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) 2018-2020 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 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 54 * reception of at least three fragmented frames. This limit can be increased 55 * by changing this define, at the cost of slower frame reassembly and 56 * increased memory use (about 2 kB of RAM per entry). */ 57 #define IEEE80211_FRAGMENT_MAX 4 58 59 /* power level hasn't been configured (or set to automatic) */ 60 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 61 62 /* 63 * Some APs experience problems when working with U-APSD. Decreasing the 64 * probability of that happening by using legacy mode for all ACs but VO isn't 65 * enough. 66 * 67 * Cisco 4410N originally forced us to enable VO by default only because it 68 * treated non-VO ACs as legacy. 69 * 70 * However some APs (notably Netgear R7000) silently reclassify packets to 71 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 72 * clients would never see some frames (e.g. ARP responses) or would fetch them 73 * accidentally after a long time. 74 * 75 * It makes little sense to enable u-APSD queues by default because it needs 76 * userspace applications to be aware of it to actually take advantage of the 77 * possible additional powersavings. Implicitly depending on driver autotrigger 78 * frame support doesn't make much sense. 79 */ 80 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 81 82 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 83 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 84 85 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 86 87 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 88 89 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 90 91 struct ieee80211_fragment_entry { 92 struct sk_buff_head skb_list; 93 unsigned long first_frag_time; 94 u16 seq; 95 u16 extra_len; 96 u16 last_frag; 97 u8 rx_queue; 98 bool check_sequential_pn; /* needed for CCMP/GCMP */ 99 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 100 }; 101 102 103 struct ieee80211_bss { 104 u32 device_ts_beacon, device_ts_presp; 105 106 bool wmm_used; 107 bool uapsd_supported; 108 109 #define IEEE80211_MAX_SUPP_RATES 32 110 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 111 size_t supp_rates_len; 112 struct ieee80211_rate *beacon_rate; 113 114 /* 115 * During association, we save an ERP value from a probe response so 116 * that we can feed ERP info to the driver when handling the 117 * association completes. these fields probably won't be up-to-date 118 * otherwise, you probably don't want to use them. 119 */ 120 bool has_erp_value; 121 u8 erp_value; 122 123 /* Keep track of the corruption of the last beacon/probe response. */ 124 u8 corrupt_data; 125 126 /* Keep track of what bits of information we have valid info for. */ 127 u8 valid_data; 128 }; 129 130 /** 131 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 132 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 133 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 134 * 135 * These are bss flags that are attached to a bss in the 136 * @corrupt_data field of &struct ieee80211_bss. 137 */ 138 enum ieee80211_bss_corrupt_data_flags { 139 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 140 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 141 }; 142 143 /** 144 * enum ieee80211_valid_data_flags - BSS valid data flags 145 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 146 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 147 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 148 * 149 * These are bss flags that are attached to a bss in the 150 * @valid_data field of &struct ieee80211_bss. They show which parts 151 * of the data structure were received as a result of an un-corrupted 152 * beacon/probe response. 153 */ 154 enum ieee80211_bss_valid_data_flags { 155 IEEE80211_BSS_VALID_WMM = BIT(1), 156 IEEE80211_BSS_VALID_RATES = BIT(2), 157 IEEE80211_BSS_VALID_ERP = BIT(3) 158 }; 159 160 typedef unsigned __bitwise ieee80211_tx_result; 161 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 162 #define TX_DROP ((__force ieee80211_tx_result) 1u) 163 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 164 165 #define IEEE80211_TX_NO_SEQNO BIT(0) 166 #define IEEE80211_TX_UNICAST BIT(1) 167 #define IEEE80211_TX_PS_BUFFERED BIT(2) 168 169 struct ieee80211_tx_data { 170 struct sk_buff *skb; 171 struct sk_buff_head skbs; 172 struct ieee80211_local *local; 173 struct ieee80211_sub_if_data *sdata; 174 struct sta_info *sta; 175 struct ieee80211_key *key; 176 struct ieee80211_tx_rate rate; 177 178 unsigned int flags; 179 }; 180 181 182 typedef unsigned __bitwise ieee80211_rx_result; 183 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 184 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 185 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 186 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 187 188 /** 189 * enum ieee80211_packet_rx_flags - packet RX flags 190 * @IEEE80211_RX_AMSDU: a-MSDU packet 191 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 192 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 193 * 194 * These are per-frame flags that are attached to a frame in the 195 * @rx_flags field of &struct ieee80211_rx_status. 196 */ 197 enum ieee80211_packet_rx_flags { 198 IEEE80211_RX_AMSDU = BIT(3), 199 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 200 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 201 }; 202 203 /** 204 * enum ieee80211_rx_flags - RX data flags 205 * 206 * @IEEE80211_RX_CMNTR: received on cooked monitor already 207 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 208 * to cfg80211_report_obss_beacon(). 209 * 210 * These flags are used across handling multiple interfaces 211 * for a single frame. 212 */ 213 enum ieee80211_rx_flags { 214 IEEE80211_RX_CMNTR = BIT(0), 215 IEEE80211_RX_BEACON_REPORTED = BIT(1), 216 }; 217 218 struct ieee80211_rx_data { 219 struct napi_struct *napi; 220 struct sk_buff *skb; 221 struct ieee80211_local *local; 222 struct ieee80211_sub_if_data *sdata; 223 struct sta_info *sta; 224 struct ieee80211_key *key; 225 226 unsigned int flags; 227 228 /* 229 * Index into sequence numbers array, 0..16 230 * since the last (16) is used for non-QoS, 231 * will be 16 on non-QoS frames. 232 */ 233 int seqno_idx; 234 235 /* 236 * Index into the security IV/PN arrays, 0..16 237 * since the last (16) is used for CCMP-encrypted 238 * management frames, will be set to 16 on mgmt 239 * frames and 0 on non-QoS frames. 240 */ 241 int security_idx; 242 243 u32 tkip_iv32; 244 u16 tkip_iv16; 245 }; 246 247 struct ieee80211_csa_settings { 248 const u16 *counter_offsets_beacon; 249 const u16 *counter_offsets_presp; 250 251 int n_counter_offsets_beacon; 252 int n_counter_offsets_presp; 253 254 u8 count; 255 }; 256 257 struct beacon_data { 258 u8 *head, *tail; 259 int head_len, tail_len; 260 struct ieee80211_meshconf_ie *meshconf; 261 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 262 u8 csa_current_counter; 263 struct rcu_head rcu_head; 264 }; 265 266 struct probe_resp { 267 struct rcu_head rcu_head; 268 int len; 269 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 270 u8 data[0]; 271 }; 272 273 struct ps_data { 274 /* yes, this looks ugly, but guarantees that we can later use 275 * bitmap_empty :) 276 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 277 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 278 __aligned(__alignof__(unsigned long)); 279 struct sk_buff_head bc_buf; 280 atomic_t num_sta_ps; /* number of stations in PS mode */ 281 int dtim_count; 282 bool dtim_bc_mc; 283 }; 284 285 struct ieee80211_if_ap { 286 struct beacon_data __rcu *beacon; 287 struct probe_resp __rcu *probe_resp; 288 289 /* to be used after channel switch. */ 290 struct cfg80211_beacon_data *next_beacon; 291 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 292 293 struct ps_data ps; 294 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 295 296 bool multicast_to_unicast; 297 }; 298 299 struct ieee80211_if_wds { 300 struct sta_info *sta; 301 u8 remote_addr[ETH_ALEN]; 302 }; 303 304 struct ieee80211_if_vlan { 305 struct list_head list; /* write-protected with RTNL and local->mtx */ 306 307 /* used for all tx if the VLAN is configured to 4-addr mode */ 308 struct sta_info __rcu *sta; 309 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 310 }; 311 312 struct mesh_stats { 313 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 314 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 315 __u32 fwded_frames; /* Mesh total forwarded frames */ 316 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 317 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 318 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 319 }; 320 321 #define PREQ_Q_F_START 0x1 322 #define PREQ_Q_F_REFRESH 0x2 323 struct mesh_preq_queue { 324 struct list_head list; 325 u8 dst[ETH_ALEN]; 326 u8 flags; 327 }; 328 329 struct ieee80211_roc_work { 330 struct list_head list; 331 332 struct ieee80211_sub_if_data *sdata; 333 334 struct ieee80211_channel *chan; 335 336 bool started, abort, hw_begun, notified; 337 bool on_channel; 338 339 unsigned long start_time; 340 341 u32 duration, req_duration; 342 struct sk_buff *frame; 343 u64 cookie, mgmt_tx_cookie; 344 enum ieee80211_roc_type type; 345 }; 346 347 /* flags used in struct ieee80211_if_managed.flags */ 348 enum ieee80211_sta_flags { 349 IEEE80211_STA_CONNECTION_POLL = BIT(1), 350 IEEE80211_STA_CONTROL_PORT = BIT(2), 351 IEEE80211_STA_DISABLE_HT = BIT(4), 352 IEEE80211_STA_MFP_ENABLED = BIT(6), 353 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 354 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 355 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 356 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 357 IEEE80211_STA_DISABLE_VHT = BIT(11), 358 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 359 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 360 IEEE80211_STA_DISABLE_WMM = BIT(14), 361 IEEE80211_STA_ENABLE_RRM = BIT(15), 362 IEEE80211_STA_DISABLE_HE = BIT(16), 363 }; 364 365 struct ieee80211_mgd_auth_data { 366 struct cfg80211_bss *bss; 367 unsigned long timeout; 368 int tries; 369 u16 algorithm, expected_transaction; 370 371 u8 key[WLAN_KEY_LEN_WEP104]; 372 u8 key_len, key_idx; 373 bool done; 374 bool peer_confirmed; 375 bool timeout_started; 376 377 u16 sae_trans, sae_status; 378 size_t data_len; 379 u8 data[]; 380 }; 381 382 struct ieee80211_mgd_assoc_data { 383 struct cfg80211_bss *bss; 384 const u8 *supp_rates; 385 386 unsigned long timeout; 387 int tries; 388 389 u16 capability; 390 u8 prev_bssid[ETH_ALEN]; 391 u8 ssid[IEEE80211_MAX_SSID_LEN]; 392 u8 ssid_len; 393 u8 supp_rates_len; 394 bool wmm, uapsd; 395 bool need_beacon; 396 bool synced; 397 bool timeout_started; 398 399 u8 ap_ht_param; 400 401 struct ieee80211_vht_cap ap_vht_cap; 402 403 u8 fils_nonces[2 * FILS_NONCE_LEN]; 404 u8 fils_kek[FILS_MAX_KEK_LEN]; 405 size_t fils_kek_len; 406 407 size_t ie_len; 408 u8 ie[]; 409 }; 410 411 struct ieee80211_sta_tx_tspec { 412 /* timestamp of the first packet in the time slice */ 413 unsigned long time_slice_start; 414 415 u32 admitted_time; /* in usecs, unlike over the air */ 416 u8 tsid; 417 s8 up; /* signed to be able to invalidate with -1 during teardown */ 418 419 /* consumed TX time in microseconds in the time slice */ 420 u32 consumed_tx_time; 421 enum { 422 TX_TSPEC_ACTION_NONE = 0, 423 TX_TSPEC_ACTION_DOWNGRADE, 424 TX_TSPEC_ACTION_STOP_DOWNGRADE, 425 } action; 426 bool downgraded; 427 }; 428 429 DECLARE_EWMA(beacon_signal, 4, 4) 430 431 struct ieee80211_if_managed { 432 struct timer_list timer; 433 struct timer_list conn_mon_timer; 434 struct timer_list bcn_mon_timer; 435 struct timer_list chswitch_timer; 436 struct work_struct monitor_work; 437 struct work_struct chswitch_work; 438 struct work_struct beacon_connection_loss_work; 439 struct work_struct csa_connection_drop_work; 440 441 unsigned long beacon_timeout; 442 unsigned long probe_timeout; 443 int probe_send_count; 444 bool nullfunc_failed; 445 bool connection_loss; 446 447 struct cfg80211_bss *associated; 448 struct ieee80211_mgd_auth_data *auth_data; 449 struct ieee80211_mgd_assoc_data *assoc_data; 450 451 u8 bssid[ETH_ALEN] __aligned(2); 452 453 u16 aid; 454 455 bool powersave; /* powersave requested for this iface */ 456 bool broken_ap; /* AP is broken -- turn off powersave */ 457 bool have_beacon; 458 u8 dtim_period; 459 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 460 driver_smps_mode; /* smps mode request */ 461 462 struct work_struct request_smps_work; 463 464 unsigned int flags; 465 466 bool csa_waiting_bcn; 467 bool csa_ignored_same_chan; 468 469 bool beacon_crc_valid; 470 u32 beacon_crc; 471 472 bool status_acked; 473 bool status_received; 474 __le16 status_fc; 475 476 enum { 477 IEEE80211_MFP_DISABLED, 478 IEEE80211_MFP_OPTIONAL, 479 IEEE80211_MFP_REQUIRED 480 } mfp; /* management frame protection */ 481 482 /* 483 * Bitmask of enabled u-apsd queues, 484 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 485 * to take effect. 486 */ 487 unsigned int uapsd_queues; 488 489 /* 490 * Maximum number of buffered frames AP can deliver during a 491 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 492 * Needs a new association to take effect. 493 */ 494 unsigned int uapsd_max_sp_len; 495 496 int wmm_last_param_set; 497 int mu_edca_last_param_set; 498 499 u8 use_4addr; 500 501 s16 p2p_noa_index; 502 503 struct ewma_beacon_signal ave_beacon_signal; 504 505 /* 506 * Number of Beacon frames used in ave_beacon_signal. This can be used 507 * to avoid generating less reliable cqm events that would be based 508 * only on couple of received frames. 509 */ 510 unsigned int count_beacon_signal; 511 512 /* Number of times beacon loss was invoked. */ 513 unsigned int beacon_loss_count; 514 515 /* 516 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 517 * that triggered a cqm event. 0 indicates that no event has been 518 * generated for the current association. 519 */ 520 int last_cqm_event_signal; 521 522 /* 523 * State variables for keeping track of RSSI of the AP currently 524 * connected to and informing driver when RSSI has gone 525 * below/above a certain threshold. 526 */ 527 int rssi_min_thold, rssi_max_thold; 528 int last_ave_beacon_signal; 529 530 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 531 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 532 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 533 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 534 535 /* TDLS support */ 536 u8 tdls_peer[ETH_ALEN] __aligned(2); 537 struct delayed_work tdls_peer_del_work; 538 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 539 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 540 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 541 bool tdls_chan_switch_prohibited; 542 bool tdls_wider_bw_prohibited; 543 544 /* WMM-AC TSPEC support */ 545 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 546 /* Use a separate work struct so that we can do something here 547 * while the sdata->work is flushing the queues, for example. 548 * otherwise, in scenarios where we hardly get any traffic out 549 * on the BE queue, but there's a lot of VO traffic, we might 550 * get stuck in a downgraded situation and flush takes forever. 551 */ 552 struct delayed_work tx_tspec_wk; 553 554 /* Information elements from the last transmitted (Re)Association 555 * Request frame. 556 */ 557 u8 *assoc_req_ies; 558 size_t assoc_req_ies_len; 559 }; 560 561 struct ieee80211_if_ibss { 562 struct timer_list timer; 563 struct work_struct csa_connection_drop_work; 564 565 unsigned long last_scan_completed; 566 567 u32 basic_rates; 568 569 bool fixed_bssid; 570 bool fixed_channel; 571 bool privacy; 572 573 bool control_port; 574 bool userspace_handles_dfs; 575 576 u8 bssid[ETH_ALEN] __aligned(2); 577 u8 ssid[IEEE80211_MAX_SSID_LEN]; 578 u8 ssid_len, ie_len; 579 u8 *ie; 580 struct cfg80211_chan_def chandef; 581 582 unsigned long ibss_join_req; 583 /* probe response/beacon for IBSS */ 584 struct beacon_data __rcu *presp; 585 586 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 587 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 588 589 spinlock_t incomplete_lock; 590 struct list_head incomplete_stations; 591 592 enum { 593 IEEE80211_IBSS_MLME_SEARCH, 594 IEEE80211_IBSS_MLME_JOINED, 595 } state; 596 }; 597 598 /** 599 * struct ieee80211_if_ocb - OCB mode state 600 * 601 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 602 * @wrkq_flags: OCB deferred task action 603 * @incomplete_lock: delayed STA insertion lock 604 * @incomplete_stations: list of STAs waiting for delayed insertion 605 * @joined: indication if the interface is connected to an OCB network 606 */ 607 struct ieee80211_if_ocb { 608 struct timer_list housekeeping_timer; 609 unsigned long wrkq_flags; 610 611 spinlock_t incomplete_lock; 612 struct list_head incomplete_stations; 613 614 bool joined; 615 }; 616 617 /** 618 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 619 * 620 * these declarations define the interface, which enables 621 * vendor-specific mesh synchronization 622 * 623 */ 624 struct ieee802_11_elems; 625 struct ieee80211_mesh_sync_ops { 626 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 627 u16 stype, 628 struct ieee80211_mgmt *mgmt, 629 struct ieee802_11_elems *elems, 630 struct ieee80211_rx_status *rx_status); 631 632 /* should be called with beacon_data under RCU read lock */ 633 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 634 struct beacon_data *beacon); 635 /* add other framework functions here */ 636 }; 637 638 struct mesh_csa_settings { 639 struct rcu_head rcu_head; 640 struct cfg80211_csa_settings settings; 641 }; 642 643 struct ieee80211_if_mesh { 644 struct timer_list housekeeping_timer; 645 struct timer_list mesh_path_timer; 646 struct timer_list mesh_path_root_timer; 647 648 unsigned long wrkq_flags; 649 unsigned long mbss_changed; 650 651 bool userspace_handles_dfs; 652 653 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 654 size_t mesh_id_len; 655 /* Active Path Selection Protocol Identifier */ 656 u8 mesh_pp_id; 657 /* Active Path Selection Metric Identifier */ 658 u8 mesh_pm_id; 659 /* Congestion Control Mode Identifier */ 660 u8 mesh_cc_id; 661 /* Synchronization Protocol Identifier */ 662 u8 mesh_sp_id; 663 /* Authentication Protocol Identifier */ 664 u8 mesh_auth_id; 665 /* Local mesh Sequence Number */ 666 u32 sn; 667 /* Last used PREQ ID */ 668 u32 preq_id; 669 atomic_t mpaths; 670 /* Timestamp of last SN update */ 671 unsigned long last_sn_update; 672 /* Time when it's ok to send next PERR */ 673 unsigned long next_perr; 674 /* Timestamp of last PREQ sent */ 675 unsigned long last_preq; 676 struct mesh_rmc *rmc; 677 spinlock_t mesh_preq_queue_lock; 678 struct mesh_preq_queue preq_queue; 679 int preq_queue_len; 680 struct mesh_stats mshstats; 681 struct mesh_config mshcfg; 682 atomic_t estab_plinks; 683 u32 mesh_seqnum; 684 bool accepting_plinks; 685 int num_gates; 686 struct beacon_data __rcu *beacon; 687 const u8 *ie; 688 u8 ie_len; 689 enum { 690 IEEE80211_MESH_SEC_NONE = 0x0, 691 IEEE80211_MESH_SEC_AUTHED = 0x1, 692 IEEE80211_MESH_SEC_SECURED = 0x2, 693 } security; 694 bool user_mpm; 695 /* Extensible Synchronization Framework */ 696 const struct ieee80211_mesh_sync_ops *sync_ops; 697 s64 sync_offset_clockdrift_max; 698 spinlock_t sync_offset_lock; 699 /* mesh power save */ 700 enum nl80211_mesh_power_mode nonpeer_pm; 701 int ps_peers_light_sleep; 702 int ps_peers_deep_sleep; 703 struct ps_data ps; 704 /* Channel Switching Support */ 705 struct mesh_csa_settings __rcu *csa; 706 enum { 707 IEEE80211_MESH_CSA_ROLE_NONE, 708 IEEE80211_MESH_CSA_ROLE_INIT, 709 IEEE80211_MESH_CSA_ROLE_REPEATER, 710 } csa_role; 711 u8 chsw_ttl; 712 u16 pre_value; 713 714 /* offset from skb->data while building IE */ 715 int meshconf_offset; 716 717 struct mesh_table *mesh_paths; 718 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 719 int mesh_paths_generation; 720 int mpp_paths_generation; 721 }; 722 723 #ifdef CONFIG_MAC80211_MESH 724 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 725 do { (msh)->mshstats.name++; } while (0) 726 #else 727 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 728 do { } while (0) 729 #endif 730 731 /** 732 * enum ieee80211_sub_if_data_flags - virtual interface flags 733 * 734 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 735 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 736 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 737 * associated stations and deliver multicast frames both 738 * back to wireless media and to the local net stack. 739 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 740 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 741 */ 742 enum ieee80211_sub_if_data_flags { 743 IEEE80211_SDATA_ALLMULTI = BIT(0), 744 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 745 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 746 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 747 IEEE80211_SDATA_IN_DRIVER = BIT(5), 748 }; 749 750 /** 751 * enum ieee80211_sdata_state_bits - virtual interface state bits 752 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 753 * mirrors netif_running() but is separate for interface type 754 * change handling while the interface is up 755 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 756 * mode, so queues are stopped 757 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 758 * to offchannel, reset when offchannel returns 759 */ 760 enum ieee80211_sdata_state_bits { 761 SDATA_STATE_RUNNING, 762 SDATA_STATE_OFFCHANNEL, 763 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 764 }; 765 766 /** 767 * enum ieee80211_chanctx_mode - channel context configuration mode 768 * 769 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 770 * multiple interfaces 771 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 772 * only by a single interface. This can be used for example for 773 * non-fixed channel IBSS. 774 */ 775 enum ieee80211_chanctx_mode { 776 IEEE80211_CHANCTX_SHARED, 777 IEEE80211_CHANCTX_EXCLUSIVE 778 }; 779 780 /** 781 * enum ieee80211_chanctx_replace_state - channel context replacement state 782 * 783 * This is used for channel context in-place reservations that require channel 784 * context switch/swap. 785 * 786 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 787 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 788 * by a (not yet registered) channel context pointed by %replace_ctx. 789 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 790 * replaces an existing channel context pointed to by %replace_ctx. 791 */ 792 enum ieee80211_chanctx_replace_state { 793 IEEE80211_CHANCTX_REPLACE_NONE, 794 IEEE80211_CHANCTX_WILL_BE_REPLACED, 795 IEEE80211_CHANCTX_REPLACES_OTHER, 796 }; 797 798 struct ieee80211_chanctx { 799 struct list_head list; 800 struct rcu_head rcu_head; 801 802 struct list_head assigned_vifs; 803 struct list_head reserved_vifs; 804 805 enum ieee80211_chanctx_replace_state replace_state; 806 struct ieee80211_chanctx *replace_ctx; 807 808 enum ieee80211_chanctx_mode mode; 809 bool driver_present; 810 811 struct ieee80211_chanctx_conf conf; 812 }; 813 814 struct mac80211_qos_map { 815 struct cfg80211_qos_map qos_map; 816 struct rcu_head rcu_head; 817 }; 818 819 enum txq_info_flags { 820 IEEE80211_TXQ_STOP, 821 IEEE80211_TXQ_AMPDU, 822 IEEE80211_TXQ_NO_AMSDU, 823 IEEE80211_TXQ_STOP_NETIF_TX, 824 }; 825 826 /** 827 * struct txq_info - per tid queue 828 * 829 * @tin: contains packets split into multiple flows 830 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 831 * a fq_flow which is already owned by a different tin 832 * @def_cvars: codel vars for @def_flow 833 * @frags: used to keep fragments created after dequeue 834 * @schedule_order: used with ieee80211_local->active_txqs 835 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 836 */ 837 struct txq_info { 838 struct fq_tin tin; 839 struct fq_flow def_flow; 840 struct codel_vars def_cvars; 841 struct codel_stats cstats; 842 struct sk_buff_head frags; 843 struct list_head schedule_order; 844 u16 schedule_round; 845 unsigned long flags; 846 847 /* keep last! */ 848 struct ieee80211_txq txq; 849 }; 850 851 struct ieee80211_if_mntr { 852 u32 flags; 853 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 854 855 struct list_head list; 856 }; 857 858 /** 859 * struct ieee80211_if_nan - NAN state 860 * 861 * @conf: current NAN configuration 862 * @func_ids: a bitmap of available instance_id's 863 */ 864 struct ieee80211_if_nan { 865 struct cfg80211_nan_conf conf; 866 867 /* protects function_inst_ids */ 868 spinlock_t func_lock; 869 struct idr function_inst_ids; 870 }; 871 872 struct ieee80211_sub_if_data { 873 struct list_head list; 874 875 struct wireless_dev wdev; 876 877 /* keys */ 878 struct list_head key_list; 879 880 /* count for keys needing tailroom space allocation */ 881 int crypto_tx_tailroom_needed_cnt; 882 int crypto_tx_tailroom_pending_dec; 883 struct delayed_work dec_tailroom_needed_wk; 884 885 struct net_device *dev; 886 struct ieee80211_local *local; 887 888 unsigned int flags; 889 890 unsigned long state; 891 892 char name[IFNAMSIZ]; 893 894 /* Fragment table for host-based reassembly */ 895 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 896 unsigned int fragment_next; 897 898 /* TID bitmap for NoAck policy */ 899 u16 noack_map; 900 901 /* bit field of ACM bits (BIT(802.1D tag)) */ 902 u8 wmm_acm; 903 904 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + 905 NUM_DEFAULT_MGMT_KEYS + 906 NUM_DEFAULT_BEACON_KEYS]; 907 struct ieee80211_key __rcu *default_unicast_key; 908 struct ieee80211_key __rcu *default_multicast_key; 909 struct ieee80211_key __rcu *default_mgmt_key; 910 struct ieee80211_key __rcu *default_beacon_key; 911 912 u16 sequence_number; 913 __be16 control_port_protocol; 914 bool control_port_no_encrypt; 915 bool control_port_over_nl80211; 916 int encrypt_headroom; 917 918 atomic_t num_tx_queued; 919 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 920 struct mac80211_qos_map __rcu *qos_map; 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 union { 967 struct ieee80211_if_ap ap; 968 struct ieee80211_if_wds wds; 969 struct ieee80211_if_vlan vlan; 970 struct ieee80211_if_managed mgd; 971 struct ieee80211_if_ibss ibss; 972 struct ieee80211_if_mesh mesh; 973 struct ieee80211_if_ocb ocb; 974 struct ieee80211_if_mntr mntr; 975 struct ieee80211_if_nan nan; 976 } u; 977 978 #ifdef CONFIG_MAC80211_DEBUGFS 979 struct { 980 struct dentry *subdir_stations; 981 struct dentry *default_unicast_key; 982 struct dentry *default_multicast_key; 983 struct dentry *default_mgmt_key; 984 struct dentry *default_beacon_key; 985 } debugfs; 986 #endif 987 988 bool hw_80211_encap; 989 990 /* must be last, dynamically sized area in this! */ 991 struct ieee80211_vif vif; 992 }; 993 994 static inline 995 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 996 { 997 return container_of(p, struct ieee80211_sub_if_data, vif); 998 } 999 1000 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1001 __acquires(&sdata->wdev.mtx) 1002 { 1003 mutex_lock(&sdata->wdev.mtx); 1004 __acquire(&sdata->wdev.mtx); 1005 } 1006 1007 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1008 __releases(&sdata->wdev.mtx) 1009 { 1010 mutex_unlock(&sdata->wdev.mtx); 1011 __release(&sdata->wdev.mtx); 1012 } 1013 1014 #define sdata_dereference(p, sdata) \ 1015 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1016 1017 static inline void 1018 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1019 { 1020 lockdep_assert_held(&sdata->wdev.mtx); 1021 } 1022 1023 static inline int 1024 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1025 { 1026 switch (chandef->width) { 1027 case NL80211_CHAN_WIDTH_5: 1028 return 2; 1029 case NL80211_CHAN_WIDTH_10: 1030 return 1; 1031 default: 1032 return 0; 1033 } 1034 } 1035 1036 static inline int 1037 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1038 { 1039 struct ieee80211_chanctx_conf *chanctx_conf; 1040 int shift = 0; 1041 1042 rcu_read_lock(); 1043 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1044 if (chanctx_conf) 1045 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1046 rcu_read_unlock(); 1047 1048 return shift; 1049 } 1050 1051 enum { 1052 IEEE80211_RX_MSG = 1, 1053 IEEE80211_TX_STATUS_MSG = 2, 1054 }; 1055 1056 enum queue_stop_reason { 1057 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1058 IEEE80211_QUEUE_STOP_REASON_PS, 1059 IEEE80211_QUEUE_STOP_REASON_CSA, 1060 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1061 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1062 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1063 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1064 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1065 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1066 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1067 1068 IEEE80211_QUEUE_STOP_REASONS, 1069 }; 1070 1071 #ifdef CONFIG_MAC80211_LEDS 1072 struct tpt_led_trigger { 1073 char name[32]; 1074 const struct ieee80211_tpt_blink *blink_table; 1075 unsigned int blink_table_len; 1076 struct timer_list timer; 1077 struct ieee80211_local *local; 1078 unsigned long prev_traffic; 1079 unsigned long tx_bytes, rx_bytes; 1080 unsigned int active, want; 1081 bool running; 1082 }; 1083 #endif 1084 1085 /** 1086 * mac80211 scan flags - currently active scan mode 1087 * 1088 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1089 * well be on the operating channel 1090 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1091 * determine if we are on the operating channel or not 1092 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1093 * channel. This should not interrupt normal traffic. 1094 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1095 * that the scan completed. 1096 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1097 * a scan complete for an aborted scan. 1098 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1099 * cancelled. 1100 */ 1101 enum { 1102 SCAN_SW_SCANNING, 1103 SCAN_HW_SCANNING, 1104 SCAN_ONCHANNEL_SCANNING, 1105 SCAN_COMPLETED, 1106 SCAN_ABORTED, 1107 SCAN_HW_CANCELLED, 1108 }; 1109 1110 /** 1111 * enum mac80211_scan_state - scan state machine states 1112 * 1113 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1114 * determines if we should keep on scanning or switch back to the 1115 * operating channel 1116 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1117 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1118 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1119 * send out data 1120 * @SCAN_RESUME: Resume the scan and scan the next channel 1121 * @SCAN_ABORT: Abort the scan and go back to operating channel 1122 */ 1123 enum mac80211_scan_state { 1124 SCAN_DECISION, 1125 SCAN_SET_CHANNEL, 1126 SCAN_SEND_PROBE, 1127 SCAN_SUSPEND, 1128 SCAN_RESUME, 1129 SCAN_ABORT, 1130 }; 1131 1132 struct ieee80211_local { 1133 /* embed the driver visible part. 1134 * don't cast (use the static inlines below), but we keep 1135 * it first anyway so they become a no-op */ 1136 struct ieee80211_hw hw; 1137 1138 struct fq fq; 1139 struct codel_vars *cvars; 1140 struct codel_params cparams; 1141 1142 /* protects active_txqs and txqi->schedule_order */ 1143 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1144 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1145 u16 schedule_round[IEEE80211_NUM_ACS]; 1146 1147 u16 airtime_flags; 1148 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1149 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1150 u32 aql_threshold; 1151 atomic_t aql_total_pending_airtime; 1152 1153 const struct ieee80211_ops *ops; 1154 1155 /* 1156 * private workqueue to mac80211. mac80211 makes this accessible 1157 * via ieee80211_queue_work() 1158 */ 1159 struct workqueue_struct *workqueue; 1160 1161 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1162 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1163 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1164 spinlock_t queue_stop_reason_lock; 1165 1166 int open_count; 1167 int monitors, cooked_mntrs; 1168 /* number of interfaces with corresponding FIF_ flags */ 1169 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1170 fif_probe_req; 1171 int probe_req_reg; 1172 unsigned int filter_flags; /* FIF_* */ 1173 1174 bool wiphy_ciphers_allocated; 1175 1176 bool use_chanctx; 1177 1178 /* protects the aggregated multicast list and filter calls */ 1179 spinlock_t filter_lock; 1180 1181 /* used for uploading changed mc list */ 1182 struct work_struct reconfig_filter; 1183 1184 /* aggregated multicast list */ 1185 struct netdev_hw_addr_list mc_list; 1186 1187 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1188 1189 /* 1190 * suspended is true if we finished all the suspend _and_ we have 1191 * not yet come up from resume. This is to be used by mac80211 1192 * to ensure driver sanity during suspend and mac80211's own 1193 * sanity. It can eventually be used for WoW as well. 1194 */ 1195 bool suspended; 1196 1197 /* 1198 * Resuming is true while suspended, but when we're reprogramming the 1199 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1200 * again even though some other parts of the stack are still suspended 1201 * and we still drop received frames to avoid waking the stack. 1202 */ 1203 bool resuming; 1204 1205 /* 1206 * quiescing is true during the suspend process _only_ to 1207 * ease timer cancelling etc. 1208 */ 1209 bool quiescing; 1210 1211 /* device is started */ 1212 bool started; 1213 1214 /* device is during a HW reconfig */ 1215 bool in_reconfig; 1216 1217 /* wowlan is enabled -- don't reconfig on resume */ 1218 bool wowlan; 1219 1220 struct work_struct radar_detected_work; 1221 1222 /* number of RX chains the hardware has */ 1223 u8 rx_chains; 1224 1225 /* bitmap of which sbands were copied */ 1226 u8 sband_allocated; 1227 1228 int tx_headroom; /* required headroom for hardware/radiotap */ 1229 1230 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1231 * added to skb_queue will be processed, but frames in 1232 * skb_queue_unreliable may be dropped if the total length of these 1233 * queues increases over the limit. */ 1234 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1235 struct tasklet_struct tasklet; 1236 struct sk_buff_head skb_queue; 1237 struct sk_buff_head skb_queue_unreliable; 1238 1239 spinlock_t rx_path_lock; 1240 1241 /* Station data */ 1242 /* 1243 * The mutex only protects the list, hash table and 1244 * counter, reads are done with RCU. 1245 */ 1246 struct mutex sta_mtx; 1247 spinlock_t tim_lock; 1248 unsigned long num_sta; 1249 struct list_head sta_list; 1250 struct rhltable sta_hash; 1251 struct timer_list sta_cleanup; 1252 int sta_generation; 1253 1254 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1255 struct tasklet_struct tx_pending_tasklet; 1256 struct tasklet_struct wake_txqs_tasklet; 1257 1258 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1259 1260 /* number of interfaces with allmulti RX */ 1261 atomic_t iff_allmultis; 1262 1263 struct rate_control_ref *rate_ctrl; 1264 1265 struct arc4_ctx wep_tx_ctx; 1266 struct arc4_ctx wep_rx_ctx; 1267 u32 wep_iv; 1268 1269 /* see iface.c */ 1270 struct list_head interfaces; 1271 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1272 struct mutex iflist_mtx; 1273 1274 /* 1275 * Key mutex, protects sdata's key_list and sta_info's 1276 * key pointers and ptk_idx (write access, they're RCU.) 1277 */ 1278 struct mutex key_mtx; 1279 1280 /* mutex for scan and work locking */ 1281 struct mutex mtx; 1282 1283 /* Scanning and BSS list */ 1284 unsigned long scanning; 1285 struct cfg80211_ssid scan_ssid; 1286 struct cfg80211_scan_request *int_scan_req; 1287 struct cfg80211_scan_request __rcu *scan_req; 1288 struct ieee80211_scan_request *hw_scan_req; 1289 struct cfg80211_chan_def scan_chandef; 1290 enum nl80211_band hw_scan_band; 1291 int scan_channel_idx; 1292 int scan_ies_len; 1293 int hw_scan_ies_bufsize; 1294 struct cfg80211_scan_info scan_info; 1295 1296 struct work_struct sched_scan_stopped_work; 1297 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1298 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1299 u8 scan_addr[ETH_ALEN]; 1300 1301 unsigned long leave_oper_channel_time; 1302 enum mac80211_scan_state next_scan_state; 1303 struct delayed_work scan_work; 1304 struct ieee80211_sub_if_data __rcu *scan_sdata; 1305 /* For backward compatibility only -- do not use */ 1306 struct cfg80211_chan_def _oper_chandef; 1307 1308 /* Temporary remain-on-channel for off-channel operations */ 1309 struct ieee80211_channel *tmp_channel; 1310 1311 /* channel contexts */ 1312 struct list_head chanctx_list; 1313 struct mutex chanctx_mtx; 1314 1315 #ifdef CONFIG_MAC80211_LEDS 1316 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1317 struct led_trigger tpt_led; 1318 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1319 atomic_t radio_led_active, tpt_led_active; 1320 struct tpt_led_trigger *tpt_led_trigger; 1321 #endif 1322 1323 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1324 /* SNMP counters */ 1325 /* dot11CountersTable */ 1326 u32 dot11TransmittedFragmentCount; 1327 u32 dot11MulticastTransmittedFrameCount; 1328 u32 dot11FailedCount; 1329 u32 dot11RetryCount; 1330 u32 dot11MultipleRetryCount; 1331 u32 dot11FrameDuplicateCount; 1332 u32 dot11ReceivedFragmentCount; 1333 u32 dot11MulticastReceivedFrameCount; 1334 u32 dot11TransmittedFrameCount; 1335 1336 /* TX/RX handler statistics */ 1337 unsigned int tx_handlers_drop; 1338 unsigned int tx_handlers_queued; 1339 unsigned int tx_handlers_drop_wep; 1340 unsigned int tx_handlers_drop_not_assoc; 1341 unsigned int tx_handlers_drop_unauth_port; 1342 unsigned int rx_handlers_drop; 1343 unsigned int rx_handlers_queued; 1344 unsigned int rx_handlers_drop_nullfunc; 1345 unsigned int rx_handlers_drop_defrag; 1346 unsigned int tx_expand_skb_head; 1347 unsigned int tx_expand_skb_head_cloned; 1348 unsigned int rx_expand_skb_head_defrag; 1349 unsigned int rx_handlers_fragments; 1350 unsigned int tx_status_drop; 1351 #define I802_DEBUG_INC(c) (c)++ 1352 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1353 #define I802_DEBUG_INC(c) do { } while (0) 1354 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1355 1356 1357 int total_ps_buffered; /* total number of all buffered unicast and 1358 * multicast packets for power saving stations 1359 */ 1360 1361 bool pspolling; 1362 bool offchannel_ps_enabled; 1363 /* 1364 * PS can only be enabled when we have exactly one managed 1365 * interface (and monitors) in PS, this then points there. 1366 */ 1367 struct ieee80211_sub_if_data *ps_sdata; 1368 struct work_struct dynamic_ps_enable_work; 1369 struct work_struct dynamic_ps_disable_work; 1370 struct timer_list dynamic_ps_timer; 1371 struct notifier_block ifa_notifier; 1372 struct notifier_block ifa6_notifier; 1373 1374 /* 1375 * The dynamic ps timeout configured from user space via WEXT - 1376 * this will override whatever chosen by mac80211 internally. 1377 */ 1378 int dynamic_ps_forced_timeout; 1379 1380 int user_power_level; /* in dBm, for all interfaces */ 1381 1382 enum ieee80211_smps_mode smps_mode; 1383 1384 struct work_struct restart_work; 1385 1386 #ifdef CONFIG_MAC80211_DEBUGFS 1387 struct local_debugfsdentries { 1388 struct dentry *rcdir; 1389 struct dentry *keys; 1390 } debugfs; 1391 bool force_tx_status; 1392 #endif 1393 1394 /* 1395 * Remain-on-channel support 1396 */ 1397 struct delayed_work roc_work; 1398 struct list_head roc_list; 1399 struct work_struct hw_roc_start, hw_roc_done; 1400 unsigned long hw_roc_start_time; 1401 u64 roc_cookie_counter; 1402 1403 struct idr ack_status_frames; 1404 spinlock_t ack_status_lock; 1405 1406 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1407 1408 /* virtual monitor interface */ 1409 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1410 struct cfg80211_chan_def monitor_chandef; 1411 1412 /* extended capabilities provided by mac80211 */ 1413 u8 ext_capa[8]; 1414 1415 /* TDLS channel switch */ 1416 struct work_struct tdls_chsw_work; 1417 struct sk_buff_head skb_queue_tdls_chsw; 1418 }; 1419 1420 static inline struct ieee80211_sub_if_data * 1421 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1422 { 1423 return netdev_priv(dev); 1424 } 1425 1426 static inline struct ieee80211_sub_if_data * 1427 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1428 { 1429 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1430 } 1431 1432 static inline struct ieee80211_supported_band * 1433 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1434 { 1435 struct ieee80211_local *local = sdata->local; 1436 struct ieee80211_chanctx_conf *chanctx_conf; 1437 enum nl80211_band band; 1438 1439 rcu_read_lock(); 1440 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1441 1442 if (WARN_ON_ONCE(!chanctx_conf)) { 1443 rcu_read_unlock(); 1444 return NULL; 1445 } 1446 1447 band = chanctx_conf->def.chan->band; 1448 rcu_read_unlock(); 1449 1450 return local->hw.wiphy->bands[band]; 1451 } 1452 1453 /* this struct holds the value parsing from channel switch IE */ 1454 struct ieee80211_csa_ie { 1455 struct cfg80211_chan_def chandef; 1456 u8 mode; 1457 u8 count; 1458 u8 ttl; 1459 u16 pre_value; 1460 u16 reason_code; 1461 u32 max_switch_time; 1462 }; 1463 1464 /* Parsed Information Elements */ 1465 struct ieee802_11_elems { 1466 const u8 *ie_start; 1467 size_t total_len; 1468 1469 /* pointers to IEs */ 1470 const struct ieee80211_tdls_lnkie *lnk_id; 1471 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1472 const u8 *ext_capab; 1473 const u8 *ssid; 1474 const u8 *supp_rates; 1475 const u8 *ds_params; 1476 const struct ieee80211_tim_ie *tim; 1477 const u8 *challenge; 1478 const u8 *rsn; 1479 const u8 *rsnx; 1480 const u8 *erp_info; 1481 const u8 *ext_supp_rates; 1482 const u8 *wmm_info; 1483 const u8 *wmm_param; 1484 const struct ieee80211_ht_cap *ht_cap_elem; 1485 const struct ieee80211_ht_operation *ht_operation; 1486 const struct ieee80211_vht_cap *vht_cap_elem; 1487 const struct ieee80211_vht_operation *vht_operation; 1488 const struct ieee80211_meshconf_ie *mesh_config; 1489 const u8 *he_cap; 1490 const struct ieee80211_he_operation *he_operation; 1491 const struct ieee80211_he_spr *he_spr; 1492 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1493 const u8 *uora_element; 1494 const u8 *mesh_id; 1495 const u8 *peering; 1496 const __le16 *awake_window; 1497 const u8 *preq; 1498 const u8 *prep; 1499 const u8 *perr; 1500 const struct ieee80211_rann_ie *rann; 1501 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1502 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1503 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1504 const u8 *max_channel_switch_time; 1505 const u8 *country_elem; 1506 const u8 *pwr_constr_elem; 1507 const u8 *cisco_dtpc_elem; 1508 const struct ieee80211_timeout_interval_ie *timeout_int; 1509 const u8 *opmode_notif; 1510 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1511 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1512 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1513 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1514 const struct ieee80211_bssid_index *bssid_index; 1515 u8 max_bssid_indicator; 1516 u8 dtim_count; 1517 u8 dtim_period; 1518 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1519 1520 /* length of them, respectively */ 1521 u8 ext_capab_len; 1522 u8 ssid_len; 1523 u8 supp_rates_len; 1524 u8 tim_len; 1525 u8 challenge_len; 1526 u8 rsn_len; 1527 u8 rsnx_len; 1528 u8 ext_supp_rates_len; 1529 u8 wmm_info_len; 1530 u8 wmm_param_len; 1531 u8 he_cap_len; 1532 u8 mesh_id_len; 1533 u8 peering_len; 1534 u8 preq_len; 1535 u8 prep_len; 1536 u8 perr_len; 1537 u8 country_elem_len; 1538 u8 bssid_index_len; 1539 1540 /* whether a parse error occurred while retrieving these elements */ 1541 bool parse_error; 1542 }; 1543 1544 static inline struct ieee80211_local *hw_to_local( 1545 struct ieee80211_hw *hw) 1546 { 1547 return container_of(hw, struct ieee80211_local, hw); 1548 } 1549 1550 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1551 { 1552 return container_of(txq, struct txq_info, txq); 1553 } 1554 1555 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1556 { 1557 struct txq_info *txqi = to_txq_info(txq); 1558 1559 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1560 } 1561 1562 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1563 { 1564 return ether_addr_equal(raddr, addr) || 1565 is_broadcast_ether_addr(raddr); 1566 } 1567 1568 static inline bool 1569 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1570 { 1571 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1572 status->flag & RX_FLAG_MACTIME_END); 1573 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1574 return true; 1575 /* can't handle non-legacy preamble yet */ 1576 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1577 status->encoding == RX_ENC_LEGACY) 1578 return true; 1579 return false; 1580 } 1581 1582 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1583 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1584 1585 /* This function returns the number of multicast stations connected to this 1586 * interface. It returns -1 if that number is not tracked, that is for netdevs 1587 * not in AP or AP_VLAN mode or when using 4addr. 1588 */ 1589 static inline int 1590 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1591 { 1592 if (sdata->vif.type == NL80211_IFTYPE_AP) 1593 return atomic_read(&sdata->u.ap.num_mcast_sta); 1594 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1595 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1596 return -1; 1597 } 1598 1599 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1600 struct ieee80211_rx_status *status, 1601 unsigned int mpdu_len, 1602 unsigned int mpdu_offset); 1603 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1604 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1605 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1606 u32 changed); 1607 void ieee80211_configure_filter(struct ieee80211_local *local); 1608 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1609 1610 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1611 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1612 u64 *cookie, gfp_t gfp); 1613 1614 void ieee80211_check_fast_rx(struct sta_info *sta); 1615 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1616 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1617 void ieee80211_clear_fast_rx(struct sta_info *sta); 1618 1619 /* STA code */ 1620 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1621 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1622 struct cfg80211_auth_request *req); 1623 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1624 struct cfg80211_assoc_request *req); 1625 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1626 struct cfg80211_deauth_request *req); 1627 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1628 struct cfg80211_disassoc_request *req); 1629 void ieee80211_send_pspoll(struct ieee80211_local *local, 1630 struct ieee80211_sub_if_data *sdata); 1631 void ieee80211_recalc_ps(struct ieee80211_local *local); 1632 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1633 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1634 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1635 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1636 struct sk_buff *skb); 1637 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1638 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1639 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1640 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1641 __le16 fc, bool acked); 1642 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1643 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1644 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1645 1646 /* IBSS code */ 1647 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1648 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1649 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1650 const u8 *bssid, const u8 *addr, u32 supp_rates); 1651 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1652 struct cfg80211_ibss_params *params); 1653 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1654 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1655 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1656 struct sk_buff *skb); 1657 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1658 struct cfg80211_csa_settings *csa_settings); 1659 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1660 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1661 1662 /* OCB code */ 1663 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1664 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1665 const u8 *bssid, const u8 *addr, u32 supp_rates); 1666 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1667 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1668 struct ocb_setup *setup); 1669 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1670 1671 /* mesh code */ 1672 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1673 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1674 struct sk_buff *skb); 1675 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1676 struct cfg80211_csa_settings *csa_settings); 1677 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1678 1679 /* scan/BSS handling */ 1680 void ieee80211_scan_work(struct work_struct *work); 1681 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1682 const u8 *ssid, u8 ssid_len, 1683 struct ieee80211_channel **channels, 1684 unsigned int n_channels, 1685 enum nl80211_bss_scan_width scan_width); 1686 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1687 struct cfg80211_scan_request *req); 1688 void ieee80211_scan_cancel(struct ieee80211_local *local); 1689 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1690 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1691 1692 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1693 struct ieee80211_bss * 1694 ieee80211_bss_info_update(struct ieee80211_local *local, 1695 struct ieee80211_rx_status *rx_status, 1696 struct ieee80211_mgmt *mgmt, 1697 size_t len, 1698 struct ieee80211_channel *channel); 1699 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1700 struct ieee80211_bss *bss); 1701 1702 /* scheduled scan handling */ 1703 int 1704 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1705 struct cfg80211_sched_scan_request *req); 1706 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1707 struct cfg80211_sched_scan_request *req); 1708 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1709 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1710 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1711 1712 /* off-channel/mgmt-tx */ 1713 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1714 void ieee80211_offchannel_return(struct ieee80211_local *local); 1715 void ieee80211_roc_setup(struct ieee80211_local *local); 1716 void ieee80211_start_next_roc(struct ieee80211_local *local); 1717 void ieee80211_roc_purge(struct ieee80211_local *local, 1718 struct ieee80211_sub_if_data *sdata); 1719 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1720 struct ieee80211_channel *chan, 1721 unsigned int duration, u64 *cookie); 1722 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1723 struct wireless_dev *wdev, u64 cookie); 1724 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1725 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1726 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1727 struct wireless_dev *wdev, u64 cookie); 1728 1729 /* channel switch handling */ 1730 void ieee80211_csa_finalize_work(struct work_struct *work); 1731 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1732 struct cfg80211_csa_settings *params); 1733 1734 /* interface handling */ 1735 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1736 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1737 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1738 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1739 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1740 MAC80211_SUPPORTED_FEATURES_RX) 1741 1742 int ieee80211_iface_init(void); 1743 void ieee80211_iface_exit(void); 1744 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1745 unsigned char name_assign_type, 1746 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1747 struct vif_params *params); 1748 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1749 enum nl80211_iftype type); 1750 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1751 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1752 u32 ieee80211_idle_off(struct ieee80211_local *local); 1753 void ieee80211_recalc_idle(struct ieee80211_local *local); 1754 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1755 const int offset); 1756 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1757 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1758 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1759 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1760 1761 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1762 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1763 bool update_bss); 1764 1765 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1766 { 1767 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1768 } 1769 1770 /* tx handling */ 1771 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1772 void ieee80211_tx_pending(unsigned long data); 1773 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1774 struct net_device *dev); 1775 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1776 struct net_device *dev); 1777 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1778 struct net_device *dev); 1779 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1780 struct net_device *dev, 1781 u32 info_flags, 1782 u32 ctrl_flags); 1783 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1784 struct sk_buff_head *skbs); 1785 struct sk_buff * 1786 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1787 struct sk_buff *skb, u32 info_flags); 1788 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1789 struct ieee80211_supported_band *sband, 1790 int retry_count, int shift, bool send_to_cooked, 1791 struct ieee80211_tx_status *status); 1792 1793 void ieee80211_check_fast_xmit(struct sta_info *sta); 1794 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1795 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1796 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1797 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1798 const u8 *buf, size_t len, 1799 const u8 *dest, __be16 proto, bool unencrypted); 1800 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1801 const u8 *buf, size_t len); 1802 1803 /* HT */ 1804 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1805 struct ieee80211_sta_ht_cap *ht_cap); 1806 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1807 struct ieee80211_supported_band *sband, 1808 const struct ieee80211_ht_cap *ht_cap_ie, 1809 struct sta_info *sta); 1810 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1811 const u8 *da, u16 tid, 1812 u16 initiator, u16 reason_code); 1813 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1814 enum ieee80211_smps_mode smps, const u8 *da, 1815 const u8 *bssid); 1816 void ieee80211_request_smps_ap_work(struct work_struct *work); 1817 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1818 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1819 enum ieee80211_smps_mode smps_mode_new); 1820 1821 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1822 u16 initiator, u16 reason, bool stop); 1823 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1824 u16 initiator, u16 reason, bool stop); 1825 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1826 u8 dialog_token, u16 timeout, 1827 u16 start_seq_num, u16 ba_policy, u16 tid, 1828 u16 buf_size, bool tx, bool auto_seq, 1829 const struct ieee80211_addba_ext_ie *addbaext); 1830 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1831 enum ieee80211_agg_stop_reason reason); 1832 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1833 struct sta_info *sta, 1834 struct ieee80211_mgmt *mgmt, size_t len); 1835 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1836 struct sta_info *sta, 1837 struct ieee80211_mgmt *mgmt, 1838 size_t len); 1839 void ieee80211_process_addba_request(struct ieee80211_local *local, 1840 struct sta_info *sta, 1841 struct ieee80211_mgmt *mgmt, 1842 size_t len); 1843 1844 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1845 enum ieee80211_agg_stop_reason reason); 1846 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1847 enum ieee80211_agg_stop_reason reason); 1848 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1849 struct tid_ampdu_tx *tid_tx); 1850 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1851 struct tid_ampdu_tx *tid_tx); 1852 void ieee80211_ba_session_work(struct work_struct *work); 1853 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1854 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1855 1856 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1857 enum nl80211_smps_mode 1858 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1859 1860 /* VHT */ 1861 void 1862 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1863 struct ieee80211_supported_band *sband, 1864 const struct ieee80211_vht_cap *vht_cap_ie, 1865 struct sta_info *sta); 1866 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1867 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1868 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1869 enum ieee80211_sta_rx_bandwidth 1870 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1871 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1872 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1873 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1874 struct ieee80211_mgmt *mgmt); 1875 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1876 struct sta_info *sta, u8 opmode, 1877 enum nl80211_band band); 1878 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1879 struct sta_info *sta, u8 opmode, 1880 enum nl80211_band band); 1881 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1882 struct ieee80211_sta_vht_cap *vht_cap); 1883 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1884 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1885 enum nl80211_chan_width 1886 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1887 1888 /* HE */ 1889 void 1890 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1891 struct ieee80211_supported_band *sband, 1892 const u8 *he_cap_ie, u8 he_cap_len, 1893 struct sta_info *sta); 1894 void 1895 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 1896 const struct ieee80211_he_spr *he_spr_ie_elem); 1897 1898 void 1899 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 1900 const struct ieee80211_he_operation *he_op_ie_elem); 1901 1902 /* Spectrum management */ 1903 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1904 struct ieee80211_mgmt *mgmt, 1905 size_t len); 1906 /** 1907 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1908 * @sdata: the sdata of the interface which has received the frame 1909 * @elems: parsed 802.11 elements received with the frame 1910 * @current_band: indicates the current band 1911 * @sta_flags: contains information about own capabilities and restrictions 1912 * to decide which channel switch announcements can be accepted. Only the 1913 * following subset of &enum ieee80211_sta_flags are evaluated: 1914 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1915 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1916 * %IEEE80211_STA_DISABLE_160MHZ. 1917 * @bssid: the currently connected bssid (for reporting) 1918 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1919 All of them will be filled with if success only. 1920 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1921 */ 1922 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1923 struct ieee802_11_elems *elems, 1924 enum nl80211_band current_band, 1925 u32 sta_flags, u8 *bssid, 1926 struct ieee80211_csa_ie *csa_ie); 1927 1928 /* Suspend/resume and hw reconfiguration */ 1929 int ieee80211_reconfig(struct ieee80211_local *local); 1930 void ieee80211_stop_device(struct ieee80211_local *local); 1931 1932 int __ieee80211_suspend(struct ieee80211_hw *hw, 1933 struct cfg80211_wowlan *wowlan); 1934 1935 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1936 { 1937 struct ieee80211_local *local = hw_to_local(hw); 1938 1939 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1940 !test_bit(SCAN_COMPLETED, &local->scanning), 1941 "%s: resume with hardware scan still in progress\n", 1942 wiphy_name(hw->wiphy)); 1943 1944 return ieee80211_reconfig(hw_to_local(hw)); 1945 } 1946 1947 /* utility functions/constants */ 1948 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1949 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1950 int rate, int erp, int short_preamble, 1951 int shift); 1952 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1953 struct ieee80211_tx_queue_params *qparam, 1954 int ac); 1955 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1956 bool bss_notify, bool enable_qos); 1957 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1958 struct sta_info *sta, struct sk_buff *skb, 1959 u32 txdata_flags); 1960 1961 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1962 struct sk_buff *skb, int tid, 1963 enum nl80211_band band, u32 txdata_flags); 1964 1965 /* sta_out needs to be checked for ERR_PTR() before using */ 1966 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 1967 struct sk_buff *skb, 1968 struct sta_info **sta_out); 1969 1970 static inline void 1971 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1972 struct sk_buff *skb, int tid, 1973 enum nl80211_band band, u32 txdata_flags) 1974 { 1975 rcu_read_lock(); 1976 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags); 1977 rcu_read_unlock(); 1978 } 1979 1980 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1981 struct sk_buff *skb, int tid) 1982 { 1983 struct ieee80211_chanctx_conf *chanctx_conf; 1984 1985 rcu_read_lock(); 1986 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1987 if (WARN_ON(!chanctx_conf)) { 1988 rcu_read_unlock(); 1989 kfree_skb(skb); 1990 return; 1991 } 1992 1993 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1994 chanctx_conf->def.chan->band, 0); 1995 rcu_read_unlock(); 1996 } 1997 1998 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1999 struct sk_buff *skb) 2000 { 2001 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2002 ieee80211_tx_skb_tid(sdata, skb, 7); 2003 } 2004 2005 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2006 struct ieee802_11_elems *elems, 2007 u64 filter, u32 crc, u8 *transmitter_bssid, 2008 u8 *bss_bssid); 2009 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 2010 bool action, 2011 struct ieee802_11_elems *elems, 2012 u8 *transmitter_bssid, 2013 u8 *bss_bssid) 2014 { 2015 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0, 2016 transmitter_bssid, bss_bssid); 2017 } 2018 2019 2020 extern const int ieee802_1d_to_ac[8]; 2021 2022 static inline int ieee80211_ac_from_tid(int tid) 2023 { 2024 return ieee802_1d_to_ac[tid & 7]; 2025 } 2026 2027 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2028 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2029 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2030 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2031 struct ieee80211_sub_if_data *sdata, 2032 bool powersave); 2033 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 2034 struct ieee80211_hdr *hdr); 2035 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2036 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2037 2038 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2039 unsigned long queues, 2040 enum queue_stop_reason reason, 2041 bool refcounted); 2042 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2043 struct ieee80211_sub_if_data *sdata, 2044 enum queue_stop_reason reason); 2045 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2046 struct ieee80211_sub_if_data *sdata, 2047 enum queue_stop_reason reason); 2048 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2049 unsigned long queues, 2050 enum queue_stop_reason reason, 2051 bool refcounted); 2052 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2053 enum queue_stop_reason reason, 2054 bool refcounted); 2055 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2056 enum queue_stop_reason reason, 2057 bool refcounted); 2058 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2059 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2060 struct sk_buff *skb); 2061 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2062 struct sk_buff_head *skbs); 2063 void ieee80211_flush_queues(struct ieee80211_local *local, 2064 struct ieee80211_sub_if_data *sdata, bool drop); 2065 void __ieee80211_flush_queues(struct ieee80211_local *local, 2066 struct ieee80211_sub_if_data *sdata, 2067 unsigned int queues, bool drop); 2068 2069 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2070 { 2071 /* 2072 * It's unsafe to try to do any work during reconfigure flow. 2073 * When the flow ends the work will be requeued. 2074 */ 2075 if (local->in_reconfig) 2076 return false; 2077 2078 /* 2079 * If quiescing is set, we are racing with __ieee80211_suspend. 2080 * __ieee80211_suspend flushes the workers after setting quiescing, 2081 * and we check quiescing / suspended before enqueing new workers. 2082 * We should abort the worker to avoid the races below. 2083 */ 2084 if (local->quiescing) 2085 return false; 2086 2087 /* 2088 * We might already be suspended if the following scenario occurs: 2089 * __ieee80211_suspend Control path 2090 * 2091 * if (local->quiescing) 2092 * return; 2093 * local->quiescing = true; 2094 * flush_workqueue(); 2095 * queue_work(...); 2096 * local->suspended = true; 2097 * local->quiescing = false; 2098 * worker starts running... 2099 */ 2100 if (local->suspended) 2101 return false; 2102 2103 return true; 2104 } 2105 2106 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2107 void ieee80211_txq_set_params(struct ieee80211_local *local); 2108 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2109 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2110 struct sta_info *sta, 2111 struct txq_info *txq, int tid); 2112 void ieee80211_txq_purge(struct ieee80211_local *local, 2113 struct txq_info *txqi); 2114 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2115 struct ieee80211_sub_if_data *sdata); 2116 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2117 struct txq_info *txqi); 2118 void ieee80211_wake_txqs(unsigned long data); 2119 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2120 u16 transaction, u16 auth_alg, u16 status, 2121 const u8 *extra, size_t extra_len, const u8 *bssid, 2122 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2123 u32 tx_flags); 2124 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2125 const u8 *da, const u8 *bssid, 2126 u16 stype, u16 reason, 2127 bool send_frame, u8 *frame_buf); 2128 2129 enum { 2130 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2131 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2132 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2133 }; 2134 2135 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2136 size_t buffer_len, 2137 struct ieee80211_scan_ies *ie_desc, 2138 const u8 *ie, size_t ie_len, 2139 u8 bands_used, u32 *rate_masks, 2140 struct cfg80211_chan_def *chandef, 2141 u32 flags); 2142 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2143 const u8 *src, const u8 *dst, 2144 u32 ratemask, 2145 struct ieee80211_channel *chan, 2146 const u8 *ssid, size_t ssid_len, 2147 const u8 *ie, size_t ie_len, 2148 u32 flags); 2149 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2150 struct ieee802_11_elems *elems, 2151 enum nl80211_band band, u32 *basic_rates); 2152 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2153 enum ieee80211_smps_mode smps_mode); 2154 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2155 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2156 2157 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2158 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2159 u16 cap); 2160 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2161 const struct cfg80211_chan_def *chandef, 2162 u16 prot_mode, bool rifs_mode); 2163 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2164 const struct cfg80211_chan_def *chandef); 2165 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2166 u32 cap); 2167 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2168 const struct cfg80211_chan_def *chandef); 2169 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2170 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2171 const struct ieee80211_sta_he_cap *he_cap, 2172 u8 *end); 2173 u8 *ieee80211_ie_build_he_oper(u8 *pos); 2174 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2175 const struct ieee80211_supported_band *sband, 2176 const u8 *srates, int srates_len, u32 *rates); 2177 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2178 struct sk_buff *skb, bool need_basic, 2179 enum nl80211_band band); 2180 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2181 struct sk_buff *skb, bool need_basic, 2182 enum nl80211_band band); 2183 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2184 2185 /* channel management */ 2186 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2187 struct cfg80211_chan_def *chandef); 2188 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, 2189 const struct ieee80211_vht_operation *oper, 2190 const struct ieee80211_ht_operation *htop, 2191 struct cfg80211_chan_def *chandef); 2192 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2193 2194 int __must_check 2195 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2196 const struct cfg80211_chan_def *chandef, 2197 enum ieee80211_chanctx_mode mode); 2198 int __must_check 2199 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2200 const struct cfg80211_chan_def *chandef, 2201 enum ieee80211_chanctx_mode mode, 2202 bool radar_required); 2203 int __must_check 2204 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2205 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2206 2207 int __must_check 2208 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2209 const struct cfg80211_chan_def *chandef, 2210 u32 *changed); 2211 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2212 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2213 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2214 bool clear); 2215 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2216 struct ieee80211_chanctx *ctx); 2217 2218 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2219 struct ieee80211_chanctx *chanctx); 2220 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2221 struct ieee80211_chanctx *ctx); 2222 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2223 2224 void ieee80211_dfs_cac_timer(unsigned long data); 2225 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2226 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2227 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2228 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2229 struct cfg80211_csa_settings *csa_settings); 2230 2231 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2232 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2233 const struct ieee80211_cipher_scheme * 2234 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2235 enum nl80211_iftype iftype); 2236 int ieee80211_cs_headroom(struct ieee80211_local *local, 2237 struct cfg80211_crypto_settings *crypto, 2238 enum nl80211_iftype iftype); 2239 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2240 struct ieee80211_sub_if_data *sdata); 2241 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2242 const struct cfg80211_chan_def *chandef, 2243 enum ieee80211_chanctx_mode chanmode, 2244 u8 radar_detect); 2245 int ieee80211_max_num_channels(struct ieee80211_local *local); 2246 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2247 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2248 struct ieee80211_chanctx *ctx); 2249 2250 /* TDLS */ 2251 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2252 const u8 *peer, u8 action_code, u8 dialog_token, 2253 u16 status_code, u32 peer_capability, 2254 bool initiator, const u8 *extra_ies, 2255 size_t extra_ies_len); 2256 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2257 const u8 *peer, enum nl80211_tdls_operation oper); 2258 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2259 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2260 const u8 *addr, u8 oper_class, 2261 struct cfg80211_chan_def *chandef); 2262 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2263 struct net_device *dev, 2264 const u8 *addr); 2265 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2266 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2267 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2268 const u8 *peer, u16 reason); 2269 const char *ieee80211_get_reason_code_string(u16 reason_code); 2270 2271 extern const struct ethtool_ops ieee80211_ethtool_ops; 2272 2273 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2274 struct ieee80211_vif *vif, 2275 struct ieee80211_sta *pubsta, 2276 int len); 2277 #ifdef CONFIG_MAC80211_NOINLINE 2278 #define debug_noinline noinline 2279 #else 2280 #define debug_noinline 2281 #endif 2282 2283 #endif /* IEEE80211_I_H */ 2284