package/mac80211/src/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 /* Minimum and Maximum TSID used by EDCA. EDCA uses 0~7; HCCA uses 8~15 */
  63 #define EDCA_TSID_MIN 0
  64 #define EDCA_TSID_MAX 7
  65
  66 struct ieee80211_fragment_entry {
  67         unsigned long first_frag_time;
  68         unsigned int seq;
  69         unsigned int rx_queue;
  70         unsigned int last_frag;
  71         unsigned int extra_len;
  72         struct sk_buff_head skb_list;
  73         int ccmp; /* Whether fragments were encrypted with CCMP */
  74         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  75 };
  76
  77
  78 struct ieee80211_sta_bss {
  79         struct list_head list;
  80         struct ieee80211_sta_bss *hnext;
  81         atomic_t users;
  82
  83         u8 bssid[ETH_ALEN];
  84         u8 ssid[IEEE80211_MAX_SSID_LEN];
  85         size_t ssid_len;
  86         u16 capability; /* host byte order */
  87         int hw_mode;
  88         int channel;
  89         int freq;
  90         int rssi, signal, noise;
  91         u8 *wpa_ie;
  92         size_t wpa_ie_len;
  93         u8 *rsn_ie;
  94         size_t rsn_ie_len;
  95         u8 *wmm_ie;
  96         size_t wmm_ie_len;
  97         u8 *ht_ie;
  98         size_t ht_ie_len;
  99 #define IEEE80211_MAX_SUPP_RATES 32
 100         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 101         size_t supp_rates_len;
 102         int beacon_int;
 103         u64 timestamp;
 104
 105         int probe_resp;
 106         unsigned long last_update;
 107
 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                         u16 qos_control;
 151                         unsigned int in_scan:1;
 152                         /* frame is destined to interface currently processed
 153                          * (including multicast frames) */
 154                         unsigned int ra_match:1;
 155                         unsigned int is_agg_frame:1;
 156                 } rx;
 157         } u;
 158 #ifdef CONFIG_HOSTAPD_WPA_TESTING
 159         int wpa_test;
 160 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
 161 };
 162
 163 /* Stored in sk_buff->cb */
 164 struct ieee80211_tx_packet_data {
 165         int ifindex;
 166         unsigned long jiffies;
 167         unsigned int req_tx_status:1;
 168         unsigned int do_not_encrypt:1;
 169         unsigned int requeue:1;
 170         unsigned int mgmt_iface:1;
 171         unsigned int queue:4;
 172 };
 173
 174 struct ieee80211_tx_stored_packet {
 175         struct ieee80211_tx_control control;
 176         struct sk_buff *skb;
 177         int num_extra_frag;
 178         struct sk_buff **extra_frag;
 179         int last_frag_rateidx;
 180         int last_frag_hwrate;
 181         struct ieee80211_rate *last_frag_rate;
 182         unsigned int last_frag_rate_ctrl_probe:1;
 183 };
 184
 185 struct sta_ts_data {
 186         enum {
 187                 TS_STATUS_UNUSED        = 0,
 188                 TS_STATUS_ACTIVE        = 1,
 189                 TS_STATUS_INACTIVE      = 2,
 190                 TS_STATUS_THROTTLING    = 3,
 191         } status;
 192         u8 dialog_token;
 193         u8 up;
 194         u32 admitted_time_usec;
 195         u32 used_time_usec;
 196 };
 197
 198 typedef ieee80211_txrx_result (*ieee80211_tx_handler)
 199 (struct ieee80211_txrx_data *tx);
 200
 201 typedef ieee80211_txrx_result (*ieee80211_rx_handler)
 202 (struct ieee80211_txrx_data *rx);
 203
 204 struct ieee80211_if_ap {
 205         u8 *beacon_head, *beacon_tail;
 206         int beacon_head_len, beacon_tail_len;
 207
 208         u8 ssid[IEEE80211_MAX_SSID_LEN];
 209         size_t ssid_len;
 210         u8 *generic_elem;
 211         size_t generic_elem_len;
 212
 213         /* yes, this looks ugly, but guarantees that we can later use
 214          * bitmap_empty :)
 215          * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
 216         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
 217         atomic_t num_sta_ps; /* number of stations in PS mode */
 218         struct sk_buff_head ps_bc_buf;
 219         int dtim_period, dtim_count;
 220         int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
 221         int max_ratectrl_rateidx; /* max TX rateidx for rate control */
 222         int num_beacons; /* number of TXed beacon frames for this BSS */
 223 };
 224
 225 struct ieee80211_if_wds {
 226         u8 remote_addr[ETH_ALEN];
 227         struct sta_info *sta;
 228 };
 229
 230 struct ieee80211_if_vlan {
 231         u8 id;
 232 };
 233
 234 struct ieee80211_if_sta {
 235         enum {
 236                 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
 237                 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
 238                 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
 239         } state;
 240         struct timer_list timer;
 241         struct work_struct work;
 242         struct timer_list admit_timer; /* Recompute EDCA admitted time */
 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         unsigned int ht_enabled:1;
 268         unsigned int auto_ssid_sel:1;
 269         unsigned int auto_bssid_sel:1;
 270         unsigned int auto_channel_sel:1;
 271 #define IEEE80211_STA_REQ_SCAN 0
 272 #define IEEE80211_STA_REQ_AUTH 1
 273 #define IEEE80211_STA_REQ_RUN  2
 274         unsigned long request;
 275         struct sk_buff_head skb_queue;
 276
 277         int key_mgmt;
 278         unsigned long last_probe;
 279
 280 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
 281 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
 282 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
 283         unsigned int auth_algs; /* bitfield of allowed auth algs */
 284         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 285         int auth_transaction;
 286
 287         unsigned long ibss_join_req;
 288         struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
 289         u32 supp_rates_bits;
 290
 291         int wmm_last_param_set;
 292
 293         u32 dot11EDCAAveragingPeriod;
 294         u32 MPDUExchangeTime;
 295 #define STA_TSID_NUM   16
 296 #define STA_TSDIR_NUM  2
 297         /* EDCA: 0~7, HCCA: 8~15 */
 298         struct sta_ts_data ts_data[STA_TSID_NUM][STA_TSDIR_NUM];
 299 };
 300
 301
 302 struct ieee80211_sub_if_data {
 303         struct list_head list;
 304         unsigned int type;
 305
 306         struct wireless_dev wdev;
 307
 308         struct net_device *dev;
 309         struct ieee80211_local *local;
 310
 311         int mc_count;
 312         unsigned int allmulti:1;
 313         unsigned int promisc:1;
 314
 315         struct net_device_stats stats;
 316         int drop_unencrypted;
 317         int eapol; /* 0 = process EAPOL frames as normal data frames,
 318                     * 1 = send EAPOL frames through wlan#ap to hostapd
 319                     *     (default) */
 320         int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
 321                          * port */
 322
 323         u16 sequence;
 324
 325         /* Fragment table for host-based reassembly */
 326         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
 327         unsigned int fragment_next;
 328
 329 #define NUM_DEFAULT_KEYS 4
 330         struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
 331         struct ieee80211_key *default_key;
 332
 333         struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
 334
 335         union {
 336                 struct ieee80211_if_ap ap;
 337                 struct ieee80211_if_wds wds;
 338                 struct ieee80211_if_vlan vlan;
 339                 struct ieee80211_if_sta sta;
 340         } u;
 341         int channel_use;
 342         int channel_use_raw;
 343
 344 #ifdef CONFIG_MAC80211_DEBUGFS
 345         struct dentry *debugfsdir;
 346         union {
 347                 struct {
 348                         struct dentry *channel_use;
 349                         struct dentry *drop_unencrypted;
 350                         struct dentry *eapol;
 351                         struct dentry *ieee8021_x;
 352                         struct dentry *state;
 353                         struct dentry *bssid;
 354                         struct dentry *prev_bssid;
 355                         struct dentry *ssid_len;
 356                         struct dentry *aid;
 357                         struct dentry *ap_capab;
 358                         struct dentry *capab;
 359                         struct dentry *extra_ie_len;
 360                         struct dentry *auth_tries;
 361                         struct dentry *assoc_tries;
 362                         struct dentry *auth_algs;
 363                         struct dentry *auth_alg;
 364                         struct dentry *auth_transaction;
 365                         struct dentry *flags;
 366                         struct dentry *qos_dir;
 367                         struct {
 368                                 struct dentry *addts_11e;
 369                                 struct dentry *addts_wmm;
 370                                 struct dentry *delts_11e;
 371                                 struct dentry *delts_wmm;
 372                                 struct dentry *dls_mac;
 373                                 struct dentry *dls_op;
 374                         } qos;
 375                         struct dentry *tsinfo_dir;
 376                         struct {
 377                                 struct dentry *tsid;
 378                                 struct dentry *direction;
 379                                 struct dentry *up;
 380                         } tsinfo;
 381                         struct dentry *tspec_dir;
 382                         struct {
 383                                 struct dentry *nominal_msdu_size;
 384                                 struct dentry *max_msdu_size;
 385                                 struct dentry *min_service_interval;
 386                                 struct dentry *max_service_interval;
 387                                 struct dentry *inactivity_interval;
 388                                 struct dentry *suspension_interval;
 389                                 struct dentry *service_start_time;
 390                                 struct dentry *min_data_rate;
 391                                 struct dentry *mean_data_rate;
 392                                 struct dentry *peak_data_rate;
 393                                 struct dentry *burst_size;
 394                                 struct dentry *delay_bound;
 395                                 struct dentry *min_phy_rate;
 396                                 struct dentry *surplus_band_allow;
 397                                 struct dentry *medium_time;
 398                         } tspec;
 399                 } sta;
 400                 struct {
 401                         struct dentry *channel_use;
 402                         struct dentry *drop_unencrypted;
 403                         struct dentry *eapol;
 404                         struct dentry *ieee8021_x;
 405                         struct dentry *num_sta_ps;
 406                         struct dentry *dtim_period;
 407                         struct dentry *dtim_count;
 408                         struct dentry *num_beacons;
 409                         struct dentry *force_unicast_rateidx;
 410                         struct dentry *max_ratectrl_rateidx;
 411                         struct dentry *num_buffered_multicast;
 412                         struct dentry *beacon_head_len;
 413                         struct dentry *beacon_tail_len;
 414                 } ap;
 415                 struct {
 416                         struct dentry *channel_use;
 417                         struct dentry *drop_unencrypted;
 418                         struct dentry *eapol;
 419                         struct dentry *ieee8021_x;
 420                         struct dentry *peer;
 421                 } wds;
 422                 struct {
 423                         struct dentry *channel_use;
 424                         struct dentry *drop_unencrypted;
 425                         struct dentry *eapol;
 426                         struct dentry *ieee8021_x;
 427                         struct dentry *vlan_id;
 428                 } vlan;
 429                 struct {
 430                         struct dentry *mode;
 431                 } monitor;
 432                 struct dentry *default_key;
 433         } debugfs;
 434 #endif
 435 };
 436
 437 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
 438
 439 enum {
 440         IEEE80211_RX_MSG        = 1,
 441         IEEE80211_TX_STATUS_MSG = 2,
 442 };
 443
 444 struct ieee80211_local {
 445         /* embed the driver visible part.
 446          * don't cast (use the static inlines below), but we keep
 447          * it first anyway so they become a no-op */
 448         struct ieee80211_hw hw;
 449
 450         const struct ieee80211_ops *ops;
 451
 452         /* List of registered struct ieee80211_hw_mode */
 453         struct list_head modes_list;
 454
 455         struct net_device *mdev; /* wmaster# - "master" 802.11 device */
 456         struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
 457         int open_count;
 458         int monitors;
 459         struct iw_statistics wstats;
 460         u8 wstats_flags;
 461
 462         enum {
 463                 IEEE80211_DEV_UNINITIALIZED = 0,
 464                 IEEE80211_DEV_REGISTERED,
 465                 IEEE80211_DEV_UNREGISTERED,
 466         } reg_state;
 467
 468         /* Tasklet and skb queue to process calls from IRQ mode. All frames
 469          * added to skb_queue will be processed, but frames in
 470          * skb_queue_unreliable may be dropped if the total length of these
 471          * queues increases over the limit. */
 472 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
 473         struct tasklet_struct tasklet;
 474         struct sk_buff_head skb_queue;
 475         struct sk_buff_head skb_queue_unreliable;
 476
 477         /* Station data structures */
 478         spinlock_t sta_lock; /* mutex for STA data structures */
 479         int num_sta; /* number of stations in sta_list */
 480         struct list_head sta_list;
 481         struct list_head deleted_sta_list;
 482         struct sta_info *sta_hash[STA_HASH_SIZE];
 483         struct timer_list sta_cleanup;
 484
 485         unsigned long state[NUM_TX_DATA_QUEUES];
 486         struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
 487         struct tasklet_struct tx_pending_tasklet;
 488
 489         int mc_count;   /* total count of multicast entries in all interfaces */
 490         int iff_allmultis, iff_promiscs;
 491                         /* number of interfaces with corresponding IFF_ flags */
 492
 493         struct rate_control_ref *rate_ctrl;
 494
 495         int next_mode; /* MODE_IEEE80211*
 496                         * The mode preference for next channel change. This is
 497                         * used to select .11g vs. .11b channels (or 4.9 GHz vs.
 498                         * .11a) when the channel number is not unique. */
 499
 500         /* Supported and basic rate filters for different modes. These are
 501          * pointers to -1 terminated lists and rates in 100 kbps units. */
 502         int *supp_rates[NUM_IEEE80211_MODES];
 503         int *basic_rates[NUM_IEEE80211_MODES];
 504
 505         int rts_threshold;
 506         int cts_protect_erp_frames;
 507         int fragmentation_threshold;
 508         int short_retry_limit; /* dot11ShortRetryLimit */
 509         int long_retry_limit; /* dot11LongRetryLimit */
 510         int short_preamble; /* use short preamble with IEEE 802.11b */
 511
 512         struct crypto_blkcipher *wep_tx_tfm;
 513         struct crypto_blkcipher *wep_rx_tfm;
 514         u32 wep_iv;
 515         int key_tx_rx_threshold; /* number of times any key can be used in TX
 516                                   * or RX before generating a rekey
 517                                   * notification; 0 = notification disabled. */
 518
 519         int bridge_packets; /* bridge packets between associated stations and
 520                              * deliver multicast frames both back to wireless
 521                              * media and to the local net stack */
 522
 523         ieee80211_rx_handler *rx_pre_handlers;
 524         ieee80211_rx_handler *rx_handlers;
 525         ieee80211_tx_handler *tx_handlers;
 526
 527         rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
 528                                * sta_bss_lock or sta_lock. */
 529         struct list_head sub_if_list;
 530         int sta_scanning;
 531         int scan_channel_idx;
 532         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 533         unsigned long last_scan_completed;
 534         struct delayed_work scan_work;
 535         struct net_device *scan_dev;
 536         struct ieee80211_channel *oper_channel, *scan_channel;
 537         struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
 538         u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
 539         size_t scan_ssid_len;
 540         struct list_head sta_bss_list;
 541         struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
 542         spinlock_t sta_bss_lock;
 543 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
 544 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
 545 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
 546         int scan_flags;
 547
 548 #ifdef CONFIG_HOSTAPD_WPA_TESTING
 549         u32 wpa_trigger;
 550 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
 551         /* SNMP counters */
 552         /* dot11CountersTable */
 553         u32 dot11TransmittedFragmentCount;
 554         u32 dot11MulticastTransmittedFrameCount;
 555         u32 dot11FailedCount;
 556         u32 dot11RetryCount;
 557         u32 dot11MultipleRetryCount;
 558         u32 dot11FrameDuplicateCount;
 559         u32 dot11ReceivedFragmentCount;
 560         u32 dot11MulticastReceivedFrameCount;
 561         u32 dot11TransmittedFrameCount;
 562         u32 dot11WEPUndecryptableCount;
 563
 564 #ifdef CONFIG_MAC80211_LEDS
 565         int tx_led_counter, rx_led_counter;
 566         struct led_trigger *tx_led, *rx_led;
 567         char tx_led_name[32], rx_led_name[32];
 568 #endif
 569
 570         u32 channel_use;
 571         u32 channel_use_raw;
 572         u32 stat_time;
 573         struct timer_list stat_timer;
 574
 575 #ifdef CONFIG_MAC80211_DEBUGFS
 576         struct work_struct sta_debugfs_add;
 577 #endif
 578
 579         enum {
 580                 STA_ANTENNA_SEL_AUTO = 0,
 581                 STA_ANTENNA_SEL_SW_CTRL = 1,
 582                 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
 583         } sta_antenna_sel;
 584
 585         int rate_ctrl_num_up, rate_ctrl_num_down;
 586
 587 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 588         /* TX/RX handler statistics */
 589         unsigned int tx_handlers_drop;
 590         unsigned int tx_handlers_queued;
 591         unsigned int tx_handlers_drop_unencrypted;
 592         unsigned int tx_handlers_drop_fragment;
 593         unsigned int tx_handlers_drop_wep;
 594         unsigned int tx_handlers_drop_not_assoc;
 595         unsigned int tx_handlers_drop_unauth_port;
 596         unsigned int rx_handlers_drop;
 597         unsigned int rx_handlers_queued;
 598         unsigned int rx_handlers_drop_nullfunc;
 599         unsigned int rx_handlers_drop_defrag;
 600         unsigned int rx_handlers_drop_short;
 601         unsigned int rx_handlers_drop_passive_scan;
 602         unsigned int tx_expand_skb_head;
 603         unsigned int tx_expand_skb_head_cloned;
 604         unsigned int rx_expand_skb_head;
 605         unsigned int rx_expand_skb_head2;
 606         unsigned int rx_handlers_fragments;
 607         unsigned int tx_status_drop;
 608         unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
 609         unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
 610 #define I802_DEBUG_INC(c) (c)++
 611 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
 612 #define I802_DEBUG_INC(c) do { } while (0)
 613 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 614
 615
 616         int default_wep_only; /* only default WEP keys are used with this
 617                                * interface; this is used to decide when hwaccel
 618                                * can be used with default keys */
 619         int total_ps_buffered; /* total number of all buffered unicast and
 620                                 * multicast packets for power saving stations
 621                                 */
 622         int allow_broadcast_always; /* whether to allow TX of broadcast frames
 623                                      * even when there are no associated STAs
 624                                      */
 625
 626         int wifi_wme_noack_test;
 627         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 628
 629         unsigned int enabled_modes; /* bitfield of allowed modes;
 630                                       * (1 << MODE_*) */
 631         unsigned int hw_modes; /* bitfield of supported hardware modes;
 632                                 * (1 << MODE_*) */
 633
 634         int user_space_mlme;
 635
 636 #ifdef CONFIG_MAC80211_DEBUGFS
 637         struct local_debugfsdentries {
 638                 struct dentry *channel;
 639                 struct dentry *frequency;
 640                 struct dentry *radar_detect;
 641                 struct dentry *antenna_sel_tx;
 642                 struct dentry *antenna_sel_rx;
 643                 struct dentry *bridge_packets;
 644                 struct dentry *key_tx_rx_threshold;
 645                 struct dentry *rts_threshold;
 646                 struct dentry *fragmentation_threshold;
 647                 struct dentry *short_retry_limit;
 648                 struct dentry *long_retry_limit;
 649                 struct dentry *total_ps_buffered;
 650                 struct dentry *mode;
 651                 struct dentry *wep_iv;
 652                 struct dentry *rate_ctrl_alg;
 653                 struct dentry *tx_power_reduction;
 654                 struct dentry *modes;
 655                 struct dentry *statistics;
 656                 struct local_debugfsdentries_statsdentries {
 657                         struct dentry *transmitted_fragment_count;
 658                         struct dentry *multicast_transmitted_frame_count;
 659                         struct dentry *failed_count;
 660                         struct dentry *retry_count;
 661                         struct dentry *multiple_retry_count;
 662                         struct dentry *frame_duplicate_count;
 663                         struct dentry *received_fragment_count;
 664                         struct dentry *multicast_received_frame_count;
 665                         struct dentry *transmitted_frame_count;
 666                         struct dentry *wep_undecryptable_count;
 667                         struct dentry *num_scans;
 668 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 669                         struct dentry *tx_handlers_drop;
 670                         struct dentry *tx_handlers_queued;
 671                         struct dentry *tx_handlers_drop_unencrypted;
 672                         struct dentry *tx_handlers_drop_fragment;
 673                         struct dentry *tx_handlers_drop_wep;
 674                         struct dentry *tx_handlers_drop_not_assoc;
 675                         struct dentry *tx_handlers_drop_unauth_port;
 676                         struct dentry *rx_handlers_drop;
 677                         struct dentry *rx_handlers_queued;
 678                         struct dentry *rx_handlers_drop_nullfunc;
 679                         struct dentry *rx_handlers_drop_defrag;
 680                         struct dentry *rx_handlers_drop_short;
 681                         struct dentry *rx_handlers_drop_passive_scan;
 682                         struct dentry *tx_expand_skb_head;
 683                         struct dentry *tx_expand_skb_head_cloned;
 684                         struct dentry *rx_expand_skb_head;
 685                         struct dentry *rx_expand_skb_head2;
 686                         struct dentry *rx_handlers_fragments;
 687                         struct dentry *tx_status_drop;
 688                         struct dentry *wme_tx_queue;
 689                         struct dentry *wme_rx_queue;
 690 #endif
 691                         struct dentry *dot11ACKFailureCount;
 692                         struct dentry *dot11RTSFailureCount;
 693                         struct dentry *dot11FCSErrorCount;
 694                         struct dentry *dot11RTSSuccessCount;
 695                 } stats;
 696                 struct dentry *stations;
 697                 struct dentry *keys;
 698         } debugfs;
 699 #endif
 700 };
 701
 702 enum sta_link_direction {
 703         STA_TS_UPLINK = 0,
 704         STA_TS_DOWNLINK = 1,
 705 };
 706
 707 static inline struct ieee80211_local *hw_to_local(
 708         struct ieee80211_hw *hw)
 709 {
 710         return container_of(hw, struct ieee80211_local, hw);
 711 }
 712
 713 static inline struct ieee80211_hw *local_to_hw(
 714         struct ieee80211_local *local)
 715 {
 716         return &local->hw;
 717 }
 718
 719 enum ieee80211_link_state_t {
 720         IEEE80211_LINK_STATE_XOFF = 0,
 721         IEEE80211_LINK_STATE_PENDING,
 722 };
 723
 724 struct sta_attribute {
 725         struct attribute attr;
 726         ssize_t (*show)(const struct sta_info *, char *buf);
 727         ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
 728 };
 729
 730 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
 731 {
 732         /*
 733          * This format has ben mandated by the IEEE specifications,
 734          * so this line may not be changed to use the __set_bit() format.
 735          */
 736         bss->tim[(aid)/8] |= 1<<((aid) % 8);
 737 }
 738
 739 static inline void bss_tim_set(struct ieee80211_local *local,
 740                                struct ieee80211_if_ap *bss, int aid)
 741 {
 742         spin_lock_bh(&local->sta_lock);
 743         __bss_tim_set(bss, aid);
 744         spin_unlock_bh(&local->sta_lock);
 745 }
 746
 747 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
 748 {
 749         /*
 750          * This format has ben mandated by the IEEE specifications,
 751          * so this line may not be changed to use the __clear_bit() format.
 752          */
 753         bss->tim[(aid)/8] &= !(1<<((aid) % 8));
 754 }
 755
 756 static inline void bss_tim_clear(struct ieee80211_local *local,
 757                                  struct ieee80211_if_ap *bss, int aid)
 758 {
 759         spin_lock_bh(&local->sta_lock);
 760         __bss_tim_clear(bss, aid);
 761         spin_unlock_bh(&local->sta_lock);
 762 }
 763
 764 /**
 765  * ieee80211_is_erp_rate - Check if a rate is an ERP rate
 766  * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
 767  * @rate: Transmission rate to check, in 100 kbps
 768  *
 769  * Check if a given rate is an Extended Rate PHY (ERP) rate.
 770  */
 771 static inline int ieee80211_is_erp_rate(int phymode, int rate)
 772 {
 773         if (phymode == MODE_IEEE80211G) {
 774                 if (rate != 10 && rate != 20 &&
 775                     rate != 55 && rate != 110)
 776                         return 1;
 777         }
 778         return 0;
 779 }
 780
 781 /* ieee80211.c */
 782 int ieee80211_hw_config(struct ieee80211_local *local);
 783 int ieee80211_if_config(struct net_device *dev);
 784 int ieee80211_if_config_beacon(struct net_device *dev);
 785 struct ieee80211_key_conf *
 786 ieee80211_key_data2conf(struct ieee80211_local *local,
 787                         const struct ieee80211_key *data);
 788 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
 789                                           int idx, size_t key_len, gfp_t flags);
 790 void ieee80211_key_free(struct ieee80211_key *key);
 791 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
 792                        struct ieee80211_rx_status *status, u32 msg_type);
 793 void ieee80211_prepare_rates(struct ieee80211_local *local,
 794                              struct ieee80211_hw_mode *mode);
 795 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
 796 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
 797 void ieee80211_if_setup(struct net_device *dev);
 798 void ieee80211_if_mgmt_setup(struct net_device *dev);
 799 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
 800                                  const char *name);
 801 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
 802
 803 /* ieee80211_ioctl.c */
 804 int ieee80211_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 805 extern const struct iw_handler_def ieee80211_iw_handler_def;
 806
 807 /* Set hw encryption from ieee80211 */
 808 int ieee80211_set_hw_encryption(struct net_device *dev,
 809                                 struct sta_info *sta, u8 addr[ETH_ALEN],
 810                                 struct ieee80211_key *key);
 811 void ieee80211_update_default_wep_only(struct ieee80211_local *local);
 812
 813
 814 /* Least common multiple of the used rates (in 100 kbps). This is used to
 815  * calculate rate_inv values for each rate so that only integers are needed. */
 816 #define CHAN_UTIL_RATE_LCM 95040
 817 /* 1 usec is 1/8 * (95040/10) = 1188 */
 818 #define CHAN_UTIL_PER_USEC 1188
 819 /* Amount of bits to shift the result right to scale the total utilization
 820  * to values that will not wrap around 32-bit integers. */
 821 #define CHAN_UTIL_SHIFT 9
 822 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
 823  * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
 824  * raw value with about 23 should give utilization in 10th of a percentage
 825  * (1/1000). However, utilization is only estimated and not all intervals
 826  * between frames etc. are calculated. 18 seems to give numbers that are closer
 827  * to the real maximum. */
 828 #define CHAN_UTIL_PER_10MS 18
 829 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
 830 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
 831
 832
 833 /* ieee80211_ioctl.c */
 834 int ieee80211_set_compression(struct ieee80211_local *local,
 835                               struct net_device *dev, struct sta_info *sta);
 836 int ieee80211_init_client(struct net_device *dev);
 837 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
 838 /* ieee80211_sta.c */
 839 void ieee80211_sta_timer(unsigned long data);
 840 void ieee80211_sta_work(struct work_struct *work);
 841 void ieee80211_admit_refresh(unsigned long ptr);
 842 void ieee80211_sta_scan_work(struct work_struct *work);
 843 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
 844                            struct ieee80211_rx_status *rx_status);
 845 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
 846 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
 847 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
 848 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
 849 void ieee80211_sta_req_auth(struct net_device *dev,
 850                             struct ieee80211_if_sta *ifsta);
 851 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
 852 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
 853                            struct ieee80211_rx_status *rx_status);
 854 void ieee80211_rx_bss_list_init(struct net_device *dev);
 855 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
 856 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
 857 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
 858                                          struct sk_buff *skb, u8 *bssid,
 859                                          u8 *addr);
 860 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
 861 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
 862 void ieee80211_send_addts(struct net_device *dev,
 863                           struct ieee80211_if_sta *ifsta,
 864                           struct ieee80211_elem_tspec *tspec);
 865 void wmm_send_addts(struct net_device *dev,
 866                     struct ieee80211_if_sta *ifsta,
 867                     struct ieee80211_elem_tspec *tspec);
 868 void ieee80211_send_delts(struct net_device *dev,
 869                           struct ieee80211_if_sta *ifsta,
 870                           struct ieee80211_elem_tspec *tp);
 871 void wmm_send_delts(struct net_device *dev,
 872                     struct ieee80211_if_sta *ifsta,
 873                     struct ieee80211_elem_tspec *tp);
 874 void ieee80211_send_dls_req(struct net_device *dev,
 875                             struct ieee80211_if_sta *ifsta,
 876                             u8 *addr, u32 timeout);
 877 void ieee80211_send_dls_teardown(struct net_device *dev,
 878                                  struct ieee80211_if_sta *ifsta,
 879                                  u8 *mac, u16 reason);
 880 struct sta_info *dls_info_get(struct ieee80211_local *local, u8 *addr);
 881 void dls_info_add(struct ieee80211_if_sta *ifsta, struct sta_info *dls);
 882 void dls_info_stop(struct ieee80211_if_sta *ifsta);
 883 int dls_link_status(struct ieee80211_local *local, u8 *addr);
 884
 885 /* ieee80211_iface.c */
 886 int ieee80211_if_add(struct net_device *dev, const char *name,
 887                      struct net_device **new_dev, int type);
 888 void ieee80211_if_set_type(struct net_device *dev, int type);
 889 void ieee80211_if_reinit(struct net_device *dev);
 890 void __ieee80211_if_del(struct ieee80211_local *local,
 891                         struct ieee80211_sub_if_data *sdata);
 892 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
 893 void ieee80211_if_free(struct net_device *dev);
 894 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
 895 int ieee80211_if_add_mgmt(struct ieee80211_local *local);
 896 void ieee80211_if_del_mgmt(struct ieee80211_local *local);
 897
 898 /* for wiphy privid */
 899 extern void *mac80211_wiphy_privid;
 900
 901 #endif /* IEEE80211_I_H */