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 ieee80211_key *key; 217 218 unsigned int flags; 219 220 /* 221 * Index into sequence numbers array, 0..16 222 * since the last (16) is used for non-QoS, 223 * will be 16 on non-QoS frames. 224 */ 225 int seqno_idx; 226 227 /* 228 * Index into the security IV/PN arrays, 0..16 229 * since the last (16) is used for CCMP-encrypted 230 * management frames, will be set to 16 on mgmt 231 * frames and 0 on non-QoS frames. 232 */ 233 int security_idx; 234 235 int link_id; 236 237 union { 238 struct { 239 u32 iv32; 240 u16 iv16; 241 } tkip; 242 struct { 243 u8 pn[IEEE80211_CCMP_PN_LEN]; 244 } ccm_gcm; 245 }; 246 }; 247 248 struct ieee80211_csa_settings { 249 const u16 *counter_offsets_beacon; 250 const u16 *counter_offsets_presp; 251 252 int n_counter_offsets_beacon; 253 int n_counter_offsets_presp; 254 255 u8 count; 256 }; 257 258 struct ieee80211_color_change_settings { 259 u16 counter_offset_beacon; 260 u16 counter_offset_presp; 261 u8 count; 262 }; 263 264 struct beacon_data { 265 u8 *head, *tail; 266 int head_len, tail_len; 267 struct ieee80211_meshconf_ie *meshconf; 268 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 269 u8 cntdwn_current_counter; 270 struct cfg80211_mbssid_elems *mbssid_ies; 271 struct rcu_head rcu_head; 272 }; 273 274 struct probe_resp { 275 struct rcu_head rcu_head; 276 int len; 277 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 278 u8 data[]; 279 }; 280 281 struct fils_discovery_data { 282 struct rcu_head rcu_head; 283 int len; 284 u8 data[]; 285 }; 286 287 struct unsol_bcast_probe_resp_data { 288 struct rcu_head rcu_head; 289 int len; 290 u8 data[]; 291 }; 292 293 struct ps_data { 294 /* yes, this looks ugly, but guarantees that we can later use 295 * bitmap_empty :) 296 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 297 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 298 __aligned(__alignof__(unsigned long)); 299 struct sk_buff_head bc_buf; 300 atomic_t num_sta_ps; /* number of stations in PS mode */ 301 int dtim_count; 302 bool dtim_bc_mc; 303 }; 304 305 struct ieee80211_if_ap { 306 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 307 308 struct ps_data ps; 309 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 310 311 bool multicast_to_unicast; 312 bool active; 313 }; 314 315 struct ieee80211_if_vlan { 316 struct list_head list; /* write-protected with RTNL and local->mtx */ 317 318 /* used for all tx if the VLAN is configured to 4-addr mode */ 319 struct sta_info __rcu *sta; 320 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 321 }; 322 323 struct mesh_stats { 324 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 325 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 326 __u32 fwded_frames; /* Mesh total forwarded frames */ 327 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 328 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 329 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 330 }; 331 332 #define PREQ_Q_F_START 0x1 333 #define PREQ_Q_F_REFRESH 0x2 334 struct mesh_preq_queue { 335 struct list_head list; 336 u8 dst[ETH_ALEN]; 337 u8 flags; 338 }; 339 340 struct ieee80211_roc_work { 341 struct list_head list; 342 343 struct ieee80211_sub_if_data *sdata; 344 345 struct ieee80211_channel *chan; 346 347 bool started, abort, hw_begun, notified; 348 bool on_channel; 349 350 unsigned long start_time; 351 352 u32 duration, req_duration; 353 struct sk_buff *frame; 354 u64 cookie, mgmt_tx_cookie; 355 enum ieee80211_roc_type type; 356 }; 357 358 /* flags used in struct ieee80211_if_managed.flags */ 359 enum ieee80211_sta_flags { 360 IEEE80211_STA_CONNECTION_POLL = BIT(1), 361 IEEE80211_STA_CONTROL_PORT = BIT(2), 362 IEEE80211_STA_MFP_ENABLED = BIT(6), 363 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 364 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 365 IEEE80211_STA_ENABLE_RRM = BIT(15), 366 }; 367 368 typedef u32 __bitwise ieee80211_conn_flags_t; 369 370 enum ieee80211_conn_flags { 371 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0), 372 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1), 373 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2), 374 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3), 375 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4), 376 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5), 377 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6), 378 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7), 379 }; 380 381 struct ieee80211_mgd_auth_data { 382 struct cfg80211_bss *bss; 383 unsigned long timeout; 384 int tries; 385 u16 algorithm, expected_transaction; 386 387 u8 key[WLAN_KEY_LEN_WEP104]; 388 u8 key_len, key_idx; 389 bool done, waiting; 390 bool peer_confirmed; 391 bool timeout_started; 392 393 u8 ap_addr[ETH_ALEN] __aligned(2); 394 395 u16 sae_trans, sae_status; 396 size_t data_len; 397 u8 data[]; 398 }; 399 400 struct ieee80211_mgd_assoc_data { 401 struct { 402 struct cfg80211_bss *bss; 403 404 u8 addr[ETH_ALEN] __aligned(2); 405 406 u8 ap_ht_param; 407 408 struct ieee80211_vht_cap ap_vht_cap; 409 410 size_t elems_len; 411 u8 *elems; /* pointing to inside ie[] below */ 412 413 ieee80211_conn_flags_t conn_flags; 414 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 415 416 u8 ap_addr[ETH_ALEN] __aligned(2); 417 418 /* this is for a workaround, so we use it only for non-MLO */ 419 const u8 *supp_rates; 420 u8 supp_rates_len; 421 422 unsigned long timeout; 423 int tries; 424 425 u8 prev_ap_addr[ETH_ALEN]; 426 u8 ssid[IEEE80211_MAX_SSID_LEN]; 427 u8 ssid_len; 428 bool wmm, uapsd; 429 bool need_beacon; 430 bool synced; 431 bool timeout_started; 432 bool s1g; 433 434 unsigned int assoc_link_id; 435 436 u8 fils_nonces[2 * FILS_NONCE_LEN]; 437 u8 fils_kek[FILS_MAX_KEK_LEN]; 438 size_t fils_kek_len; 439 440 size_t ie_len; 441 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 442 u8 ie[]; 443 }; 444 445 struct ieee80211_sta_tx_tspec { 446 /* timestamp of the first packet in the time slice */ 447 unsigned long time_slice_start; 448 449 u32 admitted_time; /* in usecs, unlike over the air */ 450 u8 tsid; 451 s8 up; /* signed to be able to invalidate with -1 during teardown */ 452 453 /* consumed TX time in microseconds in the time slice */ 454 u32 consumed_tx_time; 455 enum { 456 TX_TSPEC_ACTION_NONE = 0, 457 TX_TSPEC_ACTION_DOWNGRADE, 458 TX_TSPEC_ACTION_STOP_DOWNGRADE, 459 } action; 460 bool downgraded; 461 }; 462 463 DECLARE_EWMA(beacon_signal, 4, 4) 464 465 struct ieee80211_if_managed { 466 struct timer_list timer; 467 struct timer_list conn_mon_timer; 468 struct timer_list bcn_mon_timer; 469 struct work_struct monitor_work; 470 struct work_struct beacon_connection_loss_work; 471 struct work_struct csa_connection_drop_work; 472 473 unsigned long beacon_timeout; 474 unsigned long probe_timeout; 475 int probe_send_count; 476 bool nullfunc_failed; 477 u8 connection_loss:1, 478 driver_disconnect:1, 479 reconnect:1, 480 associated:1; 481 482 struct ieee80211_mgd_auth_data *auth_data; 483 struct ieee80211_mgd_assoc_data *assoc_data; 484 485 bool powersave; /* powersave requested for this iface */ 486 bool broken_ap; /* AP is broken -- turn off powersave */ 487 488 unsigned int flags; 489 490 bool status_acked; 491 bool status_received; 492 __le16 status_fc; 493 494 enum { 495 IEEE80211_MFP_DISABLED, 496 IEEE80211_MFP_OPTIONAL, 497 IEEE80211_MFP_REQUIRED 498 } mfp; /* management frame protection */ 499 500 /* 501 * Bitmask of enabled u-apsd queues, 502 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 503 * to take effect. 504 */ 505 unsigned int uapsd_queues; 506 507 /* 508 * Maximum number of buffered frames AP can deliver during a 509 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 510 * Needs a new association to take effect. 511 */ 512 unsigned int uapsd_max_sp_len; 513 514 u8 use_4addr; 515 516 /* 517 * State variables for keeping track of RSSI of the AP currently 518 * connected to and informing driver when RSSI has gone 519 * below/above a certain threshold. 520 */ 521 int rssi_min_thold, rssi_max_thold; 522 523 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 524 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 525 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 526 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 527 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 528 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 529 530 /* TDLS support */ 531 u8 tdls_peer[ETH_ALEN] __aligned(2); 532 struct delayed_work tdls_peer_del_work; 533 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 534 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 535 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 536 bool tdls_wider_bw_prohibited; 537 538 /* WMM-AC TSPEC support */ 539 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 540 /* Use a separate work struct so that we can do something here 541 * while the sdata->work is flushing the queues, for example. 542 * otherwise, in scenarios where we hardly get any traffic out 543 * on the BE queue, but there's a lot of VO traffic, we might 544 * get stuck in a downgraded situation and flush takes forever. 545 */ 546 struct delayed_work tx_tspec_wk; 547 548 /* Information elements from the last transmitted (Re)Association 549 * Request frame. 550 */ 551 u8 *assoc_req_ies; 552 size_t assoc_req_ies_len; 553 }; 554 555 struct ieee80211_if_ibss { 556 struct timer_list timer; 557 struct work_struct csa_connection_drop_work; 558 559 unsigned long last_scan_completed; 560 561 u32 basic_rates; 562 563 bool fixed_bssid; 564 bool fixed_channel; 565 bool privacy; 566 567 bool control_port; 568 bool userspace_handles_dfs; 569 570 u8 bssid[ETH_ALEN] __aligned(2); 571 u8 ssid[IEEE80211_MAX_SSID_LEN]; 572 u8 ssid_len, ie_len; 573 u8 *ie; 574 struct cfg80211_chan_def chandef; 575 576 unsigned long ibss_join_req; 577 /* probe response/beacon for IBSS */ 578 struct beacon_data __rcu *presp; 579 580 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 581 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 582 583 spinlock_t incomplete_lock; 584 struct list_head incomplete_stations; 585 586 enum { 587 IEEE80211_IBSS_MLME_SEARCH, 588 IEEE80211_IBSS_MLME_JOINED, 589 } state; 590 }; 591 592 /** 593 * struct ieee80211_if_ocb - OCB mode state 594 * 595 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 596 * @wrkq_flags: OCB deferred task action 597 * @incomplete_lock: delayed STA insertion lock 598 * @incomplete_stations: list of STAs waiting for delayed insertion 599 * @joined: indication if the interface is connected to an OCB network 600 */ 601 struct ieee80211_if_ocb { 602 struct timer_list housekeeping_timer; 603 unsigned long wrkq_flags; 604 605 spinlock_t incomplete_lock; 606 struct list_head incomplete_stations; 607 608 bool joined; 609 }; 610 611 /** 612 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 613 * 614 * these declarations define the interface, which enables 615 * vendor-specific mesh synchronization 616 * 617 */ 618 struct ieee802_11_elems; 619 struct ieee80211_mesh_sync_ops { 620 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 621 struct ieee80211_mgmt *mgmt, unsigned int len, 622 const struct ieee80211_meshconf_ie *mesh_cfg, 623 struct ieee80211_rx_status *rx_status); 624 625 /* should be called with beacon_data under RCU read lock */ 626 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 627 struct beacon_data *beacon); 628 /* add other framework functions here */ 629 }; 630 631 struct mesh_csa_settings { 632 struct rcu_head rcu_head; 633 struct cfg80211_csa_settings settings; 634 }; 635 636 /** 637 * struct mesh_table 638 * 639 * @known_gates: list of known mesh gates and their mpaths by the station. The 640 * gate's mpath may or may not be resolved and active. 641 * @gates_lock: protects updates to known_gates 642 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 643 * @walk_head: linked list containing all mesh_path objects 644 * @walk_lock: lock protecting walk_head 645 * @entries: number of entries in the table 646 */ 647 struct mesh_table { 648 struct hlist_head known_gates; 649 spinlock_t gates_lock; 650 struct rhashtable rhead; 651 struct hlist_head walk_head; 652 spinlock_t walk_lock; 653 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 654 }; 655 656 struct ieee80211_if_mesh { 657 struct timer_list housekeeping_timer; 658 struct timer_list mesh_path_timer; 659 struct timer_list mesh_path_root_timer; 660 661 unsigned long wrkq_flags; 662 unsigned long mbss_changed; 663 664 bool userspace_handles_dfs; 665 666 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 667 size_t mesh_id_len; 668 /* Active Path Selection Protocol Identifier */ 669 u8 mesh_pp_id; 670 /* Active Path Selection Metric Identifier */ 671 u8 mesh_pm_id; 672 /* Congestion Control Mode Identifier */ 673 u8 mesh_cc_id; 674 /* Synchronization Protocol Identifier */ 675 u8 mesh_sp_id; 676 /* Authentication Protocol Identifier */ 677 u8 mesh_auth_id; 678 /* Local mesh Sequence Number */ 679 u32 sn; 680 /* Last used PREQ ID */ 681 u32 preq_id; 682 atomic_t mpaths; 683 /* Timestamp of last SN update */ 684 unsigned long last_sn_update; 685 /* Time when it's ok to send next PERR */ 686 unsigned long next_perr; 687 /* Timestamp of last PREQ sent */ 688 unsigned long last_preq; 689 struct mesh_rmc *rmc; 690 spinlock_t mesh_preq_queue_lock; 691 struct mesh_preq_queue preq_queue; 692 int preq_queue_len; 693 struct mesh_stats mshstats; 694 struct mesh_config mshcfg; 695 atomic_t estab_plinks; 696 u32 mesh_seqnum; 697 bool accepting_plinks; 698 int num_gates; 699 struct beacon_data __rcu *beacon; 700 const u8 *ie; 701 u8 ie_len; 702 enum { 703 IEEE80211_MESH_SEC_NONE = 0x0, 704 IEEE80211_MESH_SEC_AUTHED = 0x1, 705 IEEE80211_MESH_SEC_SECURED = 0x2, 706 } security; 707 bool user_mpm; 708 /* Extensible Synchronization Framework */ 709 const struct ieee80211_mesh_sync_ops *sync_ops; 710 s64 sync_offset_clockdrift_max; 711 spinlock_t sync_offset_lock; 712 /* mesh power save */ 713 enum nl80211_mesh_power_mode nonpeer_pm; 714 int ps_peers_light_sleep; 715 int ps_peers_deep_sleep; 716 struct ps_data ps; 717 /* Channel Switching Support */ 718 struct mesh_csa_settings __rcu *csa; 719 enum { 720 IEEE80211_MESH_CSA_ROLE_NONE, 721 IEEE80211_MESH_CSA_ROLE_INIT, 722 IEEE80211_MESH_CSA_ROLE_REPEATER, 723 } csa_role; 724 u8 chsw_ttl; 725 u16 pre_value; 726 727 /* offset from skb->data while building IE */ 728 int meshconf_offset; 729 730 struct mesh_table mesh_paths; 731 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 732 int mesh_paths_generation; 733 int mpp_paths_generation; 734 }; 735 736 #ifdef CONFIG_MAC80211_MESH 737 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 738 do { (msh)->mshstats.name++; } while (0) 739 #else 740 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 741 do { } while (0) 742 #endif 743 744 /** 745 * enum ieee80211_sub_if_data_flags - virtual interface flags 746 * 747 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 748 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 749 * associated stations and deliver multicast frames both 750 * back to wireless media and to the local net stack. 751 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 752 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 753 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 754 * recovery 755 */ 756 enum ieee80211_sub_if_data_flags { 757 IEEE80211_SDATA_ALLMULTI = BIT(0), 758 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 759 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 760 IEEE80211_SDATA_IN_DRIVER = BIT(5), 761 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 762 }; 763 764 /** 765 * enum ieee80211_sdata_state_bits - virtual interface state bits 766 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 767 * mirrors netif_running() but is separate for interface type 768 * change handling while the interface is up 769 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 770 * mode, so queues are stopped 771 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 772 * to offchannel, reset when offchannel returns 773 */ 774 enum ieee80211_sdata_state_bits { 775 SDATA_STATE_RUNNING, 776 SDATA_STATE_OFFCHANNEL, 777 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 778 }; 779 780 /** 781 * enum ieee80211_chanctx_mode - channel context configuration mode 782 * 783 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 784 * multiple interfaces 785 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 786 * only by a single interface. This can be used for example for 787 * non-fixed channel IBSS. 788 */ 789 enum ieee80211_chanctx_mode { 790 IEEE80211_CHANCTX_SHARED, 791 IEEE80211_CHANCTX_EXCLUSIVE 792 }; 793 794 /** 795 * enum ieee80211_chanctx_replace_state - channel context replacement state 796 * 797 * This is used for channel context in-place reservations that require channel 798 * context switch/swap. 799 * 800 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 801 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 802 * by a (not yet registered) channel context pointed by %replace_ctx. 803 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 804 * replaces an existing channel context pointed to by %replace_ctx. 805 */ 806 enum ieee80211_chanctx_replace_state { 807 IEEE80211_CHANCTX_REPLACE_NONE, 808 IEEE80211_CHANCTX_WILL_BE_REPLACED, 809 IEEE80211_CHANCTX_REPLACES_OTHER, 810 }; 811 812 struct ieee80211_chanctx { 813 struct list_head list; 814 struct rcu_head rcu_head; 815 816 struct list_head assigned_links; 817 struct list_head reserved_links; 818 819 enum ieee80211_chanctx_replace_state replace_state; 820 struct ieee80211_chanctx *replace_ctx; 821 822 enum ieee80211_chanctx_mode mode; 823 bool driver_present; 824 825 struct ieee80211_chanctx_conf conf; 826 }; 827 828 struct mac80211_qos_map { 829 struct cfg80211_qos_map qos_map; 830 struct rcu_head rcu_head; 831 }; 832 833 enum txq_info_flags { 834 IEEE80211_TXQ_STOP, 835 IEEE80211_TXQ_AMPDU, 836 IEEE80211_TXQ_NO_AMSDU, 837 IEEE80211_TXQ_STOP_NETIF_TX, 838 }; 839 840 /** 841 * struct txq_info - per tid queue 842 * 843 * @tin: contains packets split into multiple flows 844 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 845 * a fq_flow which is already owned by a different tin 846 * @def_cvars: codel vars for @def_flow 847 * @frags: used to keep fragments created after dequeue 848 * @schedule_order: used with ieee80211_local->active_txqs 849 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 850 */ 851 struct txq_info { 852 struct fq_tin tin; 853 struct codel_vars def_cvars; 854 struct codel_stats cstats; 855 856 u16 schedule_round; 857 struct list_head schedule_order; 858 859 struct sk_buff_head frags; 860 861 unsigned long flags; 862 863 /* keep last! */ 864 struct ieee80211_txq txq; 865 }; 866 867 struct ieee80211_if_mntr { 868 u32 flags; 869 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 870 871 struct list_head list; 872 }; 873 874 /** 875 * struct ieee80211_if_nan - NAN state 876 * 877 * @conf: current NAN configuration 878 * @func_ids: a bitmap of available instance_id's 879 */ 880 struct ieee80211_if_nan { 881 struct cfg80211_nan_conf conf; 882 883 /* protects function_inst_ids */ 884 spinlock_t func_lock; 885 struct idr function_inst_ids; 886 }; 887 888 struct ieee80211_link_data_managed { 889 u8 bssid[ETH_ALEN] __aligned(2); 890 891 u8 dtim_period; 892 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 893 driver_smps_mode; /* smps mode request */ 894 895 ieee80211_conn_flags_t conn_flags; 896 897 s16 p2p_noa_index; 898 899 bool tdls_chan_switch_prohibited; 900 901 bool have_beacon; 902 bool tracking_signal_avg; 903 bool disable_wmm_tracking; 904 bool operating_11g_mode; 905 906 bool csa_waiting_bcn; 907 bool csa_ignored_same_chan; 908 struct timer_list chswitch_timer; 909 struct work_struct chswitch_work; 910 911 struct work_struct request_smps_work; 912 bool beacon_crc_valid; 913 u32 beacon_crc; 914 struct ewma_beacon_signal ave_beacon_signal; 915 int last_ave_beacon_signal; 916 917 /* 918 * Number of Beacon frames used in ave_beacon_signal. This can be used 919 * to avoid generating less reliable cqm events that would be based 920 * only on couple of received frames. 921 */ 922 unsigned int count_beacon_signal; 923 924 /* Number of times beacon loss was invoked. */ 925 unsigned int beacon_loss_count; 926 927 /* 928 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 929 * that triggered a cqm event. 0 indicates that no event has been 930 * generated for the current association. 931 */ 932 int last_cqm_event_signal; 933 934 int wmm_last_param_set; 935 int mu_edca_last_param_set; 936 937 struct cfg80211_bss *bss; 938 }; 939 940 struct ieee80211_link_data_ap { 941 struct beacon_data __rcu *beacon; 942 struct probe_resp __rcu *probe_resp; 943 struct fils_discovery_data __rcu *fils_discovery; 944 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 945 946 /* to be used after channel switch. */ 947 struct cfg80211_beacon_data *next_beacon; 948 }; 949 950 struct ieee80211_link_data { 951 struct ieee80211_sub_if_data *sdata; 952 unsigned int link_id; 953 954 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 955 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 956 957 /* multicast keys only */ 958 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 959 NUM_DEFAULT_MGMT_KEYS + 960 NUM_DEFAULT_BEACON_KEYS]; 961 struct ieee80211_key __rcu *default_multicast_key; 962 struct ieee80211_key __rcu *default_mgmt_key; 963 struct ieee80211_key __rcu *default_beacon_key; 964 965 struct work_struct csa_finalize_work; 966 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 967 968 bool operating_11g_mode; 969 970 struct cfg80211_chan_def csa_chandef; 971 972 struct work_struct color_change_finalize_work; 973 974 /* context reservation -- protected with chanctx_mtx */ 975 struct ieee80211_chanctx *reserved_chanctx; 976 struct cfg80211_chan_def reserved_chandef; 977 bool reserved_radar_required; 978 bool reserved_ready; 979 980 u8 needed_rx_chains; 981 enum ieee80211_smps_mode smps_mode; 982 983 int user_power_level; /* in dBm */ 984 int ap_power_level; /* in dBm */ 985 986 bool radar_required; 987 struct delayed_work dfs_cac_timer_work; 988 989 union { 990 struct ieee80211_link_data_managed mgd; 991 struct ieee80211_link_data_ap ap; 992 } u; 993 994 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 995 996 struct ieee80211_bss_conf *conf; 997 }; 998 999 struct ieee80211_sub_if_data { 1000 struct list_head list; 1001 1002 struct wireless_dev wdev; 1003 1004 /* keys */ 1005 struct list_head key_list; 1006 1007 /* count for keys needing tailroom space allocation */ 1008 int crypto_tx_tailroom_needed_cnt; 1009 int crypto_tx_tailroom_pending_dec; 1010 struct delayed_work dec_tailroom_needed_wk; 1011 1012 struct net_device *dev; 1013 struct ieee80211_local *local; 1014 1015 unsigned int flags; 1016 1017 unsigned long state; 1018 1019 char name[IFNAMSIZ]; 1020 1021 struct ieee80211_fragment_cache frags; 1022 1023 /* TID bitmap for NoAck policy */ 1024 u16 noack_map; 1025 1026 /* bit field of ACM bits (BIT(802.1D tag)) */ 1027 u8 wmm_acm; 1028 1029 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1030 struct ieee80211_key __rcu *default_unicast_key; 1031 1032 u16 sequence_number; 1033 u16 mld_mcast_seq; 1034 __be16 control_port_protocol; 1035 bool control_port_no_encrypt; 1036 bool control_port_no_preauth; 1037 bool control_port_over_nl80211; 1038 1039 atomic_t num_tx_queued; 1040 struct mac80211_qos_map __rcu *qos_map; 1041 1042 /* used to reconfigure hardware SM PS */ 1043 struct work_struct recalc_smps; 1044 1045 struct work_struct work; 1046 struct sk_buff_head skb_queue; 1047 struct sk_buff_head status_queue; 1048 1049 /* 1050 * AP this belongs to: self in AP mode and 1051 * corresponding AP in VLAN mode, NULL for 1052 * all others (might be needed later in IBSS) 1053 */ 1054 struct ieee80211_if_ap *bss; 1055 1056 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1057 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1058 1059 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1060 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1061 1062 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1063 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1064 1065 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1066 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1067 bool beacon_rate_set; 1068 1069 union { 1070 struct ieee80211_if_ap ap; 1071 struct ieee80211_if_vlan vlan; 1072 struct ieee80211_if_managed mgd; 1073 struct ieee80211_if_ibss ibss; 1074 struct ieee80211_if_mesh mesh; 1075 struct ieee80211_if_ocb ocb; 1076 struct ieee80211_if_mntr mntr; 1077 struct ieee80211_if_nan nan; 1078 } u; 1079 1080 struct ieee80211_link_data deflink; 1081 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1082 1083 #ifdef CONFIG_MAC80211_DEBUGFS 1084 struct { 1085 struct dentry *subdir_stations; 1086 struct dentry *default_unicast_key; 1087 struct dentry *default_multicast_key; 1088 struct dentry *default_mgmt_key; 1089 struct dentry *default_beacon_key; 1090 } debugfs; 1091 #endif 1092 1093 /* must be last, dynamically sized area in this! */ 1094 struct ieee80211_vif vif; 1095 }; 1096 1097 static inline 1098 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1099 { 1100 return container_of(p, struct ieee80211_sub_if_data, vif); 1101 } 1102 1103 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1104 __acquires(&sdata->wdev.mtx) 1105 { 1106 mutex_lock(&sdata->wdev.mtx); 1107 __acquire(&sdata->wdev.mtx); 1108 } 1109 1110 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1111 __releases(&sdata->wdev.mtx) 1112 { 1113 mutex_unlock(&sdata->wdev.mtx); 1114 __release(&sdata->wdev.mtx); 1115 } 1116 1117 #define sdata_dereference(p, sdata) \ 1118 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1119 1120 static inline void 1121 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1122 { 1123 lockdep_assert_held(&sdata->wdev.mtx); 1124 } 1125 1126 static inline int 1127 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width) 1128 { 1129 switch (width) { 1130 case NL80211_CHAN_WIDTH_5: 1131 return 2; 1132 case NL80211_CHAN_WIDTH_10: 1133 return 1; 1134 default: 1135 return 0; 1136 } 1137 } 1138 1139 static inline int 1140 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1141 { 1142 return ieee80211_chanwidth_get_shift(chandef->width); 1143 } 1144 1145 static inline int 1146 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1147 { 1148 struct ieee80211_chanctx_conf *chanctx_conf; 1149 int shift = 0; 1150 1151 rcu_read_lock(); 1152 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 1153 if (chanctx_conf) 1154 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1155 rcu_read_unlock(); 1156 1157 return shift; 1158 } 1159 1160 static inline int 1161 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems) 1162 { 1163 int i, len = 0; 1164 1165 if (!elems) 1166 return 0; 1167 1168 for (i = 0; i < elems->cnt; i++) 1169 len += elems->elem[i].len; 1170 1171 return len; 1172 } 1173 1174 enum { 1175 IEEE80211_RX_MSG = 1, 1176 IEEE80211_TX_STATUS_MSG = 2, 1177 }; 1178 1179 enum queue_stop_reason { 1180 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1181 IEEE80211_QUEUE_STOP_REASON_PS, 1182 IEEE80211_QUEUE_STOP_REASON_CSA, 1183 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1184 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1185 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1186 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1187 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1188 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1189 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1190 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1191 1192 IEEE80211_QUEUE_STOP_REASONS, 1193 }; 1194 1195 #ifdef CONFIG_MAC80211_LEDS 1196 struct tpt_led_trigger { 1197 char name[32]; 1198 const struct ieee80211_tpt_blink *blink_table; 1199 unsigned int blink_table_len; 1200 struct timer_list timer; 1201 struct ieee80211_local *local; 1202 unsigned long prev_traffic; 1203 unsigned long tx_bytes, rx_bytes; 1204 unsigned int active, want; 1205 bool running; 1206 }; 1207 #endif 1208 1209 /** 1210 * mac80211 scan flags - currently active scan mode 1211 * 1212 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1213 * well be on the operating channel 1214 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1215 * determine if we are on the operating channel or not 1216 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1217 * channel. This should not interrupt normal traffic. 1218 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1219 * that the scan completed. 1220 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1221 * a scan complete for an aborted scan. 1222 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1223 * cancelled. 1224 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1225 * and could send a probe request after receiving a beacon. 1226 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1227 */ 1228 enum { 1229 SCAN_SW_SCANNING, 1230 SCAN_HW_SCANNING, 1231 SCAN_ONCHANNEL_SCANNING, 1232 SCAN_COMPLETED, 1233 SCAN_ABORTED, 1234 SCAN_HW_CANCELLED, 1235 SCAN_BEACON_WAIT, 1236 SCAN_BEACON_DONE, 1237 }; 1238 1239 /** 1240 * enum mac80211_scan_state - scan state machine states 1241 * 1242 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1243 * determines if we should keep on scanning or switch back to the 1244 * operating channel 1245 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1246 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1247 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1248 * send out data 1249 * @SCAN_RESUME: Resume the scan and scan the next channel 1250 * @SCAN_ABORT: Abort the scan and go back to operating channel 1251 */ 1252 enum mac80211_scan_state { 1253 SCAN_DECISION, 1254 SCAN_SET_CHANNEL, 1255 SCAN_SEND_PROBE, 1256 SCAN_SUSPEND, 1257 SCAN_RESUME, 1258 SCAN_ABORT, 1259 }; 1260 1261 DECLARE_STATIC_KEY_FALSE(aql_disable); 1262 1263 struct ieee80211_local { 1264 /* embed the driver visible part. 1265 * don't cast (use the static inlines below), but we keep 1266 * it first anyway so they become a no-op */ 1267 struct ieee80211_hw hw; 1268 1269 struct fq fq; 1270 struct codel_vars *cvars; 1271 struct codel_params cparams; 1272 1273 /* protects active_txqs and txqi->schedule_order */ 1274 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1275 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1276 u16 schedule_round[IEEE80211_NUM_ACS]; 1277 1278 u16 airtime_flags; 1279 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1280 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1281 u32 aql_threshold; 1282 atomic_t aql_total_pending_airtime; 1283 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1284 1285 const struct ieee80211_ops *ops; 1286 1287 /* 1288 * private workqueue to mac80211. mac80211 makes this accessible 1289 * via ieee80211_queue_work() 1290 */ 1291 struct workqueue_struct *workqueue; 1292 1293 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1294 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1295 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1296 spinlock_t queue_stop_reason_lock; 1297 1298 int open_count; 1299 int monitors, cooked_mntrs; 1300 /* number of interfaces with corresponding FIF_ flags */ 1301 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1302 fif_probe_req; 1303 bool probe_req_reg; 1304 bool rx_mcast_action_reg; 1305 unsigned int filter_flags; /* FIF_* */ 1306 1307 bool wiphy_ciphers_allocated; 1308 1309 bool use_chanctx; 1310 1311 /* protects the aggregated multicast list and filter calls */ 1312 spinlock_t filter_lock; 1313 1314 /* used for uploading changed mc list */ 1315 struct work_struct reconfig_filter; 1316 1317 /* aggregated multicast list */ 1318 struct netdev_hw_addr_list mc_list; 1319 1320 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1321 1322 /* 1323 * suspended is true if we finished all the suspend _and_ we have 1324 * not yet come up from resume. This is to be used by mac80211 1325 * to ensure driver sanity during suspend and mac80211's own 1326 * sanity. It can eventually be used for WoW as well. 1327 */ 1328 bool suspended; 1329 1330 /* suspending is true during the whole suspend process */ 1331 bool suspending; 1332 1333 /* 1334 * Resuming is true while suspended, but when we're reprogramming the 1335 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1336 * again even though some other parts of the stack are still suspended 1337 * and we still drop received frames to avoid waking the stack. 1338 */ 1339 bool resuming; 1340 1341 /* 1342 * quiescing is true during the suspend process _only_ to 1343 * ease timer cancelling etc. 1344 */ 1345 bool quiescing; 1346 1347 /* device is started */ 1348 bool started; 1349 1350 /* device is during a HW reconfig */ 1351 bool in_reconfig; 1352 1353 /* wowlan is enabled -- don't reconfig on resume */ 1354 bool wowlan; 1355 1356 struct work_struct radar_detected_work; 1357 1358 /* number of RX chains the hardware has */ 1359 u8 rx_chains; 1360 1361 /* bitmap of which sbands were copied */ 1362 u8 sband_allocated; 1363 1364 int tx_headroom; /* required headroom for hardware/radiotap */ 1365 1366 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1367 * added to skb_queue will be processed, but frames in 1368 * skb_queue_unreliable may be dropped if the total length of these 1369 * queues increases over the limit. */ 1370 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1371 struct tasklet_struct tasklet; 1372 struct sk_buff_head skb_queue; 1373 struct sk_buff_head skb_queue_unreliable; 1374 1375 spinlock_t rx_path_lock; 1376 1377 /* Station data */ 1378 /* 1379 * The mutex only protects the list, hash table and 1380 * counter, reads are done with RCU. 1381 */ 1382 struct mutex sta_mtx; 1383 spinlock_t tim_lock; 1384 unsigned long num_sta; 1385 struct list_head sta_list; 1386 struct rhltable sta_hash; 1387 struct rhltable link_sta_hash; 1388 struct timer_list sta_cleanup; 1389 int sta_generation; 1390 1391 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1392 struct tasklet_struct tx_pending_tasklet; 1393 struct tasklet_struct wake_txqs_tasklet; 1394 1395 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1396 1397 /* number of interfaces with allmulti RX */ 1398 atomic_t iff_allmultis; 1399 1400 struct rate_control_ref *rate_ctrl; 1401 1402 struct arc4_ctx wep_tx_ctx; 1403 struct arc4_ctx wep_rx_ctx; 1404 u32 wep_iv; 1405 1406 /* see iface.c */ 1407 struct list_head interfaces; 1408 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1409 struct mutex iflist_mtx; 1410 1411 /* 1412 * Key mutex, protects sdata's key_list and sta_info's 1413 * key pointers and ptk_idx (write access, they're RCU.) 1414 */ 1415 struct mutex key_mtx; 1416 1417 /* mutex for scan and work locking */ 1418 struct mutex mtx; 1419 1420 /* Scanning and BSS list */ 1421 unsigned long scanning; 1422 struct cfg80211_ssid scan_ssid; 1423 struct cfg80211_scan_request *int_scan_req; 1424 struct cfg80211_scan_request __rcu *scan_req; 1425 struct ieee80211_scan_request *hw_scan_req; 1426 struct cfg80211_chan_def scan_chandef; 1427 enum nl80211_band hw_scan_band; 1428 int scan_channel_idx; 1429 int scan_ies_len; 1430 int hw_scan_ies_bufsize; 1431 struct cfg80211_scan_info scan_info; 1432 1433 struct work_struct sched_scan_stopped_work; 1434 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1435 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1436 u8 scan_addr[ETH_ALEN]; 1437 1438 unsigned long leave_oper_channel_time; 1439 enum mac80211_scan_state next_scan_state; 1440 struct delayed_work scan_work; 1441 struct ieee80211_sub_if_data __rcu *scan_sdata; 1442 /* For backward compatibility only -- do not use */ 1443 struct cfg80211_chan_def _oper_chandef; 1444 1445 /* Temporary remain-on-channel for off-channel operations */ 1446 struct ieee80211_channel *tmp_channel; 1447 1448 /* channel contexts */ 1449 struct list_head chanctx_list; 1450 struct mutex chanctx_mtx; 1451 1452 #ifdef CONFIG_MAC80211_LEDS 1453 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1454 struct led_trigger tpt_led; 1455 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1456 atomic_t radio_led_active, tpt_led_active; 1457 struct tpt_led_trigger *tpt_led_trigger; 1458 #endif 1459 1460 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1461 /* SNMP counters */ 1462 /* dot11CountersTable */ 1463 u32 dot11TransmittedFragmentCount; 1464 u32 dot11MulticastTransmittedFrameCount; 1465 u32 dot11FailedCount; 1466 u32 dot11RetryCount; 1467 u32 dot11MultipleRetryCount; 1468 u32 dot11FrameDuplicateCount; 1469 u32 dot11ReceivedFragmentCount; 1470 u32 dot11MulticastReceivedFrameCount; 1471 u32 dot11TransmittedFrameCount; 1472 1473 /* TX/RX handler statistics */ 1474 unsigned int tx_handlers_drop; 1475 unsigned int tx_handlers_queued; 1476 unsigned int tx_handlers_drop_wep; 1477 unsigned int tx_handlers_drop_not_assoc; 1478 unsigned int tx_handlers_drop_unauth_port; 1479 unsigned int rx_handlers_drop; 1480 unsigned int rx_handlers_queued; 1481 unsigned int rx_handlers_drop_nullfunc; 1482 unsigned int rx_handlers_drop_defrag; 1483 unsigned int tx_expand_skb_head; 1484 unsigned int tx_expand_skb_head_cloned; 1485 unsigned int rx_expand_skb_head_defrag; 1486 unsigned int rx_handlers_fragments; 1487 unsigned int tx_status_drop; 1488 #define I802_DEBUG_INC(c) (c)++ 1489 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1490 #define I802_DEBUG_INC(c) do { } while (0) 1491 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1492 1493 1494 int total_ps_buffered; /* total number of all buffered unicast and 1495 * multicast packets for power saving stations 1496 */ 1497 1498 bool pspolling; 1499 /* 1500 * PS can only be enabled when we have exactly one managed 1501 * interface (and monitors) in PS, this then points there. 1502 */ 1503 struct ieee80211_sub_if_data *ps_sdata; 1504 struct work_struct dynamic_ps_enable_work; 1505 struct work_struct dynamic_ps_disable_work; 1506 struct timer_list dynamic_ps_timer; 1507 struct notifier_block ifa_notifier; 1508 struct notifier_block ifa6_notifier; 1509 1510 /* 1511 * The dynamic ps timeout configured from user space via WEXT - 1512 * this will override whatever chosen by mac80211 internally. 1513 */ 1514 int dynamic_ps_forced_timeout; 1515 1516 int user_power_level; /* in dBm, for all interfaces */ 1517 1518 enum ieee80211_smps_mode smps_mode; 1519 1520 struct work_struct restart_work; 1521 1522 #ifdef CONFIG_MAC80211_DEBUGFS 1523 struct local_debugfsdentries { 1524 struct dentry *rcdir; 1525 struct dentry *keys; 1526 } debugfs; 1527 bool force_tx_status; 1528 #endif 1529 1530 /* 1531 * Remain-on-channel support 1532 */ 1533 struct delayed_work roc_work; 1534 struct list_head roc_list; 1535 struct work_struct hw_roc_start, hw_roc_done; 1536 unsigned long hw_roc_start_time; 1537 u64 roc_cookie_counter; 1538 1539 struct idr ack_status_frames; 1540 spinlock_t ack_status_lock; 1541 1542 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1543 1544 /* virtual monitor interface */ 1545 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1546 struct cfg80211_chan_def monitor_chandef; 1547 1548 /* extended capabilities provided by mac80211 */ 1549 u8 ext_capa[8]; 1550 }; 1551 1552 static inline struct ieee80211_sub_if_data * 1553 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1554 { 1555 return netdev_priv(dev); 1556 } 1557 1558 static inline struct ieee80211_sub_if_data * 1559 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1560 { 1561 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1562 } 1563 1564 static inline struct ieee80211_supported_band * 1565 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1566 { 1567 struct ieee80211_local *local = sdata->local; 1568 struct ieee80211_chanctx_conf *chanctx_conf; 1569 enum nl80211_band band; 1570 1571 WARN_ON(sdata->vif.valid_links); 1572 1573 rcu_read_lock(); 1574 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1575 1576 if (!chanctx_conf) { 1577 rcu_read_unlock(); 1578 return NULL; 1579 } 1580 1581 band = chanctx_conf->def.chan->band; 1582 rcu_read_unlock(); 1583 1584 return local->hw.wiphy->bands[band]; 1585 } 1586 1587 static inline struct ieee80211_supported_band * 1588 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1589 { 1590 struct ieee80211_local *local = link->sdata->local; 1591 struct ieee80211_chanctx_conf *chanctx_conf; 1592 enum nl80211_band band; 1593 1594 rcu_read_lock(); 1595 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1596 if (!chanctx_conf) { 1597 rcu_read_unlock(); 1598 return NULL; 1599 } 1600 1601 band = chanctx_conf->def.chan->band; 1602 rcu_read_unlock(); 1603 1604 return local->hw.wiphy->bands[band]; 1605 } 1606 1607 /* this struct holds the value parsing from channel switch IE */ 1608 struct ieee80211_csa_ie { 1609 struct cfg80211_chan_def chandef; 1610 u8 mode; 1611 u8 count; 1612 u8 ttl; 1613 u16 pre_value; 1614 u16 reason_code; 1615 u32 max_switch_time; 1616 }; 1617 1618 /* Parsed Information Elements */ 1619 struct ieee802_11_elems { 1620 const u8 *ie_start; 1621 size_t total_len; 1622 u32 crc; 1623 1624 /* pointers to IEs */ 1625 const struct ieee80211_tdls_lnkie *lnk_id; 1626 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1627 const u8 *ext_capab; 1628 const u8 *ssid; 1629 const u8 *supp_rates; 1630 const u8 *ds_params; 1631 const struct ieee80211_tim_ie *tim; 1632 const u8 *rsn; 1633 const u8 *rsnx; 1634 const u8 *erp_info; 1635 const u8 *ext_supp_rates; 1636 const u8 *wmm_info; 1637 const u8 *wmm_param; 1638 const struct ieee80211_ht_cap *ht_cap_elem; 1639 const struct ieee80211_ht_operation *ht_operation; 1640 const struct ieee80211_vht_cap *vht_cap_elem; 1641 const struct ieee80211_vht_operation *vht_operation; 1642 const struct ieee80211_meshconf_ie *mesh_config; 1643 const u8 *he_cap; 1644 const struct ieee80211_he_operation *he_operation; 1645 const struct ieee80211_he_spr *he_spr; 1646 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1647 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1648 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1649 const u8 *uora_element; 1650 const u8 *mesh_id; 1651 const u8 *peering; 1652 const __le16 *awake_window; 1653 const u8 *preq; 1654 const u8 *prep; 1655 const u8 *perr; 1656 const struct ieee80211_rann_ie *rann; 1657 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1658 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1659 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1660 const u8 *max_channel_switch_time; 1661 const u8 *country_elem; 1662 const u8 *pwr_constr_elem; 1663 const u8 *cisco_dtpc_elem; 1664 const struct ieee80211_timeout_interval_ie *timeout_int; 1665 const u8 *opmode_notif; 1666 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1667 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1668 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1669 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1670 const struct ieee80211_bssid_index *bssid_index; 1671 u8 max_bssid_indicator; 1672 u8 dtim_count; 1673 u8 dtim_period; 1674 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1675 const struct ieee80211_s1g_cap *s1g_capab; 1676 const struct ieee80211_s1g_oper_ie *s1g_oper; 1677 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1678 const struct ieee80211_aid_response_ie *aid_resp; 1679 const struct ieee80211_eht_cap_elem *eht_cap; 1680 const struct ieee80211_eht_operation *eht_operation; 1681 const struct ieee80211_multi_link_elem *multi_link; 1682 1683 /* length of them, respectively */ 1684 u8 ext_capab_len; 1685 u8 ssid_len; 1686 u8 supp_rates_len; 1687 u8 tim_len; 1688 u8 rsn_len; 1689 u8 rsnx_len; 1690 u8 ext_supp_rates_len; 1691 u8 wmm_info_len; 1692 u8 wmm_param_len; 1693 u8 he_cap_len; 1694 u8 mesh_id_len; 1695 u8 peering_len; 1696 u8 preq_len; 1697 u8 prep_len; 1698 u8 perr_len; 1699 u8 country_elem_len; 1700 u8 bssid_index_len; 1701 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1702 u8 tx_pwr_env_num; 1703 u8 eht_cap_len; 1704 1705 /* whether a parse error occurred while retrieving these elements */ 1706 bool parse_error; 1707 }; 1708 1709 static inline struct ieee80211_local *hw_to_local( 1710 struct ieee80211_hw *hw) 1711 { 1712 return container_of(hw, struct ieee80211_local, hw); 1713 } 1714 1715 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1716 { 1717 return container_of(txq, struct txq_info, txq); 1718 } 1719 1720 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1721 { 1722 struct txq_info *txqi = to_txq_info(txq); 1723 1724 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1725 } 1726 1727 static inline bool 1728 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1729 { 1730 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1731 status->flag & RX_FLAG_MACTIME_END); 1732 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1733 RX_FLAG_MACTIME_PLCP_START)); 1734 } 1735 1736 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1737 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1738 1739 /* This function returns the number of multicast stations connected to this 1740 * interface. It returns -1 if that number is not tracked, that is for netdevs 1741 * not in AP or AP_VLAN mode or when using 4addr. 1742 */ 1743 static inline int 1744 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1745 { 1746 if (sdata->vif.type == NL80211_IFTYPE_AP) 1747 return atomic_read(&sdata->u.ap.num_mcast_sta); 1748 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1749 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1750 return -1; 1751 } 1752 1753 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1754 struct ieee80211_rx_status *status, 1755 unsigned int mpdu_len, 1756 unsigned int mpdu_offset); 1757 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1758 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1759 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1760 u64 changed); 1761 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1762 u64 changed); 1763 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1764 struct ieee80211_link_data *link, 1765 u64 changed); 1766 void ieee80211_configure_filter(struct ieee80211_local *local); 1767 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1768 1769 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1770 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1771 u64 *cookie, gfp_t gfp); 1772 1773 void ieee80211_check_fast_rx(struct sta_info *sta); 1774 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1775 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1776 void ieee80211_clear_fast_rx(struct sta_info *sta); 1777 1778 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1779 const u8 *addr, int *out_link_id); 1780 1781 /* STA code */ 1782 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1783 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1784 struct cfg80211_auth_request *req); 1785 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1786 struct cfg80211_assoc_request *req); 1787 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1788 struct cfg80211_deauth_request *req); 1789 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1790 struct cfg80211_disassoc_request *req); 1791 void ieee80211_send_pspoll(struct ieee80211_local *local, 1792 struct ieee80211_sub_if_data *sdata); 1793 void ieee80211_recalc_ps(struct ieee80211_local *local); 1794 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1795 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1796 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1797 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1798 struct sk_buff *skb); 1799 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1800 struct sk_buff *skb); 1801 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1802 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1803 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1804 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1805 __le16 fc, bool acked); 1806 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1807 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1808 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1809 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1810 u8 reason, bool tx); 1811 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1812 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1813 1814 /* IBSS code */ 1815 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1816 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1817 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1818 const u8 *bssid, const u8 *addr, u32 supp_rates); 1819 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1820 struct cfg80211_ibss_params *params); 1821 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1822 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1823 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1824 struct sk_buff *skb); 1825 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1826 struct cfg80211_csa_settings *csa_settings); 1827 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1828 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1829 1830 /* OCB code */ 1831 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1832 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1833 const u8 *bssid, const u8 *addr, u32 supp_rates); 1834 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1835 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1836 struct ocb_setup *setup); 1837 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1838 1839 /* mesh code */ 1840 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1841 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1842 struct sk_buff *skb); 1843 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1844 struct cfg80211_csa_settings *csa_settings); 1845 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1846 1847 /* scan/BSS handling */ 1848 void ieee80211_scan_work(struct work_struct *work); 1849 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1850 const u8 *ssid, u8 ssid_len, 1851 struct ieee80211_channel **channels, 1852 unsigned int n_channels, 1853 enum nl80211_bss_scan_width scan_width); 1854 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1855 struct cfg80211_scan_request *req); 1856 void ieee80211_scan_cancel(struct ieee80211_local *local); 1857 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1858 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1859 1860 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1861 struct ieee80211_bss * 1862 ieee80211_bss_info_update(struct ieee80211_local *local, 1863 struct ieee80211_rx_status *rx_status, 1864 struct ieee80211_mgmt *mgmt, 1865 size_t len, 1866 struct ieee80211_channel *channel); 1867 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1868 struct ieee80211_bss *bss); 1869 1870 /* scheduled scan handling */ 1871 int 1872 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1873 struct cfg80211_sched_scan_request *req); 1874 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1875 struct cfg80211_sched_scan_request *req); 1876 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1877 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1878 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1879 1880 /* off-channel/mgmt-tx */ 1881 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1882 void ieee80211_offchannel_return(struct ieee80211_local *local); 1883 void ieee80211_roc_setup(struct ieee80211_local *local); 1884 void ieee80211_start_next_roc(struct ieee80211_local *local); 1885 void ieee80211_roc_purge(struct ieee80211_local *local, 1886 struct ieee80211_sub_if_data *sdata); 1887 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1888 struct ieee80211_channel *chan, 1889 unsigned int duration, u64 *cookie); 1890 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1891 struct wireless_dev *wdev, u64 cookie); 1892 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1893 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1894 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1895 struct wireless_dev *wdev, u64 cookie); 1896 1897 /* channel switch handling */ 1898 void ieee80211_csa_finalize_work(struct work_struct *work); 1899 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1900 struct cfg80211_csa_settings *params); 1901 1902 /* color change handling */ 1903 void ieee80211_color_change_finalize_work(struct work_struct *work); 1904 1905 /* interface handling */ 1906 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1907 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1908 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1909 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1910 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1911 MAC80211_SUPPORTED_FEATURES_RX) 1912 1913 int ieee80211_iface_init(void); 1914 void ieee80211_iface_exit(void); 1915 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1916 unsigned char name_assign_type, 1917 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1918 struct vif_params *params); 1919 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1920 enum nl80211_iftype type); 1921 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1922 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1923 u32 ieee80211_idle_off(struct ieee80211_local *local); 1924 void ieee80211_recalc_idle(struct ieee80211_local *local); 1925 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1926 const int offset); 1927 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1928 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1929 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1930 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1931 1932 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 1933 u16 new_links); 1934 1935 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1936 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1937 bool update_bss); 1938 void ieee80211_recalc_offload(struct ieee80211_local *local); 1939 1940 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1941 { 1942 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1943 } 1944 1945 /* tx handling */ 1946 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1947 void ieee80211_tx_pending(struct tasklet_struct *t); 1948 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1949 struct net_device *dev); 1950 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1951 struct net_device *dev); 1952 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1953 struct net_device *dev); 1954 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1955 struct net_device *dev, 1956 u32 info_flags, 1957 u32 ctrl_flags, 1958 u64 *cookie); 1959 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1960 struct sk_buff_head *skbs); 1961 struct sk_buff * 1962 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1963 struct sk_buff *skb, u32 info_flags); 1964 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1965 int retry_count, int shift, bool send_to_cooked, 1966 struct ieee80211_tx_status *status); 1967 1968 void ieee80211_check_fast_xmit(struct sta_info *sta); 1969 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1970 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1971 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1972 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1973 const u8 *buf, size_t len, 1974 const u8 *dest, __be16 proto, bool unencrypted, 1975 int link_id, u64 *cookie); 1976 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1977 const u8 *buf, size_t len); 1978 1979 /* HT */ 1980 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1981 struct ieee80211_sta_ht_cap *ht_cap); 1982 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1983 struct ieee80211_supported_band *sband, 1984 const struct ieee80211_ht_cap *ht_cap_ie, 1985 struct link_sta_info *link_sta); 1986 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1987 const u8 *da, u16 tid, 1988 u16 initiator, u16 reason_code); 1989 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1990 enum ieee80211_smps_mode smps, const u8 *da, 1991 const u8 *bssid); 1992 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1993 enum ieee80211_smps_mode smps_mode_new); 1994 1995 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1996 u16 initiator, u16 reason, bool stop); 1997 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1998 u16 initiator, u16 reason, bool stop); 1999 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2000 u8 dialog_token, u16 timeout, 2001 u16 start_seq_num, u16 ba_policy, u16 tid, 2002 u16 buf_size, bool tx, bool auto_seq, 2003 const struct ieee80211_addba_ext_ie *addbaext); 2004 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2005 enum ieee80211_agg_stop_reason reason); 2006 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2007 struct sta_info *sta, 2008 struct ieee80211_mgmt *mgmt, size_t len); 2009 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2010 struct sta_info *sta, 2011 struct ieee80211_mgmt *mgmt, 2012 size_t len); 2013 void ieee80211_process_addba_request(struct ieee80211_local *local, 2014 struct sta_info *sta, 2015 struct ieee80211_mgmt *mgmt, 2016 size_t len); 2017 2018 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2019 enum ieee80211_agg_stop_reason reason); 2020 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2021 enum ieee80211_agg_stop_reason reason); 2022 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2023 struct tid_ampdu_tx *tid_tx); 2024 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2025 struct tid_ampdu_tx *tid_tx); 2026 void ieee80211_ba_session_work(struct work_struct *work); 2027 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2028 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2029 2030 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2031 enum nl80211_smps_mode 2032 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2033 2034 /* VHT */ 2035 void 2036 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2037 struct ieee80211_supported_band *sband, 2038 const struct ieee80211_vht_cap *vht_cap_ie, 2039 struct link_sta_info *link_sta); 2040 enum ieee80211_sta_rx_bandwidth 2041 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta); 2042 enum ieee80211_sta_rx_bandwidth 2043 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta); 2044 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta); 2045 enum ieee80211_sta_rx_bandwidth 2046 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2047 enum nl80211_chan_width 2048 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2049 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2050 struct ieee80211_link_data *link, 2051 struct ieee80211_mgmt *mgmt); 2052 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2053 struct link_sta_info *sta, 2054 u8 opmode, enum nl80211_band band); 2055 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2056 struct link_sta_info *sta, 2057 u8 opmode, enum nl80211_band band); 2058 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2059 struct ieee80211_sta_vht_cap *vht_cap); 2060 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2061 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2062 enum nl80211_chan_width 2063 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2064 2065 /* HE */ 2066 void 2067 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2068 struct ieee80211_supported_band *sband, 2069 const u8 *he_cap_ie, u8 he_cap_len, 2070 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2071 struct link_sta_info *link_sta); 2072 void 2073 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2074 const struct ieee80211_he_spr *he_spr_ie_elem); 2075 2076 void 2077 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2078 const struct ieee80211_he_operation *he_op_ie_elem); 2079 2080 /* S1G */ 2081 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2082 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2083 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2084 struct sk_buff *skb); 2085 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2086 struct sk_buff *skb); 2087 2088 /* Spectrum management */ 2089 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2090 struct ieee80211_mgmt *mgmt, 2091 size_t len); 2092 /** 2093 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2094 * @sdata: the sdata of the interface which has received the frame 2095 * @elems: parsed 802.11 elements received with the frame 2096 * @current_band: indicates the current band 2097 * @vht_cap_info: VHT capabilities of the transmitter 2098 * @conn_flags: contains information about own capabilities and restrictions 2099 * to decide which channel switch announcements can be accepted, using 2100 * flags from &enum ieee80211_conn_flags. 2101 * @bssid: the currently connected bssid (for reporting) 2102 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2103 All of them will be filled with if success only. 2104 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2105 */ 2106 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2107 struct ieee802_11_elems *elems, 2108 enum nl80211_band current_band, 2109 u32 vht_cap_info, 2110 ieee80211_conn_flags_t conn_flags, u8 *bssid, 2111 struct ieee80211_csa_ie *csa_ie); 2112 2113 /* Suspend/resume and hw reconfiguration */ 2114 int ieee80211_reconfig(struct ieee80211_local *local); 2115 void ieee80211_stop_device(struct ieee80211_local *local); 2116 2117 int __ieee80211_suspend(struct ieee80211_hw *hw, 2118 struct cfg80211_wowlan *wowlan); 2119 2120 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2121 { 2122 struct ieee80211_local *local = hw_to_local(hw); 2123 2124 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2125 !test_bit(SCAN_COMPLETED, &local->scanning), 2126 "%s: resume with hardware scan still in progress\n", 2127 wiphy_name(hw->wiphy)); 2128 2129 return ieee80211_reconfig(hw_to_local(hw)); 2130 } 2131 2132 /* utility functions/constants */ 2133 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2134 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2135 int rate, int erp, int short_preamble, 2136 int shift); 2137 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2138 struct ieee80211_tx_queue_params *qparam, 2139 int ac); 2140 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2141 bool bss_notify, bool enable_qos); 2142 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2143 struct sta_info *sta, struct sk_buff *skb); 2144 2145 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2146 struct sk_buff *skb, int tid, int link_id, 2147 enum nl80211_band band); 2148 2149 /* sta_out needs to be checked for ERR_PTR() before using */ 2150 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2151 struct sk_buff *skb, 2152 struct sta_info **sta_out); 2153 2154 static inline void 2155 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2156 struct sk_buff *skb, int tid, 2157 enum nl80211_band band) 2158 { 2159 rcu_read_lock(); 2160 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2161 rcu_read_unlock(); 2162 } 2163 2164 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2165 struct sk_buff *skb, int tid, int link_id); 2166 2167 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2168 struct sk_buff *skb) 2169 { 2170 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2171 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2172 } 2173 2174 /** 2175 * struct ieee80211_elems_parse_params - element parsing parameters 2176 * @start: pointer to the elements 2177 * @len: length of the elements 2178 * @action: %true if the elements came from an action frame 2179 * @filter: bitmap of element IDs to filter out while calculating 2180 * the element CRC 2181 * @crc: CRC starting value 2182 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2183 * represent a non-transmitting BSS in which case the data 2184 * for that non-transmitting BSS is returned 2185 * @link_id: the link ID to parse elements for, if a STA profile 2186 * is present in the multi-link element, or -1 to ignore 2187 */ 2188 struct ieee80211_elems_parse_params { 2189 const u8 *start; 2190 size_t len; 2191 bool action; 2192 u64 filter; 2193 u32 crc; 2194 struct cfg80211_bss *bss; 2195 int link_id; 2196 }; 2197 2198 struct ieee802_11_elems * 2199 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2200 2201 static inline struct ieee802_11_elems * 2202 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2203 u64 filter, u32 crc, 2204 struct cfg80211_bss *bss) 2205 { 2206 struct ieee80211_elems_parse_params params = { 2207 .start = start, 2208 .len = len, 2209 .action = action, 2210 .filter = filter, 2211 .crc = crc, 2212 .bss = bss, 2213 .link_id = -1, 2214 }; 2215 2216 return ieee802_11_parse_elems_full(¶ms); 2217 } 2218 2219 static inline struct ieee802_11_elems * 2220 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2221 struct cfg80211_bss *bss) 2222 { 2223 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2224 } 2225 2226 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos); 2227 2228 extern const int ieee802_1d_to_ac[8]; 2229 2230 static inline int ieee80211_ac_from_tid(int tid) 2231 { 2232 return ieee802_1d_to_ac[tid & 7]; 2233 } 2234 2235 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2236 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2237 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2238 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2239 struct ieee80211_sub_if_data *sdata, 2240 bool powersave); 2241 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2242 struct ieee80211_sub_if_data *sdata); 2243 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2244 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2245 2246 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2247 unsigned long queues, 2248 enum queue_stop_reason reason, 2249 bool refcounted); 2250 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2251 struct ieee80211_sub_if_data *sdata, 2252 enum queue_stop_reason reason); 2253 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2254 struct ieee80211_sub_if_data *sdata, 2255 enum queue_stop_reason reason); 2256 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2257 unsigned long queues, 2258 enum queue_stop_reason reason, 2259 bool refcounted); 2260 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2261 enum queue_stop_reason reason, 2262 bool refcounted); 2263 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2264 enum queue_stop_reason reason, 2265 bool refcounted); 2266 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2267 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2268 struct sk_buff *skb); 2269 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2270 struct sk_buff_head *skbs); 2271 void ieee80211_flush_queues(struct ieee80211_local *local, 2272 struct ieee80211_sub_if_data *sdata, bool drop); 2273 void __ieee80211_flush_queues(struct ieee80211_local *local, 2274 struct ieee80211_sub_if_data *sdata, 2275 unsigned int queues, bool drop); 2276 2277 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2278 { 2279 /* 2280 * It's unsafe to try to do any work during reconfigure flow. 2281 * When the flow ends the work will be requeued. 2282 */ 2283 if (local->in_reconfig) 2284 return false; 2285 2286 /* 2287 * If quiescing is set, we are racing with __ieee80211_suspend. 2288 * __ieee80211_suspend flushes the workers after setting quiescing, 2289 * and we check quiescing / suspended before enqueing new workers. 2290 * We should abort the worker to avoid the races below. 2291 */ 2292 if (local->quiescing) 2293 return false; 2294 2295 /* 2296 * We might already be suspended if the following scenario occurs: 2297 * __ieee80211_suspend Control path 2298 * 2299 * if (local->quiescing) 2300 * return; 2301 * local->quiescing = true; 2302 * flush_workqueue(); 2303 * queue_work(...); 2304 * local->suspended = true; 2305 * local->quiescing = false; 2306 * worker starts running... 2307 */ 2308 if (local->suspended) 2309 return false; 2310 2311 return true; 2312 } 2313 2314 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2315 void ieee80211_txq_set_params(struct ieee80211_local *local); 2316 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2317 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2318 struct sta_info *sta, 2319 struct txq_info *txq, int tid); 2320 void ieee80211_txq_purge(struct ieee80211_local *local, 2321 struct txq_info *txqi); 2322 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2323 struct ieee80211_sub_if_data *sdata); 2324 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2325 struct txq_info *txqi); 2326 void ieee80211_wake_txqs(struct tasklet_struct *t); 2327 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2328 u16 transaction, u16 auth_alg, u16 status, 2329 const u8 *extra, size_t extra_len, const u8 *bssid, 2330 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2331 u32 tx_flags); 2332 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2333 const u8 *da, const u8 *bssid, 2334 u16 stype, u16 reason, 2335 bool send_frame, u8 *frame_buf); 2336 2337 enum { 2338 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2339 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2340 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2341 }; 2342 2343 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2344 size_t buffer_len, 2345 struct ieee80211_scan_ies *ie_desc, 2346 const u8 *ie, size_t ie_len, 2347 u8 bands_used, u32 *rate_masks, 2348 struct cfg80211_chan_def *chandef, 2349 u32 flags); 2350 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2351 const u8 *src, const u8 *dst, 2352 u32 ratemask, 2353 struct ieee80211_channel *chan, 2354 const u8 *ssid, size_t ssid_len, 2355 const u8 *ie, size_t ie_len, 2356 u32 flags); 2357 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2358 struct ieee802_11_elems *elems, 2359 enum nl80211_band band, u32 *basic_rates); 2360 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2361 struct ieee80211_link_data *link, 2362 enum ieee80211_smps_mode smps_mode); 2363 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2364 struct ieee80211_link_data *link); 2365 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2366 int link_id); 2367 2368 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2369 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2370 u16 cap); 2371 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2372 const struct cfg80211_chan_def *chandef, 2373 u16 prot_mode, bool rifs_mode); 2374 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2375 const struct cfg80211_chan_def *chandef); 2376 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2377 u32 cap); 2378 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2379 const struct cfg80211_chan_def *chandef); 2380 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2381 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, 2382 const struct ieee80211_sta_he_cap *he_cap, 2383 u8 *end); 2384 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2385 struct sk_buff *skb); 2386 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2387 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2388 const struct ieee80211_supported_band *sband, 2389 const u8 *srates, int srates_len, u32 *rates); 2390 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2391 struct sk_buff *skb, bool need_basic, 2392 enum nl80211_band band); 2393 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2394 struct sk_buff *skb, bool need_basic, 2395 enum nl80211_band band); 2396 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2397 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2398 struct ieee80211_sta_s1g_cap *caps, 2399 struct sk_buff *skb); 2400 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2401 struct sk_buff *skb); 2402 2403 /* channel management */ 2404 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2405 struct cfg80211_chan_def *chandef); 2406 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2407 const struct ieee80211_vht_operation *oper, 2408 const struct ieee80211_ht_operation *htop, 2409 struct cfg80211_chan_def *chandef); 2410 void ieee80211_chandef_eht_oper(struct ieee80211_sub_if_data *sdata, 2411 const struct ieee80211_eht_operation *eht_oper, 2412 bool support_160, bool support_320, 2413 struct cfg80211_chan_def *chandef); 2414 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2415 const struct ieee80211_he_operation *he_oper, 2416 const struct ieee80211_eht_operation *eht_oper, 2417 struct cfg80211_chan_def *chandef); 2418 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2419 struct cfg80211_chan_def *chandef); 2420 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2421 2422 int __must_check 2423 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2424 const struct cfg80211_chan_def *chandef, 2425 enum ieee80211_chanctx_mode mode); 2426 int __must_check 2427 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2428 const struct cfg80211_chan_def *chandef, 2429 enum ieee80211_chanctx_mode mode, 2430 bool radar_required); 2431 int __must_check 2432 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2433 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2434 2435 int __must_check 2436 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, 2437 const struct cfg80211_chan_def *chandef, 2438 u32 *changed); 2439 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2440 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2441 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2442 bool clear); 2443 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2444 struct ieee80211_chanctx *ctx); 2445 2446 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2447 struct ieee80211_chanctx *chanctx); 2448 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2449 struct ieee80211_chanctx *ctx); 2450 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2451 2452 void ieee80211_dfs_cac_timer(unsigned long data); 2453 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2454 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2455 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2456 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2457 struct cfg80211_csa_settings *csa_settings); 2458 2459 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2460 struct ieee80211_sub_if_data *sdata); 2461 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2462 const struct cfg80211_chan_def *chandef, 2463 enum ieee80211_chanctx_mode chanmode, 2464 u8 radar_detect); 2465 int ieee80211_max_num_channels(struct ieee80211_local *local); 2466 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2467 struct ieee80211_chanctx *ctx); 2468 2469 /* TDLS */ 2470 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2471 const u8 *peer, u8 action_code, u8 dialog_token, 2472 u16 status_code, u32 peer_capability, 2473 bool initiator, const u8 *extra_ies, 2474 size_t extra_ies_len); 2475 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2476 const u8 *peer, enum nl80211_tdls_operation oper); 2477 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2478 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2479 const u8 *addr, u8 oper_class, 2480 struct cfg80211_chan_def *chandef); 2481 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2482 struct net_device *dev, 2483 const u8 *addr); 2484 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2485 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2486 const u8 *peer, u16 reason); 2487 void 2488 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2489 struct sk_buff *skb); 2490 2491 2492 const char *ieee80211_get_reason_code_string(u16 reason_code); 2493 u16 ieee80211_encode_usf(int val); 2494 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2495 enum nl80211_iftype type); 2496 2497 extern const struct ethtool_ops ieee80211_ethtool_ops; 2498 2499 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2500 struct ieee80211_vif *vif, 2501 struct ieee80211_sta *pubsta, 2502 int len, bool ampdu); 2503 #ifdef CONFIG_MAC80211_NOINLINE 2504 #define debug_noinline noinline 2505 #else 2506 #define debug_noinline 2507 #endif 2508 2509 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2510 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2511 2512 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2513 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2514 const struct ieee80211_sta_he_cap *he_cap, 2515 const struct ieee80211_sta_eht_cap *eht_cap, 2516 u8 *end); 2517 2518 void 2519 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2520 struct ieee80211_supported_band *sband, 2521 const u8 *he_cap_ie, u8 he_cap_len, 2522 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2523 u8 eht_cap_len, 2524 struct link_sta_info *link_sta); 2525 #endif /* IEEE80211_I_H */ 2526