linux/net/mac80211/ieee80211_i.h
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   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 2013-2015  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 <net/fq.h>
  34#include "key.h"
  35#include "sta_info.h"
  36#include "debug.h"
  37
  38extern const struct cfg80211_ops mac80211_config_ops;
  39
  40struct ieee80211_local;
  41
  42/* Maximum number of broadcast/multicast frames to buffer when some of the
  43 * associated stations are using power saving. */
  44#define AP_MAX_BC_BUFFER 128
  45
  46/* Maximum number of frames buffered to all STAs, including multicast frames.
  47 * Note: increasing this limit increases the potential memory requirement. Each
  48 * frame can be up to about 2 kB long. */
  49#define TOTAL_MAX_TX_BUFFER 512
  50
  51/* Required encryption head and tailroom */
  52#define IEEE80211_ENCRYPT_HEADROOM 8
  53#define IEEE80211_ENCRYPT_TAILROOM 18
  54
  55/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  56 * reception of at least three fragmented frames. This limit can be increased
  57 * by changing this define, at the cost of slower frame reassembly and
  58 * increased memory use (about 2 kB of RAM per entry). */
  59#define IEEE80211_FRAGMENT_MAX 4
  60
  61/* power level hasn't been configured (or set to automatic) */
  62#define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  63
  64/*
  65 * Some APs experience problems when working with U-APSD. Decreasing the
  66 * probability of that happening by using legacy mode for all ACs but VO isn't
  67 * enough.
  68 *
  69 * Cisco 4410N originally forced us to enable VO by default only because it
  70 * treated non-VO ACs as legacy.
  71 *
  72 * However some APs (notably Netgear R7000) silently reclassify packets to
  73 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
  74 * clients would never see some frames (e.g. ARP responses) or would fetch them
  75 * accidentally after a long time.
  76 *
  77 * It makes little sense to enable u-APSD queues by default because it needs
  78 * userspace applications to be aware of it to actually take advantage of the
  79 * possible additional powersavings. Implicitly depending on driver autotrigger
  80 * frame support doesn't make much sense.
  81 */
  82#define IEEE80211_DEFAULT_UAPSD_QUEUES 0
  83
  84#define IEEE80211_DEFAULT_MAX_SP_LEN            \
  85        IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  86
  87extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
  88
  89#define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  90
  91#define IEEE80211_MAX_NAN_INSTANCE_ID 255
  92
  93struct ieee80211_fragment_entry {
  94        struct sk_buff_head skb_list;
  95        unsigned long first_frag_time;
  96        u16 seq;
  97        u16 extra_len;
  98        u16 last_frag;
  99        u8 rx_queue;
 100        bool check_sequential_pn; /* needed for CCMP/GCMP */
 101        u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
 102};
 103
 104
 105struct ieee80211_bss {
 106        u32 device_ts_beacon, device_ts_presp;
 107
 108        bool wmm_used;
 109        bool uapsd_supported;
 110
 111#define IEEE80211_MAX_SUPP_RATES 32
 112        u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 113        size_t supp_rates_len;
 114        struct ieee80211_rate *beacon_rate;
 115
 116        /*
 117         * During association, we save an ERP value from a probe response so
 118         * that we can feed ERP info to the driver when handling the
 119         * association completes. these fields probably won't be up-to-date
 120         * otherwise, you probably don't want to use them.
 121         */
 122        bool has_erp_value;
 123        u8 erp_value;
 124
 125        /* Keep track of the corruption of the last beacon/probe response. */
 126        u8 corrupt_data;
 127
 128        /* Keep track of what bits of information we have valid info for. */
 129        u8 valid_data;
 130};
 131
 132/**
 133 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 134 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 135 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 136 *
 137 * These are bss flags that are attached to a bss in the
 138 * @corrupt_data field of &struct ieee80211_bss.
 139 */
 140enum ieee80211_bss_corrupt_data_flags {
 141        IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 142        IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 143};
 144
 145/**
 146 * enum ieee80211_valid_data_flags - BSS valid data flags
 147 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 148 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 149 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 150 *
 151 * These are bss flags that are attached to a bss in the
 152 * @valid_data field of &struct ieee80211_bss.  They show which parts
 153 * of the data structure were received as a result of an un-corrupted
 154 * beacon/probe response.
 155 */
 156enum ieee80211_bss_valid_data_flags {
 157        IEEE80211_BSS_VALID_WMM                 = BIT(1),
 158        IEEE80211_BSS_VALID_RATES               = BIT(2),
 159        IEEE80211_BSS_VALID_ERP                 = BIT(3)
 160};
 161
 162typedef unsigned __bitwise ieee80211_tx_result;
 163#define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 164#define TX_DROP         ((__force ieee80211_tx_result) 1u)
 165#define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 166
 167#define IEEE80211_TX_UNICAST            BIT(1)
 168#define IEEE80211_TX_PS_BUFFERED        BIT(2)
 169
 170struct ieee80211_tx_data {
 171        struct sk_buff *skb;
 172        struct sk_buff_head skbs;
 173        struct ieee80211_local *local;
 174        struct ieee80211_sub_if_data *sdata;
 175        struct sta_info *sta;
 176        struct ieee80211_key *key;
 177        struct ieee80211_tx_rate rate;
 178
 179        unsigned int flags;
 180};
 181
 182
 183typedef unsigned __bitwise ieee80211_rx_result;
 184#define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 185#define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 186#define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 187#define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 188
 189/**
 190 * enum ieee80211_packet_rx_flags - packet RX flags
 191 * @IEEE80211_RX_AMSDU: a-MSDU packet
 192 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 193 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 194 *
 195 * These are per-frame flags that are attached to a frame in the
 196 * @rx_flags field of &struct ieee80211_rx_status.
 197 */
 198enum ieee80211_packet_rx_flags {
 199        IEEE80211_RX_AMSDU                      = BIT(3),
 200        IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 201        IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 202};
 203
 204/**
 205 * enum ieee80211_rx_flags - RX data flags
 206 *
 207 * @IEEE80211_RX_CMNTR: received on cooked monitor already
 208 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 209 *      to cfg80211_report_obss_beacon().
 210 *
 211 * These flags are used across handling multiple interfaces
 212 * for a single frame.
 213 */
 214enum ieee80211_rx_flags {
 215        IEEE80211_RX_CMNTR              = BIT(0),
 216        IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 217};
 218
 219struct ieee80211_rx_data {
 220        struct napi_struct *napi;
 221        struct sk_buff *skb;
 222        struct ieee80211_local *local;
 223        struct ieee80211_sub_if_data *sdata;
 224        struct sta_info *sta;
 225        struct ieee80211_key *key;
 226
 227        unsigned int flags;
 228
 229        /*
 230         * Index into sequence numbers array, 0..16
 231         * since the last (16) is used for non-QoS,
 232         * will be 16 on non-QoS frames.
 233         */
 234        int seqno_idx;
 235
 236        /*
 237         * Index into the security IV/PN arrays, 0..16
 238         * since the last (16) is used for CCMP-encrypted
 239         * management frames, will be set to 16 on mgmt
 240         * frames and 0 on non-QoS frames.
 241         */
 242        int security_idx;
 243
 244        u32 tkip_iv32;
 245        u16 tkip_iv16;
 246};
 247
 248struct ieee80211_csa_settings {
 249        const u16 *counter_offsets_beacon;
 250        const u16 *counter_offsets_presp;
 251
 252        int n_counter_offsets_beacon;
 253        int n_counter_offsets_presp;
 254
 255        u8 count;
 256};
 257
 258struct beacon_data {
 259        u8 *head, *tail;
 260        int head_len, tail_len;
 261        struct ieee80211_meshconf_ie *meshconf;
 262        u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 263        u8 csa_current_counter;
 264        struct rcu_head rcu_head;
 265};
 266
 267struct probe_resp {
 268        struct rcu_head rcu_head;
 269        int len;
 270        u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 271        u8 data[0];
 272};
 273
 274struct ps_data {
 275        /* yes, this looks ugly, but guarantees that we can later use
 276         * bitmap_empty :)
 277         * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 278        u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 279                        __aligned(__alignof__(unsigned long));
 280        struct sk_buff_head bc_buf;
 281        atomic_t num_sta_ps; /* number of stations in PS mode */
 282        int dtim_count;
 283        bool dtim_bc_mc;
 284};
 285
 286struct ieee80211_if_ap {
 287        struct beacon_data __rcu *beacon;
 288        struct probe_resp __rcu *probe_resp;
 289
 290        /* to be used after channel switch. */
 291        struct cfg80211_beacon_data *next_beacon;
 292        struct list_head vlans; /* write-protected with RTNL and local->mtx */
 293
 294        struct ps_data ps;
 295        atomic_t num_mcast_sta; /* number of stations receiving multicast */
 296        enum ieee80211_smps_mode req_smps, /* requested smps mode */
 297                         driver_smps_mode; /* smps mode request */
 298
 299        struct work_struct request_smps_work;
 300        bool multicast_to_unicast;
 301};
 302
 303struct ieee80211_if_wds {
 304        struct sta_info *sta;
 305        u8 remote_addr[ETH_ALEN];
 306};
 307
 308struct ieee80211_if_vlan {
 309        struct list_head list; /* write-protected with RTNL and local->mtx */
 310
 311        /* used for all tx if the VLAN is configured to 4-addr mode */
 312        struct sta_info __rcu *sta;
 313        atomic_t num_mcast_sta; /* number of stations receiving multicast */
 314};
 315
 316struct mesh_stats {
 317        __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 318        __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 319        __u32 fwded_frames;             /* Mesh total forwarded frames */
 320        __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 321        __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 322        __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 323};
 324
 325#define PREQ_Q_F_START          0x1
 326#define PREQ_Q_F_REFRESH        0x2
 327struct mesh_preq_queue {
 328        struct list_head list;
 329        u8 dst[ETH_ALEN];
 330        u8 flags;
 331};
 332
 333struct ieee80211_roc_work {
 334        struct list_head list;
 335
 336        struct ieee80211_sub_if_data *sdata;
 337
 338        struct ieee80211_channel *chan;
 339
 340        bool started, abort, hw_begun, notified;
 341        bool on_channel;
 342
 343        unsigned long start_time;
 344
 345        u32 duration, req_duration;
 346        struct sk_buff *frame;
 347        u64 cookie, mgmt_tx_cookie;
 348        enum ieee80211_roc_type type;
 349};
 350
 351/* flags used in struct ieee80211_if_managed.flags */
 352enum ieee80211_sta_flags {
 353        IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 354        IEEE80211_STA_CONTROL_PORT      = BIT(2),
 355        IEEE80211_STA_DISABLE_HT        = BIT(4),
 356        IEEE80211_STA_MFP_ENABLED       = BIT(6),
 357        IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 358        IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 359        IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 360        IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 361        IEEE80211_STA_DISABLE_VHT       = BIT(11),
 362        IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 363        IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 364        IEEE80211_STA_DISABLE_WMM       = BIT(14),
 365        IEEE80211_STA_ENABLE_RRM        = BIT(15),
 366};
 367
 368struct ieee80211_mgd_auth_data {
 369        struct cfg80211_bss *bss;
 370        unsigned long timeout;
 371        int tries;
 372        u16 algorithm, expected_transaction;
 373
 374        u8 key[WLAN_KEY_LEN_WEP104];
 375        u8 key_len, key_idx;
 376        bool done;
 377        bool timeout_started;
 378
 379        u16 sae_trans, sae_status;
 380        size_t data_len;
 381        u8 data[];
 382};
 383
 384struct ieee80211_mgd_assoc_data {
 385        struct cfg80211_bss *bss;
 386        const u8 *supp_rates;
 387
 388        unsigned long timeout;
 389        int tries;
 390
 391        u16 capability;
 392        u8 prev_bssid[ETH_ALEN];
 393        u8 ssid[IEEE80211_MAX_SSID_LEN];
 394        u8 ssid_len;
 395        u8 supp_rates_len;
 396        bool wmm, uapsd;
 397        bool need_beacon;
 398        bool synced;
 399        bool timeout_started;
 400
 401        u8 ap_ht_param;
 402
 403        struct ieee80211_vht_cap ap_vht_cap;
 404
 405        size_t ie_len;
 406        u8 ie[];
 407};
 408
 409struct ieee80211_sta_tx_tspec {
 410        /* timestamp of the first packet in the time slice */
 411        unsigned long time_slice_start;
 412
 413        u32 admitted_time; /* in usecs, unlike over the air */
 414        u8 tsid;
 415        s8 up; /* signed to be able to invalidate with -1 during teardown */
 416
 417        /* consumed TX time in microseconds in the time slice */
 418        u32 consumed_tx_time;
 419        enum {
 420                TX_TSPEC_ACTION_NONE = 0,
 421                TX_TSPEC_ACTION_DOWNGRADE,
 422                TX_TSPEC_ACTION_STOP_DOWNGRADE,
 423        } action;
 424        bool downgraded;
 425};
 426
 427DECLARE_EWMA(beacon_signal, 16, 4)
 428
 429struct ieee80211_if_managed {
 430        struct timer_list timer;
 431        struct timer_list conn_mon_timer;
 432        struct timer_list bcn_mon_timer;
 433        struct timer_list chswitch_timer;
 434        struct work_struct monitor_work;
 435        struct work_struct chswitch_work;
 436        struct work_struct beacon_connection_loss_work;
 437        struct work_struct csa_connection_drop_work;
 438
 439        unsigned long beacon_timeout;
 440        unsigned long probe_timeout;
 441        int probe_send_count;
 442        bool nullfunc_failed;
 443        bool connection_loss;
 444
 445        struct cfg80211_bss *associated;
 446        struct ieee80211_mgd_auth_data *auth_data;
 447        struct ieee80211_mgd_assoc_data *assoc_data;
 448
 449        u8 bssid[ETH_ALEN] __aligned(2);
 450
 451        u16 aid;
 452
 453        bool powersave; /* powersave requested for this iface */
 454        bool broken_ap; /* AP is broken -- turn off powersave */
 455        bool have_beacon;
 456        u8 dtim_period;
 457        enum ieee80211_smps_mode req_smps, /* requested smps mode */
 458                                 driver_smps_mode; /* smps mode request */
 459
 460        struct work_struct request_smps_work;
 461
 462        unsigned int flags;
 463
 464        bool csa_waiting_bcn;
 465        bool csa_ignored_same_chan;
 466
 467        bool beacon_crc_valid;
 468        u32 beacon_crc;
 469
 470        bool status_acked;
 471        bool status_received;
 472        __le16 status_fc;
 473
 474        enum {
 475                IEEE80211_MFP_DISABLED,
 476                IEEE80211_MFP_OPTIONAL,
 477                IEEE80211_MFP_REQUIRED
 478        } mfp; /* management frame protection */
 479
 480        /*
 481         * Bitmask of enabled u-apsd queues,
 482         * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 483         * to take effect.
 484         */
 485        unsigned int uapsd_queues;
 486
 487        /*
 488         * Maximum number of buffered frames AP can deliver during a
 489         * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 490         * Needs a new association to take effect.
 491         */
 492        unsigned int uapsd_max_sp_len;
 493
 494        int wmm_last_param_set;
 495
 496        u8 use_4addr;
 497
 498        s16 p2p_noa_index;
 499
 500        struct ewma_beacon_signal ave_beacon_signal;
 501
 502        /*
 503         * Number of Beacon frames used in ave_beacon_signal. This can be used
 504         * to avoid generating less reliable cqm events that would be based
 505         * only on couple of received frames.
 506         */
 507        unsigned int count_beacon_signal;
 508
 509        /* Number of times beacon loss was invoked. */
 510        unsigned int beacon_loss_count;
 511
 512        /*
 513         * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 514         * that triggered a cqm event. 0 indicates that no event has been
 515         * generated for the current association.
 516         */
 517        int last_cqm_event_signal;
 518
 519        /*
 520         * State variables for keeping track of RSSI of the AP currently
 521         * connected to and informing driver when RSSI has gone
 522         * below/above a certain threshold.
 523         */
 524        int rssi_min_thold, rssi_max_thold;
 525        int last_ave_beacon_signal;
 526
 527        struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 528        struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 529        struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 530        struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 531
 532        /* TDLS support */
 533        u8 tdls_peer[ETH_ALEN] __aligned(2);
 534        struct delayed_work tdls_peer_del_work;
 535        struct sk_buff *orig_teardown_skb; /* The original teardown skb */
 536        struct sk_buff *teardown_skb; /* A copy to send through the AP */
 537        spinlock_t teardown_lock; /* To lock changing teardown_skb */
 538        bool tdls_chan_switch_prohibited;
 539        bool tdls_wider_bw_prohibited;
 540
 541        /* WMM-AC TSPEC support */
 542        struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
 543        /* Use a separate work struct so that we can do something here
 544         * while the sdata->work is flushing the queues, for example.
 545         * otherwise, in scenarios where we hardly get any traffic out
 546         * on the BE queue, but there's a lot of VO traffic, we might
 547         * get stuck in a downgraded situation and flush takes forever.
 548         */
 549        struct delayed_work tx_tspec_wk;
 550};
 551
 552struct ieee80211_if_ibss {
 553        struct timer_list timer;
 554        struct work_struct csa_connection_drop_work;
 555
 556        unsigned long last_scan_completed;
 557
 558        u32 basic_rates;
 559
 560        bool fixed_bssid;
 561        bool fixed_channel;
 562        bool privacy;
 563
 564        bool control_port;
 565        bool userspace_handles_dfs;
 566
 567        u8 bssid[ETH_ALEN] __aligned(2);
 568        u8 ssid[IEEE80211_MAX_SSID_LEN];
 569        u8 ssid_len, ie_len;
 570        u8 *ie;
 571        struct cfg80211_chan_def chandef;
 572
 573        unsigned long ibss_join_req;
 574        /* probe response/beacon for IBSS */
 575        struct beacon_data __rcu *presp;
 576
 577        struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 578        struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 579
 580        spinlock_t incomplete_lock;
 581        struct list_head incomplete_stations;
 582
 583        enum {
 584                IEEE80211_IBSS_MLME_SEARCH,
 585                IEEE80211_IBSS_MLME_JOINED,
 586        } state;
 587};
 588
 589/**
 590 * struct ieee80211_if_ocb - OCB mode state
 591 *
 592 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
 593 * @wrkq_flags: OCB deferred task action
 594 * @incomplete_lock: delayed STA insertion lock
 595 * @incomplete_stations: list of STAs waiting for delayed insertion
 596 * @joined: indication if the interface is connected to an OCB network
 597 */
 598struct ieee80211_if_ocb {
 599        struct timer_list housekeeping_timer;
 600        unsigned long wrkq_flags;
 601
 602        spinlock_t incomplete_lock;
 603        struct list_head incomplete_stations;
 604
 605        bool joined;
 606};
 607
 608/**
 609 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 610 *
 611 * these declarations define the interface, which enables
 612 * vendor-specific mesh synchronization
 613 *
 614 */
 615struct ieee802_11_elems;
 616struct ieee80211_mesh_sync_ops {
 617        void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 618                             u16 stype,
 619                             struct ieee80211_mgmt *mgmt,
 620                             struct ieee802_11_elems *elems,
 621                             struct ieee80211_rx_status *rx_status);
 622
 623        /* should be called with beacon_data under RCU read lock */
 624        void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
 625                           struct beacon_data *beacon);
 626        /* add other framework functions here */
 627};
 628
 629struct mesh_csa_settings {
 630        struct rcu_head rcu_head;
 631        struct cfg80211_csa_settings settings;
 632};
 633
 634struct ieee80211_if_mesh {
 635        struct timer_list housekeeping_timer;
 636        struct timer_list mesh_path_timer;
 637        struct timer_list mesh_path_root_timer;
 638
 639        unsigned long wrkq_flags;
 640        unsigned long mbss_changed;
 641
 642        u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 643        size_t mesh_id_len;
 644        /* Active Path Selection Protocol Identifier */
 645        u8 mesh_pp_id;
 646        /* Active Path Selection Metric Identifier */
 647        u8 mesh_pm_id;
 648        /* Congestion Control Mode Identifier */
 649        u8 mesh_cc_id;
 650        /* Synchronization Protocol Identifier */
 651        u8 mesh_sp_id;
 652        /* Authentication Protocol Identifier */
 653        u8 mesh_auth_id;
 654        /* Local mesh Sequence Number */
 655        u32 sn;
 656        /* Last used PREQ ID */
 657        u32 preq_id;
 658        atomic_t mpaths;
 659        /* Timestamp of last SN update */
 660        unsigned long last_sn_update;
 661        /* Time when it's ok to send next PERR */
 662        unsigned long next_perr;
 663        /* Timestamp of last PREQ sent */
 664        unsigned long last_preq;
 665        struct mesh_rmc *rmc;
 666        spinlock_t mesh_preq_queue_lock;
 667        struct mesh_preq_queue preq_queue;
 668        int preq_queue_len;
 669        struct mesh_stats mshstats;
 670        struct mesh_config mshcfg;
 671        atomic_t estab_plinks;
 672        u32 mesh_seqnum;
 673        bool accepting_plinks;
 674        int num_gates;
 675        struct beacon_data __rcu *beacon;
 676        const u8 *ie;
 677        u8 ie_len;
 678        enum {
 679                IEEE80211_MESH_SEC_NONE = 0x0,
 680                IEEE80211_MESH_SEC_AUTHED = 0x1,
 681                IEEE80211_MESH_SEC_SECURED = 0x2,
 682        } security;
 683        bool user_mpm;
 684        /* Extensible Synchronization Framework */
 685        const struct ieee80211_mesh_sync_ops *sync_ops;
 686        s64 sync_offset_clockdrift_max;
 687        spinlock_t sync_offset_lock;
 688        /* mesh power save */
 689        enum nl80211_mesh_power_mode nonpeer_pm;
 690        int ps_peers_light_sleep;
 691        int ps_peers_deep_sleep;
 692        struct ps_data ps;
 693        /* Channel Switching Support */
 694        struct mesh_csa_settings __rcu *csa;
 695        enum {
 696                IEEE80211_MESH_CSA_ROLE_NONE,
 697                IEEE80211_MESH_CSA_ROLE_INIT,
 698                IEEE80211_MESH_CSA_ROLE_REPEATER,
 699        } csa_role;
 700        u8 chsw_ttl;
 701        u16 pre_value;
 702
 703        /* offset from skb->data while building IE */
 704        int meshconf_offset;
 705
 706        struct mesh_table *mesh_paths;
 707        struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
 708        int mesh_paths_generation;
 709        int mpp_paths_generation;
 710};
 711
 712#ifdef CONFIG_MAC80211_MESH
 713#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 714        do { (msh)->mshstats.name++; } while (0)
 715#else
 716#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 717        do { } while (0)
 718#endif
 719
 720/**
 721 * enum ieee80211_sub_if_data_flags - virtual interface flags
 722 *
 723 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 724 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 725 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 726 *      associated stations and deliver multicast frames both
 727 *      back to wireless media and to the local net stack.
 728 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 729 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 730 */
 731enum ieee80211_sub_if_data_flags {
 732        IEEE80211_SDATA_ALLMULTI                = BIT(0),
 733        IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 734        IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 735        IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 736        IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 737};
 738
 739/**
 740 * enum ieee80211_sdata_state_bits - virtual interface state bits
 741 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 742 *      mirrors netif_running() but is separate for interface type
 743 *      change handling while the interface is up
 744 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 745 *      mode, so queues are stopped
 746 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 747 *      to offchannel, reset when offchannel returns
 748 */
 749enum ieee80211_sdata_state_bits {
 750        SDATA_STATE_RUNNING,
 751        SDATA_STATE_OFFCHANNEL,
 752        SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 753};
 754
 755/**
 756 * enum ieee80211_chanctx_mode - channel context configuration mode
 757 *
 758 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 759 *      multiple interfaces
 760 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 761 *      only by a single interface. This can be used for example for
 762 *      non-fixed channel IBSS.
 763 */
 764enum ieee80211_chanctx_mode {
 765        IEEE80211_CHANCTX_SHARED,
 766        IEEE80211_CHANCTX_EXCLUSIVE
 767};
 768
 769/**
 770 * enum ieee80211_chanctx_replace_state - channel context replacement state
 771 *
 772 * This is used for channel context in-place reservations that require channel
 773 * context switch/swap.
 774 *
 775 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 776 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 777 *      by a (not yet registered) channel context pointed by %replace_ctx.
 778 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 779 *      replaces an existing channel context pointed to by %replace_ctx.
 780 */
 781enum ieee80211_chanctx_replace_state {
 782        IEEE80211_CHANCTX_REPLACE_NONE,
 783        IEEE80211_CHANCTX_WILL_BE_REPLACED,
 784        IEEE80211_CHANCTX_REPLACES_OTHER,
 785};
 786
 787struct ieee80211_chanctx {
 788        struct list_head list;
 789        struct rcu_head rcu_head;
 790
 791        struct list_head assigned_vifs;
 792        struct list_head reserved_vifs;
 793
 794        enum ieee80211_chanctx_replace_state replace_state;
 795        struct ieee80211_chanctx *replace_ctx;
 796
 797        enum ieee80211_chanctx_mode mode;
 798        bool driver_present;
 799
 800        struct ieee80211_chanctx_conf conf;
 801};
 802
 803struct mac80211_qos_map {
 804        struct cfg80211_qos_map qos_map;
 805        struct rcu_head rcu_head;
 806};
 807
 808enum txq_info_flags {
 809        IEEE80211_TXQ_STOP,
 810        IEEE80211_TXQ_AMPDU,
 811        IEEE80211_TXQ_NO_AMSDU,
 812};
 813
 814/**
 815 * struct txq_info - per tid queue
 816 *
 817 * @tin: contains packets split into multiple flows
 818 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
 819 *      a fq_flow which is already owned by a different tin
 820 * @def_cvars: codel vars for @def_flow
 821 * @frags: used to keep fragments created after dequeue
 822 */
 823struct txq_info {
 824        struct fq_tin tin;
 825        struct fq_flow def_flow;
 826        struct codel_vars def_cvars;
 827        struct codel_stats cstats;
 828        struct sk_buff_head frags;
 829        unsigned long flags;
 830
 831        /* keep last! */
 832        struct ieee80211_txq txq;
 833};
 834
 835struct ieee80211_if_mntr {
 836        u32 flags;
 837        u8 mu_follow_addr[ETH_ALEN] __aligned(2);
 838};
 839
 840/**
 841 * struct ieee80211_if_nan - NAN state
 842 *
 843 * @conf: current NAN configuration
 844 * @func_ids: a bitmap of available instance_id's
 845 */
 846struct ieee80211_if_nan {
 847        struct cfg80211_nan_conf conf;
 848
 849        /* protects function_inst_ids */
 850        spinlock_t func_lock;
 851        struct idr function_inst_ids;
 852};
 853
 854struct ieee80211_sub_if_data {
 855        struct list_head list;
 856
 857        struct wireless_dev wdev;
 858
 859        /* keys */
 860        struct list_head key_list;
 861
 862        /* count for keys needing tailroom space allocation */
 863        int crypto_tx_tailroom_needed_cnt;
 864        int crypto_tx_tailroom_pending_dec;
 865        struct delayed_work dec_tailroom_needed_wk;
 866
 867        struct net_device *dev;
 868        struct ieee80211_local *local;
 869
 870        unsigned int flags;
 871
 872        unsigned long state;
 873
 874        char name[IFNAMSIZ];
 875
 876        /* Fragment table for host-based reassembly */
 877        struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 878        unsigned int fragment_next;
 879
 880        /* TID bitmap for NoAck policy */
 881        u16 noack_map;
 882
 883        /* bit field of ACM bits (BIT(802.1D tag)) */
 884        u8 wmm_acm;
 885
 886        struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 887        struct ieee80211_key __rcu *default_unicast_key;
 888        struct ieee80211_key __rcu *default_multicast_key;
 889        struct ieee80211_key __rcu *default_mgmt_key;
 890
 891        u16 sequence_number;
 892        __be16 control_port_protocol;
 893        bool control_port_no_encrypt;
 894        int encrypt_headroom;
 895
 896        atomic_t num_tx_queued;
 897        struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 898        struct mac80211_qos_map __rcu *qos_map;
 899
 900        struct work_struct csa_finalize_work;
 901        bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 902        struct cfg80211_chan_def csa_chandef;
 903
 904        struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 905        struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 906
 907        /* context reservation -- protected with chanctx_mtx */
 908        struct ieee80211_chanctx *reserved_chanctx;
 909        struct cfg80211_chan_def reserved_chandef;
 910        bool reserved_radar_required;
 911        bool reserved_ready;
 912
 913        /* used to reconfigure hardware SM PS */
 914        struct work_struct recalc_smps;
 915
 916        struct work_struct work;
 917        struct sk_buff_head skb_queue;
 918
 919        u8 needed_rx_chains;
 920        enum ieee80211_smps_mode smps_mode;
 921
 922        int user_power_level; /* in dBm */
 923        int ap_power_level; /* in dBm */
 924
 925        bool radar_required;
 926        struct delayed_work dfs_cac_timer_work;
 927
 928        /*
 929         * AP this belongs to: self in AP mode and
 930         * corresponding AP in VLAN mode, NULL for
 931         * all others (might be needed later in IBSS)
 932         */
 933        struct ieee80211_if_ap *bss;
 934
 935        /* bitmap of allowed (non-MCS) rate indexes for rate control */
 936        u32 rc_rateidx_mask[NUM_NL80211_BANDS];
 937
 938        bool rc_has_mcs_mask[NUM_NL80211_BANDS];
 939        u8  rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 940
 941        bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
 942        u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
 943
 944        union {
 945                struct ieee80211_if_ap ap;
 946                struct ieee80211_if_wds wds;
 947                struct ieee80211_if_vlan vlan;
 948                struct ieee80211_if_managed mgd;
 949                struct ieee80211_if_ibss ibss;
 950                struct ieee80211_if_mesh mesh;
 951                struct ieee80211_if_ocb ocb;
 952                struct ieee80211_if_mntr mntr;
 953                struct ieee80211_if_nan nan;
 954        } u;
 955
 956#ifdef CONFIG_MAC80211_DEBUGFS
 957        struct {
 958                struct dentry *subdir_stations;
 959                struct dentry *default_unicast_key;
 960                struct dentry *default_multicast_key;
 961                struct dentry *default_mgmt_key;
 962        } debugfs;
 963#endif
 964
 965        /* must be last, dynamically sized area in this! */
 966        struct ieee80211_vif vif;
 967};
 968
 969static inline
 970struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 971{
 972        return container_of(p, struct ieee80211_sub_if_data, vif);
 973}
 974
 975static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 976        __acquires(&sdata->wdev.mtx)
 977{
 978        mutex_lock(&sdata->wdev.mtx);
 979        __acquire(&sdata->wdev.mtx);
 980}
 981
 982static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 983        __releases(&sdata->wdev.mtx)
 984{
 985        mutex_unlock(&sdata->wdev.mtx);
 986        __release(&sdata->wdev.mtx);
 987}
 988
 989#define sdata_dereference(p, sdata) \
 990        rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 991
 992static inline void
 993sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 994{
 995        lockdep_assert_held(&sdata->wdev.mtx);
 996}
 997
 998static inline enum nl80211_band
 999ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
1000{
1001        enum nl80211_band band = NL80211_BAND_2GHZ;
1002        struct ieee80211_chanctx_conf *chanctx_conf;
1003
1004        rcu_read_lock();
1005        chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1006        if (!WARN_ON(!chanctx_conf))
1007                band = chanctx_conf->def.chan->band;
1008        rcu_read_unlock();
1009
1010        return band;
1011}
1012
1013static inline int
1014ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1015{
1016        switch (chandef->width) {
1017        case NL80211_CHAN_WIDTH_5:
1018                return 2;
1019        case NL80211_CHAN_WIDTH_10:
1020                return 1;
1021        default:
1022                return 0;
1023        }
1024}
1025
1026static inline int
1027ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1028{
1029        struct ieee80211_chanctx_conf *chanctx_conf;
1030        int shift = 0;
1031
1032        rcu_read_lock();
1033        chanctx_conf = rcu_dereference(vif->chanctx_conf);
1034        if (chanctx_conf)
1035                shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1036        rcu_read_unlock();
1037
1038        return shift;
1039}
1040
1041struct ieee80211_rx_agg {
1042        u8 addr[ETH_ALEN];
1043        u16 tid;
1044};
1045
1046enum sdata_queue_type {
1047        IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
1048        IEEE80211_SDATA_QUEUE_AGG_START         = 1,
1049        IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
1050        IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
1051        IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
1052};
1053
1054enum {
1055        IEEE80211_RX_MSG        = 1,
1056        IEEE80211_TX_STATUS_MSG = 2,
1057};
1058
1059enum queue_stop_reason {
1060        IEEE80211_QUEUE_STOP_REASON_DRIVER,
1061        IEEE80211_QUEUE_STOP_REASON_PS,
1062        IEEE80211_QUEUE_STOP_REASON_CSA,
1063        IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1064        IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1065        IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1066        IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1067        IEEE80211_QUEUE_STOP_REASON_FLUSH,
1068        IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1069        IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1070
1071        IEEE80211_QUEUE_STOP_REASONS,
1072};
1073
1074#ifdef CONFIG_MAC80211_LEDS
1075struct tpt_led_trigger {
1076        char name[32];
1077        const struct ieee80211_tpt_blink *blink_table;
1078        unsigned int blink_table_len;
1079        struct timer_list timer;
1080        unsigned long prev_traffic;
1081        unsigned long tx_bytes, rx_bytes;
1082        unsigned int active, want;
1083        bool running;
1084};
1085#endif
1086
1087/**
1088 * mac80211 scan flags - currently active scan mode
1089 *
1090 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1091 *      well be on the operating channel
1092 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1093 *      determine if we are on the operating channel or not
1094 * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1095 *      channel. This should not interrupt normal traffic.
1096 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1097 *      that the scan completed.
1098 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1099 *      a scan complete for an aborted scan.
1100 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1101 *      cancelled.
1102 */
1103enum {
1104        SCAN_SW_SCANNING,
1105        SCAN_HW_SCANNING,
1106        SCAN_ONCHANNEL_SCANNING,
1107        SCAN_COMPLETED,
1108        SCAN_ABORTED,
1109        SCAN_HW_CANCELLED,
1110};
1111
1112/**
1113 * enum mac80211_scan_state - scan state machine states
1114 *
1115 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1116 *      determines if we should keep on scanning or switch back to the
1117 *      operating channel
1118 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1119 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1120 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1121 *      send out data
1122 * @SCAN_RESUME: Resume the scan and scan the next channel
1123 * @SCAN_ABORT: Abort the scan and go back to operating channel
1124 */
1125enum mac80211_scan_state {
1126        SCAN_DECISION,
1127        SCAN_SET_CHANNEL,
1128        SCAN_SEND_PROBE,
1129        SCAN_SUSPEND,
1130        SCAN_RESUME,
1131        SCAN_ABORT,
1132};
1133
1134struct ieee80211_local {
1135        /* embed the driver visible part.
1136         * don't cast (use the static inlines below), but we keep
1137         * it first anyway so they become a no-op */
1138        struct ieee80211_hw hw;
1139
1140        struct fq fq;
1141        struct codel_vars *cvars;
1142        struct codel_params cparams;
1143
1144        const struct ieee80211_ops *ops;
1145
1146        /*
1147         * private workqueue to mac80211. mac80211 makes this accessible
1148         * via ieee80211_queue_work()
1149         */
1150        struct workqueue_struct *workqueue;
1151
1152        unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1153        int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1154        /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1155        spinlock_t queue_stop_reason_lock;
1156
1157        int open_count;
1158        int monitors, cooked_mntrs;
1159        /* number of interfaces with corresponding FIF_ flags */
1160        int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1161            fif_probe_req;
1162        int probe_req_reg;
1163        unsigned int filter_flags; /* FIF_* */
1164
1165        bool wiphy_ciphers_allocated;
1166
1167        bool use_chanctx;
1168
1169        /* protects the aggregated multicast list and filter calls */
1170        spinlock_t filter_lock;
1171
1172        /* used for uploading changed mc list */
1173        struct work_struct reconfig_filter;
1174
1175        /* aggregated multicast list */
1176        struct netdev_hw_addr_list mc_list;
1177
1178        bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1179
1180        /*
1181         * suspended is true if we finished all the suspend _and_ we have
1182         * not yet come up from resume. This is to be used by mac80211
1183         * to ensure driver sanity during suspend and mac80211's own
1184         * sanity. It can eventually be used for WoW as well.
1185         */
1186        bool suspended;
1187
1188        /*
1189         * Resuming is true while suspended, but when we're reprogramming the
1190         * hardware -- at that time it's allowed to use ieee80211_queue_work()
1191         * again even though some other parts of the stack are still suspended
1192         * and we still drop received frames to avoid waking the stack.
1193         */
1194        bool resuming;
1195
1196        /*
1197         * quiescing is true during the suspend process _only_ to
1198         * ease timer cancelling etc.
1199         */
1200        bool quiescing;
1201
1202        /* device is started */
1203        bool started;
1204
1205        /* device is during a HW reconfig */
1206        bool in_reconfig;
1207
1208        /* wowlan is enabled -- don't reconfig on resume */
1209        bool wowlan;
1210
1211        struct work_struct radar_detected_work;
1212
1213        /* number of RX chains the hardware has */
1214        u8 rx_chains;
1215
1216        int tx_headroom; /* required headroom for hardware/radiotap */
1217
1218        /* Tasklet and skb queue to process calls from IRQ mode. All frames
1219         * added to skb_queue will be processed, but frames in
1220         * skb_queue_unreliable may be dropped if the total length of these
1221         * queues increases over the limit. */
1222#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1223        struct tasklet_struct tasklet;
1224        struct sk_buff_head skb_queue;
1225        struct sk_buff_head skb_queue_unreliable;
1226
1227        spinlock_t rx_path_lock;
1228
1229        /* Station data */
1230        /*
1231         * The mutex only protects the list, hash table and
1232         * counter, reads are done with RCU.
1233         */
1234        struct mutex sta_mtx;
1235        spinlock_t tim_lock;
1236        unsigned long num_sta;
1237        struct list_head sta_list;
1238        struct rhltable sta_hash;
1239        struct timer_list sta_cleanup;
1240        int sta_generation;
1241
1242        struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1243        struct tasklet_struct tx_pending_tasklet;
1244
1245        atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1246
1247        /* number of interfaces with allmulti RX */
1248        atomic_t iff_allmultis;
1249
1250        struct rate_control_ref *rate_ctrl;
1251
1252        struct crypto_cipher *wep_tx_tfm;
1253        struct crypto_cipher *wep_rx_tfm;
1254        u32 wep_iv;
1255
1256        /* see iface.c */
1257        struct list_head interfaces;
1258        struct mutex iflist_mtx;
1259
1260        /*
1261         * Key mutex, protects sdata's key_list and sta_info's
1262         * key pointers (write access, they're RCU.)
1263         */
1264        struct mutex key_mtx;
1265
1266        /* mutex for scan and work locking */
1267        struct mutex mtx;
1268
1269        /* Scanning and BSS list */
1270        unsigned long scanning;
1271        struct cfg80211_ssid scan_ssid;
1272        struct cfg80211_scan_request *int_scan_req;
1273        struct cfg80211_scan_request __rcu *scan_req;
1274        struct ieee80211_scan_request *hw_scan_req;
1275        struct cfg80211_chan_def scan_chandef;
1276        enum nl80211_band hw_scan_band;
1277        int scan_channel_idx;
1278        int scan_ies_len;
1279        int hw_scan_ies_bufsize;
1280        struct cfg80211_scan_info scan_info;
1281
1282        struct work_struct sched_scan_stopped_work;
1283        struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1284        struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1285        u8 scan_addr[ETH_ALEN];
1286
1287        unsigned long leave_oper_channel_time;
1288        enum mac80211_scan_state next_scan_state;
1289        struct delayed_work scan_work;
1290        struct ieee80211_sub_if_data __rcu *scan_sdata;
1291        /* For backward compatibility only -- do not use */
1292        struct cfg80211_chan_def _oper_chandef;
1293
1294        /* Temporary remain-on-channel for off-channel operations */
1295        struct ieee80211_channel *tmp_channel;
1296
1297        /* channel contexts */
1298        struct list_head chanctx_list;
1299        struct mutex chanctx_mtx;
1300
1301#ifdef CONFIG_MAC80211_LEDS
1302        struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1303        struct led_trigger tpt_led;
1304        atomic_t tx_led_active, rx_led_active, assoc_led_active;
1305        atomic_t radio_led_active, tpt_led_active;
1306        struct tpt_led_trigger *tpt_led_trigger;
1307#endif
1308
1309#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1310        /* SNMP counters */
1311        /* dot11CountersTable */
1312        u32 dot11TransmittedFragmentCount;
1313        u32 dot11MulticastTransmittedFrameCount;
1314        u32 dot11FailedCount;
1315        u32 dot11RetryCount;
1316        u32 dot11MultipleRetryCount;
1317        u32 dot11FrameDuplicateCount;
1318        u32 dot11ReceivedFragmentCount;
1319        u32 dot11MulticastReceivedFrameCount;
1320        u32 dot11TransmittedFrameCount;
1321
1322        /* TX/RX handler statistics */
1323        unsigned int tx_handlers_drop;
1324        unsigned int tx_handlers_queued;
1325        unsigned int tx_handlers_drop_wep;
1326        unsigned int tx_handlers_drop_not_assoc;
1327        unsigned int tx_handlers_drop_unauth_port;
1328        unsigned int rx_handlers_drop;
1329        unsigned int rx_handlers_queued;
1330        unsigned int rx_handlers_drop_nullfunc;
1331        unsigned int rx_handlers_drop_defrag;
1332        unsigned int tx_expand_skb_head;
1333        unsigned int tx_expand_skb_head_cloned;
1334        unsigned int rx_expand_skb_head_defrag;
1335        unsigned int rx_handlers_fragments;
1336        unsigned int tx_status_drop;
1337#define I802_DEBUG_INC(c) (c)++
1338#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1339#define I802_DEBUG_INC(c) do { } while (0)
1340#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1341
1342
1343        int total_ps_buffered; /* total number of all buffered unicast and
1344                                * multicast packets for power saving stations
1345                                */
1346
1347        bool pspolling;
1348        bool offchannel_ps_enabled;
1349        /*
1350         * PS can only be enabled when we have exactly one managed
1351         * interface (and monitors) in PS, this then points there.
1352         */
1353        struct ieee80211_sub_if_data *ps_sdata;
1354        struct work_struct dynamic_ps_enable_work;
1355        struct work_struct dynamic_ps_disable_work;
1356        struct timer_list dynamic_ps_timer;
1357        struct notifier_block ifa_notifier;
1358        struct notifier_block ifa6_notifier;
1359
1360        /*
1361         * The dynamic ps timeout configured from user space via WEXT -
1362         * this will override whatever chosen by mac80211 internally.
1363         */
1364        int dynamic_ps_forced_timeout;
1365
1366        int user_power_level; /* in dBm, for all interfaces */
1367
1368        enum ieee80211_smps_mode smps_mode;
1369
1370        struct work_struct restart_work;
1371
1372#ifdef CONFIG_MAC80211_DEBUGFS
1373        struct local_debugfsdentries {
1374                struct dentry *rcdir;
1375                struct dentry *keys;
1376        } debugfs;
1377#endif
1378
1379        /*
1380         * Remain-on-channel support
1381         */
1382        struct delayed_work roc_work;
1383        struct list_head roc_list;
1384        struct work_struct hw_roc_start, hw_roc_done;
1385        unsigned long hw_roc_start_time;
1386        u64 roc_cookie_counter;
1387
1388        struct idr ack_status_frames;
1389        spinlock_t ack_status_lock;
1390
1391        struct ieee80211_sub_if_data __rcu *p2p_sdata;
1392
1393        /* virtual monitor interface */
1394        struct ieee80211_sub_if_data __rcu *monitor_sdata;
1395        struct cfg80211_chan_def monitor_chandef;
1396
1397        /* extended capabilities provided by mac80211 */
1398        u8 ext_capa[8];
1399
1400        /* TDLS channel switch */
1401        struct work_struct tdls_chsw_work;
1402        struct sk_buff_head skb_queue_tdls_chsw;
1403};
1404
1405static inline struct ieee80211_sub_if_data *
1406IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1407{
1408        return netdev_priv(dev);
1409}
1410
1411static inline struct ieee80211_sub_if_data *
1412IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1413{
1414        return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1415}
1416
1417/* this struct represents 802.11n's RA/TID combination */
1418struct ieee80211_ra_tid {
1419        u8 ra[ETH_ALEN];
1420        u16 tid;
1421};
1422
1423/* this struct holds the value parsing from channel switch IE  */
1424struct ieee80211_csa_ie {
1425        struct cfg80211_chan_def chandef;
1426        u8 mode;
1427        u8 count;
1428        u8 ttl;
1429        u16 pre_value;
1430};
1431
1432/* Parsed Information Elements */
1433struct ieee802_11_elems {
1434        const u8 *ie_start;
1435        size_t total_len;
1436
1437        /* pointers to IEs */
1438        const struct ieee80211_tdls_lnkie *lnk_id;
1439        const struct ieee80211_ch_switch_timing *ch_sw_timing;
1440        const u8 *ext_capab;
1441        const u8 *ssid;
1442        const u8 *supp_rates;
1443        const u8 *ds_params;
1444        const struct ieee80211_tim_ie *tim;
1445        const u8 *challenge;
1446        const u8 *rsn;
1447        const u8 *erp_info;
1448        const u8 *ext_supp_rates;
1449        const u8 *wmm_info;
1450        const u8 *wmm_param;
1451        const struct ieee80211_ht_cap *ht_cap_elem;
1452        const struct ieee80211_ht_operation *ht_operation;
1453        const struct ieee80211_vht_cap *vht_cap_elem;
1454        const struct ieee80211_vht_operation *vht_operation;
1455        const struct ieee80211_meshconf_ie *mesh_config;
1456        const u8 *mesh_id;
1457        const u8 *peering;
1458        const __le16 *awake_window;
1459        const u8 *preq;
1460        const u8 *prep;
1461        const u8 *perr;
1462        const struct ieee80211_rann_ie *rann;
1463        const struct ieee80211_channel_sw_ie *ch_switch_ie;
1464        const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1465        const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1466        const u8 *country_elem;
1467        const u8 *pwr_constr_elem;
1468        const u8 *cisco_dtpc_elem;
1469        const struct ieee80211_timeout_interval_ie *timeout_int;
1470        const u8 *opmode_notif;
1471        const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1472        const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1473
1474        /* length of them, respectively */
1475        u8 ext_capab_len;
1476        u8 ssid_len;
1477        u8 supp_rates_len;
1478        u8 tim_len;
1479        u8 challenge_len;
1480        u8 rsn_len;
1481        u8 ext_supp_rates_len;
1482        u8 wmm_info_len;
1483        u8 wmm_param_len;
1484        u8 mesh_id_len;
1485        u8 peering_len;
1486        u8 preq_len;
1487        u8 prep_len;
1488        u8 perr_len;
1489        u8 country_elem_len;
1490
1491        /* whether a parse error occurred while retrieving these elements */
1492        bool parse_error;
1493};
1494
1495static inline struct ieee80211_local *hw_to_local(
1496        struct ieee80211_hw *hw)
1497{
1498        return container_of(hw, struct ieee80211_local, hw);
1499}
1500
1501static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1502{
1503        return container_of(txq, struct txq_info, txq);
1504}
1505
1506static inline bool txq_has_queue(struct ieee80211_txq *txq)
1507{
1508        struct txq_info *txqi = to_txq_info(txq);
1509
1510        return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1511}
1512
1513static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1514{
1515        return ether_addr_equal(raddr, addr) ||
1516               is_broadcast_ether_addr(raddr);
1517}
1518
1519static inline bool
1520ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1521{
1522        WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1523                     status->flag & RX_FLAG_MACTIME_END);
1524        if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1525                return true;
1526        /* can't handle HT/VHT preamble yet */
1527        if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1528            !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT)))
1529                return true;
1530        return false;
1531}
1532
1533void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1534void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1535
1536/* This function returns the number of multicast stations connected to this
1537 * interface. It returns -1 if that number is not tracked, that is for netdevs
1538 * not in AP or AP_VLAN mode or when using 4addr.
1539 */
1540static inline int
1541ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1542{
1543        if (sdata->vif.type == NL80211_IFTYPE_AP)
1544                return atomic_read(&sdata->u.ap.num_mcast_sta);
1545        if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1546                return atomic_read(&sdata->u.vlan.num_mcast_sta);
1547        return -1;
1548}
1549
1550u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1551                                     struct ieee80211_rx_status *status,
1552                                     unsigned int mpdu_len,
1553                                     unsigned int mpdu_offset);
1554int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1555void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1556void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1557                                      u32 changed);
1558void ieee80211_configure_filter(struct ieee80211_local *local);
1559u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1560
1561u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1562int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1563                             u64 *cookie, gfp_t gfp);
1564
1565void ieee80211_check_fast_rx(struct sta_info *sta);
1566void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1567void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1568void ieee80211_clear_fast_rx(struct sta_info *sta);
1569
1570/* STA code */
1571void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1572int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1573                       struct cfg80211_auth_request *req);
1574int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1575                        struct cfg80211_assoc_request *req);
1576int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1577                         struct cfg80211_deauth_request *req);
1578int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1579                           struct cfg80211_disassoc_request *req);
1580void ieee80211_send_pspoll(struct ieee80211_local *local,
1581                           struct ieee80211_sub_if_data *sdata);
1582void ieee80211_recalc_ps(struct ieee80211_local *local);
1583void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1584int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1585void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1586void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1587                                  struct sk_buff *skb);
1588void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1589void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1590void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1591void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1592                                  __le16 fc, bool acked);
1593void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1594void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1595void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1596
1597/* IBSS code */
1598void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1599void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1600void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1601                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1602int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1603                        struct cfg80211_ibss_params *params);
1604int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1605void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1606void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1607                                   struct sk_buff *skb);
1608int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1609                              struct cfg80211_csa_settings *csa_settings);
1610int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1611void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1612
1613/* OCB code */
1614void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1615void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1616                             const u8 *bssid, const u8 *addr, u32 supp_rates);
1617void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1618int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1619                       struct ocb_setup *setup);
1620int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1621
1622/* mesh code */
1623void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1624void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1625                                   struct sk_buff *skb);
1626int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1627                              struct cfg80211_csa_settings *csa_settings);
1628int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1629
1630/* scan/BSS handling */
1631void ieee80211_scan_work(struct work_struct *work);
1632int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1633                                const u8 *ssid, u8 ssid_len,
1634                                struct ieee80211_channel **channels,
1635                                unsigned int n_channels,
1636                                enum nl80211_bss_scan_width scan_width);
1637int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1638                           struct cfg80211_scan_request *req);
1639void ieee80211_scan_cancel(struct ieee80211_local *local);
1640void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1641void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1642
1643void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1644struct ieee80211_bss *
1645ieee80211_bss_info_update(struct ieee80211_local *local,
1646                          struct ieee80211_rx_status *rx_status,
1647                          struct ieee80211_mgmt *mgmt,
1648                          size_t len,
1649                          struct ieee802_11_elems *elems,
1650                          struct ieee80211_channel *channel);
1651void ieee80211_rx_bss_put(struct ieee80211_local *local,
1652                          struct ieee80211_bss *bss);
1653
1654/* scheduled scan handling */
1655int
1656__ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1657                                     struct cfg80211_sched_scan_request *req);
1658int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1659                                       struct cfg80211_sched_scan_request *req);
1660int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1661void ieee80211_sched_scan_end(struct ieee80211_local *local);
1662void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1663
1664/* off-channel/mgmt-tx */
1665void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1666void ieee80211_offchannel_return(struct ieee80211_local *local);
1667void ieee80211_roc_setup(struct ieee80211_local *local);
1668void ieee80211_start_next_roc(struct ieee80211_local *local);
1669void ieee80211_roc_purge(struct ieee80211_local *local,
1670                         struct ieee80211_sub_if_data *sdata);
1671int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1672                                struct ieee80211_channel *chan,
1673                                unsigned int duration, u64 *cookie);
1674int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1675                                       struct wireless_dev *wdev, u64 cookie);
1676int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1677                      struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1678int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1679                                  struct wireless_dev *wdev, u64 cookie);
1680
1681/* channel switch handling */
1682void ieee80211_csa_finalize_work(struct work_struct *work);
1683int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1684                             struct cfg80211_csa_settings *params);
1685
1686/* interface handling */
1687int ieee80211_iface_init(void);
1688void ieee80211_iface_exit(void);
1689int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1690                     unsigned char name_assign_type,
1691                     struct wireless_dev **new_wdev, enum nl80211_iftype type,
1692                     struct vif_params *params);
1693int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1694                             enum nl80211_iftype type);
1695void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1696void ieee80211_remove_interfaces(struct ieee80211_local *local);
1697u32 ieee80211_idle_off(struct ieee80211_local *local);
1698void ieee80211_recalc_idle(struct ieee80211_local *local);
1699void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1700                                    const int offset);
1701int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1702void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1703int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1704void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1705
1706bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1707void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1708                              bool update_bss);
1709
1710static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1711{
1712        return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1713}
1714
1715/* tx handling */
1716void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1717void ieee80211_tx_pending(unsigned long data);
1718netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1719                                         struct net_device *dev);
1720netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1721                                       struct net_device *dev);
1722void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1723                                  struct net_device *dev,
1724                                  u32 info_flags);
1725void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1726                              struct sk_buff_head *skbs);
1727struct sk_buff *
1728ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1729                              struct sk_buff *skb, u32 info_flags);
1730void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1731                          struct ieee80211_supported_band *sband,
1732                          int retry_count, int shift, bool send_to_cooked);
1733
1734void ieee80211_check_fast_xmit(struct sta_info *sta);
1735void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1736void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1737void ieee80211_clear_fast_xmit(struct sta_info *sta);
1738
1739/* HT */
1740void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1741                                     struct ieee80211_sta_ht_cap *ht_cap);
1742bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1743                                       struct ieee80211_supported_band *sband,
1744                                       const struct ieee80211_ht_cap *ht_cap_ie,
1745                                       struct sta_info *sta);
1746void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1747                          const u8 *da, u16 tid,
1748                          u16 initiator, u16 reason_code);
1749int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1750                               enum ieee80211_smps_mode smps, const u8 *da,
1751                               const u8 *bssid);
1752void ieee80211_request_smps_ap_work(struct work_struct *work);
1753void ieee80211_request_smps_mgd_work(struct work_struct *work);
1754bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1755                                   enum ieee80211_smps_mode smps_mode_new);
1756
1757void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1758                                     u16 initiator, u16 reason, bool stop);
1759void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1760                                    u16 initiator, u16 reason, bool stop);
1761void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1762                                     u8 dialog_token, u16 timeout,
1763                                     u16 start_seq_num, u16 ba_policy, u16 tid,
1764                                     u16 buf_size, bool tx, bool auto_seq);
1765void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1766                                         enum ieee80211_agg_stop_reason reason);
1767void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1768                             struct sta_info *sta,
1769                             struct ieee80211_mgmt *mgmt, size_t len);
1770void ieee80211_process_addba_resp(struct ieee80211_local *local,
1771                                  struct sta_info *sta,
1772                                  struct ieee80211_mgmt *mgmt,
1773                                  size_t len);
1774void ieee80211_process_addba_request(struct ieee80211_local *local,
1775                                     struct sta_info *sta,
1776                                     struct ieee80211_mgmt *mgmt,
1777                                     size_t len);
1778
1779int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1780                                   enum ieee80211_agg_stop_reason reason);
1781int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1782                                    enum ieee80211_agg_stop_reason reason);
1783void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1784void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1785void ieee80211_ba_session_work(struct work_struct *work);
1786void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1787void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1788
1789u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1790
1791/* VHT */
1792void
1793ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1794                                    struct ieee80211_supported_band *sband,
1795                                    const struct ieee80211_vht_cap *vht_cap_ie,
1796                                    struct sta_info *sta);
1797enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1798enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1799void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1800enum ieee80211_sta_rx_bandwidth
1801ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1802enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1803void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1804void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1805                                 struct ieee80211_mgmt *mgmt);
1806u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1807                                  struct sta_info *sta, u8 opmode,
1808                                  enum nl80211_band band);
1809void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1810                                 struct sta_info *sta, u8 opmode,
1811                                 enum nl80211_band band);
1812void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1813                                      struct ieee80211_sta_vht_cap *vht_cap);
1814void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1815                                     u16 vht_mask[NL80211_VHT_NSS_MAX]);
1816
1817/* Spectrum management */
1818void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1819                                       struct ieee80211_mgmt *mgmt,
1820                                       size_t len);
1821/**
1822 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1823 * @sdata: the sdata of the interface which has received the frame
1824 * @elems: parsed 802.11 elements received with the frame
1825 * @current_band: indicates the current band
1826 * @sta_flags: contains information about own capabilities and restrictions
1827 *      to decide which channel switch announcements can be accepted. Only the
1828 *      following subset of &enum ieee80211_sta_flags are evaluated:
1829 *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1830 *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1831 *      %IEEE80211_STA_DISABLE_160MHZ.
1832 * @bssid: the currently connected bssid (for reporting)
1833 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1834        All of them will be filled with if success only.
1835 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1836 */
1837int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1838                                 struct ieee802_11_elems *elems,
1839                                 enum nl80211_band current_band,
1840                                 u32 sta_flags, u8 *bssid,
1841                                 struct ieee80211_csa_ie *csa_ie);
1842
1843/* Suspend/resume and hw reconfiguration */
1844int ieee80211_reconfig(struct ieee80211_local *local);
1845void ieee80211_stop_device(struct ieee80211_local *local);
1846
1847int __ieee80211_suspend(struct ieee80211_hw *hw,
1848                        struct cfg80211_wowlan *wowlan);
1849
1850static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1851{
1852        struct ieee80211_local *local = hw_to_local(hw);
1853
1854        WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1855             !test_bit(SCAN_COMPLETED, &local->scanning),
1856                "%s: resume with hardware scan still in progress\n",
1857                wiphy_name(hw->wiphy));
1858
1859        return ieee80211_reconfig(hw_to_local(hw));
1860}
1861
1862/* utility functions/constants */
1863extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1864int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1865                             int rate, int erp, int short_preamble,
1866                             int shift);
1867void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1868                               bool bss_notify, bool enable_qos);
1869void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1870                    struct sta_info *sta, struct sk_buff *skb);
1871
1872void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1873                                 struct sk_buff *skb, int tid,
1874                                 enum nl80211_band band);
1875
1876static inline void
1877ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1878                          struct sk_buff *skb, int tid,
1879                          enum nl80211_band band)
1880{
1881        rcu_read_lock();
1882        __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1883        rcu_read_unlock();
1884}
1885
1886static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1887                                        struct sk_buff *skb, int tid)
1888{
1889        struct ieee80211_chanctx_conf *chanctx_conf;
1890
1891        rcu_read_lock();
1892        chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1893        if (WARN_ON(!chanctx_conf)) {
1894                rcu_read_unlock();
1895                kfree_skb(skb);
1896                return;
1897        }
1898
1899        __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1900                                    chanctx_conf->def.chan->band);
1901        rcu_read_unlock();
1902}
1903
1904static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1905                                    struct sk_buff *skb)
1906{
1907        /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1908        ieee80211_tx_skb_tid(sdata, skb, 7);
1909}
1910
1911u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1912                               struct ieee802_11_elems *elems,
1913                               u64 filter, u32 crc);
1914static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1915                                          bool action,
1916                                          struct ieee802_11_elems *elems)
1917{
1918        ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1919}
1920
1921
1922extern const int ieee802_1d_to_ac[8];
1923
1924static inline int ieee80211_ac_from_tid(int tid)
1925{
1926        return ieee802_1d_to_ac[tid & 7];
1927}
1928
1929void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1930void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1931void ieee80211_dynamic_ps_timer(unsigned long data);
1932void ieee80211_send_nullfunc(struct ieee80211_local *local,
1933                             struct ieee80211_sub_if_data *sdata,
1934                             bool powersave);
1935void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1936                             struct ieee80211_hdr *hdr);
1937void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1938                             struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1939
1940void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1941                                     unsigned long queues,
1942                                     enum queue_stop_reason reason,
1943                                     bool refcounted);
1944void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1945                               struct ieee80211_sub_if_data *sdata,
1946                               enum queue_stop_reason reason);
1947void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1948                               struct ieee80211_sub_if_data *sdata,
1949                               enum queue_stop_reason reason);
1950void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1951                                     unsigned long queues,
1952                                     enum queue_stop_reason reason,
1953                                     bool refcounted);
1954void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1955                                    enum queue_stop_reason reason,
1956                                    bool refcounted);
1957void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1958                                    enum queue_stop_reason reason,
1959                                    bool refcounted);
1960void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1961void ieee80211_add_pending_skb(struct ieee80211_local *local,
1962                               struct sk_buff *skb);
1963void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1964                                struct sk_buff_head *skbs);
1965void ieee80211_flush_queues(struct ieee80211_local *local,
1966                            struct ieee80211_sub_if_data *sdata, bool drop);
1967void __ieee80211_flush_queues(struct ieee80211_local *local,
1968                              struct ieee80211_sub_if_data *sdata,
1969                              unsigned int queues, bool drop);
1970
1971static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1972{
1973        /*
1974         * If quiescing is set, we are racing with __ieee80211_suspend.
1975         * __ieee80211_suspend flushes the workers after setting quiescing,
1976         * and we check quiescing / suspended before enqueing new workers.
1977         * We should abort the worker to avoid the races below.
1978         */
1979        if (local->quiescing)
1980                return false;
1981
1982        /*
1983         * We might already be suspended if the following scenario occurs:
1984         * __ieee80211_suspend          Control path
1985         *
1986         *                              if (local->quiescing)
1987         *                                      return;
1988         * local->quiescing = true;
1989         * flush_workqueue();
1990         *                              queue_work(...);
1991         * local->suspended = true;
1992         * local->quiescing = false;
1993         *                              worker starts running...
1994         */
1995        if (local->suspended)
1996                return false;
1997
1998        return true;
1999}
2000
2001int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2002void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2003void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2004                        struct sta_info *sta,
2005                        struct txq_info *txq, int tid);
2006void ieee80211_txq_purge(struct ieee80211_local *local,
2007                         struct txq_info *txqi);
2008void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2009                         u16 transaction, u16 auth_alg, u16 status,
2010                         const u8 *extra, size_t extra_len, const u8 *bssid,
2011                         const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2012                         u32 tx_flags);
2013void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2014                                    const u8 *bssid, u16 stype, u16 reason,
2015                                    bool send_frame, u8 *frame_buf);
2016int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2017                             size_t buffer_len,
2018                             struct ieee80211_scan_ies *ie_desc,
2019                             const u8 *ie, size_t ie_len,
2020                             u8 bands_used, u32 *rate_masks,
2021                             struct cfg80211_chan_def *chandef);
2022struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2023                                          const u8 *src, const u8 *dst,
2024                                          u32 ratemask,
2025                                          struct ieee80211_channel *chan,
2026                                          const u8 *ssid, size_t ssid_len,
2027                                          const u8 *ie, size_t ie_len,
2028                                          bool directed);
2029void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
2030                              const u8 *src, const u8 *dst,
2031                              const u8 *ssid, size_t ssid_len,
2032                              const u8 *ie, size_t ie_len,
2033                              u32 ratemask, bool directed, u32 tx_flags,
2034                              struct ieee80211_channel *channel, bool scan);
2035
2036u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2037                            struct ieee802_11_elems *elems,
2038                            enum nl80211_band band, u32 *basic_rates);
2039int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2040                                 enum ieee80211_smps_mode smps_mode);
2041int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2042                                enum ieee80211_smps_mode smps_mode);
2043void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2044void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2045
2046size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2047u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2048                              u16 cap);
2049u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2050                               const struct cfg80211_chan_def *chandef,
2051                               u16 prot_mode, bool rifs_mode);
2052u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2053                               u32 cap);
2054u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2055                                const struct cfg80211_chan_def *chandef);
2056int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2057                             const struct ieee80211_supported_band *sband,
2058                             const u8 *srates, int srates_len, u32 *rates);
2059int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2060                            struct sk_buff *skb, bool need_basic,
2061                            enum nl80211_band band);
2062int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2063                                struct sk_buff *skb, bool need_basic,
2064                                enum nl80211_band band);
2065u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2066
2067/* channel management */
2068bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2069                               struct cfg80211_chan_def *chandef);
2070bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2071                                struct cfg80211_chan_def *chandef);
2072u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2073
2074int __must_check
2075ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2076                          const struct cfg80211_chan_def *chandef,
2077                          enum ieee80211_chanctx_mode mode);
2078int __must_check
2079ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2080                              const struct cfg80211_chan_def *chandef,
2081                              enum ieee80211_chanctx_mode mode,
2082                              bool radar_required);
2083int __must_check
2084ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2085int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2086
2087int __must_check
2088ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2089                               const struct cfg80211_chan_def *chandef,
2090                               u32 *changed);
2091void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2092void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2093void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2094                                         bool clear);
2095int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2096                               struct ieee80211_chanctx *ctx);
2097
2098void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2099                                   struct ieee80211_chanctx *chanctx);
2100void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2101                                      struct ieee80211_chanctx *ctx);
2102bool ieee80211_is_radar_required(struct ieee80211_local *local);
2103
2104void ieee80211_dfs_cac_timer(unsigned long data);
2105void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2106void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2107void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2108int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2109                              struct cfg80211_csa_settings *csa_settings);
2110
2111bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2112bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2113const struct ieee80211_cipher_scheme *
2114ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2115                 enum nl80211_iftype iftype);
2116int ieee80211_cs_headroom(struct ieee80211_local *local,
2117                          struct cfg80211_crypto_settings *crypto,
2118                          enum nl80211_iftype iftype);
2119void ieee80211_recalc_dtim(struct ieee80211_local *local,
2120                           struct ieee80211_sub_if_data *sdata);
2121int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2122                                 const struct cfg80211_chan_def *chandef,
2123                                 enum ieee80211_chanctx_mode chanmode,
2124                                 u8 radar_detect);
2125int ieee80211_max_num_channels(struct ieee80211_local *local);
2126enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2127void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2128                                       struct ieee80211_chanctx *ctx);
2129
2130/* TDLS */
2131int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2132                        const u8 *peer, u8 action_code, u8 dialog_token,
2133                        u16 status_code, u32 peer_capability,
2134                        bool initiator, const u8 *extra_ies,
2135                        size_t extra_ies_len);
2136int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2137                        const u8 *peer, enum nl80211_tdls_operation oper);
2138void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2139int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2140                                  const u8 *addr, u8 oper_class,
2141                                  struct cfg80211_chan_def *chandef);
2142void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2143                                          struct net_device *dev,
2144                                          const u8 *addr);
2145void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2146void ieee80211_tdls_chsw_work(struct work_struct *wk);
2147
2148extern const struct ethtool_ops ieee80211_ethtool_ops;
2149
2150#ifdef CONFIG_MAC80211_NOINLINE
2151#define debug_noinline noinline
2152#else
2153#define debug_noinline
2154#endif
2155
2156#endif /* IEEE80211_I_H */
2157