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