1/* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13#ifndef IEEE80211_I_H 14#define IEEE80211_I_H 15 16#include <linux/kernel.h> 17#include <linux/device.h> 18#include <linux/if_ether.h> 19#include <linux/interrupt.h> 20#include <linux/list.h> 21#include <linux/netdevice.h> 22#include <linux/skbuff.h> 23#include <linux/workqueue.h> 24#include <linux/types.h> 25#include <linux/spinlock.h> 26#include <linux/etherdevice.h> 27#include <linux/leds.h> 28#include <linux/idr.h> 29#include <linux/rhashtable.h> 30#include <net/ieee80211_radiotap.h> 31#include <net/cfg80211.h> 32#include <net/mac80211.h> 33#include "key.h" 34#include "sta_info.h" 35#include "debug.h" 36 37struct ieee80211_local; 38 39/* Maximum number of broadcast/multicast frames to buffer when some of the 40 * associated stations are using power saving. */ 41#define AP_MAX_BC_BUFFER 128 42 43/* Maximum number of frames buffered to all STAs, including multicast frames. 44 * Note: increasing this limit increases the potential memory requirement. Each 45 * frame can be up to about 2 kB long. */ 46#define TOTAL_MAX_TX_BUFFER 512 47 48/* Required encryption head and tailroom */ 49#define IEEE80211_ENCRYPT_HEADROOM 8 50#define IEEE80211_ENCRYPT_TAILROOM 18 51 52/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 53 * reception of at least three fragmented frames. This limit can be increased 54 * by changing this define, at the cost of slower frame reassembly and 55 * increased memory use (about 2 kB of RAM per entry). */ 56#define IEEE80211_FRAGMENT_MAX 4 57 58/* power level hasn't been configured (or set to automatic) */ 59#define IEEE80211_UNSET_POWER_LEVEL INT_MIN 60 61/* 62 * Some APs experience problems when working with U-APSD. Decreasing the 63 * probability of that happening by using legacy mode for all ACs but VO isn't 64 * enough. 65 * 66 * Cisco 4410N originally forced us to enable VO by default only because it 67 * treated non-VO ACs as legacy. 68 * 69 * However some APs (notably Netgear R7000) silently reclassify packets to 70 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 71 * clients would never see some frames (e.g. ARP responses) or would fetch them 72 * accidentally after a long time. 73 * 74 * It makes little sense to enable u-APSD queues by default because it needs 75 * userspace applications to be aware of it to actually take advantage of the 76 * possible additional powersavings. Implicitly depending on driver autotrigger 77 * frame support doesn't make much sense. 78 */ 79#define IEEE80211_DEFAULT_UAPSD_QUEUES 0 80 81#define IEEE80211_DEFAULT_MAX_SP_LEN \ 82 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 83 84#define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 85 86struct ieee80211_fragment_entry { 87 unsigned long first_frag_time; 88 unsigned int seq; 89 unsigned int rx_queue; 90 unsigned int last_frag; 91 unsigned int extra_len; 92 struct sk_buff_head skb_list; 93 bool check_sequential_pn; /* needed for CCMP/GCMP */ 94 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 95}; 96 97 98struct ieee80211_bss { 99 u32 device_ts_beacon, device_ts_presp; 100 101 bool wmm_used; 102 bool uapsd_supported; 103 104#define IEEE80211_MAX_SUPP_RATES 32 105 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 106 size_t supp_rates_len; 107 struct ieee80211_rate *beacon_rate; 108 109 /* 110 * During association, we save an ERP value from a probe response so 111 * that we can feed ERP info to the driver when handling the 112 * association completes. these fields probably won't be up-to-date 113 * otherwise, you probably don't want to use them. 114 */ 115 bool has_erp_value; 116 u8 erp_value; 117 118 /* Keep track of the corruption of the last beacon/probe response. */ 119 u8 corrupt_data; 120 121 /* Keep track of what bits of information we have valid info for. */ 122 u8 valid_data; 123}; 124 125/** 126 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 127 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 128 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 129 * 130 * These are bss flags that are attached to a bss in the 131 * @corrupt_data field of &struct ieee80211_bss. 132 */ 133enum ieee80211_bss_corrupt_data_flags { 134 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 135 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 136}; 137 138/** 139 * enum ieee80211_valid_data_flags - BSS valid data flags 140 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 142 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 143 * 144 * These are bss flags that are attached to a bss in the 145 * @valid_data field of &struct ieee80211_bss. They show which parts 146 * of the data structure were received as a result of an un-corrupted 147 * beacon/probe response. 148 */ 149enum ieee80211_bss_valid_data_flags { 150 IEEE80211_BSS_VALID_WMM = BIT(1), 151 IEEE80211_BSS_VALID_RATES = BIT(2), 152 IEEE80211_BSS_VALID_ERP = BIT(3) 153}; 154 155typedef unsigned __bitwise__ ieee80211_tx_result; 156#define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 157#define TX_DROP ((__force ieee80211_tx_result) 1u) 158#define TX_QUEUED ((__force ieee80211_tx_result) 2u) 159 160#define IEEE80211_TX_UNICAST BIT(1) 161#define IEEE80211_TX_PS_BUFFERED BIT(2) 162 163struct ieee80211_tx_data { 164 struct sk_buff *skb; 165 struct sk_buff_head skbs; 166 struct ieee80211_local *local; 167 struct ieee80211_sub_if_data *sdata; 168 struct sta_info *sta; 169 struct ieee80211_key *key; 170 struct ieee80211_tx_rate rate; 171 172 unsigned int flags; 173}; 174 175 176typedef unsigned __bitwise__ ieee80211_rx_result; 177#define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 178#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 179#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 180#define RX_QUEUED ((__force ieee80211_rx_result) 3u) 181 182/** 183 * enum ieee80211_packet_rx_flags - packet RX flags 184 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 185 * (incl. multicast frames) 186 * @IEEE80211_RX_FRAGMENTED: fragmented frame 187 * @IEEE80211_RX_AMSDU: a-MSDU packet 188 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 189 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 190 * 191 * These are per-frame flags that are attached to a frame in the 192 * @rx_flags field of &struct ieee80211_rx_status. 193 */ 194enum ieee80211_packet_rx_flags { 195 IEEE80211_RX_RA_MATCH = BIT(1), 196 IEEE80211_RX_FRAGMENTED = BIT(2), 197 IEEE80211_RX_AMSDU = BIT(3), 198 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 199 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 200}; 201 202/** 203 * enum ieee80211_rx_flags - RX data flags 204 * 205 * @IEEE80211_RX_CMNTR: received on cooked monitor already 206 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 207 * to cfg80211_report_obss_beacon(). 208 * @IEEE80211_RX_REORDER_TIMER: this frame is released by the 209 * reorder buffer timeout timer, not the normal RX path 210 * 211 * These flags are used across handling multiple interfaces 212 * for a single frame. 213 */ 214enum ieee80211_rx_flags { 215 IEEE80211_RX_CMNTR = BIT(0), 216 IEEE80211_RX_BEACON_REPORTED = BIT(1), 217 IEEE80211_RX_REORDER_TIMER = BIT(2), 218}; 219 220struct ieee80211_rx_data { 221 struct sk_buff *skb; 222 struct ieee80211_local *local; 223 struct ieee80211_sub_if_data *sdata; 224 struct sta_info *sta; 225 struct ieee80211_key *key; 226 227 unsigned int flags; 228 229 /* 230 * Index into sequence numbers array, 0..16 231 * since the last (16) is used for non-QoS, 232 * will be 16 on non-QoS frames. 233 */ 234 int seqno_idx; 235 236 /* 237 * Index into the security IV/PN arrays, 0..16 238 * since the last (16) is used for CCMP-encrypted 239 * management frames, will be set to 16 on mgmt 240 * frames and 0 on non-QoS frames. 241 */ 242 int security_idx; 243 244 u32 tkip_iv32; 245 u16 tkip_iv16; 246}; 247 248struct ieee80211_csa_settings { 249 const u16 *counter_offsets_beacon; 250 const u16 *counter_offsets_presp; 251 252 int n_counter_offsets_beacon; 253 int n_counter_offsets_presp; 254 255 u8 count; 256}; 257 258struct beacon_data { 259 u8 *head, *tail; 260 int head_len, tail_len; 261 struct ieee80211_meshconf_ie *meshconf; 262 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 263 u8 csa_current_counter; 264 struct rcu_head rcu_head; 265}; 266 267struct probe_resp { 268 struct rcu_head rcu_head; 269 int len; 270 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 271 u8 data[0]; 272}; 273 274struct ps_data { 275 /* yes, this looks ugly, but guarantees that we can later use 276 * bitmap_empty :) 277 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 278 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 279 __aligned(__alignof__(unsigned long)); 280 struct sk_buff_head bc_buf; 281 atomic_t num_sta_ps; /* number of stations in PS mode */ 282 int dtim_count; 283 bool dtim_bc_mc; 284}; 285 286struct ieee80211_if_ap { 287 struct beacon_data __rcu *beacon; 288 struct probe_resp __rcu *probe_resp; 289 290 /* to be used after channel switch. */ 291 struct cfg80211_beacon_data *next_beacon; 292 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 293 294 struct ps_data ps; 295 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 296 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 297 driver_smps_mode; /* smps mode request */ 298 299 struct work_struct request_smps_work; 300}; 301 302struct ieee80211_if_wds { 303 struct sta_info *sta; 304 u8 remote_addr[ETH_ALEN]; 305}; 306 307struct ieee80211_if_vlan { 308 struct list_head list; /* write-protected with RTNL and local->mtx */ 309 310 /* used for all tx if the VLAN is configured to 4-addr mode */ 311 struct sta_info __rcu *sta; 312}; 313 314struct mesh_stats { 315 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 316 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 317 __u32 fwded_frames; /* Mesh total forwarded frames */ 318 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 319 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 320 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 321}; 322 323#define PREQ_Q_F_START 0x1 324#define PREQ_Q_F_REFRESH 0x2 325struct mesh_preq_queue { 326 struct list_head list; 327 u8 dst[ETH_ALEN]; 328 u8 flags; 329}; 330 331struct ieee80211_roc_work { 332 struct list_head list; 333 struct list_head dependents; 334 335 struct delayed_work work; 336 337 struct ieee80211_sub_if_data *sdata; 338 339 struct ieee80211_channel *chan; 340 341 bool started, abort, hw_begun, notified; 342 bool to_be_freed; 343 bool on_channel; 344 345 unsigned long hw_start_time; 346 347 u32 duration, req_duration; 348 struct sk_buff *frame; 349 u64 cookie, mgmt_tx_cookie; 350 enum ieee80211_roc_type type; 351}; 352 353/* flags used in struct ieee80211_if_managed.flags */ 354enum ieee80211_sta_flags { 355 IEEE80211_STA_CONNECTION_POLL = BIT(1), 356 IEEE80211_STA_CONTROL_PORT = BIT(2), 357 IEEE80211_STA_DISABLE_HT = BIT(4), 358 IEEE80211_STA_MFP_ENABLED = BIT(6), 359 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 360 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 361 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 362 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 363 IEEE80211_STA_DISABLE_VHT = BIT(11), 364 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 365 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 366 IEEE80211_STA_DISABLE_WMM = BIT(14), 367 IEEE80211_STA_ENABLE_RRM = BIT(15), 368}; 369 370struct ieee80211_mgd_auth_data { 371 struct cfg80211_bss *bss; 372 unsigned long timeout; 373 int tries; 374 u16 algorithm, expected_transaction; 375 376 u8 key[WLAN_KEY_LEN_WEP104]; 377 u8 key_len, key_idx; 378 bool done; 379 bool timeout_started; 380 381 u16 sae_trans, sae_status; 382 size_t data_len; 383 u8 data[]; 384}; 385 386struct ieee80211_mgd_assoc_data { 387 struct cfg80211_bss *bss; 388 const u8 *supp_rates; 389 390 unsigned long timeout; 391 int tries; 392 393 u16 capability; 394 u8 prev_bssid[ETH_ALEN]; 395 u8 ssid[IEEE80211_MAX_SSID_LEN]; 396 u8 ssid_len; 397 u8 supp_rates_len; 398 bool wmm, uapsd; 399 bool need_beacon; 400 bool synced; 401 bool timeout_started; 402 403 u8 ap_ht_param; 404 405 struct ieee80211_vht_cap ap_vht_cap; 406 407 size_t ie_len; 408 u8 ie[]; 409}; 410 411struct 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 429struct ieee80211_if_managed { 430 struct timer_list timer; 431 struct timer_list conn_mon_timer; 432 struct timer_list bcn_mon_timer; 433 struct timer_list chswitch_timer; 434 struct work_struct monitor_work; 435 struct work_struct chswitch_work; 436 struct work_struct beacon_connection_loss_work; 437 struct work_struct csa_connection_drop_work; 438 439 unsigned long beacon_timeout; 440 unsigned long probe_timeout; 441 int probe_send_count; 442 bool nullfunc_failed; 443 bool connection_loss; 444 445 struct cfg80211_bss *associated; 446 struct ieee80211_mgd_auth_data *auth_data; 447 struct ieee80211_mgd_assoc_data *assoc_data; 448 449 u8 bssid[ETH_ALEN]; 450 451 u16 aid; 452 453 bool powersave; /* powersave requested for this iface */ 454 bool broken_ap; /* AP is broken -- turn off powersave */ 455 bool have_beacon; 456 u8 dtim_period; 457 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 458 driver_smps_mode; /* smps mode request */ 459 460 struct work_struct request_smps_work; 461 462 unsigned int flags; 463 464 bool csa_waiting_bcn; 465 bool csa_ignored_same_chan; 466 467 bool beacon_crc_valid; 468 u32 beacon_crc; 469 470 bool status_acked; 471 bool status_received; 472 __le16 status_fc; 473 474 enum { 475 IEEE80211_MFP_DISABLED, 476 IEEE80211_MFP_OPTIONAL, 477 IEEE80211_MFP_REQUIRED 478 } mfp; /* management frame protection */ 479 480 /* 481 * Bitmask of enabled u-apsd queues, 482 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 483 * to take effect. 484 */ 485 unsigned int uapsd_queues; 486 487 /* 488 * Maximum number of buffered frames AP can deliver during a 489 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 490 * Needs a new association to take effect. 491 */ 492 unsigned int uapsd_max_sp_len; 493 494 int wmm_last_param_set; 495 496 u8 use_4addr; 497 498 s16 p2p_noa_index; 499 500 /* Signal strength from the last Beacon frame in the current BSS. */ 501 int last_beacon_signal; 502 503 /* 504 * Weighted average of the signal strength from Beacon frames in the 505 * current BSS. This is in units of 1/16 of the signal unit to maintain 506 * accuracy and to speed up calculations, i.e., the value need to be 507 * divided by 16 to get the actual value. 508 */ 509 int ave_beacon_signal; 510 511 /* 512 * Number of Beacon frames used in ave_beacon_signal. This can be used 513 * to avoid generating less reliable cqm events that would be based 514 * only on couple of received frames. 515 */ 516 unsigned int count_beacon_signal; 517 518 /* 519 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 520 * that triggered a cqm event. 0 indicates that no event has been 521 * generated for the current association. 522 */ 523 int last_cqm_event_signal; 524 525 /* 526 * State variables for keeping track of RSSI of the AP currently 527 * connected to and informing driver when RSSI has gone 528 * below/above a certain threshold. 529 */ 530 int rssi_min_thold, rssi_max_thold; 531 int last_ave_beacon_signal; 532 533 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 534 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 535 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 536 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 537 538 /* TDLS support */ 539 u8 tdls_peer[ETH_ALEN] __aligned(2); 540 struct delayed_work tdls_peer_del_work; 541 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 542 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 543 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 544 bool tdls_chan_switch_prohibited; 545 546 /* WMM-AC TSPEC support */ 547 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 548 /* Use a separate work struct so that we can do something here 549 * while the sdata->work is flushing the queues, for example. 550 * otherwise, in scenarios where we hardly get any traffic out 551 * on the BE queue, but there's a lot of VO traffic, we might 552 * get stuck in a downgraded situation and flush takes forever. 553 */ 554 struct delayed_work tx_tspec_wk; 555}; 556 557struct ieee80211_if_ibss { 558 struct timer_list timer; 559 struct work_struct csa_connection_drop_work; 560 561 unsigned long last_scan_completed; 562 563 u32 basic_rates; 564 565 bool fixed_bssid; 566 bool fixed_channel; 567 bool privacy; 568 569 bool control_port; 570 bool userspace_handles_dfs; 571 572 u8 bssid[ETH_ALEN] __aligned(2); 573 u8 ssid[IEEE80211_MAX_SSID_LEN]; 574 u8 ssid_len, ie_len; 575 u8 *ie; 576 struct cfg80211_chan_def chandef; 577 578 unsigned long ibss_join_req; 579 /* probe response/beacon for IBSS */ 580 struct beacon_data __rcu *presp; 581 582 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 583 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 584 585 spinlock_t incomplete_lock; 586 struct list_head incomplete_stations; 587 588 enum { 589 IEEE80211_IBSS_MLME_SEARCH, 590 IEEE80211_IBSS_MLME_JOINED, 591 } state; 592}; 593 594/** 595 * struct ieee80211_if_ocb - OCB mode state 596 * 597 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 598 * @wrkq_flags: OCB deferred task action 599 * @incomplete_lock: delayed STA insertion lock 600 * @incomplete_stations: list of STAs waiting for delayed insertion 601 * @joined: indication if the interface is connected to an OCB network 602 */ 603struct ieee80211_if_ocb { 604 struct timer_list housekeeping_timer; 605 unsigned long wrkq_flags; 606 607 spinlock_t incomplete_lock; 608 struct list_head incomplete_stations; 609 610 bool joined; 611}; 612 613/** 614 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 615 * 616 * these declarations define the interface, which enables 617 * vendor-specific mesh synchronization 618 * 619 */ 620struct ieee802_11_elems; 621struct ieee80211_mesh_sync_ops { 622 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 623 u16 stype, 624 struct ieee80211_mgmt *mgmt, 625 struct ieee802_11_elems *elems, 626 struct ieee80211_rx_status *rx_status); 627 628 /* should be called with beacon_data under RCU read lock */ 629 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 630 struct beacon_data *beacon); 631 /* add other framework functions here */ 632}; 633 634struct mesh_csa_settings { 635 struct rcu_head rcu_head; 636 struct cfg80211_csa_settings settings; 637}; 638 639struct ieee80211_if_mesh { 640 struct timer_list housekeeping_timer; 641 struct timer_list mesh_path_timer; 642 struct timer_list mesh_path_root_timer; 643 644 unsigned long wrkq_flags; 645 unsigned long mbss_changed; 646 647 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 648 size_t mesh_id_len; 649 /* Active Path Selection Protocol Identifier */ 650 u8 mesh_pp_id; 651 /* Active Path Selection Metric Identifier */ 652 u8 mesh_pm_id; 653 /* Congestion Control Mode Identifier */ 654 u8 mesh_cc_id; 655 /* Synchronization Protocol Identifier */ 656 u8 mesh_sp_id; 657 /* Authentication Protocol Identifier */ 658 u8 mesh_auth_id; 659 /* Local mesh Sequence Number */ 660 u32 sn; 661 /* Last used PREQ ID */ 662 u32 preq_id; 663 atomic_t mpaths; 664 /* Timestamp of last SN update */ 665 unsigned long last_sn_update; 666 /* Time when it's ok to send next PERR */ 667 unsigned long next_perr; 668 /* Timestamp of last PREQ sent */ 669 unsigned long last_preq; 670 struct mesh_rmc *rmc; 671 spinlock_t mesh_preq_queue_lock; 672 struct mesh_preq_queue preq_queue; 673 int preq_queue_len; 674 struct mesh_stats mshstats; 675 struct mesh_config mshcfg; 676 atomic_t estab_plinks; 677 u32 mesh_seqnum; 678 bool accepting_plinks; 679 int num_gates; 680 struct beacon_data __rcu *beacon; 681 const u8 *ie; 682 u8 ie_len; 683 enum { 684 IEEE80211_MESH_SEC_NONE = 0x0, 685 IEEE80211_MESH_SEC_AUTHED = 0x1, 686 IEEE80211_MESH_SEC_SECURED = 0x2, 687 } security; 688 bool user_mpm; 689 /* Extensible Synchronization Framework */ 690 const struct ieee80211_mesh_sync_ops *sync_ops; 691 s64 sync_offset_clockdrift_max; 692 spinlock_t sync_offset_lock; 693 bool adjusting_tbtt; 694 /* mesh power save */ 695 enum nl80211_mesh_power_mode nonpeer_pm; 696 int ps_peers_light_sleep; 697 int ps_peers_deep_sleep; 698 struct ps_data ps; 699 /* Channel Switching Support */ 700 struct mesh_csa_settings __rcu *csa; 701 enum { 702 IEEE80211_MESH_CSA_ROLE_NONE, 703 IEEE80211_MESH_CSA_ROLE_INIT, 704 IEEE80211_MESH_CSA_ROLE_REPEATER, 705 } csa_role; 706 u8 chsw_ttl; 707 u16 pre_value; 708 709 /* offset from skb->data while building IE */ 710 int meshconf_offset; 711}; 712 713#ifdef CONFIG_MAC80211_MESH 714#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 715 do { (msh)->mshstats.name++; } while (0) 716#else 717#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 718 do { } while (0) 719#endif 720 721/** 722 * enum ieee80211_sub_if_data_flags - virtual interface flags 723 * 724 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 725 * @IEEE80211_SDATA_PROMISC: interface is promisc 726 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 727 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 728 * associated stations and deliver multicast frames both 729 * back to wireless media and to the local net stack. 730 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 731 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 732 */ 733enum ieee80211_sub_if_data_flags { 734 IEEE80211_SDATA_ALLMULTI = BIT(0), 735 IEEE80211_SDATA_PROMISC = BIT(1), 736 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 737 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 738 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 739 IEEE80211_SDATA_IN_DRIVER = BIT(5), 740}; 741 742/** 743 * enum ieee80211_sdata_state_bits - virtual interface state bits 744 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 745 * mirrors netif_running() but is separate for interface type 746 * change handling while the interface is up 747 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 748 * mode, so queues are stopped 749 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 750 * to offchannel, reset when offchannel returns 751 */ 752enum ieee80211_sdata_state_bits { 753 SDATA_STATE_RUNNING, 754 SDATA_STATE_OFFCHANNEL, 755 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 756}; 757 758/** 759 * enum ieee80211_chanctx_mode - channel context configuration mode 760 * 761 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 762 * multiple interfaces 763 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 764 * only by a single interface. This can be used for example for 765 * non-fixed channel IBSS. 766 */ 767enum ieee80211_chanctx_mode { 768 IEEE80211_CHANCTX_SHARED, 769 IEEE80211_CHANCTX_EXCLUSIVE 770}; 771 772/** 773 * enum ieee80211_chanctx_replace_state - channel context replacement state 774 * 775 * This is used for channel context in-place reservations that require channel 776 * context switch/swap. 777 * 778 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 779 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 780 * by a (not yet registered) channel context pointed by %replace_ctx. 781 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 782 * replaces an existing channel context pointed to by %replace_ctx. 783 */ 784enum ieee80211_chanctx_replace_state { 785 IEEE80211_CHANCTX_REPLACE_NONE, 786 IEEE80211_CHANCTX_WILL_BE_REPLACED, 787 IEEE80211_CHANCTX_REPLACES_OTHER, 788}; 789 790struct ieee80211_chanctx { 791 struct list_head list; 792 struct rcu_head rcu_head; 793 794 struct list_head assigned_vifs; 795 struct list_head reserved_vifs; 796 797 enum ieee80211_chanctx_replace_state replace_state; 798 struct ieee80211_chanctx *replace_ctx; 799 800 enum ieee80211_chanctx_mode mode; 801 bool driver_present; 802 803 struct ieee80211_chanctx_conf conf; 804}; 805 806struct mac80211_qos_map { 807 struct cfg80211_qos_map qos_map; 808 struct rcu_head rcu_head; 809}; 810 811enum txq_info_flags { 812 IEEE80211_TXQ_STOP, 813 IEEE80211_TXQ_AMPDU, 814}; 815 816struct txq_info { 817 struct sk_buff_head queue; 818 unsigned long flags; 819 820 /* keep last! */ 821 struct ieee80211_txq txq; 822}; 823 824struct ieee80211_sub_if_data { 825 struct list_head list; 826 827 struct wireless_dev wdev; 828 829 /* keys */ 830 struct list_head key_list; 831 832 /* count for keys needing tailroom space allocation */ 833 int crypto_tx_tailroom_needed_cnt; 834 int crypto_tx_tailroom_pending_dec; 835 struct delayed_work dec_tailroom_needed_wk; 836 837 struct net_device *dev; 838 struct ieee80211_local *local; 839 840 unsigned int flags; 841 842 unsigned long state; 843 844 char name[IFNAMSIZ]; 845 846 /* Fragment table for host-based reassembly */ 847 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 848 unsigned int fragment_next; 849 850 /* TID bitmap for NoAck policy */ 851 u16 noack_map; 852 853 /* bit field of ACM bits (BIT(802.1D tag)) */ 854 u8 wmm_acm; 855 856 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 857 struct ieee80211_key __rcu *default_unicast_key; 858 struct ieee80211_key __rcu *default_multicast_key; 859 struct ieee80211_key __rcu *default_mgmt_key; 860 861 u16 sequence_number; 862 __be16 control_port_protocol; 863 bool control_port_no_encrypt; 864 int encrypt_headroom; 865 866 atomic_t txqs_len[IEEE80211_NUM_ACS]; 867 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 868 struct mac80211_qos_map __rcu *qos_map; 869 870 struct work_struct csa_finalize_work; 871 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 872 struct cfg80211_chan_def csa_chandef; 873 874 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 875 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 876 877 /* context reservation -- protected with chanctx_mtx */ 878 struct ieee80211_chanctx *reserved_chanctx; 879 struct cfg80211_chan_def reserved_chandef; 880 bool reserved_radar_required; 881 bool reserved_ready; 882 883 /* used to reconfigure hardware SM PS */ 884 struct work_struct recalc_smps; 885 886 struct work_struct work; 887 struct sk_buff_head skb_queue; 888 889 u8 needed_rx_chains; 890 enum ieee80211_smps_mode smps_mode; 891 892 int user_power_level; /* in dBm */ 893 int ap_power_level; /* in dBm */ 894 895 bool radar_required; 896 struct delayed_work dfs_cac_timer_work; 897 898 /* 899 * AP this belongs to: self in AP mode and 900 * corresponding AP in VLAN mode, NULL for 901 * all others (might be needed later in IBSS) 902 */ 903 struct ieee80211_if_ap *bss; 904 905 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 906 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 907 908 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 909 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 910 911 union { 912 struct ieee80211_if_ap ap; 913 struct ieee80211_if_wds wds; 914 struct ieee80211_if_vlan vlan; 915 struct ieee80211_if_managed mgd; 916 struct ieee80211_if_ibss ibss; 917 struct ieee80211_if_mesh mesh; 918 struct ieee80211_if_ocb ocb; 919 u32 mntr_flags; 920 } u; 921 922#ifdef CONFIG_MAC80211_DEBUGFS 923 struct { 924 struct dentry *subdir_stations; 925 struct dentry *default_unicast_key; 926 struct dentry *default_multicast_key; 927 struct dentry *default_mgmt_key; 928 } debugfs; 929#endif 930 931 /* must be last, dynamically sized area in this! */ 932 struct ieee80211_vif vif; 933}; 934 935static inline 936struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 937{ 938 return container_of(p, struct ieee80211_sub_if_data, vif); 939} 940 941static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 942 __acquires(&sdata->wdev.mtx) 943{ 944 mutex_lock(&sdata->wdev.mtx); 945 __acquire(&sdata->wdev.mtx); 946} 947 948static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 949 __releases(&sdata->wdev.mtx) 950{ 951 mutex_unlock(&sdata->wdev.mtx); 952 __release(&sdata->wdev.mtx); 953} 954 955#define sdata_dereference(p, sdata) \ 956 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 957 958static inline void 959sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 960{ 961 lockdep_assert_held(&sdata->wdev.mtx); 962} 963 964static inline enum ieee80211_band 965ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 966{ 967 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 968 struct ieee80211_chanctx_conf *chanctx_conf; 969 970 rcu_read_lock(); 971 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 972 if (!WARN_ON(!chanctx_conf)) 973 band = chanctx_conf->def.chan->band; 974 rcu_read_unlock(); 975 976 return band; 977} 978 979static inline int 980ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 981{ 982 switch (chandef->width) { 983 case NL80211_CHAN_WIDTH_5: 984 return 2; 985 case NL80211_CHAN_WIDTH_10: 986 return 1; 987 default: 988 return 0; 989 } 990} 991 992static inline int 993ieee80211_vif_get_shift(struct ieee80211_vif *vif) 994{ 995 struct ieee80211_chanctx_conf *chanctx_conf; 996 int shift = 0; 997 998 rcu_read_lock(); 999 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1000 if (chanctx_conf) 1001 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1002 rcu_read_unlock(); 1003 1004 return shift; 1005} 1006 1007struct ieee80211_rx_agg { 1008 u8 addr[ETH_ALEN]; 1009 u16 tid; 1010}; 1011 1012enum sdata_queue_type { 1013 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1014 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1015 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1016 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1017 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1018 IEEE80211_SDATA_QUEUE_TDLS_CHSW = 5, 1019}; 1020 1021enum { 1022 IEEE80211_RX_MSG = 1, 1023 IEEE80211_TX_STATUS_MSG = 2, 1024}; 1025 1026enum queue_stop_reason { 1027 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1028 IEEE80211_QUEUE_STOP_REASON_PS, 1029 IEEE80211_QUEUE_STOP_REASON_CSA, 1030 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1031 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1032 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1033 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1034 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1035 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1036 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1037 1038 IEEE80211_QUEUE_STOP_REASONS, 1039}; 1040 1041#ifdef CONFIG_MAC80211_LEDS 1042struct tpt_led_trigger { 1043 struct led_trigger trig; 1044 char name[32]; 1045 const struct ieee80211_tpt_blink *blink_table; 1046 unsigned int blink_table_len; 1047 struct timer_list timer; 1048 unsigned long prev_traffic; 1049 unsigned long tx_bytes, rx_bytes; 1050 unsigned int active, want; 1051 bool running; 1052}; 1053#endif 1054 1055/** 1056 * mac80211 scan flags - currently active scan mode 1057 * 1058 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1059 * well be on the operating channel 1060 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1061 * determine if we are on the operating channel or not 1062 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1063 * channel. This should not interrupt normal traffic. 1064 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1065 * that the scan completed. 1066 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1067 * a scan complete for an aborted scan. 1068 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1069 * cancelled. 1070 */ 1071enum { 1072 SCAN_SW_SCANNING, 1073 SCAN_HW_SCANNING, 1074 SCAN_ONCHANNEL_SCANNING, 1075 SCAN_COMPLETED, 1076 SCAN_ABORTED, 1077 SCAN_HW_CANCELLED, 1078}; 1079 1080/** 1081 * enum mac80211_scan_state - scan state machine states 1082 * 1083 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1084 * determines if we should keep on scanning or switch back to the 1085 * operating channel 1086 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1087 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1088 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1089 * send out data 1090 * @SCAN_RESUME: Resume the scan and scan the next channel 1091 * @SCAN_ABORT: Abort the scan and go back to operating channel 1092 */ 1093enum mac80211_scan_state { 1094 SCAN_DECISION, 1095 SCAN_SET_CHANNEL, 1096 SCAN_SEND_PROBE, 1097 SCAN_SUSPEND, 1098 SCAN_RESUME, 1099 SCAN_ABORT, 1100}; 1101 1102struct ieee80211_local { 1103 /* embed the driver visible part. 1104 * don't cast (use the static inlines below), but we keep 1105 * it first anyway so they become a no-op */ 1106 struct ieee80211_hw hw; 1107 1108 const struct ieee80211_ops *ops; 1109 1110 /* 1111 * private workqueue to mac80211. mac80211 makes this accessible 1112 * via ieee80211_queue_work() 1113 */ 1114 struct workqueue_struct *workqueue; 1115 1116 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1117 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1118 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1119 spinlock_t queue_stop_reason_lock; 1120 1121 int open_count; 1122 int monitors, cooked_mntrs; 1123 /* number of interfaces with corresponding FIF_ flags */ 1124 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1125 fif_probe_req; 1126 int probe_req_reg; 1127 unsigned int filter_flags; /* FIF_* */ 1128 1129 bool wiphy_ciphers_allocated; 1130 1131 bool use_chanctx; 1132 1133 /* protects the aggregated multicast list and filter calls */ 1134 spinlock_t filter_lock; 1135 1136 /* used for uploading changed mc list */ 1137 struct work_struct reconfig_filter; 1138 1139 /* aggregated multicast list */ 1140 struct netdev_hw_addr_list mc_list; 1141 1142 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1143 1144 /* 1145 * suspended is true if we finished all the suspend _and_ we have 1146 * not yet come up from resume. This is to be used by mac80211 1147 * to ensure driver sanity during suspend and mac80211's own 1148 * sanity. It can eventually be used for WoW as well. 1149 */ 1150 bool suspended; 1151 1152 /* 1153 * Resuming is true while suspended, but when we're reprogramming the 1154 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1155 * again even though some other parts of the stack are still suspended 1156 * and we still drop received frames to avoid waking the stack. 1157 */ 1158 bool resuming; 1159 1160 /* 1161 * quiescing is true during the suspend process _only_ to 1162 * ease timer cancelling etc. 1163 */ 1164 bool quiescing; 1165 1166 /* device is started */ 1167 bool started; 1168 1169 /* device is during a HW reconfig */ 1170 bool in_reconfig; 1171 1172 /* wowlan is enabled -- don't reconfig on resume */ 1173 bool wowlan; 1174 1175 struct work_struct radar_detected_work; 1176 1177 /* number of RX chains the hardware has */ 1178 u8 rx_chains; 1179 1180 int tx_headroom; /* required headroom for hardware/radiotap */ 1181 1182 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1183 * added to skb_queue will be processed, but frames in 1184 * skb_queue_unreliable may be dropped if the total length of these 1185 * queues increases over the limit. */ 1186#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1187 struct tasklet_struct tasklet; 1188 struct sk_buff_head skb_queue; 1189 struct sk_buff_head skb_queue_unreliable; 1190 1191 spinlock_t rx_path_lock; 1192 1193 /* Station data */ 1194 /* 1195 * The mutex only protects the list, hash table and 1196 * counter, reads are done with RCU. 1197 */ 1198 struct mutex sta_mtx; 1199 spinlock_t tim_lock; 1200 unsigned long num_sta; 1201 struct list_head sta_list; 1202 struct rhashtable sta_hash; 1203 struct timer_list sta_cleanup; 1204 int sta_generation; 1205 1206 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1207 struct tasklet_struct tx_pending_tasklet; 1208 1209 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1210 1211 /* number of interfaces with corresponding IFF_ flags */ 1212 atomic_t iff_allmultis, iff_promiscs; 1213 1214 struct rate_control_ref *rate_ctrl; 1215 1216 struct crypto_cipher *wep_tx_tfm; 1217 struct crypto_cipher *wep_rx_tfm; 1218 u32 wep_iv; 1219 1220 /* see iface.c */ 1221 struct list_head interfaces; 1222 struct mutex iflist_mtx; 1223 1224 /* 1225 * Key mutex, protects sdata's key_list and sta_info's 1226 * key pointers (write access, they're RCU.) 1227 */ 1228 struct mutex key_mtx; 1229 1230 /* mutex for scan and work locking */ 1231 struct mutex mtx; 1232 1233 /* Scanning and BSS list */ 1234 unsigned long scanning; 1235 struct cfg80211_ssid scan_ssid; 1236 struct cfg80211_scan_request *int_scan_req; 1237 struct cfg80211_scan_request __rcu *scan_req; 1238 struct ieee80211_scan_request *hw_scan_req; 1239 struct cfg80211_chan_def scan_chandef; 1240 enum ieee80211_band hw_scan_band; 1241 int scan_channel_idx; 1242 int scan_ies_len; 1243 int hw_scan_ies_bufsize; 1244 1245 struct work_struct sched_scan_stopped_work; 1246 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1247 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1248 u8 scan_addr[ETH_ALEN]; 1249 1250 unsigned long leave_oper_channel_time; 1251 enum mac80211_scan_state next_scan_state; 1252 struct delayed_work scan_work; 1253 struct ieee80211_sub_if_data __rcu *scan_sdata; 1254 /* For backward compatibility only -- do not use */ 1255 struct cfg80211_chan_def _oper_chandef; 1256 1257 /* Temporary remain-on-channel for off-channel operations */ 1258 struct ieee80211_channel *tmp_channel; 1259 1260 /* channel contexts */ 1261 struct list_head chanctx_list; 1262 struct mutex chanctx_mtx; 1263 1264 /* SNMP counters */ 1265 /* dot11CountersTable */ 1266 u32 dot11TransmittedFragmentCount; 1267 u32 dot11MulticastTransmittedFrameCount; 1268 u32 dot11FailedCount; 1269 u32 dot11RetryCount; 1270 u32 dot11MultipleRetryCount; 1271 u32 dot11FrameDuplicateCount; 1272 u32 dot11ReceivedFragmentCount; 1273 u32 dot11MulticastReceivedFrameCount; 1274 u32 dot11TransmittedFrameCount; 1275 1276#ifdef CONFIG_MAC80211_LEDS 1277 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1278 struct tpt_led_trigger *tpt_led_trigger; 1279 char tx_led_name[32], rx_led_name[32], 1280 assoc_led_name[32], radio_led_name[32]; 1281#endif 1282 1283#ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1284 /* TX/RX handler statistics */ 1285 unsigned int tx_handlers_drop; 1286 unsigned int tx_handlers_queued; 1287 unsigned int tx_handlers_drop_fragment; 1288 unsigned int tx_handlers_drop_wep; 1289 unsigned int tx_handlers_drop_not_assoc; 1290 unsigned int tx_handlers_drop_unauth_port; 1291 unsigned int rx_handlers_drop; 1292 unsigned int rx_handlers_queued; 1293 unsigned int rx_handlers_drop_nullfunc; 1294 unsigned int rx_handlers_drop_defrag; 1295 unsigned int rx_handlers_drop_short; 1296 unsigned int tx_expand_skb_head; 1297 unsigned int tx_expand_skb_head_cloned; 1298 unsigned int rx_expand_skb_head; 1299 unsigned int rx_expand_skb_head2; 1300 unsigned int rx_handlers_fragments; 1301 unsigned int tx_status_drop; 1302#define I802_DEBUG_INC(c) (c)++ 1303#else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1304#define I802_DEBUG_INC(c) do { } while (0) 1305#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1306 1307 1308 int total_ps_buffered; /* total number of all buffered unicast and 1309 * multicast packets for power saving stations 1310 */ 1311 1312 bool pspolling; 1313 bool offchannel_ps_enabled; 1314 /* 1315 * PS can only be enabled when we have exactly one managed 1316 * interface (and monitors) in PS, this then points there. 1317 */ 1318 struct ieee80211_sub_if_data *ps_sdata; 1319 struct work_struct dynamic_ps_enable_work; 1320 struct work_struct dynamic_ps_disable_work; 1321 struct timer_list dynamic_ps_timer; 1322 struct notifier_block network_latency_notifier; 1323 struct notifier_block ifa_notifier; 1324 struct notifier_block ifa6_notifier; 1325 1326 /* 1327 * The dynamic ps timeout configured from user space via WEXT - 1328 * this will override whatever chosen by mac80211 internally. 1329 */ 1330 int dynamic_ps_forced_timeout; 1331 1332 int user_power_level; /* in dBm, for all interfaces */ 1333 1334 enum ieee80211_smps_mode smps_mode; 1335 1336 struct work_struct restart_work; 1337 1338#ifdef CONFIG_MAC80211_DEBUGFS 1339 struct local_debugfsdentries { 1340 struct dentry *rcdir; 1341 struct dentry *keys; 1342 } debugfs; 1343#endif 1344 1345 /* 1346 * Remain-on-channel support 1347 */ 1348 struct list_head roc_list; 1349 struct work_struct hw_roc_start, hw_roc_done; 1350 unsigned long hw_roc_start_time; 1351 u64 roc_cookie_counter; 1352 1353 struct idr ack_status_frames; 1354 spinlock_t ack_status_lock; 1355 1356 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1357 1358 struct napi_struct *napi; 1359 1360 /* virtual monitor interface */ 1361 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1362 struct cfg80211_chan_def monitor_chandef; 1363 1364 /* extended capabilities provided by mac80211 */ 1365 u8 ext_capa[8]; 1366}; 1367 1368static inline struct ieee80211_sub_if_data * 1369IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1370{ 1371 return netdev_priv(dev); 1372} 1373 1374static inline struct ieee80211_sub_if_data * 1375IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1376{ 1377 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1378} 1379 1380/* this struct represents 802.11n's RA/TID combination */ 1381struct ieee80211_ra_tid { 1382 u8 ra[ETH_ALEN]; 1383 u16 tid; 1384}; 1385 1386/* this struct holds the value parsing from channel switch IE */ 1387struct ieee80211_csa_ie { 1388 struct cfg80211_chan_def chandef; 1389 u8 mode; 1390 u8 count; 1391 u8 ttl; 1392 u16 pre_value; 1393}; 1394 1395/* Parsed Information Elements */ 1396struct ieee802_11_elems { 1397 const u8 *ie_start; 1398 size_t total_len; 1399 1400 /* pointers to IEs */ 1401 const struct ieee80211_tdls_lnkie *lnk_id; 1402 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1403 const u8 *ext_capab; 1404 const u8 *ssid; 1405 const u8 *supp_rates; 1406 const u8 *ds_params; 1407 const struct ieee80211_tim_ie *tim; 1408 const u8 *challenge; 1409 const u8 *rsn; 1410 const u8 *erp_info; 1411 const u8 *ext_supp_rates; 1412 const u8 *wmm_info; 1413 const u8 *wmm_param; 1414 const struct ieee80211_ht_cap *ht_cap_elem; 1415 const struct ieee80211_ht_operation *ht_operation; 1416 const struct ieee80211_vht_cap *vht_cap_elem; 1417 const struct ieee80211_vht_operation *vht_operation; 1418 const struct ieee80211_meshconf_ie *mesh_config; 1419 const u8 *mesh_id; 1420 const u8 *peering; 1421 const __le16 *awake_window; 1422 const u8 *preq; 1423 const u8 *prep; 1424 const u8 *perr; 1425 const struct ieee80211_rann_ie *rann; 1426 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1427 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1428 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1429 const u8 *country_elem; 1430 const u8 *pwr_constr_elem; 1431 const u8 *cisco_dtpc_elem; 1432 const struct ieee80211_timeout_interval_ie *timeout_int; 1433 const u8 *opmode_notif; 1434 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1435 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1436 1437 /* length of them, respectively */ 1438 u8 ext_capab_len; 1439 u8 ssid_len; 1440 u8 supp_rates_len; 1441 u8 tim_len; 1442 u8 challenge_len; 1443 u8 rsn_len; 1444 u8 ext_supp_rates_len; 1445 u8 wmm_info_len; 1446 u8 wmm_param_len; 1447 u8 mesh_id_len; 1448 u8 peering_len; 1449 u8 preq_len; 1450 u8 prep_len; 1451 u8 perr_len; 1452 u8 country_elem_len; 1453 1454 /* whether a parse error occurred while retrieving these elements */ 1455 bool parse_error; 1456}; 1457 1458static inline struct ieee80211_local *hw_to_local( 1459 struct ieee80211_hw *hw) 1460{ 1461 return container_of(hw, struct ieee80211_local, hw); 1462} 1463 1464static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1465{ 1466 return container_of(txq, struct txq_info, txq); 1467} 1468 1469static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1470{ 1471 return ether_addr_equal(raddr, addr) || 1472 is_broadcast_ether_addr(raddr); 1473} 1474 1475static inline bool 1476ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1477{ 1478 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1479 status->flag & RX_FLAG_MACTIME_END); 1480 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1481} 1482 1483u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1484 struct ieee80211_rx_status *status, 1485 unsigned int mpdu_len, 1486 unsigned int mpdu_offset); 1487int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1488void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1489void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1490 u32 changed); 1491void ieee80211_configure_filter(struct ieee80211_local *local); 1492u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1493 1494/* STA code */ 1495void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1496int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1497 struct cfg80211_auth_request *req); 1498int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1499 struct cfg80211_assoc_request *req); 1500int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1501 struct cfg80211_deauth_request *req); 1502int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1503 struct cfg80211_disassoc_request *req); 1504void ieee80211_send_pspoll(struct ieee80211_local *local, 1505 struct ieee80211_sub_if_data *sdata); 1506void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1507void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1508int ieee80211_max_network_latency(struct notifier_block *nb, 1509 unsigned long data, void *dummy); 1510int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1511void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1512void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1513 struct sk_buff *skb); 1514void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1515void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1516void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1517void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1518 __le16 fc, bool acked); 1519void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1520void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1521void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1522 1523/* IBSS code */ 1524void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1525void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1526void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1527 const u8 *bssid, const u8 *addr, u32 supp_rates); 1528int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1529 struct cfg80211_ibss_params *params); 1530int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1531void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1532void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1533 struct sk_buff *skb); 1534int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1535 struct cfg80211_csa_settings *csa_settings); 1536int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1537void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1538 1539/* OCB code */ 1540void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1541void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1542 const u8 *bssid, const u8 *addr, u32 supp_rates); 1543void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1544int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1545 struct ocb_setup *setup); 1546int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1547 1548/* mesh code */ 1549void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1550void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1551 struct sk_buff *skb); 1552int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1553 struct cfg80211_csa_settings *csa_settings); 1554int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1555 1556/* scan/BSS handling */ 1557void ieee80211_scan_work(struct work_struct *work); 1558int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1559 const u8 *ssid, u8 ssid_len, 1560 struct ieee80211_channel **channels, 1561 unsigned int n_channels, 1562 enum nl80211_bss_scan_width scan_width); 1563int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1564 struct cfg80211_scan_request *req); 1565void ieee80211_scan_cancel(struct ieee80211_local *local); 1566void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1567void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1568 1569void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1570struct ieee80211_bss * 1571ieee80211_bss_info_update(struct ieee80211_local *local, 1572 struct ieee80211_rx_status *rx_status, 1573 struct ieee80211_mgmt *mgmt, 1574 size_t len, 1575 struct ieee802_11_elems *elems, 1576 struct ieee80211_channel *channel); 1577void ieee80211_rx_bss_put(struct ieee80211_local *local, 1578 struct ieee80211_bss *bss); 1579 1580/* scheduled scan handling */ 1581int 1582__ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1583 struct cfg80211_sched_scan_request *req); 1584int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1585 struct cfg80211_sched_scan_request *req); 1586int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1587void ieee80211_sched_scan_end(struct ieee80211_local *local); 1588void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1589 1590/* off-channel helpers */ 1591void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1592void ieee80211_offchannel_return(struct ieee80211_local *local); 1593void ieee80211_roc_setup(struct ieee80211_local *local); 1594void ieee80211_start_next_roc(struct ieee80211_local *local); 1595void ieee80211_roc_purge(struct ieee80211_local *local, 1596 struct ieee80211_sub_if_data *sdata); 1597void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1598void ieee80211_sw_roc_work(struct work_struct *work); 1599void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1600 1601/* channel switch handling */ 1602void ieee80211_csa_finalize_work(struct work_struct *work); 1603int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1604 struct cfg80211_csa_settings *params); 1605 1606/* interface handling */ 1607int ieee80211_iface_init(void); 1608void ieee80211_iface_exit(void); 1609int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1610 unsigned char name_assign_type, 1611 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1612 struct vif_params *params); 1613int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1614 enum nl80211_iftype type); 1615void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1616void ieee80211_remove_interfaces(struct ieee80211_local *local); 1617u32 ieee80211_idle_off(struct ieee80211_local *local); 1618void ieee80211_recalc_idle(struct ieee80211_local *local); 1619void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1620 const int offset); 1621int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1622void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1623int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1624void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1625 1626bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1627void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1628 bool update_bss); 1629 1630static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1631{ 1632 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1633} 1634 1635/* tx handling */ 1636void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1637void ieee80211_tx_pending(unsigned long data); 1638netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1639 struct net_device *dev); 1640netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1641 struct net_device *dev); 1642void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1643 struct net_device *dev, 1644 u32 info_flags); 1645void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1646 struct sk_buff_head *skbs); 1647struct sk_buff * 1648ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1649 struct sk_buff *skb, u32 info_flags); 1650 1651/* HT */ 1652void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1653 struct ieee80211_sta_ht_cap *ht_cap); 1654bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1655 struct ieee80211_supported_band *sband, 1656 const struct ieee80211_ht_cap *ht_cap_ie, 1657 struct sta_info *sta); 1658void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1659 const u8 *da, u16 tid, 1660 u16 initiator, u16 reason_code); 1661int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1662 enum ieee80211_smps_mode smps, const u8 *da, 1663 const u8 *bssid); 1664void ieee80211_request_smps_ap_work(struct work_struct *work); 1665void ieee80211_request_smps_mgd_work(struct work_struct *work); 1666bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1667 enum ieee80211_smps_mode smps_mode_new); 1668 1669void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1670 u16 initiator, u16 reason, bool stop); 1671void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1672 u16 initiator, u16 reason, bool stop); 1673void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1674 u8 dialog_token, u16 timeout, 1675 u16 start_seq_num, u16 ba_policy, u16 tid, 1676 u16 buf_size, bool tx, bool auto_seq); 1677void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1678 enum ieee80211_agg_stop_reason reason); 1679void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1680 struct sta_info *sta, 1681 struct ieee80211_mgmt *mgmt, size_t len); 1682void ieee80211_process_addba_resp(struct ieee80211_local *local, 1683 struct sta_info *sta, 1684 struct ieee80211_mgmt *mgmt, 1685 size_t len); 1686void ieee80211_process_addba_request(struct ieee80211_local *local, 1687 struct sta_info *sta, 1688 struct ieee80211_mgmt *mgmt, 1689 size_t len); 1690 1691int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1692 enum ieee80211_agg_stop_reason reason); 1693int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1694 enum ieee80211_agg_stop_reason reason); 1695void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1696void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1697void ieee80211_ba_session_work(struct work_struct *work); 1698void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1699void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1700 1701u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1702 1703/* VHT */ 1704void 1705ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1706 struct ieee80211_supported_band *sband, 1707 const struct ieee80211_vht_cap *vht_cap_ie, 1708 struct sta_info *sta); 1709enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1710enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1711void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1712u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1713 struct sta_info *sta, u8 opmode, 1714 enum ieee80211_band band, bool nss_only); 1715void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1716 struct sta_info *sta, u8 opmode, 1717 enum ieee80211_band band, bool nss_only); 1718void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1719 struct ieee80211_sta_vht_cap *vht_cap); 1720 1721/* Spectrum management */ 1722void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1723 struct ieee80211_mgmt *mgmt, 1724 size_t len); 1725/** 1726 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1727 * @sdata: the sdata of the interface which has received the frame 1728 * @elems: parsed 802.11 elements received with the frame 1729 * @current_band: indicates the current band 1730 * @sta_flags: contains information about own capabilities and restrictions 1731 * to decide which channel switch announcements can be accepted. Only the 1732 * following subset of &enum ieee80211_sta_flags are evaluated: 1733 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1734 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1735 * %IEEE80211_STA_DISABLE_160MHZ. 1736 * @bssid: the currently connected bssid (for reporting) 1737 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1738 All of them will be filled with if success only. 1739 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1740 */ 1741int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1742 struct ieee802_11_elems *elems, 1743 enum ieee80211_band current_band, 1744 u32 sta_flags, u8 *bssid, 1745 struct ieee80211_csa_ie *csa_ie); 1746 1747/* Suspend/resume and hw reconfiguration */ 1748int ieee80211_reconfig(struct ieee80211_local *local); 1749void ieee80211_stop_device(struct ieee80211_local *local); 1750 1751int __ieee80211_suspend(struct ieee80211_hw *hw, 1752 struct cfg80211_wowlan *wowlan); 1753 1754static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1755{ 1756 struct ieee80211_local *local = hw_to_local(hw); 1757 1758 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1759 !test_bit(SCAN_COMPLETED, &local->scanning), 1760 "%s: resume with hardware scan still in progress\n", 1761 wiphy_name(hw->wiphy)); 1762 1763 return ieee80211_reconfig(hw_to_local(hw)); 1764} 1765 1766/* utility functions/constants */ 1767extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1768u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1769 enum nl80211_iftype type); 1770int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1771 int rate, int erp, int short_preamble, 1772 int shift); 1773void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1774 struct ieee80211_hdr *hdr, const u8 *tsc, 1775 gfp_t gfp); 1776void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1777 bool bss_notify); 1778void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1779 struct sta_info *sta, struct sk_buff *skb); 1780 1781void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1782 struct sk_buff *skb, int tid, 1783 enum ieee80211_band band); 1784 1785static inline void 1786ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1787 struct sk_buff *skb, int tid, 1788 enum ieee80211_band band) 1789{ 1790 rcu_read_lock(); 1791 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1792 rcu_read_unlock(); 1793} 1794 1795static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1796 struct sk_buff *skb, int tid) 1797{ 1798 struct ieee80211_chanctx_conf *chanctx_conf; 1799 1800 rcu_read_lock(); 1801 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1802 if (WARN_ON(!chanctx_conf)) { 1803 rcu_read_unlock(); 1804 kfree_skb(skb); 1805 return; 1806 } 1807 1808 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1809 chanctx_conf->def.chan->band); 1810 rcu_read_unlock(); 1811} 1812 1813static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1814 struct sk_buff *skb) 1815{ 1816 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1817 ieee80211_tx_skb_tid(sdata, skb, 7); 1818} 1819 1820u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1821 struct ieee802_11_elems *elems, 1822 u64 filter, u32 crc); 1823static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1824 bool action, 1825 struct ieee802_11_elems *elems) 1826{ 1827 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1828} 1829 1830static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1831{ 1832 struct sk_buff *tail = skb_peek_tail(frames); 1833 struct ieee80211_rx_status *status; 1834 1835 if (!tail) 1836 return false; 1837 1838 status = IEEE80211_SKB_RXCB(tail); 1839 if (status->flag & RX_FLAG_AMSDU_MORE) 1840 return false; 1841 1842 return true; 1843} 1844 1845extern const int ieee802_1d_to_ac[8]; 1846 1847static inline int ieee80211_ac_from_tid(int tid) 1848{ 1849 return ieee802_1d_to_ac[tid & 7]; 1850} 1851 1852void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1853void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1854void ieee80211_dynamic_ps_timer(unsigned long data); 1855void ieee80211_send_nullfunc(struct ieee80211_local *local, 1856 struct ieee80211_sub_if_data *sdata, 1857 int powersave); 1858void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1859 struct ieee80211_hdr *hdr); 1860void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1861 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1862 1863void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1864 unsigned long queues, 1865 enum queue_stop_reason reason, 1866 bool refcounted); 1867void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1868 struct ieee80211_sub_if_data *sdata, 1869 enum queue_stop_reason reason); 1870void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1871 struct ieee80211_sub_if_data *sdata, 1872 enum queue_stop_reason reason); 1873void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1874 unsigned long queues, 1875 enum queue_stop_reason reason, 1876 bool refcounted); 1877void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1878 enum queue_stop_reason reason, 1879 bool refcounted); 1880void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1881 enum queue_stop_reason reason, 1882 bool refcounted); 1883void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1884void ieee80211_add_pending_skb(struct ieee80211_local *local, 1885 struct sk_buff *skb); 1886void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1887 struct sk_buff_head *skbs); 1888void ieee80211_flush_queues(struct ieee80211_local *local, 1889 struct ieee80211_sub_if_data *sdata, bool drop); 1890void __ieee80211_flush_queues(struct ieee80211_local *local, 1891 struct ieee80211_sub_if_data *sdata, 1892 unsigned int queues, bool drop); 1893 1894static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1895{ 1896 /* 1897 * If quiescing is set, we are racing with __ieee80211_suspend. 1898 * __ieee80211_suspend flushes the workers after setting quiescing, 1899 * and we check quiescing / suspended before enqueing new workers. 1900 * We should abort the worker to avoid the races below. 1901 */ 1902 if (local->quiescing) 1903 return false; 1904 1905 /* 1906 * We might already be suspended if the following scenario occurs: 1907 * __ieee80211_suspend Control path 1908 * 1909 * if (local->quiescing) 1910 * return; 1911 * local->quiescing = true; 1912 * flush_workqueue(); 1913 * queue_work(...); 1914 * local->suspended = true; 1915 * local->quiescing = false; 1916 * worker starts running... 1917 */ 1918 if (local->suspended) 1919 return false; 1920 1921 return true; 1922} 1923 1924void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, 1925 struct sta_info *sta, 1926 struct txq_info *txq, int tid); 1927void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1928 u16 transaction, u16 auth_alg, u16 status, 1929 const u8 *extra, size_t extra_len, const u8 *bssid, 1930 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1931 u32 tx_flags); 1932void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1933 const u8 *bssid, u16 stype, u16 reason, 1934 bool send_frame, u8 *frame_buf); 1935int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1936 size_t buffer_len, 1937 struct ieee80211_scan_ies *ie_desc, 1938 const u8 *ie, size_t ie_len, 1939 u8 bands_used, u32 *rate_masks, 1940 struct cfg80211_chan_def *chandef); 1941struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1942 const u8 *src, const u8 *dst, 1943 u32 ratemask, 1944 struct ieee80211_channel *chan, 1945 const u8 *ssid, size_t ssid_len, 1946 const u8 *ie, size_t ie_len, 1947 bool directed); 1948void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1949 const u8 *src, const u8 *dst, 1950 const u8 *ssid, size_t ssid_len, 1951 const u8 *ie, size_t ie_len, 1952 u32 ratemask, bool directed, u32 tx_flags, 1953 struct ieee80211_channel *channel, bool scan); 1954 1955u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1956 struct ieee802_11_elems *elems, 1957 enum ieee80211_band band, u32 *basic_rates); 1958int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1959 enum ieee80211_smps_mode smps_mode); 1960int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1961 enum ieee80211_smps_mode smps_mode); 1962void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1963void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1964 1965size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1966u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1967 u16 cap); 1968u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1969 const struct cfg80211_chan_def *chandef, 1970 u16 prot_mode); 1971u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1972 u32 cap); 1973u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1974 const struct cfg80211_chan_def *chandef); 1975int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1976 const struct ieee80211_supported_band *sband, 1977 const u8 *srates, int srates_len, u32 *rates); 1978int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1979 struct sk_buff *skb, bool need_basic, 1980 enum ieee80211_band band); 1981int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1982 struct sk_buff *skb, bool need_basic, 1983 enum ieee80211_band band); 1984u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1985 1986/* channel management */ 1987void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1988 const struct ieee80211_ht_operation *ht_oper, 1989 struct cfg80211_chan_def *chandef); 1990void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, 1991 const struct ieee80211_vht_operation *oper, 1992 struct cfg80211_chan_def *chandef); 1993u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1994 1995int __must_check 1996ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1997 const struct cfg80211_chan_def *chandef, 1998 enum ieee80211_chanctx_mode mode); 1999int __must_check 2000ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2001 const struct cfg80211_chan_def *chandef, 2002 enum ieee80211_chanctx_mode mode, 2003 bool radar_required); 2004int __must_check 2005ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2006int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2007 2008int __must_check 2009ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2010 const struct cfg80211_chan_def *chandef, 2011 u32 *changed); 2012void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2013void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2014void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2015 bool clear); 2016int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2017 struct ieee80211_chanctx *ctx); 2018 2019void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2020 struct ieee80211_chanctx *chanctx); 2021void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2022 struct ieee80211_chanctx *ctx); 2023bool ieee80211_is_radar_required(struct ieee80211_local *local); 2024 2025void ieee80211_dfs_cac_timer(unsigned long data); 2026void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2027void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2028void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2029int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2030 struct cfg80211_csa_settings *csa_settings); 2031 2032bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2033bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2034const struct ieee80211_cipher_scheme * 2035ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2036 enum nl80211_iftype iftype); 2037int ieee80211_cs_headroom(struct ieee80211_local *local, 2038 struct cfg80211_crypto_settings *crypto, 2039 enum nl80211_iftype iftype); 2040void ieee80211_recalc_dtim(struct ieee80211_local *local, 2041 struct ieee80211_sub_if_data *sdata); 2042int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2043 const struct cfg80211_chan_def *chandef, 2044 enum ieee80211_chanctx_mode chanmode, 2045 u8 radar_detect); 2046int ieee80211_max_num_channels(struct ieee80211_local *local); 2047 2048/* TDLS */ 2049int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2050 const u8 *peer, u8 action_code, u8 dialog_token, 2051 u16 status_code, u32 peer_capability, 2052 bool initiator, const u8 *extra_ies, 2053 size_t extra_ies_len); 2054int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2055 const u8 *peer, enum nl80211_tdls_operation oper); 2056void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2057int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2058 const u8 *addr, u8 oper_class, 2059 struct cfg80211_chan_def *chandef); 2060void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2061 struct net_device *dev, 2062 const u8 *addr); 2063void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2064 struct sk_buff *skb); 2065 2066extern const struct ethtool_ops ieee80211_ethtool_ops; 2067 2068#ifdef CONFIG_MAC80211_NOINLINE 2069#define debug_noinline noinline 2070#else 2071#define debug_noinline 2072#endif 2073 2074#endif /* IEEE80211_I_H */ 2075