net/mac80211/ieee80211_i.h

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005, Devicescape Software, Inc.
   4  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   5  * Copyright 2007-2010  Johannes Berg <johannes@sipsolutions.net>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef IEEE80211_I_H
  13 #define IEEE80211_I_H
  14
  15 #include <linux/kernel.h>
  16 #include <linux/device.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/types.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/leds.h>
  27 #include <linux/idr.h>
  28 #include <net/ieee80211_radiotap.h>
  29 #include <net/cfg80211.h>
  30 #include <net/mac80211.h>
  31 #include "key.h"
  32 #include "sta_info.h"
  33 #include "debug.h"
  34
  35 struct ieee80211_local;
  36
  37 /* Maximum number of broadcast/multicast frames to buffer when some of the
  38  * associated stations are using power saving. */
  39 #define AP_MAX_BC_BUFFER 128
  40
  41 /* Maximum number of frames buffered to all STAs, including multicast frames.
  42  * Note: increasing this limit increases the potential memory requirement. Each
  43  * frame can be up to about 2 kB long. */
  44 #define TOTAL_MAX_TX_BUFFER 512
  45
  46 /* Required encryption head and tailroom */
  47 #define IEEE80211_ENCRYPT_HEADROOM 8
  48 #define IEEE80211_ENCRYPT_TAILROOM 18
  49
  50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  51  * reception of at least three fragmented frames. This limit can be increased
  52  * by changing this define, at the cost of slower frame reassembly and
  53  * increased memory use (about 2 kB of RAM per entry). */
  54 #define IEEE80211_FRAGMENT_MAX 4
  55
  56 /* power level hasn't been configured (or set to automatic) */
  57 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  58
  59 /*
  60  * Some APs experience problems when working with U-APSD. Decrease the
  61  * probability of that happening by using legacy mode for all ACs but VO.
  62  * The AP that caused us trouble was a Cisco 4410N. It ignores our
  63  * setting, and always treats non-VO ACs as legacy.
  64  */
  65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  66         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  67
  68 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  69         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  70
  71 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  72
  73 struct ieee80211_fragment_entry {
  74         unsigned long first_frag_time;
  75         unsigned int seq;
  76         unsigned int rx_queue;
  77         unsigned int last_frag;
  78         unsigned int extra_len;
  79         struct sk_buff_head skb_list;
  80         int ccmp; /* Whether fragments were encrypted with CCMP */
  81         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  82 };
  83
  84
  85 struct ieee80211_bss {
  86         u32 device_ts_beacon, device_ts_presp;
  87
  88         bool wmm_used;
  89         bool uapsd_supported;
  90
  91 #define IEEE80211_MAX_SUPP_RATES 32
  92         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  93         size_t supp_rates_len;
  94         struct ieee80211_rate *beacon_rate;
  95
  96         /*
  97          * During association, we save an ERP value from a probe response so
  98          * that we can feed ERP info to the driver when handling the
  99          * association completes. these fields probably won't be up-to-date
 100          * otherwise, you probably don't want to use them.
 101          */
 102         bool has_erp_value;
 103         u8 erp_value;
 104
 105         /* Keep track of the corruption of the last beacon/probe response. */
 106         u8 corrupt_data;
 107
 108         /* Keep track of what bits of information we have valid info for. */
 109         u8 valid_data;
 110 };
 111
 112 /**
 113  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 114  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 115  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 116  *
 117  * These are bss flags that are attached to a bss in the
 118  * @corrupt_data field of &struct ieee80211_bss.
 119  */
 120 enum ieee80211_bss_corrupt_data_flags {
 121         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 122         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 123 };
 124
 125 /**
 126  * enum ieee80211_valid_data_flags - BSS valid data flags
 127  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 128  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 129  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 130  *
 131  * These are bss flags that are attached to a bss in the
 132  * @valid_data field of &struct ieee80211_bss.  They show which parts
 133  * of the data structure were recieved as a result of an un-corrupted
 134  * beacon/probe response.
 135  */
 136 enum ieee80211_bss_valid_data_flags {
 137         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 138         IEEE80211_BSS_VALID_RATES               = BIT(2),
 139         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 140 };
 141
 142 typedef unsigned __bitwise__ ieee80211_tx_result;
 143 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 144 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 145 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 146
 147 #define IEEE80211_TX_UNICAST            BIT(1)
 148 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 149
 150 struct ieee80211_tx_data {
 151         struct sk_buff *skb;
 152         struct sk_buff_head skbs;
 153         struct ieee80211_local *local;
 154         struct ieee80211_sub_if_data *sdata;
 155         struct sta_info *sta;
 156         struct ieee80211_key *key;
 157         struct ieee80211_tx_rate rate;
 158
 159         unsigned int flags;
 160 };
 161
 162
 163 typedef unsigned __bitwise__ ieee80211_rx_result;
 164 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 165 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 166 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 167 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 168
 169 /**
 170  * enum ieee80211_packet_rx_flags - packet RX flags
 171  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 172  *      (incl. multicast frames)
 173  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 174  * @IEEE80211_RX_AMSDU: a-MSDU packet
 175  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 176  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 177  *
 178  * These are per-frame flags that are attached to a frame in the
 179  * @rx_flags field of &struct ieee80211_rx_status.
 180  */
 181 enum ieee80211_packet_rx_flags {
 182         IEEE80211_RX_RA_MATCH                   = BIT(1),
 183         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 184         IEEE80211_RX_AMSDU                      = BIT(3),
 185         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 186         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 187 };
 188
 189 /**
 190  * enum ieee80211_rx_flags - RX data flags
 191  *
 192  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 193  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 194  *      to cfg80211_report_obss_beacon().
 195  *
 196  * These flags are used across handling multiple interfaces
 197  * for a single frame.
 198  */
 199 enum ieee80211_rx_flags {
 200         IEEE80211_RX_CMNTR              = BIT(0),
 201         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 202 };
 203
 204 struct ieee80211_rx_data {
 205         struct sk_buff *skb;
 206         struct ieee80211_local *local;
 207         struct ieee80211_sub_if_data *sdata;
 208         struct sta_info *sta;
 209         struct ieee80211_key *key;
 210
 211         unsigned int flags;
 212
 213         /*
 214          * Index into sequence numbers array, 0..16
 215          * since the last (16) is used for non-QoS,
 216          * will be 16 on non-QoS frames.
 217          */
 218         int seqno_idx;
 219
 220         /*
 221          * Index into the security IV/PN arrays, 0..16
 222          * since the last (16) is used for CCMP-encrypted
 223          * management frames, will be set to 16 on mgmt
 224          * frames and 0 on non-QoS frames.
 225          */
 226         int security_idx;
 227
 228         u32 tkip_iv32;
 229         u16 tkip_iv16;
 230 };
 231
 232 struct ieee80211_csa_settings {
 233         const u16 *counter_offsets_beacon;
 234         const u16 *counter_offsets_presp;
 235
 236         int n_counter_offsets_beacon;
 237         int n_counter_offsets_presp;
 238
 239         u8 count;
 240 };
 241
 242 struct beacon_data {
 243         u8 *head, *tail;
 244         int head_len, tail_len;
 245         struct ieee80211_meshconf_ie *meshconf;
 246         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 247         u8 csa_current_counter;
 248         struct rcu_head rcu_head;
 249 };
 250
 251 struct probe_resp {
 252         struct rcu_head rcu_head;
 253         int len;
 254         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 255         u8 data[0];
 256 };
 257
 258 struct ps_data {
 259         /* yes, this looks ugly, but guarantees that we can later use
 260          * bitmap_empty :)
 261          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 262         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 263                         __aligned(__alignof__(unsigned long));
 264         struct sk_buff_head bc_buf;
 265         atomic_t num_sta_ps; /* number of stations in PS mode */
 266         int dtim_count;
 267         bool dtim_bc_mc;
 268 };
 269
 270 struct ieee80211_if_ap {
 271         struct beacon_data __rcu *beacon;
 272         struct probe_resp __rcu *probe_resp;
 273
 274         /* to be used after channel switch. */
 275         struct cfg80211_beacon_data *next_beacon;
 276         struct list_head vlans; /* write-protected with RTNL and local->mtx */
 277
 278         struct ps_data ps;
 279         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 280         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 281                          driver_smps_mode; /* smps mode request */
 282
 283         struct work_struct request_smps_work;
 284 };
 285
 286 struct ieee80211_if_wds {
 287         struct sta_info *sta;
 288         u8 remote_addr[ETH_ALEN];
 289 };
 290
 291 struct ieee80211_if_vlan {
 292         struct list_head list; /* write-protected with RTNL and local->mtx */
 293
 294         /* used for all tx if the VLAN is configured to 4-addr mode */
 295         struct sta_info __rcu *sta;
 296 };
 297
 298 struct mesh_stats {
 299         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 300         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 301         __u32 fwded_frames;             /* Mesh total forwarded frames */
 302         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 303         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 304         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 305 };
 306
 307 #define PREQ_Q_F_START          0x1
 308 #define PREQ_Q_F_REFRESH        0x2
 309 struct mesh_preq_queue {
 310         struct list_head list;
 311         u8 dst[ETH_ALEN];
 312         u8 flags;
 313 };
 314
 315 #if HZ/100 == 0
 316 #define IEEE80211_ROC_MIN_LEFT  1
 317 #else
 318 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 319 #endif
 320
 321 struct ieee80211_roc_work {
 322         struct list_head list;
 323         struct list_head dependents;
 324
 325         struct delayed_work work;
 326
 327         struct ieee80211_sub_if_data *sdata;
 328
 329         struct ieee80211_channel *chan;
 330
 331         bool started, abort, hw_begun, notified;
 332         bool to_be_freed;
 333         bool on_channel;
 334
 335         unsigned long hw_start_time;
 336
 337         u32 duration, req_duration;
 338         struct sk_buff *frame;
 339         u64 cookie, mgmt_tx_cookie;
 340         enum ieee80211_roc_type type;
 341 };
 342
 343 /* flags used in struct ieee80211_if_managed.flags */
 344 enum ieee80211_sta_flags {
 345         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 346         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 347         IEEE80211_STA_DISABLE_HT        = BIT(4),
 348         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 349         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 350         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 351         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 352         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 353         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 354         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 355         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 356         IEEE80211_STA_DISABLE_WMM       = BIT(14),
 357 };
 358
 359 struct ieee80211_mgd_auth_data {
 360         struct cfg80211_bss *bss;
 361         unsigned long timeout;
 362         int tries;
 363         u16 algorithm, expected_transaction;
 364
 365         u8 key[WLAN_KEY_LEN_WEP104];
 366         u8 key_len, key_idx;
 367         bool done;
 368         bool timeout_started;
 369
 370         u16 sae_trans, sae_status;
 371         size_t data_len;
 372         u8 data[];
 373 };
 374
 375 struct ieee80211_mgd_assoc_data {
 376         struct cfg80211_bss *bss;
 377         const u8 *supp_rates;
 378
 379         unsigned long timeout;
 380         int tries;
 381
 382         u16 capability;
 383         u8 prev_bssid[ETH_ALEN];
 384         u8 ssid[IEEE80211_MAX_SSID_LEN];
 385         u8 ssid_len;
 386         u8 supp_rates_len;
 387         bool wmm, uapsd;
 388         bool need_beacon;
 389         bool synced;
 390         bool timeout_started;
 391
 392         u8 ap_ht_param;
 393
 394         struct ieee80211_vht_cap ap_vht_cap;
 395
 396         size_t ie_len;
 397         u8 ie[];
 398 };
 399
 400 struct ieee80211_if_managed {
 401         struct timer_list timer;
 402         struct timer_list conn_mon_timer;
 403         struct timer_list bcn_mon_timer;
 404         struct timer_list chswitch_timer;
 405         struct work_struct monitor_work;
 406         struct work_struct chswitch_work;
 407         struct work_struct beacon_connection_loss_work;
 408         struct work_struct csa_connection_drop_work;
 409
 410         unsigned long beacon_timeout;
 411         unsigned long probe_timeout;
 412         int probe_send_count;
 413         bool nullfunc_failed;
 414         bool connection_loss;
 415
 416         struct cfg80211_bss *associated;
 417         struct ieee80211_mgd_auth_data *auth_data;
 418         struct ieee80211_mgd_assoc_data *assoc_data;
 419
 420         u8 bssid[ETH_ALEN];
 421
 422         u16 aid;
 423
 424         bool powersave; /* powersave requested for this iface */
 425         bool broken_ap; /* AP is broken -- turn off powersave */
 426         bool have_beacon;
 427         u8 dtim_period;
 428         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 429                                  driver_smps_mode; /* smps mode request */
 430
 431         struct work_struct request_smps_work;
 432
 433         unsigned int flags;
 434
 435         bool beacon_crc_valid;
 436         u32 beacon_crc;
 437
 438         bool status_acked;
 439         bool status_received;
 440         __le16 status_fc;
 441
 442         enum {
 443                 IEEE80211_MFP_DISABLED,
 444                 IEEE80211_MFP_OPTIONAL,
 445                 IEEE80211_MFP_REQUIRED
 446         } mfp; /* management frame protection */
 447
 448         /*
 449          * Bitmask of enabled u-apsd queues,
 450          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 451          * to take effect.
 452          */
 453         unsigned int uapsd_queues;
 454
 455         /*
 456          * Maximum number of buffered frames AP can deliver during a
 457          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 458          * Needs a new association to take effect.
 459          */
 460         unsigned int uapsd_max_sp_len;
 461
 462         int wmm_last_param_set;
 463
 464         u8 use_4addr;
 465
 466         s16 p2p_noa_index;
 467
 468         /* Signal strength from the last Beacon frame in the current BSS. */
 469         int last_beacon_signal;
 470
 471         /*
 472          * Weighted average of the signal strength from Beacon frames in the
 473          * current BSS. This is in units of 1/16 of the signal unit to maintain
 474          * accuracy and to speed up calculations, i.e., the value need to be
 475          * divided by 16 to get the actual value.
 476          */
 477         int ave_beacon_signal;
 478
 479         /*
 480          * Number of Beacon frames used in ave_beacon_signal. This can be used
 481          * to avoid generating less reliable cqm events that would be based
 482          * only on couple of received frames.
 483          */
 484         unsigned int count_beacon_signal;
 485
 486         /*
 487          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 488          * that triggered a cqm event. 0 indicates that no event has been
 489          * generated for the current association.
 490          */
 491         int last_cqm_event_signal;
 492
 493         /*
 494          * State variables for keeping track of RSSI of the AP currently
 495          * connected to and informing driver when RSSI has gone
 496          * below/above a certain threshold.
 497          */
 498         int rssi_min_thold, rssi_max_thold;
 499         int last_ave_beacon_signal;
 500
 501         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 502         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 503         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 504         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 505
 506         u8 tdls_peer[ETH_ALEN] __aligned(2);
 507         struct delayed_work tdls_peer_del_work;
 508 };
 509
 510 struct ieee80211_if_ibss {
 511         struct timer_list timer;
 512         struct work_struct csa_connection_drop_work;
 513
 514         unsigned long last_scan_completed;
 515
 516         u32 basic_rates;
 517
 518         bool fixed_bssid;
 519         bool fixed_channel;
 520         bool privacy;
 521
 522         bool control_port;
 523         bool userspace_handles_dfs;
 524
 525         u8 bssid[ETH_ALEN] __aligned(2);
 526         u8 ssid[IEEE80211_MAX_SSID_LEN];
 527         u8 ssid_len, ie_len;
 528         u8 *ie;
 529         struct cfg80211_chan_def chandef;
 530
 531         unsigned long ibss_join_req;
 532         /* probe response/beacon for IBSS */
 533         struct beacon_data __rcu *presp;
 534
 535         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 536         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 537
 538         spinlock_t incomplete_lock;
 539         struct list_head incomplete_stations;
 540
 541         enum {
 542                 IEEE80211_IBSS_MLME_SEARCH,
 543                 IEEE80211_IBSS_MLME_JOINED,
 544         } state;
 545 };
 546
 547 /**
 548  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 549  *
 550  * these declarations define the interface, which enables
 551  * vendor-specific mesh synchronization
 552  *
 553  */
 554 struct ieee802_11_elems;
 555 struct ieee80211_mesh_sync_ops {
 556         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 557                              u16 stype,
 558                              struct ieee80211_mgmt *mgmt,
 559                              struct ieee802_11_elems *elems,
 560                              struct ieee80211_rx_status *rx_status);
 561
 562         /* should be called with beacon_data under RCU read lock */
 563         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 564                             struct beacon_data *beacon);
 565         /* add other framework functions here */
 566 };
 567
 568 struct mesh_csa_settings {
 569         struct rcu_head rcu_head;
 570         struct cfg80211_csa_settings settings;
 571 };
 572
 573 struct ieee80211_if_mesh {
 574         struct timer_list housekeeping_timer;
 575         struct timer_list mesh_path_timer;
 576         struct timer_list mesh_path_root_timer;
 577
 578         unsigned long wrkq_flags;
 579         unsigned long mbss_changed;
 580
 581         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 582         size_t mesh_id_len;
 583         /* Active Path Selection Protocol Identifier */
 584         u8 mesh_pp_id;
 585         /* Active Path Selection Metric Identifier */
 586         u8 mesh_pm_id;
 587         /* Congestion Control Mode Identifier */
 588         u8 mesh_cc_id;
 589         /* Synchronization Protocol Identifier */
 590         u8 mesh_sp_id;
 591         /* Authentication Protocol Identifier */
 592         u8 mesh_auth_id;
 593         /* Local mesh Sequence Number */
 594         u32 sn;
 595         /* Last used PREQ ID */
 596         u32 preq_id;
 597         atomic_t mpaths;
 598         /* Timestamp of last SN update */
 599         unsigned long last_sn_update;
 600         /* Time when it's ok to send next PERR */
 601         unsigned long next_perr;
 602         /* Timestamp of last PREQ sent */
 603         unsigned long last_preq;
 604         struct mesh_rmc *rmc;
 605         spinlock_t mesh_preq_queue_lock;
 606         struct mesh_preq_queue preq_queue;
 607         int preq_queue_len;
 608         struct mesh_stats mshstats;
 609         struct mesh_config mshcfg;
 610         atomic_t estab_plinks;
 611         u32 mesh_seqnum;
 612         bool accepting_plinks;
 613         int num_gates;
 614         struct beacon_data __rcu *beacon;
 615         const u8 *ie;
 616         u8 ie_len;
 617         enum {
 618                 IEEE80211_MESH_SEC_NONE = 0x0,
 619                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 620                 IEEE80211_MESH_SEC_SECURED = 0x2,
 621         } security;
 622         bool user_mpm;
 623         /* Extensible Synchronization Framework */
 624         const struct ieee80211_mesh_sync_ops *sync_ops;
 625         s64 sync_offset_clockdrift_max;
 626         spinlock_t sync_offset_lock;
 627         bool adjusting_tbtt;
 628         /* mesh power save */
 629         enum nl80211_mesh_power_mode nonpeer_pm;
 630         int ps_peers_light_sleep;
 631         int ps_peers_deep_sleep;
 632         struct ps_data ps;
 633         /* Channel Switching Support */
 634         struct mesh_csa_settings __rcu *csa;
 635         enum {
 636                 IEEE80211_MESH_CSA_ROLE_NONE,
 637                 IEEE80211_MESH_CSA_ROLE_INIT,
 638                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 639         } csa_role;
 640         u8 chsw_ttl;
 641         u16 pre_value;
 642
 643         /* offset from skb->data while building IE */
 644         int meshconf_offset;
 645 };
 646
 647 #ifdef CONFIG_MAC80211_MESH
 648 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 649         do { (msh)->mshstats.name++; } while (0)
 650 #else
 651 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 652         do { } while (0)
 653 #endif
 654
 655 /**
 656  * enum ieee80211_sub_if_data_flags - virtual interface flags
 657  *
 658  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 659  * @IEEE80211_SDATA_PROMISC: interface is promisc
 660  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 661  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 662  *      associated stations and deliver multicast frames both
 663  *      back to wireless media and to the local net stack.
 664  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 665  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 666  */
 667 enum ieee80211_sub_if_data_flags {
 668         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 669         IEEE80211_SDATA_PROMISC                 = BIT(1),
 670         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 671         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 672         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 673         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 674 };
 675
 676 /**
 677  * enum ieee80211_sdata_state_bits - virtual interface state bits
 678  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 679  *      mirrors netif_running() but is separate for interface type
 680  *      change handling while the interface is up
 681  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 682  *      mode, so queues are stopped
 683  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 684  *      to offchannel, reset when offchannel returns
 685  */
 686 enum ieee80211_sdata_state_bits {
 687         SDATA_STATE_RUNNING,
 688         SDATA_STATE_OFFCHANNEL,
 689         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 690 };
 691
 692 /**
 693  * enum ieee80211_chanctx_mode - channel context configuration mode
 694  *
 695  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 696  *      multiple interfaces
 697  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 698  *      only by a single interface. This can be used for example for
 699  *      non-fixed channel IBSS.
 700  */
 701 enum ieee80211_chanctx_mode {
 702         IEEE80211_CHANCTX_SHARED,
 703         IEEE80211_CHANCTX_EXCLUSIVE
 704 };
 705
 706 /**
 707  * enum ieee80211_chanctx_replace_state - channel context replacement state
 708  *
 709  * This is used for channel context in-place reservations that require channel
 710  * context switch/swap.
 711  *
 712  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 713  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 714  *      by a (not yet registered) channel context pointed by %replace_ctx.
 715  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 716  *      replaces an existing channel context pointed to by %replace_ctx.
 717  */
 718 enum ieee80211_chanctx_replace_state {
 719         IEEE80211_CHANCTX_REPLACE_NONE,
 720         IEEE80211_CHANCTX_WILL_BE_REPLACED,
 721         IEEE80211_CHANCTX_REPLACES_OTHER,
 722 };
 723
 724 struct ieee80211_chanctx {
 725         struct list_head list;
 726         struct rcu_head rcu_head;
 727
 728         struct list_head assigned_vifs;
 729         struct list_head reserved_vifs;
 730
 731         enum ieee80211_chanctx_replace_state replace_state;
 732         struct ieee80211_chanctx *replace_ctx;
 733
 734         enum ieee80211_chanctx_mode mode;
 735         bool driver_present;
 736
 737         struct ieee80211_chanctx_conf conf;
 738 };
 739
 740 struct mac80211_qos_map {
 741         struct cfg80211_qos_map qos_map;
 742         struct rcu_head rcu_head;
 743 };
 744
 745 struct ieee80211_sub_if_data {
 746         struct list_head list;
 747
 748         struct wireless_dev wdev;
 749
 750         /* keys */
 751         struct list_head key_list;
 752
 753         /* count for keys needing tailroom space allocation */
 754         int crypto_tx_tailroom_needed_cnt;
 755         int crypto_tx_tailroom_pending_dec;
 756         struct delayed_work dec_tailroom_needed_wk;
 757
 758         struct net_device *dev;
 759         struct ieee80211_local *local;
 760
 761         unsigned int flags;
 762
 763         unsigned long state;
 764
 765         int drop_unencrypted;
 766
 767         char name[IFNAMSIZ];
 768
 769         /* Fragment table for host-based reassembly */
 770         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 771         unsigned int fragment_next;
 772
 773         /* TID bitmap for NoAck policy */
 774         u16 noack_map;
 775
 776         /* bit field of ACM bits (BIT(802.1D tag)) */
 777         u8 wmm_acm;
 778
 779         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 780         struct ieee80211_key __rcu *default_unicast_key;
 781         struct ieee80211_key __rcu *default_multicast_key;
 782         struct ieee80211_key __rcu *default_mgmt_key;
 783
 784         u16 sequence_number;
 785         __be16 control_port_protocol;
 786         bool control_port_no_encrypt;
 787         int encrypt_headroom;
 788
 789         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 790         struct mac80211_qos_map __rcu *qos_map;
 791
 792         struct work_struct csa_finalize_work;
 793         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 794         struct cfg80211_chan_def csa_chandef;
 795
 796         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 797         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 798
 799         /* context reservation -- protected with chanctx_mtx */
 800         struct ieee80211_chanctx *reserved_chanctx;
 801         struct cfg80211_chan_def reserved_chandef;
 802         bool reserved_radar_required;
 803         bool reserved_ready;
 804
 805         /* used to reconfigure hardware SM PS */
 806         struct work_struct recalc_smps;
 807
 808         struct work_struct work;
 809         struct sk_buff_head skb_queue;
 810
 811         u8 needed_rx_chains;
 812         enum ieee80211_smps_mode smps_mode;
 813
 814         int user_power_level; /* in dBm */
 815         int ap_power_level; /* in dBm */
 816
 817         bool radar_required;
 818         struct delayed_work dfs_cac_timer_work;
 819
 820         /*
 821          * AP this belongs to: self in AP mode and
 822          * corresponding AP in VLAN mode, NULL for
 823          * all others (might be needed later in IBSS)
 824          */
 825         struct ieee80211_if_ap *bss;
 826
 827         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 828         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 829
 830         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 831         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 832
 833         union {
 834                 struct ieee80211_if_ap ap;
 835                 struct ieee80211_if_wds wds;
 836                 struct ieee80211_if_vlan vlan;
 837                 struct ieee80211_if_managed mgd;
 838                 struct ieee80211_if_ibss ibss;
 839                 struct ieee80211_if_mesh mesh;
 840                 u32 mntr_flags;
 841         } u;
 842
 843 #ifdef CONFIG_MAC80211_DEBUGFS
 844         struct {
 845                 struct dentry *subdir_stations;
 846                 struct dentry *default_unicast_key;
 847                 struct dentry *default_multicast_key;
 848                 struct dentry *default_mgmt_key;
 849         } debugfs;
 850 #endif
 851
 852         /* must be last, dynamically sized area in this! */
 853         struct ieee80211_vif vif;
 854 };
 855
 856 static inline
 857 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 858 {
 859         return container_of(p, struct ieee80211_sub_if_data, vif);
 860 }
 861
 862 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 863         __acquires(&sdata->wdev.mtx)
 864 {
 865         mutex_lock(&sdata->wdev.mtx);
 866         __acquire(&sdata->wdev.mtx);
 867 }
 868
 869 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 870         __releases(&sdata->wdev.mtx)
 871 {
 872         mutex_unlock(&sdata->wdev.mtx);
 873         __release(&sdata->wdev.mtx);
 874 }
 875
 876 #define sdata_dereference(p, sdata) \
 877         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 878
 879 static inline void
 880 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 881 {
 882         lockdep_assert_held(&sdata->wdev.mtx);
 883 }
 884
 885 static inline enum ieee80211_band
 886 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 887 {
 888         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 889         struct ieee80211_chanctx_conf *chanctx_conf;
 890
 891         rcu_read_lock();
 892         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 893         if (!WARN_ON(!chanctx_conf))
 894                 band = chanctx_conf->def.chan->band;
 895         rcu_read_unlock();
 896
 897         return band;
 898 }
 899
 900 static inline int
 901 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 902 {
 903         switch (chandef->width) {
 904         case NL80211_CHAN_WIDTH_5:
 905                 return 2;
 906         case NL80211_CHAN_WIDTH_10:
 907                 return 1;
 908         default:
 909                 return 0;
 910         }
 911 }
 912
 913 static inline int
 914 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 915 {
 916         struct ieee80211_chanctx_conf *chanctx_conf;
 917         int shift = 0;
 918
 919         rcu_read_lock();
 920         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 921         if (chanctx_conf)
 922                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 923         rcu_read_unlock();
 924
 925         return shift;
 926 }
 927
 928 struct ieee80211_rx_agg {
 929         u8 addr[ETH_ALEN];
 930         u16 tid;
 931 };
 932
 933 enum sdata_queue_type {
 934         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 935         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 936         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 937         IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
 938         IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
 939 };
 940
 941 enum {
 942         IEEE80211_RX_MSG        = 1,
 943         IEEE80211_TX_STATUS_MSG = 2,
 944 };
 945
 946 enum queue_stop_reason {
 947         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 948         IEEE80211_QUEUE_STOP_REASON_PS,
 949         IEEE80211_QUEUE_STOP_REASON_CSA,
 950         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 951         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 952         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 953         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
 954         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 955         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
 956
 957         IEEE80211_QUEUE_STOP_REASONS,
 958 };
 959
 960 #ifdef CONFIG_MAC80211_LEDS
 961 struct tpt_led_trigger {
 962         struct led_trigger trig;
 963         char name[32];
 964         const struct ieee80211_tpt_blink *blink_table;
 965         unsigned int blink_table_len;
 966         struct timer_list timer;
 967         unsigned long prev_traffic;
 968         unsigned long tx_bytes, rx_bytes;
 969         unsigned int active, want;
 970         bool running;
 971 };
 972 #endif
 973
 974 /*
 975  * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
 976  *
 977  * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
 978  * certain latency range (in Milliseconds). Each station that uses these
 979  * ranges will have bins to count the amount of frames received in that range.
 980  * The user can configure the ranges via debugfs.
 981  * If ranges is NULL then Tx latency statistics bins are disabled for all
 982  * stations.
 983  *
 984  * @n_ranges: number of ranges that are taken in account
 985  * @ranges: the ranges that the user requested or NULL if disabled.
 986  */
 987 struct ieee80211_tx_latency_bin_ranges {
 988         int n_ranges;
 989         u32 ranges[];
 990 };
 991
 992 /**
 993  * mac80211 scan flags - currently active scan mode
 994  *
 995  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 996  *      well be on the operating channel
 997  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 998  *      determine if we are on the operating channel or not
 999  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1000  *      channel. This should not interrupt normal traffic.
1001  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1002  *      that the scan completed.
1003  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1004  *      a scan complete for an aborted scan.
1005  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1006  *      cancelled.
1007  */
1008 enum {
1009         SCAN_SW_SCANNING,
1010         SCAN_HW_SCANNING,
1011         SCAN_ONCHANNEL_SCANNING,
1012         SCAN_COMPLETED,
1013         SCAN_ABORTED,
1014         SCAN_HW_CANCELLED,
1015 };
1016
1017 /**
1018  * enum mac80211_scan_state - scan state machine states
1019  *
1020  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1021  *      determines if we should keep on scanning or switch back to the
1022  *      operating channel
1023  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1024  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1025  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1026  *      send out data
1027  * @SCAN_RESUME: Resume the scan and scan the next channel
1028  * @SCAN_ABORT: Abort the scan and go back to operating channel
1029  */
1030 enum mac80211_scan_state {
1031         SCAN_DECISION,
1032         SCAN_SET_CHANNEL,
1033         SCAN_SEND_PROBE,
1034         SCAN_SUSPEND,
1035         SCAN_RESUME,
1036         SCAN_ABORT,
1037 };
1038
1039 struct ieee80211_local {
1040         /* embed the driver visible part.
1041          * don't cast (use the static inlines below), but we keep
1042          * it first anyway so they become a no-op */
1043         struct ieee80211_hw hw;
1044
1045         const struct ieee80211_ops *ops;
1046
1047         /*
1048          * private workqueue to mac80211. mac80211 makes this accessible
1049          * via ieee80211_queue_work()
1050          */
1051         struct workqueue_struct *workqueue;
1052
1053         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1054         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1055         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1056         spinlock_t queue_stop_reason_lock;
1057
1058         int open_count;
1059         int monitors, cooked_mntrs;
1060         /* number of interfaces with corresponding FIF_ flags */
1061         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1062             fif_probe_req;
1063         int probe_req_reg;
1064         unsigned int filter_flags; /* FIF_* */
1065
1066         bool wiphy_ciphers_allocated;
1067
1068         bool use_chanctx;
1069
1070         /* protects the aggregated multicast list and filter calls */
1071         spinlock_t filter_lock;
1072
1073         /* used for uploading changed mc list */
1074         struct work_struct reconfig_filter;
1075
1076         /* aggregated multicast list */
1077         struct netdev_hw_addr_list mc_list;
1078
1079         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1080
1081         /*
1082          * suspended is true if we finished all the suspend _and_ we have
1083          * not yet come up from resume. This is to be used by mac80211
1084          * to ensure driver sanity during suspend and mac80211's own
1085          * sanity. It can eventually be used for WoW as well.
1086          */
1087         bool suspended;
1088
1089         /*
1090          * Resuming is true while suspended, but when we're reprogramming the
1091          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1092          * again even though some other parts of the stack are still suspended
1093          * and we still drop received frames to avoid waking the stack.
1094          */
1095         bool resuming;
1096
1097         /*
1098          * quiescing is true during the suspend process _only_ to
1099          * ease timer cancelling etc.
1100          */
1101         bool quiescing;
1102
1103         /* device is started */
1104         bool started;
1105
1106         /* device is during a HW reconfig */
1107         bool in_reconfig;
1108
1109         /* wowlan is enabled -- don't reconfig on resume */
1110         bool wowlan;
1111
1112         /* DFS/radar detection is enabled */
1113         bool radar_detect_enabled;
1114         struct work_struct radar_detected_work;
1115
1116         /* number of RX chains the hardware has */
1117         u8 rx_chains;
1118
1119         int tx_headroom; /* required headroom for hardware/radiotap */
1120
1121         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1122          * added to skb_queue will be processed, but frames in
1123          * skb_queue_unreliable may be dropped if the total length of these
1124          * queues increases over the limit. */
1125 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1126         struct tasklet_struct tasklet;
1127         struct sk_buff_head skb_queue;
1128         struct sk_buff_head skb_queue_unreliable;
1129
1130         spinlock_t rx_path_lock;
1131
1132         /* Station data */
1133         /*
1134          * The mutex only protects the list, hash table and
1135          * counter, reads are done with RCU.
1136          */
1137         struct mutex sta_mtx;
1138         spinlock_t tim_lock;
1139         unsigned long num_sta;
1140         struct list_head sta_list;
1141         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1142         struct timer_list sta_cleanup;
1143         int sta_generation;
1144
1145         /*
1146          * Tx latency statistics parameters for all stations.
1147          * Can enable via debugfs (NULL when disabled).
1148          */
1149         struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1150
1151         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1152         struct tasklet_struct tx_pending_tasklet;
1153
1154         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1155
1156         /* number of interfaces with corresponding IFF_ flags */
1157         atomic_t iff_allmultis, iff_promiscs;
1158
1159         struct rate_control_ref *rate_ctrl;
1160
1161         struct crypto_cipher *wep_tx_tfm;
1162         struct crypto_cipher *wep_rx_tfm;
1163         u32 wep_iv;
1164
1165         /* see iface.c */
1166         struct list_head interfaces;
1167         struct mutex iflist_mtx;
1168
1169         /*
1170          * Key mutex, protects sdata's key_list and sta_info's
1171          * key pointers (write access, they're RCU.)
1172          */
1173         struct mutex key_mtx;
1174
1175         /* mutex for scan and work locking */
1176         struct mutex mtx;
1177
1178         /* Scanning and BSS list */
1179         unsigned long scanning;
1180         struct cfg80211_ssid scan_ssid;
1181         struct cfg80211_scan_request *int_scan_req;
1182         struct cfg80211_scan_request *scan_req;
1183         struct ieee80211_scan_request *hw_scan_req;
1184         struct cfg80211_chan_def scan_chandef;
1185         enum ieee80211_band hw_scan_band;
1186         int scan_channel_idx;
1187         int scan_ies_len;
1188         int hw_scan_ies_bufsize;
1189
1190         struct work_struct sched_scan_stopped_work;
1191         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1192         struct cfg80211_sched_scan_request *sched_scan_req;
1193
1194         unsigned long leave_oper_channel_time;
1195         enum mac80211_scan_state next_scan_state;
1196         struct delayed_work scan_work;
1197         struct ieee80211_sub_if_data __rcu *scan_sdata;
1198         /* For backward compatibility only -- do not use */
1199         struct cfg80211_chan_def _oper_chandef;
1200
1201         /* Temporary remain-on-channel for off-channel operations */
1202         struct ieee80211_channel *tmp_channel;
1203
1204         /* channel contexts */
1205         struct list_head chanctx_list;
1206         struct mutex chanctx_mtx;
1207
1208         /* SNMP counters */
1209         /* dot11CountersTable */
1210         u32 dot11TransmittedFragmentCount;
1211         u32 dot11MulticastTransmittedFrameCount;
1212         u32 dot11FailedCount;
1213         u32 dot11RetryCount;
1214         u32 dot11MultipleRetryCount;
1215         u32 dot11FrameDuplicateCount;
1216         u32 dot11ReceivedFragmentCount;
1217         u32 dot11MulticastReceivedFrameCount;
1218         u32 dot11TransmittedFrameCount;
1219
1220 #ifdef CONFIG_MAC80211_LEDS
1221         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1222         struct tpt_led_trigger *tpt_led_trigger;
1223         char tx_led_name[32], rx_led_name[32],
1224              assoc_led_name[32], radio_led_name[32];
1225 #endif
1226
1227 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1228         /* TX/RX handler statistics */
1229         unsigned int tx_handlers_drop;
1230         unsigned int tx_handlers_queued;
1231         unsigned int tx_handlers_drop_unencrypted;
1232         unsigned int tx_handlers_drop_fragment;
1233         unsigned int tx_handlers_drop_wep;
1234         unsigned int tx_handlers_drop_not_assoc;
1235         unsigned int tx_handlers_drop_unauth_port;
1236         unsigned int rx_handlers_drop;
1237         unsigned int rx_handlers_queued;
1238         unsigned int rx_handlers_drop_nullfunc;
1239         unsigned int rx_handlers_drop_defrag;
1240         unsigned int rx_handlers_drop_short;
1241         unsigned int tx_expand_skb_head;
1242         unsigned int tx_expand_skb_head_cloned;
1243         unsigned int rx_expand_skb_head;
1244         unsigned int rx_expand_skb_head2;
1245         unsigned int rx_handlers_fragments;
1246         unsigned int tx_status_drop;
1247 #define I802_DEBUG_INC(c) (c)++
1248 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1249 #define I802_DEBUG_INC(c) do { } while (0)
1250 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1251
1252
1253         int total_ps_buffered; /* total number of all buffered unicast and
1254                                 * multicast packets for power saving stations
1255                                 */
1256
1257         bool pspolling;
1258         bool offchannel_ps_enabled;
1259         /*
1260          * PS can only be enabled when we have exactly one managed
1261          * interface (and monitors) in PS, this then points there.
1262          */
1263         struct ieee80211_sub_if_data *ps_sdata;
1264         struct work_struct dynamic_ps_enable_work;
1265         struct work_struct dynamic_ps_disable_work;
1266         struct timer_list dynamic_ps_timer;
1267         struct notifier_block network_latency_notifier;
1268         struct notifier_block ifa_notifier;
1269         struct notifier_block ifa6_notifier;
1270
1271         /*
1272          * The dynamic ps timeout configured from user space via WEXT -
1273          * this will override whatever chosen by mac80211 internally.
1274          */
1275         int dynamic_ps_forced_timeout;
1276
1277         int user_power_level; /* in dBm, for all interfaces */
1278
1279         enum ieee80211_smps_mode smps_mode;
1280
1281         struct work_struct restart_work;
1282
1283 #ifdef CONFIG_MAC80211_DEBUGFS
1284         struct local_debugfsdentries {
1285                 struct dentry *rcdir;
1286                 struct dentry *keys;
1287         } debugfs;
1288 #endif
1289
1290         /*
1291          * Remain-on-channel support
1292          */
1293         struct list_head roc_list;
1294         struct work_struct hw_roc_start, hw_roc_done;
1295         unsigned long hw_roc_start_time;
1296         u64 roc_cookie_counter;
1297
1298         struct idr ack_status_frames;
1299         spinlock_t ack_status_lock;
1300
1301         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1302
1303         struct napi_struct *napi;
1304
1305         /* virtual monitor interface */
1306         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1307         struct cfg80211_chan_def monitor_chandef;
1308 };
1309
1310 static inline struct ieee80211_sub_if_data *
1311 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1312 {
1313         return netdev_priv(dev);
1314 }
1315
1316 static inline struct ieee80211_sub_if_data *
1317 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1318 {
1319         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1320 }
1321
1322 /* this struct represents 802.11n's RA/TID combination */
1323 struct ieee80211_ra_tid {
1324         u8 ra[ETH_ALEN];
1325         u16 tid;
1326 };
1327
1328 /* this struct holds the value parsing from channel switch IE  */
1329 struct ieee80211_csa_ie {
1330         struct cfg80211_chan_def chandef;
1331         u8 mode;
1332         u8 count;
1333         u8 ttl;
1334         u16 pre_value;
1335 };
1336
1337 /* Parsed Information Elements */
1338 struct ieee802_11_elems {
1339         const u8 *ie_start;
1340         size_t total_len;
1341
1342         /* pointers to IEs */
1343         const u8 *ssid;
1344         const u8 *supp_rates;
1345         const u8 *ds_params;
1346         const struct ieee80211_tim_ie *tim;
1347         const u8 *challenge;
1348         const u8 *rsn;
1349         const u8 *erp_info;
1350         const u8 *ext_supp_rates;
1351         const u8 *wmm_info;
1352         const u8 *wmm_param;
1353         const struct ieee80211_ht_cap *ht_cap_elem;
1354         const struct ieee80211_ht_operation *ht_operation;
1355         const struct ieee80211_vht_cap *vht_cap_elem;
1356         const struct ieee80211_vht_operation *vht_operation;
1357         const struct ieee80211_meshconf_ie *mesh_config;
1358         const u8 *mesh_id;
1359         const u8 *peering;
1360         const __le16 *awake_window;
1361         const u8 *preq;
1362         const u8 *prep;
1363         const u8 *perr;
1364         const struct ieee80211_rann_ie *rann;
1365         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1366         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1367         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1368         const u8 *country_elem;
1369         const u8 *pwr_constr_elem;
1370         const struct ieee80211_timeout_interval_ie *timeout_int;
1371         const u8 *opmode_notif;
1372         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1373         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1374
1375         /* length of them, respectively */
1376         u8 ssid_len;
1377         u8 supp_rates_len;
1378         u8 tim_len;
1379         u8 challenge_len;
1380         u8 rsn_len;
1381         u8 ext_supp_rates_len;
1382         u8 wmm_info_len;
1383         u8 wmm_param_len;
1384         u8 mesh_id_len;
1385         u8 peering_len;
1386         u8 preq_len;
1387         u8 prep_len;
1388         u8 perr_len;
1389         u8 country_elem_len;
1390
1391         /* whether a parse error occurred while retrieving these elements */
1392         bool parse_error;
1393 };
1394
1395 static inline struct ieee80211_local *hw_to_local(
1396         struct ieee80211_hw *hw)
1397 {
1398         return container_of(hw, struct ieee80211_local, hw);
1399 }
1400
1401
1402 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1403 {
1404         return ether_addr_equal(raddr, addr) ||
1405                is_broadcast_ether_addr(raddr);
1406 }
1407
1408 static inline bool
1409 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1410 {
1411         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1412                      status->flag & RX_FLAG_MACTIME_END);
1413         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1414 }
1415
1416 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1417                                      struct ieee80211_rx_status *status,
1418                                      unsigned int mpdu_len,
1419                                      unsigned int mpdu_offset);
1420 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1421 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1422 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1423                                       u32 changed);
1424 void ieee80211_configure_filter(struct ieee80211_local *local);
1425 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1426
1427 /* STA code */
1428 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1429 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1430                        struct cfg80211_auth_request *req);
1431 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1432                         struct cfg80211_assoc_request *req);
1433 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1434                          struct cfg80211_deauth_request *req);
1435 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1436                            struct cfg80211_disassoc_request *req);
1437 void ieee80211_send_pspoll(struct ieee80211_local *local,
1438                            struct ieee80211_sub_if_data *sdata);
1439 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1440 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1441 int ieee80211_max_network_latency(struct notifier_block *nb,
1442                                   unsigned long data, void *dummy);
1443 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1444 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1445 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1446                                   struct sk_buff *skb);
1447 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1448 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1449 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1450 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1451                                   __le16 fc, bool acked);
1452 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1453 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1454
1455 /* IBSS code */
1456 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1457 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1458 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1459                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1460 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1461                         struct cfg80211_ibss_params *params);
1462 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1463 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1464 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1465                                    struct sk_buff *skb);
1466 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1467                               struct cfg80211_csa_settings *csa_settings);
1468 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1469 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1470
1471 /* mesh code */
1472 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1473 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1474                                    struct sk_buff *skb);
1475 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1476                               struct cfg80211_csa_settings *csa_settings);
1477 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1478
1479 /* scan/BSS handling */
1480 void ieee80211_scan_work(struct work_struct *work);
1481 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1482                                 const u8 *ssid, u8 ssid_len,
1483                                 struct ieee80211_channel *chan,
1484                                 enum nl80211_bss_scan_width scan_width);
1485 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1486                            struct cfg80211_scan_request *req);
1487 void ieee80211_scan_cancel(struct ieee80211_local *local);
1488 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1489 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1490
1491 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1492 struct ieee80211_bss *
1493 ieee80211_bss_info_update(struct ieee80211_local *local,
1494                           struct ieee80211_rx_status *rx_status,
1495                           struct ieee80211_mgmt *mgmt,
1496                           size_t len,
1497                           struct ieee802_11_elems *elems,
1498                           struct ieee80211_channel *channel);
1499 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1500                           struct ieee80211_bss *bss);
1501
1502 /* scheduled scan handling */
1503 int
1504 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1505                                      struct cfg80211_sched_scan_request *req);
1506 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1507                                        struct cfg80211_sched_scan_request *req);
1508 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1509 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1510 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1511
1512 /* off-channel helpers */
1513 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1514 void ieee80211_offchannel_return(struct ieee80211_local *local);
1515 void ieee80211_roc_setup(struct ieee80211_local *local);
1516 void ieee80211_start_next_roc(struct ieee80211_local *local);
1517 void ieee80211_roc_purge(struct ieee80211_local *local,
1518                          struct ieee80211_sub_if_data *sdata);
1519 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1520 void ieee80211_sw_roc_work(struct work_struct *work);
1521 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1522
1523 /* channel switch handling */
1524 void ieee80211_csa_finalize_work(struct work_struct *work);
1525 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1526                              struct cfg80211_csa_settings *params);
1527
1528 /* interface handling */
1529 int ieee80211_iface_init(void);
1530 void ieee80211_iface_exit(void);
1531 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1532                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1533                      struct vif_params *params);
1534 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1535                              enum nl80211_iftype type);
1536 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1537 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1538 u32 ieee80211_idle_off(struct ieee80211_local *local);
1539 void ieee80211_recalc_idle(struct ieee80211_local *local);
1540 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1541                                     const int offset);
1542 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1543 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1544 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1545 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1546
1547 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1548 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1549
1550 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1551 {
1552         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1553 }
1554
1555 /* tx handling */
1556 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1557 void ieee80211_tx_pending(unsigned long data);
1558 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1559                                          struct net_device *dev);
1560 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1561                                        struct net_device *dev);
1562 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1563                               struct sk_buff_head *skbs);
1564
1565 /* HT */
1566 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1567                                      struct ieee80211_sta_ht_cap *ht_cap);
1568 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1569                                        struct ieee80211_supported_band *sband,
1570                                        const struct ieee80211_ht_cap *ht_cap_ie,
1571                                        struct sta_info *sta);
1572 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1573                           const u8 *da, u16 tid,
1574                           u16 initiator, u16 reason_code);
1575 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1576                                enum ieee80211_smps_mode smps, const u8 *da,
1577                                const u8 *bssid);
1578 void ieee80211_request_smps_ap_work(struct work_struct *work);
1579 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1580 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1581                                    enum ieee80211_smps_mode smps_mode_new);
1582
1583 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1584                                      u16 initiator, u16 reason, bool stop);
1585 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1586                                     u16 initiator, u16 reason, bool stop);
1587 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1588                                      u8 dialog_token, u16 timeout,
1589                                      u16 start_seq_num, u16 ba_policy, u16 tid,
1590                                      u16 buf_size, bool tx);
1591 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1592                                          enum ieee80211_agg_stop_reason reason);
1593 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1594                              struct sta_info *sta,
1595                              struct ieee80211_mgmt *mgmt, size_t len);
1596 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1597                                   struct sta_info *sta,
1598                                   struct ieee80211_mgmt *mgmt,
1599                                   size_t len);
1600 void ieee80211_process_addba_request(struct ieee80211_local *local,
1601                                      struct sta_info *sta,
1602                                      struct ieee80211_mgmt *mgmt,
1603                                      size_t len);
1604
1605 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1606                                    enum ieee80211_agg_stop_reason reason);
1607 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1608                                     enum ieee80211_agg_stop_reason reason);
1609 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1610 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1611 void ieee80211_ba_session_work(struct work_struct *work);
1612 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1613 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1614
1615 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1616
1617 /* VHT */
1618 void
1619 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1620                                     struct ieee80211_supported_band *sband,
1621                                     const struct ieee80211_vht_cap *vht_cap_ie,
1622                                     struct sta_info *sta);
1623 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1624 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1625 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1626                                   struct sta_info *sta, u8 opmode,
1627                                   enum ieee80211_band band, bool nss_only);
1628 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1629                                  struct sta_info *sta, u8 opmode,
1630                                  enum ieee80211_band band, bool nss_only);
1631 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1632                                       struct ieee80211_sta_vht_cap *vht_cap);
1633
1634 /* Spectrum management */
1635 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1636                                        struct ieee80211_mgmt *mgmt,
1637                                        size_t len);
1638 /**
1639  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1640  * @sdata: the sdata of the interface which has received the frame
1641  * @elems: parsed 802.11 elements received with the frame
1642  * @beacon: indicates if the frame was a beacon or probe response
1643  * @current_band: indicates the current band
1644  * @sta_flags: contains information about own capabilities and restrictions
1645  *      to decide which channel switch announcements can be accepted. Only the
1646  *      following subset of &enum ieee80211_sta_flags are evaluated:
1647  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1648  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1649  *      %IEEE80211_STA_DISABLE_160MHZ.
1650  * @bssid: the currently connected bssid (for reporting)
1651  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1652         All of them will be filled with if success only.
1653  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1654  */
1655 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1656                                  struct ieee802_11_elems *elems, bool beacon,
1657                                  enum ieee80211_band current_band,
1658                                  u32 sta_flags, u8 *bssid,
1659                                  struct ieee80211_csa_ie *csa_ie);
1660
1661 /* Suspend/resume and hw reconfiguration */
1662 int ieee80211_reconfig(struct ieee80211_local *local);
1663 void ieee80211_stop_device(struct ieee80211_local *local);
1664
1665 int __ieee80211_suspend(struct ieee80211_hw *hw,
1666                         struct cfg80211_wowlan *wowlan);
1667
1668 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1669 {
1670         struct ieee80211_local *local = hw_to_local(hw);
1671
1672         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1673                 "%s: resume with hardware scan still in progress\n",
1674                 wiphy_name(hw->wiphy));
1675
1676         return ieee80211_reconfig(hw_to_local(hw));
1677 }
1678
1679 /* utility functions/constants */
1680 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1681 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1682                         enum nl80211_iftype type);
1683 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1684                              int rate, int erp, int short_preamble,
1685                              int shift);
1686 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1687                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1688                                      gfp_t gfp);
1689 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1690                                bool bss_notify);
1691 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1692                     enum ieee80211_band band);
1693
1694 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1695                                  struct sk_buff *skb, int tid,
1696                                  enum ieee80211_band band);
1697
1698 static inline void
1699 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1700                           struct sk_buff *skb, int tid,
1701                           enum ieee80211_band band)
1702 {
1703         rcu_read_lock();
1704         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1705         rcu_read_unlock();
1706 }
1707
1708 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1709                                         struct sk_buff *skb, int tid)
1710 {
1711         struct ieee80211_chanctx_conf *chanctx_conf;
1712
1713         rcu_read_lock();
1714         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1715         if (WARN_ON(!chanctx_conf)) {
1716                 rcu_read_unlock();
1717                 kfree_skb(skb);
1718                 return;
1719         }
1720
1721         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1722                                     chanctx_conf->def.chan->band);
1723         rcu_read_unlock();
1724 }
1725
1726 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1727                                     struct sk_buff *skb)
1728 {
1729         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1730         ieee80211_tx_skb_tid(sdata, skb, 7);
1731 }
1732
1733 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1734                                struct ieee802_11_elems *elems,
1735                                u64 filter, u32 crc);
1736 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1737                                           bool action,
1738                                           struct ieee802_11_elems *elems)
1739 {
1740         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1741 }
1742
1743 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1744 {
1745         struct sk_buff *tail = skb_peek_tail(frames);
1746         struct ieee80211_rx_status *status;
1747
1748         if (!tail)
1749                 return false;
1750
1751         status = IEEE80211_SKB_RXCB(tail);
1752         if (status->flag & RX_FLAG_AMSDU_MORE)
1753                 return false;
1754
1755         return true;
1756 }
1757
1758 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1759 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1760 void ieee80211_dynamic_ps_timer(unsigned long data);
1761 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1762                              struct ieee80211_sub_if_data *sdata,
1763                              int powersave);
1764 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1765                              struct ieee80211_hdr *hdr);
1766 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1767                              struct ieee80211_hdr *hdr, bool ack);
1768
1769 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1770                                      unsigned long queues,
1771                                      enum queue_stop_reason reason,
1772                                      bool refcounted);
1773 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1774                                struct ieee80211_sub_if_data *sdata,
1775                                enum queue_stop_reason reason);
1776 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1777                                struct ieee80211_sub_if_data *sdata,
1778                                enum queue_stop_reason reason);
1779 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1780                                      unsigned long queues,
1781                                      enum queue_stop_reason reason,
1782                                      bool refcounted);
1783 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1784                                     enum queue_stop_reason reason,
1785                                     bool refcounted);
1786 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1787                                     enum queue_stop_reason reason,
1788                                     bool refcounted);
1789 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1790 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1791                                struct sk_buff *skb);
1792 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1793                                 struct sk_buff_head *skbs);
1794 void ieee80211_flush_queues(struct ieee80211_local *local,
1795                             struct ieee80211_sub_if_data *sdata);
1796
1797 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1798                          u16 transaction, u16 auth_alg, u16 status,
1799                          const u8 *extra, size_t extra_len, const u8 *bssid,
1800                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1801                          u32 tx_flags);
1802 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1803                                     const u8 *bssid, u16 stype, u16 reason,
1804                                     bool send_frame, u8 *frame_buf);
1805 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1806                              size_t buffer_len,
1807                              struct ieee80211_scan_ies *ie_desc,
1808                              const u8 *ie, size_t ie_len,
1809                              u8 bands_used, u32 *rate_masks,
1810                              struct cfg80211_chan_def *chandef);
1811 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1812                                           u8 *dst, u32 ratemask,
1813                                           struct ieee80211_channel *chan,
1814                                           const u8 *ssid, size_t ssid_len,
1815                                           const u8 *ie, size_t ie_len,
1816                                           bool directed);
1817 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1818                               const u8 *ssid, size_t ssid_len,
1819                               const u8 *ie, size_t ie_len,
1820                               u32 ratemask, bool directed, u32 tx_flags,
1821                               struct ieee80211_channel *channel, bool scan);
1822
1823 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1824                             struct ieee802_11_elems *elems,
1825                             enum ieee80211_band band, u32 *basic_rates);
1826 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1827                                  enum ieee80211_smps_mode smps_mode);
1828 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1829                                 enum ieee80211_smps_mode smps_mode);
1830 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1831 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1832
1833 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1834                           const u8 *ids, int n_ids, size_t offset);
1835 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1836 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1837                               u16 cap);
1838 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1839                                const struct cfg80211_chan_def *chandef,
1840                                u16 prot_mode);
1841 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1842                                u32 cap);
1843 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1844                              const struct ieee80211_supported_band *sband,
1845                              const u8 *srates, int srates_len, u32 *rates);
1846 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1847                             struct sk_buff *skb, bool need_basic,
1848                             enum ieee80211_band band);
1849 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1850                                 struct sk_buff *skb, bool need_basic,
1851                                 enum ieee80211_band band);
1852 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1853
1854 /* channel management */
1855 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1856                                   const struct ieee80211_ht_operation *ht_oper,
1857                                   struct cfg80211_chan_def *chandef);
1858 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1859
1860 int __must_check
1861 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1862                           const struct cfg80211_chan_def *chandef,
1863                           enum ieee80211_chanctx_mode mode);
1864 int __must_check
1865 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1866                               const struct cfg80211_chan_def *chandef,
1867                               enum ieee80211_chanctx_mode mode,
1868                               bool radar_required);
1869 int __must_check
1870 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1871 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1872 int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local);
1873
1874 int __must_check
1875 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1876                                const struct cfg80211_chan_def *chandef,
1877                                u32 *changed);
1878 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1879 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1880 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1881                                          bool clear);
1882 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1883                                struct ieee80211_chanctx *ctx);
1884
1885 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1886                                    struct ieee80211_chanctx *chanctx);
1887 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1888                                       struct ieee80211_chanctx *ctx);
1889
1890 void ieee80211_dfs_cac_timer(unsigned long data);
1891 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1892 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1893 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1894 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1895                               struct cfg80211_csa_settings *csa_settings);
1896
1897 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1898 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1899 const struct ieee80211_cipher_scheme *
1900 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1901                  enum nl80211_iftype iftype);
1902 int ieee80211_cs_headroom(struct ieee80211_local *local,
1903                           struct cfg80211_crypto_settings *crypto,
1904                           enum nl80211_iftype iftype);
1905 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1906                            struct ieee80211_sub_if_data *sdata);
1907 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1908                                  const struct cfg80211_chan_def *chandef,
1909                                  enum ieee80211_chanctx_mode chanmode,
1910                                  u8 radar_detect);
1911 int ieee80211_max_num_channels(struct ieee80211_local *local);
1912
1913 /* TDLS */
1914 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1915                         const u8 *peer, u8 action_code, u8 dialog_token,
1916                         u16 status_code, u32 peer_capability,
1917                         bool initiator, const u8 *extra_ies,
1918                         size_t extra_ies_len);
1919 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1920                         const u8 *peer, enum nl80211_tdls_operation oper);
1921
1922
1923 extern const struct ethtool_ops ieee80211_ethtool_ops;
1924
1925 #ifdef CONFIG_MAC80211_NOINLINE
1926 #define debug_noinline noinline
1927 #else
1928 #define debug_noinline
1929 #endif
1930
1931 #endif /* IEEE80211_I_H */
1932 void ieee80211_tdls_peer_del_work(struct work_struct *wk);