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  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef IEEE80211_I_H
  13 #define IEEE80211_I_H
  14
  15 #include <linux/kernel.h>
  16 #include <linux/device.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/types.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/leds.h>
  27 #include <linux/idr.h>
  28 #include <net/ieee80211_radiotap.h>
  29 #include <net/cfg80211.h>
  30 #include <net/mac80211.h>
  31 #include "key.h"
  32 #include "sta_info.h"
  33 #include "debug.h"
  34
  35 struct ieee80211_local;
  36
  37 /* Maximum number of broadcast/multicast frames to buffer when some of the
  38  * associated stations are using power saving. */
  39 #define AP_MAX_BC_BUFFER 128
  40
  41 /* Maximum number of frames buffered to all STAs, including multicast frames.
  42  * Note: increasing this limit increases the potential memory requirement. Each
  43  * frame can be up to about 2 kB long. */
  44 #define TOTAL_MAX_TX_BUFFER 512
  45
  46 /* Required encryption head and tailroom */
  47 #define IEEE80211_ENCRYPT_HEADROOM 8
  48 #define IEEE80211_ENCRYPT_TAILROOM 18
  49
  50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  51  * reception of at least three fragmented frames. This limit can be increased
  52  * by changing this define, at the cost of slower frame reassembly and
  53  * increased memory use (about 2 kB of RAM per entry). */
  54 #define IEEE80211_FRAGMENT_MAX 4
  55
  56 /* power level hasn't been configured (or set to automatic) */
  57 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  58
  59 /*
  60  * Some APs experience problems when working with U-APSD. Decrease the
  61  * probability of that happening by using legacy mode for all ACs but VO.
  62  * The AP that caused us trouble was a Cisco 4410N. It ignores our
  63  * setting, and always treats non-VO ACs as legacy.
  64  */
  65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  66         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  67
  68 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  69         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  70
  71 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  72
  73 struct ieee80211_fragment_entry {
  74         unsigned long first_frag_time;
  75         unsigned int seq;
  76         unsigned int rx_queue;
  77         unsigned int last_frag;
  78         unsigned int extra_len;
  79         struct sk_buff_head skb_list;
  80         int ccmp; /* Whether fragments were encrypted with CCMP */
  81         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  82 };
  83
  84
  85 struct ieee80211_bss {
  86         u32 device_ts_beacon, device_ts_presp;
  87
  88         bool wmm_used;
  89         bool uapsd_supported;
  90
  91 #define IEEE80211_MAX_SUPP_RATES 32
  92         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  93         size_t supp_rates_len;
  94         struct ieee80211_rate *beacon_rate;
  95
  96         /*
  97          * During association, we save an ERP value from a probe response so
  98          * that we can feed ERP info to the driver when handling the
  99          * association completes. these fields probably won't be up-to-date
 100          * otherwise, you probably don't want to use them.
 101          */
 102         bool has_erp_value;
 103         u8 erp_value;
 104
 105         /* Keep track of the corruption of the last beacon/probe response. */
 106         u8 corrupt_data;
 107
 108         /* Keep track of what bits of information we have valid info for. */
 109         u8 valid_data;
 110 };
 111
 112 /**
 113  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 114  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 115  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 116  *
 117  * These are bss flags that are attached to a bss in the
 118  * @corrupt_data field of &struct ieee80211_bss.
 119  */
 120 enum ieee80211_bss_corrupt_data_flags {
 121         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 122         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 123 };
 124
 125 /**
 126  * enum ieee80211_valid_data_flags - BSS valid data flags
 127  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 128  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 129  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 130  *
 131  * These are bss flags that are attached to a bss in the
 132  * @valid_data field of &struct ieee80211_bss.  They show which parts
 133  * of the data structure were recieved as a result of an un-corrupted
 134  * beacon/probe response.
 135  */
 136 enum ieee80211_bss_valid_data_flags {
 137         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 138         IEEE80211_BSS_VALID_RATES               = BIT(2),
 139         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 140 };
 141
 142 typedef unsigned __bitwise__ ieee80211_tx_result;
 143 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 144 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 145 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 146
 147 #define IEEE80211_TX_UNICAST            BIT(1)
 148 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 149
 150 struct ieee80211_tx_data {
 151         struct sk_buff *skb;
 152         struct sk_buff_head skbs;
 153         struct ieee80211_local *local;
 154         struct ieee80211_sub_if_data *sdata;
 155         struct sta_info *sta;
 156         struct ieee80211_key *key;
 157         struct ieee80211_tx_rate rate;
 158
 159         unsigned int flags;
 160 };
 161
 162
 163 typedef unsigned __bitwise__ ieee80211_rx_result;
 164 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 165 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 166 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 167 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 168
 169 /**
 170  * enum ieee80211_packet_rx_flags - packet RX flags
 171  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 172  *      (incl. multicast frames)
 173  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 174  * @IEEE80211_RX_AMSDU: a-MSDU packet
 175  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 176  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 177  *
 178  * These are per-frame flags that are attached to a frame in the
 179  * @rx_flags field of &struct ieee80211_rx_status.
 180  */
 181 enum ieee80211_packet_rx_flags {
 182         IEEE80211_RX_RA_MATCH                   = BIT(1),
 183         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 184         IEEE80211_RX_AMSDU                      = BIT(3),
 185         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 186         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 187 };
 188
 189 /**
 190  * enum ieee80211_rx_flags - RX data flags
 191  *
 192  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 193  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 194  *      to cfg80211_report_obss_beacon().
 195  *
 196  * These flags are used across handling multiple interfaces
 197  * for a single frame.
 198  */
 199 enum ieee80211_rx_flags {
 200         IEEE80211_RX_CMNTR              = BIT(0),
 201         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 202 };
 203
 204 struct ieee80211_rx_data {
 205         struct sk_buff *skb;
 206         struct ieee80211_local *local;
 207         struct ieee80211_sub_if_data *sdata;
 208         struct sta_info *sta;
 209         struct ieee80211_key *key;
 210
 211         unsigned int flags;
 212
 213         /*
 214          * Index into sequence numbers array, 0..16
 215          * since the last (16) is used for non-QoS,
 216          * will be 16 on non-QoS frames.
 217          */
 218         int seqno_idx;
 219
 220         /*
 221          * Index into the security IV/PN arrays, 0..16
 222          * since the last (16) is used for CCMP-encrypted
 223          * management frames, will be set to 16 on mgmt
 224          * frames and 0 on non-QoS frames.
 225          */
 226         int security_idx;
 227
 228         u32 tkip_iv32;
 229         u16 tkip_iv16;
 230 };
 231
 232 struct beacon_data {
 233         u8 *head, *tail;
 234         int head_len, tail_len;
 235         struct ieee80211_meshconf_ie *meshconf;
 236         struct rcu_head rcu_head;
 237 };
 238
 239 struct probe_resp {
 240         struct rcu_head rcu_head;
 241         int len;
 242         u8 data[0];
 243 };
 244
 245 struct ps_data {
 246         /* yes, this looks ugly, but guarantees that we can later use
 247          * bitmap_empty :)
 248          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 249         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 250                         __aligned(__alignof__(unsigned long));
 251         struct sk_buff_head bc_buf;
 252         atomic_t num_sta_ps; /* number of stations in PS mode */
 253         int dtim_count;
 254         bool dtim_bc_mc;
 255 };
 256
 257 struct ieee80211_if_ap {
 258         struct beacon_data __rcu *beacon;
 259         struct probe_resp __rcu *probe_resp;
 260
 261         /* to be used after channel switch. */
 262         struct cfg80211_beacon_data *next_beacon;
 263         struct list_head vlans;
 264
 265         struct ps_data ps;
 266         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 267         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 268                          driver_smps_mode; /* smps mode request */
 269
 270         struct work_struct request_smps_work;
 271 };
 272
 273 struct ieee80211_if_wds {
 274         struct sta_info *sta;
 275         u8 remote_addr[ETH_ALEN];
 276 };
 277
 278 struct ieee80211_if_vlan {
 279         struct list_head list;
 280
 281         /* used for all tx if the VLAN is configured to 4-addr mode */
 282         struct sta_info __rcu *sta;
 283 };
 284
 285 struct mesh_stats {
 286         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 287         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 288         __u32 fwded_frames;             /* Mesh total forwarded frames */
 289         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 290         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 291         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 292 };
 293
 294 #define PREQ_Q_F_START          0x1
 295 #define PREQ_Q_F_REFRESH        0x2
 296 struct mesh_preq_queue {
 297         struct list_head list;
 298         u8 dst[ETH_ALEN];
 299         u8 flags;
 300 };
 301
 302 #if HZ/100 == 0
 303 #define IEEE80211_ROC_MIN_LEFT  1
 304 #else
 305 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 306 #endif
 307
 308 struct ieee80211_roc_work {
 309         struct list_head list;
 310         struct list_head dependents;
 311
 312         struct delayed_work work;
 313
 314         struct ieee80211_sub_if_data *sdata;
 315
 316         struct ieee80211_channel *chan;
 317
 318         bool started, abort, hw_begun, notified;
 319         bool to_be_freed;
 320
 321         unsigned long hw_start_time;
 322
 323         u32 duration, req_duration;
 324         struct sk_buff *frame;
 325         u64 cookie, mgmt_tx_cookie;
 326         enum ieee80211_roc_type type;
 327 };
 328
 329 /* flags used in struct ieee80211_if_managed.flags */
 330 enum ieee80211_sta_flags {
 331         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 332         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 333         IEEE80211_STA_DISABLE_HT        = BIT(4),
 334         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 335         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 336         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 337         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 338         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 339         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 340         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 341         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 342         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 343         IEEE80211_STA_DISABLE_WMM       = BIT(14),
 344 };
 345
 346 struct ieee80211_mgd_auth_data {
 347         struct cfg80211_bss *bss;
 348         unsigned long timeout;
 349         int tries;
 350         u16 algorithm, expected_transaction;
 351
 352         u8 key[WLAN_KEY_LEN_WEP104];
 353         u8 key_len, key_idx;
 354         bool done;
 355         bool timeout_started;
 356
 357         u16 sae_trans, sae_status;
 358         size_t data_len;
 359         u8 data[];
 360 };
 361
 362 struct ieee80211_mgd_assoc_data {
 363         struct cfg80211_bss *bss;
 364         const u8 *supp_rates;
 365
 366         unsigned long timeout;
 367         int tries;
 368
 369         u16 capability;
 370         u8 prev_bssid[ETH_ALEN];
 371         u8 ssid[IEEE80211_MAX_SSID_LEN];
 372         u8 ssid_len;
 373         u8 supp_rates_len;
 374         bool wmm, uapsd;
 375         bool need_beacon;
 376         bool synced;
 377         bool timeout_started;
 378
 379         u8 ap_ht_param;
 380
 381         struct ieee80211_vht_cap ap_vht_cap;
 382
 383         size_t ie_len;
 384         u8 ie[];
 385 };
 386
 387 struct ieee80211_if_managed {
 388         struct timer_list timer;
 389         struct timer_list conn_mon_timer;
 390         struct timer_list bcn_mon_timer;
 391         struct timer_list chswitch_timer;
 392         struct work_struct monitor_work;
 393         struct work_struct chswitch_work;
 394         struct work_struct beacon_connection_loss_work;
 395         struct work_struct csa_connection_drop_work;
 396
 397         unsigned long beacon_timeout;
 398         unsigned long probe_timeout;
 399         int probe_send_count;
 400         bool nullfunc_failed;
 401         bool connection_loss;
 402
 403         struct cfg80211_bss *associated;
 404         struct ieee80211_mgd_auth_data *auth_data;
 405         struct ieee80211_mgd_assoc_data *assoc_data;
 406
 407         u8 bssid[ETH_ALEN];
 408
 409         u16 aid;
 410
 411         bool powersave; /* powersave requested for this iface */
 412         bool broken_ap; /* AP is broken -- turn off powersave */
 413         bool have_beacon;
 414         u8 dtim_period;
 415         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 416                                  driver_smps_mode; /* smps mode request */
 417
 418         struct work_struct request_smps_work;
 419
 420         unsigned int flags;
 421
 422         bool beacon_crc_valid;
 423         u32 beacon_crc;
 424
 425         bool status_acked;
 426         bool status_received;
 427         __le16 status_fc;
 428
 429         enum {
 430                 IEEE80211_MFP_DISABLED,
 431                 IEEE80211_MFP_OPTIONAL,
 432                 IEEE80211_MFP_REQUIRED
 433         } mfp; /* management frame protection */
 434
 435         /*
 436          * Bitmask of enabled u-apsd queues,
 437          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 438          * to take effect.
 439          */
 440         unsigned int uapsd_queues;
 441
 442         /*
 443          * Maximum number of buffered frames AP can deliver during a
 444          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 445          * Needs a new association to take effect.
 446          */
 447         unsigned int uapsd_max_sp_len;
 448
 449         int wmm_last_param_set;
 450
 451         u8 use_4addr;
 452
 453         s16 p2p_noa_index;
 454
 455         /* Signal strength from the last Beacon frame in the current BSS. */
 456         int last_beacon_signal;
 457
 458         /*
 459          * Weighted average of the signal strength from Beacon frames in the
 460          * current BSS. This is in units of 1/16 of the signal unit to maintain
 461          * accuracy and to speed up calculations, i.e., the value need to be
 462          * divided by 16 to get the actual value.
 463          */
 464         int ave_beacon_signal;
 465
 466         /*
 467          * Number of Beacon frames used in ave_beacon_signal. This can be used
 468          * to avoid generating less reliable cqm events that would be based
 469          * only on couple of received frames.
 470          */
 471         unsigned int count_beacon_signal;
 472
 473         /*
 474          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 475          * that triggered a cqm event. 0 indicates that no event has been
 476          * generated for the current association.
 477          */
 478         int last_cqm_event_signal;
 479
 480         /*
 481          * State variables for keeping track of RSSI of the AP currently
 482          * connected to and informing driver when RSSI has gone
 483          * below/above a certain threshold.
 484          */
 485         int rssi_min_thold, rssi_max_thold;
 486         int last_ave_beacon_signal;
 487
 488         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 489         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 490         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 491         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 492 };
 493
 494 struct ieee80211_if_ibss {
 495         struct timer_list timer;
 496         struct work_struct csa_connection_drop_work;
 497
 498         unsigned long last_scan_completed;
 499
 500         u32 basic_rates;
 501
 502         bool fixed_bssid;
 503         bool fixed_channel;
 504         bool privacy;
 505
 506         bool control_port;
 507         bool userspace_handles_dfs;
 508
 509         u8 bssid[ETH_ALEN] __aligned(2);
 510         u8 ssid[IEEE80211_MAX_SSID_LEN];
 511         u8 ssid_len, ie_len;
 512         u8 *ie;
 513         struct cfg80211_chan_def chandef;
 514
 515         unsigned long ibss_join_req;
 516         /* probe response/beacon for IBSS */
 517         struct beacon_data __rcu *presp;
 518
 519         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 520         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 521
 522         spinlock_t incomplete_lock;
 523         struct list_head incomplete_stations;
 524
 525         enum {
 526                 IEEE80211_IBSS_MLME_SEARCH,
 527                 IEEE80211_IBSS_MLME_JOINED,
 528         } state;
 529 };
 530
 531 /**
 532  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 533  *
 534  * these declarations define the interface, which enables
 535  * vendor-specific mesh synchronization
 536  *
 537  */
 538 struct ieee802_11_elems;
 539 struct ieee80211_mesh_sync_ops {
 540         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 541                              u16 stype,
 542                              struct ieee80211_mgmt *mgmt,
 543                              struct ieee802_11_elems *elems,
 544                              struct ieee80211_rx_status *rx_status);
 545
 546         /* should be called with beacon_data under RCU read lock */
 547         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 548                             struct beacon_data *beacon);
 549         /* add other framework functions here */
 550 };
 551
 552 struct mesh_csa_settings {
 553         struct rcu_head rcu_head;
 554         struct cfg80211_csa_settings settings;
 555 };
 556
 557 struct ieee80211_if_mesh {
 558         struct timer_list housekeeping_timer;
 559         struct timer_list mesh_path_timer;
 560         struct timer_list mesh_path_root_timer;
 561
 562         unsigned long wrkq_flags;
 563         unsigned long mbss_changed;
 564
 565         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 566         size_t mesh_id_len;
 567         /* Active Path Selection Protocol Identifier */
 568         u8 mesh_pp_id;
 569         /* Active Path Selection Metric Identifier */
 570         u8 mesh_pm_id;
 571         /* Congestion Control Mode Identifier */
 572         u8 mesh_cc_id;
 573         /* Synchronization Protocol Identifier */
 574         u8 mesh_sp_id;
 575         /* Authentication Protocol Identifier */
 576         u8 mesh_auth_id;
 577         /* Local mesh Sequence Number */
 578         u32 sn;
 579         /* Last used PREQ ID */
 580         u32 preq_id;
 581         atomic_t mpaths;
 582         /* Timestamp of last SN update */
 583         unsigned long last_sn_update;
 584         /* Time when it's ok to send next PERR */
 585         unsigned long next_perr;
 586         /* Timestamp of last PREQ sent */
 587         unsigned long last_preq;
 588         struct mesh_rmc *rmc;
 589         spinlock_t mesh_preq_queue_lock;
 590         struct mesh_preq_queue preq_queue;
 591         int preq_queue_len;
 592         struct mesh_stats mshstats;
 593         struct mesh_config mshcfg;
 594         atomic_t estab_plinks;
 595         u32 mesh_seqnum;
 596         bool accepting_plinks;
 597         int num_gates;
 598         struct beacon_data __rcu *beacon;
 599         const u8 *ie;
 600         u8 ie_len;
 601         enum {
 602                 IEEE80211_MESH_SEC_NONE = 0x0,
 603                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 604                 IEEE80211_MESH_SEC_SECURED = 0x2,
 605         } security;
 606         bool user_mpm;
 607         /* Extensible Synchronization Framework */
 608         const struct ieee80211_mesh_sync_ops *sync_ops;
 609         s64 sync_offset_clockdrift_max;
 610         spinlock_t sync_offset_lock;
 611         bool adjusting_tbtt;
 612         /* mesh power save */
 613         enum nl80211_mesh_power_mode nonpeer_pm;
 614         int ps_peers_light_sleep;
 615         int ps_peers_deep_sleep;
 616         struct ps_data ps;
 617         /* Channel Switching Support */
 618         struct mesh_csa_settings __rcu *csa;
 619         bool chsw_init;
 620         u8 chsw_ttl;
 621         u16 pre_value;
 622
 623         /* offset from skb->data while building IE */
 624         int meshconf_offset;
 625 };
 626
 627 #ifdef CONFIG_MAC80211_MESH
 628 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 629         do { (msh)->mshstats.name++; } while (0)
 630 #else
 631 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 632         do { } while (0)
 633 #endif
 634
 635 /**
 636  * enum ieee80211_sub_if_data_flags - virtual interface flags
 637  *
 638  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 639  * @IEEE80211_SDATA_PROMISC: interface is promisc
 640  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 641  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 642  *      associated stations and deliver multicast frames both
 643  *      back to wireless media and to the local net stack.
 644  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 645  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 646  */
 647 enum ieee80211_sub_if_data_flags {
 648         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 649         IEEE80211_SDATA_PROMISC                 = BIT(1),
 650         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 651         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 652         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 653         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 654 };
 655
 656 /**
 657  * enum ieee80211_sdata_state_bits - virtual interface state bits
 658  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 659  *      mirrors netif_running() but is separate for interface type
 660  *      change handling while the interface is up
 661  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 662  *      mode, so queues are stopped
 663  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 664  *      to offchannel, reset when offchannel returns
 665  */
 666 enum ieee80211_sdata_state_bits {
 667         SDATA_STATE_RUNNING,
 668         SDATA_STATE_OFFCHANNEL,
 669         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 670 };
 671
 672 /**
 673  * enum ieee80211_chanctx_mode - channel context configuration mode
 674  *
 675  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 676  *      multiple interfaces
 677  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 678  *      only by a single interface. This can be used for example for
 679  *      non-fixed channel IBSS.
 680  */
 681 enum ieee80211_chanctx_mode {
 682         IEEE80211_CHANCTX_SHARED,
 683         IEEE80211_CHANCTX_EXCLUSIVE
 684 };
 685
 686 struct ieee80211_chanctx {
 687         struct list_head list;
 688         struct rcu_head rcu_head;
 689
 690         enum ieee80211_chanctx_mode mode;
 691         int refcount;
 692         bool driver_present;
 693
 694         struct ieee80211_chanctx_conf conf;
 695 };
 696
 697 struct mac80211_qos_map {
 698         struct cfg80211_qos_map qos_map;
 699         struct rcu_head rcu_head;
 700 };
 701
 702 struct ieee80211_sub_if_data {
 703         struct list_head list;
 704
 705         struct wireless_dev wdev;
 706
 707         /* keys */
 708         struct list_head key_list;
 709
 710         /* count for keys needing tailroom space allocation */
 711         int crypto_tx_tailroom_needed_cnt;
 712         int crypto_tx_tailroom_pending_dec;
 713         struct delayed_work dec_tailroom_needed_wk;
 714
 715         struct net_device *dev;
 716         struct ieee80211_local *local;
 717
 718         unsigned int flags;
 719
 720         unsigned long state;
 721
 722         int drop_unencrypted;
 723
 724         char name[IFNAMSIZ];
 725
 726         /* Fragment table for host-based reassembly */
 727         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 728         unsigned int fragment_next;
 729
 730         /* TID bitmap for NoAck policy */
 731         u16 noack_map;
 732
 733         /* bit field of ACM bits (BIT(802.1D tag)) */
 734         u8 wmm_acm;
 735
 736         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 737         struct ieee80211_key __rcu *default_unicast_key;
 738         struct ieee80211_key __rcu *default_multicast_key;
 739         struct ieee80211_key __rcu *default_mgmt_key;
 740
 741         u16 sequence_number;
 742         __be16 control_port_protocol;
 743         bool control_port_no_encrypt;
 744         int encrypt_headroom;
 745
 746         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 747         struct mac80211_qos_map __rcu *qos_map;
 748
 749         struct work_struct csa_finalize_work;
 750         int csa_counter_offset_beacon;
 751         int csa_counter_offset_presp;
 752         bool csa_radar_required;
 753         struct cfg80211_chan_def csa_chandef;
 754
 755         /* used to reconfigure hardware SM PS */
 756         struct work_struct recalc_smps;
 757
 758         struct work_struct work;
 759         struct sk_buff_head skb_queue;
 760
 761         u8 needed_rx_chains;
 762         enum ieee80211_smps_mode smps_mode;
 763
 764         int user_power_level; /* in dBm */
 765         int ap_power_level; /* in dBm */
 766
 767         bool radar_required;
 768         struct delayed_work dfs_cac_timer_work;
 769
 770         /*
 771          * AP this belongs to: self in AP mode and
 772          * corresponding AP in VLAN mode, NULL for
 773          * all others (might be needed later in IBSS)
 774          */
 775         struct ieee80211_if_ap *bss;
 776
 777         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 778         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 779
 780         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 781         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 782
 783         union {
 784                 struct ieee80211_if_ap ap;
 785                 struct ieee80211_if_wds wds;
 786                 struct ieee80211_if_vlan vlan;
 787                 struct ieee80211_if_managed mgd;
 788                 struct ieee80211_if_ibss ibss;
 789                 struct ieee80211_if_mesh mesh;
 790                 u32 mntr_flags;
 791         } u;
 792
 793 #ifdef CONFIG_MAC80211_DEBUGFS
 794         struct {
 795                 struct dentry *subdir_stations;
 796                 struct dentry *default_unicast_key;
 797                 struct dentry *default_multicast_key;
 798                 struct dentry *default_mgmt_key;
 799         } debugfs;
 800 #endif
 801
 802         /* must be last, dynamically sized area in this! */
 803         struct ieee80211_vif vif;
 804 };
 805
 806 static inline
 807 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 808 {
 809         return container_of(p, struct ieee80211_sub_if_data, vif);
 810 }
 811
 812 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 813         __acquires(&sdata->wdev.mtx)
 814 {
 815         mutex_lock(&sdata->wdev.mtx);
 816         __acquire(&sdata->wdev.mtx);
 817 }
 818
 819 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 820         __releases(&sdata->wdev.mtx)
 821 {
 822         mutex_unlock(&sdata->wdev.mtx);
 823         __release(&sdata->wdev.mtx);
 824 }
 825
 826 #define sdata_dereference(p, sdata) \
 827         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 828
 829 static inline void
 830 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 831 {
 832         lockdep_assert_held(&sdata->wdev.mtx);
 833 }
 834
 835 static inline enum ieee80211_band
 836 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 837 {
 838         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 839         struct ieee80211_chanctx_conf *chanctx_conf;
 840
 841         rcu_read_lock();
 842         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 843         if (!WARN_ON(!chanctx_conf))
 844                 band = chanctx_conf->def.chan->band;
 845         rcu_read_unlock();
 846
 847         return band;
 848 }
 849
 850 static inline int
 851 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 852 {
 853         switch (chandef->width) {
 854         case NL80211_CHAN_WIDTH_5:
 855                 return 2;
 856         case NL80211_CHAN_WIDTH_10:
 857                 return 1;
 858         default:
 859                 return 0;
 860         }
 861 }
 862
 863 static inline int
 864 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 865 {
 866         struct ieee80211_chanctx_conf *chanctx_conf;
 867         int shift = 0;
 868
 869         rcu_read_lock();
 870         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 871         if (chanctx_conf)
 872                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 873         rcu_read_unlock();
 874
 875         return shift;
 876 }
 877
 878 enum sdata_queue_type {
 879         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 880         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 881         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 882 };
 883
 884 enum {
 885         IEEE80211_RX_MSG        = 1,
 886         IEEE80211_TX_STATUS_MSG = 2,
 887 };
 888
 889 enum queue_stop_reason {
 890         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 891         IEEE80211_QUEUE_STOP_REASON_PS,
 892         IEEE80211_QUEUE_STOP_REASON_CSA,
 893         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 894         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 895         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 896         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
 897         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 898 };
 899
 900 #ifdef CONFIG_MAC80211_LEDS
 901 struct tpt_led_trigger {
 902         struct led_trigger trig;
 903         char name[32];
 904         const struct ieee80211_tpt_blink *blink_table;
 905         unsigned int blink_table_len;
 906         struct timer_list timer;
 907         unsigned long prev_traffic;
 908         unsigned long tx_bytes, rx_bytes;
 909         unsigned int active, want;
 910         bool running;
 911 };
 912 #endif
 913
 914 /*
 915  * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
 916  *
 917  * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
 918  * certain latency range (in Milliseconds). Each station that uses these
 919  * ranges will have bins to count the amount of frames received in that range.
 920  * The user can configure the ranges via debugfs.
 921  * If ranges is NULL then Tx latency statistics bins are disabled for all
 922  * stations.
 923  *
 924  * @n_ranges: number of ranges that are taken in account
 925  * @ranges: the ranges that the user requested or NULL if disabled.
 926  */
 927 struct ieee80211_tx_latency_bin_ranges {
 928         int n_ranges;
 929         u32 ranges[];
 930 };
 931
 932 /**
 933  * mac80211 scan flags - currently active scan mode
 934  *
 935  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 936  *      well be on the operating channel
 937  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 938  *      determine if we are on the operating channel or not
 939  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
 940  *      channel. This should not interrupt normal traffic.
 941  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 942  *      that the scan completed.
 943  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 944  *      a scan complete for an aborted scan.
 945  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
 946  *      cancelled.
 947  */
 948 enum {
 949         SCAN_SW_SCANNING,
 950         SCAN_HW_SCANNING,
 951         SCAN_ONCHANNEL_SCANNING,
 952         SCAN_COMPLETED,
 953         SCAN_ABORTED,
 954         SCAN_HW_CANCELLED,
 955 };
 956
 957 /**
 958  * enum mac80211_scan_state - scan state machine states
 959  *
 960  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 961  *      determines if we should keep on scanning or switch back to the
 962  *      operating channel
 963  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 964  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 965  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 966  *      send out data
 967  * @SCAN_RESUME: Resume the scan and scan the next channel
 968  * @SCAN_ABORT: Abort the scan and go back to operating channel
 969  */
 970 enum mac80211_scan_state {
 971         SCAN_DECISION,
 972         SCAN_SET_CHANNEL,
 973         SCAN_SEND_PROBE,
 974         SCAN_SUSPEND,
 975         SCAN_RESUME,
 976         SCAN_ABORT,
 977 };
 978
 979 struct ieee80211_local {
 980         /* embed the driver visible part.
 981          * don't cast (use the static inlines below), but we keep
 982          * it first anyway so they become a no-op */
 983         struct ieee80211_hw hw;
 984
 985         const struct ieee80211_ops *ops;
 986
 987         /*
 988          * private workqueue to mac80211. mac80211 makes this accessible
 989          * via ieee80211_queue_work()
 990          */
 991         struct workqueue_struct *workqueue;
 992
 993         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 994         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 995         spinlock_t queue_stop_reason_lock;
 996
 997         int open_count;
 998         int monitors, cooked_mntrs;
 999         /* number of interfaces with corresponding FIF_ flags */
1000         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1001             fif_probe_req;
1002         int probe_req_reg;
1003         unsigned int filter_flags; /* FIF_* */
1004
1005         bool wiphy_ciphers_allocated;
1006
1007         bool use_chanctx;
1008
1009         /* protects the aggregated multicast list and filter calls */
1010         spinlock_t filter_lock;
1011
1012         /* used for uploading changed mc list */
1013         struct work_struct reconfig_filter;
1014
1015         /* aggregated multicast list */
1016         struct netdev_hw_addr_list mc_list;
1017
1018         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1019
1020         /*
1021          * suspended is true if we finished all the suspend _and_ we have
1022          * not yet come up from resume. This is to be used by mac80211
1023          * to ensure driver sanity during suspend and mac80211's own
1024          * sanity. It can eventually be used for WoW as well.
1025          */
1026         bool suspended;
1027
1028         /*
1029          * Resuming is true while suspended, but when we're reprogramming the
1030          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1031          * again even though some other parts of the stack are still suspended
1032          * and we still drop received frames to avoid waking the stack.
1033          */
1034         bool resuming;
1035
1036         /*
1037          * quiescing is true during the suspend process _only_ to
1038          * ease timer cancelling etc.
1039          */
1040         bool quiescing;
1041
1042         /* device is started */
1043         bool started;
1044
1045         /* device is during a HW reconfig */
1046         bool in_reconfig;
1047
1048         /* wowlan is enabled -- don't reconfig on resume */
1049         bool wowlan;
1050
1051         /* DFS/radar detection is enabled */
1052         bool radar_detect_enabled;
1053         struct work_struct radar_detected_work;
1054
1055         /* number of RX chains the hardware has */
1056         u8 rx_chains;
1057
1058         int tx_headroom; /* required headroom for hardware/radiotap */
1059
1060         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1061          * added to skb_queue will be processed, but frames in
1062          * skb_queue_unreliable may be dropped if the total length of these
1063          * queues increases over the limit. */
1064 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1065         struct tasklet_struct tasklet;
1066         struct sk_buff_head skb_queue;
1067         struct sk_buff_head skb_queue_unreliable;
1068
1069         spinlock_t rx_path_lock;
1070
1071         /* Station data */
1072         /*
1073          * The mutex only protects the list, hash table and
1074          * counter, reads are done with RCU.
1075          */
1076         struct mutex sta_mtx;
1077         spinlock_t tim_lock;
1078         unsigned long num_sta;
1079         struct list_head sta_list;
1080         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1081         struct timer_list sta_cleanup;
1082         int sta_generation;
1083
1084         /*
1085          * Tx latency statistics parameters for all stations.
1086          * Can enable via debugfs (NULL when disabled).
1087          */
1088         struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1089
1090         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1091         struct tasklet_struct tx_pending_tasklet;
1092
1093         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1094
1095         /* number of interfaces with corresponding IFF_ flags */
1096         atomic_t iff_allmultis, iff_promiscs;
1097
1098         struct rate_control_ref *rate_ctrl;
1099
1100         struct crypto_cipher *wep_tx_tfm;
1101         struct crypto_cipher *wep_rx_tfm;
1102         u32 wep_iv;
1103
1104         /* see iface.c */
1105         struct list_head interfaces;
1106         struct mutex iflist_mtx;
1107
1108         /*
1109          * Key mutex, protects sdata's key_list and sta_info's
1110          * key pointers (write access, they're RCU.)
1111          */
1112         struct mutex key_mtx;
1113
1114         /* mutex for scan and work locking */
1115         struct mutex mtx;
1116
1117         /* Scanning and BSS list */
1118         unsigned long scanning;
1119         struct cfg80211_ssid scan_ssid;
1120         struct cfg80211_scan_request *int_scan_req;
1121         struct cfg80211_scan_request *scan_req, *hw_scan_req;
1122         struct cfg80211_chan_def scan_chandef;
1123         enum ieee80211_band hw_scan_band;
1124         int scan_channel_idx;
1125         int scan_ies_len;
1126         int hw_scan_ies_bufsize;
1127
1128         struct work_struct sched_scan_stopped_work;
1129         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1130         struct cfg80211_sched_scan_request *sched_scan_req;
1131
1132         unsigned long leave_oper_channel_time;
1133         enum mac80211_scan_state next_scan_state;
1134         struct delayed_work scan_work;
1135         struct ieee80211_sub_if_data __rcu *scan_sdata;
1136         /* For backward compatibility only -- do not use */
1137         struct cfg80211_chan_def _oper_chandef;
1138
1139         /* Temporary remain-on-channel for off-channel operations */
1140         struct ieee80211_channel *tmp_channel;
1141
1142         /* channel contexts */
1143         struct list_head chanctx_list;
1144         struct mutex chanctx_mtx;
1145
1146         /* SNMP counters */
1147         /* dot11CountersTable */
1148         u32 dot11TransmittedFragmentCount;
1149         u32 dot11MulticastTransmittedFrameCount;
1150         u32 dot11FailedCount;
1151         u32 dot11RetryCount;
1152         u32 dot11MultipleRetryCount;
1153         u32 dot11FrameDuplicateCount;
1154         u32 dot11ReceivedFragmentCount;
1155         u32 dot11MulticastReceivedFrameCount;
1156         u32 dot11TransmittedFrameCount;
1157
1158 #ifdef CONFIG_MAC80211_LEDS
1159         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1160         struct tpt_led_trigger *tpt_led_trigger;
1161         char tx_led_name[32], rx_led_name[32],
1162              assoc_led_name[32], radio_led_name[32];
1163 #endif
1164
1165 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1166         /* TX/RX handler statistics */
1167         unsigned int tx_handlers_drop;
1168         unsigned int tx_handlers_queued;
1169         unsigned int tx_handlers_drop_unencrypted;
1170         unsigned int tx_handlers_drop_fragment;
1171         unsigned int tx_handlers_drop_wep;
1172         unsigned int tx_handlers_drop_not_assoc;
1173         unsigned int tx_handlers_drop_unauth_port;
1174         unsigned int rx_handlers_drop;
1175         unsigned int rx_handlers_queued;
1176         unsigned int rx_handlers_drop_nullfunc;
1177         unsigned int rx_handlers_drop_defrag;
1178         unsigned int rx_handlers_drop_short;
1179         unsigned int tx_expand_skb_head;
1180         unsigned int tx_expand_skb_head_cloned;
1181         unsigned int rx_expand_skb_head;
1182         unsigned int rx_expand_skb_head2;
1183         unsigned int rx_handlers_fragments;
1184         unsigned int tx_status_drop;
1185 #define I802_DEBUG_INC(c) (c)++
1186 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1187 #define I802_DEBUG_INC(c) do { } while (0)
1188 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1189
1190
1191         int total_ps_buffered; /* total number of all buffered unicast and
1192                                 * multicast packets for power saving stations
1193                                 */
1194
1195         bool pspolling;
1196         bool offchannel_ps_enabled;
1197         /*
1198          * PS can only be enabled when we have exactly one managed
1199          * interface (and monitors) in PS, this then points there.
1200          */
1201         struct ieee80211_sub_if_data *ps_sdata;
1202         struct work_struct dynamic_ps_enable_work;
1203         struct work_struct dynamic_ps_disable_work;
1204         struct timer_list dynamic_ps_timer;
1205         struct notifier_block network_latency_notifier;
1206         struct notifier_block ifa_notifier;
1207         struct notifier_block ifa6_notifier;
1208
1209         /*
1210          * The dynamic ps timeout configured from user space via WEXT -
1211          * this will override whatever chosen by mac80211 internally.
1212          */
1213         int dynamic_ps_forced_timeout;
1214
1215         int user_power_level; /* in dBm, for all interfaces */
1216
1217         enum ieee80211_smps_mode smps_mode;
1218
1219         struct work_struct restart_work;
1220
1221 #ifdef CONFIG_MAC80211_DEBUGFS
1222         struct local_debugfsdentries {
1223                 struct dentry *rcdir;
1224                 struct dentry *keys;
1225         } debugfs;
1226 #endif
1227
1228         /*
1229          * Remain-on-channel support
1230          */
1231         struct list_head roc_list;
1232         struct work_struct hw_roc_start, hw_roc_done;
1233         unsigned long hw_roc_start_time;
1234         u64 roc_cookie_counter;
1235
1236         struct idr ack_status_frames;
1237         spinlock_t ack_status_lock;
1238
1239         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1240
1241         /* virtual monitor interface */
1242         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1243         struct cfg80211_chan_def monitor_chandef;
1244 };
1245
1246 static inline struct ieee80211_sub_if_data *
1247 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1248 {
1249         return netdev_priv(dev);
1250 }
1251
1252 static inline struct ieee80211_sub_if_data *
1253 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1254 {
1255         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1256 }
1257
1258 /* this struct represents 802.11n's RA/TID combination */
1259 struct ieee80211_ra_tid {
1260         u8 ra[ETH_ALEN];
1261         u16 tid;
1262 };
1263
1264 /* this struct holds the value parsing from channel switch IE  */
1265 struct ieee80211_csa_ie {
1266         struct cfg80211_chan_def chandef;
1267         u8 mode;
1268         u8 count;
1269         u8 ttl;
1270         u16 pre_value;
1271 };
1272
1273 /* Parsed Information Elements */
1274 struct ieee802_11_elems {
1275         const u8 *ie_start;
1276         size_t total_len;
1277
1278         /* pointers to IEs */
1279         const u8 *ssid;
1280         const u8 *supp_rates;
1281         const u8 *ds_params;
1282         const struct ieee80211_tim_ie *tim;
1283         const u8 *challenge;
1284         const u8 *rsn;
1285         const u8 *erp_info;
1286         const u8 *ext_supp_rates;
1287         const u8 *wmm_info;
1288         const u8 *wmm_param;
1289         const struct ieee80211_ht_cap *ht_cap_elem;
1290         const struct ieee80211_ht_operation *ht_operation;
1291         const struct ieee80211_vht_cap *vht_cap_elem;
1292         const struct ieee80211_vht_operation *vht_operation;
1293         const struct ieee80211_meshconf_ie *mesh_config;
1294         const u8 *mesh_id;
1295         const u8 *peering;
1296         const __le16 *awake_window;
1297         const u8 *preq;
1298         const u8 *prep;
1299         const u8 *perr;
1300         const struct ieee80211_rann_ie *rann;
1301         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1302         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1303         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1304         const u8 *country_elem;
1305         const u8 *pwr_constr_elem;
1306         const struct ieee80211_timeout_interval_ie *timeout_int;
1307         const u8 *opmode_notif;
1308         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1309         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1310
1311         /* length of them, respectively */
1312         u8 ssid_len;
1313         u8 supp_rates_len;
1314         u8 tim_len;
1315         u8 challenge_len;
1316         u8 rsn_len;
1317         u8 ext_supp_rates_len;
1318         u8 wmm_info_len;
1319         u8 wmm_param_len;
1320         u8 mesh_id_len;
1321         u8 peering_len;
1322         u8 preq_len;
1323         u8 prep_len;
1324         u8 perr_len;
1325         u8 country_elem_len;
1326
1327         /* whether a parse error occurred while retrieving these elements */
1328         bool parse_error;
1329 };
1330
1331 static inline struct ieee80211_local *hw_to_local(
1332         struct ieee80211_hw *hw)
1333 {
1334         return container_of(hw, struct ieee80211_local, hw);
1335 }
1336
1337
1338 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1339 {
1340         return ether_addr_equal(raddr, addr) ||
1341                is_broadcast_ether_addr(raddr);
1342 }
1343
1344 static inline bool
1345 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1346 {
1347         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1348                      status->flag & RX_FLAG_MACTIME_END);
1349         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1350 }
1351
1352 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1353                                      struct ieee80211_rx_status *status,
1354                                      unsigned int mpdu_len,
1355                                      unsigned int mpdu_offset);
1356 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1357 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1358 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1359                                       u32 changed);
1360 void ieee80211_configure_filter(struct ieee80211_local *local);
1361 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1362
1363 /* STA code */
1364 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1365 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1366                        struct cfg80211_auth_request *req);
1367 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1368                         struct cfg80211_assoc_request *req);
1369 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1370                          struct cfg80211_deauth_request *req);
1371 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1372                            struct cfg80211_disassoc_request *req);
1373 void ieee80211_send_pspoll(struct ieee80211_local *local,
1374                            struct ieee80211_sub_if_data *sdata);
1375 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1376 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1377 int ieee80211_max_network_latency(struct notifier_block *nb,
1378                                   unsigned long data, void *dummy);
1379 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1380 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1381 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1382                                   struct sk_buff *skb);
1383 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1384 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1385 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1386 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1387                                   __le16 fc, bool acked);
1388 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1389
1390 /* IBSS code */
1391 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1392 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1393 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1394                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1395 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1396                         struct cfg80211_ibss_params *params);
1397 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1398 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1399 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1400                                    struct sk_buff *skb);
1401 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1402                               struct cfg80211_csa_settings *csa_settings);
1403 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1404 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1405
1406 /* mesh code */
1407 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1408 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1409                                    struct sk_buff *skb);
1410 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1411                               struct cfg80211_csa_settings *csa_settings,
1412                               bool csa_action);
1413 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1414
1415 /* scan/BSS handling */
1416 void ieee80211_scan_work(struct work_struct *work);
1417 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1418                                 const u8 *ssid, u8 ssid_len,
1419                                 struct ieee80211_channel *chan,
1420                                 enum nl80211_bss_scan_width scan_width);
1421 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1422                            struct cfg80211_scan_request *req);
1423 void ieee80211_scan_cancel(struct ieee80211_local *local);
1424 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1425 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1426
1427 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1428 struct ieee80211_bss *
1429 ieee80211_bss_info_update(struct ieee80211_local *local,
1430                           struct ieee80211_rx_status *rx_status,
1431                           struct ieee80211_mgmt *mgmt,
1432                           size_t len,
1433                           struct ieee802_11_elems *elems,
1434                           struct ieee80211_channel *channel);
1435 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1436                           struct ieee80211_bss *bss);
1437
1438 /* scheduled scan handling */
1439 int
1440 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1441                                      struct cfg80211_sched_scan_request *req);
1442 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1443                                        struct cfg80211_sched_scan_request *req);
1444 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1445 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1446
1447 /* off-channel helpers */
1448 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1449 void ieee80211_offchannel_return(struct ieee80211_local *local);
1450 void ieee80211_roc_setup(struct ieee80211_local *local);
1451 void ieee80211_start_next_roc(struct ieee80211_local *local);
1452 void ieee80211_roc_purge(struct ieee80211_local *local,
1453                          struct ieee80211_sub_if_data *sdata);
1454 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1455 void ieee80211_sw_roc_work(struct work_struct *work);
1456 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1457
1458 /* channel switch handling */
1459 void ieee80211_csa_finalize_work(struct work_struct *work);
1460 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1461                              struct cfg80211_csa_settings *params);
1462
1463 /* interface handling */
1464 int ieee80211_iface_init(void);
1465 void ieee80211_iface_exit(void);
1466 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1467                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1468                      struct vif_params *params);
1469 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1470                              enum nl80211_iftype type);
1471 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1472 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1473 u32 ieee80211_idle_off(struct ieee80211_local *local);
1474 void ieee80211_recalc_idle(struct ieee80211_local *local);
1475 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1476                                     const int offset);
1477 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1478 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1479 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1480 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1481
1482 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1483 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1484
1485 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1486 {
1487         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1488 }
1489
1490 /* tx handling */
1491 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1492 void ieee80211_tx_pending(unsigned long data);
1493 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1494                                          struct net_device *dev);
1495 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1496                                        struct net_device *dev);
1497 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1498                               struct sk_buff_head *skbs);
1499
1500 /* HT */
1501 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1502                                      struct ieee80211_sta_ht_cap *ht_cap);
1503 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1504                                        struct ieee80211_supported_band *sband,
1505                                        const struct ieee80211_ht_cap *ht_cap_ie,
1506                                        struct sta_info *sta);
1507 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1508                           const u8 *da, u16 tid,
1509                           u16 initiator, u16 reason_code);
1510 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1511                                enum ieee80211_smps_mode smps, const u8 *da,
1512                                const u8 *bssid);
1513 void ieee80211_request_smps_ap_work(struct work_struct *work);
1514 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1515 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1516                                    enum ieee80211_smps_mode smps_mode_new);
1517
1518 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1519                                      u16 initiator, u16 reason, bool stop);
1520 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1521                                     u16 initiator, u16 reason, bool stop);
1522 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1523                                          enum ieee80211_agg_stop_reason reason);
1524 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1525                              struct sta_info *sta,
1526                              struct ieee80211_mgmt *mgmt, size_t len);
1527 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1528                                   struct sta_info *sta,
1529                                   struct ieee80211_mgmt *mgmt,
1530                                   size_t len);
1531 void ieee80211_process_addba_request(struct ieee80211_local *local,
1532                                      struct sta_info *sta,
1533                                      struct ieee80211_mgmt *mgmt,
1534                                      size_t len);
1535
1536 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1537                                    enum ieee80211_agg_stop_reason reason);
1538 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1539                                     enum ieee80211_agg_stop_reason reason);
1540 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1541 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1542 void ieee80211_ba_session_work(struct work_struct *work);
1543 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1544 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1545
1546 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1547
1548 /* VHT */
1549 void
1550 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1551                                     struct ieee80211_supported_band *sband,
1552                                     const struct ieee80211_vht_cap *vht_cap_ie,
1553                                     struct sta_info *sta);
1554 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1555 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1556 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1557                                  struct sta_info *sta, u8 opmode,
1558                                  enum ieee80211_band band, bool nss_only);
1559 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1560                                       struct ieee80211_sta_vht_cap *vht_cap);
1561
1562 /* Spectrum management */
1563 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1564                                        struct ieee80211_mgmt *mgmt,
1565                                        size_t len);
1566 /**
1567  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1568  * @sdata: the sdata of the interface which has received the frame
1569  * @elems: parsed 802.11 elements received with the frame
1570  * @beacon: indicates if the frame was a beacon or probe response
1571  * @current_band: indicates the current band
1572  * @sta_flags: contains information about own capabilities and restrictions
1573  *      to decide which channel switch announcements can be accepted. Only the
1574  *      following subset of &enum ieee80211_sta_flags are evaluated:
1575  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1576  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1577  *      %IEEE80211_STA_DISABLE_160MHZ.
1578  * @bssid: the currently connected bssid (for reporting)
1579  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1580         All of them will be filled with if success only.
1581  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1582  */
1583 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1584                                  struct ieee802_11_elems *elems, bool beacon,
1585                                  enum ieee80211_band current_band,
1586                                  u32 sta_flags, u8 *bssid,
1587                                  struct ieee80211_csa_ie *csa_ie);
1588
1589 /* Suspend/resume and hw reconfiguration */
1590 int ieee80211_reconfig(struct ieee80211_local *local);
1591 void ieee80211_stop_device(struct ieee80211_local *local);
1592
1593 int __ieee80211_suspend(struct ieee80211_hw *hw,
1594                         struct cfg80211_wowlan *wowlan);
1595
1596 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1597 {
1598         struct ieee80211_local *local = hw_to_local(hw);
1599
1600         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1601                 "%s: resume with hardware scan still in progress\n",
1602                 wiphy_name(hw->wiphy));
1603
1604         return ieee80211_reconfig(hw_to_local(hw));
1605 }
1606
1607 /* utility functions/constants */
1608 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1609 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1610                         enum nl80211_iftype type);
1611 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1612                              int rate, int erp, int short_preamble,
1613                              int shift);
1614 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1615                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1616                                      gfp_t gfp);
1617 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1618                                bool bss_notify);
1619 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1620                     enum ieee80211_band band);
1621
1622 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1623                                  struct sk_buff *skb, int tid,
1624                                  enum ieee80211_band band);
1625
1626 static inline void
1627 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1628                           struct sk_buff *skb, int tid,
1629                           enum ieee80211_band band)
1630 {
1631         rcu_read_lock();
1632         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1633         rcu_read_unlock();
1634 }
1635
1636 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1637                                         struct sk_buff *skb, int tid)
1638 {
1639         struct ieee80211_chanctx_conf *chanctx_conf;
1640
1641         rcu_read_lock();
1642         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1643         if (WARN_ON(!chanctx_conf)) {
1644                 rcu_read_unlock();
1645                 kfree_skb(skb);
1646                 return;
1647         }
1648
1649         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1650                                     chanctx_conf->def.chan->band);
1651         rcu_read_unlock();
1652 }
1653
1654 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1655                                     struct sk_buff *skb)
1656 {
1657         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1658         ieee80211_tx_skb_tid(sdata, skb, 7);
1659 }
1660
1661 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1662                                struct ieee802_11_elems *elems,
1663                                u64 filter, u32 crc);
1664 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1665                                           bool action,
1666                                           struct ieee802_11_elems *elems)
1667 {
1668         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1669 }
1670
1671 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1672 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1673 void ieee80211_dynamic_ps_timer(unsigned long data);
1674 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1675                              struct ieee80211_sub_if_data *sdata,
1676                              int powersave);
1677 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1678                              struct ieee80211_hdr *hdr);
1679 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1680                              struct ieee80211_hdr *hdr, bool ack);
1681
1682 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1683                                      unsigned long queues,
1684                                      enum queue_stop_reason reason);
1685 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1686                                      unsigned long queues,
1687                                      enum queue_stop_reason reason);
1688 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1689                                     enum queue_stop_reason reason);
1690 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1691                                     enum queue_stop_reason reason);
1692 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1693 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1694                                struct sk_buff *skb);
1695 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1696                                    struct sk_buff_head *skbs,
1697                                    void (*fn)(void *data), void *data);
1698 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1699                                               struct sk_buff_head *skbs)
1700 {
1701         ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1702 }
1703 void ieee80211_flush_queues(struct ieee80211_local *local,
1704                             struct ieee80211_sub_if_data *sdata);
1705
1706 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1707                          u16 transaction, u16 auth_alg, u16 status,
1708                          const u8 *extra, size_t extra_len, const u8 *bssid,
1709                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1710                          u32 tx_flags);
1711 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1712                                     const u8 *bssid, u16 stype, u16 reason,
1713                                     bool send_frame, u8 *frame_buf);
1714 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1715                              size_t buffer_len, const u8 *ie, size_t ie_len,
1716                              enum ieee80211_band band, u32 rate_mask,
1717                              struct cfg80211_chan_def *chandef);
1718 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1719                                           u8 *dst, u32 ratemask,
1720                                           struct ieee80211_channel *chan,
1721                                           const u8 *ssid, size_t ssid_len,
1722                                           const u8 *ie, size_t ie_len,
1723                                           bool directed);
1724 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1725                               const u8 *ssid, size_t ssid_len,
1726                               const u8 *ie, size_t ie_len,
1727                               u32 ratemask, bool directed, u32 tx_flags,
1728                               struct ieee80211_channel *channel, bool scan);
1729
1730 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1731                             struct ieee802_11_elems *elems,
1732                             enum ieee80211_band band, u32 *basic_rates);
1733 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1734                                  enum ieee80211_smps_mode smps_mode);
1735 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1736                                 enum ieee80211_smps_mode smps_mode);
1737 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1738 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1739
1740 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1741                           const u8 *ids, int n_ids, size_t offset);
1742 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1743 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1744                               u16 cap);
1745 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1746                                const struct cfg80211_chan_def *chandef,
1747                                u16 prot_mode);
1748 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1749                                u32 cap);
1750 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1751                              const struct ieee80211_supported_band *sband,
1752                              const u8 *srates, int srates_len, u32 *rates);
1753 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1754                             struct sk_buff *skb, bool need_basic,
1755                             enum ieee80211_band band);
1756 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1757                                 struct sk_buff *skb, bool need_basic,
1758                                 enum ieee80211_band band);
1759
1760 /* channel management */
1761 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1762                                   const struct ieee80211_ht_operation *ht_oper,
1763                                   struct cfg80211_chan_def *chandef);
1764 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1765
1766 int __must_check
1767 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1768                           const struct cfg80211_chan_def *chandef,
1769                           enum ieee80211_chanctx_mode mode);
1770 int __must_check
1771 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1772                                const struct cfg80211_chan_def *chandef,
1773                                u32 *changed);
1774 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1775 int __must_check
1776 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1777                              u32 *changed);
1778 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1779 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1780 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1781                                          bool clear);
1782
1783 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1784                                    struct ieee80211_chanctx *chanctx);
1785 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1786                                       struct ieee80211_chanctx *ctx);
1787
1788 void ieee80211_dfs_cac_timer(unsigned long data);
1789 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1790 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1791 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1792 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1793                               struct cfg80211_csa_settings *csa_settings);
1794
1795 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1796 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1797 const struct ieee80211_cipher_scheme *
1798 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1799                  enum nl80211_iftype iftype);
1800 int ieee80211_cs_headroom(struct ieee80211_local *local,
1801                           struct cfg80211_crypto_settings *crypto,
1802                           enum nl80211_iftype iftype);
1803 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1804                            struct ieee80211_sub_if_data *sdata);
1805
1806 #ifdef CONFIG_MAC80211_NOINLINE
1807 #define debug_noinline noinline
1808 #else
1809 #define debug_noinline
1810 #endif
1811
1812 #endif /* IEEE80211_I_H */