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