linux/net/mac80211/ieee80211_i.h
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   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
  35struct 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#define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  72
  73struct ieee80211_fragment_entry {
  74        unsigned long first_frag_time;
  75        unsigned int seq;
  76        unsigned int rx_queue;
  77        unsigned int last_frag;
  78        unsigned int extra_len;
  79        struct sk_buff_head skb_list;
  80        int ccmp; /* Whether fragments were encrypted with CCMP */
  81        u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  82};
  83
  84
  85struct ieee80211_bss {
  86        /* don't want to look up all the time */
  87        size_t ssid_len;
  88        u8 ssid[IEEE80211_MAX_SSID_LEN];
  89
  90        u32 device_ts;
  91
  92        u8 dtim_period;
  93
  94        bool wmm_used;
  95        bool uapsd_supported;
  96
  97        unsigned long last_probe_resp;
  98
  99#ifdef CONFIG_MAC80211_MESH
 100        u8 *mesh_id;
 101        size_t mesh_id_len;
 102        u8 *mesh_cfg;
 103#endif
 104
 105#define IEEE80211_MAX_SUPP_RATES 32
 106        u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 107        size_t supp_rates_len;
 108
 109        /*
 110         * During association, we save an ERP value from a probe response so
 111         * that we can feed ERP info to the driver when handling the
 112         * association completes. these fields probably won't be up-to-date
 113         * otherwise, you probably don't want to use them.
 114         */
 115        bool has_erp_value;
 116        u8 erp_value;
 117
 118        /* Keep track of the corruption of the last beacon/probe response. */
 119        u8 corrupt_data;
 120
 121        /* Keep track of what bits of information we have valid info for. */
 122        u8 valid_data;
 123};
 124
 125/**
 126 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 127 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 128 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 129 *
 130 * These are bss flags that are attached to a bss in the
 131 * @corrupt_data field of &struct ieee80211_bss.
 132 */
 133enum ieee80211_bss_corrupt_data_flags {
 134        IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 135        IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 136};
 137
 138/**
 139 * enum ieee80211_valid_data_flags - BSS valid data flags
 140 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE
 141 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 142 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 143 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 144 *
 145 * These are bss flags that are attached to a bss in the
 146 * @valid_data field of &struct ieee80211_bss.  They show which parts
 147 * of the data structure were recieved as a result of an un-corrupted
 148 * beacon/probe response.
 149 */
 150enum ieee80211_bss_valid_data_flags {
 151        IEEE80211_BSS_VALID_DTIM                = BIT(0),
 152        IEEE80211_BSS_VALID_WMM                 = BIT(1),
 153        IEEE80211_BSS_VALID_RATES               = BIT(2),
 154        IEEE80211_BSS_VALID_ERP                 = BIT(3)
 155};
 156
 157static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 158{
 159#ifdef CONFIG_MAC80211_MESH
 160        return bss->mesh_cfg;
 161#endif
 162        return NULL;
 163}
 164
 165static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 166{
 167#ifdef CONFIG_MAC80211_MESH
 168        return bss->mesh_id;
 169#endif
 170        return NULL;
 171}
 172
 173static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 174{
 175#ifdef CONFIG_MAC80211_MESH
 176        return bss->mesh_id_len;
 177#endif
 178        return 0;
 179}
 180
 181
 182typedef unsigned __bitwise__ ieee80211_tx_result;
 183#define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 184#define TX_DROP         ((__force ieee80211_tx_result) 1u)
 185#define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 186
 187#define IEEE80211_TX_UNICAST            BIT(1)
 188#define IEEE80211_TX_PS_BUFFERED        BIT(2)
 189
 190struct ieee80211_tx_data {
 191        struct sk_buff *skb;
 192        struct sk_buff_head skbs;
 193        struct ieee80211_local *local;
 194        struct ieee80211_sub_if_data *sdata;
 195        struct sta_info *sta;
 196        struct ieee80211_key *key;
 197
 198        unsigned int flags;
 199};
 200
 201
 202typedef unsigned __bitwise__ ieee80211_rx_result;
 203#define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 204#define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 205#define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 206#define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 207
 208/**
 209 * enum ieee80211_packet_rx_flags - packet RX flags
 210 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 211 *      (incl. multicast frames)
 212 * @IEEE80211_RX_FRAGMENTED: fragmented frame
 213 * @IEEE80211_RX_AMSDU: a-MSDU packet
 214 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 215 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 216 *
 217 * These are per-frame flags that are attached to a frame in the
 218 * @rx_flags field of &struct ieee80211_rx_status.
 219 */
 220enum ieee80211_packet_rx_flags {
 221        IEEE80211_RX_RA_MATCH                   = BIT(1),
 222        IEEE80211_RX_FRAGMENTED                 = BIT(2),
 223        IEEE80211_RX_AMSDU                      = BIT(3),
 224        IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 225        IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 226};
 227
 228/**
 229 * enum ieee80211_rx_flags - RX data flags
 230 *
 231 * @IEEE80211_RX_CMNTR: received on cooked monitor already
 232 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 233 *      to cfg80211_report_obss_beacon().
 234 *
 235 * These flags are used across handling multiple interfaces
 236 * for a single frame.
 237 */
 238enum ieee80211_rx_flags {
 239        IEEE80211_RX_CMNTR              = BIT(0),
 240        IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 241};
 242
 243struct ieee80211_rx_data {
 244        struct sk_buff *skb;
 245        struct ieee80211_local *local;
 246        struct ieee80211_sub_if_data *sdata;
 247        struct sta_info *sta;
 248        struct ieee80211_key *key;
 249
 250        unsigned int flags;
 251
 252        /*
 253         * Index into sequence numbers array, 0..16
 254         * since the last (16) is used for non-QoS,
 255         * will be 16 on non-QoS frames.
 256         */
 257        int seqno_idx;
 258
 259        /*
 260         * Index into the security IV/PN arrays, 0..16
 261         * since the last (16) is used for CCMP-encrypted
 262         * management frames, will be set to 16 on mgmt
 263         * frames and 0 on non-QoS frames.
 264         */
 265        int security_idx;
 266
 267        u32 tkip_iv32;
 268        u16 tkip_iv16;
 269};
 270
 271struct beacon_data {
 272        u8 *head, *tail;
 273        int head_len, tail_len;
 274        struct rcu_head rcu_head;
 275};
 276
 277struct probe_resp {
 278        struct rcu_head rcu_head;
 279        int len;
 280        u8 data[0];
 281};
 282
 283struct ieee80211_if_ap {
 284        struct beacon_data __rcu *beacon;
 285        struct probe_resp __rcu *probe_resp;
 286
 287        struct list_head vlans;
 288
 289        /* yes, this looks ugly, but guarantees that we can later use
 290         * bitmap_empty :)
 291         * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 292        u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 293        struct sk_buff_head ps_bc_buf;
 294        atomic_t num_sta_ps; /* number of stations in PS mode */
 295        atomic_t num_mcast_sta; /* number of stations receiving multicast */
 296        int dtim_count;
 297        bool dtim_bc_mc;
 298};
 299
 300struct ieee80211_if_wds {
 301        struct sta_info *sta;
 302        u8 remote_addr[ETH_ALEN];
 303};
 304
 305struct ieee80211_if_vlan {
 306        struct list_head list;
 307
 308        /* used for all tx if the VLAN is configured to 4-addr mode */
 309        struct sta_info __rcu *sta;
 310};
 311
 312struct mesh_stats {
 313        __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 314        __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 315        __u32 fwded_frames;             /* Mesh total forwarded frames */
 316        __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 317        __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 318        __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 319        atomic_t estab_plinks;
 320};
 321
 322#define PREQ_Q_F_START          0x1
 323#define PREQ_Q_F_REFRESH        0x2
 324struct mesh_preq_queue {
 325        struct list_head list;
 326        u8 dst[ETH_ALEN];
 327        u8 flags;
 328};
 329
 330#if HZ/100 == 0
 331#define IEEE80211_ROC_MIN_LEFT  1
 332#else
 333#define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 334#endif
 335
 336struct ieee80211_roc_work {
 337        struct list_head list;
 338        struct list_head dependents;
 339
 340        struct delayed_work work;
 341
 342        struct ieee80211_sub_if_data *sdata;
 343
 344        struct ieee80211_channel *chan;
 345        enum nl80211_channel_type chan_type;
 346
 347        bool started, abort, hw_begun, notified;
 348
 349        unsigned long hw_start_time;
 350
 351        u32 duration, req_duration;
 352        struct sk_buff *frame;
 353        u64 mgmt_tx_cookie;
 354};
 355
 356/* flags used in struct ieee80211_if_managed.flags */
 357enum ieee80211_sta_flags {
 358        IEEE80211_STA_BEACON_POLL       = BIT(0),
 359        IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 360        IEEE80211_STA_CONTROL_PORT      = BIT(2),
 361        IEEE80211_STA_DISABLE_11N       = BIT(4),
 362        IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 363        IEEE80211_STA_MFP_ENABLED       = BIT(6),
 364        IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 365        IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 366        IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 367        IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 368        IEEE80211_STA_DISABLE_VHT       = BIT(11),
 369};
 370
 371struct ieee80211_mgd_auth_data {
 372        struct cfg80211_bss *bss;
 373        unsigned long timeout;
 374        int tries;
 375        u16 algorithm, expected_transaction;
 376
 377        u8 key[WLAN_KEY_LEN_WEP104];
 378        u8 key_len, key_idx;
 379        bool done;
 380
 381        size_t ie_len;
 382        u8 ie[];
 383};
 384
 385struct ieee80211_mgd_assoc_data {
 386        struct cfg80211_bss *bss;
 387        const u8 *supp_rates;
 388
 389        unsigned long timeout;
 390        int tries;
 391
 392        u16 capability;
 393        u8 prev_bssid[ETH_ALEN];
 394        u8 ssid[IEEE80211_MAX_SSID_LEN];
 395        u8 ssid_len;
 396        u8 supp_rates_len;
 397        bool wmm, uapsd;
 398        bool have_beacon;
 399        bool sent_assoc;
 400        bool synced;
 401
 402        u8 ap_ht_param;
 403
 404        size_t ie_len;
 405        u8 ie[];
 406};
 407
 408struct ieee80211_if_managed {
 409        struct timer_list timer;
 410        struct timer_list conn_mon_timer;
 411        struct timer_list bcn_mon_timer;
 412        struct timer_list chswitch_timer;
 413        struct work_struct monitor_work;
 414        struct work_struct chswitch_work;
 415        struct work_struct beacon_connection_loss_work;
 416        struct work_struct csa_connection_drop_work;
 417
 418        unsigned long beacon_timeout;
 419        unsigned long probe_timeout;
 420        int probe_send_count;
 421        bool nullfunc_failed;
 422
 423        struct mutex mtx;
 424        struct cfg80211_bss *associated;
 425        struct ieee80211_mgd_auth_data *auth_data;
 426        struct ieee80211_mgd_assoc_data *assoc_data;
 427
 428        u8 bssid[ETH_ALEN];
 429
 430        u16 aid;
 431
 432        unsigned long timers_running; /* used for quiesce/restart */
 433        bool powersave; /* powersave requested for this iface */
 434        bool broken_ap; /* AP is broken -- turn off powersave */
 435        enum ieee80211_smps_mode req_smps, /* requested smps mode */
 436                                 ap_smps, /* smps mode AP thinks we're in */
 437                                 driver_smps_mode; /* smps mode request */
 438
 439        struct work_struct request_smps_work;
 440
 441        unsigned int flags;
 442
 443        bool beacon_crc_valid;
 444        u32 beacon_crc;
 445
 446        enum {
 447                IEEE80211_MFP_DISABLED,
 448                IEEE80211_MFP_OPTIONAL,
 449                IEEE80211_MFP_REQUIRED
 450        } mfp; /* management frame protection */
 451
 452        /*
 453         * Bitmask of enabled u-apsd queues,
 454         * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 455         * to take effect.
 456         */
 457        unsigned int uapsd_queues;
 458
 459        /*
 460         * Maximum number of buffered frames AP can deliver during a
 461         * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 462         * Needs a new association to take effect.
 463         */
 464        unsigned int uapsd_max_sp_len;
 465
 466        int wmm_last_param_set;
 467
 468        u8 use_4addr;
 469
 470        /* Signal strength from the last Beacon frame in the current BSS. */
 471        int last_beacon_signal;
 472
 473        /*
 474         * Weighted average of the signal strength from Beacon frames in the
 475         * current BSS. This is in units of 1/16 of the signal unit to maintain
 476         * accuracy and to speed up calculations, i.e., the value need to be
 477         * divided by 16 to get the actual value.
 478         */
 479        int ave_beacon_signal;
 480
 481        /*
 482         * Number of Beacon frames used in ave_beacon_signal. This can be used
 483         * to avoid generating less reliable cqm events that would be based
 484         * only on couple of received frames.
 485         */
 486        unsigned int count_beacon_signal;
 487
 488        /*
 489         * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 490         * that triggered a cqm event. 0 indicates that no event has been
 491         * generated for the current association.
 492         */
 493        int last_cqm_event_signal;
 494
 495        /*
 496         * State variables for keeping track of RSSI of the AP currently
 497         * connected to and informing driver when RSSI has gone
 498         * below/above a certain threshold.
 499         */
 500        int rssi_min_thold, rssi_max_thold;
 501        int last_ave_beacon_signal;
 502
 503        struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 504        struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 505};
 506
 507struct ieee80211_if_ibss {
 508        struct timer_list timer;
 509
 510        struct mutex mtx;
 511
 512        unsigned long last_scan_completed;
 513
 514        u32 basic_rates;
 515
 516        bool timer_running;
 517
 518        bool fixed_bssid;
 519        bool fixed_channel;
 520        bool privacy;
 521
 522        bool control_port;
 523        unsigned int auth_frame_registrations;
 524
 525        u8 bssid[ETH_ALEN] __aligned(2);
 526        u8 ssid[IEEE80211_MAX_SSID_LEN];
 527        u8 ssid_len, ie_len;
 528        u8 *ie;
 529        struct ieee80211_channel *channel;
 530        enum nl80211_channel_type channel_type;
 531
 532        unsigned long ibss_join_req;
 533        /* probe response/beacon for IBSS */
 534        struct sk_buff __rcu *presp;
 535        struct sk_buff *skb;
 536
 537        spinlock_t incomplete_lock;
 538        struct list_head incomplete_stations;
 539
 540        enum {
 541                IEEE80211_IBSS_MLME_SEARCH,
 542                IEEE80211_IBSS_MLME_JOINED,
 543        } state;
 544};
 545
 546/**
 547 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 548 *
 549 * these declarations define the interface, which enables
 550 * vendor-specific mesh synchronization
 551 *
 552 */
 553struct ieee802_11_elems;
 554struct ieee80211_mesh_sync_ops {
 555        void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 556                             u16 stype,
 557                             struct ieee80211_mgmt *mgmt,
 558                             struct ieee802_11_elems *elems,
 559                             struct ieee80211_rx_status *rx_status);
 560        void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
 561        /* add other framework functions here */
 562};
 563
 564struct ieee80211_if_mesh {
 565        struct timer_list housekeeping_timer;
 566        struct timer_list mesh_path_timer;
 567        struct timer_list mesh_path_root_timer;
 568
 569        unsigned long timers_running;
 570
 571        unsigned long wrkq_flags;
 572
 573        u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 574        size_t mesh_id_len;
 575        /* Active Path Selection Protocol Identifier */
 576        u8 mesh_pp_id;
 577        /* Active Path Selection Metric Identifier */
 578        u8 mesh_pm_id;
 579        /* Congestion Control Mode Identifier */
 580        u8 mesh_cc_id;
 581        /* Synchronization Protocol Identifier */
 582        u8 mesh_sp_id;
 583        /* Authentication Protocol Identifier */
 584        u8 mesh_auth_id;
 585        /* Local mesh Sequence Number */
 586        u32 sn;
 587        /* Last used PREQ ID */
 588        u32 preq_id;
 589        atomic_t mpaths;
 590        /* Timestamp of last SN update */
 591        unsigned long last_sn_update;
 592        /* Time when it's ok to send next PERR */
 593        unsigned long next_perr;
 594        /* Timestamp of last PREQ sent */
 595        unsigned long last_preq;
 596        struct mesh_rmc *rmc;
 597        spinlock_t mesh_preq_queue_lock;
 598        struct mesh_preq_queue preq_queue;
 599        int preq_queue_len;
 600        struct mesh_stats mshstats;
 601        struct mesh_config mshcfg;
 602        u32 mesh_seqnum;
 603        bool accepting_plinks;
 604        int num_gates;
 605        const u8 *ie;
 606        u8 ie_len;
 607        enum {
 608                IEEE80211_MESH_SEC_NONE = 0x0,
 609                IEEE80211_MESH_SEC_AUTHED = 0x1,
 610                IEEE80211_MESH_SEC_SECURED = 0x2,
 611        } security;
 612        /* Extensible Synchronization Framework */
 613        struct ieee80211_mesh_sync_ops *sync_ops;
 614        s64 sync_offset_clockdrift_max;
 615        spinlock_t sync_offset_lock;
 616        bool adjusting_tbtt;
 617};
 618
 619#ifdef CONFIG_MAC80211_MESH
 620#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 621        do { (msh)->mshstats.name++; } while (0)
 622#else
 623#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 624        do { } while (0)
 625#endif
 626
 627/**
 628 * enum ieee80211_sub_if_data_flags - virtual interface flags
 629 *
 630 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 631 * @IEEE80211_SDATA_PROMISC: interface is promisc
 632 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 633 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 634 *      associated stations and deliver multicast frames both
 635 *      back to wireless media and to the local net stack.
 636 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 637 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 638 */
 639enum ieee80211_sub_if_data_flags {
 640        IEEE80211_SDATA_ALLMULTI                = BIT(0),
 641        IEEE80211_SDATA_PROMISC                 = BIT(1),
 642        IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 643        IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 644        IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 645        IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 646};
 647
 648/**
 649 * enum ieee80211_sdata_state_bits - virtual interface state bits
 650 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 651 *      mirrors netif_running() but is separate for interface type
 652 *      change handling while the interface is up
 653 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 654 *      mode, so queues are stopped
 655 */
 656enum ieee80211_sdata_state_bits {
 657        SDATA_STATE_RUNNING,
 658        SDATA_STATE_OFFCHANNEL,
 659};
 660
 661struct ieee80211_sub_if_data {
 662        struct list_head list;
 663
 664        struct wireless_dev wdev;
 665
 666        /* keys */
 667        struct list_head key_list;
 668
 669        /* count for keys needing tailroom space allocation */
 670        int crypto_tx_tailroom_needed_cnt;
 671
 672        struct net_device *dev;
 673        struct ieee80211_local *local;
 674
 675        unsigned int flags;
 676
 677        unsigned long state;
 678
 679        int drop_unencrypted;
 680
 681        char name[IFNAMSIZ];
 682
 683        /* to detect idle changes */
 684        bool old_idle;
 685
 686        /* Fragment table for host-based reassembly */
 687        struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 688        unsigned int fragment_next;
 689
 690        /* TID bitmap for NoAck policy */
 691        u16 noack_map;
 692
 693        /* bit field of ACM bits (BIT(802.1D tag)) */
 694        u8 wmm_acm;
 695
 696        struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 697        struct ieee80211_key __rcu *default_unicast_key;
 698        struct ieee80211_key __rcu *default_multicast_key;
 699        struct ieee80211_key __rcu *default_mgmt_key;
 700
 701        u16 sequence_number;
 702        __be16 control_port_protocol;
 703        bool control_port_no_encrypt;
 704
 705        struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 706
 707        struct work_struct work;
 708        struct sk_buff_head skb_queue;
 709
 710        bool arp_filter_state;
 711
 712        /*
 713         * AP this belongs to: self in AP mode and
 714         * corresponding AP in VLAN mode, NULL for
 715         * all others (might be needed later in IBSS)
 716         */
 717        struct ieee80211_if_ap *bss;
 718
 719        /* bitmap of allowed (non-MCS) rate indexes for rate control */
 720        u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 721        u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 722
 723        union {
 724                struct ieee80211_if_ap ap;
 725                struct ieee80211_if_wds wds;
 726                struct ieee80211_if_vlan vlan;
 727                struct ieee80211_if_managed mgd;
 728                struct ieee80211_if_ibss ibss;
 729                struct ieee80211_if_mesh mesh;
 730                u32 mntr_flags;
 731        } u;
 732
 733#ifdef CONFIG_MAC80211_DEBUGFS
 734        struct {
 735                struct dentry *dir;
 736                struct dentry *subdir_stations;
 737                struct dentry *default_unicast_key;
 738                struct dentry *default_multicast_key;
 739                struct dentry *default_mgmt_key;
 740        } debugfs;
 741#endif
 742        /* must be last, dynamically sized area in this! */
 743        struct ieee80211_vif vif;
 744};
 745
 746static inline
 747struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 748{
 749        return container_of(p, struct ieee80211_sub_if_data, vif);
 750}
 751
 752enum sdata_queue_type {
 753        IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 754        IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 755        IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 756};
 757
 758enum {
 759        IEEE80211_RX_MSG        = 1,
 760        IEEE80211_TX_STATUS_MSG = 2,
 761        IEEE80211_EOSP_MSG      = 3,
 762};
 763
 764struct skb_eosp_msg_data {
 765        u8 sta[ETH_ALEN], iface[ETH_ALEN];
 766};
 767
 768enum queue_stop_reason {
 769        IEEE80211_QUEUE_STOP_REASON_DRIVER,
 770        IEEE80211_QUEUE_STOP_REASON_PS,
 771        IEEE80211_QUEUE_STOP_REASON_CSA,
 772        IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 773        IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 774        IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 775};
 776
 777#ifdef CONFIG_MAC80211_LEDS
 778struct tpt_led_trigger {
 779        struct led_trigger trig;
 780        char name[32];
 781        const struct ieee80211_tpt_blink *blink_table;
 782        unsigned int blink_table_len;
 783        struct timer_list timer;
 784        unsigned long prev_traffic;
 785        unsigned long tx_bytes, rx_bytes;
 786        unsigned int active, want;
 787        bool running;
 788};
 789#endif
 790
 791/**
 792 * mac80211 scan flags - currently active scan mode
 793 *
 794 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 795 *      well be on the operating channel
 796 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 797 *      determine if we are on the operating channel or not
 798 * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
 799 *      channel. This should not interrupt normal traffic.
 800 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 801 *      that the scan completed.
 802 * @SCAN_ABORTED: Set for our scan work function when the driver reported
 803 *      a scan complete for an aborted scan.
 804 */
 805enum {
 806        SCAN_SW_SCANNING,
 807        SCAN_HW_SCANNING,
 808        SCAN_ONCHANNEL_SCANNING,
 809        SCAN_COMPLETED,
 810        SCAN_ABORTED,
 811};
 812
 813/**
 814 * enum mac80211_scan_state - scan state machine states
 815 *
 816 * @SCAN_DECISION: Main entry point to the scan state machine, this state
 817 *      determines if we should keep on scanning or switch back to the
 818 *      operating channel
 819 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 820 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 821 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 822 *      send out data
 823 * @SCAN_RESUME: Resume the scan and scan the next channel
 824 */
 825enum mac80211_scan_state {
 826        SCAN_DECISION,
 827        SCAN_SET_CHANNEL,
 828        SCAN_SEND_PROBE,
 829        SCAN_SUSPEND,
 830        SCAN_RESUME,
 831};
 832
 833struct ieee80211_local {
 834        /* embed the driver visible part.
 835         * don't cast (use the static inlines below), but we keep
 836         * it first anyway so they become a no-op */
 837        struct ieee80211_hw hw;
 838
 839        const struct ieee80211_ops *ops;
 840
 841        /*
 842         * private workqueue to mac80211. mac80211 makes this accessible
 843         * via ieee80211_queue_work()
 844         */
 845        struct workqueue_struct *workqueue;
 846
 847        unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 848        /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 849        spinlock_t queue_stop_reason_lock;
 850
 851        int open_count;
 852        int monitors, cooked_mntrs;
 853        /* number of interfaces with corresponding FIF_ flags */
 854        int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 855            fif_probe_req;
 856        int probe_req_reg;
 857        unsigned int filter_flags; /* FIF_* */
 858
 859        bool wiphy_ciphers_allocated;
 860
 861        /* protects the aggregated multicast list and filter calls */
 862        spinlock_t filter_lock;
 863
 864        /* used for uploading changed mc list */
 865        struct work_struct reconfig_filter;
 866
 867        /* used to reconfigure hardware SM PS */
 868        struct work_struct recalc_smps;
 869
 870        /* aggregated multicast list */
 871        struct netdev_hw_addr_list mc_list;
 872
 873        bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 874
 875        /*
 876         * suspended is true if we finished all the suspend _and_ we have
 877         * not yet come up from resume. This is to be used by mac80211
 878         * to ensure driver sanity during suspend and mac80211's own
 879         * sanity. It can eventually be used for WoW as well.
 880         */
 881        bool suspended;
 882
 883        /*
 884         * Resuming is true while suspended, but when we're reprogramming the
 885         * hardware -- at that time it's allowed to use ieee80211_queue_work()
 886         * again even though some other parts of the stack are still suspended
 887         * and we still drop received frames to avoid waking the stack.
 888         */
 889        bool resuming;
 890
 891        /*
 892         * quiescing is true during the suspend process _only_ to
 893         * ease timer cancelling etc.
 894         */
 895        bool quiescing;
 896
 897        /* device is started */
 898        bool started;
 899
 900        /* device is during a HW reconfig */
 901        bool in_reconfig;
 902
 903        /* wowlan is enabled -- don't reconfig on resume */
 904        bool wowlan;
 905
 906        int tx_headroom; /* required headroom for hardware/radiotap */
 907
 908        /* Tasklet and skb queue to process calls from IRQ mode. All frames
 909         * added to skb_queue will be processed, but frames in
 910         * skb_queue_unreliable may be dropped if the total length of these
 911         * queues increases over the limit. */
 912#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 913        struct tasklet_struct tasklet;
 914        struct sk_buff_head skb_queue;
 915        struct sk_buff_head skb_queue_unreliable;
 916
 917        /*
 918         * Internal FIFO queue which is shared between multiple rx path
 919         * stages. Its main task is to provide a serialization mechanism,
 920         * so all rx handlers can enjoy having exclusive access to their
 921         * private data structures.
 922         */
 923        struct sk_buff_head rx_skb_queue;
 924        bool running_rx_handler;        /* protected by rx_skb_queue.lock */
 925
 926        /* Station data */
 927        /*
 928         * The mutex only protects the list, hash table and
 929         * counter, reads are done with RCU.
 930         */
 931        struct mutex sta_mtx;
 932        spinlock_t tim_lock;
 933        unsigned long num_sta;
 934        struct list_head sta_list;
 935        struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
 936        struct timer_list sta_cleanup;
 937        int sta_generation;
 938
 939        struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 940        struct tasklet_struct tx_pending_tasklet;
 941
 942        atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
 943
 944        /* number of interfaces with corresponding IFF_ flags */
 945        atomic_t iff_allmultis, iff_promiscs;
 946
 947        struct rate_control_ref *rate_ctrl;
 948
 949        struct crypto_cipher *wep_tx_tfm;
 950        struct crypto_cipher *wep_rx_tfm;
 951        u32 wep_iv;
 952
 953        /* see iface.c */
 954        struct list_head interfaces;
 955        struct mutex iflist_mtx;
 956
 957        /*
 958         * Key mutex, protects sdata's key_list and sta_info's
 959         * key pointers (write access, they're RCU.)
 960         */
 961        struct mutex key_mtx;
 962
 963        /* mutex for scan and work locking */
 964        struct mutex mtx;
 965
 966        /* Scanning and BSS list */
 967        unsigned long scanning;
 968        struct cfg80211_ssid scan_ssid;
 969        struct cfg80211_scan_request *int_scan_req;
 970        struct cfg80211_scan_request *scan_req, *hw_scan_req;
 971        struct ieee80211_channel *scan_channel;
 972        enum ieee80211_band hw_scan_band;
 973        int scan_channel_idx;
 974        int scan_ies_len;
 975
 976        struct work_struct sched_scan_stopped_work;
 977        struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
 978
 979        unsigned long leave_oper_channel_time;
 980        enum mac80211_scan_state next_scan_state;
 981        struct delayed_work scan_work;
 982        struct ieee80211_sub_if_data __rcu *scan_sdata;
 983        enum nl80211_channel_type _oper_channel_type;
 984        struct ieee80211_channel *oper_channel, *csa_channel;
 985
 986        /* Temporary remain-on-channel for off-channel operations */
 987        struct ieee80211_channel *tmp_channel;
 988        enum nl80211_channel_type tmp_channel_type;
 989
 990        /* SNMP counters */
 991        /* dot11CountersTable */
 992        u32 dot11TransmittedFragmentCount;
 993        u32 dot11MulticastTransmittedFrameCount;
 994        u32 dot11FailedCount;
 995        u32 dot11RetryCount;
 996        u32 dot11MultipleRetryCount;
 997        u32 dot11FrameDuplicateCount;
 998        u32 dot11ReceivedFragmentCount;
 999        u32 dot11MulticastReceivedFrameCount;
1000        u32 dot11TransmittedFrameCount;
1001
1002#ifdef CONFIG_MAC80211_LEDS
1003        int tx_led_counter, rx_led_counter;
1004        struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1005        struct tpt_led_trigger *tpt_led_trigger;
1006        char tx_led_name[32], rx_led_name[32],
1007             assoc_led_name[32], radio_led_name[32];
1008#endif
1009
1010#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1011        /* TX/RX handler statistics */
1012        unsigned int tx_handlers_drop;
1013        unsigned int tx_handlers_queued;
1014        unsigned int tx_handlers_drop_unencrypted;
1015        unsigned int tx_handlers_drop_fragment;
1016        unsigned int tx_handlers_drop_wep;
1017        unsigned int tx_handlers_drop_not_assoc;
1018        unsigned int tx_handlers_drop_unauth_port;
1019        unsigned int rx_handlers_drop;
1020        unsigned int rx_handlers_queued;
1021        unsigned int rx_handlers_drop_nullfunc;
1022        unsigned int rx_handlers_drop_defrag;
1023        unsigned int rx_handlers_drop_short;
1024        unsigned int tx_expand_skb_head;
1025        unsigned int tx_expand_skb_head_cloned;
1026        unsigned int rx_expand_skb_head;
1027        unsigned int rx_expand_skb_head2;
1028        unsigned int rx_handlers_fragments;
1029        unsigned int tx_status_drop;
1030#define I802_DEBUG_INC(c) (c)++
1031#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1032#define I802_DEBUG_INC(c) do { } while (0)
1033#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1034
1035
1036        int total_ps_buffered; /* total number of all buffered unicast and
1037                                * multicast packets for power saving stations
1038                                */
1039
1040        bool pspolling;
1041        bool offchannel_ps_enabled;
1042        /*
1043         * PS can only be enabled when we have exactly one managed
1044         * interface (and monitors) in PS, this then points there.
1045         */
1046        struct ieee80211_sub_if_data *ps_sdata;
1047        struct work_struct dynamic_ps_enable_work;
1048        struct work_struct dynamic_ps_disable_work;
1049        struct timer_list dynamic_ps_timer;
1050        struct notifier_block network_latency_notifier;
1051        struct notifier_block ifa_notifier;
1052
1053        /*
1054         * The dynamic ps timeout configured from user space via WEXT -
1055         * this will override whatever chosen by mac80211 internally.
1056         */
1057        int dynamic_ps_forced_timeout;
1058        int dynamic_ps_user_timeout;
1059        bool disable_dynamic_ps;
1060
1061        int user_power_level; /* in dBm */
1062        int ap_power_level; /* in dBm */
1063
1064        enum ieee80211_smps_mode smps_mode;
1065
1066        struct work_struct restart_work;
1067
1068#ifdef CONFIG_MAC80211_DEBUGFS
1069        struct local_debugfsdentries {
1070                struct dentry *rcdir;
1071                struct dentry *keys;
1072        } debugfs;
1073#endif
1074
1075        /*
1076         * Remain-on-channel support
1077         */
1078        struct list_head roc_list;
1079        struct work_struct hw_roc_start, hw_roc_done;
1080        unsigned long hw_roc_start_time;
1081
1082        struct idr ack_status_frames;
1083        spinlock_t ack_status_lock;
1084
1085        struct ieee80211_sub_if_data __rcu *p2p_sdata;
1086
1087        /* dummy netdev for use w/ NAPI */
1088        struct net_device napi_dev;
1089
1090        struct napi_struct napi;
1091
1092        /* virtual monitor interface */
1093        struct ieee80211_sub_if_data __rcu *monitor_sdata;
1094};
1095
1096static inline struct ieee80211_sub_if_data *
1097IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1098{
1099        return netdev_priv(dev);
1100}
1101
1102static inline struct ieee80211_sub_if_data *
1103IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1104{
1105        return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1106}
1107
1108/* this struct represents 802.11n's RA/TID combination */
1109struct ieee80211_ra_tid {
1110        u8 ra[ETH_ALEN];
1111        u16 tid;
1112};
1113
1114/* Parsed Information Elements */
1115struct ieee802_11_elems {
1116        u8 *ie_start;
1117        size_t total_len;
1118
1119        /* pointers to IEs */
1120        u8 *ssid;
1121        u8 *supp_rates;
1122        u8 *fh_params;
1123        u8 *ds_params;
1124        u8 *cf_params;
1125        struct ieee80211_tim_ie *tim;
1126        u8 *ibss_params;
1127        u8 *challenge;
1128        u8 *wpa;
1129        u8 *rsn;
1130        u8 *erp_info;
1131        u8 *ext_supp_rates;
1132        u8 *wmm_info;
1133        u8 *wmm_param;
1134        struct ieee80211_ht_cap *ht_cap_elem;
1135        struct ieee80211_ht_operation *ht_operation;
1136        struct ieee80211_meshconf_ie *mesh_config;
1137        u8 *mesh_id;
1138        u8 *peering;
1139        u8 *preq;
1140        u8 *prep;
1141        u8 *perr;
1142        struct ieee80211_rann_ie *rann;
1143        struct ieee80211_channel_sw_ie *ch_switch_ie;
1144        u8 *country_elem;
1145        u8 *pwr_constr_elem;
1146        u8 *quiet_elem; /* first quite element */
1147        u8 *timeout_int;
1148
1149        /* length of them, respectively */
1150        u8 ssid_len;
1151        u8 supp_rates_len;
1152        u8 fh_params_len;
1153        u8 ds_params_len;
1154        u8 cf_params_len;
1155        u8 tim_len;
1156        u8 ibss_params_len;
1157        u8 challenge_len;
1158        u8 wpa_len;
1159        u8 rsn_len;
1160        u8 erp_info_len;
1161        u8 ext_supp_rates_len;
1162        u8 wmm_info_len;
1163        u8 wmm_param_len;
1164        u8 mesh_id_len;
1165        u8 peering_len;
1166        u8 preq_len;
1167        u8 prep_len;
1168        u8 perr_len;
1169        u8 country_elem_len;
1170        u8 quiet_elem_len;
1171        u8 num_of_quiet_elem;   /* can be more the one */
1172        u8 timeout_int_len;
1173
1174        /* whether a parse error occurred while retrieving these elements */
1175        bool parse_error;
1176};
1177
1178static inline struct ieee80211_local *hw_to_local(
1179        struct ieee80211_hw *hw)
1180{
1181        return container_of(hw, struct ieee80211_local, hw);
1182}
1183
1184
1185static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1186{
1187        return ether_addr_equal(raddr, addr) ||
1188               is_broadcast_ether_addr(raddr);
1189}
1190
1191
1192int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1193void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1194void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1195                                      u32 changed);
1196void ieee80211_configure_filter(struct ieee80211_local *local);
1197u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1198
1199/* STA code */
1200void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1201int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1202                       struct cfg80211_auth_request *req);
1203int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1204                        struct cfg80211_assoc_request *req);
1205int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1206                         struct cfg80211_deauth_request *req);
1207int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1208                           struct cfg80211_disassoc_request *req);
1209void ieee80211_send_pspoll(struct ieee80211_local *local,
1210                           struct ieee80211_sub_if_data *sdata);
1211void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1212void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1213int ieee80211_max_network_latency(struct notifier_block *nb,
1214                                  unsigned long data, void *dummy);
1215int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1216void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1217                                      struct ieee80211_channel_sw_ie *sw_elem,
1218                                      struct ieee80211_bss *bss,
1219                                      u64 timestamp);
1220void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1221void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1222void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1223void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1224                                  struct sk_buff *skb);
1225void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1226void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1227void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1228
1229/* IBSS code */
1230void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1231void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1232void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1233                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1234int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1235                        struct cfg80211_ibss_params *params);
1236int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1237void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1238void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1239void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1240void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1241                                   struct sk_buff *skb);
1242
1243/* mesh code */
1244void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1245void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1246                                   struct sk_buff *skb);
1247
1248/* scan/BSS handling */
1249void ieee80211_scan_work(struct work_struct *work);
1250int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1251                                    const u8 *ssid, u8 ssid_len,
1252                                    struct ieee80211_channel *chan);
1253int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1254                           struct cfg80211_scan_request *req);
1255void ieee80211_scan_cancel(struct ieee80211_local *local);
1256void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1257void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1258
1259void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1260struct ieee80211_bss *
1261ieee80211_bss_info_update(struct ieee80211_local *local,
1262                          struct ieee80211_rx_status *rx_status,
1263                          struct ieee80211_mgmt *mgmt,
1264                          size_t len,
1265                          struct ieee802_11_elems *elems,
1266                          struct ieee80211_channel *channel,
1267                          bool beacon);
1268void ieee80211_rx_bss_put(struct ieee80211_local *local,
1269                          struct ieee80211_bss *bss);
1270
1271/* scheduled scan handling */
1272int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1273                                       struct cfg80211_sched_scan_request *req);
1274int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1275void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1276
1277/* off-channel helpers */
1278void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1279                                    bool offchannel_ps_enable);
1280void ieee80211_offchannel_return(struct ieee80211_local *local,
1281                                 bool offchannel_ps_disable);
1282void ieee80211_roc_setup(struct ieee80211_local *local);
1283void ieee80211_start_next_roc(struct ieee80211_local *local);
1284void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata);
1285void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc);
1286void ieee80211_sw_roc_work(struct work_struct *work);
1287void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1288
1289/* interface handling */
1290int ieee80211_iface_init(void);
1291void ieee80211_iface_exit(void);
1292int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1293                     struct wireless_dev **new_wdev, enum nl80211_iftype type,
1294                     struct vif_params *params);
1295int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1296                             enum nl80211_iftype type);
1297void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1298void ieee80211_remove_interfaces(struct ieee80211_local *local);
1299void ieee80211_recalc_idle(struct ieee80211_local *local);
1300void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1301                                    const int offset);
1302int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1303void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1304
1305static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1306{
1307        return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1308}
1309
1310/* tx handling */
1311void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1312void ieee80211_tx_pending(unsigned long data);
1313netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1314                                         struct net_device *dev);
1315netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1316                                       struct net_device *dev);
1317void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1318                              struct sk_buff_head *skbs);
1319
1320/* HT */
1321void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1322                                     struct ieee80211_sta_ht_cap *ht_cap);
1323void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1324                                       struct ieee80211_supported_band *sband,
1325                                       struct ieee80211_ht_cap *ht_cap_ie,
1326                                       struct ieee80211_sta_ht_cap *ht_cap);
1327void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1328                          const u8 *da, u16 tid,
1329                          u16 initiator, u16 reason_code);
1330int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1331                               enum ieee80211_smps_mode smps, const u8 *da,
1332                               const u8 *bssid);
1333void ieee80211_request_smps_work(struct work_struct *work);
1334
1335void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1336                                     u16 initiator, u16 reason, bool stop);
1337void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1338                                    u16 initiator, u16 reason, bool stop);
1339void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1340void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1341                             struct sta_info *sta,
1342                             struct ieee80211_mgmt *mgmt, size_t len);
1343void ieee80211_process_addba_resp(struct ieee80211_local *local,
1344                                  struct sta_info *sta,
1345                                  struct ieee80211_mgmt *mgmt,
1346                                  size_t len);
1347void ieee80211_process_addba_request(struct ieee80211_local *local,
1348                                     struct sta_info *sta,
1349                                     struct ieee80211_mgmt *mgmt,
1350                                     size_t len);
1351
1352int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1353                                   enum ieee80211_back_parties initiator,
1354                                   bool tx);
1355int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1356                                    enum ieee80211_back_parties initiator,
1357                                    bool tx);
1358void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1359void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1360void ieee80211_ba_session_work(struct work_struct *work);
1361void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1362void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1363
1364/* Spectrum management */
1365void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1366                                       struct ieee80211_mgmt *mgmt,
1367                                       size_t len);
1368
1369/* Suspend/resume and hw reconfiguration */
1370int ieee80211_reconfig(struct ieee80211_local *local);
1371void ieee80211_stop_device(struct ieee80211_local *local);
1372
1373int __ieee80211_suspend(struct ieee80211_hw *hw,
1374                        struct cfg80211_wowlan *wowlan);
1375
1376static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1377{
1378        struct ieee80211_local *local = hw_to_local(hw);
1379
1380        WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1381                "%s: resume with hardware scan still in progress\n",
1382                wiphy_name(hw->wiphy));
1383
1384        return ieee80211_reconfig(hw_to_local(hw));
1385}
1386
1387/* utility functions/constants */
1388extern void *mac80211_wiphy_privid; /* for wiphy privid */
1389u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1390                        enum nl80211_iftype type);
1391int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1392                             int rate, int erp, int short_preamble);
1393void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1394                                     struct ieee80211_hdr *hdr, const u8 *tsc,
1395                                     gfp_t gfp);
1396void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1397                               bool bss_notify);
1398void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1399
1400void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1401                          struct sk_buff *skb, int tid);
1402static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1403                                    struct sk_buff *skb)
1404{
1405        /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1406        ieee80211_tx_skb_tid(sdata, skb, 7);
1407}
1408
1409void ieee802_11_parse_elems(u8 *start, size_t len,
1410                            struct ieee802_11_elems *elems);
1411u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1412                               struct ieee802_11_elems *elems,
1413                               u64 filter, u32 crc);
1414u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1415                              enum ieee80211_band band);
1416
1417void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1418void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1419void ieee80211_dynamic_ps_timer(unsigned long data);
1420void ieee80211_send_nullfunc(struct ieee80211_local *local,
1421                             struct ieee80211_sub_if_data *sdata,
1422                             int powersave);
1423void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1424                             struct ieee80211_hdr *hdr);
1425void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1426                             struct ieee80211_hdr *hdr, bool ack);
1427
1428void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1429                                     enum queue_stop_reason reason);
1430void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1431                                     enum queue_stop_reason reason);
1432void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1433                                    enum queue_stop_reason reason);
1434void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1435                                    enum queue_stop_reason reason);
1436void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1437void ieee80211_add_pending_skb(struct ieee80211_local *local,
1438                               struct sk_buff *skb);
1439void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1440                                   struct sk_buff_head *skbs,
1441                                   void (*fn)(void *data), void *data);
1442static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1443                                              struct sk_buff_head *skbs)
1444{
1445        ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1446}
1447
1448void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1449                         u16 transaction, u16 auth_alg,
1450                         u8 *extra, size_t extra_len, const u8 *bssid,
1451                         const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
1452void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1453                                    const u8 *bssid, u16 stype, u16 reason,
1454                                    bool send_frame, u8 *frame_buf);
1455int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1456                             const u8 *ie, size_t ie_len,
1457                             enum ieee80211_band band, u32 rate_mask,
1458                             u8 channel);
1459struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1460                                          u8 *dst, u32 ratemask,
1461                                          struct ieee80211_channel *chan,
1462                                          const u8 *ssid, size_t ssid_len,
1463                                          const u8 *ie, size_t ie_len,
1464                                          bool directed);
1465void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1466                              const u8 *ssid, size_t ssid_len,
1467                              const u8 *ie, size_t ie_len,
1468                              u32 ratemask, bool directed, bool no_cck,
1469                              struct ieee80211_channel *channel);
1470
1471void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1472                                  const size_t supp_rates_len,
1473                                  const u8 *supp_rates);
1474u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1475                            struct ieee802_11_elems *elems,
1476                            enum ieee80211_band band, u32 *basic_rates);
1477int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1478                             enum ieee80211_smps_mode smps_mode);
1479void ieee80211_recalc_smps(struct ieee80211_local *local);
1480
1481size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1482                          const u8 *ids, int n_ids, size_t offset);
1483size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1484u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1485                              u16 cap);
1486u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1487                               struct ieee80211_channel *channel,
1488                               enum nl80211_channel_type channel_type,
1489                               u16 prot_mode);
1490u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1491                               u32 cap);
1492int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1493                            struct sk_buff *skb, bool need_basic,
1494                            enum ieee80211_band band);
1495int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1496                                struct sk_buff *skb, bool need_basic,
1497                                enum ieee80211_band band);
1498
1499/* channel management */
1500enum ieee80211_chan_mode {
1501        CHAN_MODE_UNDEFINED,
1502        CHAN_MODE_HOPPING,
1503        CHAN_MODE_FIXED,
1504};
1505
1506enum ieee80211_chan_mode
1507ieee80211_get_channel_mode(struct ieee80211_local *local,
1508                           struct ieee80211_sub_if_data *ignore);
1509bool ieee80211_set_channel_type(struct ieee80211_local *local,
1510                                struct ieee80211_sub_if_data *sdata,
1511                                enum nl80211_channel_type chantype);
1512enum nl80211_channel_type
1513ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper);
1514
1515#ifdef CONFIG_MAC80211_NOINLINE
1516#define debug_noinline noinline
1517#else
1518#define debug_noinline
1519#endif
1520
1521#endif /* IEEE80211_I_H */
1522
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