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/iw_handler.h>
  28 #include <net/mac80211.h>
  29 #include "key.h"
  30 #include "sta_info.h"
  31
  32 struct ieee80211_local;
  33
  34 /* Maximum number of broadcast/multicast frames to buffer when some of the
  35  * associated stations are using power saving. */
  36 #define AP_MAX_BC_BUFFER 128
  37
  38 /* Maximum number of frames buffered to all STAs, including multicast frames.
  39  * Note: increasing this limit increases the potential memory requirement. Each
  40  * frame can be up to about 2 kB long. */
  41 #define TOTAL_MAX_TX_BUFFER 512
  42
  43 /* Required encryption head and tailroom */
  44 #define IEEE80211_ENCRYPT_HEADROOM 8
  45 #define IEEE80211_ENCRYPT_TAILROOM 18
  46
  47 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  48  * reception of at least three fragmented frames. This limit can be increased
  49  * by changing this define, at the cost of slower frame reassembly and
  50  * increased memory use (about 2 kB of RAM per entry). */
  51 #define IEEE80211_FRAGMENT_MAX 4
  52
  53 /*
  54  * Time after which we ignore scan results and no longer report/use
  55  * them in any way.
  56  */
  57 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
  58
  59 #define TU_TO_EXP_TIME(x)       (jiffies + usecs_to_jiffies((x) * 1024))
  60
  61 struct ieee80211_fragment_entry {
  62         unsigned long first_frag_time;
  63         unsigned int seq;
  64         unsigned int rx_queue;
  65         unsigned int last_frag;
  66         unsigned int extra_len;
  67         struct sk_buff_head skb_list;
  68         int ccmp; /* Whether fragments were encrypted with CCMP */
  69         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  70 };
  71
  72
  73 struct ieee80211_bss {
  74         /* Yes, this is a hack */
  75         struct cfg80211_bss cbss;
  76
  77         /* don't want to look up all the time */
  78         size_t ssid_len;
  79         u8 ssid[IEEE80211_MAX_SSID_LEN];
  80
  81         u8 dtim_period;
  82
  83         bool wmm_used;
  84
  85         unsigned long last_probe_resp;
  86
  87 #ifdef CONFIG_MAC80211_MESH
  88         u8 *mesh_id;
  89         size_t mesh_id_len;
  90         u8 *mesh_cfg;
  91 #endif
  92
  93 #define IEEE80211_MAX_SUPP_RATES 32
  94         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  95         size_t supp_rates_len;
  96
  97         /*
  98          * During assocation, we save an ERP value from a probe response so
  99          * that we can feed ERP info to the driver when handling the
 100          * association completes. these fields probably won't be up-to-date
 101          * otherwise, you probably don't want to use them.
 102          */
 103         bool has_erp_value;
 104         u8 erp_value;
 105 };
 106
 107 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 108 {
 109 #ifdef CONFIG_MAC80211_MESH
 110         return bss->mesh_cfg;
 111 #endif
 112         return NULL;
 113 }
 114
 115 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 116 {
 117 #ifdef CONFIG_MAC80211_MESH
 118         return bss->mesh_id;
 119 #endif
 120         return NULL;
 121 }
 122
 123 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 124 {
 125 #ifdef CONFIG_MAC80211_MESH
 126         return bss->mesh_id_len;
 127 #endif
 128         return 0;
 129 }
 130
 131
 132 typedef unsigned __bitwise__ ieee80211_tx_result;
 133 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 134 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 135 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 136
 137 #define IEEE80211_TX_FRAGMENTED         BIT(0)
 138 #define IEEE80211_TX_UNICAST            BIT(1)
 139 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 140
 141 struct ieee80211_tx_data {
 142         struct sk_buff *skb;
 143         struct net_device *dev;
 144         struct ieee80211_local *local;
 145         struct ieee80211_sub_if_data *sdata;
 146         struct sta_info *sta;
 147         struct ieee80211_key *key;
 148
 149         struct ieee80211_channel *channel;
 150
 151         u16 ethertype;
 152         unsigned int flags;
 153 };
 154
 155
 156 typedef unsigned __bitwise__ ieee80211_rx_result;
 157 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 158 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 159 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 160 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 161
 162 #define IEEE80211_RX_IN_SCAN            BIT(0)
 163 /* frame is destined to interface currently processed (incl. multicast frames) */
 164 #define IEEE80211_RX_RA_MATCH           BIT(1)
 165 #define IEEE80211_RX_AMSDU              BIT(2)
 166 #define IEEE80211_RX_CMNTR_REPORTED     BIT(3)
 167 #define IEEE80211_RX_FRAGMENTED         BIT(4)
 168
 169 struct ieee80211_rx_data {
 170         struct sk_buff *skb;
 171         struct net_device *dev;
 172         struct ieee80211_local *local;
 173         struct ieee80211_sub_if_data *sdata;
 174         struct sta_info *sta;
 175         struct ieee80211_key *key;
 176         struct ieee80211_rx_status *status;
 177         struct ieee80211_rate *rate;
 178
 179         unsigned int flags;
 180         int sent_ps_buffered;
 181         int queue;
 182         u32 tkip_iv32;
 183         u16 tkip_iv16;
 184 };
 185
 186 struct beacon_data {
 187         u8 *head, *tail;
 188         int head_len, tail_len;
 189         int dtim_period;
 190 };
 191
 192 struct ieee80211_if_ap {
 193         struct beacon_data *beacon;
 194
 195         struct list_head vlans;
 196
 197         /* yes, this looks ugly, but guarantees that we can later use
 198          * bitmap_empty :)
 199          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 200         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 201         struct sk_buff_head ps_bc_buf;
 202         atomic_t num_sta_ps; /* number of stations in PS mode */
 203         int dtim_count;
 204 };
 205
 206 struct ieee80211_if_wds {
 207         struct sta_info *sta;
 208         u8 remote_addr[ETH_ALEN];
 209 };
 210
 211 struct ieee80211_if_vlan {
 212         struct list_head list;
 213 };
 214
 215 struct mesh_stats {
 216         __u32 fwded_frames;             /* Mesh forwarded frames */
 217         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 218         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 219         atomic_t estab_plinks;
 220 };
 221
 222 #define PREQ_Q_F_START          0x1
 223 #define PREQ_Q_F_REFRESH        0x2
 224 struct mesh_preq_queue {
 225         struct list_head list;
 226         u8 dst[ETH_ALEN];
 227         u8 flags;
 228 };
 229
 230 /* flags used in struct ieee80211_if_managed.flags */
 231 #define IEEE80211_STA_SSID_SET          BIT(0)
 232 #define IEEE80211_STA_BSSID_SET         BIT(1)
 233 #define IEEE80211_STA_PREV_BSSID_SET    BIT(2)
 234 #define IEEE80211_STA_AUTHENTICATED     BIT(3)
 235 #define IEEE80211_STA_ASSOCIATED        BIT(4)
 236 #define IEEE80211_STA_PROBEREQ_POLL     BIT(5)
 237 #define IEEE80211_STA_CREATE_IBSS       BIT(6)
 238 #define IEEE80211_STA_CONTROL_PORT      BIT(7)
 239 #define IEEE80211_STA_WMM_ENABLED       BIT(8)
 240 /* hole at 9, please re-use */
 241 #define IEEE80211_STA_AUTO_SSID_SEL     BIT(10)
 242 #define IEEE80211_STA_AUTO_BSSID_SEL    BIT(11)
 243 #define IEEE80211_STA_AUTO_CHANNEL_SEL  BIT(12)
 244 #define IEEE80211_STA_PRIVACY_INVOKED   BIT(13)
 245 #define IEEE80211_STA_TKIP_WEP_USED     BIT(14)
 246 #define IEEE80211_STA_CSA_RECEIVED      BIT(15)
 247 #define IEEE80211_STA_MFP_ENABLED       BIT(16)
 248 #define IEEE80211_STA_EXT_SME           BIT(17)
 249 /* flags for MLME request */
 250 #define IEEE80211_STA_REQ_SCAN 0
 251 #define IEEE80211_STA_REQ_AUTH 1
 252 #define IEEE80211_STA_REQ_RUN  2
 253
 254 /* bitfield of allowed auth algs */
 255 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
 256 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
 257 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
 258 #define IEEE80211_AUTH_ALG_FT BIT(3)
 259
 260 struct ieee80211_if_managed {
 261         struct timer_list timer;
 262         struct timer_list chswitch_timer;
 263         struct work_struct work;
 264         struct work_struct chswitch_work;
 265         struct work_struct beacon_loss_work;
 266
 267         u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
 268
 269         u8 ssid[IEEE80211_MAX_SSID_LEN];
 270         size_t ssid_len;
 271
 272         enum {
 273                 IEEE80211_STA_MLME_DISABLED,
 274                 IEEE80211_STA_MLME_DIRECT_PROBE,
 275                 IEEE80211_STA_MLME_AUTHENTICATE,
 276                 IEEE80211_STA_MLME_ASSOCIATE,
 277                 IEEE80211_STA_MLME_ASSOCIATED,
 278         } state;
 279
 280         u16 aid;
 281         u16 ap_capab, capab;
 282         u8 *extra_ie; /* to be added to the end of AssocReq */
 283         size_t extra_ie_len;
 284
 285         /* The last AssocReq/Resp IEs */
 286         u8 *assocreq_ies, *assocresp_ies;
 287         size_t assocreq_ies_len, assocresp_ies_len;
 288
 289         struct sk_buff_head skb_queue;
 290
 291         int assoc_scan_tries; /* number of scans done pre-association */
 292         int direct_probe_tries; /* retries for direct probes */
 293         int auth_tries; /* retries for auth req */
 294         int assoc_tries; /* retries for assoc req */
 295
 296         unsigned long timers_running; /* used for quiesce/restart */
 297         bool powersave; /* powersave requested for this iface */
 298
 299         unsigned long request;
 300
 301         unsigned long last_probe;
 302         unsigned long last_beacon;
 303
 304         unsigned int flags;
 305
 306         unsigned int auth_algs; /* bitfield of allowed auth algs */
 307         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 308         int auth_transaction;
 309
 310         u32 beacon_crc;
 311
 312         enum {
 313                 IEEE80211_MFP_DISABLED,
 314                 IEEE80211_MFP_OPTIONAL,
 315                 IEEE80211_MFP_REQUIRED
 316         } mfp; /* management frame protection */
 317
 318         int wmm_last_param_set;
 319
 320         /* Extra IE data for management frames */
 321         u8 *sme_auth_ie;
 322         size_t sme_auth_ie_len;
 323 };
 324
 325 enum ieee80211_ibss_request {
 326         IEEE80211_IBSS_REQ_RUN  = 0,
 327 };
 328
 329 struct ieee80211_if_ibss {
 330         struct timer_list timer;
 331         struct work_struct work;
 332
 333         struct sk_buff_head skb_queue;
 334
 335         unsigned long request;
 336         unsigned long last_scan_completed;
 337
 338         bool timer_running;
 339
 340         bool fixed_bssid;
 341         bool fixed_channel;
 342
 343         u8 bssid[ETH_ALEN];
 344         u8 ssid[IEEE80211_MAX_SSID_LEN];
 345         u8 ssid_len, ie_len;
 346         u8 *ie;
 347         struct ieee80211_channel *channel;
 348
 349         unsigned long ibss_join_req;
 350         /* probe response/beacon for IBSS */
 351         struct sk_buff *presp, *skb;
 352
 353         enum {
 354                 IEEE80211_IBSS_MLME_SEARCH,
 355                 IEEE80211_IBSS_MLME_JOINED,
 356         } state;
 357 };
 358
 359 struct ieee80211_if_mesh {
 360         struct work_struct work;
 361         struct timer_list housekeeping_timer;
 362         struct timer_list mesh_path_timer;
 363         struct sk_buff_head skb_queue;
 364
 365         unsigned long timers_running;
 366
 367         bool housekeeping;
 368
 369         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 370         size_t mesh_id_len;
 371         /* Active Path Selection Protocol Identifier */
 372         u8 mesh_pp_id[4];
 373         /* Active Path Selection Metric Identifier */
 374         u8 mesh_pm_id[4];
 375         /* Congestion Control Mode Identifier */
 376         u8 mesh_cc_id[4];
 377         /* Local mesh Destination Sequence Number */
 378         u32 dsn;
 379         /* Last used PREQ ID */
 380         u32 preq_id;
 381         atomic_t mpaths;
 382         /* Timestamp of last DSN update */
 383         unsigned long last_dsn_update;
 384         /* Timestamp of last DSN sent */
 385         unsigned long last_preq;
 386         struct mesh_rmc *rmc;
 387         spinlock_t mesh_preq_queue_lock;
 388         struct mesh_preq_queue preq_queue;
 389         int preq_queue_len;
 390         struct mesh_stats mshstats;
 391         struct mesh_config mshcfg;
 392         u32 mesh_seqnum;
 393         bool accepting_plinks;
 394 };
 395
 396 #ifdef CONFIG_MAC80211_MESH
 397 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 398         do { (msh)->mshstats.name++; } while (0)
 399 #else
 400 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 401         do { } while (0)
 402 #endif
 403
 404 /**
 405  * enum ieee80211_sub_if_data_flags - virtual interface flags
 406  *
 407  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 408  * @IEEE80211_SDATA_PROMISC: interface is promisc
 409  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 410  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 411  *      associated stations and deliver multicast frames both
 412  *      back to wireless media and to the local net stack.
 413  */
 414 enum ieee80211_sub_if_data_flags {
 415         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 416         IEEE80211_SDATA_PROMISC                 = BIT(1),
 417         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 418         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 419 };
 420
 421 struct ieee80211_sub_if_data {
 422         struct list_head list;
 423
 424         struct wireless_dev wdev;
 425
 426         /* keys */
 427         struct list_head key_list;
 428
 429         struct net_device *dev;
 430         struct ieee80211_local *local;
 431
 432         unsigned int flags;
 433
 434         int drop_unencrypted;
 435
 436         /*
 437          * keep track of whether the HT opmode (stored in
 438          * vif.bss_info.ht_operation_mode) is valid.
 439          */
 440         bool ht_opmode_valid;
 441
 442         /* Fragment table for host-based reassembly */
 443         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 444         unsigned int fragment_next;
 445
 446 #define NUM_DEFAULT_KEYS 4
 447 #define NUM_DEFAULT_MGMT_KEYS 2
 448         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 449         struct ieee80211_key *default_key;
 450         struct ieee80211_key *default_mgmt_key;
 451
 452         u16 sequence_number;
 453
 454         /*
 455          * AP this belongs to: self in AP mode and
 456          * corresponding AP in VLAN mode, NULL for
 457          * all others (might be needed later in IBSS)
 458          */
 459         struct ieee80211_if_ap *bss;
 460
 461         int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
 462         int max_ratectrl_rateidx; /* max TX rateidx for rate control */
 463
 464         union {
 465                 struct ieee80211_if_ap ap;
 466                 struct ieee80211_if_wds wds;
 467                 struct ieee80211_if_vlan vlan;
 468                 struct ieee80211_if_managed mgd;
 469                 struct ieee80211_if_ibss ibss;
 470 #ifdef CONFIG_MAC80211_MESH
 471                 struct ieee80211_if_mesh mesh;
 472 #endif
 473                 u32 mntr_flags;
 474         } u;
 475
 476 #ifdef CONFIG_MAC80211_DEBUGFS
 477         struct dentry *debugfsdir;
 478         union {
 479                 struct {
 480                         struct dentry *drop_unencrypted;
 481                         struct dentry *state;
 482                         struct dentry *bssid;
 483                         struct dentry *prev_bssid;
 484                         struct dentry *ssid_len;
 485                         struct dentry *aid;
 486                         struct dentry *ap_capab;
 487                         struct dentry *capab;
 488                         struct dentry *extra_ie_len;
 489                         struct dentry *auth_tries;
 490                         struct dentry *assoc_tries;
 491                         struct dentry *auth_algs;
 492                         struct dentry *auth_alg;
 493                         struct dentry *auth_transaction;
 494                         struct dentry *flags;
 495                         struct dentry *force_unicast_rateidx;
 496                         struct dentry *max_ratectrl_rateidx;
 497                 } sta;
 498                 struct {
 499                         struct dentry *drop_unencrypted;
 500                         struct dentry *num_sta_ps;
 501                         struct dentry *dtim_count;
 502                         struct dentry *force_unicast_rateidx;
 503                         struct dentry *max_ratectrl_rateidx;
 504                         struct dentry *num_buffered_multicast;
 505                 } ap;
 506                 struct {
 507                         struct dentry *drop_unencrypted;
 508                         struct dentry *peer;
 509                         struct dentry *force_unicast_rateidx;
 510                         struct dentry *max_ratectrl_rateidx;
 511                 } wds;
 512                 struct {
 513                         struct dentry *drop_unencrypted;
 514                         struct dentry *force_unicast_rateidx;
 515                         struct dentry *max_ratectrl_rateidx;
 516                 } vlan;
 517                 struct {
 518                         struct dentry *mode;
 519                 } monitor;
 520         } debugfs;
 521         struct {
 522                 struct dentry *default_key;
 523                 struct dentry *default_mgmt_key;
 524         } common_debugfs;
 525
 526 #ifdef CONFIG_MAC80211_MESH
 527         struct dentry *mesh_stats_dir;
 528         struct {
 529                 struct dentry *fwded_frames;
 530                 struct dentry *dropped_frames_ttl;
 531                 struct dentry *dropped_frames_no_route;
 532                 struct dentry *estab_plinks;
 533                 struct timer_list mesh_path_timer;
 534         } mesh_stats;
 535
 536         struct dentry *mesh_config_dir;
 537         struct {
 538                 struct dentry *dot11MeshRetryTimeout;
 539                 struct dentry *dot11MeshConfirmTimeout;
 540                 struct dentry *dot11MeshHoldingTimeout;
 541                 struct dentry *dot11MeshMaxRetries;
 542                 struct dentry *dot11MeshTTL;
 543                 struct dentry *auto_open_plinks;
 544                 struct dentry *dot11MeshMaxPeerLinks;
 545                 struct dentry *dot11MeshHWMPactivePathTimeout;
 546                 struct dentry *dot11MeshHWMPpreqMinInterval;
 547                 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
 548                 struct dentry *dot11MeshHWMPmaxPREQretries;
 549                 struct dentry *path_refresh_time;
 550                 struct dentry *min_discovery_timeout;
 551         } mesh_config;
 552 #endif
 553
 554 #endif
 555         /* must be last, dynamically sized area in this! */
 556         struct ieee80211_vif vif;
 557 };
 558
 559 static inline
 560 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 561 {
 562         return container_of(p, struct ieee80211_sub_if_data, vif);
 563 }
 564
 565 static inline void
 566 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
 567                             u8 mesh_id_len, u8 *mesh_id)
 568 {
 569 #ifdef CONFIG_MAC80211_MESH
 570         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 571         ifmsh->mesh_id_len = mesh_id_len;
 572         memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
 573 #else
 574         WARN_ON(1);
 575 #endif
 576 }
 577
 578 enum {
 579         IEEE80211_RX_MSG        = 1,
 580         IEEE80211_TX_STATUS_MSG = 2,
 581         IEEE80211_DELBA_MSG     = 3,
 582         IEEE80211_ADDBA_MSG     = 4,
 583 };
 584
 585 enum queue_stop_reason {
 586         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 587         IEEE80211_QUEUE_STOP_REASON_PS,
 588         IEEE80211_QUEUE_STOP_REASON_CSA,
 589         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 590         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 591         IEEE80211_QUEUE_STOP_REASON_PENDING,
 592         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 593 };
 594
 595 struct ieee80211_master_priv {
 596         struct ieee80211_local *local;
 597 };
 598
 599 struct ieee80211_local {
 600         /* embed the driver visible part.
 601          * don't cast (use the static inlines below), but we keep
 602          * it first anyway so they become a no-op */
 603         struct ieee80211_hw hw;
 604
 605         const struct ieee80211_ops *ops;
 606
 607         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 608         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 609         spinlock_t queue_stop_reason_lock;
 610
 611         struct net_device *mdev; /* wmaster# - "master" 802.11 device */
 612         int open_count;
 613         int monitors, cooked_mntrs;
 614         /* number of interfaces with corresponding FIF_ flags */
 615         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
 616         unsigned int filter_flags; /* FIF_* */
 617         struct iw_statistics wstats;
 618         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 619
 620         /*
 621          * suspended is true if we finished all the suspend _and_ we have
 622          * not yet come up from resume. This is to be used by mac80211
 623          * to ensure driver sanity during suspend and mac80211's own
 624          * sanity. It can eventually be used for WoW as well.
 625          */
 626         bool suspended;
 627
 628         /*
 629          * quiescing is true during the suspend process _only_ to
 630          * ease timer cancelling etc.
 631          */
 632         bool quiescing;
 633
 634         int tx_headroom; /* required headroom for hardware/radiotap */
 635
 636         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 637          * added to skb_queue will be processed, but frames in
 638          * skb_queue_unreliable may be dropped if the total length of these
 639          * queues increases over the limit. */
 640 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 641         struct tasklet_struct tasklet;
 642         struct sk_buff_head skb_queue;
 643         struct sk_buff_head skb_queue_unreliable;
 644
 645         /* Station data */
 646         /*
 647          * The lock only protects the list, hash, timer and counter
 648          * against manipulation, reads are done in RCU. Additionally,
 649          * the lock protects each BSS's TIM bitmap.
 650          */
 651         spinlock_t sta_lock;
 652         unsigned long num_sta;
 653         struct list_head sta_list;
 654         struct sta_info *sta_hash[STA_HASH_SIZE];
 655         struct timer_list sta_cleanup;
 656
 657         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 658         struct tasklet_struct tx_pending_tasklet;
 659
 660         /*
 661          * This lock is used to prevent concurrent A-MPDU
 662          * session start/stop processing, this thus also
 663          * synchronises the ->ampdu_action() callback to
 664          * drivers and limits it to one at a time.
 665          */
 666         spinlock_t ampdu_lock;
 667
 668         /* number of interfaces with corresponding IFF_ flags */
 669         atomic_t iff_allmultis, iff_promiscs;
 670
 671         struct rate_control_ref *rate_ctrl;
 672
 673         struct crypto_blkcipher *wep_tx_tfm;
 674         struct crypto_blkcipher *wep_rx_tfm;
 675         u32 wep_iv;
 676
 677         /* see iface.c */
 678         struct list_head interfaces;
 679         struct mutex iflist_mtx;
 680
 681         /*
 682          * Key lock, protects sdata's key_list and sta_info's
 683          * key pointers (write access, they're RCU.)
 684          */
 685         spinlock_t key_lock;
 686
 687
 688         /* Scanning and BSS list */
 689         struct mutex scan_mtx;
 690         bool sw_scanning, hw_scanning;
 691         struct cfg80211_ssid scan_ssid;
 692         struct cfg80211_scan_request int_scan_req;
 693         struct cfg80211_scan_request *scan_req;
 694         struct ieee80211_channel *scan_channel;
 695         const u8 *orig_ies;
 696         int orig_ies_len;
 697         int scan_channel_idx;
 698         int scan_ies_len;
 699
 700         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 701         struct delayed_work scan_work;
 702         struct ieee80211_sub_if_data *scan_sdata;
 703         enum nl80211_channel_type oper_channel_type;
 704         struct ieee80211_channel *oper_channel, *csa_channel;
 705
 706         /* SNMP counters */
 707         /* dot11CountersTable */
 708         u32 dot11TransmittedFragmentCount;
 709         u32 dot11MulticastTransmittedFrameCount;
 710         u32 dot11FailedCount;
 711         u32 dot11RetryCount;
 712         u32 dot11MultipleRetryCount;
 713         u32 dot11FrameDuplicateCount;
 714         u32 dot11ReceivedFragmentCount;
 715         u32 dot11MulticastReceivedFrameCount;
 716         u32 dot11TransmittedFrameCount;
 717
 718 #ifdef CONFIG_MAC80211_LEDS
 719         int tx_led_counter, rx_led_counter;
 720         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 721         char tx_led_name[32], rx_led_name[32],
 722              assoc_led_name[32], radio_led_name[32];
 723 #endif
 724
 725 #ifdef CONFIG_MAC80211_DEBUGFS
 726         struct work_struct sta_debugfs_add;
 727 #endif
 728
 729 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 730         /* TX/RX handler statistics */
 731         unsigned int tx_handlers_drop;
 732         unsigned int tx_handlers_queued;
 733         unsigned int tx_handlers_drop_unencrypted;
 734         unsigned int tx_handlers_drop_fragment;
 735         unsigned int tx_handlers_drop_wep;
 736         unsigned int tx_handlers_drop_not_assoc;
 737         unsigned int tx_handlers_drop_unauth_port;
 738         unsigned int rx_handlers_drop;
 739         unsigned int rx_handlers_queued;
 740         unsigned int rx_handlers_drop_nullfunc;
 741         unsigned int rx_handlers_drop_defrag;
 742         unsigned int rx_handlers_drop_short;
 743         unsigned int rx_handlers_drop_passive_scan;
 744         unsigned int tx_expand_skb_head;
 745         unsigned int tx_expand_skb_head_cloned;
 746         unsigned int rx_expand_skb_head;
 747         unsigned int rx_expand_skb_head2;
 748         unsigned int rx_handlers_fragments;
 749         unsigned int tx_status_drop;
 750 #define I802_DEBUG_INC(c) (c)++
 751 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 752 #define I802_DEBUG_INC(c) do { } while (0)
 753 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 754
 755
 756         int total_ps_buffered; /* total number of all buffered unicast and
 757                                 * multicast packets for power saving stations
 758                                 */
 759         int wifi_wme_noack_test;
 760         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 761
 762         bool pspolling;
 763         /*
 764          * PS can only be enabled when we have exactly one managed
 765          * interface (and monitors) in PS, this then points there.
 766          */
 767         struct ieee80211_sub_if_data *ps_sdata;
 768         struct work_struct dynamic_ps_enable_work;
 769         struct work_struct dynamic_ps_disable_work;
 770         struct timer_list dynamic_ps_timer;
 771         struct notifier_block network_latency_notifier;
 772
 773         int user_power_level; /* in dBm */
 774         int power_constr_level; /* in dBm */
 775
 776         struct work_struct restart_work;
 777
 778 #ifdef CONFIG_MAC80211_DEBUGFS
 779         struct local_debugfsdentries {
 780                 struct dentry *rcdir;
 781                 struct dentry *rcname;
 782                 struct dentry *frequency;
 783                 struct dentry *total_ps_buffered;
 784                 struct dentry *wep_iv;
 785                 struct dentry *tsf;
 786                 struct dentry *queues;
 787                 struct dentry *reset;
 788                 struct dentry *noack;
 789                 struct dentry *statistics;
 790                 struct local_debugfsdentries_statsdentries {
 791                         struct dentry *transmitted_fragment_count;
 792                         struct dentry *multicast_transmitted_frame_count;
 793                         struct dentry *failed_count;
 794                         struct dentry *retry_count;
 795                         struct dentry *multiple_retry_count;
 796                         struct dentry *frame_duplicate_count;
 797                         struct dentry *received_fragment_count;
 798                         struct dentry *multicast_received_frame_count;
 799                         struct dentry *transmitted_frame_count;
 800                         struct dentry *wep_undecryptable_count;
 801                         struct dentry *num_scans;
 802 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 803                         struct dentry *tx_handlers_drop;
 804                         struct dentry *tx_handlers_queued;
 805                         struct dentry *tx_handlers_drop_unencrypted;
 806                         struct dentry *tx_handlers_drop_fragment;
 807                         struct dentry *tx_handlers_drop_wep;
 808                         struct dentry *tx_handlers_drop_not_assoc;
 809                         struct dentry *tx_handlers_drop_unauth_port;
 810                         struct dentry *rx_handlers_drop;
 811                         struct dentry *rx_handlers_queued;
 812                         struct dentry *rx_handlers_drop_nullfunc;
 813                         struct dentry *rx_handlers_drop_defrag;
 814                         struct dentry *rx_handlers_drop_short;
 815                         struct dentry *rx_handlers_drop_passive_scan;
 816                         struct dentry *tx_expand_skb_head;
 817                         struct dentry *tx_expand_skb_head_cloned;
 818                         struct dentry *rx_expand_skb_head;
 819                         struct dentry *rx_expand_skb_head2;
 820                         struct dentry *rx_handlers_fragments;
 821                         struct dentry *tx_status_drop;
 822 #endif
 823                         struct dentry *dot11ACKFailureCount;
 824                         struct dentry *dot11RTSFailureCount;
 825                         struct dentry *dot11FCSErrorCount;
 826                         struct dentry *dot11RTSSuccessCount;
 827                 } stats;
 828                 struct dentry *stations;
 829                 struct dentry *keys;
 830         } debugfs;
 831 #endif
 832 };
 833
 834 static inline struct ieee80211_sub_if_data *
 835 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 836 {
 837         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 838
 839         BUG_ON(!local || local->mdev == dev);
 840
 841         return netdev_priv(dev);
 842 }
 843
 844 /* this struct represents 802.11n's RA/TID combination */
 845 struct ieee80211_ra_tid {
 846         u8 ra[ETH_ALEN];
 847         u16 tid;
 848 };
 849
 850 /* Parsed Information Elements */
 851 struct ieee802_11_elems {
 852         u8 *ie_start;
 853         size_t total_len;
 854
 855         /* pointers to IEs */
 856         u8 *ssid;
 857         u8 *supp_rates;
 858         u8 *fh_params;
 859         u8 *ds_params;
 860         u8 *cf_params;
 861         struct ieee80211_tim_ie *tim;
 862         u8 *ibss_params;
 863         u8 *challenge;
 864         u8 *wpa;
 865         u8 *rsn;
 866         u8 *erp_info;
 867         u8 *ext_supp_rates;
 868         u8 *wmm_info;
 869         u8 *wmm_param;
 870         struct ieee80211_ht_cap *ht_cap_elem;
 871         struct ieee80211_ht_info *ht_info_elem;
 872         u8 *mesh_config;
 873         u8 *mesh_id;
 874         u8 *peer_link;
 875         u8 *preq;
 876         u8 *prep;
 877         u8 *perr;
 878         u8 *ch_switch_elem;
 879         u8 *country_elem;
 880         u8 *pwr_constr_elem;
 881         u8 *quiet_elem;         /* first quite element */
 882         u8 *timeout_int;
 883
 884         /* length of them, respectively */
 885         u8 ssid_len;
 886         u8 supp_rates_len;
 887         u8 fh_params_len;
 888         u8 ds_params_len;
 889         u8 cf_params_len;
 890         u8 tim_len;
 891         u8 ibss_params_len;
 892         u8 challenge_len;
 893         u8 wpa_len;
 894         u8 rsn_len;
 895         u8 erp_info_len;
 896         u8 ext_supp_rates_len;
 897         u8 wmm_info_len;
 898         u8 wmm_param_len;
 899         u8 mesh_config_len;
 900         u8 mesh_id_len;
 901         u8 peer_link_len;
 902         u8 preq_len;
 903         u8 prep_len;
 904         u8 perr_len;
 905         u8 ch_switch_elem_len;
 906         u8 country_elem_len;
 907         u8 pwr_constr_elem_len;
 908         u8 quiet_elem_len;
 909         u8 num_of_quiet_elem;   /* can be more the one */
 910         u8 timeout_int_len;
 911 };
 912
 913 static inline struct ieee80211_local *hw_to_local(
 914         struct ieee80211_hw *hw)
 915 {
 916         return container_of(hw, struct ieee80211_local, hw);
 917 }
 918
 919 static inline struct ieee80211_hw *local_to_hw(
 920         struct ieee80211_local *local)
 921 {
 922         return &local->hw;
 923 }
 924
 925
 926 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 927 {
 928         return compare_ether_addr(raddr, addr) == 0 ||
 929                is_broadcast_ether_addr(raddr);
 930 }
 931
 932
 933 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 934 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 935 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 936                                       u32 changed);
 937 void ieee80211_configure_filter(struct ieee80211_local *local);
 938 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 939
 940 /* wireless extensions */
 941 extern const struct iw_handler_def ieee80211_iw_handler_def;
 942
 943 /* STA code */
 944 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 945 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
 946                                           struct sk_buff *skb,
 947                                           struct ieee80211_rx_status *rx_status);
 948 int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
 949 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
 950 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
 951 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
 952 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
 953 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
 954 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
 955 void ieee80211_send_pspoll(struct ieee80211_local *local,
 956                            struct ieee80211_sub_if_data *sdata);
 957 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
 958 int ieee80211_max_network_latency(struct notifier_block *nb,
 959                                   unsigned long data, void *dummy);
 960 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 961                                       struct ieee80211_channel_sw_ie *sw_elem,
 962                                       struct ieee80211_bss *bss);
 963 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
 964 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
 965
 966 /* IBSS code */
 967 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
 968 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
 969 ieee80211_rx_result
 970 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
 971                        struct ieee80211_rx_status *rx_status);
 972 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 973                                         u8 *bssid, u8 *addr, u32 supp_rates);
 974 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 975                         struct cfg80211_ibss_params *params);
 976 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
 977 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
 978 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
 979
 980 /* scan/BSS handling */
 981 void ieee80211_scan_work(struct work_struct *work);
 982 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
 983                                     const u8 *ssid, u8 ssid_len);
 984 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
 985                            struct cfg80211_scan_request *req);
 986 int ieee80211_scan_results(struct ieee80211_local *local,
 987                            struct iw_request_info *info,
 988                            char *buf, size_t len);
 989 void ieee80211_scan_cancel(struct ieee80211_local *local);
 990 ieee80211_rx_result
 991 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
 992                   struct sk_buff *skb,
 993                   struct ieee80211_rx_status *rx_status);
 994 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
 995                                const char *ie, size_t len);
 996
 997 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
 998 struct ieee80211_bss *
 999 ieee80211_bss_info_update(struct ieee80211_local *local,
1000                           struct ieee80211_rx_status *rx_status,
1001                           struct ieee80211_mgmt *mgmt,
1002                           size_t len,
1003                           struct ieee802_11_elems *elems,
1004                           struct ieee80211_channel *channel,
1005                           bool beacon);
1006 struct ieee80211_bss *
1007 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1008                      u8 *ssid, u8 ssid_len);
1009 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1010                           struct ieee80211_bss *bss);
1011 void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
1012                              int freq, u8 *ssid, u8 ssid_len);
1013
1014 /* interface handling */
1015 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1016                      struct net_device **new_dev, enum nl80211_iftype type,
1017                      struct vif_params *params);
1018 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1019                              enum nl80211_iftype type);
1020 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1021 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1022 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1023 void ieee80211_recalc_idle(struct ieee80211_local *local);
1024
1025 /* tx handling */
1026 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1027 void ieee80211_tx_pending(unsigned long data);
1028 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
1029 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1030 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
1031
1032 /* HT */
1033 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1034                                        struct ieee80211_ht_cap *ht_cap_ie,
1035                                        struct ieee80211_sta_ht_cap *ht_cap);
1036 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1037 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1038                           const u8 *da, u16 tid,
1039                           u16 initiator, u16 reason_code);
1040
1041 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1042                                 u16 tid, u16 initiator, u16 reason);
1043 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1044                                     u16 initiator, u16 reason);
1045 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1046 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1047                              struct sta_info *sta,
1048                              struct ieee80211_mgmt *mgmt, size_t len);
1049 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1050                                   struct sta_info *sta,
1051                                   struct ieee80211_mgmt *mgmt,
1052                                   size_t len);
1053 void ieee80211_process_addba_request(struct ieee80211_local *local,
1054                                      struct sta_info *sta,
1055                                      struct ieee80211_mgmt *mgmt,
1056                                      size_t len);
1057
1058 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1059                                    enum ieee80211_back_parties initiator);
1060
1061 /* Spectrum management */
1062 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1063                                        struct ieee80211_mgmt *mgmt,
1064                                        size_t len);
1065
1066 /* Suspend/resume and hw reconfiguration */
1067 int ieee80211_reconfig(struct ieee80211_local *local);
1068
1069 #ifdef CONFIG_PM
1070 int __ieee80211_suspend(struct ieee80211_hw *hw);
1071
1072 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1073 {
1074         return ieee80211_reconfig(hw_to_local(hw));
1075 }
1076 #else
1077 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1078 {
1079         return 0;
1080 }
1081
1082 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1083 {
1084         return 0;
1085 }
1086 #endif
1087
1088 /* utility functions/constants */
1089 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1090 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1091                         enum nl80211_iftype type);
1092 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1093                              int rate, int erp, int short_preamble);
1094 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1095                                      struct ieee80211_hdr *hdr, const u8 *tsc);
1096 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1097 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1098                       int encrypt);
1099 void ieee802_11_parse_elems(u8 *start, size_t len,
1100                             struct ieee802_11_elems *elems);
1101 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1102                                struct ieee802_11_elems *elems,
1103                                u64 filter, u32 crc);
1104 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1105                               enum ieee80211_band band);
1106
1107 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1108 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1109 void ieee80211_dynamic_ps_timer(unsigned long data);
1110 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1111                              struct ieee80211_sub_if_data *sdata,
1112                              int powersave);
1113 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1114                              struct ieee80211_hdr *hdr);
1115 void ieee80211_beacon_loss_work(struct work_struct *work);
1116
1117 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1118                                      enum queue_stop_reason reason);
1119 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1120                                      enum queue_stop_reason reason);
1121 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1122                                     enum queue_stop_reason reason);
1123 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1124                                     enum queue_stop_reason reason);
1125 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1126                                struct sk_buff *skb);
1127 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1128                                struct sk_buff_head *skbs);
1129
1130 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1131                          u16 transaction, u16 auth_alg,
1132                          u8 *extra, size_t extra_len,
1133                          const u8 *bssid, int encrypt);
1134 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1135                              const u8 *ie, size_t ie_len);
1136 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1137                               const u8 *ssid, size_t ssid_len,
1138                               const u8 *ie, size_t ie_len);
1139
1140 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1141                                   const size_t supp_rates_len,
1142                                   const u8 *supp_rates);
1143 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1144                             struct ieee802_11_elems *elems,
1145                             enum ieee80211_band band);
1146
1147 #ifdef CONFIG_MAC80211_NOINLINE
1148 #define debug_noinline noinline
1149 #else
1150 #define debug_noinline
1151 #endif
1152
1153 #endif /* IEEE80211_I_H */