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 rcu_head rcu_head;
 236 };
 237
 238 struct probe_resp {
 239         struct rcu_head rcu_head;
 240         int len;
 241         u8 data[0];
 242 };
 243
 244 struct ps_data {
 245         /* yes, this looks ugly, but guarantees that we can later use
 246          * bitmap_empty :)
 247          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 248         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 249         struct sk_buff_head bc_buf;
 250         atomic_t num_sta_ps; /* number of stations in PS mode */
 251         int dtim_count;
 252         bool dtim_bc_mc;
 253 };
 254
 255 struct ieee80211_if_ap {
 256         struct beacon_data __rcu *beacon;
 257         struct probe_resp __rcu *probe_resp;
 258
 259         /* to be used after channel switch. */
 260         struct cfg80211_beacon_data *next_beacon;
 261         struct list_head vlans;
 262
 263         struct ps_data ps;
 264         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 265         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 266                          driver_smps_mode; /* smps mode request */
 267
 268         struct work_struct request_smps_work;
 269 };
 270
 271 struct ieee80211_if_wds {
 272         struct sta_info *sta;
 273         u8 remote_addr[ETH_ALEN];
 274 };
 275
 276 struct ieee80211_if_vlan {
 277         struct list_head list;
 278
 279         /* used for all tx if the VLAN is configured to 4-addr mode */
 280         struct sta_info __rcu *sta;
 281 };
 282
 283 struct mesh_stats {
 284         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 285         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 286         __u32 fwded_frames;             /* Mesh total forwarded frames */
 287         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 288         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 289         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 290 };
 291
 292 #define PREQ_Q_F_START          0x1
 293 #define PREQ_Q_F_REFRESH        0x2
 294 struct mesh_preq_queue {
 295         struct list_head list;
 296         u8 dst[ETH_ALEN];
 297         u8 flags;
 298 };
 299
 300 #if HZ/100 == 0
 301 #define IEEE80211_ROC_MIN_LEFT  1
 302 #else
 303 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 304 #endif
 305
 306 struct ieee80211_roc_work {
 307         struct list_head list;
 308         struct list_head dependents;
 309
 310         struct delayed_work work;
 311
 312         struct ieee80211_sub_if_data *sdata;
 313
 314         struct ieee80211_channel *chan;
 315
 316         bool started, abort, hw_begun, notified;
 317         bool to_be_freed;
 318
 319         unsigned long hw_start_time;
 320
 321         u32 duration, req_duration;
 322         struct sk_buff *frame;
 323         u64 cookie, mgmt_tx_cookie;
 324         enum ieee80211_roc_type type;
 325 };
 326
 327 /* flags used in struct ieee80211_if_managed.flags */
 328 enum ieee80211_sta_flags {
 329         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 330         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 331         IEEE80211_STA_DISABLE_HT        = BIT(4),
 332         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 333         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 334         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 335         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 336         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 337         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 338         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 339         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 340         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 341         IEEE80211_STA_DISABLE_WMM       = BIT(14),
 342 };
 343
 344 struct ieee80211_mgd_auth_data {
 345         struct cfg80211_bss *bss;
 346         unsigned long timeout;
 347         int tries;
 348         u16 algorithm, expected_transaction;
 349
 350         u8 key[WLAN_KEY_LEN_WEP104];
 351         u8 key_len, key_idx;
 352         bool done;
 353         bool timeout_started;
 354
 355         u16 sae_trans, sae_status;
 356         size_t data_len;
 357         u8 data[];
 358 };
 359
 360 struct ieee80211_mgd_assoc_data {
 361         struct cfg80211_bss *bss;
 362         const u8 *supp_rates;
 363
 364         unsigned long timeout;
 365         int tries;
 366
 367         u16 capability;
 368         u8 prev_bssid[ETH_ALEN];
 369         u8 ssid[IEEE80211_MAX_SSID_LEN];
 370         u8 ssid_len;
 371         u8 supp_rates_len;
 372         bool wmm, uapsd;
 373         bool need_beacon;
 374         bool synced;
 375         bool timeout_started;
 376
 377         u8 ap_ht_param;
 378
 379         struct ieee80211_vht_cap ap_vht_cap;
 380
 381         size_t ie_len;
 382         u8 ie[];
 383 };
 384
 385 struct ieee80211_if_managed {
 386         struct timer_list timer;
 387         struct timer_list conn_mon_timer;
 388         struct timer_list bcn_mon_timer;
 389         struct timer_list chswitch_timer;
 390         struct work_struct monitor_work;
 391         struct work_struct chswitch_work;
 392         struct work_struct beacon_connection_loss_work;
 393         struct work_struct csa_connection_drop_work;
 394
 395         unsigned long beacon_timeout;
 396         unsigned long probe_timeout;
 397         int probe_send_count;
 398         bool nullfunc_failed;
 399         bool connection_loss;
 400
 401         struct cfg80211_bss *associated;
 402         struct ieee80211_mgd_auth_data *auth_data;
 403         struct ieee80211_mgd_assoc_data *assoc_data;
 404
 405         u8 bssid[ETH_ALEN];
 406
 407         u16 aid;
 408
 409         bool powersave; /* powersave requested for this iface */
 410         bool broken_ap; /* AP is broken -- turn off powersave */
 411         bool have_beacon;
 412         u8 dtim_period;
 413         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 414                                  driver_smps_mode; /* smps mode request */
 415
 416         struct work_struct request_smps_work;
 417
 418         unsigned int flags;
 419
 420         bool beacon_crc_valid;
 421         u32 beacon_crc;
 422
 423         bool status_acked;
 424         bool status_received;
 425         __le16 status_fc;
 426
 427         enum {
 428                 IEEE80211_MFP_DISABLED,
 429                 IEEE80211_MFP_OPTIONAL,
 430                 IEEE80211_MFP_REQUIRED
 431         } mfp; /* management frame protection */
 432
 433         /*
 434          * Bitmask of enabled u-apsd queues,
 435          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 436          * to take effect.
 437          */
 438         unsigned int uapsd_queues;
 439
 440         /*
 441          * Maximum number of buffered frames AP can deliver during a
 442          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 443          * Needs a new association to take effect.
 444          */
 445         unsigned int uapsd_max_sp_len;
 446
 447         int wmm_last_param_set;
 448
 449         u8 use_4addr;
 450
 451         s16 p2p_noa_index;
 452
 453         /* Signal strength from the last Beacon frame in the current BSS. */
 454         int last_beacon_signal;
 455
 456         /*
 457          * Weighted average of the signal strength from Beacon frames in the
 458          * current BSS. This is in units of 1/16 of the signal unit to maintain
 459          * accuracy and to speed up calculations, i.e., the value need to be
 460          * divided by 16 to get the actual value.
 461          */
 462         int ave_beacon_signal;
 463
 464         /*
 465          * Number of Beacon frames used in ave_beacon_signal. This can be used
 466          * to avoid generating less reliable cqm events that would be based
 467          * only on couple of received frames.
 468          */
 469         unsigned int count_beacon_signal;
 470
 471         /*
 472          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 473          * that triggered a cqm event. 0 indicates that no event has been
 474          * generated for the current association.
 475          */
 476         int last_cqm_event_signal;
 477
 478         /*
 479          * State variables for keeping track of RSSI of the AP currently
 480          * connected to and informing driver when RSSI has gone
 481          * below/above a certain threshold.
 482          */
 483         int rssi_min_thold, rssi_max_thold;
 484         int last_ave_beacon_signal;
 485
 486         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 487         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 488         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 489         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 490 };
 491
 492 struct ieee80211_if_ibss {
 493         struct timer_list timer;
 494         struct work_struct csa_connection_drop_work;
 495
 496         unsigned long last_scan_completed;
 497
 498         u32 basic_rates;
 499
 500         bool fixed_bssid;
 501         bool fixed_channel;
 502         bool privacy;
 503
 504         bool control_port;
 505         bool userspace_handles_dfs;
 506
 507         u8 bssid[ETH_ALEN] __aligned(2);
 508         u8 ssid[IEEE80211_MAX_SSID_LEN];
 509         u8 ssid_len, ie_len;
 510         u8 *ie;
 511         struct cfg80211_chan_def chandef;
 512
 513         unsigned long ibss_join_req;
 514         /* probe response/beacon for IBSS */
 515         struct beacon_data __rcu *presp;
 516
 517         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 518         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 519
 520         spinlock_t incomplete_lock;
 521         struct list_head incomplete_stations;
 522
 523         enum {
 524                 IEEE80211_IBSS_MLME_SEARCH,
 525                 IEEE80211_IBSS_MLME_JOINED,
 526         } state;
 527 };
 528
 529 /**
 530  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 531  *
 532  * these declarations define the interface, which enables
 533  * vendor-specific mesh synchronization
 534  *
 535  */
 536 struct ieee802_11_elems;
 537 struct ieee80211_mesh_sync_ops {
 538         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 539                              u16 stype,
 540                              struct ieee80211_mgmt *mgmt,
 541                              struct ieee802_11_elems *elems,
 542                              struct ieee80211_rx_status *rx_status);
 543         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
 544         /* add other framework functions here */
 545 };
 546
 547 struct mesh_csa_settings {
 548         struct rcu_head rcu_head;
 549         struct cfg80211_csa_settings settings;
 550 };
 551
 552 struct ieee80211_if_mesh {
 553         struct timer_list housekeeping_timer;
 554         struct timer_list mesh_path_timer;
 555         struct timer_list mesh_path_root_timer;
 556
 557         unsigned long wrkq_flags;
 558         unsigned long mbss_changed;
 559
 560         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 561         size_t mesh_id_len;
 562         /* Active Path Selection Protocol Identifier */
 563         u8 mesh_pp_id;
 564         /* Active Path Selection Metric Identifier */
 565         u8 mesh_pm_id;
 566         /* Congestion Control Mode Identifier */
 567         u8 mesh_cc_id;
 568         /* Synchronization Protocol Identifier */
 569         u8 mesh_sp_id;
 570         /* Authentication Protocol Identifier */
 571         u8 mesh_auth_id;
 572         /* Local mesh Sequence Number */
 573         u32 sn;
 574         /* Last used PREQ ID */
 575         u32 preq_id;
 576         atomic_t mpaths;
 577         /* Timestamp of last SN update */
 578         unsigned long last_sn_update;
 579         /* Time when it's ok to send next PERR */
 580         unsigned long next_perr;
 581         /* Timestamp of last PREQ sent */
 582         unsigned long last_preq;
 583         struct mesh_rmc *rmc;
 584         spinlock_t mesh_preq_queue_lock;
 585         struct mesh_preq_queue preq_queue;
 586         int preq_queue_len;
 587         struct mesh_stats mshstats;
 588         struct mesh_config mshcfg;
 589         atomic_t estab_plinks;
 590         u32 mesh_seqnum;
 591         bool accepting_plinks;
 592         int num_gates;
 593         struct beacon_data __rcu *beacon;
 594         const u8 *ie;
 595         u8 ie_len;
 596         enum {
 597                 IEEE80211_MESH_SEC_NONE = 0x0,
 598                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 599                 IEEE80211_MESH_SEC_SECURED = 0x2,
 600         } security;
 601         bool user_mpm;
 602         /* Extensible Synchronization Framework */
 603         const struct ieee80211_mesh_sync_ops *sync_ops;
 604         s64 sync_offset_clockdrift_max;
 605         spinlock_t sync_offset_lock;
 606         bool adjusting_tbtt;
 607         /* mesh power save */
 608         enum nl80211_mesh_power_mode nonpeer_pm;
 609         int ps_peers_light_sleep;
 610         int ps_peers_deep_sleep;
 611         struct ps_data ps;
 612         /* Channel Switching Support */
 613         struct mesh_csa_settings __rcu *csa;
 614         bool chsw_init;
 615         u8 chsw_ttl;
 616         u16 pre_value;
 617 };
 618
 619 #ifdef CONFIG_MAC80211_MESH
 620 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 621         do { (msh)->mshstats.name++; } while (0)
 622 #else
 623 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 624         do { } while (0)
 625 #endif
 626
 627 /**
 628  * enum ieee80211_sub_if_data_flags - virtual interface flags
 629  *
 630  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 631  * @IEEE80211_SDATA_PROMISC: interface is promisc
 632  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 633  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 634  *      associated stations and deliver multicast frames both
 635  *      back to wireless media and to the local net stack.
 636  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 637  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 638  */
 639 enum ieee80211_sub_if_data_flags {
 640         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 641         IEEE80211_SDATA_PROMISC                 = BIT(1),
 642         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 643         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 644         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 645         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 646 };
 647
 648 /**
 649  * enum ieee80211_sdata_state_bits - virtual interface state bits
 650  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 651  *      mirrors netif_running() but is separate for interface type
 652  *      change handling while the interface is up
 653  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 654  *      mode, so queues are stopped
 655  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 656  *      to offchannel, reset when offchannel returns
 657  */
 658 enum ieee80211_sdata_state_bits {
 659         SDATA_STATE_RUNNING,
 660         SDATA_STATE_OFFCHANNEL,
 661         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 662 };
 663
 664 /**
 665  * enum ieee80211_chanctx_mode - channel context configuration mode
 666  *
 667  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 668  *      multiple interfaces
 669  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 670  *      only by a single interface. This can be used for example for
 671  *      non-fixed channel IBSS.
 672  */
 673 enum ieee80211_chanctx_mode {
 674         IEEE80211_CHANCTX_SHARED,
 675         IEEE80211_CHANCTX_EXCLUSIVE
 676 };
 677
 678 struct ieee80211_chanctx {
 679         struct list_head list;
 680         struct rcu_head rcu_head;
 681
 682         enum ieee80211_chanctx_mode mode;
 683         int refcount;
 684         bool driver_present;
 685
 686         struct ieee80211_chanctx_conf conf;
 687 };
 688
 689 struct ieee80211_sub_if_data {
 690         struct list_head list;
 691
 692         struct wireless_dev wdev;
 693
 694         /* keys */
 695         struct list_head key_list;
 696
 697         /* count for keys needing tailroom space allocation */
 698         int crypto_tx_tailroom_needed_cnt;
 699         int crypto_tx_tailroom_pending_dec;
 700         struct delayed_work dec_tailroom_needed_wk;
 701
 702         struct net_device *dev;
 703         struct ieee80211_local *local;
 704
 705         unsigned int flags;
 706
 707         unsigned long state;
 708
 709         int drop_unencrypted;
 710
 711         char name[IFNAMSIZ];
 712
 713         /* Fragment table for host-based reassembly */
 714         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 715         unsigned int fragment_next;
 716
 717         /* TID bitmap for NoAck policy */
 718         u16 noack_map;
 719
 720         /* bit field of ACM bits (BIT(802.1D tag)) */
 721         u8 wmm_acm;
 722
 723         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 724         struct ieee80211_key __rcu *default_unicast_key;
 725         struct ieee80211_key __rcu *default_multicast_key;
 726         struct ieee80211_key __rcu *default_mgmt_key;
 727
 728         u16 sequence_number;
 729         __be16 control_port_protocol;
 730         bool control_port_no_encrypt;
 731
 732         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 733
 734         struct work_struct csa_finalize_work;
 735         int csa_counter_offset_beacon;
 736         int csa_counter_offset_presp;
 737         bool csa_radar_required;
 738
 739         /* used to reconfigure hardware SM PS */
 740         struct work_struct recalc_smps;
 741
 742         struct work_struct work;
 743         struct sk_buff_head skb_queue;
 744
 745         u8 needed_rx_chains;
 746         enum ieee80211_smps_mode smps_mode;
 747
 748         int user_power_level; /* in dBm */
 749         int ap_power_level; /* in dBm */
 750
 751         bool radar_required;
 752         struct delayed_work dfs_cac_timer_work;
 753
 754         /*
 755          * AP this belongs to: self in AP mode and
 756          * corresponding AP in VLAN mode, NULL for
 757          * all others (might be needed later in IBSS)
 758          */
 759         struct ieee80211_if_ap *bss;
 760
 761         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 762         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 763
 764         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 765         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 766
 767         union {
 768                 struct ieee80211_if_ap ap;
 769                 struct ieee80211_if_wds wds;
 770                 struct ieee80211_if_vlan vlan;
 771                 struct ieee80211_if_managed mgd;
 772                 struct ieee80211_if_ibss ibss;
 773                 struct ieee80211_if_mesh mesh;
 774                 u32 mntr_flags;
 775         } u;
 776
 777         spinlock_t cleanup_stations_lock;
 778         struct list_head cleanup_stations;
 779         struct work_struct cleanup_stations_wk;
 780
 781 #ifdef CONFIG_MAC80211_DEBUGFS
 782         struct {
 783                 struct dentry *subdir_stations;
 784                 struct dentry *default_unicast_key;
 785                 struct dentry *default_multicast_key;
 786                 struct dentry *default_mgmt_key;
 787         } debugfs;
 788 #endif
 789
 790         /* must be last, dynamically sized area in this! */
 791         struct ieee80211_vif vif;
 792 };
 793
 794 static inline
 795 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 796 {
 797         return container_of(p, struct ieee80211_sub_if_data, vif);
 798 }
 799
 800 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 801         __acquires(&sdata->wdev.mtx)
 802 {
 803         mutex_lock(&sdata->wdev.mtx);
 804         __acquire(&sdata->wdev.mtx);
 805 }
 806
 807 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 808         __releases(&sdata->wdev.mtx)
 809 {
 810         mutex_unlock(&sdata->wdev.mtx);
 811         __release(&sdata->wdev.mtx);
 812 }
 813
 814 static inline void
 815 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 816 {
 817         lockdep_assert_held(&sdata->wdev.mtx);
 818 }
 819
 820 static inline enum ieee80211_band
 821 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 822 {
 823         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 824         struct ieee80211_chanctx_conf *chanctx_conf;
 825
 826         rcu_read_lock();
 827         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 828         if (!WARN_ON(!chanctx_conf))
 829                 band = chanctx_conf->def.chan->band;
 830         rcu_read_unlock();
 831
 832         return band;
 833 }
 834
 835 static inline int
 836 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 837 {
 838         switch (chandef->width) {
 839         case NL80211_CHAN_WIDTH_5:
 840                 return 2;
 841         case NL80211_CHAN_WIDTH_10:
 842                 return 1;
 843         default:
 844                 return 0;
 845         }
 846 }
 847
 848 static inline int
 849 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 850 {
 851         struct ieee80211_chanctx_conf *chanctx_conf;
 852         int shift = 0;
 853
 854         rcu_read_lock();
 855         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 856         if (chanctx_conf)
 857                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 858         rcu_read_unlock();
 859
 860         return shift;
 861 }
 862
 863 enum sdata_queue_type {
 864         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 865         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 866         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 867 };
 868
 869 enum {
 870         IEEE80211_RX_MSG        = 1,
 871         IEEE80211_TX_STATUS_MSG = 2,
 872 };
 873
 874 enum queue_stop_reason {
 875         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 876         IEEE80211_QUEUE_STOP_REASON_PS,
 877         IEEE80211_QUEUE_STOP_REASON_CSA,
 878         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 879         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 880         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 881         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
 882         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 883 };
 884
 885 #ifdef CONFIG_MAC80211_LEDS
 886 struct tpt_led_trigger {
 887         struct led_trigger trig;
 888         char name[32];
 889         const struct ieee80211_tpt_blink *blink_table;
 890         unsigned int blink_table_len;
 891         struct timer_list timer;
 892         unsigned long prev_traffic;
 893         unsigned long tx_bytes, rx_bytes;
 894         unsigned int active, want;
 895         bool running;
 896 };
 897 #endif
 898
 899 /**
 900  * mac80211 scan flags - currently active scan mode
 901  *
 902  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 903  *      well be on the operating channel
 904  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 905  *      determine if we are on the operating channel or not
 906  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
 907  *      channel. This should not interrupt normal traffic.
 908  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 909  *      that the scan completed.
 910  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 911  *      a scan complete for an aborted scan.
 912  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
 913  *      cancelled.
 914  */
 915 enum {
 916         SCAN_SW_SCANNING,
 917         SCAN_HW_SCANNING,
 918         SCAN_ONCHANNEL_SCANNING,
 919         SCAN_COMPLETED,
 920         SCAN_ABORTED,
 921         SCAN_HW_CANCELLED,
 922 };
 923
 924 /**
 925  * enum mac80211_scan_state - scan state machine states
 926  *
 927  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 928  *      determines if we should keep on scanning or switch back to the
 929  *      operating channel
 930  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 931  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 932  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 933  *      send out data
 934  * @SCAN_RESUME: Resume the scan and scan the next channel
 935  * @SCAN_ABORT: Abort the scan and go back to operating channel
 936  */
 937 enum mac80211_scan_state {
 938         SCAN_DECISION,
 939         SCAN_SET_CHANNEL,
 940         SCAN_SEND_PROBE,
 941         SCAN_SUSPEND,
 942         SCAN_RESUME,
 943         SCAN_ABORT,
 944 };
 945
 946 struct ieee80211_local {
 947         /* embed the driver visible part.
 948          * don't cast (use the static inlines below), but we keep
 949          * it first anyway so they become a no-op */
 950         struct ieee80211_hw hw;
 951
 952         const struct ieee80211_ops *ops;
 953
 954         /*
 955          * private workqueue to mac80211. mac80211 makes this accessible
 956          * via ieee80211_queue_work()
 957          */
 958         struct workqueue_struct *workqueue;
 959
 960         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 961         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 962         spinlock_t queue_stop_reason_lock;
 963
 964         int open_count;
 965         int monitors, cooked_mntrs;
 966         /* number of interfaces with corresponding FIF_ flags */
 967         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 968             fif_probe_req;
 969         int probe_req_reg;
 970         unsigned int filter_flags; /* FIF_* */
 971
 972         bool wiphy_ciphers_allocated;
 973
 974         bool use_chanctx;
 975
 976         /* protects the aggregated multicast list and filter calls */
 977         spinlock_t filter_lock;
 978
 979         /* used for uploading changed mc list */
 980         struct work_struct reconfig_filter;
 981
 982         /* aggregated multicast list */
 983         struct netdev_hw_addr_list mc_list;
 984
 985         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 986
 987         /*
 988          * suspended is true if we finished all the suspend _and_ we have
 989          * not yet come up from resume. This is to be used by mac80211
 990          * to ensure driver sanity during suspend and mac80211's own
 991          * sanity. It can eventually be used for WoW as well.
 992          */
 993         bool suspended;
 994
 995         /*
 996          * Resuming is true while suspended, but when we're reprogramming the
 997          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 998          * again even though some other parts of the stack are still suspended
 999          * and we still drop received frames to avoid waking the stack.
1000          */
1001         bool resuming;
1002
1003         /*
1004          * quiescing is true during the suspend process _only_ to
1005          * ease timer cancelling etc.
1006          */
1007         bool quiescing;
1008
1009         /* device is started */
1010         bool started;
1011
1012         /* device is during a HW reconfig */
1013         bool in_reconfig;
1014
1015         /* wowlan is enabled -- don't reconfig on resume */
1016         bool wowlan;
1017
1018         /* DFS/radar detection is enabled */
1019         bool radar_detect_enabled;
1020         struct work_struct radar_detected_work;
1021
1022         /* number of RX chains the hardware has */
1023         u8 rx_chains;
1024
1025         int tx_headroom; /* required headroom for hardware/radiotap */
1026
1027         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1028          * added to skb_queue will be processed, but frames in
1029          * skb_queue_unreliable may be dropped if the total length of these
1030          * queues increases over the limit. */
1031 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1032         struct tasklet_struct tasklet;
1033         struct sk_buff_head skb_queue;
1034         struct sk_buff_head skb_queue_unreliable;
1035
1036         spinlock_t rx_path_lock;
1037
1038         /* Station data */
1039         /*
1040          * The mutex only protects the list, hash table and
1041          * counter, reads are done with RCU.
1042          */
1043         struct mutex sta_mtx;
1044         spinlock_t tim_lock;
1045         unsigned long num_sta;
1046         struct list_head sta_list;
1047         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1048         struct timer_list sta_cleanup;
1049         int sta_generation;
1050
1051         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1052         struct tasklet_struct tx_pending_tasklet;
1053
1054         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1055
1056         /* number of interfaces with corresponding IFF_ flags */
1057         atomic_t iff_allmultis, iff_promiscs;
1058
1059         struct rate_control_ref *rate_ctrl;
1060
1061         struct crypto_cipher *wep_tx_tfm;
1062         struct crypto_cipher *wep_rx_tfm;
1063         u32 wep_iv;
1064
1065         /* see iface.c */
1066         struct list_head interfaces;
1067         struct mutex iflist_mtx;
1068
1069         /*
1070          * Key mutex, protects sdata's key_list and sta_info's
1071          * key pointers (write access, they're RCU.)
1072          */
1073         struct mutex key_mtx;
1074
1075         /* mutex for scan and work locking */
1076         struct mutex mtx;
1077
1078         /* Scanning and BSS list */
1079         unsigned long scanning;
1080         struct cfg80211_ssid scan_ssid;
1081         struct cfg80211_scan_request *int_scan_req;
1082         struct cfg80211_scan_request *scan_req, *hw_scan_req;
1083         struct cfg80211_chan_def scan_chandef;
1084         enum ieee80211_band hw_scan_band;
1085         int scan_channel_idx;
1086         int scan_ies_len;
1087         int hw_scan_ies_bufsize;
1088
1089         struct work_struct sched_scan_stopped_work;
1090         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1091
1092         unsigned long leave_oper_channel_time;
1093         enum mac80211_scan_state next_scan_state;
1094         struct delayed_work scan_work;
1095         struct ieee80211_sub_if_data __rcu *scan_sdata;
1096         struct cfg80211_chan_def csa_chandef;
1097         /* For backward compatibility only -- do not use */
1098         struct cfg80211_chan_def _oper_chandef;
1099
1100         /* Temporary remain-on-channel for off-channel operations */
1101         struct ieee80211_channel *tmp_channel;
1102
1103         /* channel contexts */
1104         struct list_head chanctx_list;
1105         struct mutex chanctx_mtx;
1106
1107         /* SNMP counters */
1108         /* dot11CountersTable */
1109         u32 dot11TransmittedFragmentCount;
1110         u32 dot11MulticastTransmittedFrameCount;
1111         u32 dot11FailedCount;
1112         u32 dot11RetryCount;
1113         u32 dot11MultipleRetryCount;
1114         u32 dot11FrameDuplicateCount;
1115         u32 dot11ReceivedFragmentCount;
1116         u32 dot11MulticastReceivedFrameCount;
1117         u32 dot11TransmittedFrameCount;
1118
1119 #ifdef CONFIG_MAC80211_LEDS
1120         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1121         struct tpt_led_trigger *tpt_led_trigger;
1122         char tx_led_name[32], rx_led_name[32],
1123              assoc_led_name[32], radio_led_name[32];
1124 #endif
1125
1126 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1127         /* TX/RX handler statistics */
1128         unsigned int tx_handlers_drop;
1129         unsigned int tx_handlers_queued;
1130         unsigned int tx_handlers_drop_unencrypted;
1131         unsigned int tx_handlers_drop_fragment;
1132         unsigned int tx_handlers_drop_wep;
1133         unsigned int tx_handlers_drop_not_assoc;
1134         unsigned int tx_handlers_drop_unauth_port;
1135         unsigned int rx_handlers_drop;
1136         unsigned int rx_handlers_queued;
1137         unsigned int rx_handlers_drop_nullfunc;
1138         unsigned int rx_handlers_drop_defrag;
1139         unsigned int rx_handlers_drop_short;
1140         unsigned int tx_expand_skb_head;
1141         unsigned int tx_expand_skb_head_cloned;
1142         unsigned int rx_expand_skb_head;
1143         unsigned int rx_expand_skb_head2;
1144         unsigned int rx_handlers_fragments;
1145         unsigned int tx_status_drop;
1146 #define I802_DEBUG_INC(c) (c)++
1147 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1148 #define I802_DEBUG_INC(c) do { } while (0)
1149 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1150
1151
1152         int total_ps_buffered; /* total number of all buffered unicast and
1153                                 * multicast packets for power saving stations
1154                                 */
1155
1156         bool pspolling;
1157         bool offchannel_ps_enabled;
1158         /*
1159          * PS can only be enabled when we have exactly one managed
1160          * interface (and monitors) in PS, this then points there.
1161          */
1162         struct ieee80211_sub_if_data *ps_sdata;
1163         struct work_struct dynamic_ps_enable_work;
1164         struct work_struct dynamic_ps_disable_work;
1165         struct timer_list dynamic_ps_timer;
1166         struct notifier_block network_latency_notifier;
1167         struct notifier_block ifa_notifier;
1168         struct notifier_block ifa6_notifier;
1169
1170         /*
1171          * The dynamic ps timeout configured from user space via WEXT -
1172          * this will override whatever chosen by mac80211 internally.
1173          */
1174         int dynamic_ps_forced_timeout;
1175
1176         int user_power_level; /* in dBm, for all interfaces */
1177
1178         enum ieee80211_smps_mode smps_mode;
1179
1180         struct work_struct restart_work;
1181
1182 #ifdef CONFIG_MAC80211_DEBUGFS
1183         struct local_debugfsdentries {
1184                 struct dentry *rcdir;
1185                 struct dentry *keys;
1186         } debugfs;
1187 #endif
1188
1189         /*
1190          * Remain-on-channel support
1191          */
1192         struct list_head roc_list;
1193         struct work_struct hw_roc_start, hw_roc_done;
1194         unsigned long hw_roc_start_time;
1195         u64 roc_cookie_counter;
1196
1197         struct idr ack_status_frames;
1198         spinlock_t ack_status_lock;
1199
1200         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1201
1202         /* virtual monitor interface */
1203         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1204         struct cfg80211_chan_def monitor_chandef;
1205 };
1206
1207 static inline struct ieee80211_sub_if_data *
1208 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1209 {
1210         return netdev_priv(dev);
1211 }
1212
1213 static inline struct ieee80211_sub_if_data *
1214 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1215 {
1216         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1217 }
1218
1219 /* this struct represents 802.11n's RA/TID combination */
1220 struct ieee80211_ra_tid {
1221         u8 ra[ETH_ALEN];
1222         u16 tid;
1223 };
1224
1225 /* this struct holds the value parsing from channel switch IE  */
1226 struct ieee80211_csa_ie {
1227         struct cfg80211_chan_def chandef;
1228         u8 mode;
1229         u8 count;
1230         u8 ttl;
1231         u16 pre_value;
1232 };
1233
1234 /* Parsed Information Elements */
1235 struct ieee802_11_elems {
1236         const u8 *ie_start;
1237         size_t total_len;
1238
1239         /* pointers to IEs */
1240         const u8 *ssid;
1241         const u8 *supp_rates;
1242         const u8 *ds_params;
1243         const struct ieee80211_tim_ie *tim;
1244         const u8 *challenge;
1245         const u8 *rsn;
1246         const u8 *erp_info;
1247         const u8 *ext_supp_rates;
1248         const u8 *wmm_info;
1249         const u8 *wmm_param;
1250         const struct ieee80211_ht_cap *ht_cap_elem;
1251         const struct ieee80211_ht_operation *ht_operation;
1252         const struct ieee80211_vht_cap *vht_cap_elem;
1253         const struct ieee80211_vht_operation *vht_operation;
1254         const struct ieee80211_meshconf_ie *mesh_config;
1255         const u8 *mesh_id;
1256         const u8 *peering;
1257         const __le16 *awake_window;
1258         const u8 *preq;
1259         const u8 *prep;
1260         const u8 *perr;
1261         const struct ieee80211_rann_ie *rann;
1262         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1263         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1264         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1265         const u8 *country_elem;
1266         const u8 *pwr_constr_elem;
1267         const struct ieee80211_timeout_interval_ie *timeout_int;
1268         const u8 *opmode_notif;
1269         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1270         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1271
1272         /* length of them, respectively */
1273         u8 ssid_len;
1274         u8 supp_rates_len;
1275         u8 tim_len;
1276         u8 challenge_len;
1277         u8 rsn_len;
1278         u8 ext_supp_rates_len;
1279         u8 wmm_info_len;
1280         u8 wmm_param_len;
1281         u8 mesh_id_len;
1282         u8 peering_len;
1283         u8 preq_len;
1284         u8 prep_len;
1285         u8 perr_len;
1286         u8 country_elem_len;
1287
1288         /* whether a parse error occurred while retrieving these elements */
1289         bool parse_error;
1290 };
1291
1292 static inline struct ieee80211_local *hw_to_local(
1293         struct ieee80211_hw *hw)
1294 {
1295         return container_of(hw, struct ieee80211_local, hw);
1296 }
1297
1298
1299 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1300 {
1301         return ether_addr_equal(raddr, addr) ||
1302                is_broadcast_ether_addr(raddr);
1303 }
1304
1305 static inline bool
1306 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1307 {
1308         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1309                      status->flag & RX_FLAG_MACTIME_END);
1310         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1311 }
1312
1313 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1314                                      struct ieee80211_rx_status *status,
1315                                      unsigned int mpdu_len,
1316                                      unsigned int mpdu_offset);
1317 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1318 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1319 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1320                                       u32 changed);
1321 void ieee80211_configure_filter(struct ieee80211_local *local);
1322 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1323
1324 /* STA code */
1325 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1326 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1327                        struct cfg80211_auth_request *req);
1328 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1329                         struct cfg80211_assoc_request *req);
1330 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1331                          struct cfg80211_deauth_request *req);
1332 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1333                            struct cfg80211_disassoc_request *req);
1334 void ieee80211_send_pspoll(struct ieee80211_local *local,
1335                            struct ieee80211_sub_if_data *sdata);
1336 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1337 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1338 int ieee80211_max_network_latency(struct notifier_block *nb,
1339                                   unsigned long data, void *dummy);
1340 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1341 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1342 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1343                                   struct sk_buff *skb);
1344 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1345 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1346 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1347 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1348                                   __le16 fc, bool acked);
1349 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1350
1351 /* IBSS code */
1352 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1353 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1354 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1355                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1356 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1357                         struct cfg80211_ibss_params *params);
1358 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1359 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1360 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1361                                    struct sk_buff *skb);
1362 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1363                               struct cfg80211_csa_settings *csa_settings);
1364 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1365 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1366
1367 /* mesh code */
1368 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1369 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1370                                    struct sk_buff *skb);
1371 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1372                               struct cfg80211_csa_settings *csa_settings,
1373                               bool csa_action);
1374 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1375
1376 /* scan/BSS handling */
1377 void ieee80211_scan_work(struct work_struct *work);
1378 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1379                                 const u8 *ssid, u8 ssid_len,
1380                                 struct ieee80211_channel *chan,
1381                                 enum nl80211_bss_scan_width scan_width);
1382 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1383                            struct cfg80211_scan_request *req);
1384 void ieee80211_scan_cancel(struct ieee80211_local *local);
1385 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1386 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1387
1388 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1389 struct ieee80211_bss *
1390 ieee80211_bss_info_update(struct ieee80211_local *local,
1391                           struct ieee80211_rx_status *rx_status,
1392                           struct ieee80211_mgmt *mgmt,
1393                           size_t len,
1394                           struct ieee802_11_elems *elems,
1395                           struct ieee80211_channel *channel);
1396 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1397                           struct ieee80211_bss *bss);
1398
1399 /* scheduled scan handling */
1400 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1401                                        struct cfg80211_sched_scan_request *req);
1402 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1403 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1404
1405 /* off-channel helpers */
1406 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1407 void ieee80211_offchannel_return(struct ieee80211_local *local);
1408 void ieee80211_roc_setup(struct ieee80211_local *local);
1409 void ieee80211_start_next_roc(struct ieee80211_local *local);
1410 void ieee80211_roc_purge(struct ieee80211_local *local,
1411                          struct ieee80211_sub_if_data *sdata);
1412 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1413 void ieee80211_sw_roc_work(struct work_struct *work);
1414 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1415
1416 /* channel switch handling */
1417 void ieee80211_csa_finalize_work(struct work_struct *work);
1418
1419 /* interface handling */
1420 int ieee80211_iface_init(void);
1421 void ieee80211_iface_exit(void);
1422 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1423                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1424                      struct vif_params *params);
1425 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1426                              enum nl80211_iftype type);
1427 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1428 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1429 u32 ieee80211_idle_off(struct ieee80211_local *local);
1430 void ieee80211_recalc_idle(struct ieee80211_local *local);
1431 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1432                                     const int offset);
1433 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1434 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1435 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1436 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1437
1438 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1439 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1440 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1441                             struct cfg80211_beacon_data *params);
1442
1443 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1444 {
1445         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1446 }
1447
1448 /* tx handling */
1449 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1450 void ieee80211_tx_pending(unsigned long data);
1451 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1452                                          struct net_device *dev);
1453 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1454                                        struct net_device *dev);
1455 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1456                               struct sk_buff_head *skbs);
1457
1458 /* HT */
1459 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1460                                      struct ieee80211_sta_ht_cap *ht_cap);
1461 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1462                                        struct ieee80211_supported_band *sband,
1463                                        const struct ieee80211_ht_cap *ht_cap_ie,
1464                                        struct sta_info *sta);
1465 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1466                           const u8 *da, u16 tid,
1467                           u16 initiator, u16 reason_code);
1468 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1469                                enum ieee80211_smps_mode smps, const u8 *da,
1470                                const u8 *bssid);
1471 void ieee80211_request_smps_ap_work(struct work_struct *work);
1472 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1473 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1474                                    enum ieee80211_smps_mode smps_mode_new);
1475
1476 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1477                                      u16 initiator, u16 reason, bool stop);
1478 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1479                                     u16 initiator, u16 reason, bool stop);
1480 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1481                                          enum ieee80211_agg_stop_reason reason);
1482 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1483                              struct sta_info *sta,
1484                              struct ieee80211_mgmt *mgmt, size_t len);
1485 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1486                                   struct sta_info *sta,
1487                                   struct ieee80211_mgmt *mgmt,
1488                                   size_t len);
1489 void ieee80211_process_addba_request(struct ieee80211_local *local,
1490                                      struct sta_info *sta,
1491                                      struct ieee80211_mgmt *mgmt,
1492                                      size_t len);
1493
1494 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1495                                    enum ieee80211_agg_stop_reason reason);
1496 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1497                                     enum ieee80211_agg_stop_reason reason);
1498 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1499 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1500 void ieee80211_ba_session_work(struct work_struct *work);
1501 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1502 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1503
1504 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1505
1506 /* VHT */
1507 void
1508 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1509                                     struct ieee80211_supported_band *sband,
1510                                     const struct ieee80211_vht_cap *vht_cap_ie,
1511                                     struct sta_info *sta);
1512 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1513 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1514 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1515                                  struct sta_info *sta, u8 opmode,
1516                                  enum ieee80211_band band, bool nss_only);
1517 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1518                                       struct ieee80211_sta_vht_cap *vht_cap);
1519
1520 /* Spectrum management */
1521 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1522                                        struct ieee80211_mgmt *mgmt,
1523                                        size_t len);
1524 /**
1525  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1526  * @sdata: the sdata of the interface which has received the frame
1527  * @elems: parsed 802.11 elements received with the frame
1528  * @beacon: indicates if the frame was a beacon or probe response
1529  * @current_band: indicates the current band
1530  * @sta_flags: contains information about own capabilities and restrictions
1531  *      to decide which channel switch announcements can be accepted. Only the
1532  *      following subset of &enum ieee80211_sta_flags are evaluated:
1533  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1534  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1535  *      %IEEE80211_STA_DISABLE_160MHZ.
1536  * @bssid: the currently connected bssid (for reporting)
1537  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1538         All of them will be filled with if success only.
1539  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1540  */
1541 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1542                                  struct ieee802_11_elems *elems, bool beacon,
1543                                  enum ieee80211_band current_band,
1544                                  u32 sta_flags, u8 *bssid,
1545                                  struct ieee80211_csa_ie *csa_ie);
1546
1547 /* Suspend/resume and hw reconfiguration */
1548 int ieee80211_reconfig(struct ieee80211_local *local);
1549 void ieee80211_stop_device(struct ieee80211_local *local);
1550
1551 int __ieee80211_suspend(struct ieee80211_hw *hw,
1552                         struct cfg80211_wowlan *wowlan);
1553
1554 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1555 {
1556         struct ieee80211_local *local = hw_to_local(hw);
1557
1558         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1559                 "%s: resume with hardware scan still in progress\n",
1560                 wiphy_name(hw->wiphy));
1561
1562         return ieee80211_reconfig(hw_to_local(hw));
1563 }
1564
1565 /* utility functions/constants */
1566 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1567 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1568                         enum nl80211_iftype type);
1569 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1570                              int rate, int erp, int short_preamble,
1571                              int shift);
1572 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1573                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1574                                      gfp_t gfp);
1575 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1576                                bool bss_notify);
1577 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1578                     enum ieee80211_band band);
1579
1580 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1581                                  struct sk_buff *skb, int tid,
1582                                  enum ieee80211_band band);
1583
1584 static inline void
1585 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1586                           struct sk_buff *skb, int tid,
1587                           enum ieee80211_band band)
1588 {
1589         rcu_read_lock();
1590         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1591         rcu_read_unlock();
1592 }
1593
1594 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1595                                         struct sk_buff *skb, int tid)
1596 {
1597         struct ieee80211_chanctx_conf *chanctx_conf;
1598
1599         rcu_read_lock();
1600         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1601         if (WARN_ON(!chanctx_conf)) {
1602                 rcu_read_unlock();
1603                 kfree_skb(skb);
1604                 return;
1605         }
1606
1607         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1608                                     chanctx_conf->def.chan->band);
1609         rcu_read_unlock();
1610 }
1611
1612 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1613                                     struct sk_buff *skb)
1614 {
1615         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1616         ieee80211_tx_skb_tid(sdata, skb, 7);
1617 }
1618
1619 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1620                                struct ieee802_11_elems *elems,
1621                                u64 filter, u32 crc);
1622 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1623                                           bool action,
1624                                           struct ieee802_11_elems *elems)
1625 {
1626         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1627 }
1628
1629 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1630 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1631 void ieee80211_dynamic_ps_timer(unsigned long data);
1632 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1633                              struct ieee80211_sub_if_data *sdata,
1634                              int powersave);
1635 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1636                              struct ieee80211_hdr *hdr);
1637 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1638                              struct ieee80211_hdr *hdr, bool ack);
1639
1640 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1641                                      unsigned long queues,
1642                                      enum queue_stop_reason reason);
1643 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1644                                      unsigned long queues,
1645                                      enum queue_stop_reason reason);
1646 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1647                                     enum queue_stop_reason reason);
1648 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1649                                     enum queue_stop_reason reason);
1650 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1651 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1652                                struct sk_buff *skb);
1653 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1654                                    struct sk_buff_head *skbs,
1655                                    void (*fn)(void *data), void *data);
1656 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1657                                               struct sk_buff_head *skbs)
1658 {
1659         ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1660 }
1661 void ieee80211_flush_queues(struct ieee80211_local *local,
1662                             struct ieee80211_sub_if_data *sdata);
1663
1664 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1665                          u16 transaction, u16 auth_alg, u16 status,
1666                          const u8 *extra, size_t extra_len, const u8 *bssid,
1667                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1668                          u32 tx_flags);
1669 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1670                                     const u8 *bssid, u16 stype, u16 reason,
1671                                     bool send_frame, u8 *frame_buf);
1672 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1673                              size_t buffer_len, const u8 *ie, size_t ie_len,
1674                              enum ieee80211_band band, u32 rate_mask,
1675                              struct cfg80211_chan_def *chandef);
1676 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1677                                           u8 *dst, u32 ratemask,
1678                                           struct ieee80211_channel *chan,
1679                                           const u8 *ssid, size_t ssid_len,
1680                                           const u8 *ie, size_t ie_len,
1681                                           bool directed);
1682 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1683                               const u8 *ssid, size_t ssid_len,
1684                               const u8 *ie, size_t ie_len,
1685                               u32 ratemask, bool directed, u32 tx_flags,
1686                               struct ieee80211_channel *channel, bool scan);
1687
1688 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1689                             struct ieee802_11_elems *elems,
1690                             enum ieee80211_band band, u32 *basic_rates);
1691 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1692                                  enum ieee80211_smps_mode smps_mode);
1693 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1694                                 enum ieee80211_smps_mode smps_mode);
1695 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1696
1697 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1698                           const u8 *ids, int n_ids, size_t offset);
1699 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1700 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1701                               u16 cap);
1702 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1703                                const struct cfg80211_chan_def *chandef,
1704                                u16 prot_mode);
1705 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1706                                u32 cap);
1707 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1708                              const struct ieee80211_supported_band *sband,
1709                              const u8 *srates, int srates_len, u32 *rates);
1710 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1711                             struct sk_buff *skb, bool need_basic,
1712                             enum ieee80211_band band);
1713 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1714                                 struct sk_buff *skb, bool need_basic,
1715                                 enum ieee80211_band band);
1716
1717 /* channel management */
1718 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1719                                   const struct ieee80211_ht_operation *ht_oper,
1720                                   struct cfg80211_chan_def *chandef);
1721 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1722
1723 int __must_check
1724 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1725                           const struct cfg80211_chan_def *chandef,
1726                           enum ieee80211_chanctx_mode mode);
1727 int __must_check
1728 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1729                                const struct cfg80211_chan_def *chandef,
1730                                u32 *changed);
1731 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1732 int __must_check
1733 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1734                              const struct cfg80211_chan_def *chandef,
1735                              u32 *changed);
1736 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1737 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1738 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1739                                          bool clear);
1740
1741 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1742                                    struct ieee80211_chanctx *chanctx);
1743 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1744                                     struct ieee80211_chanctx *chanctx);
1745
1746 void ieee80211_dfs_cac_timer(unsigned long data);
1747 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1748 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1749 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1750 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1751                               struct cfg80211_csa_settings *csa_settings);
1752
1753 #ifdef CONFIG_MAC80211_NOINLINE
1754 #define debug_noinline noinline
1755 #else
1756 #define debug_noinline
1757 #endif
1758
1759 #endif /* IEEE80211_I_H */