net/mac80211/ieee80211_i.h

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005, Devicescape Software, Inc.
   4  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   5  * Copyright 2007-2010  Johannes Berg <johannes@sipsolutions.net>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef IEEE80211_I_H
  13 #define IEEE80211_I_H
  14
  15 #include <linux/kernel.h>
  16 #include <linux/device.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/types.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/leds.h>
  27 #include <linux/idr.h>
  28 #include <net/ieee80211_radiotap.h>
  29 #include <net/cfg80211.h>
  30 #include <net/mac80211.h>
  31 #include "key.h"
  32 #include "sta_info.h"
  33 #include "debug.h"
  34
  35 struct ieee80211_local;
  36
  37 /* Maximum number of broadcast/multicast frames to buffer when some of the
  38  * associated stations are using power saving. */
  39 #define AP_MAX_BC_BUFFER 128
  40
  41 /* Maximum number of frames buffered to all STAs, including multicast frames.
  42  * Note: increasing this limit increases the potential memory requirement. Each
  43  * frame can be up to about 2 kB long. */
  44 #define TOTAL_MAX_TX_BUFFER 512
  45
  46 /* Required encryption head and tailroom */
  47 #define IEEE80211_ENCRYPT_HEADROOM 8
  48 #define IEEE80211_ENCRYPT_TAILROOM 18
  49
  50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  51  * reception of at least three fragmented frames. This limit can be increased
  52  * by changing this define, at the cost of slower frame reassembly and
  53  * increased memory use (about 2 kB of RAM per entry). */
  54 #define IEEE80211_FRAGMENT_MAX 4
  55
  56 #define TU_TO_JIFFIES(x)        (usecs_to_jiffies((x) * 1024))
  57 #define TU_TO_EXP_TIME(x)       (jiffies + TU_TO_JIFFIES(x))
  58
  59 /*
  60  * Some APs experience problems when working with U-APSD. Decrease the
  61  * probability of that happening by using legacy mode for all ACs but VO.
  62  * The AP that caused us trouble was a Cisco 4410N. It ignores our
  63  * setting, and always treats non-VO ACs as legacy.
  64  */
  65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  66         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  67
  68 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  69         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  70
  71 struct ieee80211_fragment_entry {
  72         unsigned long first_frag_time;
  73         unsigned int seq;
  74         unsigned int rx_queue;
  75         unsigned int last_frag;
  76         unsigned int extra_len;
  77         struct sk_buff_head skb_list;
  78         int ccmp; /* Whether fragments were encrypted with CCMP */
  79         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  80 };
  81
  82
  83 struct ieee80211_bss {
  84         /* don't want to look up all the time */
  85         size_t ssid_len;
  86         u8 ssid[IEEE80211_MAX_SSID_LEN];
  87
  88         u32 device_ts;
  89
  90         u8 dtim_period;
  91
  92         bool wmm_used;
  93         bool uapsd_supported;
  94
  95         unsigned long last_probe_resp;
  96
  97 #ifdef CONFIG_MAC80211_MESH
  98         u8 *mesh_id;
  99         size_t mesh_id_len;
 100         u8 *mesh_cfg;
 101 #endif
 102
 103 #define IEEE80211_MAX_SUPP_RATES 32
 104         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 105         size_t supp_rates_len;
 106
 107         /*
 108          * During association, we save an ERP value from a probe response so
 109          * that we can feed ERP info to the driver when handling the
 110          * association completes. these fields probably won't be up-to-date
 111          * otherwise, you probably don't want to use them.
 112          */
 113         bool has_erp_value;
 114         u8 erp_value;
 115
 116         /* Keep track of the corruption of the last beacon/probe response. */
 117         u8 corrupt_data;
 118
 119         /* Keep track of what bits of information we have valid info for. */
 120         u8 valid_data;
 121 };
 122
 123 /**
 124  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 125  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 126  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 127  *
 128  * These are bss flags that are attached to a bss in the
 129  * @corrupt_data field of &struct ieee80211_bss.
 130  */
 131 enum ieee80211_bss_corrupt_data_flags {
 132         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 133         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 134 };
 135
 136 /**
 137  * enum ieee80211_valid_data_flags - BSS valid data flags
 138  * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE
 139  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 140  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 141  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 142  *
 143  * These are bss flags that are attached to a bss in the
 144  * @valid_data field of &struct ieee80211_bss.  They show which parts
 145  * of the data structure were recieved as a result of an un-corrupted
 146  * beacon/probe response.
 147  */
 148 enum ieee80211_bss_valid_data_flags {
 149         IEEE80211_BSS_VALID_DTIM                = BIT(0),
 150         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 151         IEEE80211_BSS_VALID_RATES               = BIT(2),
 152         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 153 };
 154
 155 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 156 {
 157 #ifdef CONFIG_MAC80211_MESH
 158         return bss->mesh_cfg;
 159 #endif
 160         return NULL;
 161 }
 162
 163 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 164 {
 165 #ifdef CONFIG_MAC80211_MESH
 166         return bss->mesh_id;
 167 #endif
 168         return NULL;
 169 }
 170
 171 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 172 {
 173 #ifdef CONFIG_MAC80211_MESH
 174         return bss->mesh_id_len;
 175 #endif
 176         return 0;
 177 }
 178
 179
 180 typedef unsigned __bitwise__ ieee80211_tx_result;
 181 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 182 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 183 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 184
 185 #define IEEE80211_TX_UNICAST            BIT(1)
 186 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 187
 188 struct ieee80211_tx_data {
 189         struct sk_buff *skb;
 190         struct sk_buff_head skbs;
 191         struct ieee80211_local *local;
 192         struct ieee80211_sub_if_data *sdata;
 193         struct sta_info *sta;
 194         struct ieee80211_key *key;
 195
 196         unsigned int flags;
 197 };
 198
 199
 200 typedef unsigned __bitwise__ ieee80211_rx_result;
 201 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 202 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 203 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 204 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 205
 206 /**
 207  * enum ieee80211_packet_rx_flags - packet RX flags
 208  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 209  *      (incl. multicast frames)
 210  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 211  * @IEEE80211_RX_AMSDU: a-MSDU packet
 212  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 213  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 214  *
 215  * These are per-frame flags that are attached to a frame in the
 216  * @rx_flags field of &struct ieee80211_rx_status.
 217  */
 218 enum ieee80211_packet_rx_flags {
 219         IEEE80211_RX_RA_MATCH                   = BIT(1),
 220         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 221         IEEE80211_RX_AMSDU                      = BIT(3),
 222         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 223         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 224 };
 225
 226 /**
 227  * enum ieee80211_rx_flags - RX data flags
 228  *
 229  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 230  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 231  *      to cfg80211_report_obss_beacon().
 232  *
 233  * These flags are used across handling multiple interfaces
 234  * for a single frame.
 235  */
 236 enum ieee80211_rx_flags {
 237         IEEE80211_RX_CMNTR              = BIT(0),
 238         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 239 };
 240
 241 struct ieee80211_rx_data {
 242         struct sk_buff *skb;
 243         struct ieee80211_local *local;
 244         struct ieee80211_sub_if_data *sdata;
 245         struct sta_info *sta;
 246         struct ieee80211_key *key;
 247
 248         unsigned int flags;
 249
 250         /*
 251          * Index into sequence numbers array, 0..16
 252          * since the last (16) is used for non-QoS,
 253          * will be 16 on non-QoS frames.
 254          */
 255         int seqno_idx;
 256
 257         /*
 258          * Index into the security IV/PN arrays, 0..16
 259          * since the last (16) is used for CCMP-encrypted
 260          * management frames, will be set to 16 on mgmt
 261          * frames and 0 on non-QoS frames.
 262          */
 263         int security_idx;
 264
 265         u32 tkip_iv32;
 266         u16 tkip_iv16;
 267 };
 268
 269 struct beacon_data {
 270         u8 *head, *tail;
 271         int head_len, tail_len;
 272         struct rcu_head rcu_head;
 273 };
 274
 275 struct probe_resp {
 276         struct rcu_head rcu_head;
 277         int len;
 278         u8 data[0];
 279 };
 280
 281 struct ieee80211_if_ap {
 282         struct beacon_data __rcu *beacon;
 283         struct probe_resp __rcu *probe_resp;
 284
 285         struct list_head vlans;
 286
 287         /* yes, this looks ugly, but guarantees that we can later use
 288          * bitmap_empty :)
 289          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 290         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 291         struct sk_buff_head ps_bc_buf;
 292         atomic_t num_sta_ps; /* number of stations in PS mode */
 293         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 294         int dtim_count;
 295         bool dtim_bc_mc;
 296 };
 297
 298 struct ieee80211_if_wds {
 299         struct sta_info *sta;
 300         u8 remote_addr[ETH_ALEN];
 301 };
 302
 303 struct ieee80211_if_vlan {
 304         struct list_head list;
 305
 306         /* used for all tx if the VLAN is configured to 4-addr mode */
 307         struct sta_info __rcu *sta;
 308 };
 309
 310 struct mesh_stats {
 311         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 312         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 313         __u32 fwded_frames;             /* Mesh total forwarded frames */
 314         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 315         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 316         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 317         atomic_t estab_plinks;
 318 };
 319
 320 #define PREQ_Q_F_START          0x1
 321 #define PREQ_Q_F_REFRESH        0x2
 322 struct mesh_preq_queue {
 323         struct list_head list;
 324         u8 dst[ETH_ALEN];
 325         u8 flags;
 326 };
 327
 328 #if HZ/100 == 0
 329 #define IEEE80211_ROC_MIN_LEFT  1
 330 #else
 331 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 332 #endif
 333
 334 struct ieee80211_roc_work {
 335         struct list_head list;
 336         struct list_head dependents;
 337
 338         struct delayed_work work;
 339
 340         struct ieee80211_sub_if_data *sdata;
 341
 342         struct ieee80211_channel *chan;
 343         enum nl80211_channel_type chan_type;
 344
 345         bool started, abort, hw_begun, notified;
 346
 347         unsigned long hw_start_time;
 348
 349         u32 duration, req_duration;
 350         struct sk_buff *frame;
 351         u64 mgmt_tx_cookie;
 352 };
 353
 354 /* flags used in struct ieee80211_if_managed.flags */
 355 enum ieee80211_sta_flags {
 356         IEEE80211_STA_BEACON_POLL       = BIT(0),
 357         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 358         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 359         IEEE80211_STA_DISABLE_11N       = BIT(4),
 360         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 361         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 362         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 363         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 364         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 365         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 366         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 367 };
 368
 369 struct ieee80211_mgd_auth_data {
 370         struct cfg80211_bss *bss;
 371         unsigned long timeout;
 372         int tries;
 373         u16 algorithm, expected_transaction;
 374
 375         u8 key[WLAN_KEY_LEN_WEP104];
 376         u8 key_len, key_idx;
 377         bool done;
 378
 379         size_t ie_len;
 380         u8 ie[];
 381 };
 382
 383 struct ieee80211_mgd_assoc_data {
 384         struct cfg80211_bss *bss;
 385         const u8 *supp_rates;
 386
 387         unsigned long timeout;
 388         int tries;
 389
 390         u16 capability;
 391         u8 prev_bssid[ETH_ALEN];
 392         u8 ssid[IEEE80211_MAX_SSID_LEN];
 393         u8 ssid_len;
 394         u8 supp_rates_len;
 395         bool wmm, uapsd;
 396         bool have_beacon;
 397         bool sent_assoc;
 398         bool synced;
 399
 400         u8 ap_ht_param;
 401
 402         size_t ie_len;
 403         u8 ie[];
 404 };
 405
 406 struct ieee80211_if_managed {
 407         struct timer_list timer;
 408         struct timer_list conn_mon_timer;
 409         struct timer_list bcn_mon_timer;
 410         struct timer_list chswitch_timer;
 411         struct work_struct monitor_work;
 412         struct work_struct chswitch_work;
 413         struct work_struct beacon_connection_loss_work;
 414
 415         unsigned long beacon_timeout;
 416         unsigned long probe_timeout;
 417         int probe_send_count;
 418         bool nullfunc_failed;
 419
 420         struct mutex mtx;
 421         struct cfg80211_bss *associated;
 422         struct ieee80211_mgd_auth_data *auth_data;
 423         struct ieee80211_mgd_assoc_data *assoc_data;
 424
 425         u8 bssid[ETH_ALEN];
 426
 427         u16 aid;
 428
 429         unsigned long timers_running; /* used for quiesce/restart */
 430         bool powersave; /* powersave requested for this iface */
 431         bool broken_ap; /* AP is broken -- turn off powersave */
 432         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 433                                  ap_smps, /* smps mode AP thinks we're in */
 434                                  driver_smps_mode; /* smps mode request */
 435
 436         struct work_struct request_smps_work;
 437
 438         unsigned int flags;
 439
 440         bool beacon_crc_valid;
 441         u32 beacon_crc;
 442
 443         enum {
 444                 IEEE80211_MFP_DISABLED,
 445                 IEEE80211_MFP_OPTIONAL,
 446                 IEEE80211_MFP_REQUIRED
 447         } mfp; /* management frame protection */
 448
 449         /*
 450          * Bitmask of enabled u-apsd queues,
 451          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 452          * to take effect.
 453          */
 454         unsigned int uapsd_queues;
 455
 456         /*
 457          * Maximum number of buffered frames AP can deliver during a
 458          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 459          * Needs a new association to take effect.
 460          */
 461         unsigned int uapsd_max_sp_len;
 462
 463         int wmm_last_param_set;
 464
 465         u8 use_4addr;
 466
 467         /* Signal strength from the last Beacon frame in the current BSS. */
 468         int last_beacon_signal;
 469
 470         /*
 471          * Weighted average of the signal strength from Beacon frames in the
 472          * current BSS. This is in units of 1/16 of the signal unit to maintain
 473          * accuracy and to speed up calculations, i.e., the value need to be
 474          * divided by 16 to get the actual value.
 475          */
 476         int ave_beacon_signal;
 477
 478         /*
 479          * Number of Beacon frames used in ave_beacon_signal. This can be used
 480          * to avoid generating less reliable cqm events that would be based
 481          * only on couple of received frames.
 482          */
 483         unsigned int count_beacon_signal;
 484
 485         /*
 486          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 487          * that triggered a cqm event. 0 indicates that no event has been
 488          * generated for the current association.
 489          */
 490         int last_cqm_event_signal;
 491
 492         /*
 493          * State variables for keeping track of RSSI of the AP currently
 494          * connected to and informing driver when RSSI has gone
 495          * below/above a certain threshold.
 496          */
 497         int rssi_min_thold, rssi_max_thold;
 498         int last_ave_beacon_signal;
 499
 500         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 501         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 502 };
 503
 504 struct ieee80211_if_ibss {
 505         struct timer_list timer;
 506
 507         struct mutex mtx;
 508
 509         unsigned long last_scan_completed;
 510
 511         u32 basic_rates;
 512
 513         bool timer_running;
 514
 515         bool fixed_bssid;
 516         bool fixed_channel;
 517         bool privacy;
 518
 519         bool control_port;
 520         unsigned int auth_frame_registrations;
 521
 522         u8 bssid[ETH_ALEN] __aligned(2);
 523         u8 ssid[IEEE80211_MAX_SSID_LEN];
 524         u8 ssid_len, ie_len;
 525         u8 *ie;
 526         struct ieee80211_channel *channel;
 527         enum nl80211_channel_type channel_type;
 528
 529         unsigned long ibss_join_req;
 530         /* probe response/beacon for IBSS */
 531         struct sk_buff __rcu *presp;
 532         struct sk_buff *skb;
 533
 534         spinlock_t incomplete_lock;
 535         struct list_head incomplete_stations;
 536
 537         enum {
 538                 IEEE80211_IBSS_MLME_SEARCH,
 539                 IEEE80211_IBSS_MLME_JOINED,
 540         } state;
 541 };
 542
 543 /**
 544  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 545  *
 546  * these declarations define the interface, which enables
 547  * vendor-specific mesh synchronization
 548  *
 549  */
 550 struct ieee802_11_elems;
 551 struct ieee80211_mesh_sync_ops {
 552         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 553                              u16 stype,
 554                              struct ieee80211_mgmt *mgmt,
 555                              struct ieee802_11_elems *elems,
 556                              struct ieee80211_rx_status *rx_status);
 557         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
 558         /* add other framework functions here */
 559 };
 560
 561 struct ieee80211_if_mesh {
 562         struct timer_list housekeeping_timer;
 563         struct timer_list mesh_path_timer;
 564         struct timer_list mesh_path_root_timer;
 565
 566         unsigned long timers_running;
 567
 568         unsigned long wrkq_flags;
 569
 570         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 571         size_t mesh_id_len;
 572         /* Active Path Selection Protocol Identifier */
 573         u8 mesh_pp_id;
 574         /* Active Path Selection Metric Identifier */
 575         u8 mesh_pm_id;
 576         /* Congestion Control Mode Identifier */
 577         u8 mesh_cc_id;
 578         /* Synchronization Protocol Identifier */
 579         u8 mesh_sp_id;
 580         /* Authentication Protocol Identifier */
 581         u8 mesh_auth_id;
 582         /* Local mesh Sequence Number */
 583         u32 sn;
 584         /* Last used PREQ ID */
 585         u32 preq_id;
 586         atomic_t mpaths;
 587         /* Timestamp of last SN update */
 588         unsigned long last_sn_update;
 589         /* Time when it's ok to send next PERR */
 590         unsigned long next_perr;
 591         /* Timestamp of last PREQ sent */
 592         unsigned long last_preq;
 593         struct mesh_rmc *rmc;
 594         spinlock_t mesh_preq_queue_lock;
 595         struct mesh_preq_queue preq_queue;
 596         int preq_queue_len;
 597         struct mesh_stats mshstats;
 598         struct mesh_config mshcfg;
 599         u32 mesh_seqnum;
 600         bool accepting_plinks;
 601         int num_gates;
 602         const u8 *ie;
 603         u8 ie_len;
 604         enum {
 605                 IEEE80211_MESH_SEC_NONE = 0x0,
 606                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 607                 IEEE80211_MESH_SEC_SECURED = 0x2,
 608         } security;
 609         /* Extensible Synchronization Framework */
 610         struct ieee80211_mesh_sync_ops *sync_ops;
 611         s64 sync_offset_clockdrift_max;
 612         spinlock_t sync_offset_lock;
 613         bool adjusting_tbtt;
 614 };
 615
 616 #ifdef CONFIG_MAC80211_MESH
 617 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 618         do { (msh)->mshstats.name++; } while (0)
 619 #else
 620 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 621         do { } while (0)
 622 #endif
 623
 624 /**
 625  * enum ieee80211_sub_if_data_flags - virtual interface flags
 626  *
 627  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 628  * @IEEE80211_SDATA_PROMISC: interface is promisc
 629  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 630  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 631  *      associated stations and deliver multicast frames both
 632  *      back to wireless media and to the local net stack.
 633  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 634  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 635  */
 636 enum ieee80211_sub_if_data_flags {
 637         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 638         IEEE80211_SDATA_PROMISC                 = BIT(1),
 639         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 640         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 641         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 642         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 643 };
 644
 645 /**
 646  * enum ieee80211_sdata_state_bits - virtual interface state bits
 647  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 648  *      mirrors netif_running() but is separate for interface type
 649  *      change handling while the interface is up
 650  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 651  *      mode, so queues are stopped
 652  */
 653 enum ieee80211_sdata_state_bits {
 654         SDATA_STATE_RUNNING,
 655         SDATA_STATE_OFFCHANNEL,
 656 };
 657
 658 struct ieee80211_sub_if_data {
 659         struct list_head list;
 660
 661         struct wireless_dev wdev;
 662
 663         /* keys */
 664         struct list_head key_list;
 665
 666         /* count for keys needing tailroom space allocation */
 667         int crypto_tx_tailroom_needed_cnt;
 668
 669         struct net_device *dev;
 670         struct ieee80211_local *local;
 671
 672         unsigned int flags;
 673
 674         unsigned long state;
 675
 676         int drop_unencrypted;
 677
 678         char name[IFNAMSIZ];
 679
 680         /* to detect idle changes */
 681         bool old_idle;
 682
 683         /* Fragment table for host-based reassembly */
 684         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 685         unsigned int fragment_next;
 686
 687         /* TID bitmap for NoAck policy */
 688         u16 noack_map;
 689
 690         /* bit field of ACM bits (BIT(802.1D tag)) */
 691         u8 wmm_acm;
 692
 693         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 694         struct ieee80211_key __rcu *default_unicast_key;
 695         struct ieee80211_key __rcu *default_multicast_key;
 696         struct ieee80211_key __rcu *default_mgmt_key;
 697
 698         u16 sequence_number;
 699         __be16 control_port_protocol;
 700         bool control_port_no_encrypt;
 701
 702         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 703
 704         struct work_struct work;
 705         struct sk_buff_head skb_queue;
 706
 707         bool arp_filter_state;
 708
 709         /*
 710          * AP this belongs to: self in AP mode and
 711          * corresponding AP in VLAN mode, NULL for
 712          * all others (might be needed later in IBSS)
 713          */
 714         struct ieee80211_if_ap *bss;
 715
 716         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 717         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 718         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 719
 720         union {
 721                 struct ieee80211_if_ap ap;
 722                 struct ieee80211_if_wds wds;
 723                 struct ieee80211_if_vlan vlan;
 724                 struct ieee80211_if_managed mgd;
 725                 struct ieee80211_if_ibss ibss;
 726                 struct ieee80211_if_mesh mesh;
 727                 u32 mntr_flags;
 728         } u;
 729
 730 #ifdef CONFIG_MAC80211_DEBUGFS
 731         struct {
 732                 struct dentry *dir;
 733                 struct dentry *subdir_stations;
 734                 struct dentry *default_unicast_key;
 735                 struct dentry *default_multicast_key;
 736                 struct dentry *default_mgmt_key;
 737         } debugfs;
 738 #endif
 739         /* must be last, dynamically sized area in this! */
 740         struct ieee80211_vif vif;
 741 };
 742
 743 static inline
 744 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 745 {
 746         return container_of(p, struct ieee80211_sub_if_data, vif);
 747 }
 748
 749 enum sdata_queue_type {
 750         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 751         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 752         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 753 };
 754
 755 enum {
 756         IEEE80211_RX_MSG        = 1,
 757         IEEE80211_TX_STATUS_MSG = 2,
 758         IEEE80211_EOSP_MSG      = 3,
 759 };
 760
 761 struct skb_eosp_msg_data {
 762         u8 sta[ETH_ALEN], iface[ETH_ALEN];
 763 };
 764
 765 enum queue_stop_reason {
 766         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 767         IEEE80211_QUEUE_STOP_REASON_PS,
 768         IEEE80211_QUEUE_STOP_REASON_CSA,
 769         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 770         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 771         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 772 };
 773
 774 #ifdef CONFIG_MAC80211_LEDS
 775 struct tpt_led_trigger {
 776         struct led_trigger trig;
 777         char name[32];
 778         const struct ieee80211_tpt_blink *blink_table;
 779         unsigned int blink_table_len;
 780         struct timer_list timer;
 781         unsigned long prev_traffic;
 782         unsigned long tx_bytes, rx_bytes;
 783         unsigned int active, want;
 784         bool running;
 785 };
 786 #endif
 787
 788 /**
 789  * mac80211 scan flags - currently active scan mode
 790  *
 791  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 792  *      well be on the operating channel
 793  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 794  *      determine if we are on the operating channel or not
 795  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
 796  *      channel. This should not interrupt normal traffic.
 797  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 798  *      that the scan completed.
 799  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 800  *      a scan complete for an aborted scan.
 801  */
 802 enum {
 803         SCAN_SW_SCANNING,
 804         SCAN_HW_SCANNING,
 805         SCAN_ONCHANNEL_SCANNING,
 806         SCAN_COMPLETED,
 807         SCAN_ABORTED,
 808 };
 809
 810 /**
 811  * enum mac80211_scan_state - scan state machine states
 812  *
 813  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 814  *      determines if we should keep on scanning or switch back to the
 815  *      operating channel
 816  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 817  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 818  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 819  *      send out data
 820  * @SCAN_RESUME: Resume the scan and scan the next channel
 821  */
 822 enum mac80211_scan_state {
 823         SCAN_DECISION,
 824         SCAN_SET_CHANNEL,
 825         SCAN_SEND_PROBE,
 826         SCAN_SUSPEND,
 827         SCAN_RESUME,
 828 };
 829
 830 struct ieee80211_local {
 831         /* embed the driver visible part.
 832          * don't cast (use the static inlines below), but we keep
 833          * it first anyway so they become a no-op */
 834         struct ieee80211_hw hw;
 835
 836         const struct ieee80211_ops *ops;
 837
 838         /*
 839          * private workqueue to mac80211. mac80211 makes this accessible
 840          * via ieee80211_queue_work()
 841          */
 842         struct workqueue_struct *workqueue;
 843
 844         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 845         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 846         spinlock_t queue_stop_reason_lock;
 847
 848         int open_count;
 849         int monitors, cooked_mntrs;
 850         /* number of interfaces with corresponding FIF_ flags */
 851         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 852             fif_probe_req;
 853         int probe_req_reg;
 854         unsigned int filter_flags; /* FIF_* */
 855
 856         bool wiphy_ciphers_allocated;
 857
 858         /* protects the aggregated multicast list and filter calls */
 859         spinlock_t filter_lock;
 860
 861         /* used for uploading changed mc list */
 862         struct work_struct reconfig_filter;
 863
 864         /* used to reconfigure hardware SM PS */
 865         struct work_struct recalc_smps;
 866
 867         /* aggregated multicast list */
 868         struct netdev_hw_addr_list mc_list;
 869
 870         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 871
 872         /*
 873          * suspended is true if we finished all the suspend _and_ we have
 874          * not yet come up from resume. This is to be used by mac80211
 875          * to ensure driver sanity during suspend and mac80211's own
 876          * sanity. It can eventually be used for WoW as well.
 877          */
 878         bool suspended;
 879
 880         /*
 881          * Resuming is true while suspended, but when we're reprogramming the
 882          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 883          * again even though some other parts of the stack are still suspended
 884          * and we still drop received frames to avoid waking the stack.
 885          */
 886         bool resuming;
 887
 888         /*
 889          * quiescing is true during the suspend process _only_ to
 890          * ease timer cancelling etc.
 891          */
 892         bool quiescing;
 893
 894         /* device is started */
 895         bool started;
 896
 897         /* device is during a HW reconfig */
 898         bool in_reconfig;
 899
 900         /* wowlan is enabled -- don't reconfig on resume */
 901         bool wowlan;
 902
 903         int tx_headroom; /* required headroom for hardware/radiotap */
 904
 905         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 906          * added to skb_queue will be processed, but frames in
 907          * skb_queue_unreliable may be dropped if the total length of these
 908          * queues increases over the limit. */
 909 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 910         struct tasklet_struct tasklet;
 911         struct sk_buff_head skb_queue;
 912         struct sk_buff_head skb_queue_unreliable;
 913
 914         /*
 915          * Internal FIFO queue which is shared between multiple rx path
 916          * stages. Its main task is to provide a serialization mechanism,
 917          * so all rx handlers can enjoy having exclusive access to their
 918          * private data structures.
 919          */
 920         struct sk_buff_head rx_skb_queue;
 921         bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 922
 923         /* Station data */
 924         /*
 925          * The mutex only protects the list, hash table and
 926          * counter, reads are done with RCU.
 927          */
 928         struct mutex sta_mtx;
 929         spinlock_t tim_lock;
 930         unsigned long num_sta;
 931         struct list_head sta_list;
 932         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
 933         struct timer_list sta_cleanup;
 934         int sta_generation;
 935
 936         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 937         struct tasklet_struct tx_pending_tasklet;
 938
 939         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 940
 941         /* number of interfaces with corresponding IFF_ flags */
 942         atomic_t iff_allmultis, iff_promiscs;
 943
 944         struct rate_control_ref *rate_ctrl;
 945
 946         struct crypto_cipher *wep_tx_tfm;
 947         struct crypto_cipher *wep_rx_tfm;
 948         u32 wep_iv;
 949
 950         /* see iface.c */
 951         struct list_head interfaces;
 952         struct mutex iflist_mtx;
 953
 954         /*
 955          * Key mutex, protects sdata's key_list and sta_info's
 956          * key pointers (write access, they're RCU.)
 957          */
 958         struct mutex key_mtx;
 959
 960         /* mutex for scan and work locking */
 961         struct mutex mtx;
 962
 963         /* Scanning and BSS list */
 964         unsigned long scanning;
 965         struct cfg80211_ssid scan_ssid;
 966         struct cfg80211_scan_request *int_scan_req;
 967         struct cfg80211_scan_request *scan_req, *hw_scan_req;
 968         struct ieee80211_channel *scan_channel;
 969         enum ieee80211_band hw_scan_band;
 970         int scan_channel_idx;
 971         int scan_ies_len;
 972
 973         struct ieee80211_sched_scan_ies sched_scan_ies;
 974         struct work_struct sched_scan_stopped_work;
 975         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
 976
 977         unsigned long leave_oper_channel_time;
 978         enum mac80211_scan_state next_scan_state;
 979         struct delayed_work scan_work;
 980         struct ieee80211_sub_if_data __rcu *scan_sdata;
 981         enum nl80211_channel_type _oper_channel_type;
 982         struct ieee80211_channel *oper_channel, *csa_channel;
 983
 984         /* Temporary remain-on-channel for off-channel operations */
 985         struct ieee80211_channel *tmp_channel;
 986         enum nl80211_channel_type tmp_channel_type;
 987
 988         /* SNMP counters */
 989         /* dot11CountersTable */
 990         u32 dot11TransmittedFragmentCount;
 991         u32 dot11MulticastTransmittedFrameCount;
 992         u32 dot11FailedCount;
 993         u32 dot11RetryCount;
 994         u32 dot11MultipleRetryCount;
 995         u32 dot11FrameDuplicateCount;
 996         u32 dot11ReceivedFragmentCount;
 997         u32 dot11MulticastReceivedFrameCount;
 998         u32 dot11TransmittedFrameCount;
 999
1000 #ifdef CONFIG_MAC80211_LEDS
1001         int tx_led_counter, rx_led_counter;
1002         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1003         struct tpt_led_trigger *tpt_led_trigger;
1004         char tx_led_name[32], rx_led_name[32],
1005              assoc_led_name[32], radio_led_name[32];
1006 #endif
1007
1008 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1009         /* TX/RX handler statistics */
1010         unsigned int tx_handlers_drop;
1011         unsigned int tx_handlers_queued;
1012         unsigned int tx_handlers_drop_unencrypted;
1013         unsigned int tx_handlers_drop_fragment;
1014         unsigned int tx_handlers_drop_wep;
1015         unsigned int tx_handlers_drop_not_assoc;
1016         unsigned int tx_handlers_drop_unauth_port;
1017         unsigned int rx_handlers_drop;
1018         unsigned int rx_handlers_queued;
1019         unsigned int rx_handlers_drop_nullfunc;
1020         unsigned int rx_handlers_drop_defrag;
1021         unsigned int rx_handlers_drop_short;
1022         unsigned int tx_expand_skb_head;
1023         unsigned int tx_expand_skb_head_cloned;
1024         unsigned int rx_expand_skb_head;
1025         unsigned int rx_expand_skb_head2;
1026         unsigned int rx_handlers_fragments;
1027         unsigned int tx_status_drop;
1028 #define I802_DEBUG_INC(c) (c)++
1029 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1030 #define I802_DEBUG_INC(c) do { } while (0)
1031 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1032
1033
1034         int total_ps_buffered; /* total number of all buffered unicast and
1035                                 * multicast packets for power saving stations
1036                                 */
1037
1038         bool pspolling;
1039         bool offchannel_ps_enabled;
1040         /*
1041          * PS can only be enabled when we have exactly one managed
1042          * interface (and monitors) in PS, this then points there.
1043          */
1044         struct ieee80211_sub_if_data *ps_sdata;
1045         struct work_struct dynamic_ps_enable_work;
1046         struct work_struct dynamic_ps_disable_work;
1047         struct timer_list dynamic_ps_timer;
1048         struct notifier_block network_latency_notifier;
1049         struct notifier_block ifa_notifier;
1050
1051         /*
1052          * The dynamic ps timeout configured from user space via WEXT -
1053          * this will override whatever chosen by mac80211 internally.
1054          */
1055         int dynamic_ps_forced_timeout;
1056         int dynamic_ps_user_timeout;
1057         bool disable_dynamic_ps;
1058
1059         int user_power_level; /* in dBm */
1060         int power_constr_level; /* in dBm */
1061
1062         enum ieee80211_smps_mode smps_mode;
1063
1064         struct work_struct restart_work;
1065
1066 #ifdef CONFIG_MAC80211_DEBUGFS
1067         struct local_debugfsdentries {
1068                 struct dentry *rcdir;
1069                 struct dentry *keys;
1070         } debugfs;
1071 #endif
1072
1073         /*
1074          * Remain-on-channel support
1075          */
1076         struct list_head roc_list;
1077         struct work_struct hw_roc_start, hw_roc_done;
1078         unsigned long hw_roc_start_time;
1079
1080         struct idr ack_status_frames;
1081         spinlock_t ack_status_lock;
1082
1083         /* dummy netdev for use w/ NAPI */
1084         struct net_device napi_dev;
1085
1086         struct napi_struct napi;
1087
1088         /* virtual monitor interface */
1089         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1090 };
1091
1092 static inline struct ieee80211_sub_if_data *
1093 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1094 {
1095         return netdev_priv(dev);
1096 }
1097
1098 static inline struct ieee80211_sub_if_data *
1099 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1100 {
1101         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1102 }
1103
1104 /* this struct represents 802.11n's RA/TID combination */
1105 struct ieee80211_ra_tid {
1106         u8 ra[ETH_ALEN];
1107         u16 tid;
1108 };
1109
1110 /* Parsed Information Elements */
1111 struct ieee802_11_elems {
1112         u8 *ie_start;
1113         size_t total_len;
1114
1115         /* pointers to IEs */
1116         u8 *ssid;
1117         u8 *supp_rates;
1118         u8 *fh_params;
1119         u8 *ds_params;
1120         u8 *cf_params;
1121         struct ieee80211_tim_ie *tim;
1122         u8 *ibss_params;
1123         u8 *challenge;
1124         u8 *wpa;
1125         u8 *rsn;
1126         u8 *erp_info;
1127         u8 *ext_supp_rates;
1128         u8 *wmm_info;
1129         u8 *wmm_param;
1130         struct ieee80211_ht_cap *ht_cap_elem;
1131         struct ieee80211_ht_operation *ht_operation;
1132         struct ieee80211_meshconf_ie *mesh_config;
1133         u8 *mesh_id;
1134         u8 *peering;
1135         u8 *preq;
1136         u8 *prep;
1137         u8 *perr;
1138         struct ieee80211_rann_ie *rann;
1139         u8 *ch_switch_elem;
1140         u8 *country_elem;
1141         u8 *pwr_constr_elem;
1142         u8 *quiet_elem; /* first quite element */
1143         u8 *timeout_int;
1144
1145         /* length of them, respectively */
1146         u8 ssid_len;
1147         u8 supp_rates_len;
1148         u8 fh_params_len;
1149         u8 ds_params_len;
1150         u8 cf_params_len;
1151         u8 tim_len;
1152         u8 ibss_params_len;
1153         u8 challenge_len;
1154         u8 wpa_len;
1155         u8 rsn_len;
1156         u8 erp_info_len;
1157         u8 ext_supp_rates_len;
1158         u8 wmm_info_len;
1159         u8 wmm_param_len;
1160         u8 mesh_id_len;
1161         u8 peering_len;
1162         u8 preq_len;
1163         u8 prep_len;
1164         u8 perr_len;
1165         u8 ch_switch_elem_len;
1166         u8 country_elem_len;
1167         u8 pwr_constr_elem_len;
1168         u8 quiet_elem_len;
1169         u8 num_of_quiet_elem;   /* can be more the one */
1170         u8 timeout_int_len;
1171
1172         /* whether a parse error occurred while retrieving these elements */
1173         bool parse_error;
1174 };
1175
1176 static inline struct ieee80211_local *hw_to_local(
1177         struct ieee80211_hw *hw)
1178 {
1179         return container_of(hw, struct ieee80211_local, hw);
1180 }
1181
1182
1183 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1184 {
1185         return ether_addr_equal(raddr, addr) ||
1186                is_broadcast_ether_addr(raddr);
1187 }
1188
1189
1190 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1191 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1192 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1193                                       u32 changed);
1194 void ieee80211_configure_filter(struct ieee80211_local *local);
1195 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1196
1197 /* STA code */
1198 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1199 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1200                        struct cfg80211_auth_request *req);
1201 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1202                         struct cfg80211_assoc_request *req);
1203 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1204                          struct cfg80211_deauth_request *req);
1205 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1206                            struct cfg80211_disassoc_request *req);
1207 void ieee80211_send_pspoll(struct ieee80211_local *local,
1208                            struct ieee80211_sub_if_data *sdata);
1209 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1210 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1211 int ieee80211_max_network_latency(struct notifier_block *nb,
1212                                   unsigned long data, void *dummy);
1213 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1214 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1215                                       struct ieee80211_channel_sw_ie *sw_elem,
1216                                       struct ieee80211_bss *bss,
1217                                       u64 timestamp);
1218 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1219 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1220 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1221 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1222                                   struct sk_buff *skb);
1223 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1224 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1225 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1226
1227 /* IBSS code */
1228 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1229 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1230 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1231                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1232 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1233                         struct cfg80211_ibss_params *params);
1234 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1235 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1236 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1237 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1238 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1239                                    struct sk_buff *skb);
1240
1241 /* mesh code */
1242 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1243 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1244                                    struct sk_buff *skb);
1245
1246 /* scan/BSS handling */
1247 void ieee80211_scan_work(struct work_struct *work);
1248 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1249                                     const u8 *ssid, u8 ssid_len,
1250                                     struct ieee80211_channel *chan);
1251 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1252                            struct cfg80211_scan_request *req);
1253 void ieee80211_scan_cancel(struct ieee80211_local *local);
1254 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1255 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1256
1257 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1258 struct ieee80211_bss *
1259 ieee80211_bss_info_update(struct ieee80211_local *local,
1260                           struct ieee80211_rx_status *rx_status,
1261                           struct ieee80211_mgmt *mgmt,
1262                           size_t len,
1263                           struct ieee802_11_elems *elems,
1264                           struct ieee80211_channel *channel,
1265                           bool beacon);
1266 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1267                           struct ieee80211_bss *bss);
1268
1269 /* scheduled scan handling */
1270 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1271                                        struct cfg80211_sched_scan_request *req);
1272 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1273 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1274
1275 /* off-channel helpers */
1276 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1277                                     bool offchannel_ps_enable);
1278 void ieee80211_offchannel_return(struct ieee80211_local *local,
1279                                  bool offchannel_ps_disable);
1280 void ieee80211_roc_setup(struct ieee80211_local *local);
1281 void ieee80211_start_next_roc(struct ieee80211_local *local);
1282 void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata);
1283 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc);
1284 void ieee80211_sw_roc_work(struct work_struct *work);
1285 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1286
1287 /* interface handling */
1288 int ieee80211_iface_init(void);
1289 void ieee80211_iface_exit(void);
1290 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1291                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1292                      struct vif_params *params);
1293 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1294                              enum nl80211_iftype type);
1295 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1296 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1297 void ieee80211_recalc_idle(struct ieee80211_local *local);
1298 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1299                                     const int offset);
1300
1301 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1302 {
1303         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1304 }
1305
1306 /* tx handling */
1307 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1308 void ieee80211_tx_pending(unsigned long data);
1309 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1310                                          struct net_device *dev);
1311 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1312                                        struct net_device *dev);
1313
1314 /* HT */
1315 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1316                                      struct ieee80211_sta_ht_cap *ht_cap);
1317 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1318                                        struct ieee80211_supported_band *sband,
1319                                        struct ieee80211_ht_cap *ht_cap_ie,
1320                                        struct ieee80211_sta_ht_cap *ht_cap);
1321 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1322                           const u8 *da, u16 tid,
1323                           u16 initiator, u16 reason_code);
1324 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1325                                enum ieee80211_smps_mode smps, const u8 *da,
1326                                const u8 *bssid);
1327 void ieee80211_request_smps_work(struct work_struct *work);
1328
1329 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1330                                      u16 initiator, u16 reason, bool stop);
1331 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1332                                     u16 initiator, u16 reason, bool stop);
1333 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1334 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1335                              struct sta_info *sta,
1336                              struct ieee80211_mgmt *mgmt, size_t len);
1337 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1338                                   struct sta_info *sta,
1339                                   struct ieee80211_mgmt *mgmt,
1340                                   size_t len);
1341 void ieee80211_process_addba_request(struct ieee80211_local *local,
1342                                      struct sta_info *sta,
1343                                      struct ieee80211_mgmt *mgmt,
1344                                      size_t len);
1345
1346 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1347                                    enum ieee80211_back_parties initiator,
1348                                    bool tx);
1349 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1350                                     enum ieee80211_back_parties initiator,
1351                                     bool tx);
1352 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1353 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1354 void ieee80211_ba_session_work(struct work_struct *work);
1355 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1356 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1357
1358 /* Spectrum management */
1359 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1360                                        struct ieee80211_mgmt *mgmt,
1361                                        size_t len);
1362
1363 /* Suspend/resume and hw reconfiguration */
1364 int ieee80211_reconfig(struct ieee80211_local *local);
1365 void ieee80211_stop_device(struct ieee80211_local *local);
1366
1367 #ifdef CONFIG_PM
1368 int __ieee80211_suspend(struct ieee80211_hw *hw,
1369                         struct cfg80211_wowlan *wowlan);
1370
1371 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1372 {
1373         struct ieee80211_local *local = hw_to_local(hw);
1374
1375         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1376                 "%s: resume with hardware scan still in progress\n",
1377                 wiphy_name(hw->wiphy));
1378
1379         return ieee80211_reconfig(hw_to_local(hw));
1380 }
1381 #else
1382 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1383                                       struct cfg80211_wowlan *wowlan)
1384 {
1385         return 0;
1386 }
1387
1388 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1389 {
1390         return 0;
1391 }
1392 #endif
1393
1394 /* utility functions/constants */
1395 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1396 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1397                         enum nl80211_iftype type);
1398 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1399                              int rate, int erp, int short_preamble);
1400 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1401                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1402                                      gfp_t gfp);
1403 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1404                                bool bss_notify);
1405 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1406
1407 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1408                           struct sk_buff *skb, int tid);
1409 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1410                                     struct sk_buff *skb)
1411 {
1412         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1413         ieee80211_tx_skb_tid(sdata, skb, 7);
1414 }
1415
1416 void ieee802_11_parse_elems(u8 *start, size_t len,
1417                             struct ieee802_11_elems *elems);
1418 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1419                                struct ieee802_11_elems *elems,
1420                                u64 filter, u32 crc);
1421 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1422                               enum ieee80211_band band);
1423
1424 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1425 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1426 void ieee80211_dynamic_ps_timer(unsigned long data);
1427 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1428                              struct ieee80211_sub_if_data *sdata,
1429                              int powersave);
1430 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1431                              struct ieee80211_hdr *hdr);
1432 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1433                              struct ieee80211_hdr *hdr, bool ack);
1434 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1435
1436 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1437                                      enum queue_stop_reason reason);
1438 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1439                                      enum queue_stop_reason reason);
1440 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1441                                     enum queue_stop_reason reason);
1442 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1443                                     enum queue_stop_reason reason);
1444 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1445 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1446                                struct sk_buff *skb);
1447 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1448                                    struct sk_buff_head *skbs,
1449                                    void (*fn)(void *data), void *data);
1450 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1451                                               struct sk_buff_head *skbs)
1452 {
1453         ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1454 }
1455
1456 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1457                          u16 transaction, u16 auth_alg,
1458                          u8 *extra, size_t extra_len, const u8 *bssid,
1459                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
1460 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1461                              const u8 *ie, size_t ie_len,
1462                              enum ieee80211_band band, u32 rate_mask,
1463                              u8 channel);
1464 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1465                                           u8 *dst, u32 ratemask,
1466                                           struct ieee80211_channel *chan,
1467                                           const u8 *ssid, size_t ssid_len,
1468                                           const u8 *ie, size_t ie_len,
1469                                           bool directed);
1470 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1471                               const u8 *ssid, size_t ssid_len,
1472                               const u8 *ie, size_t ie_len,
1473                               u32 ratemask, bool directed, bool no_cck);
1474
1475 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1476                                   const size_t supp_rates_len,
1477                                   const u8 *supp_rates);
1478 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1479                             struct ieee802_11_elems *elems,
1480                             enum ieee80211_band band, u32 *basic_rates);
1481 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1482                              enum ieee80211_smps_mode smps_mode);
1483 void ieee80211_recalc_smps(struct ieee80211_local *local);
1484
1485 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1486                           const u8 *ids, int n_ids, size_t offset);
1487 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1488 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1489                               u16 cap);
1490 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1491                                struct ieee80211_channel *channel,
1492                                enum nl80211_channel_type channel_type,
1493                                u16 prot_mode);
1494 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1495                                u32 cap);
1496 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1497                             struct sk_buff *skb, bool need_basic,
1498                             enum ieee80211_band band);
1499 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1500                                 struct sk_buff *skb, bool need_basic,
1501                                 enum ieee80211_band band);
1502
1503 /* channel management */
1504 enum ieee80211_chan_mode {
1505         CHAN_MODE_UNDEFINED,
1506         CHAN_MODE_HOPPING,
1507         CHAN_MODE_FIXED,
1508 };
1509
1510 enum ieee80211_chan_mode
1511 ieee80211_get_channel_mode(struct ieee80211_local *local,
1512                            struct ieee80211_sub_if_data *ignore);
1513 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1514                                 struct ieee80211_sub_if_data *sdata,
1515                                 enum nl80211_channel_type chantype);
1516 enum nl80211_channel_type
1517 ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper);
1518
1519 #ifdef CONFIG_MAC80211_NOINLINE
1520 #define debug_noinline noinline
1521 #else
1522 #define debug_noinline
1523 #endif
1524
1525 #endif /* IEEE80211_I_H */