net/mac80211/ieee80211_i.h

   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
  37 extern const struct cfg80211_ops mac80211_config_ops;
  38
  39 struct ieee80211_local;
  40
  41 /* Maximum number of broadcast/multicast frames to buffer when some of the
  42  * associated stations are using power saving. */
  43 #define AP_MAX_BC_BUFFER 128
  44
  45 /* Maximum number of frames buffered to all STAs, including multicast frames.
  46  * Note: increasing this limit increases the potential memory requirement. Each
  47  * frame can be up to about 2 kB long. */
  48 #define TOTAL_MAX_TX_BUFFER 512
  49
  50 /* Required encryption head and tailroom */
  51 #define IEEE80211_ENCRYPT_HEADROOM 8
  52 #define IEEE80211_ENCRYPT_TAILROOM 18
  53
  54 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  55  * reception of at least three fragmented frames. This limit can be increased
  56  * by changing this define, at the cost of slower frame reassembly and
  57  * increased memory use (about 2 kB of RAM per entry). */
  58 #define IEEE80211_FRAGMENT_MAX 4
  59
  60 /* power level hasn't been configured (or set to automatic) */
  61 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  62
  63 /*
  64  * Some APs experience problems when working with U-APSD. Decreasing the
  65  * probability of that happening by using legacy mode for all ACs but VO isn't
  66  * enough.
  67  *
  68  * Cisco 4410N originally forced us to enable VO by default only because it
  69  * treated non-VO ACs as legacy.
  70  *
  71  * However some APs (notably Netgear R7000) silently reclassify packets to
  72  * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
  73  * clients would never see some frames (e.g. ARP responses) or would fetch them
  74  * accidentally after a long time.
  75  *
  76  * It makes little sense to enable u-APSD queues by default because it needs
  77  * userspace applications to be aware of it to actually take advantage of the
  78  * possible additional powersavings. Implicitly depending on driver autotrigger
  79  * frame support doesn't make much sense.
  80  */
  81 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
  82
  83 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  84         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  85
  86 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  87
  88 struct ieee80211_fragment_entry {
  89         struct sk_buff_head skb_list;
  90         unsigned long first_frag_time;
  91         u16 seq;
  92         u16 extra_len;
  93         u16 last_frag;
  94         u8 rx_queue;
  95         bool check_sequential_pn; /* needed for CCMP/GCMP */
  96         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  97 };
  98
  99
 100 struct ieee80211_bss {
 101         u32 device_ts_beacon, device_ts_presp;
 102
 103         bool wmm_used;
 104         bool uapsd_supported;
 105
 106 #define IEEE80211_MAX_SUPP_RATES 32
 107         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 108         size_t supp_rates_len;
 109         struct ieee80211_rate *beacon_rate;
 110
 111         /*
 112          * During association, we save an ERP value from a probe response so
 113          * that we can feed ERP info to the driver when handling the
 114          * association completes. these fields probably won't be up-to-date
 115          * otherwise, you probably don't want to use them.
 116          */
 117         bool has_erp_value;
 118         u8 erp_value;
 119
 120         /* Keep track of the corruption of the last beacon/probe response. */
 121         u8 corrupt_data;
 122
 123         /* Keep track of what bits of information we have valid info for. */
 124         u8 valid_data;
 125 };
 126
 127 /**
 128  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 129  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 130  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 131  *
 132  * These are bss flags that are attached to a bss in the
 133  * @corrupt_data field of &struct ieee80211_bss.
 134  */
 135 enum ieee80211_bss_corrupt_data_flags {
 136         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 137         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 138 };
 139
 140 /**
 141  * enum ieee80211_valid_data_flags - BSS valid data flags
 142  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 143  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 144  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 145  *
 146  * These are bss flags that are attached to a bss in the
 147  * @valid_data field of &struct ieee80211_bss.  They show which parts
 148  * of the data structure were received as a result of an un-corrupted
 149  * beacon/probe response.
 150  */
 151 enum ieee80211_bss_valid_data_flags {
 152         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 153         IEEE80211_BSS_VALID_RATES               = BIT(2),
 154         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 155 };
 156
 157 typedef unsigned __bitwise__ ieee80211_tx_result;
 158 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 159 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 160 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 161
 162 #define IEEE80211_TX_UNICAST            BIT(1)
 163 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 164
 165 struct ieee80211_tx_data {
 166         struct sk_buff *skb;
 167         struct sk_buff_head skbs;
 168         struct ieee80211_local *local;
 169         struct ieee80211_sub_if_data *sdata;
 170         struct sta_info *sta;
 171         struct ieee80211_key *key;
 172         struct ieee80211_tx_rate rate;
 173
 174         unsigned int flags;
 175 };
 176
 177
 178 typedef unsigned __bitwise__ ieee80211_rx_result;
 179 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 180 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 181 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 182 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 183
 184 /**
 185  * enum ieee80211_packet_rx_flags - packet RX flags
 186  * @IEEE80211_RX_AMSDU: a-MSDU packet
 187  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 188  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 189  *
 190  * These are per-frame flags that are attached to a frame in the
 191  * @rx_flags field of &struct ieee80211_rx_status.
 192  */
 193 enum ieee80211_packet_rx_flags {
 194         IEEE80211_RX_AMSDU                      = BIT(3),
 195         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 196         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 197 };
 198
 199 /**
 200  * enum ieee80211_rx_flags - RX data flags
 201  *
 202  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 203  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 204  *      to cfg80211_report_obss_beacon().
 205  *
 206  * These flags are used across handling multiple interfaces
 207  * for a single frame.
 208  */
 209 enum ieee80211_rx_flags {
 210         IEEE80211_RX_CMNTR              = BIT(0),
 211         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 212 };
 213
 214 struct ieee80211_rx_data {
 215         struct napi_struct *napi;
 216         struct sk_buff *skb;
 217         struct ieee80211_local *local;
 218         struct ieee80211_sub_if_data *sdata;
 219         struct sta_info *sta;
 220         struct ieee80211_key *key;
 221
 222         unsigned int flags;
 223
 224         /*
 225          * Index into sequence numbers array, 0..16
 226          * since the last (16) is used for non-QoS,
 227          * will be 16 on non-QoS frames.
 228          */
 229         int seqno_idx;
 230
 231         /*
 232          * Index into the security IV/PN arrays, 0..16
 233          * since the last (16) is used for CCMP-encrypted
 234          * management frames, will be set to 16 on mgmt
 235          * frames and 0 on non-QoS frames.
 236          */
 237         int security_idx;
 238
 239         u32 tkip_iv32;
 240         u16 tkip_iv16;
 241 };
 242
 243 struct ieee80211_csa_settings {
 244         const u16 *counter_offsets_beacon;
 245         const u16 *counter_offsets_presp;
 246
 247         int n_counter_offsets_beacon;
 248         int n_counter_offsets_presp;
 249
 250         u8 count;
 251 };
 252
 253 struct beacon_data {
 254         u8 *head, *tail;
 255         int head_len, tail_len;
 256         struct ieee80211_meshconf_ie *meshconf;
 257         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 258         u8 csa_current_counter;
 259         struct rcu_head rcu_head;
 260 };
 261
 262 struct probe_resp {
 263         struct rcu_head rcu_head;
 264         int len;
 265         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 266         u8 data[0];
 267 };
 268
 269 struct ps_data {
 270         /* yes, this looks ugly, but guarantees that we can later use
 271          * bitmap_empty :)
 272          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 273         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 274                         __aligned(__alignof__(unsigned long));
 275         struct sk_buff_head bc_buf;
 276         atomic_t num_sta_ps; /* number of stations in PS mode */
 277         int dtim_count;
 278         bool dtim_bc_mc;
 279 };
 280
 281 struct ieee80211_if_ap {
 282         struct beacon_data __rcu *beacon;
 283         struct probe_resp __rcu *probe_resp;
 284
 285         /* to be used after channel switch. */
 286         struct cfg80211_beacon_data *next_beacon;
 287         struct list_head vlans; /* write-protected with RTNL and local->mtx */
 288
 289         struct ps_data ps;
 290         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 291         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 292                          driver_smps_mode; /* smps mode request */
 293
 294         struct work_struct request_smps_work;
 295 };
 296
 297 struct ieee80211_if_wds {
 298         struct sta_info *sta;
 299         u8 remote_addr[ETH_ALEN];
 300 };
 301
 302 struct ieee80211_if_vlan {
 303         struct list_head list; /* write-protected with RTNL and local->mtx */
 304
 305         /* used for all tx if the VLAN is configured to 4-addr mode */
 306         struct sta_info __rcu *sta;
 307 };
 308
 309 struct mesh_stats {
 310         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 311         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 312         __u32 fwded_frames;             /* Mesh total forwarded frames */
 313         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 314         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 315         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 316 };
 317
 318 #define PREQ_Q_F_START          0x1
 319 #define PREQ_Q_F_REFRESH        0x2
 320 struct mesh_preq_queue {
 321         struct list_head list;
 322         u8 dst[ETH_ALEN];
 323         u8 flags;
 324 };
 325
 326 struct ieee80211_roc_work {
 327         struct list_head list;
 328         struct list_head dependents;
 329
 330         struct delayed_work work;
 331
 332         struct ieee80211_sub_if_data *sdata;
 333
 334         struct ieee80211_channel *chan;
 335
 336         bool started, abort, hw_begun, notified;
 337         bool to_be_freed;
 338         bool on_channel;
 339
 340         unsigned long hw_start_time;
 341
 342         u32 duration, req_duration;
 343         struct sk_buff *frame;
 344         u64 cookie, mgmt_tx_cookie;
 345         enum ieee80211_roc_type type;
 346 };
 347
 348 /* flags used in struct ieee80211_if_managed.flags */
 349 enum ieee80211_sta_flags {
 350         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 351         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 352         IEEE80211_STA_DISABLE_HT        = BIT(4),
 353         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 354         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 355         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 356         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 357         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 358         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 359         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 360         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 361         IEEE80211_STA_DISABLE_WMM       = BIT(14),
 362         IEEE80211_STA_ENABLE_RRM        = BIT(15),
 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 timeout_started;
 375
 376         u16 sae_trans, sae_status;
 377         size_t data_len;
 378         u8 data[];
 379 };
 380
 381 struct ieee80211_mgd_assoc_data {
 382         struct cfg80211_bss *bss;
 383         const u8 *supp_rates;
 384
 385         unsigned long timeout;
 386         int tries;
 387
 388         u16 capability;
 389         u8 prev_bssid[ETH_ALEN];
 390         u8 ssid[IEEE80211_MAX_SSID_LEN];
 391         u8 ssid_len;
 392         u8 supp_rates_len;
 393         bool wmm, uapsd;
 394         bool need_beacon;
 395         bool synced;
 396         bool timeout_started;
 397
 398         u8 ap_ht_param;
 399
 400         struct ieee80211_vht_cap ap_vht_cap;
 401
 402         size_t ie_len;
 403         u8 ie[];
 404 };
 405
 406 struct ieee80211_sta_tx_tspec {
 407         /* timestamp of the first packet in the time slice */
 408         unsigned long time_slice_start;
 409
 410         u32 admitted_time; /* in usecs, unlike over the air */
 411         u8 tsid;
 412         s8 up; /* signed to be able to invalidate with -1 during teardown */
 413
 414         /* consumed TX time in microseconds in the time slice */
 415         u32 consumed_tx_time;
 416         enum {
 417                 TX_TSPEC_ACTION_NONE = 0,
 418                 TX_TSPEC_ACTION_DOWNGRADE,
 419                 TX_TSPEC_ACTION_STOP_DOWNGRADE,
 420         } action;
 421         bool downgraded;
 422 };
 423
 424 DECLARE_EWMA(beacon_signal, 16, 4)
 425
 426 struct ieee80211_if_managed {
 427         struct timer_list timer;
 428         struct timer_list conn_mon_timer;
 429         struct timer_list bcn_mon_timer;
 430         struct timer_list chswitch_timer;
 431         struct work_struct monitor_work;
 432         struct work_struct chswitch_work;
 433         struct work_struct beacon_connection_loss_work;
 434         struct work_struct csa_connection_drop_work;
 435
 436         unsigned long beacon_timeout;
 437         unsigned long probe_timeout;
 438         int probe_send_count;
 439         bool nullfunc_failed;
 440         bool connection_loss;
 441
 442         struct cfg80211_bss *associated;
 443         struct ieee80211_mgd_auth_data *auth_data;
 444         struct ieee80211_mgd_assoc_data *assoc_data;
 445
 446         u8 bssid[ETH_ALEN];
 447
 448         u16 aid;
 449
 450         bool powersave; /* powersave requested for this iface */
 451         bool broken_ap; /* AP is broken -- turn off powersave */
 452         bool have_beacon;
 453         u8 dtim_period;
 454         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 455                                  driver_smps_mode; /* smps mode request */
 456
 457         struct work_struct request_smps_work;
 458
 459         unsigned int flags;
 460
 461         bool csa_waiting_bcn;
 462         bool csa_ignored_same_chan;
 463
 464         bool beacon_crc_valid;
 465         u32 beacon_crc;
 466
 467         bool status_acked;
 468         bool status_received;
 469         __le16 status_fc;
 470
 471         enum {
 472                 IEEE80211_MFP_DISABLED,
 473                 IEEE80211_MFP_OPTIONAL,
 474                 IEEE80211_MFP_REQUIRED
 475         } mfp; /* management frame protection */
 476
 477         /*
 478          * Bitmask of enabled u-apsd queues,
 479          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 480          * to take effect.
 481          */
 482         unsigned int uapsd_queues;
 483
 484         /*
 485          * Maximum number of buffered frames AP can deliver during a
 486          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 487          * Needs a new association to take effect.
 488          */
 489         unsigned int uapsd_max_sp_len;
 490
 491         int wmm_last_param_set;
 492
 493         u8 use_4addr;
 494
 495         s16 p2p_noa_index;
 496
 497         struct ewma_beacon_signal ave_beacon_signal;
 498
 499         /*
 500          * Number of Beacon frames used in ave_beacon_signal. This can be used
 501          * to avoid generating less reliable cqm events that would be based
 502          * only on couple of received frames.
 503          */
 504         unsigned int count_beacon_signal;
 505
 506         /* Number of times beacon loss was invoked. */
 507         unsigned int beacon_loss_count;
 508
 509         /*
 510          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 511          * that triggered a cqm event. 0 indicates that no event has been
 512          * generated for the current association.
 513          */
 514         int last_cqm_event_signal;
 515
 516         /*
 517          * State variables for keeping track of RSSI of the AP currently
 518          * connected to and informing driver when RSSI has gone
 519          * below/above a certain threshold.
 520          */
 521         int rssi_min_thold, rssi_max_thold;
 522         int last_ave_beacon_signal;
 523
 524         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 525         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 526         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 527         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 528
 529         /* TDLS support */
 530         u8 tdls_peer[ETH_ALEN] __aligned(2);
 531         struct delayed_work tdls_peer_del_work;
 532         struct sk_buff *orig_teardown_skb; /* The original teardown skb */
 533         struct sk_buff *teardown_skb; /* A copy to send through the AP */
 534         spinlock_t teardown_lock; /* To lock changing teardown_skb */
 535         bool tdls_chan_switch_prohibited;
 536         bool tdls_wider_bw_prohibited;
 537
 538         /* WMM-AC TSPEC support */
 539         struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
 540         /* Use a separate work struct so that we can do something here
 541          * while the sdata->work is flushing the queues, for example.
 542          * otherwise, in scenarios where we hardly get any traffic out
 543          * on the BE queue, but there's a lot of VO traffic, we might
 544          * get stuck in a downgraded situation and flush takes forever.
 545          */
 546         struct delayed_work tx_tspec_wk;
 547 };
 548
 549 struct ieee80211_if_ibss {
 550         struct timer_list timer;
 551         struct work_struct csa_connection_drop_work;
 552
 553         unsigned long last_scan_completed;
 554
 555         u32 basic_rates;
 556
 557         bool fixed_bssid;
 558         bool fixed_channel;
 559         bool privacy;
 560
 561         bool control_port;
 562         bool userspace_handles_dfs;
 563
 564         u8 bssid[ETH_ALEN] __aligned(2);
 565         u8 ssid[IEEE80211_MAX_SSID_LEN];
 566         u8 ssid_len, ie_len;
 567         u8 *ie;
 568         struct cfg80211_chan_def chandef;
 569
 570         unsigned long ibss_join_req;
 571         /* probe response/beacon for IBSS */
 572         struct beacon_data __rcu *presp;
 573
 574         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 575         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 576
 577         spinlock_t incomplete_lock;
 578         struct list_head incomplete_stations;
 579
 580         enum {
 581                 IEEE80211_IBSS_MLME_SEARCH,
 582                 IEEE80211_IBSS_MLME_JOINED,
 583         } state;
 584 };
 585
 586 /**
 587  * struct ieee80211_if_ocb - OCB mode state
 588  *
 589  * @housekeeping_timer: timer for periodic invocation of a housekeeping task
 590  * @wrkq_flags: OCB deferred task action
 591  * @incomplete_lock: delayed STA insertion lock
 592  * @incomplete_stations: list of STAs waiting for delayed insertion
 593  * @joined: indication if the interface is connected to an OCB network
 594  */
 595 struct ieee80211_if_ocb {
 596         struct timer_list housekeeping_timer;
 597         unsigned long wrkq_flags;
 598
 599         spinlock_t incomplete_lock;
 600         struct list_head incomplete_stations;
 601
 602         bool joined;
 603 };
 604
 605 /**
 606  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 607  *
 608  * these declarations define the interface, which enables
 609  * vendor-specific mesh synchronization
 610  *
 611  */
 612 struct ieee802_11_elems;
 613 struct ieee80211_mesh_sync_ops {
 614         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 615                              u16 stype,
 616                              struct ieee80211_mgmt *mgmt,
 617                              struct ieee802_11_elems *elems,
 618                              struct ieee80211_rx_status *rx_status);
 619
 620         /* should be called with beacon_data under RCU read lock */
 621         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 622                             struct beacon_data *beacon);
 623         /* add other framework functions here */
 624 };
 625
 626 struct mesh_csa_settings {
 627         struct rcu_head rcu_head;
 628         struct cfg80211_csa_settings settings;
 629 };
 630
 631 struct ieee80211_if_mesh {
 632         struct timer_list housekeeping_timer;
 633         struct timer_list mesh_path_timer;
 634         struct timer_list mesh_path_root_timer;
 635
 636         unsigned long wrkq_flags;
 637         unsigned long mbss_changed;
 638
 639         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 640         size_t mesh_id_len;
 641         /* Active Path Selection Protocol Identifier */
 642         u8 mesh_pp_id;
 643         /* Active Path Selection Metric Identifier */
 644         u8 mesh_pm_id;
 645         /* Congestion Control Mode Identifier */
 646         u8 mesh_cc_id;
 647         /* Synchronization Protocol Identifier */
 648         u8 mesh_sp_id;
 649         /* Authentication Protocol Identifier */
 650         u8 mesh_auth_id;
 651         /* Local mesh Sequence Number */
 652         u32 sn;
 653         /* Last used PREQ ID */
 654         u32 preq_id;
 655         atomic_t mpaths;
 656         /* Timestamp of last SN update */
 657         unsigned long last_sn_update;
 658         /* Time when it's ok to send next PERR */
 659         unsigned long next_perr;
 660         /* Timestamp of last PREQ sent */
 661         unsigned long last_preq;
 662         struct mesh_rmc *rmc;
 663         spinlock_t mesh_preq_queue_lock;
 664         struct mesh_preq_queue preq_queue;
 665         int preq_queue_len;
 666         struct mesh_stats mshstats;
 667         struct mesh_config mshcfg;
 668         atomic_t estab_plinks;
 669         u32 mesh_seqnum;
 670         bool accepting_plinks;
 671         int num_gates;
 672         struct beacon_data __rcu *beacon;
 673         const u8 *ie;
 674         u8 ie_len;
 675         enum {
 676                 IEEE80211_MESH_SEC_NONE = 0x0,
 677                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 678                 IEEE80211_MESH_SEC_SECURED = 0x2,
 679         } security;
 680         bool user_mpm;
 681         /* Extensible Synchronization Framework */
 682         const struct ieee80211_mesh_sync_ops *sync_ops;
 683         s64 sync_offset_clockdrift_max;
 684         spinlock_t sync_offset_lock;
 685         /* mesh power save */
 686         enum nl80211_mesh_power_mode nonpeer_pm;
 687         int ps_peers_light_sleep;
 688         int ps_peers_deep_sleep;
 689         struct ps_data ps;
 690         /* Channel Switching Support */
 691         struct mesh_csa_settings __rcu *csa;
 692         enum {
 693                 IEEE80211_MESH_CSA_ROLE_NONE,
 694                 IEEE80211_MESH_CSA_ROLE_INIT,
 695                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 696         } csa_role;
 697         u8 chsw_ttl;
 698         u16 pre_value;
 699
 700         /* offset from skb->data while building IE */
 701         int meshconf_offset;
 702 };
 703
 704 #ifdef CONFIG_MAC80211_MESH
 705 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 706         do { (msh)->mshstats.name++; } while (0)
 707 #else
 708 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 709         do { } while (0)
 710 #endif
 711
 712 /**
 713  * enum ieee80211_sub_if_data_flags - virtual interface flags
 714  *
 715  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 716  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 717  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 718  *      associated stations and deliver multicast frames both
 719  *      back to wireless media and to the local net stack.
 720  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 721  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 722  * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability
 723  */
 724 enum ieee80211_sub_if_data_flags {
 725         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 726         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 727         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 728         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 729         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 730         IEEE80211_SDATA_MU_MIMO_OWNER           = BIT(6),
 731 };
 732
 733 /**
 734  * enum ieee80211_sdata_state_bits - virtual interface state bits
 735  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 736  *      mirrors netif_running() but is separate for interface type
 737  *      change handling while the interface is up
 738  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 739  *      mode, so queues are stopped
 740  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 741  *      to offchannel, reset when offchannel returns
 742  */
 743 enum ieee80211_sdata_state_bits {
 744         SDATA_STATE_RUNNING,
 745         SDATA_STATE_OFFCHANNEL,
 746         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 747 };
 748
 749 /**
 750  * enum ieee80211_chanctx_mode - channel context configuration mode
 751  *
 752  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 753  *      multiple interfaces
 754  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 755  *      only by a single interface. This can be used for example for
 756  *      non-fixed channel IBSS.
 757  */
 758 enum ieee80211_chanctx_mode {
 759         IEEE80211_CHANCTX_SHARED,
 760         IEEE80211_CHANCTX_EXCLUSIVE
 761 };
 762
 763 /**
 764  * enum ieee80211_chanctx_replace_state - channel context replacement state
 765  *
 766  * This is used for channel context in-place reservations that require channel
 767  * context switch/swap.
 768  *
 769  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 770  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 771  *      by a (not yet registered) channel context pointed by %replace_ctx.
 772  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 773  *      replaces an existing channel context pointed to by %replace_ctx.
 774  */
 775 enum ieee80211_chanctx_replace_state {
 776         IEEE80211_CHANCTX_REPLACE_NONE,
 777         IEEE80211_CHANCTX_WILL_BE_REPLACED,
 778         IEEE80211_CHANCTX_REPLACES_OTHER,
 779 };
 780
 781 struct ieee80211_chanctx {
 782         struct list_head list;
 783         struct rcu_head rcu_head;
 784
 785         struct list_head assigned_vifs;
 786         struct list_head reserved_vifs;
 787
 788         enum ieee80211_chanctx_replace_state replace_state;
 789         struct ieee80211_chanctx *replace_ctx;
 790
 791         enum ieee80211_chanctx_mode mode;
 792         bool driver_present;
 793
 794         struct ieee80211_chanctx_conf conf;
 795 };
 796
 797 struct mac80211_qos_map {
 798         struct cfg80211_qos_map qos_map;
 799         struct rcu_head rcu_head;
 800 };
 801
 802 enum txq_info_flags {
 803         IEEE80211_TXQ_STOP,
 804         IEEE80211_TXQ_AMPDU,
 805 };
 806
 807 struct txq_info {
 808         struct sk_buff_head queue;
 809         unsigned long flags;
 810
 811         /* keep last! */
 812         struct ieee80211_txq txq;
 813 };
 814
 815 struct ieee80211_sub_if_data {
 816         struct list_head list;
 817
 818         struct wireless_dev wdev;
 819
 820         /* keys */
 821         struct list_head key_list;
 822
 823         /* count for keys needing tailroom space allocation */
 824         int crypto_tx_tailroom_needed_cnt;
 825         int crypto_tx_tailroom_pending_dec;
 826         struct delayed_work dec_tailroom_needed_wk;
 827
 828         struct net_device *dev;
 829         struct ieee80211_local *local;
 830
 831         unsigned int flags;
 832
 833         unsigned long state;
 834
 835         char name[IFNAMSIZ];
 836
 837         /* Fragment table for host-based reassembly */
 838         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 839         unsigned int fragment_next;
 840
 841         /* TID bitmap for NoAck policy */
 842         u16 noack_map;
 843
 844         /* bit field of ACM bits (BIT(802.1D tag)) */
 845         u8 wmm_acm;
 846
 847         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 848         struct ieee80211_key __rcu *default_unicast_key;
 849         struct ieee80211_key __rcu *default_multicast_key;
 850         struct ieee80211_key __rcu *default_mgmt_key;
 851
 852         u16 sequence_number;
 853         __be16 control_port_protocol;
 854         bool control_port_no_encrypt;
 855         int encrypt_headroom;
 856
 857         atomic_t txqs_len[IEEE80211_NUM_ACS];
 858         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 859         struct mac80211_qos_map __rcu *qos_map;
 860
 861         struct work_struct csa_finalize_work;
 862         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 863         struct cfg80211_chan_def csa_chandef;
 864
 865         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 866         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 867
 868         /* context reservation -- protected with chanctx_mtx */
 869         struct ieee80211_chanctx *reserved_chanctx;
 870         struct cfg80211_chan_def reserved_chandef;
 871         bool reserved_radar_required;
 872         bool reserved_ready;
 873
 874         /* used to reconfigure hardware SM PS */
 875         struct work_struct recalc_smps;
 876
 877         struct work_struct work;
 878         struct sk_buff_head skb_queue;
 879
 880         u8 needed_rx_chains;
 881         enum ieee80211_smps_mode smps_mode;
 882
 883         int user_power_level; /* in dBm */
 884         int ap_power_level; /* in dBm */
 885
 886         bool radar_required;
 887         struct delayed_work dfs_cac_timer_work;
 888
 889         /*
 890          * AP this belongs to: self in AP mode and
 891          * corresponding AP in VLAN mode, NULL for
 892          * all others (might be needed later in IBSS)
 893          */
 894         struct ieee80211_if_ap *bss;
 895
 896         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 897         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 898
 899         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 900         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 901
 902         bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS];
 903         u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX];
 904
 905         union {
 906                 struct ieee80211_if_ap ap;
 907                 struct ieee80211_if_wds wds;
 908                 struct ieee80211_if_vlan vlan;
 909                 struct ieee80211_if_managed mgd;
 910                 struct ieee80211_if_ibss ibss;
 911                 struct ieee80211_if_mesh mesh;
 912                 struct ieee80211_if_ocb ocb;
 913                 u32 mntr_flags;
 914         } u;
 915
 916 #ifdef CONFIG_MAC80211_DEBUGFS
 917         struct {
 918                 struct dentry *subdir_stations;
 919                 struct dentry *default_unicast_key;
 920                 struct dentry *default_multicast_key;
 921                 struct dentry *default_mgmt_key;
 922         } debugfs;
 923 #endif
 924
 925         /* must be last, dynamically sized area in this! */
 926         struct ieee80211_vif vif;
 927 };
 928
 929 static inline
 930 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 931 {
 932         return container_of(p, struct ieee80211_sub_if_data, vif);
 933 }
 934
 935 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 936         __acquires(&sdata->wdev.mtx)
 937 {
 938         mutex_lock(&sdata->wdev.mtx);
 939         __acquire(&sdata->wdev.mtx);
 940 }
 941
 942 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 943         __releases(&sdata->wdev.mtx)
 944 {
 945         mutex_unlock(&sdata->wdev.mtx);
 946         __release(&sdata->wdev.mtx);
 947 }
 948
 949 #define sdata_dereference(p, sdata) \
 950         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 951
 952 static inline void
 953 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 954 {
 955         lockdep_assert_held(&sdata->wdev.mtx);
 956 }
 957
 958 static inline enum ieee80211_band
 959 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 960 {
 961         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 962         struct ieee80211_chanctx_conf *chanctx_conf;
 963
 964         rcu_read_lock();
 965         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 966         if (!WARN_ON(!chanctx_conf))
 967                 band = chanctx_conf->def.chan->band;
 968         rcu_read_unlock();
 969
 970         return band;
 971 }
 972
 973 static inline int
 974 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 975 {
 976         switch (chandef->width) {
 977         case NL80211_CHAN_WIDTH_5:
 978                 return 2;
 979         case NL80211_CHAN_WIDTH_10:
 980                 return 1;
 981         default:
 982                 return 0;
 983         }
 984 }
 985
 986 static inline int
 987 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 988 {
 989         struct ieee80211_chanctx_conf *chanctx_conf;
 990         int shift = 0;
 991
 992         rcu_read_lock();
 993         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 994         if (chanctx_conf)
 995                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 996         rcu_read_unlock();
 997
 998         return shift;
 999 }
1000
1001 struct ieee80211_rx_agg {
1002         u8 addr[ETH_ALEN];
1003         u16 tid;
1004 };
1005
1006 enum sdata_queue_type {
1007         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
1008         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
1009         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
1010         IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
1011         IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
1012 };
1013
1014 enum {
1015         IEEE80211_RX_MSG        = 1,
1016         IEEE80211_TX_STATUS_MSG = 2,
1017 };
1018
1019 enum queue_stop_reason {
1020         IEEE80211_QUEUE_STOP_REASON_DRIVER,
1021         IEEE80211_QUEUE_STOP_REASON_PS,
1022         IEEE80211_QUEUE_STOP_REASON_CSA,
1023         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1024         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1025         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1026         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1027         IEEE80211_QUEUE_STOP_REASON_FLUSH,
1028         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1029         IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1030
1031         IEEE80211_QUEUE_STOP_REASONS,
1032 };
1033
1034 #ifdef CONFIG_MAC80211_LEDS
1035 struct tpt_led_trigger {
1036         char name[32];
1037         const struct ieee80211_tpt_blink *blink_table;
1038         unsigned int blink_table_len;
1039         struct timer_list timer;
1040         unsigned long prev_traffic;
1041         unsigned long tx_bytes, rx_bytes;
1042         unsigned int active, want;
1043         bool running;
1044 };
1045 #endif
1046
1047 /**
1048  * mac80211 scan flags - currently active scan mode
1049  *
1050  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1051  *      well be on the operating channel
1052  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1053  *      determine if we are on the operating channel or not
1054  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1055  *      channel. This should not interrupt normal traffic.
1056  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1057  *      that the scan completed.
1058  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1059  *      a scan complete for an aborted scan.
1060  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1061  *      cancelled.
1062  */
1063 enum {
1064         SCAN_SW_SCANNING,
1065         SCAN_HW_SCANNING,
1066         SCAN_ONCHANNEL_SCANNING,
1067         SCAN_COMPLETED,
1068         SCAN_ABORTED,
1069         SCAN_HW_CANCELLED,
1070 };
1071
1072 /**
1073  * enum mac80211_scan_state - scan state machine states
1074  *
1075  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1076  *      determines if we should keep on scanning or switch back to the
1077  *      operating channel
1078  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1079  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1080  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1081  *      send out data
1082  * @SCAN_RESUME: Resume the scan and scan the next channel
1083  * @SCAN_ABORT: Abort the scan and go back to operating channel
1084  */
1085 enum mac80211_scan_state {
1086         SCAN_DECISION,
1087         SCAN_SET_CHANNEL,
1088         SCAN_SEND_PROBE,
1089         SCAN_SUSPEND,
1090         SCAN_RESUME,
1091         SCAN_ABORT,
1092 };
1093
1094 struct ieee80211_local {
1095         /* embed the driver visible part.
1096          * don't cast (use the static inlines below), but we keep
1097          * it first anyway so they become a no-op */
1098         struct ieee80211_hw hw;
1099
1100         const struct ieee80211_ops *ops;
1101
1102         /*
1103          * private workqueue to mac80211. mac80211 makes this accessible
1104          * via ieee80211_queue_work()
1105          */
1106         struct workqueue_struct *workqueue;
1107
1108         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1109         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1110         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1111         spinlock_t queue_stop_reason_lock;
1112
1113         int open_count;
1114         int monitors, cooked_mntrs;
1115         /* number of interfaces with corresponding FIF_ flags */
1116         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1117             fif_probe_req;
1118         int probe_req_reg;
1119         unsigned int filter_flags; /* FIF_* */
1120
1121         bool wiphy_ciphers_allocated;
1122
1123         bool use_chanctx;
1124
1125         /* protects the aggregated multicast list and filter calls */
1126         spinlock_t filter_lock;
1127
1128         /* used for uploading changed mc list */
1129         struct work_struct reconfig_filter;
1130
1131         /* aggregated multicast list */
1132         struct netdev_hw_addr_list mc_list;
1133
1134         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1135
1136         /*
1137          * suspended is true if we finished all the suspend _and_ we have
1138          * not yet come up from resume. This is to be used by mac80211
1139          * to ensure driver sanity during suspend and mac80211's own
1140          * sanity. It can eventually be used for WoW as well.
1141          */
1142         bool suspended;
1143
1144         /*
1145          * Resuming is true while suspended, but when we're reprogramming the
1146          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1147          * again even though some other parts of the stack are still suspended
1148          * and we still drop received frames to avoid waking the stack.
1149          */
1150         bool resuming;
1151
1152         /*
1153          * quiescing is true during the suspend process _only_ to
1154          * ease timer cancelling etc.
1155          */
1156         bool quiescing;
1157
1158         /* device is started */
1159         bool started;
1160
1161         /* device is during a HW reconfig */
1162         bool in_reconfig;
1163
1164         /* wowlan is enabled -- don't reconfig on resume */
1165         bool wowlan;
1166
1167         struct work_struct radar_detected_work;
1168
1169         /* number of RX chains the hardware has */
1170         u8 rx_chains;
1171
1172         int tx_headroom; /* required headroom for hardware/radiotap */
1173
1174         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1175          * added to skb_queue will be processed, but frames in
1176          * skb_queue_unreliable may be dropped if the total length of these
1177          * queues increases over the limit. */
1178 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1179         struct tasklet_struct tasklet;
1180         struct sk_buff_head skb_queue;
1181         struct sk_buff_head skb_queue_unreliable;
1182
1183         spinlock_t rx_path_lock;
1184
1185         /* Station data */
1186         /*
1187          * The mutex only protects the list, hash table and
1188          * counter, reads are done with RCU.
1189          */
1190         struct mutex sta_mtx;
1191         spinlock_t tim_lock;
1192         unsigned long num_sta;
1193         struct list_head sta_list;
1194         struct rhashtable sta_hash;
1195         struct timer_list sta_cleanup;
1196         int sta_generation;
1197
1198         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1199         struct tasklet_struct tx_pending_tasklet;
1200
1201         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1202
1203         /* number of interfaces with allmulti RX */
1204         atomic_t iff_allmultis;
1205
1206         struct rate_control_ref *rate_ctrl;
1207
1208         struct crypto_cipher *wep_tx_tfm;
1209         struct crypto_cipher *wep_rx_tfm;
1210         u32 wep_iv;
1211
1212         /* see iface.c */
1213         struct list_head interfaces;
1214         struct mutex iflist_mtx;
1215
1216         /*
1217          * Key mutex, protects sdata's key_list and sta_info's
1218          * key pointers (write access, they're RCU.)
1219          */
1220         struct mutex key_mtx;
1221
1222         /* mutex for scan and work locking */
1223         struct mutex mtx;
1224
1225         /* Scanning and BSS list */
1226         unsigned long scanning;
1227         struct cfg80211_ssid scan_ssid;
1228         struct cfg80211_scan_request *int_scan_req;
1229         struct cfg80211_scan_request __rcu *scan_req;
1230         struct ieee80211_scan_request *hw_scan_req;
1231         struct cfg80211_chan_def scan_chandef;
1232         enum ieee80211_band hw_scan_band;
1233         int scan_channel_idx;
1234         int scan_ies_len;
1235         int hw_scan_ies_bufsize;
1236
1237         struct work_struct sched_scan_stopped_work;
1238         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1239         struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1240         u8 scan_addr[ETH_ALEN];
1241
1242         unsigned long leave_oper_channel_time;
1243         enum mac80211_scan_state next_scan_state;
1244         struct delayed_work scan_work;
1245         struct ieee80211_sub_if_data __rcu *scan_sdata;
1246         /* For backward compatibility only -- do not use */
1247         struct cfg80211_chan_def _oper_chandef;
1248
1249         /* Temporary remain-on-channel for off-channel operations */
1250         struct ieee80211_channel *tmp_channel;
1251
1252         /* channel contexts */
1253         struct list_head chanctx_list;
1254         struct mutex chanctx_mtx;
1255
1256 #ifdef CONFIG_MAC80211_LEDS
1257         struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1258         struct led_trigger tpt_led;
1259         atomic_t tx_led_active, rx_led_active, assoc_led_active;
1260         atomic_t radio_led_active, tpt_led_active;
1261         struct tpt_led_trigger *tpt_led_trigger;
1262 #endif
1263
1264 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1265         /* SNMP counters */
1266         /* dot11CountersTable */
1267         u32 dot11TransmittedFragmentCount;
1268         u32 dot11MulticastTransmittedFrameCount;
1269         u32 dot11FailedCount;
1270         u32 dot11RetryCount;
1271         u32 dot11MultipleRetryCount;
1272         u32 dot11FrameDuplicateCount;
1273         u32 dot11ReceivedFragmentCount;
1274         u32 dot11MulticastReceivedFrameCount;
1275         u32 dot11TransmittedFrameCount;
1276
1277         /* TX/RX handler statistics */
1278         unsigned int tx_handlers_drop;
1279         unsigned int tx_handlers_queued;
1280         unsigned int tx_handlers_drop_wep;
1281         unsigned int tx_handlers_drop_not_assoc;
1282         unsigned int tx_handlers_drop_unauth_port;
1283         unsigned int rx_handlers_drop;
1284         unsigned int rx_handlers_queued;
1285         unsigned int rx_handlers_drop_nullfunc;
1286         unsigned int rx_handlers_drop_defrag;
1287         unsigned int tx_expand_skb_head;
1288         unsigned int tx_expand_skb_head_cloned;
1289         unsigned int rx_expand_skb_head_defrag;
1290         unsigned int rx_handlers_fragments;
1291         unsigned int tx_status_drop;
1292 #define I802_DEBUG_INC(c) (c)++
1293 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1294 #define I802_DEBUG_INC(c) do { } while (0)
1295 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1296
1297
1298         int total_ps_buffered; /* total number of all buffered unicast and
1299                                 * multicast packets for power saving stations
1300                                 */
1301
1302         bool pspolling;
1303         bool offchannel_ps_enabled;
1304         /*
1305          * PS can only be enabled when we have exactly one managed
1306          * interface (and monitors) in PS, this then points there.
1307          */
1308         struct ieee80211_sub_if_data *ps_sdata;
1309         struct work_struct dynamic_ps_enable_work;
1310         struct work_struct dynamic_ps_disable_work;
1311         struct timer_list dynamic_ps_timer;
1312         struct notifier_block ifa_notifier;
1313         struct notifier_block ifa6_notifier;
1314
1315         /*
1316          * The dynamic ps timeout configured from user space via WEXT -
1317          * this will override whatever chosen by mac80211 internally.
1318          */
1319         int dynamic_ps_forced_timeout;
1320
1321         int user_power_level; /* in dBm, for all interfaces */
1322
1323         enum ieee80211_smps_mode smps_mode;
1324
1325         struct work_struct restart_work;
1326
1327 #ifdef CONFIG_MAC80211_DEBUGFS
1328         struct local_debugfsdentries {
1329                 struct dentry *rcdir;
1330                 struct dentry *keys;
1331         } debugfs;
1332 #endif
1333
1334         /*
1335          * Remain-on-channel support
1336          */
1337         struct list_head roc_list;
1338         struct work_struct hw_roc_start, hw_roc_done;
1339         unsigned long hw_roc_start_time;
1340         u64 roc_cookie_counter;
1341
1342         struct idr ack_status_frames;
1343         spinlock_t ack_status_lock;
1344
1345         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1346
1347         /* virtual monitor interface */
1348         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1349         struct cfg80211_chan_def monitor_chandef;
1350
1351         /* extended capabilities provided by mac80211 */
1352         u8 ext_capa[8];
1353
1354         /* TDLS channel switch */
1355         struct work_struct tdls_chsw_work;
1356         struct sk_buff_head skb_queue_tdls_chsw;
1357 };
1358
1359 static inline struct ieee80211_sub_if_data *
1360 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1361 {
1362         return netdev_priv(dev);
1363 }
1364
1365 static inline struct ieee80211_sub_if_data *
1366 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1367 {
1368         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1369 }
1370
1371 /* this struct represents 802.11n's RA/TID combination */
1372 struct ieee80211_ra_tid {
1373         u8 ra[ETH_ALEN];
1374         u16 tid;
1375 };
1376
1377 /* this struct holds the value parsing from channel switch IE  */
1378 struct ieee80211_csa_ie {
1379         struct cfg80211_chan_def chandef;
1380         u8 mode;
1381         u8 count;
1382         u8 ttl;
1383         u16 pre_value;
1384 };
1385
1386 /* Parsed Information Elements */
1387 struct ieee802_11_elems {
1388         const u8 *ie_start;
1389         size_t total_len;
1390
1391         /* pointers to IEs */
1392         const struct ieee80211_tdls_lnkie *lnk_id;
1393         const struct ieee80211_ch_switch_timing *ch_sw_timing;
1394         const u8 *ext_capab;
1395         const u8 *ssid;
1396         const u8 *supp_rates;
1397         const u8 *ds_params;
1398         const struct ieee80211_tim_ie *tim;
1399         const u8 *challenge;
1400         const u8 *rsn;
1401         const u8 *erp_info;
1402         const u8 *ext_supp_rates;
1403         const u8 *wmm_info;
1404         const u8 *wmm_param;
1405         const struct ieee80211_ht_cap *ht_cap_elem;
1406         const struct ieee80211_ht_operation *ht_operation;
1407         const struct ieee80211_vht_cap *vht_cap_elem;
1408         const struct ieee80211_vht_operation *vht_operation;
1409         const struct ieee80211_meshconf_ie *mesh_config;
1410         const u8 *mesh_id;
1411         const u8 *peering;
1412         const __le16 *awake_window;
1413         const u8 *preq;
1414         const u8 *prep;
1415         const u8 *perr;
1416         const struct ieee80211_rann_ie *rann;
1417         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1418         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1419         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1420         const u8 *country_elem;
1421         const u8 *pwr_constr_elem;
1422         const u8 *cisco_dtpc_elem;
1423         const struct ieee80211_timeout_interval_ie *timeout_int;
1424         const u8 *opmode_notif;
1425         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1426         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1427
1428         /* length of them, respectively */
1429         u8 ext_capab_len;
1430         u8 ssid_len;
1431         u8 supp_rates_len;
1432         u8 tim_len;
1433         u8 challenge_len;
1434         u8 rsn_len;
1435         u8 ext_supp_rates_len;
1436         u8 wmm_info_len;
1437         u8 wmm_param_len;
1438         u8 mesh_id_len;
1439         u8 peering_len;
1440         u8 preq_len;
1441         u8 prep_len;
1442         u8 perr_len;
1443         u8 country_elem_len;
1444
1445         /* whether a parse error occurred while retrieving these elements */
1446         bool parse_error;
1447 };
1448
1449 static inline struct ieee80211_local *hw_to_local(
1450         struct ieee80211_hw *hw)
1451 {
1452         return container_of(hw, struct ieee80211_local, hw);
1453 }
1454
1455 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1456 {
1457         return container_of(txq, struct txq_info, txq);
1458 }
1459
1460 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1461 {
1462         return ether_addr_equal(raddr, addr) ||
1463                is_broadcast_ether_addr(raddr);
1464 }
1465
1466 static inline bool
1467 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1468 {
1469         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1470                      status->flag & RX_FLAG_MACTIME_END);
1471         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1472 }
1473
1474 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1475                                      struct ieee80211_rx_status *status,
1476                                      unsigned int mpdu_len,
1477                                      unsigned int mpdu_offset);
1478 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1479 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1480 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1481                                       u32 changed);
1482 void ieee80211_configure_filter(struct ieee80211_local *local);
1483 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1484
1485 /* STA code */
1486 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1487 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1488                        struct cfg80211_auth_request *req);
1489 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1490                         struct cfg80211_assoc_request *req);
1491 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1492                          struct cfg80211_deauth_request *req);
1493 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1494                            struct cfg80211_disassoc_request *req);
1495 void ieee80211_send_pspoll(struct ieee80211_local *local,
1496                            struct ieee80211_sub_if_data *sdata);
1497 void ieee80211_recalc_ps(struct ieee80211_local *local);
1498 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1499 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1500 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1501 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1502                                   struct sk_buff *skb);
1503 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1504 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1505 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1506 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1507                                   __le16 fc, bool acked);
1508 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1509 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1511
1512 /* IBSS code */
1513 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1514 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1515 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1516                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1517 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1518                         struct cfg80211_ibss_params *params);
1519 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1520 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1521 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1522                                    struct sk_buff *skb);
1523 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1524                               struct cfg80211_csa_settings *csa_settings);
1525 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1526 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1527
1528 /* OCB code */
1529 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1530 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1531                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1532 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1533 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1534                        struct ocb_setup *setup);
1535 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1536
1537 /* mesh code */
1538 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1539 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1540                                    struct sk_buff *skb);
1541 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1542                               struct cfg80211_csa_settings *csa_settings);
1543 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1544
1545 /* scan/BSS handling */
1546 void ieee80211_scan_work(struct work_struct *work);
1547 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1548                                 const u8 *ssid, u8 ssid_len,
1549                                 struct ieee80211_channel **channels,
1550                                 unsigned int n_channels,
1551                                 enum nl80211_bss_scan_width scan_width);
1552 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1553                            struct cfg80211_scan_request *req);
1554 void ieee80211_scan_cancel(struct ieee80211_local *local);
1555 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1556 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1557
1558 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1559 struct ieee80211_bss *
1560 ieee80211_bss_info_update(struct ieee80211_local *local,
1561                           struct ieee80211_rx_status *rx_status,
1562                           struct ieee80211_mgmt *mgmt,
1563                           size_t len,
1564                           struct ieee802_11_elems *elems,
1565                           struct ieee80211_channel *channel);
1566 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1567                           struct ieee80211_bss *bss);
1568
1569 /* scheduled scan handling */
1570 int
1571 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1572                                      struct cfg80211_sched_scan_request *req);
1573 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1574                                        struct cfg80211_sched_scan_request *req);
1575 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1576 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1577 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1578
1579 /* off-channel helpers */
1580 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1581 void ieee80211_offchannel_return(struct ieee80211_local *local);
1582 void ieee80211_roc_setup(struct ieee80211_local *local);
1583 void ieee80211_start_next_roc(struct ieee80211_local *local);
1584 void ieee80211_roc_purge(struct ieee80211_local *local,
1585                          struct ieee80211_sub_if_data *sdata);
1586 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1587 void ieee80211_sw_roc_work(struct work_struct *work);
1588 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1589
1590 /* channel switch handling */
1591 void ieee80211_csa_finalize_work(struct work_struct *work);
1592 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1593                              struct cfg80211_csa_settings *params);
1594
1595 /* interface handling */
1596 int ieee80211_iface_init(void);
1597 void ieee80211_iface_exit(void);
1598 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1599                      unsigned char name_assign_type,
1600                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1601                      struct vif_params *params);
1602 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1603                              enum nl80211_iftype type);
1604 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1605 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1606 u32 ieee80211_idle_off(struct ieee80211_local *local);
1607 void ieee80211_recalc_idle(struct ieee80211_local *local);
1608 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1609                                     const int offset);
1610 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1611 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1612 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1613 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1614
1615 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1616 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1617                               bool update_bss);
1618
1619 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1620 {
1621         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1622 }
1623
1624 /* tx handling */
1625 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1626 void ieee80211_tx_pending(unsigned long data);
1627 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1628                                          struct net_device *dev);
1629 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1630                                        struct net_device *dev);
1631 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1632                                   struct net_device *dev,
1633                                   u32 info_flags);
1634 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1635                               struct sk_buff_head *skbs);
1636 struct sk_buff *
1637 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1638                               struct sk_buff *skb, u32 info_flags);
1639 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1640                           struct ieee80211_supported_band *sband,
1641                           int retry_count, int shift, bool send_to_cooked);
1642
1643 void ieee80211_check_fast_xmit(struct sta_info *sta);
1644 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1645 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1646 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1647
1648 /* HT */
1649 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1650                                      struct ieee80211_sta_ht_cap *ht_cap);
1651 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1652                                        struct ieee80211_supported_band *sband,
1653                                        const struct ieee80211_ht_cap *ht_cap_ie,
1654                                        struct sta_info *sta);
1655 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1656                           const u8 *da, u16 tid,
1657                           u16 initiator, u16 reason_code);
1658 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1659                                enum ieee80211_smps_mode smps, const u8 *da,
1660                                const u8 *bssid);
1661 void ieee80211_request_smps_ap_work(struct work_struct *work);
1662 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1663 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1664                                    enum ieee80211_smps_mode smps_mode_new);
1665
1666 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1667                                      u16 initiator, u16 reason, bool stop);
1668 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1669                                     u16 initiator, u16 reason, bool stop);
1670 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1671                                      u8 dialog_token, u16 timeout,
1672                                      u16 start_seq_num, u16 ba_policy, u16 tid,
1673                                      u16 buf_size, bool tx, bool auto_seq);
1674 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1675                                          enum ieee80211_agg_stop_reason reason);
1676 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1677                              struct sta_info *sta,
1678                              struct ieee80211_mgmt *mgmt, size_t len);
1679 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1680                                   struct sta_info *sta,
1681                                   struct ieee80211_mgmt *mgmt,
1682                                   size_t len);
1683 void ieee80211_process_addba_request(struct ieee80211_local *local,
1684                                      struct sta_info *sta,
1685                                      struct ieee80211_mgmt *mgmt,
1686                                      size_t len);
1687
1688 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1689                                    enum ieee80211_agg_stop_reason reason);
1690 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1691                                     enum ieee80211_agg_stop_reason reason);
1692 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1693 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1694 void ieee80211_ba_session_work(struct work_struct *work);
1695 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1696 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1697
1698 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1699
1700 /* VHT */
1701 void
1702 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1703                                     struct ieee80211_supported_band *sband,
1704                                     const struct ieee80211_vht_cap *vht_cap_ie,
1705                                     struct sta_info *sta);
1706 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1707 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1708 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1709 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1710                                   struct sta_info *sta, u8 opmode,
1711                                   enum ieee80211_band band);
1712 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1713                                  struct sta_info *sta, u8 opmode,
1714                                  enum ieee80211_band band);
1715 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1716                                       struct ieee80211_sta_vht_cap *vht_cap);
1717 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1718                                      u16 vht_mask[NL80211_VHT_NSS_MAX]);
1719
1720 /* Spectrum management */
1721 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1722                                        struct ieee80211_mgmt *mgmt,
1723                                        size_t len);
1724 /**
1725  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1726  * @sdata: the sdata of the interface which has received the frame
1727  * @elems: parsed 802.11 elements received with the frame
1728  * @current_band: indicates the current band
1729  * @sta_flags: contains information about own capabilities and restrictions
1730  *      to decide which channel switch announcements can be accepted. Only the
1731  *      following subset of &enum ieee80211_sta_flags are evaluated:
1732  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1733  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1734  *      %IEEE80211_STA_DISABLE_160MHZ.
1735  * @bssid: the currently connected bssid (for reporting)
1736  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1737         All of them will be filled with if success only.
1738  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1739  */
1740 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1741                                  struct ieee802_11_elems *elems,
1742                                  enum ieee80211_band current_band,
1743                                  u32 sta_flags, u8 *bssid,
1744                                  struct ieee80211_csa_ie *csa_ie);
1745
1746 /* Suspend/resume and hw reconfiguration */
1747 int ieee80211_reconfig(struct ieee80211_local *local);
1748 void ieee80211_stop_device(struct ieee80211_local *local);
1749
1750 int __ieee80211_suspend(struct ieee80211_hw *hw,
1751                         struct cfg80211_wowlan *wowlan);
1752
1753 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1754 {
1755         struct ieee80211_local *local = hw_to_local(hw);
1756
1757         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1758              !test_bit(SCAN_COMPLETED, &local->scanning),
1759                 "%s: resume with hardware scan still in progress\n",
1760                 wiphy_name(hw->wiphy));
1761
1762         return ieee80211_reconfig(hw_to_local(hw));
1763 }
1764
1765 /* utility functions/constants */
1766 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1767 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1768                              int rate, int erp, int short_preamble,
1769                              int shift);
1770 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1771                                bool bss_notify, bool enable_qos);
1772 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1773                     struct sta_info *sta, struct sk_buff *skb);
1774
1775 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1776                                  struct sk_buff *skb, int tid,
1777                                  enum ieee80211_band band);
1778
1779 static inline void
1780 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1781                           struct sk_buff *skb, int tid,
1782                           enum ieee80211_band band)
1783 {
1784         rcu_read_lock();
1785         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1786         rcu_read_unlock();
1787 }
1788
1789 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1790                                         struct sk_buff *skb, int tid)
1791 {
1792         struct ieee80211_chanctx_conf *chanctx_conf;
1793
1794         rcu_read_lock();
1795         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1796         if (WARN_ON(!chanctx_conf)) {
1797                 rcu_read_unlock();
1798                 kfree_skb(skb);
1799                 return;
1800         }
1801
1802         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1803                                     chanctx_conf->def.chan->band);
1804         rcu_read_unlock();
1805 }
1806
1807 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1808                                     struct sk_buff *skb)
1809 {
1810         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1811         ieee80211_tx_skb_tid(sdata, skb, 7);
1812 }
1813
1814 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1815                                struct ieee802_11_elems *elems,
1816                                u64 filter, u32 crc);
1817 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1818                                           bool action,
1819                                           struct ieee802_11_elems *elems)
1820 {
1821         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1822 }
1823
1824 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1825 {
1826         struct sk_buff *tail = skb_peek_tail(frames);
1827         struct ieee80211_rx_status *status;
1828
1829         if (!tail)
1830                 return false;
1831
1832         status = IEEE80211_SKB_RXCB(tail);
1833         if (status->flag & RX_FLAG_AMSDU_MORE)
1834                 return false;
1835
1836         return true;
1837 }
1838
1839 extern const int ieee802_1d_to_ac[8];
1840
1841 static inline int ieee80211_ac_from_tid(int tid)
1842 {
1843         return ieee802_1d_to_ac[tid & 7];
1844 }
1845
1846 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1847 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1848 void ieee80211_dynamic_ps_timer(unsigned long data);
1849 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1850                              struct ieee80211_sub_if_data *sdata,
1851                              bool powersave);
1852 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1853                              struct ieee80211_hdr *hdr);
1854 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1855                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1856
1857 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1858                                      unsigned long queues,
1859                                      enum queue_stop_reason reason,
1860                                      bool refcounted);
1861 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1862                                struct ieee80211_sub_if_data *sdata,
1863                                enum queue_stop_reason reason);
1864 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1865                                struct ieee80211_sub_if_data *sdata,
1866                                enum queue_stop_reason reason);
1867 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1868                                      unsigned long queues,
1869                                      enum queue_stop_reason reason,
1870                                      bool refcounted);
1871 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1872                                     enum queue_stop_reason reason,
1873                                     bool refcounted);
1874 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1875                                     enum queue_stop_reason reason,
1876                                     bool refcounted);
1877 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1878 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1879                                struct sk_buff *skb);
1880 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1881                                 struct sk_buff_head *skbs);
1882 void ieee80211_flush_queues(struct ieee80211_local *local,
1883                             struct ieee80211_sub_if_data *sdata, bool drop);
1884 void __ieee80211_flush_queues(struct ieee80211_local *local,
1885                               struct ieee80211_sub_if_data *sdata,
1886                               unsigned int queues, bool drop);
1887
1888 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1889 {
1890         /*
1891          * If quiescing is set, we are racing with __ieee80211_suspend.
1892          * __ieee80211_suspend flushes the workers after setting quiescing,
1893          * and we check quiescing / suspended before enqueing new workers.
1894          * We should abort the worker to avoid the races below.
1895          */
1896         if (local->quiescing)
1897                 return false;
1898
1899         /*
1900          * We might already be suspended if the following scenario occurs:
1901          * __ieee80211_suspend          Control path
1902          *
1903          *                              if (local->quiescing)
1904          *                                      return;
1905          * local->quiescing = true;
1906          * flush_workqueue();
1907          *                              queue_work(...);
1908          * local->suspended = true;
1909          * local->quiescing = false;
1910          *                              worker starts running...
1911          */
1912         if (local->suspended)
1913                 return false;
1914
1915         return true;
1916 }
1917
1918 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
1919                              struct sta_info *sta,
1920                              struct txq_info *txq, int tid);
1921 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1922                          u16 transaction, u16 auth_alg, u16 status,
1923                          const u8 *extra, size_t extra_len, const u8 *bssid,
1924                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1925                          u32 tx_flags);
1926 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1927                                     const u8 *bssid, u16 stype, u16 reason,
1928                                     bool send_frame, u8 *frame_buf);
1929 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1930                              size_t buffer_len,
1931                              struct ieee80211_scan_ies *ie_desc,
1932                              const u8 *ie, size_t ie_len,
1933                              u8 bands_used, u32 *rate_masks,
1934                              struct cfg80211_chan_def *chandef);
1935 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1936                                           const u8 *src, const u8 *dst,
1937                                           u32 ratemask,
1938                                           struct ieee80211_channel *chan,
1939                                           const u8 *ssid, size_t ssid_len,
1940                                           const u8 *ie, size_t ie_len,
1941                                           bool directed);
1942 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1943                               const u8 *src, const u8 *dst,
1944                               const u8 *ssid, size_t ssid_len,
1945                               const u8 *ie, size_t ie_len,
1946                               u32 ratemask, bool directed, u32 tx_flags,
1947                               struct ieee80211_channel *channel, bool scan);
1948
1949 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1950                             struct ieee802_11_elems *elems,
1951                             enum ieee80211_band band, u32 *basic_rates);
1952 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1953                                  enum ieee80211_smps_mode smps_mode);
1954 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1955                                 enum ieee80211_smps_mode smps_mode);
1956 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1957 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1958
1959 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1960 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1961                               u16 cap);
1962 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1963                                const struct cfg80211_chan_def *chandef,
1964                                u16 prot_mode, bool rifs_mode);
1965 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1966                                u32 cap);
1967 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1968                                 const struct cfg80211_chan_def *chandef);
1969 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1970                              const struct ieee80211_supported_band *sband,
1971                              const u8 *srates, int srates_len, u32 *rates);
1972 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1973                             struct sk_buff *skb, bool need_basic,
1974                             enum ieee80211_band band);
1975 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1976                                 struct sk_buff *skb, bool need_basic,
1977                                 enum ieee80211_band band);
1978 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1979
1980 /* channel management */
1981 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1982                                   const struct ieee80211_ht_operation *ht_oper,
1983                                   struct cfg80211_chan_def *chandef);
1984 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan,
1985                                    const struct ieee80211_vht_operation *oper,
1986                                    struct cfg80211_chan_def *chandef);
1987 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1988
1989 int __must_check
1990 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1991                           const struct cfg80211_chan_def *chandef,
1992                           enum ieee80211_chanctx_mode mode);
1993 int __must_check
1994 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1995                               const struct cfg80211_chan_def *chandef,
1996                               enum ieee80211_chanctx_mode mode,
1997                               bool radar_required);
1998 int __must_check
1999 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2000 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2001
2002 int __must_check
2003 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2004                                const struct cfg80211_chan_def *chandef,
2005                                u32 *changed);
2006 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2007 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2008 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2009                                          bool clear);
2010 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2011                                struct ieee80211_chanctx *ctx);
2012
2013 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2014                                    struct ieee80211_chanctx *chanctx);
2015 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2016                                       struct ieee80211_chanctx *ctx);
2017 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2018
2019 void ieee80211_dfs_cac_timer(unsigned long data);
2020 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2021 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2022 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2023 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2024                               struct cfg80211_csa_settings *csa_settings);
2025
2026 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2027 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2028 const struct ieee80211_cipher_scheme *
2029 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2030                  enum nl80211_iftype iftype);
2031 int ieee80211_cs_headroom(struct ieee80211_local *local,
2032                           struct cfg80211_crypto_settings *crypto,
2033                           enum nl80211_iftype iftype);
2034 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2035                            struct ieee80211_sub_if_data *sdata);
2036 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2037                                  const struct cfg80211_chan_def *chandef,
2038                                  enum ieee80211_chanctx_mode chanmode,
2039                                  u8 radar_detect);
2040 int ieee80211_max_num_channels(struct ieee80211_local *local);
2041 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2042 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2043                                        struct ieee80211_chanctx *ctx);
2044
2045 /* TDLS */
2046 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2047                         const u8 *peer, u8 action_code, u8 dialog_token,
2048                         u16 status_code, u32 peer_capability,
2049                         bool initiator, const u8 *extra_ies,
2050                         size_t extra_ies_len);
2051 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2052                         const u8 *peer, enum nl80211_tdls_operation oper);
2053 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2054 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2055                                   const u8 *addr, u8 oper_class,
2056                                   struct cfg80211_chan_def *chandef);
2057 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2058                                           struct net_device *dev,
2059                                           const u8 *addr);
2060 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2061 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2062
2063 extern const struct ethtool_ops ieee80211_ethtool_ops;
2064
2065 #ifdef CONFIG_MAC80211_NOINLINE
2066 #define debug_noinline noinline
2067 #else
2068 #define debug_noinline
2069 #endif
2070
2071 #endif /* IEEE80211_I_H */