net/mac80211/ieee80211_i.h

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005, Devicescape Software, Inc.
   4  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   5  * Copyright 2007-2010  Johannes Berg <johannes@sipsolutions.net>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef IEEE80211_I_H
  13 #define IEEE80211_I_H
  14
  15 #include <linux/kernel.h>
  16 #include <linux/device.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/types.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/leds.h>
  27 #include <linux/idr.h>
  28 #include <net/ieee80211_radiotap.h>
  29 #include <net/cfg80211.h>
  30 #include <net/mac80211.h>
  31 #include "key.h"
  32 #include "sta_info.h"
  33 #include "debug.h"
  34
  35 struct ieee80211_local;
  36
  37 /* Maximum number of broadcast/multicast frames to buffer when some of the
  38  * associated stations are using power saving. */
  39 #define AP_MAX_BC_BUFFER 128
  40
  41 /* Maximum number of frames buffered to all STAs, including multicast frames.
  42  * Note: increasing this limit increases the potential memory requirement. Each
  43  * frame can be up to about 2 kB long. */
  44 #define TOTAL_MAX_TX_BUFFER 512
  45
  46 /* Required encryption head and tailroom */
  47 #define IEEE80211_ENCRYPT_HEADROOM 8
  48 #define IEEE80211_ENCRYPT_TAILROOM 18
  49
  50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  51  * reception of at least three fragmented frames. This limit can be increased
  52  * by changing this define, at the cost of slower frame reassembly and
  53  * increased memory use (about 2 kB of RAM per entry). */
  54 #define IEEE80211_FRAGMENT_MAX 4
  55
  56 #define TU_TO_JIFFIES(x)        (usecs_to_jiffies((x) * 1024))
  57 #define TU_TO_EXP_TIME(x)       (jiffies + TU_TO_JIFFIES(x))
  58
  59 /* power level hasn't been configured (or set to automatic) */
  60 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
  61
  62 /*
  63  * Some APs experience problems when working with U-APSD. Decrease the
  64  * probability of that happening by using legacy mode for all ACs but VO.
  65  * The AP that caused us trouble was a Cisco 4410N. It ignores our
  66  * setting, and always treats non-VO ACs as legacy.
  67  */
  68 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  69         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  70
  71 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
  72         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  73
  74 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
  75
  76 struct ieee80211_fragment_entry {
  77         unsigned long first_frag_time;
  78         unsigned int seq;
  79         unsigned int rx_queue;
  80         unsigned int last_frag;
  81         unsigned int extra_len;
  82         struct sk_buff_head skb_list;
  83         int ccmp; /* Whether fragments were encrypted with CCMP */
  84         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  85 };
  86
  87
  88 struct ieee80211_bss {
  89         u32 device_ts_beacon, device_ts_presp;
  90
  91         bool wmm_used;
  92         bool uapsd_supported;
  93
  94 #define IEEE80211_MAX_SUPP_RATES 32
  95         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  96         size_t supp_rates_len;
  97         struct ieee80211_rate *beacon_rate;
  98
  99         /*
 100          * During association, we save an ERP value from a probe response so
 101          * that we can feed ERP info to the driver when handling the
 102          * association completes. these fields probably won't be up-to-date
 103          * otherwise, you probably don't want to use them.
 104          */
 105         bool has_erp_value;
 106         u8 erp_value;
 107
 108         /* Keep track of the corruption of the last beacon/probe response. */
 109         u8 corrupt_data;
 110
 111         /* Keep track of what bits of information we have valid info for. */
 112         u8 valid_data;
 113 };
 114
 115 /**
 116  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
 117  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
 118  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
 119  *
 120  * These are bss flags that are attached to a bss in the
 121  * @corrupt_data field of &struct ieee80211_bss.
 122  */
 123 enum ieee80211_bss_corrupt_data_flags {
 124         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
 125         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
 126 };
 127
 128 /**
 129  * enum ieee80211_valid_data_flags - BSS valid data flags
 130  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
 131  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
 132  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
 133  *
 134  * These are bss flags that are attached to a bss in the
 135  * @valid_data field of &struct ieee80211_bss.  They show which parts
 136  * of the data structure were recieved as a result of an un-corrupted
 137  * beacon/probe response.
 138  */
 139 enum ieee80211_bss_valid_data_flags {
 140         IEEE80211_BSS_VALID_WMM                 = BIT(1),
 141         IEEE80211_BSS_VALID_RATES               = BIT(2),
 142         IEEE80211_BSS_VALID_ERP                 = BIT(3)
 143 };
 144
 145 typedef unsigned __bitwise__ ieee80211_tx_result;
 146 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 147 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 148 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 149
 150 #define IEEE80211_TX_UNICAST            BIT(1)
 151 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 152
 153 struct ieee80211_tx_data {
 154         struct sk_buff *skb;
 155         struct sk_buff_head skbs;
 156         struct ieee80211_local *local;
 157         struct ieee80211_sub_if_data *sdata;
 158         struct sta_info *sta;
 159         struct ieee80211_key *key;
 160         struct ieee80211_tx_rate rate;
 161
 162         unsigned int flags;
 163 };
 164
 165
 166 typedef unsigned __bitwise__ ieee80211_rx_result;
 167 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 168 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 169 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 170 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 171
 172 /**
 173  * enum ieee80211_packet_rx_flags - packet RX flags
 174  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 175  *      (incl. multicast frames)
 176  * @IEEE80211_RX_FRAGMENTED: fragmented frame
 177  * @IEEE80211_RX_AMSDU: a-MSDU packet
 178  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
 179  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
 180  *
 181  * These are per-frame flags that are attached to a frame in the
 182  * @rx_flags field of &struct ieee80211_rx_status.
 183  */
 184 enum ieee80211_packet_rx_flags {
 185         IEEE80211_RX_RA_MATCH                   = BIT(1),
 186         IEEE80211_RX_FRAGMENTED                 = BIT(2),
 187         IEEE80211_RX_AMSDU                      = BIT(3),
 188         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
 189         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
 190 };
 191
 192 /**
 193  * enum ieee80211_rx_flags - RX data flags
 194  *
 195  * @IEEE80211_RX_CMNTR: received on cooked monitor already
 196  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
 197  *      to cfg80211_report_obss_beacon().
 198  *
 199  * These flags are used across handling multiple interfaces
 200  * for a single frame.
 201  */
 202 enum ieee80211_rx_flags {
 203         IEEE80211_RX_CMNTR              = BIT(0),
 204         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
 205 };
 206
 207 struct ieee80211_rx_data {
 208         struct sk_buff *skb;
 209         struct ieee80211_local *local;
 210         struct ieee80211_sub_if_data *sdata;
 211         struct sta_info *sta;
 212         struct ieee80211_key *key;
 213
 214         unsigned int flags;
 215
 216         /*
 217          * Index into sequence numbers array, 0..16
 218          * since the last (16) is used for non-QoS,
 219          * will be 16 on non-QoS frames.
 220          */
 221         int seqno_idx;
 222
 223         /*
 224          * Index into the security IV/PN arrays, 0..16
 225          * since the last (16) is used for CCMP-encrypted
 226          * management frames, will be set to 16 on mgmt
 227          * frames and 0 on non-QoS frames.
 228          */
 229         int security_idx;
 230
 231         u32 tkip_iv32;
 232         u16 tkip_iv16;
 233 };
 234
 235 struct beacon_data {
 236         u8 *head, *tail;
 237         int head_len, tail_len;
 238         struct rcu_head rcu_head;
 239 };
 240
 241 struct probe_resp {
 242         struct rcu_head rcu_head;
 243         int len;
 244         u8 data[0];
 245 };
 246
 247 struct ps_data {
 248         /* yes, this looks ugly, but guarantees that we can later use
 249          * bitmap_empty :)
 250          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 251         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 252         struct sk_buff_head bc_buf;
 253         atomic_t num_sta_ps; /* number of stations in PS mode */
 254         int dtim_count;
 255         bool dtim_bc_mc;
 256 };
 257
 258 struct ieee80211_if_ap {
 259         struct beacon_data __rcu *beacon;
 260         struct probe_resp __rcu *probe_resp;
 261
 262         struct list_head vlans;
 263
 264         struct ps_data ps;
 265         atomic_t num_mcast_sta; /* number of stations receiving multicast */
 266 };
 267
 268 struct ieee80211_if_wds {
 269         struct sta_info *sta;
 270         u8 remote_addr[ETH_ALEN];
 271 };
 272
 273 struct ieee80211_if_vlan {
 274         struct list_head list;
 275
 276         /* used for all tx if the VLAN is configured to 4-addr mode */
 277         struct sta_info __rcu *sta;
 278 };
 279
 280 struct mesh_stats {
 281         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
 282         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
 283         __u32 fwded_frames;             /* Mesh total forwarded frames */
 284         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 285         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 286         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
 287 };
 288
 289 #define PREQ_Q_F_START          0x1
 290 #define PREQ_Q_F_REFRESH        0x2
 291 struct mesh_preq_queue {
 292         struct list_head list;
 293         u8 dst[ETH_ALEN];
 294         u8 flags;
 295 };
 296
 297 #if HZ/100 == 0
 298 #define IEEE80211_ROC_MIN_LEFT  1
 299 #else
 300 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
 301 #endif
 302
 303 struct ieee80211_roc_work {
 304         struct list_head list;
 305         struct list_head dependents;
 306
 307         struct delayed_work work;
 308
 309         struct ieee80211_sub_if_data *sdata;
 310
 311         struct ieee80211_channel *chan;
 312
 313         bool started, abort, hw_begun, notified;
 314         bool to_be_freed;
 315
 316         unsigned long hw_start_time;
 317
 318         u32 duration, req_duration;
 319         struct sk_buff *frame;
 320         u64 cookie, mgmt_tx_cookie;
 321         enum ieee80211_roc_type type;
 322 };
 323
 324 /* flags used in struct ieee80211_if_managed.flags */
 325 enum ieee80211_sta_flags {
 326         IEEE80211_STA_BEACON_POLL       = BIT(0),
 327         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
 328         IEEE80211_STA_CONTROL_PORT      = BIT(2),
 329         IEEE80211_STA_DISABLE_HT        = BIT(4),
 330         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
 331         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 332         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
 333         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
 334         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
 335         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
 336         IEEE80211_STA_DISABLE_VHT       = BIT(11),
 337         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
 338         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
 339 };
 340
 341 struct ieee80211_mgd_auth_data {
 342         struct cfg80211_bss *bss;
 343         unsigned long timeout;
 344         int tries;
 345         u16 algorithm, expected_transaction;
 346
 347         u8 key[WLAN_KEY_LEN_WEP104];
 348         u8 key_len, key_idx;
 349         bool done;
 350         bool timeout_started;
 351
 352         u16 sae_trans, sae_status;
 353         size_t data_len;
 354         u8 data[];
 355 };
 356
 357 struct ieee80211_mgd_assoc_data {
 358         struct cfg80211_bss *bss;
 359         const u8 *supp_rates;
 360
 361         unsigned long timeout;
 362         int tries;
 363
 364         u16 capability;
 365         u8 prev_bssid[ETH_ALEN];
 366         u8 ssid[IEEE80211_MAX_SSID_LEN];
 367         u8 ssid_len;
 368         u8 supp_rates_len;
 369         bool wmm, uapsd;
 370         bool need_beacon;
 371         bool synced;
 372         bool timeout_started;
 373
 374         u8 ap_ht_param;
 375
 376         struct ieee80211_vht_cap ap_vht_cap;
 377
 378         size_t ie_len;
 379         u8 ie[];
 380 };
 381
 382 struct ieee80211_if_managed {
 383         struct timer_list timer;
 384         struct timer_list conn_mon_timer;
 385         struct timer_list bcn_mon_timer;
 386         struct timer_list chswitch_timer;
 387         struct work_struct monitor_work;
 388         struct work_struct chswitch_work;
 389         struct work_struct beacon_connection_loss_work;
 390         struct work_struct csa_connection_drop_work;
 391
 392         unsigned long beacon_timeout;
 393         unsigned long probe_timeout;
 394         int probe_send_count;
 395         bool nullfunc_failed;
 396         bool connection_loss;
 397
 398         struct cfg80211_bss *associated;
 399         struct ieee80211_mgd_auth_data *auth_data;
 400         struct ieee80211_mgd_assoc_data *assoc_data;
 401
 402         u8 bssid[ETH_ALEN];
 403
 404         u16 aid;
 405
 406         bool powersave; /* powersave requested for this iface */
 407         bool broken_ap; /* AP is broken -- turn off powersave */
 408         bool have_beacon;
 409         u8 dtim_period;
 410         enum ieee80211_smps_mode req_smps, /* requested smps mode */
 411                                  driver_smps_mode; /* smps mode request */
 412
 413         struct work_struct request_smps_work;
 414
 415         unsigned int flags;
 416
 417         bool beacon_crc_valid;
 418         u32 beacon_crc;
 419
 420         bool status_acked;
 421         bool status_received;
 422         __le16 status_fc;
 423
 424         enum {
 425                 IEEE80211_MFP_DISABLED,
 426                 IEEE80211_MFP_OPTIONAL,
 427                 IEEE80211_MFP_REQUIRED
 428         } mfp; /* management frame protection */
 429
 430         /*
 431          * Bitmask of enabled u-apsd queues,
 432          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
 433          * to take effect.
 434          */
 435         unsigned int uapsd_queues;
 436
 437         /*
 438          * Maximum number of buffered frames AP can deliver during a
 439          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
 440          * Needs a new association to take effect.
 441          */
 442         unsigned int uapsd_max_sp_len;
 443
 444         int wmm_last_param_set;
 445
 446         u8 use_4addr;
 447
 448         s16 p2p_noa_index;
 449
 450         /* Signal strength from the last Beacon frame in the current BSS. */
 451         int last_beacon_signal;
 452
 453         /*
 454          * Weighted average of the signal strength from Beacon frames in the
 455          * current BSS. This is in units of 1/16 of the signal unit to maintain
 456          * accuracy and to speed up calculations, i.e., the value need to be
 457          * divided by 16 to get the actual value.
 458          */
 459         int ave_beacon_signal;
 460
 461         /*
 462          * Number of Beacon frames used in ave_beacon_signal. This can be used
 463          * to avoid generating less reliable cqm events that would be based
 464          * only on couple of received frames.
 465          */
 466         unsigned int count_beacon_signal;
 467
 468         /*
 469          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
 470          * that triggered a cqm event. 0 indicates that no event has been
 471          * generated for the current association.
 472          */
 473         int last_cqm_event_signal;
 474
 475         /*
 476          * State variables for keeping track of RSSI of the AP currently
 477          * connected to and informing driver when RSSI has gone
 478          * below/above a certain threshold.
 479          */
 480         int rssi_min_thold, rssi_max_thold;
 481         int last_ave_beacon_signal;
 482
 483         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 484         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 485         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 486         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
 487 };
 488
 489 struct ieee80211_if_ibss {
 490         struct timer_list timer;
 491
 492         unsigned long last_scan_completed;
 493
 494         u32 basic_rates;
 495
 496         bool fixed_bssid;
 497         bool fixed_channel;
 498         bool privacy;
 499
 500         bool control_port;
 501
 502         u8 bssid[ETH_ALEN] __aligned(2);
 503         u8 ssid[IEEE80211_MAX_SSID_LEN];
 504         u8 ssid_len, ie_len;
 505         u8 *ie;
 506         struct cfg80211_chan_def chandef;
 507
 508         unsigned long ibss_join_req;
 509         /* probe response/beacon for IBSS */
 510         struct beacon_data __rcu *presp;
 511
 512         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
 513         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 514
 515         spinlock_t incomplete_lock;
 516         struct list_head incomplete_stations;
 517
 518         enum {
 519                 IEEE80211_IBSS_MLME_SEARCH,
 520                 IEEE80211_IBSS_MLME_JOINED,
 521         } state;
 522 };
 523
 524 /**
 525  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
 526  *
 527  * these declarations define the interface, which enables
 528  * vendor-specific mesh synchronization
 529  *
 530  */
 531 struct ieee802_11_elems;
 532 struct ieee80211_mesh_sync_ops {
 533         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
 534                              u16 stype,
 535                              struct ieee80211_mgmt *mgmt,
 536                              struct ieee802_11_elems *elems,
 537                              struct ieee80211_rx_status *rx_status);
 538         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
 539         /* add other framework functions here */
 540 };
 541
 542 struct ieee80211_if_mesh {
 543         struct timer_list housekeeping_timer;
 544         struct timer_list mesh_path_timer;
 545         struct timer_list mesh_path_root_timer;
 546
 547         unsigned long wrkq_flags;
 548         unsigned long mbss_changed;
 549
 550         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 551         size_t mesh_id_len;
 552         /* Active Path Selection Protocol Identifier */
 553         u8 mesh_pp_id;
 554         /* Active Path Selection Metric Identifier */
 555         u8 mesh_pm_id;
 556         /* Congestion Control Mode Identifier */
 557         u8 mesh_cc_id;
 558         /* Synchronization Protocol Identifier */
 559         u8 mesh_sp_id;
 560         /* Authentication Protocol Identifier */
 561         u8 mesh_auth_id;
 562         /* Local mesh Sequence Number */
 563         u32 sn;
 564         /* Last used PREQ ID */
 565         u32 preq_id;
 566         atomic_t mpaths;
 567         /* Timestamp of last SN update */
 568         unsigned long last_sn_update;
 569         /* Time when it's ok to send next PERR */
 570         unsigned long next_perr;
 571         /* Timestamp of last PREQ sent */
 572         unsigned long last_preq;
 573         struct mesh_rmc *rmc;
 574         spinlock_t mesh_preq_queue_lock;
 575         struct mesh_preq_queue preq_queue;
 576         int preq_queue_len;
 577         struct mesh_stats mshstats;
 578         struct mesh_config mshcfg;
 579         atomic_t estab_plinks;
 580         u32 mesh_seqnum;
 581         bool accepting_plinks;
 582         int num_gates;
 583         struct beacon_data __rcu *beacon;
 584         const u8 *ie;
 585         u8 ie_len;
 586         enum {
 587                 IEEE80211_MESH_SEC_NONE = 0x0,
 588                 IEEE80211_MESH_SEC_AUTHED = 0x1,
 589                 IEEE80211_MESH_SEC_SECURED = 0x2,
 590         } security;
 591         bool user_mpm;
 592         /* Extensible Synchronization Framework */
 593         const struct ieee80211_mesh_sync_ops *sync_ops;
 594         s64 sync_offset_clockdrift_max;
 595         spinlock_t sync_offset_lock;
 596         bool adjusting_tbtt;
 597         /* mesh power save */
 598         enum nl80211_mesh_power_mode nonpeer_pm;
 599         int ps_peers_light_sleep;
 600         int ps_peers_deep_sleep;
 601         struct ps_data ps;
 602 };
 603
 604 #ifdef CONFIG_MAC80211_MESH
 605 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 606         do { (msh)->mshstats.name++; } while (0)
 607 #else
 608 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 609         do { } while (0)
 610 #endif
 611
 612 /**
 613  * enum ieee80211_sub_if_data_flags - virtual interface flags
 614  *
 615  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 616  * @IEEE80211_SDATA_PROMISC: interface is promisc
 617  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 618  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 619  *      associated stations and deliver multicast frames both
 620  *      back to wireless media and to the local net stack.
 621  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
 622  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
 623  */
 624 enum ieee80211_sub_if_data_flags {
 625         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 626         IEEE80211_SDATA_PROMISC                 = BIT(1),
 627         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 628         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 629         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
 630         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
 631 };
 632
 633 /**
 634  * enum ieee80211_sdata_state_bits - virtual interface state bits
 635  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
 636  *      mirrors netif_running() but is separate for interface type
 637  *      change handling while the interface is up
 638  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 639  *      mode, so queues are stopped
 640  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 641  *      to offchannel, reset when offchannel returns
 642  */
 643 enum ieee80211_sdata_state_bits {
 644         SDATA_STATE_RUNNING,
 645         SDATA_STATE_OFFCHANNEL,
 646         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
 647 };
 648
 649 /**
 650  * enum ieee80211_chanctx_mode - channel context configuration mode
 651  *
 652  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
 653  *      multiple interfaces
 654  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
 655  *      only by a single interface. This can be used for example for
 656  *      non-fixed channel IBSS.
 657  */
 658 enum ieee80211_chanctx_mode {
 659         IEEE80211_CHANCTX_SHARED,
 660         IEEE80211_CHANCTX_EXCLUSIVE
 661 };
 662
 663 struct ieee80211_chanctx {
 664         struct list_head list;
 665         struct rcu_head rcu_head;
 666
 667         enum ieee80211_chanctx_mode mode;
 668         int refcount;
 669         bool driver_present;
 670
 671         struct ieee80211_chanctx_conf conf;
 672 };
 673
 674 struct ieee80211_sub_if_data {
 675         struct list_head list;
 676
 677         struct wireless_dev wdev;
 678
 679         /* keys */
 680         struct list_head key_list;
 681
 682         /* count for keys needing tailroom space allocation */
 683         int crypto_tx_tailroom_needed_cnt;
 684         int crypto_tx_tailroom_pending_dec;
 685         struct delayed_work dec_tailroom_needed_wk;
 686
 687         struct net_device *dev;
 688         struct ieee80211_local *local;
 689
 690         unsigned int flags;
 691
 692         unsigned long state;
 693
 694         int drop_unencrypted;
 695
 696         char name[IFNAMSIZ];
 697
 698         /* Fragment table for host-based reassembly */
 699         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 700         unsigned int fragment_next;
 701
 702         /* TID bitmap for NoAck policy */
 703         u16 noack_map;
 704
 705         /* bit field of ACM bits (BIT(802.1D tag)) */
 706         u8 wmm_acm;
 707
 708         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 709         struct ieee80211_key __rcu *default_unicast_key;
 710         struct ieee80211_key __rcu *default_multicast_key;
 711         struct ieee80211_key __rcu *default_mgmt_key;
 712
 713         u16 sequence_number;
 714         __be16 control_port_protocol;
 715         bool control_port_no_encrypt;
 716
 717         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 718
 719         /* used to reconfigure hardware SM PS */
 720         struct work_struct recalc_smps;
 721
 722         struct work_struct work;
 723         struct sk_buff_head skb_queue;
 724
 725         u8 needed_rx_chains;
 726         enum ieee80211_smps_mode smps_mode;
 727
 728         int user_power_level; /* in dBm */
 729         int ap_power_level; /* in dBm */
 730
 731         bool radar_required;
 732         struct delayed_work dfs_cac_timer_work;
 733
 734         /*
 735          * AP this belongs to: self in AP mode and
 736          * corresponding AP in VLAN mode, NULL for
 737          * all others (might be needed later in IBSS)
 738          */
 739         struct ieee80211_if_ap *bss;
 740
 741         /* bitmap of allowed (non-MCS) rate indexes for rate control */
 742         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
 743
 744         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 745         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 746
 747         union {
 748                 struct ieee80211_if_ap ap;
 749                 struct ieee80211_if_wds wds;
 750                 struct ieee80211_if_vlan vlan;
 751                 struct ieee80211_if_managed mgd;
 752                 struct ieee80211_if_ibss ibss;
 753                 struct ieee80211_if_mesh mesh;
 754                 u32 mntr_flags;
 755         } u;
 756
 757         spinlock_t cleanup_stations_lock;
 758         struct list_head cleanup_stations;
 759         struct work_struct cleanup_stations_wk;
 760
 761 #ifdef CONFIG_MAC80211_DEBUGFS
 762         struct {
 763                 struct dentry *subdir_stations;
 764                 struct dentry *default_unicast_key;
 765                 struct dentry *default_multicast_key;
 766                 struct dentry *default_mgmt_key;
 767         } debugfs;
 768 #endif
 769
 770         /* must be last, dynamically sized area in this! */
 771         struct ieee80211_vif vif;
 772 };
 773
 774 static inline
 775 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 776 {
 777         return container_of(p, struct ieee80211_sub_if_data, vif);
 778 }
 779
 780 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
 781         __acquires(&sdata->wdev.mtx)
 782 {
 783         mutex_lock(&sdata->wdev.mtx);
 784         __acquire(&sdata->wdev.mtx);
 785 }
 786
 787 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
 788         __releases(&sdata->wdev.mtx)
 789 {
 790         mutex_unlock(&sdata->wdev.mtx);
 791         __release(&sdata->wdev.mtx);
 792 }
 793
 794 static inline void
 795 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
 796 {
 797         lockdep_assert_held(&sdata->wdev.mtx);
 798 }
 799
 800 static inline enum ieee80211_band
 801 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 802 {
 803         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 804         struct ieee80211_chanctx_conf *chanctx_conf;
 805
 806         rcu_read_lock();
 807         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 808         if (!WARN_ON(!chanctx_conf))
 809                 band = chanctx_conf->def.chan->band;
 810         rcu_read_unlock();
 811
 812         return band;
 813 }
 814
 815 static inline int
 816 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
 817 {
 818         switch (chandef->width) {
 819         case NL80211_CHAN_WIDTH_5:
 820                 return 2;
 821         case NL80211_CHAN_WIDTH_10:
 822                 return 1;
 823         default:
 824                 return 0;
 825         }
 826 }
 827
 828 static inline int
 829 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
 830 {
 831         struct ieee80211_chanctx_conf *chanctx_conf;
 832         int shift = 0;
 833
 834         rcu_read_lock();
 835         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 836         if (chanctx_conf)
 837                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
 838         rcu_read_unlock();
 839
 840         return shift;
 841 }
 842
 843 enum sdata_queue_type {
 844         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
 845         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
 846         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
 847 };
 848
 849 enum {
 850         IEEE80211_RX_MSG        = 1,
 851         IEEE80211_TX_STATUS_MSG = 2,
 852 };
 853
 854 enum queue_stop_reason {
 855         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 856         IEEE80211_QUEUE_STOP_REASON_PS,
 857         IEEE80211_QUEUE_STOP_REASON_CSA,
 858         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 859         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 860         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 861         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
 862         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 863 };
 864
 865 #ifdef CONFIG_MAC80211_LEDS
 866 struct tpt_led_trigger {
 867         struct led_trigger trig;
 868         char name[32];
 869         const struct ieee80211_tpt_blink *blink_table;
 870         unsigned int blink_table_len;
 871         struct timer_list timer;
 872         unsigned long prev_traffic;
 873         unsigned long tx_bytes, rx_bytes;
 874         unsigned int active, want;
 875         bool running;
 876 };
 877 #endif
 878
 879 /**
 880  * mac80211 scan flags - currently active scan mode
 881  *
 882  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
 883  *      well be on the operating channel
 884  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
 885  *      determine if we are on the operating channel or not
 886  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
 887  *      channel. This should not interrupt normal traffic.
 888  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
 889  *      that the scan completed.
 890  * @SCAN_ABORTED: Set for our scan work function when the driver reported
 891  *      a scan complete for an aborted scan.
 892  */
 893 enum {
 894         SCAN_SW_SCANNING,
 895         SCAN_HW_SCANNING,
 896         SCAN_ONCHANNEL_SCANNING,
 897         SCAN_COMPLETED,
 898         SCAN_ABORTED,
 899 };
 900
 901 /**
 902  * enum mac80211_scan_state - scan state machine states
 903  *
 904  * @SCAN_DECISION: Main entry point to the scan state machine, this state
 905  *      determines if we should keep on scanning or switch back to the
 906  *      operating channel
 907  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
 908  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
 909  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
 910  *      send out data
 911  * @SCAN_RESUME: Resume the scan and scan the next channel
 912  * @SCAN_ABORT: Abort the scan and go back to operating channel
 913  */
 914 enum mac80211_scan_state {
 915         SCAN_DECISION,
 916         SCAN_SET_CHANNEL,
 917         SCAN_SEND_PROBE,
 918         SCAN_SUSPEND,
 919         SCAN_RESUME,
 920         SCAN_ABORT,
 921 };
 922
 923 struct ieee80211_local {
 924         /* embed the driver visible part.
 925          * don't cast (use the static inlines below), but we keep
 926          * it first anyway so they become a no-op */
 927         struct ieee80211_hw hw;
 928
 929         const struct ieee80211_ops *ops;
 930
 931         /*
 932          * private workqueue to mac80211. mac80211 makes this accessible
 933          * via ieee80211_queue_work()
 934          */
 935         struct workqueue_struct *workqueue;
 936
 937         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 938         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 939         spinlock_t queue_stop_reason_lock;
 940
 941         int open_count;
 942         int monitors, cooked_mntrs;
 943         /* number of interfaces with corresponding FIF_ flags */
 944         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
 945             fif_probe_req;
 946         int probe_req_reg;
 947         unsigned int filter_flags; /* FIF_* */
 948
 949         bool wiphy_ciphers_allocated;
 950
 951         bool use_chanctx;
 952
 953         /* protects the aggregated multicast list and filter calls */
 954         spinlock_t filter_lock;
 955
 956         /* used for uploading changed mc list */
 957         struct work_struct reconfig_filter;
 958
 959         /* aggregated multicast list */
 960         struct netdev_hw_addr_list mc_list;
 961
 962         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 963
 964         /*
 965          * suspended is true if we finished all the suspend _and_ we have
 966          * not yet come up from resume. This is to be used by mac80211
 967          * to ensure driver sanity during suspend and mac80211's own
 968          * sanity. It can eventually be used for WoW as well.
 969          */
 970         bool suspended;
 971
 972         /*
 973          * Resuming is true while suspended, but when we're reprogramming the
 974          * hardware -- at that time it's allowed to use ieee80211_queue_work()
 975          * again even though some other parts of the stack are still suspended
 976          * and we still drop received frames to avoid waking the stack.
 977          */
 978         bool resuming;
 979
 980         /*
 981          * quiescing is true during the suspend process _only_ to
 982          * ease timer cancelling etc.
 983          */
 984         bool quiescing;
 985
 986         /* device is started */
 987         bool started;
 988
 989         /* device is during a HW reconfig */
 990         bool in_reconfig;
 991
 992         /* wowlan is enabled -- don't reconfig on resume */
 993         bool wowlan;
 994
 995         /* DFS/radar detection is enabled */
 996         bool radar_detect_enabled;
 997         struct work_struct radar_detected_work;
 998
 999         /* number of RX chains the hardware has */
1000         u8 rx_chains;
1001
1002         int tx_headroom; /* required headroom for hardware/radiotap */
1003
1004         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1005          * added to skb_queue will be processed, but frames in
1006          * skb_queue_unreliable may be dropped if the total length of these
1007          * queues increases over the limit. */
1008 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1009         struct tasklet_struct tasklet;
1010         struct sk_buff_head skb_queue;
1011         struct sk_buff_head skb_queue_unreliable;
1012
1013         spinlock_t rx_path_lock;
1014
1015         /* Station data */
1016         /*
1017          * The mutex only protects the list, hash table and
1018          * counter, reads are done with RCU.
1019          */
1020         struct mutex sta_mtx;
1021         spinlock_t tim_lock;
1022         unsigned long num_sta;
1023         struct list_head sta_list;
1024         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1025         struct timer_list sta_cleanup;
1026         int sta_generation;
1027
1028         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1029         struct tasklet_struct tx_pending_tasklet;
1030
1031         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1032
1033         /* number of interfaces with corresponding IFF_ flags */
1034         atomic_t iff_allmultis, iff_promiscs;
1035
1036         struct rate_control_ref *rate_ctrl;
1037
1038         struct crypto_cipher *wep_tx_tfm;
1039         struct crypto_cipher *wep_rx_tfm;
1040         u32 wep_iv;
1041
1042         /* see iface.c */
1043         struct list_head interfaces;
1044         struct mutex iflist_mtx;
1045
1046         /*
1047          * Key mutex, protects sdata's key_list and sta_info's
1048          * key pointers (write access, they're RCU.)
1049          */
1050         struct mutex key_mtx;
1051
1052         /* mutex for scan and work locking */
1053         struct mutex mtx;
1054
1055         /* Scanning and BSS list */
1056         unsigned long scanning;
1057         struct cfg80211_ssid scan_ssid;
1058         struct cfg80211_scan_request *int_scan_req;
1059         struct cfg80211_scan_request *scan_req, *hw_scan_req;
1060         struct ieee80211_channel *scan_channel;
1061         enum ieee80211_band hw_scan_band;
1062         int scan_channel_idx;
1063         int scan_ies_len;
1064         int hw_scan_ies_bufsize;
1065
1066         struct work_struct sched_scan_stopped_work;
1067         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1068
1069         unsigned long leave_oper_channel_time;
1070         enum mac80211_scan_state next_scan_state;
1071         struct delayed_work scan_work;
1072         struct ieee80211_sub_if_data __rcu *scan_sdata;
1073         struct cfg80211_chan_def csa_chandef;
1074         /* For backward compatibility only -- do not use */
1075         struct cfg80211_chan_def _oper_chandef;
1076
1077         /* Temporary remain-on-channel for off-channel operations */
1078         struct ieee80211_channel *tmp_channel;
1079
1080         /* channel contexts */
1081         struct list_head chanctx_list;
1082         struct mutex chanctx_mtx;
1083
1084         /* SNMP counters */
1085         /* dot11CountersTable */
1086         u32 dot11TransmittedFragmentCount;
1087         u32 dot11MulticastTransmittedFrameCount;
1088         u32 dot11FailedCount;
1089         u32 dot11RetryCount;
1090         u32 dot11MultipleRetryCount;
1091         u32 dot11FrameDuplicateCount;
1092         u32 dot11ReceivedFragmentCount;
1093         u32 dot11MulticastReceivedFrameCount;
1094         u32 dot11TransmittedFrameCount;
1095
1096 #ifdef CONFIG_MAC80211_LEDS
1097         int tx_led_counter, rx_led_counter;
1098         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1099         struct tpt_led_trigger *tpt_led_trigger;
1100         char tx_led_name[32], rx_led_name[32],
1101              assoc_led_name[32], radio_led_name[32];
1102 #endif
1103
1104 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1105         /* TX/RX handler statistics */
1106         unsigned int tx_handlers_drop;
1107         unsigned int tx_handlers_queued;
1108         unsigned int tx_handlers_drop_unencrypted;
1109         unsigned int tx_handlers_drop_fragment;
1110         unsigned int tx_handlers_drop_wep;
1111         unsigned int tx_handlers_drop_not_assoc;
1112         unsigned int tx_handlers_drop_unauth_port;
1113         unsigned int rx_handlers_drop;
1114         unsigned int rx_handlers_queued;
1115         unsigned int rx_handlers_drop_nullfunc;
1116         unsigned int rx_handlers_drop_defrag;
1117         unsigned int rx_handlers_drop_short;
1118         unsigned int tx_expand_skb_head;
1119         unsigned int tx_expand_skb_head_cloned;
1120         unsigned int rx_expand_skb_head;
1121         unsigned int rx_expand_skb_head2;
1122         unsigned int rx_handlers_fragments;
1123         unsigned int tx_status_drop;
1124 #define I802_DEBUG_INC(c) (c)++
1125 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1126 #define I802_DEBUG_INC(c) do { } while (0)
1127 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1128
1129
1130         int total_ps_buffered; /* total number of all buffered unicast and
1131                                 * multicast packets for power saving stations
1132                                 */
1133
1134         bool pspolling;
1135         bool offchannel_ps_enabled;
1136         /*
1137          * PS can only be enabled when we have exactly one managed
1138          * interface (and monitors) in PS, this then points there.
1139          */
1140         struct ieee80211_sub_if_data *ps_sdata;
1141         struct work_struct dynamic_ps_enable_work;
1142         struct work_struct dynamic_ps_disable_work;
1143         struct timer_list dynamic_ps_timer;
1144         struct notifier_block network_latency_notifier;
1145         struct notifier_block ifa_notifier;
1146         struct notifier_block ifa6_notifier;
1147
1148         /*
1149          * The dynamic ps timeout configured from user space via WEXT -
1150          * this will override whatever chosen by mac80211 internally.
1151          */
1152         int dynamic_ps_forced_timeout;
1153
1154         int user_power_level; /* in dBm, for all interfaces */
1155
1156         enum ieee80211_smps_mode smps_mode;
1157
1158         struct work_struct restart_work;
1159
1160 #ifdef CONFIG_MAC80211_DEBUGFS
1161         struct local_debugfsdentries {
1162                 struct dentry *rcdir;
1163                 struct dentry *keys;
1164         } debugfs;
1165 #endif
1166
1167         /*
1168          * Remain-on-channel support
1169          */
1170         struct list_head roc_list;
1171         struct work_struct hw_roc_start, hw_roc_done;
1172         unsigned long hw_roc_start_time;
1173         u64 roc_cookie_counter;
1174
1175         struct idr ack_status_frames;
1176         spinlock_t ack_status_lock;
1177
1178         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1179
1180         /* virtual monitor interface */
1181         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1182         struct cfg80211_chan_def monitor_chandef;
1183 };
1184
1185 static inline struct ieee80211_sub_if_data *
1186 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1187 {
1188         return netdev_priv(dev);
1189 }
1190
1191 static inline struct ieee80211_sub_if_data *
1192 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1193 {
1194         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1195 }
1196
1197 /* this struct represents 802.11n's RA/TID combination */
1198 struct ieee80211_ra_tid {
1199         u8 ra[ETH_ALEN];
1200         u16 tid;
1201 };
1202
1203 /* Parsed Information Elements */
1204 struct ieee802_11_elems {
1205         const u8 *ie_start;
1206         size_t total_len;
1207
1208         /* pointers to IEs */
1209         const u8 *ssid;
1210         const u8 *supp_rates;
1211         const u8 *ds_params;
1212         const struct ieee80211_tim_ie *tim;
1213         const u8 *challenge;
1214         const u8 *rsn;
1215         const u8 *erp_info;
1216         const u8 *ext_supp_rates;
1217         const u8 *wmm_info;
1218         const u8 *wmm_param;
1219         const struct ieee80211_ht_cap *ht_cap_elem;
1220         const struct ieee80211_ht_operation *ht_operation;
1221         const struct ieee80211_vht_cap *vht_cap_elem;
1222         const struct ieee80211_vht_operation *vht_operation;
1223         const struct ieee80211_meshconf_ie *mesh_config;
1224         const u8 *mesh_id;
1225         const u8 *peering;
1226         const __le16 *awake_window;
1227         const u8 *preq;
1228         const u8 *prep;
1229         const u8 *perr;
1230         const struct ieee80211_rann_ie *rann;
1231         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1232         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1233         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1234         const u8 *country_elem;
1235         const u8 *pwr_constr_elem;
1236         const struct ieee80211_timeout_interval_ie *timeout_int;
1237         const u8 *opmode_notif;
1238         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1239
1240         /* length of them, respectively */
1241         u8 ssid_len;
1242         u8 supp_rates_len;
1243         u8 tim_len;
1244         u8 challenge_len;
1245         u8 rsn_len;
1246         u8 ext_supp_rates_len;
1247         u8 wmm_info_len;
1248         u8 wmm_param_len;
1249         u8 mesh_id_len;
1250         u8 peering_len;
1251         u8 preq_len;
1252         u8 prep_len;
1253         u8 perr_len;
1254         u8 country_elem_len;
1255
1256         /* whether a parse error occurred while retrieving these elements */
1257         bool parse_error;
1258 };
1259
1260 static inline struct ieee80211_local *hw_to_local(
1261         struct ieee80211_hw *hw)
1262 {
1263         return container_of(hw, struct ieee80211_local, hw);
1264 }
1265
1266
1267 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1268 {
1269         return ether_addr_equal(raddr, addr) ||
1270                is_broadcast_ether_addr(raddr);
1271 }
1272
1273 static inline bool
1274 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1275 {
1276         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1277                      status->flag & RX_FLAG_MACTIME_END);
1278         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1279 }
1280
1281 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1282                                      struct ieee80211_rx_status *status,
1283                                      unsigned int mpdu_len,
1284                                      unsigned int mpdu_offset);
1285 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1286 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1287 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1288                                       u32 changed);
1289 void ieee80211_configure_filter(struct ieee80211_local *local);
1290 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1291
1292 /* STA code */
1293 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1294 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1295                        struct cfg80211_auth_request *req);
1296 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1297                         struct cfg80211_assoc_request *req);
1298 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1299                          struct cfg80211_deauth_request *req);
1300 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1301                            struct cfg80211_disassoc_request *req);
1302 void ieee80211_send_pspoll(struct ieee80211_local *local,
1303                            struct ieee80211_sub_if_data *sdata);
1304 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1305 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1306 int ieee80211_max_network_latency(struct notifier_block *nb,
1307                                   unsigned long data, void *dummy);
1308 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1309 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1310 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1311                                   struct sk_buff *skb);
1312 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1313 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1314 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1315 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1316                                   __le16 fc, bool acked);
1317 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1318
1319 /* IBSS code */
1320 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1321 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1322 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1323                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1324 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1325                         struct cfg80211_ibss_params *params);
1326 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1327 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1328 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1329                                    struct sk_buff *skb);
1330
1331 /* mesh code */
1332 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1333 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1334                                    struct sk_buff *skb);
1335
1336 /* scan/BSS handling */
1337 void ieee80211_scan_work(struct work_struct *work);
1338 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1339                                 const u8 *ssid, u8 ssid_len,
1340                                 struct ieee80211_channel *chan);
1341 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1342                            struct cfg80211_scan_request *req);
1343 void ieee80211_scan_cancel(struct ieee80211_local *local);
1344 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1345 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1346
1347 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1348 struct ieee80211_bss *
1349 ieee80211_bss_info_update(struct ieee80211_local *local,
1350                           struct ieee80211_rx_status *rx_status,
1351                           struct ieee80211_mgmt *mgmt,
1352                           size_t len,
1353                           struct ieee802_11_elems *elems,
1354                           struct ieee80211_channel *channel);
1355 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1356                           struct ieee80211_bss *bss);
1357
1358 /* scheduled scan handling */
1359 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1360                                        struct cfg80211_sched_scan_request *req);
1361 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1362 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1363
1364 /* off-channel helpers */
1365 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1366 void ieee80211_offchannel_return(struct ieee80211_local *local);
1367 void ieee80211_roc_setup(struct ieee80211_local *local);
1368 void ieee80211_start_next_roc(struct ieee80211_local *local);
1369 void ieee80211_roc_purge(struct ieee80211_local *local,
1370                          struct ieee80211_sub_if_data *sdata);
1371 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1372 void ieee80211_sw_roc_work(struct work_struct *work);
1373 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1374
1375 /* interface handling */
1376 int ieee80211_iface_init(void);
1377 void ieee80211_iface_exit(void);
1378 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1379                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1380                      struct vif_params *params);
1381 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1382                              enum nl80211_iftype type);
1383 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1384 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1385 u32 ieee80211_idle_off(struct ieee80211_local *local);
1386 void ieee80211_recalc_idle(struct ieee80211_local *local);
1387 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1388                                     const int offset);
1389 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1390 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1391 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1392 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1393
1394 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1395 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1396
1397 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1398 {
1399         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1400 }
1401
1402 /* tx handling */
1403 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1404 void ieee80211_tx_pending(unsigned long data);
1405 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1406                                          struct net_device *dev);
1407 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1408                                        struct net_device *dev);
1409 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1410                               struct sk_buff_head *skbs);
1411
1412 /* HT */
1413 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1414                                      struct ieee80211_sta_ht_cap *ht_cap);
1415 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1416                                        struct ieee80211_supported_band *sband,
1417                                        const struct ieee80211_ht_cap *ht_cap_ie,
1418                                        struct sta_info *sta);
1419 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1420                           const u8 *da, u16 tid,
1421                           u16 initiator, u16 reason_code);
1422 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1423                                enum ieee80211_smps_mode smps, const u8 *da,
1424                                const u8 *bssid);
1425 void ieee80211_request_smps_work(struct work_struct *work);
1426
1427 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1428                                      u16 initiator, u16 reason, bool stop);
1429 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1430                                     u16 initiator, u16 reason, bool stop);
1431 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1432                                          enum ieee80211_agg_stop_reason reason);
1433 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1434                              struct sta_info *sta,
1435                              struct ieee80211_mgmt *mgmt, size_t len);
1436 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1437                                   struct sta_info *sta,
1438                                   struct ieee80211_mgmt *mgmt,
1439                                   size_t len);
1440 void ieee80211_process_addba_request(struct ieee80211_local *local,
1441                                      struct sta_info *sta,
1442                                      struct ieee80211_mgmt *mgmt,
1443                                      size_t len);
1444
1445 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1446                                    enum ieee80211_agg_stop_reason reason);
1447 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1448                                     enum ieee80211_agg_stop_reason reason);
1449 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1450 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1451 void ieee80211_ba_session_work(struct work_struct *work);
1452 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1453 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1454
1455 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1456
1457 /* VHT */
1458 void
1459 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1460                                     struct ieee80211_supported_band *sband,
1461                                     const struct ieee80211_vht_cap *vht_cap_ie,
1462                                     struct sta_info *sta);
1463 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1464 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1465 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1466                                  struct sta_info *sta, u8 opmode,
1467                                  enum ieee80211_band band, bool nss_only);
1468 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1469                                       struct ieee80211_sta_vht_cap *vht_cap);
1470
1471 /* Spectrum management */
1472 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1473                                        struct ieee80211_mgmt *mgmt,
1474                                        size_t len);
1475
1476 /* Suspend/resume and hw reconfiguration */
1477 int ieee80211_reconfig(struct ieee80211_local *local);
1478 void ieee80211_stop_device(struct ieee80211_local *local);
1479
1480 int __ieee80211_suspend(struct ieee80211_hw *hw,
1481                         struct cfg80211_wowlan *wowlan);
1482
1483 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1484 {
1485         struct ieee80211_local *local = hw_to_local(hw);
1486
1487         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1488                 "%s: resume with hardware scan still in progress\n",
1489                 wiphy_name(hw->wiphy));
1490
1491         return ieee80211_reconfig(hw_to_local(hw));
1492 }
1493
1494 /* utility functions/constants */
1495 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1496 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1497                         enum nl80211_iftype type);
1498 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1499                              int rate, int erp, int short_preamble,
1500                              int shift);
1501 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1502                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1503                                      gfp_t gfp);
1504 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1505                                bool bss_notify);
1506 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1507                     enum ieee80211_band band);
1508
1509 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1510                                  struct sk_buff *skb, int tid,
1511                                  enum ieee80211_band band);
1512
1513 static inline void
1514 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1515                           struct sk_buff *skb, int tid,
1516                           enum ieee80211_band band)
1517 {
1518         rcu_read_lock();
1519         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1520         rcu_read_unlock();
1521 }
1522
1523 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1524                                         struct sk_buff *skb, int tid)
1525 {
1526         struct ieee80211_chanctx_conf *chanctx_conf;
1527
1528         rcu_read_lock();
1529         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1530         if (WARN_ON(!chanctx_conf)) {
1531                 rcu_read_unlock();
1532                 kfree_skb(skb);
1533                 return;
1534         }
1535
1536         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1537                                     chanctx_conf->def.chan->band);
1538         rcu_read_unlock();
1539 }
1540
1541 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1542                                     struct sk_buff *skb)
1543 {
1544         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1545         ieee80211_tx_skb_tid(sdata, skb, 7);
1546 }
1547
1548 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1549                                struct ieee802_11_elems *elems,
1550                                u64 filter, u32 crc);
1551 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1552                                           bool action,
1553                                           struct ieee802_11_elems *elems)
1554 {
1555         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1556 }
1557
1558 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1559 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1560 void ieee80211_dynamic_ps_timer(unsigned long data);
1561 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1562                              struct ieee80211_sub_if_data *sdata,
1563                              int powersave);
1564 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1565                              struct ieee80211_hdr *hdr);
1566 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1567                              struct ieee80211_hdr *hdr, bool ack);
1568
1569 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1570                                      unsigned long queues,
1571                                      enum queue_stop_reason reason);
1572 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1573                                      unsigned long queues,
1574                                      enum queue_stop_reason reason);
1575 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1576                                     enum queue_stop_reason reason);
1577 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1578                                     enum queue_stop_reason reason);
1579 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1580 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1581                                struct sk_buff *skb);
1582 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1583                                    struct sk_buff_head *skbs,
1584                                    void (*fn)(void *data), void *data);
1585 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1586                                               struct sk_buff_head *skbs)
1587 {
1588         ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1589 }
1590 void ieee80211_flush_queues(struct ieee80211_local *local,
1591                             struct ieee80211_sub_if_data *sdata);
1592
1593 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1594                          u16 transaction, u16 auth_alg, u16 status,
1595                          const u8 *extra, size_t extra_len, const u8 *bssid,
1596                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1597                          u32 tx_flags);
1598 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1599                                     const u8 *bssid, u16 stype, u16 reason,
1600                                     bool send_frame, u8 *frame_buf);
1601 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1602                              size_t buffer_len, const u8 *ie, size_t ie_len,
1603                              enum ieee80211_band band, u32 rate_mask,
1604                              struct cfg80211_chan_def *chandef);
1605 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1606                                           u8 *dst, u32 ratemask,
1607                                           struct ieee80211_channel *chan,
1608                                           const u8 *ssid, size_t ssid_len,
1609                                           const u8 *ie, size_t ie_len,
1610                                           bool directed);
1611 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1612                               const u8 *ssid, size_t ssid_len,
1613                               const u8 *ie, size_t ie_len,
1614                               u32 ratemask, bool directed, u32 tx_flags,
1615                               struct ieee80211_channel *channel, bool scan);
1616
1617 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1618                                   const size_t supp_rates_len,
1619                                   const u8 *supp_rates);
1620 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1621                             struct ieee802_11_elems *elems,
1622                             enum ieee80211_band band, u32 *basic_rates);
1623 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1624                              enum ieee80211_smps_mode smps_mode);
1625 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1626
1627 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1628                           const u8 *ids, int n_ids, size_t offset);
1629 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1630 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1631                               u16 cap);
1632 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1633                                const struct cfg80211_chan_def *chandef,
1634                                u16 prot_mode);
1635 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1636                                u32 cap);
1637 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1638                              const struct ieee80211_supported_band *sband,
1639                              const u8 *srates, int srates_len, u32 *rates);
1640 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1641                             struct sk_buff *skb, bool need_basic,
1642                             enum ieee80211_band band);
1643 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1644                                 struct sk_buff *skb, bool need_basic,
1645                                 enum ieee80211_band band);
1646
1647 /* channel management */
1648 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1649                                   const struct ieee80211_ht_operation *ht_oper,
1650                                   struct cfg80211_chan_def *chandef);
1651
1652 int __must_check
1653 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1654                           const struct cfg80211_chan_def *chandef,
1655                           enum ieee80211_chanctx_mode mode);
1656 int __must_check
1657 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1658                                const struct cfg80211_chan_def *chandef,
1659                                u32 *changed);
1660 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1661 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1662 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1663                                          bool clear);
1664
1665 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1666                                    struct ieee80211_chanctx *chanctx);
1667 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1668                                     struct ieee80211_chanctx *chanctx);
1669
1670 void ieee80211_dfs_cac_timer(unsigned long data);
1671 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1672 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1673 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1674
1675 #ifdef CONFIG_MAC80211_NOINLINE
1676 #define debug_noinline noinline
1677 #else
1678 #define debug_noinline
1679 #endif
1680
1681 #endif /* IEEE80211_I_H */