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; 413 414 bool disabled; 415 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 416 417 u8 ap_addr[ETH_ALEN] __aligned(2); 418 419 /* this is for a workaround, so we use it only for non-MLO */ 420 const u8 *supp_rates; 421 u8 supp_rates_len; 422 423 unsigned long timeout; 424 int tries; 425 426 u8 prev_ap_addr[ETH_ALEN]; 427 u8 ssid[IEEE80211_MAX_SSID_LEN]; 428 u8 ssid_len; 429 bool wmm, uapsd; 430 bool need_beacon; 431 bool synced; 432 bool timeout_started; 433 bool s1g; 434 435 unsigned int assoc_link_id; 436 437 u8 fils_nonces[2 * FILS_NONCE_LEN]; 438 u8 fils_kek[FILS_MAX_KEK_LEN]; 439 size_t fils_kek_len; 440 441 size_t ie_len; 442 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 443 u8 ie[]; 444 }; 445 446 struct ieee80211_sta_tx_tspec { 447 /* timestamp of the first packet in the time slice */ 448 unsigned long time_slice_start; 449 450 u32 admitted_time; /* in usecs, unlike over the air */ 451 u8 tsid; 452 s8 up; /* signed to be able to invalidate with -1 during teardown */ 453 454 /* consumed TX time in microseconds in the time slice */ 455 u32 consumed_tx_time; 456 enum { 457 TX_TSPEC_ACTION_NONE = 0, 458 TX_TSPEC_ACTION_DOWNGRADE, 459 TX_TSPEC_ACTION_STOP_DOWNGRADE, 460 } action; 461 bool downgraded; 462 }; 463 464 DECLARE_EWMA(beacon_signal, 4, 4) 465 466 struct ieee80211_if_managed { 467 struct timer_list timer; 468 struct timer_list conn_mon_timer; 469 struct timer_list bcn_mon_timer; 470 struct work_struct monitor_work; 471 struct wiphy_work beacon_connection_loss_work; 472 struct wiphy_work csa_connection_drop_work; 473 474 unsigned long beacon_timeout; 475 unsigned long probe_timeout; 476 int probe_send_count; 477 bool nullfunc_failed; 478 u8 connection_loss:1, 479 driver_disconnect:1, 480 reconnect:1, 481 associated:1; 482 483 struct ieee80211_mgd_auth_data *auth_data; 484 struct ieee80211_mgd_assoc_data *assoc_data; 485 486 bool powersave; /* powersave requested for this iface */ 487 bool broken_ap; /* AP is broken -- turn off powersave */ 488 489 unsigned int flags; 490 491 bool status_acked; 492 bool status_received; 493 __le16 status_fc; 494 495 enum { 496 IEEE80211_MFP_DISABLED, 497 IEEE80211_MFP_OPTIONAL, 498 IEEE80211_MFP_REQUIRED 499 } mfp; /* management frame protection */ 500 501 /* 502 * Bitmask of enabled u-apsd queues, 503 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 504 * to take effect. 505 */ 506 unsigned int uapsd_queues; 507 508 /* 509 * Maximum number of buffered frames AP can deliver during a 510 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 511 * Needs a new association to take effect. 512 */ 513 unsigned int uapsd_max_sp_len; 514 515 u8 use_4addr; 516 517 /* 518 * State variables for keeping track of RSSI of the AP currently 519 * connected to and informing driver when RSSI has gone 520 * below/above a certain threshold. 521 */ 522 int rssi_min_thold, rssi_max_thold; 523 524 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 525 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 526 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 527 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 528 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 529 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 530 531 /* TDLS support */ 532 u8 tdls_peer[ETH_ALEN] __aligned(2); 533 struct delayed_work tdls_peer_del_work; 534 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 535 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 536 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 537 bool tdls_wider_bw_prohibited; 538 539 /* WMM-AC TSPEC support */ 540 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 541 /* Use a separate work struct so that we can do something here 542 * while the sdata->work is flushing the queues, for example. 543 * otherwise, in scenarios where we hardly get any traffic out 544 * on the BE queue, but there's a lot of VO traffic, we might 545 * get stuck in a downgraded situation and flush takes forever. 546 */ 547 struct delayed_work tx_tspec_wk; 548 549 /* Information elements from the last transmitted (Re)Association 550 * Request frame. 551 */ 552 u8 *assoc_req_ies; 553 size_t assoc_req_ies_len; 554 555 struct wiphy_delayed_work ml_reconf_work; 556 u16 removed_links; 557 }; 558 559 struct ieee80211_if_ibss { 560 struct timer_list timer; 561 struct wiphy_work csa_connection_drop_work; 562 563 unsigned long last_scan_completed; 564 565 u32 basic_rates; 566 567 bool fixed_bssid; 568 bool fixed_channel; 569 bool privacy; 570 571 bool control_port; 572 bool userspace_handles_dfs; 573 574 u8 bssid[ETH_ALEN] __aligned(2); 575 u8 ssid[IEEE80211_MAX_SSID_LEN]; 576 u8 ssid_len, ie_len; 577 u8 *ie; 578 struct cfg80211_chan_def chandef; 579 580 unsigned long ibss_join_req; 581 /* probe response/beacon for IBSS */ 582 struct beacon_data __rcu *presp; 583 584 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 585 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 586 587 spinlock_t incomplete_lock; 588 struct list_head incomplete_stations; 589 590 enum { 591 IEEE80211_IBSS_MLME_SEARCH, 592 IEEE80211_IBSS_MLME_JOINED, 593 } state; 594 }; 595 596 /** 597 * struct ieee80211_if_ocb - OCB mode state 598 * 599 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 600 * @wrkq_flags: OCB deferred task action 601 * @incomplete_lock: delayed STA insertion lock 602 * @incomplete_stations: list of STAs waiting for delayed insertion 603 * @joined: indication if the interface is connected to an OCB network 604 */ 605 struct ieee80211_if_ocb { 606 struct timer_list housekeeping_timer; 607 unsigned long wrkq_flags; 608 609 spinlock_t incomplete_lock; 610 struct list_head incomplete_stations; 611 612 bool joined; 613 }; 614 615 /** 616 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 617 * 618 * these declarations define the interface, which enables 619 * vendor-specific mesh synchronization 620 * 621 */ 622 struct ieee802_11_elems; 623 struct ieee80211_mesh_sync_ops { 624 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 625 struct ieee80211_mgmt *mgmt, unsigned int len, 626 const struct ieee80211_meshconf_ie *mesh_cfg, 627 struct ieee80211_rx_status *rx_status); 628 629 /* should be called with beacon_data under RCU read lock */ 630 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 631 struct beacon_data *beacon); 632 /* add other framework functions here */ 633 }; 634 635 struct mesh_csa_settings { 636 struct rcu_head rcu_head; 637 struct cfg80211_csa_settings settings; 638 }; 639 640 /** 641 * struct mesh_table 642 * 643 * @known_gates: list of known mesh gates and their mpaths by the station. The 644 * gate's mpath may or may not be resolved and active. 645 * @gates_lock: protects updates to known_gates 646 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 647 * @walk_head: linked list containing all mesh_path objects 648 * @walk_lock: lock protecting walk_head 649 * @entries: number of entries in the table 650 */ 651 struct mesh_table { 652 struct hlist_head known_gates; 653 spinlock_t gates_lock; 654 struct rhashtable rhead; 655 struct hlist_head walk_head; 656 spinlock_t walk_lock; 657 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 658 }; 659 660 /** 661 * struct mesh_tx_cache - mesh fast xmit header cache 662 * 663 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key 664 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects 665 * @walk_lock: lock protecting walk_head and rht 666 */ 667 struct mesh_tx_cache { 668 struct rhashtable rht; 669 struct hlist_head walk_head; 670 spinlock_t walk_lock; 671 }; 672 673 struct ieee80211_if_mesh { 674 struct timer_list housekeeping_timer; 675 struct timer_list mesh_path_timer; 676 struct timer_list mesh_path_root_timer; 677 678 unsigned long wrkq_flags; 679 unsigned long mbss_changed[64 / BITS_PER_LONG]; 680 681 bool userspace_handles_dfs; 682 683 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 684 size_t mesh_id_len; 685 /* Active Path Selection Protocol Identifier */ 686 u8 mesh_pp_id; 687 /* Active Path Selection Metric Identifier */ 688 u8 mesh_pm_id; 689 /* Congestion Control Mode Identifier */ 690 u8 mesh_cc_id; 691 /* Synchronization Protocol Identifier */ 692 u8 mesh_sp_id; 693 /* Authentication Protocol Identifier */ 694 u8 mesh_auth_id; 695 /* Local mesh Sequence Number */ 696 u32 sn; 697 /* Last used PREQ ID */ 698 u32 preq_id; 699 atomic_t mpaths; 700 /* Timestamp of last SN update */ 701 unsigned long last_sn_update; 702 /* Time when it's ok to send next PERR */ 703 unsigned long next_perr; 704 /* Timestamp of last PREQ sent */ 705 unsigned long last_preq; 706 struct mesh_rmc *rmc; 707 spinlock_t mesh_preq_queue_lock; 708 struct mesh_preq_queue preq_queue; 709 int preq_queue_len; 710 struct mesh_stats mshstats; 711 struct mesh_config mshcfg; 712 atomic_t estab_plinks; 713 atomic_t mesh_seqnum; 714 bool accepting_plinks; 715 int num_gates; 716 struct beacon_data __rcu *beacon; 717 const u8 *ie; 718 u8 ie_len; 719 enum { 720 IEEE80211_MESH_SEC_NONE = 0x0, 721 IEEE80211_MESH_SEC_AUTHED = 0x1, 722 IEEE80211_MESH_SEC_SECURED = 0x2, 723 } security; 724 bool user_mpm; 725 /* Extensible Synchronization Framework */ 726 const struct ieee80211_mesh_sync_ops *sync_ops; 727 s64 sync_offset_clockdrift_max; 728 spinlock_t sync_offset_lock; 729 /* mesh power save */ 730 enum nl80211_mesh_power_mode nonpeer_pm; 731 int ps_peers_light_sleep; 732 int ps_peers_deep_sleep; 733 struct ps_data ps; 734 /* Channel Switching Support */ 735 struct mesh_csa_settings __rcu *csa; 736 enum { 737 IEEE80211_MESH_CSA_ROLE_NONE, 738 IEEE80211_MESH_CSA_ROLE_INIT, 739 IEEE80211_MESH_CSA_ROLE_REPEATER, 740 } csa_role; 741 u8 chsw_ttl; 742 u16 pre_value; 743 744 /* offset from skb->data while building IE */ 745 int meshconf_offset; 746 747 struct mesh_table mesh_paths; 748 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 749 int mesh_paths_generation; 750 int mpp_paths_generation; 751 struct mesh_tx_cache tx_cache; 752 }; 753 754 #ifdef CONFIG_MAC80211_MESH 755 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 756 do { (msh)->mshstats.name++; } while (0) 757 #else 758 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 759 do { } while (0) 760 #endif 761 762 /** 763 * enum ieee80211_sub_if_data_flags - virtual interface flags 764 * 765 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 766 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 767 * associated stations and deliver multicast frames both 768 * back to wireless media and to the local net stack. 769 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 770 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 771 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 772 * recovery 773 */ 774 enum ieee80211_sub_if_data_flags { 775 IEEE80211_SDATA_ALLMULTI = BIT(0), 776 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 777 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 778 IEEE80211_SDATA_IN_DRIVER = BIT(5), 779 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 780 }; 781 782 /** 783 * enum ieee80211_sdata_state_bits - virtual interface state bits 784 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 785 * mirrors netif_running() but is separate for interface type 786 * change handling while the interface is up 787 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 788 * mode, so queues are stopped 789 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 790 * to offchannel, reset when offchannel returns 791 */ 792 enum ieee80211_sdata_state_bits { 793 SDATA_STATE_RUNNING, 794 SDATA_STATE_OFFCHANNEL, 795 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 796 }; 797 798 /** 799 * enum ieee80211_chanctx_mode - channel context configuration mode 800 * 801 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 802 * multiple interfaces 803 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 804 * only by a single interface. This can be used for example for 805 * non-fixed channel IBSS. 806 */ 807 enum ieee80211_chanctx_mode { 808 IEEE80211_CHANCTX_SHARED, 809 IEEE80211_CHANCTX_EXCLUSIVE 810 }; 811 812 /** 813 * enum ieee80211_chanctx_replace_state - channel context replacement state 814 * 815 * This is used for channel context in-place reservations that require channel 816 * context switch/swap. 817 * 818 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 819 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 820 * by a (not yet registered) channel context pointed by %replace_ctx. 821 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 822 * replaces an existing channel context pointed to by %replace_ctx. 823 */ 824 enum ieee80211_chanctx_replace_state { 825 IEEE80211_CHANCTX_REPLACE_NONE, 826 IEEE80211_CHANCTX_WILL_BE_REPLACED, 827 IEEE80211_CHANCTX_REPLACES_OTHER, 828 }; 829 830 struct ieee80211_chanctx { 831 struct list_head list; 832 struct rcu_head rcu_head; 833 834 struct list_head assigned_links; 835 struct list_head reserved_links; 836 837 enum ieee80211_chanctx_replace_state replace_state; 838 struct ieee80211_chanctx *replace_ctx; 839 840 enum ieee80211_chanctx_mode mode; 841 bool driver_present; 842 843 struct ieee80211_chanctx_conf conf; 844 }; 845 846 struct mac80211_qos_map { 847 struct cfg80211_qos_map qos_map; 848 struct rcu_head rcu_head; 849 }; 850 851 enum txq_info_flags { 852 IEEE80211_TXQ_STOP, 853 IEEE80211_TXQ_AMPDU, 854 IEEE80211_TXQ_NO_AMSDU, 855 IEEE80211_TXQ_DIRTY, 856 }; 857 858 /** 859 * struct txq_info - per tid queue 860 * 861 * @tin: contains packets split into multiple flows 862 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 863 * a fq_flow which is already owned by a different tin 864 * @def_cvars: codel vars for @def_flow 865 * @frags: used to keep fragments created after dequeue 866 * @schedule_order: used with ieee80211_local->active_txqs 867 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 868 */ 869 struct txq_info { 870 struct fq_tin tin; 871 struct codel_vars def_cvars; 872 struct codel_stats cstats; 873 874 u16 schedule_round; 875 struct list_head schedule_order; 876 877 struct sk_buff_head frags; 878 879 unsigned long flags; 880 881 /* keep last! */ 882 struct ieee80211_txq txq; 883 }; 884 885 struct ieee80211_if_mntr { 886 u32 flags; 887 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 888 889 struct list_head list; 890 }; 891 892 /** 893 * struct ieee80211_if_nan - NAN state 894 * 895 * @conf: current NAN configuration 896 * @func_ids: a bitmap of available instance_id's 897 */ 898 struct ieee80211_if_nan { 899 struct cfg80211_nan_conf conf; 900 901 /* protects function_inst_ids */ 902 spinlock_t func_lock; 903 struct idr function_inst_ids; 904 }; 905 906 struct ieee80211_link_data_managed { 907 u8 bssid[ETH_ALEN] __aligned(2); 908 909 u8 dtim_period; 910 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 911 driver_smps_mode; /* smps mode request */ 912 913 ieee80211_conn_flags_t conn_flags; 914 915 s16 p2p_noa_index; 916 917 bool tdls_chan_switch_prohibited; 918 919 bool have_beacon; 920 bool tracking_signal_avg; 921 bool disable_wmm_tracking; 922 bool operating_11g_mode; 923 924 bool csa_waiting_bcn; 925 bool csa_ignored_same_chan; 926 struct wiphy_delayed_work chswitch_work; 927 928 struct wiphy_work request_smps_work; 929 bool beacon_crc_valid; 930 u32 beacon_crc; 931 struct ewma_beacon_signal ave_beacon_signal; 932 int last_ave_beacon_signal; 933 934 /* 935 * Number of Beacon frames used in ave_beacon_signal. This can be used 936 * to avoid generating less reliable cqm events that would be based 937 * only on couple of received frames. 938 */ 939 unsigned int count_beacon_signal; 940 941 /* Number of times beacon loss was invoked. */ 942 unsigned int beacon_loss_count; 943 944 /* 945 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 946 * that triggered a cqm event. 0 indicates that no event has been 947 * generated for the current association. 948 */ 949 int last_cqm_event_signal; 950 951 int wmm_last_param_set; 952 int mu_edca_last_param_set; 953 954 u8 bss_param_ch_cnt; 955 956 struct cfg80211_bss *bss; 957 }; 958 959 struct ieee80211_link_data_ap { 960 struct beacon_data __rcu *beacon; 961 struct probe_resp __rcu *probe_resp; 962 struct fils_discovery_data __rcu *fils_discovery; 963 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 964 965 /* to be used after channel switch. */ 966 struct cfg80211_beacon_data *next_beacon; 967 }; 968 969 struct ieee80211_link_data { 970 struct ieee80211_sub_if_data *sdata; 971 unsigned int link_id; 972 973 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 974 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 975 976 /* multicast keys only */ 977 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 978 NUM_DEFAULT_MGMT_KEYS + 979 NUM_DEFAULT_BEACON_KEYS]; 980 struct ieee80211_key __rcu *default_multicast_key; 981 struct ieee80211_key __rcu *default_mgmt_key; 982 struct ieee80211_key __rcu *default_beacon_key; 983 984 struct work_struct csa_finalize_work; 985 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 986 987 bool operating_11g_mode; 988 989 struct cfg80211_chan_def csa_chandef; 990 991 struct work_struct color_change_finalize_work; 992 struct delayed_work color_collision_detect_work; 993 u64 color_bitmap; 994 995 /* context reservation -- protected with chanctx_mtx */ 996 struct ieee80211_chanctx *reserved_chanctx; 997 struct cfg80211_chan_def reserved_chandef; 998 bool reserved_radar_required; 999 bool reserved_ready; 1000 1001 u8 needed_rx_chains; 1002 enum ieee80211_smps_mode smps_mode; 1003 1004 int user_power_level; /* in dBm */ 1005 int ap_power_level; /* in dBm */ 1006 1007 bool radar_required; 1008 struct delayed_work dfs_cac_timer_work; 1009 1010 union { 1011 struct ieee80211_link_data_managed mgd; 1012 struct ieee80211_link_data_ap ap; 1013 } u; 1014 1015 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 1016 1017 struct ieee80211_bss_conf *conf; 1018 1019 #ifdef CONFIG_MAC80211_DEBUGFS 1020 struct dentry *debugfs_dir; 1021 #endif 1022 }; 1023 1024 struct ieee80211_sub_if_data { 1025 struct list_head list; 1026 1027 struct wireless_dev wdev; 1028 1029 /* keys */ 1030 struct list_head key_list; 1031 1032 /* count for keys needing tailroom space allocation */ 1033 int crypto_tx_tailroom_needed_cnt; 1034 int crypto_tx_tailroom_pending_dec; 1035 struct delayed_work dec_tailroom_needed_wk; 1036 1037 struct net_device *dev; 1038 struct ieee80211_local *local; 1039 1040 unsigned int flags; 1041 1042 unsigned long state; 1043 1044 char name[IFNAMSIZ]; 1045 1046 struct ieee80211_fragment_cache frags; 1047 1048 /* TID bitmap for NoAck policy */ 1049 u16 noack_map; 1050 1051 /* bit field of ACM bits (BIT(802.1D tag)) */ 1052 u8 wmm_acm; 1053 1054 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1055 struct ieee80211_key __rcu *default_unicast_key; 1056 1057 u16 sequence_number; 1058 u16 mld_mcast_seq; 1059 __be16 control_port_protocol; 1060 bool control_port_no_encrypt; 1061 bool control_port_no_preauth; 1062 bool control_port_over_nl80211; 1063 1064 atomic_t num_tx_queued; 1065 struct mac80211_qos_map __rcu *qos_map; 1066 1067 /* used to reconfigure hardware SM PS */ 1068 struct work_struct recalc_smps; 1069 1070 struct wiphy_work work; 1071 struct sk_buff_head skb_queue; 1072 struct sk_buff_head status_queue; 1073 1074 /* 1075 * AP this belongs to: self in AP mode and 1076 * corresponding AP in VLAN mode, NULL for 1077 * all others (might be needed later in IBSS) 1078 */ 1079 struct ieee80211_if_ap *bss; 1080 1081 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1082 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1083 1084 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1085 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1086 1087 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1088 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1089 1090 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1091 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1092 bool beacon_rate_set; 1093 1094 union { 1095 struct ieee80211_if_ap ap; 1096 struct ieee80211_if_vlan vlan; 1097 struct ieee80211_if_managed mgd; 1098 struct ieee80211_if_ibss ibss; 1099 struct ieee80211_if_mesh mesh; 1100 struct ieee80211_if_ocb ocb; 1101 struct ieee80211_if_mntr mntr; 1102 struct ieee80211_if_nan nan; 1103 } u; 1104 1105 struct ieee80211_link_data deflink; 1106 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1107 1108 /* for ieee80211_set_active_links_async() */ 1109 struct work_struct activate_links_work; 1110 u16 desired_active_links; 1111 1112 #ifdef CONFIG_MAC80211_DEBUGFS 1113 struct { 1114 struct dentry *subdir_stations; 1115 struct dentry *default_unicast_key; 1116 struct dentry *default_multicast_key; 1117 struct dentry *default_mgmt_key; 1118 struct dentry *default_beacon_key; 1119 } debugfs; 1120 #endif 1121 1122 /* must be last, dynamically sized area in this! */ 1123 struct ieee80211_vif vif; 1124 }; 1125 1126 static inline vif_to_sdata(struct ieee80211_vif * p)1127 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1128 { 1129 return container_of(p, struct ieee80211_sub_if_data, vif); 1130 } 1131 sdata_lock(struct ieee80211_sub_if_data * sdata)1132 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1133 __acquires(&sdata->wdev.mtx) 1134 { 1135 mutex_lock(&sdata->wdev.mtx); 1136 __acquire(&sdata->wdev.mtx); 1137 } 1138 sdata_unlock(struct ieee80211_sub_if_data * sdata)1139 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1140 __releases(&sdata->wdev.mtx) 1141 { 1142 mutex_unlock(&sdata->wdev.mtx); 1143 __release(&sdata->wdev.mtx); 1144 } 1145 1146 #define sdata_dereference(p, sdata) \ 1147 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1148 1149 static inline void sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1150 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1151 { 1152 lockdep_assert_held(&sdata->wdev.mtx); 1153 } 1154 1155 static inline int ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)1156 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width) 1157 { 1158 switch (width) { 1159 case NL80211_CHAN_WIDTH_5: 1160 return 2; 1161 case NL80211_CHAN_WIDTH_10: 1162 return 1; 1163 default: 1164 return 0; 1165 } 1166 } 1167 1168 static inline int ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1169 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1170 { 1171 return ieee80211_chanwidth_get_shift(chandef->width); 1172 } 1173 1174 static inline int ieee80211_vif_get_shift(struct ieee80211_vif * vif)1175 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1176 { 1177 struct ieee80211_chanctx_conf *chanctx_conf; 1178 int shift = 0; 1179 1180 rcu_read_lock(); 1181 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 1182 if (chanctx_conf) 1183 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1184 rcu_read_unlock(); 1185 1186 return shift; 1187 } 1188 1189 static inline int ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems,struct cfg80211_rnr_elems * rnr_elems,u8 i)1190 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems, 1191 struct cfg80211_rnr_elems *rnr_elems, 1192 u8 i) 1193 { 1194 int len = 0; 1195 1196 if (!elems || !elems->cnt || i > elems->cnt) 1197 return 0; 1198 1199 if (i < elems->cnt) { 1200 len = elems->elem[i].len; 1201 if (rnr_elems) { 1202 len += rnr_elems->elem[i].len; 1203 for (i = elems->cnt; i < rnr_elems->cnt; i++) 1204 len += rnr_elems->elem[i].len; 1205 } 1206 return len; 1207 } 1208 1209 /* i == elems->cnt, calculate total length of all MBSSID elements */ 1210 for (i = 0; i < elems->cnt; i++) 1211 len += elems->elem[i].len; 1212 1213 if (rnr_elems) { 1214 for (i = 0; i < rnr_elems->cnt; i++) 1215 len += rnr_elems->elem[i].len; 1216 } 1217 1218 return len; 1219 } 1220 1221 enum { 1222 IEEE80211_RX_MSG = 1, 1223 IEEE80211_TX_STATUS_MSG = 2, 1224 }; 1225 1226 enum queue_stop_reason { 1227 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1228 IEEE80211_QUEUE_STOP_REASON_PS, 1229 IEEE80211_QUEUE_STOP_REASON_CSA, 1230 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1231 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1232 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1233 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1234 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1235 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1236 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1237 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1238 1239 IEEE80211_QUEUE_STOP_REASONS, 1240 }; 1241 1242 #ifdef CONFIG_MAC80211_LEDS 1243 struct tpt_led_trigger { 1244 char name[32]; 1245 const struct ieee80211_tpt_blink *blink_table; 1246 unsigned int blink_table_len; 1247 struct timer_list timer; 1248 struct ieee80211_local *local; 1249 unsigned long prev_traffic; 1250 unsigned long tx_bytes, rx_bytes; 1251 unsigned int active, want; 1252 bool running; 1253 }; 1254 #endif 1255 1256 /** 1257 * mac80211 scan flags - currently active scan mode 1258 * 1259 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1260 * well be on the operating channel 1261 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1262 * determine if we are on the operating channel or not 1263 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1264 * channel. This should not interrupt normal traffic. 1265 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1266 * that the scan completed. 1267 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1268 * a scan complete for an aborted scan. 1269 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1270 * cancelled. 1271 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1272 * and could send a probe request after receiving a beacon. 1273 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1274 */ 1275 enum { 1276 SCAN_SW_SCANNING, 1277 SCAN_HW_SCANNING, 1278 SCAN_ONCHANNEL_SCANNING, 1279 SCAN_COMPLETED, 1280 SCAN_ABORTED, 1281 SCAN_HW_CANCELLED, 1282 SCAN_BEACON_WAIT, 1283 SCAN_BEACON_DONE, 1284 }; 1285 1286 /** 1287 * enum mac80211_scan_state - scan state machine states 1288 * 1289 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1290 * determines if we should keep on scanning or switch back to the 1291 * operating channel 1292 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1293 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1294 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1295 * send out data 1296 * @SCAN_RESUME: Resume the scan and scan the next channel 1297 * @SCAN_ABORT: Abort the scan and go back to operating channel 1298 */ 1299 enum mac80211_scan_state { 1300 SCAN_DECISION, 1301 SCAN_SET_CHANNEL, 1302 SCAN_SEND_PROBE, 1303 SCAN_SUSPEND, 1304 SCAN_RESUME, 1305 SCAN_ABORT, 1306 }; 1307 1308 DECLARE_STATIC_KEY_FALSE(aql_disable); 1309 1310 struct ieee80211_local { 1311 /* embed the driver visible part. 1312 * don't cast (use the static inlines below), but we keep 1313 * it first anyway so they become a no-op */ 1314 struct ieee80211_hw hw; 1315 1316 struct fq fq; 1317 struct codel_vars *cvars; 1318 struct codel_params cparams; 1319 1320 /* protects active_txqs and txqi->schedule_order */ 1321 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1322 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1323 u16 schedule_round[IEEE80211_NUM_ACS]; 1324 1325 /* serializes ieee80211_handle_wake_tx_queue */ 1326 spinlock_t handle_wake_tx_queue_lock; 1327 1328 u16 airtime_flags; 1329 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1330 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1331 u32 aql_threshold; 1332 atomic_t aql_total_pending_airtime; 1333 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1334 1335 const struct ieee80211_ops *ops; 1336 1337 /* 1338 * private workqueue to mac80211. mac80211 makes this accessible 1339 * via ieee80211_queue_work() 1340 */ 1341 struct workqueue_struct *workqueue; 1342 1343 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1344 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1345 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1346 spinlock_t queue_stop_reason_lock; 1347 1348 int open_count; 1349 int monitors, cooked_mntrs; 1350 /* number of interfaces with corresponding FIF_ flags */ 1351 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1352 fif_probe_req; 1353 bool probe_req_reg; 1354 bool rx_mcast_action_reg; 1355 unsigned int filter_flags; /* FIF_* */ 1356 1357 bool wiphy_ciphers_allocated; 1358 1359 bool use_chanctx; 1360 1361 /* protects the aggregated multicast list and filter calls */ 1362 spinlock_t filter_lock; 1363 1364 /* used for uploading changed mc list */ 1365 struct work_struct reconfig_filter; 1366 1367 /* aggregated multicast list */ 1368 struct netdev_hw_addr_list mc_list; 1369 1370 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1371 1372 /* 1373 * suspended is true if we finished all the suspend _and_ we have 1374 * not yet come up from resume. This is to be used by mac80211 1375 * to ensure driver sanity during suspend and mac80211's own 1376 * sanity. It can eventually be used for WoW as well. 1377 */ 1378 bool suspended; 1379 1380 /* suspending is true during the whole suspend process */ 1381 bool suspending; 1382 1383 /* 1384 * Resuming is true while suspended, but when we're reprogramming the 1385 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1386 * again even though some other parts of the stack are still suspended 1387 * and we still drop received frames to avoid waking the stack. 1388 */ 1389 bool resuming; 1390 1391 /* 1392 * quiescing is true during the suspend process _only_ to 1393 * ease timer cancelling etc. 1394 */ 1395 bool quiescing; 1396 1397 /* device is started */ 1398 bool started; 1399 1400 /* device is during a HW reconfig */ 1401 bool in_reconfig; 1402 1403 /* reconfiguration failed ... suppress some warnings etc. */ 1404 bool reconfig_failure; 1405 1406 /* wowlan is enabled -- don't reconfig on resume */ 1407 bool wowlan; 1408 1409 struct work_struct radar_detected_work; 1410 1411 /* number of RX chains the hardware has */ 1412 u8 rx_chains; 1413 1414 /* bitmap of which sbands were copied */ 1415 u8 sband_allocated; 1416 1417 int tx_headroom; /* required headroom for hardware/radiotap */ 1418 1419 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1420 * added to skb_queue will be processed, but frames in 1421 * skb_queue_unreliable may be dropped if the total length of these 1422 * queues increases over the limit. */ 1423 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1424 struct tasklet_struct tasklet; 1425 struct sk_buff_head skb_queue; 1426 struct sk_buff_head skb_queue_unreliable; 1427 1428 spinlock_t rx_path_lock; 1429 1430 /* Station data */ 1431 /* 1432 * The mutex only protects the list, hash table and 1433 * counter, reads are done with RCU. 1434 */ 1435 struct mutex sta_mtx; 1436 spinlock_t tim_lock; 1437 unsigned long num_sta; 1438 struct list_head sta_list; 1439 struct rhltable sta_hash; 1440 struct rhltable link_sta_hash; 1441 struct timer_list sta_cleanup; 1442 int sta_generation; 1443 1444 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1445 struct tasklet_struct tx_pending_tasklet; 1446 struct tasklet_struct wake_txqs_tasklet; 1447 1448 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1449 1450 /* number of interfaces with allmulti RX */ 1451 atomic_t iff_allmultis; 1452 1453 struct rate_control_ref *rate_ctrl; 1454 1455 struct arc4_ctx wep_tx_ctx; 1456 struct arc4_ctx wep_rx_ctx; 1457 u32 wep_iv; 1458 1459 /* see iface.c */ 1460 struct list_head interfaces; 1461 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1462 struct mutex iflist_mtx; 1463 1464 /* 1465 * Key mutex, protects sdata's key_list and sta_info's 1466 * key pointers and ptk_idx (write access, they're RCU.) 1467 */ 1468 struct mutex key_mtx; 1469 1470 /* mutex for scan and work locking */ 1471 struct mutex mtx; 1472 1473 /* Scanning and BSS list */ 1474 unsigned long scanning; 1475 struct cfg80211_ssid scan_ssid; 1476 struct cfg80211_scan_request *int_scan_req; 1477 struct cfg80211_scan_request __rcu *scan_req; 1478 struct ieee80211_scan_request *hw_scan_req; 1479 struct cfg80211_chan_def scan_chandef; 1480 enum nl80211_band hw_scan_band; 1481 int scan_channel_idx; 1482 int scan_ies_len; 1483 int hw_scan_ies_bufsize; 1484 struct cfg80211_scan_info scan_info; 1485 1486 struct work_struct sched_scan_stopped_work; 1487 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1488 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1489 u8 scan_addr[ETH_ALEN]; 1490 1491 unsigned long leave_oper_channel_time; 1492 enum mac80211_scan_state next_scan_state; 1493 struct delayed_work scan_work; 1494 struct ieee80211_sub_if_data __rcu *scan_sdata; 1495 /* For backward compatibility only -- do not use */ 1496 struct cfg80211_chan_def _oper_chandef; 1497 1498 /* Temporary remain-on-channel for off-channel operations */ 1499 struct ieee80211_channel *tmp_channel; 1500 1501 /* channel contexts */ 1502 struct list_head chanctx_list; 1503 struct mutex chanctx_mtx; 1504 1505 #ifdef CONFIG_MAC80211_LEDS 1506 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1507 struct led_trigger tpt_led; 1508 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1509 atomic_t radio_led_active, tpt_led_active; 1510 struct tpt_led_trigger *tpt_led_trigger; 1511 #endif 1512 1513 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1514 /* SNMP counters */ 1515 /* dot11CountersTable */ 1516 u32 dot11TransmittedFragmentCount; 1517 u32 dot11MulticastTransmittedFrameCount; 1518 u32 dot11FailedCount; 1519 u32 dot11RetryCount; 1520 u32 dot11MultipleRetryCount; 1521 u32 dot11FrameDuplicateCount; 1522 u32 dot11ReceivedFragmentCount; 1523 u32 dot11MulticastReceivedFrameCount; 1524 u32 dot11TransmittedFrameCount; 1525 1526 /* TX/RX handler statistics */ 1527 unsigned int tx_handlers_drop; 1528 unsigned int tx_handlers_queued; 1529 unsigned int tx_handlers_drop_wep; 1530 unsigned int tx_handlers_drop_not_assoc; 1531 unsigned int tx_handlers_drop_unauth_port; 1532 unsigned int rx_handlers_drop; 1533 unsigned int rx_handlers_queued; 1534 unsigned int rx_handlers_drop_nullfunc; 1535 unsigned int rx_handlers_drop_defrag; 1536 unsigned int tx_expand_skb_head; 1537 unsigned int tx_expand_skb_head_cloned; 1538 unsigned int rx_expand_skb_head_defrag; 1539 unsigned int rx_handlers_fragments; 1540 unsigned int tx_status_drop; 1541 #define I802_DEBUG_INC(c) (c)++ 1542 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1543 #define I802_DEBUG_INC(c) do { } while (0) 1544 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1545 1546 1547 int total_ps_buffered; /* total number of all buffered unicast and 1548 * multicast packets for power saving stations 1549 */ 1550 1551 bool pspolling; 1552 /* 1553 * PS can only be enabled when we have exactly one managed 1554 * interface (and monitors) in PS, this then points there. 1555 */ 1556 struct ieee80211_sub_if_data *ps_sdata; 1557 struct work_struct dynamic_ps_enable_work; 1558 struct work_struct dynamic_ps_disable_work; 1559 struct timer_list dynamic_ps_timer; 1560 struct notifier_block ifa_notifier; 1561 struct notifier_block ifa6_notifier; 1562 1563 /* 1564 * The dynamic ps timeout configured from user space via WEXT - 1565 * this will override whatever chosen by mac80211 internally. 1566 */ 1567 int dynamic_ps_forced_timeout; 1568 1569 int user_power_level; /* in dBm, for all interfaces */ 1570 1571 enum ieee80211_smps_mode smps_mode; 1572 1573 struct work_struct restart_work; 1574 1575 #ifdef CONFIG_MAC80211_DEBUGFS 1576 struct local_debugfsdentries { 1577 struct dentry *rcdir; 1578 struct dentry *keys; 1579 } debugfs; 1580 bool force_tx_status; 1581 #endif 1582 1583 /* 1584 * Remain-on-channel support 1585 */ 1586 struct delayed_work roc_work; 1587 struct list_head roc_list; 1588 struct work_struct hw_roc_start, hw_roc_done; 1589 unsigned long hw_roc_start_time; 1590 u64 roc_cookie_counter; 1591 1592 struct idr ack_status_frames; 1593 spinlock_t ack_status_lock; 1594 1595 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1596 1597 /* virtual monitor interface */ 1598 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1599 struct cfg80211_chan_def monitor_chandef; 1600 1601 /* extended capabilities provided by mac80211 */ 1602 u8 ext_capa[8]; 1603 }; 1604 1605 static inline struct ieee80211_sub_if_data * IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1606 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1607 { 1608 return netdev_priv(dev); 1609 } 1610 1611 static inline struct ieee80211_sub_if_data * IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1612 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1613 { 1614 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1615 } 1616 1617 static inline struct ieee80211_supported_band * ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1618 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1619 { 1620 struct ieee80211_local *local = sdata->local; 1621 struct ieee80211_chanctx_conf *chanctx_conf; 1622 enum nl80211_band band; 1623 1624 WARN_ON(ieee80211_vif_is_mld(&sdata->vif)); 1625 1626 rcu_read_lock(); 1627 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1628 1629 if (!chanctx_conf) { 1630 rcu_read_unlock(); 1631 return NULL; 1632 } 1633 1634 band = chanctx_conf->def.chan->band; 1635 rcu_read_unlock(); 1636 1637 return local->hw.wiphy->bands[band]; 1638 } 1639 1640 static inline struct ieee80211_supported_band * ieee80211_get_link_sband(struct ieee80211_link_data * link)1641 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1642 { 1643 struct ieee80211_local *local = link->sdata->local; 1644 struct ieee80211_chanctx_conf *chanctx_conf; 1645 enum nl80211_band band; 1646 1647 rcu_read_lock(); 1648 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1649 if (!chanctx_conf) { 1650 rcu_read_unlock(); 1651 return NULL; 1652 } 1653 1654 band = chanctx_conf->def.chan->band; 1655 rcu_read_unlock(); 1656 1657 return local->hw.wiphy->bands[band]; 1658 } 1659 1660 /* this struct holds the value parsing from channel switch IE */ 1661 struct ieee80211_csa_ie { 1662 struct cfg80211_chan_def chandef; 1663 u8 mode; 1664 u8 count; 1665 u8 ttl; 1666 u16 pre_value; 1667 u16 reason_code; 1668 u32 max_switch_time; 1669 }; 1670 1671 /* Parsed Information Elements */ 1672 struct ieee802_11_elems { 1673 const u8 *ie_start; 1674 size_t total_len; 1675 u32 crc; 1676 1677 /* pointers to IEs */ 1678 const struct ieee80211_tdls_lnkie *lnk_id; 1679 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1680 const u8 *ext_capab; 1681 const u8 *ssid; 1682 const u8 *supp_rates; 1683 const u8 *ds_params; 1684 const struct ieee80211_tim_ie *tim; 1685 const u8 *rsn; 1686 const u8 *rsnx; 1687 const u8 *erp_info; 1688 const u8 *ext_supp_rates; 1689 const u8 *wmm_info; 1690 const u8 *wmm_param; 1691 const struct ieee80211_ht_cap *ht_cap_elem; 1692 const struct ieee80211_ht_operation *ht_operation; 1693 const struct ieee80211_vht_cap *vht_cap_elem; 1694 const struct ieee80211_vht_operation *vht_operation; 1695 const struct ieee80211_meshconf_ie *mesh_config; 1696 const u8 *he_cap; 1697 const struct ieee80211_he_operation *he_operation; 1698 const struct ieee80211_he_spr *he_spr; 1699 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1700 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1701 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1702 const u8 *uora_element; 1703 const u8 *mesh_id; 1704 const u8 *peering; 1705 const __le16 *awake_window; 1706 const u8 *preq; 1707 const u8 *prep; 1708 const u8 *perr; 1709 const struct ieee80211_rann_ie *rann; 1710 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1711 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1712 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1713 const u8 *max_channel_switch_time; 1714 const u8 *country_elem; 1715 const u8 *pwr_constr_elem; 1716 const u8 *cisco_dtpc_elem; 1717 const struct ieee80211_timeout_interval_ie *timeout_int; 1718 const u8 *opmode_notif; 1719 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1720 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1721 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1722 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1723 const struct ieee80211_bssid_index *bssid_index; 1724 u8 max_bssid_indicator; 1725 u8 dtim_count; 1726 u8 dtim_period; 1727 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1728 const struct ieee80211_s1g_cap *s1g_capab; 1729 const struct ieee80211_s1g_oper_ie *s1g_oper; 1730 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1731 const struct ieee80211_aid_response_ie *aid_resp; 1732 const struct ieee80211_eht_cap_elem *eht_cap; 1733 const struct ieee80211_eht_operation *eht_operation; 1734 const struct ieee80211_multi_link_elem *ml_basic; 1735 const struct ieee80211_multi_link_elem *ml_reconf; 1736 1737 /* length of them, respectively */ 1738 u8 ext_capab_len; 1739 u8 ssid_len; 1740 u8 supp_rates_len; 1741 u8 tim_len; 1742 u8 rsn_len; 1743 u8 rsnx_len; 1744 u8 ext_supp_rates_len; 1745 u8 wmm_info_len; 1746 u8 wmm_param_len; 1747 u8 he_cap_len; 1748 u8 mesh_id_len; 1749 u8 peering_len; 1750 u8 preq_len; 1751 u8 prep_len; 1752 u8 perr_len; 1753 u8 country_elem_len; 1754 u8 bssid_index_len; 1755 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1756 u8 tx_pwr_env_num; 1757 u8 eht_cap_len; 1758 1759 /* mult-link element can be de-fragmented and thus u8 is not sufficient */ 1760 size_t ml_basic_len; 1761 size_t ml_reconf_len; 1762 1763 /* The basic Multi-Link element in the original IEs */ 1764 const struct element *ml_basic_elem; 1765 1766 /* The reconfiguration Multi-Link element in the original IEs */ 1767 const struct element *ml_reconf_elem; 1768 1769 /* 1770 * store the per station profile pointer and length in case that the 1771 * parsing also handled Multi-Link element parsing for a specific link 1772 * ID. 1773 */ 1774 struct ieee80211_mle_per_sta_profile *prof; 1775 size_t sta_prof_len; 1776 1777 /* whether a parse error occurred while retrieving these elements */ 1778 bool parse_error; 1779 1780 /* 1781 * scratch buffer that can be used for various element parsing related 1782 * tasks, e.g., element de-fragmentation etc. 1783 */ 1784 size_t scratch_len; 1785 u8 *scratch_pos; 1786 u8 scratch[]; 1787 }; 1788 hw_to_local(struct ieee80211_hw * hw)1789 static inline struct ieee80211_local *hw_to_local( 1790 struct ieee80211_hw *hw) 1791 { 1792 return container_of(hw, struct ieee80211_local, hw); 1793 } 1794 to_txq_info(struct ieee80211_txq * txq)1795 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1796 { 1797 return container_of(txq, struct txq_info, txq); 1798 } 1799 txq_has_queue(struct ieee80211_txq * txq)1800 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1801 { 1802 struct txq_info *txqi = to_txq_info(txq); 1803 1804 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1805 } 1806 1807 static inline bool ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1808 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1809 { 1810 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1811 status->flag & RX_FLAG_MACTIME_END); 1812 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1813 RX_FLAG_MACTIME_PLCP_START)); 1814 } 1815 1816 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1817 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1818 1819 /* This function returns the number of multicast stations connected to this 1820 * interface. It returns -1 if that number is not tracked, that is for netdevs 1821 * not in AP or AP_VLAN mode or when using 4addr. 1822 */ 1823 static inline int ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1824 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1825 { 1826 if (sdata->vif.type == NL80211_IFTYPE_AP) 1827 return atomic_read(&sdata->u.ap.num_mcast_sta); 1828 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1829 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1830 return -1; 1831 } 1832 1833 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1834 struct ieee80211_rx_status *status, 1835 unsigned int mpdu_len, 1836 unsigned int mpdu_offset); 1837 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1838 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1839 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1840 u64 changed); 1841 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1842 u64 changed); 1843 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1844 struct ieee80211_link_data *link, 1845 u64 changed); 1846 void ieee80211_configure_filter(struct ieee80211_local *local); 1847 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1848 1849 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1850 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1851 u64 *cookie, gfp_t gfp); 1852 1853 void ieee80211_check_fast_rx(struct sta_info *sta); 1854 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1855 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1856 void ieee80211_clear_fast_rx(struct sta_info *sta); 1857 1858 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1859 const u8 *addr, int *out_link_id); 1860 1861 /* STA code */ 1862 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1863 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1864 struct cfg80211_auth_request *req); 1865 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1866 struct cfg80211_assoc_request *req); 1867 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1868 struct cfg80211_deauth_request *req); 1869 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1870 struct cfg80211_disassoc_request *req); 1871 void ieee80211_send_pspoll(struct ieee80211_local *local, 1872 struct ieee80211_sub_if_data *sdata); 1873 void ieee80211_recalc_ps(struct ieee80211_local *local); 1874 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1875 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1876 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1877 struct sk_buff *skb); 1878 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1879 struct sk_buff *skb); 1880 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1881 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1882 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1883 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1884 __le16 fc, bool acked); 1885 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1886 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1887 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1888 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1889 u8 reason, bool tx); 1890 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1891 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1892 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link); 1893 1894 /* IBSS code */ 1895 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1896 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1897 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1898 const u8 *bssid, const u8 *addr, u32 supp_rates); 1899 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1900 struct cfg80211_ibss_params *params); 1901 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1902 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1903 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1904 struct sk_buff *skb); 1905 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1906 struct cfg80211_csa_settings *csa_settings, 1907 u64 *changed); 1908 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata, 1909 u64 *changed); 1910 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1911 1912 /* OCB code */ 1913 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1914 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1915 const u8 *bssid, const u8 *addr, u32 supp_rates); 1916 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1917 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1918 struct ocb_setup *setup); 1919 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1920 1921 /* mesh code */ 1922 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1923 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1924 struct sk_buff *skb); 1925 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1926 struct cfg80211_csa_settings *csa_settings, 1927 u64 *changed); 1928 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata, 1929 u64 *changed); 1930 1931 /* scan/BSS handling */ 1932 void ieee80211_scan_work(struct work_struct *work); 1933 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1934 const u8 *ssid, u8 ssid_len, 1935 struct ieee80211_channel **channels, 1936 unsigned int n_channels, 1937 enum nl80211_bss_scan_width scan_width); 1938 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1939 struct cfg80211_scan_request *req); 1940 void ieee80211_scan_cancel(struct ieee80211_local *local); 1941 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1942 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1943 1944 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss, 1945 const struct cfg80211_bss_ies *ies, void *data); 1946 1947 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1948 struct ieee80211_bss * 1949 ieee80211_bss_info_update(struct ieee80211_local *local, 1950 struct ieee80211_rx_status *rx_status, 1951 struct ieee80211_mgmt *mgmt, 1952 size_t len, 1953 struct ieee80211_channel *channel); 1954 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1955 struct ieee80211_bss *bss); 1956 1957 /* scheduled scan handling */ 1958 int 1959 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1960 struct cfg80211_sched_scan_request *req); 1961 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1962 struct cfg80211_sched_scan_request *req); 1963 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1964 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1965 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1966 1967 /* off-channel/mgmt-tx */ 1968 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1969 void ieee80211_offchannel_return(struct ieee80211_local *local); 1970 void ieee80211_roc_setup(struct ieee80211_local *local); 1971 void ieee80211_start_next_roc(struct ieee80211_local *local); 1972 void ieee80211_roc_purge(struct ieee80211_local *local, 1973 struct ieee80211_sub_if_data *sdata); 1974 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1975 struct ieee80211_channel *chan, 1976 unsigned int duration, u64 *cookie); 1977 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1978 struct wireless_dev *wdev, u64 cookie); 1979 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1980 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1981 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1982 struct wireless_dev *wdev, u64 cookie); 1983 1984 /* channel switch handling */ 1985 void ieee80211_csa_finalize_work(struct work_struct *work); 1986 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1987 struct cfg80211_csa_settings *params); 1988 1989 /* color change handling */ 1990 void ieee80211_color_change_finalize_work(struct work_struct *work); 1991 void ieee80211_color_collision_detection_work(struct work_struct *work); 1992 1993 /* interface handling */ 1994 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1995 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1996 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \ 1997 NETIF_F_HW_TC) 1998 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1999 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 2000 MAC80211_SUPPORTED_FEATURES_RX) 2001 2002 int ieee80211_iface_init(void); 2003 void ieee80211_iface_exit(void); 2004 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 2005 unsigned char name_assign_type, 2006 struct wireless_dev **new_wdev, enum nl80211_iftype type, 2007 struct vif_params *params); 2008 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 2009 enum nl80211_iftype type); 2010 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 2011 void ieee80211_remove_interfaces(struct ieee80211_local *local); 2012 u32 ieee80211_idle_off(struct ieee80211_local *local); 2013 void ieee80211_recalc_idle(struct ieee80211_local *local); 2014 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 2015 const int offset); 2016 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 2017 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 2018 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 2019 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 2020 2021 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 2022 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 2023 bool update_bss); 2024 void ieee80211_recalc_offload(struct ieee80211_local *local); 2025 ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)2026 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 2027 { 2028 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 2029 } 2030 2031 /* link handling */ 2032 void ieee80211_link_setup(struct ieee80211_link_data *link); 2033 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, 2034 int link_id, 2035 struct ieee80211_link_data *link, 2036 struct ieee80211_bss_conf *link_conf); 2037 void ieee80211_link_stop(struct ieee80211_link_data *link); 2038 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 2039 u16 new_links, u16 dormant_links); 2040 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata); 2041 int __ieee80211_set_active_links(struct ieee80211_vif *vif, u16 active_links); 2042 2043 /* tx handling */ 2044 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 2045 void ieee80211_tx_pending(struct tasklet_struct *t); 2046 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 2047 struct net_device *dev); 2048 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 2049 struct net_device *dev); 2050 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 2051 struct net_device *dev); 2052 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 2053 struct net_device *dev, 2054 u32 info_flags, 2055 u32 ctrl_flags, 2056 u64 *cookie); 2057 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 2058 struct sk_buff_head *skbs); 2059 struct sk_buff * 2060 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2061 struct sk_buff *skb, u32 info_flags); 2062 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2063 int retry_count, int shift, bool send_to_cooked, 2064 struct ieee80211_tx_status *status); 2065 2066 void ieee80211_check_fast_xmit(struct sta_info *sta); 2067 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2068 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2069 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2070 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2071 const u8 *buf, size_t len, 2072 const u8 *dest, __be16 proto, bool unencrypted, 2073 int link_id, u64 *cookie); 2074 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2075 const u8 *buf, size_t len); 2076 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, 2077 struct sta_info *sta, 2078 struct ieee80211_fast_tx *fast_tx, 2079 struct sk_buff *skb, bool ampdu, 2080 const u8 *da, const u8 *sa); 2081 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, 2082 struct sta_info *sta, struct sk_buff *skb); 2083 2084 /* HT */ 2085 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2086 struct ieee80211_sta_ht_cap *ht_cap); 2087 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2088 struct ieee80211_supported_band *sband, 2089 const struct ieee80211_ht_cap *ht_cap_ie, 2090 struct link_sta_info *link_sta); 2091 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2092 const u8 *da, u16 tid, 2093 u16 initiator, u16 reason_code); 2094 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2095 enum ieee80211_smps_mode smps, const u8 *da, 2096 const u8 *bssid); 2097 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2098 enum ieee80211_smps_mode smps_mode_new); 2099 2100 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2101 u16 initiator, u16 reason, bool stop); 2102 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2103 u16 initiator, u16 reason, bool stop); 2104 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2105 u8 dialog_token, u16 timeout, 2106 u16 start_seq_num, u16 ba_policy, u16 tid, 2107 u16 buf_size, bool tx, bool auto_seq, 2108 const struct ieee80211_addba_ext_ie *addbaext); 2109 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2110 enum ieee80211_agg_stop_reason reason); 2111 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2112 struct sta_info *sta, 2113 struct ieee80211_mgmt *mgmt, size_t len); 2114 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2115 struct sta_info *sta, 2116 struct ieee80211_mgmt *mgmt, 2117 size_t len); 2118 void ieee80211_process_addba_request(struct ieee80211_local *local, 2119 struct sta_info *sta, 2120 struct ieee80211_mgmt *mgmt, 2121 size_t len); 2122 2123 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2124 enum ieee80211_agg_stop_reason reason); 2125 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2126 enum ieee80211_agg_stop_reason reason); 2127 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2128 struct tid_ampdu_tx *tid_tx); 2129 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2130 struct tid_ampdu_tx *tid_tx); 2131 void ieee80211_ba_session_work(struct work_struct *work); 2132 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2133 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2134 2135 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2136 enum nl80211_smps_mode 2137 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2138 2139 /* VHT */ 2140 void 2141 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2142 struct ieee80211_supported_band *sband, 2143 const struct ieee80211_vht_cap *vht_cap_ie, 2144 const struct ieee80211_vht_cap *vht_cap_ie2, 2145 struct link_sta_info *link_sta); 2146 enum ieee80211_sta_rx_bandwidth 2147 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta); 2148 enum ieee80211_sta_rx_bandwidth 2149 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta); 2150 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta); 2151 enum ieee80211_sta_rx_bandwidth 2152 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2153 enum nl80211_chan_width 2154 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2155 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2156 struct ieee80211_link_data *link, 2157 struct ieee80211_mgmt *mgmt); 2158 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2159 struct link_sta_info *sta, 2160 u8 opmode, enum nl80211_band band); 2161 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2162 struct link_sta_info *sta, 2163 u8 opmode, enum nl80211_band band); 2164 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2165 struct ieee80211_sta_vht_cap *vht_cap); 2166 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2167 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2168 enum nl80211_chan_width 2169 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2170 2171 /* HE */ 2172 void 2173 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2174 struct ieee80211_supported_band *sband, 2175 const u8 *he_cap_ie, u8 he_cap_len, 2176 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2177 struct link_sta_info *link_sta); 2178 void 2179 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2180 const struct ieee80211_he_spr *he_spr_ie_elem); 2181 2182 void 2183 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2184 const struct ieee80211_he_operation *he_op_ie_elem); 2185 2186 /* S1G */ 2187 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2188 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2189 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2190 struct sk_buff *skb); 2191 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2192 struct sk_buff *skb); 2193 2194 /* Spectrum management */ 2195 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2196 struct ieee80211_mgmt *mgmt, 2197 size_t len); 2198 /** 2199 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2200 * @sdata: the sdata of the interface which has received the frame 2201 * @elems: parsed 802.11 elements received with the frame 2202 * @current_band: indicates the current band 2203 * @vht_cap_info: VHT capabilities of the transmitter 2204 * @conn_flags: contains information about own capabilities and restrictions 2205 * to decide which channel switch announcements can be accepted, using 2206 * flags from &enum ieee80211_conn_flags. 2207 * @bssid: the currently connected bssid (for reporting) 2208 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2209 All of them will be filled with if success only. 2210 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2211 */ 2212 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2213 struct ieee802_11_elems *elems, 2214 enum nl80211_band current_band, 2215 u32 vht_cap_info, 2216 ieee80211_conn_flags_t conn_flags, u8 *bssid, 2217 struct ieee80211_csa_ie *csa_ie); 2218 2219 /* Suspend/resume and hw reconfiguration */ 2220 int ieee80211_reconfig(struct ieee80211_local *local); 2221 void ieee80211_stop_device(struct ieee80211_local *local); 2222 2223 int __ieee80211_suspend(struct ieee80211_hw *hw, 2224 struct cfg80211_wowlan *wowlan); 2225 __ieee80211_resume(struct ieee80211_hw * hw)2226 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2227 { 2228 struct ieee80211_local *local = hw_to_local(hw); 2229 2230 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2231 !test_bit(SCAN_COMPLETED, &local->scanning), 2232 "%s: resume with hardware scan still in progress\n", 2233 wiphy_name(hw->wiphy)); 2234 2235 return ieee80211_reconfig(hw_to_local(hw)); 2236 } 2237 2238 /* utility functions/constants */ 2239 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2240 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2241 int rate, int erp, int short_preamble, 2242 int shift); 2243 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2244 struct ieee80211_tx_queue_params *qparam, 2245 int ac); 2246 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2247 bool bss_notify, bool enable_qos); 2248 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2249 struct sta_info *sta, struct sk_buff *skb); 2250 2251 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2252 struct sk_buff *skb, int tid, int link_id, 2253 enum nl80211_band band); 2254 2255 /* sta_out needs to be checked for ERR_PTR() before using */ 2256 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2257 struct sk_buff *skb, 2258 struct sta_info **sta_out); 2259 2260 static inline void ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2261 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2262 struct sk_buff *skb, int tid, 2263 enum nl80211_band band) 2264 { 2265 rcu_read_lock(); 2266 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2267 rcu_read_unlock(); 2268 } 2269 2270 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2271 struct sk_buff *skb, int tid, int link_id); 2272 ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2273 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2274 struct sk_buff *skb) 2275 { 2276 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2277 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2278 } 2279 2280 /** 2281 * struct ieee80211_elems_parse_params - element parsing parameters 2282 * @start: pointer to the elements 2283 * @len: length of the elements 2284 * @action: %true if the elements came from an action frame 2285 * @filter: bitmap of element IDs to filter out while calculating 2286 * the element CRC 2287 * @crc: CRC starting value 2288 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2289 * represent a non-transmitting BSS in which case the data 2290 * for that non-transmitting BSS is returned 2291 * @link_id: the link ID to parse elements for, if a STA profile 2292 * is present in the multi-link element, or -1 to ignore; 2293 * note that the code currently assumes parsing an association 2294 * (or re-association) response frame if this is given 2295 * @from_ap: frame is received from an AP (currently used only 2296 * for EHT capabilities parsing) 2297 */ 2298 struct ieee80211_elems_parse_params { 2299 const u8 *start; 2300 size_t len; 2301 bool action; 2302 u64 filter; 2303 u32 crc; 2304 struct cfg80211_bss *bss; 2305 int link_id; 2306 bool from_ap; 2307 }; 2308 2309 struct ieee802_11_elems * 2310 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2311 2312 static inline struct ieee802_11_elems * ieee802_11_parse_elems_crc(const u8 * start,size_t len,bool action,u64 filter,u32 crc,struct cfg80211_bss * bss)2313 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2314 u64 filter, u32 crc, 2315 struct cfg80211_bss *bss) 2316 { 2317 struct ieee80211_elems_parse_params params = { 2318 .start = start, 2319 .len = len, 2320 .action = action, 2321 .filter = filter, 2322 .crc = crc, 2323 .bss = bss, 2324 .link_id = -1, 2325 }; 2326 2327 return ieee802_11_parse_elems_full(¶ms); 2328 } 2329 2330 static inline struct ieee802_11_elems * ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct cfg80211_bss * bss)2331 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2332 struct cfg80211_bss *bss) 2333 { 2334 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2335 } 2336 2337 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos, u8 frag_id); 2338 2339 extern const int ieee802_1d_to_ac[8]; 2340 ieee80211_ac_from_tid(int tid)2341 static inline int ieee80211_ac_from_tid(int tid) 2342 { 2343 return ieee802_1d_to_ac[tid & 7]; 2344 } 2345 2346 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2347 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2348 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2349 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2350 struct ieee80211_sub_if_data *sdata, 2351 bool powersave); 2352 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2353 struct ieee80211_sub_if_data *sdata); 2354 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2355 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2356 2357 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2358 unsigned long queues, 2359 enum queue_stop_reason reason, 2360 bool refcounted); 2361 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2362 struct ieee80211_sub_if_data *sdata, 2363 enum queue_stop_reason reason); 2364 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2365 struct ieee80211_sub_if_data *sdata, 2366 enum queue_stop_reason reason); 2367 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2368 unsigned long queues, 2369 enum queue_stop_reason reason, 2370 bool refcounted); 2371 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2372 enum queue_stop_reason reason, 2373 bool refcounted); 2374 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2375 enum queue_stop_reason reason, 2376 bool refcounted); 2377 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2378 struct sk_buff *skb); 2379 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2380 struct sk_buff_head *skbs); 2381 void ieee80211_flush_queues(struct ieee80211_local *local, 2382 struct ieee80211_sub_if_data *sdata, bool drop); 2383 void __ieee80211_flush_queues(struct ieee80211_local *local, 2384 struct ieee80211_sub_if_data *sdata, 2385 unsigned int queues, bool drop); 2386 ieee80211_can_run_worker(struct ieee80211_local * local)2387 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2388 { 2389 /* 2390 * It's unsafe to try to do any work during reconfigure flow. 2391 * When the flow ends the work will be requeued. 2392 */ 2393 if (local->in_reconfig) 2394 return false; 2395 2396 /* 2397 * If quiescing is set, we are racing with __ieee80211_suspend. 2398 * __ieee80211_suspend flushes the workers after setting quiescing, 2399 * and we check quiescing / suspended before enqueing new workers. 2400 * We should abort the worker to avoid the races below. 2401 */ 2402 if (local->quiescing) 2403 return false; 2404 2405 /* 2406 * We might already be suspended if the following scenario occurs: 2407 * __ieee80211_suspend Control path 2408 * 2409 * if (local->quiescing) 2410 * return; 2411 * local->quiescing = true; 2412 * flush_workqueue(); 2413 * queue_work(...); 2414 * local->suspended = true; 2415 * local->quiescing = false; 2416 * worker starts running... 2417 */ 2418 if (local->suspended) 2419 return false; 2420 2421 return true; 2422 } 2423 2424 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2425 void ieee80211_txq_set_params(struct ieee80211_local *local); 2426 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2427 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2428 struct sta_info *sta, 2429 struct txq_info *txq, int tid); 2430 void ieee80211_txq_purge(struct ieee80211_local *local, 2431 struct txq_info *txqi); 2432 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2433 struct ieee80211_sub_if_data *sdata); 2434 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2435 struct txq_info *txqi); 2436 void ieee80211_wake_txqs(struct tasklet_struct *t); 2437 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2438 u16 transaction, u16 auth_alg, u16 status, 2439 const u8 *extra, size_t extra_len, const u8 *bssid, 2440 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2441 u32 tx_flags); 2442 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2443 const u8 *da, const u8 *bssid, 2444 u16 stype, u16 reason, 2445 bool send_frame, u8 *frame_buf); 2446 u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end); 2447 2448 enum { 2449 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2450 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2451 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2452 }; 2453 2454 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2455 size_t buffer_len, 2456 struct ieee80211_scan_ies *ie_desc, 2457 const u8 *ie, size_t ie_len, 2458 u8 bands_used, u32 *rate_masks, 2459 struct cfg80211_chan_def *chandef, 2460 u32 flags); 2461 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2462 const u8 *src, const u8 *dst, 2463 u32 ratemask, 2464 struct ieee80211_channel *chan, 2465 const u8 *ssid, size_t ssid_len, 2466 const u8 *ie, size_t ie_len, 2467 u32 flags); 2468 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2469 struct ieee802_11_elems *elems, 2470 enum nl80211_band band, u32 *basic_rates); 2471 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2472 struct ieee80211_link_data *link, 2473 enum ieee80211_smps_mode smps_mode); 2474 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2475 struct ieee80211_link_data *link); 2476 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2477 int link_id); 2478 2479 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2480 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2481 u16 cap); 2482 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2483 const struct cfg80211_chan_def *chandef, 2484 u16 prot_mode, bool rifs_mode); 2485 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2486 const struct cfg80211_chan_def *chandef); 2487 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2488 u32 cap); 2489 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2490 const struct cfg80211_chan_def *chandef); 2491 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2492 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, 2493 const struct ieee80211_sta_he_cap *he_cap, 2494 u8 *end); 2495 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2496 enum ieee80211_smps_mode smps_mode, 2497 struct sk_buff *skb); 2498 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2499 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef, 2500 const struct ieee80211_sta_eht_cap *eht_cap); 2501 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2502 const struct ieee80211_supported_band *sband, 2503 const u8 *srates, int srates_len, u32 *rates); 2504 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2505 struct sk_buff *skb, bool need_basic, 2506 enum nl80211_band band); 2507 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2508 struct sk_buff *skb, bool need_basic, 2509 enum nl80211_band band); 2510 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2511 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2512 struct ieee80211_sta_s1g_cap *caps, 2513 struct sk_buff *skb); 2514 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2515 struct sk_buff *skb); 2516 u8 *ieee80211_ie_build_s1g_cap(u8 *pos, struct ieee80211_sta_s1g_cap *s1g_cap); 2517 2518 /* channel management */ 2519 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2520 struct cfg80211_chan_def *chandef); 2521 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2522 const struct ieee80211_vht_operation *oper, 2523 const struct ieee80211_ht_operation *htop, 2524 struct cfg80211_chan_def *chandef); 2525 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper, 2526 bool support_160, bool support_320, 2527 struct cfg80211_chan_def *chandef); 2528 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2529 const struct ieee80211_he_operation *he_oper, 2530 const struct ieee80211_eht_operation *eht_oper, 2531 struct cfg80211_chan_def *chandef); 2532 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2533 struct cfg80211_chan_def *chandef); 2534 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2535 2536 int __must_check 2537 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2538 const struct cfg80211_chan_def *chandef, 2539 enum ieee80211_chanctx_mode mode); 2540 int __must_check 2541 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2542 const struct cfg80211_chan_def *chandef, 2543 enum ieee80211_chanctx_mode mode, 2544 bool radar_required); 2545 int __must_check 2546 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2547 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2548 2549 int __must_check 2550 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, 2551 const struct cfg80211_chan_def *chandef, 2552 u64 *changed); 2553 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2554 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2555 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2556 bool clear); 2557 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2558 struct ieee80211_chanctx *ctx); 2559 2560 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2561 struct ieee80211_chanctx *chanctx); 2562 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2563 struct ieee80211_chanctx *ctx, 2564 struct ieee80211_link_data *rsvd_for); 2565 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2566 2567 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2568 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2569 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2570 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2571 struct cfg80211_csa_settings *csa_settings); 2572 2573 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2574 struct ieee80211_sub_if_data *sdata); 2575 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2576 const struct cfg80211_chan_def *chandef, 2577 enum ieee80211_chanctx_mode chanmode, 2578 u8 radar_detect); 2579 int ieee80211_max_num_channels(struct ieee80211_local *local); 2580 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2581 struct ieee80211_chanctx *ctx); 2582 2583 /* TDLS */ 2584 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2585 const u8 *peer, int link_id, 2586 u8 action_code, u8 dialog_token, u16 status_code, 2587 u32 peer_capability, bool initiator, 2588 const u8 *extra_ies, size_t extra_ies_len); 2589 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2590 const u8 *peer, enum nl80211_tdls_operation oper); 2591 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2592 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2593 const u8 *addr, u8 oper_class, 2594 struct cfg80211_chan_def *chandef); 2595 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2596 struct net_device *dev, 2597 const u8 *addr); 2598 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2599 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2600 const u8 *peer, u16 reason); 2601 void 2602 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2603 struct sk_buff *skb); 2604 2605 2606 const char *ieee80211_get_reason_code_string(u16 reason_code); 2607 u16 ieee80211_encode_usf(int val); 2608 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2609 enum nl80211_iftype type); 2610 2611 extern const struct ethtool_ops ieee80211_ethtool_ops; 2612 2613 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2614 struct ieee80211_vif *vif, 2615 struct ieee80211_sta *pubsta, 2616 int len, bool ampdu); 2617 #ifdef CONFIG_MAC80211_NOINLINE 2618 #define debug_noinline noinline 2619 #else 2620 #define debug_noinline 2621 #endif 2622 2623 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2624 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2625 2626 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2627 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2628 const struct ieee80211_sta_he_cap *he_cap, 2629 const struct ieee80211_sta_eht_cap *eht_cap, 2630 u8 *end, 2631 bool for_ap); 2632 2633 void 2634 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2635 struct ieee80211_supported_band *sband, 2636 const u8 *he_cap_ie, u8 he_cap_len, 2637 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2638 u8 eht_cap_len, 2639 struct link_sta_info *link_sta); 2640 #endif /* IEEE80211_I_H */ 2641
