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 <net/ieee80211_radiotap.h>
  30 #include <net/cfg80211.h>
  31 #include <net/mac80211.h>
  32 #include "key.h"
  33 #include "sta_info.h"
  34 #include "debug.h"
  35
  36 struct ieee80211_local;
  37
  38 /* Maximum number of broadcast/multicast frames to buffer when some of the
  39  * associated stations are using power saving. */
  40 #define AP_MAX_BC_BUFFER 128
  41
  42 /* Maximum number of frames buffered to all STAs, including multicast frames.
  43  * Note: increasing this limit increases the potential memory requirement. Each
  44  * frame can be up to about 2 kB long. */
  45 #define TOTAL_MAX_TX_BUFFER 512
  46
  47 /* Required encryption head and tailroom */
  48 #define IEEE80211_ENCRYPT_HEADROOM 8
  49 #define IEEE80211_ENCRYPT_TAILROOM 18
  50
  51 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  52  * reception of at least three fragmented frames. This limit can be increased
  53  * by changing this define, at the cost of slower frame reassembly and
  54  * increased memory use (about 2 kB of RAM per entry). */
  55 #define IEEE80211_FRAGMENT_MAX 4
  56
  57 /* power level hasn't been configured (or set to automatic) */
  58 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  59
  60 /*
  61  * Some APs experience problems when working with U-APSD. Decrease the
  62  * probability of that happening by using legacy mode for all ACs but VO.
  63  * The AP that caused us trouble was a Cisco 4410N. It ignores our
  64  * setting, and always treats non-VO ACs as legacy.
  65  */
  66 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  67         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  68
  69 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  70         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  71
  72 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  73
  74 struct ieee80211_fragment_entry {
  75         unsigned long first_frag_time;
  76         unsigned int seq;
  77         unsigned int rx_queue;
  78         unsigned int last_frag;
  79         unsigned int extra_len;
  80         struct sk_buff_head skb_list;
  81         int ccmp; /* Whether fragments were encrypted with CCMP */
  82         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  83 };
  84
  85
  86 struct ieee80211_bss {
  87         u32 device_ts_beacon, device_ts_presp;
  88
  89         bool wmm_used;
  90         bool uapsd_supported;
  91
  92 #define IEEE80211_MAX_SUPP_RATES 32
  93         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  94         size_t supp_rates_len;
  95         struct ieee80211_rate *beacon_rate;
  96
  97         /*
  98          * During association, we save an ERP value from a probe response so
  99          * that we can feed ERP info to the driver when handling the
 100          * association completes. these fields probably won't be up-to-date
 101          * otherwise, you probably don't want to use them.
 102          */
 103         bool has_erp_value;
 104         u8 erp_value;
 105
 106         /* Keep track of the corruption of the last beacon/probe response. */
 107         u8 corrupt_data;
 108
 109         /* Keep track of what bits of information we have valid info for. */
 110         u8 valid_data;
 111 };
 112
 113 /**
 114  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 115  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 116  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 117  *
 118  * These are bss flags that are attached to a bss in the
 119  * @corrupt_data field of &struct ieee80211_bss.
 120  */
 121 enum ieee80211_bss_corrupt_data_flags {
 122         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 123         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 124 };
 125
 126 /**
 127  * enum ieee80211_valid_data_flags - BSS valid data flags
 128  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 129  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 130  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 131  *
 132  * These are bss flags that are attached to a bss in the
 133  * @valid_data field of &struct ieee80211_bss.  They show which parts
 134  * of the data structure were received as a result of an un-corrupted
 135  * beacon/probe response.
 136  */
 137 enum ieee80211_bss_valid_data_flags {
 138         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 139         IEEE80211_BSS_VALID_RATES               = BIT(2),
 140         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 141 };
 142
 143 typedef unsigned __bitwise__ ieee80211_tx_result;
 144 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 145 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 146 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 147
 148 #define IEEE80211_TX_UNICAST            BIT(1)
 149 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 150
 151 struct ieee80211_tx_data {
 152         struct sk_buff *skb;
 153         struct sk_buff_head skbs;
 154         struct ieee80211_local *local;
 155         struct ieee80211_sub_if_data *sdata;
 156         struct sta_info *sta;
 157         struct ieee80211_key *key;
 158         struct ieee80211_tx_rate rate;
 159
 160         unsigned int flags;
 161 };
 162
 163
 164 typedef unsigned __bitwise__ ieee80211_rx_result;
 165 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 166 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 167 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 168 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 169
 170 /**
 171  * enum ieee80211_packet_rx_flags - packet RX flags
 172  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 173  *      (incl. multicast frames)
 174  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 175  * @IEEE80211_RX_AMSDU: a-MSDU packet
 176  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 177  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 178  *
 179  * These are per-frame flags that are attached to a frame in the
 180  * @rx_flags field of &struct ieee80211_rx_status.
 181  */
 182 enum ieee80211_packet_rx_flags {
 183         IEEE80211_RX_RA_MATCH                   = BIT(1),
 184         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 185         IEEE80211_RX_AMSDU                      = BIT(3),
 186         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 187         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 188 };
 189
 190 /**
 191  * enum ieee80211_rx_flags - RX data flags
 192  *
 193  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 194  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 195  *      to cfg80211_report_obss_beacon().
 196  *
 197  * These flags are used across handling multiple interfaces
 198  * for a single frame.
 199  */
 200 enum ieee80211_rx_flags {
 201         IEEE80211_RX_CMNTR              = BIT(0),
 202         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 203 };
 204
 205 struct ieee80211_rx_data {
 206         struct sk_buff *skb;
 207         struct ieee80211_local *local;
 208         struct ieee80211_sub_if_data *sdata;
 209         struct sta_info *sta;
 210         struct ieee80211_key *key;
 211
 212         unsigned int flags;
 213
 214         /*
 215          * Index into sequence numbers array, 0..16
 216          * since the last (16) is used for non-QoS,
 217          * will be 16 on non-QoS frames.
 218          */
 219         int seqno_idx;
 220
 221         /*
 222          * Index into the security IV/PN arrays, 0..16
 223          * since the last (16) is used for CCMP-encrypted
 224          * management frames, will be set to 16 on mgmt
 225          * frames and 0 on non-QoS frames.
 226          */
 227         int security_idx;
 228
 229         u32 tkip_iv32;
 230         u16 tkip_iv16;
 231 };
 232
 233 struct ieee80211_csa_settings {
 234         const u16 *counter_offsets_beacon;
 235         const u16 *counter_offsets_presp;
 236
 237         int n_counter_offsets_beacon;
 238         int n_counter_offsets_presp;
 239
 240         u8 count;
 241 };
 242
 243 struct beacon_data {
 244         u8 *head, *tail;
 245         int head_len, tail_len;
 246         struct ieee80211_meshconf_ie *meshconf;
 247         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 248         u8 csa_current_counter;
 249         struct rcu_head rcu_head;
 250 };
 251
 252 struct probe_resp {
 253         struct rcu_head rcu_head;
 254         int len;
 255         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 256         u8 data[0];
 257 };
 258
 259 struct ps_data {
 260         /* yes, this looks ugly, but guarantees that we can later use
 261          * bitmap_empty :)
 262          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 263         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 264                         __aligned(__alignof__(unsigned long));
 265         struct sk_buff_head bc_buf;
 266         atomic_t num_sta_ps; /* number of stations in PS mode */
 267         int dtim_count;
 268         bool dtim_bc_mc;
 269 };
 270
 271 struct ieee80211_if_ap {
 272         struct beacon_data __rcu *beacon;
 273         struct probe_resp __rcu *probe_resp;
 274
 275         /* to be used after channel switch. */
 276         struct cfg80211_beacon_data *next_beacon;
 277         struct list_head vlans; /* write-protected with RTNL and local->mtx */
 278
 279         struct ps_data ps;
 280         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 281         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 282                          driver_smps_mode; /* smps mode request */
 283
 284         struct work_struct request_smps_work;
 285 };
 286
 287 struct ieee80211_if_wds {
 288         struct sta_info *sta;
 289         u8 remote_addr[ETH_ALEN];
 290 };
 291
 292 struct ieee80211_if_vlan {
 293         struct list_head list; /* write-protected with RTNL and local->mtx */
 294
 295         /* used for all tx if the VLAN is configured to 4-addr mode */
 296         struct sta_info __rcu *sta;
 297 };
 298
 299 struct mesh_stats {
 300         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 301         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 302         __u32 fwded_frames;             /* Mesh total forwarded frames */
 303         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 304         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 305         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 306 };
 307
 308 #define PREQ_Q_F_START          0x1
 309 #define PREQ_Q_F_REFRESH        0x2
 310 struct mesh_preq_queue {
 311         struct list_head list;
 312         u8 dst[ETH_ALEN];
 313         u8 flags;
 314 };
 315
 316 #if HZ/100 == 0
 317 #define IEEE80211_ROC_MIN_LEFT  1
 318 #else
 319 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 320 #endif
 321
 322 struct ieee80211_roc_work {
 323         struct list_head list;
 324         struct list_head dependents;
 325
 326         struct delayed_work work;
 327
 328         struct ieee80211_sub_if_data *sdata;
 329
 330         struct ieee80211_channel *chan;
 331
 332         bool started, abort, hw_begun, notified;
 333         bool to_be_freed;
 334         bool on_channel;
 335
 336         unsigned long hw_start_time;
 337
 338         u32 duration, req_duration;
 339         struct sk_buff *frame;
 340         u64 cookie, mgmt_tx_cookie;
 341         enum ieee80211_roc_type type;
 342 };
 343
 344 /* flags used in struct ieee80211_if_managed.flags */
 345 enum ieee80211_sta_flags {
 346         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 347         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 348         IEEE80211_STA_DISABLE_HT        = BIT(4),
 349         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 350         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 351         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 352         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 353         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 354         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 355         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 356         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 357         IEEE80211_STA_DISABLE_WMM       = BIT(14),
 358         IEEE80211_STA_ENABLE_RRM        = BIT(15),
 359 };
 360
 361 struct ieee80211_mgd_auth_data {
 362         struct cfg80211_bss *bss;
 363         unsigned long timeout;
 364         int tries;
 365         u16 algorithm, expected_transaction;
 366
 367         u8 key[WLAN_KEY_LEN_WEP104];
 368         u8 key_len, key_idx;
 369         bool done;
 370         bool timeout_started;
 371
 372         u16 sae_trans, sae_status;
 373         size_t data_len;
 374         u8 data[];
 375 };
 376
 377 struct ieee80211_mgd_assoc_data {
 378         struct cfg80211_bss *bss;
 379         const u8 *supp_rates;
 380
 381         unsigned long timeout;
 382         int tries;
 383
 384         u16 capability;
 385         u8 prev_bssid[ETH_ALEN];
 386         u8 ssid[IEEE80211_MAX_SSID_LEN];
 387         u8 ssid_len;
 388         u8 supp_rates_len;
 389         bool wmm, uapsd;
 390         bool need_beacon;
 391         bool synced;
 392         bool timeout_started;
 393
 394         u8 ap_ht_param;
 395
 396         struct ieee80211_vht_cap ap_vht_cap;
 397
 398         size_t ie_len;
 399         u8 ie[];
 400 };
 401
 402 struct ieee80211_sta_tx_tspec {
 403         /* timestamp of the first packet in the time slice */
 404         unsigned long time_slice_start;
 405
 406         u32 admitted_time; /* in usecs, unlike over the air */
 407         u8 tsid;
 408         s8 up; /* signed to be able to invalidate with -1 during teardown */
 409
 410         /* consumed TX time in microseconds in the time slice */
 411         u32 consumed_tx_time;
 412         enum {
 413                 TX_TSPEC_ACTION_NONE = 0,
 414                 TX_TSPEC_ACTION_DOWNGRADE,
 415                 TX_TSPEC_ACTION_STOP_DOWNGRADE,
 416         } action;
 417         bool downgraded;
 418 };
 419
 420 struct ieee80211_if_managed {
 421         struct timer_list timer;
 422         struct timer_list conn_mon_timer;
 423         struct timer_list bcn_mon_timer;
 424         struct timer_list chswitch_timer;
 425         struct work_struct monitor_work;
 426         struct work_struct chswitch_work;
 427         struct work_struct beacon_connection_loss_work;
 428         struct work_struct csa_connection_drop_work;
 429
 430         unsigned long beacon_timeout;
 431         unsigned long probe_timeout;
 432         int probe_send_count;
 433         bool nullfunc_failed;
 434         bool connection_loss;
 435
 436         struct cfg80211_bss *associated;
 437         struct ieee80211_mgd_auth_data *auth_data;
 438         struct ieee80211_mgd_assoc_data *assoc_data;
 439
 440         u8 bssid[ETH_ALEN];
 441
 442         u16 aid;
 443
 444         bool powersave; /* powersave requested for this iface */
 445         bool broken_ap; /* AP is broken -- turn off powersave */
 446         bool have_beacon;
 447         u8 dtim_period;
 448         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 449                                  driver_smps_mode; /* smps mode request */
 450
 451         struct work_struct request_smps_work;
 452
 453         unsigned int flags;
 454
 455         bool csa_waiting_bcn;
 456
 457         bool beacon_crc_valid;
 458         u32 beacon_crc;
 459
 460         bool status_acked;
 461         bool status_received;
 462         __le16 status_fc;
 463
 464         enum {
 465                 IEEE80211_MFP_DISABLED,
 466                 IEEE80211_MFP_OPTIONAL,
 467                 IEEE80211_MFP_REQUIRED
 468         } mfp; /* management frame protection */
 469
 470         /*
 471          * Bitmask of enabled u-apsd queues,
 472          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 473          * to take effect.
 474          */
 475         unsigned int uapsd_queues;
 476
 477         /*
 478          * Maximum number of buffered frames AP can deliver during a
 479          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 480          * Needs a new association to take effect.
 481          */
 482         unsigned int uapsd_max_sp_len;
 483
 484         int wmm_last_param_set;
 485
 486         u8 use_4addr;
 487
 488         s16 p2p_noa_index;
 489
 490         /* Signal strength from the last Beacon frame in the current BSS. */
 491         int last_beacon_signal;
 492
 493         /*
 494          * Weighted average of the signal strength from Beacon frames in the
 495          * current BSS. This is in units of 1/16 of the signal unit to maintain
 496          * accuracy and to speed up calculations, i.e., the value need to be
 497          * divided by 16 to get the actual value.
 498          */
 499         int ave_beacon_signal;
 500
 501         /*
 502          * Number of Beacon frames used in ave_beacon_signal. This can be used
 503          * to avoid generating less reliable cqm events that would be based
 504          * only on couple of received frames.
 505          */
 506         unsigned int count_beacon_signal;
 507
 508         /*
 509          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 510          * that triggered a cqm event. 0 indicates that no event has been
 511          * generated for the current association.
 512          */
 513         int last_cqm_event_signal;
 514
 515         /*
 516          * State variables for keeping track of RSSI of the AP currently
 517          * connected to and informing driver when RSSI has gone
 518          * below/above a certain threshold.
 519          */
 520         int rssi_min_thold, rssi_max_thold;
 521         int last_ave_beacon_signal;
 522
 523         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 524         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 525         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 526         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 527
 528         /* TDLS support */
 529         u8 tdls_peer[ETH_ALEN] __aligned(2);
 530         struct delayed_work tdls_peer_del_work;
 531         struct sk_buff *orig_teardown_skb; /* The original teardown skb */
 532         struct sk_buff *teardown_skb; /* A copy to send through the AP */
 533         spinlock_t teardown_lock; /* To lock changing teardown_skb */
 534         bool tdls_chan_switch_prohibited;
 535
 536         /* WMM-AC TSPEC support */
 537         struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
 538         /* Use a separate work struct so that we can do something here
 539          * while the sdata->work is flushing the queues, for example.
 540          * otherwise, in scenarios where we hardly get any traffic out
 541          * on the BE queue, but there's a lot of VO traffic, we might
 542          * get stuck in a downgraded situation and flush takes forever.
 543          */
 544         struct delayed_work tx_tspec_wk;
 545 };
 546
 547 struct ieee80211_if_ibss {
 548         struct timer_list timer;
 549         struct work_struct csa_connection_drop_work;
 550
 551         unsigned long last_scan_completed;
 552
 553         u32 basic_rates;
 554
 555         bool fixed_bssid;
 556         bool fixed_channel;
 557         bool privacy;
 558
 559         bool control_port;
 560         bool userspace_handles_dfs;
 561
 562         u8 bssid[ETH_ALEN] __aligned(2);
 563         u8 ssid[IEEE80211_MAX_SSID_LEN];
 564         u8 ssid_len, ie_len;
 565         u8 *ie;
 566         struct cfg80211_chan_def chandef;
 567
 568         unsigned long ibss_join_req;
 569         /* probe response/beacon for IBSS */
 570         struct beacon_data __rcu *presp;
 571
 572         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 573         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 574
 575         spinlock_t incomplete_lock;
 576         struct list_head incomplete_stations;
 577
 578         enum {
 579                 IEEE80211_IBSS_MLME_SEARCH,
 580                 IEEE80211_IBSS_MLME_JOINED,
 581         } state;
 582 };
 583
 584 /**
 585  * struct ieee80211_if_ocb - OCB mode state
 586  *
 587  * @housekeeping_timer: timer for periodic invocation of a housekeeping task
 588  * @wrkq_flags: OCB deferred task action
 589  * @incomplete_lock: delayed STA insertion lock
 590  * @incomplete_stations: list of STAs waiting for delayed insertion
 591  * @joined: indication if the interface is connected to an OCB network
 592  */
 593 struct ieee80211_if_ocb {
 594         struct timer_list housekeeping_timer;
 595         unsigned long wrkq_flags;
 596
 597         spinlock_t incomplete_lock;
 598         struct list_head incomplete_stations;
 599
 600         bool joined;
 601 };
 602
 603 /**
 604  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 605  *
 606  * these declarations define the interface, which enables
 607  * vendor-specific mesh synchronization
 608  *
 609  */
 610 struct ieee802_11_elems;
 611 struct ieee80211_mesh_sync_ops {
 612         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 613                              u16 stype,
 614                              struct ieee80211_mgmt *mgmt,
 615                              struct ieee802_11_elems *elems,
 616                              struct ieee80211_rx_status *rx_status);
 617
 618         /* should be called with beacon_data under RCU read lock */
 619         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 620                             struct beacon_data *beacon);
 621         /* add other framework functions here */
 622 };
 623
 624 struct mesh_csa_settings {
 625         struct rcu_head rcu_head;
 626         struct cfg80211_csa_settings settings;
 627 };
 628
 629 struct ieee80211_if_mesh {
 630         struct timer_list housekeeping_timer;
 631         struct timer_list mesh_path_timer;
 632         struct timer_list mesh_path_root_timer;
 633
 634         unsigned long wrkq_flags;
 635         unsigned long mbss_changed;
 636
 637         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 638         size_t mesh_id_len;
 639         /* Active Path Selection Protocol Identifier */
 640         u8 mesh_pp_id;
 641         /* Active Path Selection Metric Identifier */
 642         u8 mesh_pm_id;
 643         /* Congestion Control Mode Identifier */
 644         u8 mesh_cc_id;
 645         /* Synchronization Protocol Identifier */
 646         u8 mesh_sp_id;
 647         /* Authentication Protocol Identifier */
 648         u8 mesh_auth_id;
 649         /* Local mesh Sequence Number */
 650         u32 sn;
 651         /* Last used PREQ ID */
 652         u32 preq_id;
 653         atomic_t mpaths;
 654         /* Timestamp of last SN update */
 655         unsigned long last_sn_update;
 656         /* Time when it's ok to send next PERR */
 657         unsigned long next_perr;
 658         /* Timestamp of last PREQ sent */
 659         unsigned long last_preq;
 660         struct mesh_rmc *rmc;
 661         spinlock_t mesh_preq_queue_lock;
 662         struct mesh_preq_queue preq_queue;
 663         int preq_queue_len;
 664         struct mesh_stats mshstats;
 665         struct mesh_config mshcfg;
 666         atomic_t estab_plinks;
 667         u32 mesh_seqnum;
 668         bool accepting_plinks;
 669         int num_gates;
 670         struct beacon_data __rcu *beacon;
 671         const u8 *ie;
 672         u8 ie_len;
 673         enum {
 674                 IEEE80211_MESH_SEC_NONE = 0x0,
 675                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 676                 IEEE80211_MESH_SEC_SECURED = 0x2,
 677         } security;
 678         bool user_mpm;
 679         /* Extensible Synchronization Framework */
 680         const struct ieee80211_mesh_sync_ops *sync_ops;
 681         s64 sync_offset_clockdrift_max;
 682         spinlock_t sync_offset_lock;
 683         bool adjusting_tbtt;
 684         /* mesh power save */
 685         enum nl80211_mesh_power_mode nonpeer_pm;
 686         int ps_peers_light_sleep;
 687         int ps_peers_deep_sleep;
 688         struct ps_data ps;
 689         /* Channel Switching Support */
 690         struct mesh_csa_settings __rcu *csa;
 691         enum {
 692                 IEEE80211_MESH_CSA_ROLE_NONE,
 693                 IEEE80211_MESH_CSA_ROLE_INIT,
 694                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 695         } csa_role;
 696         u8 chsw_ttl;
 697         u16 pre_value;
 698
 699         /* offset from skb->data while building IE */
 700         int meshconf_offset;
 701 };
 702
 703 #ifdef CONFIG_MAC80211_MESH
 704 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 705         do { (msh)->mshstats.name++; } while (0)
 706 #else
 707 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 708         do { } while (0)
 709 #endif
 710
 711 /**
 712  * enum ieee80211_sub_if_data_flags - virtual interface flags
 713  *
 714  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 715  * @IEEE80211_SDATA_PROMISC: interface is promisc
 716  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 717  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 718  *      associated stations and deliver multicast frames both
 719  *      back to wireless media and to the local net stack.
 720  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 721  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 722  */
 723 enum ieee80211_sub_if_data_flags {
 724         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 725         IEEE80211_SDATA_PROMISC                 = BIT(1),
 726         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 727         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 728         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 729         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 730 };
 731
 732 /**
 733  * enum ieee80211_sdata_state_bits - virtual interface state bits
 734  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 735  *      mirrors netif_running() but is separate for interface type
 736  *      change handling while the interface is up
 737  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 738  *      mode, so queues are stopped
 739  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 740  *      to offchannel, reset when offchannel returns
 741  */
 742 enum ieee80211_sdata_state_bits {
 743         SDATA_STATE_RUNNING,
 744         SDATA_STATE_OFFCHANNEL,
 745         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 746 };
 747
 748 /**
 749  * enum ieee80211_chanctx_mode - channel context configuration mode
 750  *
 751  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 752  *      multiple interfaces
 753  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 754  *      only by a single interface. This can be used for example for
 755  *      non-fixed channel IBSS.
 756  */
 757 enum ieee80211_chanctx_mode {
 758         IEEE80211_CHANCTX_SHARED,
 759         IEEE80211_CHANCTX_EXCLUSIVE
 760 };
 761
 762 /**
 763  * enum ieee80211_chanctx_replace_state - channel context replacement state
 764  *
 765  * This is used for channel context in-place reservations that require channel
 766  * context switch/swap.
 767  *
 768  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 769  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 770  *      by a (not yet registered) channel context pointed by %replace_ctx.
 771  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 772  *      replaces an existing channel context pointed to by %replace_ctx.
 773  */
 774 enum ieee80211_chanctx_replace_state {
 775         IEEE80211_CHANCTX_REPLACE_NONE,
 776         IEEE80211_CHANCTX_WILL_BE_REPLACED,
 777         IEEE80211_CHANCTX_REPLACES_OTHER,
 778 };
 779
 780 struct ieee80211_chanctx {
 781         struct list_head list;
 782         struct rcu_head rcu_head;
 783
 784         struct list_head assigned_vifs;
 785         struct list_head reserved_vifs;
 786
 787         enum ieee80211_chanctx_replace_state replace_state;
 788         struct ieee80211_chanctx *replace_ctx;
 789
 790         enum ieee80211_chanctx_mode mode;
 791         bool driver_present;
 792
 793         struct ieee80211_chanctx_conf conf;
 794 };
 795
 796 struct mac80211_qos_map {
 797         struct cfg80211_qos_map qos_map;
 798         struct rcu_head rcu_head;
 799 };
 800
 801 struct ieee80211_sub_if_data {
 802         struct list_head list;
 803
 804         struct wireless_dev wdev;
 805
 806         /* keys */
 807         struct list_head key_list;
 808
 809         /* count for keys needing tailroom space allocation */
 810         int crypto_tx_tailroom_needed_cnt;
 811         int crypto_tx_tailroom_pending_dec;
 812         struct delayed_work dec_tailroom_needed_wk;
 813
 814         struct net_device *dev;
 815         struct ieee80211_local *local;
 816
 817         unsigned int flags;
 818
 819         unsigned long state;
 820
 821         int drop_unencrypted;
 822
 823         char name[IFNAMSIZ];
 824
 825         /* Fragment table for host-based reassembly */
 826         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 827         unsigned int fragment_next;
 828
 829         /* TID bitmap for NoAck policy */
 830         u16 noack_map;
 831
 832         /* bit field of ACM bits (BIT(802.1D tag)) */
 833         u8 wmm_acm;
 834
 835         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 836         struct ieee80211_key __rcu *default_unicast_key;
 837         struct ieee80211_key __rcu *default_multicast_key;
 838         struct ieee80211_key __rcu *default_mgmt_key;
 839
 840         u16 sequence_number;
 841         __be16 control_port_protocol;
 842         bool control_port_no_encrypt;
 843         int encrypt_headroom;
 844
 845         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 846         struct mac80211_qos_map __rcu *qos_map;
 847
 848         struct work_struct csa_finalize_work;
 849         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 850         struct cfg80211_chan_def csa_chandef;
 851
 852         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 853         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 854
 855         /* context reservation -- protected with chanctx_mtx */
 856         struct ieee80211_chanctx *reserved_chanctx;
 857         struct cfg80211_chan_def reserved_chandef;
 858         bool reserved_radar_required;
 859         bool reserved_ready;
 860
 861         /* used to reconfigure hardware SM PS */
 862         struct work_struct recalc_smps;
 863
 864         struct work_struct work;
 865         struct sk_buff_head skb_queue;
 866
 867         u8 needed_rx_chains;
 868         enum ieee80211_smps_mode smps_mode;
 869
 870         int user_power_level; /* in dBm */
 871         int ap_power_level; /* in dBm */
 872
 873         bool radar_required;
 874         struct delayed_work dfs_cac_timer_work;
 875
 876         /*
 877          * AP this belongs to: self in AP mode and
 878          * corresponding AP in VLAN mode, NULL for
 879          * all others (might be needed later in IBSS)
 880          */
 881         struct ieee80211_if_ap *bss;
 882
 883         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 884         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 885
 886         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 887         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 888
 889         union {
 890                 struct ieee80211_if_ap ap;
 891                 struct ieee80211_if_wds wds;
 892                 struct ieee80211_if_vlan vlan;
 893                 struct ieee80211_if_managed mgd;
 894                 struct ieee80211_if_ibss ibss;
 895                 struct ieee80211_if_mesh mesh;
 896                 struct ieee80211_if_ocb ocb;
 897                 u32 mntr_flags;
 898         } u;
 899
 900 #ifdef CONFIG_MAC80211_DEBUGFS
 901         struct {
 902                 struct dentry *subdir_stations;
 903                 struct dentry *default_unicast_key;
 904                 struct dentry *default_multicast_key;
 905                 struct dentry *default_mgmt_key;
 906         } debugfs;
 907 #endif
 908
 909         /* must be last, dynamically sized area in this! */
 910         struct ieee80211_vif vif;
 911 };
 912
 913 static inline
 914 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 915 {
 916         return container_of(p, struct ieee80211_sub_if_data, vif);
 917 }
 918
 919 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 920         __acquires(&sdata->wdev.mtx)
 921 {
 922         mutex_lock(&sdata->wdev.mtx);
 923         __acquire(&sdata->wdev.mtx);
 924 }
 925
 926 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 927         __releases(&sdata->wdev.mtx)
 928 {
 929         mutex_unlock(&sdata->wdev.mtx);
 930         __release(&sdata->wdev.mtx);
 931 }
 932
 933 #define sdata_dereference(p, sdata) \
 934         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 935
 936 static inline void
 937 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 938 {
 939         lockdep_assert_held(&sdata->wdev.mtx);
 940 }
 941
 942 static inline enum ieee80211_band
 943 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 944 {
 945         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 946         struct ieee80211_chanctx_conf *chanctx_conf;
 947
 948         rcu_read_lock();
 949         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 950         if (!WARN_ON(!chanctx_conf))
 951                 band = chanctx_conf->def.chan->band;
 952         rcu_read_unlock();
 953
 954         return band;
 955 }
 956
 957 static inline int
 958 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 959 {
 960         switch (chandef->width) {
 961         case NL80211_CHAN_WIDTH_5:
 962                 return 2;
 963         case NL80211_CHAN_WIDTH_10:
 964                 return 1;
 965         default:
 966                 return 0;
 967         }
 968 }
 969
 970 static inline int
 971 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 972 {
 973         struct ieee80211_chanctx_conf *chanctx_conf;
 974         int shift = 0;
 975
 976         rcu_read_lock();
 977         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 978         if (chanctx_conf)
 979                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 980         rcu_read_unlock();
 981
 982         return shift;
 983 }
 984
 985 struct ieee80211_rx_agg {
 986         u8 addr[ETH_ALEN];
 987         u16 tid;
 988 };
 989
 990 enum sdata_queue_type {
 991         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 992         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 993         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 994         IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
 995         IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
 996         IEEE80211_SDATA_QUEUE_TDLS_CHSW         = 5,
 997 };
 998
 999 enum {
1000         IEEE80211_RX_MSG        = 1,
1001         IEEE80211_TX_STATUS_MSG = 2,
1002 };
1003
1004 enum queue_stop_reason {
1005         IEEE80211_QUEUE_STOP_REASON_DRIVER,
1006         IEEE80211_QUEUE_STOP_REASON_PS,
1007         IEEE80211_QUEUE_STOP_REASON_CSA,
1008         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1009         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1010         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1011         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1012         IEEE80211_QUEUE_STOP_REASON_FLUSH,
1013         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1014         IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1015
1016         IEEE80211_QUEUE_STOP_REASONS,
1017 };
1018
1019 #ifdef CONFIG_MAC80211_LEDS
1020 struct tpt_led_trigger {
1021         struct led_trigger trig;
1022         char name[32];
1023         const struct ieee80211_tpt_blink *blink_table;
1024         unsigned int blink_table_len;
1025         struct timer_list timer;
1026         unsigned long prev_traffic;
1027         unsigned long tx_bytes, rx_bytes;
1028         unsigned int active, want;
1029         bool running;
1030 };
1031 #endif
1032
1033 /*
1034  * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
1035  *
1036  * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
1037  * certain latency range (in Milliseconds). Each station that uses these
1038  * ranges will have bins to count the amount of frames received in that range.
1039  * The user can configure the ranges via debugfs.
1040  * If ranges is NULL then Tx latency statistics bins are disabled for all
1041  * stations.
1042  *
1043  * @n_ranges: number of ranges that are taken in account
1044  * @ranges: the ranges that the user requested or NULL if disabled.
1045  */
1046 struct ieee80211_tx_latency_bin_ranges {
1047         int n_ranges;
1048         u32 ranges[];
1049 };
1050
1051 /**
1052  * mac80211 scan flags - currently active scan mode
1053  *
1054  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1055  *      well be on the operating channel
1056  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1057  *      determine if we are on the operating channel or not
1058  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1059  *      channel. This should not interrupt normal traffic.
1060  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1061  *      that the scan completed.
1062  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1063  *      a scan complete for an aborted scan.
1064  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1065  *      cancelled.
1066  */
1067 enum {
1068         SCAN_SW_SCANNING,
1069         SCAN_HW_SCANNING,
1070         SCAN_ONCHANNEL_SCANNING,
1071         SCAN_COMPLETED,
1072         SCAN_ABORTED,
1073         SCAN_HW_CANCELLED,
1074 };
1075
1076 /**
1077  * enum mac80211_scan_state - scan state machine states
1078  *
1079  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1080  *      determines if we should keep on scanning or switch back to the
1081  *      operating channel
1082  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1083  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1084  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1085  *      send out data
1086  * @SCAN_RESUME: Resume the scan and scan the next channel
1087  * @SCAN_ABORT: Abort the scan and go back to operating channel
1088  */
1089 enum mac80211_scan_state {
1090         SCAN_DECISION,
1091         SCAN_SET_CHANNEL,
1092         SCAN_SEND_PROBE,
1093         SCAN_SUSPEND,
1094         SCAN_RESUME,
1095         SCAN_ABORT,
1096 };
1097
1098 struct ieee80211_local {
1099         /* embed the driver visible part.
1100          * don't cast (use the static inlines below), but we keep
1101          * it first anyway so they become a no-op */
1102         struct ieee80211_hw hw;
1103
1104         const struct ieee80211_ops *ops;
1105
1106         /*
1107          * private workqueue to mac80211. mac80211 makes this accessible
1108          * via ieee80211_queue_work()
1109          */
1110         struct workqueue_struct *workqueue;
1111
1112         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1113         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1114         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1115         spinlock_t queue_stop_reason_lock;
1116
1117         int open_count;
1118         int monitors, cooked_mntrs;
1119         /* number of interfaces with corresponding FIF_ flags */
1120         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1121             fif_probe_req;
1122         int probe_req_reg;
1123         unsigned int filter_flags; /* FIF_* */
1124
1125         bool wiphy_ciphers_allocated;
1126
1127         bool use_chanctx;
1128
1129         /* protects the aggregated multicast list and filter calls */
1130         spinlock_t filter_lock;
1131
1132         /* used for uploading changed mc list */
1133         struct work_struct reconfig_filter;
1134
1135         /* aggregated multicast list */
1136         struct netdev_hw_addr_list mc_list;
1137
1138         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1139
1140         /*
1141          * suspended is true if we finished all the suspend _and_ we have
1142          * not yet come up from resume. This is to be used by mac80211
1143          * to ensure driver sanity during suspend and mac80211's own
1144          * sanity. It can eventually be used for WoW as well.
1145          */
1146         bool suspended;
1147
1148         /*
1149          * Resuming is true while suspended, but when we're reprogramming the
1150          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1151          * again even though some other parts of the stack are still suspended
1152          * and we still drop received frames to avoid waking the stack.
1153          */
1154         bool resuming;
1155
1156         /*
1157          * quiescing is true during the suspend process _only_ to
1158          * ease timer cancelling etc.
1159          */
1160         bool quiescing;
1161
1162         /* device is started */
1163         bool started;
1164
1165         /* device is during a HW reconfig */
1166         bool in_reconfig;
1167
1168         /* wowlan is enabled -- don't reconfig on resume */
1169         bool wowlan;
1170
1171         struct work_struct radar_detected_work;
1172
1173         /* number of RX chains the hardware has */
1174         u8 rx_chains;
1175
1176         int tx_headroom; /* required headroom for hardware/radiotap */
1177
1178         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1179          * added to skb_queue will be processed, but frames in
1180          * skb_queue_unreliable may be dropped if the total length of these
1181          * queues increases over the limit. */
1182 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1183         struct tasklet_struct tasklet;
1184         struct sk_buff_head skb_queue;
1185         struct sk_buff_head skb_queue_unreliable;
1186
1187         spinlock_t rx_path_lock;
1188
1189         /* Station data */
1190         /*
1191          * The mutex only protects the list, hash table and
1192          * counter, reads are done with RCU.
1193          */
1194         struct mutex sta_mtx;
1195         spinlock_t tim_lock;
1196         unsigned long num_sta;
1197         struct list_head sta_list;
1198         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1199         struct timer_list sta_cleanup;
1200         int sta_generation;
1201
1202         /*
1203          * Tx latency statistics parameters for all stations.
1204          * Can enable via debugfs (NULL when disabled).
1205          */
1206         struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1207
1208         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1209         struct tasklet_struct tx_pending_tasklet;
1210
1211         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1212
1213         /* number of interfaces with corresponding IFF_ flags */
1214         atomic_t iff_allmultis, iff_promiscs;
1215
1216         struct rate_control_ref *rate_ctrl;
1217
1218         struct crypto_cipher *wep_tx_tfm;
1219         struct crypto_cipher *wep_rx_tfm;
1220         u32 wep_iv;
1221
1222         /* see iface.c */
1223         struct list_head interfaces;
1224         struct mutex iflist_mtx;
1225
1226         /*
1227          * Key mutex, protects sdata's key_list and sta_info's
1228          * key pointers (write access, they're RCU.)
1229          */
1230         struct mutex key_mtx;
1231
1232         /* mutex for scan and work locking */
1233         struct mutex mtx;
1234
1235         /* Scanning and BSS list */
1236         unsigned long scanning;
1237         struct cfg80211_ssid scan_ssid;
1238         struct cfg80211_scan_request *int_scan_req;
1239         struct cfg80211_scan_request __rcu *scan_req;
1240         struct ieee80211_scan_request *hw_scan_req;
1241         struct cfg80211_chan_def scan_chandef;
1242         enum ieee80211_band hw_scan_band;
1243         int scan_channel_idx;
1244         int scan_ies_len;
1245         int hw_scan_ies_bufsize;
1246
1247         struct work_struct sched_scan_stopped_work;
1248         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1249         struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1250         u8 scan_addr[ETH_ALEN];
1251
1252         unsigned long leave_oper_channel_time;
1253         enum mac80211_scan_state next_scan_state;
1254         struct delayed_work scan_work;
1255         struct ieee80211_sub_if_data __rcu *scan_sdata;
1256         /* For backward compatibility only -- do not use */
1257         struct cfg80211_chan_def _oper_chandef;
1258
1259         /* Temporary remain-on-channel for off-channel operations */
1260         struct ieee80211_channel *tmp_channel;
1261
1262         /* channel contexts */
1263         struct list_head chanctx_list;
1264         struct mutex chanctx_mtx;
1265
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 #ifdef CONFIG_MAC80211_LEDS
1279         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1280         struct tpt_led_trigger *tpt_led_trigger;
1281         char tx_led_name[32], rx_led_name[32],
1282              assoc_led_name[32], radio_led_name[32];
1283 #endif
1284
1285 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1286         /* TX/RX handler statistics */
1287         unsigned int tx_handlers_drop;
1288         unsigned int tx_handlers_queued;
1289         unsigned int tx_handlers_drop_unencrypted;
1290         unsigned int tx_handlers_drop_fragment;
1291         unsigned int tx_handlers_drop_wep;
1292         unsigned int tx_handlers_drop_not_assoc;
1293         unsigned int tx_handlers_drop_unauth_port;
1294         unsigned int rx_handlers_drop;
1295         unsigned int rx_handlers_queued;
1296         unsigned int rx_handlers_drop_nullfunc;
1297         unsigned int rx_handlers_drop_defrag;
1298         unsigned int rx_handlers_drop_short;
1299         unsigned int tx_expand_skb_head;
1300         unsigned int tx_expand_skb_head_cloned;
1301         unsigned int rx_expand_skb_head;
1302         unsigned int rx_expand_skb_head2;
1303         unsigned int rx_handlers_fragments;
1304         unsigned int tx_status_drop;
1305 #define I802_DEBUG_INC(c) (c)++
1306 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1307 #define I802_DEBUG_INC(c) do { } while (0)
1308 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1309
1310
1311         int total_ps_buffered; /* total number of all buffered unicast and
1312                                 * multicast packets for power saving stations
1313                                 */
1314
1315         bool pspolling;
1316         bool offchannel_ps_enabled;
1317         /*
1318          * PS can only be enabled when we have exactly one managed
1319          * interface (and monitors) in PS, this then points there.
1320          */
1321         struct ieee80211_sub_if_data *ps_sdata;
1322         struct work_struct dynamic_ps_enable_work;
1323         struct work_struct dynamic_ps_disable_work;
1324         struct timer_list dynamic_ps_timer;
1325         struct notifier_block network_latency_notifier;
1326         struct notifier_block ifa_notifier;
1327         struct notifier_block ifa6_notifier;
1328
1329         /*
1330          * The dynamic ps timeout configured from user space via WEXT -
1331          * this will override whatever chosen by mac80211 internally.
1332          */
1333         int dynamic_ps_forced_timeout;
1334
1335         int user_power_level; /* in dBm, for all interfaces */
1336
1337         enum ieee80211_smps_mode smps_mode;
1338
1339         struct work_struct restart_work;
1340
1341 #ifdef CONFIG_MAC80211_DEBUGFS
1342         struct local_debugfsdentries {
1343                 struct dentry *rcdir;
1344                 struct dentry *keys;
1345         } debugfs;
1346 #endif
1347
1348         /*
1349          * Remain-on-channel support
1350          */
1351         struct list_head roc_list;
1352         struct work_struct hw_roc_start, hw_roc_done;
1353         unsigned long hw_roc_start_time;
1354         u64 roc_cookie_counter;
1355
1356         struct idr ack_status_frames;
1357         spinlock_t ack_status_lock;
1358
1359         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1360
1361         struct napi_struct *napi;
1362
1363         /* virtual monitor interface */
1364         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1365         struct cfg80211_chan_def monitor_chandef;
1366
1367         /* extended capabilities provided by mac80211 */
1368         u8 ext_capa[8];
1369 };
1370
1371 static inline struct ieee80211_sub_if_data *
1372 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1373 {
1374         return netdev_priv(dev);
1375 }
1376
1377 static inline struct ieee80211_sub_if_data *
1378 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1379 {
1380         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1381 }
1382
1383 /* this struct represents 802.11n's RA/TID combination */
1384 struct ieee80211_ra_tid {
1385         u8 ra[ETH_ALEN];
1386         u16 tid;
1387 };
1388
1389 /* this struct holds the value parsing from channel switch IE  */
1390 struct ieee80211_csa_ie {
1391         struct cfg80211_chan_def chandef;
1392         u8 mode;
1393         u8 count;
1394         u8 ttl;
1395         u16 pre_value;
1396 };
1397
1398 /* Parsed Information Elements */
1399 struct ieee802_11_elems {
1400         const u8 *ie_start;
1401         size_t total_len;
1402
1403         /* pointers to IEs */
1404         const struct ieee80211_tdls_lnkie *lnk_id;
1405         const struct ieee80211_ch_switch_timing *ch_sw_timing;
1406         const u8 *ext_capab;
1407         const u8 *ssid;
1408         const u8 *supp_rates;
1409         const u8 *ds_params;
1410         const struct ieee80211_tim_ie *tim;
1411         const u8 *challenge;
1412         const u8 *rsn;
1413         const u8 *erp_info;
1414         const u8 *ext_supp_rates;
1415         const u8 *wmm_info;
1416         const u8 *wmm_param;
1417         const struct ieee80211_ht_cap *ht_cap_elem;
1418         const struct ieee80211_ht_operation *ht_operation;
1419         const struct ieee80211_vht_cap *vht_cap_elem;
1420         const struct ieee80211_vht_operation *vht_operation;
1421         const struct ieee80211_meshconf_ie *mesh_config;
1422         const u8 *mesh_id;
1423         const u8 *peering;
1424         const __le16 *awake_window;
1425         const u8 *preq;
1426         const u8 *prep;
1427         const u8 *perr;
1428         const struct ieee80211_rann_ie *rann;
1429         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1430         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1431         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1432         const u8 *country_elem;
1433         const u8 *pwr_constr_elem;
1434         const u8 *cisco_dtpc_elem;
1435         const struct ieee80211_timeout_interval_ie *timeout_int;
1436         const u8 *opmode_notif;
1437         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1438         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1439
1440         /* length of them, respectively */
1441         u8 ext_capab_len;
1442         u8 ssid_len;
1443         u8 supp_rates_len;
1444         u8 tim_len;
1445         u8 challenge_len;
1446         u8 rsn_len;
1447         u8 ext_supp_rates_len;
1448         u8 wmm_info_len;
1449         u8 wmm_param_len;
1450         u8 mesh_id_len;
1451         u8 peering_len;
1452         u8 preq_len;
1453         u8 prep_len;
1454         u8 perr_len;
1455         u8 country_elem_len;
1456
1457         /* whether a parse error occurred while retrieving these elements */
1458         bool parse_error;
1459 };
1460
1461 static inline struct ieee80211_local *hw_to_local(
1462         struct ieee80211_hw *hw)
1463 {
1464         return container_of(hw, struct ieee80211_local, hw);
1465 }
1466
1467
1468 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1469 {
1470         return ether_addr_equal(raddr, addr) ||
1471                is_broadcast_ether_addr(raddr);
1472 }
1473
1474 static inline bool
1475 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1476 {
1477         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1478                      status->flag & RX_FLAG_MACTIME_END);
1479         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1480 }
1481
1482 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1483                                      struct ieee80211_rx_status *status,
1484                                      unsigned int mpdu_len,
1485                                      unsigned int mpdu_offset);
1486 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1487 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1488 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1489                                       u32 changed);
1490 void ieee80211_configure_filter(struct ieee80211_local *local);
1491 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1492
1493 /* STA code */
1494 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1495 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1496                        struct cfg80211_auth_request *req);
1497 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1498                         struct cfg80211_assoc_request *req);
1499 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1500                          struct cfg80211_deauth_request *req);
1501 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1502                            struct cfg80211_disassoc_request *req);
1503 void ieee80211_send_pspoll(struct ieee80211_local *local,
1504                            struct ieee80211_sub_if_data *sdata);
1505 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1506 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1507 int ieee80211_max_network_latency(struct notifier_block *nb,
1508                                   unsigned long data, void *dummy);
1509 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1511 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1512                                   struct sk_buff *skb);
1513 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1514 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1515 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1516 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1517                                   __le16 fc, bool acked);
1518 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1519 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1520 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1521
1522 /* IBSS code */
1523 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1524 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1525 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1526                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1527 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1528                         struct cfg80211_ibss_params *params);
1529 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1530 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1531 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1532                                    struct sk_buff *skb);
1533 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1534                               struct cfg80211_csa_settings *csa_settings);
1535 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1536 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1537
1538 /* OCB code */
1539 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1540 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1541                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1542 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1543 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1544                        struct ocb_setup *setup);
1545 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1546
1547 /* mesh code */
1548 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1549 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1550                                    struct sk_buff *skb);
1551 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1552                               struct cfg80211_csa_settings *csa_settings);
1553 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1554
1555 /* scan/BSS handling */
1556 void ieee80211_scan_work(struct work_struct *work);
1557 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1558                                 const u8 *ssid, u8 ssid_len,
1559                                 struct ieee80211_channel *chan,
1560                                 enum nl80211_bss_scan_width scan_width);
1561 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1562                            struct cfg80211_scan_request *req);
1563 void ieee80211_scan_cancel(struct ieee80211_local *local);
1564 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1565 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1566
1567 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1568 struct ieee80211_bss *
1569 ieee80211_bss_info_update(struct ieee80211_local *local,
1570                           struct ieee80211_rx_status *rx_status,
1571                           struct ieee80211_mgmt *mgmt,
1572                           size_t len,
1573                           struct ieee802_11_elems *elems,
1574                           struct ieee80211_channel *channel);
1575 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1576                           struct ieee80211_bss *bss);
1577
1578 /* scheduled scan handling */
1579 int
1580 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1581                                      struct cfg80211_sched_scan_request *req);
1582 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1583                                        struct cfg80211_sched_scan_request *req);
1584 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1585 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1586 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1587
1588 /* off-channel helpers */
1589 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1590 void ieee80211_offchannel_return(struct ieee80211_local *local);
1591 void ieee80211_roc_setup(struct ieee80211_local *local);
1592 void ieee80211_start_next_roc(struct ieee80211_local *local);
1593 void ieee80211_roc_purge(struct ieee80211_local *local,
1594                          struct ieee80211_sub_if_data *sdata);
1595 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1596 void ieee80211_sw_roc_work(struct work_struct *work);
1597 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1598
1599 /* channel switch handling */
1600 void ieee80211_csa_finalize_work(struct work_struct *work);
1601 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1602                              struct cfg80211_csa_settings *params);
1603
1604 /* interface handling */
1605 int ieee80211_iface_init(void);
1606 void ieee80211_iface_exit(void);
1607 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1608                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1609                      struct vif_params *params);
1610 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1611                              enum nl80211_iftype type);
1612 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1613 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1614 u32 ieee80211_idle_off(struct ieee80211_local *local);
1615 void ieee80211_recalc_idle(struct ieee80211_local *local);
1616 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1617                                     const int offset);
1618 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1619 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1620 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1621 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1622
1623 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1624 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1625                               bool update_bss);
1626
1627 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1628 {
1629         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1630 }
1631
1632 /* tx handling */
1633 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1634 void ieee80211_tx_pending(unsigned long data);
1635 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1636                                          struct net_device *dev);
1637 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1638                                        struct net_device *dev);
1639 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1640                                   struct net_device *dev,
1641                                   u32 info_flags);
1642 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1643                               struct sk_buff_head *skbs);
1644 struct sk_buff *
1645 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1646                               struct sk_buff *skb, u32 info_flags);
1647
1648 /* HT */
1649 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1650                                      struct ieee80211_sta_ht_cap *ht_cap);
1651 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1652                                        struct ieee80211_supported_band *sband,
1653                                        const struct ieee80211_ht_cap *ht_cap_ie,
1654                                        struct sta_info *sta);
1655 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1656                           const u8 *da, u16 tid,
1657                           u16 initiator, u16 reason_code);
1658 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1659                                enum ieee80211_smps_mode smps, const u8 *da,
1660                                const u8 *bssid);
1661 void ieee80211_request_smps_ap_work(struct work_struct *work);
1662 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1663 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1664                                    enum ieee80211_smps_mode smps_mode_new);
1665
1666 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1667                                      u16 initiator, u16 reason, bool stop);
1668 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1669                                     u16 initiator, u16 reason, bool stop);
1670 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1671                                      u8 dialog_token, u16 timeout,
1672                                      u16 start_seq_num, u16 ba_policy, u16 tid,
1673                                      u16 buf_size, bool tx, bool auto_seq);
1674 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1675                                          enum ieee80211_agg_stop_reason reason);
1676 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1677                              struct sta_info *sta,
1678                              struct ieee80211_mgmt *mgmt, size_t len);
1679 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1680                                   struct sta_info *sta,
1681                                   struct ieee80211_mgmt *mgmt,
1682                                   size_t len);
1683 void ieee80211_process_addba_request(struct ieee80211_local *local,
1684                                      struct sta_info *sta,
1685                                      struct ieee80211_mgmt *mgmt,
1686                                      size_t len);
1687
1688 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1689                                    enum ieee80211_agg_stop_reason reason);
1690 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1691                                     enum ieee80211_agg_stop_reason reason);
1692 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1693 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1694 void ieee80211_ba_session_work(struct work_struct *work);
1695 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1696 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1697
1698 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1699
1700 /* VHT */
1701 void
1702 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1703                                     struct ieee80211_supported_band *sband,
1704                                     const struct ieee80211_vht_cap *vht_cap_ie,
1705                                     struct sta_info *sta);
1706 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1707 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1708 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1709 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1710                                   struct sta_info *sta, u8 opmode,
1711                                   enum ieee80211_band band, bool nss_only);
1712 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1713                                  struct sta_info *sta, u8 opmode,
1714                                  enum ieee80211_band band, bool nss_only);
1715 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1716                                       struct ieee80211_sta_vht_cap *vht_cap);
1717
1718 /* Spectrum management */
1719 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1720                                        struct ieee80211_mgmt *mgmt,
1721                                        size_t len);
1722 /**
1723  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1724  * @sdata: the sdata of the interface which has received the frame
1725  * @elems: parsed 802.11 elements received with the frame
1726  * @current_band: indicates the current band
1727  * @sta_flags: contains information about own capabilities and restrictions
1728  *      to decide which channel switch announcements can be accepted. Only the
1729  *      following subset of &enum ieee80211_sta_flags are evaluated:
1730  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1731  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1732  *      %IEEE80211_STA_DISABLE_160MHZ.
1733  * @bssid: the currently connected bssid (for reporting)
1734  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1735         All of them will be filled with if success only.
1736  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1737  */
1738 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1739                                  struct ieee802_11_elems *elems,
1740                                  enum ieee80211_band current_band,
1741                                  u32 sta_flags, u8 *bssid,
1742                                  struct ieee80211_csa_ie *csa_ie);
1743
1744 /* Suspend/resume and hw reconfiguration */
1745 int ieee80211_reconfig(struct ieee80211_local *local);
1746 void ieee80211_stop_device(struct ieee80211_local *local);
1747
1748 int __ieee80211_suspend(struct ieee80211_hw *hw,
1749                         struct cfg80211_wowlan *wowlan);
1750
1751 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1752 {
1753         struct ieee80211_local *local = hw_to_local(hw);
1754
1755         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1756              !test_bit(SCAN_COMPLETED, &local->scanning),
1757                 "%s: resume with hardware scan still in progress\n",
1758                 wiphy_name(hw->wiphy));
1759
1760         return ieee80211_reconfig(hw_to_local(hw));
1761 }
1762
1763 /* utility functions/constants */
1764 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1765 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1766                         enum nl80211_iftype type);
1767 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1768                              int rate, int erp, int short_preamble,
1769                              int shift);
1770 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1771                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1772                                      gfp_t gfp);
1773 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1774                                bool bss_notify);
1775 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1776
1777 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1778                                  struct sk_buff *skb, int tid,
1779                                  enum ieee80211_band band);
1780
1781 static inline void
1782 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1783                           struct sk_buff *skb, int tid,
1784                           enum ieee80211_band band)
1785 {
1786         rcu_read_lock();
1787         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1788         rcu_read_unlock();
1789 }
1790
1791 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1792                                         struct sk_buff *skb, int tid)
1793 {
1794         struct ieee80211_chanctx_conf *chanctx_conf;
1795
1796         rcu_read_lock();
1797         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1798         if (WARN_ON(!chanctx_conf)) {
1799                 rcu_read_unlock();
1800                 kfree_skb(skb);
1801                 return;
1802         }
1803
1804         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1805                                     chanctx_conf->def.chan->band);
1806         rcu_read_unlock();
1807 }
1808
1809 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1810                                     struct sk_buff *skb)
1811 {
1812         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1813         ieee80211_tx_skb_tid(sdata, skb, 7);
1814 }
1815
1816 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1817                                struct ieee802_11_elems *elems,
1818                                u64 filter, u32 crc);
1819 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1820                                           bool action,
1821                                           struct ieee802_11_elems *elems)
1822 {
1823         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1824 }
1825
1826 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1827 {
1828         struct sk_buff *tail = skb_peek_tail(frames);
1829         struct ieee80211_rx_status *status;
1830
1831         if (!tail)
1832                 return false;
1833
1834         status = IEEE80211_SKB_RXCB(tail);
1835         if (status->flag & RX_FLAG_AMSDU_MORE)
1836                 return false;
1837
1838         return true;
1839 }
1840
1841 extern const int ieee802_1d_to_ac[8];
1842
1843 static inline int ieee80211_ac_from_tid(int tid)
1844 {
1845         return ieee802_1d_to_ac[tid & 7];
1846 }
1847
1848 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1849 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1850 void ieee80211_dynamic_ps_timer(unsigned long data);
1851 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1852                              struct ieee80211_sub_if_data *sdata,
1853                              int powersave);
1854 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1855                              struct ieee80211_hdr *hdr);
1856 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1857                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1858
1859 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1860                                      unsigned long queues,
1861                                      enum queue_stop_reason reason,
1862                                      bool refcounted);
1863 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1864                                struct ieee80211_sub_if_data *sdata,
1865                                enum queue_stop_reason reason);
1866 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1867                                struct ieee80211_sub_if_data *sdata,
1868                                enum queue_stop_reason reason);
1869 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1870                                      unsigned long queues,
1871                                      enum queue_stop_reason reason,
1872                                      bool refcounted);
1873 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1874                                     enum queue_stop_reason reason,
1875                                     bool refcounted);
1876 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1877                                     enum queue_stop_reason reason,
1878                                     bool refcounted);
1879 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1880 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1881                                struct sk_buff *skb);
1882 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1883                                 struct sk_buff_head *skbs);
1884 void ieee80211_flush_queues(struct ieee80211_local *local,
1885                             struct ieee80211_sub_if_data *sdata, bool drop);
1886 void __ieee80211_flush_queues(struct ieee80211_local *local,
1887                               struct ieee80211_sub_if_data *sdata,
1888                               unsigned int queues, bool drop);
1889
1890 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1891 {
1892         /*
1893          * If quiescing is set, we are racing with __ieee80211_suspend.
1894          * __ieee80211_suspend flushes the workers after setting quiescing,
1895          * and we check quiescing / suspended before enqueing new workers.
1896          * We should abort the worker to avoid the races below.
1897          */
1898         if (local->quiescing)
1899                 return false;
1900
1901         /*
1902          * We might already be suspended if the following scenario occurs:
1903          * __ieee80211_suspend          Control path
1904          *
1905          *                              if (local->quiescing)
1906          *                                      return;
1907          * local->quiescing = true;
1908          * flush_workqueue();
1909          *                              queue_work(...);
1910          * local->suspended = true;
1911          * local->quiescing = false;
1912          *                              worker starts running...
1913          */
1914         if (local->suspended)
1915                 return false;
1916
1917         return true;
1918 }
1919
1920 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1921                          u16 transaction, u16 auth_alg, u16 status,
1922                          const u8 *extra, size_t extra_len, const u8 *bssid,
1923                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1924                          u32 tx_flags);
1925 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1926                                     const u8 *bssid, u16 stype, u16 reason,
1927                                     bool send_frame, u8 *frame_buf);
1928 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1929                              size_t buffer_len,
1930                              struct ieee80211_scan_ies *ie_desc,
1931                              const u8 *ie, size_t ie_len,
1932                              u8 bands_used, u32 *rate_masks,
1933                              struct cfg80211_chan_def *chandef);
1934 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1935                                           const u8 *src, const u8 *dst,
1936                                           u32 ratemask,
1937                                           struct ieee80211_channel *chan,
1938                                           const u8 *ssid, size_t ssid_len,
1939                                           const u8 *ie, size_t ie_len,
1940                                           bool directed);
1941 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1942                               const u8 *src, const u8 *dst,
1943                               const u8 *ssid, size_t ssid_len,
1944                               const u8 *ie, size_t ie_len,
1945                               u32 ratemask, bool directed, u32 tx_flags,
1946                               struct ieee80211_channel *channel, bool scan);
1947
1948 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1949                             struct ieee802_11_elems *elems,
1950                             enum ieee80211_band band, u32 *basic_rates);
1951 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1952                                  enum ieee80211_smps_mode smps_mode);
1953 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1954                                 enum ieee80211_smps_mode smps_mode);
1955 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1956 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1957
1958 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen,
1959                               const u8 *ids, int n_ids,
1960                               const u8 *after_ric, int n_after_ric,
1961                               size_t offset);
1962 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1963 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1964                               u16 cap);
1965 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1966                                const struct cfg80211_chan_def *chandef,
1967                                u16 prot_mode);
1968 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1969                                u32 cap);
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 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1986
1987 int __must_check
1988 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1989                           const struct cfg80211_chan_def *chandef,
1990                           enum ieee80211_chanctx_mode mode);
1991 int __must_check
1992 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1993                               const struct cfg80211_chan_def *chandef,
1994                               enum ieee80211_chanctx_mode mode,
1995                               bool radar_required);
1996 int __must_check
1997 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1998 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1999
2000 int __must_check
2001 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2002                                const struct cfg80211_chan_def *chandef,
2003                                u32 *changed);
2004 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2005 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2006 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2007                                          bool clear);
2008 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2009                                struct ieee80211_chanctx *ctx);
2010
2011 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2012                                    struct ieee80211_chanctx *chanctx);
2013 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2014                                       struct ieee80211_chanctx *ctx);
2015 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2016
2017 void ieee80211_dfs_cac_timer(unsigned long data);
2018 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2019 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2020 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2021 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2022                               struct cfg80211_csa_settings *csa_settings);
2023
2024 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2025 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2026 const struct ieee80211_cipher_scheme *
2027 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2028                  enum nl80211_iftype iftype);
2029 int ieee80211_cs_headroom(struct ieee80211_local *local,
2030                           struct cfg80211_crypto_settings *crypto,
2031                           enum nl80211_iftype iftype);
2032 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2033                            struct ieee80211_sub_if_data *sdata);
2034 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2035                                  const struct cfg80211_chan_def *chandef,
2036                                  enum ieee80211_chanctx_mode chanmode,
2037                                  u8 radar_detect);
2038 int ieee80211_max_num_channels(struct ieee80211_local *local);
2039
2040 /* TDLS */
2041 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2042                         const u8 *peer, u8 action_code, u8 dialog_token,
2043                         u16 status_code, u32 peer_capability,
2044                         bool initiator, const u8 *extra_ies,
2045                         size_t extra_ies_len);
2046 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2047                         const u8 *peer, enum nl80211_tdls_operation oper);
2048 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2049 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2050                                   const u8 *addr, u8 oper_class,
2051                                   struct cfg80211_chan_def *chandef);
2052 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2053                                           struct net_device *dev,
2054                                           const u8 *addr);
2055 void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2056                                            struct sk_buff *skb);
2057
2058 extern const struct ethtool_ops ieee80211_ethtool_ops;
2059
2060 #ifdef CONFIG_MAC80211_NOINLINE
2061 #define debug_noinline noinline
2062 #else
2063 #define debug_noinline
2064 #endif
2065
2066 #endif /* IEEE80211_I_H */