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) 2004-2005, 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  * API Version History
  22  * 1.0.x -- Initial version
  23  * 1.1.x -- Added radiotap, QoS, TIM, ieee80211_geo APIs,
  24  *          various structure changes, and crypto API init method
  25  */
  26 #ifndef IEEE80211_H
  27 #define IEEE80211_H
  28 #include <linux/if_ether.h>     /* ETH_ALEN */
  29 #include <linux/kernel.h>       /* ARRAY_SIZE */
  30 #include <linux/wireless.h>
  31
  32 #define IEEE80211_VERSION "git-1.1.7"
  33
  34 #define IEEE80211_DATA_LEN              2304
  35 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
  36    6.2.1.1.2.
  37
  38    The figure in section 7.1.2 suggests a body size of up to 2312
  39    bytes is allowed, which is a bit confusing, I suspect this
  40    represents the 2304 bytes of real data, plus a possible 8 bytes of
  41    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
  42
  43 #define IEEE80211_1ADDR_LEN 10
  44 #define IEEE80211_2ADDR_LEN 16
  45 #define IEEE80211_3ADDR_LEN 24
  46 #define IEEE80211_4ADDR_LEN 30
  47 #define IEEE80211_FCS_LEN    4
  48 #define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
  49 #define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
  50
  51 #define MIN_FRAG_THRESHOLD     256U
  52 #define MAX_FRAG_THRESHOLD     2346U
  53
  54 /* Frame control field constants */
  55 #define IEEE80211_FCTL_VERS             0x0003
  56 #define IEEE80211_FCTL_FTYPE            0x000c
  57 #define IEEE80211_FCTL_STYPE            0x00f0
  58 #define IEEE80211_FCTL_TODS             0x0100
  59 #define IEEE80211_FCTL_FROMDS           0x0200
  60 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  61 #define IEEE80211_FCTL_RETRY            0x0800
  62 #define IEEE80211_FCTL_PM               0x1000
  63 #define IEEE80211_FCTL_MOREDATA         0x2000
  64 #define IEEE80211_FCTL_PROTECTED        0x4000
  65 #define IEEE80211_FCTL_ORDER            0x8000
  66
  67 #define IEEE80211_FTYPE_MGMT            0x0000
  68 #define IEEE80211_FTYPE_CTL             0x0004
  69 #define IEEE80211_FTYPE_DATA            0x0008
  70
  71 /* management */
  72 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  73 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  74 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  75 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  76 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  77 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  78 #define IEEE80211_STYPE_BEACON          0x0080
  79 #define IEEE80211_STYPE_ATIM            0x0090
  80 #define IEEE80211_STYPE_DISASSOC        0x00A0
  81 #define IEEE80211_STYPE_AUTH            0x00B0
  82 #define IEEE80211_STYPE_DEAUTH          0x00C0
  83 #define IEEE80211_STYPE_ACTION          0x00D0
  84
  85 /* control */
  86 #define IEEE80211_STYPE_PSPOLL          0x00A0
  87 #define IEEE80211_STYPE_RTS             0x00B0
  88 #define IEEE80211_STYPE_CTS             0x00C0
  89 #define IEEE80211_STYPE_ACK             0x00D0
  90 #define IEEE80211_STYPE_CFEND           0x00E0
  91 #define IEEE80211_STYPE_CFENDACK        0x00F0
  92
  93 /* data */
  94 #define IEEE80211_STYPE_DATA            0x0000
  95 #define IEEE80211_STYPE_DATA_CFACK      0x0010
  96 #define IEEE80211_STYPE_DATA_CFPOLL     0x0020
  97 #define IEEE80211_STYPE_DATA_CFACKPOLL  0x0030
  98 #define IEEE80211_STYPE_NULLFUNC        0x0040
  99 #define IEEE80211_STYPE_CFACK           0x0050
 100 #define IEEE80211_STYPE_CFPOLL          0x0060
 101 #define IEEE80211_STYPE_CFACKPOLL       0x0070
 102 #define IEEE80211_STYPE_QOS_DATA        0x0080
 103
 104 #define IEEE80211_SCTL_FRAG             0x000F
 105 #define IEEE80211_SCTL_SEQ              0xFFF0
 106
 107 /* debug macros */
 108
 109 #ifdef CONFIG_IEEE80211_DEBUG
 110 extern u32 ieee80211_debug_level;
 111 #define IEEE80211_DEBUG(level, fmt, args...) \
 112 do { if (ieee80211_debug_level & (level)) \
 113   printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
 114          in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
 115 #else
 116 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
 117 #endif                          /* CONFIG_IEEE80211_DEBUG */
 118
 119 /* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
 120
 121 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
 122 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
 123
 124 /* escape_essid() is intended to be used in debug (and possibly error)
 125  * messages. It should never be used for passing essid to user space. */
 126 const char *escape_essid(const char *essid, u8 essid_len);
 127
 128 /*
 129  * To use the debug system:
 130  *
 131  * If you are defining a new debug classification, simply add it to the #define
 132  * list here in the form of:
 133  *
 134  * #define IEEE80211_DL_xxxx VALUE
 135  *
 136  * shifting value to the left one bit from the previous entry.  xxxx should be
 137  * the name of the classification (for example, WEP)
 138  *
 139  * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
 140  * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
 141  * to send output to that classification.
 142  *
 143  * To add your debug level to the list of levels seen when you perform
 144  *
 145  * % cat /proc/net/ieee80211/debug_level
 146  *
 147  * you simply need to add your entry to the ieee80211_debug_level array.
 148  *
 149  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
 150  * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
 151  *
 152  */
 153
 154 #define IEEE80211_DL_INFO          (1<<0)
 155 #define IEEE80211_DL_WX            (1<<1)
 156 #define IEEE80211_DL_SCAN          (1<<2)
 157 #define IEEE80211_DL_STATE         (1<<3)
 158 #define IEEE80211_DL_MGMT          (1<<4)
 159 #define IEEE80211_DL_FRAG          (1<<5)
 160 #define IEEE80211_DL_DROP          (1<<7)
 161
 162 #define IEEE80211_DL_TX            (1<<8)
 163 #define IEEE80211_DL_RX            (1<<9)
 164 #define IEEE80211_DL_QOS           (1<<31)
 165
 166 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 167 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
 168 #define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
 169
 170 #define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
 171 #define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
 172 #define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
 173 #define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
 174 #define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
 175 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 176 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 177 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
 178 #define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 179 #include <linux/netdevice.h>
 180 #include <linux/wireless.h>
 181 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 182
 183 #ifndef WIRELESS_SPY
 184 #define WIRELESS_SPY            /* enable iwspy support */
 185 #endif
 186 #include <net/iw_handler.h>     /* new driver API */
 187
 188 #ifndef ETH_P_PAE
 189 #define ETH_P_PAE 0x888E        /* Port Access Entity (IEEE 802.1X) */
 190 #endif                          /* ETH_P_PAE */
 191
 192 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 193
 194 #ifndef ETH_P_80211_RAW
 195 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 196 #endif
 197
 198 /* IEEE 802.11 defines */
 199
 200 #define P80211_OUI_LEN 3
 201
 202 struct ieee80211_snap_hdr {
 203
 204         u8 dsap;                /* always 0xAA */
 205         u8 ssap;                /* always 0xAA */
 206         u8 ctrl;                /* always 0x03 */
 207         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 208
 209 } __attribute__ ((packed));
 210
 211 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
 212
 213 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 214 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 215 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 216
 217 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 218 #define WLAN_GET_SEQ_SEQ(seq)  ((seq) & IEEE80211_SCTL_SEQ)
 219
 220 /* Authentication algorithms */
 221 #define WLAN_AUTH_OPEN 0
 222 #define WLAN_AUTH_SHARED_KEY 1
 223 #define WLAN_AUTH_LEAP 2
 224
 225 #define WLAN_AUTH_CHALLENGE_LEN 128
 226
 227 #define WLAN_CAPABILITY_ESS (1<<0)
 228 #define WLAN_CAPABILITY_IBSS (1<<1)
 229 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
 230 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 231 #define WLAN_CAPABILITY_PRIVACY (1<<4)
 232 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
 233 #define WLAN_CAPABILITY_PBCC (1<<6)
 234 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 235 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
 236 #define WLAN_CAPABILITY_QOS (1<<9)
 237 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 238 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
 239
 240 /* Status codes */
 241 enum ieee80211_statuscode {
 242         WLAN_STATUS_SUCCESS = 0,
 243         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 244         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 245         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 246         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 247         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 248         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 249         WLAN_STATUS_CHALLENGE_FAIL = 15,
 250         WLAN_STATUS_AUTH_TIMEOUT = 16,
 251         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 252         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 253         /* 802.11b */
 254         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 255         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 256         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 257         /* 802.11h */
 258         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 259         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 260         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 261         /* 802.11g */
 262         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 263         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 264         /* 802.11i */
 265         WLAN_STATUS_INVALID_IE = 40,
 266         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 267         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 268         WLAN_STATUS_INVALID_AKMP = 43,
 269         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 270         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 271         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 272 };
 273
 274 /* Reason codes */
 275 enum ieee80211_reasoncode {
 276         WLAN_REASON_UNSPECIFIED = 1,
 277         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 278         WLAN_REASON_DEAUTH_LEAVING = 3,
 279         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 280         WLAN_REASON_DISASSOC_AP_BUSY = 5,
 281         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 282         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 283         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 284         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 285         /* 802.11h */
 286         WLAN_REASON_DISASSOC_BAD_POWER = 10,
 287         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 288         /* 802.11i */
 289         WLAN_REASON_INVALID_IE = 13,
 290         WLAN_REASON_MIC_FAILURE = 14,
 291         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 292         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 293         WLAN_REASON_IE_DIFFERENT = 17,
 294         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 295         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 296         WLAN_REASON_INVALID_AKMP = 20,
 297         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 298         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 299         WLAN_REASON_IEEE8021X_FAILED = 23,
 300         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 301 };
 302
 303 /* Action categories - 802.11h */
 304 enum ieee80211_actioncategories {
 305         WLAN_ACTION_SPECTRUM_MGMT = 0,
 306         /* Reserved 1-127  */
 307         /* Error    128-255 */
 308 };
 309
 310 /* Action details - 802.11h */
 311 enum ieee80211_actiondetails {
 312         WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
 313         WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
 314         WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
 315         WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
 316         WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
 317         /* 5 - 255 Reserved */
 318 };
 319
 320 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 321 #define IEEE80211_STATMASK_RSSI (1<<1)
 322 #define IEEE80211_STATMASK_NOISE (1<<2)
 323 #define IEEE80211_STATMASK_RATE (1<<3)
 324 #define IEEE80211_STATMASK_WEMASK 0x7
 325
 326 #define IEEE80211_CCK_MODULATION    (1<<0)
 327 #define IEEE80211_OFDM_MODULATION   (1<<1)
 328
 329 #define IEEE80211_24GHZ_BAND     (1<<0)
 330 #define IEEE80211_52GHZ_BAND     (1<<1)
 331
 332 #define IEEE80211_CCK_RATE_1MB                  0x02
 333 #define IEEE80211_CCK_RATE_2MB                  0x04
 334 #define IEEE80211_CCK_RATE_5MB                  0x0B
 335 #define IEEE80211_CCK_RATE_11MB                 0x16
 336 #define IEEE80211_OFDM_RATE_6MB                 0x0C
 337 #define IEEE80211_OFDM_RATE_9MB                 0x12
 338 #define IEEE80211_OFDM_RATE_12MB                0x18
 339 #define IEEE80211_OFDM_RATE_18MB                0x24
 340 #define IEEE80211_OFDM_RATE_24MB                0x30
 341 #define IEEE80211_OFDM_RATE_36MB                0x48
 342 #define IEEE80211_OFDM_RATE_48MB                0x60
 343 #define IEEE80211_OFDM_RATE_54MB                0x6C
 344 #define IEEE80211_BASIC_RATE_MASK               0x80
 345
 346 #define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
 347 #define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
 348 #define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
 349 #define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
 350 #define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
 351 #define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
 352 #define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
 353 #define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
 354 #define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
 355 #define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
 356 #define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
 357 #define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)
 358
 359 #define IEEE80211_CCK_RATES_MASK                0x0000000F
 360 #define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
 361         IEEE80211_CCK_RATE_2MB_MASK)
 362 #define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
 363         IEEE80211_CCK_RATE_5MB_MASK | \
 364         IEEE80211_CCK_RATE_11MB_MASK)
 365
 366 #define IEEE80211_OFDM_RATES_MASK               0x00000FF0
 367 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
 368         IEEE80211_OFDM_RATE_12MB_MASK | \
 369         IEEE80211_OFDM_RATE_24MB_MASK)
 370 #define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
 371         IEEE80211_OFDM_RATE_9MB_MASK  | \
 372         IEEE80211_OFDM_RATE_18MB_MASK | \
 373         IEEE80211_OFDM_RATE_36MB_MASK | \
 374         IEEE80211_OFDM_RATE_48MB_MASK | \
 375         IEEE80211_OFDM_RATE_54MB_MASK)
 376 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
 377                                 IEEE80211_CCK_DEFAULT_RATES_MASK)
 378
 379 #define IEEE80211_NUM_OFDM_RATES            8
 380 #define IEEE80211_NUM_CCK_RATES             4
 381 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 382
 383 /* NOTE: This data is for statistical purposes; not all hardware provides this
 384  *       information for frames received.
 385  *       For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
 386  */
 387 struct ieee80211_rx_stats {
 388         u32 mac_time;
 389         s8 rssi;
 390         u8 signal;
 391         u8 noise;
 392         u16 rate;               /* in 100 kbps */
 393         u8 received_channel;
 394         u8 control;
 395         u8 mask;
 396         u8 freq;
 397         u16 len;
 398         u64 tsf;
 399         u32 beacon_time;
 400 };
 401
 402 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 403  * three fragmented frames. This define can be increased to support more
 404  * concurrent frames, but it should be noted that each entry can consume about
 405  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 406 #define IEEE80211_FRAG_CACHE_LEN 4
 407
 408 struct ieee80211_frag_entry {
 409         unsigned long first_frag_time;
 410         unsigned int seq;
 411         unsigned int last_frag;
 412         struct sk_buff *skb;
 413         u8 src_addr[ETH_ALEN];
 414         u8 dst_addr[ETH_ALEN];
 415 };
 416
 417 struct ieee80211_stats {
 418         unsigned int tx_unicast_frames;
 419         unsigned int tx_multicast_frames;
 420         unsigned int tx_fragments;
 421         unsigned int tx_unicast_octets;
 422         unsigned int tx_multicast_octets;
 423         unsigned int tx_deferred_transmissions;
 424         unsigned int tx_single_retry_frames;
 425         unsigned int tx_multiple_retry_frames;
 426         unsigned int tx_retry_limit_exceeded;
 427         unsigned int tx_discards;
 428         unsigned int rx_unicast_frames;
 429         unsigned int rx_multicast_frames;
 430         unsigned int rx_fragments;
 431         unsigned int rx_unicast_octets;
 432         unsigned int rx_multicast_octets;
 433         unsigned int rx_fcs_errors;
 434         unsigned int rx_discards_no_buffer;
 435         unsigned int tx_discards_wrong_sa;
 436         unsigned int rx_discards_undecryptable;
 437         unsigned int rx_message_in_msg_fragments;
 438         unsigned int rx_message_in_bad_msg_fragments;
 439 };
 440
 441 struct ieee80211_device;
 442
 443 #include "ieee80211_crypt.h"
 444
 445 #define SEC_KEY_1               (1<<0)
 446 #define SEC_KEY_2               (1<<1)
 447 #define SEC_KEY_3               (1<<2)
 448 #define SEC_KEY_4               (1<<3)
 449 #define SEC_ACTIVE_KEY          (1<<4)
 450 #define SEC_AUTH_MODE           (1<<5)
 451 #define SEC_UNICAST_GROUP       (1<<6)
 452 #define SEC_LEVEL               (1<<7)
 453 #define SEC_ENABLED             (1<<8)
 454 #define SEC_ENCRYPT             (1<<9)
 455
 456 #define SEC_LEVEL_0             0       /* None */
 457 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 458 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 459 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 460 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 461
 462 #define SEC_ALG_NONE            0
 463 #define SEC_ALG_WEP             1
 464 #define SEC_ALG_TKIP            2
 465 #define SEC_ALG_CCMP            3
 466
 467 #define WEP_KEYS                4
 468 #define WEP_KEY_LEN             13
 469 #define SCM_KEY_LEN             32
 470 #define SCM_TEMPORAL_KEY_LENGTH 16
 471
 472 struct ieee80211_security {
 473         u16 active_key:2,
 474             enabled:1,
 475             auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
 476         u8 encode_alg[WEP_KEYS];
 477         u8 key_sizes[WEP_KEYS];
 478         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 479         u8 level;
 480         u16 flags;
 481 } __attribute__ ((packed));
 482
 483 /*
 484
 485  802.11 data frame from AP
 486
 487       ,-------------------------------------------------------------------.
 488 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 489       |------|------|---------|---------|---------|------|---------|------|
 490 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 491       |      | tion | (BSSID) |         |         | ence |  data   |      |
 492       `-------------------------------------------------------------------'
 493
 494 Total: 28-2340 bytes
 495
 496 */
 497
 498 #define BEACON_PROBE_SSID_ID_POSITION 12
 499
 500 /* Management Frame Information Element Types */
 501 enum ieee80211_mfie {
 502         MFIE_TYPE_SSID = 0,
 503         MFIE_TYPE_RATES = 1,
 504         MFIE_TYPE_FH_SET = 2,
 505         MFIE_TYPE_DS_SET = 3,
 506         MFIE_TYPE_CF_SET = 4,
 507         MFIE_TYPE_TIM = 5,
 508         MFIE_TYPE_IBSS_SET = 6,
 509         MFIE_TYPE_COUNTRY = 7,
 510         MFIE_TYPE_HOP_PARAMS = 8,
 511         MFIE_TYPE_HOP_TABLE = 9,
 512         MFIE_TYPE_REQUEST = 10,
 513         MFIE_TYPE_CHALLENGE = 16,
 514         MFIE_TYPE_POWER_CONSTRAINT = 32,
 515         MFIE_TYPE_POWER_CAPABILITY = 33,
 516         MFIE_TYPE_TPC_REQUEST = 34,
 517         MFIE_TYPE_TPC_REPORT = 35,
 518         MFIE_TYPE_SUPP_CHANNELS = 36,
 519         MFIE_TYPE_CSA = 37,
 520         MFIE_TYPE_MEASURE_REQUEST = 38,
 521         MFIE_TYPE_MEASURE_REPORT = 39,
 522         MFIE_TYPE_QUIET = 40,
 523         MFIE_TYPE_IBSS_DFS = 41,
 524         MFIE_TYPE_ERP_INFO = 42,
 525         MFIE_TYPE_RSN = 48,
 526         MFIE_TYPE_RATES_EX = 50,
 527         MFIE_TYPE_GENERIC = 221,
 528         MFIE_TYPE_QOS_PARAMETER = 222,
 529 };
 530
 531 /* Minimal header; can be used for passing 802.11 frames with sufficient
 532  * information to determine what type of underlying data type is actually
 533  * stored in the data. */
 534 struct ieee80211_hdr {
 535         __le16 frame_ctl;
 536         __le16 duration_id;
 537         u8 payload[0];
 538 } __attribute__ ((packed));
 539
 540 struct ieee80211_hdr_1addr {
 541         __le16 frame_ctl;
 542         __le16 duration_id;
 543         u8 addr1[ETH_ALEN];
 544         u8 payload[0];
 545 } __attribute__ ((packed));
 546
 547 struct ieee80211_hdr_2addr {
 548         __le16 frame_ctl;
 549         __le16 duration_id;
 550         u8 addr1[ETH_ALEN];
 551         u8 addr2[ETH_ALEN];
 552         u8 payload[0];
 553 } __attribute__ ((packed));
 554
 555 struct ieee80211_hdr_3addr {
 556         __le16 frame_ctl;
 557         __le16 duration_id;
 558         u8 addr1[ETH_ALEN];
 559         u8 addr2[ETH_ALEN];
 560         u8 addr3[ETH_ALEN];
 561         __le16 seq_ctl;
 562         u8 payload[0];
 563 } __attribute__ ((packed));
 564
 565 struct ieee80211_hdr_4addr {
 566         __le16 frame_ctl;
 567         __le16 duration_id;
 568         u8 addr1[ETH_ALEN];
 569         u8 addr2[ETH_ALEN];
 570         u8 addr3[ETH_ALEN];
 571         __le16 seq_ctl;
 572         u8 addr4[ETH_ALEN];
 573         u8 payload[0];
 574 } __attribute__ ((packed));
 575
 576 struct ieee80211_hdr_3addrqos {
 577         __le16 frame_ctl;
 578         __le16 duration_id;
 579         u8 addr1[ETH_ALEN];
 580         u8 addr2[ETH_ALEN];
 581         u8 addr3[ETH_ALEN];
 582         __le16 seq_ctl;
 583         u8 payload[0];
 584         __le16 qos_ctl;
 585 } __attribute__ ((packed));
 586
 587 struct ieee80211_hdr_4addrqos {
 588         __le16 frame_ctl;
 589         __le16 duration_id;
 590         u8 addr1[ETH_ALEN];
 591         u8 addr2[ETH_ALEN];
 592         u8 addr3[ETH_ALEN];
 593         __le16 seq_ctl;
 594         u8 addr4[ETH_ALEN];
 595         u8 payload[0];
 596         __le16 qos_ctl;
 597 } __attribute__ ((packed));
 598
 599 struct ieee80211_info_element {
 600         u8 id;
 601         u8 len;
 602         u8 data[0];
 603 } __attribute__ ((packed));
 604
 605 /*
 606  * These are the data types that can make up management packets
 607  *
 608         u16 auth_algorithm;
 609         u16 auth_sequence;
 610         u16 beacon_interval;
 611         u16 capability;
 612         u8 current_ap[ETH_ALEN];
 613         u16 listen_interval;
 614         struct {
 615                 u16 association_id:14, reserved:2;
 616         } __attribute__ ((packed));
 617         u32 time_stamp[2];
 618         u16 reason;
 619         u16 status;
 620 */
 621
 622 struct ieee80211_auth {
 623         struct ieee80211_hdr_3addr header;
 624         __le16 algorithm;
 625         __le16 transaction;
 626         __le16 status;
 627         /* challenge */
 628         struct ieee80211_info_element info_element[0];
 629 } __attribute__ ((packed));
 630
 631 struct ieee80211_channel_switch {
 632         u8 id;
 633         u8 len;
 634         u8 mode;
 635         u8 channel;
 636         u8 count;
 637 } __attribute__ ((packed));
 638
 639 struct ieee80211_action {
 640         struct ieee80211_hdr_3addr header;
 641         u8 category;
 642         u8 action;
 643         union {
 644                 struct ieee80211_action_exchange {
 645                         u8 token;
 646                         struct ieee80211_info_element info_element[0];
 647                 } exchange;
 648                 struct ieee80211_channel_switch channel_switch;
 649
 650         } format;
 651 } __attribute__ ((packed));
 652
 653 struct ieee80211_disassoc {
 654         struct ieee80211_hdr_3addr header;
 655         __le16 reason;
 656 } __attribute__ ((packed));
 657
 658 /* Alias deauth for disassoc */
 659 #define ieee80211_deauth ieee80211_disassoc
 660
 661 struct ieee80211_probe_request {
 662         struct ieee80211_hdr_3addr header;
 663         /* SSID, supported rates */
 664         struct ieee80211_info_element info_element[0];
 665 } __attribute__ ((packed));
 666
 667 struct ieee80211_probe_response {
 668         struct ieee80211_hdr_3addr header;
 669         u32 time_stamp[2];
 670         __le16 beacon_interval;
 671         __le16 capability;
 672         /* SSID, supported rates, FH params, DS params,
 673          * CF params, IBSS params, TIM (if beacon), RSN */
 674         struct ieee80211_info_element info_element[0];
 675 } __attribute__ ((packed));
 676
 677 /* Alias beacon for probe_response */
 678 #define ieee80211_beacon ieee80211_probe_response
 679
 680 struct ieee80211_assoc_request {
 681         struct ieee80211_hdr_3addr header;
 682         __le16 capability;
 683         __le16 listen_interval;
 684         /* SSID, supported rates, RSN */
 685         struct ieee80211_info_element info_element[0];
 686 } __attribute__ ((packed));
 687
 688 struct ieee80211_reassoc_request {
 689         struct ieee80211_hdr_3addr header;
 690         __le16 capability;
 691         __le16 listen_interval;
 692         u8 current_ap[ETH_ALEN];
 693         struct ieee80211_info_element info_element[0];
 694 } __attribute__ ((packed));
 695
 696 struct ieee80211_assoc_response {
 697         struct ieee80211_hdr_3addr header;
 698         __le16 capability;
 699         __le16 status;
 700         __le16 aid;
 701         /* supported rates */
 702         struct ieee80211_info_element info_element[0];
 703 } __attribute__ ((packed));
 704
 705 struct ieee80211_txb {
 706         u8 nr_frags;
 707         u8 encrypted;
 708         u8 rts_included;
 709         u8 reserved;
 710         __le16 frag_size;
 711         __le16 payload_size;
 712         struct sk_buff *fragments[0];
 713 };
 714
 715 /* SWEEP TABLE ENTRIES NUMBER */
 716 #define MAX_SWEEP_TAB_ENTRIES             42
 717 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 718 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 719  * only use 8, and then use extended rates for the remaining supported
 720  * rates.  Other APs, however, stick all of their supported rates on the
 721  * main rates information element... */
 722 #define MAX_RATES_LENGTH                  ((u8)12)
 723 #define MAX_RATES_EX_LENGTH               ((u8)16)
 724 #define MAX_NETWORK_COUNT                  128
 725
 726 #define CRC_LENGTH                 4U
 727
 728 #define MAX_WPA_IE_LEN 64
 729
 730 #define NETWORK_EMPTY_ESSID    (1<<0)
 731 #define NETWORK_HAS_OFDM       (1<<1)
 732 #define NETWORK_HAS_CCK        (1<<2)
 733
 734 /* QoS structure */
 735 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 736 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 737 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
 738                                          NETWORK_HAS_QOS_INFORMATION)
 739
 740 /* 802.11h */
 741 #define NETWORK_HAS_POWER_CONSTRAINT    (1<<5)
 742 #define NETWORK_HAS_CSA                 (1<<6)
 743 #define NETWORK_HAS_QUIET               (1<<7)
 744 #define NETWORK_HAS_IBSS_DFS            (1<<8)
 745 #define NETWORK_HAS_TPC_REPORT          (1<<9)
 746
 747 #define QOS_QUEUE_NUM                   4
 748 #define QOS_OUI_LEN                     3
 749 #define QOS_OUI_TYPE                    2
 750 #define QOS_ELEMENT_ID                  221
 751 #define QOS_OUI_INFO_SUB_TYPE           0
 752 #define QOS_OUI_PARAM_SUB_TYPE          1
 753 #define QOS_VERSION_1                   1
 754 #define QOS_AIFSN_MIN_VALUE             2
 755
 756 struct ieee80211_qos_information_element {
 757         u8 elementID;
 758         u8 length;
 759         u8 qui[QOS_OUI_LEN];
 760         u8 qui_type;
 761         u8 qui_subtype;
 762         u8 version;
 763         u8 ac_info;
 764 } __attribute__ ((packed));
 765
 766 struct ieee80211_qos_ac_parameter {
 767         u8 aci_aifsn;
 768         u8 ecw_min_max;
 769         __le16 tx_op_limit;
 770 } __attribute__ ((packed));
 771
 772 struct ieee80211_qos_parameter_info {
 773         struct ieee80211_qos_information_element info_element;
 774         u8 reserved;
 775         struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 776 } __attribute__ ((packed));
 777
 778 struct ieee80211_qos_parameters {
 779         __le16 cw_min[QOS_QUEUE_NUM];
 780         __le16 cw_max[QOS_QUEUE_NUM];
 781         u8 aifs[QOS_QUEUE_NUM];
 782         u8 flag[QOS_QUEUE_NUM];
 783         __le16 tx_op_limit[QOS_QUEUE_NUM];
 784 } __attribute__ ((packed));
 785
 786 struct ieee80211_qos_data {
 787         struct ieee80211_qos_parameters parameters;
 788         int active;
 789         int supported;
 790         u8 param_count;
 791         u8 old_param_count;
 792 };
 793
 794 struct ieee80211_tim_parameters {
 795         u8 tim_count;
 796         u8 tim_period;
 797 } __attribute__ ((packed));
 798
 799 /*******************************************************/
 800
 801 enum {                          /* ieee80211_basic_report.map */
 802         IEEE80211_BASIC_MAP_BSS = (1 << 0),
 803         IEEE80211_BASIC_MAP_OFDM = (1 << 1),
 804         IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
 805         IEEE80211_BASIC_MAP_RADAR = (1 << 3),
 806         IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
 807         /* Bits 5-7 are reserved */
 808
 809 };
 810 struct ieee80211_basic_report {
 811         u8 channel;
 812         __le64 start_time;
 813         __le16 duration;
 814         u8 map;
 815 } __attribute__ ((packed));
 816
 817 enum {                          /* ieee80211_measurement_request.mode */
 818         /* Bit 0 is reserved */
 819         IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
 820         IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
 821         IEEE80211_MEASUREMENT_REPORT = (1 << 3),
 822         /* Bits 4-7 are reserved */
 823 };
 824
 825 enum {
 826         IEEE80211_REPORT_BASIC = 0,     /* required */
 827         IEEE80211_REPORT_CCA = 1,       /* optional */
 828         IEEE80211_REPORT_RPI = 2,       /* optional */
 829         /* 3-255 reserved */
 830 };
 831
 832 struct ieee80211_measurement_params {
 833         u8 channel;
 834         __le64 start_time;
 835         __le16 duration;
 836 } __attribute__ ((packed));
 837
 838 struct ieee80211_measurement_request {
 839         struct ieee80211_info_element ie;
 840         u8 token;
 841         u8 mode;
 842         u8 type;
 843         struct ieee80211_measurement_params params[0];
 844 } __attribute__ ((packed));
 845
 846 struct ieee80211_measurement_report {
 847         struct ieee80211_info_element ie;
 848         u8 token;
 849         u8 mode;
 850         u8 type;
 851         union {
 852                 struct ieee80211_basic_report basic[0];
 853         } u;
 854 } __attribute__ ((packed));
 855
 856 struct ieee80211_tpc_report {
 857         u8 transmit_power;
 858         u8 link_margin;
 859 } __attribute__ ((packed));
 860
 861 struct ieee80211_channel_map {
 862         u8 channel;
 863         u8 map;
 864 } __attribute__ ((packed));
 865
 866 struct ieee80211_ibss_dfs {
 867         struct ieee80211_info_element ie;
 868         u8 owner[ETH_ALEN];
 869         u8 recovery_interval;
 870         struct ieee80211_channel_map channel_map[0];
 871 };
 872
 873 struct ieee80211_csa {
 874         u8 mode;
 875         u8 channel;
 876         u8 count;
 877 } __attribute__ ((packed));
 878
 879 struct ieee80211_quiet {
 880         u8 count;
 881         u8 period;
 882         u8 duration;
 883         u8 offset;
 884 } __attribute__ ((packed));
 885
 886 struct ieee80211_network {
 887         /* These entries are used to identify a unique network */
 888         u8 bssid[ETH_ALEN];
 889         u8 channel;
 890         /* Ensure null-terminated for any debug msgs */
 891         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 892         u8 ssid_len;
 893
 894         struct ieee80211_qos_data qos_data;
 895
 896         /* These are network statistics */
 897         struct ieee80211_rx_stats stats;
 898         u16 capability;
 899         u8 rates[MAX_RATES_LENGTH];
 900         u8 rates_len;
 901         u8 rates_ex[MAX_RATES_EX_LENGTH];
 902         u8 rates_ex_len;
 903         unsigned long last_scanned;
 904         u8 mode;
 905         u32 flags;
 906         u32 last_associate;
 907         u32 time_stamp[2];
 908         u16 beacon_interval;
 909         u16 listen_interval;
 910         u16 atim_window;
 911         u8 erp_value;
 912         u8 wpa_ie[MAX_WPA_IE_LEN];
 913         size_t wpa_ie_len;
 914         u8 rsn_ie[MAX_WPA_IE_LEN];
 915         size_t rsn_ie_len;
 916         struct ieee80211_tim_parameters tim;
 917
 918         /* 802.11h info */
 919
 920         /* Power Constraint - mandatory if spctrm mgmt required */
 921         u8 power_constraint;
 922
 923         /* TPC Report - mandatory if spctrm mgmt required */
 924         struct ieee80211_tpc_report tpc_report;
 925
 926         /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
 927          * NOTE: This is variable length and so must be allocated dynamically */
 928         struct ieee80211_ibss_dfs *ibss_dfs;
 929
 930         /* Channel Switch Announcement - optional if spctrm mgmt required */
 931         struct ieee80211_csa csa;
 932
 933         /* Quiet - optional if spctrm mgmt required */
 934         struct ieee80211_quiet quiet;
 935
 936         struct list_head list;
 937 };
 938
 939 enum ieee80211_state {
 940         IEEE80211_UNINITIALIZED = 0,
 941         IEEE80211_INITIALIZED,
 942         IEEE80211_ASSOCIATING,
 943         IEEE80211_ASSOCIATED,
 944         IEEE80211_AUTHENTICATING,
 945         IEEE80211_AUTHENTICATED,
 946         IEEE80211_SHUTDOWN
 947 };
 948
 949 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 950 #define DEFAULT_FTS 2346
 951
 952 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 953 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 954 #define CFG_IEEE80211_RTS (1<<2)
 955
 956 #define IEEE80211_24GHZ_MIN_CHANNEL 1
 957 #define IEEE80211_24GHZ_MAX_CHANNEL 14
 958 #define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
 959                                   IEEE80211_24GHZ_MIN_CHANNEL + 1)
 960
 961 #define IEEE80211_52GHZ_MIN_CHANNEL 34
 962 #define IEEE80211_52GHZ_MAX_CHANNEL 165
 963 #define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
 964                                   IEEE80211_52GHZ_MIN_CHANNEL + 1)
 965
 966 enum {
 967         IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
 968         IEEE80211_CH_B_ONLY = (1 << 2),
 969         IEEE80211_CH_NO_IBSS = (1 << 3),
 970         IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
 971         IEEE80211_CH_RADAR_DETECT = (1 << 5),
 972         IEEE80211_CH_INVALID = (1 << 6),
 973 };
 974
 975 struct ieee80211_channel {
 976         u32 freq;
 977         u8 channel;
 978         u8 flags;
 979         u8 max_power;
 980 };
 981
 982 struct ieee80211_geo {
 983         u8 name[4];
 984         u8 bg_channels;
 985         u8 a_channels;
 986         struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
 987         struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
 988 };
 989
 990 struct ieee80211_device {
 991         struct net_device *dev;
 992         struct ieee80211_security sec;
 993
 994         /* Bookkeeping structures */
 995         struct net_device_stats stats;
 996         struct ieee80211_stats ieee_stats;
 997
 998         struct ieee80211_geo geo;
 999
1000         /* Probe / Beacon management */
1001         struct list_head network_free_list;
1002         struct list_head network_list;
1003         struct ieee80211_network *networks;
1004         int scans;
1005         int scan_age;
1006
1007         int iw_mode;            /* operating mode (IW_MODE_*) */
1008         struct iw_spy_data spy_data;    /* iwspy support */
1009
1010         spinlock_t lock;
1011
1012         int tx_headroom;        /* Set to size of any additional room needed at front
1013                                  * of allocated Tx SKBs */
1014         u32 config;
1015
1016         /* WEP and other encryption related settings at the device level */
1017         int open_wep;           /* Set to 1 to allow unencrypted frames */
1018
1019         int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1020                                  * WEP key changes */
1021
1022         /* If the host performs {en,de}cryption, then set to 1 */
1023         int host_encrypt;
1024         int host_encrypt_msdu;
1025         int host_decrypt;
1026         /* host performs multicast decryption */
1027         int host_mc_decrypt;
1028
1029         int host_open_frag;
1030         int host_build_iv;
1031         int ieee802_1x;         /* is IEEE 802.1X used */
1032
1033         /* WPA data */
1034         int wpa_enabled;
1035         int drop_unencrypted;
1036         int privacy_invoked;
1037         size_t wpa_ie_len;
1038         u8 *wpa_ie;
1039
1040         struct list_head crypt_deinit_list;
1041         struct ieee80211_crypt_data *crypt[WEP_KEYS];
1042         int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
1043         struct timer_list crypt_deinit_timer;
1044         int crypt_quiesced;
1045
1046         int bcrx_sta_key;       /* use individual keys to override default keys even
1047                                  * with RX of broad/multicast frames */
1048
1049         /* Fragmentation structures */
1050         struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1051         unsigned int frag_next_idx;
1052         u16 fts;                /* Fragmentation Threshold */
1053         u16 rts;                /* RTS threshold */
1054
1055         /* Association info */
1056         u8 bssid[ETH_ALEN];
1057
1058         enum ieee80211_state state;
1059
1060         int mode;               /* A, B, G */
1061         int modulation;         /* CCK, OFDM */
1062         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
1063         int abg_true;           /* ABG flag              */
1064
1065         int perfect_rssi;
1066         int worst_rssi;
1067
1068         /* Callback functions */
1069         void (*set_security) (struct net_device * dev,
1070                               struct ieee80211_security * sec);
1071         int (*hard_start_xmit) (struct ieee80211_txb * txb,
1072                                 struct net_device * dev, int pri);
1073         int (*reset_port) (struct net_device * dev);
1074         int (*is_queue_full) (struct net_device * dev, int pri);
1075
1076         int (*handle_management) (struct net_device * dev,
1077                                   struct ieee80211_network * network, u16 type);
1078
1079         /* Typical STA methods */
1080         int (*handle_auth) (struct net_device * dev,
1081                             struct ieee80211_auth * auth);
1082         int (*handle_deauth) (struct net_device * dev,
1083                               struct ieee80211_deauth * auth);
1084         int (*handle_action) (struct net_device * dev,
1085                               struct ieee80211_action * action,
1086                               struct ieee80211_rx_stats * stats);
1087         int (*handle_disassoc) (struct net_device * dev,
1088                                 struct ieee80211_disassoc * assoc);
1089         int (*handle_beacon) (struct net_device * dev,
1090                               struct ieee80211_beacon * beacon,
1091                               struct ieee80211_network * network);
1092         int (*handle_probe_response) (struct net_device * dev,
1093                                       struct ieee80211_probe_response * resp,
1094                                       struct ieee80211_network * network);
1095         int (*handle_probe_request) (struct net_device * dev,
1096                                      struct ieee80211_probe_request * req,
1097                                      struct ieee80211_rx_stats * stats);
1098         int (*handle_assoc_response) (struct net_device * dev,
1099                                       struct ieee80211_assoc_response * resp,
1100                                       struct ieee80211_network * network);
1101
1102         /* Typical AP methods */
1103         int (*handle_assoc_request) (struct net_device * dev);
1104         int (*handle_reassoc_request) (struct net_device * dev,
1105                                        struct ieee80211_reassoc_request * req);
1106
1107         /* This must be the last item so that it points to the data
1108          * allocated beyond this structure by alloc_ieee80211 */
1109         u8 priv[0];
1110 };
1111
1112 #define IEEE_A            (1<<0)
1113 #define IEEE_B            (1<<1)
1114 #define IEEE_G            (1<<2)
1115 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
1116
1117 static inline void *ieee80211_priv(struct net_device *dev)
1118 {
1119         return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1120 }
1121
1122 static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1123 {
1124         /* Single white space is for Linksys APs */
1125         if (essid_len == 1 && essid[0] == ' ')
1126                 return 1;
1127
1128         /* Otherwise, if the entire essid is 0, we assume it is hidden */
1129         while (essid_len) {
1130                 essid_len--;
1131                 if (essid[essid_len] != '\0')
1132                         return 0;
1133         }
1134
1135         return 1;
1136 }
1137
1138 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1139                                           int mode)
1140 {
1141         /*
1142          * It is possible for both access points and our device to support
1143          * combinations of modes, so as long as there is one valid combination
1144          * of ap/device supported modes, then return success
1145          *
1146          */
1147         if ((mode & IEEE_A) &&
1148             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1149             (ieee->freq_band & IEEE80211_52GHZ_BAND))
1150                 return 1;
1151
1152         if ((mode & IEEE_G) &&
1153             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1154             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1155                 return 1;
1156
1157         if ((mode & IEEE_B) &&
1158             (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1159             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1160                 return 1;
1161
1162         return 0;
1163 }
1164
1165 static inline int ieee80211_get_hdrlen(u16 fc)
1166 {
1167         int hdrlen = IEEE80211_3ADDR_LEN;
1168         u16 stype = WLAN_FC_GET_STYPE(fc);
1169
1170         switch (WLAN_FC_GET_TYPE(fc)) {
1171         case IEEE80211_FTYPE_DATA:
1172                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1173                         hdrlen = IEEE80211_4ADDR_LEN;
1174                 if (stype & IEEE80211_STYPE_QOS_DATA)
1175                         hdrlen += 2;
1176                 break;
1177         case IEEE80211_FTYPE_CTL:
1178                 switch (WLAN_FC_GET_STYPE(fc)) {
1179                 case IEEE80211_STYPE_CTS:
1180                 case IEEE80211_STYPE_ACK:
1181                         hdrlen = IEEE80211_1ADDR_LEN;
1182                         break;
1183                 default:
1184                         hdrlen = IEEE80211_2ADDR_LEN;
1185                         break;
1186                 }
1187                 break;
1188         }
1189
1190         return hdrlen;
1191 }
1192
1193 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1194 {
1195         switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1196         case IEEE80211_1ADDR_LEN:
1197                 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1198         case IEEE80211_2ADDR_LEN:
1199                 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1200         case IEEE80211_3ADDR_LEN:
1201                 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1202         case IEEE80211_4ADDR_LEN:
1203                 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1204         }
1205         return NULL;
1206 }
1207
1208 static inline int ieee80211_is_ofdm_rate(u8 rate)
1209 {
1210         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1211         case IEEE80211_OFDM_RATE_6MB:
1212         case IEEE80211_OFDM_RATE_9MB:
1213         case IEEE80211_OFDM_RATE_12MB:
1214         case IEEE80211_OFDM_RATE_18MB:
1215         case IEEE80211_OFDM_RATE_24MB:
1216         case IEEE80211_OFDM_RATE_36MB:
1217         case IEEE80211_OFDM_RATE_48MB:
1218         case IEEE80211_OFDM_RATE_54MB:
1219                 return 1;
1220         }
1221         return 0;
1222 }
1223
1224 static inline int ieee80211_is_cck_rate(u8 rate)
1225 {
1226         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1227         case IEEE80211_CCK_RATE_1MB:
1228         case IEEE80211_CCK_RATE_2MB:
1229         case IEEE80211_CCK_RATE_5MB:
1230         case IEEE80211_CCK_RATE_11MB:
1231                 return 1;
1232         }
1233         return 0;
1234 }
1235
1236 /* ieee80211.c */
1237 extern void free_ieee80211(struct net_device *dev);
1238 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1239
1240 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1241
1242 /* ieee80211_tx.c */
1243 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1244 extern void ieee80211_txb_free(struct ieee80211_txb *);
1245 extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1246                               struct ieee80211_hdr *frame, int len);
1247
1248 /* ieee80211_rx.c */
1249 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1250                         struct ieee80211_rx_stats *rx_stats);
1251 /* make sure to set stats->len */
1252 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1253                              struct ieee80211_hdr_4addr *header,
1254                              struct ieee80211_rx_stats *stats);
1255 extern void ieee80211_network_reset(struct ieee80211_network *network);
1256
1257 /* ieee80211_geo.c */
1258 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1259                                                      *ieee);
1260 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1261                              const struct ieee80211_geo *geo);
1262
1263 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1264                                       u8 channel);
1265 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1266                                       u8 channel);
1267 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1268 extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1269                                       u8 channel);
1270 extern const struct ieee80211_channel *ieee80211_get_channel(struct
1271                                                              ieee80211_device
1272                                                              *ieee, u8 channel);
1273
1274 /* ieee80211_wx.c */
1275 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1276                                  struct iw_request_info *info,
1277                                  union iwreq_data *wrqu, char *key);
1278 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1279                                    struct iw_request_info *info,
1280                                    union iwreq_data *wrqu, char *key);
1281 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1282                                    struct iw_request_info *info,
1283                                    union iwreq_data *wrqu, char *key);
1284 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1285                                       struct iw_request_info *info,
1286                                       union iwreq_data *wrqu, char *extra);
1287 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1288                                       struct iw_request_info *info,
1289                                       union iwreq_data *wrqu, char *extra);
1290 extern int ieee80211_wx_set_auth(struct net_device *dev,
1291                                  struct iw_request_info *info,
1292                                  union iwreq_data *wrqu,
1293                                  char *extra);
1294 extern int ieee80211_wx_get_auth(struct net_device *dev,
1295                                  struct iw_request_info *info,
1296                                  union iwreq_data *wrqu,
1297                                  char *extra);
1298
1299 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1300 {
1301         ieee->scans++;
1302 }
1303
1304 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1305 {
1306         return ieee->scans;
1307 }
1308
1309 #endif                          /* IEEE80211_H */