1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2002-2005, Instant802 Networks, Inc. 4 * Copyright 2005, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2015 Intel Mobile Communications GmbH 8 * Copyright (C) 2018-2022 Intel Corporation 9 */ 10 11 #ifndef IEEE80211_I_H 12 #define IEEE80211_I_H 13 14 #include <linux/kernel.h> 15 #include <linux/device.h> 16 #include <linux/if_ether.h> 17 #include <linux/interrupt.h> 18 #include <linux/list.h> 19 #include <linux/netdevice.h> 20 #include <linux/skbuff.h> 21 #include <linux/workqueue.h> 22 #include <linux/types.h> 23 #include <linux/spinlock.h> 24 #include <linux/etherdevice.h> 25 #include <linux/leds.h> 26 #include <linux/idr.h> 27 #include <linux/rhashtable.h> 28 #include <linux/rbtree.h> 29 #include <net/ieee80211_radiotap.h> 30 #include <net/cfg80211.h> 31 #include <net/mac80211.h> 32 #include <net/fq.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 #include "drop.h" 37 38 extern const struct cfg80211_ops mac80211_config_ops; 39 40 struct ieee80211_local; 41 struct ieee80211_mesh_fast_tx; 42 43 /* Maximum number of broadcast/multicast frames to buffer when some of the 44 * associated stations are using power saving. */ 45 #define AP_MAX_BC_BUFFER 128 46 47 /* Maximum number of frames buffered to all STAs, including multicast frames. 48 * Note: increasing this limit increases the potential memory requirement. Each 49 * frame can be up to about 2 kB long. */ 50 #define TOTAL_MAX_TX_BUFFER 512 51 52 /* Required encryption head and tailroom */ 53 #define IEEE80211_ENCRYPT_HEADROOM 8 54 #define IEEE80211_ENCRYPT_TAILROOM 18 55 56 /* power level hasn't been configured (or set to automatic) */ 57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 58 59 /* 60 * Some APs experience problems when working with U-APSD. Decreasing the 61 * probability of that happening by using legacy mode for all ACs but VO isn't 62 * enough. 63 * 64 * Cisco 4410N originally forced us to enable VO by default only because it 65 * treated non-VO ACs as legacy. 66 * 67 * However some APs (notably Netgear R7000) silently reclassify packets to 68 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 69 * clients would never see some frames (e.g. ARP responses) or would fetch them 70 * accidentally after a long time. 71 * 72 * It makes little sense to enable u-APSD queues by default because it needs 73 * userspace applications to be aware of it to actually take advantage of the 74 * possible additional powersavings. Implicitly depending on driver autotrigger 75 * frame support doesn't make much sense. 76 */ 77 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 78 79 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 80 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 81 82 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 83 84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 85 86 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 87 88 89 /* 90 * Keep a station's queues on the active list for deficit accounting purposes 91 * if it was active or queued during the last 100ms 92 */ 93 #define AIRTIME_ACTIVE_DURATION (HZ / 10) 94 95 struct ieee80211_bss { 96 u32 device_ts_beacon, device_ts_presp; 97 98 bool wmm_used; 99 bool uapsd_supported; 100 101 #define IEEE80211_MAX_SUPP_RATES 32 102 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 103 size_t supp_rates_len; 104 struct ieee80211_rate *beacon_rate; 105 106 u32 vht_cap_info; 107 108 /* 109 * During association, we save an ERP value from a probe response so 110 * that we can feed ERP info to the driver when handling the 111 * association completes. these fields probably won't be up-to-date 112 * otherwise, you probably don't want to use them. 113 */ 114 bool has_erp_value; 115 u8 erp_value; 116 117 /* Keep track of the corruption of the last beacon/probe response. */ 118 u8 corrupt_data; 119 120 /* Keep track of what bits of information we have valid info for. */ 121 u8 valid_data; 122 }; 123 124 /** 125 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 126 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 127 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 128 * 129 * These are bss flags that are attached to a bss in the 130 * @corrupt_data field of &struct ieee80211_bss. 131 */ 132 enum ieee80211_bss_corrupt_data_flags { 133 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 134 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 135 }; 136 137 /** 138 * enum ieee80211_valid_data_flags - BSS valid data flags 139 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 140 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 142 * 143 * These are bss flags that are attached to a bss in the 144 * @valid_data field of &struct ieee80211_bss. They show which parts 145 * of the data structure were received as a result of an un-corrupted 146 * beacon/probe response. 147 */ 148 enum ieee80211_bss_valid_data_flags { 149 IEEE80211_BSS_VALID_WMM = BIT(1), 150 IEEE80211_BSS_VALID_RATES = BIT(2), 151 IEEE80211_BSS_VALID_ERP = BIT(3) 152 }; 153 154 typedef unsigned __bitwise ieee80211_tx_result; 155 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 156 #define TX_DROP ((__force ieee80211_tx_result) 1u) 157 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 158 159 #define IEEE80211_TX_UNICAST BIT(1) 160 #define IEEE80211_TX_PS_BUFFERED BIT(2) 161 162 struct ieee80211_tx_data { 163 struct sk_buff *skb; 164 struct sk_buff_head skbs; 165 struct ieee80211_local *local; 166 struct ieee80211_sub_if_data *sdata; 167 struct sta_info *sta; 168 struct ieee80211_key *key; 169 struct ieee80211_tx_rate rate; 170 171 unsigned int flags; 172 }; 173 174 /** 175 * enum ieee80211_packet_rx_flags - packet RX flags 176 * @IEEE80211_RX_AMSDU: a-MSDU packet 177 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 178 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 179 * 180 * These are per-frame flags that are attached to a frame in the 181 * @rx_flags field of &struct ieee80211_rx_status. 182 */ 183 enum ieee80211_packet_rx_flags { 184 IEEE80211_RX_AMSDU = BIT(3), 185 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 186 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 187 }; 188 189 /** 190 * enum ieee80211_rx_flags - RX data flags 191 * 192 * @IEEE80211_RX_CMNTR: received on cooked monitor already 193 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 194 * to cfg80211_report_obss_beacon(). 195 * 196 * These flags are used across handling multiple interfaces 197 * for a single frame. 198 */ 199 enum ieee80211_rx_flags { 200 IEEE80211_RX_CMNTR = BIT(0), 201 IEEE80211_RX_BEACON_REPORTED = BIT(1), 202 }; 203 204 struct ieee80211_rx_data { 205 struct list_head *list; 206 struct sk_buff *skb; 207 struct ieee80211_local *local; 208 struct ieee80211_sub_if_data *sdata; 209 struct ieee80211_link_data *link; 210 struct sta_info *sta; 211 struct link_sta_info *link_sta; 212 struct ieee80211_key *key; 213 214 unsigned int flags; 215 216 /* 217 * Index into sequence numbers array, 0..16 218 * since the last (16) is used for non-QoS, 219 * will be 16 on non-QoS frames. 220 */ 221 int seqno_idx; 222 223 /* 224 * Index into the security IV/PN arrays, 0..16 225 * since the last (16) is used for CCMP-encrypted 226 * management frames, will be set to 16 on mgmt 227 * frames and 0 on non-QoS frames. 228 */ 229 int security_idx; 230 231 int link_id; 232 233 union { 234 struct { 235 u32 iv32; 236 u16 iv16; 237 } tkip; 238 struct { 239 u8 pn[IEEE80211_CCMP_PN_LEN]; 240 } ccm_gcm; 241 }; 242 }; 243 244 struct ieee80211_csa_settings { 245 const u16 *counter_offsets_beacon; 246 const u16 *counter_offsets_presp; 247 248 int n_counter_offsets_beacon; 249 int n_counter_offsets_presp; 250 251 u8 count; 252 }; 253 254 struct ieee80211_color_change_settings { 255 u16 counter_offset_beacon; 256 u16 counter_offset_presp; 257 u8 count; 258 }; 259 260 struct beacon_data { 261 u8 *head, *tail; 262 int head_len, tail_len; 263 struct ieee80211_meshconf_ie *meshconf; 264 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 265 u8 cntdwn_current_counter; 266 struct cfg80211_mbssid_elems *mbssid_ies; 267 struct cfg80211_rnr_elems *rnr_ies; 268 struct rcu_head rcu_head; 269 }; 270 271 struct probe_resp { 272 struct rcu_head rcu_head; 273 int len; 274 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 275 u8 data[]; 276 }; 277 278 struct fils_discovery_data { 279 struct rcu_head rcu_head; 280 int len; 281 u8 data[]; 282 }; 283 284 struct unsol_bcast_probe_resp_data { 285 struct rcu_head rcu_head; 286 int len; 287 u8 data[]; 288 }; 289 290 struct ps_data { 291 /* yes, this looks ugly, but guarantees that we can later use 292 * bitmap_empty :) 293 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 294 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 295 __aligned(__alignof__(unsigned long)); 296 struct sk_buff_head bc_buf; 297 atomic_t num_sta_ps; /* number of stations in PS mode */ 298 int dtim_count; 299 bool dtim_bc_mc; 300 }; 301 302 struct ieee80211_if_ap { 303 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 304 305 struct ps_data ps; 306 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 307 308 bool multicast_to_unicast; 309 bool active; 310 }; 311 312 struct ieee80211_if_vlan { 313 struct list_head list; /* write-protected with RTNL and local->mtx */ 314 315 /* used for all tx if the VLAN is configured to 4-addr mode */ 316 struct sta_info __rcu *sta; 317 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 318 }; 319 320 struct mesh_stats { 321 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 322 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 323 __u32 fwded_frames; /* Mesh total forwarded frames */ 324 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 325 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 326 }; 327 328 #define PREQ_Q_F_START 0x1 329 #define PREQ_Q_F_REFRESH 0x2 330 struct mesh_preq_queue { 331 struct list_head list; 332 u8 dst[ETH_ALEN]; 333 u8 flags; 334 }; 335 336 struct ieee80211_roc_work { 337 struct list_head list; 338 339 struct ieee80211_sub_if_data *sdata; 340 341 struct ieee80211_channel *chan; 342 343 bool started, abort, hw_begun, notified; 344 bool on_channel; 345 346 unsigned long start_time; 347 348 u32 duration, req_duration; 349 struct sk_buff *frame; 350 u64 cookie, mgmt_tx_cookie; 351 enum ieee80211_roc_type type; 352 }; 353 354 /* flags used in struct ieee80211_if_managed.flags */ 355 enum ieee80211_sta_flags { 356 IEEE80211_STA_CONNECTION_POLL = BIT(1), 357 IEEE80211_STA_CONTROL_PORT = BIT(2), 358 IEEE80211_STA_MFP_ENABLED = BIT(6), 359 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 360 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 361 IEEE80211_STA_ENABLE_RRM = BIT(15), 362 }; 363 364 typedef u32 __bitwise ieee80211_conn_flags_t; 365 366 enum ieee80211_conn_flags { 367 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0), 368 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1), 369 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2), 370 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3), 371 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4), 372 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5), 373 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6), 374 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7), 375 }; 376 377 struct ieee80211_mgd_auth_data { 378 struct cfg80211_bss *bss; 379 unsigned long timeout; 380 int tries; 381 u16 algorithm, expected_transaction; 382 383 u8 key[WLAN_KEY_LEN_WEP104]; 384 u8 key_len, key_idx; 385 bool done, waiting; 386 bool peer_confirmed; 387 bool timeout_started; 388 int link_id; 389 390 u8 ap_addr[ETH_ALEN] __aligned(2); 391 392 u16 sae_trans, sae_status; 393 size_t data_len; 394 u8 data[]; 395 }; 396 397 struct ieee80211_mgd_assoc_data { 398 struct { 399 struct cfg80211_bss *bss; 400 401 u8 addr[ETH_ALEN] __aligned(2); 402 403 u8 ap_ht_param; 404 405 struct ieee80211_vht_cap ap_vht_cap; 406 407 size_t elems_len; 408 u8 *elems; /* pointing to inside ie[] below */ 409 410 ieee80211_conn_flags_t conn_flags; 411 412 u16 status; 413 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 414 415 u8 ap_addr[ETH_ALEN] __aligned(2); 416 417 /* this is for a workaround, so we use it only for non-MLO */ 418 const u8 *supp_rates; 419 u8 supp_rates_len; 420 421 unsigned long timeout; 422 int tries; 423 424 u8 prev_ap_addr[ETH_ALEN]; 425 u8 ssid[IEEE80211_MAX_SSID_LEN]; 426 u8 ssid_len; 427 bool wmm, uapsd; 428 bool need_beacon; 429 bool synced; 430 bool timeout_started; 431 bool s1g; 432 433 unsigned int assoc_link_id; 434 435 u8 fils_nonces[2 * FILS_NONCE_LEN]; 436 u8 fils_kek[FILS_MAX_KEK_LEN]; 437 size_t fils_kek_len; 438 439 size_t ie_len; 440 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 441 u8 ie[]; 442 }; 443 444 struct ieee80211_sta_tx_tspec { 445 /* timestamp of the first packet in the time slice */ 446 unsigned long time_slice_start; 447 448 u32 admitted_time; /* in usecs, unlike over the air */ 449 u8 tsid; 450 s8 up; /* signed to be able to invalidate with -1 during teardown */ 451 452 /* consumed TX time in microseconds in the time slice */ 453 u32 consumed_tx_time; 454 enum { 455 TX_TSPEC_ACTION_NONE = 0, 456 TX_TSPEC_ACTION_DOWNGRADE, 457 TX_TSPEC_ACTION_STOP_DOWNGRADE, 458 } action; 459 bool downgraded; 460 }; 461 462 DECLARE_EWMA(beacon_signal, 4, 4) 463 464 struct ieee80211_if_managed { 465 struct timer_list timer; 466 struct timer_list conn_mon_timer; 467 struct timer_list bcn_mon_timer; 468 struct work_struct monitor_work; 469 struct work_struct beacon_connection_loss_work; 470 struct work_struct csa_connection_drop_work; 471 472 unsigned long beacon_timeout; 473 unsigned long probe_timeout; 474 int probe_send_count; 475 bool nullfunc_failed; 476 u8 connection_loss:1, 477 driver_disconnect:1, 478 reconnect:1, 479 associated:1; 480 481 struct ieee80211_mgd_auth_data *auth_data; 482 struct ieee80211_mgd_assoc_data *assoc_data; 483 484 bool powersave; /* powersave requested for this iface */ 485 bool broken_ap; /* AP is broken -- turn off powersave */ 486 487 unsigned int flags; 488 489 bool status_acked; 490 bool status_received; 491 __le16 status_fc; 492 493 enum { 494 IEEE80211_MFP_DISABLED, 495 IEEE80211_MFP_OPTIONAL, 496 IEEE80211_MFP_REQUIRED 497 } mfp; /* management frame protection */ 498 499 /* 500 * Bitmask of enabled u-apsd queues, 501 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 502 * to take effect. 503 */ 504 unsigned int uapsd_queues; 505 506 /* 507 * Maximum number of buffered frames AP can deliver during a 508 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 509 * Needs a new association to take effect. 510 */ 511 unsigned int uapsd_max_sp_len; 512 513 u8 use_4addr; 514 515 /* 516 * State variables for keeping track of RSSI of the AP currently 517 * connected to and informing driver when RSSI has gone 518 * below/above a certain threshold. 519 */ 520 int rssi_min_thold, rssi_max_thold; 521 522 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 523 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 524 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 525 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 526 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 527 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 528 529 /* TDLS support */ 530 u8 tdls_peer[ETH_ALEN] __aligned(2); 531 struct delayed_work tdls_peer_del_work; 532 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 533 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 534 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 535 bool tdls_wider_bw_prohibited; 536 537 /* WMM-AC TSPEC support */ 538 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 539 /* Use a separate work struct so that we can do something here 540 * while the sdata->work is flushing the queues, for example. 541 * otherwise, in scenarios where we hardly get any traffic out 542 * on the BE queue, but there's a lot of VO traffic, we might 543 * get stuck in a downgraded situation and flush takes forever. 544 */ 545 struct delayed_work tx_tspec_wk; 546 547 /* Information elements from the last transmitted (Re)Association 548 * Request frame. 549 */ 550 u8 *assoc_req_ies; 551 size_t assoc_req_ies_len; 552 }; 553 554 struct ieee80211_if_ibss { 555 struct timer_list timer; 556 struct work_struct csa_connection_drop_work; 557 558 unsigned long last_scan_completed; 559 560 u32 basic_rates; 561 562 bool fixed_bssid; 563 bool fixed_channel; 564 bool privacy; 565 566 bool control_port; 567 bool userspace_handles_dfs; 568 569 u8 bssid[ETH_ALEN] __aligned(2); 570 u8 ssid[IEEE80211_MAX_SSID_LEN]; 571 u8 ssid_len, ie_len; 572 u8 *ie; 573 struct cfg80211_chan_def chandef; 574 575 unsigned long ibss_join_req; 576 /* probe response/beacon for IBSS */ 577 struct beacon_data __rcu *presp; 578 579 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 580 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 581 582 spinlock_t incomplete_lock; 583 struct list_head incomplete_stations; 584 585 enum { 586 IEEE80211_IBSS_MLME_SEARCH, 587 IEEE80211_IBSS_MLME_JOINED, 588 } state; 589 }; 590 591 /** 592 * struct ieee80211_if_ocb - OCB mode state 593 * 594 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 595 * @wrkq_flags: OCB deferred task action 596 * @incomplete_lock: delayed STA insertion lock 597 * @incomplete_stations: list of STAs waiting for delayed insertion 598 * @joined: indication if the interface is connected to an OCB network 599 */ 600 struct ieee80211_if_ocb { 601 struct timer_list housekeeping_timer; 602 unsigned long wrkq_flags; 603 604 spinlock_t incomplete_lock; 605 struct list_head incomplete_stations; 606 607 bool joined; 608 }; 609 610 /** 611 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 612 * 613 * these declarations define the interface, which enables 614 * vendor-specific mesh synchronization 615 * 616 */ 617 struct ieee802_11_elems; 618 struct ieee80211_mesh_sync_ops { 619 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 620 struct ieee80211_mgmt *mgmt, unsigned int len, 621 const struct ieee80211_meshconf_ie *mesh_cfg, 622 struct ieee80211_rx_status *rx_status); 623 624 /* should be called with beacon_data under RCU read lock */ 625 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 626 struct beacon_data *beacon); 627 /* add other framework functions here */ 628 }; 629 630 struct mesh_csa_settings { 631 struct rcu_head rcu_head; 632 struct cfg80211_csa_settings settings; 633 }; 634 635 /** 636 * struct mesh_table 637 * 638 * @known_gates: list of known mesh gates and their mpaths by the station. The 639 * gate's mpath may or may not be resolved and active. 640 * @gates_lock: protects updates to known_gates 641 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 642 * @walk_head: linked list containing all mesh_path objects 643 * @walk_lock: lock protecting walk_head 644 * @entries: number of entries in the table 645 */ 646 struct mesh_table { 647 struct hlist_head known_gates; 648 spinlock_t gates_lock; 649 struct rhashtable rhead; 650 struct hlist_head walk_head; 651 spinlock_t walk_lock; 652 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 653 }; 654 655 /** 656 * struct mesh_tx_cache - mesh fast xmit header cache 657 * 658 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key 659 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects 660 * @walk_lock: lock protecting walk_head and rht 661 */ 662 struct mesh_tx_cache { 663 struct rhashtable rht; 664 struct hlist_head walk_head; 665 spinlock_t walk_lock; 666 }; 667 668 struct ieee80211_if_mesh { 669 struct timer_list housekeeping_timer; 670 struct timer_list mesh_path_timer; 671 struct timer_list mesh_path_root_timer; 672 673 unsigned long wrkq_flags; 674 unsigned long mbss_changed; 675 676 bool userspace_handles_dfs; 677 678 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 679 size_t mesh_id_len; 680 /* Active Path Selection Protocol Identifier */ 681 u8 mesh_pp_id; 682 /* Active Path Selection Metric Identifier */ 683 u8 mesh_pm_id; 684 /* Congestion Control Mode Identifier */ 685 u8 mesh_cc_id; 686 /* Synchronization Protocol Identifier */ 687 u8 mesh_sp_id; 688 /* Authentication Protocol Identifier */ 689 u8 mesh_auth_id; 690 /* Local mesh Sequence Number */ 691 u32 sn; 692 /* Last used PREQ ID */ 693 u32 preq_id; 694 atomic_t mpaths; 695 /* Timestamp of last SN update */ 696 unsigned long last_sn_update; 697 /* Time when it's ok to send next PERR */ 698 unsigned long next_perr; 699 /* Timestamp of last PREQ sent */ 700 unsigned long last_preq; 701 struct mesh_rmc *rmc; 702 spinlock_t mesh_preq_queue_lock; 703 struct mesh_preq_queue preq_queue; 704 int preq_queue_len; 705 struct mesh_stats mshstats; 706 struct mesh_config mshcfg; 707 atomic_t estab_plinks; 708 atomic_t mesh_seqnum; 709 bool accepting_plinks; 710 int num_gates; 711 struct beacon_data __rcu *beacon; 712 const u8 *ie; 713 u8 ie_len; 714 enum { 715 IEEE80211_MESH_SEC_NONE = 0x0, 716 IEEE80211_MESH_SEC_AUTHED = 0x1, 717 IEEE80211_MESH_SEC_SECURED = 0x2, 718 } security; 719 bool user_mpm; 720 /* Extensible Synchronization Framework */ 721 const struct ieee80211_mesh_sync_ops *sync_ops; 722 s64 sync_offset_clockdrift_max; 723 spinlock_t sync_offset_lock; 724 /* mesh power save */ 725 enum nl80211_mesh_power_mode nonpeer_pm; 726 int ps_peers_light_sleep; 727 int ps_peers_deep_sleep; 728 struct ps_data ps; 729 /* Channel Switching Support */ 730 struct mesh_csa_settings __rcu *csa; 731 enum { 732 IEEE80211_MESH_CSA_ROLE_NONE, 733 IEEE80211_MESH_CSA_ROLE_INIT, 734 IEEE80211_MESH_CSA_ROLE_REPEATER, 735 } csa_role; 736 u8 chsw_ttl; 737 u16 pre_value; 738 739 /* offset from skb->data while building IE */ 740 int meshconf_offset; 741 742 struct mesh_table mesh_paths; 743 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 744 int mesh_paths_generation; 745 int mpp_paths_generation; 746 struct mesh_tx_cache tx_cache; 747 }; 748 749 #ifdef CONFIG_MAC80211_MESH 750 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 751 do { (msh)->mshstats.name++; } while (0) 752 #else 753 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 754 do { } while (0) 755 #endif 756 757 /** 758 * enum ieee80211_sub_if_data_flags - virtual interface flags 759 * 760 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 761 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 762 * associated stations and deliver multicast frames both 763 * back to wireless media and to the local net stack. 764 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 765 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 766 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 767 * recovery 768 */ 769 enum ieee80211_sub_if_data_flags { 770 IEEE80211_SDATA_ALLMULTI = BIT(0), 771 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 772 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 773 IEEE80211_SDATA_IN_DRIVER = BIT(5), 774 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 775 }; 776 777 /** 778 * enum ieee80211_sdata_state_bits - virtual interface state bits 779 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 780 * mirrors netif_running() but is separate for interface type 781 * change handling while the interface is up 782 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 783 * mode, so queues are stopped 784 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 785 * to offchannel, reset when offchannel returns 786 */ 787 enum ieee80211_sdata_state_bits { 788 SDATA_STATE_RUNNING, 789 SDATA_STATE_OFFCHANNEL, 790 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 791 }; 792 793 /** 794 * enum ieee80211_chanctx_mode - channel context configuration mode 795 * 796 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 797 * multiple interfaces 798 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 799 * only by a single interface. This can be used for example for 800 * non-fixed channel IBSS. 801 */ 802 enum ieee80211_chanctx_mode { 803 IEEE80211_CHANCTX_SHARED, 804 IEEE80211_CHANCTX_EXCLUSIVE 805 }; 806 807 /** 808 * enum ieee80211_chanctx_replace_state - channel context replacement state 809 * 810 * This is used for channel context in-place reservations that require channel 811 * context switch/swap. 812 * 813 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 814 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 815 * by a (not yet registered) channel context pointed by %replace_ctx. 816 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 817 * replaces an existing channel context pointed to by %replace_ctx. 818 */ 819 enum ieee80211_chanctx_replace_state { 820 IEEE80211_CHANCTX_REPLACE_NONE, 821 IEEE80211_CHANCTX_WILL_BE_REPLACED, 822 IEEE80211_CHANCTX_REPLACES_OTHER, 823 }; 824 825 struct ieee80211_chanctx { 826 struct list_head list; 827 struct rcu_head rcu_head; 828 829 struct list_head assigned_links; 830 struct list_head reserved_links; 831 832 enum ieee80211_chanctx_replace_state replace_state; 833 struct ieee80211_chanctx *replace_ctx; 834 835 enum ieee80211_chanctx_mode mode; 836 bool driver_present; 837 838 struct ieee80211_chanctx_conf conf; 839 }; 840 841 struct mac80211_qos_map { 842 struct cfg80211_qos_map qos_map; 843 struct rcu_head rcu_head; 844 }; 845 846 enum txq_info_flags { 847 IEEE80211_TXQ_STOP, 848 IEEE80211_TXQ_AMPDU, 849 IEEE80211_TXQ_NO_AMSDU, 850 IEEE80211_TXQ_DIRTY, 851 }; 852 853 /** 854 * struct txq_info - per tid queue 855 * 856 * @tin: contains packets split into multiple flows 857 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 858 * a fq_flow which is already owned by a different tin 859 * @def_cvars: codel vars for @def_flow 860 * @frags: used to keep fragments created after dequeue 861 * @schedule_order: used with ieee80211_local->active_txqs 862 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 863 */ 864 struct txq_info { 865 struct fq_tin tin; 866 struct codel_vars def_cvars; 867 struct codel_stats cstats; 868 869 u16 schedule_round; 870 struct list_head schedule_order; 871 872 struct sk_buff_head frags; 873 874 unsigned long flags; 875 876 /* keep last! */ 877 struct ieee80211_txq txq; 878 }; 879 880 struct ieee80211_if_mntr { 881 u32 flags; 882 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 883 884 struct list_head list; 885 }; 886 887 /** 888 * struct ieee80211_if_nan - NAN state 889 * 890 * @conf: current NAN configuration 891 * @func_ids: a bitmap of available instance_id's 892 */ 893 struct ieee80211_if_nan { 894 struct cfg80211_nan_conf conf; 895 896 /* protects function_inst_ids */ 897 spinlock_t func_lock; 898 struct idr function_inst_ids; 899 }; 900 901 struct ieee80211_link_data_managed { 902 u8 bssid[ETH_ALEN] __aligned(2); 903 904 u8 dtim_period; 905 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 906 driver_smps_mode; /* smps mode request */ 907 908 ieee80211_conn_flags_t conn_flags; 909 910 s16 p2p_noa_index; 911 912 bool tdls_chan_switch_prohibited; 913 914 bool have_beacon; 915 bool tracking_signal_avg; 916 bool disable_wmm_tracking; 917 bool operating_11g_mode; 918 919 bool csa_waiting_bcn; 920 bool csa_ignored_same_chan; 921 struct timer_list chswitch_timer; 922 struct work_struct chswitch_work; 923 924 struct work_struct request_smps_work; 925 bool beacon_crc_valid; 926 u32 beacon_crc; 927 struct ewma_beacon_signal ave_beacon_signal; 928 int last_ave_beacon_signal; 929 930 /* 931 * Number of Beacon frames used in ave_beacon_signal. This can be used 932 * to avoid generating less reliable cqm events that would be based 933 * only on couple of received frames. 934 */ 935 unsigned int count_beacon_signal; 936 937 /* Number of times beacon loss was invoked. */ 938 unsigned int beacon_loss_count; 939 940 /* 941 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 942 * that triggered a cqm event. 0 indicates that no event has been 943 * generated for the current association. 944 */ 945 int last_cqm_event_signal; 946 947 int wmm_last_param_set; 948 int mu_edca_last_param_set; 949 950 struct cfg80211_bss *bss; 951 }; 952 953 struct ieee80211_link_data_ap { 954 struct beacon_data __rcu *beacon; 955 struct probe_resp __rcu *probe_resp; 956 struct fils_discovery_data __rcu *fils_discovery; 957 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 958 959 /* to be used after channel switch. */ 960 struct cfg80211_beacon_data *next_beacon; 961 }; 962 963 struct ieee80211_link_data { 964 struct ieee80211_sub_if_data *sdata; 965 unsigned int link_id; 966 967 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 968 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 969 970 /* multicast keys only */ 971 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 972 NUM_DEFAULT_MGMT_KEYS + 973 NUM_DEFAULT_BEACON_KEYS]; 974 struct ieee80211_key __rcu *default_multicast_key; 975 struct ieee80211_key __rcu *default_mgmt_key; 976 struct ieee80211_key __rcu *default_beacon_key; 977 978 struct work_struct csa_finalize_work; 979 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 980 981 bool operating_11g_mode; 982 983 struct cfg80211_chan_def csa_chandef; 984 985 struct work_struct color_change_finalize_work; 986 struct delayed_work color_collision_detect_work; 987 u64 color_bitmap; 988 989 /* context reservation -- protected with chanctx_mtx */ 990 struct ieee80211_chanctx *reserved_chanctx; 991 struct cfg80211_chan_def reserved_chandef; 992 bool reserved_radar_required; 993 bool reserved_ready; 994 995 u8 needed_rx_chains; 996 enum ieee80211_smps_mode smps_mode; 997 998 int user_power_level; /* in dBm */ 999 int ap_power_level; /* in dBm */ 1000 1001 bool radar_required; 1002 struct delayed_work dfs_cac_timer_work; 1003 1004 union { 1005 struct ieee80211_link_data_managed mgd; 1006 struct ieee80211_link_data_ap ap; 1007 } u; 1008 1009 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 1010 1011 struct ieee80211_bss_conf *conf; 1012 1013 #ifdef CONFIG_MAC80211_DEBUGFS 1014 struct dentry *debugfs_dir; 1015 #endif 1016 }; 1017 1018 struct ieee80211_sub_if_data { 1019 struct list_head list; 1020 1021 struct wireless_dev wdev; 1022 1023 /* keys */ 1024 struct list_head key_list; 1025 1026 /* count for keys needing tailroom space allocation */ 1027 int crypto_tx_tailroom_needed_cnt; 1028 int crypto_tx_tailroom_pending_dec; 1029 struct delayed_work dec_tailroom_needed_wk; 1030 1031 struct net_device *dev; 1032 struct ieee80211_local *local; 1033 1034 unsigned int flags; 1035 1036 unsigned long state; 1037 1038 char name[IFNAMSIZ]; 1039 1040 struct ieee80211_fragment_cache frags; 1041 1042 /* TID bitmap for NoAck policy */ 1043 u16 noack_map; 1044 1045 /* bit field of ACM bits (BIT(802.1D tag)) */ 1046 u8 wmm_acm; 1047 1048 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1049 struct ieee80211_key __rcu *default_unicast_key; 1050 1051 u16 sequence_number; 1052 u16 mld_mcast_seq; 1053 __be16 control_port_protocol; 1054 bool control_port_no_encrypt; 1055 bool control_port_no_preauth; 1056 bool control_port_over_nl80211; 1057 1058 atomic_t num_tx_queued; 1059 struct mac80211_qos_map __rcu *qos_map; 1060 1061 /* used to reconfigure hardware SM PS */ 1062 struct work_struct recalc_smps; 1063 1064 struct work_struct work; 1065 struct sk_buff_head skb_queue; 1066 struct sk_buff_head status_queue; 1067 1068 /* 1069 * AP this belongs to: self in AP mode and 1070 * corresponding AP in VLAN mode, NULL for 1071 * all others (might be needed later in IBSS) 1072 */ 1073 struct ieee80211_if_ap *bss; 1074 1075 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1076 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1077 1078 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1079 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1080 1081 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1082 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1083 1084 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1085 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1086 bool beacon_rate_set; 1087 1088 union { 1089 struct ieee80211_if_ap ap; 1090 struct ieee80211_if_vlan vlan; 1091 struct ieee80211_if_managed mgd; 1092 struct ieee80211_if_ibss ibss; 1093 struct ieee80211_if_mesh mesh; 1094 struct ieee80211_if_ocb ocb; 1095 struct ieee80211_if_mntr mntr; 1096 struct ieee80211_if_nan nan; 1097 } u; 1098 1099 struct ieee80211_link_data deflink; 1100 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1101 1102 /* for ieee80211_set_active_links_async() */ 1103 struct work_struct activate_links_work; 1104 u16 desired_active_links; 1105 1106 #ifdef CONFIG_MAC80211_DEBUGFS 1107 struct { 1108 struct dentry *subdir_stations; 1109 struct dentry *default_unicast_key; 1110 struct dentry *default_multicast_key; 1111 struct dentry *default_mgmt_key; 1112 struct dentry *default_beacon_key; 1113 } debugfs; 1114 #endif 1115 1116 /* must be last, dynamically sized area in this! */ 1117 struct ieee80211_vif vif; 1118 }; 1119 1120 static inline 1121 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1122 { 1123 return container_of(p, struct ieee80211_sub_if_data, vif); 1124 } 1125 1126 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1127 __acquires(&sdata->wdev.mtx) 1128 { 1129 mutex_lock(&sdata->wdev.mtx); 1130 __acquire(&sdata->wdev.mtx); 1131 } 1132 1133 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1134 __releases(&sdata->wdev.mtx) 1135 { 1136 mutex_unlock(&sdata->wdev.mtx); 1137 __release(&sdata->wdev.mtx); 1138 } 1139 1140 #define sdata_dereference(p, sdata) \ 1141 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1142 1143 static inline void 1144 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1145 { 1146 lockdep_assert_held(&sdata->wdev.mtx); 1147 } 1148 1149 static inline int 1150 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width) 1151 { 1152 switch (width) { 1153 case NL80211_CHAN_WIDTH_5: 1154 return 2; 1155 case NL80211_CHAN_WIDTH_10: 1156 return 1; 1157 default: 1158 return 0; 1159 } 1160 } 1161 1162 static inline int 1163 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1164 { 1165 return ieee80211_chanwidth_get_shift(chandef->width); 1166 } 1167 1168 static inline int 1169 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1170 { 1171 struct ieee80211_chanctx_conf *chanctx_conf; 1172 int shift = 0; 1173 1174 rcu_read_lock(); 1175 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 1176 if (chanctx_conf) 1177 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1178 rcu_read_unlock(); 1179 1180 return shift; 1181 } 1182 1183 static inline int 1184 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems, 1185 struct cfg80211_rnr_elems *rnr_elems, 1186 u8 i) 1187 { 1188 int len = 0; 1189 1190 if (!elems || !elems->cnt || i > elems->cnt) 1191 return 0; 1192 1193 if (i < elems->cnt) { 1194 len = elems->elem[i].len; 1195 if (rnr_elems) { 1196 len += rnr_elems->elem[i].len; 1197 for (i = elems->cnt; i < rnr_elems->cnt; i++) 1198 len += rnr_elems->elem[i].len; 1199 } 1200 return len; 1201 } 1202 1203 /* i == elems->cnt, calculate total length of all MBSSID elements */ 1204 for (i = 0; i < elems->cnt; i++) 1205 len += elems->elem[i].len; 1206 1207 if (rnr_elems) { 1208 for (i = 0; i < rnr_elems->cnt; i++) 1209 len += rnr_elems->elem[i].len; 1210 } 1211 1212 return len; 1213 } 1214 1215 enum { 1216 IEEE80211_RX_MSG = 1, 1217 IEEE80211_TX_STATUS_MSG = 2, 1218 }; 1219 1220 enum queue_stop_reason { 1221 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1222 IEEE80211_QUEUE_STOP_REASON_PS, 1223 IEEE80211_QUEUE_STOP_REASON_CSA, 1224 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1225 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1226 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1227 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1228 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1229 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1230 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1231 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1232 1233 IEEE80211_QUEUE_STOP_REASONS, 1234 }; 1235 1236 #ifdef CONFIG_MAC80211_LEDS 1237 struct tpt_led_trigger { 1238 char name[32]; 1239 const struct ieee80211_tpt_blink *blink_table; 1240 unsigned int blink_table_len; 1241 struct timer_list timer; 1242 struct ieee80211_local *local; 1243 unsigned long prev_traffic; 1244 unsigned long tx_bytes, rx_bytes; 1245 unsigned int active, want; 1246 bool running; 1247 }; 1248 #endif 1249 1250 /** 1251 * mac80211 scan flags - currently active scan mode 1252 * 1253 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1254 * well be on the operating channel 1255 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1256 * determine if we are on the operating channel or not 1257 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1258 * channel. This should not interrupt normal traffic. 1259 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1260 * that the scan completed. 1261 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1262 * a scan complete for an aborted scan. 1263 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1264 * cancelled. 1265 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1266 * and could send a probe request after receiving a beacon. 1267 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1268 */ 1269 enum { 1270 SCAN_SW_SCANNING, 1271 SCAN_HW_SCANNING, 1272 SCAN_ONCHANNEL_SCANNING, 1273 SCAN_COMPLETED, 1274 SCAN_ABORTED, 1275 SCAN_HW_CANCELLED, 1276 SCAN_BEACON_WAIT, 1277 SCAN_BEACON_DONE, 1278 }; 1279 1280 /** 1281 * enum mac80211_scan_state - scan state machine states 1282 * 1283 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1284 * determines if we should keep on scanning or switch back to the 1285 * operating channel 1286 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1287 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1288 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1289 * send out data 1290 * @SCAN_RESUME: Resume the scan and scan the next channel 1291 * @SCAN_ABORT: Abort the scan and go back to operating channel 1292 */ 1293 enum mac80211_scan_state { 1294 SCAN_DECISION, 1295 SCAN_SET_CHANNEL, 1296 SCAN_SEND_PROBE, 1297 SCAN_SUSPEND, 1298 SCAN_RESUME, 1299 SCAN_ABORT, 1300 }; 1301 1302 DECLARE_STATIC_KEY_FALSE(aql_disable); 1303 1304 struct ieee80211_local { 1305 /* embed the driver visible part. 1306 * don't cast (use the static inlines below), but we keep 1307 * it first anyway so they become a no-op */ 1308 struct ieee80211_hw hw; 1309 1310 struct fq fq; 1311 struct codel_vars *cvars; 1312 struct codel_params cparams; 1313 1314 /* protects active_txqs and txqi->schedule_order */ 1315 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1316 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1317 u16 schedule_round[IEEE80211_NUM_ACS]; 1318 1319 /* serializes ieee80211_handle_wake_tx_queue */ 1320 spinlock_t handle_wake_tx_queue_lock; 1321 1322 u16 airtime_flags; 1323 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1324 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1325 u32 aql_threshold; 1326 atomic_t aql_total_pending_airtime; 1327 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1328 1329 const struct ieee80211_ops *ops; 1330 1331 /* 1332 * private workqueue to mac80211. mac80211 makes this accessible 1333 * via ieee80211_queue_work() 1334 */ 1335 struct workqueue_struct *workqueue; 1336 1337 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1338 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1339 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1340 spinlock_t queue_stop_reason_lock; 1341 1342 int open_count; 1343 int monitors, cooked_mntrs; 1344 /* number of interfaces with corresponding FIF_ flags */ 1345 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1346 fif_probe_req; 1347 bool probe_req_reg; 1348 bool rx_mcast_action_reg; 1349 unsigned int filter_flags; /* FIF_* */ 1350 1351 bool wiphy_ciphers_allocated; 1352 1353 bool use_chanctx; 1354 1355 /* protects the aggregated multicast list and filter calls */ 1356 spinlock_t filter_lock; 1357 1358 /* used for uploading changed mc list */ 1359 struct work_struct reconfig_filter; 1360 1361 /* aggregated multicast list */ 1362 struct netdev_hw_addr_list mc_list; 1363 1364 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1365 1366 /* 1367 * suspended is true if we finished all the suspend _and_ we have 1368 * not yet come up from resume. This is to be used by mac80211 1369 * to ensure driver sanity during suspend and mac80211's own 1370 * sanity. It can eventually be used for WoW as well. 1371 */ 1372 bool suspended; 1373 1374 /* suspending is true during the whole suspend process */ 1375 bool suspending; 1376 1377 /* 1378 * Resuming is true while suspended, but when we're reprogramming the 1379 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1380 * again even though some other parts of the stack are still suspended 1381 * and we still drop received frames to avoid waking the stack. 1382 */ 1383 bool resuming; 1384 1385 /* 1386 * quiescing is true during the suspend process _only_ to 1387 * ease timer cancelling etc. 1388 */ 1389 bool quiescing; 1390 1391 /* device is started */ 1392 bool started; 1393 1394 /* device is during a HW reconfig */ 1395 bool in_reconfig; 1396 1397 /* wowlan is enabled -- don't reconfig on resume */ 1398 bool wowlan; 1399 1400 struct work_struct radar_detected_work; 1401 1402 /* number of RX chains the hardware has */ 1403 u8 rx_chains; 1404 1405 /* bitmap of which sbands were copied */ 1406 u8 sband_allocated; 1407 1408 int tx_headroom; /* required headroom for hardware/radiotap */ 1409 1410 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1411 * added to skb_queue will be processed, but frames in 1412 * skb_queue_unreliable may be dropped if the total length of these 1413 * queues increases over the limit. */ 1414 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1415 struct tasklet_struct tasklet; 1416 struct sk_buff_head skb_queue; 1417 struct sk_buff_head skb_queue_unreliable; 1418 1419 spinlock_t rx_path_lock; 1420 1421 /* Station data */ 1422 /* 1423 * The mutex only protects the list, hash table and 1424 * counter, reads are done with RCU. 1425 */ 1426 struct mutex sta_mtx; 1427 spinlock_t tim_lock; 1428 unsigned long num_sta; 1429 struct list_head sta_list; 1430 struct rhltable sta_hash; 1431 struct rhltable link_sta_hash; 1432 struct timer_list sta_cleanup; 1433 int sta_generation; 1434 1435 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1436 struct tasklet_struct tx_pending_tasklet; 1437 struct tasklet_struct wake_txqs_tasklet; 1438 1439 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1440 1441 /* number of interfaces with allmulti RX */ 1442 atomic_t iff_allmultis; 1443 1444 struct rate_control_ref *rate_ctrl; 1445 1446 struct arc4_ctx wep_tx_ctx; 1447 struct arc4_ctx wep_rx_ctx; 1448 u32 wep_iv; 1449 1450 /* see iface.c */ 1451 struct list_head interfaces; 1452 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1453 struct mutex iflist_mtx; 1454 1455 /* 1456 * Key mutex, protects sdata's key_list and sta_info's 1457 * key pointers and ptk_idx (write access, they're RCU.) 1458 */ 1459 struct mutex key_mtx; 1460 1461 /* mutex for scan and work locking */ 1462 struct mutex mtx; 1463 1464 /* Scanning and BSS list */ 1465 unsigned long scanning; 1466 struct cfg80211_ssid scan_ssid; 1467 struct cfg80211_scan_request *int_scan_req; 1468 struct cfg80211_scan_request __rcu *scan_req; 1469 struct ieee80211_scan_request *hw_scan_req; 1470 struct cfg80211_chan_def scan_chandef; 1471 enum nl80211_band hw_scan_band; 1472 int scan_channel_idx; 1473 int scan_ies_len; 1474 int hw_scan_ies_bufsize; 1475 struct cfg80211_scan_info scan_info; 1476 1477 struct work_struct sched_scan_stopped_work; 1478 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1479 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1480 u8 scan_addr[ETH_ALEN]; 1481 1482 unsigned long leave_oper_channel_time; 1483 enum mac80211_scan_state next_scan_state; 1484 struct delayed_work scan_work; 1485 struct ieee80211_sub_if_data __rcu *scan_sdata; 1486 /* For backward compatibility only -- do not use */ 1487 struct cfg80211_chan_def _oper_chandef; 1488 1489 /* Temporary remain-on-channel for off-channel operations */ 1490 struct ieee80211_channel *tmp_channel; 1491 1492 /* channel contexts */ 1493 struct list_head chanctx_list; 1494 struct mutex chanctx_mtx; 1495 1496 #ifdef CONFIG_MAC80211_LEDS 1497 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1498 struct led_trigger tpt_led; 1499 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1500 atomic_t radio_led_active, tpt_led_active; 1501 struct tpt_led_trigger *tpt_led_trigger; 1502 #endif 1503 1504 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1505 /* SNMP counters */ 1506 /* dot11CountersTable */ 1507 u32 dot11TransmittedFragmentCount; 1508 u32 dot11MulticastTransmittedFrameCount; 1509 u32 dot11FailedCount; 1510 u32 dot11RetryCount; 1511 u32 dot11MultipleRetryCount; 1512 u32 dot11FrameDuplicateCount; 1513 u32 dot11ReceivedFragmentCount; 1514 u32 dot11MulticastReceivedFrameCount; 1515 u32 dot11TransmittedFrameCount; 1516 1517 /* TX/RX handler statistics */ 1518 unsigned int tx_handlers_drop; 1519 unsigned int tx_handlers_queued; 1520 unsigned int tx_handlers_drop_wep; 1521 unsigned int tx_handlers_drop_not_assoc; 1522 unsigned int tx_handlers_drop_unauth_port; 1523 unsigned int rx_handlers_drop; 1524 unsigned int rx_handlers_queued; 1525 unsigned int rx_handlers_drop_nullfunc; 1526 unsigned int rx_handlers_drop_defrag; 1527 unsigned int tx_expand_skb_head; 1528 unsigned int tx_expand_skb_head_cloned; 1529 unsigned int rx_expand_skb_head_defrag; 1530 unsigned int rx_handlers_fragments; 1531 unsigned int tx_status_drop; 1532 #define I802_DEBUG_INC(c) (c)++ 1533 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1534 #define I802_DEBUG_INC(c) do { } while (0) 1535 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1536 1537 1538 int total_ps_buffered; /* total number of all buffered unicast and 1539 * multicast packets for power saving stations 1540 */ 1541 1542 bool pspolling; 1543 /* 1544 * PS can only be enabled when we have exactly one managed 1545 * interface (and monitors) in PS, this then points there. 1546 */ 1547 struct ieee80211_sub_if_data *ps_sdata; 1548 struct work_struct dynamic_ps_enable_work; 1549 struct work_struct dynamic_ps_disable_work; 1550 struct timer_list dynamic_ps_timer; 1551 struct notifier_block ifa_notifier; 1552 struct notifier_block ifa6_notifier; 1553 1554 /* 1555 * The dynamic ps timeout configured from user space via WEXT - 1556 * this will override whatever chosen by mac80211 internally. 1557 */ 1558 int dynamic_ps_forced_timeout; 1559 1560 int user_power_level; /* in dBm, for all interfaces */ 1561 1562 enum ieee80211_smps_mode smps_mode; 1563 1564 struct work_struct restart_work; 1565 1566 #ifdef CONFIG_MAC80211_DEBUGFS 1567 struct local_debugfsdentries { 1568 struct dentry *rcdir; 1569 struct dentry *keys; 1570 } debugfs; 1571 bool force_tx_status; 1572 #endif 1573 1574 /* 1575 * Remain-on-channel support 1576 */ 1577 struct delayed_work roc_work; 1578 struct list_head roc_list; 1579 struct work_struct hw_roc_start, hw_roc_done; 1580 unsigned long hw_roc_start_time; 1581 u64 roc_cookie_counter; 1582 1583 struct idr ack_status_frames; 1584 spinlock_t ack_status_lock; 1585 1586 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1587 1588 /* virtual monitor interface */ 1589 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1590 struct cfg80211_chan_def monitor_chandef; 1591 1592 /* extended capabilities provided by mac80211 */ 1593 u8 ext_capa[8]; 1594 }; 1595 1596 static inline struct ieee80211_sub_if_data * 1597 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1598 { 1599 return netdev_priv(dev); 1600 } 1601 1602 static inline struct ieee80211_sub_if_data * 1603 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1604 { 1605 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1606 } 1607 1608 static inline struct ieee80211_supported_band * 1609 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1610 { 1611 struct ieee80211_local *local = sdata->local; 1612 struct ieee80211_chanctx_conf *chanctx_conf; 1613 enum nl80211_band band; 1614 1615 WARN_ON(sdata->vif.valid_links); 1616 1617 rcu_read_lock(); 1618 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1619 1620 if (!chanctx_conf) { 1621 rcu_read_unlock(); 1622 return NULL; 1623 } 1624 1625 band = chanctx_conf->def.chan->band; 1626 rcu_read_unlock(); 1627 1628 return local->hw.wiphy->bands[band]; 1629 } 1630 1631 static inline struct ieee80211_supported_band * 1632 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1633 { 1634 struct ieee80211_local *local = link->sdata->local; 1635 struct ieee80211_chanctx_conf *chanctx_conf; 1636 enum nl80211_band band; 1637 1638 rcu_read_lock(); 1639 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1640 if (!chanctx_conf) { 1641 rcu_read_unlock(); 1642 return NULL; 1643 } 1644 1645 band = chanctx_conf->def.chan->band; 1646 rcu_read_unlock(); 1647 1648 return local->hw.wiphy->bands[band]; 1649 } 1650 1651 /* this struct holds the value parsing from channel switch IE */ 1652 struct ieee80211_csa_ie { 1653 struct cfg80211_chan_def chandef; 1654 u8 mode; 1655 u8 count; 1656 u8 ttl; 1657 u16 pre_value; 1658 u16 reason_code; 1659 u32 max_switch_time; 1660 }; 1661 1662 /* Parsed Information Elements */ 1663 struct ieee802_11_elems { 1664 const u8 *ie_start; 1665 size_t total_len; 1666 u32 crc; 1667 1668 /* pointers to IEs */ 1669 const struct ieee80211_tdls_lnkie *lnk_id; 1670 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1671 const u8 *ext_capab; 1672 const u8 *ssid; 1673 const u8 *supp_rates; 1674 const u8 *ds_params; 1675 const struct ieee80211_tim_ie *tim; 1676 const u8 *rsn; 1677 const u8 *rsnx; 1678 const u8 *erp_info; 1679 const u8 *ext_supp_rates; 1680 const u8 *wmm_info; 1681 const u8 *wmm_param; 1682 const struct ieee80211_ht_cap *ht_cap_elem; 1683 const struct ieee80211_ht_operation *ht_operation; 1684 const struct ieee80211_vht_cap *vht_cap_elem; 1685 const struct ieee80211_vht_operation *vht_operation; 1686 const struct ieee80211_meshconf_ie *mesh_config; 1687 const u8 *he_cap; 1688 const struct ieee80211_he_operation *he_operation; 1689 const struct ieee80211_he_spr *he_spr; 1690 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1691 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1692 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1693 const u8 *uora_element; 1694 const u8 *mesh_id; 1695 const u8 *peering; 1696 const __le16 *awake_window; 1697 const u8 *preq; 1698 const u8 *prep; 1699 const u8 *perr; 1700 const struct ieee80211_rann_ie *rann; 1701 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1702 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1703 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1704 const u8 *max_channel_switch_time; 1705 const u8 *country_elem; 1706 const u8 *pwr_constr_elem; 1707 const u8 *cisco_dtpc_elem; 1708 const struct ieee80211_timeout_interval_ie *timeout_int; 1709 const u8 *opmode_notif; 1710 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1711 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1712 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1713 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1714 const struct ieee80211_bssid_index *bssid_index; 1715 u8 max_bssid_indicator; 1716 u8 dtim_count; 1717 u8 dtim_period; 1718 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1719 const struct ieee80211_s1g_cap *s1g_capab; 1720 const struct ieee80211_s1g_oper_ie *s1g_oper; 1721 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1722 const struct ieee80211_aid_response_ie *aid_resp; 1723 const struct ieee80211_eht_cap_elem *eht_cap; 1724 const struct ieee80211_eht_operation *eht_operation; 1725 const struct ieee80211_multi_link_elem *multi_link; 1726 1727 /* length of them, respectively */ 1728 u8 ext_capab_len; 1729 u8 ssid_len; 1730 u8 supp_rates_len; 1731 u8 tim_len; 1732 u8 rsn_len; 1733 u8 rsnx_len; 1734 u8 ext_supp_rates_len; 1735 u8 wmm_info_len; 1736 u8 wmm_param_len; 1737 u8 he_cap_len; 1738 u8 mesh_id_len; 1739 u8 peering_len; 1740 u8 preq_len; 1741 u8 prep_len; 1742 u8 perr_len; 1743 u8 country_elem_len; 1744 u8 bssid_index_len; 1745 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1746 u8 tx_pwr_env_num; 1747 u8 eht_cap_len; 1748 1749 /* mult-link element can be de-fragmented and thus u8 is not sufficient */ 1750 size_t multi_link_len; 1751 1752 /* 1753 * store the per station profile pointer and length in case that the 1754 * parsing also handled Multi-Link element parsing for a specific link 1755 * ID. 1756 */ 1757 struct ieee80211_mle_per_sta_profile *prof; 1758 size_t sta_prof_len; 1759 1760 /* whether a parse error occurred while retrieving these elements */ 1761 bool parse_error; 1762 1763 /* 1764 * scratch buffer that can be used for various element parsing related 1765 * tasks, e.g., element de-fragmentation etc. 1766 */ 1767 size_t scratch_len; 1768 u8 *scratch_pos; 1769 u8 scratch[]; 1770 }; 1771 1772 static inline struct ieee80211_local *hw_to_local( 1773 struct ieee80211_hw *hw) 1774 { 1775 return container_of(hw, struct ieee80211_local, hw); 1776 } 1777 1778 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1779 { 1780 return container_of(txq, struct txq_info, txq); 1781 } 1782 1783 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1784 { 1785 struct txq_info *txqi = to_txq_info(txq); 1786 1787 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1788 } 1789 1790 static inline bool 1791 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1792 { 1793 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1794 status->flag & RX_FLAG_MACTIME_END); 1795 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1796 RX_FLAG_MACTIME_PLCP_START)); 1797 } 1798 1799 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1800 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1801 1802 /* This function returns the number of multicast stations connected to this 1803 * interface. It returns -1 if that number is not tracked, that is for netdevs 1804 * not in AP or AP_VLAN mode or when using 4addr. 1805 */ 1806 static inline int 1807 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1808 { 1809 if (sdata->vif.type == NL80211_IFTYPE_AP) 1810 return atomic_read(&sdata->u.ap.num_mcast_sta); 1811 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1812 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1813 return -1; 1814 } 1815 1816 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1817 struct ieee80211_rx_status *status, 1818 unsigned int mpdu_len, 1819 unsigned int mpdu_offset); 1820 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1821 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1822 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1823 u64 changed); 1824 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1825 u64 changed); 1826 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1827 struct ieee80211_link_data *link, 1828 u64 changed); 1829 void ieee80211_configure_filter(struct ieee80211_local *local); 1830 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1831 1832 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1833 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1834 u64 *cookie, gfp_t gfp); 1835 1836 void ieee80211_check_fast_rx(struct sta_info *sta); 1837 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1838 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1839 void ieee80211_clear_fast_rx(struct sta_info *sta); 1840 1841 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1842 const u8 *addr, int *out_link_id); 1843 1844 /* STA code */ 1845 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1846 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1847 struct cfg80211_auth_request *req); 1848 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1849 struct cfg80211_assoc_request *req); 1850 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1851 struct cfg80211_deauth_request *req); 1852 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1853 struct cfg80211_disassoc_request *req); 1854 void ieee80211_send_pspoll(struct ieee80211_local *local, 1855 struct ieee80211_sub_if_data *sdata); 1856 void ieee80211_recalc_ps(struct ieee80211_local *local); 1857 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1858 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1859 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1860 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1861 struct sk_buff *skb); 1862 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1863 struct sk_buff *skb); 1864 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1865 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1866 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1867 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1868 __le16 fc, bool acked); 1869 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1870 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1871 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1872 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1873 u8 reason, bool tx); 1874 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1875 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1876 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link); 1877 1878 /* IBSS code */ 1879 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1880 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1881 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1882 const u8 *bssid, const u8 *addr, u32 supp_rates); 1883 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1884 struct cfg80211_ibss_params *params); 1885 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1886 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1887 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1888 struct sk_buff *skb); 1889 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1890 struct cfg80211_csa_settings *csa_settings); 1891 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1892 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1893 1894 /* OCB code */ 1895 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1896 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1897 const u8 *bssid, const u8 *addr, u32 supp_rates); 1898 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1899 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1900 struct ocb_setup *setup); 1901 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1902 1903 /* mesh code */ 1904 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1905 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1906 struct sk_buff *skb); 1907 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1908 struct cfg80211_csa_settings *csa_settings); 1909 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1910 1911 /* scan/BSS handling */ 1912 void ieee80211_scan_work(struct work_struct *work); 1913 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1914 const u8 *ssid, u8 ssid_len, 1915 struct ieee80211_channel **channels, 1916 unsigned int n_channels, 1917 enum nl80211_bss_scan_width scan_width); 1918 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1919 struct cfg80211_scan_request *req); 1920 void ieee80211_scan_cancel(struct ieee80211_local *local); 1921 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1922 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1923 1924 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1925 struct ieee80211_bss * 1926 ieee80211_bss_info_update(struct ieee80211_local *local, 1927 struct ieee80211_rx_status *rx_status, 1928 struct ieee80211_mgmt *mgmt, 1929 size_t len, 1930 struct ieee80211_channel *channel); 1931 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1932 struct ieee80211_bss *bss); 1933 1934 /* scheduled scan handling */ 1935 int 1936 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1937 struct cfg80211_sched_scan_request *req); 1938 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1939 struct cfg80211_sched_scan_request *req); 1940 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1941 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1942 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1943 1944 /* off-channel/mgmt-tx */ 1945 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1946 void ieee80211_offchannel_return(struct ieee80211_local *local); 1947 void ieee80211_roc_setup(struct ieee80211_local *local); 1948 void ieee80211_start_next_roc(struct ieee80211_local *local); 1949 void ieee80211_roc_purge(struct ieee80211_local *local, 1950 struct ieee80211_sub_if_data *sdata); 1951 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1952 struct ieee80211_channel *chan, 1953 unsigned int duration, u64 *cookie); 1954 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1955 struct wireless_dev *wdev, u64 cookie); 1956 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1957 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1958 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1959 struct wireless_dev *wdev, u64 cookie); 1960 1961 /* channel switch handling */ 1962 void ieee80211_csa_finalize_work(struct work_struct *work); 1963 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1964 struct cfg80211_csa_settings *params); 1965 1966 /* color change handling */ 1967 void ieee80211_color_change_finalize_work(struct work_struct *work); 1968 void ieee80211_color_collision_detection_work(struct work_struct *work); 1969 1970 /* interface handling */ 1971 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1972 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1973 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \ 1974 NETIF_F_HW_TC) 1975 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1976 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1977 MAC80211_SUPPORTED_FEATURES_RX) 1978 1979 int ieee80211_iface_init(void); 1980 void ieee80211_iface_exit(void); 1981 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1982 unsigned char name_assign_type, 1983 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1984 struct vif_params *params); 1985 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1986 enum nl80211_iftype type); 1987 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1988 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1989 u32 ieee80211_idle_off(struct ieee80211_local *local); 1990 void ieee80211_recalc_idle(struct ieee80211_local *local); 1991 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1992 const int offset); 1993 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1994 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1995 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1996 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1997 1998 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1999 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 2000 bool update_bss); 2001 void ieee80211_recalc_offload(struct ieee80211_local *local); 2002 2003 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 2004 { 2005 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 2006 } 2007 2008 /* link handling */ 2009 void ieee80211_link_setup(struct ieee80211_link_data *link); 2010 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, 2011 int link_id, 2012 struct ieee80211_link_data *link, 2013 struct ieee80211_bss_conf *link_conf); 2014 void ieee80211_link_stop(struct ieee80211_link_data *link); 2015 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 2016 u16 new_links); 2017 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata); 2018 2019 /* tx handling */ 2020 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 2021 void ieee80211_tx_pending(struct tasklet_struct *t); 2022 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 2023 struct net_device *dev); 2024 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 2025 struct net_device *dev); 2026 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 2027 struct net_device *dev); 2028 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 2029 struct net_device *dev, 2030 u32 info_flags, 2031 u32 ctrl_flags, 2032 u64 *cookie); 2033 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 2034 struct sk_buff_head *skbs); 2035 struct sk_buff * 2036 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2037 struct sk_buff *skb, u32 info_flags); 2038 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2039 int retry_count, int shift, bool send_to_cooked, 2040 struct ieee80211_tx_status *status); 2041 2042 void ieee80211_check_fast_xmit(struct sta_info *sta); 2043 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2044 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2045 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2046 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2047 const u8 *buf, size_t len, 2048 const u8 *dest, __be16 proto, bool unencrypted, 2049 int link_id, u64 *cookie); 2050 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2051 const u8 *buf, size_t len); 2052 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, 2053 struct sta_info *sta, 2054 struct ieee80211_fast_tx *fast_tx, 2055 struct sk_buff *skb, bool ampdu, 2056 const u8 *da, const u8 *sa); 2057 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, 2058 struct sta_info *sta, struct sk_buff *skb); 2059 2060 /* HT */ 2061 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2062 struct ieee80211_sta_ht_cap *ht_cap); 2063 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2064 struct ieee80211_supported_band *sband, 2065 const struct ieee80211_ht_cap *ht_cap_ie, 2066 struct link_sta_info *link_sta); 2067 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2068 const u8 *da, u16 tid, 2069 u16 initiator, u16 reason_code); 2070 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2071 enum ieee80211_smps_mode smps, const u8 *da, 2072 const u8 *bssid); 2073 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2074 enum ieee80211_smps_mode smps_mode_new); 2075 2076 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2077 u16 initiator, u16 reason, bool stop); 2078 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2079 u16 initiator, u16 reason, bool stop); 2080 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2081 u8 dialog_token, u16 timeout, 2082 u16 start_seq_num, u16 ba_policy, u16 tid, 2083 u16 buf_size, bool tx, bool auto_seq, 2084 const struct ieee80211_addba_ext_ie *addbaext); 2085 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2086 enum ieee80211_agg_stop_reason reason); 2087 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2088 struct sta_info *sta, 2089 struct ieee80211_mgmt *mgmt, size_t len); 2090 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2091 struct sta_info *sta, 2092 struct ieee80211_mgmt *mgmt, 2093 size_t len); 2094 void ieee80211_process_addba_request(struct ieee80211_local *local, 2095 struct sta_info *sta, 2096 struct ieee80211_mgmt *mgmt, 2097 size_t len); 2098 2099 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2100 enum ieee80211_agg_stop_reason reason); 2101 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2102 enum ieee80211_agg_stop_reason reason); 2103 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2104 struct tid_ampdu_tx *tid_tx); 2105 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2106 struct tid_ampdu_tx *tid_tx); 2107 void ieee80211_ba_session_work(struct work_struct *work); 2108 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2109 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2110 2111 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2112 enum nl80211_smps_mode 2113 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2114 2115 /* VHT */ 2116 void 2117 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2118 struct ieee80211_supported_band *sband, 2119 const struct ieee80211_vht_cap *vht_cap_ie, 2120 struct link_sta_info *link_sta); 2121 enum ieee80211_sta_rx_bandwidth 2122 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta); 2123 enum ieee80211_sta_rx_bandwidth 2124 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta); 2125 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta); 2126 enum ieee80211_sta_rx_bandwidth 2127 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2128 enum nl80211_chan_width 2129 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2130 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2131 struct ieee80211_link_data *link, 2132 struct ieee80211_mgmt *mgmt); 2133 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2134 struct link_sta_info *sta, 2135 u8 opmode, enum nl80211_band band); 2136 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2137 struct link_sta_info *sta, 2138 u8 opmode, enum nl80211_band band); 2139 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2140 struct ieee80211_sta_vht_cap *vht_cap); 2141 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2142 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2143 enum nl80211_chan_width 2144 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2145 2146 /* HE */ 2147 void 2148 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2149 struct ieee80211_supported_band *sband, 2150 const u8 *he_cap_ie, u8 he_cap_len, 2151 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2152 struct link_sta_info *link_sta); 2153 void 2154 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2155 const struct ieee80211_he_spr *he_spr_ie_elem); 2156 2157 void 2158 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2159 const struct ieee80211_he_operation *he_op_ie_elem); 2160 2161 /* S1G */ 2162 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2163 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2164 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2165 struct sk_buff *skb); 2166 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2167 struct sk_buff *skb); 2168 2169 /* Spectrum management */ 2170 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2171 struct ieee80211_mgmt *mgmt, 2172 size_t len); 2173 /** 2174 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2175 * @sdata: the sdata of the interface which has received the frame 2176 * @elems: parsed 802.11 elements received with the frame 2177 * @current_band: indicates the current band 2178 * @vht_cap_info: VHT capabilities of the transmitter 2179 * @conn_flags: contains information about own capabilities and restrictions 2180 * to decide which channel switch announcements can be accepted, using 2181 * flags from &enum ieee80211_conn_flags. 2182 * @bssid: the currently connected bssid (for reporting) 2183 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2184 All of them will be filled with if success only. 2185 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2186 */ 2187 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2188 struct ieee802_11_elems *elems, 2189 enum nl80211_band current_band, 2190 u32 vht_cap_info, 2191 ieee80211_conn_flags_t conn_flags, u8 *bssid, 2192 struct ieee80211_csa_ie *csa_ie); 2193 2194 /* Suspend/resume and hw reconfiguration */ 2195 int ieee80211_reconfig(struct ieee80211_local *local); 2196 void ieee80211_stop_device(struct ieee80211_local *local); 2197 2198 int __ieee80211_suspend(struct ieee80211_hw *hw, 2199 struct cfg80211_wowlan *wowlan); 2200 2201 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2202 { 2203 struct ieee80211_local *local = hw_to_local(hw); 2204 2205 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2206 !test_bit(SCAN_COMPLETED, &local->scanning), 2207 "%s: resume with hardware scan still in progress\n", 2208 wiphy_name(hw->wiphy)); 2209 2210 return ieee80211_reconfig(hw_to_local(hw)); 2211 } 2212 2213 /* utility functions/constants */ 2214 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2215 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2216 int rate, int erp, int short_preamble, 2217 int shift); 2218 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2219 struct ieee80211_tx_queue_params *qparam, 2220 int ac); 2221 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2222 bool bss_notify, bool enable_qos); 2223 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2224 struct sta_info *sta, struct sk_buff *skb); 2225 2226 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2227 struct sk_buff *skb, int tid, int link_id, 2228 enum nl80211_band band); 2229 2230 /* sta_out needs to be checked for ERR_PTR() before using */ 2231 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2232 struct sk_buff *skb, 2233 struct sta_info **sta_out); 2234 2235 static inline void 2236 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2237 struct sk_buff *skb, int tid, 2238 enum nl80211_band band) 2239 { 2240 rcu_read_lock(); 2241 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2242 rcu_read_unlock(); 2243 } 2244 2245 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2246 struct sk_buff *skb, int tid, int link_id); 2247 2248 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2249 struct sk_buff *skb) 2250 { 2251 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2252 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2253 } 2254 2255 /** 2256 * struct ieee80211_elems_parse_params - element parsing parameters 2257 * @start: pointer to the elements 2258 * @len: length of the elements 2259 * @action: %true if the elements came from an action frame 2260 * @filter: bitmap of element IDs to filter out while calculating 2261 * the element CRC 2262 * @crc: CRC starting value 2263 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2264 * represent a non-transmitting BSS in which case the data 2265 * for that non-transmitting BSS is returned 2266 * @link_id: the link ID to parse elements for, if a STA profile 2267 * is present in the multi-link element, or -1 to ignore; 2268 * note that the code currently assumes parsing an association 2269 * (or re-association) response frame if this is given 2270 * @from_ap: frame is received from an AP (currently used only 2271 * for EHT capabilities parsing) 2272 * @scratch_len: if non zero, specifies the requested length of the scratch 2273 * buffer; otherwise, 'len' is used. 2274 */ 2275 struct ieee80211_elems_parse_params { 2276 const u8 *start; 2277 size_t len; 2278 bool action; 2279 u64 filter; 2280 u32 crc; 2281 struct cfg80211_bss *bss; 2282 int link_id; 2283 bool from_ap; 2284 size_t scratch_len; 2285 }; 2286 2287 struct ieee802_11_elems * 2288 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2289 2290 static inline struct ieee802_11_elems * 2291 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2292 u64 filter, u32 crc, 2293 struct cfg80211_bss *bss) 2294 { 2295 struct ieee80211_elems_parse_params params = { 2296 .start = start, 2297 .len = len, 2298 .action = action, 2299 .filter = filter, 2300 .crc = crc, 2301 .bss = bss, 2302 .link_id = -1, 2303 }; 2304 2305 return ieee802_11_parse_elems_full(¶ms); 2306 } 2307 2308 static inline struct ieee802_11_elems * 2309 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2310 struct cfg80211_bss *bss) 2311 { 2312 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2313 } 2314 2315 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos); 2316 2317 extern const int ieee802_1d_to_ac[8]; 2318 2319 static inline int ieee80211_ac_from_tid(int tid) 2320 { 2321 return ieee802_1d_to_ac[tid & 7]; 2322 } 2323 2324 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2325 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2326 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2327 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2328 struct ieee80211_sub_if_data *sdata, 2329 bool powersave); 2330 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2331 struct ieee80211_sub_if_data *sdata); 2332 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2333 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2334 2335 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2336 unsigned long queues, 2337 enum queue_stop_reason reason, 2338 bool refcounted); 2339 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2340 struct ieee80211_sub_if_data *sdata, 2341 enum queue_stop_reason reason); 2342 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2343 struct ieee80211_sub_if_data *sdata, 2344 enum queue_stop_reason reason); 2345 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2346 unsigned long queues, 2347 enum queue_stop_reason reason, 2348 bool refcounted); 2349 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2350 enum queue_stop_reason reason, 2351 bool refcounted); 2352 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2353 enum queue_stop_reason reason, 2354 bool refcounted); 2355 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2356 struct sk_buff *skb); 2357 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2358 struct sk_buff_head *skbs); 2359 void ieee80211_flush_queues(struct ieee80211_local *local, 2360 struct ieee80211_sub_if_data *sdata, bool drop); 2361 void __ieee80211_flush_queues(struct ieee80211_local *local, 2362 struct ieee80211_sub_if_data *sdata, 2363 unsigned int queues, bool drop); 2364 2365 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2366 { 2367 /* 2368 * It's unsafe to try to do any work during reconfigure flow. 2369 * When the flow ends the work will be requeued. 2370 */ 2371 if (local->in_reconfig) 2372 return false; 2373 2374 /* 2375 * If quiescing is set, we are racing with __ieee80211_suspend. 2376 * __ieee80211_suspend flushes the workers after setting quiescing, 2377 * and we check quiescing / suspended before enqueing new workers. 2378 * We should abort the worker to avoid the races below. 2379 */ 2380 if (local->quiescing) 2381 return false; 2382 2383 /* 2384 * We might already be suspended if the following scenario occurs: 2385 * __ieee80211_suspend Control path 2386 * 2387 * if (local->quiescing) 2388 * return; 2389 * local->quiescing = true; 2390 * flush_workqueue(); 2391 * queue_work(...); 2392 * local->suspended = true; 2393 * local->quiescing = false; 2394 * worker starts running... 2395 */ 2396 if (local->suspended) 2397 return false; 2398 2399 return true; 2400 } 2401 2402 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2403 void ieee80211_txq_set_params(struct ieee80211_local *local); 2404 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2405 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2406 struct sta_info *sta, 2407 struct txq_info *txq, int tid); 2408 void ieee80211_txq_purge(struct ieee80211_local *local, 2409 struct txq_info *txqi); 2410 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2411 struct ieee80211_sub_if_data *sdata); 2412 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2413 struct txq_info *txqi); 2414 void ieee80211_wake_txqs(struct tasklet_struct *t); 2415 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2416 u16 transaction, u16 auth_alg, u16 status, 2417 const u8 *extra, size_t extra_len, const u8 *bssid, 2418 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2419 u32 tx_flags); 2420 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2421 const u8 *da, const u8 *bssid, 2422 u16 stype, u16 reason, 2423 bool send_frame, u8 *frame_buf); 2424 2425 enum { 2426 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2427 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2428 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2429 }; 2430 2431 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2432 size_t buffer_len, 2433 struct ieee80211_scan_ies *ie_desc, 2434 const u8 *ie, size_t ie_len, 2435 u8 bands_used, u32 *rate_masks, 2436 struct cfg80211_chan_def *chandef, 2437 u32 flags); 2438 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2439 const u8 *src, const u8 *dst, 2440 u32 ratemask, 2441 struct ieee80211_channel *chan, 2442 const u8 *ssid, size_t ssid_len, 2443 const u8 *ie, size_t ie_len, 2444 u32 flags); 2445 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2446 struct ieee802_11_elems *elems, 2447 enum nl80211_band band, u32 *basic_rates); 2448 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2449 struct ieee80211_link_data *link, 2450 enum ieee80211_smps_mode smps_mode); 2451 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2452 struct ieee80211_link_data *link); 2453 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2454 int link_id); 2455 2456 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2457 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2458 u16 cap); 2459 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2460 const struct cfg80211_chan_def *chandef, 2461 u16 prot_mode, bool rifs_mode); 2462 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2463 const struct cfg80211_chan_def *chandef); 2464 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2465 u32 cap); 2466 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2467 const struct cfg80211_chan_def *chandef); 2468 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2469 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, 2470 const struct ieee80211_sta_he_cap *he_cap, 2471 u8 *end); 2472 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2473 enum ieee80211_smps_mode smps_mode, 2474 struct sk_buff *skb); 2475 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2476 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef, 2477 const struct ieee80211_sta_eht_cap *eht_cap); 2478 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2479 const struct ieee80211_supported_band *sband, 2480 const u8 *srates, int srates_len, u32 *rates); 2481 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2482 struct sk_buff *skb, bool need_basic, 2483 enum nl80211_band band); 2484 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2485 struct sk_buff *skb, bool need_basic, 2486 enum nl80211_band band); 2487 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2488 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2489 struct ieee80211_sta_s1g_cap *caps, 2490 struct sk_buff *skb); 2491 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2492 struct sk_buff *skb); 2493 u8 *ieee80211_ie_build_s1g_cap(u8 *pos, struct ieee80211_sta_s1g_cap *s1g_cap); 2494 2495 /* channel management */ 2496 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2497 struct cfg80211_chan_def *chandef); 2498 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2499 const struct ieee80211_vht_operation *oper, 2500 const struct ieee80211_ht_operation *htop, 2501 struct cfg80211_chan_def *chandef); 2502 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper, 2503 bool support_160, bool support_320, 2504 struct cfg80211_chan_def *chandef); 2505 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2506 const struct ieee80211_he_operation *he_oper, 2507 const struct ieee80211_eht_operation *eht_oper, 2508 struct cfg80211_chan_def *chandef); 2509 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2510 struct cfg80211_chan_def *chandef); 2511 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2512 2513 int __must_check 2514 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2515 const struct cfg80211_chan_def *chandef, 2516 enum ieee80211_chanctx_mode mode); 2517 int __must_check 2518 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2519 const struct cfg80211_chan_def *chandef, 2520 enum ieee80211_chanctx_mode mode, 2521 bool radar_required); 2522 int __must_check 2523 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2524 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2525 2526 int __must_check 2527 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, 2528 const struct cfg80211_chan_def *chandef, 2529 u64 *changed); 2530 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2531 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2532 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2533 bool clear); 2534 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2535 struct ieee80211_chanctx *ctx); 2536 2537 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2538 struct ieee80211_chanctx *chanctx); 2539 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2540 struct ieee80211_chanctx *ctx, 2541 struct ieee80211_link_data *rsvd_for); 2542 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2543 2544 void ieee80211_dfs_cac_timer(unsigned long data); 2545 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2546 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2547 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2548 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2549 struct cfg80211_csa_settings *csa_settings); 2550 2551 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2552 struct ieee80211_sub_if_data *sdata); 2553 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2554 const struct cfg80211_chan_def *chandef, 2555 enum ieee80211_chanctx_mode chanmode, 2556 u8 radar_detect); 2557 int ieee80211_max_num_channels(struct ieee80211_local *local); 2558 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2559 struct ieee80211_chanctx *ctx); 2560 2561 /* TDLS */ 2562 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2563 const u8 *peer, u8 action_code, u8 dialog_token, 2564 u16 status_code, u32 peer_capability, 2565 bool initiator, const u8 *extra_ies, 2566 size_t extra_ies_len); 2567 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2568 const u8 *peer, enum nl80211_tdls_operation oper); 2569 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2570 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2571 const u8 *addr, u8 oper_class, 2572 struct cfg80211_chan_def *chandef); 2573 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2574 struct net_device *dev, 2575 const u8 *addr); 2576 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2577 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2578 const u8 *peer, u16 reason); 2579 void 2580 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2581 struct sk_buff *skb); 2582 2583 2584 const char *ieee80211_get_reason_code_string(u16 reason_code); 2585 u16 ieee80211_encode_usf(int val); 2586 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2587 enum nl80211_iftype type); 2588 2589 extern const struct ethtool_ops ieee80211_ethtool_ops; 2590 2591 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2592 struct ieee80211_vif *vif, 2593 struct ieee80211_sta *pubsta, 2594 int len, bool ampdu); 2595 #ifdef CONFIG_MAC80211_NOINLINE 2596 #define debug_noinline noinline 2597 #else 2598 #define debug_noinline 2599 #endif 2600 2601 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2602 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2603 2604 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2605 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2606 const struct ieee80211_sta_he_cap *he_cap, 2607 const struct ieee80211_sta_eht_cap *eht_cap, 2608 u8 *end, 2609 bool for_ap); 2610 2611 void 2612 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2613 struct ieee80211_supported_band *sband, 2614 const u8 *he_cap_ie, u8 he_cap_len, 2615 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2616 u8 eht_cap_len, 2617 struct link_sta_info *link_sta); 2618 #endif /* IEEE80211_I_H */ 2619