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 #define IEEE80211_MALFORMED_ACTION_FRM  BIT(4)
 174 /* only add flags here that do not change with subframes of an aMPDU */
 175
 176 struct ieee80211_rx_data {
 177         struct sk_buff *skb;
 178         struct ieee80211_local *local;
 179         struct ieee80211_sub_if_data *sdata;
 180         struct sta_info *sta;
 181         struct ieee80211_key *key;
 182
 183         unsigned int flags;
 184         int queue;
 185         u32 tkip_iv32;
 186         u16 tkip_iv16;
 187 };
 188
 189 struct beacon_data {
 190         u8 *head, *tail;
 191         int head_len, tail_len;
 192         int dtim_period;
 193 };
 194
 195 struct ieee80211_if_ap {
 196         struct beacon_data *beacon;
 197
 198         struct list_head vlans;
 199
 200         /* yes, this looks ugly, but guarantees that we can later use
 201          * bitmap_empty :)
 202          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 203         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 204         struct sk_buff_head ps_bc_buf;
 205         atomic_t num_sta_ps; /* number of stations in PS mode */
 206         int dtim_count;
 207 };
 208
 209 struct ieee80211_if_wds {
 210         struct sta_info *sta;
 211         u8 remote_addr[ETH_ALEN];
 212 };
 213
 214 struct ieee80211_if_vlan {
 215         struct list_head list;
 216
 217         /* used for all tx if the VLAN is configured to 4-addr mode */
 218         struct sta_info *sta;
 219 };
 220
 221 struct mesh_stats {
 222         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 223         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 224         __u32 fwded_frames;             /* Mesh total forwarded frames */
 225         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 226         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 227         atomic_t estab_plinks;
 228 };
 229
 230 #define PREQ_Q_F_START          0x1
 231 #define PREQ_Q_F_REFRESH        0x2
 232 struct mesh_preq_queue {
 233         struct list_head list;
 234         u8 dst[ETH_ALEN];
 235         u8 flags;
 236 };
 237
 238 enum ieee80211_work_type {
 239         IEEE80211_WORK_ABORT,
 240         IEEE80211_WORK_DIRECT_PROBE,
 241         IEEE80211_WORK_AUTH,
 242         IEEE80211_WORK_ASSOC_BEACON_WAIT,
 243         IEEE80211_WORK_ASSOC,
 244         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 245 };
 246
 247 /**
 248  * enum work_done_result - indicates what to do after work was done
 249  *
 250  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 251  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 252  *      should be requeued.
 253  */
 254 enum work_done_result {
 255         WORK_DONE_DESTROY,
 256         WORK_DONE_REQUEUE,
 257 };
 258
 259 struct ieee80211_work {
 260         struct list_head list;
 261
 262         struct rcu_head rcu_head;
 263
 264         struct ieee80211_sub_if_data *sdata;
 265
 266         enum work_done_result (*done)(struct ieee80211_work *wk,
 267                                       struct sk_buff *skb);
 268
 269         struct ieee80211_channel *chan;
 270         enum nl80211_channel_type chan_type;
 271
 272         unsigned long timeout;
 273         enum ieee80211_work_type type;
 274
 275         u8 filter_ta[ETH_ALEN];
 276
 277         bool started;
 278
 279         union {
 280                 struct {
 281                         int tries;
 282                         u16 algorithm, transaction;
 283                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 284                         u8 ssid_len;
 285                         u8 key[WLAN_KEY_LEN_WEP104];
 286                         u8 key_len, key_idx;
 287                         bool privacy;
 288                 } probe_auth;
 289                 struct {
 290                         struct cfg80211_bss *bss;
 291                         const u8 *supp_rates;
 292                         const u8 *ht_information_ie;
 293                         enum ieee80211_smps_mode smps;
 294                         int tries;
 295                         u16 capability;
 296                         u8 prev_bssid[ETH_ALEN];
 297                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 298                         u8 ssid_len;
 299                         u8 supp_rates_len;
 300                         bool wmm_used, use_11n, uapsd_used;
 301                 } assoc;
 302                 struct {
 303                         u32 duration;
 304                 } remain;
 305         };
 306
 307         int ie_len;
 308         /* must be last */
 309         u8 ie[0];
 310 };
 311
 312 /* flags used in struct ieee80211_if_managed.flags */
 313 enum ieee80211_sta_flags {
 314         IEEE80211_STA_BEACON_POLL       = BIT(0),
 315         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 316         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 317         IEEE80211_STA_DISABLE_11N       = BIT(4),
 318         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 319         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 320         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 321         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 322         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 323 };
 324
 325 struct ieee80211_if_managed {
 326         struct timer_list timer;
 327         struct timer_list conn_mon_timer;
 328         struct timer_list bcn_mon_timer;
 329         struct timer_list chswitch_timer;
 330         struct work_struct monitor_work;
 331         struct work_struct chswitch_work;
 332         struct work_struct beacon_connection_loss_work;
 333
 334         unsigned long probe_timeout;
 335         int probe_send_count;
 336
 337         struct mutex mtx;
 338         struct cfg80211_bss *associated;
 339
 340         u8 bssid[ETH_ALEN];
 341
 342         u16 aid;
 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                                  driver_smps_mode; /* smps mode request */
 349
 350         struct work_struct request_smps_work;
 351
 352         unsigned int flags;
 353
 354         u32 beacon_crc;
 355
 356         enum {
 357                 IEEE80211_MFP_DISABLED,
 358                 IEEE80211_MFP_OPTIONAL,
 359                 IEEE80211_MFP_REQUIRED
 360         } mfp; /* management frame protection */
 361
 362         int wmm_last_param_set;
 363
 364         u8 use_4addr;
 365
 366         /* Signal strength from the last Beacon frame in the current BSS. */
 367         int last_beacon_signal;
 368
 369         /*
 370          * Weighted average of the signal strength from Beacon frames in the
 371          * current BSS. This is in units of 1/16 of the signal unit to maintain
 372          * accuracy and to speed up calculations, i.e., the value need to be
 373          * divided by 16 to get the actual value.
 374          */
 375         int ave_beacon_signal;
 376
 377         /*
 378          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 379          * that triggered a cqm event. 0 indicates that no event has been
 380          * generated for the current association.
 381          */
 382         int last_cqm_event_signal;
 383 };
 384
 385 struct ieee80211_if_ibss {
 386         struct timer_list timer;
 387
 388         struct mutex mtx;
 389
 390         unsigned long last_scan_completed;
 391
 392         u32 basic_rates;
 393
 394         bool timer_running;
 395
 396         bool fixed_bssid;
 397         bool fixed_channel;
 398         bool privacy;
 399
 400         u8 bssid[ETH_ALEN];
 401         u8 ssid[IEEE80211_MAX_SSID_LEN];
 402         u8 ssid_len, ie_len;
 403         u8 *ie;
 404         struct ieee80211_channel *channel;
 405
 406         unsigned long ibss_join_req;
 407         /* probe response/beacon for IBSS */
 408         struct sk_buff *presp, *skb;
 409
 410         enum {
 411                 IEEE80211_IBSS_MLME_SEARCH,
 412                 IEEE80211_IBSS_MLME_JOINED,
 413         } state;
 414 };
 415
 416 struct ieee80211_if_mesh {
 417         struct timer_list housekeeping_timer;
 418         struct timer_list mesh_path_timer;
 419         struct timer_list mesh_path_root_timer;
 420
 421         unsigned long timers_running;
 422
 423         unsigned long wrkq_flags;
 424
 425         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 426         size_t mesh_id_len;
 427         /* Active Path Selection Protocol Identifier */
 428         u8 mesh_pp_id;
 429         /* Active Path Selection Metric Identifier */
 430         u8 mesh_pm_id;
 431         /* Congestion Control Mode Identifier */
 432         u8 mesh_cc_id;
 433         /* Synchronization Protocol Identifier */
 434         u8 mesh_sp_id;
 435         /* Authentication Protocol Identifier */
 436         u8 mesh_auth_id;
 437         /* Local mesh Sequence Number */
 438         u32 sn;
 439         /* Last used PREQ ID */
 440         u32 preq_id;
 441         atomic_t mpaths;
 442         /* Timestamp of last SN update */
 443         unsigned long last_sn_update;
 444         /* Timestamp of last SN sent */
 445         unsigned long last_preq;
 446         struct mesh_rmc *rmc;
 447         spinlock_t mesh_preq_queue_lock;
 448         struct mesh_preq_queue preq_queue;
 449         int preq_queue_len;
 450         struct mesh_stats mshstats;
 451         struct mesh_config mshcfg;
 452         u32 mesh_seqnum;
 453         bool accepting_plinks;
 454 };
 455
 456 #ifdef CONFIG_MAC80211_MESH
 457 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 458         do { (msh)->mshstats.name++; } while (0)
 459 #else
 460 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 461         do { } while (0)
 462 #endif
 463
 464 /**
 465  * enum ieee80211_sub_if_data_flags - virtual interface flags
 466  *
 467  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 468  * @IEEE80211_SDATA_PROMISC: interface is promisc
 469  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 470  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 471  *      associated stations and deliver multicast frames both
 472  *      back to wireless media and to the local net stack.
 473  */
 474 enum ieee80211_sub_if_data_flags {
 475         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 476         IEEE80211_SDATA_PROMISC                 = BIT(1),
 477         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 478         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 479 };
 480
 481 struct ieee80211_sub_if_data {
 482         struct list_head list;
 483
 484         struct wireless_dev wdev;
 485
 486         /* keys */
 487         struct list_head key_list;
 488
 489         struct net_device *dev;
 490         struct ieee80211_local *local;
 491
 492         unsigned int flags;
 493
 494         int drop_unencrypted;
 495
 496         char name[IFNAMSIZ];
 497
 498         /*
 499          * keep track of whether the HT opmode (stored in
 500          * vif.bss_info.ht_operation_mode) is valid.
 501          */
 502         bool ht_opmode_valid;
 503
 504         /* to detect idle changes */
 505         bool old_idle;
 506
 507         /* Fragment table for host-based reassembly */
 508         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 509         unsigned int fragment_next;
 510
 511 #define NUM_DEFAULT_KEYS 4
 512 #define NUM_DEFAULT_MGMT_KEYS 2
 513         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 514         struct ieee80211_key *default_key;
 515         struct ieee80211_key *default_mgmt_key;
 516
 517         u16 sequence_number;
 518
 519         struct work_struct work;
 520         struct sk_buff_head skb_queue;
 521
 522         bool arp_filter_state;
 523
 524         /*
 525          * AP this belongs to: self in AP mode and
 526          * corresponding AP in VLAN mode, NULL for
 527          * all others (might be needed later in IBSS)
 528          */
 529         struct ieee80211_if_ap *bss;
 530
 531         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 532         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 533
 534         union {
 535                 struct ieee80211_if_ap ap;
 536                 struct ieee80211_if_wds wds;
 537                 struct ieee80211_if_vlan vlan;
 538                 struct ieee80211_if_managed mgd;
 539                 struct ieee80211_if_ibss ibss;
 540 #ifdef CONFIG_MAC80211_MESH
 541                 struct ieee80211_if_mesh mesh;
 542 #endif
 543                 u32 mntr_flags;
 544         } u;
 545
 546 #ifdef CONFIG_MAC80211_DEBUGFS
 547         struct {
 548                 struct dentry *dir;
 549                 struct dentry *default_key;
 550                 struct dentry *default_mgmt_key;
 551         } debugfs;
 552 #endif
 553         /* must be last, dynamically sized area in this! */
 554         struct ieee80211_vif vif;
 555 };
 556
 557 static inline
 558 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 559 {
 560         return container_of(p, struct ieee80211_sub_if_data, vif);
 561 }
 562
 563 static inline void
 564 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
 565                             u8 mesh_id_len, u8 *mesh_id)
 566 {
 567 #ifdef CONFIG_MAC80211_MESH
 568         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 569         ifmsh->mesh_id_len = mesh_id_len;
 570         memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
 571 #else
 572         WARN_ON(1);
 573 #endif
 574 }
 575
 576 enum sdata_queue_type {
 577         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 578         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 579         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 580 };
 581
 582 enum {
 583         IEEE80211_RX_MSG        = 1,
 584         IEEE80211_TX_STATUS_MSG = 2,
 585 };
 586
 587 enum queue_stop_reason {
 588         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 589         IEEE80211_QUEUE_STOP_REASON_PS,
 590         IEEE80211_QUEUE_STOP_REASON_CSA,
 591         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 592         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 593         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 594 };
 595
 596 /**
 597  * mac80211 scan flags - currently active scan mode
 598  *
 599  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 600  *      well be on the operating channel
 601  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 602  *      determine if we are on the operating channel or not
 603  * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
 604  *      gets only set in conjunction with SCAN_SW_SCANNING
 605  */
 606 enum {
 607         SCAN_SW_SCANNING,
 608         SCAN_HW_SCANNING,
 609         SCAN_OFF_CHANNEL,
 610 };
 611
 612 /**
 613  * enum mac80211_scan_state - scan state machine states
 614  *
 615  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 616  *      determines if we should keep on scanning or switch back to the
 617  *      operating channel
 618  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 619  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 620  * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 621  *      about us leaving the channel and stop all associated STA interfaces
 622  * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 623  *      AP about us being back and restart all associated STA interfaces
 624  */
 625 enum mac80211_scan_state {
 626         SCAN_DECISION,
 627         SCAN_SET_CHANNEL,
 628         SCAN_SEND_PROBE,
 629         SCAN_LEAVE_OPER_CHANNEL,
 630         SCAN_ENTER_OPER_CHANNEL,
 631 };
 632
 633 struct ieee80211_local {
 634         /* embed the driver visible part.
 635          * don't cast (use the static inlines below), but we keep
 636          * it first anyway so they become a no-op */
 637         struct ieee80211_hw hw;
 638
 639         const struct ieee80211_ops *ops;
 640
 641         /*
 642          * work stuff, potentially off-channel (in the future)
 643          */
 644         struct list_head work_list;
 645         struct timer_list work_timer;
 646         struct work_struct work_work;
 647         struct sk_buff_head work_skb_queue;
 648
 649         /*
 650          * private workqueue to mac80211. mac80211 makes this accessible
 651          * via ieee80211_queue_work()
 652          */
 653         struct workqueue_struct *workqueue;
 654
 655         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 656         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 657         spinlock_t queue_stop_reason_lock;
 658
 659         int open_count;
 660         int monitors, cooked_mntrs;
 661         /* number of interfaces with corresponding FIF_ flags */
 662         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
 663         unsigned int filter_flags; /* FIF_* */
 664
 665         /* protects the aggregated multicast list and filter calls */
 666         spinlock_t filter_lock;
 667
 668         /* used for uploading changed mc list */
 669         struct work_struct reconfig_filter;
 670
 671         /* used to reconfigure hardware SM PS */
 672         struct work_struct recalc_smps;
 673
 674         /* aggregated multicast list */
 675         struct netdev_hw_addr_list mc_list;
 676
 677         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 678
 679         /*
 680          * suspended is true if we finished all the suspend _and_ we have
 681          * not yet come up from resume. This is to be used by mac80211
 682          * to ensure driver sanity during suspend and mac80211's own
 683          * sanity. It can eventually be used for WoW as well.
 684          */
 685         bool suspended;
 686
 687         /*
 688          * Resuming is true while suspended, but when we're reprogramming the
 689          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 690          * again even though some other parts of the stack are still suspended
 691          * and we still drop received frames to avoid waking the stack.
 692          */
 693         bool resuming;
 694
 695         /*
 696          * quiescing is true during the suspend process _only_ to
 697          * ease timer cancelling etc.
 698          */
 699         bool quiescing;
 700
 701         /* device is started */
 702         bool started;
 703
 704         int tx_headroom; /* required headroom for hardware/radiotap */
 705
 706         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 707          * added to skb_queue will be processed, but frames in
 708          * skb_queue_unreliable may be dropped if the total length of these
 709          * queues increases over the limit. */
 710 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 711         struct tasklet_struct tasklet;
 712         struct sk_buff_head skb_queue;
 713         struct sk_buff_head skb_queue_unreliable;
 714
 715         /* Station data */
 716         /*
 717          * The mutex only protects the list and counter,
 718          * reads are done in RCU.
 719          * Additionally, the lock protects the hash table,
 720          * the pending list and each BSS's TIM bitmap.
 721          */
 722         struct mutex sta_mtx;
 723         spinlock_t sta_lock;
 724         unsigned long num_sta;
 725         struct list_head sta_list, sta_pending_list;
 726         struct sta_info *sta_hash[STA_HASH_SIZE];
 727         struct timer_list sta_cleanup;
 728         struct work_struct sta_finish_work;
 729         int sta_generation;
 730
 731         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 732         struct tasklet_struct tx_pending_tasklet;
 733
 734         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 735
 736         /* number of interfaces with corresponding IFF_ flags */
 737         atomic_t iff_allmultis, iff_promiscs;
 738
 739         struct rate_control_ref *rate_ctrl;
 740
 741         struct crypto_blkcipher *wep_tx_tfm;
 742         struct crypto_blkcipher *wep_rx_tfm;
 743         u32 wep_iv;
 744
 745         /* see iface.c */
 746         struct list_head interfaces;
 747         struct mutex iflist_mtx;
 748
 749         /*
 750          * Key mutex, protects sdata's key_list and sta_info's
 751          * key pointers (write access, they're RCU.)
 752          */
 753         struct mutex key_mtx;
 754
 755         /* mutex for scan and work locking */
 756         struct mutex mtx;
 757
 758         /* Scanning and BSS list */
 759         unsigned long scanning;
 760         struct cfg80211_ssid scan_ssid;
 761         struct cfg80211_scan_request *int_scan_req;
 762         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 763         struct ieee80211_channel *scan_channel;
 764         enum ieee80211_band hw_scan_band;
 765         int scan_channel_idx;
 766         int scan_ies_len;
 767
 768         unsigned long leave_oper_channel_time;
 769         enum mac80211_scan_state next_scan_state;
 770         struct delayed_work scan_work;
 771         struct ieee80211_sub_if_data *scan_sdata;
 772         enum nl80211_channel_type _oper_channel_type;
 773         struct ieee80211_channel *oper_channel, *csa_channel;
 774
 775         /* Temporary remain-on-channel for off-channel operations */
 776         struct ieee80211_channel *tmp_channel;
 777         enum nl80211_channel_type tmp_channel_type;
 778
 779         /* SNMP counters */
 780         /* dot11CountersTable */
 781         u32 dot11TransmittedFragmentCount;
 782         u32 dot11MulticastTransmittedFrameCount;
 783         u32 dot11FailedCount;
 784         u32 dot11RetryCount;
 785         u32 dot11MultipleRetryCount;
 786         u32 dot11FrameDuplicateCount;
 787         u32 dot11ReceivedFragmentCount;
 788         u32 dot11MulticastReceivedFrameCount;
 789         u32 dot11TransmittedFrameCount;
 790
 791 #ifdef CONFIG_MAC80211_LEDS
 792         int tx_led_counter, rx_led_counter;
 793         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 794         char tx_led_name[32], rx_led_name[32],
 795              assoc_led_name[32], radio_led_name[32];
 796 #endif
 797
 798 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 799         /* TX/RX handler statistics */
 800         unsigned int tx_handlers_drop;
 801         unsigned int tx_handlers_queued;
 802         unsigned int tx_handlers_drop_unencrypted;
 803         unsigned int tx_handlers_drop_fragment;
 804         unsigned int tx_handlers_drop_wep;
 805         unsigned int tx_handlers_drop_not_assoc;
 806         unsigned int tx_handlers_drop_unauth_port;
 807         unsigned int rx_handlers_drop;
 808         unsigned int rx_handlers_queued;
 809         unsigned int rx_handlers_drop_nullfunc;
 810         unsigned int rx_handlers_drop_defrag;
 811         unsigned int rx_handlers_drop_short;
 812         unsigned int rx_handlers_drop_passive_scan;
 813         unsigned int tx_expand_skb_head;
 814         unsigned int tx_expand_skb_head_cloned;
 815         unsigned int rx_expand_skb_head;
 816         unsigned int rx_expand_skb_head2;
 817         unsigned int rx_handlers_fragments;
 818         unsigned int tx_status_drop;
 819 #define I802_DEBUG_INC(c) (c)++
 820 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 821 #define I802_DEBUG_INC(c) do { } while (0)
 822 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 823
 824
 825         int total_ps_buffered; /* total number of all buffered unicast and
 826                                 * multicast packets for power saving stations
 827                                 */
 828         int wifi_wme_noack_test;
 829         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 830
 831         /*
 832          * Bitmask of enabled u-apsd queues,
 833          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 834          * to take effect.
 835          */
 836         unsigned int uapsd_queues;
 837
 838         /*
 839          * Maximum number of buffered frames AP can deliver during a
 840          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 841          * Needs a new association to take effect.
 842          */
 843         unsigned int uapsd_max_sp_len;
 844
 845         bool pspolling;
 846         bool offchannel_ps_enabled;
 847         /*
 848          * PS can only be enabled when we have exactly one managed
 849          * interface (and monitors) in PS, this then points there.
 850          */
 851         struct ieee80211_sub_if_data *ps_sdata;
 852         struct work_struct dynamic_ps_enable_work;
 853         struct work_struct dynamic_ps_disable_work;
 854         struct timer_list dynamic_ps_timer;
 855         struct notifier_block network_latency_notifier;
 856         struct notifier_block ifa_notifier;
 857
 858         /*
 859          * The dynamic ps timeout configured from user space via WEXT -
 860          * this will override whatever chosen by mac80211 internally.
 861          */
 862         int dynamic_ps_forced_timeout;
 863         int dynamic_ps_user_timeout;
 864         bool disable_dynamic_ps;
 865
 866         int user_power_level; /* in dBm */
 867         int power_constr_level; /* in dBm */
 868
 869         enum ieee80211_smps_mode smps_mode;
 870
 871         struct work_struct restart_work;
 872
 873 #ifdef CONFIG_MAC80211_DEBUGFS
 874         struct local_debugfsdentries {
 875                 struct dentry *rcdir;
 876                 struct dentry *stations;
 877                 struct dentry *keys;
 878         } debugfs;
 879 #endif
 880
 881         /* dummy netdev for use w/ NAPI */
 882         struct net_device napi_dev;
 883
 884         struct napi_struct napi;
 885 };
 886
 887 static inline struct ieee80211_sub_if_data *
 888 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 889 {
 890         return netdev_priv(dev);
 891 }
 892
 893 /* this struct represents 802.11n's RA/TID combination */
 894 struct ieee80211_ra_tid {
 895         u8 ra[ETH_ALEN];
 896         u16 tid;
 897 };
 898
 899 /* Parsed Information Elements */
 900 struct ieee802_11_elems {
 901         u8 *ie_start;
 902         size_t total_len;
 903
 904         /* pointers to IEs */
 905         u8 *ssid;
 906         u8 *supp_rates;
 907         u8 *fh_params;
 908         u8 *ds_params;
 909         u8 *cf_params;
 910         struct ieee80211_tim_ie *tim;
 911         u8 *ibss_params;
 912         u8 *challenge;
 913         u8 *wpa;
 914         u8 *rsn;
 915         u8 *erp_info;
 916         u8 *ext_supp_rates;
 917         u8 *wmm_info;
 918         u8 *wmm_param;
 919         struct ieee80211_ht_cap *ht_cap_elem;
 920         struct ieee80211_ht_info *ht_info_elem;
 921         struct ieee80211_meshconf_ie *mesh_config;
 922         u8 *mesh_id;
 923         u8 *peer_link;
 924         u8 *preq;
 925         u8 *prep;
 926         u8 *perr;
 927         struct ieee80211_rann_ie *rann;
 928         u8 *ch_switch_elem;
 929         u8 *country_elem;
 930         u8 *pwr_constr_elem;
 931         u8 *quiet_elem;         /* first quite element */
 932         u8 *timeout_int;
 933
 934         /* length of them, respectively */
 935         u8 ssid_len;
 936         u8 supp_rates_len;
 937         u8 fh_params_len;
 938         u8 ds_params_len;
 939         u8 cf_params_len;
 940         u8 tim_len;
 941         u8 ibss_params_len;
 942         u8 challenge_len;
 943         u8 wpa_len;
 944         u8 rsn_len;
 945         u8 erp_info_len;
 946         u8 ext_supp_rates_len;
 947         u8 wmm_info_len;
 948         u8 wmm_param_len;
 949         u8 mesh_id_len;
 950         u8 peer_link_len;
 951         u8 preq_len;
 952         u8 prep_len;
 953         u8 perr_len;
 954         u8 ch_switch_elem_len;
 955         u8 country_elem_len;
 956         u8 pwr_constr_elem_len;
 957         u8 quiet_elem_len;
 958         u8 num_of_quiet_elem;   /* can be more the one */
 959         u8 timeout_int_len;
 960 };
 961
 962 static inline struct ieee80211_local *hw_to_local(
 963         struct ieee80211_hw *hw)
 964 {
 965         return container_of(hw, struct ieee80211_local, hw);
 966 }
 967
 968 static inline struct ieee80211_hw *local_to_hw(
 969         struct ieee80211_local *local)
 970 {
 971         return &local->hw;
 972 }
 973
 974
 975 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 976 {
 977         return compare_ether_addr(raddr, addr) == 0 ||
 978                is_broadcast_ether_addr(raddr);
 979 }
 980
 981
 982 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 983 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 984 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 985                                       u32 changed);
 986 void ieee80211_configure_filter(struct ieee80211_local *local);
 987 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 988
 989 extern bool ieee80211_disable_40mhz_24ghz;
 990
 991 /* STA code */
 992 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 993 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 994                        struct cfg80211_auth_request *req);
 995 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 996                         struct cfg80211_assoc_request *req);
 997 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 998                          struct cfg80211_deauth_request *req,
 999                          void *cookie);
1000 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1001                            struct cfg80211_disassoc_request *req,
1002                            void *cookie);
1003 void ieee80211_send_pspoll(struct ieee80211_local *local,
1004                            struct ieee80211_sub_if_data *sdata);
1005 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1006 int ieee80211_max_network_latency(struct notifier_block *nb,
1007                                   unsigned long data, void *dummy);
1008 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1009 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1010                                       struct ieee80211_channel_sw_ie *sw_elem,
1011                                       struct ieee80211_bss *bss,
1012                                       u64 timestamp);
1013 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1014 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1015 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1016 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1017                                   struct sk_buff *skb);
1018
1019 /* IBSS code */
1020 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1021 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1022 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1023                                         u8 *bssid, u8 *addr, u32 supp_rates,
1024                                         gfp_t gfp);
1025 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1026                         struct cfg80211_ibss_params *params);
1027 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1028 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1029 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1030 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1031 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1032                                    struct sk_buff *skb);
1033
1034 /* mesh code */
1035 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1036 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1037                                    struct sk_buff *skb);
1038
1039 /* scan/BSS handling */
1040 void ieee80211_scan_work(struct work_struct *work);
1041 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1042                                     const u8 *ssid, u8 ssid_len,
1043                                     struct ieee80211_channel *chan);
1044 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1045                            struct cfg80211_scan_request *req);
1046 void ieee80211_scan_cancel(struct ieee80211_local *local);
1047 ieee80211_rx_result
1048 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1049
1050 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1051 struct ieee80211_bss *
1052 ieee80211_bss_info_update(struct ieee80211_local *local,
1053                           struct ieee80211_rx_status *rx_status,
1054                           struct ieee80211_mgmt *mgmt,
1055                           size_t len,
1056                           struct ieee802_11_elems *elems,
1057                           struct ieee80211_channel *channel,
1058                           bool beacon);
1059 struct ieee80211_bss *
1060 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1061                      u8 *ssid, u8 ssid_len);
1062 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1063                           struct ieee80211_bss *bss);
1064
1065 /* off-channel helpers */
1066 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
1067 void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
1068 void ieee80211_offchannel_return(struct ieee80211_local *local,
1069                                  bool enable_beaconing);
1070
1071 /* interface handling */
1072 int ieee80211_iface_init(void);
1073 void ieee80211_iface_exit(void);
1074 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1075                      struct net_device **new_dev, enum nl80211_iftype type,
1076                      struct vif_params *params);
1077 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1078                              enum nl80211_iftype type);
1079 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1080 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1081 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1082 void ieee80211_recalc_idle(struct ieee80211_local *local);
1083
1084 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1085 {
1086         return netif_running(sdata->dev);
1087 }
1088
1089 /* tx handling */
1090 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1091 void ieee80211_tx_pending(unsigned long data);
1092 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1093                                          struct net_device *dev);
1094 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1095                                        struct net_device *dev);
1096
1097 /*
1098  * radiotap header for status frames
1099  */
1100 struct ieee80211_tx_status_rtap_hdr {
1101         struct ieee80211_radiotap_header hdr;
1102         u8 rate;
1103         u8 padding_for_rate;
1104         __le16 tx_flags;
1105         u8 data_retries;
1106 } __packed;
1107
1108
1109 /* HT */
1110 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1111                                        struct ieee80211_ht_cap *ht_cap_ie,
1112                                        struct ieee80211_sta_ht_cap *ht_cap);
1113 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1114 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1115                           const u8 *da, u16 tid,
1116                           u16 initiator, u16 reason_code);
1117 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1118                                enum ieee80211_smps_mode smps, const u8 *da,
1119                                const u8 *bssid);
1120 void ieee80211_request_smps_work(struct work_struct *work);
1121
1122 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1123                                      u16 initiator, u16 reason);
1124 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1125                                     u16 initiator, u16 reason);
1126 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1127 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1128                              struct sta_info *sta,
1129                              struct ieee80211_mgmt *mgmt, size_t len);
1130 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1131                                   struct sta_info *sta,
1132                                   struct ieee80211_mgmt *mgmt,
1133                                   size_t len);
1134 void ieee80211_process_addba_request(struct ieee80211_local *local,
1135                                      struct sta_info *sta,
1136                                      struct ieee80211_mgmt *mgmt,
1137                                      size_t len);
1138
1139 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1140                                    enum ieee80211_back_parties initiator);
1141 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1142                                     enum ieee80211_back_parties initiator);
1143 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1144 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1145 void ieee80211_ba_session_work(struct work_struct *work);
1146 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1147 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1148
1149 /* Spectrum management */
1150 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1151                                        struct ieee80211_mgmt *mgmt,
1152                                        size_t len);
1153
1154 /* Suspend/resume and hw reconfiguration */
1155 int ieee80211_reconfig(struct ieee80211_local *local);
1156 void ieee80211_stop_device(struct ieee80211_local *local);
1157
1158 #ifdef CONFIG_PM
1159 int __ieee80211_suspend(struct ieee80211_hw *hw);
1160
1161 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1162 {
1163         return ieee80211_reconfig(hw_to_local(hw));
1164 }
1165 #else
1166 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1167 {
1168         return 0;
1169 }
1170
1171 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1172 {
1173         return 0;
1174 }
1175 #endif
1176
1177 /* utility functions/constants */
1178 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1179 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1180                         enum nl80211_iftype type);
1181 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1182                              int rate, int erp, int short_preamble);
1183 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1184                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1185                                      gfp_t gfp);
1186 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1187 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1188 void ieee802_11_parse_elems(u8 *start, size_t len,
1189                             struct ieee802_11_elems *elems);
1190 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1191                                struct ieee802_11_elems *elems,
1192                                u64 filter, u32 crc);
1193 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1194                               enum ieee80211_band band);
1195
1196 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1197 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1198 void ieee80211_dynamic_ps_timer(unsigned long data);
1199 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1200                              struct ieee80211_sub_if_data *sdata,
1201                              int powersave);
1202 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1203                              struct ieee80211_hdr *hdr);
1204 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1205
1206 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1207                                      enum queue_stop_reason reason);
1208 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1209                                      enum queue_stop_reason reason);
1210 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1211                                     enum queue_stop_reason reason);
1212 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1213                                     enum queue_stop_reason reason);
1214 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1215                                struct sk_buff *skb);
1216 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1217                                struct sk_buff_head *skbs);
1218
1219 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1220                          u16 transaction, u16 auth_alg,
1221                          u8 *extra, size_t extra_len, const u8 *bssid,
1222                          const u8 *key, u8 key_len, u8 key_idx);
1223 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1224                              const u8 *ie, size_t ie_len,
1225                              enum ieee80211_band band);
1226 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1227                               const u8 *ssid, size_t ssid_len,
1228                               const u8 *ie, size_t ie_len);
1229
1230 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1231                                   const size_t supp_rates_len,
1232                                   const u8 *supp_rates);
1233 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1234                             struct ieee802_11_elems *elems,
1235                             enum ieee80211_band band);
1236 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1237                              enum ieee80211_smps_mode smps_mode);
1238 void ieee80211_recalc_smps(struct ieee80211_local *local,
1239                            struct ieee80211_sub_if_data *forsdata);
1240
1241 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1242                           const u8 *ids, int n_ids, size_t offset);
1243 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1244
1245 /* internal work items */
1246 void ieee80211_work_init(struct ieee80211_local *local);
1247 void ieee80211_add_work(struct ieee80211_work *wk);
1248 void free_work(struct ieee80211_work *wk);
1249 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1250 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1251                                            struct sk_buff *skb);
1252 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1253                                    struct ieee80211_channel *chan,
1254                                    enum nl80211_channel_type channel_type,
1255                                    unsigned int duration, u64 *cookie);
1256 int ieee80211_wk_cancel_remain_on_channel(
1257         struct ieee80211_sub_if_data *sdata, u64 cookie);
1258
1259 /* channel management */
1260 enum ieee80211_chan_mode {
1261         CHAN_MODE_UNDEFINED,
1262         CHAN_MODE_HOPPING,
1263         CHAN_MODE_FIXED,
1264 };
1265
1266 enum ieee80211_chan_mode
1267 ieee80211_get_channel_mode(struct ieee80211_local *local,
1268                            struct ieee80211_sub_if_data *ignore);
1269 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1270                                 struct ieee80211_sub_if_data *sdata,
1271                                 enum nl80211_channel_type chantype);
1272
1273 #ifdef CONFIG_MAC80211_NOINLINE
1274 #define debug_noinline noinline
1275 #else
1276 #define debug_noinline
1277 #endif
1278
1279 #endif /* IEEE80211_I_H */