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
 110 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 111 {
 112 #ifdef CONFIG_MAC80211_MESH
 113         return bss->mesh_cfg;
 114 #endif
 115         return NULL;
 116 }
 117
 118 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 119 {
 120 #ifdef CONFIG_MAC80211_MESH
 121         return bss->mesh_id;
 122 #endif
 123         return NULL;
 124 }
 125
 126 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 127 {
 128 #ifdef CONFIG_MAC80211_MESH
 129         return bss->mesh_id_len;
 130 #endif
 131         return 0;
 132 }
 133
 134
 135 typedef unsigned __bitwise__ ieee80211_tx_result;
 136 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 137 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 138 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 139
 140 #define IEEE80211_TX_UNICAST            BIT(1)
 141 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 142
 143 struct ieee80211_tx_data {
 144         struct sk_buff *skb;
 145         struct sk_buff_head skbs;
 146         struct ieee80211_local *local;
 147         struct ieee80211_sub_if_data *sdata;
 148         struct sta_info *sta;
 149         struct ieee80211_key *key;
 150
 151         struct ieee80211_channel *channel;
 152
 153         unsigned int flags;
 154 };
 155
 156
 157 typedef unsigned __bitwise__ ieee80211_rx_result;
 158 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 159 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 160 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 161 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 162
 163 /**
 164  * enum ieee80211_packet_rx_flags - packet RX flags
 165  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 166  *      (incl. multicast frames)
 167  * @IEEE80211_RX_IN_SCAN: received while scanning
 168  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 169  * @IEEE80211_RX_AMSDU: a-MSDU packet
 170  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 171  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 172  *
 173  * These are per-frame flags that are attached to a frame in the
 174  * @rx_flags field of &struct ieee80211_rx_status.
 175  */
 176 enum ieee80211_packet_rx_flags {
 177         IEEE80211_RX_IN_SCAN                    = BIT(0),
 178         IEEE80211_RX_RA_MATCH                   = BIT(1),
 179         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 180         IEEE80211_RX_AMSDU                      = BIT(3),
 181         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 182         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 183 };
 184
 185 /**
 186  * enum ieee80211_rx_flags - RX data flags
 187  *
 188  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 189  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 190  *      to cfg80211_report_obss_beacon().
 191  *
 192  * These flags are used across handling multiple interfaces
 193  * for a single frame.
 194  */
 195 enum ieee80211_rx_flags {
 196         IEEE80211_RX_CMNTR              = BIT(0),
 197         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 198 };
 199
 200 struct ieee80211_rx_data {
 201         struct sk_buff *skb;
 202         struct ieee80211_local *local;
 203         struct ieee80211_sub_if_data *sdata;
 204         struct sta_info *sta;
 205         struct ieee80211_key *key;
 206
 207         unsigned int flags;
 208
 209         /*
 210          * Index into sequence numbers array, 0..16
 211          * since the last (16) is used for non-QoS,
 212          * will be 16 on non-QoS frames.
 213          */
 214         int seqno_idx;
 215
 216         /*
 217          * Index into the security IV/PN arrays, 0..16
 218          * since the last (16) is used for CCMP-encrypted
 219          * management frames, will be set to 16 on mgmt
 220          * frames and 0 on non-QoS frames.
 221          */
 222         int security_idx;
 223
 224         u32 tkip_iv32;
 225         u16 tkip_iv16;
 226 };
 227
 228 struct beacon_data {
 229         u8 *head, *tail;
 230         int head_len, tail_len;
 231         int dtim_period;
 232 };
 233
 234 struct ieee80211_if_ap {
 235         struct beacon_data __rcu *beacon;
 236         struct sk_buff __rcu *probe_resp;
 237
 238         struct list_head vlans;
 239
 240         /* yes, this looks ugly, but guarantees that we can later use
 241          * bitmap_empty :)
 242          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 243         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 244         struct sk_buff_head ps_bc_buf;
 245         atomic_t num_sta_ps; /* number of stations in PS mode */
 246         atomic_t num_sta_authorized; /* number of authorized stations */
 247         int dtim_count;
 248         bool dtim_bc_mc;
 249 };
 250
 251 struct ieee80211_if_wds {
 252         struct sta_info *sta;
 253         u8 remote_addr[ETH_ALEN];
 254 };
 255
 256 struct ieee80211_if_vlan {
 257         struct list_head list;
 258
 259         /* used for all tx if the VLAN is configured to 4-addr mode */
 260         struct sta_info __rcu *sta;
 261 };
 262
 263 struct mesh_stats {
 264         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 265         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 266         __u32 fwded_frames;             /* Mesh total forwarded frames */
 267         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 268         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 269         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 270         atomic_t estab_plinks;
 271 };
 272
 273 #define PREQ_Q_F_START          0x1
 274 #define PREQ_Q_F_REFRESH        0x2
 275 struct mesh_preq_queue {
 276         struct list_head list;
 277         u8 dst[ETH_ALEN];
 278         u8 flags;
 279 };
 280
 281 enum ieee80211_work_type {
 282         IEEE80211_WORK_ABORT,
 283         IEEE80211_WORK_REMAIN_ON_CHANNEL,
 284         IEEE80211_WORK_OFFCHANNEL_TX,
 285 };
 286
 287 /**
 288  * enum work_done_result - indicates what to do after work was done
 289  *
 290  * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 291  * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 292  *      should be requeued.
 293  */
 294 enum work_done_result {
 295         WORK_DONE_DESTROY,
 296         WORK_DONE_REQUEUE,
 297 };
 298
 299 struct ieee80211_work {
 300         struct list_head list;
 301
 302         struct rcu_head rcu_head;
 303
 304         struct ieee80211_sub_if_data *sdata;
 305
 306         enum work_done_result (*done)(struct ieee80211_work *wk,
 307                                       struct sk_buff *skb);
 308
 309         struct ieee80211_channel *chan;
 310         enum nl80211_channel_type chan_type;
 311
 312         unsigned long timeout;
 313         enum ieee80211_work_type type;
 314
 315         bool started;
 316
 317         union {
 318                 struct {
 319                         u32 duration;
 320                 } remain;
 321                 struct {
 322                         struct sk_buff *frame;
 323                         u32 wait;
 324                         bool status;
 325                 } offchan_tx;
 326         };
 327
 328         size_t data_len;
 329         u8 data[];
 330 };
 331
 332 /* flags used in struct ieee80211_if_managed.flags */
 333 enum ieee80211_sta_flags {
 334         IEEE80211_STA_BEACON_POLL       = BIT(0),
 335         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 336         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 337         IEEE80211_STA_DISABLE_11N       = BIT(4),
 338         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 339         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 340         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 341         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 342         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 343 };
 344
 345 struct ieee80211_mgd_auth_data {
 346         struct cfg80211_bss *bss;
 347         unsigned long timeout;
 348         int tries;
 349         u16 algorithm, expected_transaction;
 350
 351         u8 key[WLAN_KEY_LEN_WEP104];
 352         u8 key_len, key_idx;
 353         bool synced;
 354         bool done;
 355
 356         size_t ie_len;
 357         u8 ie[];
 358 };
 359
 360 struct ieee80211_mgd_assoc_data {
 361         struct cfg80211_bss *bss;
 362         const u8 *supp_rates;
 363         const u8 *ht_information_ie;
 364
 365         unsigned long timeout;
 366         int tries;
 367
 368         u16 capability;
 369         u8 prev_bssid[ETH_ALEN];
 370         u8 ssid[IEEE80211_MAX_SSID_LEN];
 371         u8 ssid_len;
 372         u8 supp_rates_len;
 373         bool wmm_used, uapsd_used;
 374         bool have_beacon;
 375         bool sent_assoc;
 376         bool synced;
 377
 378         size_t ie_len;
 379         u8 ie[];
 380 };
 381
 382 struct ieee80211_if_managed {
 383         struct timer_list timer;
 384         struct timer_list conn_mon_timer;
 385         struct timer_list bcn_mon_timer;
 386         struct timer_list chswitch_timer;
 387         struct work_struct monitor_work;
 388         struct work_struct chswitch_work;
 389         struct work_struct beacon_connection_loss_work;
 390
 391         unsigned long beacon_timeout;
 392         unsigned long probe_timeout;
 393         int probe_send_count;
 394         bool nullfunc_failed;
 395
 396         struct mutex mtx;
 397         struct cfg80211_bss *associated;
 398         struct ieee80211_mgd_auth_data *auth_data;
 399         struct ieee80211_mgd_assoc_data *assoc_data;
 400
 401         u8 bssid[ETH_ALEN];
 402
 403         u16 aid;
 404
 405         unsigned long timers_running; /* used for quiesce/restart */
 406         bool powersave; /* powersave requested for this iface */
 407         bool broken_ap; /* AP is broken -- turn off powersave */
 408         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 409                                  ap_smps, /* smps mode AP thinks we're in */
 410                                  driver_smps_mode; /* smps mode request */
 411
 412         struct work_struct request_smps_work;
 413
 414         unsigned int flags;
 415
 416         bool beacon_crc_valid;
 417         u32 beacon_crc;
 418
 419         enum {
 420                 IEEE80211_MFP_DISABLED,
 421                 IEEE80211_MFP_OPTIONAL,
 422                 IEEE80211_MFP_REQUIRED
 423         } mfp; /* management frame protection */
 424
 425         int wmm_last_param_set;
 426
 427         u8 use_4addr;
 428
 429         /* Signal strength from the last Beacon frame in the current BSS. */
 430         int last_beacon_signal;
 431
 432         /*
 433          * Weighted average of the signal strength from Beacon frames in the
 434          * current BSS. This is in units of 1/16 of the signal unit to maintain
 435          * accuracy and to speed up calculations, i.e., the value need to be
 436          * divided by 16 to get the actual value.
 437          */
 438         int ave_beacon_signal;
 439
 440         /*
 441          * Number of Beacon frames used in ave_beacon_signal. This can be used
 442          * to avoid generating less reliable cqm events that would be based
 443          * only on couple of received frames.
 444          */
 445         unsigned int count_beacon_signal;
 446
 447         /*
 448          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 449          * that triggered a cqm event. 0 indicates that no event has been
 450          * generated for the current association.
 451          */
 452         int last_cqm_event_signal;
 453
 454         /*
 455          * State variables for keeping track of RSSI of the AP currently
 456          * connected to and informing driver when RSSI has gone
 457          * below/above a certain threshold.
 458          */
 459         int rssi_min_thold, rssi_max_thold;
 460         int last_ave_beacon_signal;
 461
 462         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 463         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 464 };
 465
 466 struct ieee80211_if_ibss {
 467         struct timer_list timer;
 468
 469         struct mutex mtx;
 470
 471         unsigned long last_scan_completed;
 472
 473         u32 basic_rates;
 474
 475         bool timer_running;
 476
 477         bool fixed_bssid;
 478         bool fixed_channel;
 479         bool privacy;
 480
 481         bool control_port;
 482
 483         u8 bssid[ETH_ALEN];
 484         u8 ssid[IEEE80211_MAX_SSID_LEN];
 485         u8 ssid_len, ie_len;
 486         u8 *ie;
 487         struct ieee80211_channel *channel;
 488         enum nl80211_channel_type channel_type;
 489
 490         unsigned long ibss_join_req;
 491         /* probe response/beacon for IBSS */
 492         struct sk_buff __rcu *presp;
 493         struct sk_buff *skb;
 494
 495         spinlock_t incomplete_lock;
 496         struct list_head incomplete_stations;
 497
 498         enum {
 499                 IEEE80211_IBSS_MLME_SEARCH,
 500                 IEEE80211_IBSS_MLME_JOINED,
 501         } state;
 502 };
 503
 504 struct ieee80211_if_mesh {
 505         struct timer_list housekeeping_timer;
 506         struct timer_list mesh_path_timer;
 507         struct timer_list mesh_path_root_timer;
 508
 509         unsigned long timers_running;
 510
 511         unsigned long wrkq_flags;
 512
 513         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 514         size_t mesh_id_len;
 515         /* Active Path Selection Protocol Identifier */
 516         u8 mesh_pp_id;
 517         /* Active Path Selection Metric Identifier */
 518         u8 mesh_pm_id;
 519         /* Congestion Control Mode Identifier */
 520         u8 mesh_cc_id;
 521         /* Synchronization Protocol Identifier */
 522         u8 mesh_sp_id;
 523         /* Authentication Protocol Identifier */
 524         u8 mesh_auth_id;
 525         /* Local mesh Sequence Number */
 526         u32 sn;
 527         /* Last used PREQ ID */
 528         u32 preq_id;
 529         atomic_t mpaths;
 530         /* Timestamp of last SN update */
 531         unsigned long last_sn_update;
 532         /* Time when it's ok to send next PERR */
 533         unsigned long next_perr;
 534         /* Timestamp of last PREQ sent */
 535         unsigned long last_preq;
 536         struct mesh_rmc *rmc;
 537         spinlock_t mesh_preq_queue_lock;
 538         struct mesh_preq_queue preq_queue;
 539         int preq_queue_len;
 540         struct mesh_stats mshstats;
 541         struct mesh_config mshcfg;
 542         u32 mesh_seqnum;
 543         bool accepting_plinks;
 544         int num_gates;
 545         const u8 *ie;
 546         u8 ie_len;
 547         enum {
 548                 IEEE80211_MESH_SEC_NONE = 0x0,
 549                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 550                 IEEE80211_MESH_SEC_SECURED = 0x2,
 551         } security;
 552 };
 553
 554 #ifdef CONFIG_MAC80211_MESH
 555 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 556         do { (msh)->mshstats.name++; } while (0)
 557 #else
 558 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 559         do { } while (0)
 560 #endif
 561
 562 /**
 563  * enum ieee80211_sub_if_data_flags - virtual interface flags
 564  *
 565  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 566  * @IEEE80211_SDATA_PROMISC: interface is promisc
 567  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 568  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 569  *      associated stations and deliver multicast frames both
 570  *      back to wireless media and to the local net stack.
 571  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 572  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 573  */
 574 enum ieee80211_sub_if_data_flags {
 575         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 576         IEEE80211_SDATA_PROMISC                 = BIT(1),
 577         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 578         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 579         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 580         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 581 };
 582
 583 /**
 584  * enum ieee80211_sdata_state_bits - virtual interface state bits
 585  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 586  *      mirrors netif_running() but is separate for interface type
 587  *      change handling while the interface is up
 588  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 589  *      mode, so queues are stopped
 590  */
 591 enum ieee80211_sdata_state_bits {
 592         SDATA_STATE_RUNNING,
 593         SDATA_STATE_OFFCHANNEL,
 594 };
 595
 596 struct ieee80211_sub_if_data {
 597         struct list_head list;
 598
 599         struct wireless_dev wdev;
 600
 601         /* keys */
 602         struct list_head key_list;
 603
 604         /* count for keys needing tailroom space allocation */
 605         int crypto_tx_tailroom_needed_cnt;
 606
 607         struct net_device *dev;
 608         struct ieee80211_local *local;
 609
 610         unsigned int flags;
 611
 612         unsigned long state;
 613
 614         int drop_unencrypted;
 615
 616         char name[IFNAMSIZ];
 617
 618         /*
 619          * keep track of whether the HT opmode (stored in
 620          * vif.bss_info.ht_operation_mode) is valid.
 621          */
 622         bool ht_opmode_valid;
 623
 624         /* to detect idle changes */
 625         bool old_idle;
 626
 627         /* Fragment table for host-based reassembly */
 628         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 629         unsigned int fragment_next;
 630
 631         /* TID bitmap for NoAck policy */
 632         u16 noack_map;
 633
 634         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 635         struct ieee80211_key __rcu *default_unicast_key;
 636         struct ieee80211_key __rcu *default_multicast_key;
 637         struct ieee80211_key __rcu *default_mgmt_key;
 638
 639         u16 sequence_number;
 640         __be16 control_port_protocol;
 641         bool control_port_no_encrypt;
 642
 643         struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
 644
 645         struct work_struct work;
 646         struct sk_buff_head skb_queue;
 647
 648         bool arp_filter_state;
 649
 650         /*
 651          * AP this belongs to: self in AP mode and
 652          * corresponding AP in VLAN mode, NULL for
 653          * all others (might be needed later in IBSS)
 654          */
 655         struct ieee80211_if_ap *bss;
 656
 657         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 658         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 659         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 660
 661         union {
 662                 struct ieee80211_if_ap ap;
 663                 struct ieee80211_if_wds wds;
 664                 struct ieee80211_if_vlan vlan;
 665                 struct ieee80211_if_managed mgd;
 666                 struct ieee80211_if_ibss ibss;
 667                 struct ieee80211_if_mesh mesh;
 668                 u32 mntr_flags;
 669         } u;
 670
 671 #ifdef CONFIG_MAC80211_DEBUGFS
 672         struct {
 673                 struct dentry *dir;
 674                 struct dentry *subdir_stations;
 675                 struct dentry *default_unicast_key;
 676                 struct dentry *default_multicast_key;
 677                 struct dentry *default_mgmt_key;
 678         } debugfs;
 679 #endif
 680         /* must be last, dynamically sized area in this! */
 681         struct ieee80211_vif vif;
 682 };
 683
 684 static inline
 685 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 686 {
 687         return container_of(p, struct ieee80211_sub_if_data, vif);
 688 }
 689
 690 enum sdata_queue_type {
 691         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 692         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 693         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 694 };
 695
 696 enum {
 697         IEEE80211_RX_MSG        = 1,
 698         IEEE80211_TX_STATUS_MSG = 2,
 699         IEEE80211_EOSP_MSG      = 3,
 700 };
 701
 702 struct skb_eosp_msg_data {
 703         u8 sta[ETH_ALEN], iface[ETH_ALEN];
 704 };
 705
 706 enum queue_stop_reason {
 707         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 708         IEEE80211_QUEUE_STOP_REASON_PS,
 709         IEEE80211_QUEUE_STOP_REASON_CSA,
 710         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 711         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 712         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 713         IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE,
 714 };
 715
 716 #ifdef CONFIG_MAC80211_LEDS
 717 struct tpt_led_trigger {
 718         struct led_trigger trig;
 719         char name[32];
 720         const struct ieee80211_tpt_blink *blink_table;
 721         unsigned int blink_table_len;
 722         struct timer_list timer;
 723         unsigned long prev_traffic;
 724         unsigned long tx_bytes, rx_bytes;
 725         unsigned int active, want;
 726         bool running;
 727 };
 728 #endif
 729
 730 /**
 731  * mac80211 scan flags - currently active scan mode
 732  *
 733  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 734  *      well be on the operating channel
 735  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 736  *      determine if we are on the operating channel or not
 737  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 738  *      that the scan completed.
 739  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 740  *      a scan complete for an aborted scan.
 741  */
 742 enum {
 743         SCAN_SW_SCANNING,
 744         SCAN_HW_SCANNING,
 745         SCAN_COMPLETED,
 746         SCAN_ABORTED,
 747 };
 748
 749 /**
 750  * enum mac80211_scan_state - scan state machine states
 751  *
 752  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 753  *      determines if we should keep on scanning or switch back to the
 754  *      operating channel
 755  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 756  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 757  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 758  *      send out data
 759  * @SCAN_RESUME: Resume the scan and scan the next channel
 760  */
 761 enum mac80211_scan_state {
 762         SCAN_DECISION,
 763         SCAN_SET_CHANNEL,
 764         SCAN_SEND_PROBE,
 765         SCAN_SUSPEND,
 766         SCAN_RESUME,
 767 };
 768
 769 struct ieee80211_local {
 770         /* embed the driver visible part.
 771          * don't cast (use the static inlines below), but we keep
 772          * it first anyway so they become a no-op */
 773         struct ieee80211_hw hw;
 774
 775         const struct ieee80211_ops *ops;
 776
 777         /*
 778          * work stuff, potentially off-channel (in the future)
 779          */
 780         struct list_head work_list;
 781         struct timer_list work_timer;
 782         struct work_struct work_work;
 783
 784         /*
 785          * private workqueue to mac80211. mac80211 makes this accessible
 786          * via ieee80211_queue_work()
 787          */
 788         struct workqueue_struct *workqueue;
 789
 790         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 791         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 792         spinlock_t queue_stop_reason_lock;
 793
 794         int open_count;
 795         int monitors, cooked_mntrs;
 796         /* number of interfaces with corresponding FIF_ flags */
 797         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 798             fif_probe_req;
 799         int probe_req_reg;
 800         unsigned int filter_flags; /* FIF_* */
 801
 802         bool wiphy_ciphers_allocated;
 803
 804         /* protects the aggregated multicast list and filter calls */
 805         spinlock_t filter_lock;
 806
 807         /* used for uploading changed mc list */
 808         struct work_struct reconfig_filter;
 809
 810         /* used to reconfigure hardware SM PS */
 811         struct work_struct recalc_smps;
 812
 813         /* aggregated multicast list */
 814         struct netdev_hw_addr_list mc_list;
 815
 816         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 817
 818         /*
 819          * suspended is true if we finished all the suspend _and_ we have
 820          * not yet come up from resume. This is to be used by mac80211
 821          * to ensure driver sanity during suspend and mac80211's own
 822          * sanity. It can eventually be used for WoW as well.
 823          */
 824         bool suspended;
 825
 826         /*
 827          * Resuming is true while suspended, but when we're reprogramming the
 828          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 829          * again even though some other parts of the stack are still suspended
 830          * and we still drop received frames to avoid waking the stack.
 831          */
 832         bool resuming;
 833
 834         /*
 835          * quiescing is true during the suspend process _only_ to
 836          * ease timer cancelling etc.
 837          */
 838         bool quiescing;
 839
 840         /* device is started */
 841         bool started;
 842
 843         /* wowlan is enabled -- don't reconfig on resume */
 844         bool wowlan;
 845
 846         int tx_headroom; /* required headroom for hardware/radiotap */
 847
 848         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 849          * added to skb_queue will be processed, but frames in
 850          * skb_queue_unreliable may be dropped if the total length of these
 851          * queues increases over the limit. */
 852 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 853         struct tasklet_struct tasklet;
 854         struct sk_buff_head skb_queue;
 855         struct sk_buff_head skb_queue_unreliable;
 856
 857         /*
 858          * Internal FIFO queue which is shared between multiple rx path
 859          * stages. Its main task is to provide a serialization mechanism,
 860          * so all rx handlers can enjoy having exclusive access to their
 861          * private data structures.
 862          */
 863         struct sk_buff_head rx_skb_queue;
 864         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 865
 866         /* Station data */
 867         /*
 868          * The mutex only protects the list, hash table and
 869          * counter, reads are done with RCU.
 870          */
 871         struct mutex sta_mtx;
 872         spinlock_t tim_lock;
 873         unsigned long num_sta;
 874         struct list_head sta_list;
 875         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
 876         struct timer_list sta_cleanup;
 877         int sta_generation;
 878
 879         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 880         struct tasklet_struct tx_pending_tasklet;
 881
 882         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 883
 884         /* number of interfaces with corresponding IFF_ flags */
 885         atomic_t iff_allmultis, iff_promiscs;
 886
 887         struct rate_control_ref *rate_ctrl;
 888
 889         struct crypto_cipher *wep_tx_tfm;
 890         struct crypto_cipher *wep_rx_tfm;
 891         u32 wep_iv;
 892
 893         /* see iface.c */
 894         struct list_head interfaces;
 895         struct mutex iflist_mtx;
 896
 897         /*
 898          * Key mutex, protects sdata's key_list and sta_info's
 899          * key pointers (write access, they're RCU.)
 900          */
 901         struct mutex key_mtx;
 902
 903         /* mutex for scan and work locking */
 904         struct mutex mtx;
 905
 906         /* Scanning and BSS list */
 907         unsigned long scanning;
 908         struct cfg80211_ssid scan_ssid;
 909         struct cfg80211_scan_request *int_scan_req;
 910         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 911         struct ieee80211_channel *scan_channel;
 912         enum ieee80211_band hw_scan_band;
 913         int scan_channel_idx;
 914         int scan_ies_len;
 915
 916         bool sched_scanning;
 917         struct ieee80211_sched_scan_ies sched_scan_ies;
 918         struct work_struct sched_scan_stopped_work;
 919
 920         unsigned long leave_oper_channel_time;
 921         enum mac80211_scan_state next_scan_state;
 922         struct delayed_work scan_work;
 923         struct ieee80211_sub_if_data *scan_sdata;
 924         enum nl80211_channel_type _oper_channel_type;
 925         struct ieee80211_channel *oper_channel, *csa_channel;
 926
 927         /* Temporary remain-on-channel for off-channel operations */
 928         struct ieee80211_channel *tmp_channel;
 929         enum nl80211_channel_type tmp_channel_type;
 930
 931         /* SNMP counters */
 932         /* dot11CountersTable */
 933         u32 dot11TransmittedFragmentCount;
 934         u32 dot11MulticastTransmittedFrameCount;
 935         u32 dot11FailedCount;
 936         u32 dot11RetryCount;
 937         u32 dot11MultipleRetryCount;
 938         u32 dot11FrameDuplicateCount;
 939         u32 dot11ReceivedFragmentCount;
 940         u32 dot11MulticastReceivedFrameCount;
 941         u32 dot11TransmittedFrameCount;
 942
 943 #ifdef CONFIG_MAC80211_LEDS
 944         int tx_led_counter, rx_led_counter;
 945         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 946         struct tpt_led_trigger *tpt_led_trigger;
 947         char tx_led_name[32], rx_led_name[32],
 948              assoc_led_name[32], radio_led_name[32];
 949 #endif
 950
 951 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 952         /* TX/RX handler statistics */
 953         unsigned int tx_handlers_drop;
 954         unsigned int tx_handlers_queued;
 955         unsigned int tx_handlers_drop_unencrypted;
 956         unsigned int tx_handlers_drop_fragment;
 957         unsigned int tx_handlers_drop_wep;
 958         unsigned int tx_handlers_drop_not_assoc;
 959         unsigned int tx_handlers_drop_unauth_port;
 960         unsigned int rx_handlers_drop;
 961         unsigned int rx_handlers_queued;
 962         unsigned int rx_handlers_drop_nullfunc;
 963         unsigned int rx_handlers_drop_defrag;
 964         unsigned int rx_handlers_drop_short;
 965         unsigned int rx_handlers_drop_passive_scan;
 966         unsigned int tx_expand_skb_head;
 967         unsigned int tx_expand_skb_head_cloned;
 968         unsigned int rx_expand_skb_head;
 969         unsigned int rx_expand_skb_head2;
 970         unsigned int rx_handlers_fragments;
 971         unsigned int tx_status_drop;
 972 #define I802_DEBUG_INC(c) (c)++
 973 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 974 #define I802_DEBUG_INC(c) do { } while (0)
 975 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 976
 977
 978         int total_ps_buffered; /* total number of all buffered unicast and
 979                                 * multicast packets for power saving stations
 980                                 */
 981         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 982
 983         /*
 984          * Bitmask of enabled u-apsd queues,
 985          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 986          * to take effect.
 987          */
 988         unsigned int uapsd_queues;
 989
 990         /*
 991          * Maximum number of buffered frames AP can deliver during a
 992          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 993          * Needs a new association to take effect.
 994          */
 995         unsigned int uapsd_max_sp_len;
 996
 997         bool pspolling;
 998         bool offchannel_ps_enabled;
 999         /*
1000          * PS can only be enabled when we have exactly one managed
1001          * interface (and monitors) in PS, this then points there.
1002          */
1003         struct ieee80211_sub_if_data *ps_sdata;
1004         struct work_struct dynamic_ps_enable_work;
1005         struct work_struct dynamic_ps_disable_work;
1006         struct timer_list dynamic_ps_timer;
1007         struct notifier_block network_latency_notifier;
1008         struct notifier_block ifa_notifier;
1009
1010         /*
1011          * The dynamic ps timeout configured from user space via WEXT -
1012          * this will override whatever chosen by mac80211 internally.
1013          */
1014         int dynamic_ps_forced_timeout;
1015         int dynamic_ps_user_timeout;
1016         bool disable_dynamic_ps;
1017
1018         int user_power_level; /* in dBm */
1019         int power_constr_level; /* in dBm */
1020
1021         enum ieee80211_smps_mode smps_mode;
1022
1023         struct work_struct restart_work;
1024
1025 #ifdef CONFIG_MAC80211_DEBUGFS
1026         struct local_debugfsdentries {
1027                 struct dentry *rcdir;
1028                 struct dentry *keys;
1029         } debugfs;
1030 #endif
1031
1032         struct ieee80211_channel *hw_roc_channel;
1033         struct net_device *hw_roc_dev;
1034         struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
1035         struct work_struct hw_roc_start, hw_roc_done;
1036         enum nl80211_channel_type hw_roc_channel_type;
1037         unsigned int hw_roc_duration;
1038         u32 hw_roc_cookie;
1039         bool hw_roc_for_tx;
1040
1041         struct idr ack_status_frames;
1042         spinlock_t ack_status_lock;
1043
1044         /* dummy netdev for use w/ NAPI */
1045         struct net_device napi_dev;
1046
1047         struct napi_struct napi;
1048 };
1049
1050 static inline struct ieee80211_sub_if_data *
1051 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1052 {
1053         return netdev_priv(dev);
1054 }
1055
1056 /* this struct represents 802.11n's RA/TID combination */
1057 struct ieee80211_ra_tid {
1058         u8 ra[ETH_ALEN];
1059         u16 tid;
1060 };
1061
1062 /* Parsed Information Elements */
1063 struct ieee802_11_elems {
1064         u8 *ie_start;
1065         size_t total_len;
1066
1067         /* pointers to IEs */
1068         u8 *ssid;
1069         u8 *supp_rates;
1070         u8 *fh_params;
1071         u8 *ds_params;
1072         u8 *cf_params;
1073         struct ieee80211_tim_ie *tim;
1074         u8 *ibss_params;
1075         u8 *challenge;
1076         u8 *wpa;
1077         u8 *rsn;
1078         u8 *erp_info;
1079         u8 *ext_supp_rates;
1080         u8 *wmm_info;
1081         u8 *wmm_param;
1082         struct ieee80211_ht_cap *ht_cap_elem;
1083         struct ieee80211_ht_info *ht_info_elem;
1084         struct ieee80211_meshconf_ie *mesh_config;
1085         u8 *mesh_id;
1086         u8 *peering;
1087         u8 *preq;
1088         u8 *prep;
1089         u8 *perr;
1090         struct ieee80211_rann_ie *rann;
1091         u8 *ch_switch_elem;
1092         u8 *country_elem;
1093         u8 *pwr_constr_elem;
1094         u8 *quiet_elem; /* first quite element */
1095         u8 *timeout_int;
1096
1097         /* length of them, respectively */
1098         u8 ssid_len;
1099         u8 supp_rates_len;
1100         u8 fh_params_len;
1101         u8 ds_params_len;
1102         u8 cf_params_len;
1103         u8 tim_len;
1104         u8 ibss_params_len;
1105         u8 challenge_len;
1106         u8 wpa_len;
1107         u8 rsn_len;
1108         u8 erp_info_len;
1109         u8 ext_supp_rates_len;
1110         u8 wmm_info_len;
1111         u8 wmm_param_len;
1112         u8 mesh_id_len;
1113         u8 peering_len;
1114         u8 preq_len;
1115         u8 prep_len;
1116         u8 perr_len;
1117         u8 ch_switch_elem_len;
1118         u8 country_elem_len;
1119         u8 pwr_constr_elem_len;
1120         u8 quiet_elem_len;
1121         u8 num_of_quiet_elem;   /* can be more the one */
1122         u8 timeout_int_len;
1123 };
1124
1125 static inline struct ieee80211_local *hw_to_local(
1126         struct ieee80211_hw *hw)
1127 {
1128         return container_of(hw, struct ieee80211_local, hw);
1129 }
1130
1131 static inline struct ieee80211_hw *local_to_hw(
1132         struct ieee80211_local *local)
1133 {
1134         return &local->hw;
1135 }
1136
1137
1138 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1139 {
1140         return compare_ether_addr(raddr, addr) == 0 ||
1141                is_broadcast_ether_addr(raddr);
1142 }
1143
1144
1145 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1146 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1147 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1148                                       u32 changed);
1149 void ieee80211_configure_filter(struct ieee80211_local *local);
1150 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1151
1152 /* STA code */
1153 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1154 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1155                        struct cfg80211_auth_request *req);
1156 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1157                         struct cfg80211_assoc_request *req);
1158 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1159                          struct cfg80211_deauth_request *req,
1160                          void *cookie);
1161 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1162                            struct cfg80211_disassoc_request *req,
1163                            void *cookie);
1164 void ieee80211_send_pspoll(struct ieee80211_local *local,
1165                            struct ieee80211_sub_if_data *sdata);
1166 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1167 int ieee80211_max_network_latency(struct notifier_block *nb,
1168                                   unsigned long data, void *dummy);
1169 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1170 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1171                                       struct ieee80211_channel_sw_ie *sw_elem,
1172                                       struct ieee80211_bss *bss,
1173                                       u64 timestamp);
1174 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1175 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1176 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1177 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1178                                   struct sk_buff *skb);
1179 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1180 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1181
1182 /* IBSS code */
1183 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1184 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1185 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1186                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1187 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1188                         struct cfg80211_ibss_params *params);
1189 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1190 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1191 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1192 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1193 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1194                                    struct sk_buff *skb);
1195
1196 /* mesh code */
1197 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1198 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1199                                    struct sk_buff *skb);
1200
1201 /* scan/BSS handling */
1202 void ieee80211_scan_work(struct work_struct *work);
1203 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1204                                     const u8 *ssid, u8 ssid_len,
1205                                     struct ieee80211_channel *chan);
1206 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1207                            struct cfg80211_scan_request *req);
1208 void ieee80211_scan_cancel(struct ieee80211_local *local);
1209 ieee80211_rx_result
1210 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1211
1212 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1213 struct ieee80211_bss *
1214 ieee80211_bss_info_update(struct ieee80211_local *local,
1215                           struct ieee80211_rx_status *rx_status,
1216                           struct ieee80211_mgmt *mgmt,
1217                           size_t len,
1218                           struct ieee802_11_elems *elems,
1219                           struct ieee80211_channel *channel,
1220                           bool beacon);
1221 struct ieee80211_bss *
1222 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1223                      u8 *ssid, u8 ssid_len);
1224 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1225                           struct ieee80211_bss *bss);
1226
1227 /* scheduled scan handling */
1228 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1229                                        struct cfg80211_sched_scan_request *req);
1230 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1231 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1232
1233 /* off-channel helpers */
1234 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1235                                     bool offchannel_ps_enable);
1236 void ieee80211_offchannel_return(struct ieee80211_local *local,
1237                                  bool offchannel_ps_disable);
1238 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1239
1240 /* interface handling */
1241 int ieee80211_iface_init(void);
1242 void ieee80211_iface_exit(void);
1243 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1244                      struct net_device **new_dev, enum nl80211_iftype type,
1245                      struct vif_params *params);
1246 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1247                              enum nl80211_iftype type);
1248 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1249 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1250 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1251 void ieee80211_recalc_idle(struct ieee80211_local *local);
1252 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1253                                     const int offset);
1254
1255 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1256 {
1257         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1258 }
1259
1260 /* tx handling */
1261 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1262 void ieee80211_tx_pending(unsigned long data);
1263 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1264                                          struct net_device *dev);
1265 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1266                                        struct net_device *dev);
1267
1268 /* HT */
1269 bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata);
1270 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1271                                      struct ieee80211_sta_ht_cap *ht_cap);
1272 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1273                                        struct ieee80211_supported_band *sband,
1274                                        struct ieee80211_ht_cap *ht_cap_ie,
1275                                        struct ieee80211_sta_ht_cap *ht_cap);
1276 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1277                           const u8 *da, u16 tid,
1278                           u16 initiator, u16 reason_code);
1279 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1280                                enum ieee80211_smps_mode smps, const u8 *da,
1281                                const u8 *bssid);
1282 void ieee80211_request_smps_work(struct work_struct *work);
1283
1284 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1285                                      u16 initiator, u16 reason, bool stop);
1286 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1287                                     u16 initiator, u16 reason, bool stop);
1288 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1289 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1290                              struct sta_info *sta,
1291                              struct ieee80211_mgmt *mgmt, size_t len);
1292 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1293                                   struct sta_info *sta,
1294                                   struct ieee80211_mgmt *mgmt,
1295                                   size_t len);
1296 void ieee80211_process_addba_request(struct ieee80211_local *local,
1297                                      struct sta_info *sta,
1298                                      struct ieee80211_mgmt *mgmt,
1299                                      size_t len);
1300
1301 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1302                                    enum ieee80211_back_parties initiator,
1303                                    bool tx);
1304 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1305                                     enum ieee80211_back_parties initiator,
1306                                     bool tx);
1307 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1308 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1309 void ieee80211_ba_session_work(struct work_struct *work);
1310 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1311 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1312
1313 /* Spectrum management */
1314 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1315                                        struct ieee80211_mgmt *mgmt,
1316                                        size_t len);
1317
1318 /* Suspend/resume and hw reconfiguration */
1319 int ieee80211_reconfig(struct ieee80211_local *local);
1320 void ieee80211_stop_device(struct ieee80211_local *local);
1321
1322 #ifdef CONFIG_PM
1323 int __ieee80211_suspend(struct ieee80211_hw *hw,
1324                         struct cfg80211_wowlan *wowlan);
1325
1326 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1327 {
1328         struct ieee80211_local *local = hw_to_local(hw);
1329
1330         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1331                 "%s: resume with hardware scan still in progress\n",
1332                 wiphy_name(hw->wiphy));
1333
1334         return ieee80211_reconfig(hw_to_local(hw));
1335 }
1336 #else
1337 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1338                                       struct cfg80211_wowlan *wowlan)
1339 {
1340         return 0;
1341 }
1342
1343 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1344 {
1345         return 0;
1346 }
1347 #endif
1348
1349 /* utility functions/constants */
1350 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1351 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1352                         enum nl80211_iftype type);
1353 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1354                              int rate, int erp, int short_preamble);
1355 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1356                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1357                                      gfp_t gfp);
1358 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1359 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1360
1361 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1362                           struct sk_buff *skb, int tid);
1363 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1364                                     struct sk_buff *skb)
1365 {
1366         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1367         ieee80211_tx_skb_tid(sdata, skb, 7);
1368 }
1369
1370 void ieee802_11_parse_elems(u8 *start, size_t len,
1371                             struct ieee802_11_elems *elems);
1372 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1373                                struct ieee802_11_elems *elems,
1374                                u64 filter, u32 crc);
1375 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1376                               enum ieee80211_band band);
1377
1378 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1379 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1380 void ieee80211_dynamic_ps_timer(unsigned long data);
1381 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1382                              struct ieee80211_sub_if_data *sdata,
1383                              int powersave);
1384 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1385                              struct ieee80211_hdr *hdr);
1386 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1387                              struct ieee80211_hdr *hdr, bool ack);
1388 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1389
1390 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1391                                      enum queue_stop_reason reason);
1392 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1393                                      enum queue_stop_reason reason);
1394 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1395                                     enum queue_stop_reason reason);
1396 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1397                                     enum queue_stop_reason reason);
1398 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1399                                struct sk_buff *skb);
1400 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1401                                 struct sk_buff_head *skbs);
1402 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1403                                    struct sk_buff_head *skbs,
1404                                    void (*fn)(void *data), void *data);
1405
1406 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1407                          u16 transaction, u16 auth_alg,
1408                          u8 *extra, size_t extra_len, const u8 *bssid,
1409                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
1410 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1411                              const u8 *ie, size_t ie_len,
1412                              enum ieee80211_band band, u32 rate_mask,
1413                              u8 channel);
1414 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1415                                           u8 *dst, u32 ratemask,
1416                                           const u8 *ssid, size_t ssid_len,
1417                                           const u8 *ie, size_t ie_len,
1418                                           bool directed);
1419 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1420                               const u8 *ssid, size_t ssid_len,
1421                               const u8 *ie, size_t ie_len,
1422                               u32 ratemask, bool directed, bool no_cck);
1423
1424 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1425                                   const size_t supp_rates_len,
1426                                   const u8 *supp_rates);
1427 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1428                             struct ieee802_11_elems *elems,
1429                             enum ieee80211_band band);
1430 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1431                              enum ieee80211_smps_mode smps_mode);
1432 void ieee80211_recalc_smps(struct ieee80211_local *local);
1433
1434 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1435                           const u8 *ids, int n_ids, size_t offset);
1436 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1437 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1438                               u16 cap);
1439 u8 *ieee80211_ie_build_ht_info(u8 *pos,
1440                                 struct ieee80211_sta_ht_cap *ht_cap,
1441                                 struct ieee80211_channel *channel,
1442                                 enum nl80211_channel_type channel_type);
1443
1444 /* internal work items */
1445 void ieee80211_work_init(struct ieee80211_local *local);
1446 void ieee80211_add_work(struct ieee80211_work *wk);
1447 void free_work(struct ieee80211_work *wk);
1448 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1449 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1450                                    struct ieee80211_channel *chan,
1451                                    enum nl80211_channel_type channel_type,
1452                                    unsigned int duration, u64 *cookie);
1453 int ieee80211_wk_cancel_remain_on_channel(
1454         struct ieee80211_sub_if_data *sdata, u64 cookie);
1455
1456 /* channel management */
1457 enum ieee80211_chan_mode {
1458         CHAN_MODE_UNDEFINED,
1459         CHAN_MODE_HOPPING,
1460         CHAN_MODE_FIXED,
1461 };
1462
1463 enum ieee80211_chan_mode
1464 ieee80211_get_channel_mode(struct ieee80211_local *local,
1465                            struct ieee80211_sub_if_data *ignore);
1466 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1467                                 struct ieee80211_sub_if_data *sdata,
1468                                 enum nl80211_channel_type chantype);
1469 enum nl80211_channel_type
1470 ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info);
1471
1472 #ifdef CONFIG_MAC80211_NOINLINE
1473 #define debug_noinline noinline
1474 #else
1475 #define debug_noinline
1476 #endif
1477
1478 #endif /* IEEE80211_I_H */