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) 2018-2021 Intel Corporation 9 */ 10 11 #ifndef IEEE80211_I_H 12 #define IEEE80211_I_H 13 14 #include <linux/kernel.h> 15 #include <linux/device.h> 16 #include <linux/if_ether.h> 17 #include <linux/interrupt.h> 18 #include <linux/list.h> 19 #include <linux/netdevice.h> 20 #include <linux/skbuff.h> 21 #include <linux/workqueue.h> 22 #include <linux/types.h> 23 #include <linux/spinlock.h> 24 #include <linux/etherdevice.h> 25 #include <linux/leds.h> 26 #include <linux/idr.h> 27 #include <linux/rhashtable.h> 28 #include <linux/rbtree.h> 29 #include <net/ieee80211_radiotap.h> 30 #include <net/cfg80211.h> 31 #include <net/mac80211.h> 32 #include <net/fq.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 37 extern const struct cfg80211_ops mac80211_config_ops; 38 39 struct ieee80211_local; 40 41 /* Maximum number of broadcast/multicast frames to buffer when some of the 42 * associated stations are using power saving. */ 43 #define AP_MAX_BC_BUFFER 128 44 45 /* Maximum number of frames buffered to all STAs, including multicast frames. 46 * Note: increasing this limit increases the potential memory requirement. Each 47 * frame can be up to about 2 kB long. */ 48 #define TOTAL_MAX_TX_BUFFER 512 49 50 /* Required encryption head and tailroom */ 51 #define IEEE80211_ENCRYPT_HEADROOM 8 52 #define IEEE80211_ENCRYPT_TAILROOM 18 53 54 /* power level hasn't been configured (or set to automatic) */ 55 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 56 57 /* 58 * Some APs experience problems when working with U-APSD. Decreasing the 59 * probability of that happening by using legacy mode for all ACs but VO isn't 60 * enough. 61 * 62 * Cisco 4410N originally forced us to enable VO by default only because it 63 * treated non-VO ACs as legacy. 64 * 65 * However some APs (notably Netgear R7000) silently reclassify packets to 66 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 67 * clients would never see some frames (e.g. ARP responses) or would fetch them 68 * accidentally after a long time. 69 * 70 * It makes little sense to enable u-APSD queues by default because it needs 71 * userspace applications to be aware of it to actually take advantage of the 72 * possible additional powersavings. Implicitly depending on driver autotrigger 73 * frame support doesn't make much sense. 74 */ 75 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 76 77 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 78 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 79 80 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 81 82 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 83 84 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 85 86 struct ieee80211_bss { 87 u32 device_ts_beacon, device_ts_presp; 88 89 bool wmm_used; 90 bool uapsd_supported; 91 92 #define IEEE80211_MAX_SUPP_RATES 32 93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 94 size_t supp_rates_len; 95 struct ieee80211_rate *beacon_rate; 96 97 u32 vht_cap_info; 98 99 /* 100 * During association, we save an ERP value from a probe response so 101 * that we can feed ERP info to the driver when handling the 102 * association completes. these fields probably won't be up-to-date 103 * otherwise, you probably don't want to use them. 104 */ 105 bool has_erp_value; 106 u8 erp_value; 107 108 /* Keep track of the corruption of the last beacon/probe response. */ 109 u8 corrupt_data; 110 111 /* Keep track of what bits of information we have valid info for. */ 112 u8 valid_data; 113 }; 114 115 /** 116 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 117 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 118 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 119 * 120 * These are bss flags that are attached to a bss in the 121 * @corrupt_data field of &struct ieee80211_bss. 122 */ 123 enum ieee80211_bss_corrupt_data_flags { 124 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 125 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 126 }; 127 128 /** 129 * enum ieee80211_valid_data_flags - BSS valid data flags 130 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 131 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 132 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 133 * 134 * These are bss flags that are attached to a bss in the 135 * @valid_data field of &struct ieee80211_bss. They show which parts 136 * of the data structure were received as a result of an un-corrupted 137 * beacon/probe response. 138 */ 139 enum ieee80211_bss_valid_data_flags { 140 IEEE80211_BSS_VALID_WMM = BIT(1), 141 IEEE80211_BSS_VALID_RATES = BIT(2), 142 IEEE80211_BSS_VALID_ERP = BIT(3) 143 }; 144 145 typedef unsigned __bitwise ieee80211_tx_result; 146 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 147 #define TX_DROP ((__force ieee80211_tx_result) 1u) 148 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 149 150 #define IEEE80211_TX_UNICAST BIT(1) 151 #define IEEE80211_TX_PS_BUFFERED BIT(2) 152 153 struct ieee80211_tx_data { 154 struct sk_buff *skb; 155 struct sk_buff_head skbs; 156 struct ieee80211_local *local; 157 struct ieee80211_sub_if_data *sdata; 158 struct sta_info *sta; 159 struct ieee80211_key *key; 160 struct ieee80211_tx_rate rate; 161 162 unsigned int flags; 163 }; 164 165 166 typedef unsigned __bitwise ieee80211_rx_result; 167 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 168 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 169 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 170 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 171 172 /** 173 * enum ieee80211_packet_rx_flags - packet RX flags 174 * @IEEE80211_RX_AMSDU: a-MSDU packet 175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 177 * 178 * These are per-frame flags that are attached to a frame in the 179 * @rx_flags field of &struct ieee80211_rx_status. 180 */ 181 enum ieee80211_packet_rx_flags { 182 IEEE80211_RX_AMSDU = BIT(3), 183 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 184 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 185 }; 186 187 /** 188 * enum ieee80211_rx_flags - RX data flags 189 * 190 * @IEEE80211_RX_CMNTR: received on cooked monitor already 191 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 192 * to cfg80211_report_obss_beacon(). 193 * 194 * These flags are used across handling multiple interfaces 195 * for a single frame. 196 */ 197 enum ieee80211_rx_flags { 198 IEEE80211_RX_CMNTR = BIT(0), 199 IEEE80211_RX_BEACON_REPORTED = BIT(1), 200 }; 201 202 struct ieee80211_rx_data { 203 struct list_head *list; 204 struct sk_buff *skb; 205 struct ieee80211_local *local; 206 struct ieee80211_sub_if_data *sdata; 207 struct sta_info *sta; 208 struct ieee80211_key *key; 209 210 unsigned int flags; 211 212 /* 213 * Index into sequence numbers array, 0..16 214 * since the last (16) is used for non-QoS, 215 * will be 16 on non-QoS frames. 216 */ 217 int seqno_idx; 218 219 /* 220 * Index into the security IV/PN arrays, 0..16 221 * since the last (16) is used for CCMP-encrypted 222 * management frames, will be set to 16 on mgmt 223 * frames and 0 on non-QoS frames. 224 */ 225 int security_idx; 226 227 union { 228 struct { 229 u32 iv32; 230 u16 iv16; 231 } tkip; 232 struct { 233 u8 pn[IEEE80211_CCMP_PN_LEN]; 234 } ccm_gcm; 235 }; 236 }; 237 238 struct ieee80211_csa_settings { 239 const u16 *counter_offsets_beacon; 240 const u16 *counter_offsets_presp; 241 242 int n_counter_offsets_beacon; 243 int n_counter_offsets_presp; 244 245 u8 count; 246 }; 247 248 struct ieee80211_color_change_settings { 249 u16 counter_offset_beacon; 250 u16 counter_offset_presp; 251 u8 count; 252 }; 253 254 struct beacon_data { 255 u8 *head, *tail; 256 int head_len, tail_len; 257 struct ieee80211_meshconf_ie *meshconf; 258 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 259 u8 cntdwn_current_counter; 260 struct cfg80211_mbssid_elems *mbssid_ies; 261 struct rcu_head rcu_head; 262 }; 263 264 struct probe_resp { 265 struct rcu_head rcu_head; 266 int len; 267 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 268 u8 data[]; 269 }; 270 271 struct fils_discovery_data { 272 struct rcu_head rcu_head; 273 int len; 274 u8 data[]; 275 }; 276 277 struct unsol_bcast_probe_resp_data { 278 struct rcu_head rcu_head; 279 int len; 280 u8 data[]; 281 }; 282 283 struct ps_data { 284 /* yes, this looks ugly, but guarantees that we can later use 285 * bitmap_empty :) 286 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 287 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 288 __aligned(__alignof__(unsigned long)); 289 struct sk_buff_head bc_buf; 290 atomic_t num_sta_ps; /* number of stations in PS mode */ 291 int dtim_count; 292 bool dtim_bc_mc; 293 }; 294 295 struct ieee80211_if_ap { 296 struct beacon_data __rcu *beacon; 297 struct probe_resp __rcu *probe_resp; 298 struct fils_discovery_data __rcu *fils_discovery; 299 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 300 301 /* to be used after channel switch. */ 302 struct cfg80211_beacon_data *next_beacon; 303 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 304 305 struct ps_data ps; 306 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 307 308 bool multicast_to_unicast; 309 }; 310 311 struct ieee80211_if_vlan { 312 struct list_head list; /* write-protected with RTNL and local->mtx */ 313 314 /* used for all tx if the VLAN is configured to 4-addr mode */ 315 struct sta_info __rcu *sta; 316 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 317 }; 318 319 struct mesh_stats { 320 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 321 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 322 __u32 fwded_frames; /* Mesh total forwarded frames */ 323 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 324 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 325 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 326 }; 327 328 #define PREQ_Q_F_START 0x1 329 #define PREQ_Q_F_REFRESH 0x2 330 struct mesh_preq_queue { 331 struct list_head list; 332 u8 dst[ETH_ALEN]; 333 u8 flags; 334 }; 335 336 struct ieee80211_roc_work { 337 struct list_head list; 338 339 struct ieee80211_sub_if_data *sdata; 340 341 struct ieee80211_channel *chan; 342 343 bool started, abort, hw_begun, notified; 344 bool on_channel; 345 346 unsigned long start_time; 347 348 u32 duration, req_duration; 349 struct sk_buff *frame; 350 u64 cookie, mgmt_tx_cookie; 351 enum ieee80211_roc_type type; 352 }; 353 354 /* flags used in struct ieee80211_if_managed.flags */ 355 enum ieee80211_sta_flags { 356 IEEE80211_STA_CONNECTION_POLL = BIT(1), 357 IEEE80211_STA_CONTROL_PORT = BIT(2), 358 IEEE80211_STA_DISABLE_HT = BIT(4), 359 IEEE80211_STA_MFP_ENABLED = BIT(6), 360 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 361 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 362 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 363 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 364 IEEE80211_STA_DISABLE_VHT = BIT(11), 365 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 366 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 367 IEEE80211_STA_DISABLE_WMM = BIT(14), 368 IEEE80211_STA_ENABLE_RRM = BIT(15), 369 IEEE80211_STA_DISABLE_HE = BIT(16), 370 IEEE80211_STA_DISABLE_EHT = BIT(17), 371 IEEE80211_STA_DISABLE_320MHZ = BIT(18), 372 }; 373 374 struct ieee80211_mgd_auth_data { 375 struct cfg80211_bss *bss; 376 unsigned long timeout; 377 int tries; 378 u16 algorithm, expected_transaction; 379 380 u8 key[WLAN_KEY_LEN_WEP104]; 381 u8 key_len, key_idx; 382 bool done, waiting; 383 bool peer_confirmed; 384 bool timeout_started; 385 386 u16 sae_trans, sae_status; 387 size_t data_len; 388 u8 data[]; 389 }; 390 391 struct ieee80211_mgd_assoc_data { 392 struct cfg80211_bss *bss; 393 const u8 *supp_rates; 394 395 unsigned long timeout; 396 int tries; 397 398 u16 capability; 399 u8 prev_bssid[ETH_ALEN]; 400 u8 ssid[IEEE80211_MAX_SSID_LEN]; 401 u8 ssid_len; 402 u8 supp_rates_len; 403 bool wmm, uapsd; 404 bool need_beacon; 405 bool synced; 406 bool timeout_started; 407 408 u8 ap_ht_param; 409 410 struct ieee80211_vht_cap ap_vht_cap; 411 412 u8 fils_nonces[2 * FILS_NONCE_LEN]; 413 u8 fils_kek[FILS_MAX_KEK_LEN]; 414 size_t fils_kek_len; 415 416 size_t ie_len; 417 u8 ie[]; 418 }; 419 420 struct ieee80211_sta_tx_tspec { 421 /* timestamp of the first packet in the time slice */ 422 unsigned long time_slice_start; 423 424 u32 admitted_time; /* in usecs, unlike over the air */ 425 u8 tsid; 426 s8 up; /* signed to be able to invalidate with -1 during teardown */ 427 428 /* consumed TX time in microseconds in the time slice */ 429 u32 consumed_tx_time; 430 enum { 431 TX_TSPEC_ACTION_NONE = 0, 432 TX_TSPEC_ACTION_DOWNGRADE, 433 TX_TSPEC_ACTION_STOP_DOWNGRADE, 434 } action; 435 bool downgraded; 436 }; 437 438 DECLARE_EWMA(beacon_signal, 4, 4) 439 440 struct ieee80211_if_managed { 441 struct timer_list timer; 442 struct timer_list conn_mon_timer; 443 struct timer_list bcn_mon_timer; 444 struct timer_list chswitch_timer; 445 struct work_struct monitor_work; 446 struct work_struct chswitch_work; 447 struct work_struct beacon_connection_loss_work; 448 struct work_struct csa_connection_drop_work; 449 450 unsigned long beacon_timeout; 451 unsigned long probe_timeout; 452 int probe_send_count; 453 bool nullfunc_failed; 454 u8 connection_loss:1, 455 driver_disconnect:1, 456 reconnect:1; 457 458 struct cfg80211_bss *associated; 459 struct ieee80211_mgd_auth_data *auth_data; 460 struct ieee80211_mgd_assoc_data *assoc_data; 461 462 u8 bssid[ETH_ALEN] __aligned(2); 463 464 bool powersave; /* powersave requested for this iface */ 465 bool broken_ap; /* AP is broken -- turn off powersave */ 466 bool have_beacon; 467 u8 dtim_period; 468 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 469 driver_smps_mode; /* smps mode request */ 470 471 struct work_struct request_smps_work; 472 473 unsigned int flags; 474 475 bool csa_waiting_bcn; 476 bool csa_ignored_same_chan; 477 478 bool beacon_crc_valid; 479 u32 beacon_crc; 480 481 bool status_acked; 482 bool status_received; 483 __le16 status_fc; 484 485 enum { 486 IEEE80211_MFP_DISABLED, 487 IEEE80211_MFP_OPTIONAL, 488 IEEE80211_MFP_REQUIRED 489 } mfp; /* management frame protection */ 490 491 /* 492 * Bitmask of enabled u-apsd queues, 493 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 494 * to take effect. 495 */ 496 unsigned int uapsd_queues; 497 498 /* 499 * Maximum number of buffered frames AP can deliver during a 500 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 501 * Needs a new association to take effect. 502 */ 503 unsigned int uapsd_max_sp_len; 504 505 int wmm_last_param_set; 506 int mu_edca_last_param_set; 507 508 u8 use_4addr; 509 510 s16 p2p_noa_index; 511 512 struct ewma_beacon_signal ave_beacon_signal; 513 514 /* 515 * Number of Beacon frames used in ave_beacon_signal. This can be used 516 * to avoid generating less reliable cqm events that would be based 517 * only on couple of received frames. 518 */ 519 unsigned int count_beacon_signal; 520 521 /* Number of times beacon loss was invoked. */ 522 unsigned int beacon_loss_count; 523 524 /* 525 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 526 * that triggered a cqm event. 0 indicates that no event has been 527 * generated for the current association. 528 */ 529 int last_cqm_event_signal; 530 531 /* 532 * State variables for keeping track of RSSI of the AP currently 533 * connected to and informing driver when RSSI has gone 534 * below/above a certain threshold. 535 */ 536 int rssi_min_thold, rssi_max_thold; 537 int last_ave_beacon_signal; 538 539 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 540 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 541 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 542 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 543 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 544 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 545 546 /* TDLS support */ 547 u8 tdls_peer[ETH_ALEN] __aligned(2); 548 struct delayed_work tdls_peer_del_work; 549 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 550 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 551 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 552 bool tdls_chan_switch_prohibited; 553 bool tdls_wider_bw_prohibited; 554 555 /* WMM-AC TSPEC support */ 556 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 557 /* Use a separate work struct so that we can do something here 558 * while the sdata->work is flushing the queues, for example. 559 * otherwise, in scenarios where we hardly get any traffic out 560 * on the BE queue, but there's a lot of VO traffic, we might 561 * get stuck in a downgraded situation and flush takes forever. 562 */ 563 struct delayed_work tx_tspec_wk; 564 565 /* Information elements from the last transmitted (Re)Association 566 * Request frame. 567 */ 568 u8 *assoc_req_ies; 569 size_t assoc_req_ies_len; 570 }; 571 572 struct ieee80211_if_ibss { 573 struct timer_list timer; 574 struct work_struct csa_connection_drop_work; 575 576 unsigned long last_scan_completed; 577 578 u32 basic_rates; 579 580 bool fixed_bssid; 581 bool fixed_channel; 582 bool privacy; 583 584 bool control_port; 585 bool userspace_handles_dfs; 586 587 u8 bssid[ETH_ALEN] __aligned(2); 588 u8 ssid[IEEE80211_MAX_SSID_LEN]; 589 u8 ssid_len, ie_len; 590 u8 *ie; 591 struct cfg80211_chan_def chandef; 592 593 unsigned long ibss_join_req; 594 /* probe response/beacon for IBSS */ 595 struct beacon_data __rcu *presp; 596 597 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 598 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 599 600 spinlock_t incomplete_lock; 601 struct list_head incomplete_stations; 602 603 enum { 604 IEEE80211_IBSS_MLME_SEARCH, 605 IEEE80211_IBSS_MLME_JOINED, 606 } state; 607 }; 608 609 /** 610 * struct ieee80211_if_ocb - OCB mode state 611 * 612 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 613 * @wrkq_flags: OCB deferred task action 614 * @incomplete_lock: delayed STA insertion lock 615 * @incomplete_stations: list of STAs waiting for delayed insertion 616 * @joined: indication if the interface is connected to an OCB network 617 */ 618 struct ieee80211_if_ocb { 619 struct timer_list housekeeping_timer; 620 unsigned long wrkq_flags; 621 622 spinlock_t incomplete_lock; 623 struct list_head incomplete_stations; 624 625 bool joined; 626 }; 627 628 /** 629 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 630 * 631 * these declarations define the interface, which enables 632 * vendor-specific mesh synchronization 633 * 634 */ 635 struct ieee802_11_elems; 636 struct ieee80211_mesh_sync_ops { 637 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 638 struct ieee80211_mgmt *mgmt, unsigned int len, 639 const struct ieee80211_meshconf_ie *mesh_cfg, 640 struct ieee80211_rx_status *rx_status); 641 642 /* should be called with beacon_data under RCU read lock */ 643 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 644 struct beacon_data *beacon); 645 /* add other framework functions here */ 646 }; 647 648 struct mesh_csa_settings { 649 struct rcu_head rcu_head; 650 struct cfg80211_csa_settings settings; 651 }; 652 653 /** 654 * struct mesh_table 655 * 656 * @known_gates: list of known mesh gates and their mpaths by the station. The 657 * gate's mpath may or may not be resolved and active. 658 * @gates_lock: protects updates to known_gates 659 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 660 * @walk_head: linked list containing all mesh_path objects 661 * @walk_lock: lock protecting walk_head 662 * @entries: number of entries in the table 663 */ 664 struct mesh_table { 665 struct hlist_head known_gates; 666 spinlock_t gates_lock; 667 struct rhashtable rhead; 668 struct hlist_head walk_head; 669 spinlock_t walk_lock; 670 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 671 }; 672 673 struct ieee80211_if_mesh { 674 struct timer_list housekeeping_timer; 675 struct timer_list mesh_path_timer; 676 struct timer_list mesh_path_root_timer; 677 678 unsigned long wrkq_flags; 679 unsigned long mbss_changed; 680 681 bool userspace_handles_dfs; 682 683 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 684 size_t mesh_id_len; 685 /* Active Path Selection Protocol Identifier */ 686 u8 mesh_pp_id; 687 /* Active Path Selection Metric Identifier */ 688 u8 mesh_pm_id; 689 /* Congestion Control Mode Identifier */ 690 u8 mesh_cc_id; 691 /* Synchronization Protocol Identifier */ 692 u8 mesh_sp_id; 693 /* Authentication Protocol Identifier */ 694 u8 mesh_auth_id; 695 /* Local mesh Sequence Number */ 696 u32 sn; 697 /* Last used PREQ ID */ 698 u32 preq_id; 699 atomic_t mpaths; 700 /* Timestamp of last SN update */ 701 unsigned long last_sn_update; 702 /* Time when it's ok to send next PERR */ 703 unsigned long next_perr; 704 /* Timestamp of last PREQ sent */ 705 unsigned long last_preq; 706 struct mesh_rmc *rmc; 707 spinlock_t mesh_preq_queue_lock; 708 struct mesh_preq_queue preq_queue; 709 int preq_queue_len; 710 struct mesh_stats mshstats; 711 struct mesh_config mshcfg; 712 atomic_t estab_plinks; 713 u32 mesh_seqnum; 714 bool accepting_plinks; 715 int num_gates; 716 struct beacon_data __rcu *beacon; 717 const u8 *ie; 718 u8 ie_len; 719 enum { 720 IEEE80211_MESH_SEC_NONE = 0x0, 721 IEEE80211_MESH_SEC_AUTHED = 0x1, 722 IEEE80211_MESH_SEC_SECURED = 0x2, 723 } security; 724 bool user_mpm; 725 /* Extensible Synchronization Framework */ 726 const struct ieee80211_mesh_sync_ops *sync_ops; 727 s64 sync_offset_clockdrift_max; 728 spinlock_t sync_offset_lock; 729 /* mesh power save */ 730 enum nl80211_mesh_power_mode nonpeer_pm; 731 int ps_peers_light_sleep; 732 int ps_peers_deep_sleep; 733 struct ps_data ps; 734 /* Channel Switching Support */ 735 struct mesh_csa_settings __rcu *csa; 736 enum { 737 IEEE80211_MESH_CSA_ROLE_NONE, 738 IEEE80211_MESH_CSA_ROLE_INIT, 739 IEEE80211_MESH_CSA_ROLE_REPEATER, 740 } csa_role; 741 u8 chsw_ttl; 742 u16 pre_value; 743 744 /* offset from skb->data while building IE */ 745 int meshconf_offset; 746 747 struct mesh_table mesh_paths; 748 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 749 int mesh_paths_generation; 750 int mpp_paths_generation; 751 }; 752 753 #ifdef CONFIG_MAC80211_MESH 754 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 755 do { (msh)->mshstats.name++; } while (0) 756 #else 757 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 758 do { } while (0) 759 #endif 760 761 /** 762 * enum ieee80211_sub_if_data_flags - virtual interface flags 763 * 764 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 765 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 766 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 767 * associated stations and deliver multicast frames both 768 * back to wireless media and to the local net stack. 769 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 770 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 771 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 772 * recovery 773 */ 774 enum ieee80211_sub_if_data_flags { 775 IEEE80211_SDATA_ALLMULTI = BIT(0), 776 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 777 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 778 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 779 IEEE80211_SDATA_IN_DRIVER = BIT(5), 780 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 781 }; 782 783 /** 784 * enum ieee80211_sdata_state_bits - virtual interface state bits 785 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 786 * mirrors netif_running() but is separate for interface type 787 * change handling while the interface is up 788 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 789 * mode, so queues are stopped 790 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 791 * to offchannel, reset when offchannel returns 792 */ 793 enum ieee80211_sdata_state_bits { 794 SDATA_STATE_RUNNING, 795 SDATA_STATE_OFFCHANNEL, 796 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 797 }; 798 799 /** 800 * enum ieee80211_chanctx_mode - channel context configuration mode 801 * 802 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 803 * multiple interfaces 804 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 805 * only by a single interface. This can be used for example for 806 * non-fixed channel IBSS. 807 */ 808 enum ieee80211_chanctx_mode { 809 IEEE80211_CHANCTX_SHARED, 810 IEEE80211_CHANCTX_EXCLUSIVE 811 }; 812 813 /** 814 * enum ieee80211_chanctx_replace_state - channel context replacement state 815 * 816 * This is used for channel context in-place reservations that require channel 817 * context switch/swap. 818 * 819 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 820 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 821 * by a (not yet registered) channel context pointed by %replace_ctx. 822 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 823 * replaces an existing channel context pointed to by %replace_ctx. 824 */ 825 enum ieee80211_chanctx_replace_state { 826 IEEE80211_CHANCTX_REPLACE_NONE, 827 IEEE80211_CHANCTX_WILL_BE_REPLACED, 828 IEEE80211_CHANCTX_REPLACES_OTHER, 829 }; 830 831 struct ieee80211_chanctx { 832 struct list_head list; 833 struct rcu_head rcu_head; 834 835 struct list_head assigned_vifs; 836 struct list_head reserved_vifs; 837 838 enum ieee80211_chanctx_replace_state replace_state; 839 struct ieee80211_chanctx *replace_ctx; 840 841 enum ieee80211_chanctx_mode mode; 842 bool driver_present; 843 844 struct ieee80211_chanctx_conf conf; 845 }; 846 847 struct mac80211_qos_map { 848 struct cfg80211_qos_map qos_map; 849 struct rcu_head rcu_head; 850 }; 851 852 enum txq_info_flags { 853 IEEE80211_TXQ_STOP, 854 IEEE80211_TXQ_AMPDU, 855 IEEE80211_TXQ_NO_AMSDU, 856 IEEE80211_TXQ_STOP_NETIF_TX, 857 }; 858 859 /** 860 * struct txq_info - per tid queue 861 * 862 * @tin: contains packets split into multiple flows 863 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 864 * a fq_flow which is already owned by a different tin 865 * @def_cvars: codel vars for @def_flow 866 * @schedule_order: used with ieee80211_local->active_txqs 867 * @frags: used to keep fragments created after dequeue 868 */ 869 struct txq_info { 870 struct fq_tin tin; 871 struct codel_vars def_cvars; 872 struct codel_stats cstats; 873 struct rb_node schedule_order; 874 875 struct sk_buff_head frags; 876 unsigned long flags; 877 878 /* keep last! */ 879 struct ieee80211_txq txq; 880 }; 881 882 struct ieee80211_if_mntr { 883 u32 flags; 884 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 885 886 struct list_head list; 887 }; 888 889 /** 890 * struct ieee80211_if_nan - NAN state 891 * 892 * @conf: current NAN configuration 893 * @func_ids: a bitmap of available instance_id's 894 */ 895 struct ieee80211_if_nan { 896 struct cfg80211_nan_conf conf; 897 898 /* protects function_inst_ids */ 899 spinlock_t func_lock; 900 struct idr function_inst_ids; 901 }; 902 903 struct ieee80211_sub_if_data { 904 struct list_head list; 905 906 struct wireless_dev wdev; 907 908 /* keys */ 909 struct list_head key_list; 910 911 /* count for keys needing tailroom space allocation */ 912 int crypto_tx_tailroom_needed_cnt; 913 int crypto_tx_tailroom_pending_dec; 914 struct delayed_work dec_tailroom_needed_wk; 915 916 struct net_device *dev; 917 struct ieee80211_local *local; 918 919 unsigned int flags; 920 921 unsigned long state; 922 923 char name[IFNAMSIZ]; 924 925 struct ieee80211_fragment_cache frags; 926 927 /* TID bitmap for NoAck policy */ 928 u16 noack_map; 929 930 /* bit field of ACM bits (BIT(802.1D tag)) */ 931 u8 wmm_acm; 932 933 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + 934 NUM_DEFAULT_MGMT_KEYS + 935 NUM_DEFAULT_BEACON_KEYS]; 936 struct ieee80211_key __rcu *default_unicast_key; 937 struct ieee80211_key __rcu *default_multicast_key; 938 struct ieee80211_key __rcu *default_mgmt_key; 939 struct ieee80211_key __rcu *default_beacon_key; 940 941 u16 sequence_number; 942 __be16 control_port_protocol; 943 bool control_port_no_encrypt; 944 bool control_port_no_preauth; 945 bool control_port_over_nl80211; 946 int encrypt_headroom; 947 948 atomic_t num_tx_queued; 949 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 950 struct mac80211_qos_map __rcu *qos_map; 951 952 struct airtime_info airtime[IEEE80211_NUM_ACS]; 953 954 struct work_struct csa_finalize_work; 955 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 956 struct cfg80211_chan_def csa_chandef; 957 958 struct work_struct color_change_finalize_work; 959 960 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 961 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 962 963 /* context reservation -- protected with chanctx_mtx */ 964 struct ieee80211_chanctx *reserved_chanctx; 965 struct cfg80211_chan_def reserved_chandef; 966 bool reserved_radar_required; 967 bool reserved_ready; 968 969 /* used to reconfigure hardware SM PS */ 970 struct work_struct recalc_smps; 971 972 struct work_struct work; 973 struct sk_buff_head skb_queue; 974 struct sk_buff_head status_queue; 975 976 u8 needed_rx_chains; 977 enum ieee80211_smps_mode smps_mode; 978 979 int user_power_level; /* in dBm */ 980 int ap_power_level; /* in dBm */ 981 982 bool radar_required; 983 struct delayed_work dfs_cac_timer_work; 984 985 /* 986 * AP this belongs to: self in AP mode and 987 * corresponding AP in VLAN mode, NULL for 988 * all others (might be needed later in IBSS) 989 */ 990 struct ieee80211_if_ap *bss; 991 992 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 993 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 994 995 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 996 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 997 998 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 999 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1000 1001 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1002 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1003 bool beacon_rate_set; 1004 1005 union { 1006 struct ieee80211_if_ap ap; 1007 struct ieee80211_if_vlan vlan; 1008 struct ieee80211_if_managed mgd; 1009 struct ieee80211_if_ibss ibss; 1010 struct ieee80211_if_mesh mesh; 1011 struct ieee80211_if_ocb ocb; 1012 struct ieee80211_if_mntr mntr; 1013 struct ieee80211_if_nan nan; 1014 } u; 1015 1016 #ifdef CONFIG_MAC80211_DEBUGFS 1017 struct { 1018 struct dentry *subdir_stations; 1019 struct dentry *default_unicast_key; 1020 struct dentry *default_multicast_key; 1021 struct dentry *default_mgmt_key; 1022 struct dentry *default_beacon_key; 1023 } debugfs; 1024 #endif 1025 1026 /* must be last, dynamically sized area in this! */ 1027 struct ieee80211_vif vif; 1028 }; 1029 1030 static inline 1031 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1032 { 1033 return container_of(p, struct ieee80211_sub_if_data, vif); 1034 } 1035 1036 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1037 __acquires(&sdata->wdev.mtx) 1038 { 1039 mutex_lock(&sdata->wdev.mtx); 1040 __acquire(&sdata->wdev.mtx); 1041 } 1042 1043 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1044 __releases(&sdata->wdev.mtx) 1045 { 1046 mutex_unlock(&sdata->wdev.mtx); 1047 __release(&sdata->wdev.mtx); 1048 } 1049 1050 #define sdata_dereference(p, sdata) \ 1051 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1052 1053 static inline void 1054 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1055 { 1056 lockdep_assert_held(&sdata->wdev.mtx); 1057 } 1058 1059 static inline int 1060 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1061 { 1062 switch (chandef->width) { 1063 case NL80211_CHAN_WIDTH_5: 1064 return 2; 1065 case NL80211_CHAN_WIDTH_10: 1066 return 1; 1067 default: 1068 return 0; 1069 } 1070 } 1071 1072 static inline int 1073 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1074 { 1075 struct ieee80211_chanctx_conf *chanctx_conf; 1076 int shift = 0; 1077 1078 rcu_read_lock(); 1079 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1080 if (chanctx_conf) 1081 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1082 rcu_read_unlock(); 1083 1084 return shift; 1085 } 1086 1087 static inline int 1088 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems) 1089 { 1090 int i, len = 0; 1091 1092 if (!elems) 1093 return 0; 1094 1095 for (i = 0; i < elems->cnt; i++) 1096 len += elems->elem[i].len; 1097 1098 return len; 1099 } 1100 1101 enum { 1102 IEEE80211_RX_MSG = 1, 1103 IEEE80211_TX_STATUS_MSG = 2, 1104 }; 1105 1106 enum queue_stop_reason { 1107 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1108 IEEE80211_QUEUE_STOP_REASON_PS, 1109 IEEE80211_QUEUE_STOP_REASON_CSA, 1110 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1111 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1112 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1113 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1114 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1115 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1116 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1117 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1118 1119 IEEE80211_QUEUE_STOP_REASONS, 1120 }; 1121 1122 #ifdef CONFIG_MAC80211_LEDS 1123 struct tpt_led_trigger { 1124 char name[32]; 1125 const struct ieee80211_tpt_blink *blink_table; 1126 unsigned int blink_table_len; 1127 struct timer_list timer; 1128 struct ieee80211_local *local; 1129 unsigned long prev_traffic; 1130 unsigned long tx_bytes, rx_bytes; 1131 unsigned int active, want; 1132 bool running; 1133 }; 1134 #endif 1135 1136 /** 1137 * mac80211 scan flags - currently active scan mode 1138 * 1139 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1140 * well be on the operating channel 1141 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1142 * determine if we are on the operating channel or not 1143 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1144 * channel. This should not interrupt normal traffic. 1145 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1146 * that the scan completed. 1147 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1148 * a scan complete for an aborted scan. 1149 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1150 * cancelled. 1151 */ 1152 enum { 1153 SCAN_SW_SCANNING, 1154 SCAN_HW_SCANNING, 1155 SCAN_ONCHANNEL_SCANNING, 1156 SCAN_COMPLETED, 1157 SCAN_ABORTED, 1158 SCAN_HW_CANCELLED, 1159 }; 1160 1161 /** 1162 * enum mac80211_scan_state - scan state machine states 1163 * 1164 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1165 * determines if we should keep on scanning or switch back to the 1166 * operating channel 1167 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1168 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1169 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1170 * send out data 1171 * @SCAN_RESUME: Resume the scan and scan the next channel 1172 * @SCAN_ABORT: Abort the scan and go back to operating channel 1173 */ 1174 enum mac80211_scan_state { 1175 SCAN_DECISION, 1176 SCAN_SET_CHANNEL, 1177 SCAN_SEND_PROBE, 1178 SCAN_SUSPEND, 1179 SCAN_RESUME, 1180 SCAN_ABORT, 1181 }; 1182 1183 /** 1184 * struct airtime_sched_info - state used for airtime scheduling and AQL 1185 * 1186 * @lock: spinlock that protects all the fields in this struct 1187 * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time 1188 * @schedule_pos: the current position maintained while a driver walks the tree 1189 * with ieee80211_next_txq() 1190 * @active_list: list of struct airtime_info structs that were active within 1191 * the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute 1192 * weight_sum 1193 * @last_weight_update: used for rate limiting walking active_list 1194 * @last_schedule_time: tracks the last time a transmission was scheduled; used 1195 * for catching up v_t if no stations are eligible for 1196 * transmission. 1197 * @v_t: global virtual time; queues with v_t < this are eligible for 1198 * transmission 1199 * @weight_sum: total sum of all active stations used for dividing airtime 1200 * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast 1201 * path - see comment above 1202 * IEEE80211_RECIPROCAL_DIVISOR_64) 1203 * @aql_txq_limit_low: AQL limit when total outstanding airtime 1204 * is < IEEE80211_AQL_THRESHOLD 1205 * @aql_txq_limit_high: AQL limit when total outstanding airtime 1206 * is > IEEE80211_AQL_THRESHOLD 1207 */ 1208 struct airtime_sched_info { 1209 spinlock_t lock; 1210 struct rb_root_cached active_txqs; 1211 struct rb_node *schedule_pos; 1212 struct list_head active_list; 1213 u64 last_weight_update; 1214 u64 last_schedule_activity; 1215 u64 v_t; 1216 u64 weight_sum; 1217 u64 weight_sum_reciprocal; 1218 u32 aql_txq_limit_low; 1219 u32 aql_txq_limit_high; 1220 }; 1221 DECLARE_STATIC_KEY_FALSE(aql_disable); 1222 1223 struct ieee80211_local { 1224 /* embed the driver visible part. 1225 * don't cast (use the static inlines below), but we keep 1226 * it first anyway so they become a no-op */ 1227 struct ieee80211_hw hw; 1228 1229 struct fq fq; 1230 struct codel_vars *cvars; 1231 struct codel_params cparams; 1232 1233 /* protects active_txqs and txqi->schedule_order */ 1234 struct airtime_sched_info airtime[IEEE80211_NUM_ACS]; 1235 u16 airtime_flags; 1236 u32 aql_threshold; 1237 atomic_t aql_total_pending_airtime; 1238 1239 const struct ieee80211_ops *ops; 1240 1241 /* 1242 * private workqueue to mac80211. mac80211 makes this accessible 1243 * via ieee80211_queue_work() 1244 */ 1245 struct workqueue_struct *workqueue; 1246 1247 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1248 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1249 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1250 spinlock_t queue_stop_reason_lock; 1251 1252 int open_count; 1253 int monitors, cooked_mntrs; 1254 /* number of interfaces with corresponding FIF_ flags */ 1255 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1256 fif_probe_req; 1257 bool probe_req_reg; 1258 bool rx_mcast_action_reg; 1259 unsigned int filter_flags; /* FIF_* */ 1260 1261 bool wiphy_ciphers_allocated; 1262 1263 bool use_chanctx; 1264 1265 /* protects the aggregated multicast list and filter calls */ 1266 spinlock_t filter_lock; 1267 1268 /* used for uploading changed mc list */ 1269 struct work_struct reconfig_filter; 1270 1271 /* aggregated multicast list */ 1272 struct netdev_hw_addr_list mc_list; 1273 1274 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1275 1276 /* 1277 * suspended is true if we finished all the suspend _and_ we have 1278 * not yet come up from resume. This is to be used by mac80211 1279 * to ensure driver sanity during suspend and mac80211's own 1280 * sanity. It can eventually be used for WoW as well. 1281 */ 1282 bool suspended; 1283 1284 /* suspending is true during the whole suspend process */ 1285 bool suspending; 1286 1287 /* 1288 * Resuming is true while suspended, but when we're reprogramming the 1289 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1290 * again even though some other parts of the stack are still suspended 1291 * and we still drop received frames to avoid waking the stack. 1292 */ 1293 bool resuming; 1294 1295 /* 1296 * quiescing is true during the suspend process _only_ to 1297 * ease timer cancelling etc. 1298 */ 1299 bool quiescing; 1300 1301 /* device is started */ 1302 bool started; 1303 1304 /* device is during a HW reconfig */ 1305 bool in_reconfig; 1306 1307 /* wowlan is enabled -- don't reconfig on resume */ 1308 bool wowlan; 1309 1310 struct work_struct radar_detected_work; 1311 1312 /* number of RX chains the hardware has */ 1313 u8 rx_chains; 1314 1315 /* bitmap of which sbands were copied */ 1316 u8 sband_allocated; 1317 1318 int tx_headroom; /* required headroom for hardware/radiotap */ 1319 1320 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1321 * added to skb_queue will be processed, but frames in 1322 * skb_queue_unreliable may be dropped if the total length of these 1323 * queues increases over the limit. */ 1324 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1325 struct tasklet_struct tasklet; 1326 struct sk_buff_head skb_queue; 1327 struct sk_buff_head skb_queue_unreliable; 1328 1329 spinlock_t rx_path_lock; 1330 1331 /* Station data */ 1332 /* 1333 * The mutex only protects the list, hash table and 1334 * counter, reads are done with RCU. 1335 */ 1336 struct mutex sta_mtx; 1337 spinlock_t tim_lock; 1338 unsigned long num_sta; 1339 struct list_head sta_list; 1340 struct rhltable sta_hash; 1341 struct timer_list sta_cleanup; 1342 int sta_generation; 1343 1344 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1345 struct tasklet_struct tx_pending_tasklet; 1346 struct tasklet_struct wake_txqs_tasklet; 1347 1348 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1349 1350 /* number of interfaces with allmulti RX */ 1351 atomic_t iff_allmultis; 1352 1353 struct rate_control_ref *rate_ctrl; 1354 1355 struct arc4_ctx wep_tx_ctx; 1356 struct arc4_ctx wep_rx_ctx; 1357 u32 wep_iv; 1358 1359 /* see iface.c */ 1360 struct list_head interfaces; 1361 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1362 struct mutex iflist_mtx; 1363 1364 /* 1365 * Key mutex, protects sdata's key_list and sta_info's 1366 * key pointers and ptk_idx (write access, they're RCU.) 1367 */ 1368 struct mutex key_mtx; 1369 1370 /* mutex for scan and work locking */ 1371 struct mutex mtx; 1372 1373 /* Scanning and BSS list */ 1374 unsigned long scanning; 1375 struct cfg80211_ssid scan_ssid; 1376 struct cfg80211_scan_request *int_scan_req; 1377 struct cfg80211_scan_request __rcu *scan_req; 1378 struct ieee80211_scan_request *hw_scan_req; 1379 struct cfg80211_chan_def scan_chandef; 1380 enum nl80211_band hw_scan_band; 1381 int scan_channel_idx; 1382 int scan_ies_len; 1383 int hw_scan_ies_bufsize; 1384 struct cfg80211_scan_info scan_info; 1385 1386 struct work_struct sched_scan_stopped_work; 1387 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1388 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1389 u8 scan_addr[ETH_ALEN]; 1390 1391 unsigned long leave_oper_channel_time; 1392 enum mac80211_scan_state next_scan_state; 1393 struct delayed_work scan_work; 1394 struct ieee80211_sub_if_data __rcu *scan_sdata; 1395 /* For backward compatibility only -- do not use */ 1396 struct cfg80211_chan_def _oper_chandef; 1397 1398 /* Temporary remain-on-channel for off-channel operations */ 1399 struct ieee80211_channel *tmp_channel; 1400 1401 /* channel contexts */ 1402 struct list_head chanctx_list; 1403 struct mutex chanctx_mtx; 1404 1405 #ifdef CONFIG_MAC80211_LEDS 1406 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1407 struct led_trigger tpt_led; 1408 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1409 atomic_t radio_led_active, tpt_led_active; 1410 struct tpt_led_trigger *tpt_led_trigger; 1411 #endif 1412 1413 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1414 /* SNMP counters */ 1415 /* dot11CountersTable */ 1416 u32 dot11TransmittedFragmentCount; 1417 u32 dot11MulticastTransmittedFrameCount; 1418 u32 dot11FailedCount; 1419 u32 dot11RetryCount; 1420 u32 dot11MultipleRetryCount; 1421 u32 dot11FrameDuplicateCount; 1422 u32 dot11ReceivedFragmentCount; 1423 u32 dot11MulticastReceivedFrameCount; 1424 u32 dot11TransmittedFrameCount; 1425 1426 /* TX/RX handler statistics */ 1427 unsigned int tx_handlers_drop; 1428 unsigned int tx_handlers_queued; 1429 unsigned int tx_handlers_drop_wep; 1430 unsigned int tx_handlers_drop_not_assoc; 1431 unsigned int tx_handlers_drop_unauth_port; 1432 unsigned int rx_handlers_drop; 1433 unsigned int rx_handlers_queued; 1434 unsigned int rx_handlers_drop_nullfunc; 1435 unsigned int rx_handlers_drop_defrag; 1436 unsigned int tx_expand_skb_head; 1437 unsigned int tx_expand_skb_head_cloned; 1438 unsigned int rx_expand_skb_head_defrag; 1439 unsigned int rx_handlers_fragments; 1440 unsigned int tx_status_drop; 1441 #define I802_DEBUG_INC(c) (c)++ 1442 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1443 #define I802_DEBUG_INC(c) do { } while (0) 1444 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1445 1446 1447 int total_ps_buffered; /* total number of all buffered unicast and 1448 * multicast packets for power saving stations 1449 */ 1450 1451 bool pspolling; 1452 /* 1453 * PS can only be enabled when we have exactly one managed 1454 * interface (and monitors) in PS, this then points there. 1455 */ 1456 struct ieee80211_sub_if_data *ps_sdata; 1457 struct work_struct dynamic_ps_enable_work; 1458 struct work_struct dynamic_ps_disable_work; 1459 struct timer_list dynamic_ps_timer; 1460 struct notifier_block ifa_notifier; 1461 struct notifier_block ifa6_notifier; 1462 1463 /* 1464 * The dynamic ps timeout configured from user space via WEXT - 1465 * this will override whatever chosen by mac80211 internally. 1466 */ 1467 int dynamic_ps_forced_timeout; 1468 1469 int user_power_level; /* in dBm, for all interfaces */ 1470 1471 enum ieee80211_smps_mode smps_mode; 1472 1473 struct work_struct restart_work; 1474 1475 #ifdef CONFIG_MAC80211_DEBUGFS 1476 struct local_debugfsdentries { 1477 struct dentry *rcdir; 1478 struct dentry *keys; 1479 } debugfs; 1480 bool force_tx_status; 1481 #endif 1482 1483 /* 1484 * Remain-on-channel support 1485 */ 1486 struct delayed_work roc_work; 1487 struct list_head roc_list; 1488 struct work_struct hw_roc_start, hw_roc_done; 1489 unsigned long hw_roc_start_time; 1490 u64 roc_cookie_counter; 1491 1492 struct idr ack_status_frames; 1493 spinlock_t ack_status_lock; 1494 1495 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1496 1497 /* virtual monitor interface */ 1498 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1499 struct cfg80211_chan_def monitor_chandef; 1500 1501 /* extended capabilities provided by mac80211 */ 1502 u8 ext_capa[8]; 1503 }; 1504 1505 static inline struct ieee80211_sub_if_data * 1506 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1507 { 1508 return netdev_priv(dev); 1509 } 1510 1511 static inline struct ieee80211_sub_if_data * 1512 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1513 { 1514 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1515 } 1516 1517 static inline struct ieee80211_supported_band * 1518 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1519 { 1520 struct ieee80211_local *local = sdata->local; 1521 struct ieee80211_chanctx_conf *chanctx_conf; 1522 enum nl80211_band band; 1523 1524 rcu_read_lock(); 1525 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1526 1527 if (!chanctx_conf) { 1528 rcu_read_unlock(); 1529 return NULL; 1530 } 1531 1532 band = chanctx_conf->def.chan->band; 1533 rcu_read_unlock(); 1534 1535 return local->hw.wiphy->bands[band]; 1536 } 1537 1538 /* this struct holds the value parsing from channel switch IE */ 1539 struct ieee80211_csa_ie { 1540 struct cfg80211_chan_def chandef; 1541 u8 mode; 1542 u8 count; 1543 u8 ttl; 1544 u16 pre_value; 1545 u16 reason_code; 1546 u32 max_switch_time; 1547 }; 1548 1549 /* Parsed Information Elements */ 1550 struct ieee802_11_elems { 1551 const u8 *ie_start; 1552 size_t total_len; 1553 u32 crc; 1554 1555 /* pointers to IEs */ 1556 const struct ieee80211_tdls_lnkie *lnk_id; 1557 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1558 const u8 *ext_capab; 1559 const u8 *ssid; 1560 const u8 *supp_rates; 1561 const u8 *ds_params; 1562 const struct ieee80211_tim_ie *tim; 1563 const u8 *rsn; 1564 const u8 *rsnx; 1565 const u8 *erp_info; 1566 const u8 *ext_supp_rates; 1567 const u8 *wmm_info; 1568 const u8 *wmm_param; 1569 const struct ieee80211_ht_cap *ht_cap_elem; 1570 const struct ieee80211_ht_operation *ht_operation; 1571 const struct ieee80211_vht_cap *vht_cap_elem; 1572 const struct ieee80211_vht_operation *vht_operation; 1573 const struct ieee80211_meshconf_ie *mesh_config; 1574 const u8 *he_cap; 1575 const struct ieee80211_he_operation *he_operation; 1576 const struct ieee80211_he_spr *he_spr; 1577 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1578 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1579 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1580 const u8 *uora_element; 1581 const u8 *mesh_id; 1582 const u8 *peering; 1583 const __le16 *awake_window; 1584 const u8 *preq; 1585 const u8 *prep; 1586 const u8 *perr; 1587 const struct ieee80211_rann_ie *rann; 1588 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1589 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1590 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1591 const u8 *max_channel_switch_time; 1592 const u8 *country_elem; 1593 const u8 *pwr_constr_elem; 1594 const u8 *cisco_dtpc_elem; 1595 const struct ieee80211_timeout_interval_ie *timeout_int; 1596 const u8 *opmode_notif; 1597 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1598 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1599 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1600 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1601 const struct ieee80211_bssid_index *bssid_index; 1602 u8 max_bssid_indicator; 1603 u8 dtim_count; 1604 u8 dtim_period; 1605 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1606 const struct ieee80211_s1g_cap *s1g_capab; 1607 const struct ieee80211_s1g_oper_ie *s1g_oper; 1608 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1609 const struct ieee80211_aid_response_ie *aid_resp; 1610 const struct ieee80211_eht_cap_elem *eht_cap; 1611 const struct ieee80211_eht_operation *eht_operation; 1612 1613 /* length of them, respectively */ 1614 u8 ext_capab_len; 1615 u8 ssid_len; 1616 u8 supp_rates_len; 1617 u8 tim_len; 1618 u8 rsn_len; 1619 u8 rsnx_len; 1620 u8 ext_supp_rates_len; 1621 u8 wmm_info_len; 1622 u8 wmm_param_len; 1623 u8 he_cap_len; 1624 u8 mesh_id_len; 1625 u8 peering_len; 1626 u8 preq_len; 1627 u8 prep_len; 1628 u8 perr_len; 1629 u8 country_elem_len; 1630 u8 bssid_index_len; 1631 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1632 u8 tx_pwr_env_num; 1633 u8 eht_cap_len; 1634 1635 /* whether a parse error occurred while retrieving these elements */ 1636 bool parse_error; 1637 }; 1638 1639 static inline struct ieee80211_local *hw_to_local( 1640 struct ieee80211_hw *hw) 1641 { 1642 return container_of(hw, struct ieee80211_local, hw); 1643 } 1644 1645 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1646 { 1647 return container_of(txq, struct txq_info, txq); 1648 } 1649 1650 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1651 { 1652 struct txq_info *txqi = to_txq_info(txq); 1653 1654 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1655 } 1656 1657 static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq) 1658 { 1659 struct ieee80211_sub_if_data *sdata; 1660 struct sta_info *sta; 1661 1662 if (txq->sta) { 1663 sta = container_of(txq->sta, struct sta_info, sta); 1664 return &sta->airtime[txq->ac]; 1665 } 1666 1667 sdata = vif_to_sdata(txq->vif); 1668 return &sdata->airtime[txq->ac]; 1669 } 1670 1671 /* To avoid divisions in the fast path, we keep pre-computed reciprocals for 1672 * airtime weight calculations. There are two different weights to keep track 1673 * of: The per-station weight and the sum of weights per phy. 1674 * 1675 * For the per-station weights (kept in airtime_info below), we use 32-bit 1676 * reciprocals with a devisor of 2^19. This lets us keep the multiplications and 1677 * divisions for the station weights as 32-bit operations at the cost of a bit 1678 * of rounding error for high weights; but the choice of divisor keeps rounding 1679 * errors <10% for weights <2^15, assuming no more than 8ms of airtime is 1680 * reported at a time. 1681 * 1682 * For the per-phy sum of weights the values can get higher, so we use 64-bit 1683 * operations for those with a 32-bit divisor, which should avoid any 1684 * significant rounding errors. 1685 */ 1686 #define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL 1687 #define IEEE80211_RECIPROCAL_SHIFT_64 32 1688 #define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U 1689 #define IEEE80211_RECIPROCAL_SHIFT_32 19 1690 1691 static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight) 1692 { 1693 if (air_info->weight == weight) 1694 return; 1695 1696 air_info->weight = weight; 1697 if (weight) { 1698 air_info->weight_reciprocal = 1699 IEEE80211_RECIPROCAL_DIVISOR_32 / weight; 1700 } else { 1701 air_info->weight_reciprocal = 0; 1702 } 1703 } 1704 1705 static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched, 1706 int weight_sum) 1707 { 1708 if (air_sched->weight_sum == weight_sum) 1709 return; 1710 1711 air_sched->weight_sum = weight_sum; 1712 if (air_sched->weight_sum) { 1713 air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64; 1714 do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum); 1715 } else { 1716 air_sched->weight_sum_reciprocal = 0; 1717 } 1718 } 1719 1720 /* A problem when trying to enforce airtime fairness is that we want to divide 1721 * the airtime between the currently *active* stations. However, basing this on 1722 * the instantaneous queue state of stations doesn't work, as queues tend to 1723 * oscillate very quickly between empty and occupied, leading to the scheduler 1724 * thinking only a single station is active when deciding whether to allow 1725 * transmission (and thus not throttling correctly). 1726 * 1727 * To fix this we use a timer-based notion of activity: a station is considered 1728 * active if it has been scheduled within the last 100 ms; we keep a separate 1729 * list of all the stations considered active in this manner, and lazily update 1730 * the total weight of active stations from this list (filtering the stations in 1731 * the list by their 'last active' time). 1732 * 1733 * We add one additional safeguard to guard against stations that manage to get 1734 * scheduled every 100 ms but don't transmit a lot of data, and thus don't use 1735 * up any airtime. Such stations would be able to get priority for an extended 1736 * period of time if they do start transmitting at full capacity again, and so 1737 * we add an explicit maximum for how far behind a station is allowed to fall in 1738 * the virtual airtime domain. This limit is set to a relatively high value of 1739 * 20 ms because the main mechanism for catching up idle stations is the active 1740 * state as described above; i.e., the hard limit should only be hit in 1741 * pathological cases. 1742 */ 1743 #define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC) 1744 #define AIRTIME_MAX_BEHIND 20000 /* 20 ms */ 1745 1746 static inline bool airtime_is_active(struct airtime_info *air_info, u64 now) 1747 { 1748 return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION; 1749 } 1750 1751 static inline void airtime_set_active(struct airtime_sched_info *air_sched, 1752 struct airtime_info *air_info, u64 now) 1753 { 1754 air_info->last_scheduled = now; 1755 air_sched->last_schedule_activity = now; 1756 list_move_tail(&air_info->list, &air_sched->active_list); 1757 } 1758 1759 static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched, 1760 u64 v_t, u64 now) 1761 { 1762 air_sched->v_t = v_t; 1763 return true; 1764 } 1765 1766 static inline void init_airtime_info(struct airtime_info *air_info, 1767 struct airtime_sched_info *air_sched) 1768 { 1769 atomic_set(&air_info->aql_tx_pending, 0); 1770 air_info->aql_limit_low = air_sched->aql_txq_limit_low; 1771 air_info->aql_limit_high = air_sched->aql_txq_limit_high; 1772 airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT); 1773 INIT_LIST_HEAD(&air_info->list); 1774 } 1775 1776 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1777 { 1778 return ether_addr_equal(raddr, addr) || 1779 is_broadcast_ether_addr(raddr); 1780 } 1781 1782 static inline bool 1783 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1784 { 1785 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1786 status->flag & RX_FLAG_MACTIME_END); 1787 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1788 RX_FLAG_MACTIME_PLCP_START)); 1789 } 1790 1791 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1792 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1793 1794 /* This function returns the number of multicast stations connected to this 1795 * interface. It returns -1 if that number is not tracked, that is for netdevs 1796 * not in AP or AP_VLAN mode or when using 4addr. 1797 */ 1798 static inline int 1799 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1800 { 1801 if (sdata->vif.type == NL80211_IFTYPE_AP) 1802 return atomic_read(&sdata->u.ap.num_mcast_sta); 1803 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1804 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1805 return -1; 1806 } 1807 1808 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1809 struct ieee80211_rx_status *status, 1810 unsigned int mpdu_len, 1811 unsigned int mpdu_offset); 1812 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1813 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1814 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1815 u32 changed); 1816 void ieee80211_configure_filter(struct ieee80211_local *local); 1817 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1818 1819 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1820 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1821 u64 *cookie, gfp_t gfp); 1822 1823 void ieee80211_check_fast_rx(struct sta_info *sta); 1824 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1825 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1826 void ieee80211_clear_fast_rx(struct sta_info *sta); 1827 1828 /* STA code */ 1829 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1830 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1831 struct cfg80211_auth_request *req); 1832 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1833 struct cfg80211_assoc_request *req); 1834 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1835 struct cfg80211_deauth_request *req); 1836 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1837 struct cfg80211_disassoc_request *req); 1838 void ieee80211_send_pspoll(struct ieee80211_local *local, 1839 struct ieee80211_sub_if_data *sdata); 1840 void ieee80211_recalc_ps(struct ieee80211_local *local); 1841 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1842 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1843 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1844 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1845 struct sk_buff *skb); 1846 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1847 struct sk_buff *skb); 1848 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1849 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1850 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1851 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1852 __le16 fc, bool acked); 1853 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1854 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1855 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1856 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1857 u8 *bssid, u8 reason, bool tx); 1858 1859 /* IBSS code */ 1860 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1861 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1862 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1863 const u8 *bssid, const u8 *addr, u32 supp_rates); 1864 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1865 struct cfg80211_ibss_params *params); 1866 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1867 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1868 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1869 struct sk_buff *skb); 1870 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1871 struct cfg80211_csa_settings *csa_settings); 1872 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1873 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1874 1875 /* OCB code */ 1876 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1877 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1878 const u8 *bssid, const u8 *addr, u32 supp_rates); 1879 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1880 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1881 struct ocb_setup *setup); 1882 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1883 1884 /* mesh code */ 1885 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1886 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1887 struct sk_buff *skb); 1888 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1889 struct cfg80211_csa_settings *csa_settings); 1890 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1891 1892 /* scan/BSS handling */ 1893 void ieee80211_scan_work(struct work_struct *work); 1894 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1895 const u8 *ssid, u8 ssid_len, 1896 struct ieee80211_channel **channels, 1897 unsigned int n_channels, 1898 enum nl80211_bss_scan_width scan_width); 1899 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1900 struct cfg80211_scan_request *req); 1901 void ieee80211_scan_cancel(struct ieee80211_local *local); 1902 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1903 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1904 1905 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1906 struct ieee80211_bss * 1907 ieee80211_bss_info_update(struct ieee80211_local *local, 1908 struct ieee80211_rx_status *rx_status, 1909 struct ieee80211_mgmt *mgmt, 1910 size_t len, 1911 struct ieee80211_channel *channel); 1912 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1913 struct ieee80211_bss *bss); 1914 1915 /* scheduled scan handling */ 1916 int 1917 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1918 struct cfg80211_sched_scan_request *req); 1919 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1920 struct cfg80211_sched_scan_request *req); 1921 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1922 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1923 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1924 1925 /* off-channel/mgmt-tx */ 1926 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1927 void ieee80211_offchannel_return(struct ieee80211_local *local); 1928 void ieee80211_roc_setup(struct ieee80211_local *local); 1929 void ieee80211_start_next_roc(struct ieee80211_local *local); 1930 void ieee80211_roc_purge(struct ieee80211_local *local, 1931 struct ieee80211_sub_if_data *sdata); 1932 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1933 struct ieee80211_channel *chan, 1934 unsigned int duration, u64 *cookie); 1935 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1936 struct wireless_dev *wdev, u64 cookie); 1937 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1938 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1939 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1940 struct wireless_dev *wdev, u64 cookie); 1941 1942 /* channel switch handling */ 1943 void ieee80211_csa_finalize_work(struct work_struct *work); 1944 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1945 struct cfg80211_csa_settings *params); 1946 1947 /* color change handling */ 1948 void ieee80211_color_change_finalize_work(struct work_struct *work); 1949 1950 /* interface handling */ 1951 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1952 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1953 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1954 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1955 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1956 MAC80211_SUPPORTED_FEATURES_RX) 1957 1958 int ieee80211_iface_init(void); 1959 void ieee80211_iface_exit(void); 1960 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1961 unsigned char name_assign_type, 1962 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1963 struct vif_params *params); 1964 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1965 enum nl80211_iftype type); 1966 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1967 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1968 u32 ieee80211_idle_off(struct ieee80211_local *local); 1969 void ieee80211_recalc_idle(struct ieee80211_local *local); 1970 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1971 const int offset); 1972 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1973 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1974 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1975 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1976 1977 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1978 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1979 bool update_bss); 1980 void ieee80211_recalc_offload(struct ieee80211_local *local); 1981 1982 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1983 { 1984 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1985 } 1986 1987 /* tx handling */ 1988 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1989 void ieee80211_tx_pending(struct tasklet_struct *t); 1990 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1991 struct net_device *dev); 1992 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1993 struct net_device *dev); 1994 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1995 struct net_device *dev); 1996 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1997 struct net_device *dev, 1998 u32 info_flags, 1999 u32 ctrl_flags, 2000 u64 *cookie); 2001 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 2002 struct sk_buff_head *skbs); 2003 struct sk_buff * 2004 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2005 struct sk_buff *skb, u32 info_flags); 2006 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2007 struct ieee80211_supported_band *sband, 2008 int retry_count, int shift, bool send_to_cooked, 2009 struct ieee80211_tx_status *status); 2010 2011 void ieee80211_check_fast_xmit(struct sta_info *sta); 2012 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2013 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2014 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2015 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2016 const u8 *buf, size_t len, 2017 const u8 *dest, __be16 proto, bool unencrypted, 2018 u64 *cookie); 2019 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2020 const u8 *buf, size_t len); 2021 void ieee80211_resort_txq(struct ieee80211_hw *hw, 2022 struct ieee80211_txq *txq); 2023 void ieee80211_unschedule_txq(struct ieee80211_hw *hw, 2024 struct ieee80211_txq *txq, 2025 bool purge); 2026 void ieee80211_update_airtime_weight(struct ieee80211_local *local, 2027 struct airtime_sched_info *air_sched, 2028 u64 now, bool force); 2029 2030 /* HT */ 2031 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2032 struct ieee80211_sta_ht_cap *ht_cap); 2033 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2034 struct ieee80211_supported_band *sband, 2035 const struct ieee80211_ht_cap *ht_cap_ie, 2036 struct sta_info *sta); 2037 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2038 const u8 *da, u16 tid, 2039 u16 initiator, u16 reason_code); 2040 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2041 enum ieee80211_smps_mode smps, const u8 *da, 2042 const u8 *bssid); 2043 void ieee80211_request_smps_ap_work(struct work_struct *work); 2044 void ieee80211_request_smps_mgd_work(struct work_struct *work); 2045 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2046 enum ieee80211_smps_mode smps_mode_new); 2047 2048 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2049 u16 initiator, u16 reason, bool stop); 2050 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2051 u16 initiator, u16 reason, bool stop); 2052 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2053 u8 dialog_token, u16 timeout, 2054 u16 start_seq_num, u16 ba_policy, u16 tid, 2055 u16 buf_size, bool tx, bool auto_seq, 2056 const struct ieee80211_addba_ext_ie *addbaext); 2057 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2058 enum ieee80211_agg_stop_reason reason); 2059 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2060 struct sta_info *sta, 2061 struct ieee80211_mgmt *mgmt, size_t len); 2062 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2063 struct sta_info *sta, 2064 struct ieee80211_mgmt *mgmt, 2065 size_t len); 2066 void ieee80211_process_addba_request(struct ieee80211_local *local, 2067 struct sta_info *sta, 2068 struct ieee80211_mgmt *mgmt, 2069 size_t len); 2070 2071 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2072 enum ieee80211_agg_stop_reason reason); 2073 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2074 enum ieee80211_agg_stop_reason reason); 2075 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2076 struct tid_ampdu_tx *tid_tx); 2077 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2078 struct tid_ampdu_tx *tid_tx); 2079 void ieee80211_ba_session_work(struct work_struct *work); 2080 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2081 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2082 2083 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2084 enum nl80211_smps_mode 2085 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2086 2087 /* VHT */ 2088 void 2089 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2090 struct ieee80211_supported_band *sband, 2091 const struct ieee80211_vht_cap *vht_cap_ie, 2092 struct sta_info *sta); 2093 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 2094 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 2095 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 2096 enum ieee80211_sta_rx_bandwidth 2097 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2098 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 2099 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2100 struct ieee80211_mgmt *mgmt); 2101 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2102 struct sta_info *sta, u8 opmode, 2103 enum nl80211_band band); 2104 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2105 struct sta_info *sta, u8 opmode, 2106 enum nl80211_band band); 2107 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2108 struct ieee80211_sta_vht_cap *vht_cap); 2109 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2110 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2111 enum nl80211_chan_width 2112 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 2113 2114 /* HE */ 2115 void 2116 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2117 struct ieee80211_supported_band *sband, 2118 const u8 *he_cap_ie, u8 he_cap_len, 2119 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2120 struct sta_info *sta); 2121 void 2122 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2123 const struct ieee80211_he_spr *he_spr_ie_elem); 2124 2125 void 2126 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2127 const struct ieee80211_he_operation *he_op_ie_elem); 2128 2129 /* S1G */ 2130 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2131 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2132 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2133 struct sk_buff *skb); 2134 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2135 struct sk_buff *skb); 2136 2137 /* Spectrum management */ 2138 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2139 struct ieee80211_mgmt *mgmt, 2140 size_t len); 2141 /** 2142 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2143 * @sdata: the sdata of the interface which has received the frame 2144 * @elems: parsed 802.11 elements received with the frame 2145 * @current_band: indicates the current band 2146 * @vht_cap_info: VHT capabilities of the transmitter 2147 * @sta_flags: contains information about own capabilities and restrictions 2148 * to decide which channel switch announcements can be accepted. Only the 2149 * following subset of &enum ieee80211_sta_flags are evaluated: 2150 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 2151 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 2152 * %IEEE80211_STA_DISABLE_160MHZ. 2153 * @bssid: the currently connected bssid (for reporting) 2154 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2155 All of them will be filled with if success only. 2156 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2157 */ 2158 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2159 struct ieee802_11_elems *elems, 2160 enum nl80211_band current_band, 2161 u32 vht_cap_info, 2162 u32 sta_flags, u8 *bssid, 2163 struct ieee80211_csa_ie *csa_ie); 2164 2165 /* Suspend/resume and hw reconfiguration */ 2166 int ieee80211_reconfig(struct ieee80211_local *local); 2167 void ieee80211_stop_device(struct ieee80211_local *local); 2168 2169 int __ieee80211_suspend(struct ieee80211_hw *hw, 2170 struct cfg80211_wowlan *wowlan); 2171 2172 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2173 { 2174 struct ieee80211_local *local = hw_to_local(hw); 2175 2176 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2177 !test_bit(SCAN_COMPLETED, &local->scanning), 2178 "%s: resume with hardware scan still in progress\n", 2179 wiphy_name(hw->wiphy)); 2180 2181 return ieee80211_reconfig(hw_to_local(hw)); 2182 } 2183 2184 /* utility functions/constants */ 2185 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2186 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2187 int rate, int erp, int short_preamble, 2188 int shift); 2189 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2190 struct ieee80211_tx_queue_params *qparam, 2191 int ac); 2192 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 2193 bool bss_notify, bool enable_qos); 2194 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2195 struct sta_info *sta, struct sk_buff *skb); 2196 2197 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2198 struct sk_buff *skb, int tid, 2199 enum nl80211_band band); 2200 2201 /* sta_out needs to be checked for ERR_PTR() before using */ 2202 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2203 struct sk_buff *skb, 2204 struct sta_info **sta_out); 2205 2206 static inline void 2207 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2208 struct sk_buff *skb, int tid, 2209 enum nl80211_band band) 2210 { 2211 rcu_read_lock(); 2212 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 2213 rcu_read_unlock(); 2214 } 2215 2216 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2217 struct sk_buff *skb, int tid) 2218 { 2219 struct ieee80211_chanctx_conf *chanctx_conf; 2220 2221 rcu_read_lock(); 2222 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2223 if (WARN_ON(!chanctx_conf)) { 2224 rcu_read_unlock(); 2225 kfree_skb(skb); 2226 return; 2227 } 2228 2229 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 2230 chanctx_conf->def.chan->band); 2231 rcu_read_unlock(); 2232 } 2233 2234 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2235 struct sk_buff *skb) 2236 { 2237 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2238 ieee80211_tx_skb_tid(sdata, skb, 7); 2239 } 2240 2241 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len, 2242 bool action, 2243 u64 filter, u32 crc, 2244 const u8 *transmitter_bssid, 2245 const u8 *bss_bssid); 2246 static inline struct ieee802_11_elems * 2247 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2248 const u8 *transmitter_bssid, 2249 const u8 *bss_bssid) 2250 { 2251 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, 2252 transmitter_bssid, bss_bssid); 2253 } 2254 2255 2256 extern const int ieee802_1d_to_ac[8]; 2257 2258 static inline int ieee80211_ac_from_tid(int tid) 2259 { 2260 return ieee802_1d_to_ac[tid & 7]; 2261 } 2262 2263 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2264 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2265 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2266 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2267 struct ieee80211_sub_if_data *sdata, 2268 bool powersave); 2269 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2270 struct ieee80211_sub_if_data *sdata); 2271 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2272 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2273 2274 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2275 unsigned long queues, 2276 enum queue_stop_reason reason, 2277 bool refcounted); 2278 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2279 struct ieee80211_sub_if_data *sdata, 2280 enum queue_stop_reason reason); 2281 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2282 struct ieee80211_sub_if_data *sdata, 2283 enum queue_stop_reason reason); 2284 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2285 unsigned long queues, 2286 enum queue_stop_reason reason, 2287 bool refcounted); 2288 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2289 enum queue_stop_reason reason, 2290 bool refcounted); 2291 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2292 enum queue_stop_reason reason, 2293 bool refcounted); 2294 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2295 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2296 struct sk_buff *skb); 2297 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2298 struct sk_buff_head *skbs); 2299 void ieee80211_flush_queues(struct ieee80211_local *local, 2300 struct ieee80211_sub_if_data *sdata, bool drop); 2301 void __ieee80211_flush_queues(struct ieee80211_local *local, 2302 struct ieee80211_sub_if_data *sdata, 2303 unsigned int queues, bool drop); 2304 2305 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2306 { 2307 /* 2308 * It's unsafe to try to do any work during reconfigure flow. 2309 * When the flow ends the work will be requeued. 2310 */ 2311 if (local->in_reconfig) 2312 return false; 2313 2314 /* 2315 * If quiescing is set, we are racing with __ieee80211_suspend. 2316 * __ieee80211_suspend flushes the workers after setting quiescing, 2317 * and we check quiescing / suspended before enqueing new workers. 2318 * We should abort the worker to avoid the races below. 2319 */ 2320 if (local->quiescing) 2321 return false; 2322 2323 /* 2324 * We might already be suspended if the following scenario occurs: 2325 * __ieee80211_suspend Control path 2326 * 2327 * if (local->quiescing) 2328 * return; 2329 * local->quiescing = true; 2330 * flush_workqueue(); 2331 * queue_work(...); 2332 * local->suspended = true; 2333 * local->quiescing = false; 2334 * worker starts running... 2335 */ 2336 if (local->suspended) 2337 return false; 2338 2339 return true; 2340 } 2341 2342 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2343 void ieee80211_txq_set_params(struct ieee80211_local *local); 2344 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2345 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2346 struct sta_info *sta, 2347 struct txq_info *txq, int tid); 2348 void ieee80211_txq_purge(struct ieee80211_local *local, 2349 struct txq_info *txqi); 2350 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2351 struct ieee80211_sub_if_data *sdata); 2352 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2353 struct txq_info *txqi); 2354 void ieee80211_wake_txqs(struct tasklet_struct *t); 2355 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2356 u16 transaction, u16 auth_alg, u16 status, 2357 const u8 *extra, size_t extra_len, const u8 *bssid, 2358 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2359 u32 tx_flags); 2360 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2361 const u8 *da, const u8 *bssid, 2362 u16 stype, u16 reason, 2363 bool send_frame, u8 *frame_buf); 2364 2365 enum { 2366 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2367 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2368 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2369 }; 2370 2371 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2372 size_t buffer_len, 2373 struct ieee80211_scan_ies *ie_desc, 2374 const u8 *ie, size_t ie_len, 2375 u8 bands_used, u32 *rate_masks, 2376 struct cfg80211_chan_def *chandef, 2377 u32 flags); 2378 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2379 const u8 *src, const u8 *dst, 2380 u32 ratemask, 2381 struct ieee80211_channel *chan, 2382 const u8 *ssid, size_t ssid_len, 2383 const u8 *ie, size_t ie_len, 2384 u32 flags); 2385 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2386 struct ieee802_11_elems *elems, 2387 enum nl80211_band band, u32 *basic_rates); 2388 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2389 enum ieee80211_smps_mode smps_mode); 2390 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2391 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2392 2393 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2394 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2395 u16 cap); 2396 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2397 const struct cfg80211_chan_def *chandef, 2398 u16 prot_mode, bool rifs_mode); 2399 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2400 const struct cfg80211_chan_def *chandef); 2401 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2402 u32 cap); 2403 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2404 const struct cfg80211_chan_def *chandef); 2405 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2406 u8 *ieee80211_ie_build_he_cap(u32 disable_flags, u8 *pos, 2407 const struct ieee80211_sta_he_cap *he_cap, 2408 u8 *end); 2409 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2410 struct sk_buff *skb); 2411 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2412 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2413 const struct ieee80211_supported_band *sband, 2414 const u8 *srates, int srates_len, u32 *rates); 2415 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2416 struct sk_buff *skb, bool need_basic, 2417 enum nl80211_band band); 2418 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2419 struct sk_buff *skb, bool need_basic, 2420 enum nl80211_band band); 2421 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2422 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2423 struct ieee80211_sta_s1g_cap *caps, 2424 struct sk_buff *skb); 2425 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2426 struct sk_buff *skb); 2427 2428 /* channel management */ 2429 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2430 struct cfg80211_chan_def *chandef); 2431 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2432 const struct ieee80211_vht_operation *oper, 2433 const struct ieee80211_ht_operation *htop, 2434 struct cfg80211_chan_def *chandef); 2435 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2436 const struct ieee80211_he_operation *he_oper, 2437 const struct ieee80211_eht_operation *eht_oper, 2438 struct cfg80211_chan_def *chandef); 2439 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2440 struct cfg80211_chan_def *chandef); 2441 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2442 2443 int __must_check 2444 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2445 const struct cfg80211_chan_def *chandef, 2446 enum ieee80211_chanctx_mode mode); 2447 int __must_check 2448 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2449 const struct cfg80211_chan_def *chandef, 2450 enum ieee80211_chanctx_mode mode, 2451 bool radar_required); 2452 int __must_check 2453 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2454 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2455 2456 int __must_check 2457 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2458 const struct cfg80211_chan_def *chandef, 2459 u32 *changed); 2460 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2461 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2462 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2463 bool clear); 2464 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2465 struct ieee80211_chanctx *ctx); 2466 2467 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2468 struct ieee80211_chanctx *chanctx); 2469 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2470 struct ieee80211_chanctx *ctx); 2471 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2472 2473 void ieee80211_dfs_cac_timer(unsigned long data); 2474 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2475 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2476 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2477 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2478 struct cfg80211_csa_settings *csa_settings); 2479 2480 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2481 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2482 const struct ieee80211_cipher_scheme * 2483 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2484 enum nl80211_iftype iftype); 2485 int ieee80211_cs_headroom(struct ieee80211_local *local, 2486 struct cfg80211_crypto_settings *crypto, 2487 enum nl80211_iftype iftype); 2488 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2489 struct ieee80211_sub_if_data *sdata); 2490 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2491 const struct cfg80211_chan_def *chandef, 2492 enum ieee80211_chanctx_mode chanmode, 2493 u8 radar_detect); 2494 int ieee80211_max_num_channels(struct ieee80211_local *local); 2495 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2496 struct ieee80211_chanctx *ctx); 2497 2498 /* TDLS */ 2499 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2500 const u8 *peer, u8 action_code, u8 dialog_token, 2501 u16 status_code, u32 peer_capability, 2502 bool initiator, const u8 *extra_ies, 2503 size_t extra_ies_len); 2504 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2505 const u8 *peer, enum nl80211_tdls_operation oper); 2506 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2507 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2508 const u8 *addr, u8 oper_class, 2509 struct cfg80211_chan_def *chandef); 2510 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2511 struct net_device *dev, 2512 const u8 *addr); 2513 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2514 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2515 const u8 *peer, u16 reason); 2516 void 2517 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2518 struct sk_buff *skb); 2519 2520 2521 const char *ieee80211_get_reason_code_string(u16 reason_code); 2522 u16 ieee80211_encode_usf(int val); 2523 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2524 enum nl80211_iftype type); 2525 2526 extern const struct ethtool_ops ieee80211_ethtool_ops; 2527 2528 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2529 struct ieee80211_vif *vif, 2530 struct ieee80211_sta *pubsta, 2531 int len, bool ampdu); 2532 #ifdef CONFIG_MAC80211_NOINLINE 2533 #define debug_noinline noinline 2534 #else 2535 #define debug_noinline 2536 #endif 2537 2538 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2539 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2540 2541 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2542 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2543 const struct ieee80211_sta_he_cap *he_cap, 2544 const struct ieee80211_sta_eht_cap *eht_cap, 2545 u8 *end); 2546 2547 void 2548 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2549 struct ieee80211_supported_band *sband, 2550 const u8 *he_cap_ie, u8 he_cap_len, 2551 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2552 u8 eht_cap_len, struct sta_info *sta); 2553 #endif /* IEEE80211_I_H */ 2554