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