net/mac80211/ieee80211_i.h

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005, Devicescape Software, Inc.
   4  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   5  * Copyright 2007-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #ifndef IEEE80211_I_H
  14 #define IEEE80211_I_H
  15
  16 #include <linux/kernel.h>
  17 #include <linux/device.h>
  18 #include <linux/if_ether.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/list.h>
  21 #include <linux/netdevice.h>
  22 #include <linux/skbuff.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/types.h>
  25 #include <linux/spinlock.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/leds.h>
  28 #include <linux/idr.h>
  29 #include <net/ieee80211_radiotap.h>
  30 #include <net/cfg80211.h>
  31 #include <net/mac80211.h>
  32 #include "key.h"
  33 #include "sta_info.h"
  34 #include "debug.h"
  35
  36 struct ieee80211_local;
  37
  38 /* Maximum number of broadcast/multicast frames to buffer when some of the
  39  * associated stations are using power saving. */
  40 #define AP_MAX_BC_BUFFER 128
  41
  42 /* Maximum number of frames buffered to all STAs, including multicast frames.
  43  * Note: increasing this limit increases the potential memory requirement. Each
  44  * frame can be up to about 2 kB long. */
  45 #define TOTAL_MAX_TX_BUFFER 512
  46
  47 /* Required encryption head and tailroom */
  48 #define IEEE80211_ENCRYPT_HEADROOM 8
  49 #define IEEE80211_ENCRYPT_TAILROOM 18
  50
  51 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  52  * reception of at least three fragmented frames. This limit can be increased
  53  * by changing this define, at the cost of slower frame reassembly and
  54  * increased memory use (about 2 kB of RAM per entry). */
  55 #define IEEE80211_FRAGMENT_MAX 4
  56
  57 /* power level hasn't been configured (or set to automatic) */
  58 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  59
  60 /*
  61  * Some APs experience problems when working with U-APSD. Decreasing the
  62  * probability of that happening by using legacy mode for all ACs but VO isn't
  63  * enough.
  64  *
  65  * Cisco 4410N originally forced us to enable VO by default only because it
  66  * treated non-VO ACs as legacy.
  67  *
  68  * However some APs (notably Netgear R7000) silently reclassify packets to
  69  * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
  70  * clients would never see some frames (e.g. ARP responses) or would fetch them
  71  * accidentally after a long time.
  72  *
  73  * It makes little sense to enable u-APSD queues by default because it needs
  74  * userspace applications to be aware of it to actually take advantage of the
  75  * possible additional powersavings. Implicitly depending on driver autotrigger
  76  * frame support doesn't make much sense.
  77  */
  78 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
  79
  80 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  81         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  82
  83 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  84
  85 struct ieee80211_fragment_entry {
  86         unsigned long first_frag_time;
  87         unsigned int seq;
  88         unsigned int rx_queue;
  89         unsigned int last_frag;
  90         unsigned int extra_len;
  91         struct sk_buff_head skb_list;
  92         int ccmp; /* Whether fragments were encrypted with CCMP */
  93         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  94 };
  95
  96
  97 struct ieee80211_bss {
  98         u32 device_ts_beacon, device_ts_presp;
  99
 100         bool wmm_used;
 101         bool uapsd_supported;
 102
 103 #define IEEE80211_MAX_SUPP_RATES 32
 104         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 105         size_t supp_rates_len;
 106         struct ieee80211_rate *beacon_rate;
 107
 108         /*
 109          * During association, we save an ERP value from a probe response so
 110          * that we can feed ERP info to the driver when handling the
 111          * association completes. these fields probably won't be up-to-date
 112          * otherwise, you probably don't want to use them.
 113          */
 114         bool has_erp_value;
 115         u8 erp_value;
 116
 117         /* Keep track of the corruption of the last beacon/probe response. */
 118         u8 corrupt_data;
 119
 120         /* Keep track of what bits of information we have valid info for. */
 121         u8 valid_data;
 122 };
 123
 124 /**
 125  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 126  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 127  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 128  *
 129  * These are bss flags that are attached to a bss in the
 130  * @corrupt_data field of &struct ieee80211_bss.
 131  */
 132 enum ieee80211_bss_corrupt_data_flags {
 133         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 134         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 135 };
 136
 137 /**
 138  * enum ieee80211_valid_data_flags - BSS valid data flags
 139  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 140  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 141  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 142  *
 143  * These are bss flags that are attached to a bss in the
 144  * @valid_data field of &struct ieee80211_bss.  They show which parts
 145  * of the data structure were recieved as a result of an un-corrupted
 146  * beacon/probe response.
 147  */
 148 enum ieee80211_bss_valid_data_flags {
 149         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 150         IEEE80211_BSS_VALID_RATES               = BIT(2),
 151         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 152 };
 153
 154 typedef unsigned __bitwise__ ieee80211_tx_result;
 155 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 156 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 157 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 158
 159 #define IEEE80211_TX_UNICAST            BIT(1)
 160 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 161
 162 struct ieee80211_tx_data {
 163         struct sk_buff *skb;
 164         struct sk_buff_head skbs;
 165         struct ieee80211_local *local;
 166         struct ieee80211_sub_if_data *sdata;
 167         struct sta_info *sta;
 168         struct ieee80211_key *key;
 169         struct ieee80211_tx_rate rate;
 170
 171         unsigned int flags;
 172 };
 173
 174
 175 typedef unsigned __bitwise__ ieee80211_rx_result;
 176 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 177 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 178 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 179 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 180
 181 /**
 182  * enum ieee80211_packet_rx_flags - packet RX flags
 183  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 184  *      (incl. multicast frames)
 185  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 186  * @IEEE80211_RX_AMSDU: a-MSDU packet
 187  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 188  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 189  *
 190  * These are per-frame flags that are attached to a frame in the
 191  * @rx_flags field of &struct ieee80211_rx_status.
 192  */
 193 enum ieee80211_packet_rx_flags {
 194         IEEE80211_RX_RA_MATCH                   = BIT(1),
 195         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 196         IEEE80211_RX_AMSDU                      = BIT(3),
 197         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 198         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 199 };
 200
 201 /**
 202  * enum ieee80211_rx_flags - RX data flags
 203  *
 204  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 205  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 206  *      to cfg80211_report_obss_beacon().
 207  * @IEEE80211_RX_REORDER_TIMER: this frame is released by the
 208  *      reorder buffer timeout timer, not the normal RX path
 209  *
 210  * These flags are used across handling multiple interfaces
 211  * for a single frame.
 212  */
 213 enum ieee80211_rx_flags {
 214         IEEE80211_RX_CMNTR              = BIT(0),
 215         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 216         IEEE80211_RX_REORDER_TIMER      = BIT(2),
 217 };
 218
 219 struct ieee80211_rx_data {
 220         struct sk_buff *skb;
 221         struct ieee80211_local *local;
 222         struct ieee80211_sub_if_data *sdata;
 223         struct sta_info *sta;
 224         struct ieee80211_key *key;
 225
 226         unsigned int flags;
 227
 228         /*
 229          * Index into sequence numbers array, 0..16
 230          * since the last (16) is used for non-QoS,
 231          * will be 16 on non-QoS frames.
 232          */
 233         int seqno_idx;
 234
 235         /*
 236          * Index into the security IV/PN arrays, 0..16
 237          * since the last (16) is used for CCMP-encrypted
 238          * management frames, will be set to 16 on mgmt
 239          * frames and 0 on non-QoS frames.
 240          */
 241         int security_idx;
 242
 243         u32 tkip_iv32;
 244         u16 tkip_iv16;
 245 };
 246
 247 struct ieee80211_csa_settings {
 248         const u16 *counter_offsets_beacon;
 249         const u16 *counter_offsets_presp;
 250
 251         int n_counter_offsets_beacon;
 252         int n_counter_offsets_presp;
 253
 254         u8 count;
 255 };
 256
 257 struct beacon_data {
 258         u8 *head, *tail;
 259         int head_len, tail_len;
 260         struct ieee80211_meshconf_ie *meshconf;
 261         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 262         u8 csa_current_counter;
 263         struct rcu_head rcu_head;
 264 };
 265
 266 struct probe_resp {
 267         struct rcu_head rcu_head;
 268         int len;
 269         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 270         u8 data[0];
 271 };
 272
 273 struct ps_data {
 274         /* yes, this looks ugly, but guarantees that we can later use
 275          * bitmap_empty :)
 276          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 277         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 278                         __aligned(__alignof__(unsigned long));
 279         struct sk_buff_head bc_buf;
 280         atomic_t num_sta_ps; /* number of stations in PS mode */
 281         int dtim_count;
 282         bool dtim_bc_mc;
 283 };
 284
 285 struct ieee80211_if_ap {
 286         struct beacon_data __rcu *beacon;
 287         struct probe_resp __rcu *probe_resp;
 288
 289         /* to be used after channel switch. */
 290         struct cfg80211_beacon_data *next_beacon;
 291         struct list_head vlans; /* write-protected with RTNL and local->mtx */
 292
 293         struct ps_data ps;
 294         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 295         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 296                          driver_smps_mode; /* smps mode request */
 297
 298         struct work_struct request_smps_work;
 299 };
 300
 301 struct ieee80211_if_wds {
 302         struct sta_info *sta;
 303         u8 remote_addr[ETH_ALEN];
 304 };
 305
 306 struct ieee80211_if_vlan {
 307         struct list_head list; /* write-protected with RTNL and local->mtx */
 308
 309         /* used for all tx if the VLAN is configured to 4-addr mode */
 310         struct sta_info __rcu *sta;
 311 };
 312
 313 struct mesh_stats {
 314         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 315         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 316         __u32 fwded_frames;             /* Mesh total forwarded frames */
 317         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 318         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 319         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 320 };
 321
 322 #define PREQ_Q_F_START          0x1
 323 #define PREQ_Q_F_REFRESH        0x2
 324 struct mesh_preq_queue {
 325         struct list_head list;
 326         u8 dst[ETH_ALEN];
 327         u8 flags;
 328 };
 329
 330 #if HZ/100 == 0
 331 #define IEEE80211_ROC_MIN_LEFT  1
 332 #else
 333 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 334 #endif
 335
 336 struct ieee80211_roc_work {
 337         struct list_head list;
 338         struct list_head dependents;
 339
 340         struct delayed_work work;
 341
 342         struct ieee80211_sub_if_data *sdata;
 343
 344         struct ieee80211_channel *chan;
 345
 346         bool started, abort, hw_begun, notified;
 347         bool to_be_freed;
 348         bool on_channel;
 349
 350         unsigned long hw_start_time;
 351
 352         u32 duration, req_duration;
 353         struct sk_buff *frame;
 354         u64 cookie, mgmt_tx_cookie;
 355         enum ieee80211_roc_type type;
 356 };
 357
 358 /* flags used in struct ieee80211_if_managed.flags */
 359 enum ieee80211_sta_flags {
 360         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 361         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 362         IEEE80211_STA_DISABLE_HT        = BIT(4),
 363         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 364         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 365         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 366         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 367         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 368         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 369         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 370         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 371         IEEE80211_STA_DISABLE_WMM       = BIT(14),
 372         IEEE80211_STA_ENABLE_RRM        = BIT(15),
 373 };
 374
 375 struct ieee80211_mgd_auth_data {
 376         struct cfg80211_bss *bss;
 377         unsigned long timeout;
 378         int tries;
 379         u16 algorithm, expected_transaction;
 380
 381         u8 key[WLAN_KEY_LEN_WEP104];
 382         u8 key_len, key_idx;
 383         bool done;
 384         bool timeout_started;
 385
 386         u16 sae_trans, sae_status;
 387         size_t data_len;
 388         u8 data[];
 389 };
 390
 391 struct ieee80211_mgd_assoc_data {
 392         struct cfg80211_bss *bss;
 393         const u8 *supp_rates;
 394
 395         unsigned long timeout;
 396         int tries;
 397
 398         u16 capability;
 399         u8 prev_bssid[ETH_ALEN];
 400         u8 ssid[IEEE80211_MAX_SSID_LEN];
 401         u8 ssid_len;
 402         u8 supp_rates_len;
 403         bool wmm, uapsd;
 404         bool need_beacon;
 405         bool synced;
 406         bool timeout_started;
 407
 408         u8 ap_ht_param;
 409
 410         struct ieee80211_vht_cap ap_vht_cap;
 411
 412         size_t ie_len;
 413         u8 ie[];
 414 };
 415
 416 struct ieee80211_if_managed {
 417         struct timer_list timer;
 418         struct timer_list conn_mon_timer;
 419         struct timer_list bcn_mon_timer;
 420         struct timer_list chswitch_timer;
 421         struct work_struct monitor_work;
 422         struct work_struct chswitch_work;
 423         struct work_struct beacon_connection_loss_work;
 424         struct work_struct csa_connection_drop_work;
 425
 426         unsigned long beacon_timeout;
 427         unsigned long probe_timeout;
 428         int probe_send_count;
 429         bool nullfunc_failed;
 430         bool connection_loss;
 431
 432         struct cfg80211_bss *associated;
 433         struct ieee80211_mgd_auth_data *auth_data;
 434         struct ieee80211_mgd_assoc_data *assoc_data;
 435
 436         u8 bssid[ETH_ALEN];
 437
 438         u16 aid;
 439
 440         bool powersave; /* powersave requested for this iface */
 441         bool broken_ap; /* AP is broken -- turn off powersave */
 442         bool have_beacon;
 443         u8 dtim_period;
 444         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 445                                  driver_smps_mode; /* smps mode request */
 446
 447         struct work_struct request_smps_work;
 448
 449         unsigned int flags;
 450
 451         bool beacon_crc_valid;
 452         u32 beacon_crc;
 453
 454         bool status_acked;
 455         bool status_received;
 456         __le16 status_fc;
 457
 458         enum {
 459                 IEEE80211_MFP_DISABLED,
 460                 IEEE80211_MFP_OPTIONAL,
 461                 IEEE80211_MFP_REQUIRED
 462         } mfp; /* management frame protection */
 463
 464         /*
 465          * Bitmask of enabled u-apsd queues,
 466          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 467          * to take effect.
 468          */
 469         unsigned int uapsd_queues;
 470
 471         /*
 472          * Maximum number of buffered frames AP can deliver during a
 473          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 474          * Needs a new association to take effect.
 475          */
 476         unsigned int uapsd_max_sp_len;
 477
 478         int wmm_last_param_set;
 479
 480         u8 use_4addr;
 481
 482         s16 p2p_noa_index;
 483
 484         /* Signal strength from the last Beacon frame in the current BSS. */
 485         int last_beacon_signal;
 486
 487         /*
 488          * Weighted average of the signal strength from Beacon frames in the
 489          * current BSS. This is in units of 1/16 of the signal unit to maintain
 490          * accuracy and to speed up calculations, i.e., the value need to be
 491          * divided by 16 to get the actual value.
 492          */
 493         int ave_beacon_signal;
 494
 495         /*
 496          * Number of Beacon frames used in ave_beacon_signal. This can be used
 497          * to avoid generating less reliable cqm events that would be based
 498          * only on couple of received frames.
 499          */
 500         unsigned int count_beacon_signal;
 501
 502         /*
 503          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 504          * that triggered a cqm event. 0 indicates that no event has been
 505          * generated for the current association.
 506          */
 507         int last_cqm_event_signal;
 508
 509         /*
 510          * State variables for keeping track of RSSI of the AP currently
 511          * connected to and informing driver when RSSI has gone
 512          * below/above a certain threshold.
 513          */
 514         int rssi_min_thold, rssi_max_thold;
 515         int last_ave_beacon_signal;
 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         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 520         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 521
 522         u8 tdls_peer[ETH_ALEN] __aligned(2);
 523         struct delayed_work tdls_peer_del_work;
 524 };
 525
 526 struct ieee80211_if_ibss {
 527         struct timer_list timer;
 528         struct work_struct csa_connection_drop_work;
 529
 530         unsigned long last_scan_completed;
 531
 532         u32 basic_rates;
 533
 534         bool fixed_bssid;
 535         bool fixed_channel;
 536         bool privacy;
 537
 538         bool control_port;
 539         bool userspace_handles_dfs;
 540
 541         u8 bssid[ETH_ALEN] __aligned(2);
 542         u8 ssid[IEEE80211_MAX_SSID_LEN];
 543         u8 ssid_len, ie_len;
 544         u8 *ie;
 545         struct cfg80211_chan_def chandef;
 546
 547         unsigned long ibss_join_req;
 548         /* probe response/beacon for IBSS */
 549         struct beacon_data __rcu *presp;
 550
 551         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 552         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 553
 554         spinlock_t incomplete_lock;
 555         struct list_head incomplete_stations;
 556
 557         enum {
 558                 IEEE80211_IBSS_MLME_SEARCH,
 559                 IEEE80211_IBSS_MLME_JOINED,
 560         } state;
 561 };
 562
 563 /**
 564  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 565  *
 566  * these declarations define the interface, which enables
 567  * vendor-specific mesh synchronization
 568  *
 569  */
 570 struct ieee802_11_elems;
 571 struct ieee80211_mesh_sync_ops {
 572         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 573                              u16 stype,
 574                              struct ieee80211_mgmt *mgmt,
 575                              struct ieee802_11_elems *elems,
 576                              struct ieee80211_rx_status *rx_status);
 577
 578         /* should be called with beacon_data under RCU read lock */
 579         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 580                             struct beacon_data *beacon);
 581         /* add other framework functions here */
 582 };
 583
 584 struct mesh_csa_settings {
 585         struct rcu_head rcu_head;
 586         struct cfg80211_csa_settings settings;
 587 };
 588
 589 struct ieee80211_if_mesh {
 590         struct timer_list housekeeping_timer;
 591         struct timer_list mesh_path_timer;
 592         struct timer_list mesh_path_root_timer;
 593
 594         unsigned long wrkq_flags;
 595         unsigned long mbss_changed;
 596
 597         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 598         size_t mesh_id_len;
 599         /* Active Path Selection Protocol Identifier */
 600         u8 mesh_pp_id;
 601         /* Active Path Selection Metric Identifier */
 602         u8 mesh_pm_id;
 603         /* Congestion Control Mode Identifier */
 604         u8 mesh_cc_id;
 605         /* Synchronization Protocol Identifier */
 606         u8 mesh_sp_id;
 607         /* Authentication Protocol Identifier */
 608         u8 mesh_auth_id;
 609         /* Local mesh Sequence Number */
 610         u32 sn;
 611         /* Last used PREQ ID */
 612         u32 preq_id;
 613         atomic_t mpaths;
 614         /* Timestamp of last SN update */
 615         unsigned long last_sn_update;
 616         /* Time when it's ok to send next PERR */
 617         unsigned long next_perr;
 618         /* Timestamp of last PREQ sent */
 619         unsigned long last_preq;
 620         struct mesh_rmc *rmc;
 621         spinlock_t mesh_preq_queue_lock;
 622         struct mesh_preq_queue preq_queue;
 623         int preq_queue_len;
 624         struct mesh_stats mshstats;
 625         struct mesh_config mshcfg;
 626         atomic_t estab_plinks;
 627         u32 mesh_seqnum;
 628         bool accepting_plinks;
 629         int num_gates;
 630         struct beacon_data __rcu *beacon;
 631         const u8 *ie;
 632         u8 ie_len;
 633         enum {
 634                 IEEE80211_MESH_SEC_NONE = 0x0,
 635                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 636                 IEEE80211_MESH_SEC_SECURED = 0x2,
 637         } security;
 638         bool user_mpm;
 639         /* Extensible Synchronization Framework */
 640         const struct ieee80211_mesh_sync_ops *sync_ops;
 641         s64 sync_offset_clockdrift_max;
 642         spinlock_t sync_offset_lock;
 643         bool adjusting_tbtt;
 644         /* mesh power save */
 645         enum nl80211_mesh_power_mode nonpeer_pm;
 646         int ps_peers_light_sleep;
 647         int ps_peers_deep_sleep;
 648         struct ps_data ps;
 649         /* Channel Switching Support */
 650         struct mesh_csa_settings __rcu *csa;
 651         enum {
 652                 IEEE80211_MESH_CSA_ROLE_NONE,
 653                 IEEE80211_MESH_CSA_ROLE_INIT,
 654                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 655         } csa_role;
 656         u8 chsw_ttl;
 657         u16 pre_value;
 658
 659         /* offset from skb->data while building IE */
 660         int meshconf_offset;
 661 };
 662
 663 #ifdef CONFIG_MAC80211_MESH
 664 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 665         do { (msh)->mshstats.name++; } while (0)
 666 #else
 667 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 668         do { } while (0)
 669 #endif
 670
 671 /**
 672  * enum ieee80211_sub_if_data_flags - virtual interface flags
 673  *
 674  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 675  * @IEEE80211_SDATA_PROMISC: interface is promisc
 676  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 677  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 678  *      associated stations and deliver multicast frames both
 679  *      back to wireless media and to the local net stack.
 680  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 681  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 682  */
 683 enum ieee80211_sub_if_data_flags {
 684         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 685         IEEE80211_SDATA_PROMISC                 = BIT(1),
 686         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 687         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 688         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 689         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 690 };
 691
 692 /**
 693  * enum ieee80211_sdata_state_bits - virtual interface state bits
 694  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 695  *      mirrors netif_running() but is separate for interface type
 696  *      change handling while the interface is up
 697  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 698  *      mode, so queues are stopped
 699  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 700  *      to offchannel, reset when offchannel returns
 701  */
 702 enum ieee80211_sdata_state_bits {
 703         SDATA_STATE_RUNNING,
 704         SDATA_STATE_OFFCHANNEL,
 705         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 706 };
 707
 708 /**
 709  * enum ieee80211_chanctx_mode - channel context configuration mode
 710  *
 711  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 712  *      multiple interfaces
 713  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 714  *      only by a single interface. This can be used for example for
 715  *      non-fixed channel IBSS.
 716  */
 717 enum ieee80211_chanctx_mode {
 718         IEEE80211_CHANCTX_SHARED,
 719         IEEE80211_CHANCTX_EXCLUSIVE
 720 };
 721
 722 /**
 723  * enum ieee80211_chanctx_replace_state - channel context replacement state
 724  *
 725  * This is used for channel context in-place reservations that require channel
 726  * context switch/swap.
 727  *
 728  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 729  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 730  *      by a (not yet registered) channel context pointed by %replace_ctx.
 731  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 732  *      replaces an existing channel context pointed to by %replace_ctx.
 733  */
 734 enum ieee80211_chanctx_replace_state {
 735         IEEE80211_CHANCTX_REPLACE_NONE,
 736         IEEE80211_CHANCTX_WILL_BE_REPLACED,
 737         IEEE80211_CHANCTX_REPLACES_OTHER,
 738 };
 739
 740 struct ieee80211_chanctx {
 741         struct list_head list;
 742         struct rcu_head rcu_head;
 743
 744         struct list_head assigned_vifs;
 745         struct list_head reserved_vifs;
 746
 747         enum ieee80211_chanctx_replace_state replace_state;
 748         struct ieee80211_chanctx *replace_ctx;
 749
 750         enum ieee80211_chanctx_mode mode;
 751         bool driver_present;
 752
 753         struct ieee80211_chanctx_conf conf;
 754 };
 755
 756 struct mac80211_qos_map {
 757         struct cfg80211_qos_map qos_map;
 758         struct rcu_head rcu_head;
 759 };
 760
 761 struct ieee80211_sub_if_data {
 762         struct list_head list;
 763
 764         struct wireless_dev wdev;
 765
 766         /* keys */
 767         struct list_head key_list;
 768
 769         /* count for keys needing tailroom space allocation */
 770         int crypto_tx_tailroom_needed_cnt;
 771         int crypto_tx_tailroom_pending_dec;
 772         struct delayed_work dec_tailroom_needed_wk;
 773
 774         struct net_device *dev;
 775         struct ieee80211_local *local;
 776
 777         unsigned int flags;
 778
 779         unsigned long state;
 780
 781         int drop_unencrypted;
 782
 783         char name[IFNAMSIZ];
 784
 785         /* Fragment table for host-based reassembly */
 786         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 787         unsigned int fragment_next;
 788
 789         /* TID bitmap for NoAck policy */
 790         u16 noack_map;
 791
 792         /* bit field of ACM bits (BIT(802.1D tag)) */
 793         u8 wmm_acm;
 794
 795         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 796         struct ieee80211_key __rcu *default_unicast_key;
 797         struct ieee80211_key __rcu *default_multicast_key;
 798         struct ieee80211_key __rcu *default_mgmt_key;
 799
 800         u16 sequence_number;
 801         __be16 control_port_protocol;
 802         bool control_port_no_encrypt;
 803         int encrypt_headroom;
 804
 805         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 806         struct mac80211_qos_map __rcu *qos_map;
 807
 808         struct work_struct csa_finalize_work;
 809         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 810         struct cfg80211_chan_def csa_chandef;
 811
 812         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 813         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 814
 815         /* context reservation -- protected with chanctx_mtx */
 816         struct ieee80211_chanctx *reserved_chanctx;
 817         struct cfg80211_chan_def reserved_chandef;
 818         bool reserved_radar_required;
 819         bool reserved_ready;
 820
 821         /* used to reconfigure hardware SM PS */
 822         struct work_struct recalc_smps;
 823
 824         struct work_struct work;
 825         struct sk_buff_head skb_queue;
 826
 827         u8 needed_rx_chains;
 828         enum ieee80211_smps_mode smps_mode;
 829
 830         int user_power_level; /* in dBm */
 831         int ap_power_level; /* in dBm */
 832
 833         bool radar_required;
 834         struct delayed_work dfs_cac_timer_work;
 835
 836         /*
 837          * AP this belongs to: self in AP mode and
 838          * corresponding AP in VLAN mode, NULL for
 839          * all others (might be needed later in IBSS)
 840          */
 841         struct ieee80211_if_ap *bss;
 842
 843         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 844         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 845
 846         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 847         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 848
 849         union {
 850                 struct ieee80211_if_ap ap;
 851                 struct ieee80211_if_wds wds;
 852                 struct ieee80211_if_vlan vlan;
 853                 struct ieee80211_if_managed mgd;
 854                 struct ieee80211_if_ibss ibss;
 855                 struct ieee80211_if_mesh mesh;
 856                 u32 mntr_flags;
 857         } u;
 858
 859 #ifdef CONFIG_MAC80211_DEBUGFS
 860         struct {
 861                 struct dentry *subdir_stations;
 862                 struct dentry *default_unicast_key;
 863                 struct dentry *default_multicast_key;
 864                 struct dentry *default_mgmt_key;
 865         } debugfs;
 866 #endif
 867
 868         /* must be last, dynamically sized area in this! */
 869         struct ieee80211_vif vif;
 870 };
 871
 872 static inline
 873 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 874 {
 875         return container_of(p, struct ieee80211_sub_if_data, vif);
 876 }
 877
 878 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 879         __acquires(&sdata->wdev.mtx)
 880 {
 881         mutex_lock(&sdata->wdev.mtx);
 882         __acquire(&sdata->wdev.mtx);
 883 }
 884
 885 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 886         __releases(&sdata->wdev.mtx)
 887 {
 888         mutex_unlock(&sdata->wdev.mtx);
 889         __release(&sdata->wdev.mtx);
 890 }
 891
 892 #define sdata_dereference(p, sdata) \
 893         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 894
 895 static inline void
 896 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 897 {
 898         lockdep_assert_held(&sdata->wdev.mtx);
 899 }
 900
 901 static inline enum ieee80211_band
 902 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 903 {
 904         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 905         struct ieee80211_chanctx_conf *chanctx_conf;
 906
 907         rcu_read_lock();
 908         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 909         if (!WARN_ON(!chanctx_conf))
 910                 band = chanctx_conf->def.chan->band;
 911         rcu_read_unlock();
 912
 913         return band;
 914 }
 915
 916 static inline int
 917 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 918 {
 919         switch (chandef->width) {
 920         case NL80211_CHAN_WIDTH_5:
 921                 return 2;
 922         case NL80211_CHAN_WIDTH_10:
 923                 return 1;
 924         default:
 925                 return 0;
 926         }
 927 }
 928
 929 static inline int
 930 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 931 {
 932         struct ieee80211_chanctx_conf *chanctx_conf;
 933         int shift = 0;
 934
 935         rcu_read_lock();
 936         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 937         if (chanctx_conf)
 938                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 939         rcu_read_unlock();
 940
 941         return shift;
 942 }
 943
 944 struct ieee80211_rx_agg {
 945         u8 addr[ETH_ALEN];
 946         u16 tid;
 947 };
 948
 949 enum sdata_queue_type {
 950         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 951         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 952         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 953         IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
 954         IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
 955 };
 956
 957 enum {
 958         IEEE80211_RX_MSG        = 1,
 959         IEEE80211_TX_STATUS_MSG = 2,
 960 };
 961
 962 enum queue_stop_reason {
 963         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 964         IEEE80211_QUEUE_STOP_REASON_PS,
 965         IEEE80211_QUEUE_STOP_REASON_CSA,
 966         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 967         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 968         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 969         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
 970         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 971         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
 972
 973         IEEE80211_QUEUE_STOP_REASONS,
 974 };
 975
 976 #ifdef CONFIG_MAC80211_LEDS
 977 struct tpt_led_trigger {
 978         struct led_trigger trig;
 979         char name[32];
 980         const struct ieee80211_tpt_blink *blink_table;
 981         unsigned int blink_table_len;
 982         struct timer_list timer;
 983         unsigned long prev_traffic;
 984         unsigned long tx_bytes, rx_bytes;
 985         unsigned int active, want;
 986         bool running;
 987 };
 988 #endif
 989
 990 /*
 991  * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
 992  *
 993  * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
 994  * certain latency range (in Milliseconds). Each station that uses these
 995  * ranges will have bins to count the amount of frames received in that range.
 996  * The user can configure the ranges via debugfs.
 997  * If ranges is NULL then Tx latency statistics bins are disabled for all
 998  * stations.
 999  *
1000  * @n_ranges: number of ranges that are taken in account
1001  * @ranges: the ranges that the user requested or NULL if disabled.
1002  */
1003 struct ieee80211_tx_latency_bin_ranges {
1004         int n_ranges;
1005         u32 ranges[];
1006 };
1007
1008 /**
1009  * mac80211 scan flags - currently active scan mode
1010  *
1011  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1012  *      well be on the operating channel
1013  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1014  *      determine if we are on the operating channel or not
1015  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1016  *      channel. This should not interrupt normal traffic.
1017  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1018  *      that the scan completed.
1019  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1020  *      a scan complete for an aborted scan.
1021  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1022  *      cancelled.
1023  */
1024 enum {
1025         SCAN_SW_SCANNING,
1026         SCAN_HW_SCANNING,
1027         SCAN_ONCHANNEL_SCANNING,
1028         SCAN_COMPLETED,
1029         SCAN_ABORTED,
1030         SCAN_HW_CANCELLED,
1031 };
1032
1033 /**
1034  * enum mac80211_scan_state - scan state machine states
1035  *
1036  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1037  *      determines if we should keep on scanning or switch back to the
1038  *      operating channel
1039  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1040  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1041  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1042  *      send out data
1043  * @SCAN_RESUME: Resume the scan and scan the next channel
1044  * @SCAN_ABORT: Abort the scan and go back to operating channel
1045  */
1046 enum mac80211_scan_state {
1047         SCAN_DECISION,
1048         SCAN_SET_CHANNEL,
1049         SCAN_SEND_PROBE,
1050         SCAN_SUSPEND,
1051         SCAN_RESUME,
1052         SCAN_ABORT,
1053 };
1054
1055 struct ieee80211_local {
1056         /* embed the driver visible part.
1057          * don't cast (use the static inlines below), but we keep
1058          * it first anyway so they become a no-op */
1059         struct ieee80211_hw hw;
1060
1061         const struct ieee80211_ops *ops;
1062
1063         /*
1064          * private workqueue to mac80211. mac80211 makes this accessible
1065          * via ieee80211_queue_work()
1066          */
1067         struct workqueue_struct *workqueue;
1068
1069         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1070         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1071         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1072         spinlock_t queue_stop_reason_lock;
1073
1074         int open_count;
1075         int monitors, cooked_mntrs;
1076         /* number of interfaces with corresponding FIF_ flags */
1077         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1078             fif_probe_req;
1079         int probe_req_reg;
1080         unsigned int filter_flags; /* FIF_* */
1081
1082         bool wiphy_ciphers_allocated;
1083
1084         bool use_chanctx;
1085
1086         /* protects the aggregated multicast list and filter calls */
1087         spinlock_t filter_lock;
1088
1089         /* used for uploading changed mc list */
1090         struct work_struct reconfig_filter;
1091
1092         /* aggregated multicast list */
1093         struct netdev_hw_addr_list mc_list;
1094
1095         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1096
1097         /*
1098          * suspended is true if we finished all the suspend _and_ we have
1099          * not yet come up from resume. This is to be used by mac80211
1100          * to ensure driver sanity during suspend and mac80211's own
1101          * sanity. It can eventually be used for WoW as well.
1102          */
1103         bool suspended;
1104
1105         /*
1106          * Resuming is true while suspended, but when we're reprogramming the
1107          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1108          * again even though some other parts of the stack are still suspended
1109          * and we still drop received frames to avoid waking the stack.
1110          */
1111         bool resuming;
1112
1113         /*
1114          * quiescing is true during the suspend process _only_ to
1115          * ease timer cancelling etc.
1116          */
1117         bool quiescing;
1118
1119         /* device is started */
1120         bool started;
1121
1122         /* device is during a HW reconfig */
1123         bool in_reconfig;
1124
1125         /* wowlan is enabled -- don't reconfig on resume */
1126         bool wowlan;
1127
1128         /* DFS/radar detection is enabled */
1129         bool radar_detect_enabled;
1130         struct work_struct radar_detected_work;
1131
1132         /* number of RX chains the hardware has */
1133         u8 rx_chains;
1134
1135         int tx_headroom; /* required headroom for hardware/radiotap */
1136
1137         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1138          * added to skb_queue will be processed, but frames in
1139          * skb_queue_unreliable may be dropped if the total length of these
1140          * queues increases over the limit. */
1141 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1142         struct tasklet_struct tasklet;
1143         struct sk_buff_head skb_queue;
1144         struct sk_buff_head skb_queue_unreliable;
1145
1146         spinlock_t rx_path_lock;
1147
1148         /* Station data */
1149         /*
1150          * The mutex only protects the list, hash table and
1151          * counter, reads are done with RCU.
1152          */
1153         struct mutex sta_mtx;
1154         spinlock_t tim_lock;
1155         unsigned long num_sta;
1156         struct list_head sta_list;
1157         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1158         struct timer_list sta_cleanup;
1159         int sta_generation;
1160
1161         /*
1162          * Tx latency statistics parameters for all stations.
1163          * Can enable via debugfs (NULL when disabled).
1164          */
1165         struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1166
1167         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1168         struct tasklet_struct tx_pending_tasklet;
1169
1170         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1171
1172         /* number of interfaces with corresponding IFF_ flags */
1173         atomic_t iff_allmultis, iff_promiscs;
1174
1175         struct rate_control_ref *rate_ctrl;
1176
1177         struct crypto_cipher *wep_tx_tfm;
1178         struct crypto_cipher *wep_rx_tfm;
1179         u32 wep_iv;
1180
1181         /* see iface.c */
1182         struct list_head interfaces;
1183         struct mutex iflist_mtx;
1184
1185         /*
1186          * Key mutex, protects sdata's key_list and sta_info's
1187          * key pointers (write access, they're RCU.)
1188          */
1189         struct mutex key_mtx;
1190
1191         /* mutex for scan and work locking */
1192         struct mutex mtx;
1193
1194         /* Scanning and BSS list */
1195         unsigned long scanning;
1196         struct cfg80211_ssid scan_ssid;
1197         struct cfg80211_scan_request *int_scan_req;
1198         struct cfg80211_scan_request *scan_req;
1199         struct ieee80211_scan_request *hw_scan_req;
1200         struct cfg80211_chan_def scan_chandef;
1201         enum ieee80211_band hw_scan_band;
1202         int scan_channel_idx;
1203         int scan_ies_len;
1204         int hw_scan_ies_bufsize;
1205
1206         struct work_struct sched_scan_stopped_work;
1207         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1208         struct cfg80211_sched_scan_request *sched_scan_req;
1209
1210         unsigned long leave_oper_channel_time;
1211         enum mac80211_scan_state next_scan_state;
1212         struct delayed_work scan_work;
1213         struct ieee80211_sub_if_data __rcu *scan_sdata;
1214         /* For backward compatibility only -- do not use */
1215         struct cfg80211_chan_def _oper_chandef;
1216
1217         /* Temporary remain-on-channel for off-channel operations */
1218         struct ieee80211_channel *tmp_channel;
1219
1220         /* channel contexts */
1221         struct list_head chanctx_list;
1222         struct mutex chanctx_mtx;
1223
1224         /* SNMP counters */
1225         /* dot11CountersTable */
1226         u32 dot11TransmittedFragmentCount;
1227         u32 dot11MulticastTransmittedFrameCount;
1228         u32 dot11FailedCount;
1229         u32 dot11RetryCount;
1230         u32 dot11MultipleRetryCount;
1231         u32 dot11FrameDuplicateCount;
1232         u32 dot11ReceivedFragmentCount;
1233         u32 dot11MulticastReceivedFrameCount;
1234         u32 dot11TransmittedFrameCount;
1235
1236 #ifdef CONFIG_MAC80211_LEDS
1237         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1238         struct tpt_led_trigger *tpt_led_trigger;
1239         char tx_led_name[32], rx_led_name[32],
1240              assoc_led_name[32], radio_led_name[32];
1241 #endif
1242
1243 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1244         /* TX/RX handler statistics */
1245         unsigned int tx_handlers_drop;
1246         unsigned int tx_handlers_queued;
1247         unsigned int tx_handlers_drop_unencrypted;
1248         unsigned int tx_handlers_drop_fragment;
1249         unsigned int tx_handlers_drop_wep;
1250         unsigned int tx_handlers_drop_not_assoc;
1251         unsigned int tx_handlers_drop_unauth_port;
1252         unsigned int rx_handlers_drop;
1253         unsigned int rx_handlers_queued;
1254         unsigned int rx_handlers_drop_nullfunc;
1255         unsigned int rx_handlers_drop_defrag;
1256         unsigned int rx_handlers_drop_short;
1257         unsigned int tx_expand_skb_head;
1258         unsigned int tx_expand_skb_head_cloned;
1259         unsigned int rx_expand_skb_head;
1260         unsigned int rx_expand_skb_head2;
1261         unsigned int rx_handlers_fragments;
1262         unsigned int tx_status_drop;
1263 #define I802_DEBUG_INC(c) (c)++
1264 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1265 #define I802_DEBUG_INC(c) do { } while (0)
1266 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1267
1268
1269         int total_ps_buffered; /* total number of all buffered unicast and
1270                                 * multicast packets for power saving stations
1271                                 */
1272
1273         bool pspolling;
1274         bool offchannel_ps_enabled;
1275         /*
1276          * PS can only be enabled when we have exactly one managed
1277          * interface (and monitors) in PS, this then points there.
1278          */
1279         struct ieee80211_sub_if_data *ps_sdata;
1280         struct work_struct dynamic_ps_enable_work;
1281         struct work_struct dynamic_ps_disable_work;
1282         struct timer_list dynamic_ps_timer;
1283         struct notifier_block network_latency_notifier;
1284         struct notifier_block ifa_notifier;
1285         struct notifier_block ifa6_notifier;
1286
1287         /*
1288          * The dynamic ps timeout configured from user space via WEXT -
1289          * this will override whatever chosen by mac80211 internally.
1290          */
1291         int dynamic_ps_forced_timeout;
1292
1293         int user_power_level; /* in dBm, for all interfaces */
1294
1295         enum ieee80211_smps_mode smps_mode;
1296
1297         struct work_struct restart_work;
1298
1299 #ifdef CONFIG_MAC80211_DEBUGFS
1300         struct local_debugfsdentries {
1301                 struct dentry *rcdir;
1302                 struct dentry *keys;
1303         } debugfs;
1304 #endif
1305
1306         /*
1307          * Remain-on-channel support
1308          */
1309         struct list_head roc_list;
1310         struct work_struct hw_roc_start, hw_roc_done;
1311         unsigned long hw_roc_start_time;
1312         u64 roc_cookie_counter;
1313
1314         struct idr ack_status_frames;
1315         spinlock_t ack_status_lock;
1316
1317         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1318
1319         struct napi_struct *napi;
1320
1321         /* virtual monitor interface */
1322         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1323         struct cfg80211_chan_def monitor_chandef;
1324 };
1325
1326 static inline struct ieee80211_sub_if_data *
1327 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1328 {
1329         return netdev_priv(dev);
1330 }
1331
1332 static inline struct ieee80211_sub_if_data *
1333 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1334 {
1335         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1336 }
1337
1338 /* this struct represents 802.11n's RA/TID combination */
1339 struct ieee80211_ra_tid {
1340         u8 ra[ETH_ALEN];
1341         u16 tid;
1342 };
1343
1344 /* this struct holds the value parsing from channel switch IE  */
1345 struct ieee80211_csa_ie {
1346         struct cfg80211_chan_def chandef;
1347         u8 mode;
1348         u8 count;
1349         u8 ttl;
1350         u16 pre_value;
1351 };
1352
1353 /* Parsed Information Elements */
1354 struct ieee802_11_elems {
1355         const u8 *ie_start;
1356         size_t total_len;
1357
1358         /* pointers to IEs */
1359         const u8 *ssid;
1360         const u8 *supp_rates;
1361         const u8 *ds_params;
1362         const struct ieee80211_tim_ie *tim;
1363         const u8 *challenge;
1364         const u8 *rsn;
1365         const u8 *erp_info;
1366         const u8 *ext_supp_rates;
1367         const u8 *wmm_info;
1368         const u8 *wmm_param;
1369         const struct ieee80211_ht_cap *ht_cap_elem;
1370         const struct ieee80211_ht_operation *ht_operation;
1371         const struct ieee80211_vht_cap *vht_cap_elem;
1372         const struct ieee80211_vht_operation *vht_operation;
1373         const struct ieee80211_meshconf_ie *mesh_config;
1374         const u8 *mesh_id;
1375         const u8 *peering;
1376         const __le16 *awake_window;
1377         const u8 *preq;
1378         const u8 *prep;
1379         const u8 *perr;
1380         const struct ieee80211_rann_ie *rann;
1381         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1382         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1383         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1384         const u8 *country_elem;
1385         const u8 *pwr_constr_elem;
1386         const u8 *cisco_dtpc_elem;
1387         const struct ieee80211_timeout_interval_ie *timeout_int;
1388         const u8 *opmode_notif;
1389         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1390         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1391
1392         /* length of them, respectively */
1393         u8 ssid_len;
1394         u8 supp_rates_len;
1395         u8 tim_len;
1396         u8 challenge_len;
1397         u8 rsn_len;
1398         u8 ext_supp_rates_len;
1399         u8 wmm_info_len;
1400         u8 wmm_param_len;
1401         u8 mesh_id_len;
1402         u8 peering_len;
1403         u8 preq_len;
1404         u8 prep_len;
1405         u8 perr_len;
1406         u8 country_elem_len;
1407
1408         /* whether a parse error occurred while retrieving these elements */
1409         bool parse_error;
1410 };
1411
1412 static inline struct ieee80211_local *hw_to_local(
1413         struct ieee80211_hw *hw)
1414 {
1415         return container_of(hw, struct ieee80211_local, hw);
1416 }
1417
1418
1419 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1420 {
1421         return ether_addr_equal(raddr, addr) ||
1422                is_broadcast_ether_addr(raddr);
1423 }
1424
1425 static inline bool
1426 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1427 {
1428         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1429                      status->flag & RX_FLAG_MACTIME_END);
1430         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1431 }
1432
1433 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1434                                      struct ieee80211_rx_status *status,
1435                                      unsigned int mpdu_len,
1436                                      unsigned int mpdu_offset);
1437 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1438 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1439 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1440                                       u32 changed);
1441 void ieee80211_configure_filter(struct ieee80211_local *local);
1442 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1443
1444 /* STA code */
1445 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1446 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1447                        struct cfg80211_auth_request *req);
1448 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1449                         struct cfg80211_assoc_request *req);
1450 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1451                          struct cfg80211_deauth_request *req);
1452 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1453                            struct cfg80211_disassoc_request *req);
1454 void ieee80211_send_pspoll(struct ieee80211_local *local,
1455                            struct ieee80211_sub_if_data *sdata);
1456 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1457 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1458 int ieee80211_max_network_latency(struct notifier_block *nb,
1459                                   unsigned long data, void *dummy);
1460 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1461 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1462 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1463                                   struct sk_buff *skb);
1464 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1465 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1466 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1467 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1468                                   __le16 fc, bool acked);
1469 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1470 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1471
1472 /* IBSS code */
1473 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1474 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1475 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1476                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1477 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1478                         struct cfg80211_ibss_params *params);
1479 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1480 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1481 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1482                                    struct sk_buff *skb);
1483 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1484                               struct cfg80211_csa_settings *csa_settings);
1485 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1486 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1487
1488 /* mesh code */
1489 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1490 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1491                                    struct sk_buff *skb);
1492 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1493                               struct cfg80211_csa_settings *csa_settings);
1494 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1495
1496 /* scan/BSS handling */
1497 void ieee80211_scan_work(struct work_struct *work);
1498 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1499                                 const u8 *ssid, u8 ssid_len,
1500                                 struct ieee80211_channel *chan,
1501                                 enum nl80211_bss_scan_width scan_width);
1502 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1503                            struct cfg80211_scan_request *req);
1504 void ieee80211_scan_cancel(struct ieee80211_local *local);
1505 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1506 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1507
1508 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1509 struct ieee80211_bss *
1510 ieee80211_bss_info_update(struct ieee80211_local *local,
1511                           struct ieee80211_rx_status *rx_status,
1512                           struct ieee80211_mgmt *mgmt,
1513                           size_t len,
1514                           struct ieee802_11_elems *elems,
1515                           struct ieee80211_channel *channel);
1516 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1517                           struct ieee80211_bss *bss);
1518
1519 /* scheduled scan handling */
1520 int
1521 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1522                                      struct cfg80211_sched_scan_request *req);
1523 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1524                                        struct cfg80211_sched_scan_request *req);
1525 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1526 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1527 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1528
1529 /* off-channel helpers */
1530 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1531 void ieee80211_offchannel_return(struct ieee80211_local *local);
1532 void ieee80211_roc_setup(struct ieee80211_local *local);
1533 void ieee80211_start_next_roc(struct ieee80211_local *local);
1534 void ieee80211_roc_purge(struct ieee80211_local *local,
1535                          struct ieee80211_sub_if_data *sdata);
1536 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1537 void ieee80211_sw_roc_work(struct work_struct *work);
1538 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1539
1540 /* channel switch handling */
1541 void ieee80211_csa_finalize_work(struct work_struct *work);
1542 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1543                              struct cfg80211_csa_settings *params);
1544
1545 /* interface handling */
1546 int ieee80211_iface_init(void);
1547 void ieee80211_iface_exit(void);
1548 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1549                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1550                      struct vif_params *params);
1551 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1552                              enum nl80211_iftype type);
1553 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1554 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1555 u32 ieee80211_idle_off(struct ieee80211_local *local);
1556 void ieee80211_recalc_idle(struct ieee80211_local *local);
1557 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1558                                     const int offset);
1559 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1560 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1561 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1562 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1563
1564 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1565 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1566
1567 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1568 {
1569         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1570 }
1571
1572 /* tx handling */
1573 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1574 void ieee80211_tx_pending(unsigned long data);
1575 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1576                                          struct net_device *dev);
1577 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1578                                        struct net_device *dev);
1579 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1580                               struct sk_buff_head *skbs);
1581
1582 /* HT */
1583 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1584                                      struct ieee80211_sta_ht_cap *ht_cap);
1585 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1586                                        struct ieee80211_supported_band *sband,
1587                                        const struct ieee80211_ht_cap *ht_cap_ie,
1588                                        struct sta_info *sta);
1589 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1590                           const u8 *da, u16 tid,
1591                           u16 initiator, u16 reason_code);
1592 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1593                                enum ieee80211_smps_mode smps, const u8 *da,
1594                                const u8 *bssid);
1595 void ieee80211_request_smps_ap_work(struct work_struct *work);
1596 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1597 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1598                                    enum ieee80211_smps_mode smps_mode_new);
1599
1600 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1601                                      u16 initiator, u16 reason, bool stop);
1602 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1603                                     u16 initiator, u16 reason, bool stop);
1604 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1605                                      u8 dialog_token, u16 timeout,
1606                                      u16 start_seq_num, u16 ba_policy, u16 tid,
1607                                      u16 buf_size, bool tx, bool auto_seq);
1608 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1609                                          enum ieee80211_agg_stop_reason reason);
1610 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1611                              struct sta_info *sta,
1612                              struct ieee80211_mgmt *mgmt, size_t len);
1613 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1614                                   struct sta_info *sta,
1615                                   struct ieee80211_mgmt *mgmt,
1616                                   size_t len);
1617 void ieee80211_process_addba_request(struct ieee80211_local *local,
1618                                      struct sta_info *sta,
1619                                      struct ieee80211_mgmt *mgmt,
1620                                      size_t len);
1621
1622 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1623                                    enum ieee80211_agg_stop_reason reason);
1624 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1625                                     enum ieee80211_agg_stop_reason reason);
1626 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1627 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1628 void ieee80211_ba_session_work(struct work_struct *work);
1629 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1630 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1631
1632 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1633
1634 /* VHT */
1635 void
1636 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1637                                     struct ieee80211_supported_band *sband,
1638                                     const struct ieee80211_vht_cap *vht_cap_ie,
1639                                     struct sta_info *sta);
1640 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1641 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1642 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1643                                   struct sta_info *sta, u8 opmode,
1644                                   enum ieee80211_band band, bool nss_only);
1645 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1646                                  struct sta_info *sta, u8 opmode,
1647                                  enum ieee80211_band band, bool nss_only);
1648 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1649                                       struct ieee80211_sta_vht_cap *vht_cap);
1650
1651 /* Spectrum management */
1652 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1653                                        struct ieee80211_mgmt *mgmt,
1654                                        size_t len);
1655 /**
1656  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1657  * @sdata: the sdata of the interface which has received the frame
1658  * @elems: parsed 802.11 elements received with the frame
1659  * @current_band: indicates the current band
1660  * @sta_flags: contains information about own capabilities and restrictions
1661  *      to decide which channel switch announcements can be accepted. Only the
1662  *      following subset of &enum ieee80211_sta_flags are evaluated:
1663  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1664  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1665  *      %IEEE80211_STA_DISABLE_160MHZ.
1666  * @bssid: the currently connected bssid (for reporting)
1667  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1668         All of them will be filled with if success only.
1669  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1670  */
1671 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1672                                  struct ieee802_11_elems *elems,
1673                                  enum ieee80211_band current_band,
1674                                  u32 sta_flags, u8 *bssid,
1675                                  struct ieee80211_csa_ie *csa_ie);
1676
1677 /* Suspend/resume and hw reconfiguration */
1678 int ieee80211_reconfig(struct ieee80211_local *local);
1679 void ieee80211_stop_device(struct ieee80211_local *local);
1680
1681 int __ieee80211_suspend(struct ieee80211_hw *hw,
1682                         struct cfg80211_wowlan *wowlan);
1683
1684 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1685 {
1686         struct ieee80211_local *local = hw_to_local(hw);
1687
1688         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1689                 "%s: resume with hardware scan still in progress\n",
1690                 wiphy_name(hw->wiphy));
1691
1692         return ieee80211_reconfig(hw_to_local(hw));
1693 }
1694
1695 /* utility functions/constants */
1696 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1697 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1698                         enum nl80211_iftype type);
1699 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1700                              int rate, int erp, int short_preamble,
1701                              int shift);
1702 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1703                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1704                                      gfp_t gfp);
1705 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1706                                bool bss_notify);
1707 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1708                     enum ieee80211_band band);
1709
1710 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1711                                  struct sk_buff *skb, int tid,
1712                                  enum ieee80211_band band);
1713
1714 static inline void
1715 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1716                           struct sk_buff *skb, int tid,
1717                           enum ieee80211_band band)
1718 {
1719         rcu_read_lock();
1720         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1721         rcu_read_unlock();
1722 }
1723
1724 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1725                                         struct sk_buff *skb, int tid)
1726 {
1727         struct ieee80211_chanctx_conf *chanctx_conf;
1728
1729         rcu_read_lock();
1730         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1731         if (WARN_ON(!chanctx_conf)) {
1732                 rcu_read_unlock();
1733                 kfree_skb(skb);
1734                 return;
1735         }
1736
1737         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1738                                     chanctx_conf->def.chan->band);
1739         rcu_read_unlock();
1740 }
1741
1742 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1743                                     struct sk_buff *skb)
1744 {
1745         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1746         ieee80211_tx_skb_tid(sdata, skb, 7);
1747 }
1748
1749 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1750                                struct ieee802_11_elems *elems,
1751                                u64 filter, u32 crc);
1752 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1753                                           bool action,
1754                                           struct ieee802_11_elems *elems)
1755 {
1756         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1757 }
1758
1759 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1760 {
1761         struct sk_buff *tail = skb_peek_tail(frames);
1762         struct ieee80211_rx_status *status;
1763
1764         if (!tail)
1765                 return false;
1766
1767         status = IEEE80211_SKB_RXCB(tail);
1768         if (status->flag & RX_FLAG_AMSDU_MORE)
1769                 return false;
1770
1771         return true;
1772 }
1773
1774 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1775 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1776 void ieee80211_dynamic_ps_timer(unsigned long data);
1777 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1778                              struct ieee80211_sub_if_data *sdata,
1779                              int powersave);
1780 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1781                              struct ieee80211_hdr *hdr);
1782 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1783                              struct ieee80211_hdr *hdr, bool ack);
1784
1785 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1786                                      unsigned long queues,
1787                                      enum queue_stop_reason reason,
1788                                      bool refcounted);
1789 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1790                                struct ieee80211_sub_if_data *sdata,
1791                                enum queue_stop_reason reason);
1792 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1793                                struct ieee80211_sub_if_data *sdata,
1794                                enum queue_stop_reason reason);
1795 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1796                                      unsigned long queues,
1797                                      enum queue_stop_reason reason,
1798                                      bool refcounted);
1799 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1800                                     enum queue_stop_reason reason,
1801                                     bool refcounted);
1802 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1803                                     enum queue_stop_reason reason,
1804                                     bool refcounted);
1805 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1806 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1807                                struct sk_buff *skb);
1808 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1809                                 struct sk_buff_head *skbs);
1810 void ieee80211_flush_queues(struct ieee80211_local *local,
1811                             struct ieee80211_sub_if_data *sdata);
1812
1813 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1814                          u16 transaction, u16 auth_alg, u16 status,
1815                          const u8 *extra, size_t extra_len, const u8 *bssid,
1816                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1817                          u32 tx_flags);
1818 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1819                                     const u8 *bssid, u16 stype, u16 reason,
1820                                     bool send_frame, u8 *frame_buf);
1821 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1822                              size_t buffer_len,
1823                              struct ieee80211_scan_ies *ie_desc,
1824                              const u8 *ie, size_t ie_len,
1825                              u8 bands_used, u32 *rate_masks,
1826                              struct cfg80211_chan_def *chandef);
1827 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1828                                           u8 *dst, u32 ratemask,
1829                                           struct ieee80211_channel *chan,
1830                                           const u8 *ssid, size_t ssid_len,
1831                                           const u8 *ie, size_t ie_len,
1832                                           bool directed);
1833 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1834                               const u8 *ssid, size_t ssid_len,
1835                               const u8 *ie, size_t ie_len,
1836                               u32 ratemask, bool directed, u32 tx_flags,
1837                               struct ieee80211_channel *channel, bool scan);
1838
1839 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1840                             struct ieee802_11_elems *elems,
1841                             enum ieee80211_band band, u32 *basic_rates);
1842 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1843                                  enum ieee80211_smps_mode smps_mode);
1844 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1845                                 enum ieee80211_smps_mode smps_mode);
1846 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1847 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1848
1849 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1850                           const u8 *ids, int n_ids, size_t offset);
1851 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1852 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1853                               u16 cap);
1854 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1855                                const struct cfg80211_chan_def *chandef,
1856                                u16 prot_mode);
1857 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1858                                u32 cap);
1859 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1860                              const struct ieee80211_supported_band *sband,
1861                              const u8 *srates, int srates_len, u32 *rates);
1862 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1863                             struct sk_buff *skb, bool need_basic,
1864                             enum ieee80211_band band);
1865 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1866                                 struct sk_buff *skb, bool need_basic,
1867                                 enum ieee80211_band band);
1868 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1869
1870 /* channel management */
1871 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1872                                   const struct ieee80211_ht_operation *ht_oper,
1873                                   struct cfg80211_chan_def *chandef);
1874 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1875
1876 int __must_check
1877 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1878                           const struct cfg80211_chan_def *chandef,
1879                           enum ieee80211_chanctx_mode mode);
1880 int __must_check
1881 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1882                               const struct cfg80211_chan_def *chandef,
1883                               enum ieee80211_chanctx_mode mode,
1884                               bool radar_required);
1885 int __must_check
1886 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1887 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1888
1889 int __must_check
1890 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1891                                const struct cfg80211_chan_def *chandef,
1892                                u32 *changed);
1893 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1894 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1895 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1896                                          bool clear);
1897 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1898                                struct ieee80211_chanctx *ctx);
1899
1900 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1901                                    struct ieee80211_chanctx *chanctx);
1902 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1903                                       struct ieee80211_chanctx *ctx);
1904
1905 void ieee80211_dfs_cac_timer(unsigned long data);
1906 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1907 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1908 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1909 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1910                               struct cfg80211_csa_settings *csa_settings);
1911
1912 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1913 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1914 const struct ieee80211_cipher_scheme *
1915 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1916                  enum nl80211_iftype iftype);
1917 int ieee80211_cs_headroom(struct ieee80211_local *local,
1918                           struct cfg80211_crypto_settings *crypto,
1919                           enum nl80211_iftype iftype);
1920 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1921                            struct ieee80211_sub_if_data *sdata);
1922 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1923                                  const struct cfg80211_chan_def *chandef,
1924                                  enum ieee80211_chanctx_mode chanmode,
1925                                  u8 radar_detect);
1926 int ieee80211_max_num_channels(struct ieee80211_local *local);
1927
1928 /* TDLS */
1929 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1930                         const u8 *peer, u8 action_code, u8 dialog_token,
1931                         u16 status_code, u32 peer_capability,
1932                         bool initiator, const u8 *extra_ies,
1933                         size_t extra_ies_len);
1934 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1935                         const u8 *peer, enum nl80211_tdls_operation oper);
1936 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
1937
1938 extern const struct ethtool_ops ieee80211_ethtool_ops;
1939
1940 #ifdef CONFIG_MAC80211_NOINLINE
1941 #define debug_noinline noinline
1942 #else
1943 #define debug_noinline
1944 #endif
1945
1946 #endif /* IEEE80211_I_H */