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