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 ccmp; /* Whether fragments were encrypted with CCMP */
  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         bool adjusting_tbtt;
 686         /* mesh power save */
 687         enum nl80211_mesh_power_mode nonpeer_pm;
 688         int ps_peers_light_sleep;
 689         int ps_peers_deep_sleep;
 690         struct ps_data ps;
 691         /* Channel Switching Support */
 692         struct mesh_csa_settings __rcu *csa;
 693         enum {
 694                 IEEE80211_MESH_CSA_ROLE_NONE,
 695                 IEEE80211_MESH_CSA_ROLE_INIT,
 696                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 697         } csa_role;
 698         u8 chsw_ttl;
 699         u16 pre_value;
 700
 701         /* offset from skb->data while building IE */
 702         int meshconf_offset;
 703 };
 704
 705 #ifdef CONFIG_MAC80211_MESH
 706 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 707         do { (msh)->mshstats.name++; } while (0)
 708 #else
 709 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 710         do { } while (0)
 711 #endif
 712
 713 /**
 714  * enum ieee80211_sub_if_data_flags - virtual interface flags
 715  *
 716  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 717  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 718  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 719  *      associated stations and deliver multicast frames both
 720  *      back to wireless media and to the local net stack.
 721  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 722  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 723  * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability
 724  */
 725 enum ieee80211_sub_if_data_flags {
 726         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 727         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 728         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 729         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 730         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 731         IEEE80211_SDATA_MU_MIMO_OWNER           = BIT(6),
 732 };
 733
 734 /**
 735  * enum ieee80211_sdata_state_bits - virtual interface state bits
 736  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 737  *      mirrors netif_running() but is separate for interface type
 738  *      change handling while the interface is up
 739  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 740  *      mode, so queues are stopped
 741  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 742  *      to offchannel, reset when offchannel returns
 743  */
 744 enum ieee80211_sdata_state_bits {
 745         SDATA_STATE_RUNNING,
 746         SDATA_STATE_OFFCHANNEL,
 747         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 748 };
 749
 750 /**
 751  * enum ieee80211_chanctx_mode - channel context configuration mode
 752  *
 753  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 754  *      multiple interfaces
 755  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 756  *      only by a single interface. This can be used for example for
 757  *      non-fixed channel IBSS.
 758  */
 759 enum ieee80211_chanctx_mode {
 760         IEEE80211_CHANCTX_SHARED,
 761         IEEE80211_CHANCTX_EXCLUSIVE
 762 };
 763
 764 /**
 765  * enum ieee80211_chanctx_replace_state - channel context replacement state
 766  *
 767  * This is used for channel context in-place reservations that require channel
 768  * context switch/swap.
 769  *
 770  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 771  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 772  *      by a (not yet registered) channel context pointed by %replace_ctx.
 773  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 774  *      replaces an existing channel context pointed to by %replace_ctx.
 775  */
 776 enum ieee80211_chanctx_replace_state {
 777         IEEE80211_CHANCTX_REPLACE_NONE,
 778         IEEE80211_CHANCTX_WILL_BE_REPLACED,
 779         IEEE80211_CHANCTX_REPLACES_OTHER,
 780 };
 781
 782 struct ieee80211_chanctx {
 783         struct list_head list;
 784         struct rcu_head rcu_head;
 785
 786         struct list_head assigned_vifs;
 787         struct list_head reserved_vifs;
 788
 789         enum ieee80211_chanctx_replace_state replace_state;
 790         struct ieee80211_chanctx *replace_ctx;
 791
 792         enum ieee80211_chanctx_mode mode;
 793         bool driver_present;
 794
 795         struct ieee80211_chanctx_conf conf;
 796 };
 797
 798 struct mac80211_qos_map {
 799         struct cfg80211_qos_map qos_map;
 800         struct rcu_head rcu_head;
 801 };
 802
 803 enum txq_info_flags {
 804         IEEE80211_TXQ_STOP,
 805         IEEE80211_TXQ_AMPDU,
 806 };
 807
 808 struct txq_info {
 809         struct sk_buff_head queue;
 810         unsigned long flags;
 811
 812         /* keep last! */
 813         struct ieee80211_txq txq;
 814 };
 815
 816 struct ieee80211_sub_if_data {
 817         struct list_head list;
 818
 819         struct wireless_dev wdev;
 820
 821         /* keys */
 822         struct list_head key_list;
 823
 824         /* count for keys needing tailroom space allocation */
 825         int crypto_tx_tailroom_needed_cnt;
 826         int crypto_tx_tailroom_pending_dec;
 827         struct delayed_work dec_tailroom_needed_wk;
 828
 829         struct net_device *dev;
 830         struct ieee80211_local *local;
 831
 832         unsigned int flags;
 833
 834         unsigned long state;
 835
 836         char name[IFNAMSIZ];
 837
 838         /* Fragment table for host-based reassembly */
 839         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 840         unsigned int fragment_next;
 841
 842         /* TID bitmap for NoAck policy */
 843         u16 noack_map;
 844
 845         /* bit field of ACM bits (BIT(802.1D tag)) */
 846         u8 wmm_acm;
 847
 848         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 849         struct ieee80211_key __rcu *default_unicast_key;
 850         struct ieee80211_key __rcu *default_multicast_key;
 851         struct ieee80211_key __rcu *default_mgmt_key;
 852
 853         u16 sequence_number;
 854         __be16 control_port_protocol;
 855         bool control_port_no_encrypt;
 856         int encrypt_headroom;
 857
 858         atomic_t txqs_len[IEEE80211_NUM_ACS];
 859         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 860         struct mac80211_qos_map __rcu *qos_map;
 861
 862         struct work_struct csa_finalize_work;
 863         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 864         struct cfg80211_chan_def csa_chandef;
 865
 866         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 867         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 868
 869         /* context reservation -- protected with chanctx_mtx */
 870         struct ieee80211_chanctx *reserved_chanctx;
 871         struct cfg80211_chan_def reserved_chandef;
 872         bool reserved_radar_required;
 873         bool reserved_ready;
 874
 875         /* used to reconfigure hardware SM PS */
 876         struct work_struct recalc_smps;
 877
 878         struct work_struct work;
 879         struct sk_buff_head skb_queue;
 880
 881         u8 needed_rx_chains;
 882         enum ieee80211_smps_mode smps_mode;
 883
 884         int user_power_level; /* in dBm */
 885         int ap_power_level; /* in dBm */
 886
 887         bool radar_required;
 888         struct delayed_work dfs_cac_timer_work;
 889
 890         /*
 891          * AP this belongs to: self in AP mode and
 892          * corresponding AP in VLAN mode, NULL for
 893          * all others (might be needed later in IBSS)
 894          */
 895         struct ieee80211_if_ap *bss;
 896
 897         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 898         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 899
 900         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 901         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 902
 903         bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS];
 904         u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX];
 905
 906         union {
 907                 struct ieee80211_if_ap ap;
 908                 struct ieee80211_if_wds wds;
 909                 struct ieee80211_if_vlan vlan;
 910                 struct ieee80211_if_managed mgd;
 911                 struct ieee80211_if_ibss ibss;
 912                 struct ieee80211_if_mesh mesh;
 913                 struct ieee80211_if_ocb ocb;
 914                 u32 mntr_flags;
 915         } u;
 916
 917 #ifdef CONFIG_MAC80211_DEBUGFS
 918         struct {
 919                 struct dentry *subdir_stations;
 920                 struct dentry *default_unicast_key;
 921                 struct dentry *default_multicast_key;
 922                 struct dentry *default_mgmt_key;
 923         } debugfs;
 924 #endif
 925
 926         /* must be last, dynamically sized area in this! */
 927         struct ieee80211_vif vif;
 928 };
 929
 930 static inline
 931 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 932 {
 933         return container_of(p, struct ieee80211_sub_if_data, vif);
 934 }
 935
 936 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 937         __acquires(&sdata->wdev.mtx)
 938 {
 939         mutex_lock(&sdata->wdev.mtx);
 940         __acquire(&sdata->wdev.mtx);
 941 }
 942
 943 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 944         __releases(&sdata->wdev.mtx)
 945 {
 946         mutex_unlock(&sdata->wdev.mtx);
 947         __release(&sdata->wdev.mtx);
 948 }
 949
 950 #define sdata_dereference(p, sdata) \
 951         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 952
 953 static inline void
 954 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 955 {
 956         lockdep_assert_held(&sdata->wdev.mtx);
 957 }
 958
 959 static inline enum ieee80211_band
 960 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 961 {
 962         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 963         struct ieee80211_chanctx_conf *chanctx_conf;
 964
 965         rcu_read_lock();
 966         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 967         if (!WARN_ON(!chanctx_conf))
 968                 band = chanctx_conf->def.chan->band;
 969         rcu_read_unlock();
 970
 971         return band;
 972 }
 973
 974 static inline int
 975 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 976 {
 977         switch (chandef->width) {
 978         case NL80211_CHAN_WIDTH_5:
 979                 return 2;
 980         case NL80211_CHAN_WIDTH_10:
 981                 return 1;
 982         default:
 983                 return 0;
 984         }
 985 }
 986
 987 static inline int
 988 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 989 {
 990         struct ieee80211_chanctx_conf *chanctx_conf;
 991         int shift = 0;
 992
 993         rcu_read_lock();
 994         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 995         if (chanctx_conf)
 996                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 997         rcu_read_unlock();
 998
 999         return shift;
1000 }
1001
1002 struct ieee80211_rx_agg {
1003         u8 addr[ETH_ALEN];
1004         u16 tid;
1005 };
1006
1007 enum sdata_queue_type {
1008         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
1009         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
1010         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
1011         IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
1012         IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
1013 };
1014
1015 enum {
1016         IEEE80211_RX_MSG        = 1,
1017         IEEE80211_TX_STATUS_MSG = 2,
1018 };
1019
1020 enum queue_stop_reason {
1021         IEEE80211_QUEUE_STOP_REASON_DRIVER,
1022         IEEE80211_QUEUE_STOP_REASON_PS,
1023         IEEE80211_QUEUE_STOP_REASON_CSA,
1024         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1025         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1026         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1027         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1028         IEEE80211_QUEUE_STOP_REASON_FLUSH,
1029         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1030         IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1031
1032         IEEE80211_QUEUE_STOP_REASONS,
1033 };
1034
1035 #ifdef CONFIG_MAC80211_LEDS
1036 struct tpt_led_trigger {
1037         char name[32];
1038         const struct ieee80211_tpt_blink *blink_table;
1039         unsigned int blink_table_len;
1040         struct timer_list timer;
1041         unsigned long prev_traffic;
1042         unsigned long tx_bytes, rx_bytes;
1043         unsigned int active, want;
1044         bool running;
1045 };
1046 #endif
1047
1048 /**
1049  * mac80211 scan flags - currently active scan mode
1050  *
1051  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1052  *      well be on the operating channel
1053  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1054  *      determine if we are on the operating channel or not
1055  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1056  *      channel. This should not interrupt normal traffic.
1057  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1058  *      that the scan completed.
1059  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1060  *      a scan complete for an aborted scan.
1061  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1062  *      cancelled.
1063  */
1064 enum {
1065         SCAN_SW_SCANNING,
1066         SCAN_HW_SCANNING,
1067         SCAN_ONCHANNEL_SCANNING,
1068         SCAN_COMPLETED,
1069         SCAN_ABORTED,
1070         SCAN_HW_CANCELLED,
1071 };
1072
1073 /**
1074  * enum mac80211_scan_state - scan state machine states
1075  *
1076  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1077  *      determines if we should keep on scanning or switch back to the
1078  *      operating channel
1079  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1080  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1081  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1082  *      send out data
1083  * @SCAN_RESUME: Resume the scan and scan the next channel
1084  * @SCAN_ABORT: Abort the scan and go back to operating channel
1085  */
1086 enum mac80211_scan_state {
1087         SCAN_DECISION,
1088         SCAN_SET_CHANNEL,
1089         SCAN_SEND_PROBE,
1090         SCAN_SUSPEND,
1091         SCAN_RESUME,
1092         SCAN_ABORT,
1093 };
1094
1095 struct ieee80211_local {
1096         /* embed the driver visible part.
1097          * don't cast (use the static inlines below), but we keep
1098          * it first anyway so they become a no-op */
1099         struct ieee80211_hw hw;
1100
1101         const struct ieee80211_ops *ops;
1102
1103         /*
1104          * private workqueue to mac80211. mac80211 makes this accessible
1105          * via ieee80211_queue_work()
1106          */
1107         struct workqueue_struct *workqueue;
1108
1109         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1110         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1111         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1112         spinlock_t queue_stop_reason_lock;
1113
1114         int open_count;
1115         int monitors, cooked_mntrs;
1116         /* number of interfaces with corresponding FIF_ flags */
1117         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1118             fif_probe_req;
1119         int probe_req_reg;
1120         unsigned int filter_flags; /* FIF_* */
1121
1122         bool wiphy_ciphers_allocated;
1123
1124         bool use_chanctx;
1125
1126         /* protects the aggregated multicast list and filter calls */
1127         spinlock_t filter_lock;
1128
1129         /* used for uploading changed mc list */
1130         struct work_struct reconfig_filter;
1131
1132         /* aggregated multicast list */
1133         struct netdev_hw_addr_list mc_list;
1134
1135         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1136
1137         /*
1138          * suspended is true if we finished all the suspend _and_ we have
1139          * not yet come up from resume. This is to be used by mac80211
1140          * to ensure driver sanity during suspend and mac80211's own
1141          * sanity. It can eventually be used for WoW as well.
1142          */
1143         bool suspended;
1144
1145         /*
1146          * Resuming is true while suspended, but when we're reprogramming the
1147          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1148          * again even though some other parts of the stack are still suspended
1149          * and we still drop received frames to avoid waking the stack.
1150          */
1151         bool resuming;
1152
1153         /*
1154          * quiescing is true during the suspend process _only_ to
1155          * ease timer cancelling etc.
1156          */
1157         bool quiescing;
1158
1159         /* device is started */
1160         bool started;
1161
1162         /* device is during a HW reconfig */
1163         bool in_reconfig;
1164
1165         /* wowlan is enabled -- don't reconfig on resume */
1166         bool wowlan;
1167
1168         struct work_struct radar_detected_work;
1169
1170         /* number of RX chains the hardware has */
1171         u8 rx_chains;
1172
1173         int tx_headroom; /* required headroom for hardware/radiotap */
1174
1175         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1176          * added to skb_queue will be processed, but frames in
1177          * skb_queue_unreliable may be dropped if the total length of these
1178          * queues increases over the limit. */
1179 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1180         struct tasklet_struct tasklet;
1181         struct sk_buff_head skb_queue;
1182         struct sk_buff_head skb_queue_unreliable;
1183
1184         spinlock_t rx_path_lock;
1185
1186         /* Station data */
1187         /*
1188          * The mutex only protects the list, hash table and
1189          * counter, reads are done with RCU.
1190          */
1191         struct mutex sta_mtx;
1192         spinlock_t tim_lock;
1193         unsigned long num_sta;
1194         struct list_head sta_list;
1195         struct rhashtable sta_hash;
1196         struct timer_list sta_cleanup;
1197         int sta_generation;
1198
1199         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1200         struct tasklet_struct tx_pending_tasklet;
1201
1202         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1203
1204         /* number of interfaces with allmulti RX */
1205         atomic_t iff_allmultis;
1206
1207         struct rate_control_ref *rate_ctrl;
1208
1209         struct crypto_cipher *wep_tx_tfm;
1210         struct crypto_cipher *wep_rx_tfm;
1211         u32 wep_iv;
1212
1213         /* see iface.c */
1214         struct list_head interfaces;
1215         struct mutex iflist_mtx;
1216
1217         /*
1218          * Key mutex, protects sdata's key_list and sta_info's
1219          * key pointers (write access, they're RCU.)
1220          */
1221         struct mutex key_mtx;
1222
1223         /* mutex for scan and work locking */
1224         struct mutex mtx;
1225
1226         /* Scanning and BSS list */
1227         unsigned long scanning;
1228         struct cfg80211_ssid scan_ssid;
1229         struct cfg80211_scan_request *int_scan_req;
1230         struct cfg80211_scan_request __rcu *scan_req;
1231         struct ieee80211_scan_request *hw_scan_req;
1232         struct cfg80211_chan_def scan_chandef;
1233         enum ieee80211_band hw_scan_band;
1234         int scan_channel_idx;
1235         int scan_ies_len;
1236         int hw_scan_ies_bufsize;
1237
1238         struct work_struct sched_scan_stopped_work;
1239         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1240         struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1241         u8 scan_addr[ETH_ALEN];
1242
1243         unsigned long leave_oper_channel_time;
1244         enum mac80211_scan_state next_scan_state;
1245         struct delayed_work scan_work;
1246         struct ieee80211_sub_if_data __rcu *scan_sdata;
1247         /* For backward compatibility only -- do not use */
1248         struct cfg80211_chan_def _oper_chandef;
1249
1250         /* Temporary remain-on-channel for off-channel operations */
1251         struct ieee80211_channel *tmp_channel;
1252
1253         /* channel contexts */
1254         struct list_head chanctx_list;
1255         struct mutex chanctx_mtx;
1256
1257 #ifdef CONFIG_MAC80211_LEDS
1258         struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1259         struct led_trigger tpt_led;
1260         atomic_t tx_led_active, rx_led_active, assoc_led_active;
1261         atomic_t radio_led_active, tpt_led_active;
1262         struct tpt_led_trigger *tpt_led_trigger;
1263 #endif
1264
1265 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1266         /* SNMP counters */
1267         /* dot11CountersTable */
1268         u32 dot11TransmittedFragmentCount;
1269         u32 dot11MulticastTransmittedFrameCount;
1270         u32 dot11FailedCount;
1271         u32 dot11RetryCount;
1272         u32 dot11MultipleRetryCount;
1273         u32 dot11FrameDuplicateCount;
1274         u32 dot11ReceivedFragmentCount;
1275         u32 dot11MulticastReceivedFrameCount;
1276         u32 dot11TransmittedFrameCount;
1277
1278         /* TX/RX handler statistics */
1279         unsigned int tx_handlers_drop;
1280         unsigned int tx_handlers_queued;
1281         unsigned int tx_handlers_drop_wep;
1282         unsigned int tx_handlers_drop_not_assoc;
1283         unsigned int tx_handlers_drop_unauth_port;
1284         unsigned int rx_handlers_drop;
1285         unsigned int rx_handlers_queued;
1286         unsigned int rx_handlers_drop_nullfunc;
1287         unsigned int rx_handlers_drop_defrag;
1288         unsigned int tx_expand_skb_head;
1289         unsigned int tx_expand_skb_head_cloned;
1290         unsigned int rx_expand_skb_head_defrag;
1291         unsigned int rx_handlers_fragments;
1292         unsigned int tx_status_drop;
1293 #define I802_DEBUG_INC(c) (c)++
1294 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1295 #define I802_DEBUG_INC(c) do { } while (0)
1296 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1297
1298
1299         int total_ps_buffered; /* total number of all buffered unicast and
1300                                 * multicast packets for power saving stations
1301                                 */
1302
1303         bool pspolling;
1304         bool offchannel_ps_enabled;
1305         /*
1306          * PS can only be enabled when we have exactly one managed
1307          * interface (and monitors) in PS, this then points there.
1308          */
1309         struct ieee80211_sub_if_data *ps_sdata;
1310         struct work_struct dynamic_ps_enable_work;
1311         struct work_struct dynamic_ps_disable_work;
1312         struct timer_list dynamic_ps_timer;
1313         struct notifier_block ifa_notifier;
1314         struct notifier_block ifa6_notifier;
1315
1316         /*
1317          * The dynamic ps timeout configured from user space via WEXT -
1318          * this will override whatever chosen by mac80211 internally.
1319          */
1320         int dynamic_ps_forced_timeout;
1321
1322         int user_power_level; /* in dBm, for all interfaces */
1323
1324         enum ieee80211_smps_mode smps_mode;
1325
1326         struct work_struct restart_work;
1327
1328 #ifdef CONFIG_MAC80211_DEBUGFS
1329         struct local_debugfsdentries {
1330                 struct dentry *rcdir;
1331                 struct dentry *keys;
1332         } debugfs;
1333 #endif
1334
1335         /*
1336          * Remain-on-channel support
1337          */
1338         struct list_head roc_list;
1339         struct work_struct hw_roc_start, hw_roc_done;
1340         unsigned long hw_roc_start_time;
1341         u64 roc_cookie_counter;
1342
1343         struct idr ack_status_frames;
1344         spinlock_t ack_status_lock;
1345
1346         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1347
1348         /* virtual monitor interface */
1349         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1350         struct cfg80211_chan_def monitor_chandef;
1351
1352         /* extended capabilities provided by mac80211 */
1353         u8 ext_capa[8];
1354
1355         /* TDLS channel switch */
1356         struct work_struct tdls_chsw_work;
1357         struct sk_buff_head skb_queue_tdls_chsw;
1358 };
1359
1360 static inline struct ieee80211_sub_if_data *
1361 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1362 {
1363         return netdev_priv(dev);
1364 }
1365
1366 static inline struct ieee80211_sub_if_data *
1367 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1368 {
1369         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1370 }
1371
1372 /* this struct represents 802.11n's RA/TID combination */
1373 struct ieee80211_ra_tid {
1374         u8 ra[ETH_ALEN];
1375         u16 tid;
1376 };
1377
1378 /* this struct holds the value parsing from channel switch IE  */
1379 struct ieee80211_csa_ie {
1380         struct cfg80211_chan_def chandef;
1381         u8 mode;
1382         u8 count;
1383         u8 ttl;
1384         u16 pre_value;
1385 };
1386
1387 /* Parsed Information Elements */
1388 struct ieee802_11_elems {
1389         const u8 *ie_start;
1390         size_t total_len;
1391
1392         /* pointers to IEs */
1393         const struct ieee80211_tdls_lnkie *lnk_id;
1394         const struct ieee80211_ch_switch_timing *ch_sw_timing;
1395         const u8 *ext_capab;
1396         const u8 *ssid;
1397         const u8 *supp_rates;
1398         const u8 *ds_params;
1399         const struct ieee80211_tim_ie *tim;
1400         const u8 *challenge;
1401         const u8 *rsn;
1402         const u8 *erp_info;
1403         const u8 *ext_supp_rates;
1404         const u8 *wmm_info;
1405         const u8 *wmm_param;
1406         const struct ieee80211_ht_cap *ht_cap_elem;
1407         const struct ieee80211_ht_operation *ht_operation;
1408         const struct ieee80211_vht_cap *vht_cap_elem;
1409         const struct ieee80211_vht_operation *vht_operation;
1410         const struct ieee80211_meshconf_ie *mesh_config;
1411         const u8 *mesh_id;
1412         const u8 *peering;
1413         const __le16 *awake_window;
1414         const u8 *preq;
1415         const u8 *prep;
1416         const u8 *perr;
1417         const struct ieee80211_rann_ie *rann;
1418         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1419         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1420         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1421         const u8 *country_elem;
1422         const u8 *pwr_constr_elem;
1423         const u8 *cisco_dtpc_elem;
1424         const struct ieee80211_timeout_interval_ie *timeout_int;
1425         const u8 *opmode_notif;
1426         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1427         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1428
1429         /* length of them, respectively */
1430         u8 ext_capab_len;
1431         u8 ssid_len;
1432         u8 supp_rates_len;
1433         u8 tim_len;
1434         u8 challenge_len;
1435         u8 rsn_len;
1436         u8 ext_supp_rates_len;
1437         u8 wmm_info_len;
1438         u8 wmm_param_len;
1439         u8 mesh_id_len;
1440         u8 peering_len;
1441         u8 preq_len;
1442         u8 prep_len;
1443         u8 perr_len;
1444         u8 country_elem_len;
1445
1446         /* whether a parse error occurred while retrieving these elements */
1447         bool parse_error;
1448 };
1449
1450 static inline struct ieee80211_local *hw_to_local(
1451         struct ieee80211_hw *hw)
1452 {
1453         return container_of(hw, struct ieee80211_local, hw);
1454 }
1455
1456 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1457 {
1458         return container_of(txq, struct txq_info, txq);
1459 }
1460
1461 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1462 {
1463         return ether_addr_equal(raddr, addr) ||
1464                is_broadcast_ether_addr(raddr);
1465 }
1466
1467 static inline bool
1468 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1469 {
1470         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1471                      status->flag & RX_FLAG_MACTIME_END);
1472         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1473 }
1474
1475 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1476                                      struct ieee80211_rx_status *status,
1477                                      unsigned int mpdu_len,
1478                                      unsigned int mpdu_offset);
1479 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1480 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1481 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1482                                       u32 changed);
1483 void ieee80211_configure_filter(struct ieee80211_local *local);
1484 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1485
1486 /* STA code */
1487 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1488 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1489                        struct cfg80211_auth_request *req);
1490 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1491                         struct cfg80211_assoc_request *req);
1492 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1493                          struct cfg80211_deauth_request *req);
1494 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1495                            struct cfg80211_disassoc_request *req);
1496 void ieee80211_send_pspoll(struct ieee80211_local *local,
1497                            struct ieee80211_sub_if_data *sdata);
1498 void ieee80211_recalc_ps(struct ieee80211_local *local);
1499 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1500 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1501 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1502 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1503                                   struct sk_buff *skb);
1504 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1505 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1506 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1507 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1508                                   __le16 fc, bool acked);
1509 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1511 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1512
1513 /* IBSS code */
1514 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1515 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1516 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1517                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1518 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1519                         struct cfg80211_ibss_params *params);
1520 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1521 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1522 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1523                                    struct sk_buff *skb);
1524 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1525                               struct cfg80211_csa_settings *csa_settings);
1526 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1527 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1528
1529 /* OCB code */
1530 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1531 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1532                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1533 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1534 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1535                        struct ocb_setup *setup);
1536 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1537
1538 /* mesh code */
1539 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1540 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1541                                    struct sk_buff *skb);
1542 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1543                               struct cfg80211_csa_settings *csa_settings);
1544 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1545
1546 /* scan/BSS handling */
1547 void ieee80211_scan_work(struct work_struct *work);
1548 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1549                                 const u8 *ssid, u8 ssid_len,
1550                                 struct ieee80211_channel **channels,
1551                                 unsigned int n_channels,
1552                                 enum nl80211_bss_scan_width scan_width);
1553 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1554                            struct cfg80211_scan_request *req);
1555 void ieee80211_scan_cancel(struct ieee80211_local *local);
1556 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1557 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1558
1559 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1560 struct ieee80211_bss *
1561 ieee80211_bss_info_update(struct ieee80211_local *local,
1562                           struct ieee80211_rx_status *rx_status,
1563                           struct ieee80211_mgmt *mgmt,
1564                           size_t len,
1565                           struct ieee802_11_elems *elems,
1566                           struct ieee80211_channel *channel);
1567 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1568                           struct ieee80211_bss *bss);
1569
1570 /* scheduled scan handling */
1571 int
1572 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1573                                      struct cfg80211_sched_scan_request *req);
1574 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1575                                        struct cfg80211_sched_scan_request *req);
1576 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1577 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1578 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1579
1580 /* off-channel helpers */
1581 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1582 void ieee80211_offchannel_return(struct ieee80211_local *local);
1583 void ieee80211_roc_setup(struct ieee80211_local *local);
1584 void ieee80211_start_next_roc(struct ieee80211_local *local);
1585 void ieee80211_roc_purge(struct ieee80211_local *local,
1586                          struct ieee80211_sub_if_data *sdata);
1587 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1588 void ieee80211_sw_roc_work(struct work_struct *work);
1589 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1590
1591 /* channel switch handling */
1592 void ieee80211_csa_finalize_work(struct work_struct *work);
1593 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1594                              struct cfg80211_csa_settings *params);
1595
1596 /* interface handling */
1597 int ieee80211_iface_init(void);
1598 void ieee80211_iface_exit(void);
1599 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1600                      unsigned char name_assign_type,
1601                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1602                      struct vif_params *params);
1603 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1604                              enum nl80211_iftype type);
1605 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1606 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1607 u32 ieee80211_idle_off(struct ieee80211_local *local);
1608 void ieee80211_recalc_idle(struct ieee80211_local *local);
1609 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1610                                     const int offset);
1611 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1612 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1613 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1614 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1615
1616 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1617 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1618                               bool update_bss);
1619
1620 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1621 {
1622         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1623 }
1624
1625 /* tx handling */
1626 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1627 void ieee80211_tx_pending(unsigned long data);
1628 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1629                                          struct net_device *dev);
1630 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1631                                        struct net_device *dev);
1632 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1633                                   struct net_device *dev,
1634                                   u32 info_flags);
1635 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1636                               struct sk_buff_head *skbs);
1637 struct sk_buff *
1638 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1639                               struct sk_buff *skb, u32 info_flags);
1640 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1641                           struct ieee80211_supported_band *sband,
1642                           int retry_count, int shift, bool send_to_cooked);
1643
1644 void ieee80211_check_fast_xmit(struct sta_info *sta);
1645 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1646 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1647 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1648
1649 /* HT */
1650 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1651                                      struct ieee80211_sta_ht_cap *ht_cap);
1652 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1653                                        struct ieee80211_supported_band *sband,
1654                                        const struct ieee80211_ht_cap *ht_cap_ie,
1655                                        struct sta_info *sta);
1656 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1657                           const u8 *da, u16 tid,
1658                           u16 initiator, u16 reason_code);
1659 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1660                                enum ieee80211_smps_mode smps, const u8 *da,
1661                                const u8 *bssid);
1662 void ieee80211_request_smps_ap_work(struct work_struct *work);
1663 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1664 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1665                                    enum ieee80211_smps_mode smps_mode_new);
1666
1667 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1668                                      u16 initiator, u16 reason, bool stop);
1669 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1670                                     u16 initiator, u16 reason, bool stop);
1671 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1672                                      u8 dialog_token, u16 timeout,
1673                                      u16 start_seq_num, u16 ba_policy, u16 tid,
1674                                      u16 buf_size, bool tx, bool auto_seq);
1675 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1676                                          enum ieee80211_agg_stop_reason reason);
1677 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1678                              struct sta_info *sta,
1679                              struct ieee80211_mgmt *mgmt, size_t len);
1680 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1681                                   struct sta_info *sta,
1682                                   struct ieee80211_mgmt *mgmt,
1683                                   size_t len);
1684 void ieee80211_process_addba_request(struct ieee80211_local *local,
1685                                      struct sta_info *sta,
1686                                      struct ieee80211_mgmt *mgmt,
1687                                      size_t len);
1688
1689 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1690                                    enum ieee80211_agg_stop_reason reason);
1691 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1692                                     enum ieee80211_agg_stop_reason reason);
1693 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1694 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1695 void ieee80211_ba_session_work(struct work_struct *work);
1696 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1697 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1698
1699 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1700
1701 /* VHT */
1702 void
1703 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1704                                     struct ieee80211_supported_band *sband,
1705                                     const struct ieee80211_vht_cap *vht_cap_ie,
1706                                     struct sta_info *sta);
1707 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1708 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1709 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1710 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1711                                   struct sta_info *sta, u8 opmode,
1712                                   enum ieee80211_band band);
1713 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1714                                  struct sta_info *sta, u8 opmode,
1715                                  enum ieee80211_band band);
1716 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1717                                       struct ieee80211_sta_vht_cap *vht_cap);
1718 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1719                                      u16 vht_mask[NL80211_VHT_NSS_MAX]);
1720
1721 /* Spectrum management */
1722 void 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  */
1741 int 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 */
1748 int ieee80211_reconfig(struct ieee80211_local *local);
1749 void ieee80211_stop_device(struct ieee80211_local *local);
1750
1751 int __ieee80211_suspend(struct ieee80211_hw *hw,
1752                         struct cfg80211_wowlan *wowlan);
1753
1754 static 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 */
1767 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1768 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1769                              int rate, int erp, int short_preamble,
1770                              int shift);
1771 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1772                                bool bss_notify, bool enable_qos);
1773 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1774                     struct sta_info *sta, struct sk_buff *skb);
1775
1776 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1777                                  struct sk_buff *skb, int tid,
1778                                  enum ieee80211_band band);
1779
1780 static inline void
1781 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1782                           struct sk_buff *skb, int tid,
1783                           enum ieee80211_band band)
1784 {
1785         rcu_read_lock();
1786         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1787         rcu_read_unlock();
1788 }
1789
1790 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1791                                         struct sk_buff *skb, int tid)
1792 {
1793         struct ieee80211_chanctx_conf *chanctx_conf;
1794
1795         rcu_read_lock();
1796         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1797         if (WARN_ON(!chanctx_conf)) {
1798                 rcu_read_unlock();
1799                 kfree_skb(skb);
1800                 return;
1801         }
1802
1803         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1804                                     chanctx_conf->def.chan->band);
1805         rcu_read_unlock();
1806 }
1807
1808 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1809                                     struct sk_buff *skb)
1810 {
1811         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1812         ieee80211_tx_skb_tid(sdata, skb, 7);
1813 }
1814
1815 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1816                                struct ieee802_11_elems *elems,
1817                                u64 filter, u32 crc);
1818 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1819                                           bool action,
1820                                           struct ieee802_11_elems *elems)
1821 {
1822         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1823 }
1824
1825 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1826 {
1827         struct sk_buff *tail = skb_peek_tail(frames);
1828         struct ieee80211_rx_status *status;
1829
1830         if (!tail)
1831                 return false;
1832
1833         status = IEEE80211_SKB_RXCB(tail);
1834         if (status->flag & RX_FLAG_AMSDU_MORE)
1835                 return false;
1836
1837         return true;
1838 }
1839
1840 extern const int ieee802_1d_to_ac[8];
1841
1842 static inline int ieee80211_ac_from_tid(int tid)
1843 {
1844         return ieee802_1d_to_ac[tid & 7];
1845 }
1846
1847 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1848 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1849 void ieee80211_dynamic_ps_timer(unsigned long data);
1850 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1851                              struct ieee80211_sub_if_data *sdata,
1852                              bool powersave);
1853 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1854                              struct ieee80211_hdr *hdr);
1855 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1856                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1857
1858 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1859                                      unsigned long queues,
1860                                      enum queue_stop_reason reason,
1861                                      bool refcounted);
1862 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1863                                struct ieee80211_sub_if_data *sdata,
1864                                enum queue_stop_reason reason);
1865 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1866                                struct ieee80211_sub_if_data *sdata,
1867                                enum queue_stop_reason reason);
1868 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1869                                      unsigned long queues,
1870                                      enum queue_stop_reason reason,
1871                                      bool refcounted);
1872 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1873                                     enum queue_stop_reason reason,
1874                                     bool refcounted);
1875 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1876                                     enum queue_stop_reason reason,
1877                                     bool refcounted);
1878 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1879 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1880                                struct sk_buff *skb);
1881 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1882                                 struct sk_buff_head *skbs);
1883 void ieee80211_flush_queues(struct ieee80211_local *local,
1884                             struct ieee80211_sub_if_data *sdata, bool drop);
1885 void __ieee80211_flush_queues(struct ieee80211_local *local,
1886                               struct ieee80211_sub_if_data *sdata,
1887                               unsigned int queues, bool drop);
1888
1889 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1890 {
1891         /*
1892          * If quiescing is set, we are racing with __ieee80211_suspend.
1893          * __ieee80211_suspend flushes the workers after setting quiescing,
1894          * and we check quiescing / suspended before enqueing new workers.
1895          * We should abort the worker to avoid the races below.
1896          */
1897         if (local->quiescing)
1898                 return false;
1899
1900         /*
1901          * We might already be suspended if the following scenario occurs:
1902          * __ieee80211_suspend          Control path
1903          *
1904          *                              if (local->quiescing)
1905          *                                      return;
1906          * local->quiescing = true;
1907          * flush_workqueue();
1908          *                              queue_work(...);
1909          * local->suspended = true;
1910          * local->quiescing = false;
1911          *                              worker starts running...
1912          */
1913         if (local->suspended)
1914                 return false;
1915
1916         return true;
1917 }
1918
1919 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
1920                              struct sta_info *sta,
1921                              struct txq_info *txq, int tid);
1922 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1923                          u16 transaction, u16 auth_alg, u16 status,
1924                          const u8 *extra, size_t extra_len, const u8 *bssid,
1925                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1926                          u32 tx_flags);
1927 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1928                                     const u8 *bssid, u16 stype, u16 reason,
1929                                     bool send_frame, u8 *frame_buf);
1930 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1931                              size_t buffer_len,
1932                              struct ieee80211_scan_ies *ie_desc,
1933                              const u8 *ie, size_t ie_len,
1934                              u8 bands_used, u32 *rate_masks,
1935                              struct cfg80211_chan_def *chandef);
1936 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1937                                           const u8 *src, const u8 *dst,
1938                                           u32 ratemask,
1939                                           struct ieee80211_channel *chan,
1940                                           const u8 *ssid, size_t ssid_len,
1941                                           const u8 *ie, size_t ie_len,
1942                                           bool directed);
1943 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1944                               const u8 *src, const u8 *dst,
1945                               const u8 *ssid, size_t ssid_len,
1946                               const u8 *ie, size_t ie_len,
1947                               u32 ratemask, bool directed, u32 tx_flags,
1948                               struct ieee80211_channel *channel, bool scan);
1949
1950 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1951                             struct ieee802_11_elems *elems,
1952                             enum ieee80211_band band, u32 *basic_rates);
1953 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1954                                  enum ieee80211_smps_mode smps_mode);
1955 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1956                                 enum ieee80211_smps_mode smps_mode);
1957 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1958 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1959
1960 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1961 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1962                               u16 cap);
1963 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1964                                const struct cfg80211_chan_def *chandef,
1965                                u16 prot_mode, bool rifs_mode);
1966 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1967                                u32 cap);
1968 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1969                                 const struct cfg80211_chan_def *chandef);
1970 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1971                              const struct ieee80211_supported_band *sband,
1972                              const u8 *srates, int srates_len, u32 *rates);
1973 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1974                             struct sk_buff *skb, bool need_basic,
1975                             enum ieee80211_band band);
1976 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1977                                 struct sk_buff *skb, bool need_basic,
1978                                 enum ieee80211_band band);
1979 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1980
1981 /* channel management */
1982 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1983                                   const struct ieee80211_ht_operation *ht_oper,
1984                                   struct cfg80211_chan_def *chandef);
1985 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan,
1986                                    const struct ieee80211_vht_operation *oper,
1987                                    struct cfg80211_chan_def *chandef);
1988 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1989
1990 int __must_check
1991 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1992                           const struct cfg80211_chan_def *chandef,
1993                           enum ieee80211_chanctx_mode mode);
1994 int __must_check
1995 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1996                               const struct cfg80211_chan_def *chandef,
1997                               enum ieee80211_chanctx_mode mode,
1998                               bool radar_required);
1999 int __must_check
2000 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2001 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2002
2003 int __must_check
2004 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2005                                const struct cfg80211_chan_def *chandef,
2006                                u32 *changed);
2007 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2008 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2009 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2010                                          bool clear);
2011 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2012                                struct ieee80211_chanctx *ctx);
2013
2014 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2015                                    struct ieee80211_chanctx *chanctx);
2016 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2017                                       struct ieee80211_chanctx *ctx);
2018 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2019
2020 void ieee80211_dfs_cac_timer(unsigned long data);
2021 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2022 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2023 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2024 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2025                               struct cfg80211_csa_settings *csa_settings);
2026
2027 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2028 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2029 const struct ieee80211_cipher_scheme *
2030 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2031                  enum nl80211_iftype iftype);
2032 int ieee80211_cs_headroom(struct ieee80211_local *local,
2033                           struct cfg80211_crypto_settings *crypto,
2034                           enum nl80211_iftype iftype);
2035 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2036                            struct ieee80211_sub_if_data *sdata);
2037 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2038                                  const struct cfg80211_chan_def *chandef,
2039                                  enum ieee80211_chanctx_mode chanmode,
2040                                  u8 radar_detect);
2041 int ieee80211_max_num_channels(struct ieee80211_local *local);
2042 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2043 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2044                                        struct ieee80211_chanctx *ctx);
2045
2046 /* TDLS */
2047 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2048                         const u8 *peer, u8 action_code, u8 dialog_token,
2049                         u16 status_code, u32 peer_capability,
2050                         bool initiator, const u8 *extra_ies,
2051                         size_t extra_ies_len);
2052 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2053                         const u8 *peer, enum nl80211_tdls_operation oper);
2054 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2055 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2056                                   const u8 *addr, u8 oper_class,
2057                                   struct cfg80211_chan_def *chandef);
2058 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2059                                           struct net_device *dev,
2060                                           const u8 *addr);
2061 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2062 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2063
2064 extern const struct ethtool_ops ieee80211_ethtool_ops;
2065
2066 #ifdef CONFIG_MAC80211_NOINLINE
2067 #define debug_noinline noinline
2068 #else
2069 #define debug_noinline
2070 #endif
2071
2072 #endif /* IEEE80211_I_H */