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 <net/ieee80211_radiotap.h> 30 #include <net/cfg80211.h> 31 #include <net/mac80211.h> 32 #include <net/fq.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 #include "drop.h" 37 38 extern const struct cfg80211_ops mac80211_config_ops; 39 40 struct ieee80211_local; 41 struct ieee80211_mesh_fast_tx; 42 43 /* Maximum number of broadcast/multicast frames to buffer when some of the 44 * associated stations are using power saving. */ 45 #define AP_MAX_BC_BUFFER 128 46 47 /* Maximum number of frames buffered to all STAs, including multicast frames. 48 * Note: increasing this limit increases the potential memory requirement. Each 49 * frame can be up to about 2 kB long. */ 50 #define TOTAL_MAX_TX_BUFFER 512 51 52 /* Required encryption head and tailroom */ 53 #define IEEE80211_ENCRYPT_HEADROOM 8 54 #define IEEE80211_ENCRYPT_TAILROOM 18 55 56 /* power level hasn't been configured (or set to automatic) */ 57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 58 59 /* 60 * Some APs experience problems when working with U-APSD. Decreasing the 61 * probability of that happening by using legacy mode for all ACs but VO isn't 62 * enough. 63 * 64 * Cisco 4410N originally forced us to enable VO by default only because it 65 * treated non-VO ACs as legacy. 66 * 67 * However some APs (notably Netgear R7000) silently reclassify packets to 68 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 69 * clients would never see some frames (e.g. ARP responses) or would fetch them 70 * accidentally after a long time. 71 * 72 * It makes little sense to enable u-APSD queues by default because it needs 73 * userspace applications to be aware of it to actually take advantage of the 74 * possible additional powersavings. Implicitly depending on driver autotrigger 75 * frame support doesn't make much sense. 76 */ 77 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 78 79 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 80 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 81 82 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 83 84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 85 86 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 87 88 enum ieee80211_status_data { 89 IEEE80211_STATUS_TYPE_MASK = 0x00f, 90 IEEE80211_STATUS_TYPE_INVALID = 0, 91 IEEE80211_STATUS_TYPE_SMPS = 1, 92 IEEE80211_STATUS_TYPE_NEG_TTLM = 2, 93 IEEE80211_STATUS_SUBDATA_MASK = 0x1ff0, 94 }; 95 96 static inline bool 97 ieee80211_sta_keep_active(struct sta_info *sta, u8 ac) 98 { 99 /* Keep a station's queues on the active list for deficit accounting 100 * purposes if it was active or queued during the last 100ms. 101 */ 102 return time_before_eq(jiffies, sta->airtime[ac].last_active + HZ / 10); 103 } 104 105 struct ieee80211_bss { 106 u32 device_ts_beacon, device_ts_presp; 107 108 bool wmm_used; 109 bool uapsd_supported; 110 111 #define IEEE80211_MAX_SUPP_RATES 32 112 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 113 size_t supp_rates_len; 114 struct ieee80211_rate *beacon_rate; 115 116 u32 vht_cap_info; 117 118 /* 119 * During association, we save an ERP value from a probe response so 120 * that we can feed ERP info to the driver when handling the 121 * association completes. these fields probably won't be up-to-date 122 * otherwise, you probably don't want to use them. 123 */ 124 bool has_erp_value; 125 u8 erp_value; 126 127 /* Keep track of the corruption of the last beacon/probe response. */ 128 u8 corrupt_data; 129 130 /* Keep track of what bits of information we have valid info for. */ 131 u8 valid_data; 132 }; 133 134 /** 135 * enum ieee80211_bss_corrupt_data_flags - BSS data corruption flags 136 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 137 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 138 * 139 * These are bss flags that are attached to a bss in the 140 * @corrupt_data field of &struct ieee80211_bss. 141 */ 142 enum ieee80211_bss_corrupt_data_flags { 143 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 144 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 145 }; 146 147 /** 148 * enum ieee80211_bss_valid_data_flags - BSS valid data flags 149 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 150 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 151 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 152 * 153 * These are bss flags that are attached to a bss in the 154 * @valid_data field of &struct ieee80211_bss. They show which parts 155 * of the data structure were received as a result of an un-corrupted 156 * beacon/probe response. 157 */ 158 enum ieee80211_bss_valid_data_flags { 159 IEEE80211_BSS_VALID_WMM = BIT(1), 160 IEEE80211_BSS_VALID_RATES = BIT(2), 161 IEEE80211_BSS_VALID_ERP = BIT(3) 162 }; 163 164 typedef unsigned __bitwise ieee80211_tx_result; 165 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 166 #define TX_DROP ((__force ieee80211_tx_result) 1u) 167 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 168 169 #define IEEE80211_TX_UNICAST BIT(1) 170 #define IEEE80211_TX_PS_BUFFERED BIT(2) 171 172 struct ieee80211_tx_data { 173 struct sk_buff *skb; 174 struct sk_buff_head skbs; 175 struct ieee80211_local *local; 176 struct ieee80211_sub_if_data *sdata; 177 struct sta_info *sta; 178 struct ieee80211_key *key; 179 struct ieee80211_tx_rate rate; 180 181 unsigned int flags; 182 }; 183 184 /** 185 * enum ieee80211_packet_rx_flags - packet RX flags 186 * @IEEE80211_RX_AMSDU: a-MSDU packet 187 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 188 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 189 * 190 * These are per-frame flags that are attached to a frame in the 191 * @rx_flags field of &struct ieee80211_rx_status. 192 */ 193 enum ieee80211_packet_rx_flags { 194 IEEE80211_RX_AMSDU = BIT(3), 195 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 196 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 197 }; 198 199 /** 200 * enum ieee80211_rx_flags - RX data flags 201 * 202 * @IEEE80211_RX_CMNTR: received on cooked monitor already 203 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 204 * to cfg80211_report_obss_beacon(). 205 * 206 * These flags are used across handling multiple interfaces 207 * for a single frame. 208 */ 209 enum ieee80211_rx_flags { 210 IEEE80211_RX_CMNTR = BIT(0), 211 IEEE80211_RX_BEACON_REPORTED = BIT(1), 212 }; 213 214 struct ieee80211_rx_data { 215 struct list_head *list; 216 struct sk_buff *skb; 217 struct ieee80211_local *local; 218 struct ieee80211_sub_if_data *sdata; 219 struct ieee80211_link_data *link; 220 struct sta_info *sta; 221 struct link_sta_info *link_sta; 222 struct ieee80211_key *key; 223 224 unsigned int flags; 225 226 /* 227 * Index into sequence numbers array, 0..16 228 * since the last (16) is used for non-QoS, 229 * will be 16 on non-QoS frames. 230 */ 231 int seqno_idx; 232 233 /* 234 * Index into the security IV/PN arrays, 0..16 235 * since the last (16) is used for CCMP-encrypted 236 * management frames, will be set to 16 on mgmt 237 * frames and 0 on non-QoS frames. 238 */ 239 int security_idx; 240 241 int link_id; 242 243 union { 244 struct { 245 u32 iv32; 246 u16 iv16; 247 } tkip; 248 struct { 249 u8 pn[IEEE80211_CCMP_PN_LEN]; 250 } ccm_gcm; 251 }; 252 }; 253 254 struct ieee80211_csa_settings { 255 const u16 *counter_offsets_beacon; 256 const u16 *counter_offsets_presp; 257 258 int n_counter_offsets_beacon; 259 int n_counter_offsets_presp; 260 261 u8 count; 262 }; 263 264 struct ieee80211_color_change_settings { 265 u16 counter_offset_beacon; 266 u16 counter_offset_presp; 267 u8 count; 268 }; 269 270 struct beacon_data { 271 u8 *head, *tail; 272 int head_len, tail_len; 273 struct ieee80211_meshconf_ie *meshconf; 274 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 275 u8 cntdwn_current_counter; 276 struct cfg80211_mbssid_elems *mbssid_ies; 277 struct cfg80211_rnr_elems *rnr_ies; 278 struct rcu_head rcu_head; 279 }; 280 281 struct probe_resp { 282 struct rcu_head rcu_head; 283 int len; 284 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 285 u8 data[]; 286 }; 287 288 struct fils_discovery_data { 289 struct rcu_head rcu_head; 290 int len; 291 u8 data[]; 292 }; 293 294 struct unsol_bcast_probe_resp_data { 295 struct rcu_head rcu_head; 296 int len; 297 u8 data[]; 298 }; 299 300 struct ps_data { 301 /* yes, this looks ugly, but guarantees that we can later use 302 * bitmap_empty :) 303 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 304 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 305 __aligned(__alignof__(unsigned long)); 306 struct sk_buff_head bc_buf; 307 atomic_t num_sta_ps; /* number of stations in PS mode */ 308 int dtim_count; 309 bool dtim_bc_mc; 310 }; 311 312 struct ieee80211_if_ap { 313 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 314 315 struct ps_data ps; 316 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 317 318 bool multicast_to_unicast; 319 bool active; 320 }; 321 322 struct ieee80211_if_vlan { 323 struct list_head list; /* write-protected with RTNL and local->mtx */ 324 325 /* used for all tx if the VLAN is configured to 4-addr mode */ 326 struct sta_info __rcu *sta; 327 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 328 }; 329 330 struct mesh_stats { 331 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 332 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 333 __u32 fwded_frames; /* Mesh total forwarded frames */ 334 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 335 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 336 }; 337 338 #define PREQ_Q_F_START 0x1 339 #define PREQ_Q_F_REFRESH 0x2 340 struct mesh_preq_queue { 341 struct list_head list; 342 u8 dst[ETH_ALEN]; 343 u8 flags; 344 }; 345 346 struct ieee80211_roc_work { 347 struct list_head list; 348 349 struct ieee80211_sub_if_data *sdata; 350 351 struct ieee80211_channel *chan; 352 353 bool started, abort, hw_begun, notified; 354 bool on_channel; 355 356 unsigned long start_time; 357 358 u32 duration, req_duration; 359 struct sk_buff *frame; 360 u64 cookie, mgmt_tx_cookie; 361 enum ieee80211_roc_type type; 362 }; 363 364 /* flags used in struct ieee80211_if_managed.flags */ 365 enum ieee80211_sta_flags { 366 IEEE80211_STA_CONNECTION_POLL = BIT(1), 367 IEEE80211_STA_CONTROL_PORT = BIT(2), 368 IEEE80211_STA_MFP_ENABLED = BIT(6), 369 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 370 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 371 IEEE80211_STA_ENABLE_RRM = BIT(15), 372 }; 373 374 enum ieee80211_conn_mode { 375 IEEE80211_CONN_MODE_S1G, 376 IEEE80211_CONN_MODE_LEGACY, 377 IEEE80211_CONN_MODE_HT, 378 IEEE80211_CONN_MODE_VHT, 379 IEEE80211_CONN_MODE_HE, 380 IEEE80211_CONN_MODE_EHT, 381 }; 382 383 #define IEEE80211_CONN_MODE_HIGHEST IEEE80211_CONN_MODE_EHT 384 385 enum ieee80211_conn_bw_limit { 386 IEEE80211_CONN_BW_LIMIT_20, 387 IEEE80211_CONN_BW_LIMIT_40, 388 IEEE80211_CONN_BW_LIMIT_80, 389 IEEE80211_CONN_BW_LIMIT_160, /* also 80+80 */ 390 IEEE80211_CONN_BW_LIMIT_320, 391 }; 392 393 struct ieee80211_conn_settings { 394 enum ieee80211_conn_mode mode; 395 enum ieee80211_conn_bw_limit bw_limit; 396 }; 397 398 extern const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited; 399 400 struct ieee80211_mgd_auth_data { 401 struct cfg80211_bss *bss; 402 unsigned long timeout; 403 int tries; 404 u16 algorithm, expected_transaction; 405 406 u8 key[WLAN_KEY_LEN_WEP104]; 407 u8 key_len, key_idx; 408 bool done, waiting; 409 bool peer_confirmed; 410 bool timeout_started; 411 int link_id; 412 413 u8 ap_addr[ETH_ALEN] __aligned(2); 414 415 u16 sae_trans, sae_status; 416 size_t data_len; 417 u8 data[]; 418 }; 419 420 struct ieee80211_mgd_assoc_data { 421 struct { 422 struct cfg80211_bss *bss; 423 424 u8 addr[ETH_ALEN] __aligned(2); 425 426 u8 ap_ht_param; 427 428 struct ieee80211_vht_cap ap_vht_cap; 429 430 size_t elems_len; 431 u8 *elems; /* pointing to inside ie[] below */ 432 433 struct ieee80211_conn_settings conn; 434 435 u16 status; 436 437 bool disabled; 438 } link[IEEE80211_MLD_MAX_NUM_LINKS]; 439 440 u8 ap_addr[ETH_ALEN] __aligned(2); 441 442 /* this is for a workaround, so we use it only for non-MLO */ 443 const u8 *supp_rates; 444 u8 supp_rates_len; 445 446 unsigned long timeout; 447 int tries; 448 449 u8 prev_ap_addr[ETH_ALEN]; 450 u8 ssid[IEEE80211_MAX_SSID_LEN]; 451 u8 ssid_len; 452 bool wmm, uapsd; 453 bool need_beacon; 454 bool synced; 455 bool timeout_started; 456 bool comeback; /* whether the AP has requested association comeback */ 457 bool s1g; 458 bool spp_amsdu; 459 460 unsigned int assoc_link_id; 461 462 u8 fils_nonces[2 * FILS_NONCE_LEN]; 463 u8 fils_kek[FILS_MAX_KEK_LEN]; 464 size_t fils_kek_len; 465 466 size_t ie_len; 467 u8 *ie_pos; /* used to fill ie[] with link[].elems */ 468 u8 ie[]; 469 }; 470 471 struct ieee80211_sta_tx_tspec { 472 /* timestamp of the first packet in the time slice */ 473 unsigned long time_slice_start; 474 475 u32 admitted_time; /* in usecs, unlike over the air */ 476 u8 tsid; 477 s8 up; /* signed to be able to invalidate with -1 during teardown */ 478 479 /* consumed TX time in microseconds in the time slice */ 480 u32 consumed_tx_time; 481 enum { 482 TX_TSPEC_ACTION_NONE = 0, 483 TX_TSPEC_ACTION_DOWNGRADE, 484 TX_TSPEC_ACTION_STOP_DOWNGRADE, 485 } action; 486 bool downgraded; 487 }; 488 489 /* Advertised TID-to-link mapping info */ 490 struct ieee80211_adv_ttlm_info { 491 /* time in TUs at which the new mapping is established, or 0 if there is 492 * no planned advertised TID-to-link mapping 493 */ 494 u16 switch_time; 495 u32 duration; /* duration of the planned T2L map in TUs */ 496 u16 map; /* map of usable links for all TIDs */ 497 bool active; /* whether the advertised mapping is active or not */ 498 }; 499 500 DECLARE_EWMA(beacon_signal, 4, 4) 501 502 struct ieee80211_if_managed { 503 struct timer_list timer; 504 struct timer_list conn_mon_timer; 505 struct timer_list bcn_mon_timer; 506 struct wiphy_work monitor_work; 507 struct wiphy_work beacon_connection_loss_work; 508 struct wiphy_work csa_connection_drop_work; 509 510 unsigned long beacon_timeout; 511 unsigned long probe_timeout; 512 int probe_send_count; 513 bool nullfunc_failed; 514 u8 connection_loss:1, 515 driver_disconnect:1, 516 reconnect:1, 517 associated:1; 518 519 struct ieee80211_mgd_auth_data *auth_data; 520 struct ieee80211_mgd_assoc_data *assoc_data; 521 522 bool powersave; /* powersave requested for this iface */ 523 bool broken_ap; /* AP is broken -- turn off powersave */ 524 525 unsigned int flags; 526 527 u16 mcast_seq_last; 528 529 bool status_acked; 530 bool status_received; 531 __le16 status_fc; 532 533 enum { 534 IEEE80211_MFP_DISABLED, 535 IEEE80211_MFP_OPTIONAL, 536 IEEE80211_MFP_REQUIRED 537 } mfp; /* management frame protection */ 538 539 /* 540 * Bitmask of enabled u-apsd queues, 541 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 542 * to take effect. 543 */ 544 unsigned int uapsd_queues; 545 546 /* 547 * Maximum number of buffered frames AP can deliver during a 548 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 549 * Needs a new association to take effect. 550 */ 551 unsigned int uapsd_max_sp_len; 552 553 u8 use_4addr; 554 555 /* 556 * State variables for keeping track of RSSI of the AP currently 557 * connected to and informing driver when RSSI has gone 558 * below/above a certain threshold. 559 */ 560 int rssi_min_thold, rssi_max_thold; 561 562 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 563 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 564 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 565 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 566 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 567 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 568 569 /* TDLS support */ 570 u8 tdls_peer[ETH_ALEN] __aligned(2); 571 struct wiphy_delayed_work tdls_peer_del_work; 572 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 573 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 574 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 575 bool tdls_wider_bw_prohibited; 576 577 /* WMM-AC TSPEC support */ 578 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 579 /* Use a separate work struct so that we can do something here 580 * while the sdata->work is flushing the queues, for example. 581 * otherwise, in scenarios where we hardly get any traffic out 582 * on the BE queue, but there's a lot of VO traffic, we might 583 * get stuck in a downgraded situation and flush takes forever. 584 */ 585 struct wiphy_delayed_work tx_tspec_wk; 586 587 /* Information elements from the last transmitted (Re)Association 588 * Request frame. 589 */ 590 u8 *assoc_req_ies; 591 size_t assoc_req_ies_len; 592 593 struct wiphy_delayed_work ml_reconf_work; 594 u16 removed_links; 595 596 /* TID-to-link mapping support */ 597 struct wiphy_delayed_work ttlm_work; 598 struct ieee80211_adv_ttlm_info ttlm_info; 599 struct wiphy_work teardown_ttlm_work; 600 601 /* dialog token enumerator for neg TTLM request */ 602 u8 dialog_token_alloc; 603 struct wiphy_delayed_work neg_ttlm_timeout_work; 604 }; 605 606 struct ieee80211_if_ibss { 607 struct timer_list timer; 608 struct wiphy_work csa_connection_drop_work; 609 610 unsigned long last_scan_completed; 611 612 u32 basic_rates; 613 614 bool fixed_bssid; 615 bool fixed_channel; 616 bool privacy; 617 618 bool control_port; 619 bool userspace_handles_dfs; 620 621 u8 bssid[ETH_ALEN] __aligned(2); 622 u8 ssid[IEEE80211_MAX_SSID_LEN]; 623 u8 ssid_len, ie_len; 624 u8 *ie; 625 struct cfg80211_chan_def chandef; 626 627 unsigned long ibss_join_req; 628 /* probe response/beacon for IBSS */ 629 struct beacon_data __rcu *presp; 630 631 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 632 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 633 634 spinlock_t incomplete_lock; 635 struct list_head incomplete_stations; 636 637 enum { 638 IEEE80211_IBSS_MLME_SEARCH, 639 IEEE80211_IBSS_MLME_JOINED, 640 } state; 641 }; 642 643 /** 644 * struct ieee80211_if_ocb - OCB mode state 645 * 646 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 647 * @wrkq_flags: OCB deferred task action 648 * @incomplete_lock: delayed STA insertion lock 649 * @incomplete_stations: list of STAs waiting for delayed insertion 650 * @joined: indication if the interface is connected to an OCB network 651 */ 652 struct ieee80211_if_ocb { 653 struct timer_list housekeeping_timer; 654 unsigned long wrkq_flags; 655 656 spinlock_t incomplete_lock; 657 struct list_head incomplete_stations; 658 659 bool joined; 660 }; 661 662 /** 663 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 664 * 665 * these declarations define the interface, which enables 666 * vendor-specific mesh synchronization 667 * 668 * @rx_bcn_presp: beacon/probe response was received 669 * @adjust_tsf: TSF adjustment method 670 */ 671 struct ieee80211_mesh_sync_ops { 672 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 673 struct ieee80211_mgmt *mgmt, unsigned int len, 674 const struct ieee80211_meshconf_ie *mesh_cfg, 675 struct ieee80211_rx_status *rx_status); 676 677 /* should be called with beacon_data under RCU read lock */ 678 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 679 struct beacon_data *beacon); 680 /* add other framework functions here */ 681 }; 682 683 struct mesh_csa_settings { 684 struct rcu_head rcu_head; 685 struct cfg80211_csa_settings settings; 686 }; 687 688 /** 689 * struct mesh_table - mesh hash table 690 * 691 * @known_gates: list of known mesh gates and their mpaths by the station. The 692 * gate's mpath may or may not be resolved and active. 693 * @gates_lock: protects updates to known_gates 694 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 695 * @walk_head: linked list containing all mesh_path objects 696 * @walk_lock: lock protecting walk_head 697 * @entries: number of entries in the table 698 */ 699 struct mesh_table { 700 struct hlist_head known_gates; 701 spinlock_t gates_lock; 702 struct rhashtable rhead; 703 struct hlist_head walk_head; 704 spinlock_t walk_lock; 705 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 706 }; 707 708 /** 709 * struct mesh_tx_cache - mesh fast xmit header cache 710 * 711 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key 712 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects 713 * @walk_lock: lock protecting walk_head and rht 714 */ 715 struct mesh_tx_cache { 716 struct rhashtable rht; 717 struct hlist_head walk_head; 718 spinlock_t walk_lock; 719 }; 720 721 struct ieee80211_if_mesh { 722 struct timer_list housekeeping_timer; 723 struct timer_list mesh_path_timer; 724 struct timer_list mesh_path_root_timer; 725 726 unsigned long wrkq_flags; 727 unsigned long mbss_changed[64 / BITS_PER_LONG]; 728 729 bool userspace_handles_dfs; 730 731 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 732 size_t mesh_id_len; 733 /* Active Path Selection Protocol Identifier */ 734 u8 mesh_pp_id; 735 /* Active Path Selection Metric Identifier */ 736 u8 mesh_pm_id; 737 /* Congestion Control Mode Identifier */ 738 u8 mesh_cc_id; 739 /* Synchronization Protocol Identifier */ 740 u8 mesh_sp_id; 741 /* Authentication Protocol Identifier */ 742 u8 mesh_auth_id; 743 /* Local mesh Sequence Number */ 744 u32 sn; 745 /* Last used PREQ ID */ 746 u32 preq_id; 747 atomic_t mpaths; 748 /* Timestamp of last SN update */ 749 unsigned long last_sn_update; 750 /* Time when it's ok to send next PERR */ 751 unsigned long next_perr; 752 /* Timestamp of last PREQ sent */ 753 unsigned long last_preq; 754 struct mesh_rmc *rmc; 755 spinlock_t mesh_preq_queue_lock; 756 struct mesh_preq_queue preq_queue; 757 int preq_queue_len; 758 struct mesh_stats mshstats; 759 struct mesh_config mshcfg; 760 atomic_t estab_plinks; 761 atomic_t mesh_seqnum; 762 bool accepting_plinks; 763 int num_gates; 764 struct beacon_data __rcu *beacon; 765 const u8 *ie; 766 u8 ie_len; 767 enum { 768 IEEE80211_MESH_SEC_NONE = 0x0, 769 IEEE80211_MESH_SEC_AUTHED = 0x1, 770 IEEE80211_MESH_SEC_SECURED = 0x2, 771 } security; 772 bool user_mpm; 773 /* Extensible Synchronization Framework */ 774 const struct ieee80211_mesh_sync_ops *sync_ops; 775 s64 sync_offset_clockdrift_max; 776 spinlock_t sync_offset_lock; 777 /* mesh power save */ 778 enum nl80211_mesh_power_mode nonpeer_pm; 779 int ps_peers_light_sleep; 780 int ps_peers_deep_sleep; 781 struct ps_data ps; 782 /* Channel Switching Support */ 783 struct mesh_csa_settings __rcu *csa; 784 enum { 785 IEEE80211_MESH_CSA_ROLE_NONE, 786 IEEE80211_MESH_CSA_ROLE_INIT, 787 IEEE80211_MESH_CSA_ROLE_REPEATER, 788 } csa_role; 789 u8 chsw_ttl; 790 u16 pre_value; 791 792 /* offset from skb->data while building IE */ 793 int meshconf_offset; 794 795 struct mesh_table mesh_paths; 796 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 797 int mesh_paths_generation; 798 int mpp_paths_generation; 799 struct mesh_tx_cache tx_cache; 800 }; 801 802 #ifdef CONFIG_MAC80211_MESH 803 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 804 do { (msh)->mshstats.name++; } while (0) 805 #else 806 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 807 do { } while (0) 808 #endif 809 810 /** 811 * enum ieee80211_sub_if_data_flags - virtual interface flags 812 * 813 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 814 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 815 * associated stations and deliver multicast frames both 816 * back to wireless media and to the local net stack. 817 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 818 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 819 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 820 * recovery 821 */ 822 enum ieee80211_sub_if_data_flags { 823 IEEE80211_SDATA_ALLMULTI = BIT(0), 824 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 825 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 826 IEEE80211_SDATA_IN_DRIVER = BIT(5), 827 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 828 }; 829 830 /** 831 * enum ieee80211_sdata_state_bits - virtual interface state bits 832 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 833 * mirrors netif_running() but is separate for interface type 834 * change handling while the interface is up 835 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 836 * mode, so queues are stopped 837 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 838 * to offchannel, reset when offchannel returns 839 */ 840 enum ieee80211_sdata_state_bits { 841 SDATA_STATE_RUNNING, 842 SDATA_STATE_OFFCHANNEL, 843 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 844 }; 845 846 /** 847 * enum ieee80211_chanctx_mode - channel context configuration mode 848 * 849 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 850 * multiple interfaces 851 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 852 * only by a single interface. This can be used for example for 853 * non-fixed channel IBSS. 854 */ 855 enum ieee80211_chanctx_mode { 856 IEEE80211_CHANCTX_SHARED, 857 IEEE80211_CHANCTX_EXCLUSIVE 858 }; 859 860 /** 861 * enum ieee80211_chanctx_replace_state - channel context replacement state 862 * 863 * This is used for channel context in-place reservations that require channel 864 * context switch/swap. 865 * 866 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 867 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 868 * by a (not yet registered) channel context pointed by %replace_ctx. 869 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 870 * replaces an existing channel context pointed to by %replace_ctx. 871 */ 872 enum ieee80211_chanctx_replace_state { 873 IEEE80211_CHANCTX_REPLACE_NONE, 874 IEEE80211_CHANCTX_WILL_BE_REPLACED, 875 IEEE80211_CHANCTX_REPLACES_OTHER, 876 }; 877 878 struct ieee80211_chanctx { 879 struct list_head list; 880 struct rcu_head rcu_head; 881 882 struct list_head assigned_links; 883 struct list_head reserved_links; 884 885 enum ieee80211_chanctx_replace_state replace_state; 886 struct ieee80211_chanctx *replace_ctx; 887 888 enum ieee80211_chanctx_mode mode; 889 bool driver_present; 890 891 /* temporary data for search algorithm etc. */ 892 struct ieee80211_chan_req req; 893 894 struct ieee80211_chanctx_conf conf; 895 }; 896 897 struct mac80211_qos_map { 898 struct cfg80211_qos_map qos_map; 899 struct rcu_head rcu_head; 900 }; 901 902 enum txq_info_flags { 903 IEEE80211_TXQ_STOP, 904 IEEE80211_TXQ_AMPDU, 905 IEEE80211_TXQ_NO_AMSDU, 906 IEEE80211_TXQ_DIRTY, 907 }; 908 909 /** 910 * struct txq_info - per tid queue 911 * 912 * @tin: contains packets split into multiple flows 913 * @def_cvars: codel vars for the @tin's default_flow 914 * @cstats: code statistics for this queue 915 * @frags: used to keep fragments created after dequeue 916 * @schedule_order: used with ieee80211_local->active_txqs 917 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 918 * @flags: TXQ flags from &enum txq_info_flags 919 * @txq: the driver visible part 920 */ 921 struct txq_info { 922 struct fq_tin tin; 923 struct codel_vars def_cvars; 924 struct codel_stats cstats; 925 926 u16 schedule_round; 927 struct list_head schedule_order; 928 929 struct sk_buff_head frags; 930 931 unsigned long flags; 932 933 /* keep last! */ 934 struct ieee80211_txq txq; 935 }; 936 937 struct ieee80211_if_mntr { 938 u32 flags; 939 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 940 941 struct list_head list; 942 }; 943 944 /** 945 * struct ieee80211_if_nan - NAN state 946 * 947 * @conf: current NAN configuration 948 * @func_lock: lock for @func_inst_ids 949 * @function_inst_ids: a bitmap of available instance_id's 950 */ 951 struct ieee80211_if_nan { 952 struct cfg80211_nan_conf conf; 953 954 /* protects function_inst_ids */ 955 spinlock_t func_lock; 956 struct idr function_inst_ids; 957 }; 958 959 struct ieee80211_link_data_managed { 960 u8 bssid[ETH_ALEN] __aligned(2); 961 962 u8 dtim_period; 963 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 964 driver_smps_mode; /* smps mode request */ 965 966 struct ieee80211_conn_settings conn; 967 968 s16 p2p_noa_index; 969 970 bool tdls_chan_switch_prohibited; 971 972 bool have_beacon; 973 bool tracking_signal_avg; 974 bool disable_wmm_tracking; 975 bool operating_11g_mode; 976 977 bool csa_waiting_bcn; 978 bool csa_ignored_same_chan; 979 bool csa_blocked_tx; 980 struct wiphy_delayed_work chswitch_work; 981 982 struct wiphy_work request_smps_work; 983 /* used to reconfigure hardware SM PS */ 984 struct wiphy_work recalc_smps; 985 986 bool beacon_crc_valid; 987 u32 beacon_crc; 988 struct ewma_beacon_signal ave_beacon_signal; 989 int last_ave_beacon_signal; 990 991 /* 992 * Number of Beacon frames used in ave_beacon_signal. This can be used 993 * to avoid generating less reliable cqm events that would be based 994 * only on couple of received frames. 995 */ 996 unsigned int count_beacon_signal; 997 998 /* Number of times beacon loss was invoked. */ 999 unsigned int beacon_loss_count; 1000 1001 /* 1002 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 1003 * that triggered a cqm event. 0 indicates that no event has been 1004 * generated for the current association. 1005 */ 1006 int last_cqm_event_signal; 1007 1008 int wmm_last_param_set; 1009 int mu_edca_last_param_set; 1010 1011 u8 bss_param_ch_cnt; 1012 }; 1013 1014 struct ieee80211_link_data_ap { 1015 struct beacon_data __rcu *beacon; 1016 struct probe_resp __rcu *probe_resp; 1017 struct fils_discovery_data __rcu *fils_discovery; 1018 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 1019 1020 /* to be used after channel switch. */ 1021 struct cfg80211_beacon_data *next_beacon; 1022 }; 1023 1024 struct ieee80211_link_data { 1025 struct ieee80211_sub_if_data *sdata; 1026 unsigned int link_id; 1027 1028 struct list_head assigned_chanctx_list; /* protected by wiphy mutex */ 1029 struct list_head reserved_chanctx_list; /* protected by wiphy mutex */ 1030 1031 /* multicast keys only */ 1032 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + 1033 NUM_DEFAULT_MGMT_KEYS + 1034 NUM_DEFAULT_BEACON_KEYS]; 1035 struct ieee80211_key __rcu *default_multicast_key; 1036 struct ieee80211_key __rcu *default_mgmt_key; 1037 struct ieee80211_key __rcu *default_beacon_key; 1038 1039 struct wiphy_work csa_finalize_work; 1040 1041 bool operating_11g_mode; 1042 1043 struct ieee80211_chan_req csa_chanreq; 1044 1045 struct wiphy_work color_change_finalize_work; 1046 struct delayed_work color_collision_detect_work; 1047 u64 color_bitmap; 1048 1049 /* context reservation -- protected with wiphy mutex */ 1050 struct ieee80211_chanctx *reserved_chanctx; 1051 struct ieee80211_chan_req reserved; 1052 bool reserved_radar_required; 1053 bool reserved_ready; 1054 1055 u8 needed_rx_chains; 1056 enum ieee80211_smps_mode smps_mode; 1057 1058 int user_power_level; /* in dBm */ 1059 int ap_power_level; /* in dBm */ 1060 1061 bool radar_required; 1062 struct wiphy_delayed_work dfs_cac_timer_work; 1063 1064 union { 1065 struct ieee80211_link_data_managed mgd; 1066 struct ieee80211_link_data_ap ap; 1067 } u; 1068 1069 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 1070 1071 struct ieee80211_bss_conf *conf; 1072 1073 #ifdef CONFIG_MAC80211_DEBUGFS 1074 struct dentry *debugfs_dir; 1075 #endif 1076 }; 1077 1078 struct ieee80211_sub_if_data { 1079 struct list_head list; 1080 1081 struct wireless_dev wdev; 1082 1083 /* keys */ 1084 struct list_head key_list; 1085 1086 /* count for keys needing tailroom space allocation */ 1087 int crypto_tx_tailroom_needed_cnt; 1088 int crypto_tx_tailroom_pending_dec; 1089 struct wiphy_delayed_work dec_tailroom_needed_wk; 1090 1091 struct net_device *dev; 1092 struct ieee80211_local *local; 1093 1094 unsigned int flags; 1095 1096 unsigned long state; 1097 1098 bool csa_blocked_queues; 1099 1100 char name[IFNAMSIZ]; 1101 1102 struct ieee80211_fragment_cache frags; 1103 1104 /* TID bitmap for NoAck policy */ 1105 u16 noack_map; 1106 1107 /* bit field of ACM bits (BIT(802.1D tag)) */ 1108 u8 wmm_acm; 1109 1110 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS]; 1111 struct ieee80211_key __rcu *default_unicast_key; 1112 1113 u16 sequence_number; 1114 u16 mld_mcast_seq; 1115 __be16 control_port_protocol; 1116 bool control_port_no_encrypt; 1117 bool control_port_no_preauth; 1118 bool control_port_over_nl80211; 1119 1120 atomic_t num_tx_queued; 1121 struct mac80211_qos_map __rcu *qos_map; 1122 1123 struct wiphy_work work; 1124 struct sk_buff_head skb_queue; 1125 struct sk_buff_head status_queue; 1126 1127 /* 1128 * AP this belongs to: self in AP mode and 1129 * corresponding AP in VLAN mode, NULL for 1130 * all others (might be needed later in IBSS) 1131 */ 1132 struct ieee80211_if_ap *bss; 1133 1134 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 1135 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 1136 1137 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 1138 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 1139 1140 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1141 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1142 1143 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1144 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1145 bool beacon_rate_set; 1146 1147 union { 1148 struct ieee80211_if_ap ap; 1149 struct ieee80211_if_vlan vlan; 1150 struct ieee80211_if_managed mgd; 1151 struct ieee80211_if_ibss ibss; 1152 struct ieee80211_if_mesh mesh; 1153 struct ieee80211_if_ocb ocb; 1154 struct ieee80211_if_mntr mntr; 1155 struct ieee80211_if_nan nan; 1156 } u; 1157 1158 struct ieee80211_link_data deflink; 1159 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 1160 1161 /* for ieee80211_set_active_links_async() */ 1162 struct wiphy_work activate_links_work; 1163 u16 desired_active_links; 1164 1165 u16 restart_active_links; 1166 1167 #ifdef CONFIG_MAC80211_DEBUGFS 1168 struct { 1169 struct dentry *subdir_stations; 1170 struct dentry *default_unicast_key; 1171 struct dentry *default_multicast_key; 1172 struct dentry *default_mgmt_key; 1173 struct dentry *default_beacon_key; 1174 } debugfs; 1175 #endif 1176 1177 /* must be last, dynamically sized area in this! */ 1178 struct ieee80211_vif vif; 1179 }; 1180 1181 static inline 1182 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1183 { 1184 return container_of(p, struct ieee80211_sub_if_data, vif); 1185 } 1186 1187 #define sdata_dereference(p, sdata) \ 1188 wiphy_dereference(sdata->local->hw.wiphy, p) 1189 1190 #define for_each_sdata_link(_local, _link) \ 1191 /* outer loop just to define the variables ... */ \ 1192 for (struct ieee80211_sub_if_data *___sdata = NULL; \ 1193 !___sdata; \ 1194 ___sdata = (void *)~0 /* always stop */) \ 1195 list_for_each_entry(___sdata, &(_local)->interfaces, list) \ 1196 if (ieee80211_sdata_running(___sdata)) \ 1197 for (int ___link_id = 0; \ 1198 ___link_id < ARRAY_SIZE(___sdata->link); \ 1199 ___link_id++) \ 1200 if ((_link = wiphy_dereference((local)->hw.wiphy, \ 1201 ___sdata->link[___link_id]))) 1202 1203 static inline int 1204 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems, 1205 struct cfg80211_rnr_elems *rnr_elems, 1206 u8 i) 1207 { 1208 int len = 0; 1209 1210 if (!elems || !elems->cnt || i > elems->cnt) 1211 return 0; 1212 1213 if (i < elems->cnt) { 1214 len = elems->elem[i].len; 1215 if (rnr_elems) { 1216 len += rnr_elems->elem[i].len; 1217 for (i = elems->cnt; i < rnr_elems->cnt; i++) 1218 len += rnr_elems->elem[i].len; 1219 } 1220 return len; 1221 } 1222 1223 /* i == elems->cnt, calculate total length of all MBSSID elements */ 1224 for (i = 0; i < elems->cnt; i++) 1225 len += elems->elem[i].len; 1226 1227 if (rnr_elems) { 1228 for (i = 0; i < rnr_elems->cnt; i++) 1229 len += rnr_elems->elem[i].len; 1230 } 1231 1232 return len; 1233 } 1234 1235 enum { 1236 IEEE80211_RX_MSG = 1, 1237 IEEE80211_TX_STATUS_MSG = 2, 1238 }; 1239 1240 enum queue_stop_reason { 1241 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1242 IEEE80211_QUEUE_STOP_REASON_PS, 1243 IEEE80211_QUEUE_STOP_REASON_CSA, 1244 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1245 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1246 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1247 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1248 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1249 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1250 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1251 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1252 1253 IEEE80211_QUEUE_STOP_REASONS, 1254 }; 1255 1256 #ifdef CONFIG_MAC80211_LEDS 1257 struct tpt_led_trigger { 1258 char name[32]; 1259 const struct ieee80211_tpt_blink *blink_table; 1260 unsigned int blink_table_len; 1261 struct timer_list timer; 1262 struct ieee80211_local *local; 1263 unsigned long prev_traffic; 1264 unsigned long tx_bytes, rx_bytes; 1265 unsigned int active, want; 1266 bool running; 1267 }; 1268 #endif 1269 1270 /** 1271 * enum mac80211_scan_flags - currently active scan mode 1272 * 1273 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1274 * well be on the operating channel 1275 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1276 * determine if we are on the operating channel or not 1277 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1278 * channel. This should not interrupt normal traffic. 1279 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1280 * that the scan completed. 1281 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1282 * a scan complete for an aborted scan. 1283 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1284 * cancelled. 1285 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1286 * and could send a probe request after receiving a beacon. 1287 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1288 */ 1289 enum mac80211_scan_flags { 1290 SCAN_SW_SCANNING, 1291 SCAN_HW_SCANNING, 1292 SCAN_ONCHANNEL_SCANNING, 1293 SCAN_COMPLETED, 1294 SCAN_ABORTED, 1295 SCAN_HW_CANCELLED, 1296 SCAN_BEACON_WAIT, 1297 SCAN_BEACON_DONE, 1298 }; 1299 1300 /** 1301 * enum mac80211_scan_state - scan state machine states 1302 * 1303 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1304 * determines if we should keep on scanning or switch back to the 1305 * operating channel 1306 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1307 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1308 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1309 * send out data 1310 * @SCAN_RESUME: Resume the scan and scan the next channel 1311 * @SCAN_ABORT: Abort the scan and go back to operating channel 1312 */ 1313 enum mac80211_scan_state { 1314 SCAN_DECISION, 1315 SCAN_SET_CHANNEL, 1316 SCAN_SEND_PROBE, 1317 SCAN_SUSPEND, 1318 SCAN_RESUME, 1319 SCAN_ABORT, 1320 }; 1321 1322 DECLARE_STATIC_KEY_FALSE(aql_disable); 1323 1324 struct ieee80211_local { 1325 /* embed the driver visible part. 1326 * don't cast (use the static inlines below), but we keep 1327 * it first anyway so they become a no-op */ 1328 struct ieee80211_hw hw; 1329 1330 struct fq fq; 1331 struct codel_vars *cvars; 1332 struct codel_params cparams; 1333 1334 /* protects active_txqs and txqi->schedule_order */ 1335 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1336 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1337 u16 schedule_round[IEEE80211_NUM_ACS]; 1338 1339 /* serializes ieee80211_handle_wake_tx_queue */ 1340 spinlock_t handle_wake_tx_queue_lock; 1341 1342 u16 airtime_flags; 1343 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1344 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1345 u32 aql_threshold; 1346 atomic_t aql_total_pending_airtime; 1347 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS]; 1348 1349 const struct ieee80211_ops *ops; 1350 1351 /* 1352 * private workqueue to mac80211. mac80211 makes this accessible 1353 * via ieee80211_queue_work() 1354 */ 1355 struct workqueue_struct *workqueue; 1356 1357 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1358 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1359 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1360 spinlock_t queue_stop_reason_lock; 1361 1362 int open_count; 1363 int monitors, cooked_mntrs; 1364 /* number of interfaces with corresponding FIF_ flags */ 1365 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1366 fif_probe_req; 1367 bool probe_req_reg; 1368 bool rx_mcast_action_reg; 1369 unsigned int filter_flags; /* FIF_* */ 1370 1371 bool wiphy_ciphers_allocated; 1372 1373 struct cfg80211_chan_def dflt_chandef; 1374 bool emulate_chanctx; 1375 1376 /* protects the aggregated multicast list and filter calls */ 1377 spinlock_t filter_lock; 1378 1379 /* used for uploading changed mc list */ 1380 struct wiphy_work reconfig_filter; 1381 1382 /* aggregated multicast list */ 1383 struct netdev_hw_addr_list mc_list; 1384 1385 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1386 1387 /* 1388 * suspended is true if we finished all the suspend _and_ we have 1389 * not yet come up from resume. This is to be used by mac80211 1390 * to ensure driver sanity during suspend and mac80211's own 1391 * sanity. It can eventually be used for WoW as well. 1392 */ 1393 bool suspended; 1394 1395 /* suspending is true during the whole suspend process */ 1396 bool suspending; 1397 1398 /* 1399 * Resuming is true while suspended, but when we're reprogramming the 1400 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1401 * again even though some other parts of the stack are still suspended 1402 * and we still drop received frames to avoid waking the stack. 1403 */ 1404 bool resuming; 1405 1406 /* 1407 * quiescing is true during the suspend process _only_ to 1408 * ease timer cancelling etc. 1409 */ 1410 bool quiescing; 1411 1412 /* device is started */ 1413 bool started; 1414 1415 /* device is during a HW reconfig */ 1416 bool in_reconfig; 1417 1418 /* reconfiguration failed ... suppress some warnings etc. */ 1419 bool reconfig_failure; 1420 1421 /* wowlan is enabled -- don't reconfig on resume */ 1422 bool wowlan; 1423 1424 struct wiphy_work radar_detected_work; 1425 1426 /* number of RX chains the hardware has */ 1427 u8 rx_chains; 1428 1429 /* bitmap of which sbands were copied */ 1430 u8 sband_allocated; 1431 1432 int tx_headroom; /* required headroom for hardware/radiotap */ 1433 1434 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1435 * added to skb_queue will be processed, but frames in 1436 * skb_queue_unreliable may be dropped if the total length of these 1437 * queues increases over the limit. */ 1438 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1439 struct tasklet_struct tasklet; 1440 struct sk_buff_head skb_queue; 1441 struct sk_buff_head skb_queue_unreliable; 1442 1443 spinlock_t rx_path_lock; 1444 1445 /* Station data */ 1446 /* 1447 * The list, hash table and counter are protected 1448 * by the wiphy mutex, reads are done with RCU. 1449 */ 1450 spinlock_t tim_lock; 1451 unsigned long num_sta; 1452 struct list_head sta_list; 1453 struct rhltable sta_hash; 1454 struct rhltable link_sta_hash; 1455 struct timer_list sta_cleanup; 1456 int sta_generation; 1457 1458 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1459 struct tasklet_struct tx_pending_tasklet; 1460 struct tasklet_struct wake_txqs_tasklet; 1461 1462 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1463 1464 /* number of interfaces with allmulti RX */ 1465 atomic_t iff_allmultis; 1466 1467 struct rate_control_ref *rate_ctrl; 1468 1469 struct arc4_ctx wep_tx_ctx; 1470 struct arc4_ctx wep_rx_ctx; 1471 u32 wep_iv; 1472 1473 /* see iface.c */ 1474 struct list_head interfaces; 1475 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1476 struct mutex iflist_mtx; 1477 1478 /* Scanning and BSS list */ 1479 unsigned long scanning; 1480 struct cfg80211_ssid scan_ssid; 1481 struct cfg80211_scan_request *int_scan_req; 1482 struct cfg80211_scan_request __rcu *scan_req; 1483 struct ieee80211_scan_request *hw_scan_req; 1484 struct cfg80211_chan_def scan_chandef; 1485 enum nl80211_band hw_scan_band; 1486 int scan_channel_idx; 1487 int scan_ies_len; 1488 int hw_scan_ies_bufsize; 1489 struct cfg80211_scan_info scan_info; 1490 1491 struct wiphy_work sched_scan_stopped_work; 1492 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1493 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1494 u8 scan_addr[ETH_ALEN]; 1495 1496 unsigned long leave_oper_channel_time; 1497 enum mac80211_scan_state next_scan_state; 1498 struct wiphy_delayed_work scan_work; 1499 struct ieee80211_sub_if_data __rcu *scan_sdata; 1500 1501 /* Temporary remain-on-channel for off-channel operations */ 1502 struct ieee80211_channel *tmp_channel; 1503 1504 /* channel contexts */ 1505 struct list_head chanctx_list; 1506 1507 #ifdef CONFIG_MAC80211_LEDS 1508 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1509 struct led_trigger tpt_led; 1510 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1511 atomic_t radio_led_active, tpt_led_active; 1512 struct tpt_led_trigger *tpt_led_trigger; 1513 #endif 1514 1515 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1516 /* SNMP counters */ 1517 /* dot11CountersTable */ 1518 u32 dot11TransmittedFragmentCount; 1519 u32 dot11MulticastTransmittedFrameCount; 1520 u32 dot11FailedCount; 1521 u32 dot11RetryCount; 1522 u32 dot11MultipleRetryCount; 1523 u32 dot11FrameDuplicateCount; 1524 u32 dot11ReceivedFragmentCount; 1525 u32 dot11MulticastReceivedFrameCount; 1526 u32 dot11TransmittedFrameCount; 1527 1528 /* TX/RX handler statistics */ 1529 unsigned int tx_handlers_drop; 1530 unsigned int tx_handlers_queued; 1531 unsigned int tx_handlers_drop_wep; 1532 unsigned int tx_handlers_drop_not_assoc; 1533 unsigned int tx_handlers_drop_unauth_port; 1534 unsigned int rx_handlers_drop; 1535 unsigned int rx_handlers_queued; 1536 unsigned int rx_handlers_drop_nullfunc; 1537 unsigned int rx_handlers_drop_defrag; 1538 unsigned int tx_expand_skb_head; 1539 unsigned int tx_expand_skb_head_cloned; 1540 unsigned int rx_expand_skb_head_defrag; 1541 unsigned int rx_handlers_fragments; 1542 unsigned int tx_status_drop; 1543 #define I802_DEBUG_INC(c) (c)++ 1544 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1545 #define I802_DEBUG_INC(c) do { } while (0) 1546 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1547 1548 1549 int total_ps_buffered; /* total number of all buffered unicast and 1550 * multicast packets for power saving stations 1551 */ 1552 1553 bool pspolling; 1554 /* 1555 * PS can only be enabled when we have exactly one managed 1556 * interface (and monitors) in PS, this then points there. 1557 */ 1558 struct ieee80211_sub_if_data *ps_sdata; 1559 struct wiphy_work dynamic_ps_enable_work; 1560 struct wiphy_work dynamic_ps_disable_work; 1561 struct timer_list dynamic_ps_timer; 1562 struct notifier_block ifa_notifier; 1563 struct notifier_block ifa6_notifier; 1564 1565 /* 1566 * The dynamic ps timeout configured from user space via WEXT - 1567 * this will override whatever chosen by mac80211 internally. 1568 */ 1569 int dynamic_ps_forced_timeout; 1570 1571 int user_power_level; /* in dBm, for all interfaces */ 1572 1573 struct work_struct restart_work; 1574 1575 #ifdef CONFIG_MAC80211_DEBUGFS 1576 struct local_debugfsdentries { 1577 struct dentry *rcdir; 1578 struct dentry *keys; 1579 } debugfs; 1580 bool force_tx_status; 1581 #endif 1582 1583 /* 1584 * Remain-on-channel support 1585 */ 1586 struct wiphy_delayed_work roc_work; 1587 struct list_head roc_list; 1588 struct wiphy_work hw_roc_start, hw_roc_done; 1589 unsigned long hw_roc_start_time; 1590 u64 roc_cookie_counter; 1591 1592 struct idr ack_status_frames; 1593 spinlock_t ack_status_lock; 1594 1595 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1596 1597 /* virtual monitor interface */ 1598 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1599 struct ieee80211_chan_req monitor_chanreq; 1600 1601 /* extended capabilities provided by mac80211 */ 1602 u8 ext_capa[8]; 1603 1604 bool wbrf_supported; 1605 }; 1606 1607 static inline struct ieee80211_sub_if_data * 1608 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1609 { 1610 return netdev_priv(dev); 1611 } 1612 1613 static inline struct ieee80211_sub_if_data * 1614 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1615 { 1616 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1617 } 1618 1619 static inline struct ieee80211_supported_band * 1620 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1621 { 1622 struct ieee80211_local *local = sdata->local; 1623 struct ieee80211_chanctx_conf *chanctx_conf; 1624 enum nl80211_band band; 1625 1626 WARN_ON(ieee80211_vif_is_mld(&sdata->vif)); 1627 1628 rcu_read_lock(); 1629 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1630 1631 if (!chanctx_conf) { 1632 rcu_read_unlock(); 1633 return NULL; 1634 } 1635 1636 band = chanctx_conf->def.chan->band; 1637 rcu_read_unlock(); 1638 1639 return local->hw.wiphy->bands[band]; 1640 } 1641 1642 static inline struct ieee80211_supported_band * 1643 ieee80211_get_link_sband(struct ieee80211_link_data *link) 1644 { 1645 struct ieee80211_local *local = link->sdata->local; 1646 struct ieee80211_chanctx_conf *chanctx_conf; 1647 enum nl80211_band band; 1648 1649 rcu_read_lock(); 1650 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1651 if (!chanctx_conf) { 1652 rcu_read_unlock(); 1653 return NULL; 1654 } 1655 1656 band = chanctx_conf->def.chan->band; 1657 rcu_read_unlock(); 1658 1659 return local->hw.wiphy->bands[band]; 1660 } 1661 1662 /* this struct holds the value parsing from channel switch IE */ 1663 struct ieee80211_csa_ie { 1664 struct ieee80211_chan_req chanreq; 1665 u8 mode; 1666 u8 count; 1667 u8 ttl; 1668 u16 pre_value; 1669 u16 reason_code; 1670 u32 max_switch_time; 1671 }; 1672 1673 enum ieee80211_elems_parse_error { 1674 IEEE80211_PARSE_ERR_INVALID_END = BIT(0), 1675 IEEE80211_PARSE_ERR_DUP_ELEM = BIT(1), 1676 IEEE80211_PARSE_ERR_BAD_ELEM_SIZE = BIT(2), 1677 IEEE80211_PARSE_ERR_UNEXPECTED_ELEM = BIT(3), 1678 IEEE80211_PARSE_ERR_DUP_NEST_ML_BASIC = BIT(4), 1679 }; 1680 1681 /* Parsed Information Elements */ 1682 struct ieee802_11_elems { 1683 const u8 *ie_start; 1684 size_t total_len; 1685 u32 crc; 1686 1687 /* pointers to IEs */ 1688 const struct ieee80211_tdls_lnkie *lnk_id; 1689 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1690 const u8 *ext_capab; 1691 const u8 *ssid; 1692 const u8 *supp_rates; 1693 const u8 *ds_params; 1694 const struct ieee80211_tim_ie *tim; 1695 const u8 *rsn; 1696 const u8 *rsnx; 1697 const u8 *erp_info; 1698 const u8 *ext_supp_rates; 1699 const u8 *wmm_info; 1700 const u8 *wmm_param; 1701 const struct ieee80211_ht_cap *ht_cap_elem; 1702 const struct ieee80211_ht_operation *ht_operation; 1703 const struct ieee80211_vht_cap *vht_cap_elem; 1704 const struct ieee80211_vht_operation *vht_operation; 1705 const struct ieee80211_meshconf_ie *mesh_config; 1706 const u8 *he_cap; 1707 const struct ieee80211_he_operation *he_operation; 1708 const struct ieee80211_he_spr *he_spr; 1709 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1710 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1711 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1712 const u8 *uora_element; 1713 const u8 *mesh_id; 1714 const u8 *peering; 1715 const __le16 *awake_window; 1716 const u8 *preq; 1717 const u8 *prep; 1718 const u8 *perr; 1719 const struct ieee80211_rann_ie *rann; 1720 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1721 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1722 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1723 const u8 *max_channel_switch_time; 1724 const u8 *country_elem; 1725 const u8 *pwr_constr_elem; 1726 const u8 *cisco_dtpc_elem; 1727 const struct ieee80211_timeout_interval_ie *timeout_int; 1728 const u8 *opmode_notif; 1729 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1730 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1731 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1732 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1733 const struct ieee80211_bssid_index *bssid_index; 1734 u8 max_bssid_indicator; 1735 u8 dtim_count; 1736 u8 dtim_period; 1737 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1738 const struct ieee80211_s1g_cap *s1g_capab; 1739 const struct ieee80211_s1g_oper_ie *s1g_oper; 1740 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1741 const struct ieee80211_aid_response_ie *aid_resp; 1742 const struct ieee80211_eht_cap_elem *eht_cap; 1743 const struct ieee80211_eht_operation *eht_operation; 1744 const struct ieee80211_multi_link_elem *ml_basic; 1745 const struct ieee80211_multi_link_elem *ml_reconf; 1746 const struct ieee80211_bandwidth_indication *bandwidth_indication; 1747 const struct ieee80211_ttlm_elem *ttlm[IEEE80211_TTLM_MAX_CNT]; 1748 1749 /* length of them, respectively */ 1750 u8 ext_capab_len; 1751 u8 ssid_len; 1752 u8 supp_rates_len; 1753 u8 tim_len; 1754 u8 rsn_len; 1755 u8 rsnx_len; 1756 u8 ext_supp_rates_len; 1757 u8 wmm_info_len; 1758 u8 wmm_param_len; 1759 u8 he_cap_len; 1760 u8 mesh_id_len; 1761 u8 peering_len; 1762 u8 preq_len; 1763 u8 prep_len; 1764 u8 perr_len; 1765 u8 country_elem_len; 1766 u8 bssid_index_len; 1767 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1768 u8 tx_pwr_env_num; 1769 u8 eht_cap_len; 1770 1771 /* mult-link element can be de-fragmented and thus u8 is not sufficient */ 1772 size_t ml_basic_len; 1773 size_t ml_reconf_len; 1774 1775 u8 ttlm_num; 1776 1777 /* 1778 * store the per station profile pointer and length in case that the 1779 * parsing also handled Multi-Link element parsing for a specific link 1780 * ID. 1781 */ 1782 struct ieee80211_mle_per_sta_profile *prof; 1783 size_t sta_prof_len; 1784 1785 /* whether/which parse error occurred while retrieving these elements */ 1786 u8 parse_error; 1787 }; 1788 1789 static inline struct ieee80211_local *hw_to_local( 1790 struct ieee80211_hw *hw) 1791 { 1792 return container_of(hw, struct ieee80211_local, hw); 1793 } 1794 1795 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1796 { 1797 return container_of(txq, struct txq_info, txq); 1798 } 1799 1800 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1801 { 1802 struct txq_info *txqi = to_txq_info(txq); 1803 1804 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1805 } 1806 1807 static inline bool 1808 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1809 { 1810 return status->flag & RX_FLAG_MACTIME; 1811 } 1812 1813 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1814 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1815 1816 /* This function returns the number of multicast stations connected to this 1817 * interface. It returns -1 if that number is not tracked, that is for netdevs 1818 * not in AP or AP_VLAN mode or when using 4addr. 1819 */ 1820 static inline int 1821 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1822 { 1823 if (sdata->vif.type == NL80211_IFTYPE_AP) 1824 return atomic_read(&sdata->u.ap.num_mcast_sta); 1825 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1826 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1827 return -1; 1828 } 1829 1830 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1831 struct ieee80211_rx_status *status, 1832 unsigned int mpdu_len, 1833 unsigned int mpdu_offset); 1834 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1835 int ieee80211_hw_conf_chan(struct ieee80211_local *local); 1836 void ieee80211_hw_conf_init(struct ieee80211_local *local); 1837 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1838 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1839 u64 changed); 1840 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 1841 u64 changed); 1842 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 1843 struct ieee80211_link_data *link, 1844 u64 changed); 1845 void ieee80211_configure_filter(struct ieee80211_local *local); 1846 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1847 1848 void ieee80211_handle_queued_frames(struct ieee80211_local *local); 1849 1850 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1851 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1852 u64 *cookie, gfp_t gfp); 1853 1854 void ieee80211_check_fast_rx(struct sta_info *sta); 1855 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1856 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1857 void ieee80211_clear_fast_rx(struct sta_info *sta); 1858 1859 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata, 1860 const u8 *addr, int *out_link_id); 1861 1862 /* STA code */ 1863 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1864 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1865 struct cfg80211_auth_request *req); 1866 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1867 struct cfg80211_assoc_request *req); 1868 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1869 struct cfg80211_deauth_request *req); 1870 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1871 struct cfg80211_disassoc_request *req); 1872 void ieee80211_send_pspoll(struct ieee80211_local *local, 1873 struct ieee80211_sub_if_data *sdata); 1874 void ieee80211_recalc_ps(struct ieee80211_local *local); 1875 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1876 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1877 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1878 struct sk_buff *skb); 1879 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1880 struct sk_buff *skb); 1881 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1882 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1883 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1884 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1885 __le16 fc, bool acked); 1886 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1887 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1888 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1889 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1890 u8 reason, bool tx); 1891 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link); 1892 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link); 1893 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link); 1894 1895 /* IBSS code */ 1896 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1897 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1898 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1899 const u8 *bssid, const u8 *addr, u32 supp_rates); 1900 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1901 struct cfg80211_ibss_params *params); 1902 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1903 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1904 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1905 struct sk_buff *skb); 1906 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1907 struct cfg80211_csa_settings *csa_settings, 1908 u64 *changed); 1909 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata, 1910 u64 *changed); 1911 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1912 1913 /* OCB code */ 1914 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1915 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1916 const u8 *bssid, const u8 *addr, u32 supp_rates); 1917 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1918 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1919 struct ocb_setup *setup); 1920 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1921 1922 /* mesh code */ 1923 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1924 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1925 struct sk_buff *skb); 1926 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1927 struct cfg80211_csa_settings *csa_settings, 1928 u64 *changed); 1929 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata, 1930 u64 *changed); 1931 1932 /* scan/BSS handling */ 1933 void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work); 1934 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1935 const u8 *ssid, u8 ssid_len, 1936 struct ieee80211_channel **channels, 1937 unsigned int n_channels); 1938 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1939 struct cfg80211_scan_request *req); 1940 void ieee80211_scan_cancel(struct ieee80211_local *local); 1941 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1942 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1943 1944 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss, 1945 const struct cfg80211_bss_ies *ies, void *data); 1946 1947 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1948 struct ieee80211_bss * 1949 ieee80211_bss_info_update(struct ieee80211_local *local, 1950 struct ieee80211_rx_status *rx_status, 1951 struct ieee80211_mgmt *mgmt, 1952 size_t len, 1953 struct ieee80211_channel *channel); 1954 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1955 struct ieee80211_bss *bss); 1956 1957 /* scheduled scan handling */ 1958 int 1959 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1960 struct cfg80211_sched_scan_request *req); 1961 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1962 struct cfg80211_sched_scan_request *req); 1963 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1964 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1965 void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy, 1966 struct wiphy_work *work); 1967 1968 /* off-channel/mgmt-tx */ 1969 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1970 void ieee80211_offchannel_return(struct ieee80211_local *local); 1971 void ieee80211_roc_setup(struct ieee80211_local *local); 1972 void ieee80211_start_next_roc(struct ieee80211_local *local); 1973 void ieee80211_roc_purge(struct ieee80211_local *local, 1974 struct ieee80211_sub_if_data *sdata); 1975 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1976 struct ieee80211_channel *chan, 1977 unsigned int duration, u64 *cookie); 1978 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1979 struct wireless_dev *wdev, u64 cookie); 1980 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1981 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1982 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1983 struct wireless_dev *wdev, u64 cookie); 1984 1985 /* channel switch handling */ 1986 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work); 1987 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1988 struct cfg80211_csa_settings *params); 1989 1990 /* color change handling */ 1991 void ieee80211_color_change_finalize_work(struct wiphy *wiphy, 1992 struct wiphy_work *work); 1993 void ieee80211_color_collision_detection_work(struct work_struct *work); 1994 1995 /* interface handling */ 1996 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1997 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1998 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \ 1999 NETIF_F_HW_TC) 2000 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 2001 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 2002 MAC80211_SUPPORTED_FEATURES_RX) 2003 2004 int ieee80211_iface_init(void); 2005 void ieee80211_iface_exit(void); 2006 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 2007 unsigned char name_assign_type, 2008 struct wireless_dev **new_wdev, enum nl80211_iftype type, 2009 struct vif_params *params); 2010 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 2011 enum nl80211_iftype type); 2012 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 2013 void ieee80211_remove_interfaces(struct ieee80211_local *local); 2014 u32 ieee80211_idle_off(struct ieee80211_local *local); 2015 void ieee80211_recalc_idle(struct ieee80211_local *local); 2016 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 2017 const int offset); 2018 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 2019 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 2020 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 2021 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 2022 2023 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 2024 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 2025 bool update_bss); 2026 void ieee80211_recalc_offload(struct ieee80211_local *local); 2027 2028 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 2029 { 2030 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 2031 } 2032 2033 /* link handling */ 2034 void ieee80211_link_setup(struct ieee80211_link_data *link); 2035 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, 2036 int link_id, 2037 struct ieee80211_link_data *link, 2038 struct ieee80211_bss_conf *link_conf); 2039 void ieee80211_link_stop(struct ieee80211_link_data *link); 2040 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, 2041 u16 new_links, u16 dormant_links); 2042 static inline void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata) 2043 { 2044 ieee80211_vif_set_links(sdata, 0, 0); 2045 } 2046 2047 /* tx handling */ 2048 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 2049 void ieee80211_tx_pending(struct tasklet_struct *t); 2050 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 2051 struct net_device *dev); 2052 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 2053 struct net_device *dev); 2054 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 2055 struct net_device *dev); 2056 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 2057 struct net_device *dev, 2058 u32 info_flags, 2059 u32 ctrl_flags, 2060 u64 *cookie); 2061 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 2062 struct sk_buff_head *skbs); 2063 struct sk_buff * 2064 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2065 struct sk_buff *skb, u32 info_flags); 2066 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2067 int retry_count, bool send_to_cooked, 2068 struct ieee80211_tx_status *status); 2069 2070 void ieee80211_check_fast_xmit(struct sta_info *sta); 2071 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2072 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2073 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2074 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2075 const u8 *buf, size_t len, 2076 const u8 *dest, __be16 proto, bool unencrypted, 2077 int link_id, u64 *cookie); 2078 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2079 const u8 *buf, size_t len); 2080 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, 2081 struct sta_info *sta, 2082 struct ieee80211_fast_tx *fast_tx, 2083 struct sk_buff *skb, bool ampdu, 2084 const u8 *da, const u8 *sa); 2085 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, 2086 struct sta_info *sta, struct sk_buff *skb); 2087 2088 /* HT */ 2089 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2090 struct ieee80211_sta_ht_cap *ht_cap); 2091 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2092 struct ieee80211_supported_band *sband, 2093 const struct ieee80211_ht_cap *ht_cap_ie, 2094 struct link_sta_info *link_sta); 2095 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2096 const u8 *da, u16 tid, 2097 u16 initiator, u16 reason_code); 2098 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2099 enum ieee80211_smps_mode smps, const u8 *da, 2100 const u8 *bssid, int link_id); 2101 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2102 enum ieee80211_smps_mode smps_mode_new); 2103 2104 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2105 u16 initiator, u16 reason, bool stop); 2106 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 2107 u8 dialog_token, u16 timeout, 2108 u16 start_seq_num, u16 ba_policy, u16 tid, 2109 u16 buf_size, bool tx, bool auto_seq, 2110 const struct ieee80211_addba_ext_ie *addbaext); 2111 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2112 enum ieee80211_agg_stop_reason reason); 2113 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2114 struct sta_info *sta, 2115 struct ieee80211_mgmt *mgmt, size_t len); 2116 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2117 struct sta_info *sta, 2118 struct ieee80211_mgmt *mgmt, 2119 size_t len); 2120 void ieee80211_process_addba_request(struct ieee80211_local *local, 2121 struct sta_info *sta, 2122 struct ieee80211_mgmt *mgmt, 2123 size_t len); 2124 2125 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2126 enum ieee80211_agg_stop_reason reason); 2127 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2128 struct tid_ampdu_tx *tid_tx); 2129 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2130 struct tid_ampdu_tx *tid_tx); 2131 void ieee80211_ba_session_work(struct wiphy *wiphy, struct wiphy_work *work); 2132 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2133 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2134 2135 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2136 enum nl80211_smps_mode 2137 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2138 2139 /* VHT */ 2140 void 2141 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2142 struct ieee80211_supported_band *sband, 2143 const struct ieee80211_vht_cap *vht_cap_ie, 2144 const struct ieee80211_vht_cap *vht_cap_ie2, 2145 struct link_sta_info *link_sta); 2146 enum ieee80211_sta_rx_bandwidth 2147 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta); 2148 enum ieee80211_sta_rx_bandwidth 2149 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta); 2150 void ieee80211_sta_init_nss(struct link_sta_info *link_sta); 2151 enum ieee80211_sta_rx_bandwidth 2152 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2153 enum nl80211_chan_width 2154 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta); 2155 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2156 struct ieee80211_link_data *link, 2157 struct ieee80211_mgmt *mgmt); 2158 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2159 struct link_sta_info *sta, 2160 u8 opmode, enum nl80211_band band); 2161 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2162 struct link_sta_info *sta, 2163 u8 opmode, enum nl80211_band band); 2164 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2165 struct ieee80211_sta_vht_cap *vht_cap); 2166 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2167 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2168 enum nl80211_chan_width 2169 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta); 2170 2171 /* HE */ 2172 void 2173 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2174 struct ieee80211_supported_band *sband, 2175 const u8 *he_cap_ie, u8 he_cap_len, 2176 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2177 struct link_sta_info *link_sta); 2178 void 2179 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2180 const struct ieee80211_he_spr *he_spr_ie_elem); 2181 2182 void 2183 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2184 const struct ieee80211_he_operation *he_op_ie_elem); 2185 2186 /* S1G */ 2187 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2188 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2189 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2190 struct sk_buff *skb); 2191 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2192 struct sk_buff *skb); 2193 2194 /* Spectrum management */ 2195 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2196 struct ieee80211_mgmt *mgmt, 2197 size_t len); 2198 /** 2199 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2200 * @sdata: the sdata of the interface which has received the frame 2201 * @elems: parsed 802.11 elements received with the frame 2202 * @current_band: indicates the current band 2203 * @vht_cap_info: VHT capabilities of the transmitter 2204 * @conn: contains information about own capabilities and restrictions 2205 * to decide which channel switch announcements can be accepted 2206 * @bssid: the currently connected bssid (for reporting) 2207 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2208 * All of them will be filled with if success only. 2209 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2210 */ 2211 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2212 struct ieee802_11_elems *elems, 2213 enum nl80211_band current_band, 2214 u32 vht_cap_info, 2215 struct ieee80211_conn_settings *conn, 2216 u8 *bssid, 2217 struct ieee80211_csa_ie *csa_ie); 2218 2219 /* Suspend/resume and hw reconfiguration */ 2220 int ieee80211_reconfig(struct ieee80211_local *local); 2221 void ieee80211_stop_device(struct ieee80211_local *local); 2222 2223 int __ieee80211_suspend(struct ieee80211_hw *hw, 2224 struct cfg80211_wowlan *wowlan); 2225 2226 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2227 { 2228 struct ieee80211_local *local = hw_to_local(hw); 2229 2230 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2231 !test_bit(SCAN_COMPLETED, &local->scanning), 2232 "%s: resume with hardware scan still in progress\n", 2233 wiphy_name(hw->wiphy)); 2234 2235 return ieee80211_reconfig(hw_to_local(hw)); 2236 } 2237 2238 /* utility functions/constants */ 2239 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2240 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode); 2241 enum ieee80211_conn_bw_limit 2242 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef); 2243 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2244 int rate, int erp, int short_preamble); 2245 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2246 struct ieee80211_tx_queue_params *qparam, 2247 int ac); 2248 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 2249 bool bss_notify, bool enable_qos); 2250 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2251 struct sta_info *sta, struct sk_buff *skb); 2252 2253 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2254 struct sk_buff *skb, int tid, int link_id, 2255 enum nl80211_band band); 2256 2257 /* sta_out needs to be checked for ERR_PTR() before using */ 2258 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2259 struct sk_buff *skb, 2260 struct sta_info **sta_out); 2261 2262 static inline void 2263 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2264 struct sk_buff *skb, int tid, 2265 enum nl80211_band band) 2266 { 2267 rcu_read_lock(); 2268 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band); 2269 rcu_read_unlock(); 2270 } 2271 2272 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2273 struct sk_buff *skb, int tid, int link_id); 2274 2275 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2276 struct sk_buff *skb) 2277 { 2278 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2279 ieee80211_tx_skb_tid(sdata, skb, 7, -1); 2280 } 2281 2282 /** 2283 * struct ieee80211_elems_parse_params - element parsing parameters 2284 * @mode: connection mode for parsing 2285 * @start: pointer to the elements 2286 * @len: length of the elements 2287 * @action: %true if the elements came from an action frame 2288 * @filter: bitmap of element IDs to filter out while calculating 2289 * the element CRC 2290 * @crc: CRC starting value 2291 * @bss: the BSS to parse this as, for multi-BSSID cases this can 2292 * represent a non-transmitting BSS in which case the data 2293 * for that non-transmitting BSS is returned 2294 * @link_id: the link ID to parse elements for, if a STA profile 2295 * is present in the multi-link element, or -1 to ignore; 2296 * note that the code currently assumes parsing an association 2297 * (or re-association) response frame if this is given 2298 * @from_ap: frame is received from an AP (currently used only 2299 * for EHT capabilities parsing) 2300 */ 2301 struct ieee80211_elems_parse_params { 2302 enum ieee80211_conn_mode mode; 2303 const u8 *start; 2304 size_t len; 2305 bool action; 2306 u64 filter; 2307 u32 crc; 2308 struct cfg80211_bss *bss; 2309 int link_id; 2310 bool from_ap; 2311 }; 2312 2313 struct ieee802_11_elems * 2314 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params); 2315 2316 static inline struct ieee802_11_elems * 2317 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2318 u64 filter, u32 crc, 2319 struct cfg80211_bss *bss) 2320 { 2321 struct ieee80211_elems_parse_params params = { 2322 .mode = IEEE80211_CONN_MODE_HIGHEST, 2323 .start = start, 2324 .len = len, 2325 .action = action, 2326 .filter = filter, 2327 .crc = crc, 2328 .bss = bss, 2329 .link_id = -1, 2330 }; 2331 2332 return ieee802_11_parse_elems_full(¶ms); 2333 } 2334 2335 static inline struct ieee802_11_elems * 2336 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2337 struct cfg80211_bss *bss) 2338 { 2339 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss); 2340 } 2341 2342 extern const int ieee802_1d_to_ac[8]; 2343 2344 static inline int ieee80211_ac_from_tid(int tid) 2345 { 2346 return ieee802_1d_to_ac[tid & 7]; 2347 } 2348 2349 void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy, 2350 struct wiphy_work *work); 2351 void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy, 2352 struct wiphy_work *work); 2353 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2354 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2355 struct ieee80211_sub_if_data *sdata, 2356 bool powersave); 2357 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2358 struct ieee80211_sub_if_data *sdata); 2359 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2360 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2361 2362 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2363 unsigned long queues, 2364 enum queue_stop_reason reason, 2365 bool refcounted); 2366 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2367 struct ieee80211_sub_if_data *sdata, 2368 enum queue_stop_reason reason); 2369 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2370 struct ieee80211_sub_if_data *sdata, 2371 enum queue_stop_reason reason); 2372 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2373 unsigned long queues, 2374 enum queue_stop_reason reason, 2375 bool refcounted); 2376 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2377 enum queue_stop_reason reason, 2378 bool refcounted); 2379 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2380 enum queue_stop_reason reason, 2381 bool refcounted); 2382 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2383 struct sk_buff *skb); 2384 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2385 struct sk_buff_head *skbs); 2386 void ieee80211_flush_queues(struct ieee80211_local *local, 2387 struct ieee80211_sub_if_data *sdata, bool drop); 2388 void __ieee80211_flush_queues(struct ieee80211_local *local, 2389 struct ieee80211_sub_if_data *sdata, 2390 unsigned int queues, bool drop); 2391 2392 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2393 { 2394 /* 2395 * It's unsafe to try to do any work during reconfigure flow. 2396 * When the flow ends the work will be requeued. 2397 */ 2398 if (local->in_reconfig) 2399 return false; 2400 2401 /* 2402 * If quiescing is set, we are racing with __ieee80211_suspend. 2403 * __ieee80211_suspend flushes the workers after setting quiescing, 2404 * and we check quiescing / suspended before enqueing new workers. 2405 * We should abort the worker to avoid the races below. 2406 */ 2407 if (local->quiescing) 2408 return false; 2409 2410 /* 2411 * We might already be suspended if the following scenario occurs: 2412 * __ieee80211_suspend Control path 2413 * 2414 * if (local->quiescing) 2415 * return; 2416 * local->quiescing = true; 2417 * flush_workqueue(); 2418 * queue_work(...); 2419 * local->suspended = true; 2420 * local->quiescing = false; 2421 * worker starts running... 2422 */ 2423 if (local->suspended) 2424 return false; 2425 2426 return true; 2427 } 2428 2429 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2430 void ieee80211_txq_set_params(struct ieee80211_local *local); 2431 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2432 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2433 struct sta_info *sta, 2434 struct txq_info *txq, int tid); 2435 void ieee80211_txq_purge(struct ieee80211_local *local, 2436 struct txq_info *txqi); 2437 void ieee80211_purge_sta_txqs(struct sta_info *sta); 2438 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2439 struct ieee80211_sub_if_data *sdata); 2440 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2441 struct txq_info *txqi); 2442 void ieee80211_wake_txqs(struct tasklet_struct *t); 2443 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2444 u16 transaction, u16 auth_alg, u16 status, 2445 const u8 *extra, size_t extra_len, const u8 *bssid, 2446 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2447 u32 tx_flags); 2448 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2449 const u8 *da, const u8 *bssid, 2450 u16 stype, u16 reason, 2451 bool send_frame, u8 *frame_buf); 2452 2453 enum { 2454 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2455 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2456 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2457 }; 2458 2459 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2460 size_t buffer_len, 2461 struct ieee80211_scan_ies *ie_desc, 2462 const u8 *ie, size_t ie_len, 2463 u8 bands_used, u32 *rate_masks, 2464 struct cfg80211_chan_def *chandef, 2465 u32 flags); 2466 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2467 const u8 *src, const u8 *dst, 2468 u32 ratemask, 2469 struct ieee80211_channel *chan, 2470 const u8 *ssid, size_t ssid_len, 2471 const u8 *ie, size_t ie_len, 2472 u32 flags); 2473 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2474 struct ieee802_11_elems *elems, 2475 enum nl80211_band band, u32 *basic_rates); 2476 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2477 struct ieee80211_link_data *link, 2478 enum ieee80211_smps_mode smps_mode); 2479 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2480 struct ieee80211_link_data *link); 2481 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2482 int link_id); 2483 2484 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2485 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2486 u16 cap); 2487 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2488 const struct cfg80211_chan_def *chandef, 2489 u16 prot_mode, bool rifs_mode); 2490 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2491 const struct cfg80211_chan_def *chandef); 2492 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2493 u32 cap); 2494 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2495 const struct cfg80211_chan_def *chandef); 2496 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata); 2497 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2498 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef, 2499 const struct ieee80211_sta_eht_cap *eht_cap); 2500 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 2501 const struct ieee80211_supported_band *sband, 2502 const u8 *srates, int srates_len, u32 *rates); 2503 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2504 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2505 struct ieee80211_sta_s1g_cap *caps, 2506 struct sk_buff *skb); 2507 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2508 struct sk_buff *skb); 2509 2510 /* element building in SKBs */ 2511 int ieee80211_put_srates_elem(struct sk_buff *skb, 2512 const struct ieee80211_supported_band *sband, 2513 u32 basic_rates, u32 rate_flags, u32 masked_rates, 2514 u8 element_id); 2515 int ieee80211_put_he_cap(struct sk_buff *skb, 2516 struct ieee80211_sub_if_data *sdata, 2517 const struct ieee80211_supported_band *sband, 2518 const struct ieee80211_conn_settings *conn); 2519 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2520 struct ieee80211_sub_if_data *sdata, 2521 enum ieee80211_smps_mode smps_mode); 2522 int ieee80211_put_eht_cap(struct sk_buff *skb, 2523 struct ieee80211_sub_if_data *sdata, 2524 const struct ieee80211_supported_band *sband, 2525 const struct ieee80211_conn_settings *conn); 2526 2527 /* channel management */ 2528 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2529 struct cfg80211_chan_def *chandef); 2530 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2531 const struct ieee80211_vht_operation *oper, 2532 const struct ieee80211_ht_operation *htop, 2533 struct cfg80211_chan_def *chandef); 2534 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 2535 struct cfg80211_chan_def *chandef); 2536 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 2537 const struct ieee80211_he_operation *he_oper, 2538 const struct ieee80211_eht_operation *eht_oper, 2539 struct cfg80211_chan_def *chandef); 2540 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2541 struct cfg80211_chan_def *chandef); 2542 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *chandef, 2543 struct ieee80211_conn_settings *conn); 2544 static inline void 2545 ieee80211_chanreq_downgrade(struct ieee80211_chan_req *chanreq, 2546 struct ieee80211_conn_settings *conn) 2547 { 2548 ieee80211_chandef_downgrade(&chanreq->oper, conn); 2549 if (WARN_ON(!conn)) 2550 return; 2551 if (conn->mode < IEEE80211_CONN_MODE_EHT) 2552 chanreq->ap.chan = NULL; 2553 } 2554 2555 bool ieee80211_chanreq_identical(const struct ieee80211_chan_req *a, 2556 const struct ieee80211_chan_req *b); 2557 2558 int __must_check 2559 _ieee80211_link_use_channel(struct ieee80211_link_data *link, 2560 const struct ieee80211_chan_req *req, 2561 enum ieee80211_chanctx_mode mode, 2562 bool assign_on_failure); 2563 2564 static inline int __must_check 2565 ieee80211_link_use_channel(struct ieee80211_link_data *link, 2566 const struct ieee80211_chan_req *req, 2567 enum ieee80211_chanctx_mode mode) 2568 { 2569 return _ieee80211_link_use_channel(link, req, mode, false); 2570 } 2571 2572 int __must_check 2573 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, 2574 const struct ieee80211_chan_req *req, 2575 enum ieee80211_chanctx_mode mode, 2576 bool radar_required); 2577 int __must_check 2578 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link); 2579 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link); 2580 2581 int __must_check 2582 ieee80211_link_change_chanreq(struct ieee80211_link_data *link, 2583 const struct ieee80211_chan_req *req, 2584 u64 *changed); 2585 void __ieee80211_link_release_channel(struct ieee80211_link_data *link, 2586 bool skip_idle_recalc); 2587 void ieee80211_link_release_channel(struct ieee80211_link_data *link); 2588 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link); 2589 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, 2590 bool clear); 2591 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2592 struct ieee80211_chanctx *ctx); 2593 2594 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2595 struct ieee80211_chanctx *chanctx); 2596 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2597 struct ieee80211_chanctx *ctx, 2598 struct ieee80211_link_data *rsvd_for); 2599 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2600 2601 void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work); 2602 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2603 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 2604 struct wiphy_work *work); 2605 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2606 struct cfg80211_csa_settings *csa_settings); 2607 2608 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2609 struct ieee80211_sub_if_data *sdata); 2610 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2611 const struct cfg80211_chan_def *chandef, 2612 enum ieee80211_chanctx_mode chanmode, 2613 u8 radar_detect); 2614 int ieee80211_max_num_channels(struct ieee80211_local *local); 2615 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2616 struct ieee80211_chanctx *ctx); 2617 2618 /* TDLS */ 2619 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2620 const u8 *peer, int link_id, 2621 u8 action_code, u8 dialog_token, u16 status_code, 2622 u32 peer_capability, bool initiator, 2623 const u8 *extra_ies, size_t extra_ies_len); 2624 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2625 const u8 *peer, enum nl80211_tdls_operation oper); 2626 void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk); 2627 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2628 const u8 *addr, u8 oper_class, 2629 struct cfg80211_chan_def *chandef); 2630 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2631 struct net_device *dev, 2632 const u8 *addr); 2633 void ieee80211_teardown_tdls_peers(struct ieee80211_link_data *link); 2634 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2635 const u8 *peer, u16 reason); 2636 void 2637 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2638 struct sk_buff *skb); 2639 2640 2641 const char *ieee80211_get_reason_code_string(u16 reason_code); 2642 u16 ieee80211_encode_usf(int val); 2643 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2644 enum nl80211_iftype type); 2645 2646 extern const struct ethtool_ops ieee80211_ethtool_ops; 2647 2648 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2649 struct ieee80211_vif *vif, 2650 struct ieee80211_sta *pubsta, 2651 int len, bool ampdu); 2652 #ifdef CONFIG_MAC80211_NOINLINE 2653 #define debug_noinline noinline 2654 #else 2655 #define debug_noinline 2656 #endif 2657 2658 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2659 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2660 2661 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata); 2662 2663 void 2664 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2665 struct ieee80211_supported_band *sband, 2666 const u8 *he_cap_ie, u8 he_cap_len, 2667 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2668 u8 eht_cap_len, 2669 struct link_sta_info *link_sta); 2670 void ieee80211_process_neg_ttlm_req(struct ieee80211_sub_if_data *sdata, 2671 struct ieee80211_mgmt *mgmt, size_t len); 2672 void ieee80211_process_neg_ttlm_res(struct ieee80211_sub_if_data *sdata, 2673 struct ieee80211_mgmt *mgmt, size_t len); 2674 int ieee80211_req_neg_ttlm(struct ieee80211_sub_if_data *sdata, 2675 struct cfg80211_ttlm_params *params); 2676 2677 void ieee80211_check_wbrf_support(struct ieee80211_local *local); 2678 void ieee80211_add_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef); 2679 void ieee80211_remove_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef); 2680 2681 #if IS_ENABLED(CONFIG_MAC80211_KUNIT_TEST) 2682 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym) 2683 #define VISIBLE_IF_MAC80211_KUNIT 2684 ieee80211_rx_result 2685 ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx); 2686 #else 2687 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) 2688 #define VISIBLE_IF_MAC80211_KUNIT static 2689 #endif 2690 2691 #endif /* IEEE80211_I_H */ 2692