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