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 2007-2008  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 <net/cfg80211.h>
  27 #include <net/mac80211.h>
  28 #include "key.h"
  29 #include "sta_info.h"
  30
  31 struct ieee80211_local;
  32
  33 /* Maximum number of broadcast/multicast frames to buffer when some of the
  34  * associated stations are using power saving. */
  35 #define AP_MAX_BC_BUFFER 128
  36
  37 /* Maximum number of frames buffered to all STAs, including multicast frames.
  38  * Note: increasing this limit increases the potential memory requirement. Each
  39  * frame can be up to about 2 kB long. */
  40 #define TOTAL_MAX_TX_BUFFER 512
  41
  42 /* Required encryption head and tailroom */
  43 #define IEEE80211_ENCRYPT_HEADROOM 8
  44 #define IEEE80211_ENCRYPT_TAILROOM 18
  45
  46 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  47  * reception of at least three fragmented frames. This limit can be increased
  48  * by changing this define, at the cost of slower frame reassembly and
  49  * increased memory use (about 2 kB of RAM per entry). */
  50 #define IEEE80211_FRAGMENT_MAX 4
  51
  52 /*
  53  * Time after which we ignore scan results and no longer report/use
  54  * them in any way.
  55  */
  56 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
  57
  58 #define TU_TO_EXP_TIME(x)       (jiffies + usecs_to_jiffies((x) * 1024))
  59
  60 struct ieee80211_fragment_entry {
  61         unsigned long first_frag_time;
  62         unsigned int seq;
  63         unsigned int rx_queue;
  64         unsigned int last_frag;
  65         unsigned int extra_len;
  66         struct sk_buff_head skb_list;
  67         int ccmp; /* Whether fragments were encrypted with CCMP */
  68         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  69 };
  70
  71
  72 struct ieee80211_bss {
  73         /* Yes, this is a hack */
  74         struct cfg80211_bss cbss;
  75
  76         /* don't want to look up all the time */
  77         size_t ssid_len;
  78         u8 ssid[IEEE80211_MAX_SSID_LEN];
  79
  80         u8 dtim_period;
  81
  82         bool wmm_used;
  83
  84         unsigned long last_probe_resp;
  85
  86 #ifdef CONFIG_MAC80211_MESH
  87         u8 *mesh_id;
  88         size_t mesh_id_len;
  89         u8 *mesh_cfg;
  90 #endif
  91
  92 #define IEEE80211_MAX_SUPP_RATES 32
  93         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  94         size_t supp_rates_len;
  95
  96         /*
  97          * During assocation, 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
 106 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 107 {
 108 #ifdef CONFIG_MAC80211_MESH
 109         return bss->mesh_cfg;
 110 #endif
 111         return NULL;
 112 }
 113
 114 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 115 {
 116 #ifdef CONFIG_MAC80211_MESH
 117         return bss->mesh_id;
 118 #endif
 119         return NULL;
 120 }
 121
 122 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 123 {
 124 #ifdef CONFIG_MAC80211_MESH
 125         return bss->mesh_id_len;
 126 #endif
 127         return 0;
 128 }
 129
 130
 131 typedef unsigned __bitwise__ ieee80211_tx_result;
 132 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 133 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 134 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 135
 136 #define IEEE80211_TX_FRAGMENTED         BIT(0)
 137 #define IEEE80211_TX_UNICAST            BIT(1)
 138 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 139
 140 struct ieee80211_tx_data {
 141         struct sk_buff *skb;
 142         struct net_device *dev;
 143         struct ieee80211_local *local;
 144         struct ieee80211_sub_if_data *sdata;
 145         struct sta_info *sta;
 146         struct ieee80211_key *key;
 147
 148         struct ieee80211_channel *channel;
 149
 150         u16 ethertype;
 151         unsigned int flags;
 152 };
 153
 154
 155 typedef unsigned __bitwise__ ieee80211_rx_result;
 156 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 157 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 158 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 159 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 160
 161 #define IEEE80211_RX_IN_SCAN            BIT(0)
 162 /* frame is destined to interface currently processed (incl. multicast frames) */
 163 #define IEEE80211_RX_RA_MATCH           BIT(1)
 164 #define IEEE80211_RX_AMSDU              BIT(2)
 165 #define IEEE80211_RX_CMNTR_REPORTED     BIT(3)
 166 #define IEEE80211_RX_FRAGMENTED         BIT(4)
 167
 168 struct ieee80211_rx_data {
 169         struct sk_buff *skb;
 170         struct net_device *dev;
 171         struct ieee80211_local *local;
 172         struct ieee80211_sub_if_data *sdata;
 173         struct sta_info *sta;
 174         struct ieee80211_key *key;
 175         struct ieee80211_rx_status *status;
 176         struct ieee80211_rate *rate;
 177
 178         unsigned int flags;
 179         int sent_ps_buffered;
 180         int queue;
 181         u32 tkip_iv32;
 182         u16 tkip_iv16;
 183 };
 184
 185 struct beacon_data {
 186         u8 *head, *tail;
 187         int head_len, tail_len;
 188         int dtim_period;
 189 };
 190
 191 struct ieee80211_if_ap {
 192         struct beacon_data *beacon;
 193
 194         struct list_head vlans;
 195
 196         /* yes, this looks ugly, but guarantees that we can later use
 197          * bitmap_empty :)
 198          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 199         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 200         struct sk_buff_head ps_bc_buf;
 201         atomic_t num_sta_ps; /* number of stations in PS mode */
 202         int dtim_count;
 203 };
 204
 205 struct ieee80211_if_wds {
 206         struct sta_info *sta;
 207         u8 remote_addr[ETH_ALEN];
 208 };
 209
 210 struct ieee80211_if_vlan {
 211         struct list_head list;
 212 };
 213
 214 struct mesh_stats {
 215         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 216         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 217         __u32 fwded_frames;             /* Mesh total forwarded frames */
 218         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 219         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 220         atomic_t estab_plinks;
 221 };
 222
 223 #define PREQ_Q_F_START          0x1
 224 #define PREQ_Q_F_REFRESH        0x2
 225 struct mesh_preq_queue {
 226         struct list_head list;
 227         u8 dst[ETH_ALEN];
 228         u8 flags;
 229 };
 230
 231 enum ieee80211_mgd_state {
 232         IEEE80211_MGD_STATE_IDLE,
 233         IEEE80211_MGD_STATE_PROBE,
 234         IEEE80211_MGD_STATE_AUTH,
 235         IEEE80211_MGD_STATE_ASSOC,
 236 };
 237
 238 struct ieee80211_mgd_work {
 239         struct list_head list;
 240         struct ieee80211_bss *bss;
 241         int ie_len;
 242         u8 prev_bssid[ETH_ALEN];
 243         u8 ssid[IEEE80211_MAX_SSID_LEN];
 244         u8 ssid_len;
 245         unsigned long timeout;
 246         enum ieee80211_mgd_state state;
 247         u16 auth_alg, auth_transaction;
 248
 249         int tries;
 250
 251         u8 key[WLAN_KEY_LEN_WEP104];
 252         u8 key_len, key_idx;
 253
 254         /* must be last */
 255         u8 ie[0]; /* for auth or assoc frame, not probe */
 256 };
 257
 258 /* flags used in struct ieee80211_if_managed.flags */
 259 enum ieee80211_sta_flags {
 260         IEEE80211_STA_BEACON_POLL       = BIT(0),
 261         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 262         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 263         IEEE80211_STA_WMM_ENABLED       = BIT(3),
 264         IEEE80211_STA_DISABLE_11N       = BIT(4),
 265         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 266         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 267         IEEE80211_STA_NULLFUNC_ACKED    = BIT(7),
 268 };
 269
 270 /* flags for MLME request */
 271 enum ieee80211_sta_request {
 272         IEEE80211_STA_REQ_SCAN,
 273 };
 274
 275 struct ieee80211_if_managed {
 276         struct timer_list timer;
 277         struct timer_list conn_mon_timer;
 278         struct timer_list bcn_mon_timer;
 279         struct timer_list chswitch_timer;
 280         struct work_struct work;
 281         struct work_struct monitor_work;
 282         struct work_struct chswitch_work;
 283         struct work_struct beacon_loss_work;
 284
 285         unsigned long probe_timeout;
 286         int probe_send_count;
 287
 288         struct mutex mtx;
 289         struct ieee80211_bss *associated;
 290         struct ieee80211_mgd_work *old_associate_work;
 291         struct list_head work_list;
 292
 293         u8 bssid[ETH_ALEN];
 294
 295         u16 aid;
 296         u16 capab;
 297
 298         struct sk_buff_head skb_queue;
 299
 300         unsigned long timers_running; /* used for quiesce/restart */
 301         bool powersave; /* powersave requested for this iface */
 302
 303         unsigned long request;
 304
 305         unsigned int flags;
 306
 307         u32 beacon_crc;
 308
 309         enum {
 310                 IEEE80211_MFP_DISABLED,
 311                 IEEE80211_MFP_OPTIONAL,
 312                 IEEE80211_MFP_REQUIRED
 313         } mfp; /* management frame protection */
 314
 315         int wmm_last_param_set;
 316 };
 317
 318 enum ieee80211_ibss_request {
 319         IEEE80211_IBSS_REQ_RUN  = 0,
 320 };
 321
 322 struct ieee80211_if_ibss {
 323         struct timer_list timer;
 324         struct work_struct work;
 325
 326         struct sk_buff_head skb_queue;
 327
 328         unsigned long request;
 329         unsigned long last_scan_completed;
 330
 331         bool timer_running;
 332
 333         bool fixed_bssid;
 334         bool fixed_channel;
 335         bool privacy;
 336
 337         u8 bssid[ETH_ALEN];
 338         u8 ssid[IEEE80211_MAX_SSID_LEN];
 339         u8 ssid_len, ie_len;
 340         u8 *ie;
 341         struct ieee80211_channel *channel;
 342
 343         unsigned long ibss_join_req;
 344         /* probe response/beacon for IBSS */
 345         struct sk_buff *presp, *skb;
 346
 347         enum {
 348                 IEEE80211_IBSS_MLME_SEARCH,
 349                 IEEE80211_IBSS_MLME_JOINED,
 350         } state;
 351 };
 352
 353 struct ieee80211_if_mesh {
 354         struct work_struct work;
 355         struct timer_list housekeeping_timer;
 356         struct timer_list mesh_path_timer;
 357         struct sk_buff_head skb_queue;
 358
 359         unsigned long timers_running;
 360
 361         unsigned long wrkq_flags;
 362
 363         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 364         size_t mesh_id_len;
 365         /* Active Path Selection Protocol Identifier */
 366         u8 mesh_pp_id[4];
 367         /* Active Path Selection Metric Identifier */
 368         u8 mesh_pm_id[4];
 369         /* Congestion Control Mode Identifier */
 370         u8 mesh_cc_id[4];
 371         /* Synchronization Protocol Identifier */
 372         u8 mesh_sp_id[4];
 373         /* Authentication Protocol Identifier */
 374         u8 mesh_auth_id[4];
 375         /* Local mesh Destination Sequence Number */
 376         u32 dsn;
 377         /* Last used PREQ ID */
 378         u32 preq_id;
 379         atomic_t mpaths;
 380         /* Timestamp of last DSN update */
 381         unsigned long last_dsn_update;
 382         /* Timestamp of last DSN sent */
 383         unsigned long last_preq;
 384         struct mesh_rmc *rmc;
 385         spinlock_t mesh_preq_queue_lock;
 386         struct mesh_preq_queue preq_queue;
 387         int preq_queue_len;
 388         struct mesh_stats mshstats;
 389         struct mesh_config mshcfg;
 390         u32 mesh_seqnum;
 391         bool accepting_plinks;
 392 };
 393
 394 #ifdef CONFIG_MAC80211_MESH
 395 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 396         do { (msh)->mshstats.name++; } while (0)
 397 #else
 398 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 399         do { } while (0)
 400 #endif
 401
 402 /**
 403  * enum ieee80211_sub_if_data_flags - virtual interface flags
 404  *
 405  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 406  * @IEEE80211_SDATA_PROMISC: interface is promisc
 407  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 408  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 409  *      associated stations and deliver multicast frames both
 410  *      back to wireless media and to the local net stack.
 411  */
 412 enum ieee80211_sub_if_data_flags {
 413         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 414         IEEE80211_SDATA_PROMISC                 = BIT(1),
 415         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 416         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 417 };
 418
 419 struct ieee80211_sub_if_data {
 420         struct list_head list;
 421
 422         struct wireless_dev wdev;
 423
 424         /* keys */
 425         struct list_head key_list;
 426
 427         struct net_device *dev;
 428         struct ieee80211_local *local;
 429
 430         unsigned int flags;
 431
 432         int drop_unencrypted;
 433
 434         /*
 435          * keep track of whether the HT opmode (stored in
 436          * vif.bss_info.ht_operation_mode) is valid.
 437          */
 438         bool ht_opmode_valid;
 439
 440         /* Fragment table for host-based reassembly */
 441         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 442         unsigned int fragment_next;
 443
 444 #define NUM_DEFAULT_KEYS 4
 445 #define NUM_DEFAULT_MGMT_KEYS 2
 446         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 447         struct ieee80211_key *default_key;
 448         struct ieee80211_key *default_mgmt_key;
 449
 450         u16 sequence_number;
 451
 452         /*
 453          * AP this belongs to: self in AP mode and
 454          * corresponding AP in VLAN mode, NULL for
 455          * all others (might be needed later in IBSS)
 456          */
 457         struct ieee80211_if_ap *bss;
 458
 459         int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
 460         int max_ratectrl_rateidx; /* max TX rateidx for rate control */
 461
 462         union {
 463                 struct ieee80211_if_ap ap;
 464                 struct ieee80211_if_wds wds;
 465                 struct ieee80211_if_vlan vlan;
 466                 struct ieee80211_if_managed mgd;
 467                 struct ieee80211_if_ibss ibss;
 468 #ifdef CONFIG_MAC80211_MESH
 469                 struct ieee80211_if_mesh mesh;
 470 #endif
 471                 u32 mntr_flags;
 472         } u;
 473
 474 #ifdef CONFIG_MAC80211_DEBUGFS
 475         struct dentry *debugfsdir;
 476         union {
 477                 struct {
 478                         struct dentry *drop_unencrypted;
 479                         struct dentry *bssid;
 480                         struct dentry *aid;
 481                         struct dentry *capab;
 482                         struct dentry *force_unicast_rateidx;
 483                         struct dentry *max_ratectrl_rateidx;
 484                 } sta;
 485                 struct {
 486                         struct dentry *drop_unencrypted;
 487                         struct dentry *num_sta_ps;
 488                         struct dentry *dtim_count;
 489                         struct dentry *force_unicast_rateidx;
 490                         struct dentry *max_ratectrl_rateidx;
 491                         struct dentry *num_buffered_multicast;
 492                 } ap;
 493                 struct {
 494                         struct dentry *drop_unencrypted;
 495                         struct dentry *peer;
 496                         struct dentry *force_unicast_rateidx;
 497                         struct dentry *max_ratectrl_rateidx;
 498                 } wds;
 499                 struct {
 500                         struct dentry *drop_unencrypted;
 501                         struct dentry *force_unicast_rateidx;
 502                         struct dentry *max_ratectrl_rateidx;
 503                 } vlan;
 504                 struct {
 505                         struct dentry *mode;
 506                 } monitor;
 507         } debugfs;
 508         struct {
 509                 struct dentry *default_key;
 510                 struct dentry *default_mgmt_key;
 511         } common_debugfs;
 512
 513 #ifdef CONFIG_MAC80211_MESH
 514         struct dentry *mesh_stats_dir;
 515         struct {
 516                 struct dentry *fwded_mcast;
 517                 struct dentry *fwded_unicast;
 518                 struct dentry *fwded_frames;
 519                 struct dentry *dropped_frames_ttl;
 520                 struct dentry *dropped_frames_no_route;
 521                 struct dentry *estab_plinks;
 522                 struct timer_list mesh_path_timer;
 523         } mesh_stats;
 524
 525         struct dentry *mesh_config_dir;
 526         struct {
 527                 struct dentry *dot11MeshRetryTimeout;
 528                 struct dentry *dot11MeshConfirmTimeout;
 529                 struct dentry *dot11MeshHoldingTimeout;
 530                 struct dentry *dot11MeshMaxRetries;
 531                 struct dentry *dot11MeshTTL;
 532                 struct dentry *auto_open_plinks;
 533                 struct dentry *dot11MeshMaxPeerLinks;
 534                 struct dentry *dot11MeshHWMPactivePathTimeout;
 535                 struct dentry *dot11MeshHWMPpreqMinInterval;
 536                 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
 537                 struct dentry *dot11MeshHWMPmaxPREQretries;
 538                 struct dentry *path_refresh_time;
 539                 struct dentry *min_discovery_timeout;
 540         } mesh_config;
 541 #endif
 542
 543 #endif
 544         /* must be last, dynamically sized area in this! */
 545         struct ieee80211_vif vif;
 546 };
 547
 548 static inline
 549 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 550 {
 551         return container_of(p, struct ieee80211_sub_if_data, vif);
 552 }
 553
 554 static inline void
 555 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
 556                             u8 mesh_id_len, u8 *mesh_id)
 557 {
 558 #ifdef CONFIG_MAC80211_MESH
 559         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 560         ifmsh->mesh_id_len = mesh_id_len;
 561         memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
 562 #else
 563         WARN_ON(1);
 564 #endif
 565 }
 566
 567 enum {
 568         IEEE80211_RX_MSG        = 1,
 569         IEEE80211_TX_STATUS_MSG = 2,
 570         IEEE80211_DELBA_MSG     = 3,
 571         IEEE80211_ADDBA_MSG     = 4,
 572 };
 573
 574 enum queue_stop_reason {
 575         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 576         IEEE80211_QUEUE_STOP_REASON_PS,
 577         IEEE80211_QUEUE_STOP_REASON_CSA,
 578         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 579         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 580         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 581 };
 582
 583 /**
 584  * mac80211 scan flags - currently active scan mode
 585  *
 586  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 587  *      well be on the operating channel
 588  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 589  *      determine if we are on the operating channel or not
 590  * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
 591  *      gets only set in conjunction with SCAN_SW_SCANNING
 592  */
 593 enum {
 594         SCAN_SW_SCANNING,
 595         SCAN_HW_SCANNING,
 596         SCAN_OFF_CHANNEL,
 597 };
 598
 599 /**
 600  * enum mac80211_scan_state - scan state machine states
 601  *
 602  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 603  *      determines if we should keep on scanning or switch back to the
 604  *      operating channel
 605  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 606  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 607  * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 608  *      about us leaving the channel and stop all associated STA interfaces
 609  * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 610  *      AP about us being back and restart all associated STA interfaces
 611  */
 612 enum mac80211_scan_state {
 613         SCAN_DECISION,
 614         SCAN_SET_CHANNEL,
 615         SCAN_SEND_PROBE,
 616         SCAN_LEAVE_OPER_CHANNEL,
 617         SCAN_ENTER_OPER_CHANNEL,
 618 };
 619
 620 struct ieee80211_local {
 621         /* embed the driver visible part.
 622          * don't cast (use the static inlines below), but we keep
 623          * it first anyway so they become a no-op */
 624         struct ieee80211_hw hw;
 625
 626         const struct ieee80211_ops *ops;
 627
 628         /*
 629          * private workqueue to mac80211. mac80211 makes this accessible
 630          * via ieee80211_queue_work()
 631          */
 632         struct workqueue_struct *workqueue;
 633
 634         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 635         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 636         spinlock_t queue_stop_reason_lock;
 637
 638         int open_count;
 639         int monitors, cooked_mntrs;
 640         /* number of interfaces with corresponding FIF_ flags */
 641         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
 642         unsigned int filter_flags; /* FIF_* */
 643         struct iw_statistics wstats;
 644
 645         /* protects the aggregated multicast list and filter calls */
 646         spinlock_t filter_lock;
 647
 648         /* used for uploading changed mc list */
 649         struct work_struct reconfig_filter;
 650
 651         /* aggregated multicast list */
 652         struct dev_addr_list *mc_list;
 653         int mc_count;
 654
 655         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 656
 657         /*
 658          * suspended is true if we finished all the suspend _and_ we have
 659          * not yet come up from resume. This is to be used by mac80211
 660          * to ensure driver sanity during suspend and mac80211's own
 661          * sanity. It can eventually be used for WoW as well.
 662          */
 663         bool suspended;
 664
 665         /*
 666          * Resuming is true while suspended, but when we're reprogramming the
 667          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 668          * again even though some other parts of the stack are still suspended
 669          * and we still drop received frames to avoid waking the stack.
 670          */
 671         bool resuming;
 672
 673         /*
 674          * quiescing is true during the suspend process _only_ to
 675          * ease timer cancelling etc.
 676          */
 677         bool quiescing;
 678
 679         /* device is started */
 680         bool started;
 681
 682         int tx_headroom; /* required headroom for hardware/radiotap */
 683
 684         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 685          * added to skb_queue will be processed, but frames in
 686          * skb_queue_unreliable may be dropped if the total length of these
 687          * queues increases over the limit. */
 688 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 689         struct tasklet_struct tasklet;
 690         struct sk_buff_head skb_queue;
 691         struct sk_buff_head skb_queue_unreliable;
 692
 693         /* Station data */
 694         /*
 695          * The lock only protects the list, hash, timer and counter
 696          * against manipulation, reads are done in RCU. Additionally,
 697          * the lock protects each BSS's TIM bitmap.
 698          */
 699         spinlock_t sta_lock;
 700         unsigned long num_sta;
 701         struct list_head sta_list;
 702         struct sta_info *sta_hash[STA_HASH_SIZE];
 703         struct timer_list sta_cleanup;
 704         int sta_generation;
 705
 706         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 707         struct tasklet_struct tx_pending_tasklet;
 708
 709         /*
 710          * This lock is used to prevent concurrent A-MPDU
 711          * session start/stop processing, this thus also
 712          * synchronises the ->ampdu_action() callback to
 713          * drivers and limits it to one at a time.
 714          */
 715         spinlock_t ampdu_lock;
 716
 717         /* number of interfaces with corresponding IFF_ flags */
 718         atomic_t iff_allmultis, iff_promiscs;
 719
 720         struct rate_control_ref *rate_ctrl;
 721
 722         struct crypto_blkcipher *wep_tx_tfm;
 723         struct crypto_blkcipher *wep_rx_tfm;
 724         u32 wep_iv;
 725
 726         /* see iface.c */
 727         struct list_head interfaces;
 728         struct mutex iflist_mtx;
 729
 730         /*
 731          * Key lock, protects sdata's key_list and sta_info's
 732          * key pointers (write access, they're RCU.)
 733          */
 734         spinlock_t key_lock;
 735
 736
 737         /* Scanning and BSS list */
 738         struct mutex scan_mtx;
 739         unsigned long scanning;
 740         struct cfg80211_ssid scan_ssid;
 741         struct cfg80211_scan_request *int_scan_req;
 742         struct cfg80211_scan_request *scan_req;
 743         struct ieee80211_channel *scan_channel;
 744         const u8 *orig_ies;
 745         int orig_ies_len;
 746         int scan_channel_idx;
 747         int scan_ies_len;
 748
 749         enum mac80211_scan_state next_scan_state;
 750         struct delayed_work scan_work;
 751         struct ieee80211_sub_if_data *scan_sdata;
 752         enum nl80211_channel_type oper_channel_type;
 753         struct ieee80211_channel *oper_channel, *csa_channel;
 754
 755         /* SNMP counters */
 756         /* dot11CountersTable */
 757         u32 dot11TransmittedFragmentCount;
 758         u32 dot11MulticastTransmittedFrameCount;
 759         u32 dot11FailedCount;
 760         u32 dot11RetryCount;
 761         u32 dot11MultipleRetryCount;
 762         u32 dot11FrameDuplicateCount;
 763         u32 dot11ReceivedFragmentCount;
 764         u32 dot11MulticastReceivedFrameCount;
 765         u32 dot11TransmittedFrameCount;
 766
 767 #ifdef CONFIG_MAC80211_LEDS
 768         int tx_led_counter, rx_led_counter;
 769         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 770         char tx_led_name[32], rx_led_name[32],
 771              assoc_led_name[32], radio_led_name[32];
 772 #endif
 773
 774 #ifdef CONFIG_MAC80211_DEBUGFS
 775         struct work_struct sta_debugfs_add;
 776 #endif
 777
 778 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 779         /* TX/RX handler statistics */
 780         unsigned int tx_handlers_drop;
 781         unsigned int tx_handlers_queued;
 782         unsigned int tx_handlers_drop_unencrypted;
 783         unsigned int tx_handlers_drop_fragment;
 784         unsigned int tx_handlers_drop_wep;
 785         unsigned int tx_handlers_drop_not_assoc;
 786         unsigned int tx_handlers_drop_unauth_port;
 787         unsigned int rx_handlers_drop;
 788         unsigned int rx_handlers_queued;
 789         unsigned int rx_handlers_drop_nullfunc;
 790         unsigned int rx_handlers_drop_defrag;
 791         unsigned int rx_handlers_drop_short;
 792         unsigned int rx_handlers_drop_passive_scan;
 793         unsigned int tx_expand_skb_head;
 794         unsigned int tx_expand_skb_head_cloned;
 795         unsigned int rx_expand_skb_head;
 796         unsigned int rx_expand_skb_head2;
 797         unsigned int rx_handlers_fragments;
 798         unsigned int tx_status_drop;
 799 #define I802_DEBUG_INC(c) (c)++
 800 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 801 #define I802_DEBUG_INC(c) do { } while (0)
 802 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 803
 804
 805         int total_ps_buffered; /* total number of all buffered unicast and
 806                                 * multicast packets for power saving stations
 807                                 */
 808         int wifi_wme_noack_test;
 809         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 810
 811         bool pspolling;
 812         bool scan_ps_enabled;
 813         /*
 814          * PS can only be enabled when we have exactly one managed
 815          * interface (and monitors) in PS, this then points there.
 816          */
 817         struct ieee80211_sub_if_data *ps_sdata;
 818         struct work_struct dynamic_ps_enable_work;
 819         struct work_struct dynamic_ps_disable_work;
 820         struct timer_list dynamic_ps_timer;
 821         struct notifier_block network_latency_notifier;
 822
 823         int user_power_level; /* in dBm */
 824         int power_constr_level; /* in dBm */
 825
 826         struct work_struct restart_work;
 827
 828 #ifdef CONFIG_MAC80211_DEBUGFS
 829         struct local_debugfsdentries {
 830                 struct dentry *rcdir;
 831                 struct dentry *rcname;
 832                 struct dentry *frequency;
 833                 struct dentry *total_ps_buffered;
 834                 struct dentry *wep_iv;
 835                 struct dentry *tsf;
 836                 struct dentry *queues;
 837                 struct dentry *reset;
 838                 struct dentry *noack;
 839                 struct dentry *statistics;
 840                 struct local_debugfsdentries_statsdentries {
 841                         struct dentry *transmitted_fragment_count;
 842                         struct dentry *multicast_transmitted_frame_count;
 843                         struct dentry *failed_count;
 844                         struct dentry *retry_count;
 845                         struct dentry *multiple_retry_count;
 846                         struct dentry *frame_duplicate_count;
 847                         struct dentry *received_fragment_count;
 848                         struct dentry *multicast_received_frame_count;
 849                         struct dentry *transmitted_frame_count;
 850                         struct dentry *wep_undecryptable_count;
 851                         struct dentry *num_scans;
 852 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 853                         struct dentry *tx_handlers_drop;
 854                         struct dentry *tx_handlers_queued;
 855                         struct dentry *tx_handlers_drop_unencrypted;
 856                         struct dentry *tx_handlers_drop_fragment;
 857                         struct dentry *tx_handlers_drop_wep;
 858                         struct dentry *tx_handlers_drop_not_assoc;
 859                         struct dentry *tx_handlers_drop_unauth_port;
 860                         struct dentry *rx_handlers_drop;
 861                         struct dentry *rx_handlers_queued;
 862                         struct dentry *rx_handlers_drop_nullfunc;
 863                         struct dentry *rx_handlers_drop_defrag;
 864                         struct dentry *rx_handlers_drop_short;
 865                         struct dentry *rx_handlers_drop_passive_scan;
 866                         struct dentry *tx_expand_skb_head;
 867                         struct dentry *tx_expand_skb_head_cloned;
 868                         struct dentry *rx_expand_skb_head;
 869                         struct dentry *rx_expand_skb_head2;
 870                         struct dentry *rx_handlers_fragments;
 871                         struct dentry *tx_status_drop;
 872 #endif
 873                         struct dentry *dot11ACKFailureCount;
 874                         struct dentry *dot11RTSFailureCount;
 875                         struct dentry *dot11FCSErrorCount;
 876                         struct dentry *dot11RTSSuccessCount;
 877                 } stats;
 878                 struct dentry *stations;
 879                 struct dentry *keys;
 880         } debugfs;
 881 #endif
 882 };
 883
 884 static inline struct ieee80211_sub_if_data *
 885 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 886 {
 887         return netdev_priv(dev);
 888 }
 889
 890 /* this struct represents 802.11n's RA/TID combination */
 891 struct ieee80211_ra_tid {
 892         u8 ra[ETH_ALEN];
 893         u16 tid;
 894 };
 895
 896 /* Parsed Information Elements */
 897 struct ieee802_11_elems {
 898         u8 *ie_start;
 899         size_t total_len;
 900
 901         /* pointers to IEs */
 902         u8 *ssid;
 903         u8 *supp_rates;
 904         u8 *fh_params;
 905         u8 *ds_params;
 906         u8 *cf_params;
 907         struct ieee80211_tim_ie *tim;
 908         u8 *ibss_params;
 909         u8 *challenge;
 910         u8 *wpa;
 911         u8 *rsn;
 912         u8 *erp_info;
 913         u8 *ext_supp_rates;
 914         u8 *wmm_info;
 915         u8 *wmm_param;
 916         struct ieee80211_ht_cap *ht_cap_elem;
 917         struct ieee80211_ht_info *ht_info_elem;
 918         u8 *mesh_config;
 919         u8 *mesh_id;
 920         u8 *peer_link;
 921         u8 *preq;
 922         u8 *prep;
 923         u8 *perr;
 924         u8 *ch_switch_elem;
 925         u8 *country_elem;
 926         u8 *pwr_constr_elem;
 927         u8 *quiet_elem;         /* first quite element */
 928         u8 *timeout_int;
 929
 930         /* length of them, respectively */
 931         u8 ssid_len;
 932         u8 supp_rates_len;
 933         u8 fh_params_len;
 934         u8 ds_params_len;
 935         u8 cf_params_len;
 936         u8 tim_len;
 937         u8 ibss_params_len;
 938         u8 challenge_len;
 939         u8 wpa_len;
 940         u8 rsn_len;
 941         u8 erp_info_len;
 942         u8 ext_supp_rates_len;
 943         u8 wmm_info_len;
 944         u8 wmm_param_len;
 945         u8 mesh_config_len;
 946         u8 mesh_id_len;
 947         u8 peer_link_len;
 948         u8 preq_len;
 949         u8 prep_len;
 950         u8 perr_len;
 951         u8 ch_switch_elem_len;
 952         u8 country_elem_len;
 953         u8 pwr_constr_elem_len;
 954         u8 quiet_elem_len;
 955         u8 num_of_quiet_elem;   /* can be more the one */
 956         u8 timeout_int_len;
 957 };
 958
 959 static inline struct ieee80211_local *hw_to_local(
 960         struct ieee80211_hw *hw)
 961 {
 962         return container_of(hw, struct ieee80211_local, hw);
 963 }
 964
 965 static inline struct ieee80211_hw *local_to_hw(
 966         struct ieee80211_local *local)
 967 {
 968         return &local->hw;
 969 }
 970
 971
 972 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 973 {
 974         return compare_ether_addr(raddr, addr) == 0 ||
 975                is_broadcast_ether_addr(raddr);
 976 }
 977
 978
 979 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 980 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 981 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 982                                       u32 changed);
 983 void ieee80211_configure_filter(struct ieee80211_local *local);
 984 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 985
 986 /* STA code */
 987 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 988 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 989                        struct cfg80211_auth_request *req);
 990 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 991                         struct cfg80211_assoc_request *req);
 992 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 993                          struct cfg80211_deauth_request *req,
 994                          void *cookie);
 995 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
 996                            struct cfg80211_disassoc_request *req,
 997                            void *cookie);
 998 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
 999                                           struct sk_buff *skb);
1000 void ieee80211_send_pspoll(struct ieee80211_local *local,
1001                            struct ieee80211_sub_if_data *sdata);
1002 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1003 int ieee80211_max_network_latency(struct notifier_block *nb,
1004                                   unsigned long data, void *dummy);
1005 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1006                                       struct ieee80211_channel_sw_ie *sw_elem,
1007                                       struct ieee80211_bss *bss);
1008 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1009 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1010
1011 /* IBSS code */
1012 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1013 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1014 ieee80211_rx_result
1015 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1016 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1017                                         u8 *bssid, u8 *addr, u32 supp_rates);
1018 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1019                         struct cfg80211_ibss_params *params);
1020 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1021 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1022 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1023
1024 /* scan/BSS handling */
1025 void ieee80211_scan_work(struct work_struct *work);
1026 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1027                                     const u8 *ssid, u8 ssid_len);
1028 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1029                            struct cfg80211_scan_request *req);
1030 void ieee80211_scan_cancel(struct ieee80211_local *local);
1031 ieee80211_rx_result
1032 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1033
1034 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1035 struct ieee80211_bss *
1036 ieee80211_bss_info_update(struct ieee80211_local *local,
1037                           struct ieee80211_rx_status *rx_status,
1038                           struct ieee80211_mgmt *mgmt,
1039                           size_t len,
1040                           struct ieee802_11_elems *elems,
1041                           struct ieee80211_channel *channel,
1042                           bool beacon);
1043 struct ieee80211_bss *
1044 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1045                      u8 *ssid, u8 ssid_len);
1046 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1047                           struct ieee80211_bss *bss);
1048
1049 /* interface handling */
1050 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1051                      struct net_device **new_dev, enum nl80211_iftype type,
1052                      struct vif_params *params);
1053 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1054                              enum nl80211_iftype type);
1055 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1056 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1057 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1058 void ieee80211_recalc_idle(struct ieee80211_local *local);
1059
1060 /* tx handling */
1061 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1062 void ieee80211_tx_pending(unsigned long data);
1063 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1064                                          struct net_device *dev);
1065 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1066                                        struct net_device *dev);
1067
1068 /* HT */
1069 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1070                                        struct ieee80211_ht_cap *ht_cap_ie,
1071                                        struct ieee80211_sta_ht_cap *ht_cap);
1072 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1073 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1074                           const u8 *da, u16 tid,
1075                           u16 initiator, u16 reason_code);
1076
1077 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1078                                 u16 tid, u16 initiator, u16 reason);
1079 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1080                                     u16 initiator, u16 reason);
1081 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1082 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1083                              struct sta_info *sta,
1084                              struct ieee80211_mgmt *mgmt, size_t len);
1085 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1086                                   struct sta_info *sta,
1087                                   struct ieee80211_mgmt *mgmt,
1088                                   size_t len);
1089 void ieee80211_process_addba_request(struct ieee80211_local *local,
1090                                      struct sta_info *sta,
1091                                      struct ieee80211_mgmt *mgmt,
1092                                      size_t len);
1093
1094 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1095                                    enum ieee80211_back_parties initiator);
1096 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1097                                     enum ieee80211_back_parties initiator);
1098
1099 /* Spectrum management */
1100 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1101                                        struct ieee80211_mgmt *mgmt,
1102                                        size_t len);
1103
1104 /* Suspend/resume and hw reconfiguration */
1105 int ieee80211_reconfig(struct ieee80211_local *local);
1106 void ieee80211_stop_device(struct ieee80211_local *local);
1107
1108 #ifdef CONFIG_PM
1109 int __ieee80211_suspend(struct ieee80211_hw *hw);
1110
1111 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1112 {
1113         return ieee80211_reconfig(hw_to_local(hw));
1114 }
1115 #else
1116 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1117 {
1118         return 0;
1119 }
1120
1121 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1122 {
1123         return 0;
1124 }
1125 #endif
1126
1127 /* utility functions/constants */
1128 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1129 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1130                         enum nl80211_iftype type);
1131 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1132                              int rate, int erp, int short_preamble);
1133 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1134                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1135                                      gfp_t gfp);
1136 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1137 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1138                       int encrypt);
1139 void ieee802_11_parse_elems(u8 *start, size_t len,
1140                             struct ieee802_11_elems *elems);
1141 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1142                                struct ieee802_11_elems *elems,
1143                                u64 filter, u32 crc);
1144 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1145                               enum ieee80211_band band);
1146
1147 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1148 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1149 void ieee80211_dynamic_ps_timer(unsigned long data);
1150 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1151                              struct ieee80211_sub_if_data *sdata,
1152                              int powersave);
1153 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1154                              struct ieee80211_hdr *hdr);
1155 void ieee80211_beacon_loss_work(struct work_struct *work);
1156
1157 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1158                                      enum queue_stop_reason reason);
1159 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1160                                      enum queue_stop_reason reason);
1161 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1162                                     enum queue_stop_reason reason);
1163 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1164                                     enum queue_stop_reason reason);
1165 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1166                                struct sk_buff *skb);
1167 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1168                                struct sk_buff_head *skbs);
1169
1170 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1171                          u16 transaction, u16 auth_alg,
1172                          u8 *extra, size_t extra_len, const u8 *bssid,
1173                          const u8 *key, u8 key_len, u8 key_idx);
1174 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1175                              const u8 *ie, size_t ie_len);
1176 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1177                               const u8 *ssid, size_t ssid_len,
1178                               const u8 *ie, size_t ie_len);
1179
1180 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1181                                   const size_t supp_rates_len,
1182                                   const u8 *supp_rates);
1183 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1184                             struct ieee802_11_elems *elems,
1185                             enum ieee80211_band band);
1186
1187 #ifdef CONFIG_MAC80211_NOINLINE
1188 #define debug_noinline noinline
1189 #else
1190 #define debug_noinline
1191 #endif
1192
1193 #endif /* IEEE80211_I_H */