh_id_len; 671 /* Active Path Selection Protocol Identifier */ 672 u8 mesh_pp_id; 673 /* Active Path Selection Metric Identifier */ 674 u8 mesh_pm_id; 675 /* Congestion Control Mode Identifier */ 676 u8 mesh_cc_id; 677 /* Synchronization Protocol Identifier */ 678 u8 mesh_sp_id; 679 /* Authentication Protocol Identifier */ 680 u8 mesh_auth_id; 681 /* Local mesh Sequence Number */ 682 u32 sn; 683 /* Last used PREQ ID */ 684 u32 preq_id; 685 atomic_t mpaths; 686 /* Timestamp of last SN update */ 687 unsigned long last_sn_update; 688 /* Time when it's ok to send next PERR */ 689 unsigned long next_perr; 690 /* Timestamp of last PREQ sent */ 691 unsigned long last_preq; 692 struct mesh_rmc *rmc; 693 spinlock_t mesh_preq_queue_lock; 694 struct mesh_preq_queue preq_queue; 695 int preq_queue_len; 696 struct mesh_stats mshstats; 697 struct mesh_config mshcfg; 698 atomic_t estab_plinks; 699 u32 mesh_seqnum; 700 bool accepting_plinks; 701 int num_gates; 702 struct beacon_data __rcu *beacon; 703 const u8 *ie; 704 u8 ie_len; 705 enum { 706 IEEE80211_MESH_SEC_NONE = 0x0, 707 IEEE80211_MESH_SEC_AUTHED = 0x1, 708 IEEE80211_MESH_SEC_SECURED = 0x2, 709 } security; 710 bool user_mpm; 711 /* Extensible Synchronization Framework */ 712 const struct ieee80211_mesh_sync_ops *sync_ops; 713 s64 sync_offset_clockdrift_max; 714 spinlock_t sync_offset_lock; 715 /* mesh power save */ 716 enum nl80211_mesh_power_mode nonpeer_pm; 717 int ps_peers_light_sleep; 718 int ps_peers_deep_sleep; 719 struct ps_data ps; 720 /* Channel Switching Support */ 721 struct mesh_csa_settings __rcu *csa; 722 enum { 723 IEEE80211_MESH_CSA_ROLE_NONE, 724 IEEE80211_MESH_CSA_ROLE_INIT, 725 IEEE80211_MESH_CSA_ROLE_REPEATER, 726 } csa_role; 727 u8 chsw_ttl; 728 u16 pre_value; 729 730 /* offset from skb->data while building IE */ 731 int meshconf_offset; 732 733 struct mesh_table mesh_paths; 734 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 735 int mesh_paths_generation; 736 int mpp_paths_generation; 737 }; 738 739 #ifdef CONFIG_MAC80211_MESH 740 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 741 do { (msh)->mshstats.name++; } while (0) 742 #else 743 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 744 do { } while (0) 745 #endif 746 747 /** 748 * enum ieee80211_sub_if_data_flags - virtual interface flags 749 * 750 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 751 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 752 * associated stations and deliver multicast frames both 753 * back to wireless media and to the local net stack. 754 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 755 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 756 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 757 * recovery 758 */ 759 enum ieee80211_sub_if_data_flags { 760 IEEE80211_SDATA_ALLMULTI = BIT(0), 761 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 762 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 763 IEEE80211_SDATA_IN_DRIVER = BIT(5), 764 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 765 }; 766 767 /** 768 * enum ieee80211_sdata_state_bits - virtual interface state bits 769 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 770 * mirrors netif_running() but is separate for interface type 771 * change handling while the interface is up 772 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 773 * mode, so queues are stopped 774 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 775 * to offchannel, reset when offchannel returns 776 */ 777 enum ieee80211_sdata_state_bits { 778 SDATA_STATE_RUNNING, 779 SDATA_STATE_OFFCHANNEL, 780 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 781 }; 782 783 /** 784 * enum ieee80211_chanctx_mode - channel context configuration mode 785 * 786 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 787 * multiple interfaces 788 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 789 * only by a single interface. This can be used for example for 790 * non-fixed channel IBSS. 791 */ 792 enum ieee80211_chanctx_mode { 793 IEEE80211_CHANCTX_SHARED, 794 IEEE80211_CHANCTX_EXCLUSIVE 795 }; 796 797 /** 798 * enum ieee80211_chanctx_replace_state - channel context replacement state 799 * 800 * This is used for channel context in-place reservations that require channel 801 * context switch/swap. 802 * 803 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 804 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 805 * by a (not yet registered) channel context pointed by %replace_ctx. 806 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 807 * replaces an existing channel context pointed to by %replace_ctx. 808 */ 809 enum ieee80211_chanctx_replace_state { 810 IEEE80211_CHANCTX_REPLACE_NONE, 811 IEEE80211_CHANCTX_WILL_BE_REPLACED, 812 IEEE80211_CHANCTX_REPLACES_OTHER, 813 }; 814 815 struct ieee80211_chanctx { 816 struct list_head list; 817 struct rcu_head rcu_head; 818 819 struct list_head assigned_links; 820 struct list_head reserved_links; 821 822 enum ieee80211_chanctx_replace_state replace_state; 823 struct ieee80211_chanctx *replace_ctx; 824 825 enum ieee80211_chanctx_mode mode; 826 bool driver_present; 827 828 struct ieee80211_chanctx_conf conf; 829 }; 830 831 struct mac80211_qos_map { 832 struct cfg80211_qos_map qos_map; 833 struct rcu_head rcu_head; 834 }; 835 836 enum txq_info_flags { 837 IEEE80211_TXQ_STOP, 838 IEEE80211_TXQ_AMPDU, 839 IEEE80211_TXQ_NO_AMSDU, 840 IEEE80211_TXQ_DIRTY, 841 }; 842 843 /** 844 * struct txq_info - per tid queue 845 * 846 * @tin: contains packets split into multiple flows 847 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 848 * a fq_flow which is already owned by a different tin 849 * @def_cvars: codel vars for @def_flow 850 * @frags: used to keep fragments created after dequeue 851 * @schedule_order: used with ieee80211_local->active_txqs 852 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 853 */ 854 struct txq_info { 855 struct fq_tin tin; 856 struct codel_vars def_cvars; 857 struct codel_stats cstats; 858 859 u16 schedule_round; 860 struct list_head schedule_order; 861 862 struct sk_buff_head frags; 863 864 unsigned long flags; 865 866 /* keep last! */ 867 struct ieee80211_txq txq; 868 }; 869 870 struct ieee80211_if_mntr { 871 u32 flags; 872 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 873 874 struct list_head list; 875 }; 876 877 /** 878 * struct ieee80211_if_nan - NAN state 879 * 880 * @conf: current NAN configuration 881 * @func_ids: a bitmap of available instance_id's 882 */ 883 struct ieee80211_if_nan { 884 struct cfg80211_nan_conf conf; 885 886 /* protects function_inst_ids */ 887 spinlock_t func_lock; 888 struct idr function_inst_ids; 889 }; 890 891 struct ieee80211_link_data_managed { 892 u8 bssid[ETH_ALEN] __aligned(2); 893 894 u8 dtim_period; 895 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 896 driver_smps_mode; /* smps mode request */ 897 898 ieee80211_conn_flags_t conn_flags; 899 900 s16 p2p_noa_index; 901 902 bool tdls_chan_switch_prohibited; 903 904 bool have_beacon; 905 bool tracking_signal_avg; 906 bool disable_wmm_tracking; 907 bool operating_11g_mode; 908 909 bool csa_waiting_bcn; 910 bool csa_ignored_same_chan; 911 struct timer_list chswitch_timer; 912 struct work_struct chswitch_work; 913 914 struct work_struct request_smps_work; 915 bool beacon_crc_valid; 916 u32 beacon_crc; 917 struct ewma_beacon_signal ave_beacon_signal; 918 int last_ave_beacon_signal; 919 920 /* 921 * Number of Beacon frames used in ave_beacon_signal. This can be used 922 * to avoid generating less reliable cqm events that would be based 923 * only on couple of received frames. 924 */ 925 unsigned int count_beacon_signal; 926 927 /* Number of times beacon loss was invoked. */ 928 unsigned int beacon_loss_count; 929 930 /* 931 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 932 * that triggered a cqm event. 0 indicates that no event has been 933 * generated for the current association. 934 */ 935 int last_cqm_event_signal; 936 937 int wmm_last_param_set; 938 int mu_edca_last_param_set; 939 940 struct cfg80211_bss *bss; 941 }; 942 943 struct ieee80211_link_data_ap { 944 struct beacon_data __rcu *beacon; 945 struct probe_resp __rcu *probe_resp; 946 struct fils_discovery_data __rcu *fils_discovery; 947 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 948 949 /* to be used after channel switch. */ 950 struct cfg80211_beacon_data *next_beacon; 951 }; 952 953 struct ieee80211_link_data { 954 struct ieee80211_sub_if_data *sdata; 955 unsigned int link_id; 956 957 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 958 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 959 960 /* multicast keys only */ 961 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 962 NUM_DEFAULT_MGMT_KEYS + 963 NUM_DEFAULT_BEACON_KEYS]; 964 struct ieee80211_key __rcu *default_multicast_key; 965 struct ieee80211_key __rcu *default_mgmt_key; 966 struct ieee80211_key __rcu *default_beacon_key; 967 968 struct work_struct csa_finalize_work; 969 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 970 971 bool operating_11g_mode; 972 973 struct cfg80211_chan_def csa_chandef; 974 975 struct work_struct color_change_finalize_work; 976 struct delayed_work color_collision_detect_work; 977 u64 color_bitmap; 978 979 /* context reservation -- protected with chanctx_mtx */ 980 struct ieee80211_chanctx *reserved_chanctx; 981 struct cfg80211_chan_def reserved_chandef; 982 bool reserved_radar_required; 983 bool reserved_ready; 984 985 u8 needed_rx_chains; 986 enum ieee80211_smps_mode smps_mode; 987 988 int user_power_level; /* in dBm */ 989 int ap_power_level; /* in dBm */ 990 991 bool radar_required; 992 struct delayed_work dfs_cac_timer_work; 993 994 union { 995 struct ieee80211_link_data_managed mgd; 996 struct ieee80211_link_data_ap ap; 997 } u; 998 999 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 1000 1001 struct ieee80211_bss_conf *conf; 1002 }; 1003 1004 struct ieee80211_sub_if_data { 1005 struct list_head list; 1006 1007 struct wireless_dev wdev; 1008 1009 /* keys */ 1010 struct list_head key_list; 1011 1012 /* count for keys needing tailroom space allocation */ 1013 int crypto_tx_tailroom_needed_cnt; 1014 int crypto_tx_tailroom_pending_dec; 1015 struct delayed_work dec_tailroom_needed_wk; 1016 1017 struct net_device *dev; 1018 struct ieee80211_local *local; 1019 1020 unsigned int flags; 1021 1022 unsigned long state; 1023 1024 char name[IFNAMSIZ]; 1025 1026 struct ieee80211_fragment_cache frags; 1027 1028 /* TID bitmap for NoAck policy */ 1029 u16 noack_map; 1030 1031 /* bit field of ACM bits (BIT(802.1D tag)) */ 1032 u8 wmm_acm; 1033 1034 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1035 struct ieee80211_key __rcu *default_unicast_key; 1036 1037 u16 sequence_number; 1038 u16 mld_mcast_seq; 1039 __be16 control_port_protocol; 1040 bool control_port_no_encrypt; 1041 bool control_port_no_preauth; 1042 bool control_port_over_nl80211; 1043 1044 atomic_t num_tx_queued; 1045 struct mac80211_qos_map __rcu *qos_map; 1046 1047 /* used to reconfigure hardware SM PS */ 1048 struct work_struct recalc_smps; 1049 1050 struct work_struct work; 1051 struct sk_buff_head skb_queue; 1052 struct sk_buff_head status_queue; 1053 1054 /* 1055 * AP this belongs to: self in AP mode and 1056 * corresponding AP in VLAN mode, NULL for 1057 * all others (might be needed later in IBSS) 1058 */ 1059 struct ieee80211_if_ap *bss; 1060 1061 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1062 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1063 1064 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1065 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1066 1067 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1068 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1069 1070 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1071 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1072 bool beacon_rate_set; 1073 1074 union { 1075 struct ieee80211_if_ap ap; 1076 struct ieee80211_if_vlan vlan; 1077 struct ieee80211_if_managed mgd; 1078 struct ieee80211_if_ibss ibss; 1079 struct ieee80211_if_mesh mesh; 1080 struct ieee80211_if_ocb ocb; 1081 struct ieee80211_if_mntr mntr; 1082 struct ieee80211_if_nan nan; 1083 } u; 1084 1085 struct ieee80211_link_data deflink; 1086 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1087 1088 /* for ieee80211_set_active_links_async() */ 1089 struct work_struct activate_links_work; 1090 u16 desired_active_links; 1091 1092 #ifdef CONFIG_MAC80211_DEBUGFS 1093 struct { 1094 struct dentry *subdir_stations; 1095 struct dentry *default_unicast_key; 1096 struct dentry *default_multicast_key; 1097 struct dentry *default_mgmt_key; 1098 struct dentry *default_beacon_key; 1099 } debugfs; 1100 #endif 1101 1102 /* must be last, dynamically sized area in this! */ 1103 struct ieee80211_vif vif; 1104 }; 1105 1106 static inline 1107 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1108 { 1109 return container_of(p, struct ieee80211_sub_if_data, vif); 1110 } 1111 1112 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1113 __acquires(&sdata->wdev.mtx) 1114 { 1115 mutex_lock(&sdata->wdev.mtx); 1116 __acquire(&sdata->wdev.mtx); 1117 } 1118 1119 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1120 __releases(&sdata->wdev.mtx) 1121 { 1122 mutex_unlock(&sdata->wdev.mtx); 1123 __release(&sdata->wdev.mtx); 1124 } 1125 1126 #define sdata_dereference(p, sdata) \ 1127 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1128 1129 static inline void 1130 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1131 { 1132 lockdep_assert_held(&sdata->wdev.mtx); 1133 } 1134 1135 static inline int 1136 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width) 1137 { 1138 switch (width) { 1139 case NL80211_CHAN_WIDTH_5: 1140 return 2; 1141 case NL80211_CHAN_WIDTH_10: 1142 return 1; 1143 default: 1144 return 0; 1145 } 1146 } 1147 1148 static inline int 1149 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1150 { 1151 return ieee80211_chanwidth_get_shift(chandef->width); 1152 } 1153 1154 static inline int 1155 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1156 { 1157 struct ieee80211_chanctx_conf *chanctx_conf; 1158 int shift = 0; 1159 1160 rcu_read_lock(); 1161 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 1162 if (chanctx_conf) 1163 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1164 rcu_read_unlock(); 1165 1166 return shift; 1167 } 1168 1169 static inline int 1170 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems) 1171 { 1172 int i, len = 0; 1173 1174 if (!elems) 1175 return 0; 1176 1177 for (i = 0; i < elems->cnt; i++) 1178 len += elems->elem[i].len; 1179 1180 return len; 1181 } 1182 1183 enum { 1184 IEEE80211_RX_MSG = 1, 1185 IEEE80211_TX_STATUS_MSG = 2, 1186 }; 1187 1188 enum queue_stop_reason { 1189 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1190 IEEE80211_QUEUE_STOP_REASON_PS, 1191 IEEE80211_QUEUE_STOP_REASON_CSA, 1192 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1193 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1194 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1195 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1196 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1197 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1198 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1199 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1200 1201 IEEE80211_QUEUE_STOP_REASONS, 1202 }; 1203 1204 #ifdef CONFIG_MAC80211_LEDS 1205 struct tpt_led_trigger { 1206 char name[32]; 1207 const struct ieee80211_tpt_blink *blink_table; 1208 unsigned int blink_table_len; 1209 struct timer_list timer; 1210 struct ieee80211_local *local; 1211 unsigned long prev_traffic; 1212 unsigned long tx_bytes, rx_bytes; 1213 unsigned int active, want; 1214 bool running; 1215 }; 1216 #endif 1217 1218 /** 1219 * mac80211 scan flags - currently active scan mode 1220 * 1221 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1222 * well be on the operating channel 1223 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1224 * determine if we are on the operating channel or not 1225 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1226 * channel. This should not interrupt normal traffic. 1227 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1228 * that the scan completed. 1229 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1230 * a scan complete for an aborted scan. 1231 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1232 * cancelled. 1233 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1234 * and could send a probe request after receiving a beacon. 1235 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1236 */ 1237 enum { 1238 SCAN_SW_SCANNING, 1239 SCAN_HW_SCANNING, 1240 SCAN_ONCHANNEL_SCANNING, 1241 SCAN_COMPLETED, 1242 SCAN_ABORTED, 1243 SCAN_HW_CANCELLED, 1244 SCAN_BEACON_WAIT, 1245 SCAN_BEACON_DONE, 1246 }; 1247 1248 /** 1249 * enum mac80211_scan_state - scan state machine states 1250 * 1251 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1252 * determines if we should keep on scanning or switch back to the 1253 * operating channel 1254 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1255 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1256 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1257 * send out data 1258 * @SCAN_RESUME: Resume the scan and scan the next channel 1259 * @SCAN_ABORT: Abort the scan and go back to operating channel 1260 */ 1261 enum mac80211_scan_state { 1262 SCAN_DECISION, 1263 SCAN_SET_CHANNEL, 1264 SCAN_SEND_PROBE, 1265 SCAN_SUSPEND, 1266 SCAN_RESUME, 1267 SCAN_ABORT, 1268 }; 1269 1270 DECLARE_STATIC_KEY_FALSE(aql_disable); 1271 1272 struct ieee80211_local { 1273 /* embed the driver visible part. 1274 * don't cast (use the static inlines below), but we keep 1275 * it first anyway so they become a no-op */ 1276 struct ieee80211_hw hw; 1277 1278 struct fq fq; 1279 struct codel_vars *cvars; 1280 struct codel_params cparams; 1281 1282 /* protects active_txqs and txqi->schedule_order */ 1283 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1284 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1285 u16 schedule_round[IEEE80211_NUM_ACS]; 1286 1287 u16 airtime_flags; 1288 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1289 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1290 u32 aql_threshold; 1291 atomic_t aql_total_pending_airtime; 1292 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1293 1294 const struct ieee80211_ops *ops; 1295 1296 /* 1297 * private workqueue to mac80211. mac80211 makes this accessible 1298 * via ieee80211_queue_work() 1299 */ 1300 struct workqueue_struct *workqueue; 1301 1302 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1303 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1304 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1305 spinlock_t queue_stop_reason_lock; 1306 1307 int open_count; 1308 int monitors, cooked_mntrs; 1309 /* number of interfaces with corresponding FIF_ flags */ 1310 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1311 fif_probe_req; 1312 bool probe_req_reg; 1313 bool rx_mcast_action_reg; 1314 unsigned int filter_flags; /* FIF_* */ 1315 1316 bool wiphy_ciphers_allocated; 1317 1318 bool use_chanctx; 1319 1320 /* protects the aggregated multicast list and filter calls */ 1321 spinlock_t filter_lock; 1322 1323 /* used for uploading changed mc list */ 1324 struct work_struct reconfig_filter; 1325 1326 /* aggregated multicast list */ 1327 struct netdev_hw_addr_list mc_list; 1328 1329 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1330 1331 /* 1332 * suspended is true if we finished all the suspend _and_ we have 1333 * not yet come up from resume. This is to be used by mac80211 1334 * to ensure driver sanity during suspend and mac80211's own 1335 * sanity. It can eventually be used for WoW as well. 1336 */ 1337 bool suspended; 1338 1339 /* suspending is true during the whole suspend process */ 1340 bool suspending; 1341 1342 /* 1343 * Resuming is true while suspended, but when we're reprogramming the 1344 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1345 * again even though some other parts of the stack are still suspended 1346 * and we still drop received frames to avoid waking the stack. 1347 */ 1348 bool resuming; 1349 1350 /* 1351 * quiescing is true during the suspend process _only_ to 1352 * ease timer cancelling etc. 1353 */ 1354 bool quiescing; 1355 1356 /* device is started */ 1357 bool started; 1358 1359 /* device is during a HW reconfig */ 1360 bool in_reconfig; 1361 1362 /* wowlan is enabled -- don't reconfig on resume */ 1363 bool wowlan; 1364 1365 struct work_struct radar_detected_work; 1366 1367 /* number of RX chains the hardware has */ 1368 u8 rx_chains; 1369 1370 /* bitmap of which sbands were copied */ 1371 u8 sband_allocated; 1372 1373 int tx_headroom; /* required headroom for hardware/radiotap */ 1374 1375 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1376 * added to skb_queue will be processed, but frames in 1377 * skb_queue_unreliable may be dropped if the total length of these 1378 * queues increases over the limit. */ 1379 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1380 struct tasklet_struct tasklet; 1381 struct sk_buff_head skb_queue; 1382 struct sk_buff_head skb_queue_unreliable; 1383 1384 spinlock_t rx_path_lock; 1385 1386 /* Station data */ 1387 /* 1388 * The mutex only protects the list, hash table and 1389 * counter, reads are done with RCU. 1390 */ 1391 struct mutex sta_mtx; 1392 spinlock_t tim_lock; 1393 unsigned long num_sta; 1394 struct list_head sta_list; 1395 struct rhltable sta_hash; 1396 struct rhltable link_sta_hash; 1397 struct timer_list sta_cleanup; 1398 int sta_generation; 1399 1400 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1401 struct tasklet_struct tx_pending_tasklet; 1402 struct tasklet_struct wake_txqs_tasklet; 1403 1404 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1405 1406 /* number of interfaces with allmulti RX */ 1407 atomic_t iff_allmultis; 1408 1409 struct rate_control_ref *rate_ctrl; 1410 1411 struct arc4_ctx wep_tx_ctx; 1412 struct arc4_ctx wep_rx_ctx; 1413 u32 wep_iv; 1414 1415 /* see iface.c */ 1416 struct list_head interfaces; 1417 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1418 struct mutex iflist_mtx; 1419 1420 /* 1421 * Key mutex, protects sdata's key_list and sta_info's 1422 * key pointers and ptk_idx (write access, they're RCU.) 1423 */ 1424 struct mutex key_mtx; 1425 1426 /* mutex for scan and work locking */ 1427 struct mutex mtx; 1428 1429 /* Scanning and BSS list */ 1430 unsigned long scanning; 1431 struct cfg80211_ssid scan_ssid; 1432 struct cfg80211_scan_request *int_scan_req; 1433 struct cfg80211_scan_request __rcu *scan_req; 1434 struct ieee80211_scan_request *hw_scan_req; 1435 struct cfg80211_chan_def scan_chandef; 1436 enum nl80211_band hw_scan_band; 1437 int scan_channel_idx; 1438 int scan_ies_len; 1439 int hw_scan_ies_bufsize; 1440 struct cfg80211_scan_info scan_info; 1441 1442 struct work_struct sched_scan_stopped_work; 1443 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1444 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1445 u8 scan_addr[ETH_ALEN]; 1446 1447 unsigned long leave_oper_channel_time; 1448 enum mac80211_scan_state next_scan_state; 1449 struct delayed_work scan_work; 1450 struct ieee80211_sub_if_data __rcu *scan_sdata; 1451 /* For backward compatibility only -- do not use */ 1452 struct cfg80211_chan_def _oper_chandef; 1453 1454 /* Temporary remain-on-channel for off-channel operations */ 1455 struct ieee80211_channel *tmp_channel; 1456 1457 /* channel contexts */ 1458 struct list_head chanctx_list; 1459 struct mutex chanctx_mtx; 1460 1461 #ifdef CONFIG_MAC80211_LEDS 1462 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1463 struct led_trigger tpt_led; 1464 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1465 atomic_t radio_led_active, tpt_led_active; 1466 struct tpt_led_trigger *tpt_led_trigger; 1467 #endif 1468 1469 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1470 /* SNMP counters */ 1471 /* dot11CountersTable */ 1472 u32 dot11TransmittedFragmentCount; 1473 u32 dot11MulticastTransmittedFrameCount; 1474 u32 dot11FailedCount; 1475 u32 dot11RetryCount; 1476 u32 dot11MultipleRetryCount; 1477 u32 dot11FrameDuplicateCount; 1478 u32 dot11ReceivedFragmentCount; 1479 u32 dot11MulticastReceivedFrameCount; 1480 u32 dot11TransmittedFrameCount; 1481 1482 /* TX/RX handler statistics */ 1483 unsigned int tx_handlers_drop; 1484 unsigned int tx_handlers_queued; 1485 unsigned int tx_handlers_drop_wep; 1486 unsigned int tx_handlers_drop_not_assoc; 1487 unsigned int tx_handlers_drop_unauth_port; 1488 unsigned int rx_handlers_drop; 1489 unsigned int rx_handlers_queued; 1490 unsigned int rx_handlers_drop_nullfunc; 1491 unsigned int rx_handlers_drop_defrag; 1492 unsigned int tx_expand_skb_head; 1493 unsigned int tx_expand_skb_head_cloned; 1494 unsigned int rx_expand_skb_head_defrag; 1495 unsigned int rx_handlers_fragments; 1496 unsigned int tx_status_drop; 1497 #define I802_DEBUG_INC(c) (c)++ 1498 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1499 #define I802_DEBUG_INC(c) do { } while (0) 1500 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1501 1502 1503 int total_ps_buffered; /* total number of all buffered unicast and 1504 * multicast packets for power saving stations 1505 */ 1506 1507 bool pspolling; 1508 /* 1509 * PS can only be enabled when we have exactly one managed 1510 * interface (and monitors) in PS, this then points there. 1511 */ 1512 struct ieee80211_sub_if_data *ps_sdata; 1513 struct work_struct dynamic_ps_enable_work; 1514 struct work_struct dynamic_ps_disable_work; 1515 struct timer_list dynamic_ps_timer; 1516 struct notifier_block ifa_notifier; 1517 struct notifier_block ifa6_notifier; 1518 1519 /* 1520 * The dynamic ps timeout configured from user space via WEXT - 1521 * this will override whatever chosen by mac80211 internally. 1522 */ 1523 int dynamic_ps_forced_timeout; 1524 1525 int user_power_level; /* in dBm, for all interfaces */ 1526 1527 enum ieee80211_smps_mode smps_mode; 1528 1529 struct work_struct restart_work; 1530 1531 #ifdef CONFIG_MAC80211_DEBUGFS 1532 struct local_debugfsdentries { 1533 struct dentry *rcdir; 1534 struct dentry *keys; 1535 } debugfs; 1536 bool force_tx_status; 1537 #endif 1538 1539 /* 1540 * Remain-on-channel support 1541 */ 1542 struct delayed_work roc_work; 1543 struct list_head roc_list; 1544 struct work_struct hw_roc_start, hw_roc_done; 1545 unsigned long hw_roc_start_time; 1546 u64 roc_cookie_counter; 1547 1548 struct idr ack_status_frames; 1549 spinlock_t ack_status_lock; 1550 1551 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1552 1553 /* virtual monitor interface */ 1554 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1555 struct cfg80211_chan_def monitor_chandef; 1556 1557 /* extended capabilities provided by mac80211 */ 1558 u8 ext_capa[8]; 1559 }; 1560 1561 static inline struct ieee80211_sub_if_data * 1562 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1563 { 1564 return netdev_priv(dev); 1565 } 1566 1567 static inline struct ieee80211_sub_if_data * 1568 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1569 { 1570 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1571 } 1572 1573 static inline struct ieee80211_supported_band * 1574 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1575 { 1576 struct ieee80211_local *local = sdata->local; 1577 struct ieee80211_chanctx_conf *chanctx_conf; 1578 enum nl80211_band band; 1579 1580 WARN_ON(sdata->vif.valid_links); 1581 1582 rcu_read_lock(); 1583 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1584 1585 if (!chanctx_conf) { 1586 rcu_read_unlock(); 1587 return NULL; 1588 } 1589 1590 band = chanctx_conf->def.chan->band; 1591 rcu_read_unlock(); 1592 1593 return local->hw.wiphy->bands[band]; 1594 } 1595 1596 static inline struct ieee80211_supported_band * 1597 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1598 { 1599 struct ieee80211_local *local = link->sdata->local; 1600 struct ieee80211_chanctx_conf *chanctx_conf; 1601 enum nl80211_band band; 1602 1603 rcu_read_lock(); 1604 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1605 if (!chanctx_conf) { 1606 rcu_read_unlock(); 1607 return NULL; 1608 } 1609 1610 band = chanctx_conf->def.chan->band; 1611 rcu_read_unlock(); 1612 1613 return local->hw.wiphy->bands[band]; 1614 } 1615 1616 /* this struct holds the value parsing from channel switch IE */ 1617 struct ieee80211_csa_ie { 1618 struct cfg80211_chan_def chandef; 1619 u8 mode; 1620 u8 count; 1621 u8 ttl; 1622 u16 pre_value; 1623 u16 reason_code; 1624 u32 max_switch_time; 1625 }; 1626 1627 /* Parsed Information Elements */ 1628 struct ieee802_11_elems { 1629 const u8 *ie_start; 1630 size_t total_len; 1631 u32 crc; 1632 1633 /* pointers to IEs */ 1634 const struct ieee80211_tdls_lnkie *lnk_id; 1635 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1636 const u8 *ext_capab; 1637 const u8 *ssid; 1638 const u8 *supp_rates; 1639 const u8 *ds_params; 1640 const struct ieee80211_tim_ie *tim; 1641 const u8 *rsn; 1642 const u8 *rsnx; 1643 const u8 *erp_info; 1644 const u8 *ext_supp_rates; 1645 const u8 *wmm_info; 1646 const u8 *wmm_param; 1647 const struct ieee80211_ht_cap *ht_cap_elem; 1648 const struct ieee80211_ht_operation *ht_operation; 1649 const struct ieee80211_vht_cap *vht_cap_elem; 1650 const struct ieee80211_vht_operation *vht_operation; 1651 const struct ieee80211_meshconf_ie *mesh_config; 1652 const u8 *he_cap; 1653 const struct ieee80211_he_operation *he_operation; 1654 const struct ieee80211_he_spr *he_spr; 1655 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1656 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1657 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1658 const u8 *uora_element; 1659 const u8 *mesh_id; 1660 const u8 *peering; 1661 const __le16 *awake_window; 1662 const u8 *preq; 1663 const u8 *prep; 1664 const u8 *perr; 1665 const struct ieee80211_rann_ie *rann; 1666 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1667 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1668 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1669 const u8 *max_channel_switch_time; 1670 const u8 *country_elem; 1671 const u8 *pwr_constr_elem; 1672 const u8 *cisco_dtpc_elem; 1673 const struct ieee80211_timeout_interval_ie *timeout_int; 1674 const u8 *opmode_notif; 1675 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1676 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1677 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1678 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1679 const struct ieee80211_bssid_index *bssid_index; 1680 u8 max_bssid_indicator; 1681 u8 dtim_count; 1682 u8 dtim_period; 1683 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1684 const struct ieee80211_s1g_cap *s1g_capab; 1685 const struct ieee80211_s1g_oper_ie *s1g_oper; 1686 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1687 const struct ieee80211_aid_response_ie *aid_resp; 1688 const struct ieee80211_eht_cap_elem *eht_cap; 1689 const struct ieee80211_eht_operation *eht_operation; 1690 const struct ieee80211_multi_link_elem *multi_link; 1691 1692 /* length of them, respectively */ 1693 u8 ext_capab_len; 1694 u8 ssid_len; 1695 u8 supp_rates_len; 1696 u8 tim_len; 1697 u8 rsn_len; 1698 u8 rsnx_len; 1699 u8 ext_supp_rates_len; 1700 u8 wmm_info_len; 1701 u8 wmm_param_len; 1702 u8 he_cap_len; 1703 u8 mesh_id_len; 1704 u8 peering_len; 1705 u8 preq_len; 1706 u8 prep_len; 1707 u8 perr_len; 1708 u8 country_elem_len; 1709 u8 bssid_index_len; 1710 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1711 u8 tx_pwr_env_num; 1712 u8 eht_cap_len; 1713 1714 /* mult-link element can be de-fragmented and thus u8 is not sufficient */ 1715 size_t multi_link_len; 1716 1717 /* 1718 * store the per station profile pointer and length in case that the 1719 * parsing also handled Multi-Link element parsing for a specific link 1720 * ID. 1721 */ 1722 struct ieee80211_mle_per_sta_profile *prof; 1723 size_t sta_prof_len; 1724 1725 /* whether a parse error occurred while retrieving these elements */ 1726 bool parse_error; 1727 1728 /* 1729 * scratch buffer that can be used for various element parsing related 1730 * tasks, e.g., element de-fragmentation etc. 1731 */ 1732 size_t scratch_len; 1733 u8 *scratch_pos; 1734 u8 scratch[]; 1735 }; 1736 1737 static inline struct ieee80211_local *hw_to_local( 1738 struct ieee80211_hw *hw) 1739 { 1740 return container_of(hw, struct ieee80211_local, hw); 1741 } 1742 1743 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1744 { 1745 return container_of(txq, struct txq_info, txq); 1746 } 1747 1748 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1749 { 1750 struct txq_info *txqi = to_txq_info(txq); 1751 1752 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1753 } 1754 1755 static inline bool 1756 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1757 { 1758 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1759 status->flag & RX_FLAG_MACTIME_END); 1760 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1761 RX_FLAG_MACTIME_PLCP_START)); 1762 } 1763 1764 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1765 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1766 1767 /* This function returns the number of multicast stations connected to this 1768 * interface. It returns -1 if that number is not tracked, that is for netdevs 1769 * not in AP or AP_VLAN mode or when using 4addr. 1770 */ 1771 static inline int 1772 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1773 { 1774 if (sdata->vif.type == NL80211_IFTYPE_AP) 1775 return atomic_read(&sdata->u.ap.num_mcast_sta); 1776 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1777 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1778 return -1; 1779 } 1780 1781 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1782 struct ieee80211_rx_status *status, 1783 unsigned int mpdu_len, 1784 unsigned int mpdu_offset); 1785 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1786 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1787 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1788 u64 changed); 1789 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1790 u64 changed); 1791 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1792 struct ieee80211_link_data *link, 1793 u64 changed); 1794 void ieee80211_configure_filter(struct ieee80211_local *local); 1795 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1796 1797 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1798 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1799 u64 *cookie, gfp_t gfp); 1800 1801 void ieee80211_check_fast_rx(struct sta_info *sta); 1802 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1803 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1804 void ieee80211_clear_fast_rx(struct sta_info *sta); 1805 1806 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1807 const u8 *addr, int *out_link_id); 1808 1809 /* STA code */ 1810 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1811 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1812 struct cfg80211_auth_request *req); 1813 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1814 struct cfg80211_assoc_request *req); 1815 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1816 struct cfg80211_deauth_request *req); 1817 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1818 struct cfg80211_disassoc_request *req); 1819 void ieee80211_send_pspoll(struct ieee80211_local *local, 1820 struct ieee80211_sub_if_data *sdata); 1821 void ieee80211_recalc_ps(struct ieee80211_local *local); 1822 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1823 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1824 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1825 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1826 struct sk_buff *skb); 1827 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1828 struct sk_buff *skb); 1829 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1830 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1831 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1832 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1833 __le16 fc, bool acked); 1834 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1835 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1836 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1837 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1838 u8 reason, bool tx); 1839 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1840 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1841 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link); 1842 1843 /* IBSS code */ 1844 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1845 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1846 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1847 const u8 *bssid, const u8 *addr, u32 supp_rates); 1848 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1849 struct cfg80211_ibss_params *params); 1850 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1851 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1852 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1853 struct sk_buff *skb); 1854 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1855 struct cfg80211_csa_settings *csa_settings); 1856 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1857 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1858 1859 /* OCB code */ 1860 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1861 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1862 const u8 *bssid, const u8 *addr, u32 supp_rates); 1863 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1864 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1865 struct ocb_setup *setup); 1866 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1867 1868 /* mesh code */ 1869 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1870 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1871 struct sk_buff *skb); 1872 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1873 struct cfg80211_csa_settings *csa_settings); 1874 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1875 1876 /* scan/BSS handling */ 1877 void ieee80211_scan_work(struct work_struct *work); 1878 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1879 const u8 *ssid, u8 ssid_len, 1880 struct ieee80211_channel **channels, 1881 unsigned int n_channels, 1882 enum nl80211_bss_scan_width scan_width); 1883 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1884 struct cfg80211_scan_request *req); 1885 void ieee80211_scan_cancel(struct ieee80211_local *local); 1886 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1887 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1888 1889 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1890 struct ieee80211_bss * 1891 ieee80211_bss_info_update(struct ieee80211_local *local, 1892 struct ieee80211_rx_status *rx_status, 1893 struct ieee80211_mgmt *mgmt, 1894 size_t len, 1895 struct ieee80211_channel *channel); 1896 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1897 struct ieee80211_bss *bss); 1898 1899 /* scheduled scan handling */ 1900 int 1901 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1902 struct cfg80211_sched_scan_request *req); 1903 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1904 struct cfg80211_sched_scan_request *req); 1905 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1906 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1907 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1908 1909 /* off-channel/mgmt-tx */ 1910 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1911 void ieee80211_offchannel_return(struct ieee80211_local *local); 1912 void ieee80211_roc_setup(struct ieee80211_local *local); 1913 void ieee80211_start_next_roc(struct ieee80211_local *local); 1914 void ieee80211_roc_purge(struct ieee80211_local *local, 1915 struct ieee80211_sub_if_data *sdata); 1916 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1917 struct ieee80211_channel *chan, 1918 unsigned int duration, u64 *cookie); 1919 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1920 struct wireless_dev *wdev, u64 cookie); 1921 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1922 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1923 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1924 struct wireless_dev *wdev, u64 cookie); 1925 1926 /* channel switch handling */ 1927 void ieee80211_csa_finalize_work(struct work_struct *work); 1928 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1929 struct cfg80211_csa_settings *params); 1930 1931 /* color change handling */ 1932 void ieee80211_color_change_finalize_work(struct work_struct *work); 1933 void ieee80211_color_collision_detection_work(struct work_struct *work); 1934 1935 /* interface handling */ 1936 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1937 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1938 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1939 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1940 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1941 MAC80211_SUPPORTED_FEATURES_RX) 1942 1943 int ieee80211_iface_init(void); 1944 void ieee80211_iface_exit(void); 1945 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1946 unsigned char name_assign_type, 1947 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1948 struct vif_params *params); 1949 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1950 enum nl80211_iftype type); 1951 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1952 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1953 u32 ieee80211_idle_off(struct ieee80211_local *local); 1954 void ieee80211_recalc_idle(struct ieee80211_local *local); 1955 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1956 const int offset); 1957 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1958 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1959 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1960 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1961 1962 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1963 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1964 bool update_bss); 1965 void ieee80211_recalc_offload(struct ieee80211_local *local); 1966 1967 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1968 { 1969 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1970 } 1971 1972 /* link handling */ 1973 void ieee80211_link_setup(struct ieee80211_link_data *link); 1974 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, 1975 int link_id, 1976 struct ieee80211_link_data *link, 1977 struct ieee80211_bss_conf *link_conf); 1978 void ieee80211_link_stop(struct ieee80211_link_data *link); 1979 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 1980 u16 new_links); 1981 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata); 1982 1983 /* tx handling */ 1984 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1985 void ieee80211_tx_pending(struct tasklet_struct *t); 1986 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1987 struct net_device *dev); 1988 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1989 struct net_device *dev); 1990 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1991 struct net_device *dev); 1992 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1993 struct net_device *dev, 1994 u32 info_flags, 1995 u32 ctrl_flags, 1996 u64 *cookie); 1997 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1998 struct sk_buff_head *skbs); 1999 struct sk_buff * 2000 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2001 struct sk_buff *skb, u32 info_flags); 2002 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2003 int retry_count, int shift, bool send_to_cooked, 2004 struct ieee80211_tx_status *status); 2005 2006 void ieee80211_check_fast_xmit(struct sta_info *sta); 2007 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2008 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2009 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2010 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2011 const u8 *buf, size_t len, 2012 const u8 *dest, __be16 proto, bool unencrypted, 2013 int link_id, u64 *cookie); 2014 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2015 const u8 *buf, size_t len); 2016 2017 /* HT */ 2018 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2019 struct ieee80211_sta_ht_cap *ht_cap); 2020 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2021 struct ieee80211_supported_band *sband, 2022 const struct ieee80211_ht_cap *ht_cap_ie, 2023 struct link_sta_info *link_sta); 2024 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2025 const u8 *da, u16 tid, 2026 u16 initiator, u16 reason_code); 2027 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2028 enum ieee80211_smps_mode smps, const u8 *da, 2029 const u8 *bssid); 2030 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2031 enum ieee80211_smps_mode smps_mode_new); 2032 2033 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2034 u16 initiator, u16 reason, bool stop); 2035 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2036 u16 initiator, u16 reason, bool stop); 2037 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2038 u8 dialog_token, u16 timeout, 2039 u16 start_seq_num, u16 ba_policy, u16 tid, 2040 u16 buf_size, bool tx, bool auto_seq, 2041 const struct ieee80211_addba_ext_ie *addbaext); 2042 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2043 enum ieee80211_agg_stop_reason reason); 2044 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2045 struct sta_info *sta, 2046 struct ieee80211_mgmt *mgmt, size_t len); 2047 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2048 struct sta_info *sta, 2049 struct ieee80211_mgmt *mgmt, 2050 size_t len); 2051 void ieee80211_process_addba_request(struct ieee80211_local *local, 2052 struct sta_info *sta, 2053 struct ieee80211_mgmt *mgmt, 2054 size_t len); 2055 2056 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2057 enum ieee80211_agg_stop_reason reason); 2058 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2059 enum ieee80211_agg_stop_reason reason); 2060 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2061 struct tid_ampdu_tx *tid_tx); 2062 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2063 struct tid_ampdu_tx *tid_tx); 2064 void ieee80211_ba_session_work(struct work_struct *work); 2065 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2066 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2067 2068 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2069 enum nl80211_smps_mode 2070 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2071 2072 /* VHT */ 2073 void 2074 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2075 struct ieee80211_supported_band *sband, 2076 const struct ieee80211_vht_cap *vht_cap_ie, 2077 struct link_sta_info *link_sta); 2078 enum ieee80211_sta_rx_bandwidth 2079 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta); 2080 enum ieee80211_sta_rx_bandwidth 2081 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta); 2082 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta); 2083 enum ieee80211_sta_rx_bandwidth 2084 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2085 enum nl80211_chan_width 2086 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2087 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2088 struct ieee80211_link_data *link, 2089 struct ieee80211_mgmt *mgmt); 2090 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2091 struct link_sta_info *sta, 2092 u8 opmode, enum nl80211_band band); 2093 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2094 struct link_sta_info *sta, 2095 u8 opmode, enum nl80211_band band); 2096 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2097 struct ieee80211_sta_vht_cap *vht_cap); 2098 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2099 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2100 enum nl80211_chan_width 2101 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2102 2103 /* HE */ 2104 void 2105 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2106 struct ieee80211_supported_band *sband, 2107 const u8 *he_cap_ie, u8 he_cap_len, 2108 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2109 struct link_sta_info *link_sta); 2110 void 2111 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2112 const struct ieee80211_he_spr *he_spr_ie_elem); 2113 2114 void 2115 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2116 const struct ieee80211_he_operation *he_op_ie_elem); 2117 2118 /* S1G */ 2119 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2120 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2121 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2122 struct sk_buff *skb); 2123 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2124 struct sk_buff *skb); 2125 2126 /* Spectrum management */ 2127 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2128 struct ieee80211_mgmt *mgmt, 2129 size_t len); 2130 /** 2131 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2132 * @sdata: the sdata of the interface which has received the frame 2133 * @elems: parsed 802.11 elements received with the frame 2134 * @current_band: indicates the current band 2135 * @vht_cap_info: VHT capabilities of the transmitter 2136 * @conn_flags: contains information about own capabilities and restrictions 2137 * to decide which channel switch announcements can be accepted, using 2138 * flags from &enum ieee80211_conn_flags. 2139 * @bssid: the currently connected bssid (for reporting) 2140 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2141 All of them will be filled with if success only. 2142 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2143 */ 2144 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2145 struct ieee802_11_elems *elems, 2146 enum nl80211_band current_band, 2147 u32 vht_cap_info, 2148 ieee80211_conn_flags_t conn_flags, u8 *bssid, 2149 struct ieee80211_csa_ie *csa_ie); 2150 2151 /* Suspend/resume and hw reconfiguration */ 2152 int ieee80211_reconfig(struct ieee80211_local *local); 2153 void ieee80211_stop_device(struct ieee80211_local *local); 2154 2155 int __ieee80211_suspend(struct ieee80211_hw *hw, 2156 struct cfg80211_wowlan *wowlan); 2157 2158 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2159 { 2160 struct ieee80211_local *local = hw_to_local(hw); 2161 2162 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2163 !test_bit(SCAN_COMPLETED, &local->scanning), 2164 "%s: resume with hardware scan still in progress\n", 2165 wiphy_name(hw->wiphy)); 2166 2167 return ieee80211_reconfig(hw_to_local(hw)); 2168 } 2169 2170 /* utility functions/constants */ 2171 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2172 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2173 int rate, int erp, int short_preamble, 2174 int shift); 2175 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2176 struct ieee80211_tx_queue_params *qparam, 2177 int ac); 2178 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2179 bool bss_notify, bool enable_qos); 2180 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2181 struct sta_info *sta, struct sk_buff *skb); 2182 2183 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2184 struct sk_buff *skb, int tid, int link_id, 2185 enum nl80211_band band); 2186 2187 /* sta_out needs to be checked for ERR_PTR() before using */ 2188 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2189 struct sk_buff *skb, 2190 struct sta_info **sta_out); 2191 2192 static inline void 2193 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2194 struct sk_buff *skb, int tid, 2195 enum nl80211_band band) 2196 { 2197 rcu_read_lock(); 2198 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2199 rcu_read_unlock(); 2200 } 2201 2202 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2203 struct sk_buff *skb, int tid, int link_id); 2204 2205 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2206 struct sk_buff *skb) 2207 { 2208 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2209 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2210 } 2211 2212 /** 2213 * struct ieee80211_elems_parse_params - element parsing parameters 2214 * @start: pointer to the elements 2215 * @len: length of the elements 2216 * @action: %true if the elements came from an action frame 2217 * @filter: bitmap of element IDs to filter out while calculating 2218 * the element CRC 2219 * @crc: CRC starting value 2220 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2221 * represent a non-transmitting BSS in which case the data 2222 * for that non-transmitting BSS is returned 2223 * @link_id: the link ID to parse elements for, if a STA profile 2224 * is present in the multi-link element, or -1 to ignore; 2225 * note that the code currently assumes parsing an association 2226 * (or re-association) response frame if this is given 2227 * @from_ap: frame is received from an AP (currently used only 2228 * for EHT capabilities parsing) 2229 * @scratch_len: if non zero, specifies the requested length of the scratch 2230 * buffer; otherwise, 'len' is used. 2231 */ 2232 struct ieee80211_elems_parse_params { 2233 const u8 *start; 2234 size_t len; 2235 bool action; 2236 u64 filter; 2237 u32 crc; 2238 struct cfg80211_bss *bss; 2239 int link_id; 2240 bool from_ap; 2241 size_t scratch_len; 2242 }; 2243 2244 struct ieee802_11_elems * 2245 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2246 2247 static inline struct ieee802_11_elems * 2248 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2249 u64 filter, u32 crc, 2250 struct cfg80211_bss *bss) 2251 { 2252 struct ieee80211_elems_parse_params params = { 2253 .start = start, 2254 .len = len, 2255 .action = action, 2256 .filter = filter, 2257 .crc = crc, 2258 .bss = bss, 2259 .link_id = -1, 2260 }; 2261 2262 return ieee802_11_parse_elems_full(¶ms); 2263 } 2264 2265 static inline struct ieee802_11_elems * 2266 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2267 struct cfg80211_bss *bss) 2268 { 2269 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2270 } 2271 2272 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos); 2273 2274 extern const int ieee802_1d_to_ac[8]; 2275 2276 static inline int ieee80211_ac_from_tid(int tid) 2277 { 2278 return ieee802_1d_to_ac[tid & 7]; 2279 } 2280 2281 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2282 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2283 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2284 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2285 struct ieee80211_sub_if_data *sdata, 2286 bool powersave); 2287 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2288 struct ieee80211_sub_if_data *sdata); 2289 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2290 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2291 2292 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2293 unsigned long queues, 2294 enum queue_stop_reason reason, 2295 bool refcounted); 2296 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2297 struct ieee80211_sub_if_data *sdata, 2298 enum queue_stop_reason reason); 2299 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2300 struct ieee80211_sub_if_data *sdata, 2301 enum queue_stop_reason reason); 2302 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2303 unsigned long queues, 2304 enum queue_stop_reason reason, 2305 bool refcounted); 2306 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2307 enum queue_stop_reason reason, 2308 bool refcounted); 2309 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2310 enum queue_stop_reason reason, 2311 bool refcounted); 2312 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2313 struct sk_buff *skb); 2314 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2315 struct sk_buff_head *skbs); 2316 void ieee80211_flush_queues(struct ieee80211_local *local, 2317 struct ieee80211_sub_if_data *sdata, bool drop); 2318 void __ieee80211_flush_queues(struct ieee80211_local *local, 2319 struct ieee80211_sub_if_data *sdata, 2320 unsigned int queues, bool drop); 2321 2322 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2323 { 2324 /* 2325 * It's unsafe to try to do any work during reconfigure flow. 2326 * When the flow ends the work will be requeued. 2327 */ 2328 if (local->in_reconfig) 2329 return false; 2330 2331 /* 2332 * If quiescing is set, we are racing with __ieee80211_suspend. 2333 * __ieee80211_suspend flushes the workers after setting quiescing, 2334 * and we check quiescing / suspended before enqueing new workers. 2335 * We should abort the worker to avoid the races below. 2336 */ 2337 if (local->quiescing) 2338 return false; 2339 2340 /* 2341 * We might already be suspended if the following scenario occurs: 2342 * __ieee80211_suspend Control path 2343 * 2344 * if (local->quiescing) 2345 * return; 2346 * local->quiescing = true; 2347 * flush_workqueue(); 2348 * queue_work(...); 2349 * local->suspended = true; 2350 * local->quiescing = false; 2351 * worker starts running... 2352 */ 2353 if (local->suspended) 2354 return false; 2355 2356 return true; 2357 } 2358 2359 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2360 void ieee80211_txq_set_params(struct ieee80211_local *local); 2361 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2362 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2363 struct sta_info *sta, 2364 struct txq_info *txq, int tid); 2365 void ieee80211_txq_purge(struct ieee80211_local *local, 2366 struct txq_info *txqi); 2367 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2368 struct ieee80211_sub_if_data *sdata); 2369 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2370 struct txq_info *txqi); 2371 void ieee80211_wake_txqs(struct tasklet_struct *t); 2372 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2373 u16 transaction, u16 auth_alg, u16 status, 2374 const u8 *extra, size_t extra_len, const u8 *bssid, 2375 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2376 u32 tx_flags); 2377 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2378 const u8 *da, const u8 *bssid, 2379 u16 stype, u16 reason, 2380 bool send_frame, u8 *frame_buf); 2381 2382 enum { 2383 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2384 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2385 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2386 }; 2387 2388 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2389 size_t buffer_len, 2390 struct ieee80211_scan_ies *ie_desc, 2391 const u8 *ie, size_t ie_len, 2392 u8 bands_used, u32 *rate_masks, 2393 struct cfg80211_chan_def *chandef, 2394 u32 flags); 2395 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2396 const u8 *src, const u8 *dst, 2397 u32 ratemask, 2398 struct ieee80211_channel *chan, 2399 const u8 *ssid, size_t ssid_len, 2400 const u8 *ie, size_t ie_len, 2401 u32 flags); 2402 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2403 struct ieee802_11_elems *elems, 2404 enum nl80211_band band, u32 *basic_rates); 2405 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2406 struct ieee80211_link_data *link, 2407 enum ieee80211_smps_mode smps_mode); 2408 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2409 struct ieee80211_link_data *link); 2410 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2411 int link_id); 2412 2413 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2414 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2415 u16 cap); 2416 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2417 const struct cfg80211_chan_def *chandef, 2418 u16 prot_mode, bool rifs_mode); 2419 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2420 const struct cfg80211_chan_def *chandef); 2421 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2422 u32 cap); 2423 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2424 const struct cfg80211_chan_def *chandef); 2425 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2426 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, 2427 const struct ieee80211_sta_he_cap *he_cap, 2428 u8 *end); 2429 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2430 enum ieee80211_smps_mode smps_mode, 2431 struct sk_buff *skb); 2432 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2433 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2434 const struct ieee80211_supported_band *sband, 2435 const u8 *srates, int srates_len, u32 *rates); 2436 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2437 struct sk_buff *skb, bool need_basic, 2438 enum nl80211_band band); 2439 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2440 struct sk_buff *skb, bool need_basic, 2441 enum nl80211_band band); 2442 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2443 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2444 struct ieee80211_sta_s1g_cap *caps, 2445 struct sk_buff *skb); 2446 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2447 struct sk_buff *skb); 2448 2449 /* channel management */ 2450 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2451 struct cfg80211_chan_def *chandef); 2452 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2453 const struct ieee80211_vht_operation *oper, 2454 const struct ieee80211_ht_operation *htop, 2455 struct cfg80211_chan_def *chandef); 2456 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper, 2457 bool support_160, bool support_320, 2458 struct cfg80211_chan_def *chandef); 2459 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2460 const struct ieee80211_he_operation *he_oper, 2461 const struct ieee80211_eht_operation *eht_oper, 2462 struct cfg80211_chan_def *chandef); 2463 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2464 struct cfg80211_chan_def *chandef); 2465 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2466 2467 int __must_check 2468 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2469 const struct cfg80211_chan_def *chandef, 2470 enum ieee80211_chanctx_mode mode); 2471 int __must_check 2472 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2473 const struct cfg80211_chan_def *chandef, 2474 enum ieee80211_chanctx_mode mode, 2475 bool radar_required); 2476 int __must_check 2477 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2478 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2479 2480 int __must_check 2481 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, 2482 const struct cfg80211_chan_def *chandef, 2483 u64 *changed); 2484 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2485 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2486 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2487 bool clear); 2488 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2489 struct ieee80211_chanctx *ctx); 2490 2491 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2492 struct ieee80211_chanctx *chanctx); 2493 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2494 struct ieee80211_chanctx *ctx); 2495 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2496 2497 void ieee80211_dfs_cac_timer(unsigned long data); 2498 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2499 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2500 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2501 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2502 struct cfg80211_csa_settings *csa_settings); 2503 2504 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2505 struct ieee80211_sub_if_data *sdata); 2506 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2507 const struct cfg80211_chan_def *chandef, 2508 enum ieee80211_chanctx_mode chanmode, 2509 u8 radar_detect); 2510 int ieee80211_max_num_channels(struct ieee80211_local *local); 2511 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2512 struct ieee80211_chanctx *ctx); 2513 2514 /* TDLS */ 2515 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2516 const u8 *peer, u8 action_code, u8 dialog_token, 2517 u16 status_code, u32 peer_capability, 2518 bool initiator, const u8 *extra_ies, 2519 size_t extra_ies_len); 2520 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2521 const u8 *peer, enum nl80211_tdls_operation oper); 2522 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2523 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2524 const u8 *addr, u8 oper_class, 2525 struct cfg80211_chan_def *chandef); 2526 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2527 struct net_device *dev, 2528 const u8 *addr); 2529 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2530 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2531 const u8 *peer, u16 reason); 2532 void 2533 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2534 struct sk_buff *skb); 2535 2536 2537 const char *ieee80211_get_reason_code_string(u16 reason_code); 2538 u16 ieee80211_encode_usf(int val); 2539 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2540 enum nl80211_iftype type); 2541 2542 extern const struct ethtool_ops ieee80211_ethtool_ops; 2543 2544 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2545 struct ieee80211_vif *vif, 2546 struct ieee80211_sta *pubsta, 2547 int len, bool ampdu); 2548 #ifdef CONFIG_MAC80211_NOINLINE 2549 #define debug_noinline noinline 2550 #else 2551 #define debug_noinline 2552 #endif 2553 2554 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2555 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2556 2557 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2558 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2559 const struct ieee80211_sta_he_cap *he_cap, 2560 const struct ieee80211_sta_eht_cap *eht_cap, 2561 u8 *end, 2562 bool for_ap); 2563 2564 void 2565 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2566 struct ieee80211_supported_band *sband, 2567 const u8 *he_cap_ie, u8 he_cap_len, 2568 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2569 u8 eht_cap_len, 2570 struct link_sta_info *link_sta); 2571 #endif /* IEEE80211_I_H */ 2572