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) 2018-2024 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 <kunit/visibility.h> 30 #include <net/ieee80211_radiotap.h> 31 #include <net/cfg80211.h> 32 #include <net/mac80211.h> 33 #include <net/fq.h> 34 #include "key.h" 35 #include "sta_info.h" 36 #include "debug.h" 37 #include "drop.h" 38 39 extern const struct cfg80211_ops mac80211_config_ops; 40 41 struct ieee80211_local; 42 struct ieee80211_mesh_fast_tx; 43 44 /* Maximum number of broadcast/multicast frames to buffer when some of the 45 * associated stations are using power saving. */ 46 #define AP_MAX_BC_BUFFER 128 47 48 /* Maximum number of frames buffered to all STAs, including multicast frames. 49 * Note: increasing this limit increases the potential memory requirement. Each 50 * frame can be up to about 2 kB long. */ 51 #define TOTAL_MAX_TX_BUFFER 512 52 53 /* Required encryption head and tailroom */ 54 #define IEEE80211_ENCRYPT_HEADROOM 8 55 #define IEEE80211_ENCRYPT_TAILROOM 18 56 57 /* power level hasn't been configured (or set to automatic) */ 58 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 59 60 /* 61 * Some APs experience problems when working with U-APSD. Decreasing the 62 * probability of that happening by using legacy mode for all ACs but VO isn't 63 * enough. 64 * 65 * Cisco 4410N originally forced us to enable VO by default only because it 66 * treated non-VO ACs as legacy. 67 * 68 * However some APs (notably Netgear R7000) silently reclassify packets to 69 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 70 * clients would never see some frames (e.g. ARP responses) or would fetch them 71 * accidentally after a long time. 72 * 73 * It makes little sense to enable u-APSD queues by default because it needs 74 * userspace applications to be aware of it to actually take advantage of the 75 * possible additional powersavings. Implicitly depending on driver autotrigger 76 * frame support doesn't make much sense. 77 */ 78 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 79 80 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 81 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 82 83 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 84 85 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 86 87 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 88 89 enum ieee80211_status_data { 90 IEEE80211_STATUS_TYPE_MASK = 0x00f, 91 IEEE80211_STATUS_TYPE_INVALID = 0, 92 IEEE80211_STATUS_TYPE_SMPS = 1, 93 IEEE80211_STATUS_TYPE_NEG_TTLM = 2, 94 IEEE80211_STATUS_SUBDATA_MASK = 0x1ff0, 95 }; 96 97 static inline bool 98 ieee80211_sta_keep_active(struct sta_info *sta, u8 ac) 99 { 100 /* Keep a station's queues on the active list for deficit accounting 101 * purposes if it was active or queued during the last 100ms. 102 */ 103 return time_before_eq(jiffies, sta->airtime[ac].last_active + HZ / 10); 104 } 105 106 struct ieee80211_bss { 107 u32 device_ts_beacon, device_ts_presp; 108 109 bool wmm_used; 110 bool uapsd_supported; 111 112 #define IEEE80211_MAX_SUPP_RATES 32 113 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 114 size_t supp_rates_len; 115 struct ieee80211_rate *beacon_rate; 116 117 u32 vht_cap_info; 118 119 /* 120 * During association, we save an ERP value from a probe response so 121 * that we can feed ERP info to the driver when handling the 122 * association completes. these fields probably won't be up-to-date 123 * otherwise, you probably don't want to use them. 124 */ 125 bool has_erp_value; 126 u8 erp_value; 127 128 /* Keep track of the corruption of the last beacon/probe response. */ 129 u8 corrupt_data; 130 131 /* Keep track of what bits of information we have valid info for. */ 132 u8 valid_data; 133 }; 134 135 /** 136 * enum ieee80211_bss_corrupt_data_flags - BSS data corruption flags 137 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 138 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 139 * 140 * These are bss flags that are attached to a bss in the 141 * @corrupt_data field of &struct ieee80211_bss. 142 */ 143 enum ieee80211_bss_corrupt_data_flags { 144 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 145 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 146 }; 147 148 /** 149 * enum ieee80211_bss_valid_data_flags - BSS valid data flags 150 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 151 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 152 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 153 * 154 * These are bss flags that are attached to a bss in the 155 * @valid_data field of &struct ieee80211_bss. They show which parts 156 * of the data structure were received as a result of an un-corrupted 157 * beacon/probe response. 158 */ 159 enum ieee80211_bss_valid_data_flags { 160 IEEE80211_BSS_VALID_WMM = BIT(1), 161 IEEE80211_BSS_VALID_RATES = BIT(2), 162 IEEE80211_BSS_VALID_ERP = BIT(3) 163 }; 164 165 typedef unsigned __bitwise ieee80211_tx_result; 166 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 167 #define TX_DROP ((__force ieee80211_tx_result) 1u) 168 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 169 170 #define IEEE80211_TX_UNICAST BIT(1) 171 #define IEEE80211_TX_PS_BUFFERED BIT(2) 172 173 struct ieee80211_tx_data { 174 struct sk_buff *skb; 175 struct sk_buff_head skbs; 176 struct ieee80211_local *local; 177 struct ieee80211_sub_if_data *sdata; 178 struct sta_info *sta; 179 struct ieee80211_key *key; 180 struct ieee80211_tx_rate rate; 181 182 unsigned int flags; 183 }; 184 185 /** 186 * enum ieee80211_packet_rx_flags - packet RX flags 187 * @IEEE80211_RX_AMSDU: a-MSDU packet 188 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 189 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 190 * 191 * These are per-frame flags that are attached to a frame in the 192 * @rx_flags field of &struct ieee80211_rx_status. 193 */ 194 enum ieee80211_packet_rx_flags { 195 IEEE80211_RX_AMSDU = BIT(3), 196 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 197 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 198 }; 199 200 /** 201 * enum ieee80211_rx_flags - RX data flags 202 * 203 * @IEEE80211_RX_CMNTR: received on cooked monitor already 204 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 205 * to cfg80211_report_obss_beacon(). 206 * 207 * These flags are used across handling multiple interfaces 208 * for a single frame. 209 */ 210 enum ieee80211_rx_flags { 211 IEEE80211_RX_CMNTR = BIT(0), 212 IEEE80211_RX_BEACON_REPORTED = BIT(1), 213 }; 214 215 struct ieee80211_rx_data { 216 struct list_head *list; 217 struct sk_buff *skb; 218 struct ieee80211_local *local; 219 struct ieee80211_sub_if_data *sdata; 220 struct ieee80211_link_data *link; 221 struct sta_info *sta; 222 struct link_sta_info *link_sta; 223 struct ieee80211_key *key; 224 225 unsigned int flags; 226 227 /* 228 * Index into sequence numbers array, 0..16 229 * since the last (16) is used for non-QoS, 230 * will be 16 on non-QoS frames. 231 */ 232 int seqno_idx; 233 234 /* 235 * Index into the security IV/PN arrays, 0..16 236 * since the last (16) is used for CCMP-encrypted 237 * management frames, will be set to 16 on mgmt 238 * frames and 0 on non-QoS frames. 239 */ 240 int security_idx; 241 242 int link_id; 243 244 union { 245 struct { 246 u32 iv32; 247 u16 iv16; 248 } tkip; 249 struct { 250 u8 pn[IEEE80211_CCMP_PN_LEN]; 251 } ccm_gcm; 252 }; 253 }; 254 255 struct ieee80211_csa_settings { 256 const u16 *counter_offsets_beacon; 257 const u16 *counter_offsets_presp; 258 259 int n_counter_offsets_beacon; 260 int n_counter_offsets_presp; 261 262 u8 count; 263 }; 264 265 struct ieee80211_color_change_settings { 266 u16 counter_offset_beacon; 267 u16 counter_offset_presp; 268 u8 count; 269 }; 270 271 struct beacon_data { 272 u8 *head, *tail; 273 int head_len, tail_len; 274 struct ieee80211_meshconf_ie *meshconf; 275 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 276 u8 cntdwn_current_counter; 277 struct cfg80211_mbssid_elems *mbssid_ies; 278 struct cfg80211_rnr_elems *rnr_ies; 279 struct rcu_head rcu_head; 280 }; 281 282 struct probe_resp { 283 struct rcu_head rcu_head; 284 int len; 285 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 286 u8 data[]; 287 }; 288 289 struct fils_discovery_data { 290 struct rcu_head rcu_head; 291 int len; 292 u8 data[]; 293 }; 294 295 struct unsol_bcast_probe_resp_data { 296 struct rcu_head rcu_head; 297 int len; 298 u8 data[]; 299 }; 300 301 struct ps_data { 302 /* yes, this looks ugly, but guarantees that we can later use 303 * bitmap_empty :) 304 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 305 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 306 __aligned(__alignof__(unsigned long)); 307 struct sk_buff_head bc_buf; 308 atomic_t num_sta_ps; /* number of stations in PS mode */ 309 int dtim_count; 310 bool dtim_bc_mc; 311 }; 312 313 struct ieee80211_if_ap { 314 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 315 316 struct ps_data ps; 317 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 318 319 bool multicast_to_unicast; 320 bool active; 321 }; 322 323 struct ieee80211_if_vlan { 324 struct list_head list; /* write-protected with RTNL and local->mtx */ 325 326 /* used for all tx if the VLAN is configured to 4-addr mode */ 327 struct sta_info __rcu *sta; 328 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 329 }; 330 331 struct mesh_stats { 332 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 333 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 334 __u32 fwded_frames; /* Mesh total forwarded frames */ 335 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 336 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 337 }; 338 339 #define PREQ_Q_F_START 0x1 340 #define PREQ_Q_F_REFRESH 0x2 341 struct mesh_preq_queue { 342 struct list_head list; 343 u8 dst[ETH_ALEN]; 344 u8 flags; 345 }; 346 347 struct ieee80211_roc_work { 348 struct list_head list; 349 350 struct ieee80211_sub_if_data *sdata; 351 352 struct ieee80211_channel *chan; 353 354 bool started, abort, hw_begun, notified; 355 bool on_channel; 356 357 unsigned long start_time; 358 359 u32 duration, req_duration; 360 struct sk_buff *frame; 361 u64 cookie, mgmt_tx_cookie; 362 enum ieee80211_roc_type type; 363 }; 364 365 /* flags used in struct ieee80211_if_managed.flags */ 366 enum ieee80211_sta_flags { 367 IEEE80211_STA_CONNECTION_POLL = BIT(1), 368 IEEE80211_STA_CONTROL_PORT = BIT(2), 369 IEEE80211_STA_MFP_ENABLED = BIT(6), 370 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 371 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 372 IEEE80211_STA_ENABLE_RRM = BIT(15), 373 }; 374 375 enum ieee80211_conn_mode { 376 IEEE80211_CONN_MODE_S1G, 377 IEEE80211_CONN_MODE_LEGACY, 378 IEEE80211_CONN_MODE_HT, 379 IEEE80211_CONN_MODE_VHT, 380 IEEE80211_CONN_MODE_HE, 381 IEEE80211_CONN_MODE_EHT, 382 }; 383 384 #define IEEE80211_CONN_MODE_HIGHEST IEEE80211_CONN_MODE_EHT 385 386 enum ieee80211_conn_bw_limit { 387 IEEE80211_CONN_BW_LIMIT_20, 388 IEEE80211_CONN_BW_LIMIT_40, 389 IEEE80211_CONN_BW_LIMIT_80, 390 IEEE80211_CONN_BW_LIMIT_160, /* also 80+80 */ 391 IEEE80211_CONN_BW_LIMIT_320, 392 }; 393 394 struct ieee80211_conn_settings { 395 enum ieee80211_conn_mode mode; 396 enum ieee80211_conn_bw_limit bw_limit; 397 }; 398 399 extern const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited; 400 401 struct ieee80211_mgd_auth_data { 402 struct cfg80211_bss *bss; 403 unsigned long timeout; 404 int tries; 405 u16 algorithm, expected_transaction; 406 407 u8 key[WLAN_KEY_LEN_WEP104]; 408 u8 key_len, key_idx; 409 bool done, waiting; 410 bool peer_confirmed; 411 bool timeout_started; 412 int link_id; 413 414 u8 ap_addr[ETH_ALEN] __aligned(2); 415 416 u16 sae_trans, sae_status; 417 size_t data_len; 418 u8 data[]; 419 }; 420 421 struct ieee80211_mgd_assoc_data { 422 struct { 423 struct cfg80211_bss *bss; 424 425 u8 addr[ETH_ALEN] __aligned(2); 426 427 u8 ap_ht_param; 428 429 struct ieee80211_vht_cap ap_vht_cap; 430 431 size_t elems_len; 432 u8 *elems; /* pointing to inside ie[] below */ 433 434 struct ieee80211_conn_settings conn; 435 436 u16 status; 437 438 bool disabled; 439 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 440 441 u8 ap_addr[ETH_ALEN] __aligned(2); 442 443 /* this is for a workaround, so we use it only for non-MLO */ 444 const u8 *supp_rates; 445 u8 supp_rates_len; 446 447 unsigned long timeout; 448 int tries; 449 450 u8 prev_ap_addr[ETH_ALEN]; 451 u8 ssid[IEEE80211_MAX_SSID_LEN]; 452 u8 ssid_len; 453 bool wmm, uapsd; 454 bool need_beacon; 455 bool synced; 456 bool timeout_started; 457 bool comeback; /* whether the AP has requested association comeback */ 458 bool s1g; 459 bool spp_amsdu; 460 461 unsigned int assoc_link_id; 462 463 u8 fils_nonces[2 * FILS_NONCE_LEN]; 464 u8 fils_kek[FILS_MAX_KEK_LEN]; 465 size_t fils_kek_len; 466 467 size_t ie_len; 468 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 469 u8 ie[]; 470 }; 471 472 struct ieee80211_sta_tx_tspec { 473 /* timestamp of the first packet in the time slice */ 474 unsigned long time_slice_start; 475 476 u32 admitted_time; /* in usecs, unlike over the air */ 477 u8 tsid; 478 s8 up; /* signed to be able to invalidate with -1 during teardown */ 479 480 /* consumed TX time in microseconds in the time slice */ 481 u32 consumed_tx_time; 482 enum { 483 TX_TSPEC_ACTION_NONE = 0, 484 TX_TSPEC_ACTION_DOWNGRADE, 485 TX_TSPEC_ACTION_STOP_DOWNGRADE, 486 } action; 487 bool downgraded; 488 }; 489 490 /* Advertised TID-to-link mapping info */ 491 struct ieee80211_adv_ttlm_info { 492 /* time in TUs at which the new mapping is established, or 0 if there is 493 * no planned advertised TID-to-link mapping 494 */ 495 u16 switch_time; 496 u32 duration; /* duration of the planned T2L map in TUs */ 497 u16 map; /* map of usable links for all TIDs */ 498 bool active; /* whether the advertised mapping is active or not */ 499 }; 500 501 DECLARE_EWMA(beacon_signal, 4, 4) 502 503 struct ieee80211_if_managed { 504 struct timer_list timer; 505 struct timer_list conn_mon_timer; 506 struct timer_list bcn_mon_timer; 507 struct wiphy_work monitor_work; 508 struct wiphy_work beacon_connection_loss_work; 509 struct wiphy_work csa_connection_drop_work; 510 511 unsigned long beacon_timeout; 512 unsigned long probe_timeout; 513 int probe_send_count; 514 bool nullfunc_failed; 515 u8 connection_loss:1, 516 driver_disconnect:1, 517 reconnect:1, 518 associated:1; 519 520 struct ieee80211_mgd_auth_data *auth_data; 521 struct ieee80211_mgd_assoc_data *assoc_data; 522 523 bool powersave; /* powersave requested for this iface */ 524 bool broken_ap; /* AP is broken -- turn off powersave */ 525 526 unsigned int flags; 527 528 u16 mcast_seq_last; 529 530 bool status_acked; 531 bool status_received; 532 __le16 status_fc; 533 534 enum { 535 IEEE80211_MFP_DISABLED, 536 IEEE80211_MFP_OPTIONAL, 537 IEEE80211_MFP_REQUIRED 538 } mfp; /* management frame protection */ 539 540 /* 541 * Bitmask of enabled u-apsd queues, 542 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 543 * to take effect. 544 */ 545 unsigned int uapsd_queues; 546 547 /* 548 * Maximum number of buffered frames AP can deliver during a 549 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 550 * Needs a new association to take effect. 551 */ 552 unsigned int uapsd_max_sp_len; 553 554 u8 use_4addr; 555 556 /* 557 * State variables for keeping track of RSSI of the AP currently 558 * connected to and informing driver when RSSI has gone 559 * below/above a certain threshold. 560 */ 561 int rssi_min_thold, rssi_max_thold; 562 563 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 564 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 565 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 566 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 567 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 568 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 569 570 /* TDLS support */ 571 u8 tdls_peer[ETH_ALEN] __aligned(2); 572 struct wiphy_delayed_work tdls_peer_del_work; 573 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 574 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 575 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 576 bool tdls_wider_bw_prohibited; 577 578 /* WMM-AC TSPEC support */ 579 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 580 /* Use a separate work struct so that we can do something here 581 * while the sdata->work is flushing the queues, for example. 582 * otherwise, in scenarios where we hardly get any traffic out 583 * on the BE queue, but there's a lot of VO traffic, we might 584 * get stuck in a downgraded situation and flush takes forever. 585 */ 586 struct wiphy_delayed_work tx_tspec_wk; 587 588 /* Information elements from the last transmitted (Re)Association 589 * Request frame. 590 */ 591 u8 *assoc_req_ies; 592 size_t assoc_req_ies_len; 593 594 struct wiphy_delayed_work ml_reconf_work; 595 u16 removed_links; 596 597 /* TID-to-link mapping support */ 598 struct wiphy_delayed_work ttlm_work; 599 struct ieee80211_adv_ttlm_info ttlm_info; 600 struct wiphy_work teardown_ttlm_work; 601 602 /* dialog token enumerator for neg TTLM request */ 603 u8 dialog_token_alloc; 604 struct wiphy_delayed_work neg_ttlm_timeout_work; 605 }; 606 607 struct ieee80211_if_ibss { 608 struct timer_list timer; 609 struct wiphy_work csa_connection_drop_work; 610 611 unsigned long last_scan_completed; 612 613 u32 basic_rates; 614 615 bool fixed_bssid; 616 bool fixed_channel; 617 bool privacy; 618 619 bool control_port; 620 bool userspace_handles_dfs; 621 622 u8 bssid[ETH_ALEN] __aligned(2); 623 u8 ssid[IEEE80211_MAX_SSID_LEN]; 624 u8 ssid_len, ie_len; 625 u8 *ie; 626 struct cfg80211_chan_def chandef; 627 628 unsigned long ibss_join_req; 629 /* probe response/beacon for IBSS */ 630 struct beacon_data __rcu *presp; 631 632 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 633 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 634 635 spinlock_t incomplete_lock; 636 struct list_head incomplete_stations; 637 638 enum { 639 IEEE80211_IBSS_MLME_SEARCH, 640 IEEE80211_IBSS_MLME_JOINED, 641 } state; 642 }; 643 644 /** 645 * struct ieee80211_if_ocb - OCB mode state 646 * 647 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 648 * @wrkq_flags: OCB deferred task action 649 * @incomplete_lock: delayed STA insertion lock 650 * @incomplete_stations: list of STAs waiting for delayed insertion 651 * @joined: indication if the interface is connected to an OCB network 652 */ 653 struct ieee80211_if_ocb { 654 struct timer_list housekeeping_timer; 655 unsigned long wrkq_flags; 656 657 spinlock_t incomplete_lock; 658 struct list_head incomplete_stations; 659 660 bool joined; 661 }; 662 663 /** 664 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 665 * 666 * these declarations define the interface, which enables 667 * vendor-specific mesh synchronization 668 * 669 * @rx_bcn_presp: beacon/probe response was received 670 * @adjust_tsf: TSF adjustment method 671 */ 672 struct ieee80211_mesh_sync_ops { 673 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 674 struct ieee80211_mgmt *mgmt, unsigned int len, 675 const struct ieee80211_meshconf_ie *mesh_cfg, 676 struct ieee80211_rx_status *rx_status); 677 678 /* should be called with beacon_data under RCU read lock */ 679 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 680 struct beacon_data *beacon); 681 /* add other framework functions here */ 682 }; 683 684 struct mesh_csa_settings { 685 struct rcu_head rcu_head; 686 struct cfg80211_csa_settings settings; 687 }; 688 689 /** 690 * struct mesh_table - mesh hash table 691 * 692 * @known_gates: list of known mesh gates and their mpaths by the station. The 693 * gate's mpath may or may not be resolved and active. 694 * @gates_lock: protects updates to known_gates 695 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 696 * @walk_head: linked list containing all mesh_path objects 697 * @walk_lock: lock protecting walk_head 698 * @entries: number of entries in the table 699 */ 700 struct mesh_table { 701 struct hlist_head known_gates; 702 spinlock_t gates_lock; 703 struct rhashtable rhead; 704 struct hlist_head walk_head; 705 spinlock_t walk_lock; 706 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 707 }; 708 709 /** 710 * struct mesh_tx_cache - mesh fast xmit header cache 711 * 712 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key 713 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects 714 * @walk_lock: lock protecting walk_head and rht 715 */ 716 struct mesh_tx_cache { 717 struct rhashtable rht; 718 struct hlist_head walk_head; 719 spinlock_t walk_lock; 720 }; 721 722 struct ieee80211_if_mesh { 723 struct timer_list housekeeping_timer; 724 struct timer_list mesh_path_timer; 725 struct timer_list mesh_path_root_timer; 726 727 unsigned long wrkq_flags; 728 unsigned long mbss_changed[64 / BITS_PER_LONG]; 729 730 bool userspace_handles_dfs; 731 732 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 733 size_t mesh_id_len; 734 /* Active Path Selection Protocol Identifier */ 735 u8 mesh_pp_id; 736 /* Active Path Selection Metric Identifier */ 737 u8 mesh_pm_id; 738 /* Congestion Control Mode Identifier */ 739 u8 mesh_cc_id; 740 /* Synchronization Protocol Identifier */ 741 u8 mesh_sp_id; 742 /* Authentication Protocol Identifier */ 743 u8 mesh_auth_id; 744 /* Local mesh Sequence Number */ 745 u32 sn; 746 /* Last used PREQ ID */ 747 u32 preq_id; 748 atomic_t mpaths; 749 /* Timestamp of last SN update */ 750 unsigned long last_sn_update; 751 /* Time when it's ok to send next PERR */ 752 unsigned long next_perr; 753 /* Timestamp of last PREQ sent */ 754 unsigned long last_preq; 755 struct mesh_rmc *rmc; 756 spinlock_t mesh_preq_queue_lock; 757 struct mesh_preq_queue preq_queue; 758 int preq_queue_len; 759 struct mesh_stats mshstats; 760 struct mesh_config mshcfg; 761 atomic_t estab_plinks; 762 atomic_t mesh_seqnum; 763 bool accepting_plinks; 764 int num_gates; 765 struct beacon_data __rcu *beacon; 766 const u8 *ie; 767 u8 ie_len; 768 enum { 769 IEEE80211_MESH_SEC_NONE = 0x0, 770 IEEE80211_MESH_SEC_AUTHED = 0x1, 771 IEEE80211_MESH_SEC_SECURED = 0x2, 772 } security; 773 bool user_mpm; 774 /* Extensible Synchronization Framework */ 775 const struct ieee80211_mesh_sync_ops *sync_ops; 776 s64 sync_offset_clockdrift_max; 777 spinlock_t sync_offset_lock; 778 /* mesh power save */ 779 enum nl80211_mesh_power_mode nonpeer_pm; 780 int ps_peers_light_sleep; 781 int ps_peers_deep_sleep; 782 struct ps_data ps; 783 /* Channel Switching Support */ 784 struct mesh_csa_settings __rcu *csa; 785 enum { 786 IEEE80211_MESH_CSA_ROLE_NONE, 787 IEEE80211_MESH_CSA_ROLE_INIT, 788 IEEE80211_MESH_CSA_ROLE_REPEATER, 789 } csa_role; 790 u8 chsw_ttl; 791 u16 pre_value; 792 793 /* offset from skb->data while building IE */ 794 int meshconf_offset; 795 796 struct mesh_table mesh_paths; 797 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 798 int mesh_paths_generation; 799 int mpp_paths_generation; 800 struct mesh_tx_cache tx_cache; 801 }; 802 803 #ifdef CONFIG_MAC80211_MESH 804 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 805 do { (msh)->mshstats.name++; } while (0) 806 #else 807 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 808 do { } while (0) 809 #endif 810 811 /** 812 * enum ieee80211_sub_if_data_flags - virtual interface flags 813 * 814 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 815 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 816 * associated stations and deliver multicast frames both 817 * back to wireless media and to the local net stack. 818 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 819 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 820 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 821 * recovery 822 */ 823 enum ieee80211_sub_if_data_flags { 824 IEEE80211_SDATA_ALLMULTI = BIT(0), 825 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 826 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 827 IEEE80211_SDATA_IN_DRIVER = BIT(5), 828 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 829 }; 830 831 /** 832 * enum ieee80211_sdata_state_bits - virtual interface state bits 833 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 834 * mirrors netif_running() but is separate for interface type 835 * change handling while the interface is up 836 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 837 * mode, so queues are stopped 838 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 839 * to offchannel, reset when offchannel returns 840 */ 841 enum ieee80211_sdata_state_bits { 842 SDATA_STATE_RUNNING, 843 SDATA_STATE_OFFCHANNEL, 844 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 845 }; 846 847 /** 848 * enum ieee80211_chanctx_mode - channel context configuration mode 849 * 850 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 851 * multiple interfaces 852 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 853 * only by a single interface. This can be used for example for 854 * non-fixed channel IBSS. 855 */ 856 enum ieee80211_chanctx_mode { 857 IEEE80211_CHANCTX_SHARED, 858 IEEE80211_CHANCTX_EXCLUSIVE 859 }; 860 861 /** 862 * enum ieee80211_chanctx_replace_state - channel context replacement state 863 * 864 * This is used for channel context in-place reservations that require channel 865 * context switch/swap. 866 * 867 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 868 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 869 * by a (not yet registered) channel context pointed by %replace_ctx. 870 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 871 * replaces an existing channel context pointed to by %replace_ctx. 872 */ 873 enum ieee80211_chanctx_replace_state { 874 IEEE80211_CHANCTX_REPLACE_NONE, 875 IEEE80211_CHANCTX_WILL_BE_REPLACED, 876 IEEE80211_CHANCTX_REPLACES_OTHER, 877 }; 878 879 struct ieee80211_chanctx { 880 struct list_head list; 881 struct rcu_head rcu_head; 882 883 struct list_head assigned_links; 884 struct list_head reserved_links; 885 886 enum ieee80211_chanctx_replace_state replace_state; 887 struct ieee80211_chanctx *replace_ctx; 888 889 enum ieee80211_chanctx_mode mode; 890 bool driver_present; 891 892 /* temporary data for search algorithm etc. */ 893 struct ieee80211_chan_req req; 894 895 struct ieee80211_chanctx_conf conf; 896 }; 897 898 struct mac80211_qos_map { 899 struct cfg80211_qos_map qos_map; 900 struct rcu_head rcu_head; 901 }; 902 903 enum txq_info_flags { 904 IEEE80211_TXQ_STOP, 905 IEEE80211_TXQ_AMPDU, 906 IEEE80211_TXQ_NO_AMSDU, 907 IEEE80211_TXQ_DIRTY, 908 }; 909 910 /** 911 * struct txq_info - per tid queue 912 * 913 * @tin: contains packets split into multiple flows 914 * @def_cvars: codel vars for the @tin's default_flow 915 * @cstats: code statistics for this queue 916 * @frags: used to keep fragments created after dequeue 917 * @schedule_order: used with ieee80211_local->active_txqs 918 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 919 * @flags: TXQ flags from &enum txq_info_flags 920 * @txq: the driver visible part 921 */ 922 struct txq_info { 923 struct fq_tin tin; 924 struct codel_vars def_cvars; 925 struct codel_stats cstats; 926 927 u16 schedule_round; 928 struct list_head schedule_order; 929 930 struct sk_buff_head frags; 931 932 unsigned long flags; 933 934 /* keep last! */ 935 struct ieee80211_txq txq; 936 }; 937 938 struct ieee80211_if_mntr { 939 u32 flags; 940 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 941 942 struct list_head list; 943 }; 944 945 /** 946 * struct ieee80211_if_nan - NAN state 947 * 948 * @conf: current NAN configuration 949 * @func_lock: lock for @func_inst_ids 950 * @function_inst_ids: a bitmap of available instance_id's 951 */ 952 struct ieee80211_if_nan { 953 struct cfg80211_nan_conf conf; 954 955 /* protects function_inst_ids */ 956 spinlock_t func_lock; 957 struct idr function_inst_ids; 958 }; 959 960 struct ieee80211_link_data_managed { 961 u8 bssid[ETH_ALEN] __aligned(2); 962 963 u8 dtim_period; 964 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 965 driver_smps_mode; /* smps mode request */ 966 967 struct ieee80211_conn_settings conn; 968 969 s16 p2p_noa_index; 970 971 bool tdls_chan_switch_prohibited; 972 973 bool have_beacon; 974 bool tracking_signal_avg; 975 bool disable_wmm_tracking; 976 bool operating_11g_mode; 977 978 struct { 979 struct wiphy_delayed_work switch_work; 980 struct cfg80211_chan_def ap_chandef; 981 struct ieee80211_parsed_tpe tpe; 982 unsigned long time; 983 bool waiting_bcn; 984 bool ignored_same_chan; 985 bool blocked_tx; 986 } csa; 987 988 struct wiphy_work request_smps_work; 989 /* used to reconfigure hardware SM PS */ 990 struct wiphy_work recalc_smps; 991 992 bool beacon_crc_valid; 993 u32 beacon_crc; 994 struct ewma_beacon_signal ave_beacon_signal; 995 int last_ave_beacon_signal; 996 997 /* 998 * Number of Beacon frames used in ave_beacon_signal. This can be used 999 * to avoid generating less reliable cqm events that would be based 1000 * only on couple of received frames. 1001 */ 1002 unsigned int count_beacon_signal; 1003 1004 /* Number of times beacon loss was invoked. */ 1005 unsigned int beacon_loss_count; 1006 1007 /* 1008 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 1009 * that triggered a cqm event. 0 indicates that no event has been 1010 * generated for the current association. 1011 */ 1012 int last_cqm_event_signal; 1013 1014 int wmm_last_param_set; 1015 int mu_edca_last_param_set; 1016 1017 u8 bss_param_ch_cnt; 1018 }; 1019 1020 struct ieee80211_link_data_ap { 1021 struct beacon_data __rcu *beacon; 1022 struct probe_resp __rcu *probe_resp; 1023 struct fils_discovery_data __rcu *fils_discovery; 1024 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 1025 1026 /* to be used after channel switch. */ 1027 struct cfg80211_beacon_data *next_beacon; 1028 }; 1029 1030 struct ieee80211_link_data { 1031 struct ieee80211_sub_if_data *sdata; 1032 unsigned int link_id; 1033 1034 struct list_head assigned_chanctx_list; /* protected by wiphy mutex */ 1035 struct list_head reserved_chanctx_list; /* protected by wiphy mutex */ 1036 1037 /* multicast keys only */ 1038 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 1039 NUM_DEFAULT_MGMT_KEYS + 1040 NUM_DEFAULT_BEACON_KEYS]; 1041 struct ieee80211_key __rcu *default_multicast_key; 1042 struct ieee80211_key __rcu *default_mgmt_key; 1043 struct ieee80211_key __rcu *default_beacon_key; 1044 1045 1046 bool operating_11g_mode; 1047 1048 struct { 1049 struct wiphy_work finalize_work; 1050 struct ieee80211_chan_req chanreq; 1051 } csa; 1052 1053 struct wiphy_work color_change_finalize_work; 1054 struct delayed_work color_collision_detect_work; 1055 u64 color_bitmap; 1056 1057 /* context reservation -- protected with wiphy mutex */ 1058 struct ieee80211_chanctx *reserved_chanctx; 1059 struct ieee80211_chan_req reserved; 1060 bool reserved_radar_required; 1061 bool reserved_ready; 1062 1063 u8 needed_rx_chains; 1064 enum ieee80211_smps_mode smps_mode; 1065 1066 int user_power_level; /* in dBm */ 1067 int ap_power_level; /* in dBm */ 1068 1069 bool radar_required; 1070 1071 union { 1072 struct ieee80211_link_data_managed mgd; 1073 struct ieee80211_link_data_ap ap; 1074 } u; 1075 1076 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 1077 1078 struct ieee80211_bss_conf *conf; 1079 1080 #ifdef CONFIG_MAC80211_DEBUGFS 1081 struct dentry *debugfs_dir; 1082 #endif 1083 }; 1084 1085 struct ieee80211_sub_if_data { 1086 struct list_head list; 1087 1088 struct wireless_dev wdev; 1089 1090 /* keys */ 1091 struct list_head key_list; 1092 1093 /* count for keys needing tailroom space allocation */ 1094 int crypto_tx_tailroom_needed_cnt; 1095 int crypto_tx_tailroom_pending_dec; 1096 struct wiphy_delayed_work dec_tailroom_needed_wk; 1097 1098 struct net_device *dev; 1099 struct ieee80211_local *local; 1100 1101 unsigned int flags; 1102 1103 unsigned long state; 1104 1105 bool csa_blocked_queues; 1106 1107 char name[IFNAMSIZ]; 1108 1109 struct ieee80211_fragment_cache frags; 1110 1111 /* TID bitmap for NoAck policy */ 1112 u16 noack_map; 1113 1114 /* bit field of ACM bits (BIT(802.1D tag)) */ 1115 u8 wmm_acm; 1116 1117 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1118 struct ieee80211_key __rcu *default_unicast_key; 1119 1120 u16 sequence_number; 1121 u16 mld_mcast_seq; 1122 __be16 control_port_protocol; 1123 bool control_port_no_encrypt; 1124 bool control_port_no_preauth; 1125 bool control_port_over_nl80211; 1126 1127 atomic_t num_tx_queued; 1128 struct mac80211_qos_map __rcu *qos_map; 1129 1130 struct wiphy_work work; 1131 struct sk_buff_head skb_queue; 1132 struct sk_buff_head status_queue; 1133 1134 /* 1135 * AP this belongs to: self in AP mode and 1136 * corresponding AP in VLAN mode, NULL for 1137 * all others (might be needed later in IBSS) 1138 */ 1139 struct ieee80211_if_ap *bss; 1140 1141 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1142 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1143 1144 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1145 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1146 1147 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1148 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1149 1150 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1151 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1152 bool beacon_rate_set; 1153 1154 union { 1155 struct ieee80211_if_ap ap; 1156 struct ieee80211_if_vlan vlan; 1157 struct ieee80211_if_managed mgd; 1158 struct ieee80211_if_ibss ibss; 1159 struct ieee80211_if_mesh mesh; 1160 struct ieee80211_if_ocb ocb; 1161 struct ieee80211_if_mntr mntr; 1162 struct ieee80211_if_nan nan; 1163 } u; 1164 1165 struct ieee80211_link_data deflink; 1166 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1167 1168 struct wiphy_delayed_work dfs_cac_timer_work; 1169 1170 /* for ieee80211_set_active_links_async() */ 1171 struct wiphy_work activate_links_work; 1172 u16 desired_active_links; 1173 1174 u16 restart_active_links; 1175 1176 #ifdef CONFIG_MAC80211_DEBUGFS 1177 struct { 1178 struct dentry *subdir_stations; 1179 struct dentry *default_unicast_key; 1180 struct dentry *default_multicast_key; 1181 struct dentry *default_mgmt_key; 1182 struct dentry *default_beacon_key; 1183 } debugfs; 1184 #endif 1185 1186 /* must be last, dynamically sized area in this! */ 1187 struct ieee80211_vif vif; 1188 }; 1189 1190 static inline 1191 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1192 { 1193 return container_of(p, struct ieee80211_sub_if_data, vif); 1194 } 1195 1196 #define sdata_dereference(p, sdata) \ 1197 wiphy_dereference(sdata->local->hw.wiphy, p) 1198 1199 #define for_each_sdata_link(_local, _link) \ 1200 /* outer loop just to define the variables ... */ \ 1201 for (struct ieee80211_sub_if_data *___sdata = NULL; \ 1202 !___sdata; \ 1203 ___sdata = (void *)~0 /* always stop */) \ 1204 list_for_each_entry(___sdata, &(_local)->interfaces, list) \ 1205 if (ieee80211_sdata_running(___sdata)) \ 1206 for (int ___link_id = 0; \ 1207 ___link_id < ARRAY_SIZE(___sdata->link); \ 1208 ___link_id++) \ 1209 if ((_link = wiphy_dereference((local)->hw.wiphy, \ 1210 ___sdata->link[___link_id]))) 1211 1212 static inline int 1213 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems, 1214 struct cfg80211_rnr_elems *rnr_elems, 1215 u8 i) 1216 { 1217 int len = 0; 1218 1219 if (!elems || !elems->cnt || i > elems->cnt) 1220 return 0; 1221 1222 if (i < elems->cnt) { 1223 len = elems->elem[i].len; 1224 if (rnr_elems) { 1225 len += rnr_elems->elem[i].len; 1226 for (i = elems->cnt; i < rnr_elems->cnt; i++) 1227 len += rnr_elems->elem[i].len; 1228 } 1229 return len; 1230 } 1231 1232 /* i == elems->cnt, calculate total length of all MBSSID elements */ 1233 for (i = 0; i < elems->cnt; i++) 1234 len += elems->elem[i].len; 1235 1236 if (rnr_elems) { 1237 for (i = 0; i < rnr_elems->cnt; i++) 1238 len += rnr_elems->elem[i].len; 1239 } 1240 1241 return len; 1242 } 1243 1244 enum { 1245 IEEE80211_RX_MSG = 1, 1246 IEEE80211_TX_STATUS_MSG = 2, 1247 }; 1248 1249 enum queue_stop_reason { 1250 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1251 IEEE80211_QUEUE_STOP_REASON_PS, 1252 IEEE80211_QUEUE_STOP_REASON_CSA, 1253 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1254 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1255 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1256 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1257 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1258 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1259 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1260 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1261 1262 IEEE80211_QUEUE_STOP_REASONS, 1263 }; 1264 1265 #ifdef CONFIG_MAC80211_LEDS 1266 struct tpt_led_trigger { 1267 char name[32]; 1268 const struct ieee80211_tpt_blink *blink_table; 1269 unsigned int blink_table_len; 1270 struct timer_list timer; 1271 struct ieee80211_local *local; 1272 unsigned long prev_traffic; 1273 unsigned long tx_bytes, rx_bytes; 1274 unsigned int active, want; 1275 bool running; 1276 }; 1277 #endif 1278 1279 /** 1280 * enum mac80211_scan_flags - currently active scan mode 1281 * 1282 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1283 * well be on the operating channel 1284 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1285 * determine if we are on the operating channel or not 1286 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1287 * channel. This should not interrupt normal traffic. 1288 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1289 * that the scan completed. 1290 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1291 * a scan complete for an aborted scan. 1292 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1293 * cancelled. 1294 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1295 * and could send a probe request after receiving a beacon. 1296 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1297 */ 1298 enum mac80211_scan_flags { 1299 SCAN_SW_SCANNING, 1300 SCAN_HW_SCANNING, 1301 SCAN_ONCHANNEL_SCANNING, 1302 SCAN_COMPLETED, 1303 SCAN_ABORTED, 1304 SCAN_HW_CANCELLED, 1305 SCAN_BEACON_WAIT, 1306 SCAN_BEACON_DONE, 1307 }; 1308 1309 /** 1310 * enum mac80211_scan_state - scan state machine states 1311 * 1312 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1313 * determines if we should keep on scanning or switch back to the 1314 * operating channel 1315 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1316 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1317 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1318 * send out data 1319 * @SCAN_RESUME: Resume the scan and scan the next channel 1320 * @SCAN_ABORT: Abort the scan and go back to operating channel 1321 */ 1322 enum mac80211_scan_state { 1323 SCAN_DECISION, 1324 SCAN_SET_CHANNEL, 1325 SCAN_SEND_PROBE, 1326 SCAN_SUSPEND, 1327 SCAN_RESUME, 1328 SCAN_ABORT, 1329 }; 1330 1331 DECLARE_STATIC_KEY_FALSE(aql_disable); 1332 1333 struct ieee80211_local { 1334 /* embed the driver visible part. 1335 * don't cast (use the static inlines below), but we keep 1336 * it first anyway so they become a no-op */ 1337 struct ieee80211_hw hw; 1338 1339 struct fq fq; 1340 struct codel_vars *cvars; 1341 struct codel_params cparams; 1342 1343 /* protects active_txqs and txqi->schedule_order */ 1344 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1345 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1346 u16 schedule_round[IEEE80211_NUM_ACS]; 1347 1348 /* serializes ieee80211_handle_wake_tx_queue */ 1349 spinlock_t handle_wake_tx_queue_lock; 1350 1351 u16 airtime_flags; 1352 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1353 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1354 u32 aql_threshold; 1355 atomic_t aql_total_pending_airtime; 1356 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1357 1358 const struct ieee80211_ops *ops; 1359 1360 /* 1361 * private workqueue to mac80211. mac80211 makes this accessible 1362 * via ieee80211_queue_work() 1363 */ 1364 struct workqueue_struct *workqueue; 1365 1366 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1367 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1368 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1369 spinlock_t queue_stop_reason_lock; 1370 1371 int open_count; 1372 int monitors, cooked_mntrs; 1373 /* number of interfaces with corresponding FIF_ flags */ 1374 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1375 fif_probe_req; 1376 bool probe_req_reg; 1377 bool rx_mcast_action_reg; 1378 unsigned int filter_flags; /* FIF_* */ 1379 1380 bool wiphy_ciphers_allocated; 1381 1382 struct cfg80211_chan_def dflt_chandef; 1383 bool emulate_chanctx; 1384 1385 /* protects the aggregated multicast list and filter calls */ 1386 spinlock_t filter_lock; 1387 1388 /* used for uploading changed mc list */ 1389 struct wiphy_work reconfig_filter; 1390 1391 /* aggregated multicast list */ 1392 struct netdev_hw_addr_list mc_list; 1393 1394 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1395 1396 /* 1397 * suspended is true if we finished all the suspend _and_ we have 1398 * not yet come up from resume. This is to be used by mac80211 1399 * to ensure driver sanity during suspend and mac80211's own 1400 * sanity. It can eventually be used for WoW as well. 1401 */ 1402 bool suspended; 1403 1404 /* suspending is true during the whole suspend process */ 1405 bool suspending; 1406 1407 /* 1408 * Resuming is true while suspended, but when we're reprogramming the 1409 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1410 * again even though some other parts of the stack are still suspended 1411 * and we still drop received frames to avoid waking the stack. 1412 */ 1413 bool resuming; 1414 1415 /* 1416 * quiescing is true during the suspend process _only_ to 1417 * ease timer cancelling etc. 1418 */ 1419 bool quiescing; 1420 1421 /* device is started */ 1422 bool started; 1423 1424 /* device is during a HW reconfig */ 1425 bool in_reconfig; 1426 1427 /* reconfiguration failed ... suppress some warnings etc. */ 1428 bool reconfig_failure; 1429 1430 /* wowlan is enabled -- don't reconfig on resume */ 1431 bool wowlan; 1432 1433 struct wiphy_work radar_detected_work; 1434 1435 /* number of RX chains the hardware has */ 1436 u8 rx_chains; 1437 1438 /* bitmap of which sbands were copied */ 1439 u8 sband_allocated; 1440 1441 int tx_headroom; /* required headroom for hardware/radiotap */ 1442 1443 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1444 * added to skb_queue will be processed, but frames in 1445 * skb_queue_unreliable may be dropped if the total length of these 1446 * queues increases over the limit. */ 1447 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1448 struct tasklet_struct tasklet; 1449 struct sk_buff_head skb_queue; 1450 struct sk_buff_head skb_queue_unreliable; 1451 1452 spinlock_t rx_path_lock; 1453 1454 /* Station data */ 1455 /* 1456 * The list, hash table and counter are protected 1457 * by the wiphy mutex, reads are done with RCU. 1458 */ 1459 spinlock_t tim_lock; 1460 unsigned long num_sta; 1461 struct list_head sta_list; 1462 struct rhltable sta_hash; 1463 struct rhltable link_sta_hash; 1464 struct timer_list sta_cleanup; 1465 int sta_generation; 1466 1467 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1468 struct tasklet_struct tx_pending_tasklet; 1469 struct tasklet_struct wake_txqs_tasklet; 1470 1471 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1472 1473 /* number of interfaces with allmulti RX */ 1474 atomic_t iff_allmultis; 1475 1476 struct rate_control_ref *rate_ctrl; 1477 1478 struct arc4_ctx wep_tx_ctx; 1479 struct arc4_ctx wep_rx_ctx; 1480 u32 wep_iv; 1481 1482 /* see iface.c */ 1483 struct list_head interfaces; 1484 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1485 struct mutex iflist_mtx; 1486 1487 /* Scanning and BSS list */ 1488 unsigned long scanning; 1489 struct cfg80211_ssid scan_ssid; 1490 struct cfg80211_scan_request *int_scan_req; 1491 struct cfg80211_scan_request __rcu *scan_req; 1492 struct ieee80211_scan_request *hw_scan_req; 1493 struct cfg80211_chan_def scan_chandef; 1494 enum nl80211_band hw_scan_band; 1495 int scan_channel_idx; 1496 int scan_ies_len; 1497 int hw_scan_ies_bufsize; 1498 struct cfg80211_scan_info scan_info; 1499 1500 struct wiphy_work sched_scan_stopped_work; 1501 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1502 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1503 u8 scan_addr[ETH_ALEN]; 1504 1505 unsigned long leave_oper_channel_time; 1506 enum mac80211_scan_state next_scan_state; 1507 struct wiphy_delayed_work scan_work; 1508 struct ieee80211_sub_if_data __rcu *scan_sdata; 1509 1510 /* Temporary remain-on-channel for off-channel operations */ 1511 struct ieee80211_channel *tmp_channel; 1512 1513 /* channel contexts */ 1514 struct list_head chanctx_list; 1515 1516 #ifdef CONFIG_MAC80211_LEDS 1517 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1518 struct led_trigger tpt_led; 1519 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1520 atomic_t radio_led_active, tpt_led_active; 1521 struct tpt_led_trigger *tpt_led_trigger; 1522 #endif 1523 1524 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1525 /* SNMP counters */ 1526 /* dot11CountersTable */ 1527 u32 dot11TransmittedFragmentCount; 1528 u32 dot11MulticastTransmittedFrameCount; 1529 u32 dot11FailedCount; 1530 u32 dot11RetryCount; 1531 u32 dot11MultipleRetryCount; 1532 u32 dot11FrameDuplicateCount; 1533 u32 dot11ReceivedFragmentCount; 1534 u32 dot11MulticastReceivedFrameCount; 1535 u32 dot11TransmittedFrameCount; 1536 1537 /* TX/RX handler statistics */ 1538 unsigned int tx_handlers_drop; 1539 unsigned int tx_handlers_queued; 1540 unsigned int tx_handlers_drop_wep; 1541 unsigned int tx_handlers_drop_not_assoc; 1542 unsigned int tx_handlers_drop_unauth_port; 1543 unsigned int rx_handlers_drop; 1544 unsigned int rx_handlers_queued; 1545 unsigned int rx_handlers_drop_nullfunc; 1546 unsigned int rx_handlers_drop_defrag; 1547 unsigned int tx_expand_skb_head; 1548 unsigned int tx_expand_skb_head_cloned; 1549 unsigned int rx_expand_skb_head_defrag; 1550 unsigned int rx_handlers_fragments; 1551 unsigned int tx_status_drop; 1552 #define I802_DEBUG_INC(c) (c)++ 1553 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1554 #define I802_DEBUG_INC(c) do { } while (0) 1555 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1556 1557 1558 int total_ps_buffered; /* total number of all buffered unicast and 1559 * multicast packets for power saving stations 1560 */ 1561 1562 bool pspolling; 1563 /* 1564 * PS can only be enabled when we have exactly one managed 1565 * interface (and monitors) in PS, this then points there. 1566 */ 1567 struct ieee80211_sub_if_data *ps_sdata; 1568 struct wiphy_work dynamic_ps_enable_work; 1569 struct wiphy_work dynamic_ps_disable_work; 1570 struct timer_list dynamic_ps_timer; 1571 struct notifier_block ifa_notifier; 1572 struct notifier_block ifa6_notifier; 1573 1574 /* 1575 * The dynamic ps timeout configured from user space via WEXT - 1576 * this will override whatever chosen by mac80211 internally. 1577 */ 1578 int dynamic_ps_forced_timeout; 1579 1580 int user_power_level; /* in dBm, for all interfaces */ 1581 1582 struct work_struct restart_work; 1583 1584 #ifdef CONFIG_MAC80211_DEBUGFS 1585 struct local_debugfsdentries { 1586 struct dentry *rcdir; 1587 struct dentry *keys; 1588 } debugfs; 1589 bool force_tx_status; 1590 #endif 1591 1592 /* 1593 * Remain-on-channel support 1594 */ 1595 struct wiphy_delayed_work roc_work; 1596 struct list_head roc_list; 1597 struct wiphy_work hw_roc_start, hw_roc_done; 1598 unsigned long hw_roc_start_time; 1599 u64 roc_cookie_counter; 1600 1601 struct idr ack_status_frames; 1602 spinlock_t ack_status_lock; 1603 1604 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1605 1606 /* virtual monitor interface */ 1607 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1608 struct ieee80211_chan_req monitor_chanreq; 1609 1610 /* extended capabilities provided by mac80211 */ 1611 u8 ext_capa[8]; 1612 1613 bool wbrf_supported; 1614 }; 1615 1616 static inline struct ieee80211_sub_if_data * 1617 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1618 { 1619 return netdev_priv(dev); 1620 } 1621 1622 static inline struct ieee80211_sub_if_data * 1623 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1624 { 1625 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1626 } 1627 1628 static inline struct ieee80211_supported_band * 1629 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1630 { 1631 struct ieee80211_local *local = sdata->local; 1632 struct ieee80211_chanctx_conf *chanctx_conf; 1633 enum nl80211_band band; 1634 1635 WARN_ON(ieee80211_vif_is_mld(&sdata->vif)); 1636 1637 rcu_read_lock(); 1638 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1639 1640 if (!chanctx_conf) { 1641 rcu_read_unlock(); 1642 return NULL; 1643 } 1644 1645 band = chanctx_conf->def.chan->band; 1646 rcu_read_unlock(); 1647 1648 return local->hw.wiphy->bands[band]; 1649 } 1650 1651 static inline struct ieee80211_supported_band * 1652 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1653 { 1654 struct ieee80211_local *local = link->sdata->local; 1655 struct ieee80211_chanctx_conf *chanctx_conf; 1656 enum nl80211_band band; 1657 1658 rcu_read_lock(); 1659 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1660 if (!chanctx_conf) { 1661 rcu_read_unlock(); 1662 return NULL; 1663 } 1664 1665 band = chanctx_conf->def.chan->band; 1666 rcu_read_unlock(); 1667 1668 return local->hw.wiphy->bands[band]; 1669 } 1670 1671 /* this struct holds the value parsing from channel switch IE */ 1672 struct ieee80211_csa_ie { 1673 struct ieee80211_chan_req chanreq; 1674 u8 mode; 1675 u8 count; 1676 u8 ttl; 1677 u16 pre_value; 1678 u16 reason_code; 1679 u32 max_switch_time; 1680 }; 1681 1682 enum ieee80211_elems_parse_error { 1683 IEEE80211_PARSE_ERR_INVALID_END = BIT(0), 1684 IEEE80211_PARSE_ERR_DUP_ELEM = BIT(1), 1685 IEEE80211_PARSE_ERR_BAD_ELEM_SIZE = BIT(2), 1686 IEEE80211_PARSE_ERR_UNEXPECTED_ELEM = BIT(3), 1687 IEEE80211_PARSE_ERR_DUP_NEST_ML_BASIC = BIT(4), 1688 }; 1689 1690 /* Parsed Information Elements */ 1691 struct ieee802_11_elems { 1692 const u8 *ie_start; 1693 size_t total_len; 1694 u32 crc; 1695 1696 /* pointers to IEs */ 1697 const struct ieee80211_tdls_lnkie *lnk_id; 1698 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1699 const u8 *ext_capab; 1700 const u8 *ssid; 1701 const u8 *supp_rates; 1702 const u8 *ds_params; 1703 const struct ieee80211_tim_ie *tim; 1704 const u8 *rsn; 1705 const u8 *rsnx; 1706 const u8 *erp_info; 1707 const u8 *ext_supp_rates; 1708 const u8 *wmm_info; 1709 const u8 *wmm_param; 1710 const struct ieee80211_ht_cap *ht_cap_elem; 1711 const struct ieee80211_ht_operation *ht_operation; 1712 const struct ieee80211_vht_cap *vht_cap_elem; 1713 const struct ieee80211_vht_operation *vht_operation; 1714 const struct ieee80211_meshconf_ie *mesh_config; 1715 const u8 *he_cap; 1716 const struct ieee80211_he_operation *he_operation; 1717 const struct ieee80211_he_spr *he_spr; 1718 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1719 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1720 const u8 *uora_element; 1721 const u8 *mesh_id; 1722 const u8 *peering; 1723 const __le16 *awake_window; 1724 const u8 *preq; 1725 const u8 *prep; 1726 const u8 *perr; 1727 const struct ieee80211_rann_ie *rann; 1728 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1729 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1730 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1731 const u8 *max_channel_switch_time; 1732 const u8 *country_elem; 1733 const u8 *pwr_constr_elem; 1734 const u8 *cisco_dtpc_elem; 1735 const struct ieee80211_timeout_interval_ie *timeout_int; 1736 const u8 *opmode_notif; 1737 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1738 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1739 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1740 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1741 const struct ieee80211_bssid_index *bssid_index; 1742 u8 max_bssid_indicator; 1743 u8 dtim_count; 1744 u8 dtim_period; 1745 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1746 const struct ieee80211_s1g_cap *s1g_capab; 1747 const struct ieee80211_s1g_oper_ie *s1g_oper; 1748 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1749 const struct ieee80211_aid_response_ie *aid_resp; 1750 const struct ieee80211_eht_cap_elem *eht_cap; 1751 const struct ieee80211_eht_operation *eht_operation; 1752 const struct ieee80211_multi_link_elem *ml_basic; 1753 const struct ieee80211_multi_link_elem *ml_reconf; 1754 const struct ieee80211_bandwidth_indication *bandwidth_indication; 1755 const struct ieee80211_ttlm_elem *ttlm[IEEE80211_TTLM_MAX_CNT]; 1756 1757 /* not the order in the psd values is per element, not per chandef */ 1758 struct ieee80211_parsed_tpe tpe; 1759 struct ieee80211_parsed_tpe csa_tpe; 1760 1761 /* length of them, respectively */ 1762 u8 ext_capab_len; 1763 u8 ssid_len; 1764 u8 supp_rates_len; 1765 u8 tim_len; 1766 u8 rsn_len; 1767 u8 rsnx_len; 1768 u8 ext_supp_rates_len; 1769 u8 wmm_info_len; 1770 u8 wmm_param_len; 1771 u8 he_cap_len; 1772 u8 mesh_id_len; 1773 u8 peering_len; 1774 u8 preq_len; 1775 u8 prep_len; 1776 u8 perr_len; 1777 u8 country_elem_len; 1778 u8 bssid_index_len; 1779 u8 eht_cap_len; 1780 1781 /* mult-link element can be de-fragmented and thus u8 is not sufficient */ 1782 size_t ml_basic_len; 1783 size_t ml_reconf_len; 1784 1785 u8 ttlm_num; 1786 1787 /* 1788 * store the per station profile pointer and length in case that the 1789 * parsing also handled Multi-Link element parsing for a specific link 1790 * ID. 1791 */ 1792 struct ieee80211_mle_per_sta_profile *prof; 1793 size_t sta_prof_len; 1794 1795 /* whether/which parse error occurred while retrieving these elements */ 1796 u8 parse_error; 1797 }; 1798 1799 static inline struct ieee80211_local *hw_to_local( 1800 struct ieee80211_hw *hw) 1801 { 1802 return container_of(hw, struct ieee80211_local, hw); 1803 } 1804 1805 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1806 { 1807 return container_of(txq, struct txq_info, txq); 1808 } 1809 1810 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1811 { 1812 struct txq_info *txqi = to_txq_info(txq); 1813 1814 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1815 } 1816 1817 static inline bool 1818 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1819 { 1820 return status->flag & RX_FLAG_MACTIME; 1821 } 1822 1823 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1824 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1825 1826 void ieee80211_vif_block_queues_csa(struct ieee80211_sub_if_data *sdata); 1827 void ieee80211_vif_unblock_queues_csa(struct ieee80211_sub_if_data *sdata); 1828 1829 /* This function returns the number of multicast stations connected to this 1830 * interface. It returns -1 if that number is not tracked, that is for netdevs 1831 * not in AP or AP_VLAN mode or when using 4addr. 1832 */ 1833 static inline int 1834 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1835 { 1836 if (sdata->vif.type == NL80211_IFTYPE_AP) 1837 return atomic_read(&sdata->u.ap.num_mcast_sta); 1838 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1839 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1840 return -1; 1841 } 1842 1843 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1844 struct ieee80211_rx_status *status, 1845 unsigned int mpdu_len, 1846 unsigned int mpdu_offset); 1847 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1848 int ieee80211_hw_conf_chan(struct ieee80211_local *local); 1849 void ieee80211_hw_conf_init(struct ieee80211_local *local); 1850 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1851 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1852 u64 changed); 1853 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1854 u64 changed); 1855 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1856 struct ieee80211_link_data *link, 1857 u64 changed); 1858 void ieee80211_configure_filter(struct ieee80211_local *local); 1859 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1860 1861 void ieee80211_handle_queued_frames(struct ieee80211_local *local); 1862 1863 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1864 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1865 u64 *cookie, gfp_t gfp); 1866 1867 void ieee80211_check_fast_rx(struct sta_info *sta); 1868 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1869 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1870 void ieee80211_clear_fast_rx(struct sta_info *sta); 1871 1872 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1873 const u8 *addr, int *out_link_id); 1874 1875 /* STA code */ 1876 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1877 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1878 struct cfg80211_auth_request *req); 1879 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1880 struct cfg80211_assoc_request *req); 1881 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1882 struct cfg80211_deauth_request *req); 1883 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1884 struct cfg80211_disassoc_request *req); 1885 void ieee80211_send_pspoll(struct ieee80211_local *local, 1886 struct ieee80211_sub_if_data *sdata); 1887 void ieee80211_recalc_ps(struct ieee80211_local *local); 1888 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1889 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1890 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1891 struct sk_buff *skb); 1892 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1893 struct sk_buff *skb); 1894 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1895 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1896 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1897 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1898 __le16 fc, bool acked); 1899 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1900 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1901 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1902 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1903 u8 reason, bool tx); 1904 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1905 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1906 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link); 1907 1908 /* IBSS code */ 1909 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1910 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1911 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1912 const u8 *bssid, const u8 *addr, u32 supp_rates); 1913 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1914 struct cfg80211_ibss_params *params); 1915 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1916 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1917 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1918 struct sk_buff *skb); 1919 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1920 struct cfg80211_csa_settings *csa_settings, 1921 u64 *changed); 1922 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata, 1923 u64 *changed); 1924 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1925 1926 /* OCB code */ 1927 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1928 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1929 const u8 *bssid, const u8 *addr, u32 supp_rates); 1930 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1931 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1932 struct ocb_setup *setup); 1933 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1934 1935 /* mesh code */ 1936 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1937 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1938 struct sk_buff *skb); 1939 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1940 struct cfg80211_csa_settings *csa_settings, 1941 u64 *changed); 1942 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata, 1943 u64 *changed); 1944 1945 /* scan/BSS handling */ 1946 void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work); 1947 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1948 const u8 *ssid, u8 ssid_len, 1949 struct ieee80211_channel **channels, 1950 unsigned int n_channels); 1951 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1952 struct cfg80211_scan_request *req); 1953 void ieee80211_scan_cancel(struct ieee80211_local *local); 1954 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1955 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1956 1957 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss, 1958 const struct cfg80211_bss_ies *ies, void *data); 1959 1960 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1961 struct ieee80211_bss * 1962 ieee80211_bss_info_update(struct ieee80211_local *local, 1963 struct ieee80211_rx_status *rx_status, 1964 struct ieee80211_mgmt *mgmt, 1965 size_t len, 1966 struct ieee80211_channel *channel); 1967 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1968 struct ieee80211_bss *bss); 1969 1970 /* scheduled scan handling */ 1971 int 1972 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1973 struct cfg80211_sched_scan_request *req); 1974 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1975 struct cfg80211_sched_scan_request *req); 1976 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1977 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1978 void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy, 1979 struct wiphy_work *work); 1980 1981 /* off-channel/mgmt-tx */ 1982 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1983 void ieee80211_offchannel_return(struct ieee80211_local *local); 1984 void ieee80211_roc_setup(struct ieee80211_local *local); 1985 void ieee80211_start_next_roc(struct ieee80211_local *local); 1986 void ieee80211_reconfig_roc(struct ieee80211_local *local); 1987 void ieee80211_roc_purge(struct ieee80211_local *local, 1988 struct ieee80211_sub_if_data *sdata); 1989 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1990 struct ieee80211_channel *chan, 1991 unsigned int duration, u64 *cookie); 1992 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1993 struct wireless_dev *wdev, u64 cookie); 1994 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1995 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1996 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1997 struct wireless_dev *wdev, u64 cookie); 1998 1999 /* channel switch handling */ 2000 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work); 2001 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2002 struct cfg80211_csa_settings *params); 2003 2004 /* color change handling */ 2005 void ieee80211_color_change_finalize_work(struct wiphy *wiphy, 2006 struct wiphy_work *work); 2007 void ieee80211_color_collision_detection_work(struct work_struct *work); 2008 2009 /* interface handling */ 2010 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 2011 NETIF_F_HW_CSUM | NETIF_F_SG | \ 2012 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \ 2013 NETIF_F_HW_TC) 2014 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 2015 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 2016 MAC80211_SUPPORTED_FEATURES_RX) 2017 2018 int ieee80211_iface_init(void); 2019 void ieee80211_iface_exit(void); 2020 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 2021 unsigned char name_assign_type, 2022 struct wireless_dev **new_wdev, enum nl80211_iftype type, 2023 struct vif_params *params); 2024 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 2025 enum nl80211_iftype type); 2026 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 2027 void ieee80211_remove_interfaces(struct ieee80211_local *local); 2028 u32 ieee80211_idle_off(struct ieee80211_local *local); 2029 void ieee80211_recalc_idle(struct ieee80211_local *local); 2030 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 2031 const int offset); 2032 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 2033 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 2034 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 2035 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 2036 2037 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 2038 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 2039 bool update_bss); 2040 void ieee80211_recalc_offload(struct ieee80211_local *local); 2041 2042 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 2043 { 2044 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 2045 } 2046 2047 /* link handling */ 2048 void ieee80211_link_setup(struct ieee80211_link_data *link); 2049 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, 2050 int link_id, 2051 struct ieee80211_link_data *link, 2052 struct ieee80211_bss_conf *link_conf); 2053 void ieee80211_link_stop(struct ieee80211_link_data *link); 2054 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 2055 u16 new_links, u16 dormant_links); 2056 static inline void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata) 2057 { 2058 ieee80211_vif_set_links(sdata, 0, 0); 2059 } 2060 2061 /* tx handling */ 2062 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 2063 void ieee80211_tx_pending(struct tasklet_struct *t); 2064 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 2065 struct net_device *dev); 2066 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 2067 struct net_device *dev); 2068 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 2069 struct net_device *dev); 2070 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 2071 struct net_device *dev, 2072 u32 info_flags, 2073 u32 ctrl_flags, 2074 u64 *cookie); 2075 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 2076 struct sk_buff_head *skbs); 2077 struct sk_buff * 2078 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2079 struct sk_buff *skb, u32 info_flags); 2080 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2081 int retry_count, bool send_to_cooked, 2082 struct ieee80211_tx_status *status); 2083 2084 void ieee80211_check_fast_xmit(struct sta_info *sta); 2085 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2086 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2087 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2088 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2089 const u8 *buf, size_t len, 2090 const u8 *dest, __be16 proto, bool unencrypted, 2091 int link_id, u64 *cookie); 2092 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2093 const u8 *buf, size_t len); 2094 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, 2095 struct sta_info *sta, 2096 struct ieee80211_fast_tx *fast_tx, 2097 struct sk_buff *skb, bool ampdu, 2098 const u8 *da, const u8 *sa); 2099 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, 2100 struct sta_info *sta, struct sk_buff *skb); 2101 2102 /* HT */ 2103 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2104 struct ieee80211_sta_ht_cap *ht_cap); 2105 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2106 struct ieee80211_supported_band *sband, 2107 const struct ieee80211_ht_cap *ht_cap_ie, 2108 struct link_sta_info *link_sta); 2109 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2110 const u8 *da, u16 tid, 2111 u16 initiator, u16 reason_code); 2112 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2113 enum ieee80211_smps_mode smps, const u8 *da, 2114 const u8 *bssid, int link_id); 2115 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2116 enum ieee80211_smps_mode smps_mode_new); 2117 2118 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2119 u16 initiator, u16 reason, bool stop); 2120 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 2121 u8 dialog_token, u16 timeout, 2122 u16 start_seq_num, u16 ba_policy, u16 tid, 2123 u16 buf_size, bool tx, bool auto_seq, 2124 const struct ieee80211_addba_ext_ie *addbaext); 2125 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2126 enum ieee80211_agg_stop_reason reason); 2127 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2128 struct sta_info *sta, 2129 struct ieee80211_mgmt *mgmt, size_t len); 2130 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2131 struct sta_info *sta, 2132 struct ieee80211_mgmt *mgmt, 2133 size_t len); 2134 void ieee80211_process_addba_request(struct ieee80211_local *local, 2135 struct sta_info *sta, 2136 struct ieee80211_mgmt *mgmt, 2137 size_t len); 2138 2139 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2140 enum ieee80211_agg_stop_reason reason); 2141 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2142 struct tid_ampdu_tx *tid_tx); 2143 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2144 struct tid_ampdu_tx *tid_tx); 2145 void ieee80211_ba_session_work(struct wiphy *wiphy, struct wiphy_work *work); 2146 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2147 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2148 2149 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2150 enum nl80211_smps_mode 2151 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2152 2153 /* VHT */ 2154 void 2155 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2156 struct ieee80211_supported_band *sband, 2157 const struct ieee80211_vht_cap *vht_cap_ie, 2158 const struct ieee80211_vht_cap *vht_cap_ie2, 2159 struct link_sta_info *link_sta); 2160 enum ieee80211_sta_rx_bandwidth 2161 _ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta, 2162 struct cfg80211_chan_def *chandef); 2163 static inline enum ieee80211_sta_rx_bandwidth 2164 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta) 2165 { 2166 return _ieee80211_sta_cap_rx_bw(link_sta, NULL); 2167 } 2168 enum ieee80211_sta_rx_bandwidth 2169 _ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta, 2170 struct cfg80211_chan_def *chandef); 2171 static inline enum ieee80211_sta_rx_bandwidth 2172 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta) 2173 { 2174 return _ieee80211_sta_cur_vht_bw(link_sta, NULL); 2175 } 2176 void ieee80211_sta_init_nss(struct link_sta_info *link_sta); 2177 enum ieee80211_sta_rx_bandwidth 2178 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2179 enum nl80211_chan_width 2180 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2181 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2182 struct ieee80211_link_data *link, 2183 struct ieee80211_mgmt *mgmt); 2184 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2185 struct link_sta_info *sta, 2186 u8 opmode, enum nl80211_band band); 2187 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2188 struct link_sta_info *sta, 2189 u8 opmode, enum nl80211_band band); 2190 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2191 struct ieee80211_sta_vht_cap *vht_cap); 2192 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2193 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2194 enum nl80211_chan_width 2195 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2196 2197 /* HE */ 2198 void 2199 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2200 struct ieee80211_supported_band *sband, 2201 const u8 *he_cap_ie, u8 he_cap_len, 2202 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2203 struct link_sta_info *link_sta); 2204 void 2205 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2206 const struct ieee80211_he_spr *he_spr_ie_elem); 2207 2208 void 2209 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2210 const struct ieee80211_he_operation *he_op_ie_elem); 2211 2212 /* S1G */ 2213 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2214 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2215 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2216 struct sk_buff *skb); 2217 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2218 struct sk_buff *skb); 2219 2220 /* Spectrum management */ 2221 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2222 struct ieee80211_mgmt *mgmt, 2223 size_t len); 2224 /** 2225 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2226 * @sdata: the sdata of the interface which has received the frame 2227 * @elems: parsed 802.11 elements received with the frame 2228 * @current_band: indicates the current band 2229 * @vht_cap_info: VHT capabilities of the transmitter 2230 * @conn: contains information about own capabilities and restrictions 2231 * to decide which channel switch announcements can be accepted 2232 * @bssid: the currently connected bssid (for reporting) 2233 * @unprot_action: whether the frame was an unprotected frame or not, 2234 * used for reporting 2235 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2236 * All of them will be filled with if success only. 2237 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2238 */ 2239 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2240 struct ieee802_11_elems *elems, 2241 enum nl80211_band current_band, 2242 u32 vht_cap_info, 2243 struct ieee80211_conn_settings *conn, 2244 u8 *bssid, bool unprot_action, 2245 struct ieee80211_csa_ie *csa_ie); 2246 2247 /* Suspend/resume and hw reconfiguration */ 2248 int ieee80211_reconfig(struct ieee80211_local *local); 2249 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend); 2250 2251 int __ieee80211_suspend(struct ieee80211_hw *hw, 2252 struct cfg80211_wowlan *wowlan); 2253 2254 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2255 { 2256 struct ieee80211_local *local = hw_to_local(hw); 2257 2258 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2259 !test_bit(SCAN_COMPLETED, &local->scanning), 2260 "%s: resume with hardware scan still in progress\n", 2261 wiphy_name(hw->wiphy)); 2262 2263 return ieee80211_reconfig(hw_to_local(hw)); 2264 } 2265 2266 /* utility functions/constants */ 2267 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2268 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode); 2269 enum ieee80211_conn_bw_limit 2270 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef); 2271 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2272 int rate, int erp, int short_preamble); 2273 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2274 struct ieee80211_tx_queue_params *qparam, 2275 int ac); 2276 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe); 2277 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2278 bool bss_notify, bool enable_qos); 2279 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2280 struct sta_info *sta, struct sk_buff *skb); 2281 2282 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2283 struct sk_buff *skb, int tid, int link_id, 2284 enum nl80211_band band); 2285 2286 /* sta_out needs to be checked for ERR_PTR() before using */ 2287 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2288 struct sk_buff *skb, 2289 struct sta_info **sta_out); 2290 2291 static inline void 2292 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2293 struct sk_buff *skb, int tid, 2294 enum nl80211_band band) 2295 { 2296 rcu_read_lock(); 2297 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2298 rcu_read_unlock(); 2299 } 2300 2301 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2302 struct sk_buff *skb, int tid, int link_id); 2303 2304 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2305 struct sk_buff *skb) 2306 { 2307 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2308 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2309 } 2310 2311 /** 2312 * struct ieee80211_elems_parse_params - element parsing parameters 2313 * @mode: connection mode for parsing 2314 * @start: pointer to the elements 2315 * @len: length of the elements 2316 * @action: %true if the elements came from an action frame 2317 * @filter: bitmap of element IDs to filter out while calculating 2318 * the element CRC 2319 * @crc: CRC starting value 2320 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2321 * represent a non-transmitting BSS in which case the data 2322 * for that non-transmitting BSS is returned 2323 * @link_id: the link ID to parse elements for, if a STA profile 2324 * is present in the multi-link element, or -1 to ignore; 2325 * note that the code currently assumes parsing an association 2326 * (or re-association) response frame if this is given 2327 * @from_ap: frame is received from an AP (currently used only 2328 * for EHT capabilities parsing) 2329 */ 2330 struct ieee80211_elems_parse_params { 2331 enum ieee80211_conn_mode mode; 2332 const u8 *start; 2333 size_t len; 2334 bool action; 2335 u64 filter; 2336 u32 crc; 2337 struct cfg80211_bss *bss; 2338 int link_id; 2339 bool from_ap; 2340 }; 2341 2342 struct ieee802_11_elems * 2343 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2344 2345 static inline struct ieee802_11_elems * 2346 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2347 u64 filter, u32 crc, 2348 struct cfg80211_bss *bss) 2349 { 2350 struct ieee80211_elems_parse_params params = { 2351 .mode = IEEE80211_CONN_MODE_HIGHEST, 2352 .start = start, 2353 .len = len, 2354 .action = action, 2355 .filter = filter, 2356 .crc = crc, 2357 .bss = bss, 2358 .link_id = -1, 2359 }; 2360 2361 return ieee802_11_parse_elems_full(¶ms); 2362 } 2363 2364 static inline struct ieee802_11_elems * 2365 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2366 struct cfg80211_bss *bss) 2367 { 2368 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2369 } 2370 2371 extern const int ieee802_1d_to_ac[8]; 2372 2373 static inline int ieee80211_ac_from_tid(int tid) 2374 { 2375 return ieee802_1d_to_ac[tid & 7]; 2376 } 2377 2378 void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy, 2379 struct wiphy_work *work); 2380 void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy, 2381 struct wiphy_work *work); 2382 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2383 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2384 struct ieee80211_sub_if_data *sdata, 2385 bool powersave); 2386 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2387 struct ieee80211_sub_if_data *sdata); 2388 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2389 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2390 2391 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2392 unsigned long queues, 2393 enum queue_stop_reason reason, 2394 bool refcounted); 2395 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2396 struct ieee80211_sub_if_data *sdata, 2397 enum queue_stop_reason reason); 2398 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2399 struct ieee80211_sub_if_data *sdata, 2400 enum queue_stop_reason reason); 2401 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2402 unsigned long queues, 2403 enum queue_stop_reason reason, 2404 bool refcounted); 2405 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2406 enum queue_stop_reason reason, 2407 bool refcounted); 2408 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2409 enum queue_stop_reason reason, 2410 bool refcounted); 2411 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2412 struct sk_buff *skb); 2413 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2414 struct sk_buff_head *skbs); 2415 void ieee80211_flush_queues(struct ieee80211_local *local, 2416 struct ieee80211_sub_if_data *sdata, bool drop); 2417 void __ieee80211_flush_queues(struct ieee80211_local *local, 2418 struct ieee80211_sub_if_data *sdata, 2419 unsigned int queues, bool drop); 2420 2421 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2422 { 2423 /* 2424 * It's unsafe to try to do any work during reconfigure flow. 2425 * When the flow ends the work will be requeued. 2426 */ 2427 if (local->in_reconfig) 2428 return false; 2429 2430 /* 2431 * If quiescing is set, we are racing with __ieee80211_suspend. 2432 * __ieee80211_suspend flushes the workers after setting quiescing, 2433 * and we check quiescing / suspended before enqueing new workers. 2434 * We should abort the worker to avoid the races below. 2435 */ 2436 if (local->quiescing) 2437 return false; 2438 2439 /* 2440 * We might already be suspended if the following scenario occurs: 2441 * __ieee80211_suspend Control path 2442 * 2443 * if (local->quiescing) 2444 * return; 2445 * local->quiescing = true; 2446 * flush_workqueue(); 2447 * queue_work(...); 2448 * local->suspended = true; 2449 * local->quiescing = false; 2450 * worker starts running... 2451 */ 2452 if (local->suspended) 2453 return false; 2454 2455 return true; 2456 } 2457 2458 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2459 void ieee80211_txq_set_params(struct ieee80211_local *local); 2460 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2461 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2462 struct sta_info *sta, 2463 struct txq_info *txq, int tid); 2464 void ieee80211_txq_purge(struct ieee80211_local *local, 2465 struct txq_info *txqi); 2466 void ieee80211_purge_sta_txqs(struct sta_info *sta); 2467 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2468 struct ieee80211_sub_if_data *sdata); 2469 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2470 struct txq_info *txqi); 2471 void ieee80211_wake_txqs(struct tasklet_struct *t); 2472 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2473 u16 transaction, u16 auth_alg, u16 status, 2474 const u8 *extra, size_t extra_len, const u8 *bssid, 2475 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2476 u32 tx_flags); 2477 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2478 const u8 *da, const u8 *bssid, 2479 u16 stype, u16 reason, 2480 bool send_frame, u8 *frame_buf); 2481 2482 enum { 2483 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2484 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2485 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2486 }; 2487 2488 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2489 size_t buffer_len, 2490 struct ieee80211_scan_ies *ie_desc, 2491 const u8 *ie, size_t ie_len, 2492 u8 bands_used, u32 *rate_masks, 2493 struct cfg80211_chan_def *chandef, 2494 u32 flags); 2495 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2496 const u8 *src, const u8 *dst, 2497 u32 ratemask, 2498 struct ieee80211_channel *chan, 2499 const u8 *ssid, size_t ssid_len, 2500 const u8 *ie, size_t ie_len, 2501 u32 flags); 2502 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2503 struct ieee802_11_elems *elems, 2504 enum nl80211_band band, u32 *basic_rates); 2505 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2506 struct ieee80211_link_data *link, 2507 enum ieee80211_smps_mode smps_mode); 2508 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2509 struct ieee80211_link_data *link); 2510 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2511 int link_id); 2512 2513 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2514 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2515 u16 cap); 2516 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2517 const struct cfg80211_chan_def *chandef, 2518 u16 prot_mode, bool rifs_mode); 2519 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2520 const struct cfg80211_chan_def *chandef); 2521 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2522 u32 cap); 2523 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2524 const struct cfg80211_chan_def *chandef); 2525 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata); 2526 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2527 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef, 2528 const struct ieee80211_sta_eht_cap *eht_cap); 2529 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2530 const struct ieee80211_supported_band *sband, 2531 const u8 *srates, int srates_len, u32 *rates); 2532 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2533 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2534 struct ieee80211_sta_s1g_cap *caps, 2535 struct sk_buff *skb); 2536 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2537 struct sk_buff *skb); 2538 2539 /* element building in SKBs */ 2540 int ieee80211_put_srates_elem(struct sk_buff *skb, 2541 const struct ieee80211_supported_band *sband, 2542 u32 basic_rates, u32 rate_flags, u32 masked_rates, 2543 u8 element_id); 2544 int ieee80211_put_he_cap(struct sk_buff *skb, 2545 struct ieee80211_sub_if_data *sdata, 2546 const struct ieee80211_supported_band *sband, 2547 const struct ieee80211_conn_settings *conn); 2548 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2549 struct ieee80211_sub_if_data *sdata, 2550 enum ieee80211_smps_mode smps_mode); 2551 int ieee80211_put_eht_cap(struct sk_buff *skb, 2552 struct ieee80211_sub_if_data *sdata, 2553 const struct ieee80211_supported_band *sband, 2554 const struct ieee80211_conn_settings *conn); 2555 2556 /* channel management */ 2557 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2558 struct cfg80211_chan_def *chandef); 2559 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2560 const struct ieee80211_vht_operation *oper, 2561 const struct ieee80211_ht_operation *htop, 2562 struct cfg80211_chan_def *chandef); 2563 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 2564 struct cfg80211_chan_def *chandef); 2565 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 2566 const struct ieee80211_he_operation *he_oper, 2567 const struct ieee80211_eht_operation *eht_oper, 2568 struct cfg80211_chan_def *chandef); 2569 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2570 struct cfg80211_chan_def *chandef); 2571 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *chandef, 2572 struct ieee80211_conn_settings *conn); 2573 static inline void 2574 ieee80211_chanreq_downgrade(struct ieee80211_chan_req *chanreq, 2575 struct ieee80211_conn_settings *conn) 2576 { 2577 ieee80211_chandef_downgrade(&chanreq->oper, conn); 2578 if (WARN_ON(!conn)) 2579 return; 2580 if (conn->mode < IEEE80211_CONN_MODE_EHT) 2581 chanreq->ap.chan = NULL; 2582 } 2583 2584 bool ieee80211_chanreq_identical(const struct ieee80211_chan_req *a, 2585 const struct ieee80211_chan_req *b); 2586 2587 int __must_check 2588 _ieee80211_link_use_channel(struct ieee80211_link_data *link, 2589 const struct ieee80211_chan_req *req, 2590 enum ieee80211_chanctx_mode mode, 2591 bool assign_on_failure); 2592 2593 static inline int __must_check 2594 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2595 const struct ieee80211_chan_req *req, 2596 enum ieee80211_chanctx_mode mode) 2597 { 2598 return _ieee80211_link_use_channel(link, req, mode, false); 2599 } 2600 2601 int __must_check 2602 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2603 const struct ieee80211_chan_req *req, 2604 enum ieee80211_chanctx_mode mode, 2605 bool radar_required); 2606 int __must_check 2607 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2608 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2609 2610 int __must_check 2611 ieee80211_link_change_chanreq(struct ieee80211_link_data *link, 2612 const struct ieee80211_chan_req *req, 2613 u64 *changed); 2614 void __ieee80211_link_release_channel(struct ieee80211_link_data *link, 2615 bool skip_idle_recalc); 2616 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2617 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2618 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2619 bool clear); 2620 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2621 struct ieee80211_chanctx *ctx); 2622 2623 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2624 struct ieee80211_chanctx *chanctx); 2625 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2626 struct ieee80211_chanctx *ctx, 2627 struct ieee80211_link_data *rsvd_for, 2628 bool check_reserved); 2629 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2630 2631 void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work); 2632 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2633 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 2634 struct wiphy_work *work); 2635 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2636 struct cfg80211_csa_settings *csa_settings); 2637 2638 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2639 struct ieee80211_sub_if_data *sdata); 2640 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2641 const struct cfg80211_chan_def *chandef, 2642 enum ieee80211_chanctx_mode chanmode, 2643 u8 radar_detect); 2644 int ieee80211_max_num_channels(struct ieee80211_local *local); 2645 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2646 struct ieee80211_chanctx *ctx); 2647 2648 /* TDLS */ 2649 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2650 const u8 *peer, int link_id, 2651 u8 action_code, u8 dialog_token, u16 status_code, 2652 u32 peer_capability, bool initiator, 2653 const u8 *extra_ies, size_t extra_ies_len); 2654 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2655 const u8 *peer, enum nl80211_tdls_operation oper); 2656 void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk); 2657 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2658 const u8 *addr, u8 oper_class, 2659 struct cfg80211_chan_def *chandef); 2660 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2661 struct net_device *dev, 2662 const u8 *addr); 2663 void ieee80211_teardown_tdls_peers(struct ieee80211_link_data *link); 2664 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2665 const u8 *peer, u16 reason); 2666 void 2667 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2668 struct sk_buff *skb); 2669 2670 2671 const char *ieee80211_get_reason_code_string(u16 reason_code); 2672 u16 ieee80211_encode_usf(int val); 2673 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2674 enum nl80211_iftype type); 2675 2676 extern const struct ethtool_ops ieee80211_ethtool_ops; 2677 2678 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2679 struct ieee80211_vif *vif, 2680 struct ieee80211_sta *pubsta, 2681 int len, bool ampdu); 2682 #ifdef CONFIG_MAC80211_NOINLINE 2683 #define debug_noinline noinline 2684 #else 2685 #define debug_noinline 2686 #endif 2687 2688 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2689 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2690 2691 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata); 2692 2693 void 2694 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2695 struct ieee80211_supported_band *sband, 2696 const u8 *he_cap_ie, u8 he_cap_len, 2697 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2698 u8 eht_cap_len, 2699 struct link_sta_info *link_sta); 2700 void ieee80211_process_neg_ttlm_req(struct ieee80211_sub_if_data *sdata, 2701 struct ieee80211_mgmt *mgmt, size_t len); 2702 void ieee80211_process_neg_ttlm_res(struct ieee80211_sub_if_data *sdata, 2703 struct ieee80211_mgmt *mgmt, size_t len); 2704 int ieee80211_req_neg_ttlm(struct ieee80211_sub_if_data *sdata, 2705 struct cfg80211_ttlm_params *params); 2706 2707 void ieee80211_check_wbrf_support(struct ieee80211_local *local); 2708 void ieee80211_add_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef); 2709 void ieee80211_remove_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef); 2710 2711 #if IS_ENABLED(CONFIG_MAC80211_KUNIT_TEST) 2712 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym) 2713 #define VISIBLE_IF_MAC80211_KUNIT 2714 ieee80211_rx_result 2715 ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx); 2716 int ieee80211_calc_chandef_subchan_offset(const struct cfg80211_chan_def *ap, 2717 u8 n_partial_subchans); 2718 void ieee80211_rearrange_tpe_psd(struct ieee80211_parsed_tpe_psd *psd, 2719 const struct cfg80211_chan_def *ap, 2720 const struct cfg80211_chan_def *used); 2721 #else 2722 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) 2723 #define VISIBLE_IF_MAC80211_KUNIT static 2724 #endif 2725 2726 #endif /* IEEE80211_I_H */ 2727