include/net/ieee80211.h

   1 /*
   2  * Merged with mainline ieee80211.h in Aug 2004.  Original ieee802_11
   3  * remains copyright by the original authors
   4  *
   5  * Portions of the merged code are based on Host AP (software wireless
   6  * LAN access point) driver for Intersil Prism2/2.5/3.
   7  *
   8  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   9  * <jkmaline@cc.hut.fi>
  10  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
  11  *
  12  * Adaption to a generic IEEE 802.11 stack by James Ketrenos
  13  * <jketreno@linux.intel.com>
  14  * Copyright (c) 2004, Intel Corporation
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License version 2 as
  18  * published by the Free Software Foundation. See README and COPYING for
  19  * more details.
  20  */
  21 #ifndef IEEE80211_H
  22 #define IEEE80211_H
  23 #include <linux/if_ether.h>     /* ETH_ALEN */
  24 #include <linux/kernel.h>       /* ARRAY_SIZE */
  25 #include <linux/wireless.h>
  26
  27 #define IEEE80211_DATA_LEN              2304
  28 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
  29    6.2.1.1.2.
  30
  31    The figure in section 7.1.2 suggests a body size of up to 2312
  32    bytes is allowed, which is a bit confusing, I suspect this
  33    represents the 2304 bytes of real data, plus a possible 8 bytes of
  34    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
  35
  36 #define IEEE80211_1ADDR_LEN 10
  37 #define IEEE80211_2ADDR_LEN 16
  38 #define IEEE80211_3ADDR_LEN 24
  39 #define IEEE80211_4ADDR_LEN 30
  40 #define IEEE80211_FCS_LEN    4
  41 #define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
  42 #define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
  43
  44 #define MIN_FRAG_THRESHOLD     256U
  45 #define MAX_FRAG_THRESHOLD     2346U
  46
  47 /* Frame control field constants */
  48 #define IEEE80211_FCTL_VERS             0x0003
  49 #define IEEE80211_FCTL_FTYPE            0x000c
  50 #define IEEE80211_FCTL_STYPE            0x00f0
  51 #define IEEE80211_FCTL_TODS             0x0100
  52 #define IEEE80211_FCTL_FROMDS           0x0200
  53 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  54 #define IEEE80211_FCTL_RETRY            0x0800
  55 #define IEEE80211_FCTL_PM               0x1000
  56 #define IEEE80211_FCTL_MOREDATA         0x2000
  57 #define IEEE80211_FCTL_PROTECTED        0x4000
  58 #define IEEE80211_FCTL_ORDER            0x8000
  59
  60 #define IEEE80211_FTYPE_MGMT            0x0000
  61 #define IEEE80211_FTYPE_CTL             0x0004
  62 #define IEEE80211_FTYPE_DATA            0x0008
  63
  64 /* management */
  65 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  66 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  67 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  68 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  69 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  70 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  71 #define IEEE80211_STYPE_BEACON          0x0080
  72 #define IEEE80211_STYPE_ATIM            0x0090
  73 #define IEEE80211_STYPE_DISASSOC        0x00A0
  74 #define IEEE80211_STYPE_AUTH            0x00B0
  75 #define IEEE80211_STYPE_DEAUTH          0x00C0
  76 #define IEEE80211_STYPE_ACTION          0x00D0
  77
  78 /* control */
  79 #define IEEE80211_STYPE_PSPOLL          0x00A0
  80 #define IEEE80211_STYPE_RTS             0x00B0
  81 #define IEEE80211_STYPE_CTS             0x00C0
  82 #define IEEE80211_STYPE_ACK             0x00D0
  83 #define IEEE80211_STYPE_CFEND           0x00E0
  84 #define IEEE80211_STYPE_CFENDACK        0x00F0
  85
  86 /* data */
  87 #define IEEE80211_STYPE_DATA            0x0000
  88 #define IEEE80211_STYPE_DATA_CFACK      0x0010
  89 #define IEEE80211_STYPE_DATA_CFPOLL     0x0020
  90 #define IEEE80211_STYPE_DATA_CFACKPOLL  0x0030
  91 #define IEEE80211_STYPE_NULLFUNC        0x0040
  92 #define IEEE80211_STYPE_CFACK           0x0050
  93 #define IEEE80211_STYPE_CFPOLL          0x0060
  94 #define IEEE80211_STYPE_CFACKPOLL       0x0070
  95 #define IEEE80211_STYPE_QOS_DATA        0x0080
  96
  97 #define IEEE80211_SCTL_FRAG             0x000F
  98 #define IEEE80211_SCTL_SEQ              0xFFF0
  99
 100 /* debug macros */
 101
 102 #ifdef CONFIG_IEEE80211_DEBUG
 103 extern u32 ieee80211_debug_level;
 104 #define IEEE80211_DEBUG(level, fmt, args...) \
 105 do { if (ieee80211_debug_level & (level)) \
 106   printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
 107          in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
 108 #else
 109 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
 110 #endif                          /* CONFIG_IEEE80211_DEBUG */
 111
 112 /* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
 113
 114 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
 115 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
 116
 117 /* escape_essid() is intended to be used in debug (and possibly error)
 118  * messages. It should never be used for passing essid to user space. */
 119 const char *escape_essid(const char *essid, u8 essid_len);
 120
 121 /*
 122  * To use the debug system:
 123  *
 124  * If you are defining a new debug classification, simply add it to the #define
 125  * list here in the form of:
 126  *
 127  * #define IEEE80211_DL_xxxx VALUE
 128  *
 129  * shifting value to the left one bit from the previous entry.  xxxx should be
 130  * the name of the classification (for example, WEP)
 131  *
 132  * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
 133  * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
 134  * to send output to that classification.
 135  *
 136  * To add your debug level to the list of levels seen when you perform
 137  *
 138  * % cat /proc/net/ieee80211/debug_level
 139  *
 140  * you simply need to add your entry to the ieee80211_debug_level array.
 141  *
 142  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
 143  * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
 144  *
 145  */
 146
 147 #define IEEE80211_DL_INFO          (1<<0)
 148 #define IEEE80211_DL_WX            (1<<1)
 149 #define IEEE80211_DL_SCAN          (1<<2)
 150 #define IEEE80211_DL_STATE         (1<<3)
 151 #define IEEE80211_DL_MGMT          (1<<4)
 152 #define IEEE80211_DL_FRAG          (1<<5)
 153 #define IEEE80211_DL_DROP          (1<<7)
 154
 155 #define IEEE80211_DL_TX            (1<<8)
 156 #define IEEE80211_DL_RX            (1<<9)
 157 #define IEEE80211_DL_QOS           (1<<31)
 158
 159 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 160 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
 161 #define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
 162
 163 #define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
 164 #define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
 165 #define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
 166 #define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
 167 #define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
 168 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 169 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 170 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
 171 #define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 172 #include <linux/netdevice.h>
 173 #include <linux/wireless.h>
 174 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 175
 176 #ifndef WIRELESS_SPY
 177 #define WIRELESS_SPY            /* enable iwspy support */
 178 #endif
 179 #include <net/iw_handler.h>     /* new driver API */
 180
 181 #ifndef ETH_P_PAE
 182 #define ETH_P_PAE 0x888E        /* Port Access Entity (IEEE 802.1X) */
 183 #endif                          /* ETH_P_PAE */
 184
 185 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 186
 187 #ifndef ETH_P_80211_RAW
 188 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 189 #endif
 190
 191 /* IEEE 802.11 defines */
 192
 193 #define P80211_OUI_LEN 3
 194
 195 struct ieee80211_snap_hdr {
 196
 197         u8 dsap;                /* always 0xAA */
 198         u8 ssap;                /* always 0xAA */
 199         u8 ctrl;                /* always 0x03 */
 200         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 201
 202 } __attribute__ ((packed));
 203
 204 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
 205
 206 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 207 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 208 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 209
 210 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 211 #define WLAN_GET_SEQ_SEQ(seq)  ((seq) & IEEE80211_SCTL_SEQ)
 212
 213 /* Authentication algorithms */
 214 #define WLAN_AUTH_OPEN 0
 215 #define WLAN_AUTH_SHARED_KEY 1
 216
 217 #define WLAN_AUTH_CHALLENGE_LEN 128
 218
 219 #define WLAN_CAPABILITY_ESS (1<<0)
 220 #define WLAN_CAPABILITY_IBSS (1<<1)
 221 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
 222 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 223 #define WLAN_CAPABILITY_PRIVACY (1<<4)
 224 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
 225 #define WLAN_CAPABILITY_PBCC (1<<6)
 226 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 227 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
 228 #define WLAN_CAPABILITY_QOS (1<<9)
 229 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 230 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
 231
 232 /* Status codes */
 233 enum ieee80211_statuscode {
 234         WLAN_STATUS_SUCCESS = 0,
 235         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 236         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 237         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 238         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 239         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 240         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 241         WLAN_STATUS_CHALLENGE_FAIL = 15,
 242         WLAN_STATUS_AUTH_TIMEOUT = 16,
 243         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 244         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 245         /* 802.11b */
 246         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 247         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 248         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 249         /* 802.11h */
 250         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 251         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 252         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 253         /* 802.11g */
 254         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 255         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 256         /* 802.11i */
 257         WLAN_STATUS_INVALID_IE = 40,
 258         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 259         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 260         WLAN_STATUS_INVALID_AKMP = 43,
 261         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 262         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 263         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 264 };
 265
 266 /* Reason codes */
 267 enum ieee80211_reasoncode {
 268         WLAN_REASON_UNSPECIFIED = 1,
 269         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 270         WLAN_REASON_DEAUTH_LEAVING = 3,
 271         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 272         WLAN_REASON_DISASSOC_AP_BUSY = 5,
 273         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 274         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 275         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 276         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 277         /* 802.11h */
 278         WLAN_REASON_DISASSOC_BAD_POWER = 10,
 279         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 280         /* 802.11i */
 281         WLAN_REASON_INVALID_IE = 13,
 282         WLAN_REASON_MIC_FAILURE = 14,
 283         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 284         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 285         WLAN_REASON_IE_DIFFERENT = 17,
 286         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 287         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 288         WLAN_REASON_INVALID_AKMP = 20,
 289         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 290         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 291         WLAN_REASON_IEEE8021X_FAILED = 23,
 292         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 293 };
 294
 295 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 296 #define IEEE80211_STATMASK_RSSI (1<<1)
 297 #define IEEE80211_STATMASK_NOISE (1<<2)
 298 #define IEEE80211_STATMASK_RATE (1<<3)
 299 #define IEEE80211_STATMASK_WEMASK 0x7
 300
 301 #define IEEE80211_CCK_MODULATION    (1<<0)
 302 #define IEEE80211_OFDM_MODULATION   (1<<1)
 303
 304 #define IEEE80211_24GHZ_BAND     (1<<0)
 305 #define IEEE80211_52GHZ_BAND     (1<<1)
 306
 307 #define IEEE80211_CCK_RATE_1MB                  0x02
 308 #define IEEE80211_CCK_RATE_2MB                  0x04
 309 #define IEEE80211_CCK_RATE_5MB                  0x0B
 310 #define IEEE80211_CCK_RATE_11MB                 0x16
 311 #define IEEE80211_OFDM_RATE_6MB                 0x0C
 312 #define IEEE80211_OFDM_RATE_9MB                 0x12
 313 #define IEEE80211_OFDM_RATE_12MB                0x18
 314 #define IEEE80211_OFDM_RATE_18MB                0x24
 315 #define IEEE80211_OFDM_RATE_24MB                0x30
 316 #define IEEE80211_OFDM_RATE_36MB                0x48
 317 #define IEEE80211_OFDM_RATE_48MB                0x60
 318 #define IEEE80211_OFDM_RATE_54MB                0x6C
 319 #define IEEE80211_BASIC_RATE_MASK               0x80
 320
 321 #define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
 322 #define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
 323 #define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
 324 #define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
 325 #define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
 326 #define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
 327 #define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
 328 #define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
 329 #define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
 330 #define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
 331 #define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
 332 #define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)
 333
 334 #define IEEE80211_CCK_RATES_MASK                0x0000000F
 335 #define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
 336         IEEE80211_CCK_RATE_2MB_MASK)
 337 #define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
 338         IEEE80211_CCK_RATE_5MB_MASK | \
 339         IEEE80211_CCK_RATE_11MB_MASK)
 340
 341 #define IEEE80211_OFDM_RATES_MASK               0x00000FF0
 342 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
 343         IEEE80211_OFDM_RATE_12MB_MASK | \
 344         IEEE80211_OFDM_RATE_24MB_MASK)
 345 #define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
 346         IEEE80211_OFDM_RATE_9MB_MASK  | \
 347         IEEE80211_OFDM_RATE_18MB_MASK | \
 348         IEEE80211_OFDM_RATE_36MB_MASK | \
 349         IEEE80211_OFDM_RATE_48MB_MASK | \
 350         IEEE80211_OFDM_RATE_54MB_MASK)
 351 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
 352                                 IEEE80211_CCK_DEFAULT_RATES_MASK)
 353
 354 #define IEEE80211_NUM_OFDM_RATES            8
 355 #define IEEE80211_NUM_CCK_RATES             4
 356 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 357
 358 /* NOTE: This data is for statistical purposes; not all hardware provides this
 359  *       information for frames received.  Not setting these will not cause
 360  *       any adverse affects. */
 361 struct ieee80211_rx_stats {
 362         u32 mac_time;
 363         s8 rssi;
 364         u8 signal;
 365         u8 noise;
 366         u16 rate;               /* in 100 kbps */
 367         u8 received_channel;
 368         u8 control;
 369         u8 mask;
 370         u8 freq;
 371         u16 len;
 372 };
 373
 374 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 375  * three fragmented frames. This define can be increased to support more
 376  * concurrent frames, but it should be noted that each entry can consume about
 377  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 378 #define IEEE80211_FRAG_CACHE_LEN 4
 379
 380 struct ieee80211_frag_entry {
 381         unsigned long first_frag_time;
 382         unsigned int seq;
 383         unsigned int last_frag;
 384         struct sk_buff *skb;
 385         u8 src_addr[ETH_ALEN];
 386         u8 dst_addr[ETH_ALEN];
 387 };
 388
 389 struct ieee80211_stats {
 390         unsigned int tx_unicast_frames;
 391         unsigned int tx_multicast_frames;
 392         unsigned int tx_fragments;
 393         unsigned int tx_unicast_octets;
 394         unsigned int tx_multicast_octets;
 395         unsigned int tx_deferred_transmissions;
 396         unsigned int tx_single_retry_frames;
 397         unsigned int tx_multiple_retry_frames;
 398         unsigned int tx_retry_limit_exceeded;
 399         unsigned int tx_discards;
 400         unsigned int rx_unicast_frames;
 401         unsigned int rx_multicast_frames;
 402         unsigned int rx_fragments;
 403         unsigned int rx_unicast_octets;
 404         unsigned int rx_multicast_octets;
 405         unsigned int rx_fcs_errors;
 406         unsigned int rx_discards_no_buffer;
 407         unsigned int tx_discards_wrong_sa;
 408         unsigned int rx_discards_undecryptable;
 409         unsigned int rx_message_in_msg_fragments;
 410         unsigned int rx_message_in_bad_msg_fragments;
 411 };
 412
 413 struct ieee80211_device;
 414
 415 #include "ieee80211_crypt.h"
 416
 417 #define SEC_KEY_1               (1<<0)
 418 #define SEC_KEY_2               (1<<1)
 419 #define SEC_KEY_3               (1<<2)
 420 #define SEC_KEY_4               (1<<3)
 421 #define SEC_ACTIVE_KEY          (1<<4)
 422 #define SEC_AUTH_MODE           (1<<5)
 423 #define SEC_UNICAST_GROUP       (1<<6)
 424 #define SEC_LEVEL               (1<<7)
 425 #define SEC_ENABLED             (1<<8)
 426 #define SEC_ENCRYPT             (1<<9)
 427
 428 #define SEC_LEVEL_0             0       /* None */
 429 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 430 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 431 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 432 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 433
 434 #define SEC_ALG_NONE            0
 435 #define SEC_ALG_WEP             1
 436 #define SEC_ALG_TKIP            2
 437 #define SEC_ALG_CCMP            3
 438
 439 #define WEP_KEYS                4
 440 #define WEP_KEY_LEN             13
 441 #define SCM_KEY_LEN             32
 442 #define SCM_TEMPORAL_KEY_LENGTH 16
 443
 444 struct ieee80211_security {
 445         u16 active_key:2,
 446             enabled:1,
 447             auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
 448         u8 encode_alg[WEP_KEYS];
 449         u8 key_sizes[WEP_KEYS];
 450         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 451         u8 level;
 452         u16 flags;
 453 } __attribute__ ((packed));
 454
 455 /*
 456
 457  802.11 data frame from AP
 458
 459       ,-------------------------------------------------------------------.
 460 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 461       |------|------|---------|---------|---------|------|---------|------|
 462 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 463       |      | tion | (BSSID) |         |         | ence |  data   |      |
 464       `-------------------------------------------------------------------'
 465
 466 Total: 28-2340 bytes
 467
 468 */
 469
 470 #define BEACON_PROBE_SSID_ID_POSITION 12
 471
 472 /* Management Frame Information Element Types */
 473 enum ieee80211_mfie {
 474         MFIE_TYPE_SSID = 0,
 475         MFIE_TYPE_RATES = 1,
 476         MFIE_TYPE_FH_SET = 2,
 477         MFIE_TYPE_DS_SET = 3,
 478         MFIE_TYPE_CF_SET = 4,
 479         MFIE_TYPE_TIM = 5,
 480         MFIE_TYPE_IBSS_SET = 6,
 481         MFIE_TYPE_COUNTRY = 7,
 482         MFIE_TYPE_HOP_PARAMS = 8,
 483         MFIE_TYPE_HOP_TABLE = 9,
 484         MFIE_TYPE_REQUEST = 10,
 485         MFIE_TYPE_CHALLENGE = 16,
 486         MFIE_TYPE_POWER_CONSTRAINT = 32,
 487         MFIE_TYPE_POWER_CAPABILITY = 33,
 488         MFIE_TYPE_TPC_REQUEST = 34,
 489         MFIE_TYPE_TPC_REPORT = 35,
 490         MFIE_TYPE_SUPP_CHANNELS = 36,
 491         MFIE_TYPE_CSA = 37,
 492         MFIE_TYPE_MEASURE_REQUEST = 38,
 493         MFIE_TYPE_MEASURE_REPORT = 39,
 494         MFIE_TYPE_QUIET = 40,
 495         MFIE_TYPE_IBSS_DFS = 41,
 496         MFIE_TYPE_ERP_INFO = 42,
 497         MFIE_TYPE_RSN = 48,
 498         MFIE_TYPE_RATES_EX = 50,
 499         MFIE_TYPE_GENERIC = 221,
 500         MFIE_TYPE_QOS_PARAMETER = 222,
 501 };
 502
 503 /* Minimal header; can be used for passing 802.11 frames with sufficient
 504  * information to determine what type of underlying data type is actually
 505  * stored in the data. */
 506 struct ieee80211_hdr {
 507         __le16 frame_ctl;
 508         __le16 duration_id;
 509         u8 payload[0];
 510 } __attribute__ ((packed));
 511
 512 struct ieee80211_hdr_1addr {
 513         __le16 frame_ctl;
 514         __le16 duration_id;
 515         u8 addr1[ETH_ALEN];
 516         u8 payload[0];
 517 } __attribute__ ((packed));
 518
 519 struct ieee80211_hdr_2addr {
 520         __le16 frame_ctl;
 521         __le16 duration_id;
 522         u8 addr1[ETH_ALEN];
 523         u8 addr2[ETH_ALEN];
 524         u8 payload[0];
 525 } __attribute__ ((packed));
 526
 527 struct ieee80211_hdr_3addr {
 528         __le16 frame_ctl;
 529         __le16 duration_id;
 530         u8 addr1[ETH_ALEN];
 531         u8 addr2[ETH_ALEN];
 532         u8 addr3[ETH_ALEN];
 533         __le16 seq_ctl;
 534         u8 payload[0];
 535 } __attribute__ ((packed));
 536
 537 struct ieee80211_hdr_4addr {
 538         __le16 frame_ctl;
 539         __le16 duration_id;
 540         u8 addr1[ETH_ALEN];
 541         u8 addr2[ETH_ALEN];
 542         u8 addr3[ETH_ALEN];
 543         __le16 seq_ctl;
 544         u8 addr4[ETH_ALEN];
 545         u8 payload[0];
 546 } __attribute__ ((packed));
 547
 548 struct ieee80211_hdr_3addrqos {
 549         __le16 frame_ctl;
 550         __le16 duration_id;
 551         u8 addr1[ETH_ALEN];
 552         u8 addr2[ETH_ALEN];
 553         u8 addr3[ETH_ALEN];
 554         __le16 seq_ctl;
 555         u8 payload[0];
 556         __le16 qos_ctl;
 557 } __attribute__ ((packed));
 558
 559 struct ieee80211_hdr_4addrqos {
 560         __le16 frame_ctl;
 561         __le16 duration_id;
 562         u8 addr1[ETH_ALEN];
 563         u8 addr2[ETH_ALEN];
 564         u8 addr3[ETH_ALEN];
 565         __le16 seq_ctl;
 566         u8 addr4[ETH_ALEN];
 567         u8 payload[0];
 568         __le16 qos_ctl;
 569 } __attribute__ ((packed));
 570
 571 struct ieee80211_info_element {
 572         u8 id;
 573         u8 len;
 574         u8 data[0];
 575 } __attribute__ ((packed));
 576
 577 /*
 578  * These are the data types that can make up management packets
 579  *
 580         u16 auth_algorithm;
 581         u16 auth_sequence;
 582         u16 beacon_interval;
 583         u16 capability;
 584         u8 current_ap[ETH_ALEN];
 585         u16 listen_interval;
 586         struct {
 587                 u16 association_id:14, reserved:2;
 588         } __attribute__ ((packed));
 589         u32 time_stamp[2];
 590         u16 reason;
 591         u16 status;
 592 */
 593
 594 struct ieee80211_auth {
 595         struct ieee80211_hdr_3addr header;
 596         __le16 algorithm;
 597         __le16 transaction;
 598         __le16 status;
 599         struct ieee80211_info_element info_element[0];
 600 } __attribute__ ((packed));
 601
 602 struct ieee80211_disassoc {
 603         struct ieee80211_hdr_3addr header;
 604         __le16 reason_code;
 605         struct ieee80211_info_element info_element[0];
 606 } __attribute__ ((packed));
 607
 608 struct ieee80211_probe_request {
 609         struct ieee80211_hdr_3addr header;
 610         struct ieee80211_info_element info_element[0];
 611 } __attribute__ ((packed));
 612
 613 struct ieee80211_probe_response {
 614         struct ieee80211_hdr_3addr header;
 615         u32 time_stamp[2];
 616         __le16 beacon_interval;
 617         __le16 capability;
 618         struct ieee80211_info_element info_element[0];
 619 } __attribute__ ((packed));
 620
 621 /* Alias beacon for probe_response */
 622 #define ieee80211_beacon ieee80211_probe_response
 623
 624 struct ieee80211_assoc_request {
 625         struct ieee80211_hdr_3addr header;
 626         __le16 capability;
 627         __le16 listen_interval;
 628         struct ieee80211_info_element info_element[0];
 629 } __attribute__ ((packed));
 630
 631 struct ieee80211_reassoc_request {
 632         struct ieee80211_hdr_3addr header;
 633         __le16 capability;
 634         __le16 listen_interval;
 635         u8 current_ap[ETH_ALEN];
 636         struct ieee80211_info_element info_element[0];
 637 } __attribute__ ((packed));
 638
 639 struct ieee80211_assoc_response {
 640         struct ieee80211_hdr_3addr header;
 641         __le16 capability;
 642         __le16 status;
 643         __le16 aid;
 644         struct ieee80211_info_element info_element[0];  /* supported rates */
 645 } __attribute__ ((packed));
 646
 647 struct ieee80211_txb {
 648         u8 nr_frags;
 649         u8 encrypted;
 650         u8 rts_included;
 651         u8 reserved;
 652         __le16 frag_size;
 653         __le16 payload_size;
 654         struct sk_buff *fragments[0];
 655 };
 656
 657 /* SWEEP TABLE ENTRIES NUMBER */
 658 #define MAX_SWEEP_TAB_ENTRIES             42
 659 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 660 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 661  * only use 8, and then use extended rates for the remaining supported
 662  * rates.  Other APs, however, stick all of their supported rates on the
 663  * main rates information element... */
 664 #define MAX_RATES_LENGTH                  ((u8)12)
 665 #define MAX_RATES_EX_LENGTH               ((u8)16)
 666 #define MAX_NETWORK_COUNT                  128
 667
 668 #define CRC_LENGTH                 4U
 669
 670 #define MAX_WPA_IE_LEN 64
 671
 672 #define NETWORK_EMPTY_ESSID    (1<<0)
 673 #define NETWORK_HAS_OFDM       (1<<1)
 674 #define NETWORK_HAS_CCK        (1<<2)
 675
 676 /* QoS structure */
 677 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 678 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 679 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | NETWORK_HAS_QOS_INFORMATION)
 680
 681 #define QOS_QUEUE_NUM                   4
 682 #define QOS_OUI_LEN                     3
 683 #define QOS_OUI_TYPE                    2
 684 #define QOS_ELEMENT_ID                  221
 685 #define QOS_OUI_INFO_SUB_TYPE           0
 686 #define QOS_OUI_PARAM_SUB_TYPE          1
 687 #define QOS_VERSION_1                   1
 688 #define QOS_AIFSN_MIN_VALUE             2
 689
 690 struct ieee80211_qos_information_element {
 691         u8 elementID;
 692         u8 length;
 693         u8 qui[QOS_OUI_LEN];
 694         u8 qui_type;
 695         u8 qui_subtype;
 696         u8 version;
 697         u8 ac_info;
 698 } __attribute__ ((packed));
 699
 700 struct ieee80211_qos_ac_parameter {
 701         u8 aci_aifsn;
 702         u8 ecw_min_max;
 703         __le16 tx_op_limit;
 704 } __attribute__ ((packed));
 705
 706 struct ieee80211_qos_parameter_info {
 707         struct ieee80211_qos_information_element info_element;
 708         u8 reserved;
 709         struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 710 } __attribute__ ((packed));
 711
 712 struct ieee80211_qos_parameters {
 713         __le16 cw_min[QOS_QUEUE_NUM];
 714         __le16 cw_max[QOS_QUEUE_NUM];
 715         u8 aifs[QOS_QUEUE_NUM];
 716         u8 flag[QOS_QUEUE_NUM];
 717         __le16 tx_op_limit[QOS_QUEUE_NUM];
 718 } __attribute__ ((packed));
 719
 720 struct ieee80211_qos_data {
 721         struct ieee80211_qos_parameters parameters;
 722         int active;
 723         int supported;
 724         u8 param_count;
 725         u8 old_param_count;
 726 };
 727
 728 struct ieee80211_tim_parameters {
 729         u8 tim_count;
 730         u8 tim_period;
 731 } __attribute__ ((packed));
 732
 733 /*******************************************************/
 734
 735 struct ieee80211_network {
 736         /* These entries are used to identify a unique network */
 737         u8 bssid[ETH_ALEN];
 738         u8 channel;
 739         /* Ensure null-terminated for any debug msgs */
 740         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 741         u8 ssid_len;
 742
 743         struct ieee80211_qos_data qos_data;
 744
 745         /* These are network statistics */
 746         struct ieee80211_rx_stats stats;
 747         u16 capability;
 748         u8 rates[MAX_RATES_LENGTH];
 749         u8 rates_len;
 750         u8 rates_ex[MAX_RATES_EX_LENGTH];
 751         u8 rates_ex_len;
 752         unsigned long last_scanned;
 753         u8 mode;
 754         u8 flags;
 755         u32 last_associate;
 756         u32 time_stamp[2];
 757         u16 beacon_interval;
 758         u16 listen_interval;
 759         u16 atim_window;
 760         u8 erp_value;
 761         u8 wpa_ie[MAX_WPA_IE_LEN];
 762         size_t wpa_ie_len;
 763         u8 rsn_ie[MAX_WPA_IE_LEN];
 764         size_t rsn_ie_len;
 765         struct ieee80211_tim_parameters tim;
 766         struct list_head list;
 767 };
 768
 769 enum ieee80211_state {
 770         IEEE80211_UNINITIALIZED = 0,
 771         IEEE80211_INITIALIZED,
 772         IEEE80211_ASSOCIATING,
 773         IEEE80211_ASSOCIATED,
 774         IEEE80211_AUTHENTICATING,
 775         IEEE80211_AUTHENTICATED,
 776         IEEE80211_SHUTDOWN
 777 };
 778
 779 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 780 #define DEFAULT_FTS 2346
 781
 782 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 783 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 784 #define CFG_IEEE80211_RTS (1<<2)
 785
 786 #define IEEE80211_24GHZ_MIN_CHANNEL 1
 787 #define IEEE80211_24GHZ_MAX_CHANNEL 14
 788 #define IEEE80211_24GHZ_CHANNELS    14
 789
 790 #define IEEE80211_52GHZ_MIN_CHANNEL 36
 791 #define IEEE80211_52GHZ_MAX_CHANNEL 165
 792 #define IEEE80211_52GHZ_CHANNELS    32
 793
 794 enum {
 795         IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
 796         IEEE80211_CH_B_ONLY = (1 << 2),
 797         IEEE80211_CH_NO_IBSS = (1 << 3),
 798         IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
 799         IEEE80211_CH_RADAR_DETECT = (1 << 5),
 800         IEEE80211_CH_INVALID = (1 << 6),
 801 };
 802
 803 struct ieee80211_channel {
 804         u16 freq;
 805         u8 channel;
 806         u8 flags;
 807         u8 max_power;
 808 };
 809
 810 struct ieee80211_geo {
 811         u8 name[4];
 812         u8 bg_channels;
 813         u8 a_channels;
 814         struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
 815         struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
 816 };
 817
 818 struct ieee80211_device {
 819         struct net_device *dev;
 820         struct ieee80211_security sec;
 821
 822         /* Bookkeeping structures */
 823         struct net_device_stats stats;
 824         struct ieee80211_stats ieee_stats;
 825
 826         struct ieee80211_geo geo;
 827
 828         /* Probe / Beacon management */
 829         struct list_head network_free_list;
 830         struct list_head network_list;
 831         struct ieee80211_network *networks;
 832         int scans;
 833         int scan_age;
 834
 835         int iw_mode;            /* operating mode (IW_MODE_*) */
 836         struct iw_spy_data spy_data;    /* iwspy support */
 837
 838         spinlock_t lock;
 839
 840         int tx_headroom;        /* Set to size of any additional room needed at front
 841                                  * of allocated Tx SKBs */
 842         u32 config;
 843
 844         /* WEP and other encryption related settings at the device level */
 845         int open_wep;           /* Set to 1 to allow unencrypted frames */
 846
 847         int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
 848                                  * WEP key changes */
 849
 850         /* If the host performs {en,de}cryption, then set to 1 */
 851         int host_encrypt;
 852         int host_encrypt_msdu;
 853         int host_decrypt;
 854         int host_open_frag;
 855         int ieee802_1x;         /* is IEEE 802.1X used */
 856
 857         /* WPA data */
 858         int wpa_enabled;
 859         int drop_unencrypted;
 860         int tkip_countermeasures;
 861         int privacy_invoked;
 862         size_t wpa_ie_len;
 863         u8 *wpa_ie;
 864
 865         struct list_head crypt_deinit_list;
 866         struct ieee80211_crypt_data *crypt[WEP_KEYS];
 867         int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
 868         struct timer_list crypt_deinit_timer;
 869         int crypt_quiesced;
 870
 871         int bcrx_sta_key;       /* use individual keys to override default keys even
 872                                  * with RX of broad/multicast frames */
 873
 874         /* Fragmentation structures */
 875         struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
 876         unsigned int frag_next_idx;
 877         u16 fts;                /* Fragmentation Threshold */
 878         u16 rts;                /* RTS threshold */
 879
 880         /* Association info */
 881         u8 bssid[ETH_ALEN];
 882
 883         enum ieee80211_state state;
 884
 885         int mode;               /* A, B, G */
 886         int modulation;         /* CCK, OFDM */
 887         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
 888         int abg_true;           /* ABG flag              */
 889
 890         int perfect_rssi;
 891         int worst_rssi;
 892
 893         /* Callback functions */
 894         void (*set_security) (struct net_device * dev,
 895                               struct ieee80211_security * sec);
 896         int (*hard_start_xmit) (struct ieee80211_txb * txb,
 897                                 struct net_device * dev, int pri);
 898         int (*reset_port) (struct net_device * dev);
 899         int (*is_queue_full) (struct net_device * dev, int pri);
 900
 901         int (*handle_management) (struct net_device * dev,
 902                                   struct ieee80211_network * network, u16 type);
 903
 904         /* Typical STA methods */
 905         int (*handle_auth) (struct net_device * dev,
 906                             struct ieee80211_auth * auth);
 907         int (*handle_disassoc) (struct net_device * dev,
 908                                 struct ieee80211_disassoc * assoc);
 909         int (*handle_beacon) (struct net_device * dev,
 910                               struct ieee80211_beacon * beacon,
 911                               struct ieee80211_network * network);
 912         int (*handle_probe_response) (struct net_device * dev,
 913                                       struct ieee80211_probe_response * resp,
 914                                       struct ieee80211_network * network);
 915         int (*handle_probe_request) (struct net_device * dev,
 916                                      struct ieee80211_probe_request * req,
 917                                      struct ieee80211_rx_stats * stats);
 918         int (*handle_assoc_response) (struct net_device * dev,
 919                                       struct ieee80211_assoc_response * resp,
 920                                       struct ieee80211_network * network);
 921
 922         /* Typical AP methods */
 923         int (*handle_assoc_request) (struct net_device * dev);
 924         int (*handle_reassoc_request) (struct net_device * dev,
 925                                        struct ieee80211_reassoc_request * req);
 926
 927         /* This must be the last item so that it points to the data
 928          * allocated beyond this structure by alloc_ieee80211 */
 929         u8 priv[0];
 930 };
 931
 932 #define IEEE_A            (1<<0)
 933 #define IEEE_B            (1<<1)
 934 #define IEEE_G            (1<<2)
 935 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
 936
 937 static inline void *ieee80211_priv(struct net_device *dev)
 938 {
 939         return ((struct ieee80211_device *)netdev_priv(dev))->priv;
 940 }
 941
 942 static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
 943 {
 944         /* Single white space is for Linksys APs */
 945         if (essid_len == 1 && essid[0] == ' ')
 946                 return 1;
 947
 948         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 949         while (essid_len) {
 950                 essid_len--;
 951                 if (essid[essid_len] != '\0')
 952                         return 0;
 953         }
 954
 955         return 1;
 956 }
 957
 958 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
 959                                           int mode)
 960 {
 961         /*
 962          * It is possible for both access points and our device to support
 963          * combinations of modes, so as long as there is one valid combination
 964          * of ap/device supported modes, then return success
 965          *
 966          */
 967         if ((mode & IEEE_A) &&
 968             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
 969             (ieee->freq_band & IEEE80211_52GHZ_BAND))
 970                 return 1;
 971
 972         if ((mode & IEEE_G) &&
 973             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
 974             (ieee->freq_band & IEEE80211_24GHZ_BAND))
 975                 return 1;
 976
 977         if ((mode & IEEE_B) &&
 978             (ieee->modulation & IEEE80211_CCK_MODULATION) &&
 979             (ieee->freq_band & IEEE80211_24GHZ_BAND))
 980                 return 1;
 981
 982         return 0;
 983 }
 984
 985 static inline int ieee80211_get_hdrlen(u16 fc)
 986 {
 987         int hdrlen = IEEE80211_3ADDR_LEN;
 988         u16 stype = WLAN_FC_GET_STYPE(fc);
 989
 990         switch (WLAN_FC_GET_TYPE(fc)) {
 991         case IEEE80211_FTYPE_DATA:
 992                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
 993                         hdrlen = IEEE80211_4ADDR_LEN;
 994                 if (stype & IEEE80211_STYPE_QOS_DATA)
 995                         hdrlen += 2;
 996                 break;
 997         case IEEE80211_FTYPE_CTL:
 998                 switch (WLAN_FC_GET_STYPE(fc)) {
 999                 case IEEE80211_STYPE_CTS:
1000                 case IEEE80211_STYPE_ACK:
1001                         hdrlen = IEEE80211_1ADDR_LEN;
1002                         break;
1003                 default:
1004                         hdrlen = IEEE80211_2ADDR_LEN;
1005                         break;
1006                 }
1007                 break;
1008         }
1009
1010         return hdrlen;
1011 }
1012
1013 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1014 {
1015         switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1016         case IEEE80211_1ADDR_LEN:
1017                 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1018         case IEEE80211_2ADDR_LEN:
1019                 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1020         case IEEE80211_3ADDR_LEN:
1021                 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1022         case IEEE80211_4ADDR_LEN:
1023                 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1024         }
1025
1026 }
1027
1028 /* ieee80211.c */
1029 extern void free_ieee80211(struct net_device *dev);
1030 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1031
1032 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1033
1034 /* ieee80211_tx.c */
1035 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1036 extern void ieee80211_txb_free(struct ieee80211_txb *);
1037 extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1038                               struct ieee80211_hdr *frame, int len);
1039
1040 /* ieee80211_rx.c */
1041 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1042                         struct ieee80211_rx_stats *rx_stats);
1043 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1044                              struct ieee80211_hdr_4addr *header,
1045                              struct ieee80211_rx_stats *stats);
1046
1047 /* ieee80211_geo.c */
1048 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1049                                                      *ieee);
1050 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1051                              const struct ieee80211_geo *geo);
1052
1053 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1054                                       u8 channel);
1055 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1056                                       u8 channel);
1057 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1058
1059 /* ieee80211_wx.c */
1060 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1061                                  struct iw_request_info *info,
1062                                  union iwreq_data *wrqu, char *key);
1063 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1064                                    struct iw_request_info *info,
1065                                    union iwreq_data *wrqu, char *key);
1066 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1067                                    struct iw_request_info *info,
1068                                    union iwreq_data *wrqu, char *key);
1069 #if WIRELESS_EXT > 17
1070 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1071                                       struct iw_request_info *info,
1072                                       union iwreq_data *wrqu, char *extra);
1073 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1074                                       struct iw_request_info *info,
1075                                       union iwreq_data *wrqu, char *extra);
1076 #endif
1077
1078 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1079 {
1080         ieee->scans++;
1081 }
1082
1083 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1084 {
1085         return ieee->scans;
1086 }
1087
1088 #endif                          /* IEEE80211_H */