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         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 321 };
 322
 323 struct ieee80211_if_managed {
 324         struct timer_list timer;
 325         struct timer_list conn_mon_timer;
 326         struct timer_list bcn_mon_timer;
 327         struct timer_list chswitch_timer;
 328         struct work_struct work;
 329         struct work_struct monitor_work;
 330         struct work_struct chswitch_work;
 331         struct work_struct beacon_connection_loss_work;
 332
 333         unsigned long probe_timeout;
 334         int probe_send_count;
 335
 336         struct mutex mtx;
 337         struct cfg80211_bss *associated;
 338
 339         u8 bssid[ETH_ALEN];
 340
 341         u16 aid;
 342
 343         struct sk_buff_head skb_queue;
 344
 345         unsigned long timers_running; /* used for quiesce/restart */
 346         bool powersave; /* powersave requested for this iface */
 347         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 348                                  ap_smps; /* smps mode AP thinks we're in */
 349
 350         unsigned int flags;
 351
 352         u32 beacon_crc;
 353
 354         enum {
 355                 IEEE80211_MFP_DISABLED,
 356                 IEEE80211_MFP_OPTIONAL,
 357                 IEEE80211_MFP_REQUIRED
 358         } mfp; /* management frame protection */
 359
 360         int wmm_last_param_set;
 361
 362         u8 use_4addr;
 363
 364         /* Signal strength from the last Beacon frame in the current BSS. */
 365         int last_beacon_signal;
 366
 367         /*
 368          * Weighted average of the signal strength from Beacon frames in the
 369          * current BSS. This is in units of 1/16 of the signal unit to maintain
 370          * accuracy and to speed up calculations, i.e., the value need to be
 371          * divided by 16 to get the actual value.
 372          */
 373         int ave_beacon_signal;
 374
 375         /*
 376          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 377          * that triggered a cqm event. 0 indicates that no event has been
 378          * generated for the current association.
 379          */
 380         int last_cqm_event_signal;
 381 };
 382
 383 enum ieee80211_ibss_request {
 384         IEEE80211_IBSS_REQ_RUN  = 0,
 385 };
 386
 387 struct ieee80211_if_ibss {
 388         struct timer_list timer;
 389         struct work_struct work;
 390
 391         struct sk_buff_head skb_queue;
 392
 393         unsigned long request;
 394         unsigned long last_scan_completed;
 395
 396         bool timer_running;
 397
 398         bool fixed_bssid;
 399         bool fixed_channel;
 400         bool privacy;
 401
 402         u8 bssid[ETH_ALEN];
 403         u8 ssid[IEEE80211_MAX_SSID_LEN];
 404         u8 ssid_len, ie_len;
 405         u8 *ie;
 406         struct ieee80211_channel *channel;
 407
 408         unsigned long ibss_join_req;
 409         /* probe response/beacon for IBSS */
 410         struct sk_buff *presp, *skb;
 411
 412         enum {
 413                 IEEE80211_IBSS_MLME_SEARCH,
 414                 IEEE80211_IBSS_MLME_JOINED,
 415         } state;
 416 };
 417
 418 struct ieee80211_if_mesh {
 419         struct work_struct work;
 420         struct timer_list housekeeping_timer;
 421         struct timer_list mesh_path_timer;
 422         struct timer_list mesh_path_root_timer;
 423         struct sk_buff_head skb_queue;
 424
 425         unsigned long timers_running;
 426
 427         unsigned long wrkq_flags;
 428
 429         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 430         size_t mesh_id_len;
 431         /* Active Path Selection Protocol Identifier */
 432         u8 mesh_pp_id;
 433         /* Active Path Selection Metric Identifier */
 434         u8 mesh_pm_id;
 435         /* Congestion Control Mode Identifier */
 436         u8 mesh_cc_id;
 437         /* Synchronization Protocol Identifier */
 438         u8 mesh_sp_id;
 439         /* Authentication Protocol Identifier */
 440         u8 mesh_auth_id;
 441         /* Local mesh Sequence Number */
 442         u32 sn;
 443         /* Last used PREQ ID */
 444         u32 preq_id;
 445         atomic_t mpaths;
 446         /* Timestamp of last SN update */
 447         unsigned long last_sn_update;
 448         /* Timestamp of last SN sent */
 449         unsigned long last_preq;
 450         struct mesh_rmc *rmc;
 451         spinlock_t mesh_preq_queue_lock;
 452         struct mesh_preq_queue preq_queue;
 453         int preq_queue_len;
 454         struct mesh_stats mshstats;
 455         struct mesh_config mshcfg;
 456         u32 mesh_seqnum;
 457         bool accepting_plinks;
 458 };
 459
 460 #ifdef CONFIG_MAC80211_MESH
 461 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 462         do { (msh)->mshstats.name++; } while (0)
 463 #else
 464 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 465         do { } while (0)
 466 #endif
 467
 468 /**
 469  * enum ieee80211_sub_if_data_flags - virtual interface flags
 470  *
 471  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 472  * @IEEE80211_SDATA_PROMISC: interface is promisc
 473  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 474  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 475  *      associated stations and deliver multicast frames both
 476  *      back to wireless media and to the local net stack.
 477  */
 478 enum ieee80211_sub_if_data_flags {
 479         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 480         IEEE80211_SDATA_PROMISC                 = BIT(1),
 481         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 482         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 483 };
 484
 485 struct ieee80211_sub_if_data {
 486         struct list_head list;
 487
 488         struct wireless_dev wdev;
 489
 490         /* keys */
 491         struct list_head key_list;
 492
 493         struct net_device *dev;
 494         struct ieee80211_local *local;
 495
 496         unsigned int flags;
 497
 498         int drop_unencrypted;
 499
 500         char name[IFNAMSIZ];
 501
 502         /*
 503          * keep track of whether the HT opmode (stored in
 504          * vif.bss_info.ht_operation_mode) is valid.
 505          */
 506         bool ht_opmode_valid;
 507
 508         /* Fragment table for host-based reassembly */
 509         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 510         unsigned int fragment_next;
 511
 512 #define NUM_DEFAULT_KEYS 4
 513 #define NUM_DEFAULT_MGMT_KEYS 2
 514         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 515         struct ieee80211_key *default_key;
 516         struct ieee80211_key *default_mgmt_key;
 517
 518         u16 sequence_number;
 519
 520         /*
 521          * AP this belongs to: self in AP mode and
 522          * corresponding AP in VLAN mode, NULL for
 523          * all others (might be needed later in IBSS)
 524          */
 525         struct ieee80211_if_ap *bss;
 526
 527         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 528         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 529
 530         union {
 531                 struct ieee80211_if_ap ap;
 532                 struct ieee80211_if_wds wds;
 533                 struct ieee80211_if_vlan vlan;
 534                 struct ieee80211_if_managed mgd;
 535                 struct ieee80211_if_ibss ibss;
 536 #ifdef CONFIG_MAC80211_MESH
 537                 struct ieee80211_if_mesh mesh;
 538 #endif
 539                 u32 mntr_flags;
 540         } u;
 541
 542 #ifdef CONFIG_MAC80211_DEBUGFS
 543         struct {
 544                 struct dentry *dir;
 545                 struct dentry *default_key;
 546                 struct dentry *default_mgmt_key;
 547         } debugfs;
 548 #endif
 549         /* must be last, dynamically sized area in this! */
 550         struct ieee80211_vif vif;
 551 };
 552
 553 static inline
 554 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 555 {
 556         return container_of(p, struct ieee80211_sub_if_data, vif);
 557 }
 558
 559 static inline void
 560 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
 561                             u8 mesh_id_len, u8 *mesh_id)
 562 {
 563 #ifdef CONFIG_MAC80211_MESH
 564         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 565         ifmsh->mesh_id_len = mesh_id_len;
 566         memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
 567 #else
 568         WARN_ON(1);
 569 #endif
 570 }
 571
 572 enum {
 573         IEEE80211_RX_MSG        = 1,
 574         IEEE80211_TX_STATUS_MSG = 2,
 575         IEEE80211_DELBA_MSG     = 3,
 576         IEEE80211_ADDBA_MSG     = 4,
 577 };
 578
 579 enum queue_stop_reason {
 580         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 581         IEEE80211_QUEUE_STOP_REASON_PS,
 582         IEEE80211_QUEUE_STOP_REASON_CSA,
 583         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 584         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 585         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 586 };
 587
 588 /**
 589  * mac80211 scan flags - currently active scan mode
 590  *
 591  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 592  *      well be on the operating channel
 593  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 594  *      determine if we are on the operating channel or not
 595  * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
 596  *      gets only set in conjunction with SCAN_SW_SCANNING
 597  */
 598 enum {
 599         SCAN_SW_SCANNING,
 600         SCAN_HW_SCANNING,
 601         SCAN_OFF_CHANNEL,
 602 };
 603
 604 /**
 605  * enum mac80211_scan_state - scan state machine states
 606  *
 607  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 608  *      determines if we should keep on scanning or switch back to the
 609  *      operating channel
 610  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 611  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 612  * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 613  *      about us leaving the channel and stop all associated STA interfaces
 614  * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 615  *      AP about us being back and restart all associated STA interfaces
 616  */
 617 enum mac80211_scan_state {
 618         SCAN_DECISION,
 619         SCAN_SET_CHANNEL,
 620         SCAN_SEND_PROBE,
 621         SCAN_LEAVE_OPER_CHANNEL,
 622         SCAN_ENTER_OPER_CHANNEL,
 623 };
 624
 625 struct ieee80211_local {
 626         /* embed the driver visible part.
 627          * don't cast (use the static inlines below), but we keep
 628          * it first anyway so they become a no-op */
 629         struct ieee80211_hw hw;
 630
 631         const struct ieee80211_ops *ops;
 632
 633         /*
 634          * work stuff, potentially off-channel (in the future)
 635          */
 636         struct mutex work_mtx;
 637         struct list_head work_list;
 638         struct timer_list work_timer;
 639         struct work_struct work_work;
 640         struct sk_buff_head work_skb_queue;
 641
 642         /*
 643          * private workqueue to mac80211. mac80211 makes this accessible
 644          * via ieee80211_queue_work()
 645          */
 646         struct workqueue_struct *workqueue;
 647
 648         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 649         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 650         spinlock_t queue_stop_reason_lock;
 651
 652         int open_count;
 653         int monitors, cooked_mntrs;
 654         /* number of interfaces with corresponding FIF_ flags */
 655         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
 656         unsigned int filter_flags; /* FIF_* */
 657
 658         /* protects the aggregated multicast list and filter calls */
 659         spinlock_t filter_lock;
 660
 661         /* used for uploading changed mc list */
 662         struct work_struct reconfig_filter;
 663
 664         /* used to reconfigure hardware SM PS */
 665         struct work_struct recalc_smps;
 666
 667         /* aggregated multicast list */
 668         struct netdev_hw_addr_list mc_list;
 669
 670         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 671
 672         /*
 673          * suspended is true if we finished all the suspend _and_ we have
 674          * not yet come up from resume. This is to be used by mac80211
 675          * to ensure driver sanity during suspend and mac80211's own
 676          * sanity. It can eventually be used for WoW as well.
 677          */
 678         bool suspended;
 679
 680         /*
 681          * Resuming is true while suspended, but when we're reprogramming the
 682          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 683          * again even though some other parts of the stack are still suspended
 684          * and we still drop received frames to avoid waking the stack.
 685          */
 686         bool resuming;
 687
 688         /*
 689          * quiescing is true during the suspend process _only_ to
 690          * ease timer cancelling etc.
 691          */
 692         bool quiescing;
 693
 694         /* device is started */
 695         bool started;
 696
 697         int tx_headroom; /* required headroom for hardware/radiotap */
 698
 699         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 700          * added to skb_queue will be processed, but frames in
 701          * skb_queue_unreliable may be dropped if the total length of these
 702          * queues increases over the limit. */
 703 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 704         struct tasklet_struct tasklet;
 705         struct sk_buff_head skb_queue;
 706         struct sk_buff_head skb_queue_unreliable;
 707
 708         /* Station data */
 709         /*
 710          * The mutex only protects the list and counter,
 711          * reads are done in RCU.
 712          * Additionally, the lock protects the hash table,
 713          * the pending list and each BSS's TIM bitmap.
 714          */
 715         struct mutex sta_mtx;
 716         spinlock_t sta_lock;
 717         unsigned long num_sta;
 718         struct list_head sta_list, sta_pending_list;
 719         struct sta_info *sta_hash[STA_HASH_SIZE];
 720         struct timer_list sta_cleanup;
 721         struct work_struct sta_finish_work;
 722         int sta_generation;
 723
 724         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 725         struct tasklet_struct tx_pending_tasklet;
 726
 727         /*
 728          * This lock is used to prevent concurrent A-MPDU
 729          * session start/stop processing, this thus also
 730          * synchronises the ->ampdu_action() callback to
 731          * drivers and limits it to one at a time.
 732          */
 733         spinlock_t ampdu_lock;
 734
 735         /* number of interfaces with corresponding IFF_ flags */
 736         atomic_t iff_allmultis, iff_promiscs;
 737
 738         struct rate_control_ref *rate_ctrl;
 739
 740         struct crypto_blkcipher *wep_tx_tfm;
 741         struct crypto_blkcipher *wep_rx_tfm;
 742         u32 wep_iv;
 743
 744         /* see iface.c */
 745         struct list_head interfaces;
 746         struct mutex iflist_mtx;
 747
 748         /*
 749          * Key lock, protects sdata's key_list and sta_info's
 750          * key pointers (write access, they're RCU.)
 751          */
 752         spinlock_t key_lock;
 753
 754
 755         /* Scanning and BSS list */
 756         struct mutex scan_mtx;
 757         unsigned long scanning;
 758         struct cfg80211_ssid scan_ssid;
 759         struct cfg80211_scan_request *int_scan_req;
 760         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 761         struct ieee80211_channel *scan_channel;
 762         enum ieee80211_band hw_scan_band;
 763         int scan_channel_idx;
 764         int scan_ies_len;
 765
 766         unsigned long leave_oper_channel_time;
 767         enum mac80211_scan_state next_scan_state;
 768         struct delayed_work scan_work;
 769         struct ieee80211_sub_if_data *scan_sdata;
 770         enum nl80211_channel_type _oper_channel_type;
 771         struct ieee80211_channel *oper_channel, *csa_channel;
 772
 773         /* Temporary remain-on-channel for off-channel operations */
 774         struct ieee80211_channel *tmp_channel;
 775         enum nl80211_channel_type tmp_channel_type;
 776
 777         /* SNMP counters */
 778         /* dot11CountersTable */
 779         u32 dot11TransmittedFragmentCount;
 780         u32 dot11MulticastTransmittedFrameCount;
 781         u32 dot11FailedCount;
 782         u32 dot11RetryCount;
 783         u32 dot11MultipleRetryCount;
 784         u32 dot11FrameDuplicateCount;
 785         u32 dot11ReceivedFragmentCount;
 786         u32 dot11MulticastReceivedFrameCount;
 787         u32 dot11TransmittedFrameCount;
 788
 789 #ifdef CONFIG_MAC80211_LEDS
 790         int tx_led_counter, rx_led_counter;
 791         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 792         char tx_led_name[32], rx_led_name[32],
 793              assoc_led_name[32], radio_led_name[32];
 794 #endif
 795
 796 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 797         /* TX/RX handler statistics */
 798         unsigned int tx_handlers_drop;
 799         unsigned int tx_handlers_queued;
 800         unsigned int tx_handlers_drop_unencrypted;
 801         unsigned int tx_handlers_drop_fragment;
 802         unsigned int tx_handlers_drop_wep;
 803         unsigned int tx_handlers_drop_not_assoc;
 804         unsigned int tx_handlers_drop_unauth_port;
 805         unsigned int rx_handlers_drop;
 806         unsigned int rx_handlers_queued;
 807         unsigned int rx_handlers_drop_nullfunc;
 808         unsigned int rx_handlers_drop_defrag;
 809         unsigned int rx_handlers_drop_short;
 810         unsigned int rx_handlers_drop_passive_scan;
 811         unsigned int tx_expand_skb_head;
 812         unsigned int tx_expand_skb_head_cloned;
 813         unsigned int rx_expand_skb_head;
 814         unsigned int rx_expand_skb_head2;
 815         unsigned int rx_handlers_fragments;
 816         unsigned int tx_status_drop;
 817 #define I802_DEBUG_INC(c) (c)++
 818 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 819 #define I802_DEBUG_INC(c) do { } while (0)
 820 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 821
 822
 823         int total_ps_buffered; /* total number of all buffered unicast and
 824                                 * multicast packets for power saving stations
 825                                 */
 826         int wifi_wme_noack_test;
 827         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 828
 829         /*
 830          * Bitmask of enabled u-apsd queues,
 831          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 832          * to take effect.
 833          */
 834         unsigned int uapsd_queues;
 835
 836         /*
 837          * Maximum number of buffered frames AP can deliver during a
 838          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 839          * Needs a new association to take effect.
 840          */
 841         unsigned int uapsd_max_sp_len;
 842
 843         bool pspolling;
 844         bool offchannel_ps_enabled;
 845         /*
 846          * PS can only be enabled when we have exactly one managed
 847          * interface (and monitors) in PS, this then points there.
 848          */
 849         struct ieee80211_sub_if_data *ps_sdata;
 850         struct work_struct dynamic_ps_enable_work;
 851         struct work_struct dynamic_ps_disable_work;
 852         struct timer_list dynamic_ps_timer;
 853         struct notifier_block network_latency_notifier;
 854
 855         int user_power_level; /* in dBm */
 856         int power_constr_level; /* in dBm */
 857
 858         enum ieee80211_smps_mode smps_mode;
 859
 860         struct work_struct restart_work;
 861
 862 #ifdef CONFIG_MAC80211_DEBUGFS
 863         struct local_debugfsdentries {
 864                 struct dentry *rcdir;
 865                 struct dentry *stations;
 866                 struct dentry *keys;
 867         } debugfs;
 868 #endif
 869 };
 870
 871 static inline struct ieee80211_sub_if_data *
 872 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 873 {
 874         return netdev_priv(dev);
 875 }
 876
 877 /* this struct represents 802.11n's RA/TID combination along with our vif */
 878 struct ieee80211_ra_tid {
 879         struct ieee80211_vif *vif;
 880         u8 ra[ETH_ALEN];
 881         u16 tid;
 882 };
 883
 884 /* Parsed Information Elements */
 885 struct ieee802_11_elems {
 886         u8 *ie_start;
 887         size_t total_len;
 888
 889         /* pointers to IEs */
 890         u8 *ssid;
 891         u8 *supp_rates;
 892         u8 *fh_params;
 893         u8 *ds_params;
 894         u8 *cf_params;
 895         struct ieee80211_tim_ie *tim;
 896         u8 *ibss_params;
 897         u8 *challenge;
 898         u8 *wpa;
 899         u8 *rsn;
 900         u8 *erp_info;
 901         u8 *ext_supp_rates;
 902         u8 *wmm_info;
 903         u8 *wmm_param;
 904         struct ieee80211_ht_cap *ht_cap_elem;
 905         struct ieee80211_ht_info *ht_info_elem;
 906         struct ieee80211_meshconf_ie *mesh_config;
 907         u8 *mesh_id;
 908         u8 *peer_link;
 909         u8 *preq;
 910         u8 *prep;
 911         u8 *perr;
 912         struct ieee80211_rann_ie *rann;
 913         u8 *ch_switch_elem;
 914         u8 *country_elem;
 915         u8 *pwr_constr_elem;
 916         u8 *quiet_elem;         /* first quite element */
 917         u8 *timeout_int;
 918
 919         /* length of them, respectively */
 920         u8 ssid_len;
 921         u8 supp_rates_len;
 922         u8 fh_params_len;
 923         u8 ds_params_len;
 924         u8 cf_params_len;
 925         u8 tim_len;
 926         u8 ibss_params_len;
 927         u8 challenge_len;
 928         u8 wpa_len;
 929         u8 rsn_len;
 930         u8 erp_info_len;
 931         u8 ext_supp_rates_len;
 932         u8 wmm_info_len;
 933         u8 wmm_param_len;
 934         u8 mesh_id_len;
 935         u8 peer_link_len;
 936         u8 preq_len;
 937         u8 prep_len;
 938         u8 perr_len;
 939         u8 ch_switch_elem_len;
 940         u8 country_elem_len;
 941         u8 pwr_constr_elem_len;
 942         u8 quiet_elem_len;
 943         u8 num_of_quiet_elem;   /* can be more the one */
 944         u8 timeout_int_len;
 945 };
 946
 947 static inline struct ieee80211_local *hw_to_local(
 948         struct ieee80211_hw *hw)
 949 {
 950         return container_of(hw, struct ieee80211_local, hw);
 951 }
 952
 953 static inline struct ieee80211_hw *local_to_hw(
 954         struct ieee80211_local *local)
 955 {
 956         return &local->hw;
 957 }
 958
 959
 960 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 961 {
 962         return compare_ether_addr(raddr, addr) == 0 ||
 963                is_broadcast_ether_addr(raddr);
 964 }
 965
 966
 967 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 968 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 969 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 970                                       u32 changed);
 971 void ieee80211_configure_filter(struct ieee80211_local *local);
 972 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 973
 974 extern bool ieee80211_disable_40mhz_24ghz;
 975
 976 /* STA code */
 977 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 978 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 979                        struct cfg80211_auth_request *req);
 980 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 981                         struct cfg80211_assoc_request *req);
 982 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 983                          struct cfg80211_deauth_request *req,
 984                          void *cookie);
 985 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
 986                            struct cfg80211_disassoc_request *req,
 987                            void *cookie);
 988 int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata,
 989                          struct ieee80211_channel *chan,
 990                          enum nl80211_channel_type channel_type,
 991                          const u8 *buf, size_t len, u64 *cookie);
 992 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
 993                                           struct sk_buff *skb);
 994 void ieee80211_send_pspoll(struct ieee80211_local *local,
 995                            struct ieee80211_sub_if_data *sdata);
 996 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
 997 int ieee80211_max_network_latency(struct notifier_block *nb,
 998                                   unsigned long data, void *dummy);
 999 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1000                                       struct ieee80211_channel_sw_ie *sw_elem,
1001                                       struct ieee80211_bss *bss,
1002                                       u64 timestamp);
1003 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1004 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1005
1006 /* IBSS code */
1007 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1008 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1009 ieee80211_rx_result
1010 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1011 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1012                                         u8 *bssid, u8 *addr, u32 supp_rates,
1013                                         gfp_t gfp);
1014 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1015                         struct cfg80211_ibss_params *params);
1016 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1017 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1018 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1019
1020 /* scan/BSS handling */
1021 void ieee80211_scan_work(struct work_struct *work);
1022 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1023                                     const u8 *ssid, u8 ssid_len,
1024                                     struct ieee80211_channel *chan);
1025 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1026                            struct cfg80211_scan_request *req);
1027 void ieee80211_scan_cancel(struct ieee80211_local *local);
1028 ieee80211_rx_result
1029 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1030
1031 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1032 struct ieee80211_bss *
1033 ieee80211_bss_info_update(struct ieee80211_local *local,
1034                           struct ieee80211_rx_status *rx_status,
1035                           struct ieee80211_mgmt *mgmt,
1036                           size_t len,
1037                           struct ieee802_11_elems *elems,
1038                           struct ieee80211_channel *channel,
1039                           bool beacon);
1040 struct ieee80211_bss *
1041 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1042                      u8 *ssid, u8 ssid_len);
1043 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1044                           struct ieee80211_bss *bss);
1045
1046 /* off-channel helpers */
1047 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
1048 void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
1049 void ieee80211_offchannel_return(struct ieee80211_local *local,
1050                                  bool enable_beaconing);
1051
1052 /* interface handling */
1053 int ieee80211_iface_init(void);
1054 void ieee80211_iface_exit(void);
1055 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1056                      struct net_device **new_dev, enum nl80211_iftype type,
1057                      struct vif_params *params);
1058 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1059                              enum nl80211_iftype type);
1060 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1061 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1062 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1063 void ieee80211_recalc_idle(struct ieee80211_local *local);
1064
1065 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1066 {
1067         return netif_running(sdata->dev);
1068 }
1069
1070 /* tx handling */
1071 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1072 void ieee80211_tx_pending(unsigned long data);
1073 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1074                                          struct net_device *dev);
1075 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1076                                        struct net_device *dev);
1077
1078 /*
1079  * radiotap header for status frames
1080  */
1081 struct ieee80211_tx_status_rtap_hdr {
1082         struct ieee80211_radiotap_header hdr;
1083         u8 rate;
1084         u8 padding_for_rate;
1085         __le16 tx_flags;
1086         u8 data_retries;
1087 } __attribute__ ((packed));
1088
1089
1090 /* HT */
1091 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1092                                        struct ieee80211_ht_cap *ht_cap_ie,
1093                                        struct ieee80211_sta_ht_cap *ht_cap);
1094 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1095 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1096                           const u8 *da, u16 tid,
1097                           u16 initiator, u16 reason_code);
1098 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1099                                enum ieee80211_smps_mode smps, const u8 *da,
1100                                const u8 *bssid);
1101
1102 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1103                                     u16 initiator, u16 reason);
1104 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1105 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1106                              struct sta_info *sta,
1107                              struct ieee80211_mgmt *mgmt, size_t len);
1108 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1109                                   struct sta_info *sta,
1110                                   struct ieee80211_mgmt *mgmt,
1111                                   size_t len);
1112 void ieee80211_process_addba_request(struct ieee80211_local *local,
1113                                      struct sta_info *sta,
1114                                      struct ieee80211_mgmt *mgmt,
1115                                      size_t len);
1116
1117 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1118                                    enum ieee80211_back_parties initiator);
1119 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1120                                     enum ieee80211_back_parties initiator);
1121
1122 /* Spectrum management */
1123 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1124                                        struct ieee80211_mgmt *mgmt,
1125                                        size_t len);
1126
1127 /* Suspend/resume and hw reconfiguration */
1128 int ieee80211_reconfig(struct ieee80211_local *local);
1129 void ieee80211_stop_device(struct ieee80211_local *local);
1130
1131 #ifdef CONFIG_PM
1132 int __ieee80211_suspend(struct ieee80211_hw *hw);
1133
1134 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1135 {
1136         return ieee80211_reconfig(hw_to_local(hw));
1137 }
1138 #else
1139 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1140 {
1141         return 0;
1142 }
1143
1144 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1145 {
1146         return 0;
1147 }
1148 #endif
1149
1150 /* utility functions/constants */
1151 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1152 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1153                         enum nl80211_iftype type);
1154 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1155                              int rate, int erp, int short_preamble);
1156 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1157                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1158                                      gfp_t gfp);
1159 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1160 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1161 void ieee802_11_parse_elems(u8 *start, size_t len,
1162                             struct ieee802_11_elems *elems);
1163 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1164                                struct ieee802_11_elems *elems,
1165                                u64 filter, u32 crc);
1166 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1167                               enum ieee80211_band band);
1168
1169 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1170 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1171 void ieee80211_dynamic_ps_timer(unsigned long data);
1172 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1173                              struct ieee80211_sub_if_data *sdata,
1174                              int powersave);
1175 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1176                              struct ieee80211_hdr *hdr);
1177 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1178
1179 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1180                                      enum queue_stop_reason reason);
1181 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1182                                      enum queue_stop_reason reason);
1183 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1184                                     enum queue_stop_reason reason);
1185 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1186                                     enum queue_stop_reason reason);
1187 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1188                                struct sk_buff *skb);
1189 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1190                                struct sk_buff_head *skbs);
1191
1192 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1193                          u16 transaction, u16 auth_alg,
1194                          u8 *extra, size_t extra_len, const u8 *bssid,
1195                          const u8 *key, u8 key_len, u8 key_idx);
1196 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1197                              const u8 *ie, size_t ie_len,
1198                              enum ieee80211_band band);
1199 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1200                               const u8 *ssid, size_t ssid_len,
1201                               const u8 *ie, size_t ie_len);
1202
1203 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1204                                   const size_t supp_rates_len,
1205                                   const u8 *supp_rates);
1206 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1207                             struct ieee802_11_elems *elems,
1208                             enum ieee80211_band band);
1209 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1210                              enum ieee80211_smps_mode smps_mode);
1211 void ieee80211_recalc_smps(struct ieee80211_local *local,
1212                            struct ieee80211_sub_if_data *forsdata);
1213
1214 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1215                           const u8 *ids, int n_ids, size_t offset);
1216 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1217
1218 /* internal work items */
1219 void ieee80211_work_init(struct ieee80211_local *local);
1220 void ieee80211_add_work(struct ieee80211_work *wk);
1221 void free_work(struct ieee80211_work *wk);
1222 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1223 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1224                                            struct sk_buff *skb);
1225 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1226                                    struct ieee80211_channel *chan,
1227                                    enum nl80211_channel_type channel_type,
1228                                    unsigned int duration, u64 *cookie);
1229 int ieee80211_wk_cancel_remain_on_channel(
1230         struct ieee80211_sub_if_data *sdata, u64 cookie);
1231
1232 /* channel management */
1233 enum ieee80211_chan_mode {
1234         CHAN_MODE_UNDEFINED,
1235         CHAN_MODE_HOPPING,
1236         CHAN_MODE_FIXED,
1237 };
1238
1239 enum ieee80211_chan_mode
1240 ieee80211_get_channel_mode(struct ieee80211_local *local,
1241                            struct ieee80211_sub_if_data *ignore);
1242 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1243                                 struct ieee80211_sub_if_data *sdata,
1244                                 enum nl80211_channel_type chantype);
1245
1246 #ifdef CONFIG_MAC80211_NOINLINE
1247 #define debug_noinline noinline
1248 #else
1249 #define debug_noinline
1250 #endif
1251
1252 #endif /* IEEE80211_I_H */