net/mac80211/ieee80211_i.h

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005, Devicescape Software, Inc.
   4  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   5  * Copyright 2007-2010  Johannes Berg <johannes@sipsolutions.net>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef IEEE80211_I_H
  13 #define IEEE80211_I_H
  14
  15 #include <linux/kernel.h>
  16 #include <linux/device.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/types.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/etherdevice.h>
  26 #include <net/ieee80211_radiotap.h>
  27 #include <net/cfg80211.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 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  62         (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK |   \
  63          IEEE80211_WMM_IE_STA_QOSINFO_AC_BE |   \
  64          IEEE80211_WMM_IE_STA_QOSINFO_AC_VI |   \
  65          IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
  66
  67 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  68         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  69
  70 struct ieee80211_fragment_entry {
  71         unsigned long first_frag_time;
  72         unsigned int seq;
  73         unsigned int rx_queue;
  74         unsigned int last_frag;
  75         unsigned int extra_len;
  76         struct sk_buff_head skb_list;
  77         int ccmp; /* Whether fragments were encrypted with CCMP */
  78         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  79 };
  80
  81
  82 struct ieee80211_bss {
  83         /* don't want to look up all the time */
  84         size_t ssid_len;
  85         u8 ssid[IEEE80211_MAX_SSID_LEN];
  86
  87         u8 dtim_period;
  88
  89         bool wmm_used;
  90         bool uapsd_supported;
  91
  92         unsigned long last_probe_resp;
  93
  94 #ifdef CONFIG_MAC80211_MESH
  95         u8 *mesh_id;
  96         size_t mesh_id_len;
  97         u8 *mesh_cfg;
  98 #endif
  99
 100 #define IEEE80211_MAX_SUPP_RATES 32
 101         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 102         size_t supp_rates_len;
 103
 104         /*
 105          * During assocation, we save an ERP value from a probe response so
 106          * that we can feed ERP info to the driver when handling the
 107          * association completes. these fields probably won't be up-to-date
 108          * otherwise, you probably don't want to use them.
 109          */
 110         bool has_erp_value;
 111         u8 erp_value;
 112 };
 113
 114 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 115 {
 116 #ifdef CONFIG_MAC80211_MESH
 117         return bss->mesh_cfg;
 118 #endif
 119         return NULL;
 120 }
 121
 122 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 123 {
 124 #ifdef CONFIG_MAC80211_MESH
 125         return bss->mesh_id;
 126 #endif
 127         return NULL;
 128 }
 129
 130 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 131 {
 132 #ifdef CONFIG_MAC80211_MESH
 133         return bss->mesh_id_len;
 134 #endif
 135         return 0;
 136 }
 137
 138
 139 typedef unsigned __bitwise__ ieee80211_tx_result;
 140 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 141 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 142 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 143
 144 #define IEEE80211_TX_FRAGMENTED         BIT(0)
 145 #define IEEE80211_TX_UNICAST            BIT(1)
 146 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 147
 148 struct ieee80211_tx_data {
 149         struct sk_buff *skb;
 150         struct ieee80211_local *local;
 151         struct ieee80211_sub_if_data *sdata;
 152         struct sta_info *sta;
 153         struct ieee80211_key *key;
 154
 155         struct ieee80211_channel *channel;
 156
 157         u16 ethertype;
 158         unsigned int flags;
 159 };
 160
 161
 162 typedef unsigned __bitwise__ ieee80211_rx_result;
 163 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 164 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 165 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 166 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 167
 168 #define IEEE80211_RX_IN_SCAN            BIT(0)
 169 /* frame is destined to interface currently processed (incl. multicast frames) */
 170 #define IEEE80211_RX_RA_MATCH           BIT(1)
 171 #define IEEE80211_RX_AMSDU              BIT(2)
 172 #define IEEE80211_RX_FRAGMENTED         BIT(3)
 173 /* only add flags here that do not change with subframes of an aMPDU */
 174
 175 struct ieee80211_rx_data {
 176         struct sk_buff *skb;
 177         struct ieee80211_local *local;
 178         struct ieee80211_sub_if_data *sdata;
 179         struct sta_info *sta;
 180         struct ieee80211_key *key;
 181
 182         unsigned int flags;
 183         int queue;
 184         u32 tkip_iv32;
 185         u16 tkip_iv16;
 186 };
 187
 188 struct beacon_data {
 189         u8 *head, *tail;
 190         int head_len, tail_len;
 191         int dtim_period;
 192 };
 193
 194 struct ieee80211_if_ap {
 195         struct beacon_data *beacon;
 196
 197         struct list_head vlans;
 198
 199         /* yes, this looks ugly, but guarantees that we can later use
 200          * bitmap_empty :)
 201          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 202         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 203         struct sk_buff_head ps_bc_buf;
 204         atomic_t num_sta_ps; /* number of stations in PS mode */
 205         int dtim_count;
 206 };
 207
 208 struct ieee80211_if_wds {
 209         struct sta_info *sta;
 210         u8 remote_addr[ETH_ALEN];
 211 };
 212
 213 struct ieee80211_if_vlan {
 214         struct list_head list;
 215
 216         /* used for all tx if the VLAN is configured to 4-addr mode */
 217         struct sta_info *sta;
 218 };
 219
 220 struct mesh_stats {
 221         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 222         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 223         __u32 fwded_frames;             /* Mesh total forwarded frames */
 224         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 225         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 226         atomic_t estab_plinks;
 227 };
 228
 229 #define PREQ_Q_F_START          0x1
 230 #define PREQ_Q_F_REFRESH        0x2
 231 struct mesh_preq_queue {
 232         struct list_head list;
 233         u8 dst[ETH_ALEN];
 234         u8 flags;
 235 };
 236
 237 enum ieee80211_work_type {
 238         IEEE80211_WORK_ABORT,
 239         IEEE80211_WORK_DIRECT_PROBE,
 240         IEEE80211_WORK_AUTH,
 241         IEEE80211_WORK_ASSOC,
 242         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 243 };
 244
 245 /**
 246  * enum work_done_result - indicates what to do after work was done
 247  *
 248  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 249  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 250  *      should be requeued.
 251  */
 252 enum work_done_result {
 253         WORK_DONE_DESTROY,
 254         WORK_DONE_REQUEUE,
 255 };
 256
 257 struct ieee80211_work {
 258         struct list_head list;
 259
 260         struct rcu_head rcu_head;
 261
 262         struct ieee80211_sub_if_data *sdata;
 263
 264         enum work_done_result (*done)(struct ieee80211_work *wk,
 265                                       struct sk_buff *skb);
 266
 267         struct ieee80211_channel *chan;
 268         enum nl80211_channel_type chan_type;
 269
 270         unsigned long timeout;
 271         enum ieee80211_work_type type;
 272
 273         u8 filter_ta[ETH_ALEN];
 274
 275         bool started;
 276
 277         union {
 278                 struct {
 279                         int tries;
 280                         u16 algorithm, transaction;
 281                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 282                         u8 ssid_len;
 283                         u8 key[WLAN_KEY_LEN_WEP104];
 284                         u8 key_len, key_idx;
 285                         bool privacy;
 286                 } probe_auth;
 287                 struct {
 288                         struct cfg80211_bss *bss;
 289                         const u8 *supp_rates;
 290                         const u8 *ht_information_ie;
 291                         enum ieee80211_smps_mode smps;
 292                         int tries;
 293                         u16 capability;
 294                         u8 prev_bssid[ETH_ALEN];
 295                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 296                         u8 ssid_len;
 297                         u8 supp_rates_len;
 298                         bool wmm_used, use_11n, uapsd_used;
 299                 } assoc;
 300                 struct {
 301                         u32 duration;
 302                 } remain;
 303         };
 304
 305         int ie_len;
 306         /* must be last */
 307         u8 ie[0];
 308 };
 309
 310 /* flags used in struct ieee80211_if_managed.flags */
 311 enum ieee80211_sta_flags {
 312         IEEE80211_STA_BEACON_POLL       = BIT(0),
 313         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 314         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 315         IEEE80211_STA_DISABLE_11N       = BIT(4),
 316         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 317         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 318         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 319         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 320 };
 321
 322 struct ieee80211_if_managed {
 323         struct timer_list timer;
 324         struct timer_list conn_mon_timer;
 325         struct timer_list bcn_mon_timer;
 326         struct timer_list chswitch_timer;
 327         struct work_struct work;
 328         struct work_struct monitor_work;
 329         struct work_struct chswitch_work;
 330         struct work_struct beacon_loss_work;
 331
 332         unsigned long probe_timeout;
 333         int probe_send_count;
 334
 335         struct mutex mtx;
 336         struct cfg80211_bss *associated;
 337
 338         u8 bssid[ETH_ALEN];
 339
 340         u16 aid;
 341
 342         struct sk_buff_head skb_queue;
 343
 344         unsigned long timers_running; /* used for quiesce/restart */
 345         bool powersave; /* powersave requested for this iface */
 346         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 347                                  ap_smps; /* smps mode AP thinks we're in */
 348
 349         unsigned int flags;
 350
 351         u32 beacon_crc;
 352
 353         enum {
 354                 IEEE80211_MFP_DISABLED,
 355                 IEEE80211_MFP_OPTIONAL,
 356                 IEEE80211_MFP_REQUIRED
 357         } mfp; /* management frame protection */
 358
 359         int wmm_last_param_set;
 360
 361         u8 use_4addr;
 362 };
 363
 364 enum ieee80211_ibss_request {
 365         IEEE80211_IBSS_REQ_RUN  = 0,
 366 };
 367
 368 struct ieee80211_if_ibss {
 369         struct timer_list timer;
 370         struct work_struct work;
 371
 372         struct sk_buff_head skb_queue;
 373
 374         unsigned long request;
 375         unsigned long last_scan_completed;
 376
 377         bool timer_running;
 378
 379         bool fixed_bssid;
 380         bool fixed_channel;
 381         bool privacy;
 382
 383         u8 bssid[ETH_ALEN];
 384         u8 ssid[IEEE80211_MAX_SSID_LEN];
 385         u8 ssid_len, ie_len;
 386         u8 *ie;
 387         struct ieee80211_channel *channel;
 388
 389         unsigned long ibss_join_req;
 390         /* probe response/beacon for IBSS */
 391         struct sk_buff *presp, *skb;
 392
 393         enum {
 394                 IEEE80211_IBSS_MLME_SEARCH,
 395                 IEEE80211_IBSS_MLME_JOINED,
 396         } state;
 397 };
 398
 399 struct ieee80211_if_mesh {
 400         struct work_struct work;
 401         struct timer_list housekeeping_timer;
 402         struct timer_list mesh_path_timer;
 403         struct timer_list mesh_path_root_timer;
 404         struct sk_buff_head skb_queue;
 405
 406         unsigned long timers_running;
 407
 408         unsigned long wrkq_flags;
 409
 410         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 411         size_t mesh_id_len;
 412         /* Active Path Selection Protocol Identifier */
 413         u8 mesh_pp_id;
 414         /* Active Path Selection Metric Identifier */
 415         u8 mesh_pm_id;
 416         /* Congestion Control Mode Identifier */
 417         u8 mesh_cc_id;
 418         /* Synchronization Protocol Identifier */
 419         u8 mesh_sp_id;
 420         /* Authentication Protocol Identifier */
 421         u8 mesh_auth_id;
 422         /* Local mesh Sequence Number */
 423         u32 sn;
 424         /* Last used PREQ ID */
 425         u32 preq_id;
 426         atomic_t mpaths;
 427         /* Timestamp of last SN update */
 428         unsigned long last_sn_update;
 429         /* Timestamp of last SN sent */
 430         unsigned long last_preq;
 431         struct mesh_rmc *rmc;
 432         spinlock_t mesh_preq_queue_lock;
 433         struct mesh_preq_queue preq_queue;
 434         int preq_queue_len;
 435         struct mesh_stats mshstats;
 436         struct mesh_config mshcfg;
 437         u32 mesh_seqnum;
 438         bool accepting_plinks;
 439 };
 440
 441 #ifdef CONFIG_MAC80211_MESH
 442 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 443         do { (msh)->mshstats.name++; } while (0)
 444 #else
 445 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 446         do { } while (0)
 447 #endif
 448
 449 /**
 450  * enum ieee80211_sub_if_data_flags - virtual interface flags
 451  *
 452  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 453  * @IEEE80211_SDATA_PROMISC: interface is promisc
 454  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 455  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 456  *      associated stations and deliver multicast frames both
 457  *      back to wireless media and to the local net stack.
 458  */
 459 enum ieee80211_sub_if_data_flags {
 460         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 461         IEEE80211_SDATA_PROMISC                 = BIT(1),
 462         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 463         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 464 };
 465
 466 struct ieee80211_sub_if_data {
 467         struct list_head list;
 468
 469         struct wireless_dev wdev;
 470
 471         /* keys */
 472         struct list_head key_list;
 473
 474         struct net_device *dev;
 475         struct ieee80211_local *local;
 476
 477         unsigned int flags;
 478
 479         int drop_unencrypted;
 480
 481         char name[IFNAMSIZ];
 482
 483         /*
 484          * keep track of whether the HT opmode (stored in
 485          * vif.bss_info.ht_operation_mode) is valid.
 486          */
 487         bool ht_opmode_valid;
 488
 489         /* Fragment table for host-based reassembly */
 490         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 491         unsigned int fragment_next;
 492
 493 #define NUM_DEFAULT_KEYS 4
 494 #define NUM_DEFAULT_MGMT_KEYS 2
 495         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 496         struct ieee80211_key *default_key;
 497         struct ieee80211_key *default_mgmt_key;
 498
 499         u16 sequence_number;
 500
 501         /*
 502          * AP this belongs to: self in AP mode and
 503          * corresponding AP in VLAN mode, NULL for
 504          * all others (might be needed later in IBSS)
 505          */
 506         struct ieee80211_if_ap *bss;
 507
 508         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 509         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 510
 511         union {
 512                 struct ieee80211_if_ap ap;
 513                 struct ieee80211_if_wds wds;
 514                 struct ieee80211_if_vlan vlan;
 515                 struct ieee80211_if_managed mgd;
 516                 struct ieee80211_if_ibss ibss;
 517 #ifdef CONFIG_MAC80211_MESH
 518                 struct ieee80211_if_mesh mesh;
 519 #endif
 520                 u32 mntr_flags;
 521         } u;
 522
 523 #ifdef CONFIG_MAC80211_DEBUGFS
 524         struct {
 525                 struct dentry *dir;
 526                 struct dentry *default_key;
 527                 struct dentry *default_mgmt_key;
 528         } debugfs;
 529 #endif
 530         /* must be last, dynamically sized area in this! */
 531         struct ieee80211_vif vif;
 532 };
 533
 534 static inline
 535 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 536 {
 537         return container_of(p, struct ieee80211_sub_if_data, vif);
 538 }
 539
 540 static inline void
 541 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
 542                             u8 mesh_id_len, u8 *mesh_id)
 543 {
 544 #ifdef CONFIG_MAC80211_MESH
 545         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 546         ifmsh->mesh_id_len = mesh_id_len;
 547         memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
 548 #else
 549         WARN_ON(1);
 550 #endif
 551 }
 552
 553 enum {
 554         IEEE80211_RX_MSG        = 1,
 555         IEEE80211_TX_STATUS_MSG = 2,
 556         IEEE80211_DELBA_MSG     = 3,
 557         IEEE80211_ADDBA_MSG     = 4,
 558 };
 559
 560 enum queue_stop_reason {
 561         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 562         IEEE80211_QUEUE_STOP_REASON_PS,
 563         IEEE80211_QUEUE_STOP_REASON_CSA,
 564         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 565         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 566         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 567 };
 568
 569 /**
 570  * mac80211 scan flags - currently active scan mode
 571  *
 572  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 573  *      well be on the operating channel
 574  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 575  *      determine if we are on the operating channel or not
 576  * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
 577  *      gets only set in conjunction with SCAN_SW_SCANNING
 578  */
 579 enum {
 580         SCAN_SW_SCANNING,
 581         SCAN_HW_SCANNING,
 582         SCAN_OFF_CHANNEL,
 583 };
 584
 585 /**
 586  * enum mac80211_scan_state - scan state machine states
 587  *
 588  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 589  *      determines if we should keep on scanning or switch back to the
 590  *      operating channel
 591  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 592  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 593  * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 594  *      about us leaving the channel and stop all associated STA interfaces
 595  * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 596  *      AP about us being back and restart all associated STA interfaces
 597  */
 598 enum mac80211_scan_state {
 599         SCAN_DECISION,
 600         SCAN_SET_CHANNEL,
 601         SCAN_SEND_PROBE,
 602         SCAN_LEAVE_OPER_CHANNEL,
 603         SCAN_ENTER_OPER_CHANNEL,
 604 };
 605
 606 struct ieee80211_local {
 607         /* embed the driver visible part.
 608          * don't cast (use the static inlines below), but we keep
 609          * it first anyway so they become a no-op */
 610         struct ieee80211_hw hw;
 611
 612         const struct ieee80211_ops *ops;
 613
 614         /*
 615          * work stuff, potentially off-channel (in the future)
 616          */
 617         struct mutex work_mtx;
 618         struct list_head work_list;
 619         struct timer_list work_timer;
 620         struct work_struct work_work;
 621         struct sk_buff_head work_skb_queue;
 622
 623         /*
 624          * private workqueue to mac80211. mac80211 makes this accessible
 625          * via ieee80211_queue_work()
 626          */
 627         struct workqueue_struct *workqueue;
 628
 629         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 630         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 631         spinlock_t queue_stop_reason_lock;
 632
 633         int open_count;
 634         int monitors, cooked_mntrs;
 635         /* number of interfaces with corresponding FIF_ flags */
 636         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
 637         unsigned int filter_flags; /* FIF_* */
 638
 639         /* protects the aggregated multicast list and filter calls */
 640         spinlock_t filter_lock;
 641
 642         /* used for uploading changed mc list */
 643         struct work_struct reconfig_filter;
 644
 645         /* used to reconfigure hardware SM PS */
 646         struct work_struct recalc_smps;
 647
 648         /* aggregated multicast list */
 649         struct dev_addr_list *mc_list;
 650         int mc_count;
 651
 652         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 653
 654         /*
 655          * suspended is true if we finished all the suspend _and_ we have
 656          * not yet come up from resume. This is to be used by mac80211
 657          * to ensure driver sanity during suspend and mac80211's own
 658          * sanity. It can eventually be used for WoW as well.
 659          */
 660         bool suspended;
 661
 662         /*
 663          * Resuming is true while suspended, but when we're reprogramming the
 664          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 665          * again even though some other parts of the stack are still suspended
 666          * and we still drop received frames to avoid waking the stack.
 667          */
 668         bool resuming;
 669
 670         /*
 671          * quiescing is true during the suspend process _only_ to
 672          * ease timer cancelling etc.
 673          */
 674         bool quiescing;
 675
 676         /* device is started */
 677         bool started;
 678
 679         int tx_headroom; /* required headroom for hardware/radiotap */
 680
 681         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 682          * added to skb_queue will be processed, but frames in
 683          * skb_queue_unreliable may be dropped if the total length of these
 684          * queues increases over the limit. */
 685 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 686         struct tasklet_struct tasklet;
 687         struct sk_buff_head skb_queue;
 688         struct sk_buff_head skb_queue_unreliable;
 689
 690         /* Station data */
 691         /*
 692          * The mutex only protects the list and counter,
 693          * reads are done in RCU.
 694          * Additionally, the lock protects the hash table,
 695          * the pending list and each BSS's TIM bitmap.
 696          */
 697         struct mutex sta_mtx;
 698         spinlock_t sta_lock;
 699         unsigned long num_sta;
 700         struct list_head sta_list, sta_pending_list;
 701         struct sta_info *sta_hash[STA_HASH_SIZE];
 702         struct timer_list sta_cleanup;
 703         struct work_struct sta_finish_work;
 704         int sta_generation;
 705
 706         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 707         struct tasklet_struct tx_pending_tasklet;
 708
 709         /*
 710          * This lock is used to prevent concurrent A-MPDU
 711          * session start/stop processing, this thus also
 712          * synchronises the ->ampdu_action() callback to
 713          * drivers and limits it to one at a time.
 714          */
 715         spinlock_t ampdu_lock;
 716
 717         /* number of interfaces with corresponding IFF_ flags */
 718         atomic_t iff_allmultis, iff_promiscs;
 719
 720         struct rate_control_ref *rate_ctrl;
 721
 722         struct crypto_blkcipher *wep_tx_tfm;
 723         struct crypto_blkcipher *wep_rx_tfm;
 724         u32 wep_iv;
 725
 726         /* see iface.c */
 727         struct list_head interfaces;
 728         struct mutex iflist_mtx;
 729
 730         /*
 731          * Key lock, protects sdata's key_list and sta_info's
 732          * key pointers (write access, they're RCU.)
 733          */
 734         spinlock_t key_lock;
 735
 736
 737         /* Scanning and BSS list */
 738         struct mutex scan_mtx;
 739         unsigned long scanning;
 740         struct cfg80211_ssid scan_ssid;
 741         struct cfg80211_scan_request *int_scan_req;
 742         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 743         struct ieee80211_channel *scan_channel;
 744         enum ieee80211_band hw_scan_band;
 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         /* Temporary remain-on-channel for off-channel operations */
 755         struct ieee80211_channel *tmp_channel;
 756         enum nl80211_channel_type tmp_channel_type;
 757
 758         /* SNMP counters */
 759         /* dot11CountersTable */
 760         u32 dot11TransmittedFragmentCount;
 761         u32 dot11MulticastTransmittedFrameCount;
 762         u32 dot11FailedCount;
 763         u32 dot11RetryCount;
 764         u32 dot11MultipleRetryCount;
 765         u32 dot11FrameDuplicateCount;
 766         u32 dot11ReceivedFragmentCount;
 767         u32 dot11MulticastReceivedFrameCount;
 768         u32 dot11TransmittedFrameCount;
 769
 770 #ifdef CONFIG_MAC80211_LEDS
 771         int tx_led_counter, rx_led_counter;
 772         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 773         char tx_led_name[32], rx_led_name[32],
 774              assoc_led_name[32], radio_led_name[32];
 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         /*
 811          * Bitmask of enabled u-apsd queues,
 812          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 813          * to take effect.
 814          */
 815         unsigned int uapsd_queues;
 816
 817         /*
 818          * Maximum number of buffered frames AP can deliver during a
 819          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 820          * Needs a new association to take effect.
 821          */
 822         unsigned int uapsd_max_sp_len;
 823
 824         bool pspolling;
 825         bool offchannel_ps_enabled;
 826         /*
 827          * PS can only be enabled when we have exactly one managed
 828          * interface (and monitors) in PS, this then points there.
 829          */
 830         struct ieee80211_sub_if_data *ps_sdata;
 831         struct work_struct dynamic_ps_enable_work;
 832         struct work_struct dynamic_ps_disable_work;
 833         struct timer_list dynamic_ps_timer;
 834         struct notifier_block network_latency_notifier;
 835
 836         int user_power_level; /* in dBm */
 837         int power_constr_level; /* in dBm */
 838
 839         enum ieee80211_smps_mode smps_mode;
 840
 841         struct work_struct restart_work;
 842
 843 #ifdef CONFIG_MAC80211_DEBUGFS
 844         struct local_debugfsdentries {
 845                 struct dentry *rcdir;
 846                 struct dentry *stations;
 847                 struct dentry *keys;
 848         } debugfs;
 849 #endif
 850 };
 851
 852 static inline struct ieee80211_sub_if_data *
 853 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 854 {
 855         return netdev_priv(dev);
 856 }
 857
 858 /* this struct represents 802.11n's RA/TID combination along with our vif */
 859 struct ieee80211_ra_tid {
 860         struct ieee80211_vif *vif;
 861         u8 ra[ETH_ALEN];
 862         u16 tid;
 863 };
 864
 865 /* Parsed Information Elements */
 866 struct ieee802_11_elems {
 867         u8 *ie_start;
 868         size_t total_len;
 869
 870         /* pointers to IEs */
 871         u8 *ssid;
 872         u8 *supp_rates;
 873         u8 *fh_params;
 874         u8 *ds_params;
 875         u8 *cf_params;
 876         struct ieee80211_tim_ie *tim;
 877         u8 *ibss_params;
 878         u8 *challenge;
 879         u8 *wpa;
 880         u8 *rsn;
 881         u8 *erp_info;
 882         u8 *ext_supp_rates;
 883         u8 *wmm_info;
 884         u8 *wmm_param;
 885         struct ieee80211_ht_cap *ht_cap_elem;
 886         struct ieee80211_ht_info *ht_info_elem;
 887         struct ieee80211_meshconf_ie *mesh_config;
 888         u8 *mesh_id;
 889         u8 *peer_link;
 890         u8 *preq;
 891         u8 *prep;
 892         u8 *perr;
 893         struct ieee80211_rann_ie *rann;
 894         u8 *ch_switch_elem;
 895         u8 *country_elem;
 896         u8 *pwr_constr_elem;
 897         u8 *quiet_elem;         /* first quite element */
 898         u8 *timeout_int;
 899
 900         /* length of them, respectively */
 901         u8 ssid_len;
 902         u8 supp_rates_len;
 903         u8 fh_params_len;
 904         u8 ds_params_len;
 905         u8 cf_params_len;
 906         u8 tim_len;
 907         u8 ibss_params_len;
 908         u8 challenge_len;
 909         u8 wpa_len;
 910         u8 rsn_len;
 911         u8 erp_info_len;
 912         u8 ext_supp_rates_len;
 913         u8 wmm_info_len;
 914         u8 wmm_param_len;
 915         u8 mesh_id_len;
 916         u8 peer_link_len;
 917         u8 preq_len;
 918         u8 prep_len;
 919         u8 perr_len;
 920         u8 ch_switch_elem_len;
 921         u8 country_elem_len;
 922         u8 pwr_constr_elem_len;
 923         u8 quiet_elem_len;
 924         u8 num_of_quiet_elem;   /* can be more the one */
 925         u8 timeout_int_len;
 926 };
 927
 928 static inline struct ieee80211_local *hw_to_local(
 929         struct ieee80211_hw *hw)
 930 {
 931         return container_of(hw, struct ieee80211_local, hw);
 932 }
 933
 934 static inline struct ieee80211_hw *local_to_hw(
 935         struct ieee80211_local *local)
 936 {
 937         return &local->hw;
 938 }
 939
 940
 941 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 942 {
 943         return compare_ether_addr(raddr, addr) == 0 ||
 944                is_broadcast_ether_addr(raddr);
 945 }
 946
 947
 948 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 949 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 950 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 951                                       u32 changed);
 952 void ieee80211_configure_filter(struct ieee80211_local *local);
 953 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 954
 955 extern bool ieee80211_disable_40mhz_24ghz;
 956
 957 /* STA code */
 958 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 959 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 960                        struct cfg80211_auth_request *req);
 961 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 962                         struct cfg80211_assoc_request *req);
 963 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 964                          struct cfg80211_deauth_request *req,
 965                          void *cookie);
 966 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
 967                            struct cfg80211_disassoc_request *req,
 968                            void *cookie);
 969 int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata,
 970                          struct ieee80211_channel *chan,
 971                          enum nl80211_channel_type channel_type,
 972                          const u8 *buf, size_t len, u64 *cookie);
 973 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
 974                                           struct sk_buff *skb);
 975 void ieee80211_send_pspoll(struct ieee80211_local *local,
 976                            struct ieee80211_sub_if_data *sdata);
 977 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
 978 int ieee80211_max_network_latency(struct notifier_block *nb,
 979                                   unsigned long data, void *dummy);
 980 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 981                                       struct ieee80211_channel_sw_ie *sw_elem,
 982                                       struct ieee80211_bss *bss);
 983 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
 984 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
 985
 986 /* IBSS code */
 987 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
 988 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
 989 ieee80211_rx_result
 990 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
 991 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 992                                         u8 *bssid, u8 *addr, u32 supp_rates,
 993                                         gfp_t gfp);
 994 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 995                         struct cfg80211_ibss_params *params);
 996 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
 997 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
 998 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
 999
1000 /* scan/BSS handling */
1001 void ieee80211_scan_work(struct work_struct *work);
1002 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1003                                     const u8 *ssid, u8 ssid_len);
1004 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1005                            struct cfg80211_scan_request *req);
1006 void ieee80211_scan_cancel(struct ieee80211_local *local);
1007 ieee80211_rx_result
1008 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1009
1010 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1011 struct ieee80211_bss *
1012 ieee80211_bss_info_update(struct ieee80211_local *local,
1013                           struct ieee80211_rx_status *rx_status,
1014                           struct ieee80211_mgmt *mgmt,
1015                           size_t len,
1016                           struct ieee802_11_elems *elems,
1017                           struct ieee80211_channel *channel,
1018                           bool beacon);
1019 struct ieee80211_bss *
1020 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1021                      u8 *ssid, u8 ssid_len);
1022 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1023                           struct ieee80211_bss *bss);
1024
1025 /* off-channel helpers */
1026 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
1027 void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
1028 void ieee80211_offchannel_return(struct ieee80211_local *local,
1029                                  bool enable_beaconing);
1030
1031 /* interface handling */
1032 int ieee80211_iface_init(void);
1033 void ieee80211_iface_exit(void);
1034 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1035                      struct net_device **new_dev, enum nl80211_iftype type,
1036                      struct vif_params *params);
1037 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1038                              enum nl80211_iftype type);
1039 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1040 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1041 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1042 void ieee80211_recalc_idle(struct ieee80211_local *local);
1043
1044 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1045 {
1046         return netif_running(sdata->dev);
1047 }
1048
1049 /* tx handling */
1050 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1051 void ieee80211_tx_pending(unsigned long data);
1052 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1053                                          struct net_device *dev);
1054 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1055                                        struct net_device *dev);
1056
1057 /*
1058  * radiotap header for status frames
1059  */
1060 struct ieee80211_tx_status_rtap_hdr {
1061         struct ieee80211_radiotap_header hdr;
1062         u8 rate;
1063         u8 padding_for_rate;
1064         __le16 tx_flags;
1065         u8 data_retries;
1066 } __attribute__ ((packed));
1067
1068
1069 /* HT */
1070 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1071                                        struct ieee80211_ht_cap *ht_cap_ie,
1072                                        struct ieee80211_sta_ht_cap *ht_cap);
1073 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1074 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1075                           const u8 *da, u16 tid,
1076                           u16 initiator, u16 reason_code);
1077 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1078                                enum ieee80211_smps_mode smps, const u8 *da,
1079                                const u8 *bssid);
1080
1081 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1082                                 u16 tid, u16 initiator, u16 reason);
1083 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1084                                     u16 initiator, u16 reason);
1085 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1086 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1087                              struct sta_info *sta,
1088                              struct ieee80211_mgmt *mgmt, size_t len);
1089 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1090                                   struct sta_info *sta,
1091                                   struct ieee80211_mgmt *mgmt,
1092                                   size_t len);
1093 void ieee80211_process_addba_request(struct ieee80211_local *local,
1094                                      struct sta_info *sta,
1095                                      struct ieee80211_mgmt *mgmt,
1096                                      size_t len);
1097
1098 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1099                                    enum ieee80211_back_parties initiator);
1100 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1101                                     enum ieee80211_back_parties initiator);
1102
1103 /* Spectrum management */
1104 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1105                                        struct ieee80211_mgmt *mgmt,
1106                                        size_t len);
1107
1108 /* Suspend/resume and hw reconfiguration */
1109 int ieee80211_reconfig(struct ieee80211_local *local);
1110 void ieee80211_stop_device(struct ieee80211_local *local);
1111
1112 #ifdef CONFIG_PM
1113 int __ieee80211_suspend(struct ieee80211_hw *hw);
1114
1115 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1116 {
1117         return ieee80211_reconfig(hw_to_local(hw));
1118 }
1119 #else
1120 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1121 {
1122         return 0;
1123 }
1124
1125 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1126 {
1127         return 0;
1128 }
1129 #endif
1130
1131 /* utility functions/constants */
1132 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1133 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1134                         enum nl80211_iftype type);
1135 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1136                              int rate, int erp, int short_preamble);
1137 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1138                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1139                                      gfp_t gfp);
1140 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1141 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1142 void ieee802_11_parse_elems(u8 *start, size_t len,
1143                             struct ieee802_11_elems *elems);
1144 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1145                                struct ieee802_11_elems *elems,
1146                                u64 filter, u32 crc);
1147 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1148                               enum ieee80211_band band);
1149
1150 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1151 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1152 void ieee80211_dynamic_ps_timer(unsigned long data);
1153 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1154                              struct ieee80211_sub_if_data *sdata,
1155                              int powersave);
1156 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1157                              struct ieee80211_hdr *hdr);
1158 void ieee80211_beacon_loss_work(struct work_struct *work);
1159
1160 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1161                                      enum queue_stop_reason reason);
1162 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1163                                      enum queue_stop_reason reason);
1164 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1165                                     enum queue_stop_reason reason);
1166 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1167                                     enum queue_stop_reason reason);
1168 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1169                                struct sk_buff *skb);
1170 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1171                                struct sk_buff_head *skbs);
1172
1173 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1174                          u16 transaction, u16 auth_alg,
1175                          u8 *extra, size_t extra_len, const u8 *bssid,
1176                          const u8 *key, u8 key_len, u8 key_idx);
1177 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1178                              const u8 *ie, size_t ie_len,
1179                              enum ieee80211_band band);
1180 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1181                               const u8 *ssid, size_t ssid_len,
1182                               const u8 *ie, size_t ie_len);
1183
1184 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1185                                   const size_t supp_rates_len,
1186                                   const u8 *supp_rates);
1187 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1188                             struct ieee802_11_elems *elems,
1189                             enum ieee80211_band band);
1190 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1191                              enum ieee80211_smps_mode smps_mode);
1192 void ieee80211_recalc_smps(struct ieee80211_local *local,
1193                            struct ieee80211_sub_if_data *forsdata);
1194
1195 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1196                           const u8 *ids, int n_ids, size_t offset);
1197 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1198
1199 /* internal work items */
1200 void ieee80211_work_init(struct ieee80211_local *local);
1201 void ieee80211_add_work(struct ieee80211_work *wk);
1202 void free_work(struct ieee80211_work *wk);
1203 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1204 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1205                                            struct sk_buff *skb);
1206 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1207                                    struct ieee80211_channel *chan,
1208                                    enum nl80211_channel_type channel_type,
1209                                    unsigned int duration, u64 *cookie);
1210 int ieee80211_wk_cancel_remain_on_channel(
1211         struct ieee80211_sub_if_data *sdata, u64 cookie);
1212
1213 #ifdef CONFIG_MAC80211_NOINLINE
1214 #define debug_noinline noinline
1215 #else
1216 #define debug_noinline
1217 #endif
1218
1219 #endif /* IEEE80211_I_H */