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 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 331 }; 332 333 #define PREQ_Q_F_START 0x1 334 #define PREQ_Q_F_REFRESH 0x2 335 struct mesh_preq_queue { 336 struct list_head list; 337 u8 dst[ETH_ALEN]; 338 u8 flags; 339 }; 340 341 struct ieee80211_roc_work { 342 struct list_head list; 343 344 struct ieee80211_sub_if_data *sdata; 345 346 struct ieee80211_channel *chan; 347 348 bool started, abort, hw_begun, notified; 349 bool on_channel; 350 351 unsigned long start_time; 352 353 u32 duration, req_duration; 354 struct sk_buff *frame; 355 u64 cookie, mgmt_tx_cookie; 356 enum ieee80211_roc_type type; 357 }; 358 359 /* flags used in struct ieee80211_if_managed.flags */ 360 enum ieee80211_sta_flags { 361 IEEE80211_STA_CONNECTION_POLL = BIT(1), 362 IEEE80211_STA_CONTROL_PORT = BIT(2), 363 IEEE80211_STA_MFP_ENABLED = BIT(6), 364 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 365 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 366 IEEE80211_STA_ENABLE_RRM = BIT(15), 367 }; 368 369 typedef u32 __bitwise ieee80211_conn_flags_t; 370 371 enum ieee80211_conn_flags { 372 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0), 373 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1), 374 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2), 375 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3), 376 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4), 377 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5), 378 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6), 379 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7), 380 }; 381 382 struct ieee80211_mgd_auth_data { 383 struct cfg80211_bss *bss; 384 unsigned long timeout; 385 int tries; 386 u16 algorithm, expected_transaction; 387 388 u8 key[WLAN_KEY_LEN_WEP104]; 389 u8 key_len, key_idx; 390 bool done, waiting; 391 bool peer_confirmed; 392 bool timeout_started; 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 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 416 417 u8 ap_addr[ETH_ALEN] __aligned(2); 418 419 /* this is for a workaround, so we use it only for non-MLO */ 420 const u8 *supp_rates; 421 u8 supp_rates_len; 422 423 unsigned long timeout; 424 int tries; 425 426 u8 prev_ap_addr[ETH_ALEN]; 427 u8 ssid[IEEE80211_MAX_SSID_LEN]; 428 u8 ssid_len; 429 bool wmm, uapsd; 430 bool need_beacon; 431 bool synced; 432 bool timeout_started; 433 bool s1g; 434 435 unsigned int assoc_link_id; 436 437 u8 fils_nonces[2 * FILS_NONCE_LEN]; 438 u8 fils_kek[FILS_MAX_KEK_LEN]; 439 size_t fils_kek_len; 440 441 size_t ie_len; 442 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 443 u8 ie[]; 444 }; 445 446 struct ieee80211_sta_tx_tspec { 447 /* timestamp of the first packet in the time slice */ 448 unsigned long time_slice_start; 449 450 u32 admitted_time; /* in usecs, unlike over the air */ 451 u8 tsid; 452 s8 up; /* signed to be able to invalidate with -1 during teardown */ 453 454 /* consumed TX time in microseconds in the time slice */ 455 u32 consumed_tx_time; 456 enum { 457 TX_TSPEC_ACTION_NONE = 0, 458 TX_TSPEC_ACTION_DOWNGRADE, 459 TX_TSPEC_ACTION_STOP_DOWNGRADE, 460 } action; 461 bool downgraded; 462 }; 463 464 DECLARE_EWMA(beacon_signal, 4, 4) 465 466 struct ieee80211_if_managed { 467 struct timer_list timer; 468 struct timer_list conn_mon_timer; 469 struct timer_list bcn_mon_timer; 470 struct work_struct monitor_work; 471 struct work_struct beacon_connection_loss_work; 472 struct work_struct csa_connection_drop_work; 473 474 unsigned long beacon_timeout; 475 unsigned long probe_timeout; 476 int probe_send_count; 477 bool nullfunc_failed; 478 u8 connection_loss:1, 479 driver_disconnect:1, 480 reconnect:1, 481 associated:1; 482 483 struct ieee80211_mgd_auth_data *auth_data; 484 struct ieee80211_mgd_assoc_data *assoc_data; 485 486 bool powersave; /* powersave requested for this iface */ 487 bool broken_ap; /* AP is broken -- turn off powersave */ 488 489 unsigned int flags; 490 491 bool status_acked; 492 bool status_received; 493 __le16 status_fc; 494 495 enum { 496 IEEE80211_MFP_DISABLED, 497 IEEE80211_MFP_OPTIONAL, 498 IEEE80211_MFP_REQUIRED 499 } mfp; /* management frame protection */ 500 501 /* 502 * Bitmask of enabled u-apsd queues, 503 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 504 * to take effect. 505 */ 506 unsigned int uapsd_queues; 507 508 /* 509 * Maximum number of buffered frames AP can deliver during a 510 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 511 * Needs a new association to take effect. 512 */ 513 unsigned int uapsd_max_sp_len; 514 515 u8 use_4addr; 516 517 /* 518 * State variables for keeping track of RSSI of the AP currently 519 * connected to and informing driver when RSSI has gone 520 * below/above a certain threshold. 521 */ 522 int rssi_min_thold, rssi_max_thold; 523 524 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 525 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 526 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 527 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 528 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 529 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 530 531 /* TDLS support */ 532 u8 tdls_peer[ETH_ALEN] __aligned(2); 533 struct delayed_work tdls_peer_del_work; 534 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 535 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 536 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 537 bool tdls_wider_bw_prohibited; 538 539 /* WMM-AC TSPEC support */ 540 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 541 /* Use a separate work struct so that we can do something here 542 * while the sdata->work is flushing the queues, for example. 543 * otherwise, in scenarios where we hardly get any traffic out 544 * on the BE queue, but there's a lot of VO traffic, we might 545 * get stuck in a downgraded situation and flush takes forever. 546 */ 547 struct delayed_work tx_tspec_wk; 548 549 /* Information elements from the last transmitted (Re)Association 550 * Request frame. 551 */ 552 u8 *assoc_req_ies; 553 size_t assoc_req_ies_len; 554 }; 555 556 struct ieee80211_if_ibss { 557 struct timer_list timer; 558 struct work_struct csa_connection_drop_work; 559 560 unsigned long last_scan_completed; 561 562 u32 basic_rates; 563 564 bool fixed_bssid; 565 bool fixed_channel; 566 bool privacy; 567 568 bool control_port; 569 bool userspace_handles_dfs; 570 571 u8 bssid[ETH_ALEN] __aligned(2); 572 u8 ssid[IEEE80211_MAX_SSID_LEN]; 573 u8 ssid_len, ie_len; 574 u8 *ie; 575 struct cfg80211_chan_def chandef; 576 577 unsigned long ibss_join_req; 578 /* probe response/beacon for IBSS */ 579 struct beacon_data __rcu *presp; 580 581 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 582 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 583 584 spinlock_t incomplete_lock; 585 struct list_head incomplete_stations; 586 587 enum { 588 IEEE80211_IBSS_MLME_SEARCH, 589 IEEE80211_IBSS_MLME_JOINED, 590 } state; 591 }; 592 593 /** 594 * struct ieee80211_if_ocb - OCB mode state 595 * 596 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 597 * @wrkq_flags: OCB deferred task action 598 * @incomplete_lock: delayed STA insertion lock 599 * @incomplete_stations: list of STAs waiting for delayed insertion 600 * @joined: indication if the interface is connected to an OCB network 601 */ 602 struct ieee80211_if_ocb { 603 struct timer_list housekeeping_timer; 604 unsigned long wrkq_flags; 605 606 spinlock_t incomplete_lock; 607 struct list_head incomplete_stations; 608 609 bool joined; 610 }; 611 612 /** 613 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 614 * 615 * these declarations define the interface, which enables 616 * vendor-specific mesh synchronization 617 * 618 */ 619 struct ieee802_11_elems; 620 struct ieee80211_mesh_sync_ops { 621 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 622 struct ieee80211_mgmt *mgmt, unsigned int len, 623 const struct ieee80211_meshconf_ie *mesh_cfg, 624 struct ieee80211_rx_status *rx_status); 625 626 /* should be called with beacon_data under RCU read lock */ 627 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 628 struct beacon_data *beacon); 629 /* add other framework functions here */ 630 }; 631 632 struct mesh_csa_settings { 633 struct rcu_head rcu_head; 634 struct cfg80211_csa_settings settings; 635 }; 636 637 /** 638 * struct mesh_table 639 * 640 * @known_gates: list of known mesh gates and their mpaths by the station. The 641 * gate's mpath may or may not be resolved and active. 642 * @gates_lock: protects updates to known_gates 643 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 644 * @walk_head: linked list containing all mesh_path objects 645 * @walk_lock: lock protecting walk_head 646 * @entries: number of entries in the table 647 */ 648 struct mesh_table { 649 struct hlist_head known_gates; 650 spinlock_t gates_lock; 651 struct rhashtable rhead; 652 struct hlist_head walk_head; 653 spinlock_t walk_lock; 654 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 655 }; 656 657 struct ieee80211_if_mesh { 658 struct timer_list housekeeping_timer; 659 struct timer_list mesh_path_timer; 660 struct timer_list mesh_path_root_timer; 661 662 unsigned long wrkq_flags; 663 unsigned long mbss_changed; 664 665 bool userspace_handles_dfs; 666 667 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 668 size_t mesh_id_len; 669 /* Active Path Selection Protocol Identifier */ 670 u8 mesh_pp_id; 671 /* Active Path Selection Metric Identifier */ 672 u8 mesh_pm_id; 673 /* Congestion Control Mode Identifier */ 674 u8 mesh_cc_id; 675 /* Synchronization Protocol Identifier */ 676 u8 mesh_sp_id; 677 /* Authentication Protocol Identifier */ 678 u8 mesh_auth_id; 679 /* Local mesh Sequence Number */ 680 u32 sn; 681 /* Last used PREQ ID */ 682 u32 preq_id; 683 atomic_t mpaths; 684 /* Timestamp of last SN update */ 685 unsigned long last_sn_update; 686 /* Time when it's ok to send next PERR */ 687 unsigned long next_perr; 688 /* Timestamp of last PREQ sent */ 689 unsigned long last_preq; 690 struct mesh_rmc *rmc; 691 spinlock_t mesh_preq_queue_lock; 692 struct mesh_preq_queue preq_queue; 693 int preq_queue_len; 694 struct mesh_stats mshstats; 695 struct mesh_config mshcfg; 696 atomic_t estab_plinks; 697 u32 mesh_seqnum; 698 bool accepting_plinks; 699 int num_gates; 700 struct beacon_data __rcu *beacon; 701 const u8 *ie; 702 u8 ie_len; 703 enum { 704 IEEE80211_MESH_SEC_NONE = 0x0, 705 IEEE80211_MESH_SEC_AUTHED = 0x1, 706 IEEE80211_MESH_SEC_SECURED = 0x2, 707 } security; 708 bool user_mpm; 709 /* Extensible Synchronization Framework */ 710 const struct ieee80211_mesh_sync_ops *sync_ops; 711 s64 sync_offset_clockdrift_max; 712 spinlock_t sync_offset_lock; 713 /* mesh power save */ 714 enum nl80211_mesh_power_mode nonpeer_pm; 715 int ps_peers_light_sleep; 716 int ps_peers_deep_sleep; 717 struct ps_data ps; 718 /* Channel Switching Support */ 719 struct mesh_csa_settings __rcu *csa; 720 enum { 721 IEEE80211_MESH_CSA_ROLE_NONE, 722 IEEE80211_MESH_CSA_ROLE_INIT, 723 IEEE80211_MESH_CSA_ROLE_REPEATER, 724 } csa_role; 725 u8 chsw_ttl; 726 u16 pre_value; 727 728 /* offset from skb->data while building IE */ 729 int meshconf_offset; 730 731 struct mesh_table mesh_paths; 732 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 733 int mesh_paths_generation; 734 int mpp_paths_generation; 735 }; 736 737 #ifdef CONFIG_MAC80211_MESH 738 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 739 do { (msh)->mshstats.name++; } while (0) 740 #else 741 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 742 do { } while (0) 743 #endif 744 745 /** 746 * enum ieee80211_sub_if_data_flags - virtual interface flags 747 * 748 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 749 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 750 * associated stations and deliver multicast frames both 751 * back to wireless media and to the local net stack. 752 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 753 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 754 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 755 * recovery 756 */ 757 enum ieee80211_sub_if_data_flags { 758 IEEE80211_SDATA_ALLMULTI = BIT(0), 759 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 760 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 761 IEEE80211_SDATA_IN_DRIVER = BIT(5), 762 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 763 }; 764 765 /** 766 * enum ieee80211_sdata_state_bits - virtual interface state bits 767 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 768 * mirrors netif_running() but is separate for interface type 769 * change handling while the interface is up 770 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 771 * mode, so queues are stopped 772 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 773 * to offchannel, reset when offchannel returns 774 */ 775 enum ieee80211_sdata_state_bits { 776 SDATA_STATE_RUNNING, 777 SDATA_STATE_OFFCHANNEL, 778 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 779 }; 780 781 /** 782 * enum ieee80211_chanctx_mode - channel context configuration mode 783 * 784 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 785 * multiple interfaces 786 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 787 * only by a single interface. This can be used for example for 788 * non-fixed channel IBSS. 789 */ 790 enum ieee80211_chanctx_mode { 791 IEEE80211_CHANCTX_SHARED, 792 IEEE80211_CHANCTX_EXCLUSIVE 793 }; 794 795 /** 796 * enum ieee80211_chanctx_replace_state - channel context replacement state 797 * 798 * This is used for channel context in-place reservations that require channel 799 * context switch/swap. 800 * 801 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 802 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 803 * by a (not yet registered) channel context pointed by %replace_ctx. 804 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 805 * replaces an existing channel context pointed to by %replace_ctx. 806 */ 807 enum ieee80211_chanctx_replace_state { 808 IEEE80211_CHANCTX_REPLACE_NONE, 809 IEEE80211_CHANCTX_WILL_BE_REPLACED, 810 IEEE80211_CHANCTX_REPLACES_OTHER, 811 }; 812 813 struct ieee80211_chanctx { 814 struct list_head list; 815 struct rcu_head rcu_head; 816 817 struct list_head assigned_links; 818 struct list_head reserved_links; 819 820 enum ieee80211_chanctx_replace_state replace_state; 821 struct ieee80211_chanctx *replace_ctx; 822 823 enum ieee80211_chanctx_mode mode; 824 bool driver_present; 825 826 struct ieee80211_chanctx_conf conf; 827 }; 828 829 struct mac80211_qos_map { 830 struct cfg80211_qos_map qos_map; 831 struct rcu_head rcu_head; 832 }; 833 834 enum txq_info_flags { 835 IEEE80211_TXQ_STOP, 836 IEEE80211_TXQ_AMPDU, 837 IEEE80211_TXQ_NO_AMSDU, 838 IEEE80211_TXQ_STOP_NETIF_TX, 839 }; 840 841 /** 842 * struct txq_info - per tid queue 843 * 844 * @tin: contains packets split into multiple flows 845 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 846 * a fq_flow which is already owned by a different tin 847 * @def_cvars: codel vars for @def_flow 848 * @frags: used to keep fragments created after dequeue 849 * @schedule_order: used with ieee80211_local->active_txqs 850 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 851 */ 852 struct txq_info { 853 struct fq_tin tin; 854 struct codel_vars def_cvars; 855 struct codel_stats cstats; 856 857 u16 schedule_round; 858 struct list_head schedule_order; 859 860 struct sk_buff_head frags; 861 862 unsigned long flags; 863 864 /* keep last! */ 865 struct ieee80211_txq txq; 866 }; 867 868 struct ieee80211_if_mntr { 869 u32 flags; 870 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 871 872 struct list_head list; 873 }; 874 875 /** 876 * struct ieee80211_if_nan - NAN state 877 * 878 * @conf: current NAN configuration 879 * @func_ids: a bitmap of available instance_id's 880 */ 881 struct ieee80211_if_nan { 882 struct cfg80211_nan_conf conf; 883 884 /* protects function_inst_ids */ 885 spinlock_t func_lock; 886 struct idr function_inst_ids; 887 }; 888 889 struct ieee80211_link_data_managed { 890 u8 bssid[ETH_ALEN] __aligned(2); 891 892 u8 dtim_period; 893 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 894 driver_smps_mode; /* smps mode request */ 895 896 ieee80211_conn_flags_t conn_flags; 897 898 s16 p2p_noa_index; 899 900 bool tdls_chan_switch_prohibited; 901 902 bool have_beacon; 903 bool tracking_signal_avg; 904 bool disable_wmm_tracking; 905 bool operating_11g_mode; 906 907 bool csa_waiting_bcn; 908 bool csa_ignored_same_chan; 909 struct timer_list chswitch_timer; 910 struct work_struct chswitch_work; 911 912 struct work_struct request_smps_work; 913 bool beacon_crc_valid; 914 u32 beacon_crc; 915 struct ewma_beacon_signal ave_beacon_signal; 916 int last_ave_beacon_signal; 917 918 /* 919 * Number of Beacon frames used in ave_beacon_signal. This can be used 920 * to avoid generating less reliable cqm events that would be based 921 * only on couple of received frames. 922 */ 923 unsigned int count_beacon_signal; 924 925 /* Number of times beacon loss was invoked. */ 926 unsigned int beacon_loss_count; 927 928 /* 929 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 930 * that triggered a cqm event. 0 indicates that no event has been 931 * generated for the current association. 932 */ 933 int last_cqm_event_signal; 934 935 int wmm_last_param_set; 936 int mu_edca_last_param_set; 937 938 struct cfg80211_bss *bss; 939 }; 940 941 struct ieee80211_link_data_ap { 942 struct beacon_data __rcu *beacon; 943 struct probe_resp __rcu *probe_resp; 944 struct fils_discovery_data __rcu *fils_discovery; 945 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 946 947 /* to be used after channel switch. */ 948 struct cfg80211_beacon_data *next_beacon; 949 }; 950 951 struct ieee80211_link_data { 952 struct ieee80211_sub_if_data *sdata; 953 unsigned int link_id; 954 955 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 956 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 957 958 /* multicast keys only */ 959 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 960 NUM_DEFAULT_MGMT_KEYS + 961 NUM_DEFAULT_BEACON_KEYS]; 962 struct ieee80211_key __rcu *default_multicast_key; 963 struct ieee80211_key __rcu *default_mgmt_key; 964 struct ieee80211_key __rcu *default_beacon_key; 965 966 struct work_struct csa_finalize_work; 967 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 968 969 bool operating_11g_mode; 970 971 struct cfg80211_chan_def csa_chandef; 972 973 struct work_struct color_change_finalize_work; 974 975 /* context reservation -- protected with chanctx_mtx */ 976 struct ieee80211_chanctx *reserved_chanctx; 977 struct cfg80211_chan_def reserved_chandef; 978 bool reserved_radar_required; 979 bool reserved_ready; 980 981 u8 needed_rx_chains; 982 enum ieee80211_smps_mode smps_mode; 983 984 int user_power_level; /* in dBm */ 985 int ap_power_level; /* in dBm */ 986 987 bool radar_required; 988 struct delayed_work dfs_cac_timer_work; 989 990 union { 991 struct ieee80211_link_data_managed mgd; 992 struct ieee80211_link_data_ap ap; 993 } u; 994 995 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 996 997 struct ieee80211_bss_conf *conf; 998 }; 999 1000 struct ieee80211_sub_if_data { 1001 struct list_head list; 1002 1003 struct wireless_dev wdev; 1004 1005 /* keys */ 1006 struct list_head key_list; 1007 1008 /* count for keys needing tailroom space allocation */ 1009 int crypto_tx_tailroom_needed_cnt; 1010 int crypto_tx_tailroom_pending_dec; 1011 struct delayed_work dec_tailroom_needed_wk; 1012 1013 struct net_device *dev; 1014 struct ieee80211_local *local; 1015 1016 unsigned int flags; 1017 1018 unsigned long state; 1019 1020 char name[IFNAMSIZ]; 1021 1022 struct ieee80211_fragment_cache frags; 1023 1024 /* TID bitmap for NoAck policy */ 1025 u16 noack_map; 1026 1027 /* bit field of ACM bits (BIT(802.1D tag)) */ 1028 u8 wmm_acm; 1029 1030 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1031 struct ieee80211_key __rcu *default_unicast_key; 1032 1033 u16 sequence_number; 1034 u16 mld_mcast_seq; 1035 __be16 control_port_protocol; 1036 bool control_port_no_encrypt; 1037 bool control_port_no_preauth; 1038 bool control_port_over_nl80211; 1039 1040 atomic_t num_tx_queued; 1041 struct mac80211_qos_map __rcu *qos_map; 1042 1043 /* used to reconfigure hardware SM PS */ 1044 struct work_struct recalc_smps; 1045 1046 struct work_struct work; 1047 struct sk_buff_head skb_queue; 1048 struct sk_buff_head status_queue; 1049 1050 /* 1051 * AP this belongs to: self in AP mode and 1052 * corresponding AP in VLAN mode, NULL for 1053 * all others (might be needed later in IBSS) 1054 */ 1055 struct ieee80211_if_ap *bss; 1056 1057 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1058 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1059 1060 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1061 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1062 1063 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1064 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1065 1066 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1067 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1068 bool beacon_rate_set; 1069 1070 union { 1071 struct ieee80211_if_ap ap; 1072 struct ieee80211_if_vlan vlan; 1073 struct ieee80211_if_managed mgd; 1074 struct ieee80211_if_ibss ibss; 1075 struct ieee80211_if_mesh mesh; 1076 struct ieee80211_if_ocb ocb; 1077 struct ieee80211_if_mntr mntr; 1078 struct ieee80211_if_nan nan; 1079 } u; 1080 1081 struct ieee80211_link_data deflink; 1082 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1083 1084 /* for ieee80211_set_active_links_async() */ 1085 struct work_struct activate_links_work; 1086 u16 desired_active_links; 1087 1088 #ifdef CONFIG_MAC80211_DEBUGFS 1089 struct { 1090 struct dentry *subdir_stations; 1091 struct dentry *default_unicast_key; 1092 struct dentry *default_multicast_key; 1093 struct dentry *default_mgmt_key; 1094 struct dentry *default_beacon_key; 1095 } debugfs; 1096 #endif 1097 1098 /* must be last, dynamically sized area in this! */ 1099 struct ieee80211_vif vif; 1100 }; 1101 1102 static inline 1103 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1104 { 1105 return container_of(p, struct ieee80211_sub_if_data, vif); 1106 } 1107 1108 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1109 __acquires(&sdata->wdev.mtx) 1110 { 1111 mutex_lock(&sdata->wdev.mtx); 1112 __acquire(&sdata->wdev.mtx); 1113 } 1114 1115 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1116 __releases(&sdata->wdev.mtx) 1117 { 1118 mutex_unlock(&sdata->wdev.mtx); 1119 __release(&sdata->wdev.mtx); 1120 } 1121 1122 #define sdata_dereference(p, sdata) \ 1123 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1124 1125 static inline void 1126 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1127 { 1128 lockdep_assert_held(&sdata->wdev.mtx); 1129 } 1130 1131 static inline int 1132 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width) 1133 { 1134 switch (width) { 1135 case NL80211_CHAN_WIDTH_5: 1136 return 2; 1137 case NL80211_CHAN_WIDTH_10: 1138 return 1; 1139 default: 1140 return 0; 1141 } 1142 } 1143 1144 static inline int 1145 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1146 { 1147 return ieee80211_chanwidth_get_shift(chandef->width); 1148 } 1149 1150 static inline int 1151 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1152 { 1153 struct ieee80211_chanctx_conf *chanctx_conf; 1154 int shift = 0; 1155 1156 rcu_read_lock(); 1157 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 1158 if (chanctx_conf) 1159 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1160 rcu_read_unlock(); 1161 1162 return shift; 1163 } 1164 1165 static inline int 1166 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems) 1167 { 1168 int i, len = 0; 1169 1170 if (!elems) 1171 return 0; 1172 1173 for (i = 0; i < elems->cnt; i++) 1174 len += elems->elem[i].len; 1175 1176 return len; 1177 } 1178 1179 enum { 1180 IEEE80211_RX_MSG = 1, 1181 IEEE80211_TX_STATUS_MSG = 2, 1182 }; 1183 1184 enum queue_stop_reason { 1185 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1186 IEEE80211_QUEUE_STOP_REASON_PS, 1187 IEEE80211_QUEUE_STOP_REASON_CSA, 1188 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1189 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1190 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1191 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1192 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1193 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1194 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1195 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1196 1197 IEEE80211_QUEUE_STOP_REASONS, 1198 }; 1199 1200 #ifdef CONFIG_MAC80211_LEDS 1201 struct tpt_led_trigger { 1202 char name[32]; 1203 const struct ieee80211_tpt_blink *blink_table; 1204 unsigned int blink_table_len; 1205 struct timer_list timer; 1206 struct ieee80211_local *local; 1207 unsigned long prev_traffic; 1208 unsigned long tx_bytes, rx_bytes; 1209 unsigned int active, want; 1210 bool running; 1211 }; 1212 #endif 1213 1214 /** 1215 * mac80211 scan flags - currently active scan mode 1216 * 1217 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1218 * well be on the operating channel 1219 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1220 * determine if we are on the operating channel or not 1221 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1222 * channel. This should not interrupt normal traffic. 1223 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1224 * that the scan completed. 1225 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1226 * a scan complete for an aborted scan. 1227 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1228 * cancelled. 1229 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1230 * and could send a probe request after receiving a beacon. 1231 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1232 */ 1233 enum { 1234 SCAN_SW_SCANNING, 1235 SCAN_HW_SCANNING, 1236 SCAN_ONCHANNEL_SCANNING, 1237 SCAN_COMPLETED, 1238 SCAN_ABORTED, 1239 SCAN_HW_CANCELLED, 1240 SCAN_BEACON_WAIT, 1241 SCAN_BEACON_DONE, 1242 }; 1243 1244 /** 1245 * enum mac80211_scan_state - scan state machine states 1246 * 1247 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1248 * determines if we should keep on scanning or switch back to the 1249 * operating channel 1250 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1251 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1252 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1253 * send out data 1254 * @SCAN_RESUME: Resume the scan and scan the next channel 1255 * @SCAN_ABORT: Abort the scan and go back to operating channel 1256 */ 1257 enum mac80211_scan_state { 1258 SCAN_DECISION, 1259 SCAN_SET_CHANNEL, 1260 SCAN_SEND_PROBE, 1261 SCAN_SUSPEND, 1262 SCAN_RESUME, 1263 SCAN_ABORT, 1264 }; 1265 1266 DECLARE_STATIC_KEY_FALSE(aql_disable); 1267 1268 struct ieee80211_local { 1269 /* embed the driver visible part. 1270 * don't cast (use the static inlines below), but we keep 1271 * it first anyway so they become a no-op */ 1272 struct ieee80211_hw hw; 1273 1274 struct fq fq; 1275 struct codel_vars *cvars; 1276 struct codel_params cparams; 1277 1278 /* protects active_txqs and txqi->schedule_order */ 1279 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1280 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1281 u16 schedule_round[IEEE80211_NUM_ACS]; 1282 1283 u16 airtime_flags; 1284 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1285 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1286 u32 aql_threshold; 1287 atomic_t aql_total_pending_airtime; 1288 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1289 1290 const struct ieee80211_ops *ops; 1291 1292 /* 1293 * private workqueue to mac80211. mac80211 makes this accessible 1294 * via ieee80211_queue_work() 1295 */ 1296 struct workqueue_struct *workqueue; 1297 1298 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1299 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1300 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1301 spinlock_t queue_stop_reason_lock; 1302 1303 int open_count; 1304 int monitors, cooked_mntrs; 1305 /* number of interfaces with corresponding FIF_ flags */ 1306 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1307 fif_probe_req; 1308 bool probe_req_reg; 1309 bool rx_mcast_action_reg; 1310 unsigned int filter_flags; /* FIF_* */ 1311 1312 bool wiphy_ciphers_allocated; 1313 1314 bool use_chanctx; 1315 1316 /* protects the aggregated multicast list and filter calls */ 1317 spinlock_t filter_lock; 1318 1319 /* used for uploading changed mc list */ 1320 struct work_struct reconfig_filter; 1321 1322 /* aggregated multicast list */ 1323 struct netdev_hw_addr_list mc_list; 1324 1325 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1326 1327 /* 1328 * suspended is true if we finished all the suspend _and_ we have 1329 * not yet come up from resume. This is to be used by mac80211 1330 * to ensure driver sanity during suspend and mac80211's own 1331 * sanity. It can eventually be used for WoW as well. 1332 */ 1333 bool suspended; 1334 1335 /* suspending is true during the whole suspend process */ 1336 bool suspending; 1337 1338 /* 1339 * Resuming is true while suspended, but when we're reprogramming the 1340 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1341 * again even though some other parts of the stack are still suspended 1342 * and we still drop received frames to avoid waking the stack. 1343 */ 1344 bool resuming; 1345 1346 /* 1347 * quiescing is true during the suspend process _only_ to 1348 * ease timer cancelling etc. 1349 */ 1350 bool quiescing; 1351 1352 /* device is started */ 1353 bool started; 1354 1355 /* device is during a HW reconfig */ 1356 bool in_reconfig; 1357 1358 /* wowlan is enabled -- don't reconfig on resume */ 1359 bool wowlan; 1360 1361 struct work_struct radar_detected_work; 1362 1363 /* number of RX chains the hardware has */ 1364 u8 rx_chains; 1365 1366 /* bitmap of which sbands were copied */ 1367 u8 sband_allocated; 1368 1369 int tx_headroom; /* required headroom for hardware/radiotap */ 1370 1371 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1372 * added to skb_queue will be processed, but frames in 1373 * skb_queue_unreliable may be dropped if the total length of these 1374 * queues increases over the limit. */ 1375 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1376 struct tasklet_struct tasklet; 1377 struct sk_buff_head skb_queue; 1378 struct sk_buff_head skb_queue_unreliable; 1379 1380 spinlock_t rx_path_lock; 1381 1382 /* Station data */ 1383 /* 1384 * The mutex only protects the list, hash table and 1385 * counter, reads are done with RCU. 1386 */ 1387 struct mutex sta_mtx; 1388 spinlock_t tim_lock; 1389 unsigned long num_sta; 1390 struct list_head sta_list; 1391 struct rhltable sta_hash; 1392 struct rhltable link_sta_hash; 1393 struct timer_list sta_cleanup; 1394 int sta_generation; 1395 1396 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1397 struct tasklet_struct tx_pending_tasklet; 1398 struct tasklet_struct wake_txqs_tasklet; 1399 1400 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1401 1402 /* number of interfaces with allmulti RX */ 1403 atomic_t iff_allmultis; 1404 1405 struct rate_control_ref *rate_ctrl; 1406 1407 struct arc4_ctx wep_tx_ctx; 1408 struct arc4_ctx wep_rx_ctx; 1409 u32 wep_iv; 1410 1411 /* see iface.c */ 1412 struct list_head interfaces; 1413 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1414 struct mutex iflist_mtx; 1415 1416 /* 1417 * Key mutex, protects sdata's key_list and sta_info's 1418 * key pointers and ptk_idx (write access, they're RCU.) 1419 */ 1420 struct mutex key_mtx; 1421 1422 /* mutex for scan and work locking */ 1423 struct mutex mtx; 1424 1425 /* Scanning and BSS list */ 1426 unsigned long scanning; 1427 struct cfg80211_ssid scan_ssid; 1428 struct cfg80211_scan_request *int_scan_req; 1429 struct cfg80211_scan_request __rcu *scan_req; 1430 struct ieee80211_scan_request *hw_scan_req; 1431 struct cfg80211_chan_def scan_chandef; 1432 enum nl80211_band hw_scan_band; 1433 int scan_channel_idx; 1434 int scan_ies_len; 1435 int hw_scan_ies_bufsize; 1436 struct cfg80211_scan_info scan_info; 1437 1438 struct work_struct sched_scan_stopped_work; 1439 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1440 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1441 u8 scan_addr[ETH_ALEN]; 1442 1443 unsigned long leave_oper_channel_time; 1444 enum mac80211_scan_state next_scan_state; 1445 struct delayed_work scan_work; 1446 struct ieee80211_sub_if_data __rcu *scan_sdata; 1447 /* For backward compatibility only -- do not use */ 1448 struct cfg80211_chan_def _oper_chandef; 1449 1450 /* Temporary remain-on-channel for off-channel operations */ 1451 struct ieee80211_channel *tmp_channel; 1452 1453 /* channel contexts */ 1454 struct list_head chanctx_list; 1455 struct mutex chanctx_mtx; 1456 1457 #ifdef CONFIG_MAC80211_LEDS 1458 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1459 struct led_trigger tpt_led; 1460 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1461 atomic_t radio_led_active, tpt_led_active; 1462 struct tpt_led_trigger *tpt_led_trigger; 1463 #endif 1464 1465 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1466 /* SNMP counters */ 1467 /* dot11CountersTable */ 1468 u32 dot11TransmittedFragmentCount; 1469 u32 dot11MulticastTransmittedFrameCount; 1470 u32 dot11FailedCount; 1471 u32 dot11RetryCount; 1472 u32 dot11MultipleRetryCount; 1473 u32 dot11FrameDuplicateCount; 1474 u32 dot11ReceivedFragmentCount; 1475 u32 dot11MulticastReceivedFrameCount; 1476 u32 dot11TransmittedFrameCount; 1477 1478 /* TX/RX handler statistics */ 1479 unsigned int tx_handlers_drop; 1480 unsigned int tx_handlers_queued; 1481 unsigned int tx_handlers_drop_wep; 1482 unsigned int tx_handlers_drop_not_assoc; 1483 unsigned int tx_handlers_drop_unauth_port; 1484 unsigned int rx_handlers_drop; 1485 unsigned int rx_handlers_queued; 1486 unsigned int rx_handlers_drop_nullfunc; 1487 unsigned int rx_handlers_drop_defrag; 1488 unsigned int tx_expand_skb_head; 1489 unsigned int tx_expand_skb_head_cloned; 1490 unsigned int rx_expand_skb_head_defrag; 1491 unsigned int rx_handlers_fragments; 1492 unsigned int tx_status_drop; 1493 #define I802_DEBUG_INC(c) (c)++ 1494 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1495 #define I802_DEBUG_INC(c) do { } while (0) 1496 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1497 1498 1499 int total_ps_buffered; /* total number of all buffered unicast and 1500 * multicast packets for power saving stations 1501 */ 1502 1503 bool pspolling; 1504 /* 1505 * PS can only be enabled when we have exactly one managed 1506 * interface (and monitors) in PS, this then points there. 1507 */ 1508 struct ieee80211_sub_if_data *ps_sdata; 1509 struct work_struct dynamic_ps_enable_work; 1510 struct work_struct dynamic_ps_disable_work; 1511 struct timer_list dynamic_ps_timer; 1512 struct notifier_block ifa_notifier; 1513 struct notifier_block ifa6_notifier; 1514 1515 /* 1516 * The dynamic ps timeout configured from user space via WEXT - 1517 * this will override whatever chosen by mac80211 internally. 1518 */ 1519 int dynamic_ps_forced_timeout; 1520 1521 int user_power_level; /* in dBm, for all interfaces */ 1522 1523 enum ieee80211_smps_mode smps_mode; 1524 1525 struct work_struct restart_work; 1526 1527 #ifdef CONFIG_MAC80211_DEBUGFS 1528 struct local_debugfsdentries { 1529 struct dentry *rcdir; 1530 struct dentry *keys; 1531 } debugfs; 1532 bool force_tx_status; 1533 #endif 1534 1535 /* 1536 * Remain-on-channel support 1537 */ 1538 struct delayed_work roc_work; 1539 struct list_head roc_list; 1540 struct work_struct hw_roc_start, hw_roc_done; 1541 unsigned long hw_roc_start_time; 1542 u64 roc_cookie_counter; 1543 1544 struct idr ack_status_frames; 1545 spinlock_t ack_status_lock; 1546 1547 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1548 1549 /* virtual monitor interface */ 1550 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1551 struct cfg80211_chan_def monitor_chandef; 1552 1553 /* extended capabilities provided by mac80211 */ 1554 u8 ext_capa[8]; 1555 }; 1556 1557 static inline struct ieee80211_sub_if_data * 1558 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1559 { 1560 return netdev_priv(dev); 1561 } 1562 1563 static inline struct ieee80211_sub_if_data * 1564 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1565 { 1566 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1567 } 1568 1569 static inline struct ieee80211_supported_band * 1570 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1571 { 1572 struct ieee80211_local *local = sdata->local; 1573 struct ieee80211_chanctx_conf *chanctx_conf; 1574 enum nl80211_band band; 1575 1576 WARN_ON(sdata->vif.valid_links); 1577 1578 rcu_read_lock(); 1579 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1580 1581 if (!chanctx_conf) { 1582 rcu_read_unlock(); 1583 return NULL; 1584 } 1585 1586 band = chanctx_conf->def.chan->band; 1587 rcu_read_unlock(); 1588 1589 return local->hw.wiphy->bands[band]; 1590 } 1591 1592 static inline struct ieee80211_supported_band * 1593 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1594 { 1595 struct ieee80211_local *local = link->sdata->local; 1596 struct ieee80211_chanctx_conf *chanctx_conf; 1597 enum nl80211_band band; 1598 1599 rcu_read_lock(); 1600 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1601 if (!chanctx_conf) { 1602 rcu_read_unlock(); 1603 return NULL; 1604 } 1605 1606 band = chanctx_conf->def.chan->band; 1607 rcu_read_unlock(); 1608 1609 return local->hw.wiphy->bands[band]; 1610 } 1611 1612 /* this struct holds the value parsing from channel switch IE */ 1613 struct ieee80211_csa_ie { 1614 struct cfg80211_chan_def chandef; 1615 u8 mode; 1616 u8 count; 1617 u8 ttl; 1618 u16 pre_value; 1619 u16 reason_code; 1620 u32 max_switch_time; 1621 }; 1622 1623 /* Parsed Information Elements */ 1624 struct ieee802_11_elems { 1625 const u8 *ie_start; 1626 size_t total_len; 1627 u32 crc; 1628 1629 /* pointers to IEs */ 1630 const struct ieee80211_tdls_lnkie *lnk_id; 1631 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1632 const u8 *ext_capab; 1633 const u8 *ssid; 1634 const u8 *supp_rates; 1635 const u8 *ds_params; 1636 const struct ieee80211_tim_ie *tim; 1637 const u8 *rsn; 1638 const u8 *rsnx; 1639 const u8 *erp_info; 1640 const u8 *ext_supp_rates; 1641 const u8 *wmm_info; 1642 const u8 *wmm_param; 1643 const struct ieee80211_ht_cap *ht_cap_elem; 1644 const struct ieee80211_ht_operation *ht_operation; 1645 const struct ieee80211_vht_cap *vht_cap_elem; 1646 const struct ieee80211_vht_operation *vht_operation; 1647 const struct ieee80211_meshconf_ie *mesh_config; 1648 const u8 *he_cap; 1649 const struct ieee80211_he_operation *he_operation; 1650 const struct ieee80211_he_spr *he_spr; 1651 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1652 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1653 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1654 const u8 *uora_element; 1655 const u8 *mesh_id; 1656 const u8 *peering; 1657 const __le16 *awake_window; 1658 const u8 *preq; 1659 const u8 *prep; 1660 const u8 *perr; 1661 const struct ieee80211_rann_ie *rann; 1662 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1663 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1664 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1665 const u8 *max_channel_switch_time; 1666 const u8 *country_elem; 1667 const u8 *pwr_constr_elem; 1668 const u8 *cisco_dtpc_elem; 1669 const struct ieee80211_timeout_interval_ie *timeout_int; 1670 const u8 *opmode_notif; 1671 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1672 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1673 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1674 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1675 const struct ieee80211_bssid_index *bssid_index; 1676 u8 max_bssid_indicator; 1677 u8 dtim_count; 1678 u8 dtim_period; 1679 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1680 const struct ieee80211_s1g_cap *s1g_capab; 1681 const struct ieee80211_s1g_oper_ie *s1g_oper; 1682 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1683 const struct ieee80211_aid_response_ie *aid_resp; 1684 const struct ieee80211_eht_cap_elem *eht_cap; 1685 const struct ieee80211_eht_operation *eht_operation; 1686 const struct ieee80211_multi_link_elem *multi_link; 1687 1688 /* length of them, respectively */ 1689 u8 ext_capab_len; 1690 u8 ssid_len; 1691 u8 supp_rates_len; 1692 u8 tim_len; 1693 u8 rsn_len; 1694 u8 rsnx_len; 1695 u8 ext_supp_rates_len; 1696 u8 wmm_info_len; 1697 u8 wmm_param_len; 1698 u8 he_cap_len; 1699 u8 mesh_id_len; 1700 u8 peering_len; 1701 u8 preq_len; 1702 u8 prep_len; 1703 u8 perr_len; 1704 u8 country_elem_len; 1705 u8 bssid_index_len; 1706 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1707 u8 tx_pwr_env_num; 1708 u8 eht_cap_len; 1709 1710 /* whether a parse error occurred while retrieving these elements */ 1711 bool parse_error; 1712 1713 /* 1714 * scratch buffer that can be used for various element parsing related 1715 * tasks, e.g., element de-fragmentation etc. 1716 */ 1717 size_t scratch_len; 1718 u8 *scratch_pos; 1719 u8 scratch[]; 1720 }; 1721 1722 static inline struct ieee80211_local *hw_to_local( 1723 struct ieee80211_hw *hw) 1724 { 1725 return container_of(hw, struct ieee80211_local, hw); 1726 } 1727 1728 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1729 { 1730 return container_of(txq, struct txq_info, txq); 1731 } 1732 1733 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1734 { 1735 struct txq_info *txqi = to_txq_info(txq); 1736 1737 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1738 } 1739 1740 static inline bool 1741 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1742 { 1743 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1744 status->flag & RX_FLAG_MACTIME_END); 1745 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1746 RX_FLAG_MACTIME_PLCP_START)); 1747 } 1748 1749 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1750 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1751 1752 /* This function returns the number of multicast stations connected to this 1753 * interface. It returns -1 if that number is not tracked, that is for netdevs 1754 * not in AP or AP_VLAN mode or when using 4addr. 1755 */ 1756 static inline int 1757 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1758 { 1759 if (sdata->vif.type == NL80211_IFTYPE_AP) 1760 return atomic_read(&sdata->u.ap.num_mcast_sta); 1761 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1762 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1763 return -1; 1764 } 1765 1766 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1767 struct ieee80211_rx_status *status, 1768 unsigned int mpdu_len, 1769 unsigned int mpdu_offset); 1770 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1771 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1772 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1773 u64 changed); 1774 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1775 u64 changed); 1776 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1777 struct ieee80211_link_data *link, 1778 u64 changed); 1779 void ieee80211_configure_filter(struct ieee80211_local *local); 1780 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1781 1782 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1783 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1784 u64 *cookie, gfp_t gfp); 1785 1786 void ieee80211_check_fast_rx(struct sta_info *sta); 1787 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1788 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1789 void ieee80211_clear_fast_rx(struct sta_info *sta); 1790 1791 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1792 const u8 *addr, int *out_link_id); 1793 1794 /* STA code */ 1795 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1796 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1797 struct cfg80211_auth_request *req); 1798 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1799 struct cfg80211_assoc_request *req); 1800 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1801 struct cfg80211_deauth_request *req); 1802 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1803 struct cfg80211_disassoc_request *req); 1804 void ieee80211_send_pspoll(struct ieee80211_local *local, 1805 struct ieee80211_sub_if_data *sdata); 1806 void ieee80211_recalc_ps(struct ieee80211_local *local); 1807 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1808 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1809 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1810 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1811 struct sk_buff *skb); 1812 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1813 struct sk_buff *skb); 1814 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1815 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1816 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1817 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1818 __le16 fc, bool acked); 1819 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1820 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1821 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1822 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1823 u8 reason, bool tx); 1824 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1825 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1826 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link); 1827 1828 /* IBSS code */ 1829 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1830 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1831 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1832 const u8 *bssid, const u8 *addr, u32 supp_rates); 1833 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1834 struct cfg80211_ibss_params *params); 1835 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1836 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1837 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1838 struct sk_buff *skb); 1839 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1840 struct cfg80211_csa_settings *csa_settings); 1841 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1842 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1843 1844 /* OCB code */ 1845 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1846 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1847 const u8 *bssid, const u8 *addr, u32 supp_rates); 1848 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1849 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1850 struct ocb_setup *setup); 1851 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1852 1853 /* mesh code */ 1854 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1855 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1856 struct sk_buff *skb); 1857 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1858 struct cfg80211_csa_settings *csa_settings); 1859 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1860 1861 /* scan/BSS handling */ 1862 void ieee80211_scan_work(struct work_struct *work); 1863 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1864 const u8 *ssid, u8 ssid_len, 1865 struct ieee80211_channel **channels, 1866 unsigned int n_channels, 1867 enum nl80211_bss_scan_width scan_width); 1868 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1869 struct cfg80211_scan_request *req); 1870 void ieee80211_scan_cancel(struct ieee80211_local *local); 1871 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1872 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1873 1874 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1875 struct ieee80211_bss * 1876 ieee80211_bss_info_update(struct ieee80211_local *local, 1877 struct ieee80211_rx_status *rx_status, 1878 struct ieee80211_mgmt *mgmt, 1879 size_t len, 1880 struct ieee80211_channel *channel); 1881 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1882 struct ieee80211_bss *bss); 1883 1884 /* scheduled scan handling */ 1885 int 1886 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1887 struct cfg80211_sched_scan_request *req); 1888 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1889 struct cfg80211_sched_scan_request *req); 1890 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1891 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1892 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1893 1894 /* off-channel/mgmt-tx */ 1895 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1896 void ieee80211_offchannel_return(struct ieee80211_local *local); 1897 void ieee80211_roc_setup(struct ieee80211_local *local); 1898 void ieee80211_start_next_roc(struct ieee80211_local *local); 1899 void ieee80211_roc_purge(struct ieee80211_local *local, 1900 struct ieee80211_sub_if_data *sdata); 1901 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1902 struct ieee80211_channel *chan, 1903 unsigned int duration, u64 *cookie); 1904 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1905 struct wireless_dev *wdev, u64 cookie); 1906 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1907 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1908 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1909 struct wireless_dev *wdev, u64 cookie); 1910 1911 /* channel switch handling */ 1912 void ieee80211_csa_finalize_work(struct work_struct *work); 1913 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1914 struct cfg80211_csa_settings *params); 1915 1916 /* color change handling */ 1917 void ieee80211_color_change_finalize_work(struct work_struct *work); 1918 1919 /* interface handling */ 1920 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1921 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1922 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1923 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1924 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1925 MAC80211_SUPPORTED_FEATURES_RX) 1926 1927 int ieee80211_iface_init(void); 1928 void ieee80211_iface_exit(void); 1929 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1930 unsigned char name_assign_type, 1931 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1932 struct vif_params *params); 1933 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1934 enum nl80211_iftype type); 1935 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1936 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1937 u32 ieee80211_idle_off(struct ieee80211_local *local); 1938 void ieee80211_recalc_idle(struct ieee80211_local *local); 1939 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1940 const int offset); 1941 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1942 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1943 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1944 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1945 1946 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1947 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1948 bool update_bss); 1949 void ieee80211_recalc_offload(struct ieee80211_local *local); 1950 1951 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1952 { 1953 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1954 } 1955 1956 /* link handling */ 1957 void ieee80211_link_setup(struct ieee80211_link_data *link); 1958 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, 1959 int link_id, 1960 struct ieee80211_link_data *link, 1961 struct ieee80211_bss_conf *link_conf); 1962 void ieee80211_link_stop(struct ieee80211_link_data *link); 1963 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 1964 u16 new_links); 1965 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata); 1966 1967 /* tx handling */ 1968 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1969 void ieee80211_tx_pending(struct tasklet_struct *t); 1970 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1971 struct net_device *dev); 1972 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1973 struct net_device *dev); 1974 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1975 struct net_device *dev); 1976 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1977 struct net_device *dev, 1978 u32 info_flags, 1979 u32 ctrl_flags, 1980 u64 *cookie); 1981 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1982 struct sk_buff_head *skbs); 1983 struct sk_buff * 1984 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1985 struct sk_buff *skb, u32 info_flags); 1986 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1987 int retry_count, int shift, bool send_to_cooked, 1988 struct ieee80211_tx_status *status); 1989 1990 void ieee80211_check_fast_xmit(struct sta_info *sta); 1991 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1992 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1993 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1994 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1995 const u8 *buf, size_t len, 1996 const u8 *dest, __be16 proto, bool unencrypted, 1997 int link_id, u64 *cookie); 1998 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1999 const u8 *buf, size_t len); 2000 2001 /* HT */ 2002 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2003 struct ieee80211_sta_ht_cap *ht_cap); 2004 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2005 struct ieee80211_supported_band *sband, 2006 const struct ieee80211_ht_cap *ht_cap_ie, 2007 struct link_sta_info *link_sta); 2008 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2009 const u8 *da, u16 tid, 2010 u16 initiator, u16 reason_code); 2011 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2012 enum ieee80211_smps_mode smps, const u8 *da, 2013 const u8 *bssid); 2014 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2015 enum ieee80211_smps_mode smps_mode_new); 2016 2017 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2018 u16 initiator, u16 reason, bool stop); 2019 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2020 u16 initiator, u16 reason, bool stop); 2021 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2022 u8 dialog_token, u16 timeout, 2023 u16 start_seq_num, u16 ba_policy, u16 tid, 2024 u16 buf_size, bool tx, bool auto_seq, 2025 const struct ieee80211_addba_ext_ie *addbaext); 2026 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2027 enum ieee80211_agg_stop_reason reason); 2028 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2029 struct sta_info *sta, 2030 struct ieee80211_mgmt *mgmt, size_t len); 2031 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2032 struct sta_info *sta, 2033 struct ieee80211_mgmt *mgmt, 2034 size_t len); 2035 void ieee80211_process_addba_request(struct ieee80211_local *local, 2036 struct sta_info *sta, 2037 struct ieee80211_mgmt *mgmt, 2038 size_t len); 2039 2040 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2041 enum ieee80211_agg_stop_reason reason); 2042 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2043 enum ieee80211_agg_stop_reason reason); 2044 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2045 struct tid_ampdu_tx *tid_tx); 2046 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2047 struct tid_ampdu_tx *tid_tx); 2048 void ieee80211_ba_session_work(struct work_struct *work); 2049 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2050 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2051 2052 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2053 enum nl80211_smps_mode 2054 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2055 2056 /* VHT */ 2057 void 2058 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2059 struct ieee80211_supported_band *sband, 2060 const struct ieee80211_vht_cap *vht_cap_ie, 2061 struct link_sta_info *link_sta); 2062 enum ieee80211_sta_rx_bandwidth 2063 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta); 2064 enum ieee80211_sta_rx_bandwidth 2065 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta); 2066 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta); 2067 enum ieee80211_sta_rx_bandwidth 2068 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2069 enum nl80211_chan_width 2070 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2071 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2072 struct ieee80211_link_data *link, 2073 struct ieee80211_mgmt *mgmt); 2074 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2075 struct link_sta_info *sta, 2076 u8 opmode, enum nl80211_band band); 2077 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2078 struct link_sta_info *sta, 2079 u8 opmode, enum nl80211_band band); 2080 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2081 struct ieee80211_sta_vht_cap *vht_cap); 2082 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2083 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2084 enum nl80211_chan_width 2085 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2086 2087 /* HE */ 2088 void 2089 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2090 struct ieee80211_supported_band *sband, 2091 const u8 *he_cap_ie, u8 he_cap_len, 2092 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2093 struct link_sta_info *link_sta); 2094 void 2095 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2096 const struct ieee80211_he_spr *he_spr_ie_elem); 2097 2098 void 2099 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2100 const struct ieee80211_he_operation *he_op_ie_elem); 2101 2102 /* S1G */ 2103 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2104 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2105 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2106 struct sk_buff *skb); 2107 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2108 struct sk_buff *skb); 2109 2110 /* Spectrum management */ 2111 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2112 struct ieee80211_mgmt *mgmt, 2113 size_t len); 2114 /** 2115 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2116 * @sdata: the sdata of the interface which has received the frame 2117 * @elems: parsed 802.11 elements received with the frame 2118 * @current_band: indicates the current band 2119 * @vht_cap_info: VHT capabilities of the transmitter 2120 * @conn_flags: contains information about own capabilities and restrictions 2121 * to decide which channel switch announcements can be accepted, using 2122 * flags from &enum ieee80211_conn_flags. 2123 * @bssid: the currently connected bssid (for reporting) 2124 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2125 All of them will be filled with if success only. 2126 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2127 */ 2128 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2129 struct ieee802_11_elems *elems, 2130 enum nl80211_band current_band, 2131 u32 vht_cap_info, 2132 ieee80211_conn_flags_t conn_flags, u8 *bssid, 2133 struct ieee80211_csa_ie *csa_ie); 2134 2135 /* Suspend/resume and hw reconfiguration */ 2136 int ieee80211_reconfig(struct ieee80211_local *local); 2137 void ieee80211_stop_device(struct ieee80211_local *local); 2138 2139 int __ieee80211_suspend(struct ieee80211_hw *hw, 2140 struct cfg80211_wowlan *wowlan); 2141 2142 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2143 { 2144 struct ieee80211_local *local = hw_to_local(hw); 2145 2146 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2147 !test_bit(SCAN_COMPLETED, &local->scanning), 2148 "%s: resume with hardware scan still in progress\n", 2149 wiphy_name(hw->wiphy)); 2150 2151 return ieee80211_reconfig(hw_to_local(hw)); 2152 } 2153 2154 /* utility functions/constants */ 2155 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2156 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2157 int rate, int erp, int short_preamble, 2158 int shift); 2159 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2160 struct ieee80211_tx_queue_params *qparam, 2161 int ac); 2162 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2163 bool bss_notify, bool enable_qos); 2164 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2165 struct sta_info *sta, struct sk_buff *skb); 2166 2167 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2168 struct sk_buff *skb, int tid, int link_id, 2169 enum nl80211_band band); 2170 2171 /* sta_out needs to be checked for ERR_PTR() before using */ 2172 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2173 struct sk_buff *skb, 2174 struct sta_info **sta_out); 2175 2176 static inline void 2177 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2178 struct sk_buff *skb, int tid, 2179 enum nl80211_band band) 2180 { 2181 rcu_read_lock(); 2182 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2183 rcu_read_unlock(); 2184 } 2185 2186 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2187 struct sk_buff *skb, int tid, int link_id); 2188 2189 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2190 struct sk_buff *skb) 2191 { 2192 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2193 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2194 } 2195 2196 /** 2197 * struct ieee80211_elems_parse_params - element parsing parameters 2198 * @start: pointer to the elements 2199 * @len: length of the elements 2200 * @action: %true if the elements came from an action frame 2201 * @filter: bitmap of element IDs to filter out while calculating 2202 * the element CRC 2203 * @crc: CRC starting value 2204 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2205 * represent a non-transmitting BSS in which case the data 2206 * for that non-transmitting BSS is returned 2207 * @link_id: the link ID to parse elements for, if a STA profile 2208 * is present in the multi-link element, or -1 to ignore 2209 * @from_ap: frame is received from an AP (currently used only 2210 * for EHT capabilities parsing) 2211 */ 2212 struct ieee80211_elems_parse_params { 2213 const u8 *start; 2214 size_t len; 2215 bool action; 2216 u64 filter; 2217 u32 crc; 2218 struct cfg80211_bss *bss; 2219 int link_id; 2220 bool from_ap; 2221 }; 2222 2223 struct ieee802_11_elems * 2224 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2225 2226 static inline struct ieee802_11_elems * 2227 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2228 u64 filter, u32 crc, 2229 struct cfg80211_bss *bss) 2230 { 2231 struct ieee80211_elems_parse_params params = { 2232 .start = start, 2233 .len = len, 2234 .action = action, 2235 .filter = filter, 2236 .crc = crc, 2237 .bss = bss, 2238 .link_id = -1, 2239 }; 2240 2241 return ieee802_11_parse_elems_full(¶ms); 2242 } 2243 2244 static inline struct ieee802_11_elems * 2245 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2246 struct cfg80211_bss *bss) 2247 { 2248 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2249 } 2250 2251 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos); 2252 2253 extern const int ieee802_1d_to_ac[8]; 2254 2255 static inline int ieee80211_ac_from_tid(int tid) 2256 { 2257 return ieee802_1d_to_ac[tid & 7]; 2258 } 2259 2260 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2261 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2262 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2263 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2264 struct ieee80211_sub_if_data *sdata, 2265 bool powersave); 2266 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2267 struct ieee80211_sub_if_data *sdata); 2268 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2269 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2270 2271 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2272 unsigned long queues, 2273 enum queue_stop_reason reason, 2274 bool refcounted); 2275 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2276 struct ieee80211_sub_if_data *sdata, 2277 enum queue_stop_reason reason); 2278 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2279 struct ieee80211_sub_if_data *sdata, 2280 enum queue_stop_reason reason); 2281 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2282 unsigned long queues, 2283 enum queue_stop_reason reason, 2284 bool refcounted); 2285 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2286 enum queue_stop_reason reason, 2287 bool refcounted); 2288 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2289 enum queue_stop_reason reason, 2290 bool refcounted); 2291 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2292 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2293 struct sk_buff *skb); 2294 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2295 struct sk_buff_head *skbs); 2296 void ieee80211_flush_queues(struct ieee80211_local *local, 2297 struct ieee80211_sub_if_data *sdata, bool drop); 2298 void __ieee80211_flush_queues(struct ieee80211_local *local, 2299 struct ieee80211_sub_if_data *sdata, 2300 unsigned int queues, bool drop); 2301 2302 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2303 { 2304 /* 2305 * It's unsafe to try to do any work during reconfigure flow. 2306 * When the flow ends the work will be requeued. 2307 */ 2308 if (local->in_reconfig) 2309 return false; 2310 2311 /* 2312 * If quiescing is set, we are racing with __ieee80211_suspend. 2313 * __ieee80211_suspend flushes the workers after setting quiescing, 2314 * and we check quiescing / suspended before enqueing new workers. 2315 * We should abort the worker to avoid the races below. 2316 */ 2317 if (local->quiescing) 2318 return false; 2319 2320 /* 2321 * We might already be suspended if the following scenario occurs: 2322 * __ieee80211_suspend Control path 2323 * 2324 * if (local->quiescing) 2325 * return; 2326 * local->quiescing = true; 2327 * flush_workqueue(); 2328 * queue_work(...); 2329 * local->suspended = true; 2330 * local->quiescing = false; 2331 * worker starts running... 2332 */ 2333 if (local->suspended) 2334 return false; 2335 2336 return true; 2337 } 2338 2339 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2340 void ieee80211_txq_set_params(struct ieee80211_local *local); 2341 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2342 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2343 struct sta_info *sta, 2344 struct txq_info *txq, int tid); 2345 void ieee80211_txq_purge(struct ieee80211_local *local, 2346 struct txq_info *txqi); 2347 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2348 struct ieee80211_sub_if_data *sdata); 2349 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2350 struct txq_info *txqi); 2351 void ieee80211_wake_txqs(struct tasklet_struct *t); 2352 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2353 u16 transaction, u16 auth_alg, u16 status, 2354 const u8 *extra, size_t extra_len, const u8 *bssid, 2355 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2356 u32 tx_flags); 2357 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2358 const u8 *da, const u8 *bssid, 2359 u16 stype, u16 reason, 2360 bool send_frame, u8 *frame_buf); 2361 2362 enum { 2363 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2364 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2365 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2366 }; 2367 2368 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2369 size_t buffer_len, 2370 struct ieee80211_scan_ies *ie_desc, 2371 const u8 *ie, size_t ie_len, 2372 u8 bands_used, u32 *rate_masks, 2373 struct cfg80211_chan_def *chandef, 2374 u32 flags); 2375 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2376 const u8 *src, const u8 *dst, 2377 u32 ratemask, 2378 struct ieee80211_channel *chan, 2379 const u8 *ssid, size_t ssid_len, 2380 const u8 *ie, size_t ie_len, 2381 u32 flags); 2382 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2383 struct ieee802_11_elems *elems, 2384 enum nl80211_band band, u32 *basic_rates); 2385 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2386 struct ieee80211_link_data *link, 2387 enum ieee80211_smps_mode smps_mode); 2388 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2389 struct ieee80211_link_data *link); 2390 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2391 int link_id); 2392 2393 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2394 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2395 u16 cap); 2396 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2397 const struct cfg80211_chan_def *chandef, 2398 u16 prot_mode, bool rifs_mode); 2399 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2400 const struct cfg80211_chan_def *chandef); 2401 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2402 u32 cap); 2403 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2404 const struct cfg80211_chan_def *chandef); 2405 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2406 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, 2407 const struct ieee80211_sta_he_cap *he_cap, 2408 u8 *end); 2409 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2410 enum ieee80211_smps_mode smps_mode, 2411 struct sk_buff *skb); 2412 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2413 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2414 const struct ieee80211_supported_band *sband, 2415 const u8 *srates, int srates_len, u32 *rates); 2416 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2417 struct sk_buff *skb, bool need_basic, 2418 enum nl80211_band band); 2419 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2420 struct sk_buff *skb, bool need_basic, 2421 enum nl80211_band band); 2422 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2423 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2424 struct ieee80211_sta_s1g_cap *caps, 2425 struct sk_buff *skb); 2426 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2427 struct sk_buff *skb); 2428 2429 /* channel management */ 2430 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2431 struct cfg80211_chan_def *chandef); 2432 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2433 const struct ieee80211_vht_operation *oper, 2434 const struct ieee80211_ht_operation *htop, 2435 struct cfg80211_chan_def *chandef); 2436 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper, 2437 bool support_160, bool support_320, 2438 struct cfg80211_chan_def *chandef); 2439 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2440 const struct ieee80211_he_operation *he_oper, 2441 const struct ieee80211_eht_operation *eht_oper, 2442 struct cfg80211_chan_def *chandef); 2443 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2444 struct cfg80211_chan_def *chandef); 2445 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2446 2447 int __must_check 2448 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2449 const struct cfg80211_chan_def *chandef, 2450 enum ieee80211_chanctx_mode mode); 2451 int __must_check 2452 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2453 const struct cfg80211_chan_def *chandef, 2454 enum ieee80211_chanctx_mode mode, 2455 bool radar_required); 2456 int __must_check 2457 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2458 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2459 2460 int __must_check 2461 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, 2462 const struct cfg80211_chan_def *chandef, 2463 u32 *changed); 2464 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2465 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2466 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2467 bool clear); 2468 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2469 struct ieee80211_chanctx *ctx); 2470 2471 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2472 struct ieee80211_chanctx *chanctx); 2473 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2474 struct ieee80211_chanctx *ctx); 2475 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2476 2477 void ieee80211_dfs_cac_timer(unsigned long data); 2478 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2479 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2480 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2481 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2482 struct cfg80211_csa_settings *csa_settings); 2483 2484 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2485 struct ieee80211_sub_if_data *sdata); 2486 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2487 const struct cfg80211_chan_def *chandef, 2488 enum ieee80211_chanctx_mode chanmode, 2489 u8 radar_detect); 2490 int ieee80211_max_num_channels(struct ieee80211_local *local); 2491 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2492 struct ieee80211_chanctx *ctx); 2493 2494 /* TDLS */ 2495 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2496 const u8 *peer, u8 action_code, u8 dialog_token, 2497 u16 status_code, u32 peer_capability, 2498 bool initiator, const u8 *extra_ies, 2499 size_t extra_ies_len); 2500 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2501 const u8 *peer, enum nl80211_tdls_operation oper); 2502 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2503 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2504 const u8 *addr, u8 oper_class, 2505 struct cfg80211_chan_def *chandef); 2506 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2507 struct net_device *dev, 2508 const u8 *addr); 2509 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2510 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2511 const u8 *peer, u16 reason); 2512 void 2513 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2514 struct sk_buff *skb); 2515 2516 2517 const char *ieee80211_get_reason_code_string(u16 reason_code); 2518 u16 ieee80211_encode_usf(int val); 2519 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2520 enum nl80211_iftype type); 2521 2522 extern const struct ethtool_ops ieee80211_ethtool_ops; 2523 2524 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2525 struct ieee80211_vif *vif, 2526 struct ieee80211_sta *pubsta, 2527 int len, bool ampdu); 2528 #ifdef CONFIG_MAC80211_NOINLINE 2529 #define debug_noinline noinline 2530 #else 2531 #define debug_noinline 2532 #endif 2533 2534 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2535 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2536 2537 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2538 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2539 const struct ieee80211_sta_he_cap *he_cap, 2540 const struct ieee80211_sta_eht_cap *eht_cap, 2541 u8 *end, 2542 bool for_ap); 2543 2544 void 2545 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2546 struct ieee80211_supported_band *sband, 2547 const u8 *he_cap_ie, u8 he_cap_len, 2548 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2549 u8 eht_cap_len, 2550 struct link_sta_info *link_sta); 2551 #endif /* IEEE80211_I_H */ 2552