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 associated:1; 458 459 struct cfg80211_bss *assoc_bss; 460 struct ieee80211_mgd_auth_data *auth_data; 461 struct ieee80211_mgd_assoc_data *assoc_data; 462 463 u8 bssid[ETH_ALEN] __aligned(2); 464 465 bool powersave; /* powersave requested for this iface */ 466 bool broken_ap; /* AP is broken -- turn off powersave */ 467 bool have_beacon; 468 u8 dtim_period; 469 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 470 driver_smps_mode; /* smps mode request */ 471 472 struct work_struct request_smps_work; 473 474 unsigned int flags; 475 476 bool csa_waiting_bcn; 477 bool csa_ignored_same_chan; 478 479 bool beacon_crc_valid; 480 u32 beacon_crc; 481 482 bool status_acked; 483 bool status_received; 484 __le16 status_fc; 485 486 enum { 487 IEEE80211_MFP_DISABLED, 488 IEEE80211_MFP_OPTIONAL, 489 IEEE80211_MFP_REQUIRED 490 } mfp; /* management frame protection */ 491 492 /* 493 * Bitmask of enabled u-apsd queues, 494 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 495 * to take effect. 496 */ 497 unsigned int uapsd_queues; 498 499 /* 500 * Maximum number of buffered frames AP can deliver during a 501 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 502 * Needs a new association to take effect. 503 */ 504 unsigned int uapsd_max_sp_len; 505 506 int wmm_last_param_set; 507 int mu_edca_last_param_set; 508 509 u8 use_4addr; 510 511 s16 p2p_noa_index; 512 513 struct ewma_beacon_signal ave_beacon_signal; 514 515 /* 516 * Number of Beacon frames used in ave_beacon_signal. This can be used 517 * to avoid generating less reliable cqm events that would be based 518 * only on couple of received frames. 519 */ 520 unsigned int count_beacon_signal; 521 522 /* Number of times beacon loss was invoked. */ 523 unsigned int beacon_loss_count; 524 525 /* 526 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 527 * that triggered a cqm event. 0 indicates that no event has been 528 * generated for the current association. 529 */ 530 int last_cqm_event_signal; 531 532 /* 533 * State variables for keeping track of RSSI of the AP currently 534 * connected to and informing driver when RSSI has gone 535 * below/above a certain threshold. 536 */ 537 int rssi_min_thold, rssi_max_thold; 538 int last_ave_beacon_signal; 539 540 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 541 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 542 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 543 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 544 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 545 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 546 547 /* TDLS support */ 548 u8 tdls_peer[ETH_ALEN] __aligned(2); 549 struct delayed_work tdls_peer_del_work; 550 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 551 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 552 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 553 bool tdls_chan_switch_prohibited; 554 bool tdls_wider_bw_prohibited; 555 556 /* WMM-AC TSPEC support */ 557 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 558 /* Use a separate work struct so that we can do something here 559 * while the sdata->work is flushing the queues, for example. 560 * otherwise, in scenarios where we hardly get any traffic out 561 * on the BE queue, but there's a lot of VO traffic, we might 562 * get stuck in a downgraded situation and flush takes forever. 563 */ 564 struct delayed_work tx_tspec_wk; 565 566 /* Information elements from the last transmitted (Re)Association 567 * Request frame. 568 */ 569 u8 *assoc_req_ies; 570 size_t assoc_req_ies_len; 571 }; 572 573 struct ieee80211_if_ibss { 574 struct timer_list timer; 575 struct work_struct csa_connection_drop_work; 576 577 unsigned long last_scan_completed; 578 579 u32 basic_rates; 580 581 bool fixed_bssid; 582 bool fixed_channel; 583 bool privacy; 584 585 bool control_port; 586 bool userspace_handles_dfs; 587 588 u8 bssid[ETH_ALEN] __aligned(2); 589 u8 ssid[IEEE80211_MAX_SSID_LEN]; 590 u8 ssid_len, ie_len; 591 u8 *ie; 592 struct cfg80211_chan_def chandef; 593 594 unsigned long ibss_join_req; 595 /* probe response/beacon for IBSS */ 596 struct beacon_data __rcu *presp; 597 598 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 599 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 600 601 spinlock_t incomplete_lock; 602 struct list_head incomplete_stations; 603 604 enum { 605 IEEE80211_IBSS_MLME_SEARCH, 606 IEEE80211_IBSS_MLME_JOINED, 607 } state; 608 }; 609 610 /** 611 * struct ieee80211_if_ocb - OCB mode state 612 * 613 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 614 * @wrkq_flags: OCB deferred task action 615 * @incomplete_lock: delayed STA insertion lock 616 * @incomplete_stations: list of STAs waiting for delayed insertion 617 * @joined: indication if the interface is connected to an OCB network 618 */ 619 struct ieee80211_if_ocb { 620 struct timer_list housekeeping_timer; 621 unsigned long wrkq_flags; 622 623 spinlock_t incomplete_lock; 624 struct list_head incomplete_stations; 625 626 bool joined; 627 }; 628 629 /** 630 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 631 * 632 * these declarations define the interface, which enables 633 * vendor-specific mesh synchronization 634 * 635 */ 636 struct ieee802_11_elems; 637 struct ieee80211_mesh_sync_ops { 638 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype, 639 struct ieee80211_mgmt *mgmt, unsigned int len, 640 const struct ieee80211_meshconf_ie *mesh_cfg, 641 struct ieee80211_rx_status *rx_status); 642 643 /* should be called with beacon_data under RCU read lock */ 644 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 645 struct beacon_data *beacon); 646 /* add other framework functions here */ 647 }; 648 649 struct mesh_csa_settings { 650 struct rcu_head rcu_head; 651 struct cfg80211_csa_settings settings; 652 }; 653 654 /** 655 * struct mesh_table 656 * 657 * @known_gates: list of known mesh gates and their mpaths by the station. The 658 * gate's mpath may or may not be resolved and active. 659 * @gates_lock: protects updates to known_gates 660 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr 661 * @walk_head: linked list containing all mesh_path objects 662 * @walk_lock: lock protecting walk_head 663 * @entries: number of entries in the table 664 */ 665 struct mesh_table { 666 struct hlist_head known_gates; 667 spinlock_t gates_lock; 668 struct rhashtable rhead; 669 struct hlist_head walk_head; 670 spinlock_t walk_lock; 671 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ 672 }; 673 674 struct ieee80211_if_mesh { 675 struct timer_list housekeeping_timer; 676 struct timer_list mesh_path_timer; 677 struct timer_list mesh_path_root_timer; 678 679 unsigned long wrkq_flags; 680 unsigned long mbss_changed; 681 682 bool userspace_handles_dfs; 683 684 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 685 size_t mesh_id_len; 686 /* Active Path Selection Protocol Identifier */ 687 u8 mesh_pp_id; 688 /* Active Path Selection Metric Identifier */ 689 u8 mesh_pm_id; 690 /* Congestion Control Mode Identifier */ 691 u8 mesh_cc_id; 692 /* Synchronization Protocol Identifier */ 693 u8 mesh_sp_id; 694 /* Authentication Protocol Identifier */ 695 u8 mesh_auth_id; 696 /* Local mesh Sequence Number */ 697 u32 sn; 698 /* Last used PREQ ID */ 699 u32 preq_id; 700 atomic_t mpaths; 701 /* Timestamp of last SN update */ 702 unsigned long last_sn_update; 703 /* Time when it's ok to send next PERR */ 704 unsigned long next_perr; 705 /* Timestamp of last PREQ sent */ 706 unsigned long last_preq; 707 struct mesh_rmc *rmc; 708 spinlock_t mesh_preq_queue_lock; 709 struct mesh_preq_queue preq_queue; 710 int preq_queue_len; 711 struct mesh_stats mshstats; 712 struct mesh_config mshcfg; 713 atomic_t estab_plinks; 714 u32 mesh_seqnum; 715 bool accepting_plinks; 716 int num_gates; 717 struct beacon_data __rcu *beacon; 718 const u8 *ie; 719 u8 ie_len; 720 enum { 721 IEEE80211_MESH_SEC_NONE = 0x0, 722 IEEE80211_MESH_SEC_AUTHED = 0x1, 723 IEEE80211_MESH_SEC_SECURED = 0x2, 724 } security; 725 bool user_mpm; 726 /* Extensible Synchronization Framework */ 727 const struct ieee80211_mesh_sync_ops *sync_ops; 728 s64 sync_offset_clockdrift_max; 729 spinlock_t sync_offset_lock; 730 /* mesh power save */ 731 enum nl80211_mesh_power_mode nonpeer_pm; 732 int ps_peers_light_sleep; 733 int ps_peers_deep_sleep; 734 struct ps_data ps; 735 /* Channel Switching Support */ 736 struct mesh_csa_settings __rcu *csa; 737 enum { 738 IEEE80211_MESH_CSA_ROLE_NONE, 739 IEEE80211_MESH_CSA_ROLE_INIT, 740 IEEE80211_MESH_CSA_ROLE_REPEATER, 741 } csa_role; 742 u8 chsw_ttl; 743 u16 pre_value; 744 745 /* offset from skb->data while building IE */ 746 int meshconf_offset; 747 748 struct mesh_table mesh_paths; 749 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ 750 int mesh_paths_generation; 751 int mpp_paths_generation; 752 }; 753 754 #ifdef CONFIG_MAC80211_MESH 755 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 756 do { (msh)->mshstats.name++; } while (0) 757 #else 758 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 759 do { } while (0) 760 #endif 761 762 /** 763 * enum ieee80211_sub_if_data_flags - virtual interface flags 764 * 765 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 766 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 767 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 768 * associated stations and deliver multicast frames both 769 * back to wireless media and to the local net stack. 770 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 771 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 772 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart 773 * recovery 774 */ 775 enum ieee80211_sub_if_data_flags { 776 IEEE80211_SDATA_ALLMULTI = BIT(0), 777 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 778 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 779 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 780 IEEE80211_SDATA_IN_DRIVER = BIT(5), 781 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6), 782 }; 783 784 /** 785 * enum ieee80211_sdata_state_bits - virtual interface state bits 786 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 787 * mirrors netif_running() but is separate for interface type 788 * change handling while the interface is up 789 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 790 * mode, so queues are stopped 791 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 792 * to offchannel, reset when offchannel returns 793 */ 794 enum ieee80211_sdata_state_bits { 795 SDATA_STATE_RUNNING, 796 SDATA_STATE_OFFCHANNEL, 797 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 798 }; 799 800 /** 801 * enum ieee80211_chanctx_mode - channel context configuration mode 802 * 803 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 804 * multiple interfaces 805 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 806 * only by a single interface. This can be used for example for 807 * non-fixed channel IBSS. 808 */ 809 enum ieee80211_chanctx_mode { 810 IEEE80211_CHANCTX_SHARED, 811 IEEE80211_CHANCTX_EXCLUSIVE 812 }; 813 814 /** 815 * enum ieee80211_chanctx_replace_state - channel context replacement state 816 * 817 * This is used for channel context in-place reservations that require channel 818 * context switch/swap. 819 * 820 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 821 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 822 * by a (not yet registered) channel context pointed by %replace_ctx. 823 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 824 * replaces an existing channel context pointed to by %replace_ctx. 825 */ 826 enum ieee80211_chanctx_replace_state { 827 IEEE80211_CHANCTX_REPLACE_NONE, 828 IEEE80211_CHANCTX_WILL_BE_REPLACED, 829 IEEE80211_CHANCTX_REPLACES_OTHER, 830 }; 831 832 struct ieee80211_chanctx { 833 struct list_head list; 834 struct rcu_head rcu_head; 835 836 struct list_head assigned_vifs; 837 struct list_head reserved_vifs; 838 839 enum ieee80211_chanctx_replace_state replace_state; 840 struct ieee80211_chanctx *replace_ctx; 841 842 enum ieee80211_chanctx_mode mode; 843 bool driver_present; 844 845 struct ieee80211_chanctx_conf conf; 846 }; 847 848 struct mac80211_qos_map { 849 struct cfg80211_qos_map qos_map; 850 struct rcu_head rcu_head; 851 }; 852 853 enum txq_info_flags { 854 IEEE80211_TXQ_STOP, 855 IEEE80211_TXQ_AMPDU, 856 IEEE80211_TXQ_NO_AMSDU, 857 IEEE80211_TXQ_STOP_NETIF_TX, 858 }; 859 860 /** 861 * struct txq_info - per tid queue 862 * 863 * @tin: contains packets split into multiple flows 864 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 865 * a fq_flow which is already owned by a different tin 866 * @def_cvars: codel vars for @def_flow 867 * @schedule_order: used with ieee80211_local->active_txqs 868 * @frags: used to keep fragments created after dequeue 869 */ 870 struct txq_info { 871 struct fq_tin tin; 872 struct codel_vars def_cvars; 873 struct codel_stats cstats; 874 struct rb_node schedule_order; 875 876 struct sk_buff_head frags; 877 unsigned long flags; 878 879 /* keep last! */ 880 struct ieee80211_txq txq; 881 }; 882 883 struct ieee80211_if_mntr { 884 u32 flags; 885 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 886 887 struct list_head list; 888 }; 889 890 /** 891 * struct ieee80211_if_nan - NAN state 892 * 893 * @conf: current NAN configuration 894 * @func_ids: a bitmap of available instance_id's 895 */ 896 struct ieee80211_if_nan { 897 struct cfg80211_nan_conf conf; 898 899 /* protects function_inst_ids */ 900 spinlock_t func_lock; 901 struct idr function_inst_ids; 902 }; 903 904 struct ieee80211_sub_if_data { 905 struct list_head list; 906 907 struct wireless_dev wdev; 908 909 /* keys */ 910 struct list_head key_list; 911 912 /* count for keys needing tailroom space allocation */ 913 int crypto_tx_tailroom_needed_cnt; 914 int crypto_tx_tailroom_pending_dec; 915 struct delayed_work dec_tailroom_needed_wk; 916 917 struct net_device *dev; 918 struct ieee80211_local *local; 919 920 unsigned int flags; 921 922 unsigned long state; 923 924 char name[IFNAMSIZ]; 925 926 struct ieee80211_fragment_cache frags; 927 928 /* TID bitmap for NoAck policy */ 929 u16 noack_map; 930 931 /* bit field of ACM bits (BIT(802.1D tag)) */ 932 u8 wmm_acm; 933 934 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + 935 NUM_DEFAULT_MGMT_KEYS + 936 NUM_DEFAULT_BEACON_KEYS]; 937 struct ieee80211_key __rcu *default_unicast_key; 938 struct ieee80211_key __rcu *default_multicast_key; 939 struct ieee80211_key __rcu *default_mgmt_key; 940 struct ieee80211_key __rcu *default_beacon_key; 941 942 u16 sequence_number; 943 __be16 control_port_protocol; 944 bool control_port_no_encrypt; 945 bool control_port_no_preauth; 946 bool control_port_over_nl80211; 947 int encrypt_headroom; 948 949 atomic_t num_tx_queued; 950 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 951 struct mac80211_qos_map __rcu *qos_map; 952 953 struct airtime_info airtime[IEEE80211_NUM_ACS]; 954 955 struct work_struct csa_finalize_work; 956 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 957 struct cfg80211_chan_def csa_chandef; 958 959 struct work_struct color_change_finalize_work; 960 961 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 962 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 963 964 /* context reservation -- protected with chanctx_mtx */ 965 struct ieee80211_chanctx *reserved_chanctx; 966 struct cfg80211_chan_def reserved_chandef; 967 bool reserved_radar_required; 968 bool reserved_ready; 969 970 /* used to reconfigure hardware SM PS */ 971 struct work_struct recalc_smps; 972 973 struct work_struct work; 974 struct sk_buff_head skb_queue; 975 struct sk_buff_head status_queue; 976 977 u8 needed_rx_chains; 978 enum ieee80211_smps_mode smps_mode; 979 980 int user_power_level; /* in dBm */ 981 int ap_power_level; /* in dBm */ 982 983 bool radar_required; 984 struct delayed_work dfs_cac_timer_work; 985 986 /* 987 * AP this belongs to: self in AP mode and 988 * corresponding AP in VLAN mode, NULL for 989 * all others (might be needed later in IBSS) 990 */ 991 struct ieee80211_if_ap *bss; 992 993 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 994 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 995 996 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 997 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 998 999 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 1000 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 1001 1002 /* Beacon frame (non-MCS) rate (as a bitmap) */ 1003 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 1004 bool beacon_rate_set; 1005 1006 union { 1007 struct ieee80211_if_ap ap; 1008 struct ieee80211_if_vlan vlan; 1009 struct ieee80211_if_managed mgd; 1010 struct ieee80211_if_ibss ibss; 1011 struct ieee80211_if_mesh mesh; 1012 struct ieee80211_if_ocb ocb; 1013 struct ieee80211_if_mntr mntr; 1014 struct ieee80211_if_nan nan; 1015 } u; 1016 1017 #ifdef CONFIG_MAC80211_DEBUGFS 1018 struct { 1019 struct dentry *subdir_stations; 1020 struct dentry *default_unicast_key; 1021 struct dentry *default_multicast_key; 1022 struct dentry *default_mgmt_key; 1023 struct dentry *default_beacon_key; 1024 } debugfs; 1025 #endif 1026 1027 /* must be last, dynamically sized area in this! */ 1028 struct ieee80211_vif vif; 1029 }; 1030 1031 static inline 1032 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1033 { 1034 return container_of(p, struct ieee80211_sub_if_data, vif); 1035 } 1036 1037 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1038 __acquires(&sdata->wdev.mtx) 1039 { 1040 mutex_lock(&sdata->wdev.mtx); 1041 __acquire(&sdata->wdev.mtx); 1042 } 1043 1044 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1045 __releases(&sdata->wdev.mtx) 1046 { 1047 mutex_unlock(&sdata->wdev.mtx); 1048 __release(&sdata->wdev.mtx); 1049 } 1050 1051 #define sdata_dereference(p, sdata) \ 1052 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1053 1054 static inline void 1055 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1056 { 1057 lockdep_assert_held(&sdata->wdev.mtx); 1058 } 1059 1060 static inline int 1061 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1062 { 1063 switch (chandef->width) { 1064 case NL80211_CHAN_WIDTH_5: 1065 return 2; 1066 case NL80211_CHAN_WIDTH_10: 1067 return 1; 1068 default: 1069 return 0; 1070 } 1071 } 1072 1073 static inline int 1074 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1075 { 1076 struct ieee80211_chanctx_conf *chanctx_conf; 1077 int shift = 0; 1078 1079 rcu_read_lock(); 1080 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1081 if (chanctx_conf) 1082 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1083 rcu_read_unlock(); 1084 1085 return shift; 1086 } 1087 1088 static inline int 1089 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems) 1090 { 1091 int i, len = 0; 1092 1093 if (!elems) 1094 return 0; 1095 1096 for (i = 0; i < elems->cnt; i++) 1097 len += elems->elem[i].len; 1098 1099 return len; 1100 } 1101 1102 enum { 1103 IEEE80211_RX_MSG = 1, 1104 IEEE80211_TX_STATUS_MSG = 2, 1105 }; 1106 1107 enum queue_stop_reason { 1108 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1109 IEEE80211_QUEUE_STOP_REASON_PS, 1110 IEEE80211_QUEUE_STOP_REASON_CSA, 1111 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1112 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1113 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1114 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1115 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1116 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1117 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1118 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1119 1120 IEEE80211_QUEUE_STOP_REASONS, 1121 }; 1122 1123 #ifdef CONFIG_MAC80211_LEDS 1124 struct tpt_led_trigger { 1125 char name[32]; 1126 const struct ieee80211_tpt_blink *blink_table; 1127 unsigned int blink_table_len; 1128 struct timer_list timer; 1129 struct ieee80211_local *local; 1130 unsigned long prev_traffic; 1131 unsigned long tx_bytes, rx_bytes; 1132 unsigned int active, want; 1133 bool running; 1134 }; 1135 #endif 1136 1137 /** 1138 * mac80211 scan flags - currently active scan mode 1139 * 1140 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1141 * well be on the operating channel 1142 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1143 * determine if we are on the operating channel or not 1144 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1145 * channel. This should not interrupt normal traffic. 1146 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1147 * that the scan completed. 1148 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1149 * a scan complete for an aborted scan. 1150 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1151 * cancelled. 1152 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR 1153 * and could send a probe request after receiving a beacon. 1154 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request 1155 */ 1156 enum { 1157 SCAN_SW_SCANNING, 1158 SCAN_HW_SCANNING, 1159 SCAN_ONCHANNEL_SCANNING, 1160 SCAN_COMPLETED, 1161 SCAN_ABORTED, 1162 SCAN_HW_CANCELLED, 1163 SCAN_BEACON_WAIT, 1164 SCAN_BEACON_DONE, 1165 }; 1166 1167 /** 1168 * enum mac80211_scan_state - scan state machine states 1169 * 1170 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1171 * determines if we should keep on scanning or switch back to the 1172 * operating channel 1173 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1174 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1175 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1176 * send out data 1177 * @SCAN_RESUME: Resume the scan and scan the next channel 1178 * @SCAN_ABORT: Abort the scan and go back to operating channel 1179 */ 1180 enum mac80211_scan_state { 1181 SCAN_DECISION, 1182 SCAN_SET_CHANNEL, 1183 SCAN_SEND_PROBE, 1184 SCAN_SUSPEND, 1185 SCAN_RESUME, 1186 SCAN_ABORT, 1187 }; 1188 1189 /** 1190 * struct airtime_sched_info - state used for airtime scheduling and AQL 1191 * 1192 * @lock: spinlock that protects all the fields in this struct 1193 * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time 1194 * @schedule_pos: the current position maintained while a driver walks the tree 1195 * with ieee80211_next_txq() 1196 * @active_list: list of struct airtime_info structs that were active within 1197 * the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute 1198 * weight_sum 1199 * @last_weight_update: used for rate limiting walking active_list 1200 * @last_schedule_time: tracks the last time a transmission was scheduled; used 1201 * for catching up v_t if no stations are eligible for 1202 * transmission. 1203 * @v_t: global virtual time; queues with v_t < this are eligible for 1204 * transmission 1205 * @weight_sum: total sum of all active stations used for dividing airtime 1206 * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast 1207 * path - see comment above 1208 * IEEE80211_RECIPROCAL_DIVISOR_64) 1209 * @aql_txq_limit_low: AQL limit when total outstanding airtime 1210 * is < IEEE80211_AQL_THRESHOLD 1211 * @aql_txq_limit_high: AQL limit when total outstanding airtime 1212 * is > IEEE80211_AQL_THRESHOLD 1213 */ 1214 struct airtime_sched_info { 1215 spinlock_t lock; 1216 struct rb_root_cached active_txqs; 1217 struct rb_node *schedule_pos; 1218 struct list_head active_list; 1219 u64 last_weight_update; 1220 u64 last_schedule_activity; 1221 u64 v_t; 1222 u64 weight_sum; 1223 u64 weight_sum_reciprocal; 1224 u32 aql_txq_limit_low; 1225 u32 aql_txq_limit_high; 1226 }; 1227 DECLARE_STATIC_KEY_FALSE(aql_disable); 1228 1229 struct ieee80211_local { 1230 /* embed the driver visible part. 1231 * don't cast (use the static inlines below), but we keep 1232 * it first anyway so they become a no-op */ 1233 struct ieee80211_hw hw; 1234 1235 struct fq fq; 1236 struct codel_vars *cvars; 1237 struct codel_params cparams; 1238 1239 /* protects active_txqs and txqi->schedule_order */ 1240 struct airtime_sched_info airtime[IEEE80211_NUM_ACS]; 1241 u16 airtime_flags; 1242 u32 aql_threshold; 1243 atomic_t aql_total_pending_airtime; 1244 1245 const struct ieee80211_ops *ops; 1246 1247 /* 1248 * private workqueue to mac80211. mac80211 makes this accessible 1249 * via ieee80211_queue_work() 1250 */ 1251 struct workqueue_struct *workqueue; 1252 1253 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1254 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1255 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1256 spinlock_t queue_stop_reason_lock; 1257 1258 int open_count; 1259 int monitors, cooked_mntrs; 1260 /* number of interfaces with corresponding FIF_ flags */ 1261 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1262 fif_probe_req; 1263 bool probe_req_reg; 1264 bool rx_mcast_action_reg; 1265 unsigned int filter_flags; /* FIF_* */ 1266 1267 bool wiphy_ciphers_allocated; 1268 1269 bool use_chanctx; 1270 1271 /* protects the aggregated multicast list and filter calls */ 1272 spinlock_t filter_lock; 1273 1274 /* used for uploading changed mc list */ 1275 struct work_struct reconfig_filter; 1276 1277 /* aggregated multicast list */ 1278 struct netdev_hw_addr_list mc_list; 1279 1280 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1281 1282 /* 1283 * suspended is true if we finished all the suspend _and_ we have 1284 * not yet come up from resume. This is to be used by mac80211 1285 * to ensure driver sanity during suspend and mac80211's own 1286 * sanity. It can eventually be used for WoW as well. 1287 */ 1288 bool suspended; 1289 1290 /* suspending is true during the whole suspend process */ 1291 bool suspending; 1292 1293 /* 1294 * Resuming is true while suspended, but when we're reprogramming the 1295 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1296 * again even though some other parts of the stack are still suspended 1297 * and we still drop received frames to avoid waking the stack. 1298 */ 1299 bool resuming; 1300 1301 /* 1302 * quiescing is true during the suspend process _only_ to 1303 * ease timer cancelling etc. 1304 */ 1305 bool quiescing; 1306 1307 /* device is started */ 1308 bool started; 1309 1310 /* device is during a HW reconfig */ 1311 bool in_reconfig; 1312 1313 /* wowlan is enabled -- don't reconfig on resume */ 1314 bool wowlan; 1315 1316 struct work_struct radar_detected_work; 1317 1318 /* number of RX chains the hardware has */ 1319 u8 rx_chains; 1320 1321 /* bitmap of which sbands were copied */ 1322 u8 sband_allocated; 1323 1324 int tx_headroom; /* required headroom for hardware/radiotap */ 1325 1326 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1327 * added to skb_queue will be processed, but frames in 1328 * skb_queue_unreliable may be dropped if the total length of these 1329 * queues increases over the limit. */ 1330 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1331 struct tasklet_struct tasklet; 1332 struct sk_buff_head skb_queue; 1333 struct sk_buff_head skb_queue_unreliable; 1334 1335 spinlock_t rx_path_lock; 1336 1337 /* Station data */ 1338 /* 1339 * The mutex only protects the list, hash table and 1340 * counter, reads are done with RCU. 1341 */ 1342 struct mutex sta_mtx; 1343 spinlock_t tim_lock; 1344 unsigned long num_sta; 1345 struct list_head sta_list; 1346 struct rhltable sta_hash; 1347 struct timer_list sta_cleanup; 1348 int sta_generation; 1349 1350 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1351 struct tasklet_struct tx_pending_tasklet; 1352 struct tasklet_struct wake_txqs_tasklet; 1353 1354 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1355 1356 /* number of interfaces with allmulti RX */ 1357 atomic_t iff_allmultis; 1358 1359 struct rate_control_ref *rate_ctrl; 1360 1361 struct arc4_ctx wep_tx_ctx; 1362 struct arc4_ctx wep_rx_ctx; 1363 u32 wep_iv; 1364 1365 /* see iface.c */ 1366 struct list_head interfaces; 1367 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1368 struct mutex iflist_mtx; 1369 1370 /* 1371 * Key mutex, protects sdata's key_list and sta_info's 1372 * key pointers and ptk_idx (write access, they're RCU.) 1373 */ 1374 struct mutex key_mtx; 1375 1376 /* mutex for scan and work locking */ 1377 struct mutex mtx; 1378 1379 /* Scanning and BSS list */ 1380 unsigned long scanning; 1381 struct cfg80211_ssid scan_ssid; 1382 struct cfg80211_scan_request *int_scan_req; 1383 struct cfg80211_scan_request __rcu *scan_req; 1384 struct ieee80211_scan_request *hw_scan_req; 1385 struct cfg80211_chan_def scan_chandef; 1386 enum nl80211_band hw_scan_band; 1387 int scan_channel_idx; 1388 int scan_ies_len; 1389 int hw_scan_ies_bufsize; 1390 struct cfg80211_scan_info scan_info; 1391 1392 struct work_struct sched_scan_stopped_work; 1393 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1394 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1395 u8 scan_addr[ETH_ALEN]; 1396 1397 unsigned long leave_oper_channel_time; 1398 enum mac80211_scan_state next_scan_state; 1399 struct delayed_work scan_work; 1400 struct ieee80211_sub_if_data __rcu *scan_sdata; 1401 /* For backward compatibility only -- do not use */ 1402 struct cfg80211_chan_def _oper_chandef; 1403 1404 /* Temporary remain-on-channel for off-channel operations */ 1405 struct ieee80211_channel *tmp_channel; 1406 1407 /* channel contexts */ 1408 struct list_head chanctx_list; 1409 struct mutex chanctx_mtx; 1410 1411 #ifdef CONFIG_MAC80211_LEDS 1412 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1413 struct led_trigger tpt_led; 1414 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1415 atomic_t radio_led_active, tpt_led_active; 1416 struct tpt_led_trigger *tpt_led_trigger; 1417 #endif 1418 1419 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1420 /* SNMP counters */ 1421 /* dot11CountersTable */ 1422 u32 dot11TransmittedFragmentCount; 1423 u32 dot11MulticastTransmittedFrameCount; 1424 u32 dot11FailedCount; 1425 u32 dot11RetryCount; 1426 u32 dot11MultipleRetryCount; 1427 u32 dot11FrameDuplicateCount; 1428 u32 dot11ReceivedFragmentCount; 1429 u32 dot11MulticastReceivedFrameCount; 1430 u32 dot11TransmittedFrameCount; 1431 1432 /* TX/RX handler statistics */ 1433 unsigned int tx_handlers_drop; 1434 unsigned int tx_handlers_queued; 1435 unsigned int tx_handlers_drop_wep; 1436 unsigned int tx_handlers_drop_not_assoc; 1437 unsigned int tx_handlers_drop_unauth_port; 1438 unsigned int rx_handlers_drop; 1439 unsigned int rx_handlers_queued; 1440 unsigned int rx_handlers_drop_nullfunc; 1441 unsigned int rx_handlers_drop_defrag; 1442 unsigned int tx_expand_skb_head; 1443 unsigned int tx_expand_skb_head_cloned; 1444 unsigned int rx_expand_skb_head_defrag; 1445 unsigned int rx_handlers_fragments; 1446 unsigned int tx_status_drop; 1447 #define I802_DEBUG_INC(c) (c)++ 1448 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1449 #define I802_DEBUG_INC(c) do { } while (0) 1450 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1451 1452 1453 int total_ps_buffered; /* total number of all buffered unicast and 1454 * multicast packets for power saving stations 1455 */ 1456 1457 bool pspolling; 1458 /* 1459 * PS can only be enabled when we have exactly one managed 1460 * interface (and monitors) in PS, this then points there. 1461 */ 1462 struct ieee80211_sub_if_data *ps_sdata; 1463 struct work_struct dynamic_ps_enable_work; 1464 struct work_struct dynamic_ps_disable_work; 1465 struct timer_list dynamic_ps_timer; 1466 struct notifier_block ifa_notifier; 1467 struct notifier_block ifa6_notifier; 1468 1469 /* 1470 * The dynamic ps timeout configured from user space via WEXT - 1471 * this will override whatever chosen by mac80211 internally. 1472 */ 1473 int dynamic_ps_forced_timeout; 1474 1475 int user_power_level; /* in dBm, for all interfaces */ 1476 1477 enum ieee80211_smps_mode smps_mode; 1478 1479 struct work_struct restart_work; 1480 1481 #ifdef CONFIG_MAC80211_DEBUGFS 1482 struct local_debugfsdentries { 1483 struct dentry *rcdir; 1484 struct dentry *keys; 1485 } debugfs; 1486 bool force_tx_status; 1487 #endif 1488 1489 /* 1490 * Remain-on-channel support 1491 */ 1492 struct delayed_work roc_work; 1493 struct list_head roc_list; 1494 struct work_struct hw_roc_start, hw_roc_done; 1495 unsigned long hw_roc_start_time; 1496 u64 roc_cookie_counter; 1497 1498 struct idr ack_status_frames; 1499 spinlock_t ack_status_lock; 1500 1501 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1502 1503 /* virtual monitor interface */ 1504 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1505 struct cfg80211_chan_def monitor_chandef; 1506 1507 /* extended capabilities provided by mac80211 */ 1508 u8 ext_capa[8]; 1509 }; 1510 1511 static inline struct ieee80211_sub_if_data * 1512 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) 1513 { 1514 return netdev_priv(dev); 1515 } 1516 1517 static inline struct ieee80211_sub_if_data * 1518 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1519 { 1520 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1521 } 1522 1523 static inline struct ieee80211_supported_band * 1524 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1525 { 1526 struct ieee80211_local *local = sdata->local; 1527 struct ieee80211_chanctx_conf *chanctx_conf; 1528 enum nl80211_band band; 1529 1530 rcu_read_lock(); 1531 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1532 1533 if (!chanctx_conf) { 1534 rcu_read_unlock(); 1535 return NULL; 1536 } 1537 1538 band = chanctx_conf->def.chan->band; 1539 rcu_read_unlock(); 1540 1541 return local->hw.wiphy->bands[band]; 1542 } 1543 1544 /* this struct holds the value parsing from channel switch IE */ 1545 struct ieee80211_csa_ie { 1546 struct cfg80211_chan_def chandef; 1547 u8 mode; 1548 u8 count; 1549 u8 ttl; 1550 u16 pre_value; 1551 u16 reason_code; 1552 u32 max_switch_time; 1553 }; 1554 1555 /* Parsed Information Elements */ 1556 struct ieee802_11_elems { 1557 const u8 *ie_start; 1558 size_t total_len; 1559 u32 crc; 1560 1561 /* pointers to IEs */ 1562 const struct ieee80211_tdls_lnkie *lnk_id; 1563 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1564 const u8 *ext_capab; 1565 const u8 *ssid; 1566 const u8 *supp_rates; 1567 const u8 *ds_params; 1568 const struct ieee80211_tim_ie *tim; 1569 const u8 *rsn; 1570 const u8 *rsnx; 1571 const u8 *erp_info; 1572 const u8 *ext_supp_rates; 1573 const u8 *wmm_info; 1574 const u8 *wmm_param; 1575 const struct ieee80211_ht_cap *ht_cap_elem; 1576 const struct ieee80211_ht_operation *ht_operation; 1577 const struct ieee80211_vht_cap *vht_cap_elem; 1578 const struct ieee80211_vht_operation *vht_operation; 1579 const struct ieee80211_meshconf_ie *mesh_config; 1580 const u8 *he_cap; 1581 const struct ieee80211_he_operation *he_operation; 1582 const struct ieee80211_he_spr *he_spr; 1583 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1584 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1585 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1586 const u8 *uora_element; 1587 const u8 *mesh_id; 1588 const u8 *peering; 1589 const __le16 *awake_window; 1590 const u8 *preq; 1591 const u8 *prep; 1592 const u8 *perr; 1593 const struct ieee80211_rann_ie *rann; 1594 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1595 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1596 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1597 const u8 *max_channel_switch_time; 1598 const u8 *country_elem; 1599 const u8 *pwr_constr_elem; 1600 const u8 *cisco_dtpc_elem; 1601 const struct ieee80211_timeout_interval_ie *timeout_int; 1602 const u8 *opmode_notif; 1603 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1604 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1605 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1606 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1607 const struct ieee80211_bssid_index *bssid_index; 1608 u8 max_bssid_indicator; 1609 u8 dtim_count; 1610 u8 dtim_period; 1611 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1612 const struct ieee80211_s1g_cap *s1g_capab; 1613 const struct ieee80211_s1g_oper_ie *s1g_oper; 1614 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1615 const struct ieee80211_aid_response_ie *aid_resp; 1616 const struct ieee80211_eht_cap_elem *eht_cap; 1617 const struct ieee80211_eht_operation *eht_operation; 1618 1619 /* length of them, respectively */ 1620 u8 ext_capab_len; 1621 u8 ssid_len; 1622 u8 supp_rates_len; 1623 u8 tim_len; 1624 u8 rsn_len; 1625 u8 rsnx_len; 1626 u8 ext_supp_rates_len; 1627 u8 wmm_info_len; 1628 u8 wmm_param_len; 1629 u8 he_cap_len; 1630 u8 mesh_id_len; 1631 u8 peering_len; 1632 u8 preq_len; 1633 u8 prep_len; 1634 u8 perr_len; 1635 u8 country_elem_len; 1636 u8 bssid_index_len; 1637 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1638 u8 tx_pwr_env_num; 1639 u8 eht_cap_len; 1640 1641 /* whether a parse error occurred while retrieving these elements */ 1642 bool parse_error; 1643 }; 1644 1645 static inline struct ieee80211_local *hw_to_local( 1646 struct ieee80211_hw *hw) 1647 { 1648 return container_of(hw, struct ieee80211_local, hw); 1649 } 1650 1651 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1652 { 1653 return container_of(txq, struct txq_info, txq); 1654 } 1655 1656 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1657 { 1658 struct txq_info *txqi = to_txq_info(txq); 1659 1660 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1661 } 1662 1663 static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq) 1664 { 1665 struct ieee80211_sub_if_data *sdata; 1666 struct sta_info *sta; 1667 1668 if (txq->sta) { 1669 sta = container_of(txq->sta, struct sta_info, sta); 1670 return &sta->airtime[txq->ac]; 1671 } 1672 1673 sdata = vif_to_sdata(txq->vif); 1674 return &sdata->airtime[txq->ac]; 1675 } 1676 1677 /* To avoid divisions in the fast path, we keep pre-computed reciprocals for 1678 * airtime weight calculations. There are two different weights to keep track 1679 * of: The per-station weight and the sum of weights per phy. 1680 * 1681 * For the per-station weights (kept in airtime_info below), we use 32-bit 1682 * reciprocals with a devisor of 2^19. This lets us keep the multiplications and 1683 * divisions for the station weights as 32-bit operations at the cost of a bit 1684 * of rounding error for high weights; but the choice of divisor keeps rounding 1685 * errors <10% for weights <2^15, assuming no more than 8ms of airtime is 1686 * reported at a time. 1687 * 1688 * For the per-phy sum of weights the values can get higher, so we use 64-bit 1689 * operations for those with a 32-bit divisor, which should avoid any 1690 * significant rounding errors. 1691 */ 1692 #define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL 1693 #define IEEE80211_RECIPROCAL_SHIFT_64 32 1694 #define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U 1695 #define IEEE80211_RECIPROCAL_SHIFT_32 19 1696 1697 static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight) 1698 { 1699 if (air_info->weight == weight) 1700 return; 1701 1702 air_info->weight = weight; 1703 if (weight) { 1704 air_info->weight_reciprocal = 1705 IEEE80211_RECIPROCAL_DIVISOR_32 / weight; 1706 } else { 1707 air_info->weight_reciprocal = 0; 1708 } 1709 } 1710 1711 static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched, 1712 int weight_sum) 1713 { 1714 if (air_sched->weight_sum == weight_sum) 1715 return; 1716 1717 air_sched->weight_sum = weight_sum; 1718 if (air_sched->weight_sum) { 1719 air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64; 1720 do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum); 1721 } else { 1722 air_sched->weight_sum_reciprocal = 0; 1723 } 1724 } 1725 1726 /* A problem when trying to enforce airtime fairness is that we want to divide 1727 * the airtime between the currently *active* stations. However, basing this on 1728 * the instantaneous queue state of stations doesn't work, as queues tend to 1729 * oscillate very quickly between empty and occupied, leading to the scheduler 1730 * thinking only a single station is active when deciding whether to allow 1731 * transmission (and thus not throttling correctly). 1732 * 1733 * To fix this we use a timer-based notion of activity: a station is considered 1734 * active if it has been scheduled within the last 100 ms; we keep a separate 1735 * list of all the stations considered active in this manner, and lazily update 1736 * the total weight of active stations from this list (filtering the stations in 1737 * the list by their 'last active' time). 1738 * 1739 * We add one additional safeguard to guard against stations that manage to get 1740 * scheduled every 100 ms but don't transmit a lot of data, and thus don't use 1741 * up any airtime. Such stations would be able to get priority for an extended 1742 * period of time if they do start transmitting at full capacity again, and so 1743 * we add an explicit maximum for how far behind a station is allowed to fall in 1744 * the virtual airtime domain. This limit is set to a relatively high value of 1745 * 20 ms because the main mechanism for catching up idle stations is the active 1746 * state as described above; i.e., the hard limit should only be hit in 1747 * pathological cases. 1748 */ 1749 #define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC) 1750 #define AIRTIME_MAX_BEHIND 20000 /* 20 ms */ 1751 1752 static inline bool airtime_is_active(struct airtime_info *air_info, u64 now) 1753 { 1754 return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION; 1755 } 1756 1757 static inline void airtime_set_active(struct airtime_sched_info *air_sched, 1758 struct airtime_info *air_info, u64 now) 1759 { 1760 air_info->last_scheduled = now; 1761 air_sched->last_schedule_activity = now; 1762 list_move_tail(&air_info->list, &air_sched->active_list); 1763 } 1764 1765 static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched, 1766 u64 v_t, u64 now) 1767 { 1768 air_sched->v_t = v_t; 1769 return true; 1770 } 1771 1772 static inline void init_airtime_info(struct airtime_info *air_info, 1773 struct airtime_sched_info *air_sched) 1774 { 1775 atomic_set(&air_info->aql_tx_pending, 0); 1776 air_info->aql_limit_low = air_sched->aql_txq_limit_low; 1777 air_info->aql_limit_high = air_sched->aql_txq_limit_high; 1778 airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT); 1779 INIT_LIST_HEAD(&air_info->list); 1780 } 1781 1782 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1783 { 1784 return ether_addr_equal(raddr, addr) || 1785 is_broadcast_ether_addr(raddr); 1786 } 1787 1788 static inline bool 1789 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1790 { 1791 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1792 status->flag & RX_FLAG_MACTIME_END); 1793 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1794 RX_FLAG_MACTIME_PLCP_START)); 1795 } 1796 1797 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1798 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1799 1800 /* This function returns the number of multicast stations connected to this 1801 * interface. It returns -1 if that number is not tracked, that is for netdevs 1802 * not in AP or AP_VLAN mode or when using 4addr. 1803 */ 1804 static inline int 1805 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1806 { 1807 if (sdata->vif.type == NL80211_IFTYPE_AP) 1808 return atomic_read(&sdata->u.ap.num_mcast_sta); 1809 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1810 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1811 return -1; 1812 } 1813 1814 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1815 struct ieee80211_rx_status *status, 1816 unsigned int mpdu_len, 1817 unsigned int mpdu_offset); 1818 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1819 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1820 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1821 u32 changed); 1822 void ieee80211_configure_filter(struct ieee80211_local *local); 1823 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1824 1825 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1826 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1827 u64 *cookie, gfp_t gfp); 1828 1829 void ieee80211_check_fast_rx(struct sta_info *sta); 1830 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1831 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1832 void ieee80211_clear_fast_rx(struct sta_info *sta); 1833 1834 /* STA code */ 1835 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1836 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1837 struct cfg80211_auth_request *req); 1838 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1839 struct cfg80211_assoc_request *req); 1840 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1841 struct cfg80211_deauth_request *req); 1842 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1843 struct cfg80211_disassoc_request *req); 1844 void ieee80211_send_pspoll(struct ieee80211_local *local, 1845 struct ieee80211_sub_if_data *sdata); 1846 void ieee80211_recalc_ps(struct ieee80211_local *local); 1847 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1848 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1849 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1850 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1851 struct sk_buff *skb); 1852 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1853 struct sk_buff *skb); 1854 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1855 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1856 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1857 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1858 __le16 fc, bool acked); 1859 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1860 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1861 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1862 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1863 u8 reason, bool tx); 1864 1865 /* IBSS code */ 1866 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1867 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1868 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1869 const u8 *bssid, const u8 *addr, u32 supp_rates); 1870 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1871 struct cfg80211_ibss_params *params); 1872 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1873 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1874 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1875 struct sk_buff *skb); 1876 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1877 struct cfg80211_csa_settings *csa_settings); 1878 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1879 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1880 1881 /* OCB code */ 1882 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1883 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1884 const u8 *bssid, const u8 *addr, u32 supp_rates); 1885 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1886 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1887 struct ocb_setup *setup); 1888 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1889 1890 /* mesh code */ 1891 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1892 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1893 struct sk_buff *skb); 1894 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1895 struct cfg80211_csa_settings *csa_settings); 1896 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1897 1898 /* scan/BSS handling */ 1899 void ieee80211_scan_work(struct work_struct *work); 1900 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1901 const u8 *ssid, u8 ssid_len, 1902 struct ieee80211_channel **channels, 1903 unsigned int n_channels, 1904 enum nl80211_bss_scan_width scan_width); 1905 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1906 struct cfg80211_scan_request *req); 1907 void ieee80211_scan_cancel(struct ieee80211_local *local); 1908 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1909 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1910 1911 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1912 struct ieee80211_bss * 1913 ieee80211_bss_info_update(struct ieee80211_local *local, 1914 struct ieee80211_rx_status *rx_status, 1915 struct ieee80211_mgmt *mgmt, 1916 size_t len, 1917 struct ieee80211_channel *channel); 1918 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1919 struct ieee80211_bss *bss); 1920 1921 /* scheduled scan handling */ 1922 int 1923 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1924 struct cfg80211_sched_scan_request *req); 1925 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1926 struct cfg80211_sched_scan_request *req); 1927 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1928 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1929 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1930 1931 /* off-channel/mgmt-tx */ 1932 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1933 void ieee80211_offchannel_return(struct ieee80211_local *local); 1934 void ieee80211_roc_setup(struct ieee80211_local *local); 1935 void ieee80211_start_next_roc(struct ieee80211_local *local); 1936 void ieee80211_roc_purge(struct ieee80211_local *local, 1937 struct ieee80211_sub_if_data *sdata); 1938 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1939 struct ieee80211_channel *chan, 1940 unsigned int duration, u64 *cookie); 1941 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1942 struct wireless_dev *wdev, u64 cookie); 1943 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1944 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1945 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1946 struct wireless_dev *wdev, u64 cookie); 1947 1948 /* channel switch handling */ 1949 void ieee80211_csa_finalize_work(struct work_struct *work); 1950 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1951 struct cfg80211_csa_settings *params); 1952 1953 /* color change handling */ 1954 void ieee80211_color_change_finalize_work(struct work_struct *work); 1955 1956 /* interface handling */ 1957 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1958 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1959 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1960 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1961 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1962 MAC80211_SUPPORTED_FEATURES_RX) 1963 1964 int ieee80211_iface_init(void); 1965 void ieee80211_iface_exit(void); 1966 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1967 unsigned char name_assign_type, 1968 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1969 struct vif_params *params); 1970 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1971 enum nl80211_iftype type); 1972 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1973 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1974 u32 ieee80211_idle_off(struct ieee80211_local *local); 1975 void ieee80211_recalc_idle(struct ieee80211_local *local); 1976 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1977 const int offset); 1978 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1979 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1980 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1981 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1982 1983 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1984 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1985 bool update_bss); 1986 void ieee80211_recalc_offload(struct ieee80211_local *local); 1987 1988 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1989 { 1990 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1991 } 1992 1993 /* tx handling */ 1994 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1995 void ieee80211_tx_pending(struct tasklet_struct *t); 1996 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1997 struct net_device *dev); 1998 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1999 struct net_device *dev); 2000 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 2001 struct net_device *dev); 2002 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 2003 struct net_device *dev, 2004 u32 info_flags, 2005 u32 ctrl_flags, 2006 u64 *cookie); 2007 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 2008 struct sk_buff_head *skbs); 2009 struct sk_buff * 2010 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 2011 struct sk_buff *skb, u32 info_flags); 2012 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 2013 struct ieee80211_supported_band *sband, 2014 int retry_count, int shift, bool send_to_cooked, 2015 struct ieee80211_tx_status *status); 2016 2017 void ieee80211_check_fast_xmit(struct sta_info *sta); 2018 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 2019 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 2020 void ieee80211_clear_fast_xmit(struct sta_info *sta); 2021 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 2022 const u8 *buf, size_t len, 2023 const u8 *dest, __be16 proto, bool unencrypted, 2024 u64 *cookie); 2025 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 2026 const u8 *buf, size_t len); 2027 void ieee80211_resort_txq(struct ieee80211_hw *hw, 2028 struct ieee80211_txq *txq); 2029 void ieee80211_unschedule_txq(struct ieee80211_hw *hw, 2030 struct ieee80211_txq *txq, 2031 bool purge); 2032 void ieee80211_update_airtime_weight(struct ieee80211_local *local, 2033 struct airtime_sched_info *air_sched, 2034 u64 now, bool force); 2035 2036 /* HT */ 2037 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 2038 struct ieee80211_sta_ht_cap *ht_cap); 2039 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 2040 struct ieee80211_supported_band *sband, 2041 const struct ieee80211_ht_cap *ht_cap_ie, 2042 struct sta_info *sta); 2043 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 2044 const u8 *da, u16 tid, 2045 u16 initiator, u16 reason_code); 2046 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 2047 enum ieee80211_smps_mode smps, const u8 *da, 2048 const u8 *bssid); 2049 void ieee80211_request_smps_ap_work(struct work_struct *work); 2050 void ieee80211_request_smps_mgd_work(struct work_struct *work); 2051 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2052 enum ieee80211_smps_mode smps_mode_new); 2053 2054 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2055 u16 initiator, u16 reason, bool stop); 2056 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2057 u16 initiator, u16 reason, bool stop); 2058 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2059 u8 dialog_token, u16 timeout, 2060 u16 start_seq_num, u16 ba_policy, u16 tid, 2061 u16 buf_size, bool tx, bool auto_seq, 2062 const struct ieee80211_addba_ext_ie *addbaext); 2063 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2064 enum ieee80211_agg_stop_reason reason); 2065 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2066 struct sta_info *sta, 2067 struct ieee80211_mgmt *mgmt, size_t len); 2068 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2069 struct sta_info *sta, 2070 struct ieee80211_mgmt *mgmt, 2071 size_t len); 2072 void ieee80211_process_addba_request(struct ieee80211_local *local, 2073 struct sta_info *sta, 2074 struct ieee80211_mgmt *mgmt, 2075 size_t len); 2076 2077 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2078 enum ieee80211_agg_stop_reason reason); 2079 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2080 enum ieee80211_agg_stop_reason reason); 2081 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2082 struct tid_ampdu_tx *tid_tx); 2083 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2084 struct tid_ampdu_tx *tid_tx); 2085 void ieee80211_ba_session_work(struct work_struct *work); 2086 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2087 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2088 2089 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2090 enum nl80211_smps_mode 2091 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2092 2093 /* VHT */ 2094 void 2095 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2096 struct ieee80211_supported_band *sband, 2097 const struct ieee80211_vht_cap *vht_cap_ie, 2098 struct sta_info *sta); 2099 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 2100 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 2101 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 2102 enum ieee80211_sta_rx_bandwidth 2103 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2104 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 2105 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2106 struct ieee80211_mgmt *mgmt); 2107 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2108 struct sta_info *sta, u8 opmode, 2109 enum nl80211_band band); 2110 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2111 struct sta_info *sta, u8 opmode, 2112 enum nl80211_band band); 2113 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2114 struct ieee80211_sta_vht_cap *vht_cap); 2115 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2116 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2117 enum nl80211_chan_width 2118 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 2119 2120 /* HE */ 2121 void 2122 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2123 struct ieee80211_supported_band *sband, 2124 const u8 *he_cap_ie, u8 he_cap_len, 2125 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2126 struct sta_info *sta); 2127 void 2128 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2129 const struct ieee80211_he_spr *he_spr_ie_elem); 2130 2131 void 2132 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2133 const struct ieee80211_he_operation *he_op_ie_elem); 2134 2135 /* S1G */ 2136 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2137 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2138 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2139 struct sk_buff *skb); 2140 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2141 struct sk_buff *skb); 2142 2143 /* Spectrum management */ 2144 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2145 struct ieee80211_mgmt *mgmt, 2146 size_t len); 2147 /** 2148 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2149 * @sdata: the sdata of the interface which has received the frame 2150 * @elems: parsed 802.11 elements received with the frame 2151 * @current_band: indicates the current band 2152 * @vht_cap_info: VHT capabilities of the transmitter 2153 * @sta_flags: contains information about own capabilities and restrictions 2154 * to decide which channel switch announcements can be accepted. Only the 2155 * following subset of &enum ieee80211_sta_flags are evaluated: 2156 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 2157 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 2158 * %IEEE80211_STA_DISABLE_160MHZ. 2159 * @bssid: the currently connected bssid (for reporting) 2160 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2161 All of them will be filled with if success only. 2162 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2163 */ 2164 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2165 struct ieee802_11_elems *elems, 2166 enum nl80211_band current_band, 2167 u32 vht_cap_info, 2168 u32 sta_flags, u8 *bssid, 2169 struct ieee80211_csa_ie *csa_ie); 2170 2171 /* Suspend/resume and hw reconfiguration */ 2172 int ieee80211_reconfig(struct ieee80211_local *local); 2173 void ieee80211_stop_device(struct ieee80211_local *local); 2174 2175 int __ieee80211_suspend(struct ieee80211_hw *hw, 2176 struct cfg80211_wowlan *wowlan); 2177 2178 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2179 { 2180 struct ieee80211_local *local = hw_to_local(hw); 2181 2182 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2183 !test_bit(SCAN_COMPLETED, &local->scanning), 2184 "%s: resume with hardware scan still in progress\n", 2185 wiphy_name(hw->wiphy)); 2186 2187 return ieee80211_reconfig(hw_to_local(hw)); 2188 } 2189 2190 /* utility functions/constants */ 2191 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2192 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2193 int rate, int erp, int short_preamble, 2194 int shift); 2195 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2196 struct ieee80211_tx_queue_params *qparam, 2197 int ac); 2198 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 2199 bool bss_notify, bool enable_qos); 2200 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2201 struct sta_info *sta, struct sk_buff *skb); 2202 2203 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2204 struct sk_buff *skb, int tid, 2205 enum nl80211_band band); 2206 2207 /* sta_out needs to be checked for ERR_PTR() before using */ 2208 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2209 struct sk_buff *skb, 2210 struct sta_info **sta_out); 2211 2212 static inline void 2213 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2214 struct sk_buff *skb, int tid, 2215 enum nl80211_band band) 2216 { 2217 rcu_read_lock(); 2218 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 2219 rcu_read_unlock(); 2220 } 2221 2222 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2223 struct sk_buff *skb, int tid) 2224 { 2225 struct ieee80211_chanctx_conf *chanctx_conf; 2226 2227 rcu_read_lock(); 2228 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2229 if (WARN_ON(!chanctx_conf)) { 2230 rcu_read_unlock(); 2231 kfree_skb(skb); 2232 return; 2233 } 2234 2235 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 2236 chanctx_conf->def.chan->band); 2237 rcu_read_unlock(); 2238 } 2239 2240 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2241 struct sk_buff *skb) 2242 { 2243 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2244 ieee80211_tx_skb_tid(sdata, skb, 7); 2245 } 2246 2247 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len, 2248 bool action, 2249 u64 filter, u32 crc, 2250 const u8 *transmitter_bssid, 2251 const u8 *bss_bssid); 2252 static inline struct ieee802_11_elems * 2253 ieee802_11_parse_elems(const u8 *start, size_t len, bool action, 2254 const u8 *transmitter_bssid, 2255 const u8 *bss_bssid) 2256 { 2257 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, 2258 transmitter_bssid, bss_bssid); 2259 } 2260 2261 2262 extern const int ieee802_1d_to_ac[8]; 2263 2264 static inline int ieee80211_ac_from_tid(int tid) 2265 { 2266 return ieee802_1d_to_ac[tid & 7]; 2267 } 2268 2269 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2270 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2271 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2272 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2273 struct ieee80211_sub_if_data *sdata, 2274 bool powersave); 2275 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2276 struct ieee80211_sub_if_data *sdata); 2277 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2278 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2279 2280 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2281 unsigned long queues, 2282 enum queue_stop_reason reason, 2283 bool refcounted); 2284 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2285 struct ieee80211_sub_if_data *sdata, 2286 enum queue_stop_reason reason); 2287 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2288 struct ieee80211_sub_if_data *sdata, 2289 enum queue_stop_reason reason); 2290 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2291 unsigned long queues, 2292 enum queue_stop_reason reason, 2293 bool refcounted); 2294 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2295 enum queue_stop_reason reason, 2296 bool refcounted); 2297 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2298 enum queue_stop_reason reason, 2299 bool refcounted); 2300 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2301 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2302 struct sk_buff *skb); 2303 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2304 struct sk_buff_head *skbs); 2305 void ieee80211_flush_queues(struct ieee80211_local *local, 2306 struct ieee80211_sub_if_data *sdata, bool drop); 2307 void __ieee80211_flush_queues(struct ieee80211_local *local, 2308 struct ieee80211_sub_if_data *sdata, 2309 unsigned int queues, bool drop); 2310 2311 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2312 { 2313 /* 2314 * It's unsafe to try to do any work during reconfigure flow. 2315 * When the flow ends the work will be requeued. 2316 */ 2317 if (local->in_reconfig) 2318 return false; 2319 2320 /* 2321 * If quiescing is set, we are racing with __ieee80211_suspend. 2322 * __ieee80211_suspend flushes the workers after setting quiescing, 2323 * and we check quiescing / suspended before enqueing new workers. 2324 * We should abort the worker to avoid the races below. 2325 */ 2326 if (local->quiescing) 2327 return false; 2328 2329 /* 2330 * We might already be suspended if the following scenario occurs: 2331 * __ieee80211_suspend Control path 2332 * 2333 * if (local->quiescing) 2334 * return; 2335 * local->quiescing = true; 2336 * flush_workqueue(); 2337 * queue_work(...); 2338 * local->suspended = true; 2339 * local->quiescing = false; 2340 * worker starts running... 2341 */ 2342 if (local->suspended) 2343 return false; 2344 2345 return true; 2346 } 2347 2348 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2349 void ieee80211_txq_set_params(struct ieee80211_local *local); 2350 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2351 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2352 struct sta_info *sta, 2353 struct txq_info *txq, int tid); 2354 void ieee80211_txq_purge(struct ieee80211_local *local, 2355 struct txq_info *txqi); 2356 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2357 struct ieee80211_sub_if_data *sdata); 2358 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2359 struct txq_info *txqi); 2360 void ieee80211_wake_txqs(struct tasklet_struct *t); 2361 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2362 u16 transaction, u16 auth_alg, u16 status, 2363 const u8 *extra, size_t extra_len, const u8 *bssid, 2364 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2365 u32 tx_flags); 2366 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2367 const u8 *da, const u8 *bssid, 2368 u16 stype, u16 reason, 2369 bool send_frame, u8 *frame_buf); 2370 2371 enum { 2372 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2373 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2374 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2375 }; 2376 2377 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2378 size_t buffer_len, 2379 struct ieee80211_scan_ies *ie_desc, 2380 const u8 *ie, size_t ie_len, 2381 u8 bands_used, u32 *rate_masks, 2382 struct cfg80211_chan_def *chandef, 2383 u32 flags); 2384 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2385 const u8 *src, const u8 *dst, 2386 u32 ratemask, 2387 struct ieee80211_channel *chan, 2388 const u8 *ssid, size_t ssid_len, 2389 const u8 *ie, size_t ie_len, 2390 u32 flags); 2391 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2392 struct ieee802_11_elems *elems, 2393 enum nl80211_band band, u32 *basic_rates); 2394 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2395 enum ieee80211_smps_mode smps_mode); 2396 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2397 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2398 2399 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2400 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2401 u16 cap); 2402 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2403 const struct cfg80211_chan_def *chandef, 2404 u16 prot_mode, bool rifs_mode); 2405 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2406 const struct cfg80211_chan_def *chandef); 2407 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2408 u32 cap); 2409 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2410 const struct cfg80211_chan_def *chandef); 2411 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2412 u8 *ieee80211_ie_build_he_cap(u32 disable_flags, u8 *pos, 2413 const struct ieee80211_sta_he_cap *he_cap, 2414 u8 *end); 2415 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2416 struct sk_buff *skb); 2417 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2418 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2419 const struct ieee80211_supported_band *sband, 2420 const u8 *srates, int srates_len, u32 *rates); 2421 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2422 struct sk_buff *skb, bool need_basic, 2423 enum nl80211_band band); 2424 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2425 struct sk_buff *skb, bool need_basic, 2426 enum nl80211_band band); 2427 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2428 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2429 struct ieee80211_sta_s1g_cap *caps, 2430 struct sk_buff *skb); 2431 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2432 struct sk_buff *skb); 2433 2434 /* channel management */ 2435 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2436 struct cfg80211_chan_def *chandef); 2437 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2438 const struct ieee80211_vht_operation *oper, 2439 const struct ieee80211_ht_operation *htop, 2440 struct cfg80211_chan_def *chandef); 2441 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2442 const struct ieee80211_he_operation *he_oper, 2443 const struct ieee80211_eht_operation *eht_oper, 2444 struct cfg80211_chan_def *chandef); 2445 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2446 struct cfg80211_chan_def *chandef); 2447 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2448 2449 int __must_check 2450 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2451 const struct cfg80211_chan_def *chandef, 2452 enum ieee80211_chanctx_mode mode); 2453 int __must_check 2454 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2455 const struct cfg80211_chan_def *chandef, 2456 enum ieee80211_chanctx_mode mode, 2457 bool radar_required); 2458 int __must_check 2459 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2460 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2461 2462 int __must_check 2463 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2464 const struct cfg80211_chan_def *chandef, 2465 u32 *changed); 2466 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2467 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2468 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2469 bool clear); 2470 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2471 struct ieee80211_chanctx *ctx); 2472 2473 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2474 struct ieee80211_chanctx *chanctx); 2475 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2476 struct ieee80211_chanctx *ctx); 2477 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2478 2479 void ieee80211_dfs_cac_timer(unsigned long data); 2480 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2481 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2482 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2483 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2484 struct cfg80211_csa_settings *csa_settings); 2485 2486 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2487 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2488 const struct ieee80211_cipher_scheme * 2489 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2490 enum nl80211_iftype iftype); 2491 int ieee80211_cs_headroom(struct ieee80211_local *local, 2492 struct cfg80211_crypto_settings *crypto, 2493 enum nl80211_iftype iftype); 2494 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2495 struct ieee80211_sub_if_data *sdata); 2496 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2497 const struct cfg80211_chan_def *chandef, 2498 enum ieee80211_chanctx_mode chanmode, 2499 u8 radar_detect); 2500 int ieee80211_max_num_channels(struct ieee80211_local *local); 2501 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2502 struct ieee80211_chanctx *ctx); 2503 2504 /* TDLS */ 2505 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2506 const u8 *peer, u8 action_code, u8 dialog_token, 2507 u16 status_code, u32 peer_capability, 2508 bool initiator, const u8 *extra_ies, 2509 size_t extra_ies_len); 2510 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2511 const u8 *peer, enum nl80211_tdls_operation oper); 2512 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2513 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2514 const u8 *addr, u8 oper_class, 2515 struct cfg80211_chan_def *chandef); 2516 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2517 struct net_device *dev, 2518 const u8 *addr); 2519 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2520 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2521 const u8 *peer, u16 reason); 2522 void 2523 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2524 struct sk_buff *skb); 2525 2526 2527 const char *ieee80211_get_reason_code_string(u16 reason_code); 2528 u16 ieee80211_encode_usf(int val); 2529 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2530 enum nl80211_iftype type); 2531 2532 extern const struct ethtool_ops ieee80211_ethtool_ops; 2533 2534 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2535 struct ieee80211_vif *vif, 2536 struct ieee80211_sta *pubsta, 2537 int len, bool ampdu); 2538 #ifdef CONFIG_MAC80211_NOINLINE 2539 #define debug_noinline noinline 2540 #else 2541 #define debug_noinline 2542 #endif 2543 2544 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2545 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2546 2547 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2548 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 2549 const struct ieee80211_sta_he_cap *he_cap, 2550 const struct ieee80211_sta_eht_cap *eht_cap, 2551 u8 *end); 2552 2553 void 2554 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, 2555 struct ieee80211_supported_band *sband, 2556 const u8 *he_cap_ie, u8 he_cap_len, 2557 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, 2558 u8 eht_cap_len, struct sta_info *sta); 2559 #endif /* IEEE80211_I_H */ 2560