net/mac80211/ieee80211_i.h

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005, Devicescape Software, Inc.
   4  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   5  * Copyright 2007-2010  Johannes Berg <johannes@sipsolutions.net>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef IEEE80211_I_H
  13 #define IEEE80211_I_H
  14
  15 #include <linux/kernel.h>
  16 #include <linux/device.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/types.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/leds.h>
  27 #include <linux/idr.h>
  28 #include <net/ieee80211_radiotap.h>
  29 #include <net/cfg80211.h>
  30 #include <net/mac80211.h>
  31 #include "key.h"
  32 #include "sta_info.h"
  33 #include "debug.h"
  34
  35 struct ieee80211_local;
  36
  37 /* Maximum number of broadcast/multicast frames to buffer when some of the
  38  * associated stations are using power saving. */
  39 #define AP_MAX_BC_BUFFER 128
  40
  41 /* Maximum number of frames buffered to all STAs, including multicast frames.
  42  * Note: increasing this limit increases the potential memory requirement. Each
  43  * frame can be up to about 2 kB long. */
  44 #define TOTAL_MAX_TX_BUFFER 512
  45
  46 /* Required encryption head and tailroom */
  47 #define IEEE80211_ENCRYPT_HEADROOM 8
  48 #define IEEE80211_ENCRYPT_TAILROOM 18
  49
  50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  51  * reception of at least three fragmented frames. This limit can be increased
  52  * by changing this define, at the cost of slower frame reassembly and
  53  * increased memory use (about 2 kB of RAM per entry). */
  54 #define IEEE80211_FRAGMENT_MAX 4
  55
  56 #define TU_TO_JIFFIES(x)        (usecs_to_jiffies((x) * 1024))
  57 #define TU_TO_EXP_TIME(x)       (jiffies + TU_TO_JIFFIES(x))
  58
  59 /*
  60  * Some APs experience problems when working with U-APSD. Decrease the
  61  * probability of that happening by using legacy mode for all ACs but VO.
  62  * The AP that caused us trouble was a Cisco 4410N. It ignores our
  63  * setting, and always treats non-VO ACs as legacy.
  64  */
  65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  66         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  67
  68 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  69         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  70
  71 struct ieee80211_fragment_entry {
  72         unsigned long first_frag_time;
  73         unsigned int seq;
  74         unsigned int rx_queue;
  75         unsigned int last_frag;
  76         unsigned int extra_len;
  77         struct sk_buff_head skb_list;
  78         int ccmp; /* Whether fragments were encrypted with CCMP */
  79         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  80 };
  81
  82
  83 struct ieee80211_bss {
  84         /* don't want to look up all the time */
  85         size_t ssid_len;
  86         u8 ssid[IEEE80211_MAX_SSID_LEN];
  87
  88         u32 device_ts;
  89
  90         u8 dtim_period;
  91
  92         bool wmm_used;
  93         bool uapsd_supported;
  94
  95         unsigned long last_probe_resp;
  96
  97 #ifdef CONFIG_MAC80211_MESH
  98         u8 *mesh_id;
  99         size_t mesh_id_len;
 100         u8 *mesh_cfg;
 101 #endif
 102
 103 #define IEEE80211_MAX_SUPP_RATES 32
 104         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 105         size_t supp_rates_len;
 106
 107         /*
 108          * During association, we save an ERP value from a probe response so
 109          * that we can feed ERP info to the driver when handling the
 110          * association completes. these fields probably won't be up-to-date
 111          * otherwise, you probably don't want to use them.
 112          */
 113         bool has_erp_value;
 114         u8 erp_value;
 115
 116         /* Keep track of the corruption of the last beacon/probe response. */
 117         u8 corrupt_data;
 118
 119         /* Keep track of what bits of information we have valid info for. */
 120         u8 valid_data;
 121 };
 122
 123 /**
 124  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 125  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 126  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 127  *
 128  * These are bss flags that are attached to a bss in the
 129  * @corrupt_data field of &struct ieee80211_bss.
 130  */
 131 enum ieee80211_bss_corrupt_data_flags {
 132         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 133         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 134 };
 135
 136 /**
 137  * enum ieee80211_valid_data_flags - BSS valid data flags
 138  * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE
 139  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 140  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 141  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 142  *
 143  * These are bss flags that are attached to a bss in the
 144  * @valid_data field of &struct ieee80211_bss.  They show which parts
 145  * of the data structure were recieved as a result of an un-corrupted
 146  * beacon/probe response.
 147  */
 148 enum ieee80211_bss_valid_data_flags {
 149         IEEE80211_BSS_VALID_DTIM                = BIT(0),
 150         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 151         IEEE80211_BSS_VALID_RATES               = BIT(2),
 152         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 153 };
 154
 155 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 156 {
 157 #ifdef CONFIG_MAC80211_MESH
 158         return bss->mesh_cfg;
 159 #endif
 160         return NULL;
 161 }
 162
 163 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 164 {
 165 #ifdef CONFIG_MAC80211_MESH
 166         return bss->mesh_id;
 167 #endif
 168         return NULL;
 169 }
 170
 171 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 172 {
 173 #ifdef CONFIG_MAC80211_MESH
 174         return bss->mesh_id_len;
 175 #endif
 176         return 0;
 177 }
 178
 179
 180 typedef unsigned __bitwise__ ieee80211_tx_result;
 181 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 182 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 183 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 184
 185 #define IEEE80211_TX_UNICAST            BIT(1)
 186 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 187
 188 struct ieee80211_tx_data {
 189         struct sk_buff *skb;
 190         struct sk_buff_head skbs;
 191         struct ieee80211_local *local;
 192         struct ieee80211_sub_if_data *sdata;
 193         struct sta_info *sta;
 194         struct ieee80211_key *key;
 195
 196         struct ieee80211_channel *channel;
 197
 198         unsigned int flags;
 199 };
 200
 201
 202 typedef unsigned __bitwise__ ieee80211_rx_result;
 203 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 204 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 205 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 206 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 207
 208 /**
 209  * enum ieee80211_packet_rx_flags - packet RX flags
 210  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 211  *      (incl. multicast frames)
 212  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 213  * @IEEE80211_RX_AMSDU: a-MSDU packet
 214  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 215  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 216  *
 217  * These are per-frame flags that are attached to a frame in the
 218  * @rx_flags field of &struct ieee80211_rx_status.
 219  */
 220 enum ieee80211_packet_rx_flags {
 221         IEEE80211_RX_RA_MATCH                   = BIT(1),
 222         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 223         IEEE80211_RX_AMSDU                      = BIT(3),
 224         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 225         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 226 };
 227
 228 /**
 229  * enum ieee80211_rx_flags - RX data flags
 230  *
 231  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 232  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 233  *      to cfg80211_report_obss_beacon().
 234  *
 235  * These flags are used across handling multiple interfaces
 236  * for a single frame.
 237  */
 238 enum ieee80211_rx_flags {
 239         IEEE80211_RX_CMNTR              = BIT(0),
 240         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 241 };
 242
 243 struct ieee80211_rx_data {
 244         struct sk_buff *skb;
 245         struct ieee80211_local *local;
 246         struct ieee80211_sub_if_data *sdata;
 247         struct sta_info *sta;
 248         struct ieee80211_key *key;
 249
 250         unsigned int flags;
 251
 252         /*
 253          * Index into sequence numbers array, 0..16
 254          * since the last (16) is used for non-QoS,
 255          * will be 16 on non-QoS frames.
 256          */
 257         int seqno_idx;
 258
 259         /*
 260          * Index into the security IV/PN arrays, 0..16
 261          * since the last (16) is used for CCMP-encrypted
 262          * management frames, will be set to 16 on mgmt
 263          * frames and 0 on non-QoS frames.
 264          */
 265         int security_idx;
 266
 267         u32 tkip_iv32;
 268         u16 tkip_iv16;
 269 };
 270
 271 struct beacon_data {
 272         u8 *head, *tail;
 273         int head_len, tail_len;
 274         struct rcu_head rcu_head;
 275 };
 276
 277 struct ieee80211_if_ap {
 278         struct beacon_data __rcu *beacon;
 279         struct sk_buff __rcu *probe_resp;
 280
 281         struct list_head vlans;
 282
 283         /* yes, this looks ugly, but guarantees that we can later use
 284          * bitmap_empty :)
 285          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 286         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 287         struct sk_buff_head ps_bc_buf;
 288         atomic_t num_sta_ps; /* number of stations in PS mode */
 289         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 290         int dtim_count;
 291         bool dtim_bc_mc;
 292 };
 293
 294 struct ieee80211_if_wds {
 295         struct sta_info *sta;
 296         u8 remote_addr[ETH_ALEN];
 297 };
 298
 299 struct ieee80211_if_vlan {
 300         struct list_head list;
 301
 302         /* used for all tx if the VLAN is configured to 4-addr mode */
 303         struct sta_info __rcu *sta;
 304 };
 305
 306 struct mesh_stats {
 307         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 308         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 309         __u32 fwded_frames;             /* Mesh total forwarded frames */
 310         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 311         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 312         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 313         atomic_t estab_plinks;
 314 };
 315
 316 #define PREQ_Q_F_START          0x1
 317 #define PREQ_Q_F_REFRESH        0x2
 318 struct mesh_preq_queue {
 319         struct list_head list;
 320         u8 dst[ETH_ALEN];
 321         u8 flags;
 322 };
 323
 324 #if HZ/100 == 0
 325 #define IEEE80211_ROC_MIN_LEFT  1
 326 #else
 327 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 328 #endif
 329
 330 struct ieee80211_roc_work {
 331         struct list_head list;
 332         struct list_head dependents;
 333
 334         struct delayed_work work;
 335
 336         struct ieee80211_sub_if_data *sdata;
 337
 338         struct ieee80211_channel *chan;
 339         enum nl80211_channel_type chan_type;
 340
 341         bool started, abort, hw_begun, notified;
 342
 343         unsigned long hw_start_time;
 344
 345         u32 duration, req_duration;
 346         struct sk_buff *frame;
 347         u64 mgmt_tx_cookie;
 348 };
 349
 350 /* flags used in struct ieee80211_if_managed.flags */
 351 enum ieee80211_sta_flags {
 352         IEEE80211_STA_BEACON_POLL       = BIT(0),
 353         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 354         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 355         IEEE80211_STA_DISABLE_11N       = BIT(4),
 356         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 357         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 358         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 359         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 360         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 361         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 362 };
 363
 364 struct ieee80211_mgd_auth_data {
 365         struct cfg80211_bss *bss;
 366         unsigned long timeout;
 367         int tries;
 368         u16 algorithm, expected_transaction;
 369
 370         u8 key[WLAN_KEY_LEN_WEP104];
 371         u8 key_len, key_idx;
 372         bool done;
 373
 374         size_t ie_len;
 375         u8 ie[];
 376 };
 377
 378 struct ieee80211_mgd_assoc_data {
 379         struct cfg80211_bss *bss;
 380         const u8 *supp_rates;
 381
 382         unsigned long timeout;
 383         int tries;
 384
 385         u16 capability;
 386         u8 prev_bssid[ETH_ALEN];
 387         u8 ssid[IEEE80211_MAX_SSID_LEN];
 388         u8 ssid_len;
 389         u8 supp_rates_len;
 390         bool wmm, uapsd;
 391         bool have_beacon;
 392         bool sent_assoc;
 393         bool synced;
 394
 395         u8 ap_ht_param;
 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
 410         unsigned long beacon_timeout;
 411         unsigned long probe_timeout;
 412         int probe_send_count;
 413         bool nullfunc_failed;
 414
 415         struct mutex mtx;
 416         struct cfg80211_bss *associated;
 417         struct ieee80211_mgd_auth_data *auth_data;
 418         struct ieee80211_mgd_assoc_data *assoc_data;
 419
 420         u8 bssid[ETH_ALEN];
 421
 422         u16 aid;
 423
 424         unsigned long timers_running; /* used for quiesce/restart */
 425         bool powersave; /* powersave requested for this iface */
 426         bool broken_ap; /* AP is broken -- turn off powersave */
 427         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 428                                  ap_smps, /* smps mode AP thinks we're in */
 429                                  driver_smps_mode; /* smps mode request */
 430
 431         struct work_struct request_smps_work;
 432
 433         unsigned int flags;
 434
 435         bool beacon_crc_valid;
 436         u32 beacon_crc;
 437
 438         enum {
 439                 IEEE80211_MFP_DISABLED,
 440                 IEEE80211_MFP_OPTIONAL,
 441                 IEEE80211_MFP_REQUIRED
 442         } mfp; /* management frame protection */
 443
 444         /*
 445          * Bitmask of enabled u-apsd queues,
 446          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 447          * to take effect.
 448          */
 449         unsigned int uapsd_queues;
 450
 451         /*
 452          * Maximum number of buffered frames AP can deliver during a
 453          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 454          * Needs a new association to take effect.
 455          */
 456         unsigned int uapsd_max_sp_len;
 457
 458         int wmm_last_param_set;
 459
 460         u8 use_4addr;
 461
 462         /* Signal strength from the last Beacon frame in the current BSS. */
 463         int last_beacon_signal;
 464
 465         /*
 466          * Weighted average of the signal strength from Beacon frames in the
 467          * current BSS. This is in units of 1/16 of the signal unit to maintain
 468          * accuracy and to speed up calculations, i.e., the value need to be
 469          * divided by 16 to get the actual value.
 470          */
 471         int ave_beacon_signal;
 472
 473         /*
 474          * Number of Beacon frames used in ave_beacon_signal. This can be used
 475          * to avoid generating less reliable cqm events that would be based
 476          * only on couple of received frames.
 477          */
 478         unsigned int count_beacon_signal;
 479
 480         /*
 481          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 482          * that triggered a cqm event. 0 indicates that no event has been
 483          * generated for the current association.
 484          */
 485         int last_cqm_event_signal;
 486
 487         /*
 488          * State variables for keeping track of RSSI of the AP currently
 489          * connected to and informing driver when RSSI has gone
 490          * below/above a certain threshold.
 491          */
 492         int rssi_min_thold, rssi_max_thold;
 493         int last_ave_beacon_signal;
 494
 495         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 496         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 497 };
 498
 499 struct ieee80211_if_ibss {
 500         struct timer_list timer;
 501
 502         struct mutex mtx;
 503
 504         unsigned long last_scan_completed;
 505
 506         u32 basic_rates;
 507
 508         bool timer_running;
 509
 510         bool fixed_bssid;
 511         bool fixed_channel;
 512         bool privacy;
 513
 514         bool control_port;
 515         unsigned int auth_frame_registrations;
 516
 517         u8 bssid[ETH_ALEN] __aligned(2);
 518         u8 ssid[IEEE80211_MAX_SSID_LEN];
 519         u8 ssid_len, ie_len;
 520         u8 *ie;
 521         struct ieee80211_channel *channel;
 522         enum nl80211_channel_type channel_type;
 523
 524         unsigned long ibss_join_req;
 525         /* probe response/beacon for IBSS */
 526         struct sk_buff __rcu *presp;
 527         struct sk_buff *skb;
 528
 529         spinlock_t incomplete_lock;
 530         struct list_head incomplete_stations;
 531
 532         enum {
 533                 IEEE80211_IBSS_MLME_SEARCH,
 534                 IEEE80211_IBSS_MLME_JOINED,
 535         } state;
 536 };
 537
 538 /**
 539  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 540  *
 541  * these declarations define the interface, which enables
 542  * vendor-specific mesh synchronization
 543  *
 544  */
 545 struct ieee802_11_elems;
 546 struct ieee80211_mesh_sync_ops {
 547         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 548                              u16 stype,
 549                              struct ieee80211_mgmt *mgmt,
 550                              struct ieee802_11_elems *elems,
 551                              struct ieee80211_rx_status *rx_status);
 552         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
 553         /* add other framework functions here */
 554 };
 555
 556 struct ieee80211_if_mesh {
 557         struct timer_list housekeeping_timer;
 558         struct timer_list mesh_path_timer;
 559         struct timer_list mesh_path_root_timer;
 560
 561         unsigned long timers_running;
 562
 563         unsigned long wrkq_flags;
 564
 565         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 566         size_t mesh_id_len;
 567         /* Active Path Selection Protocol Identifier */
 568         u8 mesh_pp_id;
 569         /* Active Path Selection Metric Identifier */
 570         u8 mesh_pm_id;
 571         /* Congestion Control Mode Identifier */
 572         u8 mesh_cc_id;
 573         /* Synchronization Protocol Identifier */
 574         u8 mesh_sp_id;
 575         /* Authentication Protocol Identifier */
 576         u8 mesh_auth_id;
 577         /* Local mesh Sequence Number */
 578         u32 sn;
 579         /* Last used PREQ ID */
 580         u32 preq_id;
 581         atomic_t mpaths;
 582         /* Timestamp of last SN update */
 583         unsigned long last_sn_update;
 584         /* Time when it's ok to send next PERR */
 585         unsigned long next_perr;
 586         /* Timestamp of last PREQ sent */
 587         unsigned long last_preq;
 588         struct mesh_rmc *rmc;
 589         spinlock_t mesh_preq_queue_lock;
 590         struct mesh_preq_queue preq_queue;
 591         int preq_queue_len;
 592         struct mesh_stats mshstats;
 593         struct mesh_config mshcfg;
 594         u32 mesh_seqnum;
 595         bool accepting_plinks;
 596         int num_gates;
 597         const u8 *ie;
 598         u8 ie_len;
 599         enum {
 600                 IEEE80211_MESH_SEC_NONE = 0x0,
 601                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 602                 IEEE80211_MESH_SEC_SECURED = 0x2,
 603         } security;
 604         /* Extensible Synchronization Framework */
 605         struct ieee80211_mesh_sync_ops *sync_ops;
 606         s64 sync_offset_clockdrift_max;
 607         spinlock_t sync_offset_lock;
 608         bool adjusting_tbtt;
 609 };
 610
 611 #ifdef CONFIG_MAC80211_MESH
 612 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 613         do { (msh)->mshstats.name++; } while (0)
 614 #else
 615 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 616         do { } while (0)
 617 #endif
 618
 619 /**
 620  * enum ieee80211_sub_if_data_flags - virtual interface flags
 621  *
 622  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 623  * @IEEE80211_SDATA_PROMISC: interface is promisc
 624  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 625  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 626  *      associated stations and deliver multicast frames both
 627  *      back to wireless media and to the local net stack.
 628  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 629  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 630  */
 631 enum ieee80211_sub_if_data_flags {
 632         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 633         IEEE80211_SDATA_PROMISC                 = BIT(1),
 634         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 635         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 636         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 637         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 638 };
 639
 640 /**
 641  * enum ieee80211_sdata_state_bits - virtual interface state bits
 642  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 643  *      mirrors netif_running() but is separate for interface type
 644  *      change handling while the interface is up
 645  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 646  *      mode, so queues are stopped
 647  */
 648 enum ieee80211_sdata_state_bits {
 649         SDATA_STATE_RUNNING,
 650         SDATA_STATE_OFFCHANNEL,
 651 };
 652
 653 struct ieee80211_sub_if_data {
 654         struct list_head list;
 655
 656         struct wireless_dev wdev;
 657
 658         /* keys */
 659         struct list_head key_list;
 660
 661         /* count for keys needing tailroom space allocation */
 662         int crypto_tx_tailroom_needed_cnt;
 663
 664         struct net_device *dev;
 665         struct ieee80211_local *local;
 666
 667         unsigned int flags;
 668
 669         unsigned long state;
 670
 671         int drop_unencrypted;
 672
 673         char name[IFNAMSIZ];
 674
 675         /* to detect idle changes */
 676         bool old_idle;
 677
 678         /* Fragment table for host-based reassembly */
 679         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 680         unsigned int fragment_next;
 681
 682         /* TID bitmap for NoAck policy */
 683         u16 noack_map;
 684
 685         /* bit field of ACM bits (BIT(802.1D tag)) */
 686         u8 wmm_acm;
 687
 688         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 689         struct ieee80211_key __rcu *default_unicast_key;
 690         struct ieee80211_key __rcu *default_multicast_key;
 691         struct ieee80211_key __rcu *default_mgmt_key;
 692
 693         u16 sequence_number;
 694         __be16 control_port_protocol;
 695         bool control_port_no_encrypt;
 696
 697         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 698
 699         struct work_struct work;
 700         struct sk_buff_head skb_queue;
 701
 702         bool arp_filter_state;
 703
 704         /*
 705          * AP this belongs to: self in AP mode and
 706          * corresponding AP in VLAN mode, NULL for
 707          * all others (might be needed later in IBSS)
 708          */
 709         struct ieee80211_if_ap *bss;
 710
 711         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 712         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 713         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 714
 715         union {
 716                 struct ieee80211_if_ap ap;
 717                 struct ieee80211_if_wds wds;
 718                 struct ieee80211_if_vlan vlan;
 719                 struct ieee80211_if_managed mgd;
 720                 struct ieee80211_if_ibss ibss;
 721                 struct ieee80211_if_mesh mesh;
 722                 u32 mntr_flags;
 723         } u;
 724
 725 #ifdef CONFIG_MAC80211_DEBUGFS
 726         struct {
 727                 struct dentry *dir;
 728                 struct dentry *subdir_stations;
 729                 struct dentry *default_unicast_key;
 730                 struct dentry *default_multicast_key;
 731                 struct dentry *default_mgmt_key;
 732         } debugfs;
 733 #endif
 734         /* must be last, dynamically sized area in this! */
 735         struct ieee80211_vif vif;
 736 };
 737
 738 static inline
 739 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 740 {
 741         return container_of(p, struct ieee80211_sub_if_data, vif);
 742 }
 743
 744 enum sdata_queue_type {
 745         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 746         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 747         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 748 };
 749
 750 enum {
 751         IEEE80211_RX_MSG        = 1,
 752         IEEE80211_TX_STATUS_MSG = 2,
 753         IEEE80211_EOSP_MSG      = 3,
 754 };
 755
 756 struct skb_eosp_msg_data {
 757         u8 sta[ETH_ALEN], iface[ETH_ALEN];
 758 };
 759
 760 enum queue_stop_reason {
 761         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 762         IEEE80211_QUEUE_STOP_REASON_PS,
 763         IEEE80211_QUEUE_STOP_REASON_CSA,
 764         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 765         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 766         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 767 };
 768
 769 #ifdef CONFIG_MAC80211_LEDS
 770 struct tpt_led_trigger {
 771         struct led_trigger trig;
 772         char name[32];
 773         const struct ieee80211_tpt_blink *blink_table;
 774         unsigned int blink_table_len;
 775         struct timer_list timer;
 776         unsigned long prev_traffic;
 777         unsigned long tx_bytes, rx_bytes;
 778         unsigned int active, want;
 779         bool running;
 780 };
 781 #endif
 782
 783 /**
 784  * mac80211 scan flags - currently active scan mode
 785  *
 786  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 787  *      well be on the operating channel
 788  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 789  *      determine if we are on the operating channel or not
 790  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
 791  *      channel. This should not interrupt normal traffic.
 792  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 793  *      that the scan completed.
 794  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 795  *      a scan complete for an aborted scan.
 796  */
 797 enum {
 798         SCAN_SW_SCANNING,
 799         SCAN_HW_SCANNING,
 800         SCAN_ONCHANNEL_SCANNING,
 801         SCAN_COMPLETED,
 802         SCAN_ABORTED,
 803 };
 804
 805 /**
 806  * enum mac80211_scan_state - scan state machine states
 807  *
 808  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 809  *      determines if we should keep on scanning or switch back to the
 810  *      operating channel
 811  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 812  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 813  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 814  *      send out data
 815  * @SCAN_RESUME: Resume the scan and scan the next channel
 816  */
 817 enum mac80211_scan_state {
 818         SCAN_DECISION,
 819         SCAN_SET_CHANNEL,
 820         SCAN_SEND_PROBE,
 821         SCAN_SUSPEND,
 822         SCAN_RESUME,
 823 };
 824
 825 struct ieee80211_local {
 826         /* embed the driver visible part.
 827          * don't cast (use the static inlines below), but we keep
 828          * it first anyway so they become a no-op */
 829         struct ieee80211_hw hw;
 830
 831         const struct ieee80211_ops *ops;
 832
 833         /*
 834          * private workqueue to mac80211. mac80211 makes this accessible
 835          * via ieee80211_queue_work()
 836          */
 837         struct workqueue_struct *workqueue;
 838
 839         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 840         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 841         spinlock_t queue_stop_reason_lock;
 842
 843         int open_count;
 844         int monitors, cooked_mntrs;
 845         /* number of interfaces with corresponding FIF_ flags */
 846         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 847             fif_probe_req;
 848         int probe_req_reg;
 849         unsigned int filter_flags; /* FIF_* */
 850
 851         bool wiphy_ciphers_allocated;
 852
 853         /* protects the aggregated multicast list and filter calls */
 854         spinlock_t filter_lock;
 855
 856         /* used for uploading changed mc list */
 857         struct work_struct reconfig_filter;
 858
 859         /* used to reconfigure hardware SM PS */
 860         struct work_struct recalc_smps;
 861
 862         /* aggregated multicast list */
 863         struct netdev_hw_addr_list mc_list;
 864
 865         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 866
 867         /*
 868          * suspended is true if we finished all the suspend _and_ we have
 869          * not yet come up from resume. This is to be used by mac80211
 870          * to ensure driver sanity during suspend and mac80211's own
 871          * sanity. It can eventually be used for WoW as well.
 872          */
 873         bool suspended;
 874
 875         /*
 876          * Resuming is true while suspended, but when we're reprogramming the
 877          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 878          * again even though some other parts of the stack are still suspended
 879          * and we still drop received frames to avoid waking the stack.
 880          */
 881         bool resuming;
 882
 883         /*
 884          * quiescing is true during the suspend process _only_ to
 885          * ease timer cancelling etc.
 886          */
 887         bool quiescing;
 888
 889         /* device is started */
 890         bool started;
 891
 892         /* device is during a HW reconfig */
 893         bool in_reconfig;
 894
 895         /* wowlan is enabled -- don't reconfig on resume */
 896         bool wowlan;
 897
 898         int tx_headroom; /* required headroom for hardware/radiotap */
 899
 900         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 901          * added to skb_queue will be processed, but frames in
 902          * skb_queue_unreliable may be dropped if the total length of these
 903          * queues increases over the limit. */
 904 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 905         struct tasklet_struct tasklet;
 906         struct sk_buff_head skb_queue;
 907         struct sk_buff_head skb_queue_unreliable;
 908
 909         /*
 910          * Internal FIFO queue which is shared between multiple rx path
 911          * stages. Its main task is to provide a serialization mechanism,
 912          * so all rx handlers can enjoy having exclusive access to their
 913          * private data structures.
 914          */
 915         struct sk_buff_head rx_skb_queue;
 916         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 917
 918         /* Station data */
 919         /*
 920          * The mutex only protects the list, hash table and
 921          * counter, reads are done with RCU.
 922          */
 923         struct mutex sta_mtx;
 924         spinlock_t tim_lock;
 925         unsigned long num_sta;
 926         struct list_head sta_list;
 927         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
 928         struct timer_list sta_cleanup;
 929         int sta_generation;
 930
 931         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 932         struct tasklet_struct tx_pending_tasklet;
 933
 934         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 935
 936         /* number of interfaces with corresponding IFF_ flags */
 937         atomic_t iff_allmultis, iff_promiscs;
 938
 939         struct rate_control_ref *rate_ctrl;
 940
 941         struct crypto_cipher *wep_tx_tfm;
 942         struct crypto_cipher *wep_rx_tfm;
 943         u32 wep_iv;
 944
 945         /* see iface.c */
 946         struct list_head interfaces;
 947         struct mutex iflist_mtx;
 948
 949         /*
 950          * Key mutex, protects sdata's key_list and sta_info's
 951          * key pointers (write access, they're RCU.)
 952          */
 953         struct mutex key_mtx;
 954
 955         /* mutex for scan and work locking */
 956         struct mutex mtx;
 957
 958         /* Scanning and BSS list */
 959         unsigned long scanning;
 960         struct cfg80211_ssid scan_ssid;
 961         struct cfg80211_scan_request *int_scan_req;
 962         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 963         struct ieee80211_channel *scan_channel;
 964         enum ieee80211_band hw_scan_band;
 965         int scan_channel_idx;
 966         int scan_ies_len;
 967
 968         struct ieee80211_sched_scan_ies sched_scan_ies;
 969         struct work_struct sched_scan_stopped_work;
 970         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
 971
 972         unsigned long leave_oper_channel_time;
 973         enum mac80211_scan_state next_scan_state;
 974         struct delayed_work scan_work;
 975         struct ieee80211_sub_if_data __rcu *scan_sdata;
 976         enum nl80211_channel_type _oper_channel_type;
 977         struct ieee80211_channel *oper_channel, *csa_channel;
 978
 979         /* Temporary remain-on-channel for off-channel operations */
 980         struct ieee80211_channel *tmp_channel;
 981         enum nl80211_channel_type tmp_channel_type;
 982
 983         /* SNMP counters */
 984         /* dot11CountersTable */
 985         u32 dot11TransmittedFragmentCount;
 986         u32 dot11MulticastTransmittedFrameCount;
 987         u32 dot11FailedCount;
 988         u32 dot11RetryCount;
 989         u32 dot11MultipleRetryCount;
 990         u32 dot11FrameDuplicateCount;
 991         u32 dot11ReceivedFragmentCount;
 992         u32 dot11MulticastReceivedFrameCount;
 993         u32 dot11TransmittedFrameCount;
 994
 995 #ifdef CONFIG_MAC80211_LEDS
 996         int tx_led_counter, rx_led_counter;
 997         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 998         struct tpt_led_trigger *tpt_led_trigger;
 999         char tx_led_name[32], rx_led_name[32],
1000              assoc_led_name[32], radio_led_name[32];
1001 #endif
1002
1003 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1004         /* TX/RX handler statistics */
1005         unsigned int tx_handlers_drop;
1006         unsigned int tx_handlers_queued;
1007         unsigned int tx_handlers_drop_unencrypted;
1008         unsigned int tx_handlers_drop_fragment;
1009         unsigned int tx_handlers_drop_wep;
1010         unsigned int tx_handlers_drop_not_assoc;
1011         unsigned int tx_handlers_drop_unauth_port;
1012         unsigned int rx_handlers_drop;
1013         unsigned int rx_handlers_queued;
1014         unsigned int rx_handlers_drop_nullfunc;
1015         unsigned int rx_handlers_drop_defrag;
1016         unsigned int rx_handlers_drop_short;
1017         unsigned int tx_expand_skb_head;
1018         unsigned int tx_expand_skb_head_cloned;
1019         unsigned int rx_expand_skb_head;
1020         unsigned int rx_expand_skb_head2;
1021         unsigned int rx_handlers_fragments;
1022         unsigned int tx_status_drop;
1023 #define I802_DEBUG_INC(c) (c)++
1024 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1025 #define I802_DEBUG_INC(c) do { } while (0)
1026 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1027
1028
1029         int total_ps_buffered; /* total number of all buffered unicast and
1030                                 * multicast packets for power saving stations
1031                                 */
1032
1033         bool pspolling;
1034         bool offchannel_ps_enabled;
1035         /*
1036          * PS can only be enabled when we have exactly one managed
1037          * interface (and monitors) in PS, this then points there.
1038          */
1039         struct ieee80211_sub_if_data *ps_sdata;
1040         struct work_struct dynamic_ps_enable_work;
1041         struct work_struct dynamic_ps_disable_work;
1042         struct timer_list dynamic_ps_timer;
1043         struct notifier_block network_latency_notifier;
1044         struct notifier_block ifa_notifier;
1045
1046         /*
1047          * The dynamic ps timeout configured from user space via WEXT -
1048          * this will override whatever chosen by mac80211 internally.
1049          */
1050         int dynamic_ps_forced_timeout;
1051         int dynamic_ps_user_timeout;
1052         bool disable_dynamic_ps;
1053
1054         int user_power_level; /* in dBm */
1055         int power_constr_level; /* in dBm */
1056
1057         enum ieee80211_smps_mode smps_mode;
1058
1059         struct work_struct restart_work;
1060
1061 #ifdef CONFIG_MAC80211_DEBUGFS
1062         struct local_debugfsdentries {
1063                 struct dentry *rcdir;
1064                 struct dentry *keys;
1065         } debugfs;
1066 #endif
1067
1068         /*
1069          * Remain-on-channel support
1070          */
1071         struct list_head roc_list;
1072         struct work_struct hw_roc_start, hw_roc_done;
1073         unsigned long hw_roc_start_time;
1074
1075         struct idr ack_status_frames;
1076         spinlock_t ack_status_lock;
1077
1078         /* dummy netdev for use w/ NAPI */
1079         struct net_device napi_dev;
1080
1081         struct napi_struct napi;
1082
1083         /* virtual monitor interface */
1084         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1085 };
1086
1087 static inline struct ieee80211_sub_if_data *
1088 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1089 {
1090         return netdev_priv(dev);
1091 }
1092
1093 static inline struct ieee80211_sub_if_data *
1094 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1095 {
1096         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1097 }
1098
1099 /* this struct represents 802.11n's RA/TID combination */
1100 struct ieee80211_ra_tid {
1101         u8 ra[ETH_ALEN];
1102         u16 tid;
1103 };
1104
1105 /* Parsed Information Elements */
1106 struct ieee802_11_elems {
1107         u8 *ie_start;
1108         size_t total_len;
1109
1110         /* pointers to IEs */
1111         u8 *ssid;
1112         u8 *supp_rates;
1113         u8 *fh_params;
1114         u8 *ds_params;
1115         u8 *cf_params;
1116         struct ieee80211_tim_ie *tim;
1117         u8 *ibss_params;
1118         u8 *challenge;
1119         u8 *wpa;
1120         u8 *rsn;
1121         u8 *erp_info;
1122         u8 *ext_supp_rates;
1123         u8 *wmm_info;
1124         u8 *wmm_param;
1125         struct ieee80211_ht_cap *ht_cap_elem;
1126         struct ieee80211_ht_operation *ht_operation;
1127         struct ieee80211_meshconf_ie *mesh_config;
1128         u8 *mesh_id;
1129         u8 *peering;
1130         u8 *preq;
1131         u8 *prep;
1132         u8 *perr;
1133         struct ieee80211_rann_ie *rann;
1134         u8 *ch_switch_elem;
1135         u8 *country_elem;
1136         u8 *pwr_constr_elem;
1137         u8 *quiet_elem; /* first quite element */
1138         u8 *timeout_int;
1139
1140         /* length of them, respectively */
1141         u8 ssid_len;
1142         u8 supp_rates_len;
1143         u8 fh_params_len;
1144         u8 ds_params_len;
1145         u8 cf_params_len;
1146         u8 tim_len;
1147         u8 ibss_params_len;
1148         u8 challenge_len;
1149         u8 wpa_len;
1150         u8 rsn_len;
1151         u8 erp_info_len;
1152         u8 ext_supp_rates_len;
1153         u8 wmm_info_len;
1154         u8 wmm_param_len;
1155         u8 mesh_id_len;
1156         u8 peering_len;
1157         u8 preq_len;
1158         u8 prep_len;
1159         u8 perr_len;
1160         u8 ch_switch_elem_len;
1161         u8 country_elem_len;
1162         u8 pwr_constr_elem_len;
1163         u8 quiet_elem_len;
1164         u8 num_of_quiet_elem;   /* can be more the one */
1165         u8 timeout_int_len;
1166
1167         /* whether a parse error occurred while retrieving these elements */
1168         bool parse_error;
1169 };
1170
1171 static inline struct ieee80211_local *hw_to_local(
1172         struct ieee80211_hw *hw)
1173 {
1174         return container_of(hw, struct ieee80211_local, hw);
1175 }
1176
1177
1178 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1179 {
1180         return ether_addr_equal(raddr, addr) ||
1181                is_broadcast_ether_addr(raddr);
1182 }
1183
1184
1185 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1186 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1187 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1188                                       u32 changed);
1189 void ieee80211_configure_filter(struct ieee80211_local *local);
1190 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1191
1192 /* STA code */
1193 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1194 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1195                        struct cfg80211_auth_request *req);
1196 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1197                         struct cfg80211_assoc_request *req);
1198 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1199                          struct cfg80211_deauth_request *req);
1200 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1201                            struct cfg80211_disassoc_request *req);
1202 void ieee80211_send_pspoll(struct ieee80211_local *local,
1203                            struct ieee80211_sub_if_data *sdata);
1204 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1205 int ieee80211_max_network_latency(struct notifier_block *nb,
1206                                   unsigned long data, void *dummy);
1207 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1208 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1209                                       struct ieee80211_channel_sw_ie *sw_elem,
1210                                       struct ieee80211_bss *bss,
1211                                       u64 timestamp);
1212 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1213 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1214 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1215 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1216                                   struct sk_buff *skb);
1217 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1218 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1219 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1220
1221 /* IBSS code */
1222 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1223 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1224 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1225                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1226 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1227                         struct cfg80211_ibss_params *params);
1228 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1229 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1230 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1231 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1232 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1233                                    struct sk_buff *skb);
1234
1235 /* mesh code */
1236 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1237 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1238                                    struct sk_buff *skb);
1239
1240 /* scan/BSS handling */
1241 void ieee80211_scan_work(struct work_struct *work);
1242 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1243                                     const u8 *ssid, u8 ssid_len,
1244                                     struct ieee80211_channel *chan);
1245 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1246                            struct cfg80211_scan_request *req);
1247 void ieee80211_scan_cancel(struct ieee80211_local *local);
1248 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1249 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1250
1251 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1252 struct ieee80211_bss *
1253 ieee80211_bss_info_update(struct ieee80211_local *local,
1254                           struct ieee80211_rx_status *rx_status,
1255                           struct ieee80211_mgmt *mgmt,
1256                           size_t len,
1257                           struct ieee802_11_elems *elems,
1258                           struct ieee80211_channel *channel,
1259                           bool beacon);
1260 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1261                           struct ieee80211_bss *bss);
1262
1263 /* scheduled scan handling */
1264 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1265                                        struct cfg80211_sched_scan_request *req);
1266 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1267 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1268
1269 /* off-channel helpers */
1270 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1271                                     bool offchannel_ps_enable);
1272 void ieee80211_offchannel_return(struct ieee80211_local *local,
1273                                  bool offchannel_ps_disable);
1274 void ieee80211_roc_setup(struct ieee80211_local *local);
1275 void ieee80211_start_next_roc(struct ieee80211_local *local);
1276 void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata);
1277 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc);
1278 void ieee80211_sw_roc_work(struct work_struct *work);
1279 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1280
1281 /* interface handling */
1282 int ieee80211_iface_init(void);
1283 void ieee80211_iface_exit(void);
1284 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1285                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1286                      struct vif_params *params);
1287 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1288                              enum nl80211_iftype type);
1289 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1290 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1291 void ieee80211_recalc_idle(struct ieee80211_local *local);
1292 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1293                                     const int offset);
1294
1295 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1296 {
1297         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1298 }
1299
1300 /* tx handling */
1301 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1302 void ieee80211_tx_pending(unsigned long data);
1303 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1304                                          struct net_device *dev);
1305 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1306                                        struct net_device *dev);
1307
1308 /* HT */
1309 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1310                                      struct ieee80211_sta_ht_cap *ht_cap);
1311 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1312                                        struct ieee80211_supported_band *sband,
1313                                        struct ieee80211_ht_cap *ht_cap_ie,
1314                                        struct ieee80211_sta_ht_cap *ht_cap);
1315 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1316                           const u8 *da, u16 tid,
1317                           u16 initiator, u16 reason_code);
1318 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1319                                enum ieee80211_smps_mode smps, const u8 *da,
1320                                const u8 *bssid);
1321 void ieee80211_request_smps_work(struct work_struct *work);
1322
1323 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1324                                      u16 initiator, u16 reason, bool stop);
1325 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1326                                     u16 initiator, u16 reason, bool stop);
1327 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1328 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1329                              struct sta_info *sta,
1330                              struct ieee80211_mgmt *mgmt, size_t len);
1331 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1332                                   struct sta_info *sta,
1333                                   struct ieee80211_mgmt *mgmt,
1334                                   size_t len);
1335 void ieee80211_process_addba_request(struct ieee80211_local *local,
1336                                      struct sta_info *sta,
1337                                      struct ieee80211_mgmt *mgmt,
1338                                      size_t len);
1339
1340 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1341                                    enum ieee80211_back_parties initiator,
1342                                    bool tx);
1343 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1344                                     enum ieee80211_back_parties initiator,
1345                                     bool tx);
1346 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1347 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1348 void ieee80211_ba_session_work(struct work_struct *work);
1349 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1350 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1351
1352 /* Spectrum management */
1353 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1354                                        struct ieee80211_mgmt *mgmt,
1355                                        size_t len);
1356
1357 /* Suspend/resume and hw reconfiguration */
1358 int ieee80211_reconfig(struct ieee80211_local *local);
1359 void ieee80211_stop_device(struct ieee80211_local *local);
1360
1361 #ifdef CONFIG_PM
1362 int __ieee80211_suspend(struct ieee80211_hw *hw,
1363                         struct cfg80211_wowlan *wowlan);
1364
1365 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1366 {
1367         struct ieee80211_local *local = hw_to_local(hw);
1368
1369         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1370                 "%s: resume with hardware scan still in progress\n",
1371                 wiphy_name(hw->wiphy));
1372
1373         return ieee80211_reconfig(hw_to_local(hw));
1374 }
1375 #else
1376 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1377                                       struct cfg80211_wowlan *wowlan)
1378 {
1379         return 0;
1380 }
1381
1382 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1383 {
1384         return 0;
1385 }
1386 #endif
1387
1388 /* utility functions/constants */
1389 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1390 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1391                         enum nl80211_iftype type);
1392 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1393                              int rate, int erp, int short_preamble);
1394 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1395                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1396                                      gfp_t gfp);
1397 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1398                                bool bss_notify);
1399 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1400
1401 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1402                           struct sk_buff *skb, int tid);
1403 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1404                                     struct sk_buff *skb)
1405 {
1406         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1407         ieee80211_tx_skb_tid(sdata, skb, 7);
1408 }
1409
1410 void ieee802_11_parse_elems(u8 *start, size_t len,
1411                             struct ieee802_11_elems *elems);
1412 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1413                                struct ieee802_11_elems *elems,
1414                                u64 filter, u32 crc);
1415 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1416                               enum ieee80211_band band);
1417
1418 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1419 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1420 void ieee80211_dynamic_ps_timer(unsigned long data);
1421 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1422                              struct ieee80211_sub_if_data *sdata,
1423                              int powersave);
1424 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1425                              struct ieee80211_hdr *hdr);
1426 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1427                              struct ieee80211_hdr *hdr, bool ack);
1428 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1429
1430 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1431                                      enum queue_stop_reason reason);
1432 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1433                                      enum queue_stop_reason reason);
1434 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1435                                     enum queue_stop_reason reason);
1436 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1437                                     enum queue_stop_reason reason);
1438 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1439 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1440                                struct sk_buff *skb);
1441 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1442                                    struct sk_buff_head *skbs,
1443                                    void (*fn)(void *data), void *data);
1444 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1445                                               struct sk_buff_head *skbs)
1446 {
1447         ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1448 }
1449
1450 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1451                          u16 transaction, u16 auth_alg,
1452                          u8 *extra, size_t extra_len, const u8 *bssid,
1453                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
1454 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1455                              const u8 *ie, size_t ie_len,
1456                              enum ieee80211_band band, u32 rate_mask,
1457                              u8 channel);
1458 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1459                                           u8 *dst, u32 ratemask,
1460                                           const u8 *ssid, size_t ssid_len,
1461                                           const u8 *ie, size_t ie_len,
1462                                           bool directed);
1463 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1464                               const u8 *ssid, size_t ssid_len,
1465                               const u8 *ie, size_t ie_len,
1466                               u32 ratemask, bool directed, bool no_cck);
1467
1468 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1469                                   const size_t supp_rates_len,
1470                                   const u8 *supp_rates);
1471 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1472                             struct ieee802_11_elems *elems,
1473                             enum ieee80211_band band, u32 *basic_rates);
1474 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1475                              enum ieee80211_smps_mode smps_mode);
1476 void ieee80211_recalc_smps(struct ieee80211_local *local);
1477
1478 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1479                           const u8 *ids, int n_ids, size_t offset);
1480 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1481 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1482                               u16 cap);
1483 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1484                                struct ieee80211_channel *channel,
1485                                enum nl80211_channel_type channel_type,
1486                                u16 prot_mode);
1487 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1488                                u32 cap);
1489 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1490                             struct sk_buff *skb, bool need_basic);
1491 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1492                                 struct sk_buff *skb, bool need_basic);
1493
1494 /* channel management */
1495 enum ieee80211_chan_mode {
1496         CHAN_MODE_UNDEFINED,
1497         CHAN_MODE_HOPPING,
1498         CHAN_MODE_FIXED,
1499 };
1500
1501 enum ieee80211_chan_mode
1502 ieee80211_get_channel_mode(struct ieee80211_local *local,
1503                            struct ieee80211_sub_if_data *ignore);
1504 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1505                                 struct ieee80211_sub_if_data *sdata,
1506                                 enum nl80211_channel_type chantype);
1507 enum nl80211_channel_type
1508 ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper);
1509
1510 #ifdef CONFIG_MAC80211_NOINLINE
1511 #define debug_noinline noinline
1512 #else
1513 #define debug_noinline
1514 #endif
1515
1516 #endif /* IEEE80211_I_H */