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  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef IEEE80211_I_H
  12 #define IEEE80211_I_H
  13
  14 #include <linux/kernel.h>
  15 #include <linux/device.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/list.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/skbuff.h>
  21 #include <linux/workqueue.h>
  22 #include <linux/types.h>
  23 #include <linux/spinlock.h>
  24 #include <net/wireless.h>
  25 #include "ieee80211_key.h"
  26 #include "sta_info.h"
  27
  28 /* ieee80211.o internal definitions, etc. These are not included into
  29  * low-level drivers. */
  30
  31 #ifndef ETH_P_PAE
  32 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
  33 #endif /* ETH_P_PAE */
  34
  35 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
  36
  37 struct ieee80211_local;
  38
  39 #define BIT(x) (1 << (x))
  40
  41 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
  42
  43 /* Maximum number of broadcast/multicast frames to buffer when some of the
  44  * associated stations are using power saving. */
  45 #define AP_MAX_BC_BUFFER 128
  46
  47 /* Maximum number of frames buffered to all STAs, including multicast frames.
  48  * Note: increasing this limit increases the potential memory requirement. Each
  49  * frame can be up to about 2 kB long. */
  50 #define TOTAL_MAX_TX_BUFFER 512
  51
  52 /* Required encryption head and tailroom */
  53 #define IEEE80211_ENCRYPT_HEADROOM 8
  54 #define IEEE80211_ENCRYPT_TAILROOM 12
  55
  56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  57  * reception of at least three fragmented frames. This limit can be increased
  58  * by changing this define, at the cost of slower frame reassembly and
  59  * increased memory use (about 2 kB of RAM per entry). */
  60 #define IEEE80211_FRAGMENT_MAX 4
  61
  62 struct ieee80211_fragment_entry {
  63         unsigned long first_frag_time;
  64         unsigned int seq;
  65         unsigned int rx_queue;
  66         unsigned int last_frag;
  67         unsigned int extra_len;
  68         struct sk_buff_head skb_list;
  69         int ccmp; /* Whether fragments were encrypted with CCMP */
  70         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  71 };
  72
  73
  74 struct ieee80211_sta_bss {
  75         struct list_head list;
  76         struct ieee80211_sta_bss *hnext;
  77         atomic_t users;
  78
  79         u8 bssid[ETH_ALEN];
  80         u8 ssid[IEEE80211_MAX_SSID_LEN];
  81         size_t ssid_len;
  82         u16 capability; /* host byte order */
  83         int hw_mode;
  84         int channel;
  85         int freq;
  86         int rssi, signal, noise;
  87         u8 *wpa_ie;
  88         size_t wpa_ie_len;
  89         u8 *rsn_ie;
  90         size_t rsn_ie_len;
  91         u8 *wmm_ie;
  92         size_t wmm_ie_len;
  93 #define IEEE80211_MAX_SUPP_RATES 32
  94         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  95         size_t supp_rates_len;
  96         int beacon_int;
  97         u64 timestamp;
  98
  99         int probe_resp;
 100         unsigned long last_update;
 101
 102         /* during assocation, we save an ERP value from a probe response so
 103          * that we can feed ERP info to the driver when handling the
 104          * association completes. these fields probably won't be up-to-date
 105          * otherwise, you probably don't want to use them. */
 106         int has_erp_value;
 107         u8 erp_value;
 108 };
 109
 110
 111 typedef enum {
 112         TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
 113 } ieee80211_txrx_result;
 114
 115 struct ieee80211_txrx_data {
 116         struct sk_buff *skb;
 117         struct net_device *dev;
 118         struct ieee80211_local *local;
 119         struct ieee80211_sub_if_data *sdata;
 120         struct sta_info *sta;
 121         u16 fc, ethertype;
 122         struct ieee80211_key *key;
 123         unsigned int fragmented:1; /* whether the MSDU was fragmented */
 124         union {
 125                 struct {
 126                         struct ieee80211_tx_control *control;
 127                         unsigned int unicast:1;
 128                         unsigned int ps_buffered:1;
 129                         unsigned int short_preamble:1;
 130                         unsigned int probe_last_frag:1;
 131                         struct ieee80211_hw_mode *mode;
 132                         struct ieee80211_rate *rate;
 133                         /* use this rate (if set) for last fragment; rate can
 134                          * be set to lower rate for the first fragments, e.g.,
 135                          * when using CTS protection with IEEE 802.11g. */
 136                         struct ieee80211_rate *last_frag_rate;
 137                         int last_frag_hwrate;
 138                         int mgmt_interface;
 139
 140                         /* Extra fragments (in addition to the first fragment
 141                          * in skb) */
 142                         int num_extra_frag;
 143                         struct sk_buff **extra_frag;
 144                 } tx;
 145                 struct {
 146                         struct ieee80211_rx_status *status;
 147                         int sent_ps_buffered;
 148                         int queue;
 149                         int load;
 150                         unsigned int in_scan:1;
 151                         /* frame is destined to interface currently processed
 152                          * (including multicast frames) */
 153                         unsigned int ra_match:1;
 154                 } rx;
 155         } u;
 156 };
 157
 158 /* Stored in sk_buff->cb */
 159 struct ieee80211_tx_packet_data {
 160         int ifindex;
 161         unsigned long jiffies;
 162         unsigned int req_tx_status:1;
 163         unsigned int do_not_encrypt:1;
 164         unsigned int requeue:1;
 165         unsigned int mgmt_iface:1;
 166         unsigned int queue:4;
 167 };
 168
 169 struct ieee80211_tx_stored_packet {
 170         struct ieee80211_tx_control control;
 171         struct sk_buff *skb;
 172         int num_extra_frag;
 173         struct sk_buff **extra_frag;
 174         int last_frag_rateidx;
 175         int last_frag_hwrate;
 176         struct ieee80211_rate *last_frag_rate;
 177         unsigned int last_frag_rate_ctrl_probe:1;
 178 };
 179
 180 typedef ieee80211_txrx_result (*ieee80211_tx_handler)
 181 (struct ieee80211_txrx_data *tx);
 182
 183 typedef ieee80211_txrx_result (*ieee80211_rx_handler)
 184 (struct ieee80211_txrx_data *rx);
 185
 186 struct ieee80211_if_ap {
 187         u8 *beacon_head, *beacon_tail;
 188         int beacon_head_len, beacon_tail_len;
 189
 190         u8 ssid[IEEE80211_MAX_SSID_LEN];
 191         size_t ssid_len;
 192         u8 *generic_elem;
 193         size_t generic_elem_len;
 194
 195         /* yes, this looks ugly, but guarantees that we can later use
 196          * bitmap_empty :)
 197          * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
 198         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 199         atomic_t num_sta_ps; /* number of stations in PS mode */
 200         struct sk_buff_head ps_bc_buf;
 201         int dtim_period, dtim_count;
 202         int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
 203         int max_ratectrl_rateidx; /* max TX rateidx for rate control */
 204         int num_beacons; /* number of TXed beacon frames for this BSS */
 205 };
 206
 207 struct ieee80211_if_wds {
 208         u8 remote_addr[ETH_ALEN];
 209         struct sta_info *sta;
 210 };
 211
 212 struct ieee80211_if_vlan {
 213         u8 id;
 214 };
 215
 216 struct ieee80211_if_sta {
 217         enum {
 218                 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
 219                 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
 220                 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
 221         } state;
 222         struct timer_list timer;
 223         struct work_struct work;
 224         u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
 225         u8 ssid[IEEE80211_MAX_SSID_LEN];
 226         size_t ssid_len;
 227         u16 aid;
 228         u16 ap_capab, capab;
 229         u8 *extra_ie; /* to be added to the end of AssocReq */
 230         size_t extra_ie_len;
 231
 232         /* The last AssocReq/Resp IEs */
 233         u8 *assocreq_ies, *assocresp_ies;
 234         size_t assocreq_ies_len, assocresp_ies_len;
 235
 236         int auth_tries, assoc_tries;
 237
 238         unsigned int ssid_set:1;
 239         unsigned int bssid_set:1;
 240         unsigned int prev_bssid_set:1;
 241         unsigned int authenticated:1;
 242         unsigned int associated:1;
 243         unsigned int probereq_poll:1;
 244         unsigned int create_ibss:1;
 245         unsigned int mixed_cell:1;
 246         unsigned int wmm_enabled:1;
 247         unsigned int auto_ssid_sel:1;
 248         unsigned int auto_bssid_sel:1;
 249         unsigned int auto_channel_sel:1;
 250 #define IEEE80211_STA_REQ_SCAN 0
 251 #define IEEE80211_STA_REQ_AUTH 1
 252 #define IEEE80211_STA_REQ_RUN  2
 253         unsigned long request;
 254         struct sk_buff_head skb_queue;
 255
 256         int key_mgmt;
 257         unsigned long last_probe;
 258
 259 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
 260 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
 261 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
 262         unsigned int auth_algs; /* bitfield of allowed auth algs */
 263         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 264         int auth_transaction;
 265
 266         unsigned long ibss_join_req;
 267         struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
 268         u32 supp_rates_bits;
 269
 270         int wmm_last_param_set;
 271 };
 272
 273
 274 struct ieee80211_sub_if_data {
 275         struct list_head list;
 276         unsigned int type;
 277
 278         struct wireless_dev wdev;
 279
 280         struct net_device *dev;
 281         struct ieee80211_local *local;
 282
 283         int mc_count;
 284         unsigned int allmulti:1;
 285         unsigned int promisc:1;
 286         unsigned int use_protection:1; /* CTS protect ERP frames */
 287
 288         struct net_device_stats stats;
 289         int drop_unencrypted;
 290         int eapol; /* 0 = process EAPOL frames as normal data frames,
 291                     * 1 = send EAPOL frames through wlan#ap to hostapd
 292                     *     (default) */
 293         int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
 294                          * port */
 295
 296         u16 sequence;
 297
 298         /* Fragment table for host-based reassembly */
 299         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 300         unsigned int fragment_next;
 301
 302 #define NUM_DEFAULT_KEYS 4
 303         struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
 304         struct ieee80211_key *default_key;
 305
 306         struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
 307
 308         union {
 309                 struct ieee80211_if_ap ap;
 310                 struct ieee80211_if_wds wds;
 311                 struct ieee80211_if_vlan vlan;
 312                 struct ieee80211_if_sta sta;
 313         } u;
 314         int channel_use;
 315         int channel_use_raw;
 316
 317 #ifdef CONFIG_MAC80211_DEBUGFS
 318         struct dentry *debugfsdir;
 319         union {
 320                 struct {
 321                         struct dentry *channel_use;
 322                         struct dentry *drop_unencrypted;
 323                         struct dentry *eapol;
 324                         struct dentry *ieee8021_x;
 325                         struct dentry *state;
 326                         struct dentry *bssid;
 327                         struct dentry *prev_bssid;
 328                         struct dentry *ssid_len;
 329                         struct dentry *aid;
 330                         struct dentry *ap_capab;
 331                         struct dentry *capab;
 332                         struct dentry *extra_ie_len;
 333                         struct dentry *auth_tries;
 334                         struct dentry *assoc_tries;
 335                         struct dentry *auth_algs;
 336                         struct dentry *auth_alg;
 337                         struct dentry *auth_transaction;
 338                         struct dentry *flags;
 339                 } sta;
 340                 struct {
 341                         struct dentry *channel_use;
 342                         struct dentry *drop_unencrypted;
 343                         struct dentry *eapol;
 344                         struct dentry *ieee8021_x;
 345                         struct dentry *num_sta_ps;
 346                         struct dentry *dtim_period;
 347                         struct dentry *dtim_count;
 348                         struct dentry *num_beacons;
 349                         struct dentry *force_unicast_rateidx;
 350                         struct dentry *max_ratectrl_rateidx;
 351                         struct dentry *num_buffered_multicast;
 352                         struct dentry *beacon_head_len;
 353                         struct dentry *beacon_tail_len;
 354                 } ap;
 355                 struct {
 356                         struct dentry *channel_use;
 357                         struct dentry *drop_unencrypted;
 358                         struct dentry *eapol;
 359                         struct dentry *ieee8021_x;
 360                         struct dentry *peer;
 361                 } wds;
 362                 struct {
 363                         struct dentry *channel_use;
 364                         struct dentry *drop_unencrypted;
 365                         struct dentry *eapol;
 366                         struct dentry *ieee8021_x;
 367                         struct dentry *vlan_id;
 368                 } vlan;
 369                 struct {
 370                         struct dentry *mode;
 371                 } monitor;
 372                 struct dentry *default_key;
 373         } debugfs;
 374 #endif
 375 };
 376
 377 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
 378
 379 enum {
 380         IEEE80211_RX_MSG        = 1,
 381         IEEE80211_TX_STATUS_MSG = 2,
 382 };
 383
 384 struct ieee80211_local {
 385         /* embed the driver visible part.
 386          * don't cast (use the static inlines below), but we keep
 387          * it first anyway so they become a no-op */
 388         struct ieee80211_hw hw;
 389
 390         const struct ieee80211_ops *ops;
 391
 392         /* List of registered struct ieee80211_hw_mode */
 393         struct list_head modes_list;
 394
 395         struct net_device *mdev; /* wmaster# - "master" 802.11 device */
 396         struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
 397         int open_count;
 398         int monitors;
 399         struct iw_statistics wstats;
 400         u8 wstats_flags;
 401         int tx_headroom; /* required headroom for hardware/radiotap */
 402
 403         enum {
 404                 IEEE80211_DEV_UNINITIALIZED = 0,
 405                 IEEE80211_DEV_REGISTERED,
 406                 IEEE80211_DEV_UNREGISTERED,
 407         } reg_state;
 408
 409         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 410          * added to skb_queue will be processed, but frames in
 411          * skb_queue_unreliable may be dropped if the total length of these
 412          * queues increases over the limit. */
 413 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 414         struct tasklet_struct tasklet;
 415         struct sk_buff_head skb_queue;
 416         struct sk_buff_head skb_queue_unreliable;
 417
 418         /* Station data structures */
 419         spinlock_t sta_lock; /* mutex for STA data structures */
 420         int num_sta; /* number of stations in sta_list */
 421         struct list_head sta_list;
 422         struct list_head deleted_sta_list;
 423         struct sta_info *sta_hash[STA_HASH_SIZE];
 424         struct timer_list sta_cleanup;
 425
 426         unsigned long state[NUM_TX_DATA_QUEUES];
 427         struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
 428         struct tasklet_struct tx_pending_tasklet;
 429
 430         int mc_count;   /* total count of multicast entries in all interfaces */
 431         int iff_allmultis, iff_promiscs;
 432                         /* number of interfaces with corresponding IFF_ flags */
 433
 434         struct rate_control_ref *rate_ctrl;
 435
 436         int next_mode; /* MODE_IEEE80211*
 437                         * The mode preference for next channel change. This is
 438                         * used to select .11g vs. .11b channels (or 4.9 GHz vs.
 439                         * .11a) when the channel number is not unique. */
 440
 441         /* Supported and basic rate filters for different modes. These are
 442          * pointers to -1 terminated lists and rates in 100 kbps units. */
 443         int *supp_rates[NUM_IEEE80211_MODES];
 444         int *basic_rates[NUM_IEEE80211_MODES];
 445
 446         int rts_threshold;
 447         int fragmentation_threshold;
 448         int short_retry_limit; /* dot11ShortRetryLimit */
 449         int long_retry_limit; /* dot11LongRetryLimit */
 450         int short_preamble; /* use short preamble with IEEE 802.11b */
 451
 452         struct crypto_blkcipher *wep_tx_tfm;
 453         struct crypto_blkcipher *wep_rx_tfm;
 454         u32 wep_iv;
 455         int key_tx_rx_threshold; /* number of times any key can be used in TX
 456                                   * or RX before generating a rekey
 457                                   * notification; 0 = notification disabled. */
 458
 459         int bridge_packets; /* bridge packets between associated stations and
 460                              * deliver multicast frames both back to wireless
 461                              * media and to the local net stack */
 462
 463         ieee80211_rx_handler *rx_pre_handlers;
 464         ieee80211_rx_handler *rx_handlers;
 465         ieee80211_tx_handler *tx_handlers;
 466
 467         rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
 468                                * sta_bss_lock or sta_lock. */
 469         struct list_head sub_if_list;
 470         int sta_scanning;
 471         int scan_channel_idx;
 472         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 473         unsigned long last_scan_completed;
 474         struct delayed_work scan_work;
 475         struct net_device *scan_dev;
 476         struct ieee80211_channel *oper_channel, *scan_channel;
 477         struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
 478         u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
 479         size_t scan_ssid_len;
 480         struct list_head sta_bss_list;
 481         struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
 482         spinlock_t sta_bss_lock;
 483 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
 484 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
 485 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
 486         int scan_flags;
 487
 488         /* SNMP counters */
 489         /* dot11CountersTable */
 490         u32 dot11TransmittedFragmentCount;
 491         u32 dot11MulticastTransmittedFrameCount;
 492         u32 dot11FailedCount;
 493         u32 dot11RetryCount;
 494         u32 dot11MultipleRetryCount;
 495         u32 dot11FrameDuplicateCount;
 496         u32 dot11ReceivedFragmentCount;
 497         u32 dot11MulticastReceivedFrameCount;
 498         u32 dot11TransmittedFrameCount;
 499         u32 dot11WEPUndecryptableCount;
 500
 501 #ifdef CONFIG_MAC80211_LEDS
 502         int tx_led_counter, rx_led_counter;
 503         struct led_trigger *tx_led, *rx_led;
 504         char tx_led_name[32], rx_led_name[32];
 505 #endif
 506
 507         u32 channel_use;
 508         u32 channel_use_raw;
 509         u32 stat_time;
 510         struct timer_list stat_timer;
 511
 512 #ifdef CONFIG_MAC80211_DEBUGFS
 513         struct work_struct sta_debugfs_add;
 514 #endif
 515
 516         enum {
 517                 STA_ANTENNA_SEL_AUTO = 0,
 518                 STA_ANTENNA_SEL_SW_CTRL = 1,
 519                 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
 520         } sta_antenna_sel;
 521
 522 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 523         /* TX/RX handler statistics */
 524         unsigned int tx_handlers_drop;
 525         unsigned int tx_handlers_queued;
 526         unsigned int tx_handlers_drop_unencrypted;
 527         unsigned int tx_handlers_drop_fragment;
 528         unsigned int tx_handlers_drop_wep;
 529         unsigned int tx_handlers_drop_not_assoc;
 530         unsigned int tx_handlers_drop_unauth_port;
 531         unsigned int rx_handlers_drop;
 532         unsigned int rx_handlers_queued;
 533         unsigned int rx_handlers_drop_nullfunc;
 534         unsigned int rx_handlers_drop_defrag;
 535         unsigned int rx_handlers_drop_short;
 536         unsigned int rx_handlers_drop_passive_scan;
 537         unsigned int tx_expand_skb_head;
 538         unsigned int tx_expand_skb_head_cloned;
 539         unsigned int rx_expand_skb_head;
 540         unsigned int rx_expand_skb_head2;
 541         unsigned int rx_handlers_fragments;
 542         unsigned int tx_status_drop;
 543         unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
 544         unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
 545 #define I802_DEBUG_INC(c) (c)++
 546 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 547 #define I802_DEBUG_INC(c) do { } while (0)
 548 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 549
 550
 551         int default_wep_only; /* only default WEP keys are used with this
 552                                * interface; this is used to decide when hwaccel
 553                                * can be used with default keys */
 554         int total_ps_buffered; /* total number of all buffered unicast and
 555                                 * multicast packets for power saving stations
 556                                 */
 557         int allow_broadcast_always; /* whether to allow TX of broadcast frames
 558                                      * even when there are no associated STAs
 559                                      */
 560
 561         int wifi_wme_noack_test;
 562         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 563
 564         unsigned int enabled_modes; /* bitfield of allowed modes;
 565                                       * (1 << MODE_*) */
 566         unsigned int hw_modes; /* bitfield of supported hardware modes;
 567                                 * (1 << MODE_*) */
 568
 569         int user_space_mlme;
 570
 571 #ifdef CONFIG_MAC80211_DEBUGFS
 572         struct local_debugfsdentries {
 573                 struct dentry *channel;
 574                 struct dentry *frequency;
 575                 struct dentry *radar_detect;
 576                 struct dentry *antenna_sel_tx;
 577                 struct dentry *antenna_sel_rx;
 578                 struct dentry *bridge_packets;
 579                 struct dentry *key_tx_rx_threshold;
 580                 struct dentry *rts_threshold;
 581                 struct dentry *fragmentation_threshold;
 582                 struct dentry *short_retry_limit;
 583                 struct dentry *long_retry_limit;
 584                 struct dentry *total_ps_buffered;
 585                 struct dentry *mode;
 586                 struct dentry *wep_iv;
 587                 struct dentry *tx_power_reduction;
 588                 struct dentry *modes;
 589                 struct dentry *statistics;
 590                 struct local_debugfsdentries_statsdentries {
 591                         struct dentry *transmitted_fragment_count;
 592                         struct dentry *multicast_transmitted_frame_count;
 593                         struct dentry *failed_count;
 594                         struct dentry *retry_count;
 595                         struct dentry *multiple_retry_count;
 596                         struct dentry *frame_duplicate_count;
 597                         struct dentry *received_fragment_count;
 598                         struct dentry *multicast_received_frame_count;
 599                         struct dentry *transmitted_frame_count;
 600                         struct dentry *wep_undecryptable_count;
 601                         struct dentry *num_scans;
 602 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 603                         struct dentry *tx_handlers_drop;
 604                         struct dentry *tx_handlers_queued;
 605                         struct dentry *tx_handlers_drop_unencrypted;
 606                         struct dentry *tx_handlers_drop_fragment;
 607                         struct dentry *tx_handlers_drop_wep;
 608                         struct dentry *tx_handlers_drop_not_assoc;
 609                         struct dentry *tx_handlers_drop_unauth_port;
 610                         struct dentry *rx_handlers_drop;
 611                         struct dentry *rx_handlers_queued;
 612                         struct dentry *rx_handlers_drop_nullfunc;
 613                         struct dentry *rx_handlers_drop_defrag;
 614                         struct dentry *rx_handlers_drop_short;
 615                         struct dentry *rx_handlers_drop_passive_scan;
 616                         struct dentry *tx_expand_skb_head;
 617                         struct dentry *tx_expand_skb_head_cloned;
 618                         struct dentry *rx_expand_skb_head;
 619                         struct dentry *rx_expand_skb_head2;
 620                         struct dentry *rx_handlers_fragments;
 621                         struct dentry *tx_status_drop;
 622                         struct dentry *wme_tx_queue;
 623                         struct dentry *wme_rx_queue;
 624 #endif
 625                         struct dentry *dot11ACKFailureCount;
 626                         struct dentry *dot11RTSFailureCount;
 627                         struct dentry *dot11FCSErrorCount;
 628                         struct dentry *dot11RTSSuccessCount;
 629                 } stats;
 630                 struct dentry *stations;
 631                 struct dentry *keys;
 632         } debugfs;
 633 #endif
 634 };
 635
 636 static inline struct ieee80211_local *hw_to_local(
 637         struct ieee80211_hw *hw)
 638 {
 639         return container_of(hw, struct ieee80211_local, hw);
 640 }
 641
 642 static inline struct ieee80211_hw *local_to_hw(
 643         struct ieee80211_local *local)
 644 {
 645         return &local->hw;
 646 }
 647
 648 enum ieee80211_link_state_t {
 649         IEEE80211_LINK_STATE_XOFF = 0,
 650         IEEE80211_LINK_STATE_PENDING,
 651 };
 652
 653 struct sta_attribute {
 654         struct attribute attr;
 655         ssize_t (*show)(const struct sta_info *, char *buf);
 656         ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
 657 };
 658
 659 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
 660 {
 661         /*
 662          * This format has ben mandated by the IEEE specifications,
 663          * so this line may not be changed to use the __set_bit() format.
 664          */
 665         bss->tim[(aid)/8] |= 1<<((aid) % 8);
 666 }
 667
 668 static inline void bss_tim_set(struct ieee80211_local *local,
 669                                struct ieee80211_if_ap *bss, int aid)
 670 {
 671         spin_lock_bh(&local->sta_lock);
 672         __bss_tim_set(bss, aid);
 673         spin_unlock_bh(&local->sta_lock);
 674 }
 675
 676 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
 677 {
 678         /*
 679          * This format has ben mandated by the IEEE specifications,
 680          * so this line may not be changed to use the __clear_bit() format.
 681          */
 682         bss->tim[(aid)/8] &= !(1<<((aid) % 8));
 683 }
 684
 685 static inline void bss_tim_clear(struct ieee80211_local *local,
 686                                  struct ieee80211_if_ap *bss, int aid)
 687 {
 688         spin_lock_bh(&local->sta_lock);
 689         __bss_tim_clear(bss, aid);
 690         spin_unlock_bh(&local->sta_lock);
 691 }
 692
 693 /**
 694  * ieee80211_is_erp_rate - Check if a rate is an ERP rate
 695  * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
 696  * @rate: Transmission rate to check, in 100 kbps
 697  *
 698  * Check if a given rate is an Extended Rate PHY (ERP) rate.
 699  */
 700 static inline int ieee80211_is_erp_rate(int phymode, int rate)
 701 {
 702         if (phymode == MODE_IEEE80211G) {
 703                 if (rate != 10 && rate != 20 &&
 704                     rate != 55 && rate != 110)
 705                         return 1;
 706         }
 707         return 0;
 708 }
 709
 710 /* ieee80211.c */
 711 int ieee80211_hw_config(struct ieee80211_local *local);
 712 int ieee80211_if_config(struct net_device *dev);
 713 int ieee80211_if_config_beacon(struct net_device *dev);
 714 struct ieee80211_key_conf *
 715 ieee80211_key_data2conf(struct ieee80211_local *local,
 716                         const struct ieee80211_key *data);
 717 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
 718                                           int idx, size_t key_len, gfp_t flags);
 719 void ieee80211_key_free(struct ieee80211_key *key);
 720 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
 721                        struct ieee80211_rx_status *status, u32 msg_type);
 722 void ieee80211_prepare_rates(struct ieee80211_local *local,
 723                              struct ieee80211_hw_mode *mode);
 724 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
 725 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
 726 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 727 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 728 void ieee80211_if_setup(struct net_device *dev);
 729 void ieee80211_if_mgmt_setup(struct net_device *dev);
 730 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
 731                                  const char *name);
 732 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
 733
 734 /* ieee80211_ioctl.c */
 735 extern const struct iw_handler_def ieee80211_iw_handler_def;
 736
 737 void ieee80211_update_default_wep_only(struct ieee80211_local *local);
 738
 739
 740 /* Least common multiple of the used rates (in 100 kbps). This is used to
 741  * calculate rate_inv values for each rate so that only integers are needed. */
 742 #define CHAN_UTIL_RATE_LCM 95040
 743 /* 1 usec is 1/8 * (95040/10) = 1188 */
 744 #define CHAN_UTIL_PER_USEC 1188
 745 /* Amount of bits to shift the result right to scale the total utilization
 746  * to values that will not wrap around 32-bit integers. */
 747 #define CHAN_UTIL_SHIFT 9
 748 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
 749  * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
 750  * raw value with about 23 should give utilization in 10th of a percentage
 751  * (1/1000). However, utilization is only estimated and not all intervals
 752  * between frames etc. are calculated. 18 seems to give numbers that are closer
 753  * to the real maximum. */
 754 #define CHAN_UTIL_PER_10MS 18
 755 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
 756 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
 757
 758
 759 /* ieee80211_ioctl.c */
 760 int ieee80211_set_compression(struct ieee80211_local *local,
 761                               struct net_device *dev, struct sta_info *sta);
 762 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
 763 /* ieee80211_sta.c */
 764 void ieee80211_sta_timer(unsigned long data);
 765 void ieee80211_sta_work(struct work_struct *work);
 766 void ieee80211_sta_scan_work(struct work_struct *work);
 767 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
 768                            struct ieee80211_rx_status *rx_status);
 769 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
 770 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
 771 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
 772 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
 773 void ieee80211_sta_req_auth(struct net_device *dev,
 774                             struct ieee80211_if_sta *ifsta);
 775 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
 776 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
 777                            struct ieee80211_rx_status *rx_status);
 778 void ieee80211_rx_bss_list_init(struct net_device *dev);
 779 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
 780 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
 781 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
 782                                          struct sk_buff *skb, u8 *bssid,
 783                                          u8 *addr);
 784 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
 785 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
 786
 787 /* ieee80211_iface.c */
 788 int ieee80211_if_add(struct net_device *dev, const char *name,
 789                      struct net_device **new_dev, int type);
 790 void ieee80211_if_set_type(struct net_device *dev, int type);
 791 void ieee80211_if_reinit(struct net_device *dev);
 792 void __ieee80211_if_del(struct ieee80211_local *local,
 793                         struct ieee80211_sub_if_data *sdata);
 794 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
 795 void ieee80211_if_free(struct net_device *dev);
 796 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
 797 int ieee80211_if_add_mgmt(struct ieee80211_local *local);
 798 void ieee80211_if_del_mgmt(struct ieee80211_local *local);
 799
 800 /* regdomain.c */
 801 void ieee80211_regdomain_init(void);
 802 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode);
 803
 804 /* for wiphy privid */
 805 extern void *mac80211_wiphy_privid;
 806
 807 #endif /* IEEE80211_I_H */