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 <linux/leds.h>
  27 #include <net/ieee80211_radiotap.h>
  28 #include <net/cfg80211.h>
  29 #include <net/mac80211.h>
  30 #include "key.h"
  31 #include "sta_info.h"
  32
  33 struct ieee80211_local;
  34
  35 /* Maximum number of broadcast/multicast frames to buffer when some of the
  36  * associated stations are using power saving. */
  37 #define AP_MAX_BC_BUFFER 128
  38
  39 /* Maximum number of frames buffered to all STAs, including multicast frames.
  40  * Note: increasing this limit increases the potential memory requirement. Each
  41  * frame can be up to about 2 kB long. */
  42 #define TOTAL_MAX_TX_BUFFER 512
  43
  44 /* Required encryption head and tailroom */
  45 #define IEEE80211_ENCRYPT_HEADROOM 8
  46 #define IEEE80211_ENCRYPT_TAILROOM 18
  47
  48 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  49  * reception of at least three fragmented frames. This limit can be increased
  50  * by changing this define, at the cost of slower frame reassembly and
  51  * increased memory use (about 2 kB of RAM per entry). */
  52 #define IEEE80211_FRAGMENT_MAX 4
  53
  54 #define TU_TO_EXP_TIME(x)       (jiffies + usecs_to_jiffies((x) * 1024))
  55
  56 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  57         (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK |   \
  58          IEEE80211_WMM_IE_STA_QOSINFO_AC_BE |   \
  59          IEEE80211_WMM_IE_STA_QOSINFO_AC_VI |   \
  60          IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
  61
  62 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  63         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  64
  65 struct ieee80211_fragment_entry {
  66         unsigned long first_frag_time;
  67         unsigned int seq;
  68         unsigned int rx_queue;
  69         unsigned int last_frag;
  70         unsigned int extra_len;
  71         struct sk_buff_head skb_list;
  72         int ccmp; /* Whether fragments were encrypted with CCMP */
  73         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  74 };
  75
  76
  77 struct ieee80211_bss {
  78         /* don't want to look up all the time */
  79         size_t ssid_len;
  80         u8 ssid[IEEE80211_MAX_SSID_LEN];
  81
  82         u8 dtim_period;
  83
  84         bool wmm_used;
  85         bool uapsd_supported;
  86
  87         unsigned long last_probe_resp;
  88
  89 #ifdef CONFIG_MAC80211_MESH
  90         u8 *mesh_id;
  91         size_t mesh_id_len;
  92         u8 *mesh_cfg;
  93 #endif
  94
  95 #define IEEE80211_MAX_SUPP_RATES 32
  96         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  97         size_t supp_rates_len;
  98
  99         /*
 100          * During assocation, we save an ERP value from a probe response so
 101          * that we can feed ERP info to the driver when handling the
 102          * association completes. these fields probably won't be up-to-date
 103          * otherwise, you probably don't want to use them.
 104          */
 105         bool has_erp_value;
 106         u8 erp_value;
 107 };
 108
 109 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 110 {
 111 #ifdef CONFIG_MAC80211_MESH
 112         return bss->mesh_cfg;
 113 #endif
 114         return NULL;
 115 }
 116
 117 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 118 {
 119 #ifdef CONFIG_MAC80211_MESH
 120         return bss->mesh_id;
 121 #endif
 122         return NULL;
 123 }
 124
 125 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 126 {
 127 #ifdef CONFIG_MAC80211_MESH
 128         return bss->mesh_id_len;
 129 #endif
 130         return 0;
 131 }
 132
 133
 134 typedef unsigned __bitwise__ ieee80211_tx_result;
 135 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 136 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 137 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 138
 139 #define IEEE80211_TX_FRAGMENTED         BIT(0)
 140 #define IEEE80211_TX_UNICAST            BIT(1)
 141 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 142
 143 struct ieee80211_tx_data {
 144         struct sk_buff *skb;
 145         struct ieee80211_local *local;
 146         struct ieee80211_sub_if_data *sdata;
 147         struct sta_info *sta;
 148         struct ieee80211_key *key;
 149
 150         struct ieee80211_channel *channel;
 151
 152         u16 ethertype;
 153         unsigned int flags;
 154 };
 155
 156
 157 typedef unsigned __bitwise__ ieee80211_rx_result;
 158 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 159 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 160 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 161 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 162
 163 /**
 164  * enum ieee80211_packet_rx_flags - packet RX flags
 165  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 166  *      (incl. multicast frames)
 167  * @IEEE80211_RX_IN_SCAN: received while scanning
 168  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 169  * @IEEE80211_RX_AMSDU: a-MSDU packet
 170  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 171  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 172  *
 173  * These are per-frame flags that are attached to a frame in the
 174  * @rx_flags field of &struct ieee80211_rx_status.
 175  */
 176 enum ieee80211_packet_rx_flags {
 177         IEEE80211_RX_IN_SCAN                    = BIT(0),
 178         IEEE80211_RX_RA_MATCH                   = BIT(1),
 179         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 180         IEEE80211_RX_AMSDU                      = BIT(3),
 181         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 182         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 183 };
 184
 185 /**
 186  * enum ieee80211_rx_flags - RX data flags
 187  *
 188  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 189  *
 190  * These flags are used across handling multiple interfaces
 191  * for a single frame.
 192  */
 193 enum ieee80211_rx_flags {
 194         IEEE80211_RX_CMNTR              = BIT(0),
 195 };
 196
 197 struct ieee80211_rx_data {
 198         struct sk_buff *skb;
 199         struct ieee80211_local *local;
 200         struct ieee80211_sub_if_data *sdata;
 201         struct sta_info *sta;
 202         struct ieee80211_key *key;
 203
 204         unsigned int flags;
 205         int queue;
 206         u32 tkip_iv32;
 207         u16 tkip_iv16;
 208 };
 209
 210 struct beacon_data {
 211         u8 *head, *tail;
 212         int head_len, tail_len;
 213         int dtim_period;
 214 };
 215
 216 struct ieee80211_if_ap {
 217         struct beacon_data *beacon;
 218
 219         struct list_head vlans;
 220
 221         /* yes, this looks ugly, but guarantees that we can later use
 222          * bitmap_empty :)
 223          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 224         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 225         struct sk_buff_head ps_bc_buf;
 226         atomic_t num_sta_ps; /* number of stations in PS mode */
 227         int dtim_count;
 228 };
 229
 230 struct ieee80211_if_wds {
 231         struct sta_info *sta;
 232         u8 remote_addr[ETH_ALEN];
 233 };
 234
 235 struct ieee80211_if_vlan {
 236         struct list_head list;
 237
 238         /* used for all tx if the VLAN is configured to 4-addr mode */
 239         struct sta_info *sta;
 240 };
 241
 242 struct mesh_stats {
 243         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 244         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 245         __u32 fwded_frames;             /* Mesh total forwarded frames */
 246         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 247         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 248         atomic_t estab_plinks;
 249 };
 250
 251 #define PREQ_Q_F_START          0x1
 252 #define PREQ_Q_F_REFRESH        0x2
 253 struct mesh_preq_queue {
 254         struct list_head list;
 255         u8 dst[ETH_ALEN];
 256         u8 flags;
 257 };
 258
 259 enum ieee80211_work_type {
 260         IEEE80211_WORK_ABORT,
 261         IEEE80211_WORK_DIRECT_PROBE,
 262         IEEE80211_WORK_AUTH,
 263         IEEE80211_WORK_ASSOC_BEACON_WAIT,
 264         IEEE80211_WORK_ASSOC,
 265         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 266         IEEE80211_WORK_OFFCHANNEL_TX,
 267 };
 268
 269 /**
 270  * enum work_done_result - indicates what to do after work was done
 271  *
 272  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 273  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 274  *      should be requeued.
 275  */
 276 enum work_done_result {
 277         WORK_DONE_DESTROY,
 278         WORK_DONE_REQUEUE,
 279 };
 280
 281 struct ieee80211_work {
 282         struct list_head list;
 283
 284         struct rcu_head rcu_head;
 285
 286         struct ieee80211_sub_if_data *sdata;
 287
 288         enum work_done_result (*done)(struct ieee80211_work *wk,
 289                                       struct sk_buff *skb);
 290
 291         struct ieee80211_channel *chan;
 292         enum nl80211_channel_type chan_type;
 293
 294         unsigned long timeout;
 295         enum ieee80211_work_type type;
 296
 297         u8 filter_ta[ETH_ALEN];
 298
 299         bool started;
 300
 301         union {
 302                 struct {
 303                         int tries;
 304                         u16 algorithm, transaction;
 305                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 306                         u8 ssid_len;
 307                         u8 key[WLAN_KEY_LEN_WEP104];
 308                         u8 key_len, key_idx;
 309                         bool privacy;
 310                 } probe_auth;
 311                 struct {
 312                         struct cfg80211_bss *bss;
 313                         const u8 *supp_rates;
 314                         const u8 *ht_information_ie;
 315                         enum ieee80211_smps_mode smps;
 316                         int tries;
 317                         u16 capability;
 318                         u8 prev_bssid[ETH_ALEN];
 319                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 320                         u8 ssid_len;
 321                         u8 supp_rates_len;
 322                         bool wmm_used, use_11n, uapsd_used;
 323                 } assoc;
 324                 struct {
 325                         u32 duration;
 326                 } remain;
 327                 struct {
 328                         struct sk_buff *frame;
 329                         u32 wait;
 330                 } offchan_tx;
 331         };
 332
 333         int ie_len;
 334         /* must be last */
 335         u8 ie[0];
 336 };
 337
 338 /* flags used in struct ieee80211_if_managed.flags */
 339 enum ieee80211_sta_flags {
 340         IEEE80211_STA_BEACON_POLL       = BIT(0),
 341         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 342         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 343         IEEE80211_STA_DISABLE_11N       = BIT(4),
 344         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 345         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 346         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 347         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 348         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 349 };
 350
 351 struct ieee80211_if_managed {
 352         struct timer_list timer;
 353         struct timer_list conn_mon_timer;
 354         struct timer_list bcn_mon_timer;
 355         struct timer_list chswitch_timer;
 356         struct work_struct monitor_work;
 357         struct work_struct chswitch_work;
 358         struct work_struct beacon_connection_loss_work;
 359
 360         unsigned long beacon_timeout;
 361         unsigned long probe_timeout;
 362         int probe_send_count;
 363         bool nullfunc_failed;
 364
 365         struct mutex mtx;
 366         struct cfg80211_bss *associated;
 367
 368         u8 bssid[ETH_ALEN];
 369
 370         u16 aid;
 371
 372         unsigned long timers_running; /* used for quiesce/restart */
 373         bool powersave; /* powersave requested for this iface */
 374         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 375                                  ap_smps, /* smps mode AP thinks we're in */
 376                                  driver_smps_mode; /* smps mode request */
 377
 378         struct work_struct request_smps_work;
 379
 380         unsigned int flags;
 381
 382         bool beacon_crc_valid;
 383         u32 beacon_crc;
 384
 385         enum {
 386                 IEEE80211_MFP_DISABLED,
 387                 IEEE80211_MFP_OPTIONAL,
 388                 IEEE80211_MFP_REQUIRED
 389         } mfp; /* management frame protection */
 390
 391         int wmm_last_param_set;
 392
 393         u8 use_4addr;
 394
 395         /* Signal strength from the last Beacon frame in the current BSS. */
 396         int last_beacon_signal;
 397
 398         /*
 399          * Weighted average of the signal strength from Beacon frames in the
 400          * current BSS. This is in units of 1/16 of the signal unit to maintain
 401          * accuracy and to speed up calculations, i.e., the value need to be
 402          * divided by 16 to get the actual value.
 403          */
 404         int ave_beacon_signal;
 405
 406         /*
 407          * Number of Beacon frames used in ave_beacon_signal. This can be used
 408          * to avoid generating less reliable cqm events that would be based
 409          * only on couple of received frames.
 410          */
 411         unsigned int count_beacon_signal;
 412
 413         /*
 414          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 415          * that triggered a cqm event. 0 indicates that no event has been
 416          * generated for the current association.
 417          */
 418         int last_cqm_event_signal;
 419 };
 420
 421 struct ieee80211_if_ibss {
 422         struct timer_list timer;
 423
 424         struct mutex mtx;
 425
 426         unsigned long last_scan_completed;
 427
 428         u32 basic_rates;
 429
 430         bool timer_running;
 431
 432         bool fixed_bssid;
 433         bool fixed_channel;
 434         bool privacy;
 435
 436         u8 bssid[ETH_ALEN];
 437         u8 ssid[IEEE80211_MAX_SSID_LEN];
 438         u8 ssid_len, ie_len;
 439         u8 *ie;
 440         struct ieee80211_channel *channel;
 441
 442         unsigned long ibss_join_req;
 443         /* probe response/beacon for IBSS */
 444         struct sk_buff *presp, *skb;
 445
 446         enum {
 447                 IEEE80211_IBSS_MLME_SEARCH,
 448                 IEEE80211_IBSS_MLME_JOINED,
 449         } state;
 450 };
 451
 452 struct ieee80211_if_mesh {
 453         struct timer_list housekeeping_timer;
 454         struct timer_list mesh_path_timer;
 455         struct timer_list mesh_path_root_timer;
 456
 457         unsigned long timers_running;
 458
 459         unsigned long wrkq_flags;
 460
 461         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 462         size_t mesh_id_len;
 463         /* Active Path Selection Protocol Identifier */
 464         u8 mesh_pp_id;
 465         /* Active Path Selection Metric Identifier */
 466         u8 mesh_pm_id;
 467         /* Congestion Control Mode Identifier */
 468         u8 mesh_cc_id;
 469         /* Synchronization Protocol Identifier */
 470         u8 mesh_sp_id;
 471         /* Authentication Protocol Identifier */
 472         u8 mesh_auth_id;
 473         /* Local mesh Sequence Number */
 474         u32 sn;
 475         /* Last used PREQ ID */
 476         u32 preq_id;
 477         atomic_t mpaths;
 478         /* Timestamp of last SN update */
 479         unsigned long last_sn_update;
 480         /* Timestamp of last SN sent */
 481         unsigned long last_preq;
 482         struct mesh_rmc *rmc;
 483         spinlock_t mesh_preq_queue_lock;
 484         struct mesh_preq_queue preq_queue;
 485         int preq_queue_len;
 486         struct mesh_stats mshstats;
 487         struct mesh_config mshcfg;
 488         u32 mesh_seqnum;
 489         bool accepting_plinks;
 490         const u8 *vendor_ie;
 491         u8 vendor_ie_len;
 492 };
 493
 494 #ifdef CONFIG_MAC80211_MESH
 495 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 496         do { (msh)->mshstats.name++; } while (0)
 497 #else
 498 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 499         do { } while (0)
 500 #endif
 501
 502 /**
 503  * enum ieee80211_sub_if_data_flags - virtual interface flags
 504  *
 505  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 506  * @IEEE80211_SDATA_PROMISC: interface is promisc
 507  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 508  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 509  *      associated stations and deliver multicast frames both
 510  *      back to wireless media and to the local net stack.
 511  */
 512 enum ieee80211_sub_if_data_flags {
 513         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 514         IEEE80211_SDATA_PROMISC                 = BIT(1),
 515         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 516         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 517 };
 518
 519 /**
 520  * enum ieee80211_sdata_state_bits - virtual interface state bits
 521  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 522  *      mirrors netif_running() but is separate for interface type
 523  *      change handling while the interface is up
 524  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 525  *      mode, so queues are stopped
 526  */
 527 enum ieee80211_sdata_state_bits {
 528         SDATA_STATE_RUNNING,
 529         SDATA_STATE_OFFCHANNEL,
 530 };
 531
 532 struct ieee80211_sub_if_data {
 533         struct list_head list;
 534
 535         struct wireless_dev wdev;
 536
 537         /* keys */
 538         struct list_head key_list;
 539
 540         struct net_device *dev;
 541         struct ieee80211_local *local;
 542
 543         unsigned int flags;
 544
 545         unsigned long state;
 546
 547         int drop_unencrypted;
 548
 549         char name[IFNAMSIZ];
 550
 551         /*
 552          * keep track of whether the HT opmode (stored in
 553          * vif.bss_info.ht_operation_mode) is valid.
 554          */
 555         bool ht_opmode_valid;
 556
 557         /* to detect idle changes */
 558         bool old_idle;
 559
 560         /* Fragment table for host-based reassembly */
 561         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 562         unsigned int fragment_next;
 563
 564         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 565         struct ieee80211_key *default_unicast_key, *default_multicast_key;
 566         struct ieee80211_key *default_mgmt_key;
 567
 568         u16 sequence_number;
 569         __be16 control_port_protocol;
 570         bool control_port_no_encrypt;
 571
 572         struct work_struct work;
 573         struct sk_buff_head skb_queue;
 574
 575         bool arp_filter_state;
 576
 577         /*
 578          * AP this belongs to: self in AP mode and
 579          * corresponding AP in VLAN mode, NULL for
 580          * all others (might be needed later in IBSS)
 581          */
 582         struct ieee80211_if_ap *bss;
 583
 584         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 585         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 586
 587         union {
 588                 struct ieee80211_if_ap ap;
 589                 struct ieee80211_if_wds wds;
 590                 struct ieee80211_if_vlan vlan;
 591                 struct ieee80211_if_managed mgd;
 592                 struct ieee80211_if_ibss ibss;
 593                 struct ieee80211_if_mesh mesh;
 594                 u32 mntr_flags;
 595         } u;
 596
 597 #ifdef CONFIG_MAC80211_DEBUGFS
 598         struct {
 599                 struct dentry *dir;
 600                 struct dentry *subdir_stations;
 601                 struct dentry *default_unicast_key;
 602                 struct dentry *default_multicast_key;
 603                 struct dentry *default_mgmt_key;
 604         } debugfs;
 605 #endif
 606         /* must be last, dynamically sized area in this! */
 607         struct ieee80211_vif vif;
 608 };
 609
 610 static inline
 611 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 612 {
 613         return container_of(p, struct ieee80211_sub_if_data, vif);
 614 }
 615
 616 enum sdata_queue_type {
 617         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 618         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 619         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 620 };
 621
 622 enum {
 623         IEEE80211_RX_MSG        = 1,
 624         IEEE80211_TX_STATUS_MSG = 2,
 625 };
 626
 627 enum queue_stop_reason {
 628         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 629         IEEE80211_QUEUE_STOP_REASON_PS,
 630         IEEE80211_QUEUE_STOP_REASON_CSA,
 631         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 632         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 633         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 634 };
 635
 636 #ifdef CONFIG_MAC80211_LEDS
 637 struct tpt_led_trigger {
 638         struct led_trigger trig;
 639         char name[32];
 640         const struct ieee80211_tpt_blink *blink_table;
 641         unsigned int blink_table_len;
 642         struct timer_list timer;
 643         unsigned long prev_traffic;
 644         unsigned long tx_bytes, rx_bytes;
 645         unsigned int active, want;
 646         bool running;
 647 };
 648 #endif
 649
 650 /**
 651  * mac80211 scan flags - currently active scan mode
 652  *
 653  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 654  *      well be on the operating channel
 655  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 656  *      determine if we are on the operating channel or not
 657  * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
 658  *      gets only set in conjunction with SCAN_SW_SCANNING
 659  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 660  *      that the scan completed.
 661  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 662  *      a scan complete for an aborted scan.
 663  */
 664 enum {
 665         SCAN_SW_SCANNING,
 666         SCAN_HW_SCANNING,
 667         SCAN_OFF_CHANNEL,
 668         SCAN_COMPLETED,
 669         SCAN_ABORTED,
 670 };
 671
 672 /**
 673  * enum mac80211_scan_state - scan state machine states
 674  *
 675  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 676  *      determines if we should keep on scanning or switch back to the
 677  *      operating channel
 678  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 679  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 680  * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 681  *      about us leaving the channel and stop all associated STA interfaces
 682  * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 683  *      AP about us being back and restart all associated STA interfaces
 684  */
 685 enum mac80211_scan_state {
 686         SCAN_DECISION,
 687         SCAN_SET_CHANNEL,
 688         SCAN_SEND_PROBE,
 689         SCAN_LEAVE_OPER_CHANNEL,
 690         SCAN_ENTER_OPER_CHANNEL,
 691 };
 692
 693 struct ieee80211_local {
 694         /* embed the driver visible part.
 695          * don't cast (use the static inlines below), but we keep
 696          * it first anyway so they become a no-op */
 697         struct ieee80211_hw hw;
 698
 699         const struct ieee80211_ops *ops;
 700
 701         /*
 702          * work stuff, potentially off-channel (in the future)
 703          */
 704         struct list_head work_list;
 705         struct timer_list work_timer;
 706         struct work_struct work_work;
 707         struct sk_buff_head work_skb_queue;
 708
 709         /*
 710          * private workqueue to mac80211. mac80211 makes this accessible
 711          * via ieee80211_queue_work()
 712          */
 713         struct workqueue_struct *workqueue;
 714
 715         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 716         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 717         spinlock_t queue_stop_reason_lock;
 718
 719         int open_count;
 720         int monitors, cooked_mntrs;
 721         /* number of interfaces with corresponding FIF_ flags */
 722         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 723             fif_probe_req;
 724         int probe_req_reg;
 725         unsigned int filter_flags; /* FIF_* */
 726
 727         bool wiphy_ciphers_allocated;
 728
 729         /* protects the aggregated multicast list and filter calls */
 730         spinlock_t filter_lock;
 731
 732         /* used for uploading changed mc list */
 733         struct work_struct reconfig_filter;
 734
 735         /* used to reconfigure hardware SM PS */
 736         struct work_struct recalc_smps;
 737
 738         /* aggregated multicast list */
 739         struct netdev_hw_addr_list mc_list;
 740
 741         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 742
 743         /*
 744          * suspended is true if we finished all the suspend _and_ we have
 745          * not yet come up from resume. This is to be used by mac80211
 746          * to ensure driver sanity during suspend and mac80211's own
 747          * sanity. It can eventually be used for WoW as well.
 748          */
 749         bool suspended;
 750
 751         /*
 752          * Resuming is true while suspended, but when we're reprogramming the
 753          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 754          * again even though some other parts of the stack are still suspended
 755          * and we still drop received frames to avoid waking the stack.
 756          */
 757         bool resuming;
 758
 759         /*
 760          * quiescing is true during the suspend process _only_ to
 761          * ease timer cancelling etc.
 762          */
 763         bool quiescing;
 764
 765         /* device is started */
 766         bool started;
 767
 768         int tx_headroom; /* required headroom for hardware/radiotap */
 769
 770         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 771          * added to skb_queue will be processed, but frames in
 772          * skb_queue_unreliable may be dropped if the total length of these
 773          * queues increases over the limit. */
 774 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 775         struct tasklet_struct tasklet;
 776         struct sk_buff_head skb_queue;
 777         struct sk_buff_head skb_queue_unreliable;
 778
 779         /*
 780          * Internal FIFO queue which is shared between multiple rx path
 781          * stages. Its main task is to provide a serialization mechanism,
 782          * so all rx handlers can enjoy having exclusive access to their
 783          * private data structures.
 784          */
 785         struct sk_buff_head rx_skb_queue;
 786         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 787
 788         /* Station data */
 789         /*
 790          * The mutex only protects the list and counter,
 791          * reads are done in RCU.
 792          * Additionally, the lock protects the hash table,
 793          * the pending list and each BSS's TIM bitmap.
 794          */
 795         struct mutex sta_mtx;
 796         spinlock_t sta_lock;
 797         unsigned long num_sta;
 798         struct list_head sta_list, sta_pending_list;
 799         struct sta_info *sta_hash[STA_HASH_SIZE];
 800         struct timer_list sta_cleanup;
 801         struct work_struct sta_finish_work;
 802         int sta_generation;
 803
 804         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 805         struct tasklet_struct tx_pending_tasklet;
 806
 807         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 808
 809         /* number of interfaces with corresponding IFF_ flags */
 810         atomic_t iff_allmultis, iff_promiscs;
 811
 812         struct rate_control_ref *rate_ctrl;
 813
 814         struct crypto_blkcipher *wep_tx_tfm;
 815         struct crypto_blkcipher *wep_rx_tfm;
 816         u32 wep_iv;
 817
 818         /* see iface.c */
 819         struct list_head interfaces;
 820         struct mutex iflist_mtx;
 821
 822         /*
 823          * Key mutex, protects sdata's key_list and sta_info's
 824          * key pointers (write access, they're RCU.)
 825          */
 826         struct mutex key_mtx;
 827
 828         /* mutex for scan and work locking */
 829         struct mutex mtx;
 830
 831         /* Scanning and BSS list */
 832         unsigned long scanning;
 833         struct cfg80211_ssid scan_ssid;
 834         struct cfg80211_scan_request *int_scan_req;
 835         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 836         struct ieee80211_channel *scan_channel;
 837         enum ieee80211_band hw_scan_band;
 838         int scan_channel_idx;
 839         int scan_ies_len;
 840
 841         unsigned long leave_oper_channel_time;
 842         enum mac80211_scan_state next_scan_state;
 843         struct delayed_work scan_work;
 844         struct ieee80211_sub_if_data *scan_sdata;
 845         enum nl80211_channel_type _oper_channel_type;
 846         struct ieee80211_channel *oper_channel, *csa_channel;
 847
 848         /* Temporary remain-on-channel for off-channel operations */
 849         struct ieee80211_channel *tmp_channel;
 850         enum nl80211_channel_type tmp_channel_type;
 851
 852         /* SNMP counters */
 853         /* dot11CountersTable */
 854         u32 dot11TransmittedFragmentCount;
 855         u32 dot11MulticastTransmittedFrameCount;
 856         u32 dot11FailedCount;
 857         u32 dot11RetryCount;
 858         u32 dot11MultipleRetryCount;
 859         u32 dot11FrameDuplicateCount;
 860         u32 dot11ReceivedFragmentCount;
 861         u32 dot11MulticastReceivedFrameCount;
 862         u32 dot11TransmittedFrameCount;
 863
 864 #ifdef CONFIG_MAC80211_LEDS
 865         int tx_led_counter, rx_led_counter;
 866         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 867         struct tpt_led_trigger *tpt_led_trigger;
 868         char tx_led_name[32], rx_led_name[32],
 869              assoc_led_name[32], radio_led_name[32];
 870 #endif
 871
 872 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 873         /* TX/RX handler statistics */
 874         unsigned int tx_handlers_drop;
 875         unsigned int tx_handlers_queued;
 876         unsigned int tx_handlers_drop_unencrypted;
 877         unsigned int tx_handlers_drop_fragment;
 878         unsigned int tx_handlers_drop_wep;
 879         unsigned int tx_handlers_drop_not_assoc;
 880         unsigned int tx_handlers_drop_unauth_port;
 881         unsigned int rx_handlers_drop;
 882         unsigned int rx_handlers_queued;
 883         unsigned int rx_handlers_drop_nullfunc;
 884         unsigned int rx_handlers_drop_defrag;
 885         unsigned int rx_handlers_drop_short;
 886         unsigned int rx_handlers_drop_passive_scan;
 887         unsigned int tx_expand_skb_head;
 888         unsigned int tx_expand_skb_head_cloned;
 889         unsigned int rx_expand_skb_head;
 890         unsigned int rx_expand_skb_head2;
 891         unsigned int rx_handlers_fragments;
 892         unsigned int tx_status_drop;
 893 #define I802_DEBUG_INC(c) (c)++
 894 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 895 #define I802_DEBUG_INC(c) do { } while (0)
 896 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 897
 898
 899         int total_ps_buffered; /* total number of all buffered unicast and
 900                                 * multicast packets for power saving stations
 901                                 */
 902         int wifi_wme_noack_test;
 903         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 904
 905         /*
 906          * Bitmask of enabled u-apsd queues,
 907          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 908          * to take effect.
 909          */
 910         unsigned int uapsd_queues;
 911
 912         /*
 913          * Maximum number of buffered frames AP can deliver during a
 914          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 915          * Needs a new association to take effect.
 916          */
 917         unsigned int uapsd_max_sp_len;
 918
 919         bool pspolling;
 920         bool offchannel_ps_enabled;
 921         /*
 922          * PS can only be enabled when we have exactly one managed
 923          * interface (and monitors) in PS, this then points there.
 924          */
 925         struct ieee80211_sub_if_data *ps_sdata;
 926         struct work_struct dynamic_ps_enable_work;
 927         struct work_struct dynamic_ps_disable_work;
 928         struct timer_list dynamic_ps_timer;
 929         struct notifier_block network_latency_notifier;
 930         struct notifier_block ifa_notifier;
 931
 932         /*
 933          * The dynamic ps timeout configured from user space via WEXT -
 934          * this will override whatever chosen by mac80211 internally.
 935          */
 936         int dynamic_ps_forced_timeout;
 937         int dynamic_ps_user_timeout;
 938         bool disable_dynamic_ps;
 939
 940         int user_power_level; /* in dBm */
 941         int power_constr_level; /* in dBm */
 942
 943         enum ieee80211_smps_mode smps_mode;
 944
 945         struct work_struct restart_work;
 946
 947 #ifdef CONFIG_MAC80211_DEBUGFS
 948         struct local_debugfsdentries {
 949                 struct dentry *rcdir;
 950                 struct dentry *keys;
 951         } debugfs;
 952 #endif
 953
 954         struct ieee80211_channel *hw_roc_channel;
 955         struct net_device *hw_roc_dev;
 956         struct sk_buff *hw_roc_skb;
 957         struct work_struct hw_roc_start, hw_roc_done;
 958         enum nl80211_channel_type hw_roc_channel_type;
 959         unsigned int hw_roc_duration;
 960         u32 hw_roc_cookie;
 961         bool hw_roc_for_tx;
 962
 963         /* dummy netdev for use w/ NAPI */
 964         struct net_device napi_dev;
 965
 966         struct napi_struct napi;
 967 };
 968
 969 static inline struct ieee80211_sub_if_data *
 970 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 971 {
 972         return netdev_priv(dev);
 973 }
 974
 975 /* this struct represents 802.11n's RA/TID combination */
 976 struct ieee80211_ra_tid {
 977         u8 ra[ETH_ALEN];
 978         u16 tid;
 979 };
 980
 981 /* Parsed Information Elements */
 982 struct ieee802_11_elems {
 983         u8 *ie_start;
 984         size_t total_len;
 985
 986         /* pointers to IEs */
 987         u8 *ssid;
 988         u8 *supp_rates;
 989         u8 *fh_params;
 990         u8 *ds_params;
 991         u8 *cf_params;
 992         struct ieee80211_tim_ie *tim;
 993         u8 *ibss_params;
 994         u8 *challenge;
 995         u8 *wpa;
 996         u8 *rsn;
 997         u8 *erp_info;
 998         u8 *ext_supp_rates;
 999         u8 *wmm_info;
1000         u8 *wmm_param;
1001         struct ieee80211_ht_cap *ht_cap_elem;
1002         struct ieee80211_ht_info *ht_info_elem;
1003         struct ieee80211_meshconf_ie *mesh_config;
1004         u8 *mesh_id;
1005         u8 *peer_link;
1006         u8 *preq;
1007         u8 *prep;
1008         u8 *perr;
1009         struct ieee80211_rann_ie *rann;
1010         u8 *ch_switch_elem;
1011         u8 *country_elem;
1012         u8 *pwr_constr_elem;
1013         u8 *quiet_elem;         /* first quite element */
1014         u8 *timeout_int;
1015
1016         /* length of them, respectively */
1017         u8 ssid_len;
1018         u8 supp_rates_len;
1019         u8 fh_params_len;
1020         u8 ds_params_len;
1021         u8 cf_params_len;
1022         u8 tim_len;
1023         u8 ibss_params_len;
1024         u8 challenge_len;
1025         u8 wpa_len;
1026         u8 rsn_len;
1027         u8 erp_info_len;
1028         u8 ext_supp_rates_len;
1029         u8 wmm_info_len;
1030         u8 wmm_param_len;
1031         u8 mesh_id_len;
1032         u8 peer_link_len;
1033         u8 preq_len;
1034         u8 prep_len;
1035         u8 perr_len;
1036         u8 ch_switch_elem_len;
1037         u8 country_elem_len;
1038         u8 pwr_constr_elem_len;
1039         u8 quiet_elem_len;
1040         u8 num_of_quiet_elem;   /* can be more the one */
1041         u8 timeout_int_len;
1042 };
1043
1044 static inline struct ieee80211_local *hw_to_local(
1045         struct ieee80211_hw *hw)
1046 {
1047         return container_of(hw, struct ieee80211_local, hw);
1048 }
1049
1050 static inline struct ieee80211_hw *local_to_hw(
1051         struct ieee80211_local *local)
1052 {
1053         return &local->hw;
1054 }
1055
1056
1057 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1058 {
1059         return compare_ether_addr(raddr, addr) == 0 ||
1060                is_broadcast_ether_addr(raddr);
1061 }
1062
1063
1064 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1065 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1066 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1067                                       u32 changed);
1068 void ieee80211_configure_filter(struct ieee80211_local *local);
1069 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1070
1071 extern bool ieee80211_disable_40mhz_24ghz;
1072
1073 /* STA code */
1074 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1075 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1076                        struct cfg80211_auth_request *req);
1077 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1078                         struct cfg80211_assoc_request *req);
1079 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1080                          struct cfg80211_deauth_request *req,
1081                          void *cookie);
1082 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1083                            struct cfg80211_disassoc_request *req,
1084                            void *cookie);
1085 void ieee80211_send_pspoll(struct ieee80211_local *local,
1086                            struct ieee80211_sub_if_data *sdata);
1087 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1088 int ieee80211_max_network_latency(struct notifier_block *nb,
1089                                   unsigned long data, void *dummy);
1090 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1091 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1092                                       struct ieee80211_channel_sw_ie *sw_elem,
1093                                       struct ieee80211_bss *bss,
1094                                       u64 timestamp);
1095 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1096 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1097 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1098 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1099                                   struct sk_buff *skb);
1100 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1101 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1102
1103 /* IBSS code */
1104 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1105 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1106 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1107                                         u8 *bssid, u8 *addr, u32 supp_rates,
1108                                         gfp_t gfp);
1109 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1110                         struct cfg80211_ibss_params *params);
1111 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1112 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1113 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1114 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1115 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1116                                    struct sk_buff *skb);
1117
1118 /* mesh code */
1119 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1120 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1121                                    struct sk_buff *skb);
1122
1123 /* scan/BSS handling */
1124 void ieee80211_scan_work(struct work_struct *work);
1125 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1126                                     const u8 *ssid, u8 ssid_len,
1127                                     struct ieee80211_channel *chan);
1128 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1129                            struct cfg80211_scan_request *req);
1130 void ieee80211_scan_cancel(struct ieee80211_local *local);
1131 ieee80211_rx_result
1132 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1133
1134 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1135 struct ieee80211_bss *
1136 ieee80211_bss_info_update(struct ieee80211_local *local,
1137                           struct ieee80211_rx_status *rx_status,
1138                           struct ieee80211_mgmt *mgmt,
1139                           size_t len,
1140                           struct ieee802_11_elems *elems,
1141                           struct ieee80211_channel *channel,
1142                           bool beacon);
1143 struct ieee80211_bss *
1144 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1145                      u8 *ssid, u8 ssid_len);
1146 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1147                           struct ieee80211_bss *bss);
1148
1149 /* off-channel helpers */
1150 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
1151 void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
1152 void ieee80211_offchannel_return(struct ieee80211_local *local,
1153                                  bool enable_beaconing);
1154 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1155
1156 /* interface handling */
1157 int ieee80211_iface_init(void);
1158 void ieee80211_iface_exit(void);
1159 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1160                      struct net_device **new_dev, enum nl80211_iftype type,
1161                      struct vif_params *params);
1162 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1163                              enum nl80211_iftype type);
1164 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1165 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1166 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1167 void ieee80211_recalc_idle(struct ieee80211_local *local);
1168 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1169                                     const int offset);
1170
1171 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1172 {
1173         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1174 }
1175
1176 /* tx handling */
1177 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1178 void ieee80211_tx_pending(unsigned long data);
1179 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1180                                          struct net_device *dev);
1181 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1182                                        struct net_device *dev);
1183
1184 /*
1185  * radiotap header for status frames
1186  */
1187 struct ieee80211_tx_status_rtap_hdr {
1188         struct ieee80211_radiotap_header hdr;
1189         u8 rate;
1190         u8 padding_for_rate;
1191         __le16 tx_flags;
1192         u8 data_retries;
1193 } __packed;
1194
1195
1196 /* HT */
1197 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1198                                        struct ieee80211_ht_cap *ht_cap_ie,
1199                                        struct ieee80211_sta_ht_cap *ht_cap);
1200 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1201 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1202                           const u8 *da, u16 tid,
1203                           u16 initiator, u16 reason_code);
1204 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1205                                enum ieee80211_smps_mode smps, const u8 *da,
1206                                const u8 *bssid);
1207 void ieee80211_request_smps_work(struct work_struct *work);
1208
1209 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1210                                      u16 initiator, u16 reason, bool stop);
1211 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1212                                     u16 initiator, u16 reason, bool stop);
1213 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1214 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1215                              struct sta_info *sta,
1216                              struct ieee80211_mgmt *mgmt, size_t len);
1217 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1218                                   struct sta_info *sta,
1219                                   struct ieee80211_mgmt *mgmt,
1220                                   size_t len);
1221 void ieee80211_process_addba_request(struct ieee80211_local *local,
1222                                      struct sta_info *sta,
1223                                      struct ieee80211_mgmt *mgmt,
1224                                      size_t len);
1225
1226 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1227                                    enum ieee80211_back_parties initiator,
1228                                    bool tx);
1229 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1230                                     enum ieee80211_back_parties initiator,
1231                                     bool tx);
1232 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1233 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1234 void ieee80211_ba_session_work(struct work_struct *work);
1235 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1236 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1237
1238 /* Spectrum management */
1239 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1240                                        struct ieee80211_mgmt *mgmt,
1241                                        size_t len);
1242
1243 /* Suspend/resume and hw reconfiguration */
1244 int ieee80211_reconfig(struct ieee80211_local *local);
1245 void ieee80211_stop_device(struct ieee80211_local *local);
1246
1247 #ifdef CONFIG_PM
1248 int __ieee80211_suspend(struct ieee80211_hw *hw);
1249
1250 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1251 {
1252         struct ieee80211_local *local = hw_to_local(hw);
1253
1254         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1255                 "%s: resume with hardware scan still in progress\n",
1256                 wiphy_name(hw->wiphy));
1257
1258         return ieee80211_reconfig(hw_to_local(hw));
1259 }
1260 #else
1261 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1262 {
1263         return 0;
1264 }
1265
1266 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1267 {
1268         return 0;
1269 }
1270 #endif
1271
1272 /* utility functions/constants */
1273 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1274 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1275                         enum nl80211_iftype type);
1276 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1277                              int rate, int erp, int short_preamble);
1278 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1279                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1280                                      gfp_t gfp);
1281 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1282 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1283 void ieee802_11_parse_elems(u8 *start, size_t len,
1284                             struct ieee802_11_elems *elems);
1285 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1286                                struct ieee802_11_elems *elems,
1287                                u64 filter, u32 crc);
1288 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1289                               enum ieee80211_band band);
1290
1291 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1292 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1293 void ieee80211_dynamic_ps_timer(unsigned long data);
1294 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1295                              struct ieee80211_sub_if_data *sdata,
1296                              int powersave);
1297 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1298                              struct ieee80211_hdr *hdr);
1299 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1300                              struct ieee80211_hdr *hdr, bool ack);
1301 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1302
1303 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1304                                      enum queue_stop_reason reason);
1305 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1306                                      enum queue_stop_reason reason);
1307 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1308                                     enum queue_stop_reason reason);
1309 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1310                                     enum queue_stop_reason reason);
1311 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1312                                struct sk_buff *skb);
1313 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1314                                struct sk_buff_head *skbs);
1315 int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1316                                   struct sk_buff_head *skbs,
1317                                   void (*fn)(void *data), void *data);
1318
1319 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1320                          u16 transaction, u16 auth_alg,
1321                          u8 *extra, size_t extra_len, const u8 *bssid,
1322                          const u8 *key, u8 key_len, u8 key_idx);
1323 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1324                              const u8 *ie, size_t ie_len,
1325                              enum ieee80211_band band, u32 rate_mask,
1326                              u8 channel);
1327 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1328                                           u8 *dst,
1329                                           const u8 *ssid, size_t ssid_len,
1330                                           const u8 *ie, size_t ie_len);
1331 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1332                               const u8 *ssid, size_t ssid_len,
1333                               const u8 *ie, size_t ie_len);
1334
1335 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1336                                   const size_t supp_rates_len,
1337                                   const u8 *supp_rates);
1338 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1339                             struct ieee802_11_elems *elems,
1340                             enum ieee80211_band band);
1341 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1342                              enum ieee80211_smps_mode smps_mode);
1343 void ieee80211_recalc_smps(struct ieee80211_local *local);
1344
1345 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1346                           const u8 *ids, int n_ids, size_t offset);
1347 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1348
1349 /* internal work items */
1350 void ieee80211_work_init(struct ieee80211_local *local);
1351 void ieee80211_add_work(struct ieee80211_work *wk);
1352 void free_work(struct ieee80211_work *wk);
1353 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1354 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1355                                            struct sk_buff *skb);
1356 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1357                                    struct ieee80211_channel *chan,
1358                                    enum nl80211_channel_type channel_type,
1359                                    unsigned int duration, u64 *cookie);
1360 int ieee80211_wk_cancel_remain_on_channel(
1361         struct ieee80211_sub_if_data *sdata, u64 cookie);
1362
1363 /* channel management */
1364 enum ieee80211_chan_mode {
1365         CHAN_MODE_UNDEFINED,
1366         CHAN_MODE_HOPPING,
1367         CHAN_MODE_FIXED,
1368 };
1369
1370 enum ieee80211_chan_mode
1371 ieee80211_get_channel_mode(struct ieee80211_local *local,
1372                            struct ieee80211_sub_if_data *ignore);
1373 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1374                                 struct ieee80211_sub_if_data *sdata,
1375                                 enum nl80211_channel_type chantype);
1376
1377 #ifdef CONFIG_MAC80211_NOINLINE
1378 #define debug_noinline noinline
1379 #else
1380 #define debug_noinline
1381 #endif
1382
1383 #endif /* IEEE80211_I_H */