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 #define TU_TO_EXP_TIME(x)       (jiffies + usecs_to_jiffies((x) * 1024))
  54
  55 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  56         (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK |   \
  57          IEEE80211_WMM_IE_STA_QOSINFO_AC_BE |   \
  58          IEEE80211_WMM_IE_STA_QOSINFO_AC_VI |   \
  59          IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
  60
  61 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  62         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  63
  64 struct ieee80211_fragment_entry {
  65         unsigned long first_frag_time;
  66         unsigned int seq;
  67         unsigned int rx_queue;
  68         unsigned int last_frag;
  69         unsigned int extra_len;
  70         struct sk_buff_head skb_list;
  71         int ccmp; /* Whether fragments were encrypted with CCMP */
  72         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  73 };
  74
  75
  76 struct ieee80211_bss {
  77         /* don't want to look up all the time */
  78         size_t ssid_len;
  79         u8 ssid[IEEE80211_MAX_SSID_LEN];
  80
  81         u8 dtim_period;
  82
  83         bool wmm_used;
  84         bool uapsd_supported;
  85
  86         unsigned long last_probe_resp;
  87
  88 #ifdef CONFIG_MAC80211_MESH
  89         u8 *mesh_id;
  90         size_t mesh_id_len;
  91         u8 *mesh_cfg;
  92 #endif
  93
  94 #define IEEE80211_MAX_SUPP_RATES 32
  95         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  96         size_t supp_rates_len;
  97
  98         /*
  99          * During assocation, we save an ERP value from a probe response so
 100          * that we can feed ERP info to the driver when handling the
 101          * association completes. these fields probably won't be up-to-date
 102          * otherwise, you probably don't want to use them.
 103          */
 104         bool has_erp_value;
 105         u8 erp_value;
 106 };
 107
 108 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 109 {
 110 #ifdef CONFIG_MAC80211_MESH
 111         return bss->mesh_cfg;
 112 #endif
 113         return NULL;
 114 }
 115
 116 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 117 {
 118 #ifdef CONFIG_MAC80211_MESH
 119         return bss->mesh_id;
 120 #endif
 121         return NULL;
 122 }
 123
 124 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 125 {
 126 #ifdef CONFIG_MAC80211_MESH
 127         return bss->mesh_id_len;
 128 #endif
 129         return 0;
 130 }
 131
 132
 133 typedef unsigned __bitwise__ ieee80211_tx_result;
 134 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 135 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 136 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 137
 138 #define IEEE80211_TX_FRAGMENTED         BIT(0)
 139 #define IEEE80211_TX_UNICAST            BIT(1)
 140 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 141
 142 struct ieee80211_tx_data {
 143         struct sk_buff *skb;
 144         struct ieee80211_local *local;
 145         struct ieee80211_sub_if_data *sdata;
 146         struct sta_info *sta;
 147         struct ieee80211_key *key;
 148
 149         struct ieee80211_channel *channel;
 150
 151         u16 ethertype;
 152         unsigned int flags;
 153 };
 154
 155
 156 typedef unsigned __bitwise__ ieee80211_rx_result;
 157 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 158 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 159 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 160 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 161
 162 #define IEEE80211_RX_IN_SCAN            BIT(0)
 163 /* frame is destined to interface currently processed (incl. multicast frames) */
 164 #define IEEE80211_RX_RA_MATCH           BIT(1)
 165 #define IEEE80211_RX_AMSDU              BIT(2)
 166 #define IEEE80211_RX_FRAGMENTED         BIT(3)
 167 #define IEEE80211_MALFORMED_ACTION_FRM  BIT(4)
 168 /* only add flags here that do not change with subframes of an aMPDU */
 169
 170 struct ieee80211_rx_data {
 171         struct sk_buff *skb;
 172         struct ieee80211_local *local;
 173         struct ieee80211_sub_if_data *sdata;
 174         struct sta_info *sta;
 175         struct ieee80211_key *key;
 176
 177         unsigned int flags;
 178         int queue;
 179         u32 tkip_iv32;
 180         u16 tkip_iv16;
 181 };
 182
 183 struct beacon_data {
 184         u8 *head, *tail;
 185         int head_len, tail_len;
 186         int dtim_period;
 187 };
 188
 189 struct ieee80211_if_ap {
 190         struct beacon_data *beacon;
 191
 192         struct list_head vlans;
 193
 194         /* yes, this looks ugly, but guarantees that we can later use
 195          * bitmap_empty :)
 196          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 197         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 198         struct sk_buff_head ps_bc_buf;
 199         atomic_t num_sta_ps; /* number of stations in PS mode */
 200         int dtim_count;
 201 };
 202
 203 struct ieee80211_if_wds {
 204         struct sta_info *sta;
 205         u8 remote_addr[ETH_ALEN];
 206 };
 207
 208 struct ieee80211_if_vlan {
 209         struct list_head list;
 210
 211         /* used for all tx if the VLAN is configured to 4-addr mode */
 212         struct sta_info *sta;
 213 };
 214
 215 struct mesh_stats {
 216         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 217         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 218         __u32 fwded_frames;             /* Mesh total forwarded frames */
 219         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 220         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 221         atomic_t estab_plinks;
 222 };
 223
 224 #define PREQ_Q_F_START          0x1
 225 #define PREQ_Q_F_REFRESH        0x2
 226 struct mesh_preq_queue {
 227         struct list_head list;
 228         u8 dst[ETH_ALEN];
 229         u8 flags;
 230 };
 231
 232 enum ieee80211_work_type {
 233         IEEE80211_WORK_ABORT,
 234         IEEE80211_WORK_DIRECT_PROBE,
 235         IEEE80211_WORK_AUTH,
 236         IEEE80211_WORK_ASSOC_BEACON_WAIT,
 237         IEEE80211_WORK_ASSOC,
 238         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 239 };
 240
 241 /**
 242  * enum work_done_result - indicates what to do after work was done
 243  *
 244  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 245  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 246  *      should be requeued.
 247  */
 248 enum work_done_result {
 249         WORK_DONE_DESTROY,
 250         WORK_DONE_REQUEUE,
 251 };
 252
 253 struct ieee80211_work {
 254         struct list_head list;
 255
 256         struct rcu_head rcu_head;
 257
 258         struct ieee80211_sub_if_data *sdata;
 259
 260         enum work_done_result (*done)(struct ieee80211_work *wk,
 261                                       struct sk_buff *skb);
 262
 263         struct ieee80211_channel *chan;
 264         enum nl80211_channel_type chan_type;
 265
 266         unsigned long timeout;
 267         enum ieee80211_work_type type;
 268
 269         u8 filter_ta[ETH_ALEN];
 270
 271         bool started;
 272
 273         union {
 274                 struct {
 275                         int tries;
 276                         u16 algorithm, transaction;
 277                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 278                         u8 ssid_len;
 279                         u8 key[WLAN_KEY_LEN_WEP104];
 280                         u8 key_len, key_idx;
 281                         bool privacy;
 282                 } probe_auth;
 283                 struct {
 284                         struct cfg80211_bss *bss;
 285                         const u8 *supp_rates;
 286                         const u8 *ht_information_ie;
 287                         enum ieee80211_smps_mode smps;
 288                         int tries;
 289                         u16 capability;
 290                         u8 prev_bssid[ETH_ALEN];
 291                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 292                         u8 ssid_len;
 293                         u8 supp_rates_len;
 294                         bool wmm_used, use_11n, uapsd_used;
 295                 } assoc;
 296                 struct {
 297                         u32 duration;
 298                 } remain;
 299         };
 300
 301         int ie_len;
 302         /* must be last */
 303         u8 ie[0];
 304 };
 305
 306 /* flags used in struct ieee80211_if_managed.flags */
 307 enum ieee80211_sta_flags {
 308         IEEE80211_STA_BEACON_POLL       = BIT(0),
 309         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 310         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 311         IEEE80211_STA_DISABLE_11N       = BIT(4),
 312         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 313         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 314         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 315         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 316         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 317 };
 318
 319 struct ieee80211_if_managed {
 320         struct timer_list timer;
 321         struct timer_list conn_mon_timer;
 322         struct timer_list bcn_mon_timer;
 323         struct timer_list chswitch_timer;
 324         struct work_struct monitor_work;
 325         struct work_struct chswitch_work;
 326         struct work_struct beacon_connection_loss_work;
 327
 328         unsigned long probe_timeout;
 329         int probe_send_count;
 330
 331         struct mutex mtx;
 332         struct cfg80211_bss *associated;
 333
 334         u8 bssid[ETH_ALEN];
 335
 336         u16 aid;
 337
 338         unsigned long timers_running; /* used for quiesce/restart */
 339         bool powersave; /* powersave requested for this iface */
 340         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 341                                  ap_smps, /* smps mode AP thinks we're in */
 342                                  driver_smps_mode; /* smps mode request */
 343
 344         struct work_struct request_smps_work;
 345
 346         unsigned int flags;
 347
 348         u32 beacon_crc;
 349
 350         enum {
 351                 IEEE80211_MFP_DISABLED,
 352                 IEEE80211_MFP_OPTIONAL,
 353                 IEEE80211_MFP_REQUIRED
 354         } mfp; /* management frame protection */
 355
 356         int wmm_last_param_set;
 357
 358         u8 use_4addr;
 359
 360         /* Signal strength from the last Beacon frame in the current BSS. */
 361         int last_beacon_signal;
 362
 363         /*
 364          * Weighted average of the signal strength from Beacon frames in the
 365          * current BSS. This is in units of 1/16 of the signal unit to maintain
 366          * accuracy and to speed up calculations, i.e., the value need to be
 367          * divided by 16 to get the actual value.
 368          */
 369         int ave_beacon_signal;
 370
 371         /*
 372          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 373          * that triggered a cqm event. 0 indicates that no event has been
 374          * generated for the current association.
 375          */
 376         int last_cqm_event_signal;
 377 };
 378
 379 struct ieee80211_if_ibss {
 380         struct timer_list timer;
 381
 382         struct mutex mtx;
 383
 384         unsigned long last_scan_completed;
 385
 386         u32 basic_rates;
 387
 388         bool timer_running;
 389
 390         bool fixed_bssid;
 391         bool fixed_channel;
 392         bool privacy;
 393
 394         u8 bssid[ETH_ALEN];
 395         u8 ssid[IEEE80211_MAX_SSID_LEN];
 396         u8 ssid_len, ie_len;
 397         u8 *ie;
 398         struct ieee80211_channel *channel;
 399
 400         unsigned long ibss_join_req;
 401         /* probe response/beacon for IBSS */
 402         struct sk_buff *presp, *skb;
 403
 404         enum {
 405                 IEEE80211_IBSS_MLME_SEARCH,
 406                 IEEE80211_IBSS_MLME_JOINED,
 407         } state;
 408 };
 409
 410 struct ieee80211_if_mesh {
 411         struct timer_list housekeeping_timer;
 412         struct timer_list mesh_path_timer;
 413         struct timer_list mesh_path_root_timer;
 414
 415         unsigned long timers_running;
 416
 417         unsigned long wrkq_flags;
 418
 419         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 420         size_t mesh_id_len;
 421         /* Active Path Selection Protocol Identifier */
 422         u8 mesh_pp_id;
 423         /* Active Path Selection Metric Identifier */
 424         u8 mesh_pm_id;
 425         /* Congestion Control Mode Identifier */
 426         u8 mesh_cc_id;
 427         /* Synchronization Protocol Identifier */
 428         u8 mesh_sp_id;
 429         /* Authentication Protocol Identifier */
 430         u8 mesh_auth_id;
 431         /* Local mesh Sequence Number */
 432         u32 sn;
 433         /* Last used PREQ ID */
 434         u32 preq_id;
 435         atomic_t mpaths;
 436         /* Timestamp of last SN update */
 437         unsigned long last_sn_update;
 438         /* Timestamp of last SN sent */
 439         unsigned long last_preq;
 440         struct mesh_rmc *rmc;
 441         spinlock_t mesh_preq_queue_lock;
 442         struct mesh_preq_queue preq_queue;
 443         int preq_queue_len;
 444         struct mesh_stats mshstats;
 445         struct mesh_config mshcfg;
 446         u32 mesh_seqnum;
 447         bool accepting_plinks;
 448 };
 449
 450 #ifdef CONFIG_MAC80211_MESH
 451 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 452         do { (msh)->mshstats.name++; } while (0)
 453 #else
 454 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 455         do { } while (0)
 456 #endif
 457
 458 /**
 459  * enum ieee80211_sub_if_data_flags - virtual interface flags
 460  *
 461  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 462  * @IEEE80211_SDATA_PROMISC: interface is promisc
 463  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 464  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 465  *      associated stations and deliver multicast frames both
 466  *      back to wireless media and to the local net stack.
 467  */
 468 enum ieee80211_sub_if_data_flags {
 469         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 470         IEEE80211_SDATA_PROMISC                 = BIT(1),
 471         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 472         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 473 };
 474
 475 struct ieee80211_sub_if_data {
 476         struct list_head list;
 477
 478         struct wireless_dev wdev;
 479
 480         /* keys */
 481         struct list_head key_list;
 482
 483         struct net_device *dev;
 484         struct ieee80211_local *local;
 485
 486         unsigned int flags;
 487
 488         int drop_unencrypted;
 489
 490         char name[IFNAMSIZ];
 491
 492         /*
 493          * keep track of whether the HT opmode (stored in
 494          * vif.bss_info.ht_operation_mode) is valid.
 495          */
 496         bool ht_opmode_valid;
 497
 498         /* to detect idle changes */
 499         bool old_idle;
 500
 501         /* Fragment table for host-based reassembly */
 502         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 503         unsigned int fragment_next;
 504
 505 #define NUM_DEFAULT_KEYS 4
 506 #define NUM_DEFAULT_MGMT_KEYS 2
 507         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 508         struct ieee80211_key *default_key;
 509         struct ieee80211_key *default_mgmt_key;
 510
 511         u16 sequence_number;
 512
 513         struct work_struct work;
 514         struct sk_buff_head skb_queue;
 515
 516         bool arp_filter_state;
 517
 518         /*
 519          * AP this belongs to: self in AP mode and
 520          * corresponding AP in VLAN mode, NULL for
 521          * all others (might be needed later in IBSS)
 522          */
 523         struct ieee80211_if_ap *bss;
 524
 525         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 526         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 527
 528         union {
 529                 struct ieee80211_if_ap ap;
 530                 struct ieee80211_if_wds wds;
 531                 struct ieee80211_if_vlan vlan;
 532                 struct ieee80211_if_managed mgd;
 533                 struct ieee80211_if_ibss ibss;
 534 #ifdef CONFIG_MAC80211_MESH
 535                 struct ieee80211_if_mesh mesh;
 536 #endif
 537                 u32 mntr_flags;
 538         } u;
 539
 540 #ifdef CONFIG_MAC80211_DEBUGFS
 541         struct {
 542                 struct dentry *dir;
 543                 struct dentry *default_key;
 544                 struct dentry *default_mgmt_key;
 545         } debugfs;
 546 #endif
 547         /* must be last, dynamically sized area in this! */
 548         struct ieee80211_vif vif;
 549 };
 550
 551 static inline
 552 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 553 {
 554         return container_of(p, struct ieee80211_sub_if_data, vif);
 555 }
 556
 557 static inline void
 558 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
 559                             u8 mesh_id_len, u8 *mesh_id)
 560 {
 561 #ifdef CONFIG_MAC80211_MESH
 562         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 563         ifmsh->mesh_id_len = mesh_id_len;
 564         memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
 565 #else
 566         WARN_ON(1);
 567 #endif
 568 }
 569
 570 enum sdata_queue_type {
 571         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 572         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 573         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 574 };
 575
 576 enum {
 577         IEEE80211_RX_MSG        = 1,
 578         IEEE80211_TX_STATUS_MSG = 2,
 579 };
 580
 581 enum queue_stop_reason {
 582         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 583         IEEE80211_QUEUE_STOP_REASON_PS,
 584         IEEE80211_QUEUE_STOP_REASON_CSA,
 585         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 586         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 587         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 588 };
 589
 590 /**
 591  * mac80211 scan flags - currently active scan mode
 592  *
 593  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 594  *      well be on the operating channel
 595  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 596  *      determine if we are on the operating channel or not
 597  * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
 598  *      gets only set in conjunction with SCAN_SW_SCANNING
 599  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 600  *      that the scan completed.
 601  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 602  *      a scan complete for an aborted scan.
 603  */
 604 enum {
 605         SCAN_SW_SCANNING,
 606         SCAN_HW_SCANNING,
 607         SCAN_OFF_CHANNEL,
 608         SCAN_COMPLETED,
 609         SCAN_ABORTED,
 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         bool wiphy_ciphers_allocated;
 666
 667         /* protects the aggregated multicast list and filter calls */
 668         spinlock_t filter_lock;
 669
 670         /* used for uploading changed mc list */
 671         struct work_struct reconfig_filter;
 672
 673         /* used to reconfigure hardware SM PS */
 674         struct work_struct recalc_smps;
 675
 676         /* aggregated multicast list */
 677         struct netdev_hw_addr_list mc_list;
 678
 679         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 680
 681         /*
 682          * suspended is true if we finished all the suspend _and_ we have
 683          * not yet come up from resume. This is to be used by mac80211
 684          * to ensure driver sanity during suspend and mac80211's own
 685          * sanity. It can eventually be used for WoW as well.
 686          */
 687         bool suspended;
 688
 689         /*
 690          * Resuming is true while suspended, but when we're reprogramming the
 691          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 692          * again even though some other parts of the stack are still suspended
 693          * and we still drop received frames to avoid waking the stack.
 694          */
 695         bool resuming;
 696
 697         /*
 698          * quiescing is true during the suspend process _only_ to
 699          * ease timer cancelling etc.
 700          */
 701         bool quiescing;
 702
 703         /* device is started */
 704         bool started;
 705
 706         int tx_headroom; /* required headroom for hardware/radiotap */
 707
 708         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 709          * added to skb_queue will be processed, but frames in
 710          * skb_queue_unreliable may be dropped if the total length of these
 711          * queues increases over the limit. */
 712 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 713         struct tasklet_struct tasklet;
 714         struct sk_buff_head skb_queue;
 715         struct sk_buff_head skb_queue_unreliable;
 716
 717         /* Station data */
 718         /*
 719          * The mutex only protects the list and counter,
 720          * reads are done in RCU.
 721          * Additionally, the lock protects the hash table,
 722          * the pending list and each BSS's TIM bitmap.
 723          */
 724         struct mutex sta_mtx;
 725         spinlock_t sta_lock;
 726         unsigned long num_sta;
 727         struct list_head sta_list, sta_pending_list;
 728         struct sta_info *sta_hash[STA_HASH_SIZE];
 729         struct timer_list sta_cleanup;
 730         struct work_struct sta_finish_work;
 731         int sta_generation;
 732
 733         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 734         struct tasklet_struct tx_pending_tasklet;
 735
 736         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 737
 738         /* number of interfaces with corresponding IFF_ flags */
 739         atomic_t iff_allmultis, iff_promiscs;
 740
 741         struct rate_control_ref *rate_ctrl;
 742
 743         struct crypto_blkcipher *wep_tx_tfm;
 744         struct crypto_blkcipher *wep_rx_tfm;
 745         u32 wep_iv;
 746
 747         /* see iface.c */
 748         struct list_head interfaces;
 749         struct mutex iflist_mtx;
 750
 751         /*
 752          * Key mutex, protects sdata's key_list and sta_info's
 753          * key pointers (write access, they're RCU.)
 754          */
 755         struct mutex key_mtx;
 756
 757         /* mutex for scan and work locking */
 758         struct mutex mtx;
 759
 760         /* Scanning and BSS list */
 761         unsigned long scanning;
 762         struct cfg80211_ssid scan_ssid;
 763         struct cfg80211_scan_request *int_scan_req;
 764         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 765         struct ieee80211_channel *scan_channel;
 766         enum ieee80211_band hw_scan_band;
 767         int scan_channel_idx;
 768         int scan_ies_len;
 769
 770         unsigned long leave_oper_channel_time;
 771         enum mac80211_scan_state next_scan_state;
 772         struct delayed_work scan_work;
 773         struct ieee80211_sub_if_data *scan_sdata;
 774         enum nl80211_channel_type _oper_channel_type;
 775         struct ieee80211_channel *oper_channel, *csa_channel;
 776
 777         /* Temporary remain-on-channel for off-channel operations */
 778         struct ieee80211_channel *tmp_channel;
 779         enum nl80211_channel_type tmp_channel_type;
 780
 781         /* SNMP counters */
 782         /* dot11CountersTable */
 783         u32 dot11TransmittedFragmentCount;
 784         u32 dot11MulticastTransmittedFrameCount;
 785         u32 dot11FailedCount;
 786         u32 dot11RetryCount;
 787         u32 dot11MultipleRetryCount;
 788         u32 dot11FrameDuplicateCount;
 789         u32 dot11ReceivedFragmentCount;
 790         u32 dot11MulticastReceivedFrameCount;
 791         u32 dot11TransmittedFrameCount;
 792
 793 #ifdef CONFIG_MAC80211_LEDS
 794         int tx_led_counter, rx_led_counter;
 795         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 796         char tx_led_name[32], rx_led_name[32],
 797              assoc_led_name[32], radio_led_name[32];
 798 #endif
 799
 800 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 801         /* TX/RX handler statistics */
 802         unsigned int tx_handlers_drop;
 803         unsigned int tx_handlers_queued;
 804         unsigned int tx_handlers_drop_unencrypted;
 805         unsigned int tx_handlers_drop_fragment;
 806         unsigned int tx_handlers_drop_wep;
 807         unsigned int tx_handlers_drop_not_assoc;
 808         unsigned int tx_handlers_drop_unauth_port;
 809         unsigned int rx_handlers_drop;
 810         unsigned int rx_handlers_queued;
 811         unsigned int rx_handlers_drop_nullfunc;
 812         unsigned int rx_handlers_drop_defrag;
 813         unsigned int rx_handlers_drop_short;
 814         unsigned int rx_handlers_drop_passive_scan;
 815         unsigned int tx_expand_skb_head;
 816         unsigned int tx_expand_skb_head_cloned;
 817         unsigned int rx_expand_skb_head;
 818         unsigned int rx_expand_skb_head2;
 819         unsigned int rx_handlers_fragments;
 820         unsigned int tx_status_drop;
 821 #define I802_DEBUG_INC(c) (c)++
 822 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 823 #define I802_DEBUG_INC(c) do { } while (0)
 824 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 825
 826
 827         int total_ps_buffered; /* total number of all buffered unicast and
 828                                 * multicast packets for power saving stations
 829                                 */
 830         int wifi_wme_noack_test;
 831         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 832
 833         /*
 834          * Bitmask of enabled u-apsd queues,
 835          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 836          * to take effect.
 837          */
 838         unsigned int uapsd_queues;
 839
 840         /*
 841          * Maximum number of buffered frames AP can deliver during a
 842          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 843          * Needs a new association to take effect.
 844          */
 845         unsigned int uapsd_max_sp_len;
 846
 847         bool pspolling;
 848         bool offchannel_ps_enabled;
 849         /*
 850          * PS can only be enabled when we have exactly one managed
 851          * interface (and monitors) in PS, this then points there.
 852          */
 853         struct ieee80211_sub_if_data *ps_sdata;
 854         struct work_struct dynamic_ps_enable_work;
 855         struct work_struct dynamic_ps_disable_work;
 856         struct timer_list dynamic_ps_timer;
 857         struct notifier_block network_latency_notifier;
 858         struct notifier_block ifa_notifier;
 859
 860         /*
 861          * The dynamic ps timeout configured from user space via WEXT -
 862          * this will override whatever chosen by mac80211 internally.
 863          */
 864         int dynamic_ps_forced_timeout;
 865         int dynamic_ps_user_timeout;
 866         bool disable_dynamic_ps;
 867
 868         int user_power_level; /* in dBm */
 869         int power_constr_level; /* in dBm */
 870
 871         enum ieee80211_smps_mode smps_mode;
 872
 873         struct work_struct restart_work;
 874
 875 #ifdef CONFIG_MAC80211_DEBUGFS
 876         struct local_debugfsdentries {
 877                 struct dentry *rcdir;
 878                 struct dentry *stations;
 879                 struct dentry *keys;
 880         } debugfs;
 881 #endif
 882
 883         /* dummy netdev for use w/ NAPI */
 884         struct net_device napi_dev;
 885
 886         struct napi_struct napi;
 887 };
 888
 889 static inline struct ieee80211_sub_if_data *
 890 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 891 {
 892         return netdev_priv(dev);
 893 }
 894
 895 /* this struct represents 802.11n's RA/TID combination */
 896 struct ieee80211_ra_tid {
 897         u8 ra[ETH_ALEN];
 898         u16 tid;
 899 };
 900
 901 /* Parsed Information Elements */
 902 struct ieee802_11_elems {
 903         u8 *ie_start;
 904         size_t total_len;
 905
 906         /* pointers to IEs */
 907         u8 *ssid;
 908         u8 *supp_rates;
 909         u8 *fh_params;
 910         u8 *ds_params;
 911         u8 *cf_params;
 912         struct ieee80211_tim_ie *tim;
 913         u8 *ibss_params;
 914         u8 *challenge;
 915         u8 *wpa;
 916         u8 *rsn;
 917         u8 *erp_info;
 918         u8 *ext_supp_rates;
 919         u8 *wmm_info;
 920         u8 *wmm_param;
 921         struct ieee80211_ht_cap *ht_cap_elem;
 922         struct ieee80211_ht_info *ht_info_elem;
 923         struct ieee80211_meshconf_ie *mesh_config;
 924         u8 *mesh_id;
 925         u8 *peer_link;
 926         u8 *preq;
 927         u8 *prep;
 928         u8 *perr;
 929         struct ieee80211_rann_ie *rann;
 930         u8 *ch_switch_elem;
 931         u8 *country_elem;
 932         u8 *pwr_constr_elem;
 933         u8 *quiet_elem;         /* first quite element */
 934         u8 *timeout_int;
 935
 936         /* length of them, respectively */
 937         u8 ssid_len;
 938         u8 supp_rates_len;
 939         u8 fh_params_len;
 940         u8 ds_params_len;
 941         u8 cf_params_len;
 942         u8 tim_len;
 943         u8 ibss_params_len;
 944         u8 challenge_len;
 945         u8 wpa_len;
 946         u8 rsn_len;
 947         u8 erp_info_len;
 948         u8 ext_supp_rates_len;
 949         u8 wmm_info_len;
 950         u8 wmm_param_len;
 951         u8 mesh_id_len;
 952         u8 peer_link_len;
 953         u8 preq_len;
 954         u8 prep_len;
 955         u8 perr_len;
 956         u8 ch_switch_elem_len;
 957         u8 country_elem_len;
 958         u8 pwr_constr_elem_len;
 959         u8 quiet_elem_len;
 960         u8 num_of_quiet_elem;   /* can be more the one */
 961         u8 timeout_int_len;
 962 };
 963
 964 static inline struct ieee80211_local *hw_to_local(
 965         struct ieee80211_hw *hw)
 966 {
 967         return container_of(hw, struct ieee80211_local, hw);
 968 }
 969
 970 static inline struct ieee80211_hw *local_to_hw(
 971         struct ieee80211_local *local)
 972 {
 973         return &local->hw;
 974 }
 975
 976
 977 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 978 {
 979         return compare_ether_addr(raddr, addr) == 0 ||
 980                is_broadcast_ether_addr(raddr);
 981 }
 982
 983
 984 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 985 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 986 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 987                                       u32 changed);
 988 void ieee80211_configure_filter(struct ieee80211_local *local);
 989 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 990
 991 extern bool ieee80211_disable_40mhz_24ghz;
 992
 993 /* STA code */
 994 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 995 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 996                        struct cfg80211_auth_request *req);
 997 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 998                         struct cfg80211_assoc_request *req);
 999 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1000                          struct cfg80211_deauth_request *req,
1001                          void *cookie);
1002 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1003                            struct cfg80211_disassoc_request *req,
1004                            void *cookie);
1005 void ieee80211_send_pspoll(struct ieee80211_local *local,
1006                            struct ieee80211_sub_if_data *sdata);
1007 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1008 int ieee80211_max_network_latency(struct notifier_block *nb,
1009                                   unsigned long data, void *dummy);
1010 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1011 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1012                                       struct ieee80211_channel_sw_ie *sw_elem,
1013                                       struct ieee80211_bss *bss,
1014                                       u64 timestamp);
1015 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1016 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1017 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1018 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1019                                   struct sk_buff *skb);
1020
1021 /* IBSS code */
1022 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1023 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1024 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1025                                         u8 *bssid, u8 *addr, u32 supp_rates,
1026                                         gfp_t gfp);
1027 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1028                         struct cfg80211_ibss_params *params);
1029 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1030 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1031 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1032 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1033 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1034                                    struct sk_buff *skb);
1035
1036 /* mesh code */
1037 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1038 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1039                                    struct sk_buff *skb);
1040
1041 /* scan/BSS handling */
1042 void ieee80211_scan_work(struct work_struct *work);
1043 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1044                                     const u8 *ssid, u8 ssid_len,
1045                                     struct ieee80211_channel *chan);
1046 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1047                            struct cfg80211_scan_request *req);
1048 void ieee80211_scan_cancel(struct ieee80211_local *local);
1049 ieee80211_rx_result
1050 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1051
1052 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1053 struct ieee80211_bss *
1054 ieee80211_bss_info_update(struct ieee80211_local *local,
1055                           struct ieee80211_rx_status *rx_status,
1056                           struct ieee80211_mgmt *mgmt,
1057                           size_t len,
1058                           struct ieee802_11_elems *elems,
1059                           struct ieee80211_channel *channel,
1060                           bool beacon);
1061 struct ieee80211_bss *
1062 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1063                      u8 *ssid, u8 ssid_len);
1064 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1065                           struct ieee80211_bss *bss);
1066
1067 /* off-channel helpers */
1068 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
1069 void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
1070 void ieee80211_offchannel_return(struct ieee80211_local *local,
1071                                  bool enable_beaconing);
1072
1073 /* interface handling */
1074 int ieee80211_iface_init(void);
1075 void ieee80211_iface_exit(void);
1076 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1077                      struct net_device **new_dev, enum nl80211_iftype type,
1078                      struct vif_params *params);
1079 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1080                              enum nl80211_iftype type);
1081 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1082 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1083 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1084 void ieee80211_recalc_idle(struct ieee80211_local *local);
1085
1086 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1087 {
1088         return netif_running(sdata->dev);
1089 }
1090
1091 /* tx handling */
1092 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1093 void ieee80211_tx_pending(unsigned long data);
1094 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1095                                          struct net_device *dev);
1096 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1097                                        struct net_device *dev);
1098
1099 /*
1100  * radiotap header for status frames
1101  */
1102 struct ieee80211_tx_status_rtap_hdr {
1103         struct ieee80211_radiotap_header hdr;
1104         u8 rate;
1105         u8 padding_for_rate;
1106         __le16 tx_flags;
1107         u8 data_retries;
1108 } __packed;
1109
1110
1111 /* HT */
1112 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1113                                        struct ieee80211_ht_cap *ht_cap_ie,
1114                                        struct ieee80211_sta_ht_cap *ht_cap);
1115 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1116 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1117                           const u8 *da, u16 tid,
1118                           u16 initiator, u16 reason_code);
1119 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1120                                enum ieee80211_smps_mode smps, const u8 *da,
1121                                const u8 *bssid);
1122 void ieee80211_request_smps_work(struct work_struct *work);
1123
1124 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1125                                      u16 initiator, u16 reason);
1126 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1127                                     u16 initiator, u16 reason);
1128 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1129 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1130                              struct sta_info *sta,
1131                              struct ieee80211_mgmt *mgmt, size_t len);
1132 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1133                                   struct sta_info *sta,
1134                                   struct ieee80211_mgmt *mgmt,
1135                                   size_t len);
1136 void ieee80211_process_addba_request(struct ieee80211_local *local,
1137                                      struct sta_info *sta,
1138                                      struct ieee80211_mgmt *mgmt,
1139                                      size_t len);
1140
1141 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1142                                    enum ieee80211_back_parties initiator);
1143 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1144                                     enum ieee80211_back_parties initiator);
1145 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1146 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1147 void ieee80211_ba_session_work(struct work_struct *work);
1148 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1149 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1150
1151 /* Spectrum management */
1152 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1153                                        struct ieee80211_mgmt *mgmt,
1154                                        size_t len);
1155
1156 /* Suspend/resume and hw reconfiguration */
1157 int ieee80211_reconfig(struct ieee80211_local *local);
1158 void ieee80211_stop_device(struct ieee80211_local *local);
1159
1160 #ifdef CONFIG_PM
1161 int __ieee80211_suspend(struct ieee80211_hw *hw);
1162
1163 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1164 {
1165         return ieee80211_reconfig(hw_to_local(hw));
1166 }
1167 #else
1168 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1169 {
1170         return 0;
1171 }
1172
1173 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1174 {
1175         return 0;
1176 }
1177 #endif
1178
1179 /* utility functions/constants */
1180 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1181 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1182                         enum nl80211_iftype type);
1183 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1184                              int rate, int erp, int short_preamble);
1185 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1186                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1187                                      gfp_t gfp);
1188 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1189 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1190 void ieee802_11_parse_elems(u8 *start, size_t len,
1191                             struct ieee802_11_elems *elems);
1192 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1193                                struct ieee802_11_elems *elems,
1194                                u64 filter, u32 crc);
1195 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1196                               enum ieee80211_band band);
1197
1198 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1199 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1200 void ieee80211_dynamic_ps_timer(unsigned long data);
1201 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1202                              struct ieee80211_sub_if_data *sdata,
1203                              int powersave);
1204 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1205                              struct ieee80211_hdr *hdr);
1206 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1207
1208 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1209                                      enum queue_stop_reason reason);
1210 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1211                                      enum queue_stop_reason reason);
1212 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1213                                     enum queue_stop_reason reason);
1214 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1215                                     enum queue_stop_reason reason);
1216 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1217                                struct sk_buff *skb);
1218 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1219                                struct sk_buff_head *skbs);
1220
1221 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1222                          u16 transaction, u16 auth_alg,
1223                          u8 *extra, size_t extra_len, const u8 *bssid,
1224                          const u8 *key, u8 key_len, u8 key_idx);
1225 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1226                              const u8 *ie, size_t ie_len,
1227                              enum ieee80211_band band);
1228 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1229                               const u8 *ssid, size_t ssid_len,
1230                               const u8 *ie, size_t ie_len);
1231
1232 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1233                                   const size_t supp_rates_len,
1234                                   const u8 *supp_rates);
1235 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1236                             struct ieee802_11_elems *elems,
1237                             enum ieee80211_band band);
1238 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1239                              enum ieee80211_smps_mode smps_mode);
1240 void ieee80211_recalc_smps(struct ieee80211_local *local,
1241                            struct ieee80211_sub_if_data *forsdata);
1242
1243 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1244                           const u8 *ids, int n_ids, size_t offset);
1245 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1246
1247 /* internal work items */
1248 void ieee80211_work_init(struct ieee80211_local *local);
1249 void ieee80211_add_work(struct ieee80211_work *wk);
1250 void free_work(struct ieee80211_work *wk);
1251 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1252 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1253                                            struct sk_buff *skb);
1254 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1255                                    struct ieee80211_channel *chan,
1256                                    enum nl80211_channel_type channel_type,
1257                                    unsigned int duration, u64 *cookie);
1258 int ieee80211_wk_cancel_remain_on_channel(
1259         struct ieee80211_sub_if_data *sdata, u64 cookie);
1260
1261 /* channel management */
1262 enum ieee80211_chan_mode {
1263         CHAN_MODE_UNDEFINED,
1264         CHAN_MODE_HOPPING,
1265         CHAN_MODE_FIXED,
1266 };
1267
1268 enum ieee80211_chan_mode
1269 ieee80211_get_channel_mode(struct ieee80211_local *local,
1270                            struct ieee80211_sub_if_data *ignore);
1271 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1272                                 struct ieee80211_sub_if_data *sdata,
1273                                 enum nl80211_channel_type chantype);
1274
1275 #ifdef CONFIG_MAC80211_NOINLINE
1276 #define debug_noinline noinline
1277 #else
1278 #define debug_noinline
1279 #endif
1280
1281 #endif /* IEEE80211_I_H */