package/d80211/src/ieee80211_i.h

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005, Devicescape Software, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #ifndef IEEE80211_I_H
  11 #define IEEE80211_I_H
  12
  13 #include <linux/kernel.h>
  14 #include <linux/device.h>
  15 #include <linux/if_ether.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/list.h>
  18 #include <linux/netdevice.h>
  19 #include <linux/skbuff.h>
  20 #include <linux/workqueue.h>
  21 #include <linux/types.h>
  22 #include <linux/spinlock.h>
  23 #include "ieee80211_key.h"
  24 #include "sta_info.h"
  25
  26 /* ieee80211.o internal definitions, etc. These are not included into
  27  * low-level drivers. */
  28
  29 #ifndef ETH_P_PAE
  30 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
  31 #endif /* ETH_P_PAE */
  32
  33 #define IEEE80211_MAX_SSID_LEN 32
  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
  53 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  54  * reception of at least three fragmented frames. This limit can be increased
  55  * by changing this define, at the cost of slower frame reassembly and
  56  * increased memory use (about 2 kB of RAM per entry). */
  57 #define IEEE80211_FRAGMENT_MAX 4
  58
  59 struct ieee80211_fragment_entry {
  60         unsigned long first_frag_time;
  61         unsigned int seq;
  62         unsigned int rx_queue;
  63         unsigned int last_frag;
  64         unsigned int extra_len;
  65         struct sk_buff_head skb_list;
  66         int ccmp; /* Whether fragments were encrypted with CCMP */
  67         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  68 };
  69
  70
  71 struct ieee80211_sta_bss {
  72         struct list_head list;
  73         struct ieee80211_sta_bss *hnext;
  74         atomic_t users;
  75
  76         u8 bssid[ETH_ALEN];
  77         u8 ssid[IEEE80211_MAX_SSID_LEN];
  78         size_t ssid_len;
  79         u16 capability; /* host byte order */
  80         int hw_mode;
  81         int channel;
  82         int freq;
  83         int rssi;
  84         u8 *wpa_ie;
  85         size_t wpa_ie_len;
  86         u8 *rsn_ie;
  87         size_t rsn_ie_len;
  88         u8 *wmm_ie;
  89         size_t wmm_ie_len;
  90 #define IEEE80211_MAX_SUPP_RATES 32
  91         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  92         size_t supp_rates_len;
  93         int beacon_int;
  94         u64 timestamp;
  95
  96         int probe_resp;
  97         unsigned long last_update;
  98
  99 };
 100
 101
 102 typedef enum {
 103         TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
 104 } ieee80211_txrx_result;
 105
 106 struct ieee80211_txrx_data {
 107         struct sk_buff *skb;
 108         struct net_device *dev;
 109         struct ieee80211_local *local;
 110         struct ieee80211_sub_if_data *sdata;
 111         struct sta_info *sta;
 112         u16 fc, ethertype;
 113         struct ieee80211_key *key;
 114         unsigned int fragmented:1; /* whether the MSDU was fragmented */
 115         union {
 116                 struct {
 117                         struct ieee80211_tx_control *control;
 118                         unsigned int unicast:1;
 119                         unsigned int ps_buffered:1;
 120                         unsigned int short_preamble:1;
 121                         unsigned int probe_last_frag:1;
 122                         struct ieee80211_rate *rate;
 123                         /* use this rate (if set) for last fragment; rate can
 124                          * be set to lower rate for the first fragments, e.g.,
 125                          * when using CTS protection with IEEE 802.11g. */
 126                         struct ieee80211_rate *last_frag_rate;
 127                         int last_frag_rateidx;
 128                         int last_frag_hwrate;
 129                         int mgmt_interface;
 130
 131                         /* Extra fragments (in addition to the first fragment
 132                          * in skb) */
 133                         int num_extra_frag;
 134                         struct sk_buff **extra_frag;
 135                 } tx;
 136                 struct {
 137                         struct ieee80211_rx_status *status;
 138                         int sent_ps_buffered;
 139                         int queue;
 140                         int load;
 141                         unsigned int in_scan:1;
 142                         /* frame is destined to interface currently processed
 143                          * (including multicast frames) */
 144                         unsigned int ra_match:1;
 145                 } rx;
 146         } u;
 147 #ifdef CONFIG_HOSTAPD_WPA_TESTING
 148         int wpa_test;
 149 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
 150 };
 151
 152 /* Stored in sk_buff->cb */
 153 struct ieee80211_tx_packet_data {
 154         int ifindex;
 155         unsigned long jiffies;
 156         unsigned int req_tx_status:1;
 157         unsigned int do_not_encrypt:1;
 158         unsigned int requeue:1;
 159         unsigned int mgmt_iface:1;
 160         unsigned int queue:4;
 161 };
 162
 163 struct ieee80211_tx_stored_packet {
 164         struct ieee80211_tx_control control;
 165         struct sk_buff *skb;
 166         int num_extra_frag;
 167         struct sk_buff **extra_frag;
 168         int last_frag_rateidx;
 169         int last_frag_hwrate;
 170         unsigned int last_frag_rate_ctrl_probe:1;
 171 };
 172
 173 struct ieee80211_passive_scan {
 174         unsigned int in_scan:1; /* this must be cleared before calling
 175                                  * netif_oper(WAKEUP) */
 176         unsigned int our_mode_only:1; /* only scan our physical mode a/b/g/etc
 177                                        */
 178         int interval; /* time in seconds between scans */
 179         int time; /* time in microseconds to scan for */
 180         int channel; /* channel to be scanned */
 181         int tries;
 182
 183         struct ieee80211_hw_mode *mode;
 184         int chan_idx;
 185
 186         int freq;
 187         int rx_packets;
 188         int rx_beacon;
 189         int txrx_count;
 190
 191         struct timer_list timer;
 192
 193         struct sk_buff *skb; /* skb to transmit before changing channels,
 194                               * maybe null for none */
 195         struct ieee80211_tx_control tx_control;
 196
 197         unsigned int num_scans;
 198 };
 199
 200 typedef ieee80211_txrx_result (*ieee80211_tx_handler)
 201 (struct ieee80211_txrx_data *tx);
 202
 203 typedef ieee80211_txrx_result (*ieee80211_rx_handler)
 204 (struct ieee80211_txrx_data *rx);
 205
 206 struct ieee80211_if_ap {
 207         u8 *beacon_head, *beacon_tail;
 208         int beacon_head_len, beacon_tail_len;
 209
 210         u8 ssid[IEEE80211_MAX_SSID_LEN];
 211         size_t ssid_len;
 212         u8 *generic_elem;
 213         size_t generic_elem_len;
 214
 215         /* yes, this looks ugly, but guarantees that we can later use
 216          * bitmap_empty :)
 217          * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
 218         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 219         atomic_t num_sta_ps; /* number of stations in PS mode */
 220         struct sk_buff_head ps_bc_buf;
 221         int dtim_period, dtim_count;
 222         int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
 223         int max_ratectrl_rateidx; /* max TX rateidx for rate control */
 224         int num_beacons; /* number of TXed beacon frames for this BSS */
 225 };
 226
 227 struct ieee80211_if_wds {
 228         u8 remote_addr[ETH_ALEN];
 229         struct sta_info *sta;
 230 };
 231
 232 struct ieee80211_if_vlan {
 233         u8 id;
 234 };
 235
 236 struct ieee80211_if_sta {
 237         enum {
 238                 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
 239                 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
 240                 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
 241         } state;
 242         struct delayed_work work;
 243         u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
 244         u8 ssid[IEEE80211_MAX_SSID_LEN];
 245         size_t ssid_len;
 246         u16 aid;
 247         u16 ap_capab, capab;
 248         u8 *extra_ie; /* to be added to the end of AssocReq */
 249         size_t extra_ie_len;
 250
 251         /* The last AssocReq/Resp IEs */
 252         u8 *assocreq_ies, *assocresp_ies;
 253         size_t assocreq_ies_len, assocresp_ies_len;
 254
 255         int auth_tries, assoc_tries;
 256
 257         unsigned int ssid_set:1;
 258         unsigned int bssid_set:1;
 259         unsigned int prev_bssid_set:1;
 260         unsigned int authenticated:1;
 261         unsigned int associated:1;
 262         unsigned int probereq_poll:1;
 263         unsigned int use_protection:1;
 264         unsigned int create_ibss:1;
 265         unsigned int mixed_cell:1;
 266         unsigned int wmm_enabled:1;
 267
 268         int key_mgmt;
 269         unsigned long last_probe;
 270
 271 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
 272 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
 273 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
 274         unsigned int auth_algs; /* bitfield of allowed auth algs */
 275         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 276         int auth_transaction;
 277
 278         unsigned long ibss_join_req;
 279         struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
 280         u32 supp_rates_bits;
 281
 282         int wmm_last_param_set;
 283 };
 284
 285
 286 struct ieee80211_sub_if_data {
 287         struct list_head list;
 288         unsigned int type;
 289
 290         struct net_device *dev;
 291         struct ieee80211_local *local;
 292
 293         int mc_count;
 294         unsigned int allmulti:1;
 295         unsigned int promisc:1;
 296
 297         struct net_device_stats stats;
 298         int drop_unencrypted;
 299         int eapol; /* 0 = process EAPOL frames as normal data frames,
 300                     * 1 = send EAPOL frames through wlan#ap to hostapd
 301                     *     (default) */
 302         int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
 303                          * port */
 304
 305         /* Fragment table for host-based reassembly */
 306         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 307         unsigned int fragment_next;
 308
 309 #define NUM_DEFAULT_KEYS 4
 310         struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
 311         struct ieee80211_key *default_key;
 312         struct kset key_kset;
 313
 314         struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
 315
 316         union {
 317                 struct ieee80211_if_ap ap;
 318                 struct ieee80211_if_wds wds;
 319                 struct ieee80211_if_vlan vlan;
 320                 struct ieee80211_if_sta sta;
 321         } u;
 322         int channel_use;
 323         int channel_use_raw;
 324
 325         struct attribute_group *sysfs_group;
 326 };
 327
 328 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
 329
 330 struct ieee80211_local {
 331         /* embed the driver visible part.
 332          * don't cast (use the static inlines below), but we keep
 333          * it first anyway so they become a no-op */
 334         struct ieee80211_hw hw;
 335
 336         const struct ieee80211_ops *ops;
 337
 338         /* List of registered struct ieee80211_hw_mode */
 339         struct list_head modes_list;
 340
 341         struct net_device *mdev; /* wmaster# - "master" 802.11 device */
 342         struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
 343         int open_count;
 344         int monitors;
 345         struct iw_statistics wstats;
 346
 347         struct class_device class_dev;
 348
 349         enum {
 350                 IEEE80211_DEV_UNITIALIZED = 0,
 351                 IEEE80211_DEV_REGISTERED,
 352                 IEEE80211_DEV_UNREGISTERED,
 353         } reg_state;
 354
 355         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 356          * added to skb_queue will be processed, but frames in
 357          * skb_queue_unreliable may be dropped if the total length of these
 358          * queues increases over the limit. */
 359 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 360         struct tasklet_struct tasklet;
 361         struct sk_buff_head skb_queue;
 362         struct sk_buff_head skb_queue_unreliable;
 363         enum {
 364                 ieee80211_rx_msg = 1,
 365                 ieee80211_tx_status_msg = 2
 366         } ieee80211_msg_enum;
 367
 368         spinlock_t generic_lock;
 369         /* Station data structures */
 370         struct kset sta_kset;
 371         spinlock_t sta_lock; /* mutex for STA data structures */
 372         int num_sta; /* number of stations in sta_list */
 373         struct list_head sta_list;
 374         struct list_head deleted_sta_list;
 375         struct sta_info *sta_hash[STA_HASH_SIZE];
 376         struct timer_list sta_cleanup;
 377
 378         unsigned long state[NUM_TX_DATA_QUEUES];
 379         struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
 380         struct tasklet_struct tx_pending_tasklet;
 381
 382         int mc_count;   /* total count of multicast entries in all interfaces */
 383         int iff_allmultis, iff_promiscs;
 384                         /* number of interfaces with corresponding IFF_ flags */
 385
 386         /* Current rate table. This is a pointer to hw->modes structure. */
 387         struct ieee80211_rate *curr_rates;
 388         int num_curr_rates;
 389
 390         struct rate_control_ref *rate_ctrl;
 391
 392         int next_mode; /* MODE_IEEE80211*
 393                         * The mode preference for next channel change. This is
 394                         * used to select .11g vs. .11b channels (or 4.9 GHz vs.
 395                         * .11a) when the channel number is not unique. */
 396
 397         /* Supported and basic rate filters for different modes. These are
 398          * pointers to -1 terminated lists and rates in 100 kbps units. */
 399         int *supp_rates[NUM_IEEE80211_MODES];
 400         int *basic_rates[NUM_IEEE80211_MODES];
 401
 402         int rts_threshold;
 403         int cts_protect_erp_frames;
 404         int fragmentation_threshold;
 405         int short_retry_limit; /* dot11ShortRetryLimit */
 406         int long_retry_limit; /* dot11LongRetryLimit */
 407         int short_preamble; /* use short preamble with IEEE 802.11b */
 408
 409         struct crypto_blkcipher *wep_tx_tfm;
 410         struct crypto_blkcipher *wep_rx_tfm;
 411         u32 wep_iv;
 412         int key_tx_rx_threshold; /* number of times any key can be used in TX
 413                                   * or RX before generating a rekey
 414                                   * notification; 0 = notification disabled. */
 415
 416         int bridge_packets; /* bridge packets between associated stations and
 417                              * deliver multicast frames both back to wireless
 418                              * media and to the local net stack */
 419
 420         struct ieee80211_passive_scan scan;
 421
 422
 423         ieee80211_rx_handler *rx_pre_handlers;
 424         ieee80211_rx_handler *rx_handlers;
 425         ieee80211_tx_handler *tx_handlers;
 426
 427         spinlock_t sub_if_lock; /* mutex for STA data structures */
 428         struct list_head sub_if_list;
 429         int sta_scanning;
 430         struct ieee80211_hw_mode *scan_hw_mode;
 431         int scan_channel_idx;
 432         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 433         unsigned long last_scan_completed;
 434         struct delayed_work scan_work;
 435         struct net_device *scan_dev;
 436         int scan_oper_channel;
 437         int scan_oper_channel_val;
 438         int scan_oper_power_level;
 439         int scan_oper_freq;
 440         int scan_oper_phymode;
 441         int scan_oper_antenna_max;
 442         u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
 443         size_t scan_ssid_len;
 444         struct list_head sta_bss_list;
 445         struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
 446         spinlock_t sta_bss_lock;
 447 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
 448 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
 449 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
 450         int scan_flags;
 451
 452 #ifdef CONFIG_HOSTAPD_WPA_TESTING
 453         u32 wpa_trigger;
 454 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
 455         /* SNMP counters */
 456         /* dot11CountersTable */
 457         u32 dot11TransmittedFragmentCount;
 458         u32 dot11MulticastTransmittedFrameCount;
 459         u32 dot11FailedCount;
 460         u32 dot11RetryCount;
 461         u32 dot11MultipleRetryCount;
 462         u32 dot11FrameDuplicateCount;
 463         u32 dot11ReceivedFragmentCount;
 464         u32 dot11MulticastReceivedFrameCount;
 465         u32 dot11TransmittedFrameCount;
 466         u32 dot11WEPUndecryptableCount;
 467
 468 #ifdef CONFIG_D80211_LEDS
 469         int tx_led_counter, rx_led_counter;
 470         struct led_trigger *tx_led, *rx_led;
 471         char tx_led_name[32], rx_led_name[32];
 472 #endif
 473
 474         u32 channel_use;
 475         u32 channel_use_raw;
 476         u32 stat_time;
 477         struct timer_list stat_timer;
 478
 479         struct proc_dir_entry *proc, *proc_sta, *proc_iface;
 480
 481         struct work_struct sta_proc_add;
 482
 483         enum {
 484                 STA_ANTENNA_SEL_AUTO = 0,
 485                 STA_ANTENNA_SEL_SW_CTRL = 1,
 486                 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
 487         } sta_antenna_sel;
 488
 489         int rate_ctrl_num_up, rate_ctrl_num_down;
 490
 491 #ifdef CONFIG_D80211_DEBUG_COUNTERS
 492         /* TX/RX handler statistics */
 493         unsigned int tx_handlers_drop;
 494         unsigned int tx_handlers_queued;
 495         unsigned int tx_handlers_drop_unencrypted;
 496         unsigned int tx_handlers_drop_fragment;
 497         unsigned int tx_handlers_drop_wep;
 498         unsigned int tx_handlers_drop_not_assoc;
 499         unsigned int tx_handlers_drop_unauth_port;
 500         unsigned int rx_handlers_drop;
 501         unsigned int rx_handlers_queued;
 502         unsigned int rx_handlers_drop_nullfunc;
 503         unsigned int rx_handlers_drop_defrag;
 504         unsigned int rx_handlers_drop_short;
 505         unsigned int rx_handlers_drop_passive_scan;
 506         unsigned int tx_expand_skb_head;
 507         unsigned int tx_expand_skb_head_cloned;
 508         unsigned int rx_expand_skb_head;
 509         unsigned int rx_expand_skb_head2;
 510         unsigned int rx_handlers_fragments;
 511         unsigned int tx_status_drop;
 512         unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
 513         unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
 514 #define I802_DEBUG_INC(c) (c)++
 515 #else /* CONFIG_D80211_DEBUG_COUNTERS */
 516 #define I802_DEBUG_INC(c) do { } while (0)
 517 #endif /* CONFIG_D80211_DEBUG_COUNTERS */
 518
 519
 520         int default_wep_only; /* only default WEP keys are used with this
 521                                * interface; this is used to decide when hwaccel
 522                                * can be used with default keys */
 523         int total_ps_buffered; /* total number of all buffered unicast and
 524                                 * multicast packets for power saving stations
 525                                 */
 526         int allow_broadcast_always; /* whether to allow TX of broadcast frames
 527                                      * even when there are no associated STAs
 528                                      */
 529
 530         int wifi_wme_noack_test;
 531         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 532
 533         unsigned int enabled_modes; /* bitfield of allowed modes;
 534                                       * (1 << MODE_*) */
 535         unsigned int hw_modes; /* bitfield of supported hardware modes;
 536                                 * (1 << MODE_*) */
 537
 538         int user_space_mlme;
 539 };
 540
 541 static inline struct ieee80211_local *hw_to_local(
 542         struct ieee80211_hw *hw)
 543 {
 544         return container_of(hw, struct ieee80211_local, hw);
 545 }
 546
 547 static inline struct ieee80211_hw *local_to_hw(
 548         struct ieee80211_local *local)
 549 {
 550         return &local->hw;
 551 }
 552
 553 enum ieee80211_link_state_t {
 554         IEEE80211_LINK_STATE_XOFF = 0,
 555         IEEE80211_LINK_STATE_PENDING,
 556 };
 557
 558 struct sta_attribute {
 559         struct attribute attr;
 560         ssize_t (*show)(const struct sta_info *, char *buf);
 561         ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
 562 };
 563
 564 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
 565 {
 566         /*
 567          * This format has ben mandated by the IEEE specifications,
 568          * so this line may not be changed to use the __set_bit() format.
 569          */
 570         bss->tim[(aid)/8] |= 1<<((aid) % 8);
 571 }
 572
 573 static inline void bss_tim_set(struct ieee80211_local *local,
 574                                struct ieee80211_if_ap *bss, int aid)
 575 {
 576         spin_lock_bh(&local->sta_lock);
 577         __bss_tim_set(bss, aid);
 578         spin_unlock_bh(&local->sta_lock);
 579 }
 580
 581 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
 582 {
 583         /*
 584          * This format has ben mandated by the IEEE specifications,
 585          * so this line may not be changed to use the __clear_bit() format.
 586          */
 587         bss->tim[(aid)/8] &= !(1<<((aid) % 8));
 588 }
 589
 590 static inline void bss_tim_clear(struct ieee80211_local *local,
 591                                  struct ieee80211_if_ap *bss, int aid)
 592 {
 593         spin_lock_bh(&local->sta_lock);
 594         __bss_tim_clear(bss, aid);
 595         spin_unlock_bh(&local->sta_lock);
 596 }
 597
 598 /* ieee80211.c */
 599 void ieee80211_release_hw(struct ieee80211_local *local);
 600 int ieee80211_hw_config(struct ieee80211_local *local);
 601 int ieee80211_if_config(struct net_device *dev);
 602 int ieee80211_if_config_beacon(struct net_device *dev);
 603 struct ieee80211_key_conf *
 604 ieee80211_key_data2conf(struct ieee80211_local *local,
 605                         struct ieee80211_key *data);
 606 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
 607                                           int idx, size_t key_len, gfp_t flags);
 608 void ieee80211_key_free(struct ieee80211_key *key);
 609 void ieee80211_key_release(struct kobject *kobj);
 610 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
 611                        struct ieee80211_rx_status *status, u32 msg_type);
 612 void ieee80211_prepare_rates(struct ieee80211_local *local);
 613 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
 614 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
 615 void ieee80211_if_setup(struct net_device *dev);
 616 void ieee80211_if_mgmt_setup(struct net_device *dev);
 617 void ieee80211_if_shutdown(struct net_device *dev);
 618 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
 619                                  const char *name);
 620 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
 621
 622 /* ieee80211_ioctl.c */
 623 int ieee80211_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 624 extern const struct iw_handler_def ieee80211_iw_handler_def;
 625 extern const struct iw_handler_def ieee80211_iw_master_handler_def;
 626
 627 /* Set hw encryption from ieee80211 */
 628 int ieee80211_set_hw_encryption(struct net_device *dev,
 629                                 struct sta_info *sta, u8 addr[ETH_ALEN],
 630                                 struct ieee80211_key *key);
 631 void ieee80211_update_default_wep_only(struct ieee80211_local *local);
 632
 633 /* ieee80211_scan.c */
 634 void ieee80211_init_scan(struct ieee80211_local *local);
 635 void ieee80211_stop_scan(struct ieee80211_local *local);
 636
 637
 638
 639 /* Least common multiple of the used rates (in 100 kbps). This is used to
 640  * calculate rate_inv values for each rate so that only integers are needed. */
 641 #define CHAN_UTIL_RATE_LCM 95040
 642 /* 1 usec is 1/8 * (95040/10) = 1188 */
 643 #define CHAN_UTIL_PER_USEC 1188
 644 /* Amount of bits to shift the result right to scale the total utilization
 645  * to values that will not wrap around 32-bit integers. */
 646 #define CHAN_UTIL_SHIFT 9
 647 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
 648  * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
 649  * raw value with about 23 should give utilization in 10th of a percentage
 650  * (1/1000). However, utilization is only estimated and not all intervals
 651  * between frames etc. are calculated. 18 seems to give numbers that are closer
 652  * to the real maximum. */
 653 #define CHAN_UTIL_PER_10MS 18
 654 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
 655 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
 656
 657
 658 /* ieee80211_ioctl.c */
 659 int ieee80211_set_compression(struct ieee80211_local *local,
 660                               struct net_device *dev, struct sta_info *sta);
 661 int ieee80211_init_client(struct net_device *dev);
 662 /* ieee80211_sta.c */
 663 void ieee80211_sta_work(struct work_struct *work);
 664 void ieee80211_sta_scan_work(struct work_struct *work);
 665 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
 666                            struct ieee80211_rx_status *rx_status);
 667 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
 668 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
 669 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
 670 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
 671 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
 672 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
 673                            struct ieee80211_rx_status *rx_status);
 674 void ieee80211_rx_bss_list_init(struct net_device *dev);
 675 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
 676 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
 677 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
 678                                          struct sk_buff *skb, u8 *bssid,
 679                                          u8 *addr);
 680 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
 681 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
 682
 683 /* ieee80211_dev.c */
 684 int ieee80211_dev_alloc_index(struct ieee80211_local *local);
 685 void ieee80211_dev_free_index(struct ieee80211_local *local);
 686 struct ieee80211_local *ieee80211_dev_find(int index);
 687 int ieee80211_dev_find_index(struct ieee80211_local *local);
 688 struct ieee80211_local *ieee80211_dev_alloc(gfp_t flags);
 689 void ieee80211_dev_free(struct ieee80211_local *local);
 690
 691 /* ieee80211_iface.c */
 692 int ieee80211_if_add(struct net_device *dev, const char *name,
 693                      int format, struct net_device **new_dev);
 694 void ieee80211_if_set_type(struct net_device *dev, int type);
 695 void ieee80211_if_reinit(struct net_device *dev);
 696 void __ieee80211_if_del(struct ieee80211_local *local,
 697                         struct ieee80211_sub_if_data *sdata);
 698 void ieee80211_if_del(struct net_device *dev);
 699 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
 700 void ieee80211_if_free(struct net_device *dev);
 701 void ieee80211_if_flush(struct net_device *dev);
 702 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
 703 int ieee80211_if_add_mgmt(struct ieee80211_local *local);
 704 void ieee80211_if_del_mgmt(struct ieee80211_local *local);
 705
 706 /* ieee80211_sysfs.c */
 707 int ieee80211_sysfs_add_netdevice(struct net_device *dev);
 708 void ieee80211_sysfs_remove_netdevice(struct net_device *dev);
 709 void ieee80211_dev_sysfs_init(struct ieee80211_local *local);
 710 void ieee80211_dev_sysfs_put(struct ieee80211_local *local);
 711 int ieee80211_dev_sysfs_add(struct ieee80211_local *local);
 712 void ieee80211_dev_sysfs_del(struct ieee80211_local *local);
 713 int ieee80211_sysfs_init(void);
 714 void ieee80211_sysfs_deinit(void);
 715 int ieee80211_sysfs_change_if_type(struct net_device *dev);
 716
 717 /* ieee80211_sysfs_sta.c */
 718 int ieee80211_sta_kset_sysfs_register(struct ieee80211_local *local);
 719 void ieee80211_sta_kset_sysfs_unregister(struct ieee80211_local *local);
 720 int ieee80211_sta_sysfs_add(struct sta_info *sta);
 721 void ieee80211_sta_sysfs_remove(struct sta_info *sta);
 722 int ieee80211_key_kset_sysfs_register(struct ieee80211_sub_if_data *sdata);
 723 void ieee80211_key_kset_sysfs_unregister(struct ieee80211_sub_if_data *sdata);
 724 void ieee80211_key_sysfs_set_kset(struct ieee80211_key *key, struct kset *kset);
 725 int ieee80211_key_sysfs_add(struct ieee80211_key *key);
 726 void ieee80211_key_sysfs_remove(struct ieee80211_key *key);
 727 int ieee80211_key_sysfs_add_default(struct ieee80211_sub_if_data *sdata);
 728 void ieee80211_key_sysfs_remove_default(struct ieee80211_sub_if_data *sdata);
 729
 730 #endif /* IEEE80211_I_H */