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 <linux/rhashtable.h>
  30 #include <net/ieee80211_radiotap.h>
  31 #include <net/cfg80211.h>
  32 #include <net/mac80211.h>
  33 #include "key.h"
  34 #include "sta_info.h"
  35 #include "debug.h"
  36
  37 extern const struct cfg80211_ops mac80211_config_ops;
  38
  39 struct ieee80211_local;
  40
  41 /* Maximum number of broadcast/multicast frames to buffer when some of the
  42  * associated stations are using power saving. */
  43 #define AP_MAX_BC_BUFFER 128
  44
  45 /* Maximum number of frames buffered to all STAs, including multicast frames.
  46  * Note: increasing this limit increases the potential memory requirement. Each
  47  * frame can be up to about 2 kB long. */
  48 #define TOTAL_MAX_TX_BUFFER 512
  49
  50 /* Required encryption head and tailroom */
  51 #define IEEE80211_ENCRYPT_HEADROOM 8
  52 #define IEEE80211_ENCRYPT_TAILROOM 18
  53
  54 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  55  * reception of at least three fragmented frames. This limit can be increased
  56  * by changing this define, at the cost of slower frame reassembly and
  57  * increased memory use (about 2 kB of RAM per entry). */
  58 #define IEEE80211_FRAGMENT_MAX 4
  59
  60 /* power level hasn't been configured (or set to automatic) */
  61 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  62
  63 /*
  64  * Some APs experience problems when working with U-APSD. Decreasing the
  65  * probability of that happening by using legacy mode for all ACs but VO isn't
  66  * enough.
  67  *
  68  * Cisco 4410N originally forced us to enable VO by default only because it
  69  * treated non-VO ACs as legacy.
  70  *
  71  * However some APs (notably Netgear R7000) silently reclassify packets to
  72  * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
  73  * clients would never see some frames (e.g. ARP responses) or would fetch them
  74  * accidentally after a long time.
  75  *
  76  * It makes little sense to enable u-APSD queues by default because it needs
  77  * userspace applications to be aware of it to actually take advantage of the
  78  * possible additional powersavings. Implicitly depending on driver autotrigger
  79  * frame support doesn't make much sense.
  80  */
  81 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
  82
  83 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  84         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  85
  86 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  87
  88 struct ieee80211_fragment_entry {
  89         struct sk_buff_head skb_list;
  90         unsigned long first_frag_time;
  91         u16 seq;
  92         u16 extra_len;
  93         u16 last_frag;
  94         u8 rx_queue;
  95         bool check_sequential_pn; /* needed for CCMP/GCMP */
  96         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  97 };
  98
  99
 100 struct ieee80211_bss {
 101         u32 device_ts_beacon, device_ts_presp;
 102
 103         bool wmm_used;
 104         bool uapsd_supported;
 105
 106 #define IEEE80211_MAX_SUPP_RATES 32
 107         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 108         size_t supp_rates_len;
 109         struct ieee80211_rate *beacon_rate;
 110
 111         /*
 112          * During association, we save an ERP value from a probe response so
 113          * that we can feed ERP info to the driver when handling the
 114          * association completes. these fields probably won't be up-to-date
 115          * otherwise, you probably don't want to use them.
 116          */
 117         bool has_erp_value;
 118         u8 erp_value;
 119
 120         /* Keep track of the corruption of the last beacon/probe response. */
 121         u8 corrupt_data;
 122
 123         /* Keep track of what bits of information we have valid info for. */
 124         u8 valid_data;
 125 };
 126
 127 /**
 128  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 129  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 130  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 131  *
 132  * These are bss flags that are attached to a bss in the
 133  * @corrupt_data field of &struct ieee80211_bss.
 134  */
 135 enum ieee80211_bss_corrupt_data_flags {
 136         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 137         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 138 };
 139
 140 /**
 141  * enum ieee80211_valid_data_flags - BSS valid data flags
 142  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 143  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 144  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 145  *
 146  * These are bss flags that are attached to a bss in the
 147  * @valid_data field of &struct ieee80211_bss.  They show which parts
 148  * of the data structure were received as a result of an un-corrupted
 149  * beacon/probe response.
 150  */
 151 enum ieee80211_bss_valid_data_flags {
 152         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 153         IEEE80211_BSS_VALID_RATES               = BIT(2),
 154         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 155 };
 156
 157 typedef unsigned __bitwise__ ieee80211_tx_result;
 158 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 159 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 160 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 161
 162 #define IEEE80211_TX_UNICAST            BIT(1)
 163 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 164
 165 struct ieee80211_tx_data {
 166         struct sk_buff *skb;
 167         struct sk_buff_head skbs;
 168         struct ieee80211_local *local;
 169         struct ieee80211_sub_if_data *sdata;
 170         struct sta_info *sta;
 171         struct ieee80211_key *key;
 172         struct ieee80211_tx_rate rate;
 173
 174         unsigned int flags;
 175 };
 176
 177
 178 typedef unsigned __bitwise__ ieee80211_rx_result;
 179 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 180 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 181 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 182 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 183
 184 /**
 185  * enum ieee80211_packet_rx_flags - packet RX flags
 186  * @IEEE80211_RX_AMSDU: a-MSDU packet
 187  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 188  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 189  *
 190  * These are per-frame flags that are attached to a frame in the
 191  * @rx_flags field of &struct ieee80211_rx_status.
 192  */
 193 enum ieee80211_packet_rx_flags {
 194         IEEE80211_RX_AMSDU                      = BIT(3),
 195         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 196         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 197 };
 198
 199 /**
 200  * enum ieee80211_rx_flags - RX data flags
 201  *
 202  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 203  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 204  *      to cfg80211_report_obss_beacon().
 205  *
 206  * These flags are used across handling multiple interfaces
 207  * for a single frame.
 208  */
 209 enum ieee80211_rx_flags {
 210         IEEE80211_RX_CMNTR              = BIT(0),
 211         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 212 };
 213
 214 struct ieee80211_rx_data {
 215         struct napi_struct *napi;
 216         struct sk_buff *skb;
 217         struct ieee80211_local *local;
 218         struct ieee80211_sub_if_data *sdata;
 219         struct sta_info *sta;
 220         struct ieee80211_key *key;
 221
 222         unsigned int flags;
 223
 224         /*
 225          * Index into sequence numbers array, 0..16
 226          * since the last (16) is used for non-QoS,
 227          * will be 16 on non-QoS frames.
 228          */
 229         int seqno_idx;
 230
 231         /*
 232          * Index into the security IV/PN arrays, 0..16
 233          * since the last (16) is used for CCMP-encrypted
 234          * management frames, will be set to 16 on mgmt
 235          * frames and 0 on non-QoS frames.
 236          */
 237         int security_idx;
 238
 239         u32 tkip_iv32;
 240         u16 tkip_iv16;
 241 };
 242
 243 struct ieee80211_csa_settings {
 244         const u16 *counter_offsets_beacon;
 245         const u16 *counter_offsets_presp;
 246
 247         int n_counter_offsets_beacon;
 248         int n_counter_offsets_presp;
 249
 250         u8 count;
 251 };
 252
 253 struct beacon_data {
 254         u8 *head, *tail;
 255         int head_len, tail_len;
 256         struct ieee80211_meshconf_ie *meshconf;
 257         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 258         u8 csa_current_counter;
 259         struct rcu_head rcu_head;
 260 };
 261
 262 struct probe_resp {
 263         struct rcu_head rcu_head;
 264         int len;
 265         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
 266         u8 data[0];
 267 };
 268
 269 struct ps_data {
 270         /* yes, this looks ugly, but guarantees that we can later use
 271          * bitmap_empty :)
 272          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 273         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
 274                         __aligned(__alignof__(unsigned long));
 275         struct sk_buff_head bc_buf;
 276         atomic_t num_sta_ps; /* number of stations in PS mode */
 277         int dtim_count;
 278         bool dtim_bc_mc;
 279 };
 280
 281 struct ieee80211_if_ap {
 282         struct beacon_data __rcu *beacon;
 283         struct probe_resp __rcu *probe_resp;
 284
 285         /* to be used after channel switch. */
 286         struct cfg80211_beacon_data *next_beacon;
 287         struct list_head vlans; /* write-protected with RTNL and local->mtx */
 288
 289         struct ps_data ps;
 290         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 291         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 292                          driver_smps_mode; /* smps mode request */
 293
 294         struct work_struct request_smps_work;
 295 };
 296
 297 struct ieee80211_if_wds {
 298         struct sta_info *sta;
 299         u8 remote_addr[ETH_ALEN];
 300 };
 301
 302 struct ieee80211_if_vlan {
 303         struct list_head list; /* write-protected with RTNL and local->mtx */
 304
 305         /* used for all tx if the VLAN is configured to 4-addr mode */
 306         struct sta_info __rcu *sta;
 307 };
 308
 309 struct mesh_stats {
 310         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 311         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 312         __u32 fwded_frames;             /* Mesh total forwarded frames */
 313         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 314         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 315         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 316 };
 317
 318 #define PREQ_Q_F_START          0x1
 319 #define PREQ_Q_F_REFRESH        0x2
 320 struct mesh_preq_queue {
 321         struct list_head list;
 322         u8 dst[ETH_ALEN];
 323         u8 flags;
 324 };
 325
 326 struct ieee80211_roc_work {
 327         struct list_head list;
 328
 329         struct ieee80211_sub_if_data *sdata;
 330
 331         struct ieee80211_channel *chan;
 332
 333         bool started, abort, hw_begun, notified;
 334         bool on_channel;
 335
 336         unsigned long 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 DECLARE_EWMA(beacon_signal, 16, 4)
 421
 422 struct ieee80211_if_managed {
 423         struct timer_list timer;
 424         struct timer_list conn_mon_timer;
 425         struct timer_list bcn_mon_timer;
 426         struct timer_list chswitch_timer;
 427         struct work_struct monitor_work;
 428         struct work_struct chswitch_work;
 429         struct work_struct beacon_connection_loss_work;
 430         struct work_struct csa_connection_drop_work;
 431
 432         unsigned long beacon_timeout;
 433         unsigned long probe_timeout;
 434         int probe_send_count;
 435         bool nullfunc_failed;
 436         bool connection_loss;
 437
 438         struct cfg80211_bss *associated;
 439         struct ieee80211_mgd_auth_data *auth_data;
 440         struct ieee80211_mgd_assoc_data *assoc_data;
 441
 442         u8 bssid[ETH_ALEN];
 443
 444         u16 aid;
 445
 446         bool powersave; /* powersave requested for this iface */
 447         bool broken_ap; /* AP is broken -- turn off powersave */
 448         bool have_beacon;
 449         u8 dtim_period;
 450         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 451                                  driver_smps_mode; /* smps mode request */
 452
 453         struct work_struct request_smps_work;
 454
 455         unsigned int flags;
 456
 457         bool csa_waiting_bcn;
 458         bool csa_ignored_same_chan;
 459
 460         bool beacon_crc_valid;
 461         u32 beacon_crc;
 462
 463         bool status_acked;
 464         bool status_received;
 465         __le16 status_fc;
 466
 467         enum {
 468                 IEEE80211_MFP_DISABLED,
 469                 IEEE80211_MFP_OPTIONAL,
 470                 IEEE80211_MFP_REQUIRED
 471         } mfp; /* management frame protection */
 472
 473         /*
 474          * Bitmask of enabled u-apsd queues,
 475          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 476          * to take effect.
 477          */
 478         unsigned int uapsd_queues;
 479
 480         /*
 481          * Maximum number of buffered frames AP can deliver during a
 482          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 483          * Needs a new association to take effect.
 484          */
 485         unsigned int uapsd_max_sp_len;
 486
 487         int wmm_last_param_set;
 488
 489         u8 use_4addr;
 490
 491         s16 p2p_noa_index;
 492
 493         struct ewma_beacon_signal ave_beacon_signal;
 494
 495         /*
 496          * Number of Beacon frames used in ave_beacon_signal. This can be used
 497          * to avoid generating less reliable cqm events that would be based
 498          * only on couple of received frames.
 499          */
 500         unsigned int count_beacon_signal;
 501
 502         /* Number of times beacon loss was invoked. */
 503         unsigned int beacon_loss_count;
 504
 505         /*
 506          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 507          * that triggered a cqm event. 0 indicates that no event has been
 508          * generated for the current association.
 509          */
 510         int last_cqm_event_signal;
 511
 512         /*
 513          * State variables for keeping track of RSSI of the AP currently
 514          * connected to and informing driver when RSSI has gone
 515          * below/above a certain threshold.
 516          */
 517         int rssi_min_thold, rssi_max_thold;
 518         int last_ave_beacon_signal;
 519
 520         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 521         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 522         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 523         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 524
 525         /* TDLS support */
 526         u8 tdls_peer[ETH_ALEN] __aligned(2);
 527         struct delayed_work tdls_peer_del_work;
 528         struct sk_buff *orig_teardown_skb; /* The original teardown skb */
 529         struct sk_buff *teardown_skb; /* A copy to send through the AP */
 530         spinlock_t teardown_lock; /* To lock changing teardown_skb */
 531         bool tdls_chan_switch_prohibited;
 532         bool tdls_wider_bw_prohibited;
 533
 534         /* WMM-AC TSPEC support */
 535         struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
 536         /* Use a separate work struct so that we can do something here
 537          * while the sdata->work is flushing the queues, for example.
 538          * otherwise, in scenarios where we hardly get any traffic out
 539          * on the BE queue, but there's a lot of VO traffic, we might
 540          * get stuck in a downgraded situation and flush takes forever.
 541          */
 542         struct delayed_work tx_tspec_wk;
 543 };
 544
 545 struct ieee80211_if_ibss {
 546         struct timer_list timer;
 547         struct work_struct csa_connection_drop_work;
 548
 549         unsigned long last_scan_completed;
 550
 551         u32 basic_rates;
 552
 553         bool fixed_bssid;
 554         bool fixed_channel;
 555         bool privacy;
 556
 557         bool control_port;
 558         bool userspace_handles_dfs;
 559
 560         u8 bssid[ETH_ALEN] __aligned(2);
 561         u8 ssid[IEEE80211_MAX_SSID_LEN];
 562         u8 ssid_len, ie_len;
 563         u8 *ie;
 564         struct cfg80211_chan_def chandef;
 565
 566         unsigned long ibss_join_req;
 567         /* probe response/beacon for IBSS */
 568         struct beacon_data __rcu *presp;
 569
 570         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 571         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 572
 573         spinlock_t incomplete_lock;
 574         struct list_head incomplete_stations;
 575
 576         enum {
 577                 IEEE80211_IBSS_MLME_SEARCH,
 578                 IEEE80211_IBSS_MLME_JOINED,
 579         } state;
 580 };
 581
 582 /**
 583  * struct ieee80211_if_ocb - OCB mode state
 584  *
 585  * @housekeeping_timer: timer for periodic invocation of a housekeeping task
 586  * @wrkq_flags: OCB deferred task action
 587  * @incomplete_lock: delayed STA insertion lock
 588  * @incomplete_stations: list of STAs waiting for delayed insertion
 589  * @joined: indication if the interface is connected to an OCB network
 590  */
 591 struct ieee80211_if_ocb {
 592         struct timer_list housekeeping_timer;
 593         unsigned long wrkq_flags;
 594
 595         spinlock_t incomplete_lock;
 596         struct list_head incomplete_stations;
 597
 598         bool joined;
 599 };
 600
 601 /**
 602  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 603  *
 604  * these declarations define the interface, which enables
 605  * vendor-specific mesh synchronization
 606  *
 607  */
 608 struct ieee802_11_elems;
 609 struct ieee80211_mesh_sync_ops {
 610         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 611                              u16 stype,
 612                              struct ieee80211_mgmt *mgmt,
 613                              struct ieee802_11_elems *elems,
 614                              struct ieee80211_rx_status *rx_status);
 615
 616         /* should be called with beacon_data under RCU read lock */
 617         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
 618                             struct beacon_data *beacon);
 619         /* add other framework functions here */
 620 };
 621
 622 struct mesh_csa_settings {
 623         struct rcu_head rcu_head;
 624         struct cfg80211_csa_settings settings;
 625 };
 626
 627 struct ieee80211_if_mesh {
 628         struct timer_list housekeeping_timer;
 629         struct timer_list mesh_path_timer;
 630         struct timer_list mesh_path_root_timer;
 631
 632         unsigned long wrkq_flags;
 633         unsigned long mbss_changed;
 634
 635         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 636         size_t mesh_id_len;
 637         /* Active Path Selection Protocol Identifier */
 638         u8 mesh_pp_id;
 639         /* Active Path Selection Metric Identifier */
 640         u8 mesh_pm_id;
 641         /* Congestion Control Mode Identifier */
 642         u8 mesh_cc_id;
 643         /* Synchronization Protocol Identifier */
 644         u8 mesh_sp_id;
 645         /* Authentication Protocol Identifier */
 646         u8 mesh_auth_id;
 647         /* Local mesh Sequence Number */
 648         u32 sn;
 649         /* Last used PREQ ID */
 650         u32 preq_id;
 651         atomic_t mpaths;
 652         /* Timestamp of last SN update */
 653         unsigned long last_sn_update;
 654         /* Time when it's ok to send next PERR */
 655         unsigned long next_perr;
 656         /* Timestamp of last PREQ sent */
 657         unsigned long last_preq;
 658         struct mesh_rmc *rmc;
 659         spinlock_t mesh_preq_queue_lock;
 660         struct mesh_preq_queue preq_queue;
 661         int preq_queue_len;
 662         struct mesh_stats mshstats;
 663         struct mesh_config mshcfg;
 664         atomic_t estab_plinks;
 665         u32 mesh_seqnum;
 666         bool accepting_plinks;
 667         int num_gates;
 668         struct beacon_data __rcu *beacon;
 669         const u8 *ie;
 670         u8 ie_len;
 671         enum {
 672                 IEEE80211_MESH_SEC_NONE = 0x0,
 673                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 674                 IEEE80211_MESH_SEC_SECURED = 0x2,
 675         } security;
 676         bool user_mpm;
 677         /* Extensible Synchronization Framework */
 678         const struct ieee80211_mesh_sync_ops *sync_ops;
 679         s64 sync_offset_clockdrift_max;
 680         spinlock_t sync_offset_lock;
 681         bool adjusting_tbtt;
 682         /* mesh power save */
 683         enum nl80211_mesh_power_mode nonpeer_pm;
 684         int ps_peers_light_sleep;
 685         int ps_peers_deep_sleep;
 686         struct ps_data ps;
 687         /* Channel Switching Support */
 688         struct mesh_csa_settings __rcu *csa;
 689         enum {
 690                 IEEE80211_MESH_CSA_ROLE_NONE,
 691                 IEEE80211_MESH_CSA_ROLE_INIT,
 692                 IEEE80211_MESH_CSA_ROLE_REPEATER,
 693         } csa_role;
 694         u8 chsw_ttl;
 695         u16 pre_value;
 696
 697         /* offset from skb->data while building IE */
 698         int meshconf_offset;
 699 };
 700
 701 #ifdef CONFIG_MAC80211_MESH
 702 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 703         do { (msh)->mshstats.name++; } while (0)
 704 #else
 705 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 706         do { } while (0)
 707 #endif
 708
 709 /**
 710  * enum ieee80211_sub_if_data_flags - virtual interface flags
 711  *
 712  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 713  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 714  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 715  *      associated stations and deliver multicast frames both
 716  *      back to wireless media and to the local net stack.
 717  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 718  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 719  */
 720 enum ieee80211_sub_if_data_flags {
 721         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 722         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 723         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 724         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 725         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 726 };
 727
 728 /**
 729  * enum ieee80211_sdata_state_bits - virtual interface state bits
 730  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 731  *      mirrors netif_running() but is separate for interface type
 732  *      change handling while the interface is up
 733  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 734  *      mode, so queues are stopped
 735  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 736  *      to offchannel, reset when offchannel returns
 737  */
 738 enum ieee80211_sdata_state_bits {
 739         SDATA_STATE_RUNNING,
 740         SDATA_STATE_OFFCHANNEL,
 741         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 742 };
 743
 744 /**
 745  * enum ieee80211_chanctx_mode - channel context configuration mode
 746  *
 747  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 748  *      multiple interfaces
 749  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 750  *      only by a single interface. This can be used for example for
 751  *      non-fixed channel IBSS.
 752  */
 753 enum ieee80211_chanctx_mode {
 754         IEEE80211_CHANCTX_SHARED,
 755         IEEE80211_CHANCTX_EXCLUSIVE
 756 };
 757
 758 /**
 759  * enum ieee80211_chanctx_replace_state - channel context replacement state
 760  *
 761  * This is used for channel context in-place reservations that require channel
 762  * context switch/swap.
 763  *
 764  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 765  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 766  *      by a (not yet registered) channel context pointed by %replace_ctx.
 767  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 768  *      replaces an existing channel context pointed to by %replace_ctx.
 769  */
 770 enum ieee80211_chanctx_replace_state {
 771         IEEE80211_CHANCTX_REPLACE_NONE,
 772         IEEE80211_CHANCTX_WILL_BE_REPLACED,
 773         IEEE80211_CHANCTX_REPLACES_OTHER,
 774 };
 775
 776 struct ieee80211_chanctx {
 777         struct list_head list;
 778         struct rcu_head rcu_head;
 779
 780         struct list_head assigned_vifs;
 781         struct list_head reserved_vifs;
 782
 783         enum ieee80211_chanctx_replace_state replace_state;
 784         struct ieee80211_chanctx *replace_ctx;
 785
 786         enum ieee80211_chanctx_mode mode;
 787         bool driver_present;
 788
 789         struct ieee80211_chanctx_conf conf;
 790 };
 791
 792 struct mac80211_qos_map {
 793         struct cfg80211_qos_map qos_map;
 794         struct rcu_head rcu_head;
 795 };
 796
 797 enum txq_info_flags {
 798         IEEE80211_TXQ_STOP,
 799         IEEE80211_TXQ_AMPDU,
 800 };
 801
 802 struct txq_info {
 803         struct sk_buff_head queue;
 804         unsigned long flags;
 805         unsigned long byte_cnt;
 806
 807         /* keep last! */
 808         struct ieee80211_txq txq;
 809 };
 810
 811 struct ieee80211_sub_if_data {
 812         struct list_head list;
 813
 814         struct wireless_dev wdev;
 815
 816         /* keys */
 817         struct list_head key_list;
 818
 819         /* count for keys needing tailroom space allocation */
 820         int crypto_tx_tailroom_needed_cnt;
 821         int crypto_tx_tailroom_pending_dec;
 822         struct delayed_work dec_tailroom_needed_wk;
 823
 824         struct net_device *dev;
 825         struct ieee80211_local *local;
 826
 827         unsigned int flags;
 828
 829         unsigned long state;
 830
 831         char name[IFNAMSIZ];
 832
 833         /* Fragment table for host-based reassembly */
 834         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 835         unsigned int fragment_next;
 836
 837         /* TID bitmap for NoAck policy */
 838         u16 noack_map;
 839
 840         /* bit field of ACM bits (BIT(802.1D tag)) */
 841         u8 wmm_acm;
 842
 843         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 844         struct ieee80211_key __rcu *default_unicast_key;
 845         struct ieee80211_key __rcu *default_multicast_key;
 846         struct ieee80211_key __rcu *default_mgmt_key;
 847
 848         u16 sequence_number;
 849         __be16 control_port_protocol;
 850         bool control_port_no_encrypt;
 851         int encrypt_headroom;
 852
 853         atomic_t txqs_len[IEEE80211_NUM_ACS];
 854         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 855         struct mac80211_qos_map __rcu *qos_map;
 856
 857         struct work_struct csa_finalize_work;
 858         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
 859         struct cfg80211_chan_def csa_chandef;
 860
 861         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
 862         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
 863
 864         /* context reservation -- protected with chanctx_mtx */
 865         struct ieee80211_chanctx *reserved_chanctx;
 866         struct cfg80211_chan_def reserved_chandef;
 867         bool reserved_radar_required;
 868         bool reserved_ready;
 869
 870         /* used to reconfigure hardware SM PS */
 871         struct work_struct recalc_smps;
 872
 873         struct work_struct work;
 874         struct sk_buff_head skb_queue;
 875
 876         u8 needed_rx_chains;
 877         enum ieee80211_smps_mode smps_mode;
 878
 879         int user_power_level; /* in dBm */
 880         int ap_power_level; /* in dBm */
 881
 882         bool radar_required;
 883         struct delayed_work dfs_cac_timer_work;
 884
 885         /*
 886          * AP this belongs to: self in AP mode and
 887          * corresponding AP in VLAN mode, NULL for
 888          * all others (might be needed later in IBSS)
 889          */
 890         struct ieee80211_if_ap *bss;
 891
 892         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 893         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 894
 895         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 896         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 897
 898         bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS];
 899         u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX];
 900
 901         union {
 902                 struct ieee80211_if_ap ap;
 903                 struct ieee80211_if_wds wds;
 904                 struct ieee80211_if_vlan vlan;
 905                 struct ieee80211_if_managed mgd;
 906                 struct ieee80211_if_ibss ibss;
 907                 struct ieee80211_if_mesh mesh;
 908                 struct ieee80211_if_ocb ocb;
 909                 u32 mntr_flags;
 910         } u;
 911
 912 #ifdef CONFIG_MAC80211_DEBUGFS
 913         struct {
 914                 struct dentry *subdir_stations;
 915                 struct dentry *default_unicast_key;
 916                 struct dentry *default_multicast_key;
 917                 struct dentry *default_mgmt_key;
 918         } debugfs;
 919 #endif
 920
 921         /* must be last, dynamically sized area in this! */
 922         struct ieee80211_vif vif;
 923 };
 924
 925 static inline
 926 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 927 {
 928         return container_of(p, struct ieee80211_sub_if_data, vif);
 929 }
 930
 931 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 932         __acquires(&sdata->wdev.mtx)
 933 {
 934         mutex_lock(&sdata->wdev.mtx);
 935         __acquire(&sdata->wdev.mtx);
 936 }
 937
 938 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 939         __releases(&sdata->wdev.mtx)
 940 {
 941         mutex_unlock(&sdata->wdev.mtx);
 942         __release(&sdata->wdev.mtx);
 943 }
 944
 945 #define sdata_dereference(p, sdata) \
 946         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
 947
 948 static inline void
 949 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 950 {
 951         lockdep_assert_held(&sdata->wdev.mtx);
 952 }
 953
 954 static inline enum ieee80211_band
 955 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 956 {
 957         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 958         struct ieee80211_chanctx_conf *chanctx_conf;
 959
 960         rcu_read_lock();
 961         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 962         if (!WARN_ON(!chanctx_conf))
 963                 band = chanctx_conf->def.chan->band;
 964         rcu_read_unlock();
 965
 966         return band;
 967 }
 968
 969 static inline int
 970 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 971 {
 972         switch (chandef->width) {
 973         case NL80211_CHAN_WIDTH_5:
 974                 return 2;
 975         case NL80211_CHAN_WIDTH_10:
 976                 return 1;
 977         default:
 978                 return 0;
 979         }
 980 }
 981
 982 static inline int
 983 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 984 {
 985         struct ieee80211_chanctx_conf *chanctx_conf;
 986         int shift = 0;
 987
 988         rcu_read_lock();
 989         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 990         if (chanctx_conf)
 991                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 992         rcu_read_unlock();
 993
 994         return shift;
 995 }
 996
 997 struct ieee80211_rx_agg {
 998         u8 addr[ETH_ALEN];
 999         u16 tid;
1000 };
1001
1002 enum sdata_queue_type {
1003         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
1004         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
1005         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
1006         IEEE80211_SDATA_QUEUE_RX_AGG_START      = 3,
1007         IEEE80211_SDATA_QUEUE_RX_AGG_STOP       = 4,
1008 };
1009
1010 enum {
1011         IEEE80211_RX_MSG        = 1,
1012         IEEE80211_TX_STATUS_MSG = 2,
1013 };
1014
1015 enum queue_stop_reason {
1016         IEEE80211_QUEUE_STOP_REASON_DRIVER,
1017         IEEE80211_QUEUE_STOP_REASON_PS,
1018         IEEE80211_QUEUE_STOP_REASON_CSA,
1019         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1020         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1021         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1022         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1023         IEEE80211_QUEUE_STOP_REASON_FLUSH,
1024         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1025         IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1026
1027         IEEE80211_QUEUE_STOP_REASONS,
1028 };
1029
1030 #ifdef CONFIG_MAC80211_LEDS
1031 struct tpt_led_trigger {
1032         char name[32];
1033         const struct ieee80211_tpt_blink *blink_table;
1034         unsigned int blink_table_len;
1035         struct timer_list timer;
1036         unsigned long prev_traffic;
1037         unsigned long tx_bytes, rx_bytes;
1038         unsigned int active, want;
1039         bool running;
1040 };
1041 #endif
1042
1043 /**
1044  * mac80211 scan flags - currently active scan mode
1045  *
1046  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1047  *      well be on the operating channel
1048  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1049  *      determine if we are on the operating channel or not
1050  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1051  *      channel. This should not interrupt normal traffic.
1052  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1053  *      that the scan completed.
1054  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1055  *      a scan complete for an aborted scan.
1056  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1057  *      cancelled.
1058  */
1059 enum {
1060         SCAN_SW_SCANNING,
1061         SCAN_HW_SCANNING,
1062         SCAN_ONCHANNEL_SCANNING,
1063         SCAN_COMPLETED,
1064         SCAN_ABORTED,
1065         SCAN_HW_CANCELLED,
1066 };
1067
1068 /**
1069  * enum mac80211_scan_state - scan state machine states
1070  *
1071  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1072  *      determines if we should keep on scanning or switch back to the
1073  *      operating channel
1074  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1075  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1076  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1077  *      send out data
1078  * @SCAN_RESUME: Resume the scan and scan the next channel
1079  * @SCAN_ABORT: Abort the scan and go back to operating channel
1080  */
1081 enum mac80211_scan_state {
1082         SCAN_DECISION,
1083         SCAN_SET_CHANNEL,
1084         SCAN_SEND_PROBE,
1085         SCAN_SUSPEND,
1086         SCAN_RESUME,
1087         SCAN_ABORT,
1088 };
1089
1090 struct ieee80211_local {
1091         /* embed the driver visible part.
1092          * don't cast (use the static inlines below), but we keep
1093          * it first anyway so they become a no-op */
1094         struct ieee80211_hw hw;
1095
1096         const struct ieee80211_ops *ops;
1097
1098         /*
1099          * private workqueue to mac80211. mac80211 makes this accessible
1100          * via ieee80211_queue_work()
1101          */
1102         struct workqueue_struct *workqueue;
1103
1104         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1105         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1106         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1107         spinlock_t queue_stop_reason_lock;
1108
1109         int open_count;
1110         int monitors, cooked_mntrs;
1111         /* number of interfaces with corresponding FIF_ flags */
1112         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1113             fif_probe_req;
1114         int probe_req_reg;
1115         unsigned int filter_flags; /* FIF_* */
1116
1117         bool wiphy_ciphers_allocated;
1118
1119         bool use_chanctx;
1120
1121         /* protects the aggregated multicast list and filter calls */
1122         spinlock_t filter_lock;
1123
1124         /* used for uploading changed mc list */
1125         struct work_struct reconfig_filter;
1126
1127         /* aggregated multicast list */
1128         struct netdev_hw_addr_list mc_list;
1129
1130         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1131
1132         /*
1133          * suspended is true if we finished all the suspend _and_ we have
1134          * not yet come up from resume. This is to be used by mac80211
1135          * to ensure driver sanity during suspend and mac80211's own
1136          * sanity. It can eventually be used for WoW as well.
1137          */
1138         bool suspended;
1139
1140         /*
1141          * Resuming is true while suspended, but when we're reprogramming the
1142          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1143          * again even though some other parts of the stack are still suspended
1144          * and we still drop received frames to avoid waking the stack.
1145          */
1146         bool resuming;
1147
1148         /*
1149          * quiescing is true during the suspend process _only_ to
1150          * ease timer cancelling etc.
1151          */
1152         bool quiescing;
1153
1154         /* device is started */
1155         bool started;
1156
1157         /* device is during a HW reconfig */
1158         bool in_reconfig;
1159
1160         /* wowlan is enabled -- don't reconfig on resume */
1161         bool wowlan;
1162
1163         struct work_struct radar_detected_work;
1164
1165         /* number of RX chains the hardware has */
1166         u8 rx_chains;
1167
1168         int tx_headroom; /* required headroom for hardware/radiotap */
1169
1170         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1171          * added to skb_queue will be processed, but frames in
1172          * skb_queue_unreliable may be dropped if the total length of these
1173          * queues increases over the limit. */
1174 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1175         struct tasklet_struct tasklet;
1176         struct sk_buff_head skb_queue;
1177         struct sk_buff_head skb_queue_unreliable;
1178
1179         spinlock_t rx_path_lock;
1180
1181         /* Station data */
1182         /*
1183          * The mutex only protects the list, hash table and
1184          * counter, reads are done with RCU.
1185          */
1186         struct mutex sta_mtx;
1187         spinlock_t tim_lock;
1188         unsigned long num_sta;
1189         struct list_head sta_list;
1190         struct rhashtable sta_hash;
1191         struct timer_list sta_cleanup;
1192         int sta_generation;
1193
1194         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1195         struct tasklet_struct tx_pending_tasklet;
1196
1197         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1198
1199         /* number of interfaces with allmulti RX */
1200         atomic_t iff_allmultis;
1201
1202         struct rate_control_ref *rate_ctrl;
1203
1204         struct crypto_cipher *wep_tx_tfm;
1205         struct crypto_cipher *wep_rx_tfm;
1206         u32 wep_iv;
1207
1208         /* see iface.c */
1209         struct list_head interfaces;
1210         struct mutex iflist_mtx;
1211
1212         /*
1213          * Key mutex, protects sdata's key_list and sta_info's
1214          * key pointers (write access, they're RCU.)
1215          */
1216         struct mutex key_mtx;
1217
1218         /* mutex for scan and work locking */
1219         struct mutex mtx;
1220
1221         /* Scanning and BSS list */
1222         unsigned long scanning;
1223         struct cfg80211_ssid scan_ssid;
1224         struct cfg80211_scan_request *int_scan_req;
1225         struct cfg80211_scan_request __rcu *scan_req;
1226         struct ieee80211_scan_request *hw_scan_req;
1227         struct cfg80211_chan_def scan_chandef;
1228         enum ieee80211_band hw_scan_band;
1229         int scan_channel_idx;
1230         int scan_ies_len;
1231         int hw_scan_ies_bufsize;
1232
1233         struct work_struct sched_scan_stopped_work;
1234         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1235         struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1236         u8 scan_addr[ETH_ALEN];
1237
1238         unsigned long leave_oper_channel_time;
1239         enum mac80211_scan_state next_scan_state;
1240         struct delayed_work scan_work;
1241         struct ieee80211_sub_if_data __rcu *scan_sdata;
1242         /* For backward compatibility only -- do not use */
1243         struct cfg80211_chan_def _oper_chandef;
1244
1245         /* Temporary remain-on-channel for off-channel operations */
1246         struct ieee80211_channel *tmp_channel;
1247
1248         /* channel contexts */
1249         struct list_head chanctx_list;
1250         struct mutex chanctx_mtx;
1251
1252 #ifdef CONFIG_MAC80211_LEDS
1253         struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1254         struct led_trigger tpt_led;
1255         atomic_t tx_led_active, rx_led_active, assoc_led_active;
1256         atomic_t radio_led_active, tpt_led_active;
1257         struct tpt_led_trigger *tpt_led_trigger;
1258 #endif
1259
1260 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1261         /* SNMP counters */
1262         /* dot11CountersTable */
1263         u32 dot11TransmittedFragmentCount;
1264         u32 dot11MulticastTransmittedFrameCount;
1265         u32 dot11FailedCount;
1266         u32 dot11RetryCount;
1267         u32 dot11MultipleRetryCount;
1268         u32 dot11FrameDuplicateCount;
1269         u32 dot11ReceivedFragmentCount;
1270         u32 dot11MulticastReceivedFrameCount;
1271         u32 dot11TransmittedFrameCount;
1272
1273         /* TX/RX handler statistics */
1274         unsigned int tx_handlers_drop;
1275         unsigned int tx_handlers_queued;
1276         unsigned int tx_handlers_drop_wep;
1277         unsigned int tx_handlers_drop_not_assoc;
1278         unsigned int tx_handlers_drop_unauth_port;
1279         unsigned int rx_handlers_drop;
1280         unsigned int rx_handlers_queued;
1281         unsigned int rx_handlers_drop_nullfunc;
1282         unsigned int rx_handlers_drop_defrag;
1283         unsigned int tx_expand_skb_head;
1284         unsigned int tx_expand_skb_head_cloned;
1285         unsigned int rx_expand_skb_head_defrag;
1286         unsigned int rx_handlers_fragments;
1287         unsigned int tx_status_drop;
1288 #define I802_DEBUG_INC(c) (c)++
1289 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1290 #define I802_DEBUG_INC(c) do { } while (0)
1291 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1292
1293
1294         int total_ps_buffered; /* total number of all buffered unicast and
1295                                 * multicast packets for power saving stations
1296                                 */
1297
1298         bool pspolling;
1299         bool offchannel_ps_enabled;
1300         /*
1301          * PS can only be enabled when we have exactly one managed
1302          * interface (and monitors) in PS, this then points there.
1303          */
1304         struct ieee80211_sub_if_data *ps_sdata;
1305         struct work_struct dynamic_ps_enable_work;
1306         struct work_struct dynamic_ps_disable_work;
1307         struct timer_list dynamic_ps_timer;
1308         struct notifier_block ifa_notifier;
1309         struct notifier_block ifa6_notifier;
1310
1311         /*
1312          * The dynamic ps timeout configured from user space via WEXT -
1313          * this will override whatever chosen by mac80211 internally.
1314          */
1315         int dynamic_ps_forced_timeout;
1316
1317         int user_power_level; /* in dBm, for all interfaces */
1318
1319         enum ieee80211_smps_mode smps_mode;
1320
1321         struct work_struct restart_work;
1322
1323 #ifdef CONFIG_MAC80211_DEBUGFS
1324         struct local_debugfsdentries {
1325                 struct dentry *rcdir;
1326                 struct dentry *keys;
1327         } debugfs;
1328 #endif
1329
1330         /*
1331          * Remain-on-channel support
1332          */
1333         struct delayed_work roc_work;
1334         struct list_head roc_list;
1335         struct work_struct hw_roc_start, hw_roc_done;
1336         unsigned long hw_roc_start_time;
1337         u64 roc_cookie_counter;
1338
1339         struct idr ack_status_frames;
1340         spinlock_t ack_status_lock;
1341
1342         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1343
1344         /* virtual monitor interface */
1345         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1346         struct cfg80211_chan_def monitor_chandef;
1347
1348         /* extended capabilities provided by mac80211 */
1349         u8 ext_capa[8];
1350
1351         /* TDLS channel switch */
1352         struct work_struct tdls_chsw_work;
1353         struct sk_buff_head skb_queue_tdls_chsw;
1354 };
1355
1356 static inline struct ieee80211_sub_if_data *
1357 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1358 {
1359         return netdev_priv(dev);
1360 }
1361
1362 static inline struct ieee80211_sub_if_data *
1363 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1364 {
1365         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1366 }
1367
1368 /* this struct represents 802.11n's RA/TID combination */
1369 struct ieee80211_ra_tid {
1370         u8 ra[ETH_ALEN];
1371         u16 tid;
1372 };
1373
1374 /* this struct holds the value parsing from channel switch IE  */
1375 struct ieee80211_csa_ie {
1376         struct cfg80211_chan_def chandef;
1377         u8 mode;
1378         u8 count;
1379         u8 ttl;
1380         u16 pre_value;
1381 };
1382
1383 /* Parsed Information Elements */
1384 struct ieee802_11_elems {
1385         const u8 *ie_start;
1386         size_t total_len;
1387
1388         /* pointers to IEs */
1389         const struct ieee80211_tdls_lnkie *lnk_id;
1390         const struct ieee80211_ch_switch_timing *ch_sw_timing;
1391         const u8 *ext_capab;
1392         const u8 *ssid;
1393         const u8 *supp_rates;
1394         const u8 *ds_params;
1395         const struct ieee80211_tim_ie *tim;
1396         const u8 *challenge;
1397         const u8 *rsn;
1398         const u8 *erp_info;
1399         const u8 *ext_supp_rates;
1400         const u8 *wmm_info;
1401         const u8 *wmm_param;
1402         const struct ieee80211_ht_cap *ht_cap_elem;
1403         const struct ieee80211_ht_operation *ht_operation;
1404         const struct ieee80211_vht_cap *vht_cap_elem;
1405         const struct ieee80211_vht_operation *vht_operation;
1406         const struct ieee80211_meshconf_ie *mesh_config;
1407         const u8 *mesh_id;
1408         const u8 *peering;
1409         const __le16 *awake_window;
1410         const u8 *preq;
1411         const u8 *prep;
1412         const u8 *perr;
1413         const struct ieee80211_rann_ie *rann;
1414         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1415         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1416         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1417         const u8 *country_elem;
1418         const u8 *pwr_constr_elem;
1419         const u8 *cisco_dtpc_elem;
1420         const struct ieee80211_timeout_interval_ie *timeout_int;
1421         const u8 *opmode_notif;
1422         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1423         const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1424
1425         /* length of them, respectively */
1426         u8 ext_capab_len;
1427         u8 ssid_len;
1428         u8 supp_rates_len;
1429         u8 tim_len;
1430         u8 challenge_len;
1431         u8 rsn_len;
1432         u8 ext_supp_rates_len;
1433         u8 wmm_info_len;
1434         u8 wmm_param_len;
1435         u8 mesh_id_len;
1436         u8 peering_len;
1437         u8 preq_len;
1438         u8 prep_len;
1439         u8 perr_len;
1440         u8 country_elem_len;
1441
1442         /* whether a parse error occurred while retrieving these elements */
1443         bool parse_error;
1444 };
1445
1446 static inline struct ieee80211_local *hw_to_local(
1447         struct ieee80211_hw *hw)
1448 {
1449         return container_of(hw, struct ieee80211_local, hw);
1450 }
1451
1452 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1453 {
1454         return container_of(txq, struct txq_info, txq);
1455 }
1456
1457 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1458 {
1459         return ether_addr_equal(raddr, addr) ||
1460                is_broadcast_ether_addr(raddr);
1461 }
1462
1463 static inline bool
1464 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1465 {
1466         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1467                      status->flag & RX_FLAG_MACTIME_END);
1468         if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1469                 return true;
1470         /* can't handle HT/VHT preamble yet */
1471         if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1472             !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT)))
1473                 return true;
1474         return false;
1475 }
1476
1477 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1478                                      struct ieee80211_rx_status *status,
1479                                      unsigned int mpdu_len,
1480                                      unsigned int mpdu_offset);
1481 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1482 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1483 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1484                                       u32 changed);
1485 void ieee80211_configure_filter(struct ieee80211_local *local);
1486 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1487
1488 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1489 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1490                              u64 *cookie, gfp_t gfp);
1491
1492 /* STA code */
1493 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1494 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1495                        struct cfg80211_auth_request *req);
1496 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1497                         struct cfg80211_assoc_request *req);
1498 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1499                          struct cfg80211_deauth_request *req);
1500 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1501                            struct cfg80211_disassoc_request *req);
1502 void ieee80211_send_pspoll(struct ieee80211_local *local,
1503                            struct ieee80211_sub_if_data *sdata);
1504 void ieee80211_recalc_ps(struct ieee80211_local *local);
1505 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1506 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1507 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1508 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1509                                   struct sk_buff *skb);
1510 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1511 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1512 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1513 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1514                                   __le16 fc, bool acked);
1515 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1516 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1517 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1518
1519 /* IBSS code */
1520 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1521 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1522 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1523                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1524 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1525                         struct cfg80211_ibss_params *params);
1526 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1527 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1528 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1529                                    struct sk_buff *skb);
1530 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1531                               struct cfg80211_csa_settings *csa_settings);
1532 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1533 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1534
1535 /* OCB code */
1536 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1537 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1538                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1539 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1540 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1541                        struct ocb_setup *setup);
1542 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1543
1544 /* mesh code */
1545 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1546 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1547                                    struct sk_buff *skb);
1548 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1549                               struct cfg80211_csa_settings *csa_settings);
1550 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1551
1552 /* scan/BSS handling */
1553 void ieee80211_scan_work(struct work_struct *work);
1554 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1555                                 const u8 *ssid, u8 ssid_len,
1556                                 struct ieee80211_channel **channels,
1557                                 unsigned int n_channels,
1558                                 enum nl80211_bss_scan_width scan_width);
1559 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1560                            struct cfg80211_scan_request *req);
1561 void ieee80211_scan_cancel(struct ieee80211_local *local);
1562 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1563 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1564
1565 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1566 struct ieee80211_bss *
1567 ieee80211_bss_info_update(struct ieee80211_local *local,
1568                           struct ieee80211_rx_status *rx_status,
1569                           struct ieee80211_mgmt *mgmt,
1570                           size_t len,
1571                           struct ieee802_11_elems *elems,
1572                           struct ieee80211_channel *channel);
1573 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1574                           struct ieee80211_bss *bss);
1575
1576 /* scheduled scan handling */
1577 int
1578 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1579                                      struct cfg80211_sched_scan_request *req);
1580 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1581                                        struct cfg80211_sched_scan_request *req);
1582 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1583 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1584 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1585
1586 /* off-channel/mgmt-tx */
1587 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1588 void ieee80211_offchannel_return(struct ieee80211_local *local);
1589 void ieee80211_roc_setup(struct ieee80211_local *local);
1590 void ieee80211_start_next_roc(struct ieee80211_local *local);
1591 void ieee80211_roc_purge(struct ieee80211_local *local,
1592                          struct ieee80211_sub_if_data *sdata);
1593 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1594                                 struct ieee80211_channel *chan,
1595                                 unsigned int duration, u64 *cookie);
1596 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1597                                        struct wireless_dev *wdev, u64 cookie);
1598 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1599                       struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1600 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1601                                   struct wireless_dev *wdev, u64 cookie);
1602
1603 /* channel switch handling */
1604 void ieee80211_csa_finalize_work(struct work_struct *work);
1605 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1606                              struct cfg80211_csa_settings *params);
1607
1608 /* interface handling */
1609 int ieee80211_iface_init(void);
1610 void ieee80211_iface_exit(void);
1611 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1612                      unsigned char name_assign_type,
1613                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1614                      struct vif_params *params);
1615 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1616                              enum nl80211_iftype type);
1617 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1618 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1619 u32 ieee80211_idle_off(struct ieee80211_local *local);
1620 void ieee80211_recalc_idle(struct ieee80211_local *local);
1621 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1622                                     const int offset);
1623 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1624 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1625 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1626 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1627
1628 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1629 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1630                               bool update_bss);
1631
1632 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1633 {
1634         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1635 }
1636
1637 /* tx handling */
1638 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1639 void ieee80211_tx_pending(unsigned long data);
1640 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1641                                          struct net_device *dev);
1642 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1643                                        struct net_device *dev);
1644 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1645                                   struct net_device *dev,
1646                                   u32 info_flags);
1647 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1648                               struct sk_buff_head *skbs);
1649 struct sk_buff *
1650 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1651                               struct sk_buff *skb, u32 info_flags);
1652 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1653                           struct ieee80211_supported_band *sband,
1654                           int retry_count, int shift, bool send_to_cooked);
1655
1656 void ieee80211_check_fast_xmit(struct sta_info *sta);
1657 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1658 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1659 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1660
1661 /* HT */
1662 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1663                                      struct ieee80211_sta_ht_cap *ht_cap);
1664 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1665                                        struct ieee80211_supported_band *sband,
1666                                        const struct ieee80211_ht_cap *ht_cap_ie,
1667                                        struct sta_info *sta);
1668 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1669                           const u8 *da, u16 tid,
1670                           u16 initiator, u16 reason_code);
1671 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1672                                enum ieee80211_smps_mode smps, const u8 *da,
1673                                const u8 *bssid);
1674 void ieee80211_request_smps_ap_work(struct work_struct *work);
1675 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1676 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1677                                    enum ieee80211_smps_mode smps_mode_new);
1678
1679 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1680                                      u16 initiator, u16 reason, bool stop);
1681 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1682                                     u16 initiator, u16 reason, bool stop);
1683 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1684                                      u8 dialog_token, u16 timeout,
1685                                      u16 start_seq_num, u16 ba_policy, u16 tid,
1686                                      u16 buf_size, bool tx, bool auto_seq);
1687 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1688                                          enum ieee80211_agg_stop_reason reason);
1689 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1690                              struct sta_info *sta,
1691                              struct ieee80211_mgmt *mgmt, size_t len);
1692 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1693                                   struct sta_info *sta,
1694                                   struct ieee80211_mgmt *mgmt,
1695                                   size_t len);
1696 void ieee80211_process_addba_request(struct ieee80211_local *local,
1697                                      struct sta_info *sta,
1698                                      struct ieee80211_mgmt *mgmt,
1699                                      size_t len);
1700
1701 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1702                                    enum ieee80211_agg_stop_reason reason);
1703 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1704                                     enum ieee80211_agg_stop_reason reason);
1705 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1706 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1707 void ieee80211_ba_session_work(struct work_struct *work);
1708 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1709 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1710
1711 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1712
1713 /* VHT */
1714 void
1715 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1716                                     struct ieee80211_supported_band *sband,
1717                                     const struct ieee80211_vht_cap *vht_cap_ie,
1718                                     struct sta_info *sta);
1719 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1720 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1721 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1722 enum ieee80211_sta_rx_bandwidth
1723 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1724 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1725 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1726 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1727                                  struct ieee80211_mgmt *mgmt);
1728 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1729                                   struct sta_info *sta, u8 opmode,
1730                                   enum ieee80211_band band);
1731 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1732                                  struct sta_info *sta, u8 opmode,
1733                                  enum ieee80211_band band);
1734 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1735                                       struct ieee80211_sta_vht_cap *vht_cap);
1736 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1737                                      u16 vht_mask[NL80211_VHT_NSS_MAX]);
1738
1739 /* Spectrum management */
1740 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1741                                        struct ieee80211_mgmt *mgmt,
1742                                        size_t len);
1743 /**
1744  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1745  * @sdata: the sdata of the interface which has received the frame
1746  * @elems: parsed 802.11 elements received with the frame
1747  * @current_band: indicates the current band
1748  * @sta_flags: contains information about own capabilities and restrictions
1749  *      to decide which channel switch announcements can be accepted. Only the
1750  *      following subset of &enum ieee80211_sta_flags are evaluated:
1751  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1752  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1753  *      %IEEE80211_STA_DISABLE_160MHZ.
1754  * @bssid: the currently connected bssid (for reporting)
1755  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1756         All of them will be filled with if success only.
1757  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1758  */
1759 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1760                                  struct ieee802_11_elems *elems,
1761                                  enum ieee80211_band current_band,
1762                                  u32 sta_flags, u8 *bssid,
1763                                  struct ieee80211_csa_ie *csa_ie);
1764
1765 /* Suspend/resume and hw reconfiguration */
1766 int ieee80211_reconfig(struct ieee80211_local *local);
1767 void ieee80211_stop_device(struct ieee80211_local *local);
1768
1769 int __ieee80211_suspend(struct ieee80211_hw *hw,
1770                         struct cfg80211_wowlan *wowlan);
1771
1772 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1773 {
1774         struct ieee80211_local *local = hw_to_local(hw);
1775
1776         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1777              !test_bit(SCAN_COMPLETED, &local->scanning),
1778                 "%s: resume with hardware scan still in progress\n",
1779                 wiphy_name(hw->wiphy));
1780
1781         return ieee80211_reconfig(hw_to_local(hw));
1782 }
1783
1784 /* utility functions/constants */
1785 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1786 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1787                              int rate, int erp, int short_preamble,
1788                              int shift);
1789 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1790                                bool bss_notify, bool enable_qos);
1791 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1792                     struct sta_info *sta, struct sk_buff *skb);
1793
1794 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1795                                  struct sk_buff *skb, int tid,
1796                                  enum ieee80211_band band);
1797
1798 static inline void
1799 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1800                           struct sk_buff *skb, int tid,
1801                           enum ieee80211_band band)
1802 {
1803         rcu_read_lock();
1804         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1805         rcu_read_unlock();
1806 }
1807
1808 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1809                                         struct sk_buff *skb, int tid)
1810 {
1811         struct ieee80211_chanctx_conf *chanctx_conf;
1812
1813         rcu_read_lock();
1814         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1815         if (WARN_ON(!chanctx_conf)) {
1816                 rcu_read_unlock();
1817                 kfree_skb(skb);
1818                 return;
1819         }
1820
1821         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1822                                     chanctx_conf->def.chan->band);
1823         rcu_read_unlock();
1824 }
1825
1826 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1827                                     struct sk_buff *skb)
1828 {
1829         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1830         ieee80211_tx_skb_tid(sdata, skb, 7);
1831 }
1832
1833 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1834                                struct ieee802_11_elems *elems,
1835                                u64 filter, u32 crc);
1836 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1837                                           bool action,
1838                                           struct ieee802_11_elems *elems)
1839 {
1840         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1841 }
1842
1843
1844 extern const int ieee802_1d_to_ac[8];
1845
1846 static inline int ieee80211_ac_from_tid(int tid)
1847 {
1848         return ieee802_1d_to_ac[tid & 7];
1849 }
1850
1851 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1852 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1853 void ieee80211_dynamic_ps_timer(unsigned long data);
1854 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1855                              struct ieee80211_sub_if_data *sdata,
1856                              bool powersave);
1857 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1858                              struct ieee80211_hdr *hdr);
1859 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1860                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1861
1862 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1863                                      unsigned long queues,
1864                                      enum queue_stop_reason reason,
1865                                      bool refcounted);
1866 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1867                                struct ieee80211_sub_if_data *sdata,
1868                                enum queue_stop_reason reason);
1869 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1870                                struct ieee80211_sub_if_data *sdata,
1871                                enum queue_stop_reason reason);
1872 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1873                                      unsigned long queues,
1874                                      enum queue_stop_reason reason,
1875                                      bool refcounted);
1876 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1877                                     enum queue_stop_reason reason,
1878                                     bool refcounted);
1879 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1880                                     enum queue_stop_reason reason,
1881                                     bool refcounted);
1882 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1883 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1884                                struct sk_buff *skb);
1885 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1886                                 struct sk_buff_head *skbs);
1887 void ieee80211_flush_queues(struct ieee80211_local *local,
1888                             struct ieee80211_sub_if_data *sdata, bool drop);
1889 void __ieee80211_flush_queues(struct ieee80211_local *local,
1890                               struct ieee80211_sub_if_data *sdata,
1891                               unsigned int queues, bool drop);
1892
1893 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1894 {
1895         /*
1896          * If quiescing is set, we are racing with __ieee80211_suspend.
1897          * __ieee80211_suspend flushes the workers after setting quiescing,
1898          * and we check quiescing / suspended before enqueing new workers.
1899          * We should abort the worker to avoid the races below.
1900          */
1901         if (local->quiescing)
1902                 return false;
1903
1904         /*
1905          * We might already be suspended if the following scenario occurs:
1906          * __ieee80211_suspend          Control path
1907          *
1908          *                              if (local->quiescing)
1909          *                                      return;
1910          * local->quiescing = true;
1911          * flush_workqueue();
1912          *                              queue_work(...);
1913          * local->suspended = true;
1914          * local->quiescing = false;
1915          *                              worker starts running...
1916          */
1917         if (local->suspended)
1918                 return false;
1919
1920         return true;
1921 }
1922
1923 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
1924                              struct sta_info *sta,
1925                              struct txq_info *txq, int tid);
1926 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1927                          u16 transaction, u16 auth_alg, u16 status,
1928                          const u8 *extra, size_t extra_len, const u8 *bssid,
1929                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1930                          u32 tx_flags);
1931 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1932                                     const u8 *bssid, u16 stype, u16 reason,
1933                                     bool send_frame, u8 *frame_buf);
1934 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1935                              size_t buffer_len,
1936                              struct ieee80211_scan_ies *ie_desc,
1937                              const u8 *ie, size_t ie_len,
1938                              u8 bands_used, u32 *rate_masks,
1939                              struct cfg80211_chan_def *chandef);
1940 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1941                                           const u8 *src, const u8 *dst,
1942                                           u32 ratemask,
1943                                           struct ieee80211_channel *chan,
1944                                           const u8 *ssid, size_t ssid_len,
1945                                           const u8 *ie, size_t ie_len,
1946                                           bool directed);
1947 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1948                               const u8 *src, const u8 *dst,
1949                               const u8 *ssid, size_t ssid_len,
1950                               const u8 *ie, size_t ie_len,
1951                               u32 ratemask, bool directed, u32 tx_flags,
1952                               struct ieee80211_channel *channel, bool scan);
1953
1954 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1955                             struct ieee802_11_elems *elems,
1956                             enum ieee80211_band band, u32 *basic_rates);
1957 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1958                                  enum ieee80211_smps_mode smps_mode);
1959 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1960                                 enum ieee80211_smps_mode smps_mode);
1961 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1962 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1963
1964 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1965 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1966                               u16 cap);
1967 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1968                                const struct cfg80211_chan_def *chandef,
1969                                u16 prot_mode, bool rifs_mode);
1970 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1971                                u32 cap);
1972 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1973                                 const struct cfg80211_chan_def *chandef);
1974 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1975                              const struct ieee80211_supported_band *sband,
1976                              const u8 *srates, int srates_len, u32 *rates);
1977 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1978                             struct sk_buff *skb, bool need_basic,
1979                             enum ieee80211_band band);
1980 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1981                                 struct sk_buff *skb, bool need_basic,
1982                                 enum ieee80211_band band);
1983 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1984
1985 /* channel management */
1986 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
1987                                struct cfg80211_chan_def *chandef);
1988 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
1989                                 struct cfg80211_chan_def *chandef);
1990 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1991
1992 int __must_check
1993 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1994                           const struct cfg80211_chan_def *chandef,
1995                           enum ieee80211_chanctx_mode mode);
1996 int __must_check
1997 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1998                               const struct cfg80211_chan_def *chandef,
1999                               enum ieee80211_chanctx_mode mode,
2000                               bool radar_required);
2001 int __must_check
2002 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2003 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2004
2005 int __must_check
2006 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2007                                const struct cfg80211_chan_def *chandef,
2008                                u32 *changed);
2009 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2010 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2011 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2012                                          bool clear);
2013 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2014                                struct ieee80211_chanctx *ctx);
2015
2016 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2017                                    struct ieee80211_chanctx *chanctx);
2018 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2019                                       struct ieee80211_chanctx *ctx);
2020 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2021
2022 void ieee80211_dfs_cac_timer(unsigned long data);
2023 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2024 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2025 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2026 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2027                               struct cfg80211_csa_settings *csa_settings);
2028
2029 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2030 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2031 const struct ieee80211_cipher_scheme *
2032 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2033                  enum nl80211_iftype iftype);
2034 int ieee80211_cs_headroom(struct ieee80211_local *local,
2035                           struct cfg80211_crypto_settings *crypto,
2036                           enum nl80211_iftype iftype);
2037 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2038                            struct ieee80211_sub_if_data *sdata);
2039 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2040                                  const struct cfg80211_chan_def *chandef,
2041                                  enum ieee80211_chanctx_mode chanmode,
2042                                  u8 radar_detect);
2043 int ieee80211_max_num_channels(struct ieee80211_local *local);
2044 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2045 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2046                                        struct ieee80211_chanctx *ctx);
2047
2048 /* TDLS */
2049 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2050                         const u8 *peer, u8 action_code, u8 dialog_token,
2051                         u16 status_code, u32 peer_capability,
2052                         bool initiator, const u8 *extra_ies,
2053                         size_t extra_ies_len);
2054 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2055                         const u8 *peer, enum nl80211_tdls_operation oper);
2056 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2057 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2058                                   const u8 *addr, u8 oper_class,
2059                                   struct cfg80211_chan_def *chandef);
2060 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2061                                           struct net_device *dev,
2062                                           const u8 *addr);
2063 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2064 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2065
2066 extern const struct ethtool_ops ieee80211_ethtool_ops;
2067
2068 #ifdef CONFIG_MAC80211_NOINLINE
2069 #define debug_noinline noinline
2070 #else
2071 #define debug_noinline
2072 #endif
2073
2074 #endif /* IEEE80211_I_H */