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