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 <linux/idr.h>
  28 #include <net/ieee80211_radiotap.h>
  29 #include <net/cfg80211.h>
  30 #include <net/mac80211.h>
  31 #include "key.h"
  32 #include "sta_info.h"
  33
  34 struct ieee80211_local;
  35
  36 /* Maximum number of broadcast/multicast frames to buffer when some of the
  37  * associated stations are using power saving. */
  38 #define AP_MAX_BC_BUFFER 128
  39
  40 /* Maximum number of frames buffered to all STAs, including multicast frames.
  41  * Note: increasing this limit increases the potential memory requirement. Each
  42  * frame can be up to about 2 kB long. */
  43 #define TOTAL_MAX_TX_BUFFER 512
  44
  45 /* Required encryption head and tailroom */
  46 #define IEEE80211_ENCRYPT_HEADROOM 8
  47 #define IEEE80211_ENCRYPT_TAILROOM 18
  48
  49 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  50  * reception of at least three fragmented frames. This limit can be increased
  51  * by changing this define, at the cost of slower frame reassembly and
  52  * increased memory use (about 2 kB of RAM per entry). */
  53 #define IEEE80211_FRAGMENT_MAX 4
  54
  55 #define TU_TO_EXP_TIME(x)       (jiffies + usecs_to_jiffies((x) * 1024))
  56
  57 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  58         (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK |   \
  59          IEEE80211_WMM_IE_STA_QOSINFO_AC_BE |   \
  60          IEEE80211_WMM_IE_STA_QOSINFO_AC_VI |   \
  61          IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
  62
  63 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  64         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  65
  66 struct ieee80211_fragment_entry {
  67         unsigned long first_frag_time;
  68         unsigned int seq;
  69         unsigned int rx_queue;
  70         unsigned int last_frag;
  71         unsigned int extra_len;
  72         struct sk_buff_head skb_list;
  73         int ccmp; /* Whether fragments were encrypted with CCMP */
  74         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  75 };
  76
  77
  78 struct ieee80211_bss {
  79         /* don't want to look up all the time */
  80         size_t ssid_len;
  81         u8 ssid[IEEE80211_MAX_SSID_LEN];
  82
  83         u8 dtim_period;
  84
  85         bool wmm_used;
  86         bool uapsd_supported;
  87
  88         unsigned long last_probe_resp;
  89
  90 #ifdef CONFIG_MAC80211_MESH
  91         u8 *mesh_id;
  92         size_t mesh_id_len;
  93         u8 *mesh_cfg;
  94 #endif
  95
  96 #define IEEE80211_MAX_SUPP_RATES 32
  97         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  98         size_t supp_rates_len;
  99
 100         /*
 101          * During association, we save an ERP value from a probe response so
 102          * that we can feed ERP info to the driver when handling the
 103          * association completes. these fields probably won't be up-to-date
 104          * otherwise, you probably don't want to use them.
 105          */
 106         bool has_erp_value;
 107         u8 erp_value;
 108 };
 109
 110 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 111 {
 112 #ifdef CONFIG_MAC80211_MESH
 113         return bss->mesh_cfg;
 114 #endif
 115         return NULL;
 116 }
 117
 118 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 119 {
 120 #ifdef CONFIG_MAC80211_MESH
 121         return bss->mesh_id;
 122 #endif
 123         return NULL;
 124 }
 125
 126 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 127 {
 128 #ifdef CONFIG_MAC80211_MESH
 129         return bss->mesh_id_len;
 130 #endif
 131         return 0;
 132 }
 133
 134
 135 typedef unsigned __bitwise__ ieee80211_tx_result;
 136 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 137 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 138 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 139
 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 sk_buff_head skbs;
 146         struct ieee80211_local *local;
 147         struct ieee80211_sub_if_data *sdata;
 148         struct sta_info *sta;
 149         struct ieee80211_key *key;
 150
 151         struct ieee80211_channel *channel;
 152
 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  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 190  *      to cfg80211_report_obss_beacon().
 191  *
 192  * These flags are used across handling multiple interfaces
 193  * for a single frame.
 194  */
 195 enum ieee80211_rx_flags {
 196         IEEE80211_RX_CMNTR              = BIT(0),
 197         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 198 };
 199
 200 struct ieee80211_rx_data {
 201         struct sk_buff *skb;
 202         struct ieee80211_local *local;
 203         struct ieee80211_sub_if_data *sdata;
 204         struct sta_info *sta;
 205         struct ieee80211_key *key;
 206
 207         unsigned int flags;
 208
 209         /*
 210          * Index into sequence numbers array, 0..16
 211          * since the last (16) is used for non-QoS,
 212          * will be 16 on non-QoS frames.
 213          */
 214         int seqno_idx;
 215
 216         /*
 217          * Index into the security IV/PN arrays, 0..16
 218          * since the last (16) is used for CCMP-encrypted
 219          * management frames, will be set to 16 on mgmt
 220          * frames and 0 on non-QoS frames.
 221          */
 222         int security_idx;
 223
 224         u32 tkip_iv32;
 225         u16 tkip_iv16;
 226 };
 227
 228 struct beacon_data {
 229         u8 *head, *tail;
 230         int head_len, tail_len;
 231         int dtim_period;
 232 };
 233
 234 struct ieee80211_if_ap {
 235         struct beacon_data __rcu *beacon;
 236         struct sk_buff __rcu *probe_resp;
 237
 238         struct list_head vlans;
 239
 240         /* yes, this looks ugly, but guarantees that we can later use
 241          * bitmap_empty :)
 242          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 243         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 244         struct sk_buff_head ps_bc_buf;
 245         atomic_t num_sta_ps; /* number of stations in PS mode */
 246         atomic_t num_sta_authorized; /* number of authorized stations */
 247         int dtim_count;
 248         bool dtim_bc_mc;
 249 };
 250
 251 struct ieee80211_if_wds {
 252         struct sta_info *sta;
 253         u8 remote_addr[ETH_ALEN];
 254 };
 255
 256 struct ieee80211_if_vlan {
 257         struct list_head list;
 258
 259         /* used for all tx if the VLAN is configured to 4-addr mode */
 260         struct sta_info __rcu *sta;
 261 };
 262
 263 struct mesh_stats {
 264         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 265         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 266         __u32 fwded_frames;             /* Mesh total forwarded frames */
 267         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 268         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 269         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 270         atomic_t estab_plinks;
 271 };
 272
 273 #define PREQ_Q_F_START          0x1
 274 #define PREQ_Q_F_REFRESH        0x2
 275 struct mesh_preq_queue {
 276         struct list_head list;
 277         u8 dst[ETH_ALEN];
 278         u8 flags;
 279 };
 280
 281 enum ieee80211_work_type {
 282         IEEE80211_WORK_ABORT,
 283         IEEE80211_WORK_DIRECT_PROBE,
 284         IEEE80211_WORK_AUTH,
 285         IEEE80211_WORK_ASSOC_BEACON_WAIT,
 286         IEEE80211_WORK_ASSOC,
 287         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 288         IEEE80211_WORK_OFFCHANNEL_TX,
 289 };
 290
 291 /**
 292  * enum work_done_result - indicates what to do after work was done
 293  *
 294  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 295  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 296  *      should be requeued.
 297  */
 298 enum work_done_result {
 299         WORK_DONE_DESTROY,
 300         WORK_DONE_REQUEUE,
 301 };
 302
 303 struct ieee80211_work {
 304         struct list_head list;
 305
 306         struct rcu_head rcu_head;
 307
 308         struct ieee80211_sub_if_data *sdata;
 309
 310         enum work_done_result (*done)(struct ieee80211_work *wk,
 311                                       struct sk_buff *skb);
 312
 313         struct ieee80211_channel *chan;
 314         enum nl80211_channel_type chan_type;
 315
 316         unsigned long timeout;
 317         enum ieee80211_work_type type;
 318
 319         u8 filter_ta[ETH_ALEN];
 320
 321         bool started;
 322
 323         union {
 324                 struct {
 325                         int tries;
 326                         u16 algorithm, transaction;
 327                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 328                         u8 ssid_len;
 329                         u8 key[WLAN_KEY_LEN_WEP104];
 330                         u8 key_len, key_idx;
 331                         bool privacy;
 332                         bool synced;
 333                 } probe_auth;
 334                 struct {
 335                         struct cfg80211_bss *bss;
 336                         const u8 *supp_rates;
 337                         const u8 *ht_information_ie;
 338                         enum ieee80211_smps_mode smps;
 339                         int tries;
 340                         u16 capability;
 341                         u8 prev_bssid[ETH_ALEN];
 342                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 343                         u8 ssid_len;
 344                         u8 supp_rates_len;
 345                         bool wmm_used, use_11n, uapsd_used;
 346                         bool synced;
 347                 } assoc;
 348                 struct {
 349                         u32 duration;
 350                 } remain;
 351                 struct {
 352                         struct sk_buff *frame;
 353                         u32 wait;
 354                         bool status;
 355                 } offchan_tx;
 356         };
 357
 358         int ie_len;
 359         /* must be last */
 360         u8 ie[0];
 361 };
 362
 363 /* flags used in struct ieee80211_if_managed.flags */
 364 enum ieee80211_sta_flags {
 365         IEEE80211_STA_BEACON_POLL       = BIT(0),
 366         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 367         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 368         IEEE80211_STA_DISABLE_11N       = BIT(4),
 369         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 370         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 371         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 372         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 373         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 374 };
 375
 376 struct ieee80211_if_managed {
 377         struct timer_list timer;
 378         struct timer_list conn_mon_timer;
 379         struct timer_list bcn_mon_timer;
 380         struct timer_list chswitch_timer;
 381         struct work_struct monitor_work;
 382         struct work_struct chswitch_work;
 383         struct work_struct beacon_connection_loss_work;
 384
 385         unsigned long beacon_timeout;
 386         unsigned long probe_timeout;
 387         int probe_send_count;
 388         bool nullfunc_failed;
 389
 390         struct mutex mtx;
 391         struct cfg80211_bss *associated;
 392
 393         u8 bssid[ETH_ALEN];
 394
 395         u16 aid;
 396
 397         unsigned long timers_running; /* used for quiesce/restart */
 398         bool powersave; /* powersave requested for this iface */
 399         bool broken_ap; /* AP is broken -- turn off powersave */
 400         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 401                                  ap_smps, /* smps mode AP thinks we're in */
 402                                  driver_smps_mode; /* smps mode request */
 403
 404         struct work_struct request_smps_work;
 405
 406         unsigned int flags;
 407
 408         bool beacon_crc_valid;
 409         u32 beacon_crc;
 410
 411         enum {
 412                 IEEE80211_MFP_DISABLED,
 413                 IEEE80211_MFP_OPTIONAL,
 414                 IEEE80211_MFP_REQUIRED
 415         } mfp; /* management frame protection */
 416
 417         int wmm_last_param_set;
 418
 419         u8 use_4addr;
 420
 421         /* Signal strength from the last Beacon frame in the current BSS. */
 422         int last_beacon_signal;
 423
 424         /*
 425          * Weighted average of the signal strength from Beacon frames in the
 426          * current BSS. This is in units of 1/16 of the signal unit to maintain
 427          * accuracy and to speed up calculations, i.e., the value need to be
 428          * divided by 16 to get the actual value.
 429          */
 430         int ave_beacon_signal;
 431
 432         /*
 433          * Number of Beacon frames used in ave_beacon_signal. This can be used
 434          * to avoid generating less reliable cqm events that would be based
 435          * only on couple of received frames.
 436          */
 437         unsigned int count_beacon_signal;
 438
 439         /*
 440          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 441          * that triggered a cqm event. 0 indicates that no event has been
 442          * generated for the current association.
 443          */
 444         int last_cqm_event_signal;
 445
 446         /*
 447          * State variables for keeping track of RSSI of the AP currently
 448          * connected to and informing driver when RSSI has gone
 449          * below/above a certain threshold.
 450          */
 451         int rssi_min_thold, rssi_max_thold;
 452         int last_ave_beacon_signal;
 453
 454         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 455         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 456 };
 457
 458 struct ieee80211_if_ibss {
 459         struct timer_list timer;
 460
 461         struct mutex mtx;
 462
 463         unsigned long last_scan_completed;
 464
 465         u32 basic_rates;
 466
 467         bool timer_running;
 468
 469         bool fixed_bssid;
 470         bool fixed_channel;
 471         bool privacy;
 472
 473         u8 bssid[ETH_ALEN];
 474         u8 ssid[IEEE80211_MAX_SSID_LEN];
 475         u8 ssid_len, ie_len;
 476         u8 *ie;
 477         struct ieee80211_channel *channel;
 478         enum nl80211_channel_type channel_type;
 479
 480         unsigned long ibss_join_req;
 481         /* probe response/beacon for IBSS */
 482         struct sk_buff __rcu *presp;
 483         struct sk_buff *skb;
 484
 485         spinlock_t incomplete_lock;
 486         struct list_head incomplete_stations;
 487
 488         enum {
 489                 IEEE80211_IBSS_MLME_SEARCH,
 490                 IEEE80211_IBSS_MLME_JOINED,
 491         } state;
 492 };
 493
 494 struct ieee80211_if_mesh {
 495         struct timer_list housekeeping_timer;
 496         struct timer_list mesh_path_timer;
 497         struct timer_list mesh_path_root_timer;
 498
 499         unsigned long timers_running;
 500
 501         unsigned long wrkq_flags;
 502
 503         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 504         size_t mesh_id_len;
 505         /* Active Path Selection Protocol Identifier */
 506         u8 mesh_pp_id;
 507         /* Active Path Selection Metric Identifier */
 508         u8 mesh_pm_id;
 509         /* Congestion Control Mode Identifier */
 510         u8 mesh_cc_id;
 511         /* Synchronization Protocol Identifier */
 512         u8 mesh_sp_id;
 513         /* Authentication Protocol Identifier */
 514         u8 mesh_auth_id;
 515         /* Local mesh Sequence Number */
 516         u32 sn;
 517         /* Last used PREQ ID */
 518         u32 preq_id;
 519         atomic_t mpaths;
 520         /* Timestamp of last SN update */
 521         unsigned long last_sn_update;
 522         /* Time when it's ok to send next PERR */
 523         unsigned long next_perr;
 524         /* Timestamp of last PREQ sent */
 525         unsigned long last_preq;
 526         struct mesh_rmc *rmc;
 527         spinlock_t mesh_preq_queue_lock;
 528         struct mesh_preq_queue preq_queue;
 529         int preq_queue_len;
 530         struct mesh_stats mshstats;
 531         struct mesh_config mshcfg;
 532         u32 mesh_seqnum;
 533         bool accepting_plinks;
 534         int num_gates;
 535         const u8 *ie;
 536         u8 ie_len;
 537         enum {
 538                 IEEE80211_MESH_SEC_NONE = 0x0,
 539                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 540                 IEEE80211_MESH_SEC_SECURED = 0x2,
 541         } security;
 542 };
 543
 544 #ifdef CONFIG_MAC80211_MESH
 545 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 546         do { (msh)->mshstats.name++; } while (0)
 547 #else
 548 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 549         do { } while (0)
 550 #endif
 551
 552 /**
 553  * enum ieee80211_sub_if_data_flags - virtual interface flags
 554  *
 555  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 556  * @IEEE80211_SDATA_PROMISC: interface is promisc
 557  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 558  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 559  *      associated stations and deliver multicast frames both
 560  *      back to wireless media and to the local net stack.
 561  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 562  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 563  */
 564 enum ieee80211_sub_if_data_flags {
 565         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 566         IEEE80211_SDATA_PROMISC                 = BIT(1),
 567         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 568         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 569         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 570         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 571 };
 572
 573 /**
 574  * enum ieee80211_sdata_state_bits - virtual interface state bits
 575  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 576  *      mirrors netif_running() but is separate for interface type
 577  *      change handling while the interface is up
 578  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 579  *      mode, so queues are stopped
 580  */
 581 enum ieee80211_sdata_state_bits {
 582         SDATA_STATE_RUNNING,
 583         SDATA_STATE_OFFCHANNEL,
 584 };
 585
 586 struct ieee80211_sub_if_data {
 587         struct list_head list;
 588
 589         struct wireless_dev wdev;
 590
 591         /* keys */
 592         struct list_head key_list;
 593
 594         /* count for keys needing tailroom space allocation */
 595         int crypto_tx_tailroom_needed_cnt;
 596
 597         struct net_device *dev;
 598         struct ieee80211_local *local;
 599
 600         unsigned int flags;
 601
 602         unsigned long state;
 603
 604         int drop_unencrypted;
 605
 606         char name[IFNAMSIZ];
 607
 608         /*
 609          * keep track of whether the HT opmode (stored in
 610          * vif.bss_info.ht_operation_mode) is valid.
 611          */
 612         bool ht_opmode_valid;
 613
 614         /* to detect idle changes */
 615         bool old_idle;
 616
 617         /* Fragment table for host-based reassembly */
 618         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 619         unsigned int fragment_next;
 620
 621         /* TID bitmap for NoAck policy */
 622         u16 noack_map;
 623
 624         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 625         struct ieee80211_key __rcu *default_unicast_key;
 626         struct ieee80211_key __rcu *default_multicast_key;
 627         struct ieee80211_key __rcu *default_mgmt_key;
 628
 629         u16 sequence_number;
 630         __be16 control_port_protocol;
 631         bool control_port_no_encrypt;
 632
 633         struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
 634
 635         struct work_struct work;
 636         struct sk_buff_head skb_queue;
 637
 638         bool arp_filter_state;
 639
 640         /*
 641          * AP this belongs to: self in AP mode and
 642          * corresponding AP in VLAN mode, NULL for
 643          * all others (might be needed later in IBSS)
 644          */
 645         struct ieee80211_if_ap *bss;
 646
 647         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 648         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 649
 650         union {
 651                 struct ieee80211_if_ap ap;
 652                 struct ieee80211_if_wds wds;
 653                 struct ieee80211_if_vlan vlan;
 654                 struct ieee80211_if_managed mgd;
 655                 struct ieee80211_if_ibss ibss;
 656                 struct ieee80211_if_mesh mesh;
 657                 u32 mntr_flags;
 658         } u;
 659
 660 #ifdef CONFIG_MAC80211_DEBUGFS
 661         struct {
 662                 struct dentry *dir;
 663                 struct dentry *subdir_stations;
 664                 struct dentry *default_unicast_key;
 665                 struct dentry *default_multicast_key;
 666                 struct dentry *default_mgmt_key;
 667         } debugfs;
 668 #endif
 669         /* must be last, dynamically sized area in this! */
 670         struct ieee80211_vif vif;
 671 };
 672
 673 static inline
 674 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 675 {
 676         return container_of(p, struct ieee80211_sub_if_data, vif);
 677 }
 678
 679 enum sdata_queue_type {
 680         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 681         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 682         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 683 };
 684
 685 enum {
 686         IEEE80211_RX_MSG        = 1,
 687         IEEE80211_TX_STATUS_MSG = 2,
 688         IEEE80211_EOSP_MSG      = 3,
 689 };
 690
 691 struct skb_eosp_msg_data {
 692         u8 sta[ETH_ALEN], iface[ETH_ALEN];
 693 };
 694
 695 enum queue_stop_reason {
 696         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 697         IEEE80211_QUEUE_STOP_REASON_PS,
 698         IEEE80211_QUEUE_STOP_REASON_CSA,
 699         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 700         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 701         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 702         IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE,
 703 };
 704
 705 #ifdef CONFIG_MAC80211_LEDS
 706 struct tpt_led_trigger {
 707         struct led_trigger trig;
 708         char name[32];
 709         const struct ieee80211_tpt_blink *blink_table;
 710         unsigned int blink_table_len;
 711         struct timer_list timer;
 712         unsigned long prev_traffic;
 713         unsigned long tx_bytes, rx_bytes;
 714         unsigned int active, want;
 715         bool running;
 716 };
 717 #endif
 718
 719 /**
 720  * mac80211 scan flags - currently active scan mode
 721  *
 722  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 723  *      well be on the operating channel
 724  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 725  *      determine if we are on the operating channel or not
 726  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 727  *      that the scan completed.
 728  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 729  *      a scan complete for an aborted scan.
 730  */
 731 enum {
 732         SCAN_SW_SCANNING,
 733         SCAN_HW_SCANNING,
 734         SCAN_COMPLETED,
 735         SCAN_ABORTED,
 736 };
 737
 738 /**
 739  * enum mac80211_scan_state - scan state machine states
 740  *
 741  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 742  *      determines if we should keep on scanning or switch back to the
 743  *      operating channel
 744  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 745  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 746  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 747  *      send out data
 748  * @SCAN_RESUME: Resume the scan and scan the next channel
 749  */
 750 enum mac80211_scan_state {
 751         SCAN_DECISION,
 752         SCAN_SET_CHANNEL,
 753         SCAN_SEND_PROBE,
 754         SCAN_SUSPEND,
 755         SCAN_RESUME,
 756 };
 757
 758 struct ieee80211_local {
 759         /* embed the driver visible part.
 760          * don't cast (use the static inlines below), but we keep
 761          * it first anyway so they become a no-op */
 762         struct ieee80211_hw hw;
 763
 764         const struct ieee80211_ops *ops;
 765
 766         /*
 767          * work stuff, potentially off-channel (in the future)
 768          */
 769         struct list_head work_list;
 770         struct timer_list work_timer;
 771         struct work_struct work_work;
 772         struct sk_buff_head work_skb_queue;
 773
 774         /*
 775          * private workqueue to mac80211. mac80211 makes this accessible
 776          * via ieee80211_queue_work()
 777          */
 778         struct workqueue_struct *workqueue;
 779
 780         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 781         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 782         spinlock_t queue_stop_reason_lock;
 783
 784         int open_count;
 785         int monitors, cooked_mntrs;
 786         /* number of interfaces with corresponding FIF_ flags */
 787         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 788             fif_probe_req;
 789         int probe_req_reg;
 790         unsigned int filter_flags; /* FIF_* */
 791
 792         bool wiphy_ciphers_allocated;
 793
 794         /* protects the aggregated multicast list and filter calls */
 795         spinlock_t filter_lock;
 796
 797         /* used for uploading changed mc list */
 798         struct work_struct reconfig_filter;
 799
 800         /* used to reconfigure hardware SM PS */
 801         struct work_struct recalc_smps;
 802
 803         /* aggregated multicast list */
 804         struct netdev_hw_addr_list mc_list;
 805
 806         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 807
 808         /*
 809          * suspended is true if we finished all the suspend _and_ we have
 810          * not yet come up from resume. This is to be used by mac80211
 811          * to ensure driver sanity during suspend and mac80211's own
 812          * sanity. It can eventually be used for WoW as well.
 813          */
 814         bool suspended;
 815
 816         /*
 817          * Resuming is true while suspended, but when we're reprogramming the
 818          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 819          * again even though some other parts of the stack are still suspended
 820          * and we still drop received frames to avoid waking the stack.
 821          */
 822         bool resuming;
 823
 824         /*
 825          * quiescing is true during the suspend process _only_ to
 826          * ease timer cancelling etc.
 827          */
 828         bool quiescing;
 829
 830         /* device is started */
 831         bool started;
 832
 833         /* wowlan is enabled -- don't reconfig on resume */
 834         bool wowlan;
 835
 836         int tx_headroom; /* required headroom for hardware/radiotap */
 837
 838         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 839          * added to skb_queue will be processed, but frames in
 840          * skb_queue_unreliable may be dropped if the total length of these
 841          * queues increases over the limit. */
 842 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 843         struct tasklet_struct tasklet;
 844         struct sk_buff_head skb_queue;
 845         struct sk_buff_head skb_queue_unreliable;
 846
 847         /*
 848          * Internal FIFO queue which is shared between multiple rx path
 849          * stages. Its main task is to provide a serialization mechanism,
 850          * so all rx handlers can enjoy having exclusive access to their
 851          * private data structures.
 852          */
 853         struct sk_buff_head rx_skb_queue;
 854         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 855
 856         /* Station data */
 857         /*
 858          * The mutex only protects the list, hash table and
 859          * counter, reads are done with RCU.
 860          */
 861         struct mutex sta_mtx;
 862         spinlock_t tim_lock;
 863         unsigned long num_sta;
 864         struct list_head sta_list;
 865         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
 866         struct timer_list sta_cleanup;
 867         int sta_generation;
 868
 869         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 870         struct tasklet_struct tx_pending_tasklet;
 871
 872         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 873
 874         /* number of interfaces with corresponding IFF_ flags */
 875         atomic_t iff_allmultis, iff_promiscs;
 876
 877         struct rate_control_ref *rate_ctrl;
 878
 879         struct crypto_cipher *wep_tx_tfm;
 880         struct crypto_cipher *wep_rx_tfm;
 881         u32 wep_iv;
 882
 883         /* see iface.c */
 884         struct list_head interfaces;
 885         struct mutex iflist_mtx;
 886
 887         /*
 888          * Key mutex, protects sdata's key_list and sta_info's
 889          * key pointers (write access, they're RCU.)
 890          */
 891         struct mutex key_mtx;
 892
 893         /* mutex for scan and work locking */
 894         struct mutex mtx;
 895
 896         /* Scanning and BSS list */
 897         unsigned long scanning;
 898         struct cfg80211_ssid scan_ssid;
 899         struct cfg80211_scan_request *int_scan_req;
 900         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 901         struct ieee80211_channel *scan_channel;
 902         enum ieee80211_band hw_scan_band;
 903         int scan_channel_idx;
 904         int scan_ies_len;
 905
 906         bool sched_scanning;
 907         struct ieee80211_sched_scan_ies sched_scan_ies;
 908         struct work_struct sched_scan_stopped_work;
 909
 910         unsigned long leave_oper_channel_time;
 911         enum mac80211_scan_state next_scan_state;
 912         struct delayed_work scan_work;
 913         struct ieee80211_sub_if_data *scan_sdata;
 914         enum nl80211_channel_type _oper_channel_type;
 915         struct ieee80211_channel *oper_channel, *csa_channel;
 916
 917         /* Temporary remain-on-channel for off-channel operations */
 918         struct ieee80211_channel *tmp_channel;
 919         enum nl80211_channel_type tmp_channel_type;
 920
 921         /* SNMP counters */
 922         /* dot11CountersTable */
 923         u32 dot11TransmittedFragmentCount;
 924         u32 dot11MulticastTransmittedFrameCount;
 925         u32 dot11FailedCount;
 926         u32 dot11RetryCount;
 927         u32 dot11MultipleRetryCount;
 928         u32 dot11FrameDuplicateCount;
 929         u32 dot11ReceivedFragmentCount;
 930         u32 dot11MulticastReceivedFrameCount;
 931         u32 dot11TransmittedFrameCount;
 932
 933 #ifdef CONFIG_MAC80211_LEDS
 934         int tx_led_counter, rx_led_counter;
 935         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 936         struct tpt_led_trigger *tpt_led_trigger;
 937         char tx_led_name[32], rx_led_name[32],
 938              assoc_led_name[32], radio_led_name[32];
 939 #endif
 940
 941 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 942         /* TX/RX handler statistics */
 943         unsigned int tx_handlers_drop;
 944         unsigned int tx_handlers_queued;
 945         unsigned int tx_handlers_drop_unencrypted;
 946         unsigned int tx_handlers_drop_fragment;
 947         unsigned int tx_handlers_drop_wep;
 948         unsigned int tx_handlers_drop_not_assoc;
 949         unsigned int tx_handlers_drop_unauth_port;
 950         unsigned int rx_handlers_drop;
 951         unsigned int rx_handlers_queued;
 952         unsigned int rx_handlers_drop_nullfunc;
 953         unsigned int rx_handlers_drop_defrag;
 954         unsigned int rx_handlers_drop_short;
 955         unsigned int rx_handlers_drop_passive_scan;
 956         unsigned int tx_expand_skb_head;
 957         unsigned int tx_expand_skb_head_cloned;
 958         unsigned int rx_expand_skb_head;
 959         unsigned int rx_expand_skb_head2;
 960         unsigned int rx_handlers_fragments;
 961         unsigned int tx_status_drop;
 962 #define I802_DEBUG_INC(c) (c)++
 963 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 964 #define I802_DEBUG_INC(c) do { } while (0)
 965 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 966
 967
 968         int total_ps_buffered; /* total number of all buffered unicast and
 969                                 * multicast packets for power saving stations
 970                                 */
 971         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 972
 973         /*
 974          * Bitmask of enabled u-apsd queues,
 975          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 976          * to take effect.
 977          */
 978         unsigned int uapsd_queues;
 979
 980         /*
 981          * Maximum number of buffered frames AP can deliver during a
 982          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 983          * Needs a new association to take effect.
 984          */
 985         unsigned int uapsd_max_sp_len;
 986
 987         bool pspolling;
 988         bool offchannel_ps_enabled;
 989         /*
 990          * PS can only be enabled when we have exactly one managed
 991          * interface (and monitors) in PS, this then points there.
 992          */
 993         struct ieee80211_sub_if_data *ps_sdata;
 994         struct work_struct dynamic_ps_enable_work;
 995         struct work_struct dynamic_ps_disable_work;
 996         struct timer_list dynamic_ps_timer;
 997         struct notifier_block network_latency_notifier;
 998         struct notifier_block ifa_notifier;
 999
1000         /*
1001          * The dynamic ps timeout configured from user space via WEXT -
1002          * this will override whatever chosen by mac80211 internally.
1003          */
1004         int dynamic_ps_forced_timeout;
1005         int dynamic_ps_user_timeout;
1006         bool disable_dynamic_ps;
1007
1008         int user_power_level; /* in dBm */
1009         int power_constr_level; /* in dBm */
1010
1011         enum ieee80211_smps_mode smps_mode;
1012
1013         struct work_struct restart_work;
1014
1015 #ifdef CONFIG_MAC80211_DEBUGFS
1016         struct local_debugfsdentries {
1017                 struct dentry *rcdir;
1018                 struct dentry *keys;
1019         } debugfs;
1020 #endif
1021
1022         struct ieee80211_channel *hw_roc_channel;
1023         struct net_device *hw_roc_dev;
1024         struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
1025         struct work_struct hw_roc_start, hw_roc_done;
1026         enum nl80211_channel_type hw_roc_channel_type;
1027         unsigned int hw_roc_duration;
1028         u32 hw_roc_cookie;
1029         bool hw_roc_for_tx;
1030
1031         struct idr ack_status_frames;
1032         spinlock_t ack_status_lock;
1033
1034         /* dummy netdev for use w/ NAPI */
1035         struct net_device napi_dev;
1036
1037         struct napi_struct napi;
1038 };
1039
1040 static inline struct ieee80211_sub_if_data *
1041 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1042 {
1043         return netdev_priv(dev);
1044 }
1045
1046 /* this struct represents 802.11n's RA/TID combination */
1047 struct ieee80211_ra_tid {
1048         u8 ra[ETH_ALEN];
1049         u16 tid;
1050 };
1051
1052 /* Parsed Information Elements */
1053 struct ieee802_11_elems {
1054         u8 *ie_start;
1055         size_t total_len;
1056
1057         /* pointers to IEs */
1058         u8 *ssid;
1059         u8 *supp_rates;
1060         u8 *fh_params;
1061         u8 *ds_params;
1062         u8 *cf_params;
1063         struct ieee80211_tim_ie *tim;
1064         u8 *ibss_params;
1065         u8 *challenge;
1066         u8 *wpa;
1067         u8 *rsn;
1068         u8 *erp_info;
1069         u8 *ext_supp_rates;
1070         u8 *wmm_info;
1071         u8 *wmm_param;
1072         struct ieee80211_ht_cap *ht_cap_elem;
1073         struct ieee80211_ht_info *ht_info_elem;
1074         struct ieee80211_meshconf_ie *mesh_config;
1075         u8 *mesh_id;
1076         u8 *peering;
1077         u8 *preq;
1078         u8 *prep;
1079         u8 *perr;
1080         struct ieee80211_rann_ie *rann;
1081         u8 *ch_switch_elem;
1082         u8 *country_elem;
1083         u8 *pwr_constr_elem;
1084         u8 *quiet_elem; /* first quite element */
1085         u8 *timeout_int;
1086
1087         /* length of them, respectively */
1088         u8 ssid_len;
1089         u8 supp_rates_len;
1090         u8 fh_params_len;
1091         u8 ds_params_len;
1092         u8 cf_params_len;
1093         u8 tim_len;
1094         u8 ibss_params_len;
1095         u8 challenge_len;
1096         u8 wpa_len;
1097         u8 rsn_len;
1098         u8 erp_info_len;
1099         u8 ext_supp_rates_len;
1100         u8 wmm_info_len;
1101         u8 wmm_param_len;
1102         u8 mesh_id_len;
1103         u8 peering_len;
1104         u8 preq_len;
1105         u8 prep_len;
1106         u8 perr_len;
1107         u8 ch_switch_elem_len;
1108         u8 country_elem_len;
1109         u8 pwr_constr_elem_len;
1110         u8 quiet_elem_len;
1111         u8 num_of_quiet_elem;   /* can be more the one */
1112         u8 timeout_int_len;
1113 };
1114
1115 static inline struct ieee80211_local *hw_to_local(
1116         struct ieee80211_hw *hw)
1117 {
1118         return container_of(hw, struct ieee80211_local, hw);
1119 }
1120
1121 static inline struct ieee80211_hw *local_to_hw(
1122         struct ieee80211_local *local)
1123 {
1124         return &local->hw;
1125 }
1126
1127
1128 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1129 {
1130         return compare_ether_addr(raddr, addr) == 0 ||
1131                is_broadcast_ether_addr(raddr);
1132 }
1133
1134
1135 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1136 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1137 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1138                                       u32 changed);
1139 void ieee80211_configure_filter(struct ieee80211_local *local);
1140 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1141
1142 /* STA code */
1143 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1144 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1145                        struct cfg80211_auth_request *req);
1146 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1147                         struct cfg80211_assoc_request *req);
1148 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1149                          struct cfg80211_deauth_request *req,
1150                          void *cookie);
1151 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1152                            struct cfg80211_disassoc_request *req,
1153                            void *cookie);
1154 void ieee80211_send_pspoll(struct ieee80211_local *local,
1155                            struct ieee80211_sub_if_data *sdata);
1156 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1157 int ieee80211_max_network_latency(struct notifier_block *nb,
1158                                   unsigned long data, void *dummy);
1159 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1160 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1161                                       struct ieee80211_channel_sw_ie *sw_elem,
1162                                       struct ieee80211_bss *bss,
1163                                       u64 timestamp);
1164 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1165 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1166 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1167 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1168                                   struct sk_buff *skb);
1169 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1170 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1171
1172 /* IBSS code */
1173 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1174 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1175 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1176                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1177 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1178                         struct cfg80211_ibss_params *params);
1179 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1180 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1181 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1182 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1183 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1184                                    struct sk_buff *skb);
1185
1186 /* mesh code */
1187 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1188 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1189                                    struct sk_buff *skb);
1190
1191 /* scan/BSS handling */
1192 void ieee80211_scan_work(struct work_struct *work);
1193 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1194                                     const u8 *ssid, u8 ssid_len,
1195                                     struct ieee80211_channel *chan);
1196 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1197                            struct cfg80211_scan_request *req);
1198 void ieee80211_scan_cancel(struct ieee80211_local *local);
1199 ieee80211_rx_result
1200 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1201
1202 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1203 struct ieee80211_bss *
1204 ieee80211_bss_info_update(struct ieee80211_local *local,
1205                           struct ieee80211_rx_status *rx_status,
1206                           struct ieee80211_mgmt *mgmt,
1207                           size_t len,
1208                           struct ieee802_11_elems *elems,
1209                           struct ieee80211_channel *channel,
1210                           bool beacon);
1211 struct ieee80211_bss *
1212 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1213                      u8 *ssid, u8 ssid_len);
1214 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1215                           struct ieee80211_bss *bss);
1216
1217 /* scheduled scan handling */
1218 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1219                                        struct cfg80211_sched_scan_request *req);
1220 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1221 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1222
1223 /* off-channel helpers */
1224 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1225                                     bool offchannel_ps_enable);
1226 void ieee80211_offchannel_return(struct ieee80211_local *local,
1227                                  bool offchannel_ps_disable);
1228 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1229
1230 /* interface handling */
1231 int ieee80211_iface_init(void);
1232 void ieee80211_iface_exit(void);
1233 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1234                      struct net_device **new_dev, enum nl80211_iftype type,
1235                      struct vif_params *params);
1236 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1237                              enum nl80211_iftype type);
1238 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1239 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1240 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1241 void ieee80211_recalc_idle(struct ieee80211_local *local);
1242 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1243                                     const int offset);
1244
1245 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1246 {
1247         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1248 }
1249
1250 /* tx handling */
1251 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1252 void ieee80211_tx_pending(unsigned long data);
1253 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1254                                          struct net_device *dev);
1255 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1256                                        struct net_device *dev);
1257
1258 /* HT */
1259 bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata);
1260 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1261                                      struct ieee80211_sta_ht_cap *ht_cap);
1262 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1263                                        struct ieee80211_supported_band *sband,
1264                                        struct ieee80211_ht_cap *ht_cap_ie,
1265                                        struct ieee80211_sta_ht_cap *ht_cap);
1266 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1267                           const u8 *da, u16 tid,
1268                           u16 initiator, u16 reason_code);
1269 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1270                                enum ieee80211_smps_mode smps, const u8 *da,
1271                                const u8 *bssid);
1272 void ieee80211_request_smps_work(struct work_struct *work);
1273
1274 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1275                                      u16 initiator, u16 reason, bool stop);
1276 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1277                                     u16 initiator, u16 reason, bool stop);
1278 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1279 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1280                              struct sta_info *sta,
1281                              struct ieee80211_mgmt *mgmt, size_t len);
1282 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1283                                   struct sta_info *sta,
1284                                   struct ieee80211_mgmt *mgmt,
1285                                   size_t len);
1286 void ieee80211_process_addba_request(struct ieee80211_local *local,
1287                                      struct sta_info *sta,
1288                                      struct ieee80211_mgmt *mgmt,
1289                                      size_t len);
1290
1291 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1292                                    enum ieee80211_back_parties initiator,
1293                                    bool tx);
1294 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1295                                     enum ieee80211_back_parties initiator,
1296                                     bool tx);
1297 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1298 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1299 void ieee80211_ba_session_work(struct work_struct *work);
1300 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1301 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1302
1303 /* Spectrum management */
1304 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1305                                        struct ieee80211_mgmt *mgmt,
1306                                        size_t len);
1307
1308 /* Suspend/resume and hw reconfiguration */
1309 int ieee80211_reconfig(struct ieee80211_local *local);
1310 void ieee80211_stop_device(struct ieee80211_local *local);
1311
1312 #ifdef CONFIG_PM
1313 int __ieee80211_suspend(struct ieee80211_hw *hw,
1314                         struct cfg80211_wowlan *wowlan);
1315
1316 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1317 {
1318         struct ieee80211_local *local = hw_to_local(hw);
1319
1320         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1321                 "%s: resume with hardware scan still in progress\n",
1322                 wiphy_name(hw->wiphy));
1323
1324         return ieee80211_reconfig(hw_to_local(hw));
1325 }
1326 #else
1327 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1328                                       struct cfg80211_wowlan *wowlan)
1329 {
1330         return 0;
1331 }
1332
1333 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1334 {
1335         return 0;
1336 }
1337 #endif
1338
1339 /* utility functions/constants */
1340 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1341 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1342                         enum nl80211_iftype type);
1343 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1344                              int rate, int erp, int short_preamble);
1345 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1346                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1347                                      gfp_t gfp);
1348 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1349 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1350
1351 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1352                           struct sk_buff *skb, int tid);
1353 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1354                                     struct sk_buff *skb)
1355 {
1356         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1357         ieee80211_tx_skb_tid(sdata, skb, 7);
1358 }
1359
1360 void ieee802_11_parse_elems(u8 *start, size_t len,
1361                             struct ieee802_11_elems *elems);
1362 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1363                                struct ieee802_11_elems *elems,
1364                                u64 filter, u32 crc);
1365 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1366                               enum ieee80211_band band);
1367
1368 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1369 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1370 void ieee80211_dynamic_ps_timer(unsigned long data);
1371 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1372                              struct ieee80211_sub_if_data *sdata,
1373                              int powersave);
1374 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1375                              struct ieee80211_hdr *hdr);
1376 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1377                              struct ieee80211_hdr *hdr, bool ack);
1378 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1379
1380 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1381                                      enum queue_stop_reason reason);
1382 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1383                                      enum queue_stop_reason reason);
1384 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1385                                     enum queue_stop_reason reason);
1386 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1387                                     enum queue_stop_reason reason);
1388 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1389                                struct sk_buff *skb);
1390 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1391                                 struct sk_buff_head *skbs);
1392 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1393                                    struct sk_buff_head *skbs,
1394                                    void (*fn)(void *data), void *data);
1395
1396 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1397                          u16 transaction, u16 auth_alg,
1398                          u8 *extra, size_t extra_len, const u8 *bssid,
1399                          const u8 *key, u8 key_len, u8 key_idx);
1400 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1401                              const u8 *ie, size_t ie_len,
1402                              enum ieee80211_band band, u32 rate_mask,
1403                              u8 channel);
1404 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1405                                           u8 *dst, u32 ratemask,
1406                                           const u8 *ssid, size_t ssid_len,
1407                                           const u8 *ie, size_t ie_len,
1408                                           bool directed);
1409 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1410                               const u8 *ssid, size_t ssid_len,
1411                               const u8 *ie, size_t ie_len,
1412                               u32 ratemask, bool directed, bool no_cck);
1413
1414 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1415                                   const size_t supp_rates_len,
1416                                   const u8 *supp_rates);
1417 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1418                             struct ieee802_11_elems *elems,
1419                             enum ieee80211_band band);
1420 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1421                              enum ieee80211_smps_mode smps_mode);
1422 void ieee80211_recalc_smps(struct ieee80211_local *local);
1423
1424 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1425                           const u8 *ids, int n_ids, size_t offset);
1426 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1427 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1428                               u16 cap);
1429 u8 *ieee80211_ie_build_ht_info(u8 *pos,
1430                                 struct ieee80211_sta_ht_cap *ht_cap,
1431                                 struct ieee80211_channel *channel,
1432                                 enum nl80211_channel_type channel_type);
1433
1434 /* internal work items */
1435 void ieee80211_work_init(struct ieee80211_local *local);
1436 void ieee80211_add_work(struct ieee80211_work *wk);
1437 void free_work(struct ieee80211_work *wk);
1438 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1439 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1440                                            struct sk_buff *skb);
1441 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1442                                    struct ieee80211_channel *chan,
1443                                    enum nl80211_channel_type channel_type,
1444                                    unsigned int duration, u64 *cookie);
1445 int ieee80211_wk_cancel_remain_on_channel(
1446         struct ieee80211_sub_if_data *sdata, u64 cookie);
1447
1448 /* channel management */
1449 enum ieee80211_chan_mode {
1450         CHAN_MODE_UNDEFINED,
1451         CHAN_MODE_HOPPING,
1452         CHAN_MODE_FIXED,
1453 };
1454
1455 enum ieee80211_chan_mode
1456 ieee80211_get_channel_mode(struct ieee80211_local *local,
1457                            struct ieee80211_sub_if_data *ignore);
1458 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1459                                 struct ieee80211_sub_if_data *sdata,
1460                                 enum nl80211_channel_type chantype);
1461 enum nl80211_channel_type
1462 ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info);
1463
1464 #ifdef CONFIG_MAC80211_NOINLINE
1465 #define debug_noinline noinline
1466 #else
1467 #define debug_noinline
1468 #endif
1469
1470 #endif /* IEEE80211_I_H */