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
  34 struct ieee80211_local;
  35
  36 /* Maximum number of broadcast/multicast frames to buffer when some of the
  37  * associated stations are using power saving. */
  38 #define AP_MAX_BC_BUFFER 128
  39
  40 /* Maximum number of frames buffered to all STAs, including multicast frames.
  41  * Note: increasing this limit increases the potential memory requirement. Each
  42  * frame can be up to about 2 kB long. */
  43 #define TOTAL_MAX_TX_BUFFER 512
  44
  45 /* Required encryption head and tailroom */
  46 #define IEEE80211_ENCRYPT_HEADROOM 8
  47 #define IEEE80211_ENCRYPT_TAILROOM 18
  48
  49 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  50  * reception of at least three fragmented frames. This limit can be increased
  51  * by changing this define, at the cost of slower frame reassembly and
  52  * increased memory use (about 2 kB of RAM per entry). */
  53 #define IEEE80211_FRAGMENT_MAX 4
  54
  55 #define TU_TO_EXP_TIME(x)       (jiffies + usecs_to_jiffies((x) * 1024))
  56
  57 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  58         (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK |   \
  59          IEEE80211_WMM_IE_STA_QOSINFO_AC_BE |   \
  60          IEEE80211_WMM_IE_STA_QOSINFO_AC_VI |   \
  61          IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
  62
  63 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  64         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  65
  66 struct ieee80211_fragment_entry {
  67         unsigned long first_frag_time;
  68         unsigned int seq;
  69         unsigned int rx_queue;
  70         unsigned int last_frag;
  71         unsigned int extra_len;
  72         struct sk_buff_head skb_list;
  73         int ccmp; /* Whether fragments were encrypted with CCMP */
  74         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  75 };
  76
  77
  78 struct ieee80211_bss {
  79         /* don't want to look up all the time */
  80         size_t ssid_len;
  81         u8 ssid[IEEE80211_MAX_SSID_LEN];
  82
  83         u8 dtim_period;
  84
  85         bool wmm_used;
  86         bool uapsd_supported;
  87
  88         unsigned long last_probe_resp;
  89
  90 #ifdef CONFIG_MAC80211_MESH
  91         u8 *mesh_id;
  92         size_t mesh_id_len;
  93         u8 *mesh_cfg;
  94 #endif
  95
  96 #define IEEE80211_MAX_SUPP_RATES 32
  97         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  98         size_t supp_rates_len;
  99
 100         /*
 101          * During association, we save an ERP value from a probe response so
 102          * that we can feed ERP info to the driver when handling the
 103          * association completes. these fields probably won't be up-to-date
 104          * otherwise, you probably don't want to use them.
 105          */
 106         bool has_erp_value;
 107         u8 erp_value;
 108
 109         /* Keep track of the corruption of the last beacon/probe response. */
 110         u8 corrupt_data;
 111
 112         /* Keep track of what bits of information we have valid info for. */
 113         u8 valid_data;
 114 };
 115
 116 /**
 117  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 118  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 119  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 120  *
 121  * These are bss flags that are attached to a bss in the
 122  * @corrupt_data field of &struct ieee80211_bss.
 123  */
 124 enum ieee80211_bss_corrupt_data_flags {
 125         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 126         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 127 };
 128
 129 /**
 130  * enum ieee80211_valid_data_flags - BSS valid data flags
 131  * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE
 132  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 133  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 134  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 135  *
 136  * These are bss flags that are attached to a bss in the
 137  * @valid_data field of &struct ieee80211_bss.  They show which parts
 138  * of the data structure were recieved as a result of an un-corrupted
 139  * beacon/probe response.
 140  */
 141 enum ieee80211_bss_valid_data_flags {
 142         IEEE80211_BSS_VALID_DTIM                = BIT(0),
 143         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 144         IEEE80211_BSS_VALID_RATES               = BIT(2),
 145         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 146 };
 147
 148 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 149 {
 150 #ifdef CONFIG_MAC80211_MESH
 151         return bss->mesh_cfg;
 152 #endif
 153         return NULL;
 154 }
 155
 156 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 157 {
 158 #ifdef CONFIG_MAC80211_MESH
 159         return bss->mesh_id;
 160 #endif
 161         return NULL;
 162 }
 163
 164 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 165 {
 166 #ifdef CONFIG_MAC80211_MESH
 167         return bss->mesh_id_len;
 168 #endif
 169         return 0;
 170 }
 171
 172
 173 typedef unsigned __bitwise__ ieee80211_tx_result;
 174 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 175 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 176 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 177
 178 #define IEEE80211_TX_UNICAST            BIT(1)
 179 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 180
 181 struct ieee80211_tx_data {
 182         struct sk_buff *skb;
 183         struct sk_buff_head skbs;
 184         struct ieee80211_local *local;
 185         struct ieee80211_sub_if_data *sdata;
 186         struct sta_info *sta;
 187         struct ieee80211_key *key;
 188
 189         struct ieee80211_channel *channel;
 190
 191         unsigned int flags;
 192 };
 193
 194
 195 typedef unsigned __bitwise__ ieee80211_rx_result;
 196 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 197 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 198 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 199 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 200
 201 /**
 202  * enum ieee80211_packet_rx_flags - packet RX flags
 203  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 204  *      (incl. multicast frames)
 205  * @IEEE80211_RX_IN_SCAN: received while scanning
 206  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 207  * @IEEE80211_RX_AMSDU: a-MSDU packet
 208  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 209  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 210  *
 211  * These are per-frame flags that are attached to a frame in the
 212  * @rx_flags field of &struct ieee80211_rx_status.
 213  */
 214 enum ieee80211_packet_rx_flags {
 215         IEEE80211_RX_IN_SCAN                    = BIT(0),
 216         IEEE80211_RX_RA_MATCH                   = BIT(1),
 217         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 218         IEEE80211_RX_AMSDU                      = BIT(3),
 219         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 220         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 221 };
 222
 223 /**
 224  * enum ieee80211_rx_flags - RX data flags
 225  *
 226  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 227  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 228  *      to cfg80211_report_obss_beacon().
 229  *
 230  * These flags are used across handling multiple interfaces
 231  * for a single frame.
 232  */
 233 enum ieee80211_rx_flags {
 234         IEEE80211_RX_CMNTR              = BIT(0),
 235         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 236 };
 237
 238 struct ieee80211_rx_data {
 239         struct sk_buff *skb;
 240         struct ieee80211_local *local;
 241         struct ieee80211_sub_if_data *sdata;
 242         struct sta_info *sta;
 243         struct ieee80211_key *key;
 244
 245         unsigned int flags;
 246
 247         /*
 248          * Index into sequence numbers array, 0..16
 249          * since the last (16) is used for non-QoS,
 250          * will be 16 on non-QoS frames.
 251          */
 252         int seqno_idx;
 253
 254         /*
 255          * Index into the security IV/PN arrays, 0..16
 256          * since the last (16) is used for CCMP-encrypted
 257          * management frames, will be set to 16 on mgmt
 258          * frames and 0 on non-QoS frames.
 259          */
 260         int security_idx;
 261
 262         u32 tkip_iv32;
 263         u16 tkip_iv16;
 264 };
 265
 266 struct beacon_data {
 267         u8 *head, *tail;
 268         int head_len, tail_len;
 269         struct rcu_head rcu_head;
 270 };
 271
 272 struct ieee80211_if_ap {
 273         struct beacon_data __rcu *beacon;
 274         struct sk_buff __rcu *probe_resp;
 275
 276         struct list_head vlans;
 277
 278         /* yes, this looks ugly, but guarantees that we can later use
 279          * bitmap_empty :)
 280          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 281         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 282         struct sk_buff_head ps_bc_buf;
 283         atomic_t num_sta_ps; /* number of stations in PS mode */
 284         atomic_t num_sta_authorized; /* number of authorized stations */
 285         int dtim_count;
 286         bool dtim_bc_mc;
 287 };
 288
 289 struct ieee80211_if_wds {
 290         struct sta_info *sta;
 291         u8 remote_addr[ETH_ALEN];
 292 };
 293
 294 struct ieee80211_if_vlan {
 295         struct list_head list;
 296
 297         /* used for all tx if the VLAN is configured to 4-addr mode */
 298         struct sta_info __rcu *sta;
 299 };
 300
 301 struct mesh_stats {
 302         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 303         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 304         __u32 fwded_frames;             /* Mesh total forwarded frames */
 305         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 306         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 307         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 308         atomic_t estab_plinks;
 309 };
 310
 311 #define PREQ_Q_F_START          0x1
 312 #define PREQ_Q_F_REFRESH        0x2
 313 struct mesh_preq_queue {
 314         struct list_head list;
 315         u8 dst[ETH_ALEN];
 316         u8 flags;
 317 };
 318
 319 enum ieee80211_work_type {
 320         IEEE80211_WORK_ABORT,
 321         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 322         IEEE80211_WORK_OFFCHANNEL_TX,
 323 };
 324
 325 /**
 326  * enum work_done_result - indicates what to do after work was done
 327  *
 328  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 329  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 330  *      should be requeued.
 331  */
 332 enum work_done_result {
 333         WORK_DONE_DESTROY,
 334         WORK_DONE_REQUEUE,
 335 };
 336
 337 struct ieee80211_work {
 338         struct list_head list;
 339
 340         struct rcu_head rcu_head;
 341
 342         struct ieee80211_sub_if_data *sdata;
 343
 344         enum work_done_result (*done)(struct ieee80211_work *wk,
 345                                       struct sk_buff *skb);
 346
 347         struct ieee80211_channel *chan;
 348         enum nl80211_channel_type chan_type;
 349
 350         unsigned long timeout;
 351         enum ieee80211_work_type type;
 352
 353         bool started;
 354
 355         union {
 356                 struct {
 357                         u32 duration;
 358                 } remain;
 359                 struct {
 360                         struct sk_buff *frame;
 361                         u32 wait;
 362                         bool status;
 363                 } offchan_tx;
 364         };
 365
 366         size_t data_len;
 367         u8 data[];
 368 };
 369
 370 /* flags used in struct ieee80211_if_managed.flags */
 371 enum ieee80211_sta_flags {
 372         IEEE80211_STA_BEACON_POLL       = BIT(0),
 373         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 374         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 375         IEEE80211_STA_DISABLE_11N       = BIT(4),
 376         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 377         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 378         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 379         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 380         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 381 };
 382
 383 struct ieee80211_mgd_auth_data {
 384         struct cfg80211_bss *bss;
 385         unsigned long timeout;
 386         int tries;
 387         u16 algorithm, expected_transaction;
 388
 389         u8 key[WLAN_KEY_LEN_WEP104];
 390         u8 key_len, key_idx;
 391         bool done;
 392
 393         size_t ie_len;
 394         u8 ie[];
 395 };
 396
 397 struct ieee80211_mgd_assoc_data {
 398         struct cfg80211_bss *bss;
 399         const u8 *supp_rates;
 400         const u8 *ht_information_ie;
 401
 402         unsigned long timeout;
 403         int tries;
 404
 405         u16 capability;
 406         u8 prev_bssid[ETH_ALEN];
 407         u8 ssid[IEEE80211_MAX_SSID_LEN];
 408         u8 ssid_len;
 409         u8 supp_rates_len;
 410         bool wmm, uapsd;
 411         bool have_beacon;
 412         bool sent_assoc;
 413         bool synced;
 414
 415         size_t ie_len;
 416         u8 ie[];
 417 };
 418
 419 struct ieee80211_if_managed {
 420         struct timer_list timer;
 421         struct timer_list conn_mon_timer;
 422         struct timer_list bcn_mon_timer;
 423         struct timer_list chswitch_timer;
 424         struct work_struct monitor_work;
 425         struct work_struct chswitch_work;
 426         struct work_struct beacon_connection_loss_work;
 427
 428         unsigned long beacon_timeout;
 429         unsigned long probe_timeout;
 430         int probe_send_count;
 431         bool nullfunc_failed;
 432
 433         struct mutex mtx;
 434         struct cfg80211_bss *associated;
 435         struct ieee80211_mgd_auth_data *auth_data;
 436         struct ieee80211_mgd_assoc_data *assoc_data;
 437
 438         u8 bssid[ETH_ALEN];
 439
 440         u16 aid;
 441
 442         unsigned long timers_running; /* used for quiesce/restart */
 443         bool powersave; /* powersave requested for this iface */
 444         bool broken_ap; /* AP is broken -- turn off powersave */
 445         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 446                                  ap_smps, /* smps mode AP thinks we're in */
 447                                  driver_smps_mode; /* smps mode request */
 448
 449         struct work_struct request_smps_work;
 450
 451         unsigned int flags;
 452
 453         bool beacon_crc_valid;
 454         u32 beacon_crc;
 455
 456         enum {
 457                 IEEE80211_MFP_DISABLED,
 458                 IEEE80211_MFP_OPTIONAL,
 459                 IEEE80211_MFP_REQUIRED
 460         } mfp; /* management frame protection */
 461
 462         /*
 463          * Bitmask of enabled u-apsd queues,
 464          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 465          * to take effect.
 466          */
 467         unsigned int uapsd_queues;
 468
 469         /*
 470          * Maximum number of buffered frames AP can deliver during a
 471          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 472          * Needs a new association to take effect.
 473          */
 474         unsigned int uapsd_max_sp_len;
 475
 476         int wmm_last_param_set;
 477
 478         u8 use_4addr;
 479
 480         /* Signal strength from the last Beacon frame in the current BSS. */
 481         int last_beacon_signal;
 482
 483         /*
 484          * Weighted average of the signal strength from Beacon frames in the
 485          * current BSS. This is in units of 1/16 of the signal unit to maintain
 486          * accuracy and to speed up calculations, i.e., the value need to be
 487          * divided by 16 to get the actual value.
 488          */
 489         int ave_beacon_signal;
 490
 491         /*
 492          * Number of Beacon frames used in ave_beacon_signal. This can be used
 493          * to avoid generating less reliable cqm events that would be based
 494          * only on couple of received frames.
 495          */
 496         unsigned int count_beacon_signal;
 497
 498         /*
 499          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 500          * that triggered a cqm event. 0 indicates that no event has been
 501          * generated for the current association.
 502          */
 503         int last_cqm_event_signal;
 504
 505         /*
 506          * State variables for keeping track of RSSI of the AP currently
 507          * connected to and informing driver when RSSI has gone
 508          * below/above a certain threshold.
 509          */
 510         int rssi_min_thold, rssi_max_thold;
 511         int last_ave_beacon_signal;
 512
 513         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 514         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 515 };
 516
 517 struct ieee80211_if_ibss {
 518         struct timer_list timer;
 519
 520         struct mutex mtx;
 521
 522         unsigned long last_scan_completed;
 523
 524         u32 basic_rates;
 525
 526         bool timer_running;
 527
 528         bool fixed_bssid;
 529         bool fixed_channel;
 530         bool privacy;
 531
 532         bool control_port;
 533
 534         u8 bssid[ETH_ALEN] __aligned(2);
 535         u8 ssid[IEEE80211_MAX_SSID_LEN];
 536         u8 ssid_len, ie_len;
 537         u8 *ie;
 538         struct ieee80211_channel *channel;
 539         enum nl80211_channel_type channel_type;
 540
 541         unsigned long ibss_join_req;
 542         /* probe response/beacon for IBSS */
 543         struct sk_buff __rcu *presp;
 544         struct sk_buff *skb;
 545
 546         spinlock_t incomplete_lock;
 547         struct list_head incomplete_stations;
 548
 549         enum {
 550                 IEEE80211_IBSS_MLME_SEARCH,
 551                 IEEE80211_IBSS_MLME_JOINED,
 552         } state;
 553 };
 554
 555 struct ieee80211_if_mesh {
 556         struct timer_list housekeeping_timer;
 557         struct timer_list mesh_path_timer;
 558         struct timer_list mesh_path_root_timer;
 559
 560         unsigned long timers_running;
 561
 562         unsigned long wrkq_flags;
 563
 564         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 565         size_t mesh_id_len;
 566         /* Active Path Selection Protocol Identifier */
 567         u8 mesh_pp_id;
 568         /* Active Path Selection Metric Identifier */
 569         u8 mesh_pm_id;
 570         /* Congestion Control Mode Identifier */
 571         u8 mesh_cc_id;
 572         /* Synchronization Protocol Identifier */
 573         u8 mesh_sp_id;
 574         /* Authentication Protocol Identifier */
 575         u8 mesh_auth_id;
 576         /* Local mesh Sequence Number */
 577         u32 sn;
 578         /* Last used PREQ ID */
 579         u32 preq_id;
 580         atomic_t mpaths;
 581         /* Timestamp of last SN update */
 582         unsigned long last_sn_update;
 583         /* Time when it's ok to send next PERR */
 584         unsigned long next_perr;
 585         /* Timestamp of last PREQ sent */
 586         unsigned long last_preq;
 587         struct mesh_rmc *rmc;
 588         spinlock_t mesh_preq_queue_lock;
 589         struct mesh_preq_queue preq_queue;
 590         int preq_queue_len;
 591         struct mesh_stats mshstats;
 592         struct mesh_config mshcfg;
 593         u32 mesh_seqnum;
 594         bool accepting_plinks;
 595         int num_gates;
 596         const u8 *ie;
 597         u8 ie_len;
 598         enum {
 599                 IEEE80211_MESH_SEC_NONE = 0x0,
 600                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 601                 IEEE80211_MESH_SEC_SECURED = 0x2,
 602         } security;
 603 };
 604
 605 #ifdef CONFIG_MAC80211_MESH
 606 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 607         do { (msh)->mshstats.name++; } while (0)
 608 #else
 609 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 610         do { } while (0)
 611 #endif
 612
 613 /**
 614  * enum ieee80211_sub_if_data_flags - virtual interface flags
 615  *
 616  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 617  * @IEEE80211_SDATA_PROMISC: interface is promisc
 618  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 619  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 620  *      associated stations and deliver multicast frames both
 621  *      back to wireless media and to the local net stack.
 622  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 623  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 624  */
 625 enum ieee80211_sub_if_data_flags {
 626         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 627         IEEE80211_SDATA_PROMISC                 = BIT(1),
 628         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 629         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 630         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 631         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 632 };
 633
 634 /**
 635  * enum ieee80211_sdata_state_bits - virtual interface state bits
 636  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 637  *      mirrors netif_running() but is separate for interface type
 638  *      change handling while the interface is up
 639  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 640  *      mode, so queues are stopped
 641  */
 642 enum ieee80211_sdata_state_bits {
 643         SDATA_STATE_RUNNING,
 644         SDATA_STATE_OFFCHANNEL,
 645 };
 646
 647 struct ieee80211_sub_if_data {
 648         struct list_head list;
 649
 650         struct wireless_dev wdev;
 651
 652         /* keys */
 653         struct list_head key_list;
 654
 655         /* count for keys needing tailroom space allocation */
 656         int crypto_tx_tailroom_needed_cnt;
 657
 658         struct net_device *dev;
 659         struct ieee80211_local *local;
 660
 661         unsigned int flags;
 662
 663         unsigned long state;
 664
 665         int drop_unencrypted;
 666
 667         char name[IFNAMSIZ];
 668
 669         /*
 670          * keep track of whether the HT opmode (stored in
 671          * vif.bss_info.ht_operation_mode) is valid.
 672          */
 673         bool ht_opmode_valid;
 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         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 686         struct ieee80211_key __rcu *default_unicast_key;
 687         struct ieee80211_key __rcu *default_multicast_key;
 688         struct ieee80211_key __rcu *default_mgmt_key;
 689
 690         u16 sequence_number;
 691         __be16 control_port_protocol;
 692         bool control_port_no_encrypt;
 693
 694         struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
 695
 696         struct work_struct work;
 697         struct sk_buff_head skb_queue;
 698
 699         bool arp_filter_state;
 700
 701         /*
 702          * AP this belongs to: self in AP mode and
 703          * corresponding AP in VLAN mode, NULL for
 704          * all others (might be needed later in IBSS)
 705          */
 706         struct ieee80211_if_ap *bss;
 707
 708         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 709         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 710         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 711
 712         union {
 713                 struct ieee80211_if_ap ap;
 714                 struct ieee80211_if_wds wds;
 715                 struct ieee80211_if_vlan vlan;
 716                 struct ieee80211_if_managed mgd;
 717                 struct ieee80211_if_ibss ibss;
 718                 struct ieee80211_if_mesh mesh;
 719                 u32 mntr_flags;
 720         } u;
 721
 722 #ifdef CONFIG_MAC80211_DEBUGFS
 723         struct {
 724                 struct dentry *dir;
 725                 struct dentry *subdir_stations;
 726                 struct dentry *default_unicast_key;
 727                 struct dentry *default_multicast_key;
 728                 struct dentry *default_mgmt_key;
 729         } debugfs;
 730 #endif
 731         /* must be last, dynamically sized area in this! */
 732         struct ieee80211_vif vif;
 733 };
 734
 735 static inline
 736 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 737 {
 738         return container_of(p, struct ieee80211_sub_if_data, vif);
 739 }
 740
 741 enum sdata_queue_type {
 742         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 743         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 744         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 745 };
 746
 747 enum {
 748         IEEE80211_RX_MSG        = 1,
 749         IEEE80211_TX_STATUS_MSG = 2,
 750         IEEE80211_EOSP_MSG      = 3,
 751 };
 752
 753 struct skb_eosp_msg_data {
 754         u8 sta[ETH_ALEN], iface[ETH_ALEN];
 755 };
 756
 757 enum queue_stop_reason {
 758         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 759         IEEE80211_QUEUE_STOP_REASON_PS,
 760         IEEE80211_QUEUE_STOP_REASON_CSA,
 761         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 762         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 763         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 764         IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE,
 765 };
 766
 767 #ifdef CONFIG_MAC80211_LEDS
 768 struct tpt_led_trigger {
 769         struct led_trigger trig;
 770         char name[32];
 771         const struct ieee80211_tpt_blink *blink_table;
 772         unsigned int blink_table_len;
 773         struct timer_list timer;
 774         unsigned long prev_traffic;
 775         unsigned long tx_bytes, rx_bytes;
 776         unsigned int active, want;
 777         bool running;
 778 };
 779 #endif
 780
 781 /**
 782  * mac80211 scan flags - currently active scan mode
 783  *
 784  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 785  *      well be on the operating channel
 786  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 787  *      determine if we are on the operating channel or not
 788  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 789  *      that the scan completed.
 790  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 791  *      a scan complete for an aborted scan.
 792  */
 793 enum {
 794         SCAN_SW_SCANNING,
 795         SCAN_HW_SCANNING,
 796         SCAN_COMPLETED,
 797         SCAN_ABORTED,
 798 };
 799
 800 /**
 801  * enum mac80211_scan_state - scan state machine states
 802  *
 803  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 804  *      determines if we should keep on scanning or switch back to the
 805  *      operating channel
 806  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 807  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 808  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 809  *      send out data
 810  * @SCAN_RESUME: Resume the scan and scan the next channel
 811  */
 812 enum mac80211_scan_state {
 813         SCAN_DECISION,
 814         SCAN_SET_CHANNEL,
 815         SCAN_SEND_PROBE,
 816         SCAN_SUSPEND,
 817         SCAN_RESUME,
 818 };
 819
 820 struct ieee80211_local {
 821         /* embed the driver visible part.
 822          * don't cast (use the static inlines below), but we keep
 823          * it first anyway so they become a no-op */
 824         struct ieee80211_hw hw;
 825
 826         const struct ieee80211_ops *ops;
 827
 828         /*
 829          * work stuff, potentially off-channel (in the future)
 830          */
 831         struct list_head work_list;
 832         struct timer_list work_timer;
 833         struct work_struct work_work;
 834
 835         /*
 836          * private workqueue to mac80211. mac80211 makes this accessible
 837          * via ieee80211_queue_work()
 838          */
 839         struct workqueue_struct *workqueue;
 840
 841         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 842         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 843         spinlock_t queue_stop_reason_lock;
 844
 845         int open_count;
 846         int monitors, cooked_mntrs;
 847         /* number of interfaces with corresponding FIF_ flags */
 848         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 849             fif_probe_req;
 850         int probe_req_reg;
 851         unsigned int filter_flags; /* FIF_* */
 852
 853         bool wiphy_ciphers_allocated;
 854
 855         /* protects the aggregated multicast list and filter calls */
 856         spinlock_t filter_lock;
 857
 858         /* used for uploading changed mc list */
 859         struct work_struct reconfig_filter;
 860
 861         /* used to reconfigure hardware SM PS */
 862         struct work_struct recalc_smps;
 863
 864         /* aggregated multicast list */
 865         struct netdev_hw_addr_list mc_list;
 866
 867         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 868
 869         /*
 870          * suspended is true if we finished all the suspend _and_ we have
 871          * not yet come up from resume. This is to be used by mac80211
 872          * to ensure driver sanity during suspend and mac80211's own
 873          * sanity. It can eventually be used for WoW as well.
 874          */
 875         bool suspended;
 876
 877         /*
 878          * Resuming is true while suspended, but when we're reprogramming the
 879          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 880          * again even though some other parts of the stack are still suspended
 881          * and we still drop received frames to avoid waking the stack.
 882          */
 883         bool resuming;
 884
 885         /*
 886          * quiescing is true during the suspend process _only_ to
 887          * ease timer cancelling etc.
 888          */
 889         bool quiescing;
 890
 891         /* device is started */
 892         bool started;
 893
 894         /* wowlan is enabled -- don't reconfig on resume */
 895         bool wowlan;
 896
 897         int tx_headroom; /* required headroom for hardware/radiotap */
 898
 899         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 900          * added to skb_queue will be processed, but frames in
 901          * skb_queue_unreliable may be dropped if the total length of these
 902          * queues increases over the limit. */
 903 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 904         struct tasklet_struct tasklet;
 905         struct sk_buff_head skb_queue;
 906         struct sk_buff_head skb_queue_unreliable;
 907
 908         /*
 909          * Internal FIFO queue which is shared between multiple rx path
 910          * stages. Its main task is to provide a serialization mechanism,
 911          * so all rx handlers can enjoy having exclusive access to their
 912          * private data structures.
 913          */
 914         struct sk_buff_head rx_skb_queue;
 915         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 916
 917         /* Station data */
 918         /*
 919          * The mutex only protects the list, hash table and
 920          * counter, reads are done with RCU.
 921          */
 922         struct mutex sta_mtx;
 923         spinlock_t tim_lock;
 924         unsigned long num_sta;
 925         struct list_head sta_list;
 926         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
 927         struct timer_list sta_cleanup;
 928         int sta_generation;
 929
 930         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 931         struct tasklet_struct tx_pending_tasklet;
 932
 933         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 934
 935         /* number of interfaces with corresponding IFF_ flags */
 936         atomic_t iff_allmultis, iff_promiscs;
 937
 938         struct rate_control_ref *rate_ctrl;
 939
 940         struct crypto_cipher *wep_tx_tfm;
 941         struct crypto_cipher *wep_rx_tfm;
 942         u32 wep_iv;
 943
 944         /* see iface.c */
 945         struct list_head interfaces;
 946         struct mutex iflist_mtx;
 947
 948         /*
 949          * Key mutex, protects sdata's key_list and sta_info's
 950          * key pointers (write access, they're RCU.)
 951          */
 952         struct mutex key_mtx;
 953
 954         /* mutex for scan and work locking */
 955         struct mutex mtx;
 956
 957         /* Scanning and BSS list */
 958         unsigned long scanning;
 959         struct cfg80211_ssid scan_ssid;
 960         struct cfg80211_scan_request *int_scan_req;
 961         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 962         struct ieee80211_channel *scan_channel;
 963         enum ieee80211_band hw_scan_band;
 964         int scan_channel_idx;
 965         int scan_ies_len;
 966
 967         bool sched_scanning;
 968         struct ieee80211_sched_scan_ies sched_scan_ies;
 969         struct work_struct sched_scan_stopped_work;
 970
 971         unsigned long leave_oper_channel_time;
 972         enum mac80211_scan_state next_scan_state;
 973         struct delayed_work scan_work;
 974         struct ieee80211_sub_if_data *scan_sdata;
 975         enum nl80211_channel_type _oper_channel_type;
 976         struct ieee80211_channel *oper_channel, *csa_channel;
 977
 978         /* Temporary remain-on-channel for off-channel operations */
 979         struct ieee80211_channel *tmp_channel;
 980         enum nl80211_channel_type tmp_channel_type;
 981
 982         /* SNMP counters */
 983         /* dot11CountersTable */
 984         u32 dot11TransmittedFragmentCount;
 985         u32 dot11MulticastTransmittedFrameCount;
 986         u32 dot11FailedCount;
 987         u32 dot11RetryCount;
 988         u32 dot11MultipleRetryCount;
 989         u32 dot11FrameDuplicateCount;
 990         u32 dot11ReceivedFragmentCount;
 991         u32 dot11MulticastReceivedFrameCount;
 992         u32 dot11TransmittedFrameCount;
 993
 994 #ifdef CONFIG_MAC80211_LEDS
 995         int tx_led_counter, rx_led_counter;
 996         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 997         struct tpt_led_trigger *tpt_led_trigger;
 998         char tx_led_name[32], rx_led_name[32],
 999              assoc_led_name[32], radio_led_name[32];
1000 #endif
1001
1002 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1003         /* TX/RX handler statistics */
1004         unsigned int tx_handlers_drop;
1005         unsigned int tx_handlers_queued;
1006         unsigned int tx_handlers_drop_unencrypted;
1007         unsigned int tx_handlers_drop_fragment;
1008         unsigned int tx_handlers_drop_wep;
1009         unsigned int tx_handlers_drop_not_assoc;
1010         unsigned int tx_handlers_drop_unauth_port;
1011         unsigned int rx_handlers_drop;
1012         unsigned int rx_handlers_queued;
1013         unsigned int rx_handlers_drop_nullfunc;
1014         unsigned int rx_handlers_drop_defrag;
1015         unsigned int rx_handlers_drop_short;
1016         unsigned int rx_handlers_drop_passive_scan;
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         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
1033
1034         bool pspolling;
1035         bool offchannel_ps_enabled;
1036         /*
1037          * PS can only be enabled when we have exactly one managed
1038          * interface (and monitors) in PS, this then points there.
1039          */
1040         struct ieee80211_sub_if_data *ps_sdata;
1041         struct work_struct dynamic_ps_enable_work;
1042         struct work_struct dynamic_ps_disable_work;
1043         struct timer_list dynamic_ps_timer;
1044         struct notifier_block network_latency_notifier;
1045         struct notifier_block ifa_notifier;
1046
1047         /*
1048          * The dynamic ps timeout configured from user space via WEXT -
1049          * this will override whatever chosen by mac80211 internally.
1050          */
1051         int dynamic_ps_forced_timeout;
1052         int dynamic_ps_user_timeout;
1053         bool disable_dynamic_ps;
1054
1055         int user_power_level; /* in dBm */
1056         int power_constr_level; /* in dBm */
1057
1058         enum ieee80211_smps_mode smps_mode;
1059
1060         struct work_struct restart_work;
1061
1062 #ifdef CONFIG_MAC80211_DEBUGFS
1063         struct local_debugfsdentries {
1064                 struct dentry *rcdir;
1065                 struct dentry *keys;
1066         } debugfs;
1067 #endif
1068
1069         struct ieee80211_channel *hw_roc_channel;
1070         struct net_device *hw_roc_dev;
1071         struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
1072         struct work_struct hw_roc_start, hw_roc_done;
1073         enum nl80211_channel_type hw_roc_channel_type;
1074         unsigned int hw_roc_duration;
1075         u32 hw_roc_cookie;
1076         bool hw_roc_for_tx;
1077
1078         struct idr ack_status_frames;
1079         spinlock_t ack_status_lock;
1080
1081         /* dummy netdev for use w/ NAPI */
1082         struct net_device napi_dev;
1083
1084         struct napi_struct napi;
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 /* this struct represents 802.11n's RA/TID combination */
1094 struct ieee80211_ra_tid {
1095         u8 ra[ETH_ALEN];
1096         u16 tid;
1097 };
1098
1099 /* Parsed Information Elements */
1100 struct ieee802_11_elems {
1101         u8 *ie_start;
1102         size_t total_len;
1103
1104         /* pointers to IEs */
1105         u8 *ssid;
1106         u8 *supp_rates;
1107         u8 *fh_params;
1108         u8 *ds_params;
1109         u8 *cf_params;
1110         struct ieee80211_tim_ie *tim;
1111         u8 *ibss_params;
1112         u8 *challenge;
1113         u8 *wpa;
1114         u8 *rsn;
1115         u8 *erp_info;
1116         u8 *ext_supp_rates;
1117         u8 *wmm_info;
1118         u8 *wmm_param;
1119         struct ieee80211_ht_cap *ht_cap_elem;
1120         struct ieee80211_ht_info *ht_info_elem;
1121         struct ieee80211_meshconf_ie *mesh_config;
1122         u8 *mesh_id;
1123         u8 *peering;
1124         u8 *preq;
1125         u8 *prep;
1126         u8 *perr;
1127         struct ieee80211_rann_ie *rann;
1128         u8 *ch_switch_elem;
1129         u8 *country_elem;
1130         u8 *pwr_constr_elem;
1131         u8 *quiet_elem; /* first quite element */
1132         u8 *timeout_int;
1133
1134         /* length of them, respectively */
1135         u8 ssid_len;
1136         u8 supp_rates_len;
1137         u8 fh_params_len;
1138         u8 ds_params_len;
1139         u8 cf_params_len;
1140         u8 tim_len;
1141         u8 ibss_params_len;
1142         u8 challenge_len;
1143         u8 wpa_len;
1144         u8 rsn_len;
1145         u8 erp_info_len;
1146         u8 ext_supp_rates_len;
1147         u8 wmm_info_len;
1148         u8 wmm_param_len;
1149         u8 mesh_id_len;
1150         u8 peering_len;
1151         u8 preq_len;
1152         u8 prep_len;
1153         u8 perr_len;
1154         u8 ch_switch_elem_len;
1155         u8 country_elem_len;
1156         u8 pwr_constr_elem_len;
1157         u8 quiet_elem_len;
1158         u8 num_of_quiet_elem;   /* can be more the one */
1159         u8 timeout_int_len;
1160
1161         /* whether a parse error occurred while retrieving these elements */
1162         bool parse_error;
1163 };
1164
1165 static inline struct ieee80211_local *hw_to_local(
1166         struct ieee80211_hw *hw)
1167 {
1168         return container_of(hw, struct ieee80211_local, hw);
1169 }
1170
1171
1172 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1173 {
1174         return compare_ether_addr(raddr, addr) == 0 ||
1175                is_broadcast_ether_addr(raddr);
1176 }
1177
1178
1179 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1180 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1181 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1182                                       u32 changed);
1183 void ieee80211_configure_filter(struct ieee80211_local *local);
1184 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1185
1186 /* STA code */
1187 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1188 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1189                        struct cfg80211_auth_request *req);
1190 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1191                         struct cfg80211_assoc_request *req);
1192 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1193                          struct cfg80211_deauth_request *req);
1194 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1195                            struct cfg80211_disassoc_request *req);
1196 void ieee80211_send_pspoll(struct ieee80211_local *local,
1197                            struct ieee80211_sub_if_data *sdata);
1198 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1199 int ieee80211_max_network_latency(struct notifier_block *nb,
1200                                   unsigned long data, void *dummy);
1201 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1202 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1203                                       struct ieee80211_channel_sw_ie *sw_elem,
1204                                       struct ieee80211_bss *bss,
1205                                       u64 timestamp);
1206 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1207 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1208 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1209 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1210                                   struct sk_buff *skb);
1211 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1212 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1213 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1214
1215 /* IBSS code */
1216 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1217 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1218 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1219                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1220 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1221                         struct cfg80211_ibss_params *params);
1222 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1223 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1224 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1225 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1226 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1227                                    struct sk_buff *skb);
1228
1229 /* mesh code */
1230 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1231 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1232                                    struct sk_buff *skb);
1233
1234 /* scan/BSS handling */
1235 void ieee80211_scan_work(struct work_struct *work);
1236 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1237                                     const u8 *ssid, u8 ssid_len,
1238                                     struct ieee80211_channel *chan);
1239 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1240                            struct cfg80211_scan_request *req);
1241 void ieee80211_scan_cancel(struct ieee80211_local *local);
1242 ieee80211_rx_result
1243 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1244
1245 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1246 struct ieee80211_bss *
1247 ieee80211_bss_info_update(struct ieee80211_local *local,
1248                           struct ieee80211_rx_status *rx_status,
1249                           struct ieee80211_mgmt *mgmt,
1250                           size_t len,
1251                           struct ieee802_11_elems *elems,
1252                           struct ieee80211_channel *channel,
1253                           bool beacon);
1254 struct ieee80211_bss *
1255 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1256                      u8 *ssid, u8 ssid_len);
1257 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1258                           struct ieee80211_bss *bss);
1259
1260 /* scheduled scan handling */
1261 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1262                                        struct cfg80211_sched_scan_request *req);
1263 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1264 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1265
1266 /* off-channel helpers */
1267 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1268                                     bool offchannel_ps_enable);
1269 void ieee80211_offchannel_return(struct ieee80211_local *local,
1270                                  bool offchannel_ps_disable);
1271 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1272
1273 /* interface handling */
1274 int ieee80211_iface_init(void);
1275 void ieee80211_iface_exit(void);
1276 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1277                      struct net_device **new_dev, enum nl80211_iftype type,
1278                      struct vif_params *params);
1279 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1280                              enum nl80211_iftype type);
1281 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1282 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1283 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1284 void ieee80211_recalc_idle(struct ieee80211_local *local);
1285 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1286                                     const int offset);
1287
1288 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1289 {
1290         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1291 }
1292
1293 /* tx handling */
1294 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1295 void ieee80211_tx_pending(unsigned long data);
1296 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1297                                          struct net_device *dev);
1298 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1299                                        struct net_device *dev);
1300
1301 /* HT */
1302 bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata);
1303 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1304                                      struct ieee80211_sta_ht_cap *ht_cap);
1305 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1306                                        struct ieee80211_supported_band *sband,
1307                                        struct ieee80211_ht_cap *ht_cap_ie,
1308                                        struct ieee80211_sta_ht_cap *ht_cap);
1309 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1310                           const u8 *da, u16 tid,
1311                           u16 initiator, u16 reason_code);
1312 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1313                                enum ieee80211_smps_mode smps, const u8 *da,
1314                                const u8 *bssid);
1315 void ieee80211_request_smps_work(struct work_struct *work);
1316
1317 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1318                                      u16 initiator, u16 reason, bool stop);
1319 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1320                                     u16 initiator, u16 reason, bool stop);
1321 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1322 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1323                              struct sta_info *sta,
1324                              struct ieee80211_mgmt *mgmt, size_t len);
1325 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1326                                   struct sta_info *sta,
1327                                   struct ieee80211_mgmt *mgmt,
1328                                   size_t len);
1329 void ieee80211_process_addba_request(struct ieee80211_local *local,
1330                                      struct sta_info *sta,
1331                                      struct ieee80211_mgmt *mgmt,
1332                                      size_t len);
1333
1334 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1335                                    enum ieee80211_back_parties initiator,
1336                                    bool tx);
1337 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1338                                     enum ieee80211_back_parties initiator,
1339                                     bool tx);
1340 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1341 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1342 void ieee80211_ba_session_work(struct work_struct *work);
1343 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1344 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1345
1346 /* Spectrum management */
1347 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1348                                        struct ieee80211_mgmt *mgmt,
1349                                        size_t len);
1350
1351 /* Suspend/resume and hw reconfiguration */
1352 int ieee80211_reconfig(struct ieee80211_local *local);
1353 void ieee80211_stop_device(struct ieee80211_local *local);
1354
1355 #ifdef CONFIG_PM
1356 int __ieee80211_suspend(struct ieee80211_hw *hw,
1357                         struct cfg80211_wowlan *wowlan);
1358
1359 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1360 {
1361         struct ieee80211_local *local = hw_to_local(hw);
1362
1363         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1364                 "%s: resume with hardware scan still in progress\n",
1365                 wiphy_name(hw->wiphy));
1366
1367         return ieee80211_reconfig(hw_to_local(hw));
1368 }
1369 #else
1370 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1371                                       struct cfg80211_wowlan *wowlan)
1372 {
1373         return 0;
1374 }
1375
1376 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1377 {
1378         return 0;
1379 }
1380 #endif
1381
1382 /* utility functions/constants */
1383 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1384 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1385                         enum nl80211_iftype type);
1386 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1387                              int rate, int erp, int short_preamble);
1388 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1389                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1390                                      gfp_t gfp);
1391 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1392                                bool bss_notify);
1393 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1394
1395 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1396                           struct sk_buff *skb, int tid);
1397 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1398                                     struct sk_buff *skb)
1399 {
1400         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1401         ieee80211_tx_skb_tid(sdata, skb, 7);
1402 }
1403
1404 void ieee802_11_parse_elems(u8 *start, size_t len,
1405                             struct ieee802_11_elems *elems);
1406 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1407                                struct ieee802_11_elems *elems,
1408                                u64 filter, u32 crc);
1409 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1410                               enum ieee80211_band band);
1411
1412 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1413 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1414 void ieee80211_dynamic_ps_timer(unsigned long data);
1415 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1416                              struct ieee80211_sub_if_data *sdata,
1417                              int powersave);
1418 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1419                              struct ieee80211_hdr *hdr);
1420 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1421                              struct ieee80211_hdr *hdr, bool ack);
1422 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1423
1424 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1425                                      enum queue_stop_reason reason);
1426 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1427                                      enum queue_stop_reason reason);
1428 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1429                                     enum queue_stop_reason reason);
1430 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1431                                     enum queue_stop_reason reason);
1432 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1433                                struct sk_buff *skb);
1434 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1435                                 struct sk_buff_head *skbs);
1436 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1437                                    struct sk_buff_head *skbs,
1438                                    void (*fn)(void *data), void *data);
1439
1440 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1441                          u16 transaction, u16 auth_alg,
1442                          u8 *extra, size_t extra_len, const u8 *bssid,
1443                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
1444 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1445                              const u8 *ie, size_t ie_len,
1446                              enum ieee80211_band band, u32 rate_mask,
1447                              u8 channel);
1448 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1449                                           u8 *dst, u32 ratemask,
1450                                           const u8 *ssid, size_t ssid_len,
1451                                           const u8 *ie, size_t ie_len,
1452                                           bool directed);
1453 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1454                               const u8 *ssid, size_t ssid_len,
1455                               const u8 *ie, size_t ie_len,
1456                               u32 ratemask, bool directed, bool no_cck);
1457
1458 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1459                                   const size_t supp_rates_len,
1460                                   const u8 *supp_rates);
1461 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1462                             struct ieee802_11_elems *elems,
1463                             enum ieee80211_band band);
1464 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1465                              enum ieee80211_smps_mode smps_mode);
1466 void ieee80211_recalc_smps(struct ieee80211_local *local);
1467
1468 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1469                           const u8 *ids, int n_ids, size_t offset);
1470 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1471 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1472                               u16 cap);
1473 u8 *ieee80211_ie_build_ht_info(u8 *pos,
1474                                 struct ieee80211_sta_ht_cap *ht_cap,
1475                                 struct ieee80211_channel *channel,
1476                                 enum nl80211_channel_type channel_type);
1477
1478 /* internal work items */
1479 void ieee80211_work_init(struct ieee80211_local *local);
1480 void ieee80211_add_work(struct ieee80211_work *wk);
1481 void free_work(struct ieee80211_work *wk);
1482 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1483 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1484                                    struct ieee80211_channel *chan,
1485                                    enum nl80211_channel_type channel_type,
1486                                    unsigned int duration, u64 *cookie);
1487 int ieee80211_wk_cancel_remain_on_channel(
1488         struct ieee80211_sub_if_data *sdata, u64 cookie);
1489
1490 /* channel management */
1491 enum ieee80211_chan_mode {
1492         CHAN_MODE_UNDEFINED,
1493         CHAN_MODE_HOPPING,
1494         CHAN_MODE_FIXED,
1495 };
1496
1497 enum ieee80211_chan_mode
1498 ieee80211_get_channel_mode(struct ieee80211_local *local,
1499                            struct ieee80211_sub_if_data *ignore);
1500 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1501                                 struct ieee80211_sub_if_data *sdata,
1502                                 enum nl80211_channel_type chantype);
1503 enum nl80211_channel_type
1504 ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info);
1505 enum nl80211_channel_type ieee80211_get_tx_channel_type(
1506                                         struct ieee80211_local *local,
1507                                         enum nl80211_channel_type channel_type);
1508
1509 #ifdef CONFIG_MAC80211_NOINLINE
1510 #define debug_noinline noinline
1511 #else
1512 #define debug_noinline
1513 #endif
1514
1515 #endif /* IEEE80211_I_H */