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         bool dtim_bc_mc;
 229 };
 230
 231 struct ieee80211_if_wds {
 232         struct sta_info *sta;
 233         u8 remote_addr[ETH_ALEN];
 234 };
 235
 236 struct ieee80211_if_vlan {
 237         struct list_head list;
 238
 239         /* used for all tx if the VLAN is configured to 4-addr mode */
 240         struct sta_info *sta;
 241 };
 242
 243 struct mesh_stats {
 244         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 245         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 246         __u32 fwded_frames;             /* Mesh total forwarded frames */
 247         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 248         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 249         atomic_t estab_plinks;
 250 };
 251
 252 #define PREQ_Q_F_START          0x1
 253 #define PREQ_Q_F_REFRESH        0x2
 254 struct mesh_preq_queue {
 255         struct list_head list;
 256         u8 dst[ETH_ALEN];
 257         u8 flags;
 258 };
 259
 260 enum ieee80211_work_type {
 261         IEEE80211_WORK_ABORT,
 262         IEEE80211_WORK_DIRECT_PROBE,
 263         IEEE80211_WORK_AUTH,
 264         IEEE80211_WORK_ASSOC_BEACON_WAIT,
 265         IEEE80211_WORK_ASSOC,
 266         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 267         IEEE80211_WORK_OFFCHANNEL_TX,
 268 };
 269
 270 /**
 271  * enum work_done_result - indicates what to do after work was done
 272  *
 273  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 274  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 275  *      should be requeued.
 276  */
 277 enum work_done_result {
 278         WORK_DONE_DESTROY,
 279         WORK_DONE_REQUEUE,
 280 };
 281
 282 struct ieee80211_work {
 283         struct list_head list;
 284
 285         struct rcu_head rcu_head;
 286
 287         struct ieee80211_sub_if_data *sdata;
 288
 289         enum work_done_result (*done)(struct ieee80211_work *wk,
 290                                       struct sk_buff *skb);
 291
 292         struct ieee80211_channel *chan;
 293         enum nl80211_channel_type chan_type;
 294
 295         unsigned long timeout;
 296         enum ieee80211_work_type type;
 297
 298         u8 filter_ta[ETH_ALEN];
 299
 300         bool started;
 301
 302         union {
 303                 struct {
 304                         int tries;
 305                         u16 algorithm, transaction;
 306                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 307                         u8 ssid_len;
 308                         u8 key[WLAN_KEY_LEN_WEP104];
 309                         u8 key_len, key_idx;
 310                         bool privacy;
 311                 } probe_auth;
 312                 struct {
 313                         struct cfg80211_bss *bss;
 314                         const u8 *supp_rates;
 315                         const u8 *ht_information_ie;
 316                         enum ieee80211_smps_mode smps;
 317                         int tries;
 318                         u16 capability;
 319                         u8 prev_bssid[ETH_ALEN];
 320                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 321                         u8 ssid_len;
 322                         u8 supp_rates_len;
 323                         bool wmm_used, use_11n, uapsd_used;
 324                 } assoc;
 325                 struct {
 326                         u32 duration;
 327                 } remain;
 328                 struct {
 329                         struct sk_buff *frame;
 330                         u32 wait;
 331                 } offchan_tx;
 332         };
 333
 334         int ie_len;
 335         /* must be last */
 336         u8 ie[0];
 337 };
 338
 339 /* flags used in struct ieee80211_if_managed.flags */
 340 enum ieee80211_sta_flags {
 341         IEEE80211_STA_BEACON_POLL       = BIT(0),
 342         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 343         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 344         IEEE80211_STA_DISABLE_11N       = BIT(4),
 345         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 346         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 347         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 348         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 349         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 350 };
 351
 352 struct ieee80211_if_managed {
 353         struct timer_list timer;
 354         struct timer_list conn_mon_timer;
 355         struct timer_list bcn_mon_timer;
 356         struct timer_list chswitch_timer;
 357         struct work_struct monitor_work;
 358         struct work_struct chswitch_work;
 359         struct work_struct beacon_connection_loss_work;
 360
 361         unsigned long beacon_timeout;
 362         unsigned long probe_timeout;
 363         int probe_send_count;
 364         bool nullfunc_failed;
 365
 366         struct mutex mtx;
 367         struct cfg80211_bss *associated;
 368
 369         u8 bssid[ETH_ALEN];
 370
 371         u16 aid;
 372
 373         unsigned long timers_running; /* used for quiesce/restart */
 374         bool powersave; /* powersave requested for this iface */
 375         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 376                                  ap_smps, /* smps mode AP thinks we're in */
 377                                  driver_smps_mode; /* smps mode request */
 378
 379         struct work_struct request_smps_work;
 380
 381         unsigned int flags;
 382
 383         bool beacon_crc_valid;
 384         u32 beacon_crc;
 385
 386         enum {
 387                 IEEE80211_MFP_DISABLED,
 388                 IEEE80211_MFP_OPTIONAL,
 389                 IEEE80211_MFP_REQUIRED
 390         } mfp; /* management frame protection */
 391
 392         int wmm_last_param_set;
 393
 394         u8 use_4addr;
 395
 396         /* Signal strength from the last Beacon frame in the current BSS. */
 397         int last_beacon_signal;
 398
 399         /*
 400          * Weighted average of the signal strength from Beacon frames in the
 401          * current BSS. This is in units of 1/16 of the signal unit to maintain
 402          * accuracy and to speed up calculations, i.e., the value need to be
 403          * divided by 16 to get the actual value.
 404          */
 405         int ave_beacon_signal;
 406
 407         /*
 408          * Number of Beacon frames used in ave_beacon_signal. This can be used
 409          * to avoid generating less reliable cqm events that would be based
 410          * only on couple of received frames.
 411          */
 412         unsigned int count_beacon_signal;
 413
 414         /*
 415          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 416          * that triggered a cqm event. 0 indicates that no event has been
 417          * generated for the current association.
 418          */
 419         int last_cqm_event_signal;
 420 };
 421
 422 struct ieee80211_if_ibss {
 423         struct timer_list timer;
 424
 425         struct mutex mtx;
 426
 427         unsigned long last_scan_completed;
 428
 429         u32 basic_rates;
 430
 431         bool timer_running;
 432
 433         bool fixed_bssid;
 434         bool fixed_channel;
 435         bool privacy;
 436
 437         u8 bssid[ETH_ALEN];
 438         u8 ssid[IEEE80211_MAX_SSID_LEN];
 439         u8 ssid_len, ie_len;
 440         u8 *ie;
 441         struct ieee80211_channel *channel;
 442
 443         unsigned long ibss_join_req;
 444         /* probe response/beacon for IBSS */
 445         struct sk_buff *presp, *skb;
 446
 447         enum {
 448                 IEEE80211_IBSS_MLME_SEARCH,
 449                 IEEE80211_IBSS_MLME_JOINED,
 450         } state;
 451 };
 452
 453 struct ieee80211_if_mesh {
 454         struct timer_list housekeeping_timer;
 455         struct timer_list mesh_path_timer;
 456         struct timer_list mesh_path_root_timer;
 457
 458         unsigned long timers_running;
 459
 460         unsigned long wrkq_flags;
 461
 462         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 463         size_t mesh_id_len;
 464         /* Active Path Selection Protocol Identifier */
 465         u8 mesh_pp_id;
 466         /* Active Path Selection Metric Identifier */
 467         u8 mesh_pm_id;
 468         /* Congestion Control Mode Identifier */
 469         u8 mesh_cc_id;
 470         /* Synchronization Protocol Identifier */
 471         u8 mesh_sp_id;
 472         /* Authentication Protocol Identifier */
 473         u8 mesh_auth_id;
 474         /* Local mesh Sequence Number */
 475         u32 sn;
 476         /* Last used PREQ ID */
 477         u32 preq_id;
 478         atomic_t mpaths;
 479         /* Timestamp of last SN update */
 480         unsigned long last_sn_update;
 481         /* Timestamp of last SN sent */
 482         unsigned long last_preq;
 483         struct mesh_rmc *rmc;
 484         spinlock_t mesh_preq_queue_lock;
 485         struct mesh_preq_queue preq_queue;
 486         int preq_queue_len;
 487         struct mesh_stats mshstats;
 488         struct mesh_config mshcfg;
 489         u32 mesh_seqnum;
 490         bool accepting_plinks;
 491         const u8 *ie;
 492         u8 ie_len;
 493         enum {
 494                 IEEE80211_MESH_SEC_NONE = 0x0,
 495                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 496                 IEEE80211_MESH_SEC_SECURED = 0x2,
 497         } security;
 498 };
 499
 500 #ifdef CONFIG_MAC80211_MESH
 501 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 502         do { (msh)->mshstats.name++; } while (0)
 503 #else
 504 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 505         do { } while (0)
 506 #endif
 507
 508 /**
 509  * enum ieee80211_sub_if_data_flags - virtual interface flags
 510  *
 511  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 512  * @IEEE80211_SDATA_PROMISC: interface is promisc
 513  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 514  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 515  *      associated stations and deliver multicast frames both
 516  *      back to wireless media and to the local net stack.
 517  */
 518 enum ieee80211_sub_if_data_flags {
 519         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 520         IEEE80211_SDATA_PROMISC                 = BIT(1),
 521         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 522         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 523 };
 524
 525 /**
 526  * enum ieee80211_sdata_state_bits - virtual interface state bits
 527  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 528  *      mirrors netif_running() but is separate for interface type
 529  *      change handling while the interface is up
 530  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 531  *      mode, so queues are stopped
 532  */
 533 enum ieee80211_sdata_state_bits {
 534         SDATA_STATE_RUNNING,
 535         SDATA_STATE_OFFCHANNEL,
 536 };
 537
 538 struct ieee80211_sub_if_data {
 539         struct list_head list;
 540
 541         struct wireless_dev wdev;
 542
 543         /* keys */
 544         struct list_head key_list;
 545
 546         struct net_device *dev;
 547         struct ieee80211_local *local;
 548
 549         unsigned int flags;
 550
 551         unsigned long state;
 552
 553         int drop_unencrypted;
 554
 555         char name[IFNAMSIZ];
 556
 557         /*
 558          * keep track of whether the HT opmode (stored in
 559          * vif.bss_info.ht_operation_mode) is valid.
 560          */
 561         bool ht_opmode_valid;
 562
 563         /* to detect idle changes */
 564         bool old_idle;
 565
 566         /* Fragment table for host-based reassembly */
 567         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 568         unsigned int fragment_next;
 569
 570         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 571         struct ieee80211_key *default_unicast_key, *default_multicast_key;
 572         struct ieee80211_key *default_mgmt_key;
 573
 574         u16 sequence_number;
 575         __be16 control_port_protocol;
 576         bool control_port_no_encrypt;
 577
 578         struct work_struct work;
 579         struct sk_buff_head skb_queue;
 580
 581         bool arp_filter_state;
 582
 583         /*
 584          * AP this belongs to: self in AP mode and
 585          * corresponding AP in VLAN mode, NULL for
 586          * all others (might be needed later in IBSS)
 587          */
 588         struct ieee80211_if_ap *bss;
 589
 590         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 591         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 592
 593         union {
 594                 struct ieee80211_if_ap ap;
 595                 struct ieee80211_if_wds wds;
 596                 struct ieee80211_if_vlan vlan;
 597                 struct ieee80211_if_managed mgd;
 598                 struct ieee80211_if_ibss ibss;
 599                 struct ieee80211_if_mesh mesh;
 600                 u32 mntr_flags;
 601         } u;
 602
 603 #ifdef CONFIG_MAC80211_DEBUGFS
 604         struct {
 605                 struct dentry *dir;
 606                 struct dentry *subdir_stations;
 607                 struct dentry *default_unicast_key;
 608                 struct dentry *default_multicast_key;
 609                 struct dentry *default_mgmt_key;
 610         } debugfs;
 611 #endif
 612         /* must be last, dynamically sized area in this! */
 613         struct ieee80211_vif vif;
 614 };
 615
 616 static inline
 617 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 618 {
 619         return container_of(p, struct ieee80211_sub_if_data, vif);
 620 }
 621
 622 enum sdata_queue_type {
 623         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 624         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 625         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 626 };
 627
 628 enum {
 629         IEEE80211_RX_MSG        = 1,
 630         IEEE80211_TX_STATUS_MSG = 2,
 631 };
 632
 633 enum queue_stop_reason {
 634         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 635         IEEE80211_QUEUE_STOP_REASON_PS,
 636         IEEE80211_QUEUE_STOP_REASON_CSA,
 637         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 638         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 639         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 640 };
 641
 642 #ifdef CONFIG_MAC80211_LEDS
 643 struct tpt_led_trigger {
 644         struct led_trigger trig;
 645         char name[32];
 646         const struct ieee80211_tpt_blink *blink_table;
 647         unsigned int blink_table_len;
 648         struct timer_list timer;
 649         unsigned long prev_traffic;
 650         unsigned long tx_bytes, rx_bytes;
 651         unsigned int active, want;
 652         bool running;
 653 };
 654 #endif
 655
 656 /**
 657  * mac80211 scan flags - currently active scan mode
 658  *
 659  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 660  *      well be on the operating channel
 661  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 662  *      determine if we are on the operating channel or not
 663  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 664  *      that the scan completed.
 665  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 666  *      a scan complete for an aborted scan.
 667  */
 668 enum {
 669         SCAN_SW_SCANNING,
 670         SCAN_HW_SCANNING,
 671         SCAN_COMPLETED,
 672         SCAN_ABORTED,
 673 };
 674
 675 /**
 676  * enum mac80211_scan_state - scan state machine states
 677  *
 678  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 679  *      determines if we should keep on scanning or switch back to the
 680  *      operating channel
 681  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 682  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 683  * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 684  *      about us leaving the channel and stop all associated STA interfaces
 685  * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 686  *      AP about us being back and restart all associated STA interfaces
 687  */
 688 enum mac80211_scan_state {
 689         SCAN_DECISION,
 690         SCAN_SET_CHANNEL,
 691         SCAN_SEND_PROBE,
 692         SCAN_LEAVE_OPER_CHANNEL,
 693         SCAN_ENTER_OPER_CHANNEL,
 694 };
 695
 696 struct ieee80211_local {
 697         /* embed the driver visible part.
 698          * don't cast (use the static inlines below), but we keep
 699          * it first anyway so they become a no-op */
 700         struct ieee80211_hw hw;
 701
 702         const struct ieee80211_ops *ops;
 703
 704         /*
 705          * work stuff, potentially off-channel (in the future)
 706          */
 707         struct list_head work_list;
 708         struct timer_list work_timer;
 709         struct work_struct work_work;
 710         struct sk_buff_head work_skb_queue;
 711
 712         /*
 713          * private workqueue to mac80211. mac80211 makes this accessible
 714          * via ieee80211_queue_work()
 715          */
 716         struct workqueue_struct *workqueue;
 717
 718         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 719         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 720         spinlock_t queue_stop_reason_lock;
 721
 722         int open_count;
 723         int monitors, cooked_mntrs;
 724         /* number of interfaces with corresponding FIF_ flags */
 725         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 726             fif_probe_req;
 727         int probe_req_reg;
 728         unsigned int filter_flags; /* FIF_* */
 729
 730         bool wiphy_ciphers_allocated;
 731
 732         /* protects the aggregated multicast list and filter calls */
 733         spinlock_t filter_lock;
 734
 735         /* used for uploading changed mc list */
 736         struct work_struct reconfig_filter;
 737
 738         /* used to reconfigure hardware SM PS */
 739         struct work_struct recalc_smps;
 740
 741         /* aggregated multicast list */
 742         struct netdev_hw_addr_list mc_list;
 743
 744         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 745
 746         /*
 747          * suspended is true if we finished all the suspend _and_ we have
 748          * not yet come up from resume. This is to be used by mac80211
 749          * to ensure driver sanity during suspend and mac80211's own
 750          * sanity. It can eventually be used for WoW as well.
 751          */
 752         bool suspended;
 753
 754         /*
 755          * Resuming is true while suspended, but when we're reprogramming the
 756          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 757          * again even though some other parts of the stack are still suspended
 758          * and we still drop received frames to avoid waking the stack.
 759          */
 760         bool resuming;
 761
 762         /*
 763          * quiescing is true during the suspend process _only_ to
 764          * ease timer cancelling etc.
 765          */
 766         bool quiescing;
 767
 768         /* device is started */
 769         bool started;
 770
 771         /* wowlan is enabled -- don't reconfig on resume */
 772         bool wowlan;
 773
 774         int tx_headroom; /* required headroom for hardware/radiotap */
 775
 776         /* count for keys needing tailroom space allocation */
 777         int crypto_tx_tailroom_needed_cnt;
 778
 779         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 780          * added to skb_queue will be processed, but frames in
 781          * skb_queue_unreliable may be dropped if the total length of these
 782          * queues increases over the limit. */
 783 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 784         struct tasklet_struct tasklet;
 785         struct sk_buff_head skb_queue;
 786         struct sk_buff_head skb_queue_unreliable;
 787
 788         /*
 789          * Internal FIFO queue which is shared between multiple rx path
 790          * stages. Its main task is to provide a serialization mechanism,
 791          * so all rx handlers can enjoy having exclusive access to their
 792          * private data structures.
 793          */
 794         struct sk_buff_head rx_skb_queue;
 795         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 796
 797         /* Station data */
 798         /*
 799          * The mutex only protects the list and counter,
 800          * reads are done in RCU.
 801          * Additionally, the lock protects the hash table,
 802          * the pending list and each BSS's TIM bitmap.
 803          */
 804         struct mutex sta_mtx;
 805         spinlock_t sta_lock;
 806         unsigned long num_sta;
 807         struct list_head sta_list, sta_pending_list;
 808         struct sta_info *sta_hash[STA_HASH_SIZE];
 809         struct timer_list sta_cleanup;
 810         struct work_struct sta_finish_work;
 811         int sta_generation;
 812
 813         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 814         struct tasklet_struct tx_pending_tasklet;
 815
 816         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 817
 818         /* number of interfaces with corresponding IFF_ flags */
 819         atomic_t iff_allmultis, iff_promiscs;
 820
 821         struct rate_control_ref *rate_ctrl;
 822
 823         struct crypto_cipher *wep_tx_tfm;
 824         struct crypto_cipher *wep_rx_tfm;
 825         u32 wep_iv;
 826
 827         /* see iface.c */
 828         struct list_head interfaces;
 829         struct mutex iflist_mtx;
 830
 831         /*
 832          * Key mutex, protects sdata's key_list and sta_info's
 833          * key pointers (write access, they're RCU.)
 834          */
 835         struct mutex key_mtx;
 836
 837         /* mutex for scan and work locking */
 838         struct mutex mtx;
 839
 840         /* Scanning and BSS list */
 841         unsigned long scanning;
 842         struct cfg80211_ssid scan_ssid;
 843         struct cfg80211_scan_request *int_scan_req;
 844         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 845         struct ieee80211_channel *scan_channel;
 846         enum ieee80211_band hw_scan_band;
 847         int scan_channel_idx;
 848         int scan_ies_len;
 849
 850         unsigned long leave_oper_channel_time;
 851         enum mac80211_scan_state next_scan_state;
 852         struct delayed_work scan_work;
 853         struct ieee80211_sub_if_data *scan_sdata;
 854         enum nl80211_channel_type _oper_channel_type;
 855         struct ieee80211_channel *oper_channel, *csa_channel;
 856
 857         /* Temporary remain-on-channel for off-channel operations */
 858         struct ieee80211_channel *tmp_channel;
 859         enum nl80211_channel_type tmp_channel_type;
 860
 861         /* SNMP counters */
 862         /* dot11CountersTable */
 863         u32 dot11TransmittedFragmentCount;
 864         u32 dot11MulticastTransmittedFrameCount;
 865         u32 dot11FailedCount;
 866         u32 dot11RetryCount;
 867         u32 dot11MultipleRetryCount;
 868         u32 dot11FrameDuplicateCount;
 869         u32 dot11ReceivedFragmentCount;
 870         u32 dot11MulticastReceivedFrameCount;
 871         u32 dot11TransmittedFrameCount;
 872
 873 #ifdef CONFIG_MAC80211_LEDS
 874         int tx_led_counter, rx_led_counter;
 875         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 876         struct tpt_led_trigger *tpt_led_trigger;
 877         char tx_led_name[32], rx_led_name[32],
 878              assoc_led_name[32], radio_led_name[32];
 879 #endif
 880
 881 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 882         /* TX/RX handler statistics */
 883         unsigned int tx_handlers_drop;
 884         unsigned int tx_handlers_queued;
 885         unsigned int tx_handlers_drop_unencrypted;
 886         unsigned int tx_handlers_drop_fragment;
 887         unsigned int tx_handlers_drop_wep;
 888         unsigned int tx_handlers_drop_not_assoc;
 889         unsigned int tx_handlers_drop_unauth_port;
 890         unsigned int rx_handlers_drop;
 891         unsigned int rx_handlers_queued;
 892         unsigned int rx_handlers_drop_nullfunc;
 893         unsigned int rx_handlers_drop_defrag;
 894         unsigned int rx_handlers_drop_short;
 895         unsigned int rx_handlers_drop_passive_scan;
 896         unsigned int tx_expand_skb_head;
 897         unsigned int tx_expand_skb_head_cloned;
 898         unsigned int rx_expand_skb_head;
 899         unsigned int rx_expand_skb_head2;
 900         unsigned int rx_handlers_fragments;
 901         unsigned int tx_status_drop;
 902 #define I802_DEBUG_INC(c) (c)++
 903 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 904 #define I802_DEBUG_INC(c) do { } while (0)
 905 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 906
 907
 908         int total_ps_buffered; /* total number of all buffered unicast and
 909                                 * multicast packets for power saving stations
 910                                 */
 911         int wifi_wme_noack_test;
 912         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 913
 914         /*
 915          * Bitmask of enabled u-apsd queues,
 916          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 917          * to take effect.
 918          */
 919         unsigned int uapsd_queues;
 920
 921         /*
 922          * Maximum number of buffered frames AP can deliver during a
 923          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 924          * Needs a new association to take effect.
 925          */
 926         unsigned int uapsd_max_sp_len;
 927
 928         bool pspolling;
 929         bool offchannel_ps_enabled;
 930         /*
 931          * PS can only be enabled when we have exactly one managed
 932          * interface (and monitors) in PS, this then points there.
 933          */
 934         struct ieee80211_sub_if_data *ps_sdata;
 935         struct work_struct dynamic_ps_enable_work;
 936         struct work_struct dynamic_ps_disable_work;
 937         struct timer_list dynamic_ps_timer;
 938         struct notifier_block network_latency_notifier;
 939         struct notifier_block ifa_notifier;
 940
 941         /*
 942          * The dynamic ps timeout configured from user space via WEXT -
 943          * this will override whatever chosen by mac80211 internally.
 944          */
 945         int dynamic_ps_forced_timeout;
 946         int dynamic_ps_user_timeout;
 947         bool disable_dynamic_ps;
 948
 949         int user_power_level; /* in dBm */
 950         int power_constr_level; /* in dBm */
 951
 952         enum ieee80211_smps_mode smps_mode;
 953
 954         struct work_struct restart_work;
 955
 956 #ifdef CONFIG_MAC80211_DEBUGFS
 957         struct local_debugfsdentries {
 958                 struct dentry *rcdir;
 959                 struct dentry *keys;
 960         } debugfs;
 961 #endif
 962
 963         struct ieee80211_channel *hw_roc_channel;
 964         struct net_device *hw_roc_dev;
 965         struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
 966         struct work_struct hw_roc_start, hw_roc_done;
 967         enum nl80211_channel_type hw_roc_channel_type;
 968         unsigned int hw_roc_duration;
 969         u32 hw_roc_cookie;
 970         bool hw_roc_for_tx;
 971         unsigned long hw_offchan_tx_cookie;
 972
 973         /* dummy netdev for use w/ NAPI */
 974         struct net_device napi_dev;
 975
 976         struct napi_struct napi;
 977 };
 978
 979 static inline struct ieee80211_sub_if_data *
 980 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 981 {
 982         return netdev_priv(dev);
 983 }
 984
 985 /* this struct represents 802.11n's RA/TID combination */
 986 struct ieee80211_ra_tid {
 987         u8 ra[ETH_ALEN];
 988         u16 tid;
 989 };
 990
 991 /* Parsed Information Elements */
 992 struct ieee802_11_elems {
 993         u8 *ie_start;
 994         size_t total_len;
 995
 996         /* pointers to IEs */
 997         u8 *ssid;
 998         u8 *supp_rates;
 999         u8 *fh_params;
1000         u8 *ds_params;
1001         u8 *cf_params;
1002         struct ieee80211_tim_ie *tim;
1003         u8 *ibss_params;
1004         u8 *challenge;
1005         u8 *wpa;
1006         u8 *rsn;
1007         u8 *erp_info;
1008         u8 *ext_supp_rates;
1009         u8 *wmm_info;
1010         u8 *wmm_param;
1011         struct ieee80211_ht_cap *ht_cap_elem;
1012         struct ieee80211_ht_info *ht_info_elem;
1013         struct ieee80211_meshconf_ie *mesh_config;
1014         u8 *mesh_id;
1015         u8 *peer_link;
1016         u8 *preq;
1017         u8 *prep;
1018         u8 *perr;
1019         struct ieee80211_rann_ie *rann;
1020         u8 *ch_switch_elem;
1021         u8 *country_elem;
1022         u8 *pwr_constr_elem;
1023         u8 *quiet_elem;         /* first quite element */
1024         u8 *timeout_int;
1025
1026         /* length of them, respectively */
1027         u8 ssid_len;
1028         u8 supp_rates_len;
1029         u8 fh_params_len;
1030         u8 ds_params_len;
1031         u8 cf_params_len;
1032         u8 tim_len;
1033         u8 ibss_params_len;
1034         u8 challenge_len;
1035         u8 wpa_len;
1036         u8 rsn_len;
1037         u8 erp_info_len;
1038         u8 ext_supp_rates_len;
1039         u8 wmm_info_len;
1040         u8 wmm_param_len;
1041         u8 mesh_id_len;
1042         u8 peer_link_len;
1043         u8 preq_len;
1044         u8 prep_len;
1045         u8 perr_len;
1046         u8 ch_switch_elem_len;
1047         u8 country_elem_len;
1048         u8 pwr_constr_elem_len;
1049         u8 quiet_elem_len;
1050         u8 num_of_quiet_elem;   /* can be more the one */
1051         u8 timeout_int_len;
1052 };
1053
1054 static inline struct ieee80211_local *hw_to_local(
1055         struct ieee80211_hw *hw)
1056 {
1057         return container_of(hw, struct ieee80211_local, hw);
1058 }
1059
1060 static inline struct ieee80211_hw *local_to_hw(
1061         struct ieee80211_local *local)
1062 {
1063         return &local->hw;
1064 }
1065
1066
1067 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1068 {
1069         return compare_ether_addr(raddr, addr) == 0 ||
1070                is_broadcast_ether_addr(raddr);
1071 }
1072
1073
1074 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1075 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1076 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1077                                       u32 changed);
1078 void ieee80211_configure_filter(struct ieee80211_local *local);
1079 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1080
1081 /* STA code */
1082 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1083 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1084                        struct cfg80211_auth_request *req);
1085 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1086                         struct cfg80211_assoc_request *req);
1087 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1088                          struct cfg80211_deauth_request *req,
1089                          void *cookie);
1090 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1091                            struct cfg80211_disassoc_request *req,
1092                            void *cookie);
1093 void ieee80211_send_pspoll(struct ieee80211_local *local,
1094                            struct ieee80211_sub_if_data *sdata);
1095 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1096 int ieee80211_max_network_latency(struct notifier_block *nb,
1097                                   unsigned long data, void *dummy);
1098 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1099 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1100                                       struct ieee80211_channel_sw_ie *sw_elem,
1101                                       struct ieee80211_bss *bss,
1102                                       u64 timestamp);
1103 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1104 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1105 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1106 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1107                                   struct sk_buff *skb);
1108 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1109 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1110
1111 /* IBSS code */
1112 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1113 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1114 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1115                                         u8 *bssid, u8 *addr, u32 supp_rates,
1116                                         gfp_t gfp);
1117 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1118                         struct cfg80211_ibss_params *params);
1119 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1120 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1121 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1122 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1123 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1124                                    struct sk_buff *skb);
1125
1126 /* mesh code */
1127 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1128 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1129                                    struct sk_buff *skb);
1130
1131 /* scan/BSS handling */
1132 void ieee80211_scan_work(struct work_struct *work);
1133 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1134                                     const u8 *ssid, u8 ssid_len,
1135                                     struct ieee80211_channel *chan);
1136 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1137                            struct cfg80211_scan_request *req);
1138 void ieee80211_scan_cancel(struct ieee80211_local *local);
1139 ieee80211_rx_result
1140 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1141
1142 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1143 struct ieee80211_bss *
1144 ieee80211_bss_info_update(struct ieee80211_local *local,
1145                           struct ieee80211_rx_status *rx_status,
1146                           struct ieee80211_mgmt *mgmt,
1147                           size_t len,
1148                           struct ieee802_11_elems *elems,
1149                           struct ieee80211_channel *channel,
1150                           bool beacon);
1151 struct ieee80211_bss *
1152 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1153                      u8 *ssid, u8 ssid_len);
1154 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1155                           struct ieee80211_bss *bss);
1156
1157 /* off-channel helpers */
1158 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local);
1159 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local,
1160                                         bool tell_ap);
1161 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1162                                     bool offchannel_ps_enable);
1163 void ieee80211_offchannel_return(struct ieee80211_local *local,
1164                                  bool enable_beaconing,
1165                                  bool offchannel_ps_disable);
1166 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1167
1168 /* interface handling */
1169 int ieee80211_iface_init(void);
1170 void ieee80211_iface_exit(void);
1171 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1172                      struct net_device **new_dev, enum nl80211_iftype type,
1173                      struct vif_params *params);
1174 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1175                              enum nl80211_iftype type);
1176 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1177 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1178 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1179 void ieee80211_recalc_idle(struct ieee80211_local *local);
1180 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1181                                     const int offset);
1182
1183 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1184 {
1185         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1186 }
1187
1188 /* tx handling */
1189 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1190 void ieee80211_tx_pending(unsigned long data);
1191 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1192                                          struct net_device *dev);
1193 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1194                                        struct net_device *dev);
1195
1196 /*
1197  * radiotap header for status frames
1198  */
1199 struct ieee80211_tx_status_rtap_hdr {
1200         struct ieee80211_radiotap_header hdr;
1201         u8 rate;
1202         u8 padding_for_rate;
1203         __le16 tx_flags;
1204         u8 data_retries;
1205 } __packed;
1206
1207
1208 /* HT */
1209 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1210                                        struct ieee80211_ht_cap *ht_cap_ie,
1211                                        struct ieee80211_sta_ht_cap *ht_cap);
1212 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1213 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1214                           const u8 *da, u16 tid,
1215                           u16 initiator, u16 reason_code);
1216 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1217                                enum ieee80211_smps_mode smps, const u8 *da,
1218                                const u8 *bssid);
1219 void ieee80211_request_smps_work(struct work_struct *work);
1220
1221 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1222                                      u16 initiator, u16 reason, bool stop);
1223 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1224                                     u16 initiator, u16 reason, bool stop);
1225 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1226 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1227                              struct sta_info *sta,
1228                              struct ieee80211_mgmt *mgmt, size_t len);
1229 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1230                                   struct sta_info *sta,
1231                                   struct ieee80211_mgmt *mgmt,
1232                                   size_t len);
1233 void ieee80211_process_addba_request(struct ieee80211_local *local,
1234                                      struct sta_info *sta,
1235                                      struct ieee80211_mgmt *mgmt,
1236                                      size_t len);
1237
1238 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1239                                    enum ieee80211_back_parties initiator,
1240                                    bool tx);
1241 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1242                                     enum ieee80211_back_parties initiator,
1243                                     bool tx);
1244 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1245 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1246 void ieee80211_ba_session_work(struct work_struct *work);
1247 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1248 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1249
1250 /* Spectrum management */
1251 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1252                                        struct ieee80211_mgmt *mgmt,
1253                                        size_t len);
1254
1255 /* Suspend/resume and hw reconfiguration */
1256 int ieee80211_reconfig(struct ieee80211_local *local);
1257 void ieee80211_stop_device(struct ieee80211_local *local);
1258
1259 #ifdef CONFIG_PM
1260 int __ieee80211_suspend(struct ieee80211_hw *hw,
1261                         struct cfg80211_wowlan *wowlan);
1262
1263 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1264 {
1265         struct ieee80211_local *local = hw_to_local(hw);
1266
1267         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1268                 "%s: resume with hardware scan still in progress\n",
1269                 wiphy_name(hw->wiphy));
1270
1271         return ieee80211_reconfig(hw_to_local(hw));
1272 }
1273 #else
1274 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1275                                       struct cfg80211_wowlan *wowlan)
1276 {
1277         return 0;
1278 }
1279
1280 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1281 {
1282         return 0;
1283 }
1284 #endif
1285
1286 /* utility functions/constants */
1287 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1288 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1289                         enum nl80211_iftype type);
1290 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1291                              int rate, int erp, int short_preamble);
1292 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1293                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1294                                      gfp_t gfp);
1295 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1296 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1297 void ieee802_11_parse_elems(u8 *start, size_t len,
1298                             struct ieee802_11_elems *elems);
1299 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1300                                struct ieee802_11_elems *elems,
1301                                u64 filter, u32 crc);
1302 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1303                               enum ieee80211_band band);
1304
1305 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1306 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1307 void ieee80211_dynamic_ps_timer(unsigned long data);
1308 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1309                              struct ieee80211_sub_if_data *sdata,
1310                              int powersave);
1311 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1312                              struct ieee80211_hdr *hdr);
1313 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1314                              struct ieee80211_hdr *hdr, bool ack);
1315 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1316
1317 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1318                                      enum queue_stop_reason reason);
1319 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1320                                      enum queue_stop_reason reason);
1321 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1322                                     enum queue_stop_reason reason);
1323 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1324                                     enum queue_stop_reason reason);
1325 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1326                                struct sk_buff *skb);
1327 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1328                                struct sk_buff_head *skbs);
1329 int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1330                                   struct sk_buff_head *skbs,
1331                                   void (*fn)(void *data), void *data);
1332
1333 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1334                          u16 transaction, u16 auth_alg,
1335                          u8 *extra, size_t extra_len, const u8 *bssid,
1336                          const u8 *key, u8 key_len, u8 key_idx);
1337 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1338                              const u8 *ie, size_t ie_len,
1339                              enum ieee80211_band band, u32 rate_mask,
1340                              u8 channel);
1341 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1342                                           u8 *dst,
1343                                           const u8 *ssid, size_t ssid_len,
1344                                           const u8 *ie, size_t ie_len);
1345 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1346                               const u8 *ssid, size_t ssid_len,
1347                               const u8 *ie, size_t ie_len);
1348
1349 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1350                                   const size_t supp_rates_len,
1351                                   const u8 *supp_rates);
1352 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1353                             struct ieee802_11_elems *elems,
1354                             enum ieee80211_band band);
1355 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1356                              enum ieee80211_smps_mode smps_mode);
1357 void ieee80211_recalc_smps(struct ieee80211_local *local);
1358
1359 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1360                           const u8 *ids, int n_ids, size_t offset);
1361 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1362
1363 /* internal work items */
1364 void ieee80211_work_init(struct ieee80211_local *local);
1365 void ieee80211_add_work(struct ieee80211_work *wk);
1366 void free_work(struct ieee80211_work *wk);
1367 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1368 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1369                                            struct sk_buff *skb);
1370 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1371                                    struct ieee80211_channel *chan,
1372                                    enum nl80211_channel_type channel_type,
1373                                    unsigned int duration, u64 *cookie);
1374 int ieee80211_wk_cancel_remain_on_channel(
1375         struct ieee80211_sub_if_data *sdata, u64 cookie);
1376
1377 /* channel management */
1378 enum ieee80211_chan_mode {
1379         CHAN_MODE_UNDEFINED,
1380         CHAN_MODE_HOPPING,
1381         CHAN_MODE_FIXED,
1382 };
1383
1384 enum ieee80211_chan_mode
1385 ieee80211_get_channel_mode(struct ieee80211_local *local,
1386                            struct ieee80211_sub_if_data *ignore);
1387 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1388                                 struct ieee80211_sub_if_data *sdata,
1389                                 enum nl80211_channel_type chantype);
1390
1391 #ifdef CONFIG_MAC80211_NOINLINE
1392 #define debug_noinline noinline
1393 #else
1394 #define debug_noinline
1395 #endif
1396
1397 #endif /* IEEE80211_I_H */