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_CSA_RECEIVED      = BIT(5),
 349         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 350         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 351         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 352         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 353         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 354         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 355         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 356         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 357         IEEE80211_STA_DISABLE_WMM       = BIT(14),
 358 };
 359
 360 struct ieee80211_mgd_auth_data {
 361         struct cfg80211_bss *bss;
 362         unsigned long timeout;
 363         int tries;
 364         u16 algorithm, expected_transaction;
 365
 366         u8 key[WLAN_KEY_LEN_WEP104];
 367         u8 key_len, key_idx;
 368         bool done;
 369         bool timeout_started;
 370
 371         u16 sae_trans, sae_status;
 372         size_t data_len;
 373         u8 data[];
 374 };
 375
 376 struct ieee80211_mgd_assoc_data {
 377         struct cfg80211_bss *bss;
 378         const u8 *supp_rates;
 379
 380         unsigned long timeout;
 381         int tries;
 382
 383         u16 capability;
 384         u8 prev_bssid[ETH_ALEN];
 385         u8 ssid[IEEE80211_MAX_SSID_LEN];
 386         u8 ssid_len;
 387         u8 supp_rates_len;
 388         bool wmm, uapsd;
 389         bool need_beacon;
 390         bool synced;
 391         bool timeout_started;
 392
 393         u8 ap_ht_param;
 394
 395         struct ieee80211_vht_cap ap_vht_cap;
 396
 397         size_t ie_len;
 398         u8 ie[];
 399 };
 400
 401 struct ieee80211_if_managed {
 402         struct timer_list timer;
 403         struct timer_list conn_mon_timer;
 404         struct timer_list bcn_mon_timer;
 405         struct timer_list chswitch_timer;
 406         struct work_struct monitor_work;
 407         struct work_struct chswitch_work;
 408         struct work_struct beacon_connection_loss_work;
 409         struct work_struct csa_connection_drop_work;
 410
 411         unsigned long beacon_timeout;
 412         unsigned long probe_timeout;
 413         int probe_send_count;
 414         bool nullfunc_failed;
 415         bool connection_loss;
 416
 417         struct cfg80211_bss *associated;
 418         struct ieee80211_mgd_auth_data *auth_data;
 419         struct ieee80211_mgd_assoc_data *assoc_data;
 420
 421         u8 bssid[ETH_ALEN];
 422
 423         u16 aid;
 424
 425         bool powersave; /* powersave requested for this iface */
 426         bool broken_ap; /* AP is broken -- turn off powersave */
 427         bool have_beacon;
 428         u8 dtim_period;
 429         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 430                                  driver_smps_mode; /* smps mode request */
 431
 432         struct work_struct request_smps_work;
 433
 434         unsigned int flags;
 435
 436         bool beacon_crc_valid;
 437         u32 beacon_crc;
 438
 439         bool status_acked;
 440         bool status_received;
 441         __le16 status_fc;
 442
 443         enum {
 444                 IEEE80211_MFP_DISABLED,
 445                 IEEE80211_MFP_OPTIONAL,
 446                 IEEE80211_MFP_REQUIRED
 447         } mfp; /* management frame protection */
 448
 449         /*
 450          * Bitmask of enabled u-apsd queues,
 451          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 452          * to take effect.
 453          */
 454         unsigned int uapsd_queues;
 455
 456         /*
 457          * Maximum number of buffered frames AP can deliver during a
 458          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 459          * Needs a new association to take effect.
 460          */
 461         unsigned int uapsd_max_sp_len;
 462
 463         int wmm_last_param_set;
 464
 465         u8 use_4addr;
 466
 467         s16 p2p_noa_index;
 468
 469         /* Signal strength from the last Beacon frame in the current BSS. */
 470         int last_beacon_signal;
 471
 472         /*
 473          * Weighted average of the signal strength from Beacon frames in the
 474          * current BSS. This is in units of 1/16 of the signal unit to maintain
 475          * accuracy and to speed up calculations, i.e., the value need to be
 476          * divided by 16 to get the actual value.
 477          */
 478         int ave_beacon_signal;
 479
 480         /*
 481          * Number of Beacon frames used in ave_beacon_signal. This can be used
 482          * to avoid generating less reliable cqm events that would be based
 483          * only on couple of received frames.
 484          */
 485         unsigned int count_beacon_signal;
 486
 487         /*
 488          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 489          * that triggered a cqm event. 0 indicates that no event has been
 490          * generated for the current association.
 491          */
 492         int last_cqm_event_signal;
 493
 494         /*
 495          * State variables for keeping track of RSSI of the AP currently
 496          * connected to and informing driver when RSSI has gone
 497          * below/above a certain threshold.
 498          */
 499         int rssi_min_thold, rssi_max_thold;
 500         int last_ave_beacon_signal;
 501
 502         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 503         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 504         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 505         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 506 };
 507
 508 struct ieee80211_if_ibss {
 509         struct timer_list timer;
 510         struct work_struct csa_connection_drop_work;
 511
 512         unsigned long last_scan_completed;
 513
 514         u32 basic_rates;
 515
 516         bool fixed_bssid;
 517         bool fixed_channel;
 518         bool privacy;
 519
 520         bool control_port;
 521         bool userspace_handles_dfs;
 522
 523         u8 bssid[ETH_ALEN] __aligned(2);
 524         u8 ssid[IEEE80211_MAX_SSID_LEN];
 525         u8 ssid_len, ie_len;
 526         u8 *ie;
 527         struct cfg80211_chan_def chandef;
 528
 529         unsigned long ibss_join_req;
 530         /* probe response/beacon for IBSS */
 531         struct beacon_data __rcu *presp;
 532
 533         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 534         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 535
 536         spinlock_t incomplete_lock;
 537         struct list_head incomplete_stations;
 538
 539         enum {
 540                 IEEE80211_IBSS_MLME_SEARCH,
 541                 IEEE80211_IBSS_MLME_JOINED,
 542         } state;
 543 };
 544
 545 /**
 546  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 547  *
 548  * these declarations define the interface, which enables
 549  * vendor-specific mesh synchronization
 550  *
 551  */
 552 struct ieee802_11_elems;
 553 struct ieee80211_mesh_sync_ops {
 554         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 555                              u16 stype,
 556                              struct ieee80211_mgmt *mgmt,
 557                              struct ieee802_11_elems *elems,
 558                              struct ieee80211_rx_status *rx_status);
 559
 560         /* should be called with beacon_data under RCU read lock */
 561         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 562                             struct beacon_data *beacon);
 563         /* add other framework functions here */
 564 };
 565
 566 struct mesh_csa_settings {
 567         struct rcu_head rcu_head;
 568         struct cfg80211_csa_settings settings;
 569 };
 570
 571 struct ieee80211_if_mesh {
 572         struct timer_list housekeeping_timer;
 573         struct timer_list mesh_path_timer;
 574         struct timer_list mesh_path_root_timer;
 575
 576         unsigned long wrkq_flags;
 577         unsigned long mbss_changed;
 578
 579         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 580         size_t mesh_id_len;
 581         /* Active Path Selection Protocol Identifier */
 582         u8 mesh_pp_id;
 583         /* Active Path Selection Metric Identifier */
 584         u8 mesh_pm_id;
 585         /* Congestion Control Mode Identifier */
 586         u8 mesh_cc_id;
 587         /* Synchronization Protocol Identifier */
 588         u8 mesh_sp_id;
 589         /* Authentication Protocol Identifier */
 590         u8 mesh_auth_id;
 591         /* Local mesh Sequence Number */
 592         u32 sn;
 593         /* Last used PREQ ID */
 594         u32 preq_id;
 595         atomic_t mpaths;
 596         /* Timestamp of last SN update */
 597         unsigned long last_sn_update;
 598         /* Time when it's ok to send next PERR */
 599         unsigned long next_perr;
 600         /* Timestamp of last PREQ sent */
 601         unsigned long last_preq;
 602         struct mesh_rmc *rmc;
 603         spinlock_t mesh_preq_queue_lock;
 604         struct mesh_preq_queue preq_queue;
 605         int preq_queue_len;
 606         struct mesh_stats mshstats;
 607         struct mesh_config mshcfg;
 608         atomic_t estab_plinks;
 609         u32 mesh_seqnum;
 610         bool accepting_plinks;
 611         int num_gates;
 612         struct beacon_data __rcu *beacon;
 613         const u8 *ie;
 614         u8 ie_len;
 615         enum {
 616                 IEEE80211_MESH_SEC_NONE = 0x0,
 617                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 618                 IEEE80211_MESH_SEC_SECURED = 0x2,
 619         } security;
 620         bool user_mpm;
 621         /* Extensible Synchronization Framework */
 622         const struct ieee80211_mesh_sync_ops *sync_ops;
 623         s64 sync_offset_clockdrift_max;
 624         spinlock_t sync_offset_lock;
 625         bool adjusting_tbtt;
 626         /* mesh power save */
 627         enum nl80211_mesh_power_mode nonpeer_pm;
 628         int ps_peers_light_sleep;
 629         int ps_peers_deep_sleep;
 630         struct ps_data ps;
 631         /* Channel Switching Support */
 632         struct mesh_csa_settings __rcu *csa;
 633         enum {
 634                 IEEE80211_MESH_CSA_ROLE_NONE,
 635                 IEEE80211_MESH_CSA_ROLE_INIT,
 636                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 637         } csa_role;
 638         u8 chsw_ttl;
 639         u16 pre_value;
 640
 641         /* offset from skb->data while building IE */
 642         int meshconf_offset;
 643 };
 644
 645 #ifdef CONFIG_MAC80211_MESH
 646 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 647         do { (msh)->mshstats.name++; } while (0)
 648 #else
 649 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 650         do { } while (0)
 651 #endif
 652
 653 /**
 654  * enum ieee80211_sub_if_data_flags - virtual interface flags
 655  *
 656  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 657  * @IEEE80211_SDATA_PROMISC: interface is promisc
 658  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 659  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 660  *      associated stations and deliver multicast frames both
 661  *      back to wireless media and to the local net stack.
 662  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 663  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 664  */
 665 enum ieee80211_sub_if_data_flags {
 666         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 667         IEEE80211_SDATA_PROMISC                 = BIT(1),
 668         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 669         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 670         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 671         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 672 };
 673
 674 /**
 675  * enum ieee80211_sdata_state_bits - virtual interface state bits
 676  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 677  *      mirrors netif_running() but is separate for interface type
 678  *      change handling while the interface is up
 679  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 680  *      mode, so queues are stopped
 681  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 682  *      to offchannel, reset when offchannel returns
 683  */
 684 enum ieee80211_sdata_state_bits {
 685         SDATA_STATE_RUNNING,
 686         SDATA_STATE_OFFCHANNEL,
 687         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 688 };
 689
 690 /**
 691  * enum ieee80211_chanctx_mode - channel context configuration mode
 692  *
 693  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 694  *      multiple interfaces
 695  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 696  *      only by a single interface. This can be used for example for
 697  *      non-fixed channel IBSS.
 698  */
 699 enum ieee80211_chanctx_mode {
 700         IEEE80211_CHANCTX_SHARED,
 701         IEEE80211_CHANCTX_EXCLUSIVE
 702 };
 703
 704 struct ieee80211_chanctx {
 705         struct list_head list;
 706         struct rcu_head rcu_head;
 707
 708         struct list_head assigned_vifs;
 709         struct list_head reserved_vifs;
 710
 711         enum ieee80211_chanctx_mode mode;
 712         bool driver_present;
 713
 714         struct ieee80211_chanctx_conf conf;
 715 };
 716
 717 struct mac80211_qos_map {
 718         struct cfg80211_qos_map qos_map;
 719         struct rcu_head rcu_head;
 720 };
 721
 722 struct ieee80211_sub_if_data {
 723         struct list_head list;
 724
 725         struct wireless_dev wdev;
 726
 727         /* keys */
 728         struct list_head key_list;
 729
 730         /* count for keys needing tailroom space allocation */
 731         int crypto_tx_tailroom_needed_cnt;
 732         int crypto_tx_tailroom_pending_dec;
 733         struct delayed_work dec_tailroom_needed_wk;
 734
 735         struct net_device *dev;
 736         struct ieee80211_local *local;
 737
 738         unsigned int flags;
 739
 740         unsigned long state;
 741
 742         int drop_unencrypted;
 743
 744         char name[IFNAMSIZ];
 745
 746         /* Fragment table for host-based reassembly */
 747         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 748         unsigned int fragment_next;
 749
 750         /* TID bitmap for NoAck policy */
 751         u16 noack_map;
 752
 753         /* bit field of ACM bits (BIT(802.1D tag)) */
 754         u8 wmm_acm;
 755
 756         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 757         struct ieee80211_key __rcu *default_unicast_key;
 758         struct ieee80211_key __rcu *default_multicast_key;
 759         struct ieee80211_key __rcu *default_mgmt_key;
 760
 761         u16 sequence_number;
 762         __be16 control_port_protocol;
 763         bool control_port_no_encrypt;
 764         int encrypt_headroom;
 765
 766         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 767         struct mac80211_qos_map __rcu *qos_map;
 768
 769         struct work_struct csa_finalize_work;
 770         bool csa_radar_required;
 771         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 772         struct cfg80211_chan_def csa_chandef;
 773
 774         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 775         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 776
 777         /* context reservation -- protected with chanctx_mtx */
 778         struct ieee80211_chanctx *reserved_chanctx;
 779         struct cfg80211_chan_def reserved_chandef;
 780         bool reserved_radar_required;
 781
 782         /* used to reconfigure hardware SM PS */
 783         struct work_struct recalc_smps;
 784
 785         struct work_struct work;
 786         struct sk_buff_head skb_queue;
 787
 788         u8 needed_rx_chains;
 789         enum ieee80211_smps_mode smps_mode;
 790
 791         int user_power_level; /* in dBm */
 792         int ap_power_level; /* in dBm */
 793
 794         bool radar_required;
 795         struct delayed_work dfs_cac_timer_work;
 796
 797         u8 tdls_peer[ETH_ALEN] __aligned(2);
 798         struct delayed_work tdls_peer_del_work;
 799
 800         /*
 801          * AP this belongs to: self in AP mode and
 802          * corresponding AP in VLAN mode, NULL for
 803          * all others (might be needed later in IBSS)
 804          */
 805         struct ieee80211_if_ap *bss;
 806
 807         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 808         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 809
 810         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 811         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 812
 813         union {
 814                 struct ieee80211_if_ap ap;
 815                 struct ieee80211_if_wds wds;
 816                 struct ieee80211_if_vlan vlan;
 817                 struct ieee80211_if_managed mgd;
 818                 struct ieee80211_if_ibss ibss;
 819                 struct ieee80211_if_mesh mesh;
 820                 u32 mntr_flags;
 821         } u;
 822
 823 #ifdef CONFIG_MAC80211_DEBUGFS
 824         struct {
 825                 struct dentry *subdir_stations;
 826                 struct dentry *default_unicast_key;
 827                 struct dentry *default_multicast_key;
 828                 struct dentry *default_mgmt_key;
 829         } debugfs;
 830 #endif
 831
 832         /* must be last, dynamically sized area in this! */
 833         struct ieee80211_vif vif;
 834 };
 835
 836 static inline
 837 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 838 {
 839         return container_of(p, struct ieee80211_sub_if_data, vif);
 840 }
 841
 842 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 843         __acquires(&sdata->wdev.mtx)
 844 {
 845         mutex_lock(&sdata->wdev.mtx);
 846         __acquire(&sdata->wdev.mtx);
 847 }
 848
 849 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 850         __releases(&sdata->wdev.mtx)
 851 {
 852         mutex_unlock(&sdata->wdev.mtx);
 853         __release(&sdata->wdev.mtx);
 854 }
 855
 856 #define sdata_dereference(p, sdata) \
 857         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 858
 859 static inline void
 860 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 861 {
 862         lockdep_assert_held(&sdata->wdev.mtx);
 863 }
 864
 865 static inline enum ieee80211_band
 866 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 867 {
 868         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 869         struct ieee80211_chanctx_conf *chanctx_conf;
 870
 871         rcu_read_lock();
 872         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 873         if (!WARN_ON(!chanctx_conf))
 874                 band = chanctx_conf->def.chan->band;
 875         rcu_read_unlock();
 876
 877         return band;
 878 }
 879
 880 static inline int
 881 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 882 {
 883         switch (chandef->width) {
 884         case NL80211_CHAN_WIDTH_5:
 885                 return 2;
 886         case NL80211_CHAN_WIDTH_10:
 887                 return 1;
 888         default:
 889                 return 0;
 890         }
 891 }
 892
 893 static inline int
 894 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 895 {
 896         struct ieee80211_chanctx_conf *chanctx_conf;
 897         int shift = 0;
 898
 899         rcu_read_lock();
 900         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 901         if (chanctx_conf)
 902                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 903         rcu_read_unlock();
 904
 905         return shift;
 906 }
 907
 908 enum sdata_queue_type {
 909         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 910         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 911         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 912 };
 913
 914 enum {
 915         IEEE80211_RX_MSG        = 1,
 916         IEEE80211_TX_STATUS_MSG = 2,
 917 };
 918
 919 enum queue_stop_reason {
 920         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 921         IEEE80211_QUEUE_STOP_REASON_PS,
 922         IEEE80211_QUEUE_STOP_REASON_CSA,
 923         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 924         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 925         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 926         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
 927         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 928         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
 929
 930         IEEE80211_QUEUE_STOP_REASONS,
 931 };
 932
 933 #ifdef CONFIG_MAC80211_LEDS
 934 struct tpt_led_trigger {
 935         struct led_trigger trig;
 936         char name[32];
 937         const struct ieee80211_tpt_blink *blink_table;
 938         unsigned int blink_table_len;
 939         struct timer_list timer;
 940         unsigned long prev_traffic;
 941         unsigned long tx_bytes, rx_bytes;
 942         unsigned int active, want;
 943         bool running;
 944 };
 945 #endif
 946
 947 /*
 948  * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
 949  *
 950  * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
 951  * certain latency range (in Milliseconds). Each station that uses these
 952  * ranges will have bins to count the amount of frames received in that range.
 953  * The user can configure the ranges via debugfs.
 954  * If ranges is NULL then Tx latency statistics bins are disabled for all
 955  * stations.
 956  *
 957  * @n_ranges: number of ranges that are taken in account
 958  * @ranges: the ranges that the user requested or NULL if disabled.
 959  */
 960 struct ieee80211_tx_latency_bin_ranges {
 961         int n_ranges;
 962         u32 ranges[];
 963 };
 964
 965 /**
 966  * mac80211 scan flags - currently active scan mode
 967  *
 968  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 969  *      well be on the operating channel
 970  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 971  *      determine if we are on the operating channel or not
 972  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
 973  *      channel. This should not interrupt normal traffic.
 974  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 975  *      that the scan completed.
 976  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 977  *      a scan complete for an aborted scan.
 978  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
 979  *      cancelled.
 980  */
 981 enum {
 982         SCAN_SW_SCANNING,
 983         SCAN_HW_SCANNING,
 984         SCAN_ONCHANNEL_SCANNING,
 985         SCAN_COMPLETED,
 986         SCAN_ABORTED,
 987         SCAN_HW_CANCELLED,
 988 };
 989
 990 /**
 991  * enum mac80211_scan_state - scan state machine states
 992  *
 993  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 994  *      determines if we should keep on scanning or switch back to the
 995  *      operating channel
 996  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 997  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 998  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 999  *      send out data
1000  * @SCAN_RESUME: Resume the scan and scan the next channel
1001  * @SCAN_ABORT: Abort the scan and go back to operating channel
1002  */
1003 enum mac80211_scan_state {
1004         SCAN_DECISION,
1005         SCAN_SET_CHANNEL,
1006         SCAN_SEND_PROBE,
1007         SCAN_SUSPEND,
1008         SCAN_RESUME,
1009         SCAN_ABORT,
1010 };
1011
1012 struct ieee80211_local {
1013         /* embed the driver visible part.
1014          * don't cast (use the static inlines below), but we keep
1015          * it first anyway so they become a no-op */
1016         struct ieee80211_hw hw;
1017
1018         const struct ieee80211_ops *ops;
1019
1020         /*
1021          * private workqueue to mac80211. mac80211 makes this accessible
1022          * via ieee80211_queue_work()
1023          */
1024         struct workqueue_struct *workqueue;
1025
1026         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1027         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1028         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1029         spinlock_t queue_stop_reason_lock;
1030
1031         int open_count;
1032         int monitors, cooked_mntrs;
1033         /* number of interfaces with corresponding FIF_ flags */
1034         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1035             fif_probe_req;
1036         int probe_req_reg;
1037         unsigned int filter_flags; /* FIF_* */
1038
1039         bool wiphy_ciphers_allocated;
1040
1041         bool use_chanctx;
1042
1043         /* protects the aggregated multicast list and filter calls */
1044         spinlock_t filter_lock;
1045
1046         /* used for uploading changed mc list */
1047         struct work_struct reconfig_filter;
1048
1049         /* aggregated multicast list */
1050         struct netdev_hw_addr_list mc_list;
1051
1052         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1053
1054         /*
1055          * suspended is true if we finished all the suspend _and_ we have
1056          * not yet come up from resume. This is to be used by mac80211
1057          * to ensure driver sanity during suspend and mac80211's own
1058          * sanity. It can eventually be used for WoW as well.
1059          */
1060         bool suspended;
1061
1062         /*
1063          * Resuming is true while suspended, but when we're reprogramming the
1064          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1065          * again even though some other parts of the stack are still suspended
1066          * and we still drop received frames to avoid waking the stack.
1067          */
1068         bool resuming;
1069
1070         /*
1071          * quiescing is true during the suspend process _only_ to
1072          * ease timer cancelling etc.
1073          */
1074         bool quiescing;
1075
1076         /* device is started */
1077         bool started;
1078
1079         /* device is during a HW reconfig */
1080         bool in_reconfig;
1081
1082         /* wowlan is enabled -- don't reconfig on resume */
1083         bool wowlan;
1084
1085         /* DFS/radar detection is enabled */
1086         bool radar_detect_enabled;
1087         struct work_struct radar_detected_work;
1088
1089         /* number of RX chains the hardware has */
1090         u8 rx_chains;
1091
1092         int tx_headroom; /* required headroom for hardware/radiotap */
1093
1094         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1095          * added to skb_queue will be processed, but frames in
1096          * skb_queue_unreliable may be dropped if the total length of these
1097          * queues increases over the limit. */
1098 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1099         struct tasklet_struct tasklet;
1100         struct sk_buff_head skb_queue;
1101         struct sk_buff_head skb_queue_unreliable;
1102
1103         spinlock_t rx_path_lock;
1104
1105         /* Station data */
1106         /*
1107          * The mutex only protects the list, hash table and
1108          * counter, reads are done with RCU.
1109          */
1110         struct mutex sta_mtx;
1111         spinlock_t tim_lock;
1112         unsigned long num_sta;
1113         struct list_head sta_list;
1114         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1115         struct timer_list sta_cleanup;
1116         int sta_generation;
1117
1118         /*
1119          * Tx latency statistics parameters for all stations.
1120          * Can enable via debugfs (NULL when disabled).
1121          */
1122         struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1123
1124         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1125         struct tasklet_struct tx_pending_tasklet;
1126
1127         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1128
1129         /* number of interfaces with corresponding IFF_ flags */
1130         atomic_t iff_allmultis, iff_promiscs;
1131
1132         struct rate_control_ref *rate_ctrl;
1133
1134         struct crypto_cipher *wep_tx_tfm;
1135         struct crypto_cipher *wep_rx_tfm;
1136         u32 wep_iv;
1137
1138         /* see iface.c */
1139         struct list_head interfaces;
1140         struct mutex iflist_mtx;
1141
1142         /*
1143          * Key mutex, protects sdata's key_list and sta_info's
1144          * key pointers (write access, they're RCU.)
1145          */
1146         struct mutex key_mtx;
1147
1148         /* mutex for scan and work locking */
1149         struct mutex mtx;
1150
1151         /* Scanning and BSS list */
1152         unsigned long scanning;
1153         struct cfg80211_ssid scan_ssid;
1154         struct cfg80211_scan_request *int_scan_req;
1155         struct cfg80211_scan_request *scan_req, *hw_scan_req;
1156         struct cfg80211_chan_def scan_chandef;
1157         enum ieee80211_band hw_scan_band;
1158         int scan_channel_idx;
1159         int scan_ies_len;
1160         int hw_scan_ies_bufsize;
1161
1162         struct work_struct sched_scan_stopped_work;
1163         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1164         struct cfg80211_sched_scan_request *sched_scan_req;
1165
1166         unsigned long leave_oper_channel_time;
1167         enum mac80211_scan_state next_scan_state;
1168         struct delayed_work scan_work;
1169         struct ieee80211_sub_if_data __rcu *scan_sdata;
1170         /* For backward compatibility only -- do not use */
1171         struct cfg80211_chan_def _oper_chandef;
1172
1173         /* Temporary remain-on-channel for off-channel operations */
1174         struct ieee80211_channel *tmp_channel;
1175
1176         /* channel contexts */
1177         struct list_head chanctx_list;
1178         struct mutex chanctx_mtx;
1179
1180         /* SNMP counters */
1181         /* dot11CountersTable */
1182         u32 dot11TransmittedFragmentCount;
1183         u32 dot11MulticastTransmittedFrameCount;
1184         u32 dot11FailedCount;
1185         u32 dot11RetryCount;
1186         u32 dot11MultipleRetryCount;
1187         u32 dot11FrameDuplicateCount;
1188         u32 dot11ReceivedFragmentCount;
1189         u32 dot11MulticastReceivedFrameCount;
1190         u32 dot11TransmittedFrameCount;
1191
1192 #ifdef CONFIG_MAC80211_LEDS
1193         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1194         struct tpt_led_trigger *tpt_led_trigger;
1195         char tx_led_name[32], rx_led_name[32],
1196              assoc_led_name[32], radio_led_name[32];
1197 #endif
1198
1199 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1200         /* TX/RX handler statistics */
1201         unsigned int tx_handlers_drop;
1202         unsigned int tx_handlers_queued;
1203         unsigned int tx_handlers_drop_unencrypted;
1204         unsigned int tx_handlers_drop_fragment;
1205         unsigned int tx_handlers_drop_wep;
1206         unsigned int tx_handlers_drop_not_assoc;
1207         unsigned int tx_handlers_drop_unauth_port;
1208         unsigned int rx_handlers_drop;
1209         unsigned int rx_handlers_queued;
1210         unsigned int rx_handlers_drop_nullfunc;
1211         unsigned int rx_handlers_drop_defrag;
1212         unsigned int rx_handlers_drop_short;
1213         unsigned int tx_expand_skb_head;
1214         unsigned int tx_expand_skb_head_cloned;
1215         unsigned int rx_expand_skb_head;
1216         unsigned int rx_expand_skb_head2;
1217         unsigned int rx_handlers_fragments;
1218         unsigned int tx_status_drop;
1219 #define I802_DEBUG_INC(c) (c)++
1220 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1221 #define I802_DEBUG_INC(c) do { } while (0)
1222 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1223
1224
1225         int total_ps_buffered; /* total number of all buffered unicast and
1226                                 * multicast packets for power saving stations
1227                                 */
1228
1229         bool pspolling;
1230         bool offchannel_ps_enabled;
1231         /*
1232          * PS can only be enabled when we have exactly one managed
1233          * interface (and monitors) in PS, this then points there.
1234          */
1235         struct ieee80211_sub_if_data *ps_sdata;
1236         struct work_struct dynamic_ps_enable_work;
1237         struct work_struct dynamic_ps_disable_work;
1238         struct timer_list dynamic_ps_timer;
1239         struct notifier_block network_latency_notifier;
1240         struct notifier_block ifa_notifier;
1241         struct notifier_block ifa6_notifier;
1242
1243         /*
1244          * The dynamic ps timeout configured from user space via WEXT -
1245          * this will override whatever chosen by mac80211 internally.
1246          */
1247         int dynamic_ps_forced_timeout;
1248
1249         int user_power_level; /* in dBm, for all interfaces */
1250
1251         enum ieee80211_smps_mode smps_mode;
1252
1253         struct work_struct restart_work;
1254
1255 #ifdef CONFIG_MAC80211_DEBUGFS
1256         struct local_debugfsdentries {
1257                 struct dentry *rcdir;
1258                 struct dentry *keys;
1259         } debugfs;
1260 #endif
1261
1262         /*
1263          * Remain-on-channel support
1264          */
1265         struct list_head roc_list;
1266         struct work_struct hw_roc_start, hw_roc_done;
1267         unsigned long hw_roc_start_time;
1268         u64 roc_cookie_counter;
1269
1270         struct idr ack_status_frames;
1271         spinlock_t ack_status_lock;
1272
1273         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1274
1275         struct napi_struct *napi;
1276
1277         /* virtual monitor interface */
1278         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1279         struct cfg80211_chan_def monitor_chandef;
1280 };
1281
1282 static inline struct ieee80211_sub_if_data *
1283 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1284 {
1285         return netdev_priv(dev);
1286 }
1287
1288 static inline struct ieee80211_sub_if_data *
1289 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1290 {
1291         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1292 }
1293
1294 /* this struct represents 802.11n's RA/TID combination */
1295 struct ieee80211_ra_tid {
1296         u8 ra[ETH_ALEN];
1297         u16 tid;
1298 };
1299
1300 /* this struct holds the value parsing from channel switch IE  */
1301 struct ieee80211_csa_ie {
1302         struct cfg80211_chan_def chandef;
1303         u8 mode;
1304         u8 count;
1305         u8 ttl;
1306         u16 pre_value;
1307 };
1308
1309 /* Parsed Information Elements */
1310 struct ieee802_11_elems {
1311         const u8 *ie_start;
1312         size_t total_len;
1313
1314         /* pointers to IEs */
1315         const u8 *ssid;
1316         const u8 *supp_rates;
1317         const u8 *ds_params;
1318         const struct ieee80211_tim_ie *tim;
1319         const u8 *challenge;
1320         const u8 *rsn;
1321         const u8 *erp_info;
1322         const u8 *ext_supp_rates;
1323         const u8 *wmm_info;
1324         const u8 *wmm_param;
1325         const struct ieee80211_ht_cap *ht_cap_elem;
1326         const struct ieee80211_ht_operation *ht_operation;
1327         const struct ieee80211_vht_cap *vht_cap_elem;
1328         const struct ieee80211_vht_operation *vht_operation;
1329         const struct ieee80211_meshconf_ie *mesh_config;
1330         const u8 *mesh_id;
1331         const u8 *peering;
1332         const __le16 *awake_window;
1333         const u8 *preq;
1334         const u8 *prep;
1335         const u8 *perr;
1336         const struct ieee80211_rann_ie *rann;
1337         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1338         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1339         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1340         const u8 *country_elem;
1341         const u8 *pwr_constr_elem;
1342         const struct ieee80211_timeout_interval_ie *timeout_int;
1343         const u8 *opmode_notif;
1344         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1345         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1346
1347         /* length of them, respectively */
1348         u8 ssid_len;
1349         u8 supp_rates_len;
1350         u8 tim_len;
1351         u8 challenge_len;
1352         u8 rsn_len;
1353         u8 ext_supp_rates_len;
1354         u8 wmm_info_len;
1355         u8 wmm_param_len;
1356         u8 mesh_id_len;
1357         u8 peering_len;
1358         u8 preq_len;
1359         u8 prep_len;
1360         u8 perr_len;
1361         u8 country_elem_len;
1362
1363         /* whether a parse error occurred while retrieving these elements */
1364         bool parse_error;
1365 };
1366
1367 static inline struct ieee80211_local *hw_to_local(
1368         struct ieee80211_hw *hw)
1369 {
1370         return container_of(hw, struct ieee80211_local, hw);
1371 }
1372
1373
1374 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1375 {
1376         return ether_addr_equal(raddr, addr) ||
1377                is_broadcast_ether_addr(raddr);
1378 }
1379
1380 static inline bool
1381 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1382 {
1383         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1384                      status->flag & RX_FLAG_MACTIME_END);
1385         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1386 }
1387
1388 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1389                                      struct ieee80211_rx_status *status,
1390                                      unsigned int mpdu_len,
1391                                      unsigned int mpdu_offset);
1392 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1393 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1394 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1395                                       u32 changed);
1396 void ieee80211_configure_filter(struct ieee80211_local *local);
1397 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1398
1399 /* STA code */
1400 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1401 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1402                        struct cfg80211_auth_request *req);
1403 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1404                         struct cfg80211_assoc_request *req);
1405 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1406                          struct cfg80211_deauth_request *req);
1407 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1408                            struct cfg80211_disassoc_request *req);
1409 void ieee80211_send_pspoll(struct ieee80211_local *local,
1410                            struct ieee80211_sub_if_data *sdata);
1411 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1412 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1413 int ieee80211_max_network_latency(struct notifier_block *nb,
1414                                   unsigned long data, void *dummy);
1415 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1416 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1417 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1418                                   struct sk_buff *skb);
1419 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1420 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1421 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1422 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1423                                   __le16 fc, bool acked);
1424 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1425 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1426
1427 /* IBSS code */
1428 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1429 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1430 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1431                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1432 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1433                         struct cfg80211_ibss_params *params);
1434 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1435 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1436 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1437                                    struct sk_buff *skb);
1438 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1439                               struct cfg80211_csa_settings *csa_settings);
1440 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1441 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1442
1443 /* mesh code */
1444 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1445 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1446                                    struct sk_buff *skb);
1447 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1448                               struct cfg80211_csa_settings *csa_settings);
1449 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1450
1451 /* scan/BSS handling */
1452 void ieee80211_scan_work(struct work_struct *work);
1453 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1454                                 const u8 *ssid, u8 ssid_len,
1455                                 struct ieee80211_channel *chan,
1456                                 enum nl80211_bss_scan_width scan_width);
1457 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1458                            struct cfg80211_scan_request *req);
1459 void ieee80211_scan_cancel(struct ieee80211_local *local);
1460 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1461 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1462
1463 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1464 struct ieee80211_bss *
1465 ieee80211_bss_info_update(struct ieee80211_local *local,
1466                           struct ieee80211_rx_status *rx_status,
1467                           struct ieee80211_mgmt *mgmt,
1468                           size_t len,
1469                           struct ieee802_11_elems *elems,
1470                           struct ieee80211_channel *channel);
1471 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1472                           struct ieee80211_bss *bss);
1473
1474 /* scheduled scan handling */
1475 int
1476 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1477                                      struct cfg80211_sched_scan_request *req);
1478 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1479                                        struct cfg80211_sched_scan_request *req);
1480 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1481 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1482 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1483
1484 /* off-channel helpers */
1485 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1486 void ieee80211_offchannel_return(struct ieee80211_local *local);
1487 void ieee80211_roc_setup(struct ieee80211_local *local);
1488 void ieee80211_start_next_roc(struct ieee80211_local *local);
1489 void ieee80211_roc_purge(struct ieee80211_local *local,
1490                          struct ieee80211_sub_if_data *sdata);
1491 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1492 void ieee80211_sw_roc_work(struct work_struct *work);
1493 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1494
1495 /* channel switch handling */
1496 void ieee80211_csa_finalize_work(struct work_struct *work);
1497 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1498                              struct cfg80211_csa_settings *params);
1499
1500 /* interface handling */
1501 int ieee80211_iface_init(void);
1502 void ieee80211_iface_exit(void);
1503 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1504                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1505                      struct vif_params *params);
1506 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1507                              enum nl80211_iftype type);
1508 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1509 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1510 u32 ieee80211_idle_off(struct ieee80211_local *local);
1511 void ieee80211_recalc_idle(struct ieee80211_local *local);
1512 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1513                                     const int offset);
1514 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1515 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1516 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1517 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1518
1519 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1520 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1521
1522 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1523 {
1524         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1525 }
1526
1527 /* tx handling */
1528 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1529 void ieee80211_tx_pending(unsigned long data);
1530 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1531                                          struct net_device *dev);
1532 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1533                                        struct net_device *dev);
1534 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1535                               struct sk_buff_head *skbs);
1536
1537 /* HT */
1538 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1539                                      struct ieee80211_sta_ht_cap *ht_cap);
1540 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1541                                        struct ieee80211_supported_band *sband,
1542                                        const struct ieee80211_ht_cap *ht_cap_ie,
1543                                        struct sta_info *sta);
1544 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1545                           const u8 *da, u16 tid,
1546                           u16 initiator, u16 reason_code);
1547 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1548                                enum ieee80211_smps_mode smps, const u8 *da,
1549                                const u8 *bssid);
1550 void ieee80211_request_smps_ap_work(struct work_struct *work);
1551 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1552 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1553                                    enum ieee80211_smps_mode smps_mode_new);
1554
1555 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1556                                      u16 initiator, u16 reason, bool stop);
1557 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1558                                     u16 initiator, u16 reason, bool stop);
1559 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1560                                          enum ieee80211_agg_stop_reason reason);
1561 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1562                              struct sta_info *sta,
1563                              struct ieee80211_mgmt *mgmt, size_t len);
1564 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1565                                   struct sta_info *sta,
1566                                   struct ieee80211_mgmt *mgmt,
1567                                   size_t len);
1568 void ieee80211_process_addba_request(struct ieee80211_local *local,
1569                                      struct sta_info *sta,
1570                                      struct ieee80211_mgmt *mgmt,
1571                                      size_t len);
1572
1573 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1574                                    enum ieee80211_agg_stop_reason reason);
1575 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1576                                     enum ieee80211_agg_stop_reason reason);
1577 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1578 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1579 void ieee80211_ba_session_work(struct work_struct *work);
1580 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1581 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1582
1583 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1584
1585 /* VHT */
1586 void
1587 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1588                                     struct ieee80211_supported_band *sband,
1589                                     const struct ieee80211_vht_cap *vht_cap_ie,
1590                                     struct sta_info *sta);
1591 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1592 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1593 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1594                                   struct sta_info *sta, u8 opmode,
1595                                   enum ieee80211_band band, bool nss_only);
1596 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1597                                  struct sta_info *sta, u8 opmode,
1598                                  enum ieee80211_band band, bool nss_only);
1599 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1600                                       struct ieee80211_sta_vht_cap *vht_cap);
1601
1602 /* Spectrum management */
1603 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1604                                        struct ieee80211_mgmt *mgmt,
1605                                        size_t len);
1606 /**
1607  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1608  * @sdata: the sdata of the interface which has received the frame
1609  * @elems: parsed 802.11 elements received with the frame
1610  * @beacon: indicates if the frame was a beacon or probe response
1611  * @current_band: indicates the current band
1612  * @sta_flags: contains information about own capabilities and restrictions
1613  *      to decide which channel switch announcements can be accepted. Only the
1614  *      following subset of &enum ieee80211_sta_flags are evaluated:
1615  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1616  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1617  *      %IEEE80211_STA_DISABLE_160MHZ.
1618  * @bssid: the currently connected bssid (for reporting)
1619  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1620         All of them will be filled with if success only.
1621  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1622  */
1623 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1624                                  struct ieee802_11_elems *elems, bool beacon,
1625                                  enum ieee80211_band current_band,
1626                                  u32 sta_flags, u8 *bssid,
1627                                  struct ieee80211_csa_ie *csa_ie);
1628
1629 /* Suspend/resume and hw reconfiguration */
1630 int ieee80211_reconfig(struct ieee80211_local *local);
1631 void ieee80211_stop_device(struct ieee80211_local *local);
1632
1633 int __ieee80211_suspend(struct ieee80211_hw *hw,
1634                         struct cfg80211_wowlan *wowlan);
1635
1636 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1637 {
1638         struct ieee80211_local *local = hw_to_local(hw);
1639
1640         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1641                 "%s: resume with hardware scan still in progress\n",
1642                 wiphy_name(hw->wiphy));
1643
1644         return ieee80211_reconfig(hw_to_local(hw));
1645 }
1646
1647 /* utility functions/constants */
1648 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1649 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1650                         enum nl80211_iftype type);
1651 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1652                              int rate, int erp, int short_preamble,
1653                              int shift);
1654 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1655                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1656                                      gfp_t gfp);
1657 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1658                                bool bss_notify);
1659 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1660                     enum ieee80211_band band);
1661
1662 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1663                                  struct sk_buff *skb, int tid,
1664                                  enum ieee80211_band band);
1665
1666 static inline void
1667 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1668                           struct sk_buff *skb, int tid,
1669                           enum ieee80211_band band)
1670 {
1671         rcu_read_lock();
1672         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1673         rcu_read_unlock();
1674 }
1675
1676 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1677                                         struct sk_buff *skb, int tid)
1678 {
1679         struct ieee80211_chanctx_conf *chanctx_conf;
1680
1681         rcu_read_lock();
1682         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1683         if (WARN_ON(!chanctx_conf)) {
1684                 rcu_read_unlock();
1685                 kfree_skb(skb);
1686                 return;
1687         }
1688
1689         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1690                                     chanctx_conf->def.chan->band);
1691         rcu_read_unlock();
1692 }
1693
1694 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1695                                     struct sk_buff *skb)
1696 {
1697         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1698         ieee80211_tx_skb_tid(sdata, skb, 7);
1699 }
1700
1701 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1702                                struct ieee802_11_elems *elems,
1703                                u64 filter, u32 crc);
1704 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1705                                           bool action,
1706                                           struct ieee802_11_elems *elems)
1707 {
1708         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1709 }
1710
1711 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1712 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1713 void ieee80211_dynamic_ps_timer(unsigned long data);
1714 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1715                              struct ieee80211_sub_if_data *sdata,
1716                              int powersave);
1717 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1718                              struct ieee80211_hdr *hdr);
1719 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1720                              struct ieee80211_hdr *hdr, bool ack);
1721
1722 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1723                                      unsigned long queues,
1724                                      enum queue_stop_reason reason,
1725                                      bool refcounted);
1726 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1727                                struct ieee80211_sub_if_data *sdata,
1728                                enum queue_stop_reason reason);
1729 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1730                                struct ieee80211_sub_if_data *sdata,
1731                                enum queue_stop_reason reason);
1732 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1733                                      unsigned long queues,
1734                                      enum queue_stop_reason reason,
1735                                      bool refcounted);
1736 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1737                                     enum queue_stop_reason reason,
1738                                     bool refcounted);
1739 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1740                                     enum queue_stop_reason reason,
1741                                     bool refcounted);
1742 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1743 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1744                                struct sk_buff *skb);
1745 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1746                                 struct sk_buff_head *skbs);
1747 void ieee80211_flush_queues(struct ieee80211_local *local,
1748                             struct ieee80211_sub_if_data *sdata);
1749
1750 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1751                          u16 transaction, u16 auth_alg, u16 status,
1752                          const u8 *extra, size_t extra_len, const u8 *bssid,
1753                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1754                          u32 tx_flags);
1755 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1756                                     const u8 *bssid, u16 stype, u16 reason,
1757                                     bool send_frame, u8 *frame_buf);
1758 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1759                              size_t buffer_len, const u8 *ie, size_t ie_len,
1760                              enum ieee80211_band band, u32 rate_mask,
1761                              struct cfg80211_chan_def *chandef);
1762 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1763                                           u8 *dst, u32 ratemask,
1764                                           struct ieee80211_channel *chan,
1765                                           const u8 *ssid, size_t ssid_len,
1766                                           const u8 *ie, size_t ie_len,
1767                                           bool directed);
1768 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1769                               const u8 *ssid, size_t ssid_len,
1770                               const u8 *ie, size_t ie_len,
1771                               u32 ratemask, bool directed, u32 tx_flags,
1772                               struct ieee80211_channel *channel, bool scan);
1773
1774 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1775                             struct ieee802_11_elems *elems,
1776                             enum ieee80211_band band, u32 *basic_rates);
1777 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1778                                  enum ieee80211_smps_mode smps_mode);
1779 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1780                                 enum ieee80211_smps_mode smps_mode);
1781 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1782 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1783
1784 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1785                           const u8 *ids, int n_ids, size_t offset);
1786 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1787 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1788                               u16 cap);
1789 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1790                                const struct cfg80211_chan_def *chandef,
1791                                u16 prot_mode);
1792 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1793                                u32 cap);
1794 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1795                              const struct ieee80211_supported_band *sband,
1796                              const u8 *srates, int srates_len, u32 *rates);
1797 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1798                             struct sk_buff *skb, bool need_basic,
1799                             enum ieee80211_band band);
1800 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1801                                 struct sk_buff *skb, bool need_basic,
1802                                 enum ieee80211_band band);
1803
1804 /* channel management */
1805 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1806                                   const struct ieee80211_ht_operation *ht_oper,
1807                                   struct cfg80211_chan_def *chandef);
1808 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1809
1810 int __must_check
1811 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1812                           const struct cfg80211_chan_def *chandef,
1813                           enum ieee80211_chanctx_mode mode);
1814 int __must_check
1815 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1816                               const struct cfg80211_chan_def *chandef,
1817                               enum ieee80211_chanctx_mode mode,
1818                               bool radar_required);
1819 int __must_check
1820 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata,
1821                                    u32 *changed);
1822 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1823
1824 int __must_check
1825 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1826                                const struct cfg80211_chan_def *chandef,
1827                                u32 *changed);
1828 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1829 int __must_check
1830 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1831                              u32 *changed);
1832 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1833 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1834 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1835                                          bool clear);
1836 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1837                                struct ieee80211_chanctx *ctx);
1838
1839 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1840                                    struct ieee80211_chanctx *chanctx);
1841 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1842                                       struct ieee80211_chanctx *ctx);
1843
1844 void ieee80211_dfs_cac_timer(unsigned long data);
1845 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1846 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1847 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1848 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1849                               struct cfg80211_csa_settings *csa_settings);
1850
1851 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1852 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1853 const struct ieee80211_cipher_scheme *
1854 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1855                  enum nl80211_iftype iftype);
1856 int ieee80211_cs_headroom(struct ieee80211_local *local,
1857                           struct cfg80211_crypto_settings *crypto,
1858                           enum nl80211_iftype iftype);
1859 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1860                            struct ieee80211_sub_if_data *sdata);
1861 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1862                                  const struct cfg80211_chan_def *chandef,
1863                                  enum ieee80211_chanctx_mode chanmode,
1864                                  u8 radar_detect);
1865 int ieee80211_max_num_channels(struct ieee80211_local *local);
1866
1867 /* TDLS */
1868 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1869                         const u8 *peer, u8 action_code, u8 dialog_token,
1870                         u16 status_code, u32 peer_capability,
1871                         bool initiator, const u8 *extra_ies,
1872                         size_t extra_ies_len);
1873 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1874                         const u8 *peer, enum nl80211_tdls_operation oper);
1875
1876
1877 extern const struct ethtool_ops ieee80211_ethtool_ops;
1878
1879 #ifdef CONFIG_MAC80211_NOINLINE
1880 #define debug_noinline noinline
1881 #else
1882 #define debug_noinline
1883 #endif
1884
1885 #endif /* IEEE80211_I_H */
1886 void ieee80211_tdls_peer_del_work(struct work_struct *wk);