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