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 association, 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
 206         /*
 207          * Index into sequence numbers array, 0..16
 208          * since the last (16) is used for non-QoS,
 209          * will be 16 on non-QoS frames.
 210          */
 211         int seqno_idx;
 212
 213         /*
 214          * Index into the security IV/PN arrays, 0..16
 215          * since the last (16) is used for CCMP-encrypted
 216          * management frames, will be set to 16 on mgmt
 217          * frames and 0 on non-QoS frames.
 218          */
 219         int security_idx;
 220
 221         u32 tkip_iv32;
 222         u16 tkip_iv16;
 223 };
 224
 225 struct beacon_data {
 226         u8 *head, *tail;
 227         int head_len, tail_len;
 228         int dtim_period;
 229 };
 230
 231 struct ieee80211_if_ap {
 232         struct beacon_data __rcu *beacon;
 233
 234         struct list_head vlans;
 235
 236         /* yes, this looks ugly, but guarantees that we can later use
 237          * bitmap_empty :)
 238          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 239         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 240         struct sk_buff_head ps_bc_buf;
 241         atomic_t num_sta_ps; /* number of stations in PS mode */
 242         int dtim_count;
 243         bool dtim_bc_mc;
 244 };
 245
 246 struct ieee80211_if_wds {
 247         struct sta_info *sta;
 248         u8 remote_addr[ETH_ALEN];
 249 };
 250
 251 struct ieee80211_if_vlan {
 252         struct list_head list;
 253
 254         /* used for all tx if the VLAN is configured to 4-addr mode */
 255         struct sta_info __rcu *sta;
 256 };
 257
 258 struct mesh_stats {
 259         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 260         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 261         __u32 fwded_frames;             /* Mesh total forwarded frames */
 262         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 263         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 264         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 265         atomic_t estab_plinks;
 266 };
 267
 268 #define PREQ_Q_F_START          0x1
 269 #define PREQ_Q_F_REFRESH        0x2
 270 struct mesh_preq_queue {
 271         struct list_head list;
 272         u8 dst[ETH_ALEN];
 273         u8 flags;
 274 };
 275
 276 enum ieee80211_work_type {
 277         IEEE80211_WORK_ABORT,
 278         IEEE80211_WORK_DIRECT_PROBE,
 279         IEEE80211_WORK_AUTH,
 280         IEEE80211_WORK_ASSOC_BEACON_WAIT,
 281         IEEE80211_WORK_ASSOC,
 282         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 283         IEEE80211_WORK_OFFCHANNEL_TX,
 284 };
 285
 286 /**
 287  * enum work_done_result - indicates what to do after work was done
 288  *
 289  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 290  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 291  *      should be requeued.
 292  */
 293 enum work_done_result {
 294         WORK_DONE_DESTROY,
 295         WORK_DONE_REQUEUE,
 296 };
 297
 298 struct ieee80211_work {
 299         struct list_head list;
 300
 301         struct rcu_head rcu_head;
 302
 303         struct ieee80211_sub_if_data *sdata;
 304
 305         enum work_done_result (*done)(struct ieee80211_work *wk,
 306                                       struct sk_buff *skb);
 307
 308         struct ieee80211_channel *chan;
 309         enum nl80211_channel_type chan_type;
 310
 311         unsigned long timeout;
 312         enum ieee80211_work_type type;
 313
 314         u8 filter_ta[ETH_ALEN];
 315
 316         bool started;
 317
 318         union {
 319                 struct {
 320                         int tries;
 321                         u16 algorithm, transaction;
 322                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 323                         u8 ssid_len;
 324                         u8 key[WLAN_KEY_LEN_WEP104];
 325                         u8 key_len, key_idx;
 326                         bool privacy;
 327                         bool synced;
 328                 } probe_auth;
 329                 struct {
 330                         struct cfg80211_bss *bss;
 331                         const u8 *supp_rates;
 332                         const u8 *ht_information_ie;
 333                         enum ieee80211_smps_mode smps;
 334                         int tries;
 335                         u16 capability;
 336                         u8 prev_bssid[ETH_ALEN];
 337                         u8 ssid[IEEE80211_MAX_SSID_LEN];
 338                         u8 ssid_len;
 339                         u8 supp_rates_len;
 340                         bool wmm_used, use_11n, uapsd_used;
 341                         bool synced;
 342                 } assoc;
 343                 struct {
 344                         u32 duration;
 345                 } remain;
 346                 struct {
 347                         struct sk_buff *frame;
 348                         u32 wait;
 349                 } offchan_tx;
 350         };
 351
 352         int ie_len;
 353         /* must be last */
 354         u8 ie[0];
 355 };
 356
 357 /* flags used in struct ieee80211_if_managed.flags */
 358 enum ieee80211_sta_flags {
 359         IEEE80211_STA_BEACON_POLL       = BIT(0),
 360         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 361         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 362         IEEE80211_STA_DISABLE_11N       = BIT(4),
 363         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 364         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 365         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 366         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 367         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 368 };
 369
 370 struct ieee80211_if_managed {
 371         struct timer_list timer;
 372         struct timer_list conn_mon_timer;
 373         struct timer_list bcn_mon_timer;
 374         struct timer_list chswitch_timer;
 375         struct work_struct monitor_work;
 376         struct work_struct chswitch_work;
 377         struct work_struct beacon_connection_loss_work;
 378
 379         unsigned long beacon_timeout;
 380         unsigned long probe_timeout;
 381         int probe_send_count;
 382         bool nullfunc_failed;
 383
 384         struct mutex mtx;
 385         struct cfg80211_bss *associated;
 386
 387         u8 bssid[ETH_ALEN];
 388
 389         u16 aid;
 390
 391         unsigned long timers_running; /* used for quiesce/restart */
 392         bool powersave; /* powersave requested for this iface */
 393         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 394                                  ap_smps, /* smps mode AP thinks we're in */
 395                                  driver_smps_mode; /* smps mode request */
 396
 397         struct work_struct request_smps_work;
 398
 399         unsigned int flags;
 400
 401         bool beacon_crc_valid;
 402         u32 beacon_crc;
 403
 404         enum {
 405                 IEEE80211_MFP_DISABLED,
 406                 IEEE80211_MFP_OPTIONAL,
 407                 IEEE80211_MFP_REQUIRED
 408         } mfp; /* management frame protection */
 409
 410         int wmm_last_param_set;
 411
 412         u8 use_4addr;
 413
 414         /* Signal strength from the last Beacon frame in the current BSS. */
 415         int last_beacon_signal;
 416
 417         /*
 418          * Weighted average of the signal strength from Beacon frames in the
 419          * current BSS. This is in units of 1/16 of the signal unit to maintain
 420          * accuracy and to speed up calculations, i.e., the value need to be
 421          * divided by 16 to get the actual value.
 422          */
 423         int ave_beacon_signal;
 424
 425         /*
 426          * Number of Beacon frames used in ave_beacon_signal. This can be used
 427          * to avoid generating less reliable cqm events that would be based
 428          * only on couple of received frames.
 429          */
 430         unsigned int count_beacon_signal;
 431
 432         /*
 433          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 434          * that triggered a cqm event. 0 indicates that no event has been
 435          * generated for the current association.
 436          */
 437         int last_cqm_event_signal;
 438
 439         /*
 440          * State variables for keeping track of RSSI of the AP currently
 441          * connected to and informing driver when RSSI has gone
 442          * below/above a certain threshold.
 443          */
 444         int rssi_min_thold, rssi_max_thold;
 445         int last_ave_beacon_signal;
 446 };
 447
 448 struct ieee80211_if_ibss {
 449         struct timer_list timer;
 450
 451         struct mutex mtx;
 452
 453         unsigned long last_scan_completed;
 454
 455         u32 basic_rates;
 456
 457         bool timer_running;
 458
 459         bool fixed_bssid;
 460         bool fixed_channel;
 461         bool privacy;
 462
 463         u8 bssid[ETH_ALEN];
 464         u8 ssid[IEEE80211_MAX_SSID_LEN];
 465         u8 ssid_len, ie_len;
 466         u8 *ie;
 467         struct ieee80211_channel *channel;
 468
 469         unsigned long ibss_join_req;
 470         /* probe response/beacon for IBSS */
 471         struct sk_buff __rcu *presp;
 472         struct sk_buff *skb;
 473
 474         enum {
 475                 IEEE80211_IBSS_MLME_SEARCH,
 476                 IEEE80211_IBSS_MLME_JOINED,
 477         } state;
 478 };
 479
 480 struct ieee80211_if_mesh {
 481         struct timer_list housekeeping_timer;
 482         struct timer_list mesh_path_timer;
 483         struct timer_list mesh_path_root_timer;
 484
 485         unsigned long timers_running;
 486
 487         unsigned long wrkq_flags;
 488
 489         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 490         size_t mesh_id_len;
 491         /* Active Path Selection Protocol Identifier */
 492         u8 mesh_pp_id;
 493         /* Active Path Selection Metric Identifier */
 494         u8 mesh_pm_id;
 495         /* Congestion Control Mode Identifier */
 496         u8 mesh_cc_id;
 497         /* Synchronization Protocol Identifier */
 498         u8 mesh_sp_id;
 499         /* Authentication Protocol Identifier */
 500         u8 mesh_auth_id;
 501         /* Local mesh Sequence Number */
 502         u32 sn;
 503         /* Last used PREQ ID */
 504         u32 preq_id;
 505         atomic_t mpaths;
 506         /* Timestamp of last SN update */
 507         unsigned long last_sn_update;
 508         /* Timestamp of last SN sent */
 509         unsigned long last_preq;
 510         struct mesh_rmc *rmc;
 511         spinlock_t mesh_preq_queue_lock;
 512         struct mesh_preq_queue preq_queue;
 513         int preq_queue_len;
 514         struct mesh_stats mshstats;
 515         struct mesh_config mshcfg;
 516         u32 mesh_seqnum;
 517         bool accepting_plinks;
 518         int num_gates;
 519         const u8 *ie;
 520         u8 ie_len;
 521         enum {
 522                 IEEE80211_MESH_SEC_NONE = 0x0,
 523                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 524                 IEEE80211_MESH_SEC_SECURED = 0x2,
 525         } security;
 526 };
 527
 528 #ifdef CONFIG_MAC80211_MESH
 529 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 530         do { (msh)->mshstats.name++; } while (0)
 531 #else
 532 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 533         do { } while (0)
 534 #endif
 535
 536 /**
 537  * enum ieee80211_sub_if_data_flags - virtual interface flags
 538  *
 539  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 540  * @IEEE80211_SDATA_PROMISC: interface is promisc
 541  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 542  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 543  *      associated stations and deliver multicast frames both
 544  *      back to wireless media and to the local net stack.
 545  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 546  */
 547 enum ieee80211_sub_if_data_flags {
 548         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 549         IEEE80211_SDATA_PROMISC                 = BIT(1),
 550         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 551         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 552         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 553 };
 554
 555 /**
 556  * enum ieee80211_sdata_state_bits - virtual interface state bits
 557  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 558  *      mirrors netif_running() but is separate for interface type
 559  *      change handling while the interface is up
 560  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 561  *      mode, so queues are stopped
 562  */
 563 enum ieee80211_sdata_state_bits {
 564         SDATA_STATE_RUNNING,
 565         SDATA_STATE_OFFCHANNEL,
 566 };
 567
 568 struct ieee80211_sub_if_data {
 569         struct list_head list;
 570
 571         struct wireless_dev wdev;
 572
 573         /* keys */
 574         struct list_head key_list;
 575
 576         /* count for keys needing tailroom space allocation */
 577         int crypto_tx_tailroom_needed_cnt;
 578
 579         struct net_device *dev;
 580         struct ieee80211_local *local;
 581
 582         unsigned int flags;
 583
 584         unsigned long state;
 585
 586         int drop_unencrypted;
 587
 588         char name[IFNAMSIZ];
 589
 590         /*
 591          * keep track of whether the HT opmode (stored in
 592          * vif.bss_info.ht_operation_mode) is valid.
 593          */
 594         bool ht_opmode_valid;
 595
 596         /* to detect idle changes */
 597         bool old_idle;
 598
 599         /* Fragment table for host-based reassembly */
 600         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 601         unsigned int fragment_next;
 602
 603         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 604         struct ieee80211_key __rcu *default_unicast_key;
 605         struct ieee80211_key __rcu *default_multicast_key;
 606         struct ieee80211_key __rcu *default_mgmt_key;
 607
 608         u16 sequence_number;
 609         __be16 control_port_protocol;
 610         bool control_port_no_encrypt;
 611
 612         struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
 613
 614         struct work_struct work;
 615         struct sk_buff_head skb_queue;
 616
 617         bool arp_filter_state;
 618
 619         /*
 620          * AP this belongs to: self in AP mode and
 621          * corresponding AP in VLAN mode, NULL for
 622          * all others (might be needed later in IBSS)
 623          */
 624         struct ieee80211_if_ap *bss;
 625
 626         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 627         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 628
 629         union {
 630                 struct ieee80211_if_ap ap;
 631                 struct ieee80211_if_wds wds;
 632                 struct ieee80211_if_vlan vlan;
 633                 struct ieee80211_if_managed mgd;
 634                 struct ieee80211_if_ibss ibss;
 635                 struct ieee80211_if_mesh mesh;
 636                 u32 mntr_flags;
 637         } u;
 638
 639 #ifdef CONFIG_MAC80211_DEBUGFS
 640         struct {
 641                 struct dentry *dir;
 642                 struct dentry *subdir_stations;
 643                 struct dentry *default_unicast_key;
 644                 struct dentry *default_multicast_key;
 645                 struct dentry *default_mgmt_key;
 646         } debugfs;
 647 #endif
 648         /* must be last, dynamically sized area in this! */
 649         struct ieee80211_vif vif;
 650 };
 651
 652 static inline
 653 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 654 {
 655         return container_of(p, struct ieee80211_sub_if_data, vif);
 656 }
 657
 658 enum sdata_queue_type {
 659         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 660         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 661         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 662 };
 663
 664 enum {
 665         IEEE80211_RX_MSG        = 1,
 666         IEEE80211_TX_STATUS_MSG = 2,
 667 };
 668
 669 enum queue_stop_reason {
 670         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 671         IEEE80211_QUEUE_STOP_REASON_PS,
 672         IEEE80211_QUEUE_STOP_REASON_CSA,
 673         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 674         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 675         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 676         IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE,
 677 };
 678
 679 #ifdef CONFIG_MAC80211_LEDS
 680 struct tpt_led_trigger {
 681         struct led_trigger trig;
 682         char name[32];
 683         const struct ieee80211_tpt_blink *blink_table;
 684         unsigned int blink_table_len;
 685         struct timer_list timer;
 686         unsigned long prev_traffic;
 687         unsigned long tx_bytes, rx_bytes;
 688         unsigned int active, want;
 689         bool running;
 690 };
 691 #endif
 692
 693 /**
 694  * mac80211 scan flags - currently active scan mode
 695  *
 696  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 697  *      well be on the operating channel
 698  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 699  *      determine if we are on the operating channel or not
 700  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 701  *      that the scan completed.
 702  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 703  *      a scan complete for an aborted scan.
 704  */
 705 enum {
 706         SCAN_SW_SCANNING,
 707         SCAN_HW_SCANNING,
 708         SCAN_COMPLETED,
 709         SCAN_ABORTED,
 710 };
 711
 712 /**
 713  * enum mac80211_scan_state - scan state machine states
 714  *
 715  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 716  *      determines if we should keep on scanning or switch back to the
 717  *      operating channel
 718  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 719  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 720  * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 721  *      about us leaving the channel and stop all associated STA interfaces
 722  * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 723  *      AP about us being back and restart all associated STA interfaces
 724  */
 725 enum mac80211_scan_state {
 726         SCAN_DECISION,
 727         SCAN_SET_CHANNEL,
 728         SCAN_SEND_PROBE,
 729         SCAN_LEAVE_OPER_CHANNEL,
 730         SCAN_ENTER_OPER_CHANNEL,
 731 };
 732
 733 struct ieee80211_local {
 734         /* embed the driver visible part.
 735          * don't cast (use the static inlines below), but we keep
 736          * it first anyway so they become a no-op */
 737         struct ieee80211_hw hw;
 738
 739         const struct ieee80211_ops *ops;
 740
 741         /*
 742          * work stuff, potentially off-channel (in the future)
 743          */
 744         struct list_head work_list;
 745         struct timer_list work_timer;
 746         struct work_struct work_work;
 747         struct sk_buff_head work_skb_queue;
 748
 749         /*
 750          * private workqueue to mac80211. mac80211 makes this accessible
 751          * via ieee80211_queue_work()
 752          */
 753         struct workqueue_struct *workqueue;
 754
 755         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 756         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 757         spinlock_t queue_stop_reason_lock;
 758
 759         int open_count;
 760         int monitors, cooked_mntrs;
 761         /* number of interfaces with corresponding FIF_ flags */
 762         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 763             fif_probe_req;
 764         int probe_req_reg;
 765         unsigned int filter_flags; /* FIF_* */
 766
 767         bool wiphy_ciphers_allocated;
 768
 769         /* protects the aggregated multicast list and filter calls */
 770         spinlock_t filter_lock;
 771
 772         /* used for uploading changed mc list */
 773         struct work_struct reconfig_filter;
 774
 775         /* used to reconfigure hardware SM PS */
 776         struct work_struct recalc_smps;
 777
 778         /* aggregated multicast list */
 779         struct netdev_hw_addr_list mc_list;
 780
 781         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 782
 783         /*
 784          * suspended is true if we finished all the suspend _and_ we have
 785          * not yet come up from resume. This is to be used by mac80211
 786          * to ensure driver sanity during suspend and mac80211's own
 787          * sanity. It can eventually be used for WoW as well.
 788          */
 789         bool suspended;
 790
 791         /*
 792          * Resuming is true while suspended, but when we're reprogramming the
 793          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 794          * again even though some other parts of the stack are still suspended
 795          * and we still drop received frames to avoid waking the stack.
 796          */
 797         bool resuming;
 798
 799         /*
 800          * quiescing is true during the suspend process _only_ to
 801          * ease timer cancelling etc.
 802          */
 803         bool quiescing;
 804
 805         /* device is started */
 806         bool started;
 807
 808         /* wowlan is enabled -- don't reconfig on resume */
 809         bool wowlan;
 810
 811         int tx_headroom; /* required headroom for hardware/radiotap */
 812
 813         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 814          * added to skb_queue will be processed, but frames in
 815          * skb_queue_unreliable may be dropped if the total length of these
 816          * queues increases over the limit. */
 817 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 818         struct tasklet_struct tasklet;
 819         struct sk_buff_head skb_queue;
 820         struct sk_buff_head skb_queue_unreliable;
 821
 822         /*
 823          * Internal FIFO queue which is shared between multiple rx path
 824          * stages. Its main task is to provide a serialization mechanism,
 825          * so all rx handlers can enjoy having exclusive access to their
 826          * private data structures.
 827          */
 828         struct sk_buff_head rx_skb_queue;
 829         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 830
 831         /* Station data */
 832         /*
 833          * The mutex only protects the list and counter,
 834          * reads are done in RCU.
 835          * Additionally, the lock protects the hash table,
 836          * the pending list and each BSS's TIM bitmap.
 837          */
 838         struct mutex sta_mtx;
 839         spinlock_t sta_lock;
 840         unsigned long num_sta;
 841         struct list_head sta_list, sta_pending_list;
 842         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
 843         struct timer_list sta_cleanup;
 844         struct work_struct sta_finish_work;
 845         int sta_generation;
 846
 847         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 848         struct tasklet_struct tx_pending_tasklet;
 849
 850         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 851
 852         /* number of interfaces with corresponding IFF_ flags */
 853         atomic_t iff_allmultis, iff_promiscs;
 854
 855         struct rate_control_ref *rate_ctrl;
 856
 857         struct crypto_cipher *wep_tx_tfm;
 858         struct crypto_cipher *wep_rx_tfm;
 859         u32 wep_iv;
 860
 861         /* see iface.c */
 862         struct list_head interfaces;
 863         struct mutex iflist_mtx;
 864
 865         /*
 866          * Key mutex, protects sdata's key_list and sta_info's
 867          * key pointers (write access, they're RCU.)
 868          */
 869         struct mutex key_mtx;
 870
 871         /* mutex for scan and work locking */
 872         struct mutex mtx;
 873
 874         /* Scanning and BSS list */
 875         unsigned long scanning;
 876         struct cfg80211_ssid scan_ssid;
 877         struct cfg80211_scan_request *int_scan_req;
 878         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 879         struct ieee80211_channel *scan_channel;
 880         enum ieee80211_band hw_scan_band;
 881         int scan_channel_idx;
 882         int scan_ies_len;
 883
 884         bool sched_scanning;
 885         struct ieee80211_sched_scan_ies sched_scan_ies;
 886         struct work_struct sched_scan_stopped_work;
 887
 888         unsigned long leave_oper_channel_time;
 889         enum mac80211_scan_state next_scan_state;
 890         struct delayed_work scan_work;
 891         struct ieee80211_sub_if_data *scan_sdata;
 892         enum nl80211_channel_type _oper_channel_type;
 893         struct ieee80211_channel *oper_channel, *csa_channel;
 894
 895         /* Temporary remain-on-channel for off-channel operations */
 896         struct ieee80211_channel *tmp_channel;
 897         enum nl80211_channel_type tmp_channel_type;
 898
 899         /* SNMP counters */
 900         /* dot11CountersTable */
 901         u32 dot11TransmittedFragmentCount;
 902         u32 dot11MulticastTransmittedFrameCount;
 903         u32 dot11FailedCount;
 904         u32 dot11RetryCount;
 905         u32 dot11MultipleRetryCount;
 906         u32 dot11FrameDuplicateCount;
 907         u32 dot11ReceivedFragmentCount;
 908         u32 dot11MulticastReceivedFrameCount;
 909         u32 dot11TransmittedFrameCount;
 910
 911 #ifdef CONFIG_MAC80211_LEDS
 912         int tx_led_counter, rx_led_counter;
 913         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 914         struct tpt_led_trigger *tpt_led_trigger;
 915         char tx_led_name[32], rx_led_name[32],
 916              assoc_led_name[32], radio_led_name[32];
 917 #endif
 918
 919 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 920         /* TX/RX handler statistics */
 921         unsigned int tx_handlers_drop;
 922         unsigned int tx_handlers_queued;
 923         unsigned int tx_handlers_drop_unencrypted;
 924         unsigned int tx_handlers_drop_fragment;
 925         unsigned int tx_handlers_drop_wep;
 926         unsigned int tx_handlers_drop_not_assoc;
 927         unsigned int tx_handlers_drop_unauth_port;
 928         unsigned int rx_handlers_drop;
 929         unsigned int rx_handlers_queued;
 930         unsigned int rx_handlers_drop_nullfunc;
 931         unsigned int rx_handlers_drop_defrag;
 932         unsigned int rx_handlers_drop_short;
 933         unsigned int rx_handlers_drop_passive_scan;
 934         unsigned int tx_expand_skb_head;
 935         unsigned int tx_expand_skb_head_cloned;
 936         unsigned int rx_expand_skb_head;
 937         unsigned int rx_expand_skb_head2;
 938         unsigned int rx_handlers_fragments;
 939         unsigned int tx_status_drop;
 940 #define I802_DEBUG_INC(c) (c)++
 941 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 942 #define I802_DEBUG_INC(c) do { } while (0)
 943 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 944
 945
 946         int total_ps_buffered; /* total number of all buffered unicast and
 947                                 * multicast packets for power saving stations
 948                                 */
 949         int wifi_wme_noack_test;
 950         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 951
 952         /*
 953          * Bitmask of enabled u-apsd queues,
 954          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 955          * to take effect.
 956          */
 957         unsigned int uapsd_queues;
 958
 959         /*
 960          * Maximum number of buffered frames AP can deliver during a
 961          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 962          * Needs a new association to take effect.
 963          */
 964         unsigned int uapsd_max_sp_len;
 965
 966         bool pspolling;
 967         bool offchannel_ps_enabled;
 968         /*
 969          * PS can only be enabled when we have exactly one managed
 970          * interface (and monitors) in PS, this then points there.
 971          */
 972         struct ieee80211_sub_if_data *ps_sdata;
 973         struct work_struct dynamic_ps_enable_work;
 974         struct work_struct dynamic_ps_disable_work;
 975         struct timer_list dynamic_ps_timer;
 976         struct notifier_block network_latency_notifier;
 977         struct notifier_block ifa_notifier;
 978
 979         /*
 980          * The dynamic ps timeout configured from user space via WEXT -
 981          * this will override whatever chosen by mac80211 internally.
 982          */
 983         int dynamic_ps_forced_timeout;
 984         int dynamic_ps_user_timeout;
 985         bool disable_dynamic_ps;
 986
 987         int user_power_level; /* in dBm */
 988         int power_constr_level; /* in dBm */
 989
 990         enum ieee80211_smps_mode smps_mode;
 991
 992         struct work_struct restart_work;
 993
 994 #ifdef CONFIG_MAC80211_DEBUGFS
 995         struct local_debugfsdentries {
 996                 struct dentry *rcdir;
 997                 struct dentry *keys;
 998         } debugfs;
 999 #endif
1000
1001         struct ieee80211_channel *hw_roc_channel;
1002         struct net_device *hw_roc_dev;
1003         struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
1004         struct work_struct hw_roc_start, hw_roc_done;
1005         enum nl80211_channel_type hw_roc_channel_type;
1006         unsigned int hw_roc_duration;
1007         u32 hw_roc_cookie;
1008         bool hw_roc_for_tx;
1009
1010         /* dummy netdev for use w/ NAPI */
1011         struct net_device napi_dev;
1012
1013         struct napi_struct napi;
1014 };
1015
1016 static inline struct ieee80211_sub_if_data *
1017 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1018 {
1019         return netdev_priv(dev);
1020 }
1021
1022 /* this struct represents 802.11n's RA/TID combination */
1023 struct ieee80211_ra_tid {
1024         u8 ra[ETH_ALEN];
1025         u16 tid;
1026 };
1027
1028 static inline struct ieee80211_local *hw_to_local(
1029         struct ieee80211_hw *hw)
1030 {
1031         return container_of(hw, struct ieee80211_local, hw);
1032 }
1033
1034 static inline struct ieee80211_hw *local_to_hw(
1035         struct ieee80211_local *local)
1036 {
1037         return &local->hw;
1038 }
1039
1040
1041 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1042 {
1043         return compare_ether_addr(raddr, addr) == 0 ||
1044                is_broadcast_ether_addr(raddr);
1045 }
1046
1047
1048 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1049 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1050 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1051                                       u32 changed);
1052 void ieee80211_configure_filter(struct ieee80211_local *local);
1053 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1054
1055 /* STA code */
1056 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1057 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1058                        struct cfg80211_auth_request *req);
1059 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1060                         struct cfg80211_assoc_request *req);
1061 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1062                          struct cfg80211_deauth_request *req,
1063                          void *cookie);
1064 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1065                            struct cfg80211_disassoc_request *req,
1066                            void *cookie);
1067 void ieee80211_send_pspoll(struct ieee80211_local *local,
1068                            struct ieee80211_sub_if_data *sdata);
1069 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1070 int ieee80211_max_network_latency(struct notifier_block *nb,
1071                                   unsigned long data, void *dummy);
1072 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1073 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1074                                       struct ieee80211_channel_sw_ie *sw_elem,
1075                                       struct ieee80211_bss *bss,
1076                                       u64 timestamp);
1077 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1078 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1079 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1080 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1081                                   struct sk_buff *skb);
1082 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1083 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1084
1085 /* IBSS code */
1086 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1087 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1088 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1089                                         u8 *bssid, u8 *addr, u32 supp_rates,
1090                                         gfp_t gfp);
1091 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1092                         struct cfg80211_ibss_params *params);
1093 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1094 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1095 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1096 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1097 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1098                                    struct sk_buff *skb);
1099
1100 /* mesh code */
1101 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1102 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1103                                    struct sk_buff *skb);
1104
1105 /* scan/BSS handling */
1106 void ieee80211_scan_work(struct work_struct *work);
1107 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1108                                     const u8 *ssid, u8 ssid_len,
1109                                     struct ieee80211_channel *chan);
1110 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1111                            struct cfg80211_scan_request *req);
1112 void ieee80211_scan_cancel(struct ieee80211_local *local);
1113 ieee80211_rx_result
1114 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1115
1116 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1117 struct ieee80211_bss *
1118 ieee80211_bss_info_update(struct ieee80211_local *local,
1119                           struct ieee80211_rx_status *rx_status,
1120                           struct ieee80211_mgmt *mgmt,
1121                           size_t len,
1122                           struct ieee802_11_elems *elems,
1123                           struct ieee80211_channel *channel,
1124                           bool beacon);
1125 struct ieee80211_bss *
1126 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1127                      u8 *ssid, u8 ssid_len);
1128 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1129                           struct ieee80211_bss *bss);
1130
1131 /* scheduled scan handling */
1132 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1133                                        struct cfg80211_sched_scan_request *req);
1134 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1135 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1136
1137 /* off-channel helpers */
1138 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local);
1139 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local,
1140                                         bool tell_ap);
1141 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1142                                     bool offchannel_ps_enable);
1143 void ieee80211_offchannel_return(struct ieee80211_local *local,
1144                                  bool enable_beaconing,
1145                                  bool offchannel_ps_disable);
1146 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1147
1148 /* interface handling */
1149 int ieee80211_iface_init(void);
1150 void ieee80211_iface_exit(void);
1151 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1152                      struct net_device **new_dev, enum nl80211_iftype type,
1153                      struct vif_params *params);
1154 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1155                              enum nl80211_iftype type);
1156 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1157 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1158 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1159 void ieee80211_recalc_idle(struct ieee80211_local *local);
1160 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1161                                     const int offset);
1162
1163 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1164 {
1165         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1166 }
1167
1168 /* tx handling */
1169 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1170 void ieee80211_tx_pending(unsigned long data);
1171 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1172                                          struct net_device *dev);
1173 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1174                                        struct net_device *dev);
1175
1176 /*
1177  * radiotap header for status frames
1178  */
1179 struct ieee80211_tx_status_rtap_hdr {
1180         struct ieee80211_radiotap_header hdr;
1181         u8 rate;
1182         u8 padding_for_rate;
1183         __le16 tx_flags;
1184         u8 data_retries;
1185 } __packed;
1186
1187
1188 /* HT */
1189 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1190                                        struct ieee80211_ht_cap *ht_cap_ie,
1191                                        struct ieee80211_sta_ht_cap *ht_cap);
1192 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1193                           const u8 *da, u16 tid,
1194                           u16 initiator, u16 reason_code);
1195 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1196                                enum ieee80211_smps_mode smps, const u8 *da,
1197                                const u8 *bssid);
1198 void ieee80211_request_smps_work(struct work_struct *work);
1199
1200 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1201                                      u16 initiator, u16 reason, bool stop);
1202 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1203                                     u16 initiator, u16 reason, bool stop);
1204 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1205 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1206                              struct sta_info *sta,
1207                              struct ieee80211_mgmt *mgmt, size_t len);
1208 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1209                                   struct sta_info *sta,
1210                                   struct ieee80211_mgmt *mgmt,
1211                                   size_t len);
1212 void ieee80211_process_addba_request(struct ieee80211_local *local,
1213                                      struct sta_info *sta,
1214                                      struct ieee80211_mgmt *mgmt,
1215                                      size_t len);
1216
1217 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1218                                    enum ieee80211_back_parties initiator,
1219                                    bool tx);
1220 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1221                                     enum ieee80211_back_parties initiator,
1222                                     bool tx);
1223 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1224 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1225 void ieee80211_ba_session_work(struct work_struct *work);
1226 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1227 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1228
1229 /* Spectrum management */
1230 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1231                                        struct ieee80211_mgmt *mgmt,
1232                                        size_t len);
1233
1234 /* Suspend/resume and hw reconfiguration */
1235 int ieee80211_reconfig(struct ieee80211_local *local);
1236 void ieee80211_stop_device(struct ieee80211_local *local);
1237
1238 #ifdef CONFIG_PM
1239 int __ieee80211_suspend(struct ieee80211_hw *hw,
1240                         struct cfg80211_wowlan *wowlan);
1241
1242 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1243 {
1244         struct ieee80211_local *local = hw_to_local(hw);
1245
1246         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1247                 "%s: resume with hardware scan still in progress\n",
1248                 wiphy_name(hw->wiphy));
1249
1250         return ieee80211_reconfig(hw_to_local(hw));
1251 }
1252 #else
1253 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1254                                       struct cfg80211_wowlan *wowlan)
1255 {
1256         return 0;
1257 }
1258
1259 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1260 {
1261         return 0;
1262 }
1263 #endif
1264
1265 /* utility functions/constants */
1266 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1267 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1268                         enum nl80211_iftype type);
1269 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1270                              int rate, int erp, int short_preamble);
1271 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1272                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1273                                      gfp_t gfp);
1274 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1275 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1276 void ieee802_11_parse_elems(u8 *start, size_t len,
1277                             struct ieee802_11_elems *elems);
1278 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1279                                struct ieee802_11_elems *elems,
1280                                u64 filter, u32 crc);
1281 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1282                               enum ieee80211_band band);
1283
1284 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1285 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1286 void ieee80211_dynamic_ps_timer(unsigned long data);
1287 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1288                              struct ieee80211_sub_if_data *sdata,
1289                              int powersave);
1290 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1291                              struct ieee80211_hdr *hdr);
1292 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1293                              struct ieee80211_hdr *hdr, bool ack);
1294 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1295
1296 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1297                                      enum queue_stop_reason reason);
1298 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1299                                      enum queue_stop_reason reason);
1300 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1301                                     enum queue_stop_reason reason);
1302 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1303                                     enum queue_stop_reason reason);
1304 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1305                                struct sk_buff *skb);
1306 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1307                                 struct sk_buff_head *skbs);
1308 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1309                                    struct sk_buff_head *skbs,
1310                                    void (*fn)(void *data), void *data);
1311
1312 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1313                          u16 transaction, u16 auth_alg,
1314                          u8 *extra, size_t extra_len, const u8 *bssid,
1315                          const u8 *key, u8 key_len, u8 key_idx);
1316 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1317                              const u8 *ie, size_t ie_len,
1318                              enum ieee80211_band band, u32 rate_mask,
1319                              u8 channel);
1320 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1321                                           u8 *dst, u32 ratemask,
1322                                           const u8 *ssid, size_t ssid_len,
1323                                           const u8 *ie, size_t ie_len,
1324                                           bool directed);
1325 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1326                               const u8 *ssid, size_t ssid_len,
1327                               const u8 *ie, size_t ie_len,
1328                               u32 ratemask, bool directed, bool no_cck);
1329
1330 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1331                                   const size_t supp_rates_len,
1332                                   const u8 *supp_rates);
1333 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1334                             struct ieee802_11_elems *elems,
1335                             enum ieee80211_band band);
1336 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1337                              enum ieee80211_smps_mode smps_mode);
1338 void ieee80211_recalc_smps(struct ieee80211_local *local);
1339
1340 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1341                           const u8 *ids, int n_ids, size_t offset);
1342 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1343
1344 /* internal work items */
1345 void ieee80211_work_init(struct ieee80211_local *local);
1346 void ieee80211_add_work(struct ieee80211_work *wk);
1347 void free_work(struct ieee80211_work *wk);
1348 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1349 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1350                                            struct sk_buff *skb);
1351 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1352                                    struct ieee80211_channel *chan,
1353                                    enum nl80211_channel_type channel_type,
1354                                    unsigned int duration, u64 *cookie);
1355 int ieee80211_wk_cancel_remain_on_channel(
1356         struct ieee80211_sub_if_data *sdata, u64 cookie);
1357
1358 /* channel management */
1359 enum ieee80211_chan_mode {
1360         CHAN_MODE_UNDEFINED,
1361         CHAN_MODE_HOPPING,
1362         CHAN_MODE_FIXED,
1363 };
1364
1365 enum ieee80211_chan_mode
1366 ieee80211_get_channel_mode(struct ieee80211_local *local,
1367                            struct ieee80211_sub_if_data *ignore);
1368 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1369                                 struct ieee80211_sub_if_data *sdata,
1370                                 enum nl80211_channel_type chantype);
1371
1372 #ifdef CONFIG_MAC80211_NOINLINE
1373 #define debug_noinline noinline
1374 #else
1375 #define debug_noinline
1376 #endif
1377
1378 #endif /* IEEE80211_I_H */