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 2007-2008  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 <net/cfg80211.h>
  27 #include <net/iw_handler.h>
  28 #include <net/mac80211.h>
  29 #include "key.h"
  30 #include "sta_info.h"
  31
  32 struct ieee80211_local;
  33
  34 /* Maximum number of broadcast/multicast frames to buffer when some of the
  35  * associated stations are using power saving. */
  36 #define AP_MAX_BC_BUFFER 128
  37
  38 /* Maximum number of frames buffered to all STAs, including multicast frames.
  39  * Note: increasing this limit increases the potential memory requirement. Each
  40  * frame can be up to about 2 kB long. */
  41 #define TOTAL_MAX_TX_BUFFER 512
  42
  43 /* Required encryption head and tailroom */
  44 #define IEEE80211_ENCRYPT_HEADROOM 8
  45 #define IEEE80211_ENCRYPT_TAILROOM 18
  46
  47 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  48  * reception of at least three fragmented frames. This limit can be increased
  49  * by changing this define, at the cost of slower frame reassembly and
  50  * increased memory use (about 2 kB of RAM per entry). */
  51 #define IEEE80211_FRAGMENT_MAX 4
  52
  53 /*
  54  * Time after which we ignore scan results and no longer report/use
  55  * them in any way.
  56  */
  57 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
  58
  59 #define TU_TO_EXP_TIME(x)       (jiffies + usecs_to_jiffies((x) * 1024))
  60
  61 struct ieee80211_fragment_entry {
  62         unsigned long first_frag_time;
  63         unsigned int seq;
  64         unsigned int rx_queue;
  65         unsigned int last_frag;
  66         unsigned int extra_len;
  67         struct sk_buff_head skb_list;
  68         int ccmp; /* Whether fragments were encrypted with CCMP */
  69         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  70 };
  71
  72
  73 struct ieee80211_bss {
  74         /* Yes, this is a hack */
  75         struct cfg80211_bss cbss;
  76
  77         /* don't want to look up all the time */
  78         size_t ssid_len;
  79         u8 ssid[IEEE80211_MAX_SSID_LEN];
  80
  81         u8 dtim_period;
  82
  83         bool wmm_used;
  84
  85         unsigned long last_probe_resp;
  86
  87 #ifdef CONFIG_MAC80211_MESH
  88         u8 *mesh_id;
  89         size_t mesh_id_len;
  90         u8 *mesh_cfg;
  91 #endif
  92
  93 #define IEEE80211_MAX_SUPP_RATES 32
  94         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  95         size_t supp_rates_len;
  96
  97         /*
  98          * During assocation, we save an ERP value from a probe response so
  99          * that we can feed ERP info to the driver when handling the
 100          * association completes. these fields probably won't be up-to-date
 101          * otherwise, you probably don't want to use them.
 102          */
 103         bool has_erp_value;
 104         u8 erp_value;
 105 };
 106
 107 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
 108 {
 109 #ifdef CONFIG_MAC80211_MESH
 110         return bss->mesh_cfg;
 111 #endif
 112         return NULL;
 113 }
 114
 115 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
 116 {
 117 #ifdef CONFIG_MAC80211_MESH
 118         return bss->mesh_id;
 119 #endif
 120         return NULL;
 121 }
 122
 123 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
 124 {
 125 #ifdef CONFIG_MAC80211_MESH
 126         return bss->mesh_id_len;
 127 #endif
 128         return 0;
 129 }
 130
 131
 132 typedef unsigned __bitwise__ ieee80211_tx_result;
 133 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
 134 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 135 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 136
 137 #define IEEE80211_TX_FRAGMENTED         BIT(0)
 138 #define IEEE80211_TX_UNICAST            BIT(1)
 139 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 140
 141 struct ieee80211_tx_data {
 142         struct sk_buff *skb;
 143         struct net_device *dev;
 144         struct ieee80211_local *local;
 145         struct ieee80211_sub_if_data *sdata;
 146         struct sta_info *sta;
 147         struct ieee80211_key *key;
 148
 149         struct ieee80211_channel *channel;
 150
 151         u16 ethertype;
 152         unsigned int flags;
 153 };
 154
 155
 156 typedef unsigned __bitwise__ ieee80211_rx_result;
 157 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
 158 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
 159 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
 160 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
 161
 162 #define IEEE80211_RX_IN_SCAN            BIT(0)
 163 /* frame is destined to interface currently processed (incl. multicast frames) */
 164 #define IEEE80211_RX_RA_MATCH           BIT(1)
 165 #define IEEE80211_RX_AMSDU              BIT(2)
 166 #define IEEE80211_RX_CMNTR_REPORTED     BIT(3)
 167 #define IEEE80211_RX_FRAGMENTED         BIT(4)
 168
 169 struct ieee80211_rx_data {
 170         struct sk_buff *skb;
 171         struct net_device *dev;
 172         struct ieee80211_local *local;
 173         struct ieee80211_sub_if_data *sdata;
 174         struct sta_info *sta;
 175         struct ieee80211_key *key;
 176         struct ieee80211_rx_status *status;
 177         struct ieee80211_rate *rate;
 178
 179         unsigned int flags;
 180         int sent_ps_buffered;
 181         int queue;
 182         u32 tkip_iv32;
 183         u16 tkip_iv16;
 184 };
 185
 186 struct beacon_data {
 187         u8 *head, *tail;
 188         int head_len, tail_len;
 189         int dtim_period;
 190 };
 191
 192 struct ieee80211_if_ap {
 193         struct beacon_data *beacon;
 194
 195         struct list_head vlans;
 196
 197         /* yes, this looks ugly, but guarantees that we can later use
 198          * bitmap_empty :)
 199          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
 200         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 201         struct sk_buff_head ps_bc_buf;
 202         atomic_t num_sta_ps; /* number of stations in PS mode */
 203         int dtim_count;
 204 };
 205
 206 struct ieee80211_if_wds {
 207         struct sta_info *sta;
 208         u8 remote_addr[ETH_ALEN];
 209 };
 210
 211 struct ieee80211_if_vlan {
 212         struct list_head list;
 213 };
 214
 215 struct mesh_stats {
 216         __u32 fwded_frames;             /* Mesh forwarded frames */
 217         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
 218         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
 219         atomic_t estab_plinks;
 220 };
 221
 222 #define PREQ_Q_F_START          0x1
 223 #define PREQ_Q_F_REFRESH        0x2
 224 struct mesh_preq_queue {
 225         struct list_head list;
 226         u8 dst[ETH_ALEN];
 227         u8 flags;
 228 };
 229
 230 /* flags used in struct ieee80211_if_managed.flags */
 231 #define IEEE80211_STA_SSID_SET          BIT(0)
 232 #define IEEE80211_STA_BSSID_SET         BIT(1)
 233 #define IEEE80211_STA_PREV_BSSID_SET    BIT(2)
 234 #define IEEE80211_STA_AUTHENTICATED     BIT(3)
 235 #define IEEE80211_STA_ASSOCIATED        BIT(4)
 236 #define IEEE80211_STA_PROBEREQ_POLL     BIT(5)
 237 #define IEEE80211_STA_CREATE_IBSS       BIT(6)
 238 /* hole at 7, please re-use */
 239 #define IEEE80211_STA_WMM_ENABLED       BIT(8)
 240 /* hole at 9, please re-use */
 241 #define IEEE80211_STA_AUTO_SSID_SEL     BIT(10)
 242 #define IEEE80211_STA_AUTO_BSSID_SEL    BIT(11)
 243 #define IEEE80211_STA_AUTO_CHANNEL_SEL  BIT(12)
 244 #define IEEE80211_STA_PRIVACY_INVOKED   BIT(13)
 245 #define IEEE80211_STA_TKIP_WEP_USED     BIT(14)
 246 #define IEEE80211_STA_CSA_RECEIVED      BIT(15)
 247 #define IEEE80211_STA_MFP_ENABLED       BIT(16)
 248 #define IEEE80211_STA_EXT_SME           BIT(17)
 249 /* flags for MLME request */
 250 #define IEEE80211_STA_REQ_SCAN 0
 251 #define IEEE80211_STA_REQ_AUTH 1
 252 #define IEEE80211_STA_REQ_RUN  2
 253
 254 /* bitfield of allowed auth algs */
 255 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
 256 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
 257 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
 258 #define IEEE80211_AUTH_ALG_FT BIT(3)
 259
 260 struct ieee80211_if_managed {
 261         struct timer_list timer;
 262         struct timer_list chswitch_timer;
 263         struct work_struct work;
 264         struct work_struct chswitch_work;
 265         struct work_struct beacon_loss_work;
 266
 267         u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
 268
 269         u8 ssid[IEEE80211_MAX_SSID_LEN];
 270         size_t ssid_len;
 271
 272         enum {
 273                 IEEE80211_STA_MLME_DISABLED,
 274                 IEEE80211_STA_MLME_DIRECT_PROBE,
 275                 IEEE80211_STA_MLME_AUTHENTICATE,
 276                 IEEE80211_STA_MLME_ASSOCIATE,
 277                 IEEE80211_STA_MLME_ASSOCIATED,
 278         } state;
 279
 280         u16 aid;
 281         u16 ap_capab, capab;
 282         u8 *extra_ie; /* to be added to the end of AssocReq */
 283         size_t extra_ie_len;
 284
 285         /* The last AssocReq/Resp IEs */
 286         u8 *assocreq_ies, *assocresp_ies;
 287         size_t assocreq_ies_len, assocresp_ies_len;
 288
 289         struct sk_buff_head skb_queue;
 290
 291         int assoc_scan_tries; /* number of scans done pre-association */
 292         int direct_probe_tries; /* retries for direct probes */
 293         int auth_tries; /* retries for auth req */
 294         int assoc_tries; /* retries for assoc req */
 295
 296         bool powersave; /* powersave requested for this iface */
 297
 298         unsigned long request;
 299
 300         unsigned long last_probe;
 301         unsigned long last_beacon;
 302
 303         unsigned int flags;
 304
 305         unsigned int auth_algs; /* bitfield of allowed auth algs */
 306         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 307         int auth_transaction;
 308
 309         u32 beacon_crc;
 310
 311         enum {
 312                 IEEE80211_MFP_DISABLED,
 313                 IEEE80211_MFP_OPTIONAL,
 314                 IEEE80211_MFP_REQUIRED
 315         } mfp; /* management frame protection */
 316
 317         int wmm_last_param_set;
 318
 319         /* Extra IE data for management frames */
 320         u8 *sme_auth_ie;
 321         size_t sme_auth_ie_len;
 322 };
 323
 324 enum ieee80211_ibss_request {
 325         IEEE80211_IBSS_REQ_RUN  = 0,
 326 };
 327
 328 struct ieee80211_if_ibss {
 329         struct timer_list timer;
 330         struct work_struct work;
 331
 332         struct sk_buff_head skb_queue;
 333
 334         unsigned long request;
 335         unsigned long last_scan_completed;
 336         bool fixed_bssid;
 337         bool fixed_channel;
 338
 339         u8 bssid[ETH_ALEN];
 340         u8 ssid[IEEE80211_MAX_SSID_LEN];
 341         u8 ssid_len, ie_len;
 342         u8 *ie;
 343         struct ieee80211_channel *channel;
 344
 345         unsigned long ibss_join_req;
 346         /* probe response/beacon for IBSS */
 347         struct sk_buff *presp, *skb;
 348
 349         enum {
 350                 IEEE80211_IBSS_MLME_SEARCH,
 351                 IEEE80211_IBSS_MLME_JOINED,
 352         } state;
 353 };
 354
 355 struct ieee80211_if_mesh {
 356         struct work_struct work;
 357         struct timer_list housekeeping_timer;
 358         struct timer_list mesh_path_timer;
 359         struct sk_buff_head skb_queue;
 360
 361         bool housekeeping;
 362
 363         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 364         size_t mesh_id_len;
 365         /* Active Path Selection Protocol Identifier */
 366         u8 mesh_pp_id[4];
 367         /* Active Path Selection Metric Identifier */
 368         u8 mesh_pm_id[4];
 369         /* Congestion Control Mode Identifier */
 370         u8 mesh_cc_id[4];
 371         /* Local mesh Destination Sequence Number */
 372         u32 dsn;
 373         /* Last used PREQ ID */
 374         u32 preq_id;
 375         atomic_t mpaths;
 376         /* Timestamp of last DSN update */
 377         unsigned long last_dsn_update;
 378         /* Timestamp of last DSN sent */
 379         unsigned long last_preq;
 380         struct mesh_rmc *rmc;
 381         spinlock_t mesh_preq_queue_lock;
 382         struct mesh_preq_queue preq_queue;
 383         int preq_queue_len;
 384         struct mesh_stats mshstats;
 385         struct mesh_config mshcfg;
 386         u32 mesh_seqnum;
 387         bool accepting_plinks;
 388 };
 389
 390 #ifdef CONFIG_MAC80211_MESH
 391 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 392         do { (msh)->mshstats.name++; } while (0)
 393 #else
 394 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
 395         do { } while (0)
 396 #endif
 397
 398 /**
 399  * enum ieee80211_sub_if_data_flags - virtual interface flags
 400  *
 401  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 402  * @IEEE80211_SDATA_PROMISC: interface is promisc
 403  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 404  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 405  *      associated stations and deliver multicast frames both
 406  *      back to wireless media and to the local net stack.
 407  */
 408 enum ieee80211_sub_if_data_flags {
 409         IEEE80211_SDATA_ALLMULTI                = BIT(0),
 410         IEEE80211_SDATA_PROMISC                 = BIT(1),
 411         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
 412         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
 413 };
 414
 415 struct ieee80211_sub_if_data {
 416         struct list_head list;
 417
 418         struct wireless_dev wdev;
 419
 420         /* keys */
 421         struct list_head key_list;
 422
 423         struct net_device *dev;
 424         struct ieee80211_local *local;
 425
 426         unsigned int flags;
 427
 428         int drop_unencrypted;
 429
 430         /* Fragment table for host-based reassembly */
 431         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 432         unsigned int fragment_next;
 433
 434 #define NUM_DEFAULT_KEYS 4
 435 #define NUM_DEFAULT_MGMT_KEYS 2
 436         struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
 437         struct ieee80211_key *default_key;
 438         struct ieee80211_key *default_mgmt_key;
 439
 440         u16 sequence_number;
 441
 442         /*
 443          * AP this belongs to: self in AP mode and
 444          * corresponding AP in VLAN mode, NULL for
 445          * all others (might be needed later in IBSS)
 446          */
 447         struct ieee80211_if_ap *bss;
 448
 449         int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
 450         int max_ratectrl_rateidx; /* max TX rateidx for rate control */
 451
 452         union {
 453                 struct ieee80211_if_ap ap;
 454                 struct ieee80211_if_wds wds;
 455                 struct ieee80211_if_vlan vlan;
 456                 struct ieee80211_if_managed mgd;
 457                 struct ieee80211_if_ibss ibss;
 458 #ifdef CONFIG_MAC80211_MESH
 459                 struct ieee80211_if_mesh mesh;
 460 #endif
 461                 u32 mntr_flags;
 462         } u;
 463
 464 #ifdef CONFIG_MAC80211_DEBUGFS
 465         struct dentry *debugfsdir;
 466         union {
 467                 struct {
 468                         struct dentry *drop_unencrypted;
 469                         struct dentry *state;
 470                         struct dentry *bssid;
 471                         struct dentry *prev_bssid;
 472                         struct dentry *ssid_len;
 473                         struct dentry *aid;
 474                         struct dentry *ap_capab;
 475                         struct dentry *capab;
 476                         struct dentry *extra_ie_len;
 477                         struct dentry *auth_tries;
 478                         struct dentry *assoc_tries;
 479                         struct dentry *auth_algs;
 480                         struct dentry *auth_alg;
 481                         struct dentry *auth_transaction;
 482                         struct dentry *flags;
 483                         struct dentry *force_unicast_rateidx;
 484                         struct dentry *max_ratectrl_rateidx;
 485                 } sta;
 486                 struct {
 487                         struct dentry *drop_unencrypted;
 488                         struct dentry *num_sta_ps;
 489                         struct dentry *dtim_count;
 490                         struct dentry *force_unicast_rateidx;
 491                         struct dentry *max_ratectrl_rateidx;
 492                         struct dentry *num_buffered_multicast;
 493                 } ap;
 494                 struct {
 495                         struct dentry *drop_unencrypted;
 496                         struct dentry *peer;
 497                         struct dentry *force_unicast_rateidx;
 498                         struct dentry *max_ratectrl_rateidx;
 499                 } wds;
 500                 struct {
 501                         struct dentry *drop_unencrypted;
 502                         struct dentry *force_unicast_rateidx;
 503                         struct dentry *max_ratectrl_rateidx;
 504                 } vlan;
 505                 struct {
 506                         struct dentry *mode;
 507                 } monitor;
 508         } debugfs;
 509         struct {
 510                 struct dentry *default_key;
 511                 struct dentry *default_mgmt_key;
 512         } common_debugfs;
 513
 514 #ifdef CONFIG_MAC80211_MESH
 515         struct dentry *mesh_stats_dir;
 516         struct {
 517                 struct dentry *fwded_frames;
 518                 struct dentry *dropped_frames_ttl;
 519                 struct dentry *dropped_frames_no_route;
 520                 struct dentry *estab_plinks;
 521                 struct timer_list mesh_path_timer;
 522         } mesh_stats;
 523
 524         struct dentry *mesh_config_dir;
 525         struct {
 526                 struct dentry *dot11MeshRetryTimeout;
 527                 struct dentry *dot11MeshConfirmTimeout;
 528                 struct dentry *dot11MeshHoldingTimeout;
 529                 struct dentry *dot11MeshMaxRetries;
 530                 struct dentry *dot11MeshTTL;
 531                 struct dentry *auto_open_plinks;
 532                 struct dentry *dot11MeshMaxPeerLinks;
 533                 struct dentry *dot11MeshHWMPactivePathTimeout;
 534                 struct dentry *dot11MeshHWMPpreqMinInterval;
 535                 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
 536                 struct dentry *dot11MeshHWMPmaxPREQretries;
 537                 struct dentry *path_refresh_time;
 538                 struct dentry *min_discovery_timeout;
 539         } mesh_config;
 540 #endif
 541
 542 #endif
 543         /* must be last, dynamically sized area in this! */
 544         struct ieee80211_vif vif;
 545 };
 546
 547 static inline
 548 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
 549 {
 550         return container_of(p, struct ieee80211_sub_if_data, vif);
 551 }
 552
 553 static inline void
 554 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
 555                             u8 mesh_id_len, u8 *mesh_id)
 556 {
 557 #ifdef CONFIG_MAC80211_MESH
 558         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 559         ifmsh->mesh_id_len = mesh_id_len;
 560         memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
 561 #else
 562         WARN_ON(1);
 563 #endif
 564 }
 565
 566 enum {
 567         IEEE80211_RX_MSG        = 1,
 568         IEEE80211_TX_STATUS_MSG = 2,
 569         IEEE80211_DELBA_MSG     = 3,
 570         IEEE80211_ADDBA_MSG     = 4,
 571 };
 572
 573 enum queue_stop_reason {
 574         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 575         IEEE80211_QUEUE_STOP_REASON_PS,
 576         IEEE80211_QUEUE_STOP_REASON_CSA,
 577         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
 578         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 579         IEEE80211_QUEUE_STOP_REASON_PENDING,
 580 };
 581
 582 struct ieee80211_master_priv {
 583         struct ieee80211_local *local;
 584 };
 585
 586 struct ieee80211_local {
 587         /* embed the driver visible part.
 588          * don't cast (use the static inlines below), but we keep
 589          * it first anyway so they become a no-op */
 590         struct ieee80211_hw hw;
 591
 592         const struct ieee80211_ops *ops;
 593
 594         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
 595         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 596         spinlock_t queue_stop_reason_lock;
 597
 598         struct net_device *mdev; /* wmaster# - "master" 802.11 device */
 599         int open_count;
 600         int monitors, cooked_mntrs;
 601         /* number of interfaces with corresponding FIF_ flags */
 602         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
 603         unsigned int filter_flags; /* FIF_* */
 604         struct iw_statistics wstats;
 605         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
 606         int tx_headroom; /* required headroom for hardware/radiotap */
 607
 608         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 609          * added to skb_queue will be processed, but frames in
 610          * skb_queue_unreliable may be dropped if the total length of these
 611          * queues increases over the limit. */
 612 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 613         struct tasklet_struct tasklet;
 614         struct sk_buff_head skb_queue;
 615         struct sk_buff_head skb_queue_unreliable;
 616
 617         /* Station data */
 618         /*
 619          * The lock only protects the list, hash, timer and counter
 620          * against manipulation, reads are done in RCU. Additionally,
 621          * the lock protects each BSS's TIM bitmap.
 622          */
 623         spinlock_t sta_lock;
 624         unsigned long num_sta;
 625         struct list_head sta_list;
 626         struct sta_info *sta_hash[STA_HASH_SIZE];
 627         struct timer_list sta_cleanup;
 628
 629         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
 630         struct tasklet_struct tx_pending_tasklet;
 631
 632         /*
 633          * This lock is used to prevent concurrent A-MPDU
 634          * session start/stop processing, this thus also
 635          * synchronises the ->ampdu_action() callback to
 636          * drivers and limits it to one at a time.
 637          */
 638         spinlock_t ampdu_lock;
 639
 640         /* number of interfaces with corresponding IFF_ flags */
 641         atomic_t iff_allmultis, iff_promiscs;
 642
 643         struct rate_control_ref *rate_ctrl;
 644
 645         struct crypto_blkcipher *wep_tx_tfm;
 646         struct crypto_blkcipher *wep_rx_tfm;
 647         u32 wep_iv;
 648
 649         /* see iface.c */
 650         struct list_head interfaces;
 651         struct mutex iflist_mtx;
 652
 653         /*
 654          * Key lock, protects sdata's key_list and sta_info's
 655          * key pointers (write access, they're RCU.)
 656          */
 657         spinlock_t key_lock;
 658
 659
 660         /* Scanning and BSS list */
 661         struct mutex scan_mtx;
 662         bool sw_scanning, hw_scanning;
 663         struct cfg80211_ssid scan_ssid;
 664         struct cfg80211_scan_request int_scan_req;
 665         struct cfg80211_scan_request *scan_req;
 666         struct ieee80211_channel *scan_channel;
 667         const u8 *orig_ies;
 668         int orig_ies_len;
 669         int scan_channel_idx;
 670         int scan_ies_len;
 671
 672         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 673         struct delayed_work scan_work;
 674         struct ieee80211_sub_if_data *scan_sdata;
 675         enum nl80211_channel_type oper_channel_type;
 676         struct ieee80211_channel *oper_channel, *csa_channel;
 677
 678         /* SNMP counters */
 679         /* dot11CountersTable */
 680         u32 dot11TransmittedFragmentCount;
 681         u32 dot11MulticastTransmittedFrameCount;
 682         u32 dot11FailedCount;
 683         u32 dot11RetryCount;
 684         u32 dot11MultipleRetryCount;
 685         u32 dot11FrameDuplicateCount;
 686         u32 dot11ReceivedFragmentCount;
 687         u32 dot11MulticastReceivedFrameCount;
 688         u32 dot11TransmittedFrameCount;
 689
 690 #ifdef CONFIG_MAC80211_LEDS
 691         int tx_led_counter, rx_led_counter;
 692         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
 693         char tx_led_name[32], rx_led_name[32],
 694              assoc_led_name[32], radio_led_name[32];
 695 #endif
 696
 697 #ifdef CONFIG_MAC80211_DEBUGFS
 698         struct work_struct sta_debugfs_add;
 699 #endif
 700
 701 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 702         /* TX/RX handler statistics */
 703         unsigned int tx_handlers_drop;
 704         unsigned int tx_handlers_queued;
 705         unsigned int tx_handlers_drop_unencrypted;
 706         unsigned int tx_handlers_drop_fragment;
 707         unsigned int tx_handlers_drop_wep;
 708         unsigned int tx_handlers_drop_not_assoc;
 709         unsigned int tx_handlers_drop_unauth_port;
 710         unsigned int rx_handlers_drop;
 711         unsigned int rx_handlers_queued;
 712         unsigned int rx_handlers_drop_nullfunc;
 713         unsigned int rx_handlers_drop_defrag;
 714         unsigned int rx_handlers_drop_short;
 715         unsigned int rx_handlers_drop_passive_scan;
 716         unsigned int tx_expand_skb_head;
 717         unsigned int tx_expand_skb_head_cloned;
 718         unsigned int rx_expand_skb_head;
 719         unsigned int rx_expand_skb_head2;
 720         unsigned int rx_handlers_fragments;
 721         unsigned int tx_status_drop;
 722 #define I802_DEBUG_INC(c) (c)++
 723 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 724 #define I802_DEBUG_INC(c) do { } while (0)
 725 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 726
 727
 728         int total_ps_buffered; /* total number of all buffered unicast and
 729                                 * multicast packets for power saving stations
 730                                 */
 731         int wifi_wme_noack_test;
 732         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 733
 734         bool pspolling;
 735         /*
 736          * PS can only be enabled when we have exactly one managed
 737          * interface (and monitors) in PS, this then points there.
 738          */
 739         struct ieee80211_sub_if_data *ps_sdata;
 740         struct work_struct dynamic_ps_enable_work;
 741         struct work_struct dynamic_ps_disable_work;
 742         struct timer_list dynamic_ps_timer;
 743         struct notifier_block network_latency_notifier;
 744
 745         int user_power_level; /* in dBm */
 746         int power_constr_level; /* in dBm */
 747
 748         struct work_struct restart_work;
 749
 750 #ifdef CONFIG_MAC80211_DEBUGFS
 751         struct local_debugfsdentries {
 752                 struct dentry *rcdir;
 753                 struct dentry *rcname;
 754                 struct dentry *frequency;
 755                 struct dentry *rts_threshold;
 756                 struct dentry *fragmentation_threshold;
 757                 struct dentry *short_retry_limit;
 758                 struct dentry *long_retry_limit;
 759                 struct dentry *total_ps_buffered;
 760                 struct dentry *wep_iv;
 761                 struct dentry *tsf;
 762                 struct dentry *reset;
 763                 struct dentry *statistics;
 764                 struct local_debugfsdentries_statsdentries {
 765                         struct dentry *transmitted_fragment_count;
 766                         struct dentry *multicast_transmitted_frame_count;
 767                         struct dentry *failed_count;
 768                         struct dentry *retry_count;
 769                         struct dentry *multiple_retry_count;
 770                         struct dentry *frame_duplicate_count;
 771                         struct dentry *received_fragment_count;
 772                         struct dentry *multicast_received_frame_count;
 773                         struct dentry *transmitted_frame_count;
 774                         struct dentry *wep_undecryptable_count;
 775                         struct dentry *num_scans;
 776 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 777                         struct dentry *tx_handlers_drop;
 778                         struct dentry *tx_handlers_queued;
 779                         struct dentry *tx_handlers_drop_unencrypted;
 780                         struct dentry *tx_handlers_drop_fragment;
 781                         struct dentry *tx_handlers_drop_wep;
 782                         struct dentry *tx_handlers_drop_not_assoc;
 783                         struct dentry *tx_handlers_drop_unauth_port;
 784                         struct dentry *rx_handlers_drop;
 785                         struct dentry *rx_handlers_queued;
 786                         struct dentry *rx_handlers_drop_nullfunc;
 787                         struct dentry *rx_handlers_drop_defrag;
 788                         struct dentry *rx_handlers_drop_short;
 789                         struct dentry *rx_handlers_drop_passive_scan;
 790                         struct dentry *tx_expand_skb_head;
 791                         struct dentry *tx_expand_skb_head_cloned;
 792                         struct dentry *rx_expand_skb_head;
 793                         struct dentry *rx_expand_skb_head2;
 794                         struct dentry *rx_handlers_fragments;
 795                         struct dentry *tx_status_drop;
 796 #endif
 797                         struct dentry *dot11ACKFailureCount;
 798                         struct dentry *dot11RTSFailureCount;
 799                         struct dentry *dot11FCSErrorCount;
 800                         struct dentry *dot11RTSSuccessCount;
 801                 } stats;
 802                 struct dentry *stations;
 803                 struct dentry *keys;
 804         } debugfs;
 805 #endif
 806 };
 807
 808 static inline struct ieee80211_sub_if_data *
 809 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
 810 {
 811         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 812
 813         BUG_ON(!local || local->mdev == dev);
 814
 815         return netdev_priv(dev);
 816 }
 817
 818 /* this struct represents 802.11n's RA/TID combination */
 819 struct ieee80211_ra_tid {
 820         u8 ra[ETH_ALEN];
 821         u16 tid;
 822 };
 823
 824 /* Parsed Information Elements */
 825 struct ieee802_11_elems {
 826         u8 *ie_start;
 827         size_t total_len;
 828
 829         /* pointers to IEs */
 830         u8 *ssid;
 831         u8 *supp_rates;
 832         u8 *fh_params;
 833         u8 *ds_params;
 834         u8 *cf_params;
 835         struct ieee80211_tim_ie *tim;
 836         u8 *ibss_params;
 837         u8 *challenge;
 838         u8 *wpa;
 839         u8 *rsn;
 840         u8 *erp_info;
 841         u8 *ext_supp_rates;
 842         u8 *wmm_info;
 843         u8 *wmm_param;
 844         struct ieee80211_ht_cap *ht_cap_elem;
 845         struct ieee80211_ht_info *ht_info_elem;
 846         u8 *mesh_config;
 847         u8 *mesh_id;
 848         u8 *peer_link;
 849         u8 *preq;
 850         u8 *prep;
 851         u8 *perr;
 852         u8 *ch_switch_elem;
 853         u8 *country_elem;
 854         u8 *pwr_constr_elem;
 855         u8 *quiet_elem;         /* first quite element */
 856         u8 *timeout_int;
 857
 858         /* length of them, respectively */
 859         u8 ssid_len;
 860         u8 supp_rates_len;
 861         u8 fh_params_len;
 862         u8 ds_params_len;
 863         u8 cf_params_len;
 864         u8 tim_len;
 865         u8 ibss_params_len;
 866         u8 challenge_len;
 867         u8 wpa_len;
 868         u8 rsn_len;
 869         u8 erp_info_len;
 870         u8 ext_supp_rates_len;
 871         u8 wmm_info_len;
 872         u8 wmm_param_len;
 873         u8 mesh_config_len;
 874         u8 mesh_id_len;
 875         u8 peer_link_len;
 876         u8 preq_len;
 877         u8 prep_len;
 878         u8 perr_len;
 879         u8 ch_switch_elem_len;
 880         u8 country_elem_len;
 881         u8 pwr_constr_elem_len;
 882         u8 quiet_elem_len;
 883         u8 num_of_quiet_elem;   /* can be more the one */
 884         u8 timeout_int_len;
 885 };
 886
 887 static inline struct ieee80211_local *hw_to_local(
 888         struct ieee80211_hw *hw)
 889 {
 890         return container_of(hw, struct ieee80211_local, hw);
 891 }
 892
 893 static inline struct ieee80211_hw *local_to_hw(
 894         struct ieee80211_local *local)
 895 {
 896         return &local->hw;
 897 }
 898
 899
 900 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 901 {
 902         return compare_ether_addr(raddr, addr) == 0 ||
 903                is_broadcast_ether_addr(raddr);
 904 }
 905
 906
 907 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 908 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 909 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 910                                       u32 changed);
 911 void ieee80211_configure_filter(struct ieee80211_local *local);
 912 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 913
 914 /* wireless extensions */
 915 extern const struct iw_handler_def ieee80211_iw_handler_def;
 916
 917 /* STA code */
 918 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 919 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
 920                                           struct sk_buff *skb,
 921                                           struct ieee80211_rx_status *rx_status);
 922 int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
 923 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
 924 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
 925 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
 926 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
 927 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
 928 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
 929 void ieee80211_send_pspoll(struct ieee80211_local *local,
 930                            struct ieee80211_sub_if_data *sdata);
 931 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
 932 int ieee80211_max_network_latency(struct notifier_block *nb,
 933                                   unsigned long data, void *dummy);
 934
 935 /* IBSS code */
 936 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
 937 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
 938 ieee80211_rx_result
 939 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
 940                        struct ieee80211_rx_status *rx_status);
 941 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 942                                         u8 *bssid, u8 *addr, u32 supp_rates);
 943 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 944                         struct cfg80211_ibss_params *params);
 945 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
 946
 947 /* scan/BSS handling */
 948 void ieee80211_scan_work(struct work_struct *work);
 949 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
 950                                     const u8 *ssid, u8 ssid_len);
 951 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
 952                            struct cfg80211_scan_request *req);
 953 int ieee80211_scan_results(struct ieee80211_local *local,
 954                            struct iw_request_info *info,
 955                            char *buf, size_t len);
 956 ieee80211_rx_result
 957 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
 958                   struct sk_buff *skb,
 959                   struct ieee80211_rx_status *rx_status);
 960 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
 961                                const char *ie, size_t len);
 962
 963 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
 964 struct ieee80211_bss *
 965 ieee80211_bss_info_update(struct ieee80211_local *local,
 966                           struct ieee80211_rx_status *rx_status,
 967                           struct ieee80211_mgmt *mgmt,
 968                           size_t len,
 969                           struct ieee802_11_elems *elems,
 970                           struct ieee80211_channel *channel,
 971                           bool beacon);
 972 struct ieee80211_bss *
 973 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
 974                      u8 *ssid, u8 ssid_len);
 975 void ieee80211_rx_bss_put(struct ieee80211_local *local,
 976                           struct ieee80211_bss *bss);
 977 void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
 978                              int freq, u8 *ssid, u8 ssid_len);
 979
 980 /* interface handling */
 981 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 982                      struct net_device **new_dev, enum nl80211_iftype type,
 983                      struct vif_params *params);
 984 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
 985                              enum nl80211_iftype type);
 986 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
 987 void ieee80211_remove_interfaces(struct ieee80211_local *local);
 988 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
 989 void ieee80211_recalc_idle(struct ieee80211_local *local);
 990
 991 /* tx handling */
 992 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
 993 void ieee80211_tx_pending(unsigned long data);
 994 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
 995 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 996 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 997
 998 /* HT */
 999 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1000                                        struct ieee80211_ht_cap *ht_cap_ie,
1001                                        struct ieee80211_sta_ht_cap *ht_cap);
1002 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1003 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1004                           const u8 *da, u16 tid,
1005                           u16 initiator, u16 reason_code);
1006
1007 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1008                                 u16 tid, u16 initiator, u16 reason);
1009 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1010                                     u16 initiator, u16 reason);
1011 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1012 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1013                              struct sta_info *sta,
1014                              struct ieee80211_mgmt *mgmt, size_t len);
1015 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1016                                   struct sta_info *sta,
1017                                   struct ieee80211_mgmt *mgmt,
1018                                   size_t len);
1019 void ieee80211_process_addba_request(struct ieee80211_local *local,
1020                                      struct sta_info *sta,
1021                                      struct ieee80211_mgmt *mgmt,
1022                                      size_t len);
1023
1024 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1025                                    enum ieee80211_back_parties initiator);
1026
1027 /* Spectrum management */
1028 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1029                                        struct ieee80211_mgmt *mgmt,
1030                                        size_t len);
1031 void ieee80211_chswitch_timer(unsigned long data);
1032 void ieee80211_chswitch_work(struct work_struct *work);
1033 void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1034                                   struct ieee80211_channel_sw_ie *sw_elem,
1035                                   struct ieee80211_bss *bss);
1036 void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1037                                  u16 capab_info, u8 *pwr_constr_elem,
1038                                  u8 pwr_constr_elem_len);
1039
1040 /* Suspend/resume and hw reconfiguration */
1041 int ieee80211_reconfig(struct ieee80211_local *local);
1042
1043 #ifdef CONFIG_PM
1044 int __ieee80211_suspend(struct ieee80211_hw *hw);
1045
1046 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1047 {
1048         return ieee80211_reconfig(hw_to_local(hw));
1049 }
1050 #else
1051 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1052 {
1053         return 0;
1054 }
1055
1056 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1057 {
1058         return 0;
1059 }
1060 #endif
1061
1062 /* utility functions/constants */
1063 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1064 extern const unsigned char rfc1042_header[6];
1065 extern const unsigned char bridge_tunnel_header[6];
1066 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1067                         enum nl80211_iftype type);
1068 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1069                              int rate, int erp, int short_preamble);
1070 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1071                                      struct ieee80211_hdr *hdr, const u8 *tsc);
1072 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1073 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1074                       int encrypt);
1075 void ieee802_11_parse_elems(u8 *start, size_t len,
1076                             struct ieee802_11_elems *elems);
1077 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1078                                struct ieee802_11_elems *elems,
1079                                u64 filter, u32 crc);
1080 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
1081 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1082                               enum ieee80211_band band);
1083
1084 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1085 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1086 void ieee80211_dynamic_ps_timer(unsigned long data);
1087 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1088                              struct ieee80211_sub_if_data *sdata,
1089                              int powersave);
1090 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1091                              struct ieee80211_hdr *hdr);
1092 void ieee80211_beacon_loss_work(struct work_struct *work);
1093
1094 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1095                                      enum queue_stop_reason reason);
1096 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1097                                      enum queue_stop_reason reason);
1098 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1099                                     enum queue_stop_reason reason);
1100 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1101                                     enum queue_stop_reason reason);
1102
1103 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1104                          u16 transaction, u16 auth_alg,
1105                          u8 *extra, size_t extra_len,
1106                          const u8 *bssid, int encrypt);
1107 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1108                              const u8 *ie, size_t ie_len);
1109 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1110                               const u8 *ssid, size_t ssid_len,
1111                               const u8 *ie, size_t ie_len);
1112
1113 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1114                                   const size_t supp_rates_len,
1115                                   const u8 *supp_rates);
1116 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1117                             struct ieee802_11_elems *elems,
1118                             enum ieee80211_band band);
1119
1120 #ifdef CONFIG_MAC80211_NOINLINE
1121 #define debug_noinline noinline
1122 #else
1123 #define debug_noinline
1124 #endif
1125
1126 #endif /* IEEE80211_I_H */