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  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #ifndef IEEE80211_I_H
  14 #define IEEE80211_I_H
  15
  16 #include <linux/kernel.h>
  17 #include <linux/device.h>
  18 #include <linux/if_ether.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/list.h>
  21 #include <linux/netdevice.h>
  22 #include <linux/skbuff.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/types.h>
  25 #include <linux/spinlock.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/leds.h>
  28 #include <linux/idr.h>
  29 #include <net/ieee80211_radiotap.h>
  30 #include <net/cfg80211.h>
  31 #include <net/mac80211.h>
  32 #include "key.h"
  33 #include "sta_info.h"
  34 #include "debug.h"
  35
  36 struct ieee80211_local;
  37
  38 /* Maximum number of broadcast/multicast frames to buffer when some of the
  39  * associated stations are using power saving. */
  40 #define AP_MAX_BC_BUFFER 128
  41
  42 /* Maximum number of frames buffered to all STAs, including multicast frames.
  43  * Note: increasing this limit increases the potential memory requirement. Each
  44  * frame can be up to about 2 kB long. */
  45 #define TOTAL_MAX_TX_BUFFER 512
  46
  47 /* Required encryption head and tailroom */
  48 #define IEEE80211_ENCRYPT_HEADROOM 8
  49 #define IEEE80211_ENCRYPT_TAILROOM 18
  50
  51 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  52  * reception of at least three fragmented frames. This limit can be increased
  53  * by changing this define, at the cost of slower frame reassembly and
  54  * increased memory use (about 2 kB of RAM per entry). */
  55 #define IEEE80211_FRAGMENT_MAX 4
  56
  57 /* power level hasn't been configured (or set to automatic) */
  58 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  59
  60 /*
  61  * Some APs experience problems when working with U-APSD. Decrease the
  62  * probability of that happening by using legacy mode for all ACs but VO.
  63  * The AP that caused us trouble was a Cisco 4410N. It ignores our
  64  * setting, and always treats non-VO ACs as legacy.
  65  */
  66 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  67         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  68
  69 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  70         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  71
  72 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  73
  74 struct ieee80211_fragment_entry {
  75         unsigned long first_frag_time;
  76         unsigned int seq;
  77         unsigned int rx_queue;
  78         unsigned int last_frag;
  79         unsigned int extra_len;
  80         struct sk_buff_head skb_list;
  81         int ccmp; /* Whether fragments were encrypted with CCMP */
  82         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  83 };
  84
  85
  86 struct ieee80211_bss {
  87         u32 device_ts_beacon, device_ts_presp;
  88
  89         bool wmm_used;
  90         bool uapsd_supported;
  91
  92 #define IEEE80211_MAX_SUPP_RATES 32
  93         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  94         size_t supp_rates_len;
  95         struct ieee80211_rate *beacon_rate;
  96
  97         /*
  98          * During association, we save an ERP value from a probe response so
  99          * that we can feed ERP info to the driver when handling the
 100          * association completes. these fields probably won't be up-to-date
 101          * otherwise, you probably don't want to use them.
 102          */
 103         bool has_erp_value;
 104         u8 erp_value;
 105
 106         /* Keep track of the corruption of the last beacon/probe response. */
 107         u8 corrupt_data;
 108
 109         /* Keep track of what bits of information we have valid info for. */
 110         u8 valid_data;
 111 };
 112
 113 /**
 114  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 115  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 116  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 117  *
 118  * These are bss flags that are attached to a bss in the
 119  * @corrupt_data field of &struct ieee80211_bss.
 120  */
 121 enum ieee80211_bss_corrupt_data_flags {
 122         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 123         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 124 };
 125
 126 /**
 127  * enum ieee80211_valid_data_flags - BSS valid data flags
 128  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 129  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 130  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 131  *
 132  * These are bss flags that are attached to a bss in the
 133  * @valid_data field of &struct ieee80211_bss.  They show which parts
 134  * of the data structure were received as a result of an un-corrupted
 135  * beacon/probe response.
 136  */
 137 enum ieee80211_bss_valid_data_flags {
 138         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 139         IEEE80211_BSS_VALID_RATES               = BIT(2),
 140         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 141 };
 142
 143 typedef unsigned __bitwise__ ieee80211_tx_result;
 144 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 145 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 146 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 147
 148 #define IEEE80211_TX_UNICAST            BIT(1)
 149 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 150
 151 struct ieee80211_tx_data {
 152         struct sk_buff *skb;
 153         struct sk_buff_head skbs;
 154         struct ieee80211_local *local;
 155         struct ieee80211_sub_if_data *sdata;
 156         struct sta_info *sta;
 157         struct ieee80211_key *key;
 158         struct ieee80211_tx_rate rate;
 159
 160         unsigned int flags;
 161 };
 162
 163
 164 typedef unsigned __bitwise__ ieee80211_rx_result;
 165 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 166 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 167 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 168 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 169
 170 /**
 171  * enum ieee80211_packet_rx_flags - packet RX flags
 172  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 173  *      (incl. multicast frames)
 174  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 175  * @IEEE80211_RX_AMSDU: a-MSDU packet
 176  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 177  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 178  *
 179  * These are per-frame flags that are attached to a frame in the
 180  * @rx_flags field of &struct ieee80211_rx_status.
 181  */
 182 enum ieee80211_packet_rx_flags {
 183         IEEE80211_RX_RA_MATCH                   = BIT(1),
 184         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 185         IEEE80211_RX_AMSDU                      = BIT(3),
 186         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 187         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 188 };
 189
 190 /**
 191  * enum ieee80211_rx_flags - RX data flags
 192  *
 193  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 194  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 195  *      to cfg80211_report_obss_beacon().
 196  *
 197  * These flags are used across handling multiple interfaces
 198  * for a single frame.
 199  */
 200 enum ieee80211_rx_flags {
 201         IEEE80211_RX_CMNTR              = BIT(0),
 202         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 203 };
 204
 205 struct ieee80211_rx_data {
 206         struct sk_buff *skb;
 207         struct ieee80211_local *local;
 208         struct ieee80211_sub_if_data *sdata;
 209         struct sta_info *sta;
 210         struct ieee80211_key *key;
 211
 212         unsigned int flags;
 213
 214         /*
 215          * Index into sequence numbers array, 0..16
 216          * since the last (16) is used for non-QoS,
 217          * will be 16 on non-QoS frames.
 218          */
 219         int seqno_idx;
 220
 221         /*
 222          * Index into the security IV/PN arrays, 0..16
 223          * since the last (16) is used for CCMP-encrypted
 224          * management frames, will be set to 16 on mgmt
 225          * frames and 0 on non-QoS frames.
 226          */
 227         int security_idx;
 228
 229         u32 tkip_iv32;
 230         u16 tkip_iv16;
 231 };
 232
 233 struct ieee80211_csa_settings {
 234         const u16 *counter_offsets_beacon;
 235         const u16 *counter_offsets_presp;
 236
 237         int n_counter_offsets_beacon;
 238         int n_counter_offsets_presp;
 239
 240         u8 count;
 241 };
 242
 243 struct beacon_data {
 244         u8 *head, *tail;
 245         int head_len, tail_len;
 246         struct ieee80211_meshconf_ie *meshconf;
 247         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 248         u8 csa_current_counter;
 249         struct rcu_head rcu_head;
 250 };
 251
 252 struct probe_resp {
 253         struct rcu_head rcu_head;
 254         int len;
 255         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 256         u8 data[0];
 257 };
 258
 259 struct ps_data {
 260         /* yes, this looks ugly, but guarantees that we can later use
 261          * bitmap_empty :)
 262          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 263         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 264                         __aligned(__alignof__(unsigned long));
 265         struct sk_buff_head bc_buf;
 266         atomic_t num_sta_ps; /* number of stations in PS mode */
 267         int dtim_count;
 268         bool dtim_bc_mc;
 269 };
 270
 271 struct ieee80211_if_ap {
 272         struct beacon_data __rcu *beacon;
 273         struct probe_resp __rcu *probe_resp;
 274
 275         /* to be used after channel switch. */
 276         struct cfg80211_beacon_data *next_beacon;
 277         struct list_head vlans; /* write-protected with RTNL and local->mtx */
 278
 279         struct ps_data ps;
 280         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 281         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 282                          driver_smps_mode; /* smps mode request */
 283
 284         struct work_struct request_smps_work;
 285 };
 286
 287 struct ieee80211_if_wds {
 288         struct sta_info *sta;
 289         u8 remote_addr[ETH_ALEN];
 290 };
 291
 292 struct ieee80211_if_vlan {
 293         struct list_head list; /* write-protected with RTNL and local->mtx */
 294
 295         /* used for all tx if the VLAN is configured to 4-addr mode */
 296         struct sta_info __rcu *sta;
 297 };
 298
 299 struct mesh_stats {
 300         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 301         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 302         __u32 fwded_frames;             /* Mesh total forwarded frames */
 303         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 304         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 305         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 306 };
 307
 308 #define PREQ_Q_F_START          0x1
 309 #define PREQ_Q_F_REFRESH        0x2
 310 struct mesh_preq_queue {
 311         struct list_head list;
 312         u8 dst[ETH_ALEN];
 313         u8 flags;
 314 };
 315
 316 #if HZ/100 == 0
 317 #define IEEE80211_ROC_MIN_LEFT  1
 318 #else
 319 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 320 #endif
 321
 322 struct ieee80211_roc_work {
 323         struct list_head list;
 324         struct list_head dependents;
 325
 326         struct delayed_work work;
 327
 328         struct ieee80211_sub_if_data *sdata;
 329
 330         struct ieee80211_channel *chan;
 331
 332         bool started, abort, hw_begun, notified;
 333         bool to_be_freed;
 334         bool on_channel;
 335
 336         unsigned long hw_start_time;
 337
 338         u32 duration, req_duration;
 339         struct sk_buff *frame;
 340         u64 cookie, mgmt_tx_cookie;
 341         enum ieee80211_roc_type type;
 342 };
 343
 344 /* flags used in struct ieee80211_if_managed.flags */
 345 enum ieee80211_sta_flags {
 346         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 347         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 348         IEEE80211_STA_DISABLE_HT        = BIT(4),
 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         IEEE80211_STA_ENABLE_RRM        = BIT(15),
 359 };
 360
 361 struct ieee80211_mgd_auth_data {
 362         struct cfg80211_bss *bss;
 363         unsigned long timeout;
 364         int tries;
 365         u16 algorithm, expected_transaction;
 366
 367         u8 key[WLAN_KEY_LEN_WEP104];
 368         u8 key_len, key_idx;
 369         bool done;
 370         bool timeout_started;
 371
 372         u16 sae_trans, sae_status;
 373         size_t data_len;
 374         u8 data[];
 375 };
 376
 377 struct ieee80211_mgd_assoc_data {
 378         struct cfg80211_bss *bss;
 379         const u8 *supp_rates;
 380
 381         unsigned long timeout;
 382         int tries;
 383
 384         u16 capability;
 385         u8 prev_bssid[ETH_ALEN];
 386         u8 ssid[IEEE80211_MAX_SSID_LEN];
 387         u8 ssid_len;
 388         u8 supp_rates_len;
 389         bool wmm, uapsd;
 390         bool need_beacon;
 391         bool synced;
 392         bool timeout_started;
 393
 394         u8 ap_ht_param;
 395
 396         struct ieee80211_vht_cap ap_vht_cap;
 397
 398         size_t ie_len;
 399         u8 ie[];
 400 };
 401
 402 struct ieee80211_sta_tx_tspec {
 403         /* timestamp of the first packet in the time slice */
 404         unsigned long time_slice_start;
 405
 406         u32 admitted_time; /* in usecs, unlike over the air */
 407         u8 tsid;
 408         s8 up; /* signed to be able to invalidate with -1 during teardown */
 409
 410         /* consumed TX time in microseconds in the time slice */
 411         u32 consumed_tx_time;
 412         enum {
 413                 TX_TSPEC_ACTION_NONE = 0,
 414                 TX_TSPEC_ACTION_DOWNGRADE,
 415                 TX_TSPEC_ACTION_STOP_DOWNGRADE,
 416         } action;
 417         bool downgraded;
 418 };
 419
 420 struct ieee80211_if_managed {
 421         struct timer_list timer;
 422         struct timer_list conn_mon_timer;
 423         struct timer_list bcn_mon_timer;
 424         struct timer_list chswitch_timer;
 425         struct work_struct monitor_work;
 426         struct work_struct chswitch_work;
 427         struct work_struct beacon_connection_loss_work;
 428         struct work_struct csa_connection_drop_work;
 429
 430         unsigned long beacon_timeout;
 431         unsigned long probe_timeout;
 432         int probe_send_count;
 433         bool nullfunc_failed;
 434         bool connection_loss;
 435
 436         struct cfg80211_bss *associated;
 437         struct ieee80211_mgd_auth_data *auth_data;
 438         struct ieee80211_mgd_assoc_data *assoc_data;
 439
 440         u8 bssid[ETH_ALEN];
 441
 442         u16 aid;
 443
 444         bool powersave; /* powersave requested for this iface */
 445         bool broken_ap; /* AP is broken -- turn off powersave */
 446         bool have_beacon;
 447         u8 dtim_period;
 448         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 449                                  driver_smps_mode; /* smps mode request */
 450
 451         struct work_struct request_smps_work;
 452
 453         unsigned int flags;
 454
 455         bool csa_waiting_bcn;
 456
 457         bool beacon_crc_valid;
 458         u32 beacon_crc;
 459
 460         bool status_acked;
 461         bool status_received;
 462         __le16 status_fc;
 463
 464         enum {
 465                 IEEE80211_MFP_DISABLED,
 466                 IEEE80211_MFP_OPTIONAL,
 467                 IEEE80211_MFP_REQUIRED
 468         } mfp; /* management frame protection */
 469
 470         /*
 471          * Bitmask of enabled u-apsd queues,
 472          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 473          * to take effect.
 474          */
 475         unsigned int uapsd_queues;
 476
 477         /*
 478          * Maximum number of buffered frames AP can deliver during a
 479          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 480          * Needs a new association to take effect.
 481          */
 482         unsigned int uapsd_max_sp_len;
 483
 484         int wmm_last_param_set;
 485
 486         u8 use_4addr;
 487
 488         s16 p2p_noa_index;
 489
 490         /* Signal strength from the last Beacon frame in the current BSS. */
 491         int last_beacon_signal;
 492
 493         /*
 494          * Weighted average of the signal strength from Beacon frames in the
 495          * current BSS. This is in units of 1/16 of the signal unit to maintain
 496          * accuracy and to speed up calculations, i.e., the value need to be
 497          * divided by 16 to get the actual value.
 498          */
 499         int ave_beacon_signal;
 500
 501         /*
 502          * Number of Beacon frames used in ave_beacon_signal. This can be used
 503          * to avoid generating less reliable cqm events that would be based
 504          * only on couple of received frames.
 505          */
 506         unsigned int count_beacon_signal;
 507
 508         /*
 509          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 510          * that triggered a cqm event. 0 indicates that no event has been
 511          * generated for the current association.
 512          */
 513         int last_cqm_event_signal;
 514
 515         /*
 516          * State variables for keeping track of RSSI of the AP currently
 517          * connected to and informing driver when RSSI has gone
 518          * below/above a certain threshold.
 519          */
 520         int rssi_min_thold, rssi_max_thold;
 521         int last_ave_beacon_signal;
 522
 523         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 524         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 525         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 526         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 527
 528         u8 tdls_peer[ETH_ALEN] __aligned(2);
 529         struct delayed_work tdls_peer_del_work;
 530
 531         /* WMM-AC TSPEC support */
 532         struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
 533         /* Use a separate work struct so that we can do something here
 534          * while the sdata->work is flushing the queues, for example.
 535          * otherwise, in scenarios where we hardly get any traffic out
 536          * on the BE queue, but there's a lot of VO traffic, we might
 537          * get stuck in a downgraded situation and flush takes forever.
 538          */
 539         struct delayed_work tx_tspec_wk;
 540 };
 541
 542 struct ieee80211_if_ibss {
 543         struct timer_list timer;
 544         struct work_struct csa_connection_drop_work;
 545
 546         unsigned long last_scan_completed;
 547
 548         u32 basic_rates;
 549
 550         bool fixed_bssid;
 551         bool fixed_channel;
 552         bool privacy;
 553
 554         bool control_port;
 555         bool userspace_handles_dfs;
 556
 557         u8 bssid[ETH_ALEN] __aligned(2);
 558         u8 ssid[IEEE80211_MAX_SSID_LEN];
 559         u8 ssid_len, ie_len;
 560         u8 *ie;
 561         struct cfg80211_chan_def chandef;
 562
 563         unsigned long ibss_join_req;
 564         /* probe response/beacon for IBSS */
 565         struct beacon_data __rcu *presp;
 566
 567         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 568         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 569
 570         spinlock_t incomplete_lock;
 571         struct list_head incomplete_stations;
 572
 573         enum {
 574                 IEEE80211_IBSS_MLME_SEARCH,
 575                 IEEE80211_IBSS_MLME_JOINED,
 576         } state;
 577 };
 578
 579 /**
 580  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 581  *
 582  * these declarations define the interface, which enables
 583  * vendor-specific mesh synchronization
 584  *
 585  */
 586 struct ieee802_11_elems;
 587 struct ieee80211_mesh_sync_ops {
 588         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 589                              u16 stype,
 590                              struct ieee80211_mgmt *mgmt,
 591                              struct ieee802_11_elems *elems,
 592                              struct ieee80211_rx_status *rx_status);
 593
 594         /* should be called with beacon_data under RCU read lock */
 595         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 596                             struct beacon_data *beacon);
 597         /* add other framework functions here */
 598 };
 599
 600 struct mesh_csa_settings {
 601         struct rcu_head rcu_head;
 602         struct cfg80211_csa_settings settings;
 603 };
 604
 605 struct ieee80211_if_mesh {
 606         struct timer_list housekeeping_timer;
 607         struct timer_list mesh_path_timer;
 608         struct timer_list mesh_path_root_timer;
 609
 610         unsigned long wrkq_flags;
 611         unsigned long mbss_changed;
 612
 613         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 614         size_t mesh_id_len;
 615         /* Active Path Selection Protocol Identifier */
 616         u8 mesh_pp_id;
 617         /* Active Path Selection Metric Identifier */
 618         u8 mesh_pm_id;
 619         /* Congestion Control Mode Identifier */
 620         u8 mesh_cc_id;
 621         /* Synchronization Protocol Identifier */
 622         u8 mesh_sp_id;
 623         /* Authentication Protocol Identifier */
 624         u8 mesh_auth_id;
 625         /* Local mesh Sequence Number */
 626         u32 sn;
 627         /* Last used PREQ ID */
 628         u32 preq_id;
 629         atomic_t mpaths;
 630         /* Timestamp of last SN update */
 631         unsigned long last_sn_update;
 632         /* Time when it's ok to send next PERR */
 633         unsigned long next_perr;
 634         /* Timestamp of last PREQ sent */
 635         unsigned long last_preq;
 636         struct mesh_rmc *rmc;
 637         spinlock_t mesh_preq_queue_lock;
 638         struct mesh_preq_queue preq_queue;
 639         int preq_queue_len;
 640         struct mesh_stats mshstats;
 641         struct mesh_config mshcfg;
 642         atomic_t estab_plinks;
 643         u32 mesh_seqnum;
 644         bool accepting_plinks;
 645         int num_gates;
 646         struct beacon_data __rcu *beacon;
 647         const u8 *ie;
 648         u8 ie_len;
 649         enum {
 650                 IEEE80211_MESH_SEC_NONE = 0x0,
 651                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 652                 IEEE80211_MESH_SEC_SECURED = 0x2,
 653         } security;
 654         bool user_mpm;
 655         /* Extensible Synchronization Framework */
 656         const struct ieee80211_mesh_sync_ops *sync_ops;
 657         s64 sync_offset_clockdrift_max;
 658         spinlock_t sync_offset_lock;
 659         bool adjusting_tbtt;
 660         /* mesh power save */
 661         enum nl80211_mesh_power_mode nonpeer_pm;
 662         int ps_peers_light_sleep;
 663         int ps_peers_deep_sleep;
 664         struct ps_data ps;
 665         /* Channel Switching Support */
 666         struct mesh_csa_settings __rcu *csa;
 667         enum {
 668                 IEEE80211_MESH_CSA_ROLE_NONE,
 669                 IEEE80211_MESH_CSA_ROLE_INIT,
 670                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 671         } csa_role;
 672         u8 chsw_ttl;
 673         u16 pre_value;
 674
 675         /* offset from skb->data while building IE */
 676         int meshconf_offset;
 677 };
 678
 679 #ifdef CONFIG_MAC80211_MESH
 680 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 681         do { (msh)->mshstats.name++; } while (0)
 682 #else
 683 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 684         do { } while (0)
 685 #endif
 686
 687 /**
 688  * enum ieee80211_sub_if_data_flags - virtual interface flags
 689  *
 690  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 691  * @IEEE80211_SDATA_PROMISC: interface is promisc
 692  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 693  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 694  *      associated stations and deliver multicast frames both
 695  *      back to wireless media and to the local net stack.
 696  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 697  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 698  */
 699 enum ieee80211_sub_if_data_flags {
 700         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 701         IEEE80211_SDATA_PROMISC                 = BIT(1),
 702         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 703         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 704         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 705         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 706 };
 707
 708 /**
 709  * enum ieee80211_sdata_state_bits - virtual interface state bits
 710  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 711  *      mirrors netif_running() but is separate for interface type
 712  *      change handling while the interface is up
 713  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 714  *      mode, so queues are stopped
 715  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 716  *      to offchannel, reset when offchannel returns
 717  */
 718 enum ieee80211_sdata_state_bits {
 719         SDATA_STATE_RUNNING,
 720         SDATA_STATE_OFFCHANNEL,
 721         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 722 };
 723
 724 /**
 725  * enum ieee80211_chanctx_mode - channel context configuration mode
 726  *
 727  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 728  *      multiple interfaces
 729  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 730  *      only by a single interface. This can be used for example for
 731  *      non-fixed channel IBSS.
 732  */
 733 enum ieee80211_chanctx_mode {
 734         IEEE80211_CHANCTX_SHARED,
 735         IEEE80211_CHANCTX_EXCLUSIVE
 736 };
 737
 738 /**
 739  * enum ieee80211_chanctx_replace_state - channel context replacement state
 740  *
 741  * This is used for channel context in-place reservations that require channel
 742  * context switch/swap.
 743  *
 744  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 745  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 746  *      by a (not yet registered) channel context pointed by %replace_ctx.
 747  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 748  *      replaces an existing channel context pointed to by %replace_ctx.
 749  */
 750 enum ieee80211_chanctx_replace_state {
 751         IEEE80211_CHANCTX_REPLACE_NONE,
 752         IEEE80211_CHANCTX_WILL_BE_REPLACED,
 753         IEEE80211_CHANCTX_REPLACES_OTHER,
 754 };
 755
 756 struct ieee80211_chanctx {
 757         struct list_head list;
 758         struct rcu_head rcu_head;
 759
 760         struct list_head assigned_vifs;
 761         struct list_head reserved_vifs;
 762
 763         enum ieee80211_chanctx_replace_state replace_state;
 764         struct ieee80211_chanctx *replace_ctx;
 765
 766         enum ieee80211_chanctx_mode mode;
 767         bool driver_present;
 768
 769         struct ieee80211_chanctx_conf conf;
 770 };
 771
 772 struct mac80211_qos_map {
 773         struct cfg80211_qos_map qos_map;
 774         struct rcu_head rcu_head;
 775 };
 776
 777 struct ieee80211_sub_if_data {
 778         struct list_head list;
 779
 780         struct wireless_dev wdev;
 781
 782         /* keys */
 783         struct list_head key_list;
 784
 785         /* count for keys needing tailroom space allocation */
 786         int crypto_tx_tailroom_needed_cnt;
 787         int crypto_tx_tailroom_pending_dec;
 788         struct delayed_work dec_tailroom_needed_wk;
 789
 790         struct net_device *dev;
 791         struct ieee80211_local *local;
 792
 793         unsigned int flags;
 794
 795         unsigned long state;
 796
 797         int drop_unencrypted;
 798
 799         char name[IFNAMSIZ];
 800
 801         /* Fragment table for host-based reassembly */
 802         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 803         unsigned int fragment_next;
 804
 805         /* TID bitmap for NoAck policy */
 806         u16 noack_map;
 807
 808         /* bit field of ACM bits (BIT(802.1D tag)) */
 809         u8 wmm_acm;
 810
 811         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 812         struct ieee80211_key __rcu *default_unicast_key;
 813         struct ieee80211_key __rcu *default_multicast_key;
 814         struct ieee80211_key __rcu *default_mgmt_key;
 815
 816         u16 sequence_number;
 817         __be16 control_port_protocol;
 818         bool control_port_no_encrypt;
 819         int encrypt_headroom;
 820
 821         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 822         struct mac80211_qos_map __rcu *qos_map;
 823
 824         struct work_struct csa_finalize_work;
 825         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 826         struct cfg80211_chan_def csa_chandef;
 827
 828         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 829         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 830
 831         /* context reservation -- protected with chanctx_mtx */
 832         struct ieee80211_chanctx *reserved_chanctx;
 833         struct cfg80211_chan_def reserved_chandef;
 834         bool reserved_radar_required;
 835         bool reserved_ready;
 836
 837         /* used to reconfigure hardware SM PS */
 838         struct work_struct recalc_smps;
 839
 840         struct work_struct work;
 841         struct sk_buff_head skb_queue;
 842
 843         u8 needed_rx_chains;
 844         enum ieee80211_smps_mode smps_mode;
 845
 846         int user_power_level; /* in dBm */
 847         int ap_power_level; /* in dBm */
 848
 849         bool radar_required;
 850         struct delayed_work dfs_cac_timer_work;
 851
 852         /*
 853          * AP this belongs to: self in AP mode and
 854          * corresponding AP in VLAN mode, NULL for
 855          * all others (might be needed later in IBSS)
 856          */
 857         struct ieee80211_if_ap *bss;
 858
 859         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 860         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 861
 862         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 863         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 864
 865         union {
 866                 struct ieee80211_if_ap ap;
 867                 struct ieee80211_if_wds wds;
 868                 struct ieee80211_if_vlan vlan;
 869                 struct ieee80211_if_managed mgd;
 870                 struct ieee80211_if_ibss ibss;
 871                 struct ieee80211_if_mesh mesh;
 872                 u32 mntr_flags;
 873         } u;
 874
 875 #ifdef CONFIG_MAC80211_DEBUGFS
 876         struct {
 877                 struct dentry *subdir_stations;
 878                 struct dentry *default_unicast_key;
 879                 struct dentry *default_multicast_key;
 880                 struct dentry *default_mgmt_key;
 881         } debugfs;
 882 #endif
 883
 884         /* must be last, dynamically sized area in this! */
 885         struct ieee80211_vif vif;
 886 };
 887
 888 static inline
 889 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 890 {
 891         return container_of(p, struct ieee80211_sub_if_data, vif);
 892 }
 893
 894 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 895         __acquires(&sdata->wdev.mtx)
 896 {
 897         mutex_lock(&sdata->wdev.mtx);
 898         __acquire(&sdata->wdev.mtx);
 899 }
 900
 901 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 902         __releases(&sdata->wdev.mtx)
 903 {
 904         mutex_unlock(&sdata->wdev.mtx);
 905         __release(&sdata->wdev.mtx);
 906 }
 907
 908 #define sdata_dereference(p, sdata) \
 909         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 910
 911 static inline void
 912 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 913 {
 914         lockdep_assert_held(&sdata->wdev.mtx);
 915 }
 916
 917 static inline enum ieee80211_band
 918 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 919 {
 920         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 921         struct ieee80211_chanctx_conf *chanctx_conf;
 922
 923         rcu_read_lock();
 924         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 925         if (!WARN_ON(!chanctx_conf))
 926                 band = chanctx_conf->def.chan->band;
 927         rcu_read_unlock();
 928
 929         return band;
 930 }
 931
 932 static inline int
 933 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 934 {
 935         switch (chandef->width) {
 936         case NL80211_CHAN_WIDTH_5:
 937                 return 2;
 938         case NL80211_CHAN_WIDTH_10:
 939                 return 1;
 940         default:
 941                 return 0;
 942         }
 943 }
 944
 945 static inline int
 946 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 947 {
 948         struct ieee80211_chanctx_conf *chanctx_conf;
 949         int shift = 0;
 950
 951         rcu_read_lock();
 952         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 953         if (chanctx_conf)
 954                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 955         rcu_read_unlock();
 956
 957         return shift;
 958 }
 959
 960 struct ieee80211_rx_agg {
 961         u8 addr[ETH_ALEN];
 962         u16 tid;
 963 };
 964
 965 enum sdata_queue_type {
 966         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 967         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 968         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 969         IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
 970         IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
 971 };
 972
 973 enum {
 974         IEEE80211_RX_MSG        = 1,
 975         IEEE80211_TX_STATUS_MSG = 2,
 976 };
 977
 978 enum queue_stop_reason {
 979         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 980         IEEE80211_QUEUE_STOP_REASON_PS,
 981         IEEE80211_QUEUE_STOP_REASON_CSA,
 982         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 983         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 984         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 985         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
 986         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 987         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
 988
 989         IEEE80211_QUEUE_STOP_REASONS,
 990 };
 991
 992 #ifdef CONFIG_MAC80211_LEDS
 993 struct tpt_led_trigger {
 994         struct led_trigger trig;
 995         char name[32];
 996         const struct ieee80211_tpt_blink *blink_table;
 997         unsigned int blink_table_len;
 998         struct timer_list timer;
 999         unsigned long prev_traffic;
1000         unsigned long tx_bytes, rx_bytes;
1001         unsigned int active, want;
1002         bool running;
1003 };
1004 #endif
1005
1006 /*
1007  * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
1008  *
1009  * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
1010  * certain latency range (in Milliseconds). Each station that uses these
1011  * ranges will have bins to count the amount of frames received in that range.
1012  * The user can configure the ranges via debugfs.
1013  * If ranges is NULL then Tx latency statistics bins are disabled for all
1014  * stations.
1015  *
1016  * @n_ranges: number of ranges that are taken in account
1017  * @ranges: the ranges that the user requested or NULL if disabled.
1018  */
1019 struct ieee80211_tx_latency_bin_ranges {
1020         int n_ranges;
1021         u32 ranges[];
1022 };
1023
1024 /**
1025  * mac80211 scan flags - currently active scan mode
1026  *
1027  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1028  *      well be on the operating channel
1029  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1030  *      determine if we are on the operating channel or not
1031  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1032  *      channel. This should not interrupt normal traffic.
1033  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1034  *      that the scan completed.
1035  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1036  *      a scan complete for an aborted scan.
1037  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1038  *      cancelled.
1039  */
1040 enum {
1041         SCAN_SW_SCANNING,
1042         SCAN_HW_SCANNING,
1043         SCAN_ONCHANNEL_SCANNING,
1044         SCAN_COMPLETED,
1045         SCAN_ABORTED,
1046         SCAN_HW_CANCELLED,
1047 };
1048
1049 /**
1050  * enum mac80211_scan_state - scan state machine states
1051  *
1052  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1053  *      determines if we should keep on scanning or switch back to the
1054  *      operating channel
1055  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1056  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1057  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1058  *      send out data
1059  * @SCAN_RESUME: Resume the scan and scan the next channel
1060  * @SCAN_ABORT: Abort the scan and go back to operating channel
1061  */
1062 enum mac80211_scan_state {
1063         SCAN_DECISION,
1064         SCAN_SET_CHANNEL,
1065         SCAN_SEND_PROBE,
1066         SCAN_SUSPEND,
1067         SCAN_RESUME,
1068         SCAN_ABORT,
1069 };
1070
1071 struct ieee80211_local {
1072         /* embed the driver visible part.
1073          * don't cast (use the static inlines below), but we keep
1074          * it first anyway so they become a no-op */
1075         struct ieee80211_hw hw;
1076
1077         const struct ieee80211_ops *ops;
1078
1079         /*
1080          * private workqueue to mac80211. mac80211 makes this accessible
1081          * via ieee80211_queue_work()
1082          */
1083         struct workqueue_struct *workqueue;
1084
1085         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1086         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1087         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1088         spinlock_t queue_stop_reason_lock;
1089
1090         int open_count;
1091         int monitors, cooked_mntrs;
1092         /* number of interfaces with corresponding FIF_ flags */
1093         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1094             fif_probe_req;
1095         int probe_req_reg;
1096         unsigned int filter_flags; /* FIF_* */
1097
1098         bool wiphy_ciphers_allocated;
1099
1100         bool use_chanctx;
1101
1102         /* protects the aggregated multicast list and filter calls */
1103         spinlock_t filter_lock;
1104
1105         /* used for uploading changed mc list */
1106         struct work_struct reconfig_filter;
1107
1108         /* aggregated multicast list */
1109         struct netdev_hw_addr_list mc_list;
1110
1111         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1112
1113         /*
1114          * suspended is true if we finished all the suspend _and_ we have
1115          * not yet come up from resume. This is to be used by mac80211
1116          * to ensure driver sanity during suspend and mac80211's own
1117          * sanity. It can eventually be used for WoW as well.
1118          */
1119         bool suspended;
1120
1121         /*
1122          * Resuming is true while suspended, but when we're reprogramming the
1123          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1124          * again even though some other parts of the stack are still suspended
1125          * and we still drop received frames to avoid waking the stack.
1126          */
1127         bool resuming;
1128
1129         /*
1130          * quiescing is true during the suspend process _only_ to
1131          * ease timer cancelling etc.
1132          */
1133         bool quiescing;
1134
1135         /* device is started */
1136         bool started;
1137
1138         /* device is during a HW reconfig */
1139         bool in_reconfig;
1140
1141         /* wowlan is enabled -- don't reconfig on resume */
1142         bool wowlan;
1143
1144         /* DFS/radar detection is enabled */
1145         bool radar_detect_enabled;
1146         struct work_struct radar_detected_work;
1147
1148         /* number of RX chains the hardware has */
1149         u8 rx_chains;
1150
1151         int tx_headroom; /* required headroom for hardware/radiotap */
1152
1153         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1154          * added to skb_queue will be processed, but frames in
1155          * skb_queue_unreliable may be dropped if the total length of these
1156          * queues increases over the limit. */
1157 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1158         struct tasklet_struct tasklet;
1159         struct sk_buff_head skb_queue;
1160         struct sk_buff_head skb_queue_unreliable;
1161
1162         spinlock_t rx_path_lock;
1163
1164         /* Station data */
1165         /*
1166          * The mutex only protects the list, hash table and
1167          * counter, reads are done with RCU.
1168          */
1169         struct mutex sta_mtx;
1170         spinlock_t tim_lock;
1171         unsigned long num_sta;
1172         struct list_head sta_list;
1173         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1174         struct timer_list sta_cleanup;
1175         int sta_generation;
1176
1177         /*
1178          * Tx latency statistics parameters for all stations.
1179          * Can enable via debugfs (NULL when disabled).
1180          */
1181         struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1182
1183         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1184         struct tasklet_struct tx_pending_tasklet;
1185
1186         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1187
1188         /* number of interfaces with corresponding IFF_ flags */
1189         atomic_t iff_allmultis, iff_promiscs;
1190
1191         struct rate_control_ref *rate_ctrl;
1192
1193         struct crypto_cipher *wep_tx_tfm;
1194         struct crypto_cipher *wep_rx_tfm;
1195         u32 wep_iv;
1196
1197         /* see iface.c */
1198         struct list_head interfaces;
1199         struct mutex iflist_mtx;
1200
1201         /*
1202          * Key mutex, protects sdata's key_list and sta_info's
1203          * key pointers (write access, they're RCU.)
1204          */
1205         struct mutex key_mtx;
1206
1207         /* mutex for scan and work locking */
1208         struct mutex mtx;
1209
1210         /* Scanning and BSS list */
1211         unsigned long scanning;
1212         struct cfg80211_ssid scan_ssid;
1213         struct cfg80211_scan_request *int_scan_req;
1214         struct cfg80211_scan_request *scan_req;
1215         struct ieee80211_scan_request *hw_scan_req;
1216         struct cfg80211_chan_def scan_chandef;
1217         enum ieee80211_band hw_scan_band;
1218         int scan_channel_idx;
1219         int scan_ies_len;
1220         int hw_scan_ies_bufsize;
1221
1222         struct work_struct sched_scan_stopped_work;
1223         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1224         struct cfg80211_sched_scan_request *sched_scan_req;
1225
1226         unsigned long leave_oper_channel_time;
1227         enum mac80211_scan_state next_scan_state;
1228         struct delayed_work scan_work;
1229         struct ieee80211_sub_if_data __rcu *scan_sdata;
1230         /* For backward compatibility only -- do not use */
1231         struct cfg80211_chan_def _oper_chandef;
1232
1233         /* Temporary remain-on-channel for off-channel operations */
1234         struct ieee80211_channel *tmp_channel;
1235
1236         /* channel contexts */
1237         struct list_head chanctx_list;
1238         struct mutex chanctx_mtx;
1239
1240         /* SNMP counters */
1241         /* dot11CountersTable */
1242         u32 dot11TransmittedFragmentCount;
1243         u32 dot11MulticastTransmittedFrameCount;
1244         u32 dot11FailedCount;
1245         u32 dot11RetryCount;
1246         u32 dot11MultipleRetryCount;
1247         u32 dot11FrameDuplicateCount;
1248         u32 dot11ReceivedFragmentCount;
1249         u32 dot11MulticastReceivedFrameCount;
1250         u32 dot11TransmittedFrameCount;
1251
1252 #ifdef CONFIG_MAC80211_LEDS
1253         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1254         struct tpt_led_trigger *tpt_led_trigger;
1255         char tx_led_name[32], rx_led_name[32],
1256              assoc_led_name[32], radio_led_name[32];
1257 #endif
1258
1259 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1260         /* TX/RX handler statistics */
1261         unsigned int tx_handlers_drop;
1262         unsigned int tx_handlers_queued;
1263         unsigned int tx_handlers_drop_unencrypted;
1264         unsigned int tx_handlers_drop_fragment;
1265         unsigned int tx_handlers_drop_wep;
1266         unsigned int tx_handlers_drop_not_assoc;
1267         unsigned int tx_handlers_drop_unauth_port;
1268         unsigned int rx_handlers_drop;
1269         unsigned int rx_handlers_queued;
1270         unsigned int rx_handlers_drop_nullfunc;
1271         unsigned int rx_handlers_drop_defrag;
1272         unsigned int rx_handlers_drop_short;
1273         unsigned int tx_expand_skb_head;
1274         unsigned int tx_expand_skb_head_cloned;
1275         unsigned int rx_expand_skb_head;
1276         unsigned int rx_expand_skb_head2;
1277         unsigned int rx_handlers_fragments;
1278         unsigned int tx_status_drop;
1279 #define I802_DEBUG_INC(c) (c)++
1280 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1281 #define I802_DEBUG_INC(c) do { } while (0)
1282 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1283
1284
1285         int total_ps_buffered; /* total number of all buffered unicast and
1286                                 * multicast packets for power saving stations
1287                                 */
1288
1289         bool pspolling;
1290         bool offchannel_ps_enabled;
1291         /*
1292          * PS can only be enabled when we have exactly one managed
1293          * interface (and monitors) in PS, this then points there.
1294          */
1295         struct ieee80211_sub_if_data *ps_sdata;
1296         struct work_struct dynamic_ps_enable_work;
1297         struct work_struct dynamic_ps_disable_work;
1298         struct timer_list dynamic_ps_timer;
1299         struct notifier_block network_latency_notifier;
1300         struct notifier_block ifa_notifier;
1301         struct notifier_block ifa6_notifier;
1302
1303         /*
1304          * The dynamic ps timeout configured from user space via WEXT -
1305          * this will override whatever chosen by mac80211 internally.
1306          */
1307         int dynamic_ps_forced_timeout;
1308
1309         int user_power_level; /* in dBm, for all interfaces */
1310
1311         enum ieee80211_smps_mode smps_mode;
1312
1313         struct work_struct restart_work;
1314
1315 #ifdef CONFIG_MAC80211_DEBUGFS
1316         struct local_debugfsdentries {
1317                 struct dentry *rcdir;
1318                 struct dentry *keys;
1319         } debugfs;
1320 #endif
1321
1322         /*
1323          * Remain-on-channel support
1324          */
1325         struct list_head roc_list;
1326         struct work_struct hw_roc_start, hw_roc_done;
1327         unsigned long hw_roc_start_time;
1328         u64 roc_cookie_counter;
1329
1330         struct idr ack_status_frames;
1331         spinlock_t ack_status_lock;
1332
1333         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1334
1335         struct napi_struct *napi;
1336
1337         /* virtual monitor interface */
1338         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1339         struct cfg80211_chan_def monitor_chandef;
1340
1341         /* extended capabilities provided by mac80211 */
1342         u8 ext_capa[8];
1343 };
1344
1345 static inline struct ieee80211_sub_if_data *
1346 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1347 {
1348         return netdev_priv(dev);
1349 }
1350
1351 static inline struct ieee80211_sub_if_data *
1352 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1353 {
1354         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1355 }
1356
1357 /* this struct represents 802.11n's RA/TID combination */
1358 struct ieee80211_ra_tid {
1359         u8 ra[ETH_ALEN];
1360         u16 tid;
1361 };
1362
1363 /* this struct holds the value parsing from channel switch IE  */
1364 struct ieee80211_csa_ie {
1365         struct cfg80211_chan_def chandef;
1366         u8 mode;
1367         u8 count;
1368         u8 ttl;
1369         u16 pre_value;
1370 };
1371
1372 /* Parsed Information Elements */
1373 struct ieee802_11_elems {
1374         const u8 *ie_start;
1375         size_t total_len;
1376
1377         /* pointers to IEs */
1378         const u8 *ssid;
1379         const u8 *supp_rates;
1380         const u8 *ds_params;
1381         const struct ieee80211_tim_ie *tim;
1382         const u8 *challenge;
1383         const u8 *rsn;
1384         const u8 *erp_info;
1385         const u8 *ext_supp_rates;
1386         const u8 *wmm_info;
1387         const u8 *wmm_param;
1388         const struct ieee80211_ht_cap *ht_cap_elem;
1389         const struct ieee80211_ht_operation *ht_operation;
1390         const struct ieee80211_vht_cap *vht_cap_elem;
1391         const struct ieee80211_vht_operation *vht_operation;
1392         const struct ieee80211_meshconf_ie *mesh_config;
1393         const u8 *mesh_id;
1394         const u8 *peering;
1395         const __le16 *awake_window;
1396         const u8 *preq;
1397         const u8 *prep;
1398         const u8 *perr;
1399         const struct ieee80211_rann_ie *rann;
1400         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1401         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1402         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1403         const u8 *country_elem;
1404         const u8 *pwr_constr_elem;
1405         const u8 *cisco_dtpc_elem;
1406         const struct ieee80211_timeout_interval_ie *timeout_int;
1407         const u8 *opmode_notif;
1408         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1409         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1410
1411         /* length of them, respectively */
1412         u8 ssid_len;
1413         u8 supp_rates_len;
1414         u8 tim_len;
1415         u8 challenge_len;
1416         u8 rsn_len;
1417         u8 ext_supp_rates_len;
1418         u8 wmm_info_len;
1419         u8 wmm_param_len;
1420         u8 mesh_id_len;
1421         u8 peering_len;
1422         u8 preq_len;
1423         u8 prep_len;
1424         u8 perr_len;
1425         u8 country_elem_len;
1426
1427         /* whether a parse error occurred while retrieving these elements */
1428         bool parse_error;
1429 };
1430
1431 static inline struct ieee80211_local *hw_to_local(
1432         struct ieee80211_hw *hw)
1433 {
1434         return container_of(hw, struct ieee80211_local, hw);
1435 }
1436
1437
1438 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1439 {
1440         return ether_addr_equal(raddr, addr) ||
1441                is_broadcast_ether_addr(raddr);
1442 }
1443
1444 static inline bool
1445 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1446 {
1447         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1448                      status->flag & RX_FLAG_MACTIME_END);
1449         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1450 }
1451
1452 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1453                                      struct ieee80211_rx_status *status,
1454                                      unsigned int mpdu_len,
1455                                      unsigned int mpdu_offset);
1456 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1457 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1458 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1459                                       u32 changed);
1460 void ieee80211_configure_filter(struct ieee80211_local *local);
1461 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1462
1463 /* STA code */
1464 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1465 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1466                        struct cfg80211_auth_request *req);
1467 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1468                         struct cfg80211_assoc_request *req);
1469 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1470                          struct cfg80211_deauth_request *req);
1471 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1472                            struct cfg80211_disassoc_request *req);
1473 void ieee80211_send_pspoll(struct ieee80211_local *local,
1474                            struct ieee80211_sub_if_data *sdata);
1475 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1476 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1477 int ieee80211_max_network_latency(struct notifier_block *nb,
1478                                   unsigned long data, void *dummy);
1479 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1480 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1481 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1482                                   struct sk_buff *skb);
1483 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1484 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1485 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1486 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1487                                   __le16 fc, bool acked);
1488 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1489 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1490 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1491
1492 /* IBSS code */
1493 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1494 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1495 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1496                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1497 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1498                         struct cfg80211_ibss_params *params);
1499 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1500 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1501 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1502                                    struct sk_buff *skb);
1503 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1504                               struct cfg80211_csa_settings *csa_settings);
1505 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1506 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1507
1508 /* mesh code */
1509 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1511                                    struct sk_buff *skb);
1512 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1513                               struct cfg80211_csa_settings *csa_settings);
1514 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1515
1516 /* scan/BSS handling */
1517 void ieee80211_scan_work(struct work_struct *work);
1518 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1519                                 const u8 *ssid, u8 ssid_len,
1520                                 struct ieee80211_channel *chan,
1521                                 enum nl80211_bss_scan_width scan_width);
1522 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1523                            struct cfg80211_scan_request *req);
1524 void ieee80211_scan_cancel(struct ieee80211_local *local);
1525 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1526 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1527
1528 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1529 struct ieee80211_bss *
1530 ieee80211_bss_info_update(struct ieee80211_local *local,
1531                           struct ieee80211_rx_status *rx_status,
1532                           struct ieee80211_mgmt *mgmt,
1533                           size_t len,
1534                           struct ieee802_11_elems *elems,
1535                           struct ieee80211_channel *channel);
1536 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1537                           struct ieee80211_bss *bss);
1538
1539 /* scheduled scan handling */
1540 int
1541 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1542                                      struct cfg80211_sched_scan_request *req);
1543 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1544                                        struct cfg80211_sched_scan_request *req);
1545 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1546 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1547 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1548
1549 /* off-channel helpers */
1550 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1551 void ieee80211_offchannel_return(struct ieee80211_local *local);
1552 void ieee80211_roc_setup(struct ieee80211_local *local);
1553 void ieee80211_start_next_roc(struct ieee80211_local *local);
1554 void ieee80211_roc_purge(struct ieee80211_local *local,
1555                          struct ieee80211_sub_if_data *sdata);
1556 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1557 void ieee80211_sw_roc_work(struct work_struct *work);
1558 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1559
1560 /* channel switch handling */
1561 void ieee80211_csa_finalize_work(struct work_struct *work);
1562 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1563                              struct cfg80211_csa_settings *params);
1564
1565 /* interface handling */
1566 int ieee80211_iface_init(void);
1567 void ieee80211_iface_exit(void);
1568 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1569                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1570                      struct vif_params *params);
1571 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1572                              enum nl80211_iftype type);
1573 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1574 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1575 u32 ieee80211_idle_off(struct ieee80211_local *local);
1576 void ieee80211_recalc_idle(struct ieee80211_local *local);
1577 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1578                                     const int offset);
1579 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1580 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1581 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1582 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1583
1584 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1585 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1586
1587 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1588 {
1589         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1590 }
1591
1592 /* tx handling */
1593 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1594 void ieee80211_tx_pending(unsigned long data);
1595 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1596                                          struct net_device *dev);
1597 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1598                                        struct net_device *dev);
1599 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1600                               struct sk_buff_head *skbs);
1601
1602 /* HT */
1603 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1604                                      struct ieee80211_sta_ht_cap *ht_cap);
1605 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1606                                        struct ieee80211_supported_band *sband,
1607                                        const struct ieee80211_ht_cap *ht_cap_ie,
1608                                        struct sta_info *sta);
1609 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1610                           const u8 *da, u16 tid,
1611                           u16 initiator, u16 reason_code);
1612 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1613                                enum ieee80211_smps_mode smps, const u8 *da,
1614                                const u8 *bssid);
1615 void ieee80211_request_smps_ap_work(struct work_struct *work);
1616 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1617 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1618                                    enum ieee80211_smps_mode smps_mode_new);
1619
1620 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1621                                      u16 initiator, u16 reason, bool stop);
1622 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1623                                     u16 initiator, u16 reason, bool stop);
1624 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1625                                      u8 dialog_token, u16 timeout,
1626                                      u16 start_seq_num, u16 ba_policy, u16 tid,
1627                                      u16 buf_size, bool tx, bool auto_seq);
1628 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1629                                          enum ieee80211_agg_stop_reason reason);
1630 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1631                              struct sta_info *sta,
1632                              struct ieee80211_mgmt *mgmt, size_t len);
1633 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1634                                   struct sta_info *sta,
1635                                   struct ieee80211_mgmt *mgmt,
1636                                   size_t len);
1637 void ieee80211_process_addba_request(struct ieee80211_local *local,
1638                                      struct sta_info *sta,
1639                                      struct ieee80211_mgmt *mgmt,
1640                                      size_t len);
1641
1642 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1643                                    enum ieee80211_agg_stop_reason reason);
1644 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1645                                     enum ieee80211_agg_stop_reason reason);
1646 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1647 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1648 void ieee80211_ba_session_work(struct work_struct *work);
1649 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1650 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1651
1652 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1653
1654 /* VHT */
1655 void
1656 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1657                                     struct ieee80211_supported_band *sband,
1658                                     const struct ieee80211_vht_cap *vht_cap_ie,
1659                                     struct sta_info *sta);
1660 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1661 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1662 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1663                                   struct sta_info *sta, u8 opmode,
1664                                   enum ieee80211_band band, bool nss_only);
1665 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1666                                  struct sta_info *sta, u8 opmode,
1667                                  enum ieee80211_band band, bool nss_only);
1668 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1669                                       struct ieee80211_sta_vht_cap *vht_cap);
1670
1671 /* Spectrum management */
1672 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1673                                        struct ieee80211_mgmt *mgmt,
1674                                        size_t len);
1675 /**
1676  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1677  * @sdata: the sdata of the interface which has received the frame
1678  * @elems: parsed 802.11 elements received with the frame
1679  * @beacon: indicates if the frame was a beacon or probe response
1680  * @current_band: indicates the current band
1681  * @sta_flags: contains information about own capabilities and restrictions
1682  *      to decide which channel switch announcements can be accepted. Only the
1683  *      following subset of &enum ieee80211_sta_flags are evaluated:
1684  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1685  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1686  *      %IEEE80211_STA_DISABLE_160MHZ.
1687  * @bssid: the currently connected bssid (for reporting)
1688  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1689         All of them will be filled with if success only.
1690  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1691  */
1692 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1693                                  struct ieee802_11_elems *elems, bool beacon,
1694                                  enum ieee80211_band current_band,
1695                                  u32 sta_flags, u8 *bssid,
1696                                  struct ieee80211_csa_ie *csa_ie);
1697
1698 /* Suspend/resume and hw reconfiguration */
1699 int ieee80211_reconfig(struct ieee80211_local *local);
1700 void ieee80211_stop_device(struct ieee80211_local *local);
1701
1702 int __ieee80211_suspend(struct ieee80211_hw *hw,
1703                         struct cfg80211_wowlan *wowlan);
1704
1705 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1706 {
1707         struct ieee80211_local *local = hw_to_local(hw);
1708
1709         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1710                 "%s: resume with hardware scan still in progress\n",
1711                 wiphy_name(hw->wiphy));
1712
1713         return ieee80211_reconfig(hw_to_local(hw));
1714 }
1715
1716 /* utility functions/constants */
1717 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1718 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1719                         enum nl80211_iftype type);
1720 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1721                              int rate, int erp, int short_preamble,
1722                              int shift);
1723 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1724                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1725                                      gfp_t gfp);
1726 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1727                                bool bss_notify);
1728 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1729                     enum ieee80211_band band);
1730
1731 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1732                                  struct sk_buff *skb, int tid,
1733                                  enum ieee80211_band band);
1734
1735 static inline void
1736 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1737                           struct sk_buff *skb, int tid,
1738                           enum ieee80211_band band)
1739 {
1740         rcu_read_lock();
1741         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1742         rcu_read_unlock();
1743 }
1744
1745 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1746                                         struct sk_buff *skb, int tid)
1747 {
1748         struct ieee80211_chanctx_conf *chanctx_conf;
1749
1750         rcu_read_lock();
1751         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1752         if (WARN_ON(!chanctx_conf)) {
1753                 rcu_read_unlock();
1754                 kfree_skb(skb);
1755                 return;
1756         }
1757
1758         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1759                                     chanctx_conf->def.chan->band);
1760         rcu_read_unlock();
1761 }
1762
1763 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1764                                     struct sk_buff *skb)
1765 {
1766         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1767         ieee80211_tx_skb_tid(sdata, skb, 7);
1768 }
1769
1770 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1771                                struct ieee802_11_elems *elems,
1772                                u64 filter, u32 crc);
1773 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1774                                           bool action,
1775                                           struct ieee802_11_elems *elems)
1776 {
1777         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1778 }
1779
1780 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1781 {
1782         struct sk_buff *tail = skb_peek_tail(frames);
1783         struct ieee80211_rx_status *status;
1784
1785         if (!tail)
1786                 return false;
1787
1788         status = IEEE80211_SKB_RXCB(tail);
1789         if (status->flag & RX_FLAG_AMSDU_MORE)
1790                 return false;
1791
1792         return true;
1793 }
1794
1795 extern const int ieee802_1d_to_ac[8];
1796
1797 static inline int ieee80211_ac_from_tid(int tid)
1798 {
1799         return ieee802_1d_to_ac[tid & 7];
1800 }
1801
1802 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1803 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1804 void ieee80211_dynamic_ps_timer(unsigned long data);
1805 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1806                              struct ieee80211_sub_if_data *sdata,
1807                              int powersave);
1808 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1809                              struct ieee80211_hdr *hdr);
1810 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1811                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1812
1813 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1814                                      unsigned long queues,
1815                                      enum queue_stop_reason reason,
1816                                      bool refcounted);
1817 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1818                                struct ieee80211_sub_if_data *sdata,
1819                                enum queue_stop_reason reason);
1820 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1821                                struct ieee80211_sub_if_data *sdata,
1822                                enum queue_stop_reason reason);
1823 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1824                                      unsigned long queues,
1825                                      enum queue_stop_reason reason,
1826                                      bool refcounted);
1827 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1828                                     enum queue_stop_reason reason,
1829                                     bool refcounted);
1830 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1831                                     enum queue_stop_reason reason,
1832                                     bool refcounted);
1833 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1834 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1835                                struct sk_buff *skb);
1836 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1837                                 struct sk_buff_head *skbs);
1838 void ieee80211_flush_queues(struct ieee80211_local *local,
1839                             struct ieee80211_sub_if_data *sdata);
1840
1841 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1842                          u16 transaction, u16 auth_alg, u16 status,
1843                          const u8 *extra, size_t extra_len, const u8 *bssid,
1844                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1845                          u32 tx_flags);
1846 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1847                                     const u8 *bssid, u16 stype, u16 reason,
1848                                     bool send_frame, u8 *frame_buf);
1849 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1850                              size_t buffer_len,
1851                              struct ieee80211_scan_ies *ie_desc,
1852                              const u8 *ie, size_t ie_len,
1853                              u8 bands_used, u32 *rate_masks,
1854                              struct cfg80211_chan_def *chandef);
1855 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1856                                           u8 *dst, u32 ratemask,
1857                                           struct ieee80211_channel *chan,
1858                                           const u8 *ssid, size_t ssid_len,
1859                                           const u8 *ie, size_t ie_len,
1860                                           bool directed);
1861 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1862                               const u8 *ssid, size_t ssid_len,
1863                               const u8 *ie, size_t ie_len,
1864                               u32 ratemask, bool directed, u32 tx_flags,
1865                               struct ieee80211_channel *channel, bool scan);
1866
1867 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1868                             struct ieee802_11_elems *elems,
1869                             enum ieee80211_band band, u32 *basic_rates);
1870 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1871                                  enum ieee80211_smps_mode smps_mode);
1872 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1873                                 enum ieee80211_smps_mode smps_mode);
1874 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1875 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1876
1877 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1878 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1879                               u16 cap);
1880 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1881                                const struct cfg80211_chan_def *chandef,
1882                                u16 prot_mode);
1883 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1884                                u32 cap);
1885 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1886                              const struct ieee80211_supported_band *sband,
1887                              const u8 *srates, int srates_len, u32 *rates);
1888 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1889                             struct sk_buff *skb, bool need_basic,
1890                             enum ieee80211_band band);
1891 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1892                                 struct sk_buff *skb, bool need_basic,
1893                                 enum ieee80211_band band);
1894 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1895
1896 /* channel management */
1897 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1898                                   const struct ieee80211_ht_operation *ht_oper,
1899                                   struct cfg80211_chan_def *chandef);
1900 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1901
1902 int __must_check
1903 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1904                           const struct cfg80211_chan_def *chandef,
1905                           enum ieee80211_chanctx_mode mode);
1906 int __must_check
1907 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1908                               const struct cfg80211_chan_def *chandef,
1909                               enum ieee80211_chanctx_mode mode,
1910                               bool radar_required);
1911 int __must_check
1912 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1913 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1914
1915 int __must_check
1916 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1917                                const struct cfg80211_chan_def *chandef,
1918                                u32 *changed);
1919 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1920 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1921 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1922                                          bool clear);
1923 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1924                                struct ieee80211_chanctx *ctx);
1925
1926 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1927                                    struct ieee80211_chanctx *chanctx);
1928 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1929                                       struct ieee80211_chanctx *ctx);
1930
1931 void ieee80211_dfs_cac_timer(unsigned long data);
1932 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1933 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1934 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1935 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1936                               struct cfg80211_csa_settings *csa_settings);
1937
1938 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1939 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1940 const struct ieee80211_cipher_scheme *
1941 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1942                  enum nl80211_iftype iftype);
1943 int ieee80211_cs_headroom(struct ieee80211_local *local,
1944                           struct cfg80211_crypto_settings *crypto,
1945                           enum nl80211_iftype iftype);
1946 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1947                            struct ieee80211_sub_if_data *sdata);
1948 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1949                                  const struct cfg80211_chan_def *chandef,
1950                                  enum ieee80211_chanctx_mode chanmode,
1951                                  u8 radar_detect);
1952 int ieee80211_max_num_channels(struct ieee80211_local *local);
1953
1954 /* TDLS */
1955 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1956                         const u8 *peer, u8 action_code, u8 dialog_token,
1957                         u16 status_code, u32 peer_capability,
1958                         bool initiator, const u8 *extra_ies,
1959                         size_t extra_ies_len);
1960 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1961                         const u8 *peer, enum nl80211_tdls_operation oper);
1962 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
1963
1964 extern const struct ethtool_ops ieee80211_ethtool_ops;
1965
1966 #ifdef CONFIG_MAC80211_NOINLINE
1967 #define debug_noinline noinline
1968 #else
1969 #define debug_noinline
1970 #endif
1971
1972 #endif /* IEEE80211_I_H */