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